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35 results about "Mouth pressure" patented technology
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Medium-pressure gas collection technique based on cluster well
ActiveCN102174882AReduce alcohol injectionReduce operating pressureFluid removalSealing/packingHeating furnacePeripheral
The invention relates to a gas field transmission device based on a cluster well, in particular to a medium-pressure gas collection technique based on the cluster well, comprising gas wells, gas collecting branches, gas collecting main pipes, and a gas collection station in the cluster well set, wherein each gas well is provided with a well throttling machine. The medium-pressure gas collection technique is characterized in that: each gas well is used for reducing the well mouth pressure to the medium pressure through the well throttling machine, and uniformly transmits the natural gas generated by the gas wells of the cluster well set through a well mouth device and the gas collection branches to the next gathered well set after counting; the peripheral cluster well sets are gathered to be sent to the gas collection station through the gas collection main pipes; methanol injecting pipelines are arranged along the gas collection branches in the same slot to inject methanol to the cluster well sets through methanol injecting devices; and the methanol injecting devices are synchronously used to inject the methanol to the well set and the peripheral well sets. Under the condition of saving cost and simplifying technique, the natural gas in the well can be safely transported to a center processing factory to manage by fully using formation pressure without a heating furnace on the well mouth or the gas collection station, and a compressor at the gas collection station.
Owner:XIAN CHANGQING TECH ENG
Program and method for controlling pressure of nitrogen injection production increase coal bed gas
ActiveCN105138029AIncrease gas contentLarge reservesFluid removalFluid pressure controlInjection pressureHigh pressure
The invention discloses a program and method for controlling the pressure of nitrogen injection production increase coal bed gas. The method comprises the steps: enabling the response of a coal bed gas storage layer to the nitrogen injection pressure and rate of a nitrogen injection well and the changes of well mouth pressure, gas output and nitrogen volume percentage composition of a production well to be fed back to the nitrogen injection well, and adjusting the nitrogen injection pressure and rate; holding the pressure of the coal bed gas storage layer in necessity, and even carrying out conversion and employing a low-pressure oscillation pressurization mode; converting the coal bed gas storage layer in necessity and employing a high-pressure oscillation pressurization mode. Only if the coal bed has enough gas, are the program and method suitable for any coal bed. The method provided by the invention guarantees that the injected nitrogen enters into the coal bed, passes through all coal bed between the nitrogen injection well and the production well, enables the nitrogen to enter into miniature gaps of the coal bed, prompts adsorbed-state coal bed gas to be desorbed, drives the desorbed free-state coal bed gas to arrive at the production well, and achieves the purpose of coal bed gas yield increase.
Owner:郎溪品旭科技发展有限公司
Remote well natural gas recovery device
ActiveCN105927849AEasy to installEasy to moveGas handling applicationsFluid handledFiltrationWater jacket
The invention provides a remote well natural gas recovery device which mainly comprises a water jacket heater, a gas-liquid separator, a filter, a dehydration device, a reciprocating compressor, a gas charging pillar, a gas generating set and the like, and is characterized in that gas generated from a remote well is heated by a heating furnace, the heated gas enters the gas-liquid separator and the filter for separation and filtering to remove a liquid phase and a solid phase via separation and filtration, the filtered product is dehydrated by a molecular sieve, the dehydrated product enters the reciprocating compressor, the compressed product is pumped into a CNG trailer after being measured by the gas charging pillar to serve as CNG commercial gas for sale; when the CNG trailer containing the recovered gas is driven to a gas gathering station of a gas field, and the recovered gas is pumped into a pipe network again, charged gas enters a by-pass of the dehydration device directly; when the pressure in a well mouth is equal to or higher than 20 MPa, the charged gas enters a by-pass of the compressor directly; fuel gas of the gas generating set and the water jacket heater is supplied through a rear process pipeline of the dehydration device; and the whole set of the remote well natural gas recovery device is mounted on two semi-trailers, and fixedly erected on a well field via a hydraulic jack. The remote well natural gas recovery device is suitable for recovery of scattered natural gas in high-yield or intermittent-production remote wells of different well mouth pressures; the moving, transportation and mounting are convenient and fast; the adaptive capacity is high; and the recovery cost is low.
Owner:SOUTHWEST PETROLEUM UNIV
Device and method for detecting winch rope outlet length and method for obtaining height of lifting hook from ground
The invention discloses a device and method for detecting the winch rope outlet length and a method for obtaining the height of a lifting hook from the ground and relates to the technical field of lifting detection. By means of the device and method for detecting the winch rope outlet length and the method for obtaining the height of the lifting hook from the ground, automatic detection of the winch rope outlet length can be realized, the device comprises a speed measurement sensor, an ascending mouth pressure sensor, a descending mouth pressure sensor and a controller, wherein the speed measurement sensor obtains the winch rotation pulse number, the ascending mouth pressure sensor obtains winch ascending signals, the descending mouth pressure sensor obtains winch descending signals, the controller is in electrical connection with the speed measurement sensor, the ascending mouth pressure sensor and the descending mouth pressure sensor correspondingly, when the ascending mouth pressuresensor generates the signals, the speed measurement sensor is obtained as the positive pulse number; and when the descending mouth pressure sensor generates the signals, the speed measurement sensoris obtained as the negative pulse number, and then the winch rope outlet length is obtained. By means of the device, the pulse number and direction of winch rotation can be measured, so that the winchrope outlet length of a crane lifting mechanism in working is detected, and then the height of the lifting hook from the ground is detected, automatic detection can be realized, and the device is simple in structure and accurate in measurement.
Owner:CHINA 19TH METALLURGICAL CORP
Method for predicating combustion speed of cigarettes based on detection of pressure drop and flow field distribution
ActiveCN108398355ASimplify the assay processData processing is simpleMaterial analysisCombustionEngineering
The invention discloses a method for predicating a combustion speed of cigarettes based on detection of pressure drop and flow field distribution. The method comprises the following steps: determiningmouth-by-mouth pressure drop in a smoking process of a cigarette sample by utilizing a pressure drop detection device; determining air flow of a combustion cone end by utilizing a flow detection device; determining the combustion speed under a corresponding smoking opening sequence by utilizing a combustion speed detection device; taking mouth-by-mouth pressure drop changes and the air flow as independent variables x1 and x2 respectively and the combustion speed y as a dependent variable, so as to obtain a regression equation of a prediction model of the combustion speed of the cigarettes; after determining the mouth-by-mouth pressure drop changes and the air flow of the combustion cone end in the smoking process of other cigarettes, substituting into the prediction model, so as to obtainthe combustion speed of the cigarettes. According to the method disclosed by the invention, an experiment process for determining cigarette combustion property parameters is simplified and a basic detection method of the combustion speed is supplemented; unstable factors in the determination are determined and data processing in a traditional method is simplified. Furthermore, basic data is provided for guiding cigarette material researches, cigarette combustion and smoking mechanism analysis and cigarette material designing.
Owner:CHINA TOBACCO JIANGSU INDAL
Dual-purpose multi-channel hydraulic proportional valve
InactiveCN103343759ATo achieve the purpose of cooling oilServomotor componentsDual purposeMetering pump
Owner:赵江
Pressure dragging layering fracturing device
ActiveCN103912257AReduces the risk of sand jamming the pipe stringLow costFluid removalHigh pressurePlug valve
The invention discloses a pressure dragging layering fracturing device. The pressure dragging layering fracturing device comprises a ground device and a downhole tool string. The downhole tool string comprises a conical plug, a packer, a hydraulic power spraying gun, a coupling oil pipe, an abrasion-resisting one-way valve and a non-coupling oil pipe, all of which are connected in sequence. The ground device comprises a large well mouth four-way part, a double ram type preventer, a spraying-preventing box and an ejecting-preventing pneumatic slip. The upper end of the non-coupling oil pipe is connected with a lifting sub which is hung through a lift sub and a workover rig large-hook flying ring. The flying ring moves up and down to drag the non-coupling oil pipe to slide in the spraying-preventing box. A high-pressure elbow and a high-pressure soft pipe line are connected to the lifting sub in sequence. The high-pressure soft pipe line is connected with a ground high-pressure steel pipe line of a first fracture vehicle set. The steel pipe line is provided with a high-pressure tee joint which is provided with a plug valve for releasing pressure of the pipe lines, and the well mouth four-way part is connected with a second fracture vehicle set. By means of the combination of the double ram type preventer, the spraying-preventing box and the non-coupling oil pipe, a tubular column is directly lifted by a common workover rig under the well mouth pressure situation, the risk that the tubular column is clamped by sand is reduced to the maximum extent, and the layering fracture efficiency and the cost performance are greatly improved.
Owner:BC P INC CHINA NAT PETROLEUM CORP +1
Combined well mouth testing device for polymer injection well and method thereof
The invention relates to a combined well mouth testing device for a polymer injection well. A high-precision pressure monitor and a continuous liquid level monitor are connected with a three-way valve in a combination mode, and one combined well mouth testing device is installed on a corresponding pipeline of each polymer injection layer. The invention further relates to a testing method, and the testing method includes the following sequential steps that one combined well mouth testing device is installed on the corresponding pipeline of each polymer injection layer; well mouth pressures and liquid levels of all the polymer injection layers are tested at the same time; bottom hole pressure of the corresponding polymer injection layer is calculated according to testing values of the well mouth pressure and the liquid level of each polymer injection layer; a corresponding pressure monitoring well testing model is selected according to the bottom hole pressure of each polymer injection layer; the bottom hole pressures of all the polymer injection layers and the corresponding pressure monitoring well testing models are fitted respectively to obtain well testing interpretation parameters, and the underground viscosity distribution condition of a polymer solution of the corresponding polymer injection layer is solved inversely. The technical scheme solves the problem that pressure testing data is lost due to single well mouth pressure testing.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)
Method for predicating combustion intensity of cigarettes based on detection of pressure drop
InactiveCN108398457ASimplify the assay processSimplify workloadMaterial heat developmentCombustionEngineering
The invention discloses a method for predicating the combustion intensity of cigarettes based on detection of pressure drop. The method comprises the following steps: determining mouth-by-mouth pressure drop in a smoking process of a cigarette sample by utilizing a pressure drop detection device; determining combustion surface temperature under a corresponding smoking opening sequence of the cigarette sample by utilizing an thermal infrared imager and extracting all temperature data; taking the mouth-by-mouth pressure drop in the smoking process of the cigarette sample as an independent variable x and the combustion intensity y as a dependent variable to obtain a regression equation of a prediction model of the combustion intensity of the cigarettes; after determining the mouth-by-mouth pressure drop in the smoking process of the cigarette sample, substituting into the prediction model, so as to obtain the predicated combustion intensity of the cigarettes. According to the method disclosed by the invention, an experiment process for determining cigarette combustion property parameters is simplified and a basic detection method of the combustion intensity is supplemented; unstable factors in the determination of combustion temperature are reduced, and a data processing quantity in a traditional combustion temperature detection method is simplified. Furthermore, basic data is provided for guiding cigarette material researches, cigarette combustion and smoking mechanism analysis and cigarette material designing; the method has very strong practicability and wide applicability.
Owner:CHINA TOBACCO JIANGSU INDAL
Automatic adjusting device and method for converter second venturi throat
ActiveCN105154615AHigh recovery rateRealize automatic control adjustmentManufacturing convertersGas analysisAutomatic control
The invention belongs to the technical field of a converter dust removing device and method, and relates to an automatic adjusting device and method for a converter second venturi throat. The automatic adjusting device and method are used for carrying out automatic adjustment on the converter second venturi throat. According to the technical scheme, a micro differential pressure control manner of a traditional furnace mouth pressure sensor is broken through, a gas analysis meter sensor, an oxygen analysis meter sensor, an oxygen lance position sensor and an oxygen adjusting valve position sensor are additionally arranged, and signals of carbon monoxide content, oxygen content and oxygen lance position serve as marks. A throat hydraulic station is controlled through a PLC. When all the detection signals meet the condition requirement, a weight moves downwards to the regulated position, and when any one of the detection signals does not meet the condition, the weight moves upwards to reset to the original position, and thus the automatic control and adjustment of the converter second venturi throat are achieved. According to the automatic adjusting device and method, simplicity and practicability are achieved, maintaining is convenient, and safety and reliability are achieved. Complex control procedures are avoided, accidents are effectively reduced, the gas recycling rate is greatly increased, and obvious economic benefits are achieved.
Owner:TANGSHAN IRON & STEEL GROUP
Double-throttling-nozzle downhole throttling device
InactiveCN105201464AChange sizeRealize the function of throttling and reducing pressureFluid removalRubber ringConical tube
The invention relates to a double-throttling-nozzle downhole throttling device used in the process of oil field gas well natural gas extraction. The problem that in the production process of a gas well, throttling nozzles need to be replaced under the well is solved. According to the technical scheme, an upper throttling nozzle is placed into a stepped hole in the lower portion of a central spindle, a pressing cap is connected with a stepped hole opening thread of the central spindle in a screwed mode, and a spring a is installed on a step in the middle of the outer circle of the central spindle. The central spindle, the upper throttling nozzle, the pressing cap and the spring a are integrally placed into an inner cavity of an upper center tube. An end cover is connected with the upper portion of the upper center tube in a screwed mode. The lower end of the end cover presses the spring a. A lower throttling nozzle is placed into a stepped hole in the upper portion of an inner hole of a lower center tube, the upper end of the lower center tube and the lower end of the upper center tube are connected in a screwed mode, and a spring d is installed on a step on the outer circle of the lower center tube. The upper end of a lower barrel and the lower end of an outer barrel are connected in a screwed mode. The upper portion of an upper conical tube and the middle of the lower barrel are connected in a screwed mode, and a seal rubber ring is installed on a step on the lower portion of the upper conical tube. When the yield of the gas well is changed, the size of a throttling hole is changed under the well through well-mouth pressure injection.
Owner:SOUTHWEST PETROLEUM UNIV
Oil well gas injection method
InactiveCN107060707AImplement security injectionEffective calculationFluid removalInjection pressureInjection equipment
The invention discloses an oil well gas injection method. The oil well gas injection method comprises the steps that (1) the stratum pressure value of an oil well is calculated; (2) according to the obtained stratum pressure value, the well mouth pressure value generated by the oil well when only gas is injected into the oil well is calculated; and (3) when the output pressure value of gas injection equipment cannot meet the requirement of the well mouth pressure value, gas and water are injected into the oil well in a mixed mode. Through the oil well gas injection method, the well mouth gas injection pressure is effectively lowered, the gas-water mixing injection ratio adopted by a gas injection well under the condition of existing gas injection equipment is accurately predicted, technological support is provided for the gas injection technology, important guarantee is provided for development of the oil field gas injection three-time oil extraction technology, and application and promotion, under the condition of the existing gas injection equipment, of the technology that the nitrogen gas is injected to improve the recovery ratio are achieved.
Owner:CHINA PETROLEUM & CHEM CORP
Oil field water injection simulation experiment platform
The invention discloses an oil field water injection simulation experiment platform and mainly aims to provide a water injection simulation experiment device. The oil field water injection simulationexperiment platform is characterized in that the oil field water injection simulation experiment platform comprises a pipe network system, a simulated well system, a supporting frame structure, a baseplate mechanism and a work station; the pipe network comprises a spiral pipeline, a flow direction measuring device and a multi-way valve; the simulated well system comprises a plurality of simulatedwell units and is used for simulating the well mouth pressure in actual water injection; the supporting frame structure comprises two parts of a hydraulic vertical column unit and a frame unit, the base plate mechanism is divided into an upper layer and a lower layer and comprises a lower base plate and an upper base plate, and a hydraulic travelling mechanism is mounted on the lower base plate and can drive a whole system to move in the front-back direction and the left-right direction; and the work station comprises a water tank, a waster pump, a hydraulic oil tank and a valve box. According to the water injection simulation experiment device, the linear loss in well mouth pressure and actual oil field water injection can be simulated, the length of a spiral pipe and the number of wellmouths can be flexibly combined, the diversified simulation conditions can be met, an oil field water injection system is simulated, a water injecting pump is adjusted to reach the optimum displacement, and energy and water resources are saved.
Owner:NORTHEAST GASOLINEEUM UNIV +1
Pipe mouth pressure automatic regulating structure
InactiveCN108825834ATo achieve pressure relief operationSimple structureEqualizing valvesSafety valvesAuto regulationEngineering
The invention particularly relates to a pipe mouth pressure automatic regulating structure. The structure comprises a pipe mouth provided with an exhaust hole. An air inlet plate is fixedly arranged at the bottom of the exhaust hole and is of a netty structure. A well-matched plug column is arranged in the exhaust hole. A spring is arranged between the plug column and the air inlet plate. One endof the spring is fixedly connected with the air inlet plate, and the other end of the spring is fixedly connected with the plug column. A first pressure release hole and a second pressure release holewhich communicate with the exhaust hole are transversely formed in the side wall of a pipe mouth. The first pressure release hole is located above the second pressure release hole. According to the structure, pressure releasing operation can be achieved, the pressure releasing amount is automatically regulated according to the pressure, and meanwhile, the structure is simple in structure, ingenious in design and quite good in practicability and market popularization.
Owner:四川丞味商贸有限公司
Method for predicting air flow of cigarette combustion cone point based on detection pressure drop
InactiveCN108416138ASimplify the assay processReduce instabilityDesign optimisation/simulationComplex mathematical operationsCombustionEngineering
The invention discloses a method for predicting the air flow of a cigarette combustion cone point based on detection pressure drop. The mouth-by-mouth pressure drop during cigarette sample suction ismeasured through a pressure drop detecting device; the air flow of the combustion cone point during cigarette sample suction is measured through a flow detecting device; a regression equation of a prediction model is obtained with the pressure drop as the independent variable x and the cigarette combustion cone point frontal air flow y; the mouth-by-mouth pressure drop during cigarette suction ismeasured and substituted into the prediction model so as to obtain the air flow of the cigarette combustion cone point. By means of the method, the measuring experimental process of the air flow of the cigarette combustion cone point is simplified; a detecting method of the air flow of the combustion cone point is supplemented, and by means of the method, unstable factors during combustion cone flow measuring can be reduced; the data processing process of a traditional combustion cone flow measuring method is simplified. The basic data and theoretical basis are provided for guiding the analysis of a cigarette combustion and suction mechanism and the design of a cigarette material, and the method has quite high practicability and wide applicability.
Owner:CHINA TOBACCO JIANGSU INDAL
Method and device for obtaining state of oil well collapse
The invention provides a method and device for obtaining the state of oil well collapse. The method includes the steps that fluid injecting well mouth pressure of an oil well is obtained; whether or not the fluid injecting well mouth pressure and fluid injecting time meet preset conditions is judged, wherein fluid injecting time is smaller than or equal to fluid injecting stopping time; if the fluid injecting well mouth pressure and the fluid injecting time meet preset conditions, it is determined that an oil well is in the state of collapse. Through the method and device for obtaining the state of oil well collapse, the efficiency of obtaining the state of oil well collapse is improved.
Owner:PETROCHINA CO LTD
Testing method for sand discharging capacity of lifting pump
ActiveCN108661924ASuitable for sand discharge requirementsLarge sand discharge capacityPump testingPump controlProficiency testingSpecific volume
The invention relates to a testing method for the sand discharging capacity of a lifting pump. The lifting pump is located in a testing well, and is used for extracting liquid in the well; and the testing well is connected with a liquid supplying device which is provided with a liquid supplying pump. The method includes the following steps that firstly, liquid with a specific sand content and in aspecific volume is prepared in the liquid supplying device; secondly, the liquid supplying pump is started, so that the liquid with the specific sand content is injected into the testing well from the liquid supplying device; thirdly, the lifting pump is started, so that the liquid in the testing well is extracted to the liquid supplying device to form a cycle loop; fourthly, the liquid supplyingpump and the lifting pump are adjusted, so that the flow speed of the liquid in the cycle loop reaches a plurality of preset values, and a plurality of well mouth pressure values of the testing wellare obtained due to measurement; and fifthly, liquid with a sand content different from the previous specific sand content and in a specific volume is prepared in the liquid supplying device, the steps from the second step to the fourth step are repeatedly executed, and well mouth pressure values corresponding to different liquid flow speeds and different sand containing rates are obtained due tomeasurement.
Owner:CNPC OFFSHORE ENG
Well group return pressure falling metering device
ActiveCN109611690ARelieve pressureTo achieve the purpose of increasing productionHollow article cleaningPipeline systemsPower sensorStreamflow
The invention discloses a well group return pressure falling metering device which comprises a return pressure falling metering unit, a data collecting unit, a real-time monitoring unit, a data transmission unit, a system control unit, an auxiliary unit and a control cabinet. The return pressure falling metering unit comprises a heating furnace, a tipping bucket meter, a booster pump, an oil-waterseparator and a dosing device, the real-time monitoring unit comprises a flow sensor, a temperature sensor, a pressure sensor, a liquid level sensor, a current sensor, a voltage sensor and a power sensor, and the system control unit comprises a CPU, a power module, an I / O module and a Bthernet and RS485 / 232 communication interface module. By means of the return pressure falling metering unit, thewell group return pressure falling metering device is beneficial to being used for an oil well with high return pressure needing to be pressurized, so that the equipment has the functions of reducingwell mouth pressure and increasing oil delivery pressure to achieve the purpose of increasing the production of the oil well, and also has the functions of well mouth sealed oil metering, sampling, gas measurement, pressure measurement, natural gas recycling, metering, displaying, direct reading and the like.
Owner:安徽恩蔓智能科技有限公司
Automatic well mouth pressure relief device and method for overflow shut-in
InactiveCN104196490AFluid pressure reliefAvoid direct impactWell/borehole valve arrangementsSealing/packingEngineeringCheck valve
The invention discloses an automatic well mouth pressure relief device for overflow shut-in. The automatic well mouth pressure relief device for overflow shut-in comprises a main pressure relief pipe, a standby pressure relief pipe and a main flow pipe, wherein the inlet end A of a four-way pipe I (1) is connected with a second manual valve (5), a check valve (4) is connected onto the second manual valve (5), the main pressure relief pipe consists of a third manual valve (6), a target-shaped elbow A (7), a first overflow valve (8) and a target-shaped elbow B (9), the third manual valve (6), the target-shaped elbow A (7), the first overflow valve (8) and the target-shaped elbow B (9) are connected between the outlet end B of the four-way pipe I (1) and the inlet end B of a four-way pipe II (3), and the standby pressure relief pipe consists of a fourth manual valve (10), a target-shaped elbow C (11), a second overflow valve (12) and a target-shaped elbow D (13). The invention further discloses a pressure relief method. The automatic well mouth pressure relief device and method for overflow shut-in has the advantages of being compact in structure, high in reliability, simple in operation and high in pressure control accuracy and automation degree.
Owner:SOUTHWEST PETROLEUM UNIV
Medium-pressure gas collection technique based on cluster well
ActiveCN102174882BReduce alcohol injectionReduce operating pressureFluid removalSealing/packingHeating furnacePeripheral
The invention relates to a gas field transmission device based on a cluster well, in particular to a medium-pressure gas collection technique based on the cluster well, comprising gas wells, gas collecting branches, gas collecting main pipes, and a gas collection station in the cluster well set, wherein each gas well is provided with a well throttling machine. The medium-pressure gas collection technique is characterized in that: each gas well is used for reducing the well mouth pressure to the medium pressure through the well throttling machine, and uniformly transmits the natural gas generated by the gas wells of the cluster well set through a well mouth device and the gas collection branches to the next gathered well set after counting; the peripheral cluster well sets are gathered to be sent to the gas collection station through the gas collection main pipes; methanol injecting pipelines are arranged along the gas collection branches in the same slot to inject methanol to the cluster well sets through methanol injecting devices; and the methanol injecting devices are synchronously used to inject the methanol to the well set and the peripheral well sets. Under the condition of saving cost and simplifying technique, the natural gas in the well can be safely transported to a center processing factory to manage by fully using formation pressure without a heating furnace on the well mouth or the gas collection station, and a compressor at the gas collection station.
Owner:XIAN CHANGQING TECH ENG
An oilfield water injection simulation experiment platform
An oilfield water injection simulation experiment platform. The main purpose is to provide a set of simulated water injection experimental device. It is characterized in that: it includes a pipe network system, a simulated well system, a supporting frame structure, a chassis mechanism and a workstation; the pipe network system includes a spiral pipeline, a flow direction measuring device and a multi-way valve, and the simulated well system includes several simulated well units for simulating The wellhead pressure during actual water injection; the supporting frame structure includes two parts, the hydraulic column unit and the frame unit. The chassis mechanism is divided into upper and lower layers. The lower chassis is equipped with a hydraulic walking mechanism, which can drive the entire system to move forward and backward, left and right, and the upper chassis; Workstation Including water tank, water pump, hydraulic oil tank, hydraulic pump and valve box. This device can simulate the wellhead pressure and the loss along the way during water injection in the actual oilfield, and can flexibly combine the length of the spiral pipe and the number of wellheads, and can meet various simulation conditions, realize the simulation of the oilfield water injection system, and adjust the injection pump to achieve the optimal displacement. , save energy and water resources.
Owner:NORTHEAST GASOLINEEUM UNIV +1
Airway resistance measuring system and method
InactiveCN110720919AAvoid measuringSolve the problem of certain limitations in clinical promotionRespiratory organ evaluationSensorsControl valvesIntensive care medicine
The invention discloses an airway resistance measuring system and method and relates to the technical field of biomedical engineering. At a (0-t) moment, a control valve I is in a turning-on state anda control valve II is in a turning-off state by a microprocessor, and a pipeline communicates with an external atmosphere; at a (t+<delta>t) moment, the control valve I is in a turning-off state andthe control valve II is in a turning-on state by the microprocessor, and the pipeline communicates with a constant pressure container; a gas flow detected by a gas flow detection module at the t moment is Q0 and the gas flow detected at the (t+<delta>t) moment is Q1; an oral pressure detected by a pressure signal detection module at the t moment is P0 and the oral pressure detected at the (t+<delta>t) moment is P1; and the microprocessor calculates airway resistance Ro at the t moment according to acquired gas flow signals and pressure signals. The airway resistance measuring system and methodaim at realizing simple and convenient measurement of the airway resistance and solve the problem that plethysmography has certain limitation in clinical promotion.
Owner:合肥中科博谐科技有限公司
A Method for Predicting Cigarette Burning Rate Based on Detection of Pressure Drop and Flow Field Distribution
ActiveCN108398355BSimplify the assay processData processing is simpleMaterial analysisCombustionEngineering
The invention discloses a method for predicating a combustion speed of cigarettes based on detection of pressure drop and flow field distribution. The method comprises the following steps: determiningmouth-by-mouth pressure drop in a smoking process of a cigarette sample by utilizing a pressure drop detection device; determining air flow of a combustion cone end by utilizing a flow detection device; determining the combustion speed under a corresponding smoking opening sequence by utilizing a combustion speed detection device; taking mouth-by-mouth pressure drop changes and the air flow as independent variables x1 and x2 respectively and the combustion speed y as a dependent variable, so as to obtain a regression equation of a prediction model of the combustion speed of the cigarettes; after determining the mouth-by-mouth pressure drop changes and the air flow of the combustion cone end in the smoking process of other cigarettes, substituting into the prediction model, so as to obtainthe combustion speed of the cigarettes. According to the method disclosed by the invention, an experiment process for determining cigarette combustion property parameters is simplified and a basic detection method of the combustion speed is supplemented; unstable factors in the determination are determined and data processing in a traditional method is simplified. Furthermore, basic data is provided for guiding cigarette material researches, cigarette combustion and smoking mechanism analysis and cigarette material designing.
Owner:CHINA TOBACCO JIANGSU INDAL
High-pressure water injection well head pressure gauge connector and matched wrench thereof
InactiveCN105587312AImprove venting efficiencyPrevent leakageSurveyFluid removalPressure senseHigh pressure water
The invention provides a high-pressure water injection well head pressure gauge connector and a matched wrench thereof. The high-pressure water injection well head pressure gauge connector comprises a pressure gauge, a pressure gauge connector sensing assembly, a connecting neck, an emptying assembly and a ball valve assembly; the sensing assembly comprises a pressure gauge sensor, a pressure sensor, a first pressure sensing diaphragm, an anti-freezing oil adding opening, a second pressure sensing diaphragm, a leakproof partition plate, an anti-freezing oil storage space and an anti-freezing oil storage space outer wall; the emptying assembly comprises a double-headed bolt, an emptying opening, an emptying clearance, a bolt middle section, a double-headed thread, a double-headed thread rotating pointer disc and a hexagonal big-head nut; the ball valve assembly comprises a ball valve, a ball valve upper tube, a ball valve lower tube, a ball valve connecting rod, a ball valve rotating dial, a hexagonal big-head nut and a water injection well head connecting thread; the connecting neck, the emptying assembly and a hollow part of the ball valve form a liquid flowing channel. The high-pressure water injection well mouth pressure gauge connector and the matched wrench thereof have the advantages of being simple in structure, convenient to disassemble and assemble, capable of saving the anti-freezing liquid cost and easily regulating emptying and pressure relieving, stable in operation and accurate in measurement.
Owner:SOUTHWEST PETROLEUM UNIV
Lead screw nut pair transmission control device
InactiveCN101059165BReduce rigid contact pressureWon't breakGearingGear lubrication/coolingSolenoid valveControl signal
Lead-screw nut vice transmission control device and the method and the processing method of nut components, the torque sensor in hydraulic control device of control device changes the torque transmitted by lead-screw into signals and transmits the signals to controller, the controller sends the oil duct reversing control signals on the three-position four-way magnetic reversing solenoid valve, the controller controls the output mouth pressure of pressure control valve which is transmitted on the side surface contacted with nut and lead-screw through two pipelines, the screw thread two sides of nut is opened with two spiral oil-storing grooves which are sealed and formed by two end covers of nut two ends and the surface contacted with nut and lead-screw; the control method is: the controller controls the output mouth pressure of pressure control valve to make it is less than or equal with 8TN / ((phi12-phi22)L), the processing method is: first assembling the nut and two end covers into one unit, processing screw thread on the inner hole surface of nut and two end covers, then processing two spiral oil-storing grooves on the screw thread two sides of nut, last assembling the nut and two end covers into one unit.
Owner:LANZHOU UNIVERSITY OF TECHNOLOGY
A remote well natural gas recovery device
ActiveCN105927849BEasy to installEasy to moveGas handling applicationsFluid handledFiltrationEngineering
Owner:SOUTHWEST PETROLEUM UNIV
Exercise trumpet capable of adjusting length of trumpet body
PendingCN109003594ASimple structureEasy to assemble and disassembleMusicWind musical instrumentsSized smallEngineering
The invention provides an exercise trumpet capable of adjusting length of the trumpet body. A trumpet mouth pressure reducing practicer convenient for beginner practice and extending the length of thetrumpet body is arranged between the trumpet mouth and the intake pipe, while extending of the length of the trumpet body affects the accuracy of musical sound pitch. The solution is to cut off halfof the extending length of the intake pipe and the exhaust pipe so as to offset the influence of the extending length of the trumpet body and ensure the original length and the pitch of the trumpet body and facilitate the beginner to practice. When the trumpet is normally used, the practicer is removed, the two end parts of the main tuning pipe are extended by the length equal to the length cut off from the intake pipe and the exhaust pipe, or the upper pipe and the lower pipe sleeve between the main tuning pipe and the intake pipe and between the main tuning pipe and the exhaust pipe, and thelength of the upper pipe and the lower pipe is equal to the size cut off from the intake pipe and the exhaust pipe and are connected by connecting rods so as to ensure the original length of the trumpet body of the trumpet. According to the trumpet, the accuracy of the musical sound pitch can be ensured, and the trumpet is suitable for beginner practice and normal use and is simple in structure and convenient to disassemble and assemble.
Owner:张廷杰
Handheld cordless non-nutritive suck assessment device
ActiveCN105228575BBaby-comfortersTelemetric patient monitoringEmergency medicineBiomedical engineering
Owner:INNARA HEALTH
Wellhead combination testing device and method for polymer injection well
The invention relates to a combined well mouth testing device for a polymer injection well. A high-precision pressure monitor and a continuous liquid level monitor are connected with a three-way valve in a combination mode, and one combined well mouth testing device is installed on a corresponding pipeline of each polymer injection layer. The invention further relates to a testing method, and the testing method includes the following sequential steps that one combined well mouth testing device is installed on the corresponding pipeline of each polymer injection layer; well mouth pressures and liquid levels of all the polymer injection layers are tested at the same time; bottom hole pressure of the corresponding polymer injection layer is calculated according to testing values of the well mouth pressure and the liquid level of each polymer injection layer; a corresponding pressure monitoring well testing model is selected according to the bottom hole pressure of each polymer injection layer; the bottom hole pressures of all the polymer injection layers and the corresponding pressure monitoring well testing models are fitted respectively to obtain well testing interpretation parameters, and the underground viscosity distribution condition of a polymer solution of the corresponding polymer injection layer is solved inversely. The technical scheme solves the problem that pressure testing data is lost due to single well mouth pressure testing.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)
Motorcycle brake jaw-force detection table
The testing desk for measuring the force of the tongs mouth of motorcycle brake comprises the computer and the main body of the testing desk. The main body comprises the mounting rack comprises, the clamping fixture for fixing the handle body, an othering fixture for fixing the tongs mouth on the tested piece and the pump assembly, the actuating unit for driving the handle on the handle body and the push rod pressing on the tongs mouth. The displacement sensor and the handle pressure sensor are setup on the actuating unit. The tongs mouth pressure sensor is setup on the push rod. The signals of the sensors and are input to the computer. The actuating unit simulates braking so as to drive the handle on the tested piece, making the division piston of the pump of the tested piece act. Meanwhile, the computer runs the testing program, which sends the signals detected by sensors to the computer for further processing.
Owner:WUHAN UNIV OF TECH
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