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1293 results about "Pressure stabilization" patented technology
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Gas-liquid-solid three-phase suspension bed reactor for fischer-tropsch synthesis and its applications
ActiveUS20100216896A1High activitySimple structureHydrocarbon from carbon oxidesPhysical/chemical process catalystsGas phaseFiltration
A Fischer-Tropsch synthesis three-phase suspension bed reactor (“suspension bed” also called “slurry bed”) and its supplemental systems, may include: 1) structure and dimension design of F-T synthesis reactor, 2) a gas distributor located at the bottom of the reactor, 3) structure and arrangement of a heat exchanger members inside the reactor, 4) a liquid-solid filtration separation device inside reactor, 5) a flow guidance device inside reactor, 6) a condensate flux and separation member located in the gas phase space at the top of reactor, 7) a pressure stabilizer, a cleaning system for the separation device; an online cleaning system for the gas distributor; an ancillary system for slurry deposition and a pre-condensate and mist separation system located at the outlet of upper reactor. This reactor is suitable for industrial scale application of Fischer-Tropsch synthesis.
Owner:SYNFUELS CHINA TECH CO LTD
Inflatable solar energy collector apparatus
ActiveUS20090260620A1Accurate trackingEasy to replaceSolar heating energyMirrorsExternal energyDifferential pressure
An inflatable solar energy collector. The device uses two elongated and pressure-stabilized air chambers with a trough-shaped reflecting surface in between. The curvature of the reflecting surface is adjusted by adjusting the differential pressure between the two air chambers. The device can be configured to provide a focal point outside the air chambers or inside the air chambers. For the version using the external focal point an external energy receiver is appropriately positioned. For the version using the internal focal point, the receiver is mounted inside one of the air chambers.
Owner:FLORIDA STATE UNIV RES FOUND INC
Test device for high-pressure combustible gas leakage spontaneous combustion and shock wave induction ignition
InactiveCN103454396APerfect spontaneous ignition mechanismEnable Visualization ResearchFuel testingSpontaneous combustionShock wave
The invention discloses a test device for high-pressure combustible gas leakage spontaneous combustion and shock wave induction ignition. The whole test device comprises a test gas bottle, a nitrogen gas bottle, a high-pressure ventilating pipeline, a pressure stabilization valve, an electromagnetic valve, a pressure gauge, a vacuum pump, a high-pressure storage tank, a pressure transducer, an ICP (inductively coupled plasma) pressure sensor, a photoelectric diode, a rupture disk clamp (in which a rupture disk is arranged), downstream pipelines, a schlieren, a high-speed camera, a protection box, an air compressor and the like. The device can be used for (1) researching the influence of factors, such as different leakage pressures, shapes, lengths and diameters of different downstream pipelines, the gas initial temperature, a breakage shape of the rupture disk and obstacles outside an orifice, on the spontaneous combustion ignition, and further completing a spontaneous combustion ignition mechanism; (2) researching a shock wave induction ignition process and disclosing a shock wave induction ignition mechanism and influence factors thereof; (3) realizing the visible research on spontaneous combustion ignition and shock wave induction processes.
Owner:UNIV OF SCI & TECH OF CHINA
Hydraulic transmission-based method and device for storing energy and realizing stabilized voltage and constant frequency in wave power generation
InactiveCN101737241AThe overall structure is simple and reliableOutput delivery is smoothMachines/enginesEngine componentsPressure stabilizationConstant frequency
The invention discloses a hydraulic transmission-based method and a hydraulic transmission-based device for storing energy and realizing stabilized voltage and constant frequency in wave power generation. In the device, a floating pendulum is connected with a hydraulic cylinder, high pressure oil outputted by a non-rod cavity of the hydraulic cylinder enters a high pressure energy storing device and an oil inlet of a variable motor through a control integrated valve and through a high pressure oil tube, low pressure oil outputted by an oil outlet of the variable motor enters a low pressure big-capacity energy storing device and returns to the rod cavity of the hydraulic cylinder through the control integrated valve, the main shaft of the variable motor is connected with a permanent magnet synchronous generator, and the permanent magnet synchronous generator is connected to a rectifying module and a direct-current electric energy charging-discharging control module and then connected to a stepless unload adjustable load and a storage battery. The high pressure energy storing device and the low pressure big-capacity energy storing device realize the energy storage by absorbing the fluctuation, caused by the change of transient waves, of pressure and flow rate. A controller realizes the pressure stabilization constant frequency by the stepless unload adjustable load and the displacement of the hydraulic motor respectively. The device has the advantage of making the wave power generating device output more smoothly, more free from influence of the wave impact and have higher efficiency.
Owner:ZHEJIANG UNIV
Intelligent NC super high pressure true 3D uneven loading and unloading and pressure stabilizing model test system
ActiveCN108124460AHigh loading accuracyLong stabilization timeUnderground chambersMaterial strength using tensile/compressive forcesUltra high pressurePilot system
Owner:SHANDONG UNIV
Machine room
ActiveCN103174308ASimple designEasy maintenanceDucting arrangementsLighting and heating apparatusCold airPressure stabilization
The invention discloses a machine room which comprises a room body, an air conditioning component, a static pressure box, an air supply air duct, a complete machine cabinet component and an isolated frame. Cold air generated by working of the air conditioning component is input in the static pressure box from an air outlet. Speed reduction and pressure stabilization are carried out on the cold air in the static pressure box. The cold air enters the air supply air duct, is sent in a cold channel through the air supply air duct, cools the complete machine cabinet component, is changed into hot air, the hot air is processed and changed into cold air by the air conditioning component to be input in the static pressure box through an air return inlet, and one-time circulation of cooling the machine room is finished. On one hand, air is supplied on the air supply air duct so that transmission of sufficient refrigeration air volume is guaranteed. On the other hand, part of cold channels and the insolated frame are manufactured in advance on the scene, the position of a complete machine cabinet is reserved, the complete machine cabinet can be directly pushed in, and after in position, the complete machine cabinet can be directly used. The machine room is simple and practical in design and convenient to maintain.
Owner:BEIJING BAIDU NETCOM SCI & TECH CO LTD
Method controlling operation pressure stabilization of air and hydrogen in fuel cell
The invention relates to a method for controlling and stabilizing the operating pressure of air and hydrogen of fuel cells, and includes a hydrogen storage tank, an air conveying device and a fuel cell stack, as well as an electromagnetic proportional valve and a pressure sensor, wherein the hydrogen storage tank / the air conveying device are connected with a hydrogen / air inlet of the fuel cell stack via the electromagnetic proportional valve; the pressure sensor is arranged at the hydrogen / air inlet part of the fuel cell stack, and connected with the electromagnetic proportional valve; the pressure sensor can detect the pressure of hydrogen / air entering the fuel cell stack and feed pressure signals back to the electromagnetic proportional valve; the electromagnetic proportional valve can automatically regulate the frequencies of opening and closing according to the pressure signals so as to keep the hydrogen / air entering the fuel cell stack under a constant pressure of the desired value. Compared with the prior art, the method has the advantages of simple structure, lower energy consumption, safe use, etc.
Owner:SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
Experiment simulation system for exploiting natural gas hydrate by using CO2
InactiveCN102094610AOther gas emission reduction technologiesFluid removalPressure stabilizationData acquisition
The invention discloses an experiment simulation system for exploiting natural gas hydrate by using CO2. The system comprises a hydrate reactor, a CH4 gas source, a CH4 supply system, a CO2 supply system, a refrigerating system, a gas recovery system and a data acquisition system, wherein the CH4 gas source is connected with a reaction system and used for providing pressure stabilization for the preparation of the hydrate at the earlier stage; the CH4 supply system is used for recording the using amount of CH4; the CO2 supply system is connected with the hydrate reactor and used for providing a CO2 gas source for the exploitation of the hydrate at the later stage of an experiment; the refrigerating system is connected with the hydrate reactor and used for timely removing heat from the hydrate reactor or supplying heat to the hydrate reactor to keep the temperature condition in the hydrate reactor stable; the gas recovery system is connected with the hydrate reactor and used for recovering and storing mixed gas discharged from the outlet of the hydrate reactor and measuring the flow rate of the mixed gas; and the data acquisition system is connected with the CH4 supply system, the CO2 supply system, the hydrate reactor, the refrigerating system and the gas recovery system respectively and used for acquiring data from the systems. The process of exploiting the natural gas hydrate by displacing the CO2 can be comprehensively researched.
Owner:GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
Adsorbent-based pressure stabilization of pressure-regulated fluid storage and dispensing vessels
InactiveUS20170122496A1Vessel mounting detailsVessel geometry/arrangement/sizePressure stabilizationEngineering
A fluid supply package is described, including a pressure-regulated fluid storage and dispensing vessel comprising a fluid dispensing flow path, and adsorbent disposed in the flow path or in fluid communication therewith to reversibly adsorb fluid from the flow path for pressure stabilization of fluid dispensed from the vessel. A corresponding method is disclosed, of stabilizing fluid pressure during dispensing of fluid through a fluid flow path in a fluid supply package, by contacting the fluid in the fluid flow path with an adsorbent on which the fluid is reversibly adsorbable during the dispensing of fluid. Such approach of using a pressure management adsorbent stabilizes fluid pressure during fluid dispensing, and combats pressure oscillations that may occur during initiation or subsequent performance of fluid dispensing.
Owner:ENTEGRIS INC
Multichannel integrated olfactory analog instrument and on-line analysis method for biological fermentation process
The invention discloses a multichannel integrated olfactory analog instrument and an on-line analysis method for a biological fermentation process. The characteristic I is that a gas sensor array, a gas sensor array constant-temperature working chamber of the gas sensor array, a multichannel fermentation tail gas precision automatic sample injection system and a computer control and analysis system are integrated in a test box. The characteristic II is that a plurality of two-position two-way electromagnetic valves realize automatic switching among multiple paths of fermentation tail gas, among the fermentation tail gas, clean air and environment air as well as between the 6,000ml / m flow and the 500ml / m flow. The characteristic III is that five biological fermentation processes, namely five fermentation tanks, can be detected and analyzed at the same time on line. The characteristic IV is that a precision throttling valve and a pressure stabilization valve are arranged in the olfactory analog instrument and realize the pressure stabilization capacity and the flow stabilization capacity of gas. The characteristic V is that the olfactory analog instrument and a plurality of fermentation tanks are plug-and-play and are simple and convenient to operate. Therefore, multiple biological fermentation processes realize automation, networking and visualization of the detection and analysis processes.
Owner:EAST CHINA UNIV OF SCI & TECH
Two-stage axial-flow type online gas-liquid separation device for underwater pipeline
ActiveCN104801071ASimplify the gathering and transportation processRealize self-cleaningCombination devicesLiquid degasificationOcean bottomPressure stabilization
The invention provides an online gas-liquid separation device for an underwater pipeline, and applies to efficient gas separation of well flow of an underwater production system. The gas-liquid separation device realizes online installation and operation of the pipeline and has the characteristics of simplifying of oil and gas gathering and transferring processes, reduction of gathering and transferring energy consumption and compact structure; a uniform gas-liquid mixing device adopts layered screw blades in opposite rotating directions to crush big bubbles to form uniform gas-liquid mixing flow, so that the gas-liquid ratio adaption range of the device is broad; a first-stage axial flow device adopts a single vertical cylinder to implement first-stage vertical high-speed swirling flow gas-liquid separation to remove most liquid phase, a second-stage axial flow device adopts double horizontal cylinders to implement second-stage horizontal layered rotating flow gas-liquid separation to remove the residual liquid flow, and efficient separation of the two-phase well flow is realized; a scrubbing balancer adopts double vertical cylinders to realize buffer pressure stabilization and complete separation of the gas-phase well flow, and a cleaning pipe performs cleaning operation automatically; a gas-liquid separation control system implements remote automatic control so as to control the well flow of the submarine pipeline and realize dynamic balance of pressure of the scrubbing balancer.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
Experiment method for packer working performance and apparatus thereof
InactiveCN101025083AReduce experiment costWorking frequency bandwidthSurveySealing/packingAxial displacementInternal pressure
The invention relates to an experiment method and device for packer operating performance in oil field, testing contact stress and axial displacement of packer rubber tube through making pressurization, pressure stabilization and pressure removal on the experiment device to test the amplitudes and distribution rules of stress and strain of surface characteristic points of the packer parts under the action of external load. And the experiment method: applying pressure on the central pipe of the packer by electric pressure test pump according to the designed load step, setting the packer and keeping the pressure stable for a period of time and besides, testing the stress data on surface characteristic points of the rubber tube in this course; and finally removing the annulus pressure in the upper part of the packer, and then slowly removing the inner pressure in the central pipe and testing the stress data of the surface characteristic points in this course. And the experiment device: packer central pipe and upper and lower joints of the experiment sleeve are respectively connected with electric pressure test pump; the surface of the experiment sleeve is axially, spirally and equidistantly distributed with bores in the part measuring range, and pressure sensors are installed in the bores. And the invention has features of simple structure, high working reliability and higher sensitivity.
Owner:SOUTHWEST PETROLEUM UNIV
Method and device for measuring air permeability of battery diaphragm
InactiveCN104020093ADetermine the temperatureEasy to comparePermeability/surface area analysisPressure stabilizationElectrical battery
The invention belongs to the technical field of battery, and particularly relates to a method and device for measuring air permeability of a battery diaphragm at different pressures and different temperatures. The method for measuring the air permeability of the battery diaphragm comprises the steps of fixing and sealing the battery diaphragm; stetting a diaphragm temperature by a heating device; introducing air from an air inlet side and setting a pressure value; metering a time required by passing a certain volume of air from the air inlet side; and calculating the air permeability of the diaphragm. The device for measuring the air permeability of the battery diaphragm comprises an air supply system, a pressure stabilization system, a variable temperature measuring system and a metering system. The method and device for measuring the air permeability of the battery diaphragm have the advantages of simple operations, low cost, accurate data and high practicality. Meanwhile, the method and device can measure the air permeability of the diaphragm at different temperatures, ascertain variable relationships between the air permeability of the diaphragm and the temperature, and further study a hole closing temperature and a diaphragm broken temperature of the battery diaphragm, and can predicate battery performance changes caused by temperature variation.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI
Controlled fluid energy delivery burst cartridge
A modified gas delivery cartridge. A conventional straight-sided brass cartridge case is primed and then filled with solid propellant. A burst cup is then inserted in the case mouth. The burst cup is embossed with a cross or other shape to promote predictable rupture. Once the burst cup is in place, the upper edges of the cartridge case are rolled over the burst cup. In operation, the propellant is ignited to produce pressure within the sealed case. This pressure builds steadily until the embossed cross in the burst cup ruptures. The propellant gases are then vented in a metered fashion through the ruptured burst cup. However, the burst cup is retained by the case so that no solid object escapes the high pressure cartridge. In addition, by carefully designing the shape of the burst cup and the components surrounding it, it is possible to create an efficient expansion nozzle to better meter the propellant gases.
Owner:MARTIN ELECTRONICS
Pressure-stabilizing, liquid-supplementing and gas-exhausting device of closed liquid cooling system
ActiveCN104703444ALow costAchieve rehydrationCooling/ventilation/heating modificationsExpansion tankPressure stabilization
The invention provides a pressure-stabilizing, liquid-supplementing and gas-exhausting device of a closed liquid cooling system. The pressure-stabilizing, liquid supplementing and gas-exhausting device of the closed liquid cooling system comprises an air-cooling liquid heat exchanger, a load heating element, a liquid storage tank, a liquid supplementing pump, a spiral micro bubble separator, an electric heating water tank, an expansion tank, a liquid supplying pump, electromagnetic valves, ball valves, and a stop valve. The pressure stabilization, the liquid supplement and the gas exhaust of the closed liquid cooling system are achieved by the liquid supplementing pump, the first electromagnetic valve, the second electromagnetic valve, the second ball valve, the third ball valve, the fourth ball valve, the fifth ball valve and the sixth ball valve, in association with the spiral micro bubble separator. The pressure-stabilizing, liquid-supplementing and gas-exhausting device of the closed liquid cooling system is low in cost and convenient in operation. The pressure-stabilizing, liquid-supplementing and gas-exhausting device of the closed liquid cooling system is of a great practical value.
Owner:合肥天鹅制冷科技有限公司
Wide-area air inlet pressure regulating system for hypersonic wind tunnel
ActiveCN111006841AHigh pressure regulation accuracySatisfies the requirements of high-precision air intake pressure regulation in a wide areaAerodynamic testingPressure stabilizationInlet pressure
The invention discloses a wide-area air inlet pressure regulating system for a hypersonic wind tunnel. A corresponding air inlet pressure regulating mode is selected according to the incoming flow pressure of a front chamber; wide-area high-precision air inlet pressure regulating requirements for providing vacuum incoming flow pressure, medium-pressure incoming flow pressure and high-pressure incoming flow pressure can be met at the same time; large-range regulation of airflow flow under different Mach number spray pipes of the hypersonic wind tunnel can be achieved, the pressure regulating precision is high, preparation time of air exhaust and preheating before a wind tunnel test is greatly shortened, a pressure pre-charging function before the test is achieved, the pressure is stable, the regulating speed is high, and the test blowing time can be effectively prolonged.
Owner:CHINA ACAD OF AEROSPACE AERODYNAMICS
Airborne oxygen preparing-nitrogen preparing coupling system with expansion machine and method thereof
PendingCN107840315AIncrease speedReduce volumeNitrogen purification/separationSpecific gas purification/separationAviationPressure stabilization
The invention discloses an airborne oxygen preparing-nitrogen preparing coupling system with an expansion machine and a method thereof, and belongs to the aviation system technical field. A specific principle comprises that entraining air from an engine gas compressor is divided into two ways after pressure stabilization and cooling; one way of entraining air is used for doing work to the expansion machine for driving two compressors; the other way of entraining air is boosted by the first compressor, and then passes through a hollow fiber membrane nitrogen preparing system to prepare nitrogen-rich gas for an inserting aircraft fuel tank; discharged exhaust gas (oxygen-rich gas) in the nitrogen preparing system is boosted by the second compressor and then passes through a molecular sieve oxygen preparing system to obtain oxygen, and oxygen flows into a cabin or a cockpit and is outputted as oxygen for the flight crew to breathe. The system has no electrically driven equipment, is feasible to prepare, high in separation membrane efficiency, reliable in operation, small in size and light in weight, and conforms to the airborne equipment requirements.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Single cylinder diesel EGR device based on high-pressure air two-stage supercharging and control method
ActiveCN105464848AResolve refluxAchieve reflowExhaust gas recirculationEngine controllersPressure stabilizationTurbocharger
The invention provides a single cylinder diesel EGR device based on high-pressure air two-stage supercharging and a control method. The single cylinder diesel EGR device comprises an air inlet three-way valve, an exhaust three-way valve, a bypass valve, a one-way valve, an electromagnetic control valve, a first turbocharger, a second turbocharger, a waste gas pressure-stabilization tank, an EGR cooler, a temperature sensor and a flow meter. According to the single cylinder diesel EGR device, the two turbochargers in series connection are controlled so that two-stage supercharging of EGR waste gas can be achieved through high-pressure and high-speed compressed air, the problem of EGR waste gas backflow under different air inlet pressures, especially high air inlet pressure is effectively solved, and meanwhile the requirements for EGR adjustment under different medium, high and low work conditions can be met. The single cylinder diesel EGR device is particularly suitable for marine diesel engine energy saving and emission reduction or single cylinder diesel testing places or other place.
Owner:HARBIN ENG UNIV
Water-spray screw steam compressor
ActiveCN105927548ASmall heat transfer temperature differenceAvoid wastingSealing arrangement for pumpsRotary/oscillating piston pump componentsPressure stabilizationSteam pressure
The invention provides a water-spray screw steam compressor. Three seals are arranged between a working cavity of the compressor and a bearing cavity; steam seal is realized through spraying high-pressure liquid water in space between the first seal and the second seal; besides seal through spraying water, the steam absorbing superheat degree can be lowered through spraying water in a steam absorbing cavity to increase the mass flow rate of compressed steam; or water is sprayed in a compression cavity at the steam absorbing end moment to effectively lower the temperature of compressed steam and the steam discharging superheat degree, so that the working process of the compressor is similar to a constant temperature compression process, and the efficiency of the compressor is improved. A pressure stabilization tank is arranged on the steam discharging side of the compressor; the steam pressure in the pressure stabilization tank is adjusted to ensure efficient operation of the compressor under different working conditions. High-temperature water flowing out of a water route of the pressure stabilization tank is mixed with low-temperature softened water or distilled water, the mixed water enters a heat exchanger and is recycled to provide the steam heat of a user and to realize steam superheat degree adjustment; adjustment of temperature and flow of sprayed water can be realized through adjusting flow of the softened water, distilled water or water entering the heat exchanger.
Owner:XI AN JIAOTONG UNIV
System and method for temperature reduction and pressure stabilization of liquefied natural gas storage tank
InactiveCN102011939ASimple structureReduce design costPipeline systemsPressure vesselsPressure stabilizationProcess engineering
The invention provides a system for temperature reduction and pressure stabilization of a liquefied natural gas storage tank, comprising a liquid nitrogen delivery device, a liquefied natural gas storage tank and a discharge duct, wherein the liquefied natural gas storage tank is internally provided with a heat exchange tube; the inlet of the heat exchange tube is connected with the liquid nitrogen delivery device through a pipeline, and the outlet of the heat exchange tube is connected with the discharge duct through a pipeline; the liquefied natural gas storage tank is provided with a pressure sensor connected with the liquid nitrogen delivery device; the discharge duct is internally provided with a vaporizer; and the liquid nitrogen delivery device is externally connected with a liquid nitrogen source. The invention also provides a method for temperature reduction and pressure stabilization of the liquefied natural gas storage tank, which is realized by the system. In the system provided by the invention, the temperature and pressure conservation functions of the liquefied natural gas storage tank can be realized through the arrangement of the heat exchange tube in the liquefied natural gas storage tank, thus the structure is simple and easy to understand, and the system is suitable for various liquefied natural gas storage tanks and has low design cost and the like.
Owner:SOUTH CHINA UNIV OF TECH
Coanda airfoil panel ventilating fan
InactiveCN105351230AKeep it steadyConvenient inductionPump componentsPump installationsPressure stabilizationWall plate
The invention discloses a Coanda airfoil panel ventilating fan. The Coanda airfoil panel ventilating fan comprises a cabinet body, Coanda airfoil panels, two half Coanda airfoil panels, a ventilating fan and gauze. The cabinet body comprises a fan body, a pressure stabilization cavity and a frame used for assembling the Coanda airfoil panels and the half Coanda airfoil panels; a cabinet body front panel and a cabinet body rear panel are provided with air inlets which are communicated with the fan cavity; the inner side end surface of the cabinet body front panel and the inner side end surface of the cabinet body rear panel are separately provided with two parallel guide rails; two movable baffle plates are arranged between every two guide rails; and the gauze is arranged on the frame. The pressure stabilization cavity is arranged on the upper end of the fan cavity and is communicated with the fan cavity through a ventilation opening; and the frame is arranged on the upper end of the pressure stabilization cavity. The ventilating fan is arranged on the upper end of the fan cavity; the Coanda airfoil panels and the half Coanda airfoil panels are arranged in the frame; one end of each of the Coanda airfoil panels and the half Coanda airfoil panels is communicated with the pressure stabilization cavity, and the other end is connected with the wall plate of the frame and is sealed through the wall plate of the frame; the two half Coanda airfoil panels are separately connected with the wall plate of the frame to form a pipe body inner cavity; and the Coanda airfoil panels are arranged between the two half Coanda airfoil panels.
Owner:NANHUA UNIV
Combustion device for researching soot characteristics in low-pressure environment
InactiveCN103983738AAchieve pressure controlGuaranteed feasibilityChemical analysis using combustionDiffusion flamePressure stabilization
The invention provides a combustion device for researching soot characteristics in a low-pressure environment. The combustion device comprises a stainless steel low-pressure sealed cabin, a diffusion flame combustor, a gas mass flow control device, a high-voltage arc ignition device, an observation window, an auxiliary cleaning device, a digital display programmable logic controller (PLC), a vacuum pump group, an operating pressure stabilization device, a balance pressure air source and a detachable calibration tool clamping groove. The vacuum pump air exhaust and the balance pressure air source are simultaneously controlled through the control device in a low-pressure environment in the cabin, so that target pressure of the cabin is achieved. The inflow of two paths of gases of the combustor and the balance pressure air source is controlled by the gas flow controller, and after a pipeline is connected each time, the gas tightness at each joint of gas transport pipelines in the whole system is checked. A pressure meter is designed on a quick release upper flange plate. Operating pressure can be set and is dynamically monitored in real time through a PLC control interface, and the inflow of fuel gas, following wake air and the balance air source can be set.
Owner:UNIV OF SCI & TECH OF CHINA
Constant head mass-flow seepage deformation water pressure automatic control device
InactiveCN103345278AEliminate the effects ofSave waterFluid pressure control using electric meansPermeability/surface area analysisAutomatic controlPressure stabilization
A constant head mass-flow seepage deformation water pressure automatic control device comprises a water supply tank, a water inlet pipe is arranged at the bottom of the water supply tank, and the bottom of the water supply tank is communicated with the bottom of a seepage deformation instrument through a water conveying pipe which is provided with a booster pump, an automatic waterflow regulation valve and a pressure gage. The booster pump and the automatic waterflow regulation valve are used for ensuring that constant head mass-flow seepage deformation water with stable pressure is provided for the seepage deformation instrument, and accuracy and stability of experiment data are ensured. A water return pool and a water return pipe with a self-priming pump are arranged to recycling seepage deformation water, and the water resource is saved. Due to the fact that water is recycled in the indoor environment, external water is not needed, water temperature changes in the testing process are effectively controlled, influences of water temperature on a testing result are eliminated, and testing precision is improved. Through the combination of the booster pump, the automatic waterflow regulation valve and the high-precision pressure gage, automatic control is achieved, and labor intensity in the testing process is greatly lowered.
Owner:HUBEI GEZHOUBA TESTING
Electronic type pulse width modulation (PWM) intermittence spray type variable spraying controller
ActiveCN103163871ALower requirementAchieve independent regulationProgramme total factory controlInsect catchers and killersControl circuitPwm signals
The invention discloses an electronic type pulse width modulation (PWM) intermittence spray type variable spraying controller. The controller is composed of a power source, a control panel, a PWM signal generator, a phase inverter, an electromagnetic valve drive circuit, electromagnetic valves, a proportional overflow valve and a proportional overflow valve control circuit. The electromagnetic valves are placed in front end pipelines of all spray heads in series. One end of the proportional overflow valve is connected with a spray rod main pipeline, and the other end of the proportional overflow valve is connected with a liquid medicine jar. The PWM signal generator can output multichannel PWM signals which are same in frequency, and independent and adjustable in duty ratio, and the frequency and the duty ratio can be adjusted through rotary knobs on the control panel. The proportional overflow valve control circuit adjusts the opening height of the proportional overflow valve according to set spray pressure, machine set operating speed and the total number of electromagnetic valves which are opened at present, and keeps system spray pressure stable. The controller is convenient to use, and can be used for controlling application dosages of a spray rod type spraying machine due to the fact that a driver can adjust the spray pressure and application dosages of each spray head on line through the rotary knobs on the control panel.
Owner:JIANGSU UNIV
Automatic grouting control device of push bench and method
InactiveCN101555799AReduce work stressAvoid dangers such as subsidenceUnderground chambersTunnel liningAutomatic controlEngineering
The invention relates to an automatic grouting control device of a push bench, comprising a grouting master pipe, a grouting dividing pipe, a plurality of grouting components and a control component; the grouting component is arranged at the tail end of the grouting dividing pipe and comprises two grouting branch pipes which are parallelly connected; one grouting branch pipe is sequentially provided with a pneumatic valve used for on and off of the grouting branch pipe and a pressure sensor used for detecting grouting pressure; the other grouting branch pipe is provided with a manual valve; the control component comprises an industrial computer, an input module and an output module; the industrial computer can preset the pressure values of all the grouting ports and deviation range and carry out operation and storage of values; the input module converts pressure signals input by the pressure sensor into digital signals and transmits the digital signals to the industrial computer; and the output module digital signals transmitted by the industrial computer into trigger signals so as to control the opening and closing of the pneumatic valve. The automatic control device realizes automatic grouting process by adopting grouting pressure as control parameters, has the advantages of fast response, stable grouting pressure and high construction efficiency and is applicable to grouting construction of the push bench.
Owner:SHANGHAI TUNNEL ENGINEERING CO. LTD.
Fluid leak containment system
InactiveUS20120027517A1Efficient captureEffectively containWater cleaningFluid removalPressure stabilizationControl system
Owner:SHIFFERAW TESSEMA DOSHO
Separator and phase-split conveying method for eliminating plug flow on serious segments by utilizing same
InactiveCN1632369ASimple structureSpeed up the flowLiquid degasificationFluid removalPressure stabilizationLevel sensor
A separator and a phase-splitting conveying method for eliminating severe slug flow by using the separator. The separator includes a shell, which is connected with an incoming flow pipe and a gas riser pipe, and is provided with a liquid level sensor and a pressure sensor on the shell. A riser pipe is inserted and extended to the bottom of the shell, the part of the riser pipe protruding from the shell is provided with a liquid phase pump connected to the riser pipe through a valve, and a control valve is set on the gas riser pipe close to the outlet of the shell. The separator of the present invention is installed at the junction of the mixed pipeline and the rising pipe, the gas-liquid fluid in the mixed pipeline enters the shell of the separator through the incoming flow pipe, and the liquid level signal and pressure signal are used to adjust the control valve. The opening makes the liquid level and pressure stable. After the gas and liquid are separated in the separator, the liquid enters the riser and is pressurized by the liquid phase pump to be transported to the onshore platform device. The gas enters the onshore platform device through the gas riser through the control valve. The invention has a simple structure, can conveniently and accurately control the flow of gas and liquid, and achieves the purpose of eliminating severe slug flow.
Owner:XI AN JIAOTONG UNIV
Automatic regulating device for flow pressure of gas chromatograph
InactiveCN101769908ALow costLower requirementComponent separationAuto regulationPressure stabilization
The invention discloses an automatic regulating device for flow pressure of a gas chromatograph, which comprises at least one pressure stabilization valve and at least one needle valve. The automatic regulating device also comprises at least one proportional valve, at least one flow sensor and a detection control circuit. The pressure stabilization valve is connected with the needle valve and the proportional valve. An air source of the gas chromatograph passes through the pressure stabilization valve, the needle valve and the proportional valve, is detected by the flow sensor and then enters a detector. The detection control circuit regulates the proportional valve to control the flow according to the data and the preset value provided by the flow sensor. The automatic regulating device for the flow pressure is adopted to substitute for a mechanical regulating valve and a mechanical pressure gage, achieves the flow control precision of the mechanical valve, and meets the basic requirement on automatic operation of the gas chromatograph.
Owner:上海仪电分析仪器有限公司
Cement paste system choosing method capable of preventing oil, gas and water from channeling
The invention relates to a cement paste system capable of preventing oil, gas and water from channeling, in particular to a cement paste system choosing method capable of preventing oil, gas and water from channeling. The cement paste system choosing method is characterized in that (1) aiming layers with short oil layer sealing sections and shallow oil pool burial depth can choose a rapid hardening cement formula; (2) aiming layers with complex stratums, abnormal interlayer pressure and active stratum fluid can choose a water loss reduction coagulation promoting formula, water loss reduction expansion cement paste formula, a right angle densification performance formula, or a water loss reduction expansion early strength cement paste formula; (3) aiming layers with large oil layer span, long sealing sections and abnormal interlayer pressure can choose three coagulation cement paste system according to pressure stabilization principle. The cement paste system choosing method can prevent pressure leakage stratums and guarantee fluid of pressure stabilization stratums.
Owner:CHANGQING GUJING OF CNPC CHUANQING DRILLING ENG
Gas-solid two-phase erosion wear testing device
The invention discloses a gas-solid two-phase erosion wear testing device. A first compressor is connected with a combustion chamber by virtue of a pressure stabilization tank and a dryer; a fuel nozzle and an ignition device are arranged on the combustion chamber; a feeder and a second compressor are connected to a particle mixer; one path of high-temperature gas generated by the combustion chamber passes through a needle valve and an auxiliary heating pipe and then are connected to one inlet of an organic glass test section; another path of the high-temperature gas generated by the combustion chamber and the particle outlet of the particle mixer are connected into the other inlet of the test section by virtue of a two-phase acceleration device; gas-solid two-phase particles in the test section are sprayed to a target material; a thermocouple and a separator are connected with the test section; the separator is communicated with the atmosphere; a CCD camera is aligned with the target material in the test section; and the motion condition of spraying the gas-solid two-phase onto the target material is observed and recorded by using a PIV testing technology and a computer. According to the device disclosed by the invention, the impact rebound rule of spraying the micron-level particles onto the target material and the deformation and corrosion conditions on the target material can be researched.
Owner:ZHEJIANG SCI-TECH UNIV
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