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81results about How to "Guaranteed experimental accuracy" patented technology
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Tensile test special fixture used for sheet metal or metal foil and using method
The invention relates to a tensile test special fixture used for sheet metal or metal foil. The tensile test special fixture comprises an upper clamping head, a lower clamping head, two sets of guide post guide sleeves and threads through which the upper clamping head is connected with a stretcher stretching head base seat, wherein the upper clamping head comprises a T-type clamping component, a small clamping component and two pairs of bolts and nuts, and the upper clamping head is same to the lower clamping head in structure. Through holes are reserved in the upper clamping head and the lower clamping head along the direction parallel to the sample tensile direction, an upper guide sleeve is installed in the lower clamping head through hole, and the upper clamping head through hole is connected with the guide sleeves through guide posts. Bolt holes are reserved in the T-type clamping component and the small clamping component which are in the upper clamping head along the direction perpendicular to the sample tensile direction, and samples are clamped due to the fact that the two groups of bolts penetrate through the reserved holes of the clamping components. The tensile test special fixture used for the sheet metal or the metal foil is simple in structure and convenient to install and clamp, and overcomes various difficulties when the sheet metal and the metal foil are stretched.
Owner:JIANGSU UNIV
Novel device for pseudo tri-axial creep of rock and earth engineering test block and using method of device
InactiveCN103196746AGuaranteed constant readingPrevent pressure changesMaterial strength using tensile/compressive forcesCompression deviceAmbient pressure
The invention relates to a novel device for pseudo tri-axial creep of a rock and earth engineering test block and a using method of the device. The novel device comprises a plurality of surrounding steel plates which surround a rock-earth test block, wherein each surrounding steel plate is connected with a spring vertical compression device with adjustable pressure; a longitudinal loading device with adjustable pressure is arranged at the top part of the rock-earth test block; a pressure sensor is arranged between the spring vertical compression device and the surrounding steel plates; the pressure sensor and the loading device are connected with a control device; and the spring vertical compression device is connected with the longitudinal loading device. By adopting the novel device, a plurality of inconveniences in experiments in the prior art are avoided; and the spring pressure is simple, is easy to achieve and is convenient to adjust; through compressing the spring by a rotary screw, a large amount of complex mechanical control of the current devices are avoided, and therefore the experiment efficiency is greatly improved; the deformation in a creep process is relatively slow, the light error caused by the slight extension of the spring is avoided by adjusting the rotary screw in time, and therefore the experiment accuracy is guaranteed; and by adopting the pressure sensor, the creep ambient pressure is kept constant, and therefore the accuracy of a low-intensity pseudo tri-axial creep test is guaranteed.
Owner:SHANDONG UNIV
A method and device for testing the frictional resistance coefficient of the inner wall of a pipeline
InactiveCN102269690ATest the coefficient of frictional resistanceGuaranteed turbulence intensityMachine part testingUsing mechanical meansEngineeringDrag coefficient
The invention discloses a device for testing a frictional drag coefficient of an inner wall of a pipeline. The device consists of a high speed fan, a frequency converter, a turbulence smoothening section, a pipeline bracket, the pipeline, a multitube pressure gauge, a Pitot tube and a slanting leg manometer, wherein the frequency converter is connected with the high speed fan; the front end of the turbulence smoothening section is connected with the outlet of the high speed fan, and the rear end is connected with the pipeline; the pipeline is arranged on the pipeline bracket with an adjustable mechanism; pressure testing holes are processed at different positions of the pipeline and are connected with the multitube pressure gauge through tee joints and hoses; and at the tail end of the pipeline, the wind speed in the pipeline is tested by the Pitot tube, and the Pitot tube is connected with the slanting leg manometer. A method for testing the frictional drag coefficient of the inner wall of the pipeline comprises the following six steps of: 1, selecting a testing scheme; 2, selecting a testing means; 3, distributing the pressure testing holes; 4, analyzing the experimental accuracy; 5, designing and manufacturing the pipeline bracket; and 6, assembling the testing device, wiring and debugging. The invention has application value in the technical field of pipeline pressure and friction drag testing.
Owner:BEIHANG UNIV
Four-point bending test clamp
InactiveCN103604691AGuaranteed Experimental AccuracySimple structureStrength propertiesFour point flexural testEngineering
The invention discloses a four-point bending test clamp used for measuring the bending performance of test pieces, and the four-point bending test clamp is detachably installed on an universal tester or a press for four-point bending experiments. The four-point bending test clamp comprises a supporting part and a loading part; the upper surface of a bottom plate in the supporting part is provided with multiple second screwed hole groups arranged along the length direction of a test piece at equal intervals, and two adjustable bearers are adjusted by the screwed hole groups for adjusting the distance between the two adjustable bearers and further for adjusting the span between two supporting rollers; at least two first screwed hole groups are arranged along the length direction of the test piece at equal intervals and at each of the two sides of the surface facing to the test piece of a loading main body in the loading part; and a pressing roller unit employs screws corresponding to the first screwed hole group for selective screwing with screwed holes and further for adjusting the span between the two supporting rollers. The provided four-point bending test clamp installed on the universal tester or the press for measuring the bending performance of the test piece has the characteristics of being simple in structure and convenient to dismount and mount while helping to guarantee the test precision.
Owner:UNIV OF SHANGHAI FOR SCI & TECH
Testing system and testing method for measuring rock fracture multiple-phase seepage characteristics
ActiveCN108709843AGuaranteed experimental accuracyAccurate opening distributionEarth material testingPermeability/surface area analysisEngineeringPilot system
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
Nonconventional natural gas rock-gas-heat multi-process coupling test system
ActiveCN106840991AGuaranteed pressureGuaranteed experimental accuracyEarth material testingPermeability/surface area analysisFluid controlNatural gas
The invention discloses a nonconventional natural gas rock-gas-heat multi-process coupling test system. The nonconventional natural gas rock-gas-heat multi-process coupling test system consists of a fluid control system, a rock core adsorbing / desorbing and gas analyzing system, a vacuum suction system and a hydraulic cracking system, wherein the fluid control system is respectively communicated with the rock core adsorbing / desorbing and gas analyzing system, the vacuum suction system and the hydraulic cracking system. The nonconventional natural gas rock-gas-heat multi-process coupling test system has the advantages that the multiple coupling process tests of coal rock permeation evolution under the real three-axis or false three-axis stress loading, temperature loading, and multi-component gas diffusion conditions are realized, the whole-process data, such as experiment temperature, component gas flow rate and adsorbing characteristic, are dynamically stored and processed through software, and the nonconventional gas-enriching reservoir forming, adsorbing and desorbing rule of rock at stratum temperature, pressure and fluid medium can be scientifically simulated; the scientific experiment support is provided for the extreme complicated deep resource exploitation.
Owner:CHINA UNIV OF MINING & TECH
Clamp special for drilling, milling and cutting carbon fiber composite material
ActiveCN105127792AImprove experimental precisionImprove experimental efficiencyWork clamping meansPositioning apparatusEngineeringMechanical engineering
The invention relates to a clamp special for drilling, milling and cutting a carbon fiber composite material and belongs to the field of mechanical machining clamps. The clamp consists of three portions including a cutting angle adjusting device, a plate length adjusting device and a plate thickness adjusting device. In the cutting angle adjusting device, an adapter plate is installed on an angle-adjustable worktable through a T-shaped bolt, a hand wheel is installed on the angle-adjustable worktable, an inclination angle of a worktable top is adjusted by turning the hand wheel so as to complete cutting at different machining angles. The plate length adjusting device is composed of a left slide block, a right slide block and a sliding rail. In the plate thickness adjusting device, a left clamp body and a right clamp body are respectively installed on the left slide block and the right slide block through bolts. A left press plate and a right press plate are respectively installed on the left clamp body and the right clamp body through bolts. By means of the special clamp, an edge milling or grooving experiment of four edges of a sample piece to be experimented can be completed through one-time clamping. The clamp is simple in structure and good in flexibility, and the experiment accuracy and experiment efficiency are improved.
Owner:DALIAN UNIV OF TECH
Weight method-based high-temperature and high-pressure isothermal adsorption measurement device and method
PendingCN108458947ALow costGuaranteed experimental accuracyWeighing by absorbing componentMeasurement deviceExperimental methods
The invention discloses a weight method-based high-temperature and high-pressure isothermal adsorption measurement device and method. The device comprises a weighing system, wherein the weighing system comprises a balance, a weighing conversion device, weights and a sample barrel; the balance is mounted on a balance bracket; a hanging hook is arranged at the bottom of the balance; the weighing conversion device comprises three groups of motors, shifting forks and limiters; the shifting forks are horizontally arranged on the balance bracket; the limiters are arranged above and below the shifting forks in parallel; each motor is arranged at one end of each shifting fork and is used for driving the shifting fork to move up and down; the weights comprise a weight I and a weight II; the weightI and the weight II are hung on the hanging hook through metal wires; the sample barrel is hung on the hanging hook through a metal wire and is located between the weight I and the weight II. The measurement method is completed through steps of sample treatment, a blank experiment, a buoyancy experiment, an adsorption experiment and the like. On the basis of guaranteeing the experimental accuracyand reliability, the technical weight method-based high-temperature and high-pressure isothermal adsorption measurement device reduces the instrument cost and is favorable for popularization of a weight method-based isothermal adsorption experimental method.
Owner:CHENGDU HAOHAN WELL COMPLETION & LOGGING SCI & TECH
Measurement method and device for large-curvature-radius non-zero-digit interference based on virtual Newton's ring
InactiveCN106595529AThe experiment process is simpleGuaranteed experimental accuracyUsing optical meansNewton's ringsComputer science
The invention provides a measurement method and device for large-curvature-radius non-zero-digit interference based on a virtual Newton's ring. Circular carrier-frequency Newton's ring interferograms are converted into linear carrier-frequency interferograms via second-order polar coordinates, a low-frequency moire fringe graph after low-pass filtering is demodulated, wavefront differential data between a to-be-measured spherical surface and a standard spherical surface is extracted, and a calculation formula of the curvature radius is derived. On the basis of a model of a ZEMAX software based Fizeau spherical large-curvature-radium non-zero-digit detection system, a finite iteration method is used correct backhaul errors during Newton's ring interferogram collection in non-zero-digit detection. The Fizeau spherical large-curvature-radium non-zero-digit detection system is constructed, and verification for the spherical large-curvature-radium non-zero-digit measurement technology based on the virtual Newton's ring is completed.
Owner:NANJING UNIV OF SCI & TECH
Automobile buckle insertion and extraction force and stress-strain test fixture
The invention belongs to a positioning test fixture, and particularly relates to an automobile buckle insertion and extraction force and stress-strain test fixture. The test fixture comprises two parts including an insertion force fixture and an extraction force fixture corresponding to the insertion force fixture; the insertion force fixture comprises an insertion force fixture clamping block connected with a test machine, a first body, a second body, a third body, fixed sliding blocks and pressing circular plates; and the extraction force fixture comprises an extraction force fixture clamping block, an extraction force supporting assembly, a fixed baffle, a clamping device, a rotating knob and a clamping force adjusting round rod. The fixture is used during testing of stress-strain performance of an automobile buckle, and can clamp and position the buckle well during testing of the stress-strain of the automobile buckle, and slots in different models are formed in an H-shaped plate, so that buckles in various models can be tested. The test fixture is reasonable in structural design and convenient to operate; and the insertion and extraction force performance of plastic buckles can be tested accurately.
Owner:JILIN UNIV
Probe-based automatic airflow pressure and velocity measurement device
InactiveCN102192999AFully automatedSimple structureFluid pressure measurement by electric/magnetic elementsIndication/recording movementLinear motionControl system
The invention discloses a probe-based automatic airflow pressure and velocity measurement device which comprises a probe, a probe rotating motion adjusting mechanism, a probe linear motion adjusting mechanism, a mounting support mechanism and a data acquisition and control system. The device is characterized in that one end of the probe is arranged in the hollow shaft of a hollow motor and fixed by virtue of a positioning / locking device, the other measuring end of the probe passes through a sealing device and then extends to a moving fluid in a measured object, and the sealing device is fixed in the through hole of a vertical bracket body of a movable platform bracket; the probe rotating motion adjusting mechanism is arranged on the movable platform by virtue of a hollow motor bracket; the probe linear motion adjusting mechanism is integrally arranged on a horizontal bracket body of the movable platform bracket; the data acquisition and control system is connected with the probe by virtue of a data acquisition terminal C so as to realize data acquisition; and the data acquisition and control system is connected with the hollow motor by virtue of a first wire connecting terminal D so as to realize rotating motion control, and connected with the linear motion motor by virtue of a second wire connecting terminal E so as to realize linear motion control.
Owner:XI AN JIAOTONG UNIV
Method and device for detecting pressure of laser shock wave
InactiveCN102519642AAddressing the drawbacks of impact damageSimple structureApparatus for force/torque/work measurementShock waveMomentum
The invention relates to the field of measuring the mechanics parameter of laser shock, in particular to a method and a device for measuring the laser shock force by use of a pendulum bob. In the invention, the magnitude of the laser shock force is calculated according to the swinging angle of the pendulum bob after the pendulum bob is shocked by laser and the acting time of the laser shock based on the momentum theorem and the conservation law of mechanical energy. The method and device provided by the invention are based on the momentum theorem and the conservation law of mechanical energy, and thus the measurement principle is clear; and the equipment measuring the shock force by use of the pendulum bob has a simple structure and low cost, and is convenient to operate.
Owner:JIANGSU UNIV
Visual CO2 anhydrous fracturing fluid rheological property test system and test method
PendingCN110715880AAvoid physical contactEliminate distractionsFlow propertiesGas cylinderFracturing fluid
The invention discloses a visual CO2 anhydrous fracturing fluid rheological property test system and test method. The system comprises a CO2 gas cylinder, a piston container and a measuring cup; an outlet of the CO2 gas cylinder is connected with an upper inlet of the piston container, and an upper outlet of the piston container is connected with an inlet of the measuring cup; and a pressure device is further arranged at the bottom of the piston container. The visual CO2 anhydrous fracturing fluid rheological property test system disclosed by the invention has a compact overall structure and simple operation, can complete the measurement work of the rheological properties of CO2 anhydrous fracturing fluid, and can directly measure rheological parameters of carbon dioxide anhydrous fracturing fluid by an experiment; and by setting different temperature and pressure conditions, and adding different types of thickeners with different concentrations, the visual CO2 anhydrous fracturing fluid rheological property test system disclosed by the invention measures the rheological properties of carbon dioxide anhydrous fracturing fluid within a relatively large range of temperature and pressure conditions. At the same time, the visual CO2 anhydrous fracturing fluid rheological property test system disclosed by the invention can accurately control the dosages of the thickener and carbon dioxide, and can observe the mixing situation of the two ingredients in a rotary rheometer in real time, and evaluate the solubility of the thickener in CO2 and the rheological properties of the CO2 anhydrous fracturing fluid by experiments.
Owner:HUANENG CLEAN ENERGY RES INST
Device for testing adhesion between asphalt and aggregate
InactiveCN102519836ASpeed up the peeling processIncreased flakingFlow propertiesTemperature controlWire gauze
The invention relates to a device for testing adhesion between asphalt and an aggregate, wherein a water tank is arranged on a base; a temperature control electric furnace positioned on the outside surface at the bottom of the water tank is arranged on the base; an asbestosed wire gauze is arranged between the temperature control electric furnace and the water tank; a wire gauze is arranged on the side wall at the upper part of the water tank; at least two sample cups filled with aggregate particles coated with asphalt are arranged on the wire gauze; a water pump communicated with the interior of the water tank is arranged on the base; rainwater is contained in the water tank; a water spraying pipe just above the water tank is arranged on a water outlet pipe of the water pump; spray heads communicated with the interior of the water spraying pipe are arranged on the lower surface of the water spraying pipe; the spray heads and the sample cups are same in number; and a fine line, the lower end of which is connected onto the aggregate particles coated with the asphalt, is arranged at the lower end of each spray head. The device disclosed by the invention overcomes the trouble for performing a parallel test for many times and can be used for at least manufacturing two aggregates under the same condition, so that the device has the advantages of reducing experimental error, ensuring experimental precision, saving time, increasing experimental efficiency and reducing experimental cost.
Owner:CHANGAN UNIV
Anti-coupling acoustic structure on refrigerator
InactiveCN105910376AIt has the function of gathering soundImprove directivityLighting and heating apparatusLoudspeaker casing supportsElectrostatic couplingEngineering
The invention discloses an anti-coupling acoustic structure on a refrigerator. The anti-coupling acoustic structure on the refrigerator comprises an installing panel used for being connected with a refrigerator door body or a refrigerator body, and an acoustic body; a plurality of through holes are formed in the installing panel; the acoustic body is arranged on the back face side of the installing panel; a gap exists between the acoustic body and the back face of the installing panel; and a surrounding and blocking part is arranged in the gap. According to the anti-coupling acoustic structure on the refrigerator, the acoustic body and the installing panel are arranged in a spaced manner, electrostatic coupling is not prone to happening when an electromagnetic compatibility experiment is performed on the refrigerator, the experiment precision can be guaranteed easily, meanwhile, it is avoided that the acoustic body and the installing panel resonate in the using process, and consequently the tone quality is affected, the surrounding and blocking part has the sound gathering effect, the directivity of sounds made by the acoustic body can also be improved, and a better listening effect is acquired.
Owner:HAIER SMART HOME CO LTD
Preparation device capable of purifying entangled state in any dimension and preparation method
ActiveCN111880351AGuaranteed experimental accuracyEasy to controlNon-linear opticsNonlinear optical crystalBeam splitter
The invention relates to a preparation device capable of purifying an entangled state in any dimension, and a preparation method, and in the device, light outputted by a laser isinputted to an A optical path and a B optical path through a nonlinear optical crystal; in the B light path, d-1 BDs are sequentially arranged along the light path, and finally d light branches are generated; in the lightpath A, the light passes through a first 66: 33 beam splitter and is divided into a reflection light path t and a transmission light path r, the light on the reflection light path t and the light on the transmission light path r are converged at a second 66: 33 beam splitter, and the output light of the second 66: 33 beam splitter sequentially passes through d-1 BDs to generate d light branches, so that a d-dimensional purifiable entangled state is prepared. The prepared purifiable entangled state is high in fidelity, the fidelity of the prepared two-dimensional purifiable entangled state is about 0.98, and the fidelity of the prepared three-dimensional purifiable entangled state is about 0.96.
Owner:SHANDONG UNIV
Airtight pulverizer and application thereof
ActiveCN104923352AAchieve airtightnessImprove experimental test accuracyGrain treatmentsMagnetic rotationCoupling
The invention discloses an airtight pulverizer and application thereof. The pulverizer comprises a sample smashing tank and a non-contact type torque transmission system. The non-contact type torque transmission system comprises a motor, a magnetic rotation shaft and a magnetic transmission coupler. The motor is connected with the magnetic rotation shaft and drives the magnetic rotation shaft to rotate through the magnetic transmission coupler. A shell is arranged outside the magnetic rotation shaft. The lower end of the magnetic rotation shaft extends out of the bottom of the shell and extends into the sample smashing tank. A stirring piece is arranged in the sample smashing tank. The magnetic rotation shaft is connected with the stirring piece and drives the stirring piece to act. The sample smashing tank is connected with the shell of the magnetic rotation shaft in a sealed mode. According to the pulverizer, through the magnetic transmission technology, the external torque transmission efficiency is kept, good sealing, enough power, high efficiency and good effects are achieved when a sample is smashed, operation is easy and convenient, and the airtight pulverizer is suitable for practical use. The gas content of a rock sample can be measured through the pulverizer.
Owner:CHINA UNIV OF GEOSCIENCES (BEIJING)
Support for blade testing and blade testing device comprising support
ActiveCN105179288AImprove test accuracyMeet efficiencyPump controlNon-positive displacement fluid enginesEngineeringTest fixture
The invention relates to a support for blade testing and a blade performance testing device comprising the support. The support for blade testing comprises a center shaft. The two ends of the center shaft are supported by end covers. The end covers are fixedly connected through supports. The support further comprises two fastening discs with which the center shaft is sleeved. Fixing rods penetrate the fastening discs to be fixed to the two end covers. Adjusting bolts clamp the fastening discs and are connected with supporting arms. Sliding grooves are formed in the supporting arms. Connecting rods are connected into the sliding grooves in an inserted manner. One end of each connecting rod is fixed through a nut, and the other end of each connecting rod is suspended. The support and the testing device have the beneficial effects that the testing device can effectively determine the reasons of the problems of motor efficiency and fan efficiency, the blade design capacity and developing efficiency are improved, and the design time is shortened; a support shaft system is rapid and accurate in centering, the structural wind resistance is small, the experimental precision is ensured, the universality is high, and the support is applicable to fans of various specifications.
Owner:SHANGHAI MALU RI YONG JEA GATE ELECTRIC +2
A large-capacity alkaline burette
InactiveCN106814159ASimple structureEfficient exclusionChemical analysis using titrationGlass ballBurette
The invention discloses a large-capacity alkaline burette, comprising a pipe body with a ruler, a titration head, a glass ball, a flexible rubber tube, a capacity ball, a communication pipe and a regulating valve. The capacity ball is connected to the pipe body through the communication tube, and the regulating valve installed on the connecting pipe. The large-capacity alkaline burette disclosed by the invention has a simple structure, and is convenient to add standard liquid into the burette through the set volume ball, which is convenient to operate, greatly improves the efficiency of the experiment, and reduces the operation difficulty of the alkaline burette.
Owner:宋利利
Sampling and thickness measuring device and method for wax deposits at different spatial positions in oil conveying pipeline
ActiveCN110108512APrecise and Efficient Sampling OperationWon't breakWithdrawing sample devicesMechanical thickness measurementsWaxEngineering
The invention relates to a sampling and thickness measuring device for wax deposits at different spatial positions in an oil conveying pipeline. The device comprises a fixed ring, a fixed bracket, a rotary bracket, a sampling device, and an illuminating device. The outer wall of the fixed ring is connected with one end of the fixed bracket; and the other end of the fixed bracket is connected withthe rotary bracket. One end of the sampling device is installed on the rotary bracket and the illuminating device is arranged at the other end of the sampling device. Therefore, sampling and thicknessmeasurement can be carried out on deposits at different spatial positions in a pipe; the sampling points are distributed widely and the operation precision is high; and movement in a radial directionand an axial direction can be checked precisely by the dividing ruler.
Owner:LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
Nuclear power plant vapor generator washing and sediment reaction device
InactiveCN106053290AAccurate and fast determinationGuarantee the accuracy of the experimentMaterial analysisWater dischargeHydrogen
The invention discloses a nuclear power plant vapor generator washing and sediment reaction device which comprises three main parts, namely, a reaction component, an acid gas absorption and water discharge component and a liquid collection and metering component. The parts are delicately designed and connected, the number of the components of the experiment device is minimized on premise of ensuring experiment accuracy and precision, the volume of generated hydrogen is detected by using a drainage method, and thus precise, rapid and convenient tests on the content of Fe in sediment of a nuclear power plant vapor generator can be achieved.
Owner:YANGJIANG NUCLEAR POWER +2
Special fixture for friction durability test of automobile touch screen
InactiveCN102279128AImprove general performanceSimple processStrength propertiesEngineeringScrew fixation
Owner:JILIN UNIV
Portable triaxial stress strain test device loaded by reaction force
ActiveCN110044686ATo achieve the purpose of applying axial pressureHigh sensitivityMaterial strength using tensile/compressive forcesAutomatic controlAxial pressure
The invention provides a portable triaxial stress strain test device loaded by a reaction force. The portable triaxial stress strain test device comprises an experimental device, a sensor group, a power loading device and a servo motor. The servo motor provides axial pressure and confining pressure loading power for experiments, and the single power source optimization design of the experimental device is realized. A linear displacement sensor, a confining pressure sensor and a stress sensor form a data acquisition unit, and a closed loop is formed by the data acquisition unit and the servo motor, so that the automatic control of an experimental path is realized. According to the portable triaxial stress strain test device loaded by the reaction force provided by the invention, the loadingof the axial pressure and the confining pressure can be realized by means of the reaction force action of internal structures of the experimental device, such as a reaction cross beam and a reactionpiston and the like, and the automatic control can be realized through the servo motor and the sensor group. The experimental device is highly integrated, easy to operate, economical and portable, andcan effectively solve the problem of difficult triaxial stress strain experiments of field soil samples.
Owner:HEFEI UNIV OF TECH
Temperature controllable type multifunctional animal spinal cord injury impactor
InactiveCN104720916AAvoid swingingGuaranteed effectAnimal fetteringSurgical veterinaryEngineeringFailure causes
The invention relates to a temperature controllable type multifunctional animal spinal cord injury impactor. The impactor comprises a fixer platform, wherein the fixer platform is provided with a size adjustable fixing collar and multiple sliding grooves, limb fixing rings are installed on the sliding grooves, a vertical rod with scale marks is detachably installed at one end of the fixer platform and located in front of the fixing collar, the vertical rod is sleeved with a connecting arm with scale marks, the connecting arm can rotate around the vertical rod while sliding up and down along the vertical rod, a hollow pipe is movably connected to the connecting arm and slides leftwards and rightwards along the connecting arm, a heating device provided with a temperature controller inside is installed on the bottom of the fixer platform, and a plug is connected to the heating device. By the adoption of the impactor, experiment failures caused by evasion of animals are effectively avoided, and experiment efficiency and experiment precision are guaranteed. The impactor is simple in structure, easy to operate and worth application and popularization.
Owner:SHAOXING UNIVERSITY
Application method of water injection well whole shaft tubular column dissolved oxygen corrosion simulation device
ActiveCN113669049AGood repeatabilityReduce the number of experimentsSurveyWater aerationCorrosion reactionOxygen monitoring
The invention provides an application method of a water injection well whole shaft tubular column dissolved oxygen corrosion simulation device. The water injection well whole shaft tubular column dissolved oxygen corrosion simulation device comprises a liquid storage vertical pipe (13), an air injection system, a nitrogen pressurization system, an electric heating system, an aeration circulation system, a dissolved oxygen monitoring system, a corrosion reaction circulation system and an experiment auxiliary control system. According to the corrosion evaluation method, the function relation between the well depth and the experiment time in the water injection process is established, the water injection well whole shaft tubular column dissolved oxygen corrosion rate is calculated through one-time experiment data in combination with the corrosion electrochemical theory, the experiment frequency is greatly reduced, and the experiment time and the experiment cost are remarkably reduced.
Owner:CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
Plane cascade experimental device capable of independently adjusting mounting angle
ActiveCN112985743ALow costShorten experiment timeGas-turbine engine testingAerodynamic testingEngineeringClockwise
The invention provides a plane cascade experiment device capable of independently adjusting a mounting angle. The plane cascade experiment device comprises an upper grid plate, a lower grid plate, a first spacing column, a second spacing column, blades, an upper rotating disc, an upper pressing plate, a lower rotating disc and a lower pressing plate. An operation tool acts on the operation hole to enable the upper rotating disc to rotate clockwise or anticlockwise, when the upper rotating disc rotates, the upper pressing plate is driven to rotate synchronously through the first screw and the second screw, and when the upper rotating disc rotates to a required angle, the first screw and the second screw are screwed down, so that the position of the upper rotating disc is fixed. The independent adjustment of the mounting angle of each blade can be independently realized through the independent mounting angle adjusting unit, so that the cost is effectively saved; the pressing plate, the rotating disc and the grid plate which are specially designed are adopted, on one hand, the blade angle can be flexibly adjusted in the clockwise or anticlockwise direction; and on the other hand, the position of the turntable is fixed firmly and cannot deflect in the wind tunnel experiment process, so that the wind tunnel experiment precision is ensured.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Solid particulate matter collection device
The invention discloses a solid particulate matter collection device comprising a first part 1, a second part 2 and a fastening part 3, wherein the first part 1 and the second part 2 are parts with penetrating insides along an axial direction; the fastening part 3 is a hollow part with both ends opened and is sleeved at the outer sides of the first part 1 and the second part 2; an annular fixed frame 32 of the fastening part 3 contacts with the edge 21 of the second part 2; screw threads positioned at the inner side of the fastening part 3 are meshed and screwed with screw threads positioned at the outer side of the first part 1; and the first part 1 is connected with the second part 2. Because the parts are locked and connected through the screw threads, the first part 1 and the second part 2 can be locked or loosened by only rotating the fastening part 3 without needing tools, i.e. a spanner and the like, when a device is disassembled, therefore filter papers can be very conveniently taken out and replaced.
Owner:BEIJING SDL TECH
Device for simulating dissolved oxygen corrosion of whole wellbore pipe column of water injection well
ActiveCN113686765AGood repeatabilityReduce the number of experimentsWeather/light/corrosion resistanceCorrosion reactionOxygen monitoring
The invention provides an evaluation device for simulating dissolved oxygen corrosion of a whole wellbore pipe column of a water injection well. The evaluation device comprises a liquid storage vertical pipe, an air injection system, a nitrogen pressurization system, an electric heating system, an aeration circulation system, a dissolved oxygen monitoring system, a corrosion reaction circulation system and an experiment auxiliary control system. According to the corrosion evaluation method, the function relation between the well depth and the experiment time in the water injection process is established, the water injection well whole shaft tubular column dissolved oxygen corrosion rate is calculated through one-time experiment data in combination with the corrosion electrochemical theory, the experiment frequency is greatly reduced, and the experiment time and the experiment cost are remarkably reduced.
Owner:CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
Carrying task labor intensity load measurement experiment system and method
ActiveCN107806899AEnsure experiment safetyReduce experimental errorMeasurement devicesExperimental systemEngineering
The invention discloses a carrying task labor intensity load measurement experiment system and method. The system is formed by two adjustable placing benches, variable-weight carrying boxes and carrying information acquisition devices. The adjustable placing benches and the variable-weight carrying boxes are used for simulating carrying tasks under various work conditions; and the carrying information acquisition devices are used for synchronously collecting and simulating carrying frequency and carrying height in the carrying task process. The device can carry out unified planning and collection on key elements, such as carrying height, carrying frequency and carrying weight, for calculation of labor intensity under a specific carrying task, thereby reducing experiment errors and facilitating carrying out the experiment. The system and method can calculate the amount of heat produced by a human body in unit time, and determine labor intensity load of an actual carrying task based on design of carrying distance, carrying weight and carrying time and according to the collected carrying frequency.
Owner:XI AN JIAOTONG UNIV +1
Door and window physical performance testing equipment
ActiveCN108489674BAvoid offsetReduce minor deviationsFluid-tightness measurement using fluid/vacuumPhysical performance testingElectric machinery
The invention discloses a door and window physical property detection device, solving the problem that the locking process of a piece to be detected needs consuming a lot of time. The door and windowphysical property detection device is characterized in that the door and window physical property detection device includes a box with an installation cavity, a splitter plate set which is connected to the box in a sliding manner and is located in the installation cavity, and a plurality of locking levers which are connected to the box in a sliding manner and are located at the front of the opening of the installation cavity, wherein the locking levers include a plurality of sliding rods which are coordinated with a guide rail, and fasteners which penetrate through the sliding rods; positioning columns limiting the fasteners are rotatably arranged on the sliding rods; a positioning gear which rotates in situ relative to each positioning column sleeves the end portion of the each positioning column, and the positioning gear includes a second connection unit which rotates with a first connection unit synchronously and is in threaded connection with the corresponding fastener; and a driving motor is also fixedly arranged on the box; the driving motor is fixedly provided with an driving gear so as to drive a driven gear to rotate synchronously to quickly compact the piece to be detected and the box, thus reducing the time on the locking process for detection, improving leakproofness of the detection cavity and guaranteeing accuracy of the detection data.
Owner:宁波和邦检测研究有限公司
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