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32results about How to "Check reliability" patented technology
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Analog device of alimentary system
InactiveCN101000723AControl run timeRealize the function of simulating the digestive tractEducational modelsIntestinal structureLarge intestine
A simulation device of alimentary canal consists of simulated oral cavity, simulated oesophagus, simulated stomach, simulated small intestine, simulated big intestine, simulated anus and its switch, motor actuators set separately in said simulated organs, acid liquor storage chamber, buffer liquor storage chamber, digestive enzyme storage chamber, alkali liquor storage chamber, flow rate controllers set separately in said chambers, transducers of pH value and pressure as well as enzyme. It is featured as using central control unit to control said actuators and to set various parameters of complete alimentary canal.
Owner:重庆工学院
System and method for detecting and verifying monitoring device of insulator polluted current
InactiveCN103245927ACalibration Current AccuracyAssessment stabilityElectrical measurementsTransducerPolluted environment
The invention belongs to the field of intelligent electric apparatus, particularly relates to a system and method for detecting and verifying a monitoring device of insulator polluted current. The invention provides the system and method for detecting and verifying the monitoring device of the insulator polluted current. The method comprises the following steps: a to-be-detected device is subjected to the current calibration in a standard laboratory environment through a calibration system of the to-be-detected device; a polluted environment is simulated through an analog system of an experiment environment; and polluted current curves of the to-be-detected device and a standard polluted current measuring transducer are compared to further judge whether the to-be-detected device can actually reflect the practical situation of the polluted current or not. According to the invention, the detection and verification for the monitoring device of the insulator polluted current can be realized; and meanwhile, the stability of the monitoring device of the insulator polluted current can be assessed through simulating the polluted environment for a long time.
Owner:CHINA ELECTRIC POWER RES INST
Preparation method and application of pressure-sensitive temporary bonding glue
ActiveCN104130727ALow costCheck reliabilitySemiconductor/solid-state device manufacturingMacromolecular adhesive additivesBonding processDirect observation
The invention relates to preparation method and application of pressure-sensitive temporary bonding glue and belongs to the technical field of microelectronic packaging. A slide glass wafer and a device wafer are bonded in a temporary mode by adopting the pressure-sensitive temporary bonding glue, and microcapsules are broken by utilizing temporary bonding pressure, so that color of the peripheral space changes. If a certain area is hollow, the microcapsules in the area are not broken, the color of the peripheral space does not change, and the aim of directly observing the temporary bonding quality after bonding removal is achieved. According to the method, a low-cost temporary bonding process can be greatly realized, and the reliability of the temporary bonding process is rapidly checked.
Owner:NAT CENT FOR ADVANCED PACKAGING
Experimental device for ground expansion of rocket-borne electronic extensible rod
The invention provides an experimental device for ground expansion of a rocket-borne electronic extensible rod. The device is used for simulating control of expansion of the electronic extensible rod in the separation of a hood of a sounding rocket on the ground. The device comprises a base with a sliding way, an extension spring, a screw, an electromagnet, a circular ring, a cylindrical pin and electrical pure iron, wherein the base is fixed on a rotary platform; a screw hole seat and a pin hole seat are arranged at left and right ends of the base in opposite direction; the lower part of thescrew hole seat is fixed with one end of the extension spring; a threaded hole for mounting the screw is formed on the upper part of the screw hole seat; the electromagnet is embedded into the lower part of the pin hole seat; the upper part of the pin hole seat is a limiting part; a pair of small holes is formed on the limiting part correspondingly; the circular ring is placed between the pair ofsmall holes and fixed by inserting the cylindrical pin; the electrical pure iron is shaped like a Chinese character 'Tu'; a circular hole through which the cylindrical pin penetrates is processed on the upper half part of the electrical pure iron; the lower half part of the electrical pure iron is used for fixing the other end of the extension spring; and the bottom of the electrical pure iron isnested in the sliding way on the base.
Owner:NAT SPACE SCI CENT CAS
Arrow-loaded electric field stretching rod ground unfolding experimental device
ActiveCN103162581ACheck lock functionCheck reliabilitySelf-propelled projectilesElectric fieldMicrogravity Simulation
The invention provides an arrow-loaded electric field stretching rod ground unfolding experimental device. The arrow-loaded electric field stretching rod ground unfolding experimental device comprises a rotating platform and a clamping releasing mechanism and is characterized by further comprising a microgravity simulation mechanism. The microgravity simulation mechanism further comprises a central pillar, steel wire ropes, a nylon rope and clamping hoops which are fixed on each section of an electric field stretching rod, wherein one end of each steel wire rope is pulled in a slant mode to be fixed on the central pillar, and the other end of each steel wire rope is connected with the clamping hoop of each section of the electric field stretching rod. One end of the nylon rope is connected with the clamping releasing mechanism, and the other end of the nylon rope is fixed on a pressing plate on the top of the electric field stretching rod. The central pillar comprises a plurality of sections of hollow cylinders, wherein flanges are arranged at two ends of each hollow cylinder. Every two sections of the cylinders are fixedly connected through a bolt, and each flange of each section of the cylinder is provided with a cylinder hole used for connecting one steel wire rope. One end of each steel wire rope is pulled in the slant mode to be fixed on the central pillar, and the other end of each steel wire rope is connected with the clamping hoop of each section of the stretching rod of the electric field stretching rod.
Owner:NAT SPACE SCI CENT CAS
Deep thermal shock testing device of heavy-duty engine
ActiveCN104266840AImprove test efficiencyCheck reliabilityEngine testingExpansion tankThermal expansion
The invention relates to a deep thermal shock testing device of a heavy-duty engine. The deep thermal shock testing device comprises the engine, and is characterized in that a water outlet of the engine is connected with a third port of a second switching valve, a second port of the second switching valve is connected with a hot water tank, a first port of the second switching valve is connected with a cold water tank and a cold expansion water tank, and the cold expansion water tank is connected with a thermal expansion water tank which is connected with the second port of the second switching valve; a water inlet of the engine is connected with a third port of a first switching valve, a second port of the first switching valve is connected with a hot water tank, a first port of the first switching valve is connected with a third port of a three-way proportional valve, a first port of the three-way proportional valve is connected with the cold water tank, and a second port of the three-way proportional valve is connected with the first port of the second switching valve; the hot water tank is connected with a hot water heat exchanger and a steam heat exchanger, and the cold water tank is connected with a refrigerating unit. The deep thermal shock testing device can improve the number of alternations of unit time, and verify reliability of the engine within a short time.
Owner:CHINA FIRST AUTOMOBILE +1
Wind-induced internal pressure testing method oriented to punched flexible building
ActiveCN108427825ASolve the problem of experimental test errorAccurately measure the pulsation responseGeometric CADDesign optimisation/simulationInternal pressureResonance
The invention belongs to the field of the wind resistance of an engineering structure, and particularly relates to a wind-induced internal pressure testing method oriented to a punched flexible building. The invention provides the wind-induced internal pressure testing method oriented to the punched flexible building. A building model is subjected to internal volume correction, a regulation deviceis reasonably selected, so that the problem of experiment test errors brought by the reduced scale effect of the punched flexible building model is solved, an internal pressure resonance frequency test deviation caused by model reduced scale is reduced, the test distortion of internal pressure response is lowered, the reliability of a model experiment result is improved, the pulse response of aninternal wind load after the flexible building is punched can be accurately measured, and a dereferencing basis is provided for engineering wind-resistant design.
Owner:ZHEJIANG UNIV
Device for testing start/stop service life of turbocharger
ActiveCN106596084ACheck reliabilitySimple structureMachine part testingCombustion chamberTurbocharger
The invention relates to a device for testing the start / stop service life of a turbocharger, especially relates to a gas-storage type device for testing the start / stop service life of the turbocharger and belongs to the technical field of power machines. The device comprises an air tank, an air pump, a combustion chamber and corresponding pipe adjusting valves. The device employs a self-circulation operation mode. In multiple start / stop circulation tests, the device employs the air stored in a last self-circulation operation process for start again. The device is scientific and reasonable in test bench scheme, is easy to implement, is stable and reliable, and is high in value for the improvement of the reliability of a turbocharger.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Healthy life style guidance system and method based on multivariate information fusion
ActiveCN110504034AAccurately match the actual situationCheck reliabilityHealth-index calculationMedical practises/guidelinesGuidance systemComputer science
The invention relates to a healthy life style guidance system and method based on multivariate information fusion. The guidance system at least comprises a cloud processor, at least one terminal and acloud storage medium. The terminal provides an expected result for health assessment and / or treatment assessment of a corresponding user to the cloud processor, so that the cloud processor can selectcorresponding multiple types of historical guidance sample libraries based on the fused multivariate user data of the user and can generate a first result and a second result based on the fused multivariate user data; the cloud processor responds to the selection of the user for the first result or the second result and screens out a first primary class historical guidance sample library of one of the multiple classes of historical guidance sample libraries, and provides a plurality of selectable initial guidance schemes in the selected first primary class historical guidance sample library to the terminal according to the fused multivariate user data of the user and by referring to the selection of the first result or the second result.
Owner:CAPITAL UNIVERSITY OF MEDICAL SCIENCES
Battery system for measuring battery module voltages
InactiveCN103270642ACheck reliabilityAvoid subsequent lossesSub-station arrangementsSecondary cellsComputer moduleBattery system
The invention proposes a battery system (100) having at least one module (24) which comprises a large number of battery cells (10), wherein each module (24) has an associated cell voltage detection unit (26) which is connected to an evaluation unit (38) by means of a communications bus (36). The invention makes provision for each module (24) to additionally comprise a module voltage detection circuit (41) which is connected to the evaluation unit (38). The invention also relates to a method for monitoring a battery system having at least one module comprising a large number of battery cells, wherein a voltage of each of the battery cells is detected and supplied to an evaluation unit by means of a cell voltage detection unit, wherein, in addition, a module voltage is separately detected and supplied to the evaluation unit. The invention also provides a motor vehicle having a battery system (100), wherein the battery system (100) is connected to a drive system of the motor vehicle.
Owner:ROBERT BOSCH GMBH +1
Test bed for turbocharger startup and shutdown impact tests
InactiveCN105043754ACheck reliabilitySimple structureMachine part testingCombustion chamberTurbocharger
The invention relates to a test bed for turbocharger startup and shutdown impact tests and belongs to the power machinery technical field. The test bed includes an outer air source air intake pipeline, a combustion chamber, a combustion chamber outlet pipe, a high-temperature conversion valve, a first branch and a second branch; two sets of turbochargers in the two branches are exactly the same; and an external air source is adopted to supply air. The invention also discloses a turbocharger startup and shutdown impact test method which can provide basis for turbocharger startup and shutdown impact reliability. The test bed provided by the invention has the advantages of being scientific, reasonable, stable and reliable as well as easiness in implementation, and has an important application value in improving the reliability of the turbochargers.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
CT indirect secondary through-flow method for generator set
PendingCN111707981AAccurate measurementCheck reliabilityBase element modificationsMeasurement instrument housingTester deviceSecondary loop
The invention discloses a CT indirect secondary through-flow method for a generator set. The method comprises the following steps: (1), carrying out preparing for inspection work before a unit CT secondary loop through-flow test; turning on a power supply of a relay protection tester device after all early-stage work preparation is completed; adjusting the output rated current value to be 50 percent of the rated current value; recording and collecting current values of all equipment connected with the group of CT secondary circuits; checking whether the error between the secondary current display value and the measured value of each piece of equipment and the 50% of the rated current added by the relay protection tester is within an allowable range or not; adjusting the relay protection tester to enable the output value of the relay protection tester to reach a rated value, recording and collecting all equipment current values of the group of CT secondary circuits, judging whether an error between the measured CT secondary rated current value and the added CT secondary rated current value is within an allowable range or not, and ending the CT secondary through-flow experiment. Therefore, the time and labor are saved; meanwhile, the situation that a tester is exposed in a complex field environment for a long time is avoided, and work safety is improved.
Owner:XIAN THERMAL POWER RES INST CO LTD
Time-controlled intermittent life test method based on junction temperature real-time correction
ActiveCN111487513ACheck reliabilityCheck complianceSemiconductor operation lifetime testingThermodynamicsJunction temperature
A time-controlled intermittent life test method based on junction temperature real-time correction comprises the following steps that a sample is selected for a pre-test, temperature rise time of a junction temperature variable quantity, meeting a test requirement, of a specific device under driving power is determined, and the time when the junction temperature is reduced to an initial temperature is recorded; the temperature rise time measured by the pre-test is used as a temperature rise period of a cycle period, constant driving power is continuously applied in the temperature rise period,after the temperature rise period is finished, narrow pulse excitation is used for measuring an end point junction temperature of the device, and the temperature drop time measured by the pre-test isused as the temperature drop period for cooling the device; and after the temperature drop period is finished, if the junction temperature does not reach the initial temperature, a secondary temperature drop period is continued, wherein the next cycle period is equal to the sum of the time of the temperature drop period and the time of the secondary temperature drop period of the previous cycle period. In the invention, an intermittent working state of a component can be simulated more strictly, and an intermittent life test requirement can be met more accurately.
Owner:西安太乙电子有限公司
Device for measuring thermal resistance of semiconductor device bottom case to air under thermal coupling effect
ActiveCN104048992BEasy and accurate measurementAccurate Thermal Resistance ParametersMaterial heat developmentLiquid-crystal displayHeat sink
The invention discloses a thermal resistance measuring device from the bottom case of a semiconductor device to air under the thermal coupling effect, comprising a plurality of temperature measuring devices for respectively collecting the temperature of the bottom case of the semiconductor device; Measure the semiconductor device and radiator; a control circuit board, used to drive the semiconductor device, and receive the collected temperature of the bottom case of the semiconductor device and calculate the self thermal resistance and coupling thermal resistance; a liquid crystal display, used to display the bottom of the semiconductor device Shell temperature and calculated self-thermal resistance and coupling thermal resistance; a power supply device for providing power consumption to the semiconductor device and the temperature measurement device, control circuit board, and liquid crystal display. The thermal resistance measuring device can conveniently and accurately measure the self thermal resistance and coupling thermal resistance from the bottom case of the semiconductor device to the air under the thermal coupling effect.
Owner:中国东方电气集团有限公司
A turbocharger start-stop impact test bench
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
A kind of preparation method of pressure-sensitive temporary bonding glue and application thereof
ActiveCN104130727BLow costCheck reliabilitySemiconductor/solid-state device manufacturingMacromolecular adhesive additivesBonding processEngineering
Owner:NAT CENT FOR ADVANCED PACKAGING
A time-controlled intermittent life test method with real-time correction according to junction temperature
ActiveCN111487513BCheck reliabilityCheck complianceSemiconductor operation lifetime testingThermodynamicsHeating time
A time-controlled intermittent life test method based on real-time correction of junction temperature, comprising the following steps: selecting samples for pre-testing, determining the heating time of a specific device under driving power to reach the junction temperature variation required by the test, and recording the junction temperature drop to The time of initial temperature; the heating time determined by the pre-test is used as the heating period of the cycle period, and a constant driving power is continuously applied during the heating period. The time is used as a cooling cycle to cool down the device. After the cooling cycle ends, if the junction temperature does not reach the initial temperature, the second cooling cycle is continued; the next cycle is equal to the sum of the cooling cycle and the second cooling cycle time of the previous cycle. The invention can more strictly simulate the intermittent working state of the components, and more accurately meet the requirements of the intermittent life test.
Owner:西安太乙电子有限公司
Analog device of alimentary system
InactiveCN100507975CControl run timeRealize the function of simulating the digestive tractEducational modelsLarge intestineAmplitude control
The invention provides a digestive tract system simulation device, which includes a simulated oral cavity, a simulated esophagus, a simulated stomach, a simulated small intestine, a simulated large intestine, and a simulated anus and switches thereof; There are acid storage chambers, buffer storage chambers, digestive enzyme storage chambers, lye storage chambers and their flow controllers, as well as sensors for pH, pressure and enzymes; the central control unit is used to set the overall parameters of the simulated digestive tract , receive the detection results fed back by the sensor, adjust the flow controller, analog switch, electric control driver action range and action duration, etc., and save various parameters in the data storage unit, and output through the data output interface. The invention can simulate the peristaltic action of the digestive tract, and can achieve the purpose of controlling the running time of the simulated digestive tract through the control of the action range and action time. It has the advantages of simple system structure, long working time, many simulation parameters and comprehensive functions.
Owner:重庆工学院
Turbocharger startup and shutdown impact test device
InactiveCN105043779ACheck reliabilitySimple structureInternal-combustion engine testingCombustion chamberTurbocharger
The invention relates to a turbocharger startup and shutdown impact test device and belongs to the power machinery technical field. The turbocharger startup and shutdown impact test device includes an air source air intake pipeline, an air changeover valve, a first branch and a second branch; two sets of turbochargers and combustion chambers in the two branches are exactly the same; and an external air source is adopted to supply air. The invention also discloses a turbocharger startup and shutdown impact test method which can provide basis for turbocharger startup and shutdown impact reliability. The test bed provided by the invention has the advantages of being scientific, reasonable, stable and reliable as well as easiness in implementation, and has an important application value in improving the reliability of the turbochargers.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Vibration test system and test method for full missile vibration in rotating state of rotating missile
PendingCN114739611ACheck reliabilityAssessment adaptabilitySubsonic/sonic/ultrasonic wave measurementSustainable transportationClassical mechanicsLaser sensor
The invention provides a vibration test system and test method for full-missile vibration in a rotating state of a rotating missile, and relates to the technical field of missile mechanical environment tests, the vibration test system comprises a vibration device, a fixing device and a rotating device, the fixing device fixes the rotating missile on the vibration device, and the tail end of the rotating missile is connected with the rotating device; the rotating missile achieves application of vibration excitation through the vibration device, achieves balance of missile gravity through the fixing device and achieves application of rotating motion through the rotating device. According to the invention, the vibration dynamics environment experienced by the rotating missile in the flight process can be simulated more truly, and the reliability and vibration environment adaptability of the rotating missile can be fully examined. A non-contact laser sensor is adopted, measurement and control of vibration of the whole missile in the rotating state of the missile are achieved, and the problem that a traditional sensor cannot measure vibration under rotating motion is solved.
Owner:SHANGHAI SPACE PRECISION MACHINERY RES INST
An experimental device for launching an arrow-borne electric field rod on the ground
ActiveCN103162581BCheck lock functionCheck reliabilitySelf-propelled projectilesMicrogravity SimulationEngineering
The invention provides an arrow-loaded electric field stretching rod ground unfolding experimental device. The arrow-loaded electric field stretching rod ground unfolding experimental device comprises a rotating platform and a clamping releasing mechanism and is characterized by further comprising a microgravity simulation mechanism. The microgravity simulation mechanism further comprises a central pillar, steel wire ropes, a nylon rope and clamping hoops which are fixed on each section of an electric field stretching rod, wherein one end of each steel wire rope is pulled in a slant mode to be fixed on the central pillar, and the other end of each steel wire rope is connected with the clamping hoop of each section of the electric field stretching rod. One end of the nylon rope is connected with the clamping releasing mechanism, and the other end of the nylon rope is fixed on a pressing plate on the top of the electric field stretching rod. The central pillar comprises a plurality of sections of hollow cylinders, wherein flanges are arranged at two ends of each hollow cylinder. Every two sections of the cylinders are fixedly connected through a bolt, and each flange of each section of the cylinder is provided with a cylinder hole used for connecting one steel wire rope. One end of each steel wire rope is pulled in the slant mode to be fixed on the central pillar, and the other end of each steel wire rope is connected with the clamping hoop of each section of the stretching rod of the electric field stretching rod.
Owner:NAT SPACE SCI CENT CAS
Falling type impact test bench
The invention discloses a falling type impact test bench. The falling type impact test bench comprises a rack, an impact platform, a falling table, a release mechanism and a lifting mechanism, the bottom end of the rack is fixedly installed on a base, the impact platform is located in the center of the base, the falling table corresponds to the impact platform up and down, the two ends of the falling table are located in first guide rails (namely falling table guide rails) on the rack, and a to-be-detected component is fixed to the falling table; the tail end of the lifting mechanism is connected with the release mechanism, and the release mechanism is used for fixing and being connected with the falling table in an initial state; in the impact process, the release mechanism is used for releasing the falling table; and a control center is used for controlling the working states of the lifting mechanism and the releasing mechanism. The falling type impact test bench is specially designed for a forklift electrical component, and can accurately obtain dynamic mechanical parameters such as impact acceleration and strain from a test, so that the impact resistance of the forklift electrical component is clearly reflected, and the function reliability and the structure integrity of the forklift electrical component are checked.
Owner:中机科(北京)车辆检测工程研究院有限公司 +1
Electronic intelligent equipment detection system
InactiveCN111351999AFacilitate the implementation of automated test systemsImprove test efficiencyEnvironmental/reliability testsElectrical connectionPower detector
The invention discloses an electronic intelligent equipment detection system. The invention belongs to the technical field of power detection, and the system comprises electric equipment; an adjustable power supply which is used for supplying power to electric equipment; an environmental condition regulation and control box which is used for providing adjustable and controllable environmental conditions for electric equipment; electric meter equipment which is used for detecting the electricity consumption of the electric equipment; a power detector A which is used for detecting the input endof a to-be-detected module of electric equipment; a power detector B which is used for detecting the output end of the to-be-detected module of the electric equipment; a controller which is connectedwith the adjustable power supply, the electric meter equipment, the environmental condition regulation and control box, the power detector A and the power detector B; and a control terminal which iselectrically connected with the controller. The system is suitable for detecting the safety, the energy saving performance and the reliability of various different types of electronic appliances, is good in universality, can promote the realization of an automatic test system, greatly improves the test efficiency, facilitates the unification of test standards, and scientifically, simply, conveniently and effectively evaluates and diagnoses the performance of an electric appliance system.
Owner:SHENZHEN BST TESTING
A turbocharger start-stop life test device
The invention relates to a device for testing the start / stop service life of a turbocharger, especially relates to a gas-storage type device for testing the start / stop service life of the turbocharger and belongs to the technical field of power machines. The device comprises an air tank, an air pump, a combustion chamber and corresponding pipe adjusting valves. The device employs a self-circulation operation mode. In multiple start / stop circulation tests, the device employs the air stored in a last self-circulation operation process for start again. The device is scientific and reasonable in test bench scheme, is easy to implement, is stable and reliable, and is high in value for the improvement of the reliability of a turbocharger.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
A device for start-stop impact test of turbocharger
InactiveCN105203330BCheck reliabilityReduce testing costsInternal-combustion engine testingCombustion chamberTurbocharger
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
A wind-induced internal pressure test method for flexible buildings with openings
ActiveCN108427825BSolve the problem of experimental test errorAccurately measure the pulsation responseGeometric CADDesign optimisation/simulationEngineeringEngineering structures
The invention belongs to the field of the wind resistance of an engineering structure, and particularly relates to a wind-induced internal pressure testing method oriented to a punched flexible building. The invention provides the wind-induced internal pressure testing method oriented to the punched flexible building. A building model is subjected to internal volume correction, a regulation deviceis reasonably selected, so that the problem of experiment test errors brought by the reduced scale effect of the punched flexible building model is solved, an internal pressure resonance frequency test deviation caused by model reduced scale is reduced, the test distortion of internal pressure response is lowered, the reliability of a model experiment result is improved, the pulse response of aninternal wind load after the flexible building is punched can be accurately measured, and a dereferencing basis is provided for engineering wind-resistant design.
Owner:ZHEJIANG UNIV
Inspection tool used on basis of spatial layout
The invention discloses an inspection tool used on the basis of spatial layout, and the inspection tool used on the basis of spatial layout comprises a control end test bed, a mounting plate is arranged on the test bed, a rotatable gear is arranged on the mounting plate, a rocking handle is connected to the gear, a rack meshed with the gear is arranged on one side of the gear, one end of the rack is connected with a push-pull force sensor, the far free end of the push-pull force sensor is connected with a pull rod, the free end of the pull rod is provided with a fixing frame, one side of the upper end of the fixing frame is provided with a mounting frame for mounting a handle cover, the handle cover is connected with a handle sleeve, and a handle is arranged between the handle cover and the handle sleeve; a rotating force detection mechanism is arranged on the side wall of one side, away from the handle, of the handle sleeve, fixing pieces with the arrangement mode consistent with that on the simulator are arranged on the fixing frame, one end of a steel rope is connected to the handle, the other end of the steel rope is connected to the fixing piece away from one end of the test bed, and one end, away from the handle sleeve, of the rotating force detection mechanism is connected with a pull rod; and the tool can measure the push-pull force and the rotating force of the steel cable on the tool.
Owner:贵州新安航空机械有限责任公司
Experimental device for ground expansion of rocket-borne electronic extensible rod
The invention provides an experimental device for ground expansion of a rocket-borne electronic extensible rod. The device is used for simulating control of expansion of the electronic extensible rod in the separation of a hood of a sounding rocket on the ground. The device comprises a base with a sliding way, an extension spring, a screw, an electromagnet, a circular ring, a cylindrical pin and electrical pure iron, wherein the base is fixed on a rotary platform; a screw hole seat and a pin hole seat are arranged at left and right ends of the base in opposite direction; the lower part of the screw hole seat is fixed with one end of the extension spring; a threaded hole for mounting the screw is formed on the upper part of the screw hole seat; the electromagnet is embedded into the lower part of the pin hole seat; the upper part of the pin hole seat is a limiting part; a pair of small holes is formed on the limiting part correspondingly; the circular ring is placed between the pair of small holes and fixed by inserting the cylindrical pin; the electrical pure iron is shaped like a Chinese character 'Tu'; a circular hole through which the cylindrical pin penetrates is processed on the upper half part of the electrical pure iron; the lower half part of the electrical pure iron is used for fixing the other end of the extension spring; and the bottom of the electrical pure iron is nested in the sliding way on the base.
Owner:NAT SPACE SCI CENT CAS
Heavy-duty engine deep thermal shock test device
ActiveCN104266840BImprove test efficiencyCheck reliabilityEngine testingExpansion tankPlate heat exchanger
Owner:CHINA FIRST AUTOMOBILE +1
Vibration test device in liquid nitrogen temperature zone of cryogenic pressure accumulator for launch vehicle
ActiveCN103674458BSolve Exhaust ProblemsGuaranteed temperatureVibration testingGas cylinderEngineering
A liquid nitrogen temperature zone vibration test device of a low temperature pressure accumulator for carrier rocket includes a supply air pressurization system, an air cushion pressure control system, and a vibration environment system. The vibration environment system comprises a vibration table and a vibration tooling; the low pressure accumulator is installed on the vibration table through the vibration tooling; at a beginning of a test, a liquid nitrogen is poured into a shell of the low temperature pressure accumulator; the supply air pressurization system injects helium into a diaphragm capsule of the low temperature pressure accumulator, so that a pressure in the diaphragm capsule is consistent with an actual working pressure of the diaphragm capsule; the air cushion pressure control system is internally provided with a gas cylinder; the gas cylinder is communicated with an inner cavity of the shell of the low temperature pressure accumulator; the supply air pressurization system fills the gas cylinder with the nitrogen, and fills the shell of the low temperature pressure accumulator with a gas-liquid mixed lower temperature nitrogen, so that the pressure in the gas cylinder is consistent with the pressure in the shell of the low temperature pressure accumulator; and in a vibration test, the air cushion pressure control system controls to maintains pressure stability in the shell of the low temperature pressure accumulator.
Owner:BEIJING INST OF ASTRONAUTICAL SYST ENG +1
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