56 results about "Proof test" patented technology

The invention discloses a rapid calibration method and system for automatic testing equipment of a vehicle machine, and relates to the technical field of automatic calibration, and the method comprises the steps: inputting a preset standard calibration signal to the testing equipment, and collecting the response data of each testing channel of the equipment as calibration reference data; comparing the calibration reference data with a built-in standard reference value of the equipment, and calculating deviation data of each test channel; based on the deviation data, calibration parameters of each channel are calculated, and the calibration parameters comprise a gain compensation coefficient, a frequency compensation coefficient and a phase compensation coefficient; the calibration parameters are loaded to the corresponding channels of the test equipment, a preset standard calibration signal is input for verification test, and when errors of the channels are smaller than a preset residual error threshold value, calibration is completed, and the calibration parameters are stored. By establishing the gain-frequency-phase joint compensation model and combining the parallelization verification and increment optimization algorithm, the high-precision rapid calibration of the automatic test equipment of the vehicle machine is realized.

The invention relates to the technical field of capacitors, in particular to an explosion-proof test method for a power capacitor. Injecting a multi-band harmonic current sequence into the composite stress field, capturing three-dimensional strain propagation characteristics of the capacitor shell in real time, and establishing a strain-discharge space-time correlation model according to the three-dimensional strain propagation characteristics; a capacitor shell structure integrity attenuation curve is obtained according to the strain-discharge time-space correlation model, and when the slope of the attenuation curve breaks through a preset critical topological form, a multi-stage linkage protection device is triggered to implement energy discharge; and extracting a plasma spectrum fingerprint formed by the self-healing characteristic of the metallized film in the energy discharge process, and reversely reconstructing an explosion-proof performance grade evaluation system of the capacitor through the offset of a characteristic spectral line. The full-process closed-loop test of the capacitor from stress loading, failure early warning to performance evaluation is realized, and the environment simulation authenticity, the failure early warning accuracy and the performance evaluation scientificity of the explosion-proof test are improved.

The utility model belongs to the field of explosion-proof test boxes, and particularly relates to a test box for explosion-proof tests, which comprises a support, a first rotating seat is fixedly connected to the top of the support, a rotating frame is rotatably connected to one side of the first rotating seat, and a test box body is fixedly connected to the top of the rotating frame. A pretreatment mechanism is arranged at the top of the test box body, and a protection mechanism is arranged on one side of the test box body; the test box body and the protection mechanism are rotatably connected to the top of the support through cooperation of the rotating frame and the first rotating seat, the rotating frame can drive the protection mechanism to turn over, so that the box door of the test box body is far away from people, and test articles in the test box body fall into the processing box; then water in the water tank is pumped by a water pump, and cooling water is sprayed into the treatment box through a liquid collecting pipe and a spraying pipe, so that the test articles in the treatment box are further cooled.

The application discloses a kind of multi-stage linkage explosion venting test methods combined with powdery combustion inhibitor, it is related to explosion-proof engineering and safety detection technical field;The method is by constructing with explosion venting device, ignition system, powdery inhibitor delivery system and pressure and optical sensor test cabin, uses PLC to realize ignition, pre-delivery, pressure relief trigger, synchronous inhibition and afterflame inhibition and so on multi-stage linkage control;And through pressure, temperature and flame sensor real-time acquisition of multi-dimensional data of explosion process;By before ignition, ignition instant and in the process of pressure relief with different doses of powdery inhibitor, the explosion suppression performance under different linkage strategies can be systematically evaluated;The application can simultaneously obtain peak pressure, pressure rise rate, flame propagation speed and re-burning conditions and other multi-parameters, realize the quantitative evaluation of the explosion suppression efficiency of powdery combustion inhibitor under multi-stage linkage explosion venting conditions, with the advantages of good data integrity, strong repeatability and suitable for standardization explosion-proof test method construction.

The application discloses an explosion-proof test circuit based on an IGCT power module, wherein a first plate of a capacitor module is electrically connected with a first end of a first power test unit, a second plate of the capacitor module is electrically connected with a second end of a second power test unit, and the first power test unit and the second power test unit are connected in series. The first power test unit comprises a conductive pad and an insulating pad, or the second power test unit comprises a conductive pad and an insulating pad. In this way, a straight-through short-circuit fault between the first power test unit and the second power test unit is simulated through the insulating pad and the conductive pad, and the voltage information and the current information of the capacitor module when the straight-through circuit fault occurs are verified, so that the straight-through short-circuit fault test can be realized through the explosion-proof test module, a complete converter valve or valve section is not needed to be formed, the experimental condition is simple, and the test is convenient.

The invention discloses radio frequency explosion-proof test equipment and a radio frequency explosion-proof test method. The equipment comprises an explosion-proof test device and a test circuit. A closed explosion cavity of the explosion-proof testing device is configured to be filled with explosion gas, the discharge mechanism comprises a discharge electrode and a driving assembly, the discharge electrode is arranged in the closed explosion cavity and comprises a first electrode and a second electrode, the first electrode is configured to be connected with tested radio frequency equipment, and the second electrode is connected with the driving assembly; the test circuit comprises a processing sub-circuit, and the processing sub-circuit is configured to send a first control instruction to the driving assembly under the condition that the first electrode receives a first radio frequency signal output by the tested radio frequency equipment at the maximum power. The driving assembly is configured to respond to the first control instruction and drive the second electrode to move relative to the first electrode, so that the second electrode and the first electrode are periodically connected and disconnected. According to the invention, explosion-proof safety performance testing can be carried out on the tested radio frequency equipment which is actually applied, and actual operation requirements are better met.

The utility model discloses a split type explosion-proof test box for battery testing, which relates to the technical field of battery testing, and comprises a box body, a detection instrument and a pressure relief mechanism, and an opening is arranged on the side surface of the box body; an opening is formed in the box body, the bottom plate trolley enters and exits the box body through the opening, a bottom plate used for bearing a battery is arranged on the bottom plate trolley, a moving mechanism is arranged below the bottom plate, a protective cover is movably connected to the upper face of the bottom plate, and a pull rod is connected to the protective cover. The device is good in compatibility, can adapt to batteries of different sizes, meets the requirements of data recording and phenomenon observation in the testing process, keeps the state of residues after testing to be complete, keeps the testing detail to be complete, and is safe and reliable in subsequent disassembly, analysis and transfer.

The invention discloses a strain optical cable installation process calibration and test method, and relates to the technical field of strain optical cable test. The device comprises a testing system, the testing system is composed of a linearly distributed steel bar tensioning module, a plurality of pouring modules, a fixed-point steel bar clamp and optical cable data acquisition equipment, optical cable penetrating openings and steel bar penetrating openings are formed in the two sides of the pouring modules, the steel bar tensioning module comprises a transverse jack, and a movable-point steel bar clamp is fixed to the telescopic end of the transverse jack. According to the invention, a novel test method is designed; the device can verify and test the influence of different laying processes and embedding installation processes on the optical cable test accuracy, the influence of concrete layers made of different materials on the optical cable, the difference and respective influence of the same optical cable in embedding installation and surface installation, and the influence of the shrinkage strain of concrete on the optical cable, and the integration effect is good. The testing efficiency and precision are improved, quality detection of the optical cable is facilitated, and development and design of a novel optical cable are assisted.

The utility model relates to the technical field of toughened glass, in particular to a toughened glass explosion-proof testing mechanism which comprises a bottom plate capable of placing glass to be tested, a blocking and protecting mechanism capable of blocking glass fragments, a detection mechanism capable of detecting the glass and a plurality of positioning mechanisms. According to the utility model, the glass to be tested is placed on the bottom plate, then the ball body with a proper specification is selected, the U-shaped rod adjacent to the ball body is supported by the supporting rod, then a user manually moves the glass to adjust the impacted position of the glass according to the falling point indicated by the laser of the laser pen, so that the part, needing to be impacted, of the glass is located at the laser red point, and the supporting rod slides to pull out the glass. The ball naturally falls to impact the glass, the falling point of the ball is fixed, a user can manually adjust the position between the U-shaped rod and the adjacent rotating rod and then fix the U-shaped rod and the adjacent rotating rod through a bolt, the height of the ball is adjusted, and the falling point of the ball is adjusted; the error of impact force generated by falling of the steel ball every time is reduced, and the baffle and the cover plate can be used for protecting personnel.

Methods of characterizing bondline integrity of structural assemblies, methods of establishing reduced proof pressure differentials for proof testing a structural assembly that includes a bondline, methods of proof testing a structural assembly, and acoustic evaluation systems are disclosed herein.

The utility model discloses a wiring harness color error-proofing testing device, which comprises a seat body, a wiring harness detection groove, a wiring harness imbedding channel and a color sensor, the wire harness detection groove and the wire harness imbedding channel penetrate through the base body in the left-right direction, the wire harness imbedding channel is located in front of the wire harness detection groove, the rear end of the wire harness imbedding channel is communicated with the wire harness detection groove, and the front end of the wire harness imbedding channel extends forwards and penetrates through the front end face of the base body; a color sensor installation groove is formed in the position, over the wire harness detection groove, of the base body, the bottom end of the color sensor installation groove is communicated with the wire harness detection groove, the color sensor is fixedly arranged in the color sensor installation groove, and the color collection end face of the color sensor is arranged facing the wire harness detection groove. The wire harness color error-proofing test device can realize rapid detection of wire color codes of the wire harness, and is especially suitable for assembly process detection before wire harness power-on test.

The utility model belongs to the technical field of explosion-proof tests, and particularly relates to an explosion-proof test device for small-sized explosion-proof equipment, which comprises an explosion-proof tank, the outer wall of the explosion-proof tank is provided with a purging air inlet, an air distribution inlet, an air outlet I and an air outlet II, and the outer wall of the explosion-proof tank is fixedly connected with a push rod. An auxiliary test assembly is arranged in the explosion-proof tank, a pressure detector is fixedly mounted in the inner wall of the explosion-proof tank, and the auxiliary test assembly comprises a protective seat. According to the explosion-proof test device for the small-sized explosion-proof equipment, the reciprocating screw rod is driven to rotate by rotating the handle, and then the moving block is driven to move along the screw rod, so that the position of the spray head fixedly connected with the moving block can be flexibly adjusted, and the flexible adjustment capability can effectively reduce the blowing and gas distribution time and improve the test efficiency; more uniform gas distribution in the test process can be ensured, and the accuracy and the reliability of a test result can be improved.

The invention discloses a dust test device of a sealing element for an electric drive system, and relates to the technical field of electric drive system sealing, the dust test device comprises a base, the upper side of the base is fixedly connected with an oil chamber, the left side and the right side of the oil chamber are fixedly connected with supporting frames, and a cross beam is arranged between the two supporting frames; a sealing flange is arranged on the outer side of the supporting frame, a sealing piece body is arranged on the inner side of the sealing flange, a shaft to be tested is arranged on the inner side of the oil chamber, and one end of the shaft to be tested penetrates through the sealing piece body. According to the dust test device of the sealing element for the electric drive system, the oil chamber, the supporting frame, the sealing element main body, the shaft to be tested and the feeding pipe are arranged, so that sealing and dustproof tests can be carried out on the sealing element; meanwhile, by means of a feeding pipe, a funnel, a sliding block, a rear plate, an inclined plate I and an inclined plate II, the spiral conveying cylinder can swing and the funnel can be controlled to move up and down repeatedly during feeding, so that the entering dust is uniformly distributed, and the reduction of the dustproof test precision is avoided.

This application provides a sliding test device for performing sliding tests on a test object. The device comprises a support mechanism; a first fixing mechanism slidably connected to the support mechanism for fixing a first end of the test object; a winding shaft disposed on the support mechanism; during the sliding test, the middle portion of the test object is wound around the outer circumferential surface of the winding shaft; a second fixing mechanism for fixing a second end of the test object and capable of moving relative to the support mechanism; wherein the angle between the line connecting the first fixing mechanism and the winding shaft and the line connecting the second fixing mechanism and the winding shaft is greater than 0° and less than 180°; and a first driving member connected to the second fixing mechanism for driving the second fixing mechanism to move, thereby causing the test object to slide back and forth relative to the winding shaft during the sliding test. This test device can verify the reliability of the test object by repeatedly bending or sliding it.

The invention discloses a special environment weather resistance test device and test method for monitoring a current sensor on line, and belongs to the technical field of current sensor tests.The device comprises a test box, a test tool and an excitation output source, the test tool is arranged on the upper portion in the test box, and an ultraviolet lamp array is arranged on the lower portion in the test box; the excitation output source is arranged on the top surface of the test box, and the excitation output source is connected with the two ends of the test tool. A special excitation circuit is additionally arranged outside the test box, and a sensor test tool is designed in the test box, so that various performance tests of sensitivity, dynamic range, linearity error and the like of current sensors of various models can be carried out under the extreme environment condition that the current sensors are always in the environment weather-proof test box.

The utility model belongs to the technical field of valve testing, and particularly relates to an explosion-proof testing system of a low-temperature valve, which comprises a testing room, a mounting pit is arranged on the ground of the testing room, a low-temperature tank, a ventilation system and a leakage rate detection system are arranged in the mounting pit, the low-temperature tank is connected with a liquid nitrogen filling system, and the ventilation system is connected with a liquid nitrogen outlet. A temperature detection system is arranged in the low-temperature tank, and a valve to be detected is placed in the low-temperature tank and communicated with the high-pressure gas conveying system. According to the utility model, through the low-temperature tank, the liquid nitrogen filling system, the temperature detection system and the high-pressure gas conveying system, remote testing of the low-temperature valve is realized, the testing efficiency of the low-temperature valve is greatly improved, the safety of testing personnel is ensured, and the environment of a testing site is detected and ventilated through the ventilation system and the leakage rate detection system; and the safety of testers in the valve dismounting and mounting process is ensured.

The utility model discloses an extruding machine with a positioning function, which comprises a bearing frame and an anti-explosion machine shell, and further comprises a transverse double-shaft air cylinder and a vertical double-shaft air cylinder, and the transverse double-shaft air cylinder and the vertical double-shaft air cylinder are respectively fixed at one end and the bottom of the inside of the anti-explosion machine shell welded at the top of the bearing frame. According to the utility model, the vertical positioning seat and the like are arranged, so that when the device is used, the transverse double-shaft cylinder is started, and the extrusion test disc correspondingly arranged at the output end of the transverse double-shaft cylinder can move towards the transverse positioning seat, so that the extrusion explosion-proof test can be carried out on the two side surfaces of the periphery of the lithium battery to be tested; the vertical double-shaft air cylinder is started, the extrusion test disc correspondingly installed at the output end of the vertical double-shaft air cylinder can move towards the vertical positioning base, and therefore extrusion explosion-proof testing can be conducted on the upper face and the lower face of the lithium battery to be tested, and the device achieves multi-position testing, is high in functionality and convenient to popularize.

This application provides an automated flexible changeover control method for projection welding based on parameters of multiple parts, including: S1, selecting the parameter group corresponding to the current workpiece model on the human-machine interface of the central control system; S2, automatically loading welding parameter thresholds and control rules according to the selected parameter group, and sending them to the projection welding machine and robot controller via bus protocol; S3, starting the 3D vision system to collect the workpiece's pose information, calculating the path offset using the offset calculation formula based on the collected pose information, and correcting the robot's grasping path and projection welding station sequence in real time; S4, executing the projection welding production process and monitoring for anomalies in real time; S5, if an anomaly is detected in step S4, a partial pause signal is output, pausing only the abnormal station while keeping other stations open but not performing any actions; after manual confirmation and reset, a production cycle verification test is performed, and if the test is normal, normal production continues. This application can shorten changeover time and improve production continuity.

The invention relates to the technical field of down jacket fabric testing, and provides a down jacket fabric down-proof testing device and method.The down jacket fabric down-proof testing device comprises a shell and a plurality of detection units arranged on the shell in the circumferential direction, each detection unit comprises a down feather cavity and an air inflation cavity, and a testing opening is formed in the side, facing the exterior of the shell, of each down feather cavity; a positioning assembly is arranged in the testing opening, a matched net-shaped plate is arranged in the down feather cavity, a sealing piston is arranged in the air inflation cavity, and the testing device further comprises a driving assembly used for driving the sealing piston and the net-shaped plate to move in a reciprocating mode in the direction of the testing opening. The multiple detection units can synchronously test multiple down jacket fabric samples, so that the multiple down jacket fabric samples can be rapidly tested, force is applied to the inner side of the tested down jacket fabric to promote down to impact the fabric, no object is in contact with the outer side of the fabric, and the down is prevented from getting out of the fabric. And accurate and real feedback of the down drilling performance of the down jacket fabric is ensured.

The invention belongs to the technical field of explosion-proof electrical equipment detection, and relates to a method for improving gas uniformity of a 3.6 m explosion-proof test tank, which comprises the following steps: arranging a plurality of sampling points in the 3.6 m explosion-proof test tank to realize three-dimensional coverage of gas concentration distribution in the tank; gas guide pipes matched with the sampling points in number are laid on the inner wall of the 3.6 m explosion-proof test tank, all the sampling points are communicated to the outside of the 3.6 m explosion-proof test tank through the gas guide pipes, and control valves are installed at outlets of the external gas guide pipes to control gas circulation; two stirring fans are respectively mounted at the diagonal positions of the front end and the rear end in the tank body, convective circulation is formed, gas samples of all sampling points are guided out through the gas guide pipes, the concentration is monitored in real time by using measuring equipment, and after the stirring fans are started for stirring, the concentration difference value is controlled within + / -0.4%; layering verification is carried out on light or heavy gas, the layering phenomenon is eliminated through stirring of the stirring fan, the gas uniformity of the 3.6 m flame-proof test tank is improved, and the gas preparation time is shortened.

The utility model discloses a heating and ventilation pipeline interface leakage-proof test device, which comprises an operation table, a movable frame fixedly arranged on the left side of the lower part of the operation table, and a limiting mechanism arranged above the operation table, wherein the limiting mechanism comprises a placing frame, a pipeline body, a clamping plate, a limiting block, a moving block, a fixing shaft, a fixing plate, a rotating plate and a first electric telescopic rod, the placing frame is fixedly installed above the operation table, and the clamping plate is connected to the front side of the upper portion of the placing frame in a clamping mode. According to the leakage-proof testing equipment for the heating and ventilation pipeline connector, the position of a pipeline can be fixed through the limiting mechanism, so that the pipeline detection precision can be improved, meanwhile, the rapid drainage mechanism is arranged, water after testing can be rapidly drained out of the pipeline, the testing efficiency can be greatly improved, and in addition, the water recycling mechanism is arranged, so that the testing efficiency is improved. And the tested water can be recycled, so that the waste of water resources can be effectively avoided.

The present invention discloses a Hall effect motor position accuracy verification test method, device, and equipment, relating to the field of vehicle intelligent control technology. The method includes setting the hardware parameters of the Hall effect motor in the vehicle window system and measuring its operating parameters based on the position accuracy and reciprocating travel range requirements of the Hall effect motor; setting debugging parameters and an initial test process, and testing the position deviation of the window glass after a preset number of reciprocating movements between the initial position and the anti-pinch zone, in conjunction with the pulse counting interval corresponding to the anti-pinch zone; and designing a test process based on the initial test process and a self-learning strategy to test the accuracy of the Hall effect motor based on the test results of the initial test process and after the test passes. This application can effectively improve the accuracy of anti-pinch triggering.

The utility model belongs to the technical field of explosive-proof test containers, and particularly relates to a novel explosive-proof test container which comprises a base, a transverse plate is arranged on the side wall of the base, an explosive-proof tank is arranged on the base, and a valve is arranged on the explosive-proof tank. According to the novel explosion-proof test container, a connecting block and a movable rod are pulled outwards, so that a circular plate abuts against the outer wall of a fixed plate, the connecting block moves outwards to drive a second connecting rod to move outwards along with the second connecting rod, and therefore position limitation of a trapezoidal rod to an auxiliary plate is relieved; an auxiliary plate is driven to elastically reset under the elastic reset effect of a third spring, so that an inserting rod is inserted into an inserting hole of a connecting plate, meanwhile, a movable rod moves to drive a first connecting rod to be clamped into a groove of a movable plate, at the moment, two sets of movable plates are driven to be clamped into a notch of the connecting plate, and therefore primary fixing of the sliding door is completed; and then bolts are screwed in along the threaded holes, so that the connecting blocks are fixed, and final fixing of the sliding door is completed.

The invention discloses a shock wave simulation method for a shield segment explosion-proof test. Precise control over peak pressure fluctuation and pulse width errors is achieved by combining a high-precision mass flowmeter and electromagnetic parameter regulation and control on the basis of a quantitative relation model constructed based on the fluid dynamics theory, meanwhile, an electromagnetic pre-compression and chemical detonation composite driving mode is adopted, shock waves with the rise time shortened and the peak pressure reaching 300 MPa or above are generated, and the shock waves can be applied to the field of hydraulic engineering. The steep front edge and high-frequency oscillation of real explosion are reproduced, the waveform limitation of single air pressure driving is broken through, a multi-field coupling monitoring system achieves full-time-history data capture of duct piece strain, displacement, temperature and the like through a high-frequency sensor and a high-speed camera system, weak parts are accurately recognized, meanwhile, the 1500-DEG C high-temperature simulation capacity is achieved, and the system is suitable for being used in the field of high-temperature simulation. The critical failure pressure is accurately determined in combination with a stepped pressure test, various extreme working condition requirements are met, nanosecond synchronization and safety redundancy design is achieved through an intelligent control system, the experiment efficiency is improved, and a high-fidelity and repeatable test platform is provided for research on the anti-knock performance of the shield segment.

The invention relates to the technical field of explosion-proof testing, in particular to an explosion-proof testing device for an explosion-proof electric roller under the continuous action of allowable resultant force, which comprises a testing mechanism, the testing mechanism is arranged in an explosion-proof testing groove, the explosion-proof electric roller is mounted on the testing mechanism, and the explosion-proof electric roller is coated with a conveying belt. The testing mechanism comprises two hydraulic supporting units which are symmetrically arranged, the two ends of the explosion-proof type electric roller are erected on the two hydraulic supporting units respectively, upward thrust applied to the explosion-proof type electric roller by the hydraulic supporting units is collected through the pressure testing device, and the conveying belt is fixed to the hydraulic supporting units. The tension testing device collects the tension applied to the conveying belt, and it is guaranteed that the allowable resultant force applied to the electric roller during testing reaches the testing standard. The ignition module is connected with the interior of the explosion-proof test groove, explosive gas mixtures in the explosion-proof electric roller are ignited through an electric signal spark plug, the electric roller can be restored to be used on site, and the test precision is high.

The utility model discloses a hinge product error-proofing testing mechanism, relates to the technical field of testing tools, solves the problem that the testing efficiency is affected due to the fact that errors are easy to occur when rotation testing is carried out manually, and comprises a working table, a positioning seat, a pressing assembly, a first testing assembly and a second testing assembly, the positioning seat is fixedly arranged on the working table, and the pressing assembly is fixedly arranged on the working table. The pressing assembly is arranged on one side of the positioning seat, the first testing assembly comprises a support, a rotating frame, an installation seat, a second air cylinder, a type testing block and a first motor, the second testing assembly comprises a testing column and a second motor, and an abutting piece is arranged at the end of the testing column. According to the utility model, through the arrangement of the positioning seat, the pressing assembly, the first test assembly and the second test assembly, the manual operation during the test is reduced, so that the error probability can be reduced.

The invention discloses a high-speed railway signal system engineering verification test method for a new line lead-in hub. The method relates to the technical field of engineering test and verification of high-speed railway signal systems, and comprises the following steps: S1, building a simulation environment in a laboratory; s2, verifying the functions of the subsystems in the simulation environment and the functions of interfaces among the subsystems; s3, analyzing the train operation data through the comprehensive test subsystem to obtain a simulation result; and S4, determining the test content of the on-site bullet train according to the simulation result, presetting the priority of the test content, and carrying out testing in sequence to obtain a test result. Stable and reliable operation of a signal system after a new line is introduced into a hub can be ensured, and safe and efficient operation of a high-speed railway is ensured.

The invention belongs to the technical field of offshore oil and gas deepwater exploration, and provides a method for determining a viscous friction force model of drilling well drainage liquid after marine riser dissociation, and the method comprises the steps: S1, obtaining original data, comprise the pressure difference between the top and the bottom of the riser, the liquid column height, the cross section area of the inner wall of the riser, the flow velocity of liquid in the riser, the viscous friction force of discharged liquid of the inner wall of the riser and the like; s2, analyzing data features, and analyzing and screening Top-N key features of the data features; s3, processing and classifying the data, and executing a data feature standardization operation by using a Min-Max scaling normalization method; s4, determining and optimizing a data driving model structure, and selecting a random configuration neural network as a core tool; s5, training the model, and alternately executing network node growth and a Dropout regularization algorithm; and S6, testing the model, and verifying whether the Top-N key features on the test data are matched or not.

The invention discloses an explosion-proof test device for micro-miniature electrical equipment. The explosion-proof test device comprises an explosion-proof test tank, a sample clamp, an integrated joint and an adapter, the explosion-proof test tank is of a vertical cylindrical structure, a test bed is fixedly arranged in the explosion-proof test tank, and a controllable explosive gas environment is provided; the sample clamp is located in the tank, and the base is fixedly connected with the test bed and is used for clamping micro-miniature electrical equipment to be tested; the integrated joint is fixedly mounted on the sample clamp, integrates the gas distribution pipeline, the ignition device and the pressure sensor, and realizes gas replacement, ignition triggering and dynamic pressure monitoring; the adapter is fixed to the side wall of the tank body, one end of the adapter is connected with the gas distribution pipeline of the integrated connector, the other end of the adapter is connected with an external valve, and the built-in compression type metal wire mesh blocks explosion flames from spreading outwards. An observation window is formed in the side wall of the tank body and is opposite to the sample clamp, so that real-time monitoring is realized. The device is compact in structure, has integrated functions, is safe and reliable, and is suitable for explosion-proof performance tests of equipment such as miniature explosion-proof electromagnetic valves, microswitches, sensors and the like.

The utility model discloses liquid inlet prevention testing equipment for surgical accessories. The liquid inlet prevention testing equipment comprises a base frame; the lifting table assembly and the first driving assembly are both arranged on the base frame; the second driving assembly is connected with the first driving assembly, the lifting table assembly can adjust the distance between the lifting table assembly and the second driving assembly through lifting, and the first driving assembly can drive the second driving assembly to move in the first direction; the spraying part is arranged on the second driving assembly and communicated with the reservoir, and the second driving assembly can drive the spraying part to move in the second direction; the lifting direction, the first direction and the second direction of the lifting table assembly are different from one another. Thus, through driving of the first driving assembly and the second driving assembly, the spraying piece can move in the first direction and / or the second direction, then water in the reservoir is sprayed to the finger press button of the surgical accessory, the spraying piece can move at a constant speed in the spraying process, and the water can be evenly sprayed; and the water receiving balance of the finger press button of the operation accessory is improved.