131 results about "Leakage test" patented technology

The invention discloses a combined sealing device frictional wear and external leakage test bed and a test method thereof, and aims to solve the problem that the existing device cannot accurately know the sealing wear. The test bench comprises a rack, a test piece, a stay wire sensor, an oil pipe and a hydraulic system, wherein an oil tank is arranged in the rack. The test piece comprises a test sealing assembly and a plunger, and the stay wire sensor is connected with a sealing combination structure. During testing, the hydraulic system drives the plunger and the sealing assembly to move relatively, the pull wire sensor measures displacement, friction force is calculated by combining pressure data to reflect abrasion, and the oil groove collects leaked oil. According to the invention, comprehensive testing of friction, wear and leakage is realized, sealing performance and wear rules under multiple working conditions can be analyzed, the structure is convenient to observe and operate, and optimization of the sealing structure is facilitated.

The invention provides a negative pressure suction detection device for a paper cup leakage test, and belongs to the field of paper cup detection, and the negative pressure suction detection device comprises a first air bin, a first air pump, a motor, a threaded rod, a top plate and a lug plate, the top plate is arranged above the first air bin, the lug plate is fixedly connected to the outer wall of the top plate, an inflation assembly is located outside the lug plate, and a clamping assembly is arranged on the outer wall of the top plate. The clamping assembly is located at the top of the first air bin, and the lifting assembly is located in the first air bin. According to the paper cup, a top plate is moved, a first air bag is moved into the paper cup, a second air pump is controlled to inflate the interior of a second air bin through a first pipeline and a second pipeline, at the moment, air in the second air bin enters the first air bag, and the first air bag expands under the action of air pressure; the air bag is arranged on the paper cup and is attached to the inner wall of the paper cup, at the moment, the air bag can seal the paper cup, and therefore the problem that an existing paper cup leakage detection device is insufficient in sealing performance of the paper cup is solved.

The invention provides a method and system for detecting inner leakage of a positive pressure helium detection valve, and relates to the technical field of valve sealing performance detection.The method comprises the steps that test gas with rated working pressure is applied to a to-be-detected valve, the change of the internal pressure of the valve is monitored in real time under the rated working pressure, and positive pressure inner leakage pre-detection is conducted; if the pressure is kept stable, a judgment result of passing the pre-detection is obtained, and if the pressure fluctuation exceeds a set threshold value, the test is terminated and an alarm signal is sent out; and based on the judgment result of the pre-detection, in the process of continuously applying the test gas, controlling the temperature condition of the to-be-tested valve, repeatedly executing the positive pressure inner leakage test at different temperatures, and recording the basic leakage rate at each temperature point to obtain an initial dynamic sealing performance curve. According to the invention, accurate correction and multi-dimensional data fusion of valve leakage rate detection data can be realized, and the accuracy of inner leakage detection of the valve under a temperature alternating working condition is improved.

A rolling-element bearing includes first and second concentric ring assemblies mounted for relative rotation. The first ring assembly includes a first rolling ring and a first sealing ring supporting first and second seal elements each having a lip. The second ring assembly includes a second rolling ring and a second sealing ring contacted by the lips of the first and second seal elements. The first sealing ring includes a first sealing member radially spaced from the first seal element and a first leakage test channel having an inlet between the first sealing member and the first seal element and an outlet at an external surface of the first sealing ring, and / or the second sealing ring includes second and third sealing members and a second leakage test channel having an inlet between the second and third sealing members and an outlet at an external surface of the second sealing ring.

The invention discloses a real-time leakage monitoring system for a high-pressure-resistant plastic butterfly valve. The real-time leakage monitoring system comprises an acquisition module, a physical analysis module, a fusion module and an early warning module, wherein the physical analysis module is used for carrying out a leakage test on the high-pressure-resistant plastic butterfly valve through physical and mechanical analysis; and the fusion module is used for performing deviation calculation on the static health benchmark, the dynamic health benchmark, the strain health benchmark, the quiet benchmark and the health torque benchmark, and obtaining specific performance characteristics in each leakage state through a linear equation set and double-cosine finite integral transformation. Aiming at the material characteristics of the high-pressure-resistant plastic butterfly valve, a multi-dimensional and refined health reference system is constructed; an advanced mathematical model based on multi-sensor data fusion, a linear equation set and double-cosine finite integral transformation is introduced, and accurate recognition, quantification and physical characteristic representation of the leakage state are achieved; and the sealing performance can be evaluated under a non-fluid working condition, so that a comprehensive and intelligent real-time leakage monitoring scheme is provided.

The invention relates to the technical field of servo valve testing, and particularly discloses an electro-hydraulic servo valve test bench and a test method thereof, and the test bench comprises a calibration basis obtaining module which constructs each correction basis; the static performance test module performs static performance synchronous test and signal compensation on the tested electro-hydraulic servo valve based on the channel delay compensation table to obtain a static performance index; the dynamic performance test module performs dynamic frequency sweeping test and distortion correction on the tested electro-hydraulic servo valve based on the channel delay compensation table and the frequency-amplitude compensation coefficient mapping table to obtain a dynamic performance index; the internal leakage performance test module is used for performing internal leakage test and leakage amount compensation on the tested electro-hydraulic servo valve based on a temperature-viscosity-internal leakage amount three-dimensional correction model of the hydraulic oil source to obtain an internal leakage performance index; the test result summarization module obtains a test result based on the indexes; the integrated precise test of the static and dynamic performance and the internal leakage performance of the servo valve is realized.

The utility model discloses a heat exchanger vacuum-pumping leakage test system, which comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with a support, the upper surface of the support is fixedly connected with a shell, the upper surface of the shell is communicated with a connecting pipe, the side surface of the shell is fixedly connected with a pipe plate, the side surface of the pipe plate is provided with a flange, and the flange is provided with a flange. The side, away from the tube plate, of the flange is fixedly connected with a tube box. The device comprises a fixing plate, the upper surface of the fixing plate is slidably connected with a supporting plate, a fastening bolt is arranged in the supporting plate, the upper surface of the supporting plate is fixedly connected with a vacuum pump and an air heater, the side surface of the vacuum pump communicates with a vacuum pipe, and a vacuum gauge is arranged at the end of the vacuum pipe. Through the above structure, the vacuum pump is slidably arranged on the surface of the fixing plate, and the fastening bolts are arranged to fix the vacuum pump, so that the position of the vacuum pump can be conveniently and finely adjusted after the device is fixed, vacuumizing detection is more accurate, and a vacuum tube junction is prevented from affecting a detection result.

The invention relates to a method for operating a mobile tank system (1) for a fuel gas, in particular for hydrogen or natural gas, comprising at least one pressurized gas container (2) in which the fuel gas is stored under pressure, and a control unit (3) with the aid of which sensor data from at least one sensor (4) installed in the tank system (1) are read and evaluated. According to the invention, in phases in which the tank system (1) is out of operation, the control unit (3) is temporarily activated via an implemented wake-up function and used to carry out a leakage test.

The application relates to the technical field of aircraft air conditioning system detection, in particular to an airplane trimming air valve leakage testing device and method. The device comprises a support structure, an input shaft, an output shaft, a valve and a position adjusting structure. One side of the input shaft is provided with a first clamping surface, and the input shaft is provided with a first channel for inputting test gas. The first channel is communicated with the first clamping surface. One side of the output shaft is provided with a second clamping surface, and the second clamping surface and the first clamping surface are oppositely arranged for clamping the airplane trimming air valve to be tested. The output shaft is provided with a second channel, and the second channel is communicated with the second clamping surface. The valve is used for controlling the opening or closing of the second channel during the test. The position adjusting structure is used for adjusting and locking the distance between the input shaft and the output shaft. The device solves the problem that, in the existing maintenance operation, due to the lack of standardized tooling, the air valve gas path interface cannot be effectively connected to implement the quantitative indexes of the manufacturer's maintenance manual, and fills the gap of the leakage testing standardized detection tool.

The traction motor (10) features: a fluid-tight stator chamber (38) with a motor stator (30), wherein the stator chamber (38) has a fluid inlet (36) and a fluid outlet (37), and a rotor chamber (28) with a motor rotor (20), wherein the rotor chamber (28) has an air inlet (26) and an air outlet (27). The examination order (100) indicates: a test gas source (102) with a detectable test gas (103) which is fluidically connected to the stator chamber fluid inlet (36) via a fluidic inflow control (105), a switchable outlet valve (110) connected to the stator chamber fluid outlet (37), a test gas detector (112) that can detect the test gas (103) and that is fluidically connected to the rotor chamber air outlet (27), and a vacuum gas pump (114) through which rotor chamber air is pumped or drawn from the rotor chamber (28) through the rotor chamber air outlet (27) to the test gas detector (112), and an electronic test control (120) which is connected via signal links to the test gas inflow control (105), the stator chamber outlet valve (110) and the test gas detector (112). The electronic test control (120) generates the following process steps: Introducing the test gas (103) from the test gas source (102) into the stator chamber (38) such that the stator chamber gas pressure (p38) is at a defined above-atmospheric test gas overpressure (ps), and Activating the gas pump (114) and the test gas detector (112), thereby quantitatively detecting leakage test gas flowing into the air-filled rotor chamber (28).

The utility model discloses an electric leakage test detection loop and a release, and belongs to the technical field of low-voltage electric appliances. The electric leakage test detection loop comprises a first connecting piece and a first torsion spring, wherein the first torsion spring is connected with the first connecting piece; a first breakpoint is formed between the second torsional spring and the first connecting piece, and the second torsional spring can abut against the first connecting piece; the first torsional spring and the second connecting piece are second breakpoints, and the first torsional spring can abut against the second connecting piece; one end, deviating from the first connector, of the second torsion spring is connected with the third connector; one end of the second connecting piece away from the first torsion spring is connected with the circuit board. One end of the third connecting piece away from the second torsion spring is connected with the circuit board. The first torsion spring and the second torsion spring are arranged on the outer side of the release shell, so that the space in the release shell is saved, the purpose of reducing the design space of the electric leakage release is achieved, and the dielectric property of a product is improved. And by arranging the two breakpoints, mistaken touch of an operator is avoided, and high stability and reliability are achieved.

The utility model discloses an electric leakage test circuit, an electric leakage protection circuit and an electric leakage circuit breaker, which can safely and effectively simulate electric leakage conditions through the electric leakage test circuit, accurately sense electric leakage signals through a residual current transformer, prevent current backflow through a diode D15 and guarantee test accuracy. Meanwhile, the electric leakage signal processing circuit, the anti-surge circuit, the rectifying circuit and other modules are integrated to form an electric leakage protection system with complete functions, and stable operation of the circuit is ensured. The system not only improves the electric leakage detection precision and safety, but also optimizes the circuit structure and functions, provides powerful guarantee for safe and stable operation of an electric power system, and has remarkable beneficial effects.

A method of testing an analytical valve assembly of a gas chromatograph includes fluidly coupling first and second activation ports of the analytical valve assembly to a manifold. The activation port is configured to control first and second valving mechanisms that selectively couple and block fluid communication between first and second pairs of analysis ports of the analysis valve assembly in response to an applied pressure. Less than all of the analysis ports are fluidly coupled to the manifold. Gas is applied to the manifold under pressure, and the first and second activation ports and less than all of the analysis ports are pressurized. A flow of the gas through the manifold is measured, and a leak in the analytical valve assembly is detected based on the measured flow. The invention also provides a leakage test fixture and a test system.

The application discloses a kind of synchronous double liquid grouting device test methods, comprising the following steps: layout working condition simulation system connects the inner cavity of synchronous double liquid grouting pipe, and layout power control system connects the piston rod of synchronous double liquid grouting pipe;Load is applied to piston rod by power control system, and working condition simulation system controls piston rod to reciprocate along inner cavity, executes wear test;Different positions of piston rod are locked by power control system, and according to working condition simulation system, pressure oil is output to the inner cavity of synchronous double liquid grouting pipe, and executes pressure leakage test.The beneficial effects of the application: the working scene of the synchronous double liquid grouting device is simulated by the hydraulic system in the application to test the synchronous double liquid grouting device.No need to install real machine, can effectively reduce test cost, also can reduce test difficulty and requirement to test space.

This utility model relates to the field of leakage testing technology for waterproof materials in high-water-level basements, and more particularly to a leakage testing device for waterproof materials in high-water-level basements. The device includes a leakage testing chamber with water passage holes on its inner side and a water passage groove inside. Symmetrically arranged pressure sensors are fixedly connected to the inner side of the water passage groove. Electromagnetic valves are connected to both sides of the leakage testing chamber, and variable frequency centrifugal water pumps are connected to the front and rear sides of the chamber. A sealing groove is provided at the top of the leakage testing chamber. In this utility model, the pressure sensors and variable frequency centrifugal water pumps work together to accurately adjust the appropriate test water pressure. The intermittently operating electromagnetic valves automatically release water, and the variable frequency centrifugal water pumps automatically adjust the water level. The multiple water passage holes simulate water flow impact, ultimately achieving dynamic water flow detection.

The invention discloses automobile part brazing leakage testing equipment, which is applied to the technical field of brazing leakage testing equipment, and is characterized in that the automobile part brazing leakage testing equipment comprises a testing seat; a clamping assembly used for synchronously clamping a plurality of to-be-tested parts is movably connected to the testing base based on the feeding and discharging conveying assembly, and a lower sealing base and an upper sealing base are fixedly connected to the testing station of the testing base in the vertical direction based on the guide pressing assembly. The lower sealing seat and the upper sealing seat form a sealing test cavity, the lower sealing seat is uniformly and fixedly connected with a plurality of sealing positioning assemblies, the upper sealing seat is fixedly provided with an inflation recovery assembly, and the sealing positioning assemblies are internally and fixedly connected with vacuum suction pipes and helium detection assemblies used for detecting helium; the method has the technical effects that the test efficiency is improved, and the test cost is reduced.

The invention provides a storage battery liquid leakage detection method and device, terminal equipment and a storage medium, and the method comprises the steps: carrying out the dip angle test of a to-be-detected storage battery based on a first preset angle, and obtaining a first liquid leakage test result; wherein the storage battery to be detected is composed of a plurality of storage battery unit cells; carrying out a carrying test on the to-be-detected storage battery according to a preset surface position to obtain a second liquid leakage test result; wherein the carrying test is to turn over the storage battery to be detected in sequence according to the preset surface position; when the first liquid leakage test result and the second liquid leakage test result both show no liquid leakage, carrying out an acid leakage test on the to-be-detected storage battery based on a preset amplitude to obtain a third liquid leakage test result; and when the third liquid leakage test result is no liquid leakage, determining that the liquid leakage detection result of the to-be-detected storage battery is passed. The accuracy and the reliability of a liquid leakage detection result can be improved.

The invention discloses a water-cooling plate air tightness detection method and system. The water-cooling plate air tightness detection method comprises the steps that a water-cooling plate is installed at a preset position in a vacuum box; filling nitrogen into the water cooling plate; internal leakage detection is carried out through an internal mixing detection system; when the inner leakage detection is not qualified, stopping the detection; when the inner leakage detection is qualified, continuously filling nitrogen into the water cooling plate; blockage detection is performed through a flow resistance detection system; when the blockage detection is not qualified, stopping the detection; when the blockage detection is qualified, gas in the water cooling plate is discharged, and large leakage detection is carried out; when the large leakage detection is not qualified, stopping the detection; when the large leakage detection is qualified, the interior of the water cooling plate is vacuumized; background zero suppression is carried out, and micro-leakage detection is carried out through a helium detection system; if the micro-leakage detection is not qualified, stopping the detection and recovering helium; if the micro-leakage detection is qualified, the helium is recovered, and the detection is completed. According to the air tightness detection method for the water cooling plate, the detection efficiency is improved.

The utility model discloses a remote electric leakage experiment controller for a feeder switch. The remote electric leakage experiment controller comprises a housing; the relay device is fixed at the lower end in the shell; compared with the prior art, the utility model has the following advantages: 1, the remote control function is realized by using the RS485 communication module, so that an operator does not need to go to the field to operate feeder switches one by one to carry out a leakage test, and the working efficiency and the safety are greatly improved; 2, the internal temperature of the shell is monitored through the temperature sensor, and when the temperature reaches a certain value, the microprocessor controls the exhaust fan to work for active heat dissipation; and meanwhile, the air guide pipe is arranged, so that external air entering the shell can be directly guided to a heating area of the relay device, accurate heat dissipation is realized, and the service life of equipment is prolonged.

The invention discloses a storage tank leakage simulation test device and system. The storage tank leakage simulation test device comprises a gas generation module, a gas leakage simulation module, a gas export module and a plurality of test gas detection modules. The gas generation module is used for generating leakage test gas; the gas leakage simulation module comprises a plurality of leakage simulation combinations, and each leakage simulation combination comprises a simulation leakage port and a corner pressing cylinder; the corner pressing cylinder is used for opening the simulation leakage port; the test gas detection modules are used for detecting leaked test gas and recording gas leakage detection duration, so that a worker can obtain an optimal combination mode of the plurality of test gas detection modules according to the gas leakage detection duration after multiple tests; the gas export module exhausts the leakage test gas. The oil and gas leakage can be flexibly controlled, the leakage condition of each leakage point can be detected at the fastest speed through the optimal combination mode of the multiple test gas detection modules, and the experiment precision and safety are improved.

The invention discloses a hydraulic cylinder testing system and method, and relates to the technical field of hydraulic cylinder tests.The hydraulic cylinder testing system comprises a tested cylinder, a loading cylinder, a liquid tank, a liquid pump and a pressure adjusting loop, and a rodless cavity of the tested cylinder is connected with the liquid tank and the liquid pump to form a first liquid supply loop; a rod cavity of the tested cylinder is connected with the liquid tank and the liquid pump to form a second liquid supply loop, and a rod cavity of the loading cylinder is connected with the liquid tank and the pressure adjusting loop to form a third liquid supply loop. A rodless cavity of the loading cylinder is respectively connected with the liquid tank and the pressure regulating loop to form a fourth liquid supply loop, and each liquid supply loop is provided with a hydraulic control reversing valve and a hydraulic control one-way valve to control the on-off of the corresponding liquid supply loop and the flow direction of the liquid, so that the tested cylinder is tested. The test system can be used for carrying out a non-load test, a durability test, a leakage test and a withstand voltage test.

The utility model discloses a valve inner leakage testing and verifying device which comprises a connecting pipe and a ball valve, and the ball valve is in threaded connection with one end of the connecting pipe. The joint is in threaded connection with one end of the ball valve; the piezometric tube is in threaded connection with one side of the joint; the plug is arranged at one end of the piezometric tube; and the pressure gauge is in threaded connection with the outer wall of the pressure measuring tube. According to the valve inner leakage test and inspection device, the connecting pipe is connected with the blow-down valve of the station, pressure can be visually displayed through the pressure gauge during valve inner leakage detection, natural gas can be slowly and slightly leaked through the plug, a large amount of natural gas is prevented from being discharged, and whether inner leakage exists in the valve or not is judged by observing the pressure change of the pressure gauge.

The utility model discloses a tool for testing leakage and adhesion of a rubber sealing element, which integrates a leakage test function and an adhesion test function, simulates the actual working environment of the sealing element by using a test medium supply system capable of accurately controlling pressure, and drives a pressing plate assembly with a profiling pressing head through a lifting mechanism. Automatic pressing and separation of the sealing element in a simulated assembly state are achieved, comprehensive detection of the sealing performance and the anti-adhesion characteristic of the rubber sealing element can be completed without a machine, and pressure attenuation and separation force of a test medium are monitored in real time through a pressure sensor and a tension sensor. According to the invention, quantitative judgment on leakage and adhesion degree is realized, so that the detection capability and the evaluation accuracy of early quality defects of the rubber sealing element are remarkably improved, a reliable basis is provided for quality control and process optimization in the production process, and the delivery quality and the use reliability of products are fundamentally guaranteed.

The application discloses a high-pressure-resistant plastic butterfly valve real-time leakage monitoring system, comprising a collection module, a physical analysis module, a fusion module and an early warning module: the physical analysis module is used for conducting leakage test on the high-pressure-resistant plastic butterfly valve through physical mechanics analysis; the fusion module is used for carrying out deviation calculation on the static health benchmark, the dynamic health benchmark, the strain health benchmark line, the quiet benchmark line and the health torque benchmark, and obtaining specific performance characteristics in each leakage state through linear equation set and double-cosine finite integral inverse transformation. A multi-dimensional and refined health benchmark system is constructed according to the material characteristics of the high-pressure-resistant plastic butterfly valve; an advanced mathematical model based on multi-sensor data fusion, linear equation set and double-cosine finite integral inverse transformation is introduced, accurate identification, quantification and physical characteristic representation of the leakage state are realized, and the evaluation ability of the sealing performance under non-fluid working conditions is also possessed, so that a comprehensive and intelligent real-time leakage monitoring scheme is provided.

The present invention discloses a method and device for testing the effect of the sealing gap of a full-circle straight-through grate on leakage. By designing an equivalent test piece, the test method can conveniently and equivalently adjust the sealing gap without replacing the test piece, thereby equivalently testing the effect of different sealing gaps on grate leakage. The test device includes a base, a base cover, a movable seat, a gap adjustment device, an air supply device, a pressure sensor, and a temperature sensor, which can provide an experimental environment for leakage testing and conveniently adjust the sealing gap. The method and device for testing the effect of the sealing gap of a full-circle straight-through grate on leakage can achieve equivalent testing of the effect of the sealing gap of a full-circle straight-through grate on leakage.

The application relates to the technical field of fusion reactors, and discloses an assembly tool and an assembly method for a divertor. The box body is positioned and installed to the assembly tool through a first positioning surface, a second positioning surface and a third positioning surface; the first reference surface and the second reference surface are used to set a reference coordinate system when the assembly and the detection of the target plate are performed, and the target plate is detected and adjusted by taking the reference coordinate system as a reference, so that the profile tolerance of the target plate meets the error allowable range, and then the assembly precision of the divertor obtained through the assembly tool is guaranteed; the box body is installed to the assembly tool through the assembly tool, the target plate is preliminarily positioned and matched with the box body, a laser tracker is used to establish the reference coordinate system and acquire the actual profile of the target surface of the target plate, and the target plate is adjusted correspondingly, so that the assembly precision is improved, and the normal work of the divertor is effectively guaranteed; and the leakage test is used to guarantee that the cooling channel can normally perform the cooling work.

The utility model relates to the technical field of battery detection, in particular to a battery pack cooling liquid leakage test detection device. The rotary disc rotates around the horizontal axis and is matched on the base, the supporting plate is fixed to the center of the end of the rotary disc and is horizontally arranged, the four corners of the top face of the supporting plate are connected with testing plates through supporting springs, the testing plates are used for fixing the battery pack, and vibration motors are installed at the bottoms of the testing plates. According to the utility model, the battery pack can be tested and detected under the working conditions of rollover and turnover of the battery pack, and the battery pack can be tested and detected in a small-amplitude high-frequency jitter state, so that the accuracy of battery pack detection is improved.

The utility model relates to the technical field of oil storage cup assemblies, and discloses an oil storage cup assembly leakage test mechanism, which comprises a first storage box, fixing plates and a clamping device, the fixing plates are arranged on two sides above the first storage box, the clamping device is arranged on the inner side of the first storage box, a fixing frame is arranged on the top of the first storage box, and the clamping device is arranged on the fixing frame. The fixing plate is arranged on the inner side of the clamping device, a sliding device is installed in the middle of the inner wall of the fixing frame, the sliding device comprises a second storage box, a first storage groove and a second storage groove, the second storage box is installed in the middle of the inner wall of the fixing frame, and the first storage groove is formed in the upper portion of the interior of the second storage box; a second storage tank is arranged below the first storage tank, and the second storage tank is arranged on the inner side of the second storage box; manual operation is reduced, the device is more automatic, and the working efficiency of the device is improved.

This utility model relates to the field of corrugated pipe testing technology, and discloses a metal corrugated pipe bending anti-leakage test device. The device includes: a housing, with a pair of bases fixed to the bottom of the housing; a pair of linear reciprocating slide rails installed inside the housing; and a slider fixed to the top of each linear reciprocating slide rail, the slider being slidably connected to the housing via a transverse groove. This metal corrugated pipe bending anti-leakage test device, through the cooperation of the housing, bases, linear reciprocating slide rails, sliders, circular plates, supports, horizontal pipes, pipe valves, joints, pressure gauges, metal corrugated pipes, and sealing mechanisms, drives the linear reciprocating slide rails to bring the two sliders closer together, placing the metal corrugated pipe in a bent state. The entire device remains stationary for a certain period, and subsequent observation of the pressure gauge for pressure drop allows for the determination of the sealing performance of the metal corrugated pipe in the bent state, making the test results more rigorous.

The invention provides an electric leakage safety detection system for electronic and electric appliances, and relates to the technical field of electric leakage detection, the electric leakage safety detection system comprises a mounting seat, a detector is fixed on the surface of the mounting seat, two connecting plugs are arranged on the bottom surface of the detector, a connecting wire is fixed at the outer end of each connecting plug, and a contact head is fixed at the other end of each connecting wire. The bottom of the mounting seat is provided with a detection assembly, the detection assembly comprises an annular sliding rail, the top of the annular sliding rail is fixedly connected with the mounting seat, two sliding blocks are slidably mounted in the annular sliding rail, the contact head is mounted on the surfaces of the sliding blocks, and the contact head is close to the three-wire plug through a pushing assembly. After the plug is clamped, the plug is pulled out of the socket to be close to the detector, two contact heads in the detection assembly make contact with metal sheets of the three-wire plug, electric leakage testing is carried out on the three-wire plug, direct manual contact with the plug can be avoided in the process, and meanwhile electric leakage detection is more convenient by pulling out the plug to be close to the detector.