194 results about "Leakage test" patented technology

The invention relates to the technical field of electric leakage detection, in particular to an underground coal mine low-voltage remote electric leakage test system and method, and the system comprises a task allocation module, an off-state discrimination module, a signal transmission module, a state recognition module and a path receipt module. According to the method, the loop load level and the channel response condition are accurately evaluated, the task channel is dynamically matched, the task distribution blind area and error are reduced, the impedance difference structure and the continuous feedback trend are integrated to recognize the abnormal branch segment, and the driving and decoding mode is intelligently adjusted by using the signal amplitude and the interference proportion relation; signal transmission stability and data reduction accuracy are improved, a waveform drift trend and a load state combination are calculated in real time to accurately detect an electric leakage position, task initiation and response nodes are compared to ensure path synchronization legality, efficient linkage between load state change and signal drift is realized, electric leakage detection response speed and precision are improved, and reliability of electric leakage detection is improved. And the line abnormal state discrimination accuracy is enhanced.

The invention relates to the technical field of aero-engines, and discloses a labyrinth leakage rate test device and method suitable for low Reynolds number flow, the test device comprises an air inlet section, a labyrinth stator ring, a labyrinth rotor disc, an exhaust section and a flow meter, the tubular rectifier is mainly composed of a plurality of rectification circular tubes which are adjacent to one another. According to the invention, the tubular rectifier is arranged in the exhaust section, the flow leaked by the test labyrinth is rectified by using the tubular rectifier, and then flow measurement is carried out, so that measurement errors caused by airflow rotation and uneven airflow distribution under the condition of low Reynolds number can be inhibited; therefore, the flow measurement accuracy of the leakage airflow under the condition of the low Reynolds number is improved, a labyrinth flow characteristic test under the condition of the low Reynolds number can be conveniently and effectively carried out, labyrinth sealing design and accurate analysis of the leakage rate under the condition of the low Reynolds number are supported, and the problem that an existing labyrinth leakage analysis method is large in error under the condition of the low Reynolds number is avoided.

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 present invention relates to a refrigerant manifold applied to a cooling module applied to a vehicle cooling system. According to the refrigerant manifold of the present invention, by forming a hole or a slit in a middle plate and a housing of parts to which in / out ports are connected or parts to which in / out pipes are connected to discharge a leaked fluid to the outside when leakage occurs inside a manifold, it is possible to increase the accuracy of a leakage test.

The invention belongs to the technical field of battery safety performance detection, particularly relates to leakage testing equipment for an aluminum alloy battery tray, and aims to solve the problems that the position of a leakage point is difficult to quickly and effectively determine after leakage occurs during leakage testing, time needs to be spent on finding the leakage point, and the leakage testing efficiency of the leakage testing equipment is affected. The outer wall of the annular support is fixedly connected with an outer annular plate, the top of the annular support is provided with an annular frame, the annular frame is provided with a leakage test fixed point module, the top of the annular frame is fixedly connected with a fixed support, and the fixed support is provided with a leakage test fixed module. The leakage testing equipment for the aluminum alloy battery tray has the effect of improving the leakage testing operation efficiency, gas is adopted for detection when the leakage testing equipment is used, and when a leakage point is detected, the leakage testing equipment can give an alarm at the position of the leakage point, so that workers can quickly determine the leakage point conveniently, and the using effect of the leakage testing equipment is improved.

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.

The utility model provides an explosion-proof electric leakage test device. The explosion-proof electric leakage test device comprises a junction box, an input assembly and at least two output assemblies, the input assembly comprises an input electric connector, a sensor input terminal and an input resistor; the output assembly comprises an output electric connector, a sensor output terminal and an output resistor; the sensor output terminals of the at least two output assemblies are respectively connected with the sensor input terminals through circuits, and the at least two output assemblies are arranged in parallel; wherein the input electric connector is connected with an external circuit, and the output electric connector is connected with the external circuit or a ground wire; current in an external circuit passes through the input electric connector, the sensor input terminal, the input resistor, the output resistor, the sensor output terminal and the output electric connector and then flows to other external circuits or ground wires so as to carry out an electric leakage test. According to the utility model, by integrating resistors with different resistance values and setting a flexible circuit access mode, the efficiency and the safety of a leakage test are significantly 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 utility model belongs to the technical field of valve test equipment, and particularly relates to a valve leakage test device which comprises a rack, two sealing plates, a liquid inlet pipe, a liquid outlet pipe, a first pressure measuring instrument, a liquid storage tank, a pressurizing mechanism and a second pressure measuring instrument. Two sealing plates are arranged on the rack, the two sealing plates are in sealing connection with a medium inlet and a medium outlet of the valve respectively, a liquid inlet pipe communicated with the medium inlet is arranged on one sealing plate, a liquid outlet pipe communicated with the medium outlet is arranged on the other sealing plate, and a first pressure measuring instrument is arranged on the liquid outlet pipe; a pressurizing chamber is arranged in the liquid storage tank; the pressurizing mechanism comprises an adjusting rod capable of partially entering the pressurizing chamber and an adjusting piece capable of increasing or decreasing the volume of the adjusting rod entering the pressurizing chamber; the second pressure measuring instrument can monitor the pressure of the liquid in the pressurizing chamber; compared with the prior art, when the test device is used for carrying out a leakage test on the valve, the test pressure can be adjusted in a sectional mode, and the sealing performance of the valve can be better evaluated.

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 valve leakage test device, which relates to the technical field of valve quality detection and comprises a first test pipeline, a liquid input pipeline, a gas input pipeline, a first air compression device, a recovery pipeline, a liquid flow test assembly and a gas flow test assembly. The liquid input pipeline is connected with the first test pipeline in an on-off manner; the gas input pipeline is connected with the first test pipeline in an on-off manner; the first air compression device is used for driving liquid or gas to enter the first experiment pipeline; one end of the recovery pipeline is connected with the first test pipeline in an on-off manner, the other end of the recovery pipeline is communicated with the first container, and a driving pump is arranged on the recovery pipeline; the gas flow testing assembly is used for being connected with the other end of the valve to be tested; on the basis that various media can be measured, it is guaranteed that a single medium is used in the measurement process, and the accuracy of a test result is improved.

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 utility model discloses engineering supervision wall surface anti-seepage test equipment, which belongs to the technical field of anti-seepage tests, and is characterized by comprising an inspection base, the bottom of the inspection base is rotatably connected with universal wheels, and the top of the inspection base is movably connected with a drainage mechanism. A water injection mechanism is movably connected to the outer side of the drainage mechanism, an electronic telescopic rod drives a limiting block to slide in a limiting frame, so that the left side and the right side of a test wall can be stamped respectively, uniform stamping tests with various pressures and multiple reverse directions can be conducted on the test wall, and thermal inductance equipment observes the test wall; water on the surface of the wall can be scraped during water injection operation so that the water can fall into a liquid accumulation tank, test water needs to be discharged in time after being stamped, damage to the test wall caused by the fact that the test water stays on the surface of the test wall is prevented, and excessive water is collected and treated, so that the water leakage condition of the wall can be detected. And the water can be discharged or reused.

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 utility model provides a test button, an electric leakage test system and a circuit breaker. The test button comprises an action structure and an operation structure. And the action structure is arranged in the shell of the circuit breaker. The operation structure is connected with the action structure. The shell comprises a first shell face and a second shell face, the first shell face and the second shell face are oppositely arranged in the first direction, and a mounting window is formed in the first shell face. Wherein the first direction is the height direction of the circuit breaker. And the action structure is sleeved in the mounting window, so that the operation structure is positioned outside the shell. A contact surface is arranged on the operating structure, a first distance exists between the contact surface and the second shell surface in the first direction, a second distance exists between the first shell surface and the second shell surface, and the first distance is smaller than the second distance, so that a height difference exists between the contact surface and the first shell surface, and the handle of the circuit breaker is prevented from being damaged when rotating quickly and abutting against the first shell surface. And fingers of an operator, which press the contact surface, are pinched, so that the safety of the test button is improved.

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.

A device for testing the sealing performance of at least a portion of a double-door sealed transmission system between two closed volumes, the system comprising: a first flange and a second flange (18), the first flange and the second flange being capable of being rigidly connected to each other; and a first door body and a second door body (22), the first door body and the second door body typically sealing openings defined by the first flange and the second flange, respectively, the device comprising: a shell (36), the shell comprising a cavity (38) provided with an opening (44); a mechanical connecting member (50) for mechanically connecting to the flange (18) so that the cavity (38) is closed by the flange (18) and the door body (22); and an inflatable pad (48), the inflatable pad being in contact with the flange (18) in an inflated state and ensuring sealing, thereby enabling the sealing performance between the flange (18) and the door body (22) to be checked.

The utility model discloses a cylinder body and cylinder cover bolt hole internal leakage test device, and relates to the technical field of cylinder body leakage test detection. Comprising a fixing frame, a bearing frame is welded and fixed to the bottom of a top plate of the fixing frame, a water tank is arranged below the bearing frame, a high-pressure air pump is installed in the center of the top of the fixing frame, symmetrically-distributed leakage testing mechanisms are connected to the lower portion of the high-pressure air pump, and each leakage testing mechanism comprises an air inlet pipe, a spiral pipe and an air injection head; the heating mechanism comprises a protective shell and an electric heating plate, a sealing mechanism is arranged on the outer side of the air injection head and comprises a sealing block and a sealing air bag, regulation and control mechanisms for controlling the leakage testing mechanism are arranged on the two sides of the high-pressure air pump, and drying mechanisms for drying the cylinder body are arranged on the two sides of the water tank. According to the utility model, the spiral pipe and the heating mechanism are arranged, so that inner leakage testing detection can be carried out on the automobile engine in different temperature environments, the influence of temperature change on the detection result is reduced, and the accuracy and reliability of detection are improved.