42results about How to "Improve leak detection efficiency" patented technology

The invention relates to the technical field of pipeline leakage detection, in particular to a pipeline leakage detection method based on an improved YOLOv7 model, and the method comprises the steps: obtaining an initial image of the surface of a leaked pipeline; performing sharpening processing on the image based on an ESRGAN strategy to obtain a current image; and inputting the current image into a pre-trained improved YOLOv7 model. According to the pipeline leakage detection method based on the improved YOLOv7 model, a backbone network in the existing YOLOv7 is replaced by the ShuffleNet network, the head network comprising the Pconv module is combined, and the attention unit is added, so that on the premise of keeping the detection precision, the data processing amount of the model is reduced, the data processing efficiency is improved, and the detection efficiency is improved. And the pipeline leakage detection efficiency is improved.

The invention belongs to the technical field of welding seam detection, and particularly relates to a welding seam detection device for a magnetic levitation traffic low-vacuum pipeline, which is characterized in that a helium mass spectrum leakage detection structure is arranged on the outer side of the vacuum pipeline, a helium inflation structure is arranged on the inner side of the vacuum pipeline, and a rolling structure is arranged at the bottom end of the vacuum pipeline and comprises a third base; supports are symmetrically fixed to the two sides of the top face of the third base, V-shaped frames are hinged to each support in a bilateral symmetry mode, rollers are connected between the ends of the two V-shaped frames, the two ends of a rotating shaft of each roller penetrate through the two V-shaped frames respectively and are rotationally connected with the contact positions of the two V-shaped frames, one end of each roller penetrates through the corresponding V-shaped frame and is fixedly provided with a first gear, and protective covers are fixed to the end faces of the V-shaped frames; a gear motor is fixedly installed on the outer end face of the protective cover, an output shaft of the gear motor penetrates through the protective cover to fix a second gear, the second gear is meshed with the first gear, and the two rolling structures are arranged in a mirror symmetry mode. The device does not need to lay a leak detection tool around a welding seam, facilitates leak detection, improves leak detection efficiency, and improves leak detection accuracy.

The invention discloses a chemical pipeline automatic inspection device with a leakage point checking function, and relates to the technical field of pipeline inspection, the chemical pipeline automatic inspection device comprises a machine body, two sliding groups are arranged on the side wall of the machine body, a hydraulic cylinder is arranged in the inner wall of the machine body, a push rod of the hydraulic cylinder is connected with the sliding groups, and a cleaning assembly is arranged on one side of the machine body. A detection assembly is arranged between the two sliding groups; a machine body is placed in a pipeline, then a hydraulic cylinder is controlled to be started, a push rod of the hydraulic cylinder drives two sliding sets to synchronously move, the sliding sets move towards the side away from the machine body till the sliding sets make contact with the inner wall of the pipeline, then a controller controls the sliding sets to move, the sliding sets drive the machine body to move along the pipeline, and in the machine body moving process, the machine body moves. The cleaning assembly is used for cleaning the inner wall of the pipeline, and then the detection assembly is used for detecting the cleaned inner wall of the pipeline, so that leakage points on the surface of the pipeline are checked, and the detection efficiency of the leakage points of the pipeline is improved.

The invention discloses a leak detection test system for a cabin door sealing element. The leak detection test system comprises a visual sealing box, a gas supply mechanism, a temperature control system, a helium mass spectrometer and a DIC test system, an adjustable clamp used for fixing a sealing piece is installed in the visual sealing box, a loading head is installed in the visual sealing box and abuts against the sealing piece, and an inner cavity of the visual sealing box is divided into a high-pressure cabin and a low-pressure cabin by the loading head and the sealing piece; the air supply mechanism communicates with the hyperbaric cabin through a pipeline and is used for adjusting the air pressure of the hyperbaric cabin; the temperature control system is used for adjusting the temperature of the hyperbaric cabin; the helium mass spectrometer is communicated with the low-pressure cabin; and the D IC test system is used for capturing and analyzing the deformation condition of the sealing element. According to the invention, the deformation condition of the sealing element under different temperature and pressure conditions can be captured and analyzed, the sealing performance of the sealing element can be accurately evaluated, and the leak detection efficiency and accuracy of the sealing element are improved by comprehensively applying multiple technical means, so that the detection is more comprehensive and reliable.

The invention discloses beverage bottle sealing performance detection equipment, and belongs to the technical field of beverage bottle sealing performance detection. A beverage bottle sealing performance detection device comprises a base and a detection cylinder fixedly installed on the inner bottom face of the base, and a sealing opening is formed in the middle of the surface of the top end of the detection cylinder. According to the sealing performance detection equipment of the beverage bottle, when the beverage bottle body is put into the detection cylinder through the sealing opening and is immersed in water, the sealing plug and the sealing opening are matched and sealed, the pressure is detected according to the sealing performance of the beverage bottle body, and air in the detection cylinder is exhausted through work of the air extracting pump; the detector works to detect the sealing performance of the beverage bottle body, the overall sealing performance of the beverage bottle body is judged according to whether bubbles are generated in water in the detection cylinder or not of the beverage bottle body, compared with the prior art, the equipment enables the sealing performance detection process of the beverage bottle body to be simple and convenient, and then the efficiency of beverage bottle sealing performance detection is improved.

The utility model discloses a waterproof and moistureproof DC screen detection device comprising a detection cabinet, and a first conveying pipe is communicated with a first spray head; through the design of structures such as a water pump, a first conveying pipe, a first spraying head, a second conveying pipe and a second spraying head, feeding and discharging can be conveniently conducted on a direct current screen shell through a moving mechanism, and through cooperation of the water pump, the first conveying pipe and the second conveying pipe, water can be conveyed to the first spraying head and the second spraying head; water can be sprayed to the direct-current screen shell through the first spraying head and the second spraying head, the direct-current screen shell is sprayed, so that the sealing effect of the direct-current screen shell can be detected, the direction of the direct-current screen shell can be rotationally adjusted through the adjusting mechanism, and therefore the direct-current screen shell can be sprayed in multiple directions; according to the utility model, the sealing performance of the direct-current screen shell can be conveniently detected, and the efficiency of detecting the sealing performance of the direct-current screen shell can be improved.

The invention relates to the technical field of boiler pressure vessel detection, in particular to an ultrahigh pressure vessel plug body sealing test detection device, and aims to efficiently detect and ensure the sealing performance of a pressure vessel sealing plug body. The sealing performance of the sealing plug body is accurately tested, and the safety of the container is ensured.

The application discloses a water supply network sensor optimization arrangement method based on graph signal processing, and comprises the following steps: acquiring topological structure information of a water supply network, and establishing a user node weighted graph without direction and connection according to the topological structure information to determine a self-correlation localized graph information value of each user node and a cross-correlation graph information redundancy value between different user nodes; wherein the self-correlation localized graph information value of the user node is: the user node v i The cross-correlation graph information redundancy value between the user nodes v j According to the self-correlation localized graph information value of the user node and the cross-correlation graph information redundancy value between different user nodes, a target function is determined: user nodes meeting the target function are screened out as sensor nodes one by one until the number of sensors reaches the requirement.

The utility model provides a high-efficiency gas-liquid mixing stirrer, belongs to the technical field of biodegradable material production, and aims to solve the problem that the air pressure balance in a stirring tank is easily influenced as a driving motor and the stirring tank are mostly sealed through a sealing bearing and are not found in time in the conventional gas-liquid mixing stirrer. Comprising a stirring tank body, the driving motor is fixedly mounted at the upper part of the stirring tank body; the driving rotating shaft is rotationally connected to the interior of the stirring tank body, and the driving rotating shaft is mounted in the driving motor; the sealing bearing is fixedly mounted at the top of the stirring tank body; the sealing monitor is fixedly mounted at the top of the sealing bearing; the mixing assembly is arranged in the stirring tank body; and the warning assembly is arranged on the outer side of the driving rotating shaft. The device has the advantages of efficient mixing, convenience in use, timely warning and the like.

The utility model relates to the technical field of sealing detection devices, and discloses a double one-way valve sealing detection device, which comprises a supporting assembly, a supporting table, a supporting piece and an emulsion pump, the supporting piece is arranged at the top of the supporting table, and the emulsion pump is positioned on the supporting piece; the detection assembly is arranged on the supporting piece and comprises a clamping piece, a driving piece and a detection piece, the clamping piece is arranged in the supporting piece, the driving piece is located on one side of the supporting piece, and the detection piece is arranged at the top of the supporting piece. The beneficial effects of the utility model are that through the arrangement of the detection assembly, the emulsion pump can be automatically clamped and connected, and after the detection is completed, the clamping and connection of the emulsion pump can be automatically released, so that the efficiency of detecting the sealing performance of the double one-way valve is greatly improved.

The invention relates to the technical field of aero-engine oil pipeline detection, in particular to an aero-engine oil pipeline leakage detection device and a detection method. An engine oil pipeline is sleeved with a film pipe, so that a sealing cavity is formed between the film pipe and the oil pipeline, and the pressure change in the sealing cavity is detected through a pressure sensor; whether the oil pipeline leaks or not is detected, and the problem that the change of pressure in the pipeline cannot be monitored in time due to the fact that a sensor inlet is blocked by aviation oil can be avoided. The pressure in the sealing cavity is slightly lower than the pressure in the oil conveying pipe, so that tiny leakage can cause obvious pressure change in the sealing cavity, and the detection sensitivity and the detection efficiency of the sensor are improved. And meanwhile, the pressure sensor and the temperature sensor are adopted to detect pressure and temperature respectively, and a temperature compensation method is adopted to eliminate the influence of temperature change on the pressure in the sealing cavity, so that missing report and false report caused by temperature change are avoided, and the accuracy of leakage detection is improved.

The present invention discloses a vibration sealing detection device for automobile water pumps, which relates to the technical field of sealing detection, and solves the problem that it is difficult to simulate the situation after the water pump is installed and used when detecting the automobile water pump, and the accuracy of the water pump sealing detection is low. The automobile water pump vibration sealing detection device includes an equipment platform, an integrated circulation detection mechanism, a screw assembly component, a control terminal and an automobile water pump body. The top of the equipment platform is equipped with an integrated circulation detection mechanism, and the top of the integrated circulation detection mechanism is provided with multiple groups of automobile water pump bodies, and the automobile water pump body is fixed on the top of the integrated circulation detection mechanism by the screw assembly component. In the present invention, the state of the automobile water pump body installed in an electric vehicle and the electric vehicle is in driving and vibrating can be simulated, and the state of the automobile water pump in actual operation can also be simulated to improve the accuracy of the sealing detection of the automobile water pump body.

The utility model provides a fire-fighting gas cylinder leak detection device which comprises a water storage tank, a rectangular opening is formed in the lower portion of one side face of the water storage tank, a water storage tank is arranged on the outer side of the rectangular opening, the cross section of the water storage tank is rectangular, the face, close to the water storage tank, of the water storage tank is open, and the open end of the water storage tank is fixedly connected with the water storage tank. A water storage tank is arranged in the water storage tank, a rubber plug is installed in the water storage tank in a sliding mode, an electric push rod which is horizontally arranged is installed on the face, away from the water storage tank, of the water storage tank, and the movable end of the electric push rod extends into the water storage tank and is fixedly connected with the rubber plug. And the leak detection efficiency of the fire-fighting gas cylinder is improved.

This invention relates to a leak detection method for large circuit breakers. First, the components constituting the large circuit breaker, including the poles, base, and operating mechanism, are assembled on a pallet. Then, the entire pallet is transported to a dedicated bagging system for bagging. The poles are bagged using the dedicated bagging system. The large circuit breaker is then wired to the pallet, and the pallet is wired to a break-in device. The break-in device begins operation to test for SF6 gas leakage during the operation of the large circuit breaker. The SF6 content in the gas inside the PE sealed bag is detected to determine if a leak has occurred. This leak detection method, using a dedicated bagging system, achieves automated bagging of the large circuit breaker, eliminating the need for manual top-down bagging of the poles, significantly reducing manual labor and eliminating the need for manual climbing, thus preventing safety accidents.

The utility model discloses a feeding pump leakage collection alarm device which comprises a collection disc, calibration columns, a leakage liquid collection box, a liquid level metering part and a control part, the collection disc is arranged below a feeding pump, the feeding end and the discharging end of the feeding pump are respectively provided with a feeding pipeline and a material conveying pipeline, the calibration columns are installed on the material conveying pipeline in parallel, and the liquid level metering part is connected with the liquid level metering part. A liquid inlet of the leakage liquid collecting box is communicated with the collecting disc through a collecting pipeline, the liquid outlet end of the leakage liquid collecting box is communicated with the adding pump through a liquid conveying pipeline, a first control valve is installed on the liquid conveying pipeline, a breathing pipeline is arranged on the leakage liquid collecting box, the liquid level metering part is installed on the leakage liquid collecting box, and a liquid level alarm module is arranged in the liquid level metering part. The control piece is electrically connected with the first control valve, the calibration column, the feeding pump and the liquid level alarm module. According to the utility model, through the automatic monitoring and sensor technology, the collecting disc, the leaked liquid collecting box and the first control valve are matched, so that the leakage treatment efficiency and safety are improved, and meanwhile, the raw material waste and the environmental pollution are reduced.

This invention discloses an online troubleshooting method for radiant tubes in a cold rolling annealing furnace. It involves collecting and establishing a baseline dataset of CO, CO2, and O2 concentrations in each layer of flue gas branch pipes under normal production conditions. During normal furnace operation, the CO concentration ai1 in each layer of flue gas branch pipes is monitored in real time. When the CO concentration ai1 in the i-th layer of flue gas branch pipe exceeds the baseline range, a troubleshooting mechanism is triggered. The operating status of each radiant tube in the i-th layer is retrieved and monitored, and the dynamic response of the CO concentration in that layer of flue gas branch pipe is monitored simultaneously. Step S4: Multiple rounds of iterative troubleshooting are repeated to confirm all faulty radiant tubes and shut them down. Subsequently, it is verified whether the flue gas composition has returned to the baseline range. This method solves the technical problems of existing technologies, such as the need for machine shutdown for radiant tube leak detection, high reliance on manual labor, and high misjudgment rate.

This utility model relates to the technical field of positioning devices, and discloses a positioning device for detecting leaks in drainage pipe networks. It includes a mounting sleeve with rollers evenly rotatably connected around its central perimeter. Sensors are evenly fixedly connected to the front side of the inner wall of the mounting sleeve. Connecting blocks are fixedly connected to the upper and lower sides of the front side of the mounting sleeve, and connecting ropes are fixedly connected to the front of the connecting blocks. A traction component is provided at the end of the connecting rope away from the connecting blocks for traction of the mounting sleeve. A marking component is provided on the upper rear side of the inner wall of the mounting sleeve for marking the location of leaks in the drainage pipe network. In this utility model, through the cooperation of structures such as the throttle, connecting plate, connecting rod, connecting rope, connecting block, mounting sleeve, sensor, metering valve, storage box, and discharge pipe, the positioning device for detecting leaks in drainage pipe networks can automatically mark the location of leaks, improving the efficiency of leak detection.

The invention relates to the technical field of constructional engineering detection, in particular to an intelligent detection device for fabricated constructional engineering. Comprising a fixing plate; a detection mechanism is arranged on the fixed plate, the detection mechanism comprises a telescopic air cylinder, a pressing plate, a limiting column and a supporting plate, an adjusting part capable of adjusting the detection range is arranged on the supporting plate, adsorption parts are arranged on the supporting plate and the adjusting part, and a sealing part is arranged between the supporting plate and the adjusting part; according to the invention, the detection range of the detection mechanism is adjusted through the adjusting part so as to cope with prefabricated thermal insulation external wall panels with different heights, the efficiency of sealing performance detection of the joint of the prefabricated thermal insulation external wall panels is improved, and the sealing performance of a closed space formed by the detection mechanism and the prefabricated thermal insulation external wall panels is ensured through the sealing part and the adsorption part. Therefore, the accuracy of sealing performance detection at the joint of the prefabricated thermal insulation external wall panel is ensured.

The utility model relates to a straight type three-way multifunctional leak detection device, and belongs to the technical field of pipe body detection, the straight type three-way multifunctional leak detection device comprises a water tank, a lifting platform and a clamping and pressurizing mechanism are arranged in the water tank, the clamping and pressurizing mechanism is arranged at the top of the lifting platform, and the clamping and pressurizing mechanism comprises a left side clamping assembly, a right side clamping assembly and a top pressurizing assembly. The left side clamping assembly, the right side clamping assembly and the top pressurizing assembly are arranged, the first pressing pipe and the second pressing pipe are each internally provided with a plurality of annular steps matched with the straight tee joint in specification, and the straight tee joint leakage detection device can be suitable for leakage detection of straight tee joints of different specifications; and the positioning block is arranged, and the positioning block is internally provided with the positioning groove and the guide groove, so that a worker can be assisted to place the straight tee joint, and the leakage detection efficiency is also greatly improved.

The present invention discloses an intelligent monitoring method for water supply network leakage based on drone vision and voiceprint analysis, which belongs to the field of intelligent monitoring technology, including obtaining characteristic data and attribute data of a water supply pipeline to be inspected, and connecting the characteristic data and attribute data to a geographic information system integrated with a water supply pipeline map; performing optimal path planning according to the characteristic data and attribute data; enabling the drone to inspect according to the optimal path, so that the drone collects pipeline laying pavement video data and audio signals of the water supply pipeline to be inspected during the inspection process; processing and analyzing the pipeline laying pavement video data and audio signals based on a multi-scale hybrid attention network and a pipeline acoustic detection network, and obtaining the location information of the water supply network leakage. The present invention uses drone vision recognition technology and voiceprint analysis technology to solve the problem of low efficiency of pipeline network leakage monitoring faced by urban water supply systems.

The utility model relates to the field of medical instruments, and discloses a separation bag leak detection device of a stem cell separator. The assembling part is mounted at the bottom of the testing part; the separation bag is connected with the assembly part, and an infusion tube is arranged on the separation bag; wherein the assembling part comprises a mounting groove, a connecting part and a connecting part, and the mounting groove is formed in the bottom of the assembling part; the connecting pipe is mounted in the mounting groove, and the liquid conveying pipe is arranged in the mounting groove and connected with the connecting pipe. According to the utility model, by adopting the design that the sealing pieces are in close contact with the inner wall of the infusion tube, good sealing performance at the joint is ensured, the plurality of sealing pieces can be adapted to different separation bags, and the clamping head can flexibly adjust the clamping position according to requirements so as to adapt to infusion tubes with different specifications, so that the universality of the device is enhanced, and the use is convenient. Therefore, the leak detection device can be suitable for more types of separation bags.

The invention relates to the technical field of leakage detection structures of freezing dryer evaporators, in particular to a leakage detection structure of a freezing dryer evaporator, which comprises a freezing dryer case, an evaporator group is arranged in the freezing dryer case, the evaporator group comprises a compressor, and a pipeline interface of the compressor is connected with an evaporation pipe. Soap is cut into slices, the slices are soaked in warm water to be dissolved into thick liquid soap, the liquid soap is poured into a second liquid storage cylinder and a first liquid storage cylinder, the liquid soap in the first liquid storage cylinder and the second liquid storage cylinder permeates a first sponge block and a second sponge block through a pipeline, a movable block moves in a guide groove of a hanging plate, and the second sponge block and the second sponge block are hung on the hanging plate. The first sponge block and the second sponge block are used for wiping the surface of the evaporation pipe, liquid soap is evenly smeared on the surface of the evaporation pipe, when leakage occurs on the surface of the evaporation pipe, leaked gas impacts the liquid soap, bubbles can be formed on the surface of the liquid soap, then the leakage position is found quickly, and convenience of leakage detection of the evaporation pipe is guaranteed.

The utility model discloses a leakage detection device for a secondary battery. The secondary battery leak detection device comprises a plurality of pressure containers, vacuumizing equipment, a leak detector and a leak marking piece, the plurality of pressure containers are connected in parallel, each pressure container is provided with a cavity, and the cavity is configured to contain a secondary battery; the vacuumizing equipment is communicated with the plurality of cavities; the leak detector is communicated with the plurality of cavities; and the leakage marking piece is communicated with the cavity. According to the secondary battery leak detection device, the leak rate detection of the secondary battery can be more accurate, and the situation that the secondary battery with the qualified leak rate is misjudged to be unqualified due to inaccurate detection of the leak rate value of the secondary battery is effectively prevented.

The invention relates to the field of image generation material mapping, and discloses a power consumption and electromagnetic signal combined AES cipher chip leakage detection method, which comprises the following steps: S1, a signal expansion module, S2, a signal fusion module, and S3, a leakage detection module. According to the method, the purpose of increasing signals is achieved by generating new power consumption or electromagnetic signals through the diffusion model, and the signal-to-noise ratio is improved through signal decomposition and fusion, so that the method still has better detection performance on the premise of smaller sample data, for example, for an AES algorithm implemented on an MCU, the detection efficiency is greatly improved. According to the technology, leakage points can be detected only by more than 3000 samples, however, the leakage points can be detected only by more than 10000 samples in an existing method, the measurement complexity is reduced, and more leakage feature points which cannot be found only through single-channel leakage detection are found by combining data of multiple signal sources and utilizing complementary information of the data.

The refrigerant aerosol can leak detection device comprises a bottom plate, a frame is fixedly installed on the top of one side of the bottom plate, a transparent water tank is fixedly installed on the top of the bottom plate and located on one side of the frame, a connecting ring is rotatably connected to an inner cavity of the frame, and a driving motor is fixedly installed on one side of the frame. Through the arrangement of the driving motor and the multi-station pneumatic rotating joint, a plurality of refrigerant aerosol cans are sequentially communicated with the charging connector on the connecting ring through the fixing assembly, air is injected into the refrigerant aerosol cans through the multi-station pneumatic rotating joint, and an output shaft of the driving motor drives the connecting ring to rotate slowly; the refrigerant aerosol cans filled with gas are sequentially and slowly sunk into the transparent water tank, so that leakage detection is sequentially carried out on the refrigerant aerosol cans, and the leakage detection efficiency of the refrigerant aerosol cans is improved.

The invention relates to the technical field of scanning electron microscopes, and discloses a scanning electron microscope assembly leak detection tool, which is characterized in that a vacuum chamber is arranged in a tool body, and a plurality of interfaces are arranged on the tool body; the plurality of interfaces are communicated with the vacuum chamber; the plurality of to-be-tested scanning electron microscope assemblies are respectively connected with the plurality of interfaces; the leak detector is communicated with the vacuum chamber; and when the leak detector is started, the gas injection structure injects test gas into the joint of the to-be-detected scanning electron microscope assembly and the interface, and a leak rate value displayed on the leak detector is smaller than a leak rate set value, the leak rate of the current to-be-detected scanning electron microscope assembly is judged to be qualified, and otherwise, the leak rate of the current to-be-detected scanning electron microscope assembly is judged to be unqualified. According to the technical scheme, the leak detection efficiency is remarkably improved; compared with an automatic leak detection tool, the leak detection tool has the advantages that the structure is simpler, the operation is easier, and the cost is lower.

According to the leakage-proof detection mechanism provided by the utility model, the first magnetic core sensor, the second magnetic core sensor, the bushing sensor and the leakage-proof detection center console are arranged, and the first magnetic core sensor and the second magnetic core sensor are both used for detecting the existence of a magnetic ring of a plastic product to be detected; the lining sensor is used for detecting existence of a lining insert of a plastic product to be detected, the leakage-proof detection center console is used for controlling work of the first magnetic core sensor, the second magnetic core sensor and the lining sensor, and the leakage-proof detection center console is in communication connection with the first magnetic core sensor, the second magnetic core sensor and the lining sensor. The first magnetic core sensor and the second magnetic core sensor are oppositely arranged and parallelly located on one side of the leakage-proof detection center console, and the bushing sensor is located on one side of the leakage-proof detection center console, so that induction detection can be accurately performed on a bushing insert and a magnetic ring of a plastic product, the leakage-proof detection efficiency is improved, the leakage detection risk is reduced, and the detection efficiency is improved. And the leakage-proof detection cost is reduced.

The invention relates to an inflatable food package leak detection device, which comprises a base frame, and a sample placement table, a lifting mechanism, a leak detection cavity and a control cabinet which are arranged on the base frame, the leakage detection cavity comprises a cavity body, the bottom of the cavity body is an open end, the open end is in sealing connection with a flexible corrugated rubber ring, and the flexible corrugated rubber ring is used for being in sealing fit with the sealing ring of the storage groove, so that the cavity body forms a sealed cavity body; a shell of the cavity is of a double-layer structure and comprises a hard outer shell and a porous inner shell, and an air exhaust channel is formed between the hard outer shell and the porous inner shell; a sealing adapter and a one-way gulp valve are arranged at the top of the cavity, and the sealing adapter communicates with the air exhaust channel and is used for being connected with a vacuum pump; the one-way gulp valve is communicated with the exhaust channel and is used for supplementing air; a pressure sensor and a gas sensor are arranged on the inner side wall of the hard shell, the pressure sensor is used for detecting the pressure in the cavity, and the gas sensor is used for detecting whether gas in the inflatable food package to be detected exists in the cavity or not. According to the invention, nondestructive food package leak detection is realized.

The utility model relates to the technical field of tunnel oven filter detection, in particular to a tunnel oven high-efficiency filter leak detection device, which comprises a longitudinal movement structure, a transverse movement structure, a particle counter and a mounting bracket, the longitudinal movement structure is arranged in the longitudinal direction. The transverse movement structure is transversely arranged on the longitudinal movement structure, and the longitudinal movement structure drives the transverse movement structure to move longitudinally; the particle counter is provided with a scanning head, the scanning head is installed on the transverse movement structure and moves along with the transverse movement structure, and the scanning head is connected with the particle counter in a wired or wireless mode and used for detecting the leakage condition. And the mounting bracket is fixed on the lower surface of the longitudinal movement structure and is adjustable in height. The utility model provides a high-efficiency and automatic leak detection device, which effectively improves leak detection efficiency, reduces manual operation, saves time and manpower resources, and is suitable for tunnel drying ovens in sterile medicine production and other occasions requiring leak detection of high-efficiency filters.