551 results about "Leak detection" patented technology

The invention provides a steel shell concrete interface void detection system and method, and relates to the technical field of civil engineering structure health detection, and the system comprises a mobile scanning unit, an excitation unit, an infrared imaging unit, a signal processing and acquisition unit and a comprehensive analysis terminal. The method comprises the following steps: controlling a mobile scanning unit to carry out step-by-step impact excitation and signal acquisition so as to obtain a frequency diagram, and synchronously sampling by using an infrared thermal imager so as to obtain a thermal analysis diagram; and then binarizing the two images respectively, fusing the two images by adopting a noise suppression algorithm to generate a comprehensive image, and judging that the interface is void according to the fused image. According to the method, the high sensitivity of the impact echo method to the layering defect and the accurate description capability of the infrared thermal imaging method to the defect shape are fused, so that nondestructive, efficient and high-precision detection of the steel shell concrete interface void is realized, and the misjudgment and leak detection risks of a single method are effectively reduced.

The invention discloses a heat exchange station leak detection positioning system based on a pressure fluctuation rule, and particularly relates to the field of monitoring positioning, and the system comprises a dynamic site selection module which is used for determining the position of a detection point through multi-pipeline parameter cooperative matching; the working condition self-adaptive module is used for dynamically adjusting a sampling strategy according to the operation load of the heat exchange station; the leakage screening module is used for establishing a leakage judgment threshold value in combination with historical data and real-time working conditions; the propagation velocity correction module is used for analyzing the propagation velocity of the pressure waves by integrating medium and pipeline characteristics; the double-constraint positioning module is used for realizing leakage point positioning by combining time difference and characteristic value double constraints; the closed-loop verification and correction module is used for verifying a positioning result through theoretical verification and actual measurement to realize digital and intelligent management; through the three-dimensional coupling feature extraction and multi-working-condition threshold value dynamic correction method, the limitation of single parameter judgment is avoided, the leakage judgment accuracy is improved, and a scientific basis is provided for operation and maintenance decision making.

The disclosure relates to a leak detection system for a pneumatic braking system of a vehicle. The pneumatic braking system has a control unit, a pneumatic circuit, and an air tank configured to supply pneumatic pressure to the pneumatic circuit. The pneumatic circuit has a plurality of valves configured to be individually controlled by the control unit. The link detection system includes program code configured, when executed by a processor, to individually control the valves of the pneumatic circuit so as to isolate a sub-circuit of the pneumatic circuit. The leak detection module is configured to monitor a pressure in the pneumatic circuit for leaks, wherein the leak detection module detects a leak in the sub-circuit if the pressure decreases while the sub-circuit is isolated.

The invention relates to the technical field of leakage ultrasonic detection, and discloses SF6 gas leakage ultrasonic detection equipment for a GIS pipeline, which comprises a handheld mechanism, a leakage detection mechanism, a switching mechanism and a controller, and is characterized in that the leakage detection mechanism is arranged on the handheld mechanism and comprises a first sensor mounting position and a posture adjusting mechanism; the posture adjusting mechanism is configured to drive the sensor mounted on the first sensor mounting position to perform posture adjustment; the switching mechanism is arranged on the handheld mechanism and comprises a second sensor mounting position; the controller is arranged in the handheld mechanism and is electrically connected with the leak detection mechanism and the switching mechanism; the equipment is at least provided with the ultrasonic micro-leakage fine detection sensor and the ultrasonic global quick scanning sensor, the ultrasonic micro-leakage fine detection sensor and the ultrasonic global quick scanning sensor can be exchanged between the first sensor mounting position of the leakage detection mechanism and the second sensor mounting position of the switching mechanism through the switching mechanism, and the detection efficiency and accuracy are remarkably improved.

The invention provides a camera imaging quality self-checking method and system, electronic equipment, a storage medium and a program product, and aims to solve the problems of leak detection of slow degradation type faults and high false alarm rate of environment change, the method comprises the following steps: acquiring a real-time video stream of a target camera; performing preprocessing to obtain a standardized image sequence; extracting multi-dimensional image quality features of the image sequence; establishing and updating a historical reference feature library of a target camera, wherein the historical reference feature library is constructed by continuously collecting historical image samples shot by the camera in a fixed scene and extracting image quality features of the historical image samples; dynamic difference comparison is carried out on the extracted multi-dimensional image quality features and corresponding historical features, and a degradation index representing the quality degradation degree is calculated; and performing anomaly detection and classification through an analysis model based on the degradation index and the time sequence of the multi-dimensional image quality features. According to the invention, the slow degradation fault can be detected, and false alarms caused by environmental changes are significantly reduced.

The utility model discloses a new energy automobile battery airtightness detection device, which comprises a helium mass spectrometer leak detector body, a convenient moving mechanism and a stabilizing mechanism, one side of the helium mass spectrometer leak detector body is provided with a convenient detection mechanism, the convenient detection mechanism comprises a detection channel, and one side of the detection channel is fixedly connected with a transparent detection box. A reinforcing frame is fixedly connected to the exterior of the transparent detection box, mounting plates are fixedly connected to the two sides of the reinforcing frame, and air cylinders are fixedly mounted on the lower sides of the mounting plates. According to the utility model, through the arrangement of the convenient detection mechanism, after the battery pack is filled with helium, the helium mass spectrometer leak detector body detects the leakage condition of the helium in the transparent detection box, if the battery has a leakage point, the helium can leak out, and the helium mass spectrometer leak detector body can accurately detect the leakage point and judge the airtight performance of the battery according to the detection data; the helium mass spectrum leak detection method can detect tiny leakage, and compared with a differential pressure method, the helium mass spectrum leak detection method has the advantages that the detection precision is greatly improved, and tiny leakage of the battery can be effectively detected.

The invention belongs to the technical field of oil and gas leakage detection and alarm, and particularly relates to a safety valve inner leakage detection prompt sealing gasket and a use method.The safety valve inner leakage detection prompt sealing gasket comprises a sealing washer, a reinforcing ring is embedded in the inner ring of the sealing washer, and a diaphragm piece is fixedly connected to the inner side of the reinforcing ring; the blowing end of the sound production part faces the inner cavity of the safety valve and is used for ensuring that gas from the inner cavity of the safety valve blows the sound production part, and a plurality of cracking grooves are uniformly formed in the diaphragm piece in the radial direction; the safety valve can give a sound alarm when small flow passes through and give a fracture alarm when large flow passes through, can timely discover internal sealing leakage caused by environmental temperature, valve body quality, spring failure, unreasonable adjustment and the like in the production process of the safety valve, especially can timely discover small leakage, provides timely discrimination capability for production abnormity, and improves production efficiency. Production operation and maintenance activities are greatly facilitated, material loss is reduced, production is stable, and the operation and maintenance cost is reduced.

This invention relates to the field of hydraulic equipment technology and provides a method, device, and electronic equipment for detecting oil leaks in a hydraulic system. The method includes: a hydraulic system oil leak detection method, wherein the hydraulic system includes an oil tank, multiple first hydraulic cylinders equipped with displacement sensors, and multiple second hydraulic cylinders without displacement sensors; the method includes: obtaining a first oil volume in the oil tank and the multiple first hydraulic cylinders at a first set time; obtaining a second oil volume in the oil tank and the multiple first hydraulic cylinders at a second set time after the first set time; obtaining a third oil volume, wherein the third oil volume is the sum of the maximum changes in hydraulic oil volume in the multiple second hydraulic cylinders; and comparing the difference between the first oil volume and the second oil volume with the third oil volume to determine whether the hydraulic system is leaking. This ensures accurate and timely detection of oil leaks in the hydraulic system and avoids affecting the normal operation of the hydraulic equipment.

The invention belongs to the field of sealing detection, and particularly relates to an aero-engine lubricating oil system and fuel oil system bearing cavity sealing detection method, which comprises the following steps: in a pressure maintaining stage, performing leakage detection on a detected cavity through an ultrasonic leakage detector within pressure maintaining time, and determining a leakage position; after the pressure maintaining stage is finished, recording pressure change data, comparing the pressure change data with a pressure value at the end of the pressure stabilizing time, judging whether the change value is greater than an allowable value or not, and considering that the sealing performance of the measured cavity is good; and if the pressure change data is greater than the allowable value after the pressure maintaining is finished, determining a leakage point by using an ultrasonic leakage instrument. Qualified inspection criteria are quantified through a direct pressure method airtight detection technology, the reliability of sealing inspection is improved, the sealing inspection capability of a large bearing cavity of a lubricating oil system and a fuel oil system is achieved, acoustic emission and a direct pressure method are combined, the position of a leakage source is rapidly and accurately positioned, the accuracy of leakage position judgment is improved, and the reliability of sealing inspection is improved. And meanwhile, the sealing detection efficiency is improved by more than 90%.

The application provides a steam delivery pipeline leakage detection system, which comprises a metal conducting rod fixedly connected to the outer wall of a steam delivery pipeline, a sensor connected to the metal conducting rod, a signal analyzer electrically connected to the sensor, and a DCS control center electrically connected to the signal analyzer, and the sensor is used for collecting the vibration sound signal of the metal conducting rod. The steam delivery pipeline leakage detection system of the application can accurately and timely determine the leakage and the position of the leakage point by using the metal conducting rod connected to the steam delivery pipeline to transmit the vibration sound generated by the intense friction between the leakage medium and the pipeline wall, and the sound signal is not obviously attenuated in the transmission process due to the solid medium transmission, the transmission distance is long, and the sound signal is not easily interfered by other signals, the false positive rate of the leakage detection is effectively reduced, the operation and maintenance cost of the steam delivery pipeline is significantly reduced, and the industrial safety is improved.

This application relates to a vacuum real-time leak detection system and method for tube bundles in direct air-cooled islands of thermal power plants. The system includes: a leak acoustic wave acquisition module installed at the connection points between the finned tubes of the air-cooled island radiator and the steam distribution pipe, and between the leaking finned tubes of the air-cooled island radiator and the condensate collection pipe, for acquiring acoustic wave signals from the tube bundles of the direct air-cooled island; a signal processing module for amplifying, filtering, and converting the leak acoustic wave signals; a judgment module for comparing the decibel value of the processed acoustic wave signal with a preset threshold; and a leak detection module for determining the leak area of ​​the leaking tube bundle based on the leak status and the address code of the leaking tube bundle. This solves the problems of related technologies, such as complex operation, long processing time, inability to monitor in real time, and difficulty in meeting the needs of continuous operation in thermal power plants.

To provide a shelter that can further reduce the risk of fuel leakage from consumer equipment. [Solution] The fuel tank body 321 has a multi-layer structure including a primary tank 3211 into which fuel is injected, and a secondary tank 3212 that covers the entire primary tank. The discharge section 324 provided at the bottom of the fuel tank body 321 has a double-pipe structure to match its structure. Pipe 37 is connected to the discharge section 324 using flanges 401 and 402. Pipe 37 has a double-pipe structure in which the secondary pipe 372 covers the primary pipe 371 through which the fuel flows. The other end of the secondary pipe 372 is filled with a sealant 375 between it and the primary pipe 371. As a result, the outside of the primary pipe 371 in the area covered by the secondary pipe 372 is isolated.

An apparatus includes a first microphone, a second microphone, and a signal processing circuit. The first microphone is attached to a first location on a hose transporting cooling liquid and is configured to generate a first analog signal. The second microphone is attached to a second location on the hose and is configured to generate a second analog signal. The signal processing circuit is coupled to the first and second microphones and is configured to detect a leak on the hose between the first and second locations based on a correlation signal between the first and second analog signals over a time window. The first and second analog signals represent sound waves caused by the leak and flow of the cooling liquid through the hose at the first and second locations.

This invention provides a liquid leak detection system, including a host computer and detection nodes that are communicatively and electrically connected to the host computer. The host computer sends instructions to the detection nodes and receives detection data transmitted by the detection nodes. Each detection node includes a control system and detection lines; the detection lines include five cables arranged in parallel: the first and second cables are power lines used to supply power to the detection nodes and transmit data; the third cable is a detection wire with a braided sheath; the fourth cable is a rubber conductor with resistance; and the fifth cable is an insulated conductor. The control system includes a controller, a constant current source unit, and a constant voltage source unit electrically connected to the controller. The constant current source unit and the constant voltage source unit can be switched arbitrarily to achieve different detection functions. The liquid leak detection system and method provided by this invention have a simple system structure, long detection distance, high accuracy, and can simultaneously detect multiple areas.

This invention provides a leak detection device for testing containers filled with colored liquids. It includes a vacuum pump unit and a vacuum tank unit connected to the vacuum pump unit. The vacuum tank unit includes a vacuum tank body for creating a vacuum environment. The vacuum tank body also contains the container. The vacuum pump unit extracts air from the vacuum tank body to create a pressure difference between the inside and outside of the container, allowing the device to determine if the container is leaking by observing whether the colored liquid overflows. This design utilizes an automatic control system to maintain a stable negative pressure and pressure holding time within the vacuum tank body to test for leaks, replacing more expensive leak detectors. Furthermore, the device incorporates guide grooves on the fixture to allow for simultaneous testing of multiple products.

A sealing detection device for a power station valve belongs to the technical field of power station valve detection, aims to overcome the defect that ultrasonic leakage detection equipment is difficult to use to perform leakage detection on the surface of a large valve body in the sealing detection process of an existing power station valve, and comprises a bottom support plate, an air tightness test bed, a fixed clamping plate, a sliding clamping plate and an exhaust pipe, the device comprises an air tightness test bench, a fixed clamping plate, a hydraulic push rod and a water tank, and further comprises two ultrasonic leak detection units and an ultrasonic leak detection unit console, the two ultrasonic leak detection units are oppositely arranged on the two sides of the fixed clamping plate, and the ultrasonic leak detection unit console is arranged near the air tightness test bench and connected with the two ultrasonic leak detection units through electric signals. The ultrasonic leak detection unit console is used for controlling the working states of the two ultrasonic leak detection units, and the detection device detects surface leak points of the detected power station valve through the two ultrasonic leak detection units. The device is mainly used for sealing the large-scale power station valve and detecting the leakage point of the valve body.

The present application provides an electronic pressure scanning valve, which integrates pressure sensing output, pressure calibration, pipeline purging and air tightness leak detection functions, aiming to improve the air tightness and maintainability of the pressure monitoring system. The valve is composed of a gas interface end, a gas passage structure, a gas passage control assembly, a pressure sensitive device group, an electronic control assembly, an input / output electrical interface end and a power supply interface end. The electronic control assembly receives external control commands to control the gas passage control assembly to selectively open or close the gas passage, realizing multiple functions. The valve is designed for monitoring air pressure and is installed on the pipeline of the pressure monitoring system. Through precise gas passage control and pressure sensitive devices, the valve ensures high precision and reliability of pressure monitoring. In addition, its integrated design and electronic control mode simplify the operation process and improve the user's operation experience.

The utility model discloses a specification piece quick-change device for vacuum attenuation leak detection equipment and the vacuum attenuation leak detection equipment with the same. The specification piece quick-change device comprises a hollow detection frame, a lifting mechanism, a profiling block and a quick-change component, wherein the bottom end of the detection frame is provided with an opening so as to be hermetically connected with a mounting seat; the lifting mechanism is connected with the detection frame; a limiting groove is formed in the inner wall face of the detection frame, and the quick-change component is used for being retracted into the profiling block under the extrusion action of the inner wall face of the detection frame when the detection frame descends and further used for automatically stretching out to be bounced into the limiting groove to lock the profiling block and the detection frame when the limiting groove is aligned with the quick-change component. Part of the structure of the quick-change component further extends out of the profiling block so as to drive the quick-change component to return into the profiling block under the action of external force. When the quick-changing device is used, operation tools such as a wrench are not needed in the whole copying block specification part changing process, mounting and dismounting operations are simple and quick, the detection efficiency can be greatly improved, and meanwhile the labor intensity of detection personnel is reduced.

The invention discloses an intelligent leak detection monitoring method for a bag-type dust collector. The method comprises the following steps: S1, acquiring detection air; s2, acquiring real-time monitoring data of the concentration of the particulate matters in the detected air; and S3, performing leakage detection and leakage identification on the bag-type dust collector based on the particulate matter concentration real-time monitoring data and a dust concentration anomaly detection algorithm, wherein the leakage identification comprises identification of leakage source features and characterization of leakage positions, devices and systems. The invention further discloses a corresponding device and system, electronic equipment and a computer readable storage medium, the particulate matter concentration at the outlet of each cloth bag is monitored through the low-cost particulate matter concentration acquisition module, data are wirelessly sent to the cloud platform through the console, and then the data are analyzed and processed through a dust concentration anomaly detection algorithm embedded in the cloud platform, so that the dust concentration anomaly detection accuracy is improved. Normal operation conditions of the bag-type dust collector are determined, if abnormity occurs, an operator can rapidly position and overhaul the bag-type dust collector, and a large amount of manpower and material resources are saved.

The embodiment of the present application discloses a refrigerant filling system, which comprises a high-pressure end connector, a low-pressure end connector, a refrigerant filling pipeline, a refrigerant output pipeline, a vacuum pipeline and a control circuit, a high-pressure end vacuum valve is arranged between the high-pressure end connector and the vacuum pipeline, and a positive pressure sensor is arranged on a branch of the vacuum pipeline; when the control circuit receives a first pressure signal sent by the positive pressure sensor in a post-filling leak detection mode, an alarm signal is sent outward. Thus, after filling is completed, the high-pressure end filling valve is closed and the high-pressure end vacuum valve is opened, the detection of whether the high-pressure end filling port leaks can be realized, refrigerant leakage caused by the incomplete sealing of the high-pressure end filling port after filling is prevented, the refrigeration effect of the vehicle air conditioning system is ensured, and the pollution of the leaked refrigerant to the environment is avoided.

The invention relates to a method for leak detection on roofs of a building, comprising the following steps: - defining a location of a monitored roof; - acquiring satellite-based thermal infrared pictures of the location of the monitored roof at a selected surveyance time; - evaluating the satellite-based thermal infrared pictures for leak detection.

According to the new energy air tightness detection method and the detector provided by the invention, the air tightness condition of the battery pack can be accurately evaluated through real-time acquisition and analysis of gas data and combination of air pressure data after inflation and pressure maintaining, and particularly, the method and the detector have high sensitivity to air tightness problems caused by tiny air gaps and micro cracks, so that potential risks are found in advance. The air tightness of the battery pack can be effectively detected in the use process of the battery, and particularly, an accurate detection means is provided for the problems of tiny leakage and fine cracks. Complexity and limitation of a traditional helium leakage detection method can be avoided through comprehensive analysis of leaked liquid gas content and pressure maintaining airtightness data. And secondly, the method can be quickly implemented in the battery maintenance process, accurate maintenance data is provided, and maintenance personnel are helped to judge whether the battery needs to be repaired or replaced or not. Through accurate detection and generated maintenance data, the use safety of the battery can be greatly improved, and battery faults or safety accidents caused by air tightness problems are reduced.

The invention relates to the technical field of pipeline detection, in particular to an underground pipeline leakage point detection method and system based on artificial intelligence. Firstly, a sensor assembly is arranged in a to-be-detected area; the host acquires a sound signal and a soil humidity value; respectively carrying out noise reduction processing to obtain sound feature vectors, and carrying out smoothing processing to obtain humidity feature vectors; carrying out feature fusion on the sound feature vector, the humidity feature vector and the space coordinates of the corresponding sensor groups to construct a multi-dimensional input sample; constructing and training an artificial intelligence leakage point pre-estimation model based on dual-channel convolution and an attention mechanism, and obtaining an output leakage point pre-estimation coordinate of the to-be-detected pipeline based on the multi-dimensional input sample and the trained artificial intelligence leakage point pre-estimation model; compared with the prior art, dual-source data fusion of the pickup and the humidity sensor is adopted, the problem that a single signal is prone to interference is solved, and therefore the positioning precision is improved.

This invention provides an automatic electronic leak detection system and a leak detection method for refrigeration appliances, belonging to the field of refrigeration equipment testing technology. The system includes a first conveyor line for transporting refrigeration appliances, a leak detection box, and a handling device. A leak detection station is provided on the first conveyor line, and the leak detection box can be placed on the refrigeration appliance. The handling device is used to place the leak detection box on the refrigeration appliance or remove the leak detection box from the refrigeration appliance. When the refrigeration appliance with the leak detection box passes the leak detection station, it is automatically leak-tested. The leak detection method includes the following steps: transporting the refrigeration appliance; placing the leak detection box on the refrigeration appliance; transporting the refrigeration appliance with the leak detection box to the leak detection station for leak detection; after leak detection is completed, removing the leak detection box and sending the refrigeration appliance to the next process. This leak detection system automates leak detection of refrigeration appliances, overcoming the shortcomings of manual leak detection which is prone to missed detections, effectively improving the leak detection efficiency of refrigeration appliances and ensuring the reliability of the leak detection results.

The application discloses a water supply pipeline leakage detection method based on limited samples, comprising: acquiring a water supply pipeline vibration signal and constructing a training data set; performing time-frequency transformation on the vibration signal, performing adaptive frequency band division based on random characteristic energy spectrum and maximum peak envelope segmentation of scale space representation, and applying continuous soft attenuation weight to obtain enhanced time-frequency features; generating a synthetic sample by using an improved denoising diffusion generative adversarial network to expand the training data set; constructing a multi-view contrast learning framework, including a time sequence feature extraction branch and a time-frequency feature extraction branch, performing self-supervised pre-training by using unlabeled samples, and jointly optimizing a time sequence contrast loss, a time-frequency contrast loss and a time sequence-time frequency consistency loss; fine-tuning the pre-training network by using labeled samples to obtain a leakage detection classification model; and inputting a signal to be detected into the model to output a leakage detection result. The application realizes high-precision and strong-robustness leakage detection under the conditions of strong noise, small samples and label scarcity.

This utility model belongs to the field of sealing and leak detection technology, specifically disclosing a sealing and leak detection device using a tracer liquid test method. It includes a barrel and a top cover. Several connecting components are arranged on the side of the barrel, and an adjusting component that cooperates with the connecting components is arranged on the side of the top cover. A sealing groove is formed below the top cover, and a sealing strip is connected within the sealing groove. A digital pressure gauge, an inlet / outlet valve assembly, a safety valve, and handles are installed on the top cover. The digital pressure gauge and the inlet / outlet valve assembly are located near the side of the top cover, and the safety valve is located near the center of the top cover. Handles are symmetrically arranged on both sides of the safety valve. The adjusting component connects to the connecting components, and the distance between the top cover and the barrel is adjusted by the adjusting component. This allows the top cover and the barrel to compress the sealing strip, thereby adjusting the sealing performance. The inlet / outlet valve assembly allows for air intake and exhaust. The safety valve automatically opens to release pressure when the pressure inside the barrel exceeds a set pressure, ensuring system safety.

This utility model discloses a leak detection device, a water-cooled radiator, and a computer, relating to the technical field of leak detection. The leak detection device includes a mounting base, a movable component, an elastic component, and a detection component. The mounting base has a sliding cavity, and the movable component slides within the sliding cavity and is sealed to the mounting base, dividing the sliding cavity into a first cavity and a second cavity. The first cavity is used to connect to the water path to be detected. The elastic component is located between the mounting base and the movable component, elastically connected to the mounting base. The detection component is mounted on the mounting base and located at the opening of the second cavity. When the movable component and the detection component are spaced apart, the detection component detects the displacement of the movable component to detect leaks in the water path. When the movable component contacts the detection component, the detection component detects the pressure exerted by the movable component on the detection component to detect leaks in the water path. The technical solution provided by this utility model improves the comprehensiveness of the leak detection device.

The utility model relates to a new energy vehicle-mounted battery package box cover leak detection clamp, including frame, the platform on the frame upper end sets up the sealing station, the air inlet hole is set up in the middle part of sealing station, four groups of corner air cylinders, four groups of corner air cylinders distribute in sealing station four around and fix on the platform, the hole plugging subassembly, the hole plugging subassembly is suitable for inserting the air hole of box cover, a pair of guide rail beams, two guide rail beams are located sealing station both sides, the pressing plate subassembly, the pressing plate subassembly both sides are provided lifting subassembly respectively, the lifting subassembly lower extreme with guide rail beam passes through guide rail pair and forms the sliding fit, the lifting subassembly does the sliding on guide rail beam through guide rail pair, thereby drives the pressing plate subassembly and removes to sealing station top, the lifting subassembly drives the pressing plate subassembly and does the lifting movement on sealing station top. Through the pressing plate subassembly can to the box cover of quick stable removal to sealing station top and sealing station can carry out the pressure hold, make it can stably carry out leak detection detection.

The application relates to a millimeter wave airtightness leak detection device, belonging to the technical field of millimeter wave device detection, which comprises a spraying water tank, a first conveyor and a second conveyor, the first conveyor and the second conveyor are connected with the spraying water tank, a grabbing assembly for grabbing the millimeter wave radar conveyed from the first conveyor is arranged at the top of the spraying tank, a conveying assembly for conveying the millimeter wave radar into the spraying water tank is arranged in the spraying water tank, and the spraying water tank is connected with a detection assembly for detecting the airtightness of the millimeter wave radar. The application has the effect of automatically performing batch airtightness detection on the produced millimeter wave radar.