108results about "Fluid-tightness measurement" patented technology

This utility model relates to the field of electronic water pump technology, specifically to a testing device for automotive electronic water pumps. The testing device includes an outer frame and a water pump. The outer frame is rotatably connected to a fixed cover via an electric push rod. Both the fixed cover and the outer frame are rotatably connected to the water pump. The fixed cover is threadedly connected to a fixing assembly via a screw rod. The fixing assembly is in close contact with the water pump. The fixing assembly includes several limiting plates evenly distributed inside the fixed cover, with one end of each limiting plate rotatably connected to the screw rod. The advantages of this utility model are: the fixing assembly can fix water pumps of different shapes horizontally, and the buffer plate and fixing frame can fix and limit the water pump vertically, while facilitating rotation. At this time, the water pump is fixed and cannot move, but it can be rotated during testing, thus facilitating testing and observation.

This invention provides a valve internal leakage diagnostic device, including a valve body, a hollow support base integrally connected to the middle of the valve body, an internal sealing assembly inside the hollow support base, a rotating handwheel connected to the top of the internal sealing assembly, pipes connected to both sides of the valve body, flanges connected to the ends of the pipes, four sets of mounting holes evenly distributed on the flanges, an adjustable support assembly fitted on the outer wall of the pipes, and an internal leakage detection assembly connected to the side of the adjustable support assembly facing the outer wall of the pipes. This invention has the following advantages: its simple structure eliminates the need to disassemble the valve for inspection, and it can be directly installed outside the valve body, enabling the inspection of a large number of valves, thus avoiding the problem of some valves having internal leaks that are difficult to detect and thus causing leakage.

This utility model discloses a pressure testing fixture for a sealing component, including a pressure testing bracket. A bearing sleeve is fixedly connected to the inner wall of the pressure testing bracket, and a main shaft is fixedly connected to the inner ring of the bearing sleeve. A support sleeve is fixedly connected to the inner wall of the pressure testing bracket. A hinge seat is fixedly connected to the right end of the pressure testing bracket, and a sealing bushing is fixedly connected to the inner wall of the hinge seat. A shaft is fixedly connected to the inner wall of the sealing bushing, and a mechanical seal outer sleeve is fitted onto the outer surface of the sealing bushing. The left end of the mechanical seal outer sleeve is fixedly connected to the right end of the hinge seat, and a fastening nut is threaded onto the outer surface of the right end of the shaft. This utility model, through the configuration of the pressure testing bracket, bearing sleeve, main shaft, support bearing, sealing bushing, hinge seat, mechanical seal outer sleeve, and fastening nut, allows for tightening and positioning of the shaft by tightening the fastening nut, achieving compressive contact between the shaft and the main shaft, increasing the compressive force between the main shaft and the shaft, and achieving the sealing effect of the sealing component during compression, thus facilitating pressure testing of the sealing component.

The present invention provides a fluid component body having a leak test passage. [Solution] To test for leaks passing through each valve body seal of the manifold valve assembly 610, in an exemplary manner, the manifold assembly is installed in a fluid system under vacuum and connected to a leak detection device (e.g., a mass spectrometer), and a test fluid (e.g., a tracer gas such as helium or hydrogen) is sequentially supplied to each of the leak test ports 663a, 663b, and the leak detection device is used to measure the ingress of the test fluid into the valve cavities 612a, 612b that have passed through the body seal (e.g., due to discontinuities or contaminants in the bead section or outer seal surfaces 625a, 625b) to identify leaks in the body seal.

The application provides a molecular gas chamber leakage rate detection method, an electronic device and a detection system. The method can include: testing spectrum data of a to-be-detected molecular gas chamber; calculating a half-height width of the spectrum data according to the spectrum data; and determining a leakage rate of the to-be-detected molecular gas chamber based on the half-height widths obtained at multiple times. In the method, the leakage rate detection accuracy of the molecular gas chamber can be better ensured without affecting the purity in the molecular gas chamber.

The application discloses a kind of oil pipeline leakage intelligent monitoring and positioning method and device, its method includes: collection fiber temperature and vibration signal;Based on the fiber temperature and vibration signal, construct deep convolutional neural network fusion model;Collect real-time fiber temperature and vibration signal, input deep convolutional neural network fusion model to the real-time fiber temperature and vibration signal and identify, according to the classification result output pipeline leakage state identification, according to the regression result output leak point positioning.Through using the oil pipeline leakage intelligent monitoring and positioning method and flow based on distributed fiber temperature and vibration sensor given in the application, the leakage state of pipeline can be intelligently predicted, and accurate leakage position is given, to provide decision for pipeline operator to take timely pipeline maintenance measures.

A wastewater pipe inspection device (1) comprising two suspension members (11, 11') rotatably mounted on opposite sides of the main body, each suspension member (11, 11') carrying at least one front wheel (10a, 10c) and one rear wheel (10b, 10d) on the same side of said device (1), and said suspension members (11, 11') being coupled such that the rotation of one suspension member (11) in one direction of rotation causes the other suspension member (11') to rotate in the opposite direction. Figure 1

The application discloses a microcomputer-controlled electro-hydraulic servo bridge expansion device testing machine, which comprises a base, a detection platform and a detection device. The base is provided with transverse sliding rails, longitudinal sliding rails and at least two groups of movable gantries. The detection platform comprises a first platform and a second platform. The first platform is provided with a vertical misalignment cylinder between the first platform and the transverse sliding rails. The second platform is provided with a misalignment turntable rail between the second platform and the longitudinal sliding rails. The detection device comprises transverse detection devices, longitudinal detection devices and vertical detection devices. The transverse detection devices can exert a transverse load on the first platform. At least two longitudinal loading cylinders of the longitudinal detection devices can independently exert a longitudinal load on the second platform. A plurality of vertical loading cylinders of the vertical detection devices can independently exert a vertical load on different parts of the bridge expansion device. The application can simulate longitudinal inclination, vertical inclination, transverse misalignment and multi-directional composite deformation conditions, and comprehensively detect the sealing performance, fatigue life and structural reliability of the bridge expansion device.

This utility model discloses a testing fixture for a new energy vehicle battery tray, including a tray body and a fixing mechanism. The fixing mechanism includes an insert rod, a snap-fit ​​rod, a fixing sleeve, a pressure plate, a slider, a locking block, a locking groove, and a limiting mechanism. The insert rod is located on the outside of the tray body, the snap-fit ​​rod is fixed to the top of the insert rod, the fixing sleeve is inserted into the top of the snap-fit ​​rod, the pressure plate is fixed to the bottom of the fixing sleeve, multiple sets of sliders slide on the outer wall of the fixing sleeve, the locking block is fixed to the bottom of multiple sets of sliders, and the locking groove is located on the outer wall of the snap-fit ​​rod. The fixing mechanism can be quickly inserted into the positioning hole of the base through the insert rod and the snap-fit ​​rod to provide stable support for the tray body. The pressure plate at the bottom of the fixing sleeve applies reliable downward pressure to the surface of the tray body. The slider and locking block system forms a firm connection with the locking groove on the snap-fit ​​rod, ensuring that the battery tray remains stable during testing. This design completely eliminates the traditional bolt connection method.

The application discloses a precision checking device, which is established based on a checking platform, a checking system and auxiliary equipment. The checking platform is used for fixing the checking system and the auxiliary equipment. In the checking system, the experimental pipe b is sealed, then is pressed by a pressure pump in stages, and the precision of checking measurement is compared in the mode of the pressure gauge and the pressure transmitter value of test point b; the experimental pipe b is deformed by a jack, and the precision of checking measurement is compared in the mode of the dial gauge and the vibrating wire stress meter value of test point c; the experimental pipe b is measured by ultrasonic wall thickness monitoring equipment, and the precision of checking measurement is compared in the mode of the measured data and the real wall thickness. The checking device and the checking method can simply and conveniently check and calibrate oil and gas pipeline leakage monitoring and early warning equipment such as a pressure transmitter, a vibrating wire stress meter, ultrasonic wall thickness monitoring equipment and the like, and provide convenience for on-site equipment installation and maintenance.

The present application relates to the technical field of comprehensive energy station safety, and particularly relates to a hydrogen-electric-oil-gas comprehensive energy station safety monitoring method based on lightweight deep learning. The method uses an LSTM encoder-decoder model to model the time series data of the comprehensive energy station multi-sensor, and identifies abnormalities through reconstruction error. Meanwhile, various model pruning and other lightweight technologies are introduced to reduce the model complexity and obtain the best performance under the premise of ensuring the detection accuracy. Using the method, the intelligent monitoring of the hydrogen-electric-oil-gas comprehensive energy station operation state can be realized, potential safety hazards such as hydrogen leakage and equipment failure can be quickly found, the early warning response speed and reliability can be improved, the safe and stable operation of the energy station can be ensured, and under the premise of ensuring the monitoring accuracy, the model is lightweight processed, so that it can efficiently operate.

The present disclosure provides a water automatic exchange assembly (7000) and a self-cleaning maintenance station. The water automatic exchange assembly (7000) includes a control device (7100) and a water tank assembly (7200). The control device (7100) is configured to realize automatic addition of clean water, automatic discharge of sewage, or automatic addition of cleaning liquid to the water tank assembly (7200). The water tank assembly (7200) is configured to be assembled in a water storage chamber (2700) of the self-cleaning maintenance station. The water tank assembly (7200) includes a sewage tank (5000), a clean water tank (4000), and a water tank top shell (7300). The water tank top shell (7300) substantially covers the sewage tank (5000) and the clean water tank (4000). The water tank top shell (7300), the sewage tank (5000), and the clean water tank (4000) form an integral structure. When the water tank assembly (7200) is assembled in the water storage chamber (2700) of the self-cleaning maintenance station, a part of the tank body of the water tank assembly (7200) is disposed outside the water storage chamber (2700). The present disclosure designs the water tank assembly (7200) as an integral structure, which facilitates the assembly of the water tank and at the same time provides an integral structure convenient for automatic addition of clean water and automatic discharge of sewage in the water tank.

This utility model relates to the field of far-infrared light wave oxygen chamber technology, and in particular to a sealed far-infrared light wave oxygen chamber leak-proof monitoring device, including a chamber body and a door for closing the opening on the surface of the chamber body. The door is provided with a detection mechanism for detecting whether there is an air leak at the door. The detection mechanism is characterized by comprising: a first sliding groove disposed on the top of the door, with a first slider slidably connected inside the first sliding groove; a driving mechanism disposed in the first sliding groove, the driving mechanism being used to drive the first slider to slide along the inside of the first sliding groove; and a folding plate assembly disposed in the first sliding groove, the folding plate assembly including a first folding plate, a plurality of second folding plates and a third folding plate; after the door is closed and the folding plate assembly is unfolded, an infrared sensor can be brought close to the surface of the door to monitor the temperature change at the door in real time, thereby determining whether there is an air leak.

The application discloses a finder with distance sensing, which comprises an ocular assembly, a distance sensor assembly connected to the observation end of the ocular assembly, a soft rubber eyeshield connected to the distance sensor assembly, the ocular assembly connected to a display module assembly at the other end of the observation end, and a cable connected to the display module assembly and electrically connected to an image signal acquisition module of a leak detector; the display module assembly comprises a controller and a display module arranged on a circuit board, and the input end of the display module is connected to the output end of the image signal acquisition module of the leak detector; the distance sensor assembly comprises a distance sensor, and when a person approaches or moves away from the distance sensor, an electric signal generated by the distance sensor is transmitted to the controller to wake up or extinguish the display module. The finder can detect whether a person approaches or moves away from the distance sensor through the distance sensor assembly, and the electric signal generated by the distance sensor is transmitted to the controller to wake up or extinguish the display module, so that the finder is in a standby state when not in use, and the electric quantity is saved.

This utility model discloses a heating device for testing thermos cups, including a box and a heating device installed in the box. The box also has a heat transfer component for transferring heat, which is connected to the output end of the heating device. Multiple output pipes are evenly arranged on the top of the box, and the bottom of the output pipes extends into the box and connects to the heat transfer component. A first heat insulation layer is provided in the box wall, and a first heat reflection layer is provided on the inner wall of the box. The advantage is that it avoids the heating effect of the heating device being affected by the low temperature environment outside. At the same time, in order to reduce heat loss in the box, a first heat reflection layer (such as aluminum foil or stainless steel foil) is provided on the inner wall of the box, which further improves the heat preservation of the box.

An outer housing for a pressure monitoring system includes a sidewall shell defining an outer shell surface and a top end, the sidewall shell comprising an annular outer sidewall projection extending from the top end, the outer sidewall projection defining at least a portion of the outer shell surface; and a cap mounted to the sidewall shell, the cap defining an inner cap surface and an annular outer cap surface opposite the inner cap surface, the outer sidewall projection extending alongside the outer cap surface; wherein the outer cap surface defines a cap curved portion and the outer sidewall projection defines a projection curved portion meeting the cap curved portion, such that the cap is substantially flush with the sidewall shell.

This disclosure relates to a testing assembly for a vehicle body and a vehicle body production line. The testing assembly for the vehicle body includes a contouring fixture, a first clamping part, and a testing part. The contouring fixture is used to engage with the vehicle body to be tested, forming a testing cavity. One end of the first clamping part is connected to the contouring fixture, and the other end is used to abut against the vehicle body to be tested, providing a force to press the vehicle body to be tested against the contouring fixture. The testing part includes an ultrasonic generator and an ultrasonic probe. The ultrasonic generator is connected to the contouring fixture and located in the testing cavity. The ultrasonic probe is located outside the testing cavity and is used to receive the signal from the ultrasonic generator. The testing process is convenient; simply engaging the contouring fixture with the vehicle body to be tested is sufficient to effectively test the vehicle body, reducing the complexity of the testing process, the preparation time, and the number of personnel required for testing. While ensuring the testing effect, it effectively improves the testing efficiency.

The disclosure provides an aging detection method and a vehicle for a vehicle sealing strip, and relates to the technical field of data processing. The method comprises the following steps: by determining whether the current driving scene is an external water contact scene, an actual use environment factor highly related to sealing strip failure is introduced, so that the aging determination has a clear scene premise. In the scene, the wind noise in the vehicle interior at a first speed is obtained only when the openable and closable part of the vehicle body is in a closed state, and the analysis is combined with the drain hole state, which can effectively eliminate the interference of the opening and closing state change and the drain abnormality on the noise, so that the sealing strip aging degree judgment based on the target wind noise and the drain hole state is more reliable, thereby improving the accuracy of the sealing strip aging degree judgment.

The utility model discloses a light transmittance detection device which comprises a detection working table, a plurality of supports are arranged on the detection working table, the top faces of the supports jointly bear an emitting assembly for providing emitted light, and a receiving detection assembly for detecting the light transmittance of materials is connected to the position, located above the emitting assembly, of the detection working table. A detection positioning plate covers the transmitting assembly, a plurality of hole grooves are formed in the detection positioning plate, each hole groove is covered with light-transmitting glass, and at least two positioning modules are arranged on the detection positioning plate and located on the side edge of each piece of light-transmitting glass; one side of the detection workbench is further provided with a rotary clamping jaw mechanism used for clamping materials to the position of the light-transmitting glass above the hole groove. The light transmittance detection device is applied to the automatic assembling and detecting mechanism for the electronic pump cover body, can efficiently realize the processes of automatic feeding, cleaning, assembling, detecting, discharging and the like of the electronic pump cover body, and is compact in structure and high in automation degree.

The application discloses a kind of rolling bearing dustproof performance test device, including square box, cylindrical box, bearing seat, shaft and motor, to be tested bearing is installed on bearing seat, bearing seat is arranged in cylindrical box, cylindrical box is in square box, one end of shaft is connected with the shaft of motor through coupling, the other end passes through square box and enters cylindrical box and also passes through the inner ring of to be tested bearing on bearing seat, cylindrical box is fixed on the shaft, when testing, motor drives shaft to swing back and forth at 5r / min rotational speed, 90 ° angle.The device of the application can simulate the bearing use environment, accurately detect its dustproof performance, and the test result is reliable, which helps to improve the quality of bearing products.

This utility model discloses an airtightness testing instrument, comprising a profile with transverse grooves, longitudinal grooves, and screw slots; four of the profiles are distributed at the four corners; a housing comprising a front plate and a rear plate whose ends are respectively inserted into two of the transverse grooves, a left plate and a right plate whose ends are respectively inserted into two of the longitudinal grooves, a bottom plate connected to the screw slots by screws, and a top plate; a quick-release cover detachably connected to the profiles; the quick-release cover is used to fix the top plate to the profiles to restrict the vertical movement of the top plate relative to the profiles. This utility model provides an airtightness testing instrument that, through the connection of the quick-release cover to the profiles, restricts the top plate to the profiles, thereby completing the installation of the top plate. This process does not require screws, facilitating the disassembly and installation of the top plate, reducing steps, and increasing efficiency.

Cavitation detection system for detecting cavitation in a hydraulic system, the detection system comprising a first temperature sensor configured to be positioned at a first position in the hydraulic system; a second temperature sensor configured to be position at a second position in the hydraulic system, the second position being downstream of the first position; a control unit configured to receive the temperature values sensed by the first and second temperature sensors and configured to, if a temperature difference is detected, issue a cavitation detection signal.

Calibration instrument (1) for a leak detection device, comprising a casing (3), one or more fluidic devices (4, 5, 6), one or more connecting pieces (51), and one or more fastening elements, each of the fluidic devices (4, 5, 6) comprising a conduit and a pressure-reducing element disposed in the conduit so as to limit the flow of a fluid between a first part of the conduit and a second part of the conduit, the connecting piece(s) (51) being configured to maintain one or more of said fluidic devices (4, 5, 6) in position relative to the casing (3), the fastening element(s) being configured to reversibly fix the connecting piece(s) (51) to the casing (3). Figure for the abbreviation: Fig. 2

The invention belongs to the technical field of gas detection, and provides an infrared gas leakage detection method and system, and the method comprises the steps: obtaining an infrared leakage gas data set; constructing an infrared gas leakage detection model based on the acquired data set; performing infrared gas leakage detection according to the constructed infrared gas leakage detection model to obtain a detection result of infrared leakage gas; wherein the constructed infrared gas leakage detection model adopts a YOLOv8-CGM detection model, a YOLOv8 network structure introduces a convolution gating unit on the basis of maintaining a C2f multi-branch structure, a C2f module C2fCGFE is enhanced by adopting convolution gating features, a multi-scale feature fusion mode and a loss function are improved, and a P2 layer small target detection head is added at a neck part.

The application discloses a water conservancy project structure leakage monitoring and positioning system based on multi-sensor cooperation and relates to the technical field of water conservancy project monitoring. A heterogeneous graph structure is constructed by fusing real sensor nodes and virtual physical field nodes; a space-time attention and physical constraint graph convolution network is deployed, a time asynchronous alignment module is used to adaptively compensate for the response delay of the heterogeneous sensor to the leakage event, a physical constraint graph attention layer is used to modulate the information transmission between nodes by using a dynamic physical coupling coefficient, a continuous leakage probability distribution field with sparse constraints is generated, and a joint loss function containing a data fitting term and a physical residual term is constructed to force the model to predict a seepage mechanics partial differential equation. The application can realize sub-sensor precision leakage positioning, has high robustness and interpretability in a data sparse and strong noise environment, and can effectively reduce the false positive rate and the whole life cycle cost of water conservancy project leakage monitoring.

Comprehensive testing system a control unit (10) with a housing (13) and with a connector unit (20) attached to the housing (13), the connector unit (20) comprising a through-hole (28) to an interior (14) of the housing (13), and a test lance (40) with a test opening, characterized by the fact that the test lance (40) can be attached to the connector unit (20) from the outside in a sealing manner and its test opening surrounds the through hole (28) when attached, so that the interior (14) of the housing (13) can be pressurized via the test lance (40).

This utility model discloses a deep groove ball bearing sealing performance testing device, belonging to the field of bearing testing technology. It includes a testing platform, with a mounting base fixedly installed at the top center of the testing platform. A sliding column is slidably connected through the mounting base. Four connecting blocks are fixedly connected to the top of the outer surface of the sliding column, and four limiting blocks are fixedly installed to the bottom of the outer surface of the sliding column. This deep groove ball bearing sealing performance testing device, by setting up arc-shaped push plates and a handheld circular block, uses the handheld circular block to move the sliding column upwards, causing the four arc-shaped push plates to retract. After the bearing ring is placed on the outside of the four arc-shaped push plates, pressing down the handheld circular block causes a connecting rod to push the arc-shaped push plates tightly against the inner ring of the bearing ring. Simultaneously, a telescopic rod pushes the arc-shaped push plates to prevent them from detaching from the surface of the testing platform, positioning the bearing ring at the top center of the testing platform and aligning it with the sealing cap, ensuring that the sealing cap completely covers the surface of the bearing ring, thus preventing deviations in the sealing performance test.

In some embodiments, methane leak emissions are quantified accurately in natural gas distribution systems in which mobile surveys are performed on different parts of a target area over an extended reporting period (e.g. a year or more). Emission calculations depend on repair and / or mobile survey schedules, and employ temporal and / or spatial extrapolation in order to account for imperfect real-time information about system state.

A method for monitoring defects in pipeline sections and / or containers with an insulation layer. A sensor line, comprising a single optical fiber or a bundle of optical fibers, is attached along the length of the pipeline section or over the surface of the container, and positioned on the exterior of the insulation layer. The sensor line is operatively coupled to a temperature sensing (DTS or FBG based) system. The method determines an exterior temperature profile over the length of the pipeline section or surface of the container via the temperature sensing system. Defects are detected, based on analysis of the measured exterior temperature profile and a locally averaged exterior temperature profile along the length of the pipeline section or surface over the container.