Sealing gasket visual test device and leakage identification method
By using transparent tooling modules and multiple cameras in the gasket test device, combined with CNC computers and image recognition methods, the problems of difficulty in installing traditional test devices and low accuracy are solved, and the waterproof performance of the gasket is achieved quickly and accurately Testing and leak identification.
Patent Information
- Application Number
- CN202410183121.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-19
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2044-02-19
AI Technical Summary
The traditional sealing gasket waterproof performance test device has difficulty in installing and large errors during assembly, and it is difficult to observe the sealing gasket hidden behind the joints, resulting in difficulty in judging leakage conditions. The test time is long and the accuracy is limited, so it is impossible to accurately identify leakage in real time. Points and forms.
A gasket visualization test device was designed, using a visualization system composed of transparent tooling modules and multiple cameras, combined with a CNC computer and a display to realize the full angle observation of the gasket and image data acquisition, and real-time through image recognition methods and film pressure sensors Monitor water pressure and flow to quickly and accurately identify leakage.
It realizes clear observation of the entire process of the sealing gasket waterproof performance test, timely and accurately judges the occurrence and leakage paths of water leakage, significantly improving the test speed and accuracy, and reducing test errors.
Smart Images
Figure CN118424591B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of prefabricated and assembled underground engineering and testing, and in particular to a sealing gasket visualization testing device and a leakage identification method. Background Art
[0002] There are a large number of circumferential longitudinal joints between the prefabricated components of prefabricated underground structures such as shield tunnels and prefabricated stations. Waterproofing design is one of the most important links in structural design. The waterproofing effect of joints will directly affect the safety of the structure and its later operation. In order to meet the needs of engineering waterproofing, the joint sealing pads used need to be subjected to water pressure tests for various working conditions that may occur during the assembly process.
[0003] by Figure 6 For example, traditional sealing gasket waterproof performance test devices generally use 2 to 3 pieces of metal tooling to assemble and squeeze the waterproof sealing gasket. During the assembly process, the screws are tightened manually. Due to the large compression reaction force of the sealing gasket, the installation is difficult and there are certain errors. After assembly, the width of the joints between the tooling is generally 0-15mm. It is very difficult to observe the sealing gasket hidden behind the joint. The observation angle is small and many surfaces need to be observed. It is almost impossible for testers to detect leakage in a timely and accurate manner through observation.
[0004] According to my country's standard GB18173.4 "Rubber Sealing Pads for Shield Tunneling", the test water pressure should be increased step by step by 0.1MPa, and the pressure should be maintained for 30 minutes after each pressure increase. The pressure gauge water pressure should be observed to see if it drops as a basis for judging whether the sealing pad is leaking. Taking a sealing pad with a waterproof performance of 2MPa as an example, the test water pressure data of each level of 0.1MPa may have a test error of up to 5% relative to the waterproof performance, and the accuracy is limited; and a set of tests takes up to more than ten hours, and a sealing pad often requires up to dozens of sets of experiments, which consumes a lot of the working time of experimental technicians. At the same time, the data obtained from the test is only the water pressure size when leaking, and the data obtained is relatively single. It is impossible to observe the deformation and leakage of the sealing pad, and it is difficult to determine the specific leakage point and leakage form. There is no reference value for the analysis of the leakage mechanism of the sealing pad, and it provides limited reference for subsequent design optimization.
[0005] To this end, in view of the above-mentioned defects, the designers of the present invention have devoted themselves to research and design, and combined the experience and achievements of many years in related industries to research and design a gasket visualization test device and a leakage identification method to overcome the above-mentioned defects. Summary of the invention
[0006] The purpose of the present invention is to provide a sealing gasket visualization test device and a leakage identification method, which can conveniently and clearly observe the sealing gasket and the sealing space formed by it during the whole process of the sealing gasket waterproof performance experiment; can timely and accurately judge the occurrence of leakage and observe the leakage path when the sealing gasket fails.
[0007] To achieve the above purpose, the present invention discloses a visual testing device for sealing gaskets, which is arranged on a visual testing platform for sealing gasket waterproof performance. The visual testing platform for sealing gasket waterproof performance is composed of a testing loading system, a numerical control computer and a display, and is characterized in that:
[0008] The sealing gasket visualization test device comprises a visualization tooling module, which comprises a right tooling block, a left tooling block, an upper tooling block, a right fixed plate, a left fixed plate, an upper fixed plate and a camera, wherein the right tooling block is fixed to the right fixed plate by bolts, the left tooling block is fixed to the left fixed plate by bolts, and the upper tooling block is fixed to the upper fixed plate by bolts, and the cameras are multiple and are respectively arranged on the inner surfaces of the right fixed plate, the left fixed plate and the upper fixed plate, the images collected by the cameras are transmitted to a display, and the image screen integrated by the display is transmitted to a numerical control computer for image processing, and the test loading system provides the thrust and water pressure required for the test, and collects data of the thrust, water pressure, flow rate and displacement and transmits them to the numerical control computer;
[0009] The right tooling block, the left tooling block and the upper tooling block are squeezed and closed to form a T-shaped sealed space. The right tooling block, the left tooling block and the upper tooling block are all made of transparent plexiglass. A plurality of T-shaped slide grooves are arranged at intervals on the inner surfaces of the right fixed plate, the left fixed plate and the upper fixed plate to place the camera. A flange is provided at the rear of the camera to form an outer contour that matches the T-shaped slide groove, so as to effectively ensure that the camera angle is stable after the camera is installed in the slide groove.
[0010] Among them, there are 14 cameras, three pairs of slide grooves are arranged at equal intervals on the lower surface of the upper fixed plate, and two pairs of slide grooves are arranged on the right fixed plate and the left fixed plate respectively to install the cameras.
[0011] Among them: the display area of the display is divided into 16 parts according to 4*4, and each part displays a picture taken by a camera. The pictures taken by the three pairs of cameras fixed on the upper tooling block, totaling six cameras, can be seen in the display, and the sealing gasket on the upper observation surface of the T-shaped sealing area can be pieced together into a complete rectangle. The two pairs of cameras installed on the left tooling block, totaling four cameras, can piece together the sealing gasket on the left observation surface of the T-shaped sealing area into a complete rectangle. The two pairs of cameras installed on the right tooling block, totaling four cameras, can piece together the sealing gasket on the right observation surface of the T-shaped sealing area into a complete rectangle. The three observation surfaces form an image, and three complete rectangles are formed in the display, which is convenient for graphic frame selection and recognition when the display image is recognized.
[0012] Among them: the lower surface and right side surface of the right tooling block, the lower surface and left side surface of the left tooling block, and the upper surface of the upper tooling block are polished smooth surfaces, ensuring that the camera can clearly photograph the sealing area of the sealing gasket through these tooling blocks, and the remaining surfaces of the tooling blocks are frosted surfaces to prevent the complex reflection glare after the external light enters and cause the camera to be unable to form an image.
[0013] Among them: the upper surface and left side surface of the right tooling block, the upper surface and right side surface of the left tooling block, and the lower surface of the upper tooling block are all provided with one sealing gasket groove and two sealing gasket grooves for pasting waterproof sealing gaskets.
[0014] Among them: a thin film pressure sensor is pasted on the compression contact surface of each waterproof sealing gasket, and the thin film pressure sensor is arranged in the straight section and the corner section of the sealing gasket to monitor the size of the contact pressure between the sealing gaskets during the test when the sealing gasket is compressed to failure leakage. The data collected by the thin film pressure sensor is transmitted to the CNC computer.
[0015] Among them: a pressurizing port, a first pressure relief port and a second pressure relief port are arranged on the top of the upper tooling block, and holes are opened at corresponding positions on the upper fixed block for connecting with the water pressure pipeline and the drainage pipeline of the test loading system. The pressurizing port and the first pressure relief port are connected to the sealing area surrounded by a first sealing gasket, and the second pressure relief port is connected to the sealing area between the first sealing gasket and the second sealing gasket.
[0016] Also disclosed is a leakage identification method of the above-mentioned sealing gasket visualization test device, which is characterized by comprising the following steps:
[0017] Step 1: Paste the sealing gasket into the groove of the tooling block, install the sealing gasket visualization experimental device on the visualization sealing gasket waterproof performance test platform, set the parameters of this test in the CNC computer, including the seam opening amount, misalignment amount, initial water pressure, incremental water pressure, pressurization interval, and pressure holding time, and then start the water pressure test;
[0018] Step 2: The captured graphics integrated by the display are input into the CNC computer for image recognition. The black rectangular frame corresponding to the sealing gasket is the sealing gasket area, the inside of the sealing gasket is the sealing area, and the outside of the sealing gasket is the leakage area. The sensor starts to collect water pressure, flow rate, and time data;
[0019] Step 3: Fill the pressure port with water and exhaust the pressure at the pressure relief port. The test uses a red dye liquid. When all the sealing areas identified by the image turn red, it is determined that the T-shaped sealing water chamber is full. The test begins and the water pressure in step 4 is gradually loaded according to the setting.
[0020] Step 4: The water pressure is loaded gradually according to the setting. The CNC computer judges in real time according to the following rules based on the collected data: whether the water pressure drops; whether the flow increases; whether the image recognition of the leakage area outside the sealing gasket appears red. If it is judged as yes, it is confirmed that the seal has failed, leakage has occurred and the leakage water pressure is recorded.
[0021] The water pressure is judged in real time according to the following rules, that is, whether the water pressure 10 seconds ago is 1.05 times the real-time water pressure, that is, P t-10 / P t >1.05; judge whether the flow rate has increased, that is, whether the real-time flow rate is 1.05 times that of 10 seconds ago, that is, V t / V t-10 >1.05; determine whether the image recognition of the leakage area outside the sealing gasket appears red. When at least one of the three judgments is yes, it is confirmed that the seal has failed, leakage has occurred and the leakage water pressure is recorded.
[0022] From the above content, it can be seen that the sealing gasket visualization test device and leakage identification method of the present invention have the following effects:
[0023] 1. Compared with the prior art, the seams are too narrow to be observed during the waterproof sealing gasket test. The present invention realizes real-time observation and image data collection of the T-shaped sealing area at all angles through innovative transparent tooling design and camera arrangement.
[0024] 2. Based on the collected image data, a water leakage identification method for matching relevant experimental equipment is proposed, which can quickly (the existing test maintains the pressure of 0.1 MPa for 30 minutes at each level) and accurately (the leakage water pressure is 0.1 MPa per level, with large error) identify the occurrence of test leakage, thereby improving the speed and accuracy of the leakage water pressure identification results.
[0025] 3. During the whole process of the waterproof performance test of the sealing gasket, the sealing gasket and the sealing space formed by it can be conveniently and clearly observed; the occurrence of water leakage can be judged in a timely and accurate manner and the leakage path when the sealing gasket fails can be observed.
[0026] The details of the present invention can be obtained from the following description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1A and Figure 1B A schematic diagram of a visualization tooling module of a visualization test device for a sealing gasket of the present invention is shown.
[0028] Figure 2 The schematic diagram of the structure of the sealing gasket visualization test device of the present invention is shown.
[0029] Figure 3 A schematic diagram of the sealing gasket installation and camera shooting area of the present invention is shown.
[0030] Figure 4 A schematic diagram showing the sealing area observation surface of the present invention is shown.
[0031] Figure 5 A flow chart of the leakage determination method of the present invention is shown.
[0032] Figure 6 The schematic diagram shows the structure of a sealing pad waterproof performance test device in the prior art.
[0033] Reference numerals:
[0034] a. Test loading system; b. Visual test device for sealing gasket; c. CNC computer; d. Display; 1. Right tooling block; 2. Left tooling block; 3. Upper tooling block; 4. Right fixing plate; 5. Left fixing plate; 6. Upper fixing plate; 7. Slide; 8. Pressurization port; 9. One pressure relief port; 10. Two pressure relief ports; 11. One sealing gasket groove; 12. Two sealing gasket grooves; 13. Camera; 14. Waterproof sealing gasket; 15. Thin film pressure sensor. DETAILED DESCRIPTION
[0035] See also Figure 2 The sealing gasket visualization test device b of the present invention is arranged on a visualization sealing gasket waterproof performance test platform, and together with the test loading system a, the numerical control computer c, and the display d, constitutes a visualization sealing gasket waterproof performance test platform.
[0036] See also Figure 1A and Figure 1B The sealing gasket visualization test device b includes a visualization tooling module, which includes a right tooling block 1, a left tooling block 2, an upper tooling block 3, a right fixed plate 4, a left fixed plate 5, an upper fixed plate 6, a camera 13 and a thin film pressure sensor 15. The right tooling block 1 is fixed to the right fixed plate 4 by bolts, the left tooling block 2 is fixed to the left fixed plate 5 by bolts, and the upper tooling block 3 is fixed to the upper fixed plate 6 by bolts. The cameras can be multiple and are respectively arranged on the inner surfaces of the right fixed plate 4, the left fixed plate 5, and the upper fixed plate 6. Preferably, 14 cameras are arranged in total. The image collected by the camera 13 is transmitted to the display d, and the image screen integrated by the display d is transmitted to the CNC computer c for image processing. The test loading system a provides the thrust and water pressure required for the test, and collects data such as top thrust, water pressure, flow rate, displacement, etc. and transmits them to the CNC computer c. The CNC computer c can control the visualization sealing gasket waterproof performance test platform to automatically run the test with one key, record the test data and perform data processing.
[0037] Among them, after the right tooling block 1, the left tooling block 2 and the upper tooling block 3 are squeezed closed, a T-shaped sealed space is formed between the right tooling block 1, the left tooling block 2 and the upper tooling block 3. The right tooling block 1, the left tooling block 2 and the upper tooling block 3 are all made of transparent organic glass. The high-strength transparent organic glass material can withstand a thrust of up to tens of tons when the tooling blocks are squeezed. Among them, the lower surface and right side surface of the right tooling block 1, the lower surface and left side surface of the left tooling block 2, and the upper surface of the upper tooling block 3 are polished smooth surfaces to ensure that the camera 13 installed on the inner side of the right fixing plate 4, the left fixing plate 5, and the upper fixing plate 6 can clearly shoot the sealing area of the sealing gasket through these tooling blocks; at the same time, bolt holes are set on the right tooling block 1, the left tooling block 2 and the upper tooling block 3 for connecting with the corresponding fixing plates. See also Figure 3 The upper surface and left side surface of the right tooling block 1, the upper surface and right side surface of the left tooling block 2, and the lower surface of the upper tooling block 3 are all provided with a sealing gasket groove 11 and two sealing gasket grooves 12 for pasting a waterproof sealing gasket 14. The remaining surfaces of the tooling blocks are frosted surfaces to prevent the camera from being unable to image due to complex reflection glare after external light enters.
[0038] The right fixing plate 4, the left fixing plate 5 and the upper fixing plate 6 are all provided with bolt holes for connecting with the corresponding tooling blocks, and some of the bolt holes are used for connecting and fixing with the test loading system a. Figure 1B The inner surfaces of the right fixing plate 4, the left fixing plate 5 and the upper fixing plate 6 are provided with a plurality of T-shaped slots 7 for placing the camera 13. The tail of the camera 13 is provided with a flange to form an outer contour that matches the T-shaped slot 7, so as to effectively ensure that the camera 13 is installed in the slot and the camera angle is stable; the camera 13 is a distortion-free camera to ensure that the shooting picture is accurate. It is preferred that Figure 1B As shown, three pairs of slide grooves 7 are arranged at equal intervals on the lower surface of the upper fixing plate 6, and two pairs of slide grooves 7 are arranged on the right fixing plate 4 and the left fixing plate 5 respectively, so as to install the 14 cameras 13.
[0039] Among them, Figure 1A As shown, a pressurizing port 8, a pressure relief port 9 and a second pressure relief port 10 are arranged on the top of the upper tooling block 3, and holes are opened at corresponding positions on the upper fixing block 6 for connecting with the water pressure pipeline and the drainage pipeline of the test loading system. The pressurizing port 8 and the first pressure relief port are connected to the sealing area surrounded by a sealing gasket, and the second pressure relief port 10 is connected to the sealing area between the first sealing gasket and the second sealing gasket.
[0040] Among them, Figure 4As shown, the display area of the display d is divided into 16 parts according to 4*4, and each part displays a picture taken by a camera 13. 14 cameras are arranged in pairs (A / B) in different positions in the slide groove of the fixed plate. The pictures taken by the three pairs of cameras (13-1, 13-2 and 13-3) fixed to the upper tooling block 3, a total of six cameras, can be in the display d, and the sealing gasket on the upper observation surface of the T-shaped sealing area is assembled into a complete rectangle. The two pairs of cameras (13-4, 13-5) installed on the left tooling block 4, a total of four cameras, assemble the sealing gasket on the left observation surface of the T-shaped sealing area into a complete rectangle. The two pairs of cameras 13-6, 13-7 installed on the right tooling block 5, a total of four cameras, assemble the sealing gasket on the right observation surface of the T-shaped sealing area into a complete rectangle. The three observation surfaces form an image, forming three complete rectangles in the display d, which is convenient for the graphic frame selection recognition when the display image is recognized.
[0041] The waterproof gasket 14 is pasted in the groove of the tooling block. Two or only one waterproof gasket can be pasted according to the test requirements. The compression contact surface of each waterproof gasket 14 is pasted with a film pressure sensor 15. The film pressure sensor 15 is arranged in the straight section and the corner section of the gasket to monitor the contact pressure between the gaskets during the test when the gasket is compressed to failure leakage. The data collected by the film pressure sensor 15 is transmitted to the numerical control computer c.
[0042] As pointed out in the technical background above, the existing leakage identification method is time-consuming and has a large error in identifying the leakage water pressure. The present invention also discloses a leakage identification method based on the above-mentioned sealing gasket visualization test device b, such as Figure 5 As shown, it may include the following steps:
[0043] Step 1: Paste the gasket into the groove of the tooling block, install the gasket visualization experimental device into the fixed seat of the visualization gasket waterproof performance test platform and tighten the screws. Set the parameters of this test in the CNC computer, including the seam opening, misalignment, initial water pressure, incremental water pressure, pressurization interval, and pressure holding time, and then start with one button, and the visualization gasket waterproof performance test platform will automatically start the water pressure test.
[0044] Step 2: The captured images after the display is integrated are input into the CNC computer for image recognition. The black rectangular frame corresponding to the gasket is the gasket area, the inside of the gasket is the sealing area, and the outside of the gasket is the leakage area. The sensor starts to collect water pressure, flow, and time data.
[0045] Step three, water is injected into the pressure port and exhaust is discharged from the pressure relief port. The test uses a red dye liquid. After all the sealing areas identified by the image turn red, it is determined that the T-shaped sealing water chamber is full. The test begins and the water pressure in step four is gradually loaded as set.
[0046] Step 4: Water pressure is gradually loaded according to the setting. The CNC computer judges in real time according to the following rules based on the collected data to see whether the water pressure has dropped, that is, whether the water pressure 10 seconds ago is 1.05 times the real-time water pressure, that is, P t-10 / P t >1.05; judge whether the flow rate has increased, that is, whether the real-time flow rate is 1.05 times that of 10 seconds ago, that is, V t / V t-10 >1.05; determine whether the image recognition of the leakage area outside the gasket appears red. If it is judged to be yes, it is confirmed that the seal has failed, leakage has occurred and the leakage water pressure is recorded.
[0047] The reason why the three situations are judged in real time at the same time is that during the pressurization process, if the leakage is relatively small, the water pressure may not drop after the leakage occurs, and the flow rate changes very little. The flow rate will also fluctuate slightly during the normal test process, and it cannot be determined as a leakage. Compared with the water pressure and flow rate judgment, the timeliness of using only image recognition judgment is slightly worse, because image recognition requires the leaking liquid to gather in a certain area in the leakage area to be judged, and the water pressure and flow rate will change at the beginning of the leakage. Therefore, the above method can achieve fast and accurate water leakage identification.
[0048] During the test, when the gasket area identification appears red, it means that the liquid is not leaking from the gasket contact surface, but leaking from the groove and the gasket contact surface. It can be judged that the gasket adhesion quality is insufficient and the test fails.
[0049] It is obvious that the above description and record are only examples and are not intended to limit the disclosure, application or use of the present invention. Although the embodiments have been described in the embodiments and described in the drawings, the present invention is not limited to the specific examples of the teachings of the present invention as the best mode currently considered by the drawings and described in the embodiments, and the scope of the present invention will include any embodiment falling within the previous description and the attached claims.
Claims
1. A visual test device for sealing gaskets, which is arranged on a visual test platform for sealing gasket waterproof performance, and which together with a test loading system, a numerical control computer, and a display constitute a visual test platform for sealing gasket waterproof performance, characterized in that: The sealing gasket visualization test device includes: the visualization tooling module includes a right tooling block, a left tooling block, an upper tooling block, a right fixed plate, a left fixed plate, an upper fixed plate and a camera, the right tooling block is fixed to the right fixed plate by bolts, the left tooling block is fixed to the left fixed plate by bolts, the upper tooling block is fixed to the upper fixed plate by bolts, the cameras are multiple and are respectively arranged on the inner surfaces of the right fixed plate, the left fixed plate and the upper fixed plate, the images collected by the cameras are transmitted to a display, the image screen integrated by the display is transmitted to a numerical control computer for image processing, the test loading system provides the thrust and water pressure required for the test, and collects data of the thrust, water pressure, flow rate and displacement and transmits them to the numerical control computer; The right tool block, the left tool block and the upper tool block are squeezed and closed to form a T-shaped sealed space. The right tool block, the left tool block and the upper tool block are all made of transparent organic glass. A plurality of T-shaped slide grooves are arranged on the inner surfaces of the right fixing plate, the left fixing plate and the upper fixing plate to place the camera. The tail of the camera is provided with a flange to form an outer contour that matches the T-shaped slide groove, so as to effectively ensure that the camera angle is stable after the camera is installed in the slide groove; There are 14 cameras, and three pairs of slide grooves are equidistantly arranged on the lower surface of the upper fixed plate. The right fixed plate and the left fixed plate are each provided with two pairs of slide grooves so as to install the 14 cameras. The display area of the display is divided into 16 parts of 4*4, and each part displays a picture taken by a camera. The pictures taken by the three pairs of cameras fixed on the upper tooling block, a total of six cameras, can be used in the display to piece together the sealing gasket on the upper observation surface of the T-shaped sealing area into a complete rectangle. The two pairs of cameras installed on the left tooling block, a total of four cameras, piece together the sealing gasket on the left observation surface of the T-shaped sealing area into a complete rectangle. The two pairs of cameras installed on the right tooling block, a total of four cameras, piece together the sealing gasket on the right observation surface of the T-shaped sealing area into a complete rectangle. The three observation surfaces form an image, and three complete rectangles are formed in the display, which is convenient for graphic frame selection and recognition when the display image is recognized; The lower surface and right side surface of the right tooling block, the lower surface and left side surface of the left tooling block, and the upper surface of the upper tooling block are polished smooth surfaces to ensure that the camera can clearly photograph the sealing area of the sealing gasket through these tooling blocks, and the remaining surfaces of the tooling blocks are frosted surfaces to prevent the camera from being unable to image due to complex reflection glare after external light enters; The upper surface and left side surface of the right tool block, the upper surface and right side surface of the left tool block, and the lower surface of the upper tool block are all provided with a sealing gasket groove and a second sealing gasket groove for pasting a waterproof sealing gasket; A thin film pressure sensor is pasted on the compression contact surface of each waterproof sealing gasket. The thin film pressure sensor is arranged in the straight section and corner section of the sealing gasket. It is used to monitor the size of the contact pressure between the sealing gaskets during the test when the sealing gasket is compressed to failure and leakage. The data collected by the thin film pressure sensor is transmitted to the CNC computer.
2. The sealing gasket visualization test device according to claim 1, characterized in that: A pressurizing port, a first pressure relief port and a second pressure relief port are arranged on the top of the upper tooling block. Holes are opened at corresponding positions on the upper fixing block for connecting with the water pressure pipeline and the drainage pipeline of the test loading system. The pressurizing port and the first pressure relief port are connected to the sealing area surrounded by a first sealing gasket, and the second pressure relief port is connected to the sealing area between the first sealing gasket and the second sealing gasket.
3. A leakage identification method based on the sealing gasket visualization test device according to any one of claims 1-2, characterized in that The steps include: Step 1: Paste the sealing gasket into the groove of the tooling block, install the sealing gasket visualization experimental device on the visualization sealing gasket waterproof performance test platform, set the parameters of this test in the CNC computer, including the seam opening amount, misalignment amount, initial water pressure, incremental water pressure, pressurization interval, and pressure holding time, and then start the water pressure test; Step 2: The captured graphics integrated by the display are input into the CNC computer for image recognition. The black rectangular frame corresponding to the sealing gasket is the sealing gasket area, the inside of the sealing gasket is the sealing area, and the outside of the sealing gasket is the leakage area. The sensor starts to collect water pressure, flow rate, and time data; Step 3: Fill the pressure port with water and exhaust the pressure at the pressure relief port. The test uses a red dye liquid. When all the sealing areas identified by the image turn red, it is determined that the T-shaped sealing water chamber is full. The test begins and the water pressure in step 4 is gradually loaded according to the setting. Step 4: The water pressure is gradually loaded according to the setting. The CNC computer judges in real time according to the following rules based on the collected data: whether the water pressure decreases; whether the flow increases; whether the image recognition of the leakage area outside the sealing gasket appears red. If it is judged to be yes, it is confirmed that the seal has failed, leakage has occurred, and the leakage water pressure is recorded; The water pressure is judged in real time according to the following rules, i.e., whether the water pressure 10 seconds ago is 1.05 times the real-time water pressure, i.e., Pt-10 / Pt>1.05; whether the flow rate increases, i.e., whether the real-time flow rate is 1.05 times that of 10 seconds ago, i.e., Vt / Vt-10>1.05; whether the image recognition of the leakage area outside the sealing gasket appears red, and when at least one of the three judgments is yes, it is confirmed that the seal has failed, leakage has occurred, and the leakage water pressure is recorded; During the test, when the gasket area identification appears red, it means that the liquid is not leaking from the gasket contact surface, but leaking from the groove and the gasket contact surface. It is judged that the gasket adhesion quality is insufficient and the test fails.