Device and method for measuring sealing performance of sealing gasket

Abstract

The invention discloses a device for measuring the sealing performance of a sealing gasket, and the device comprises a test bench, the test bench is provided with a tool lower test pressure plate and a tool upper test pressure plate, a test pressure-sensitive paper is disposed between the tool lower test pressure plate and the tool upper test pressure plate, and the tool upper test pressure plate is used for applying pressure downwards. The method has the advantages that the sealing failure reason of the sealing gasket is deeply analyzed, the sealing performance of the sealing gasket is more accurately measured, high detection cost is not needed, the method is suitable for being widely applied to various production scenes, and the safety and reliability of measured data are guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of sealing gasket measurement, and in particular to a device and method for measuring the sealing performance of a sealing gasket. Background Art

[0002] In the modern industrial field, gaskets are key components to ensure the sealing performance of equipment and are widely used in many industries such as automobile manufacturing, aerospace, electronic equipment, and petrochemicals. Their sealing performance is directly related to the operational stability, safety, and service life of the equipment. In automobile engine systems, gaskets are used to seal the gap between the engine block and the cylinder head to prevent the leakage of high-temperature and high-pressure gases in the combustion chamber, while also avoiding the leakage of coolant and oil. If the gaskets do not seal well, the leakage of high-temperature gases will reduce the power output of the engine, resulting in a decrease in fuel economy, and in severe cases, even causing engine failure. In the aerospace field, key parts such as the hydraulic system and fuel system of aircraft rely on gaskets to maintain the sealing of the system. Once the gasket fails to seal, it may cause hydraulic oil leakage, resulting in malfunction of the flight control system, or cause fuel leakage, posing a serious safety hazard and endangering flight safety. Currently, there are various methods for measuring the sealing performance of gaskets. The traditional bubble method involves installing the gasket on a specific device, immersing it in water, and observing whether bubbles emerge and the rate at which they are generated to determine the sealing performance. Although this method is simple and intuitive, it can only make qualitative judgments and cannot accurately measure the pressure distribution at various locations on the gasket, making it difficult to quantitatively evaluate the sealing performance of the gasket. Moreover, for small leaks, bubbles may not be easily observed, which can easily lead to misjudgment. The pressure test method evaluates the sealing performance by filling the space sealed by the gasket with a certain pressure of gas or liquid and then monitoring the pressure changes. This method can achieve quantitative measurement to a certain extent, but it cannot accurately reflect the details of the pressure distribution on the gasket surface. The difference in pressure distribution at different locations of the gasket has a significant impact on its sealing performance. The pressure test method cannot obtain this critical information, which is not conducive to in-depth analysis of the cause of gasket sealing failure. The helium mass spectrometry leak detection method uses helium as a leak detector gas. It has extremely high sensitivity and can detect extremely small leaks. However, this method requires expensive equipment such as specialized helium mass spectrometers, resulting in high detection costs, complex operation, and demanding testing environment requirements. In addition, with the digital development of industrial production, the management and protection of measurement data has become increasingly important. However, most traditional measurement methods lack effective authority management and data encryption measures. Measurement data can be easily accessed and tampered with at will, threatening the authenticity and reliability of the data.

[0003] Therefore, those skilled in the art are committed to providing a device and method for measuring the sealing performance of a sealing gasket that can effectively solve the above technical problems. Summary of the Invention

[0004] In view of the above-mentioned defects in the prior art, the technical problem to be solved by the present invention is to provide an apparatus and method for measuring the sealing performance of a sealing gasket which can effectively solve the above-mentioned technical problems.

[0005] To achieve the above-mentioned purpose, the present invention provides a device for measuring the sealing performance of a sealing gasket, including a test bench, on which a lower test plate and an upper test plate are provided, and a test pressure-sensitive paper is provided between the lower test plate and the upper test plate, and the upper test plate is used to apply downward pressure.

[0006] Furthermore, a column is provided at the lower end of the test platen under the tooling, and the lower end of the column is detachably connected to the test bench through a positioning seat; Limiting studs are provided on both upper ends of the two sides of the lower test plate of the tooling, and each of the limiting studs is used to limit the sealing gasket, and both sides of the upper test plate of the tooling are sleeved on the limiting studs; Two locking nuts are located above the upper test platen of the tooling and are sleeved on each of the limit studs, and are used to apply torque to squeeze the sealing gasket between the lower test platen of the tooling and the upper test platen of the tooling.

[0007] A method for measuring the sealing performance of a gasket comprises the following steps: S1: Place the sealing gasket to be tested between the lower test platen and the upper test platen of the tooling; S2: Apply torque to leave pressure distribution marks on the pressure-sensitive paper; S3: Remove the pressure-sensitive paper and wait for color development; S4: software calibration; S5: measure the graphics; S6: After the measurement is completed, save the measurement results and output the report.

[0008] Furthermore, S1 specifically includes placing the test pressure-sensitive paper with the smooth side facing downward on the test pressure plate under the tooling, placing the sealing gasket to be tested on the test pressure-sensitive paper, and at the same time, sleeve the sealing gasket and both sides of the test pressure plate on the tooling from top to bottom on each limiting stud, and finally sleeve the two locking nuts on each limiting stud respectively.

[0009] Furthermore, S2 specifically involves tightening the locking nut as required using a torque wrench to load the torque, and maintaining the torque for 4-5 minutes so that the sealing gasket is fully pressurized, leaving a pressure distribution mark on the test pressure-sensitive paper.

[0010] Furthermore, in S3, the operator removes the locking nut, takes out the test pressure plate, sealing gasket and test pressure-sensitive paper on the tooling in turn, and lets the test pressure-sensitive paper stand for 29-31 minutes to allow the color to fully display, so that the pressure distribution can be observed and measured more clearly later.

[0011] Furthermore, the software calibration in S4 specifically includes: Open the scanner cover, place the color plate as required, and close the scanner cover to keep it in the correct direction; Open the FPD8010 calibration software, select File, click the Calibration sheet, select Calibration sheet scan, and then select "Yes". The system starts calibration; After the calibration is completed, the calibration interface will appear. If the calibration interface does not appear, return to the above steps and re-calibrate. After the calibration is completed, remove the color plate and put it in a special bag.

[0012] Furthermore, the measuring of the graphic in S5 specifically includes, when measurement is required, opening the measurement software and selecting New [Standard] to create a new measurement; In the pop-up interface, enter the name, measurement date, measurement method, environment, display clarity and other information, and click OK after the settings are completed; Place the test pressure-sensitive paper with the glossy side facing up within the scannable range, close the dedicated cover, and click Scanning to start scanning. Select the scanned graphic on the right and click it to display it in the box on the left and confirm. Select the Zoom option in the upper right corner, then select the Fill option, click the Confirm button to change the graphic size to the size of an A4 paper, and select the measurement point to measure the graphic.

[0013] Furthermore, before S1, the method further includes Cut the appropriate test pressure-sensitive paper and prepare the sealing ring to be tested, making sure that the measurement range of the test pressure-sensitive paper matches the range set by the software; connect the device power supply, various data transmission cables, and the device to the computer, turn on the scanner power switch, and observe whether the green light is on to confirm that all connection cables and functions are normal.

[0014] Furthermore, it also includes rights management and data encryption; The authority management includes creating a database table to store user information, including user name, password, administrator, and general operator; using a hash encryption algorithm to store the password field; enhancing password security to prevent the leakage of plain text passwords. Based on the administrator and general operator, the operation authority is clearly defined. The administrator has the system setting, data deletion, and user management authority; the general operator is only assigned the measurement start and data viewing authority; a permission verification module is developed in the system background. When the user performs an operation, the permission verification module automatically compares the user role with the operation authority. If there is a mismatch, the operation is blocked and the prompt is insufficient authority. Develop a user login interface. After the user enters their username and password, the system searches the user information database for verification. If the username and password match, the system loads the corresponding permission interface based on the user role, ensuring that the user can only see and use the permitted function modules. Data encryption involves evaluating various encryption algorithms, such as AES and RSA. Taking into account the characteristics of the measurement data and system performance requirements, the AES symmetric encryption algorithm was selected; its fast encryption and decryption speeds make it suitable for encrypting large amounts of measurement data. An encryption key is generated, with a key length determined based on security requirements. The key is securely stored in the system's key management module, with strict access control implemented to ensure that only authorized system management programs can read and use the key. When measurement data is generated and ready to be stored in a system file or database, the encryption function is called to encrypt the data using the selected AES algorithm and key. The encrypted data is stored in ciphertext to prevent sensitive information from being leaked after the data is stolen during storage. When the user needs to view the measurement data, the system first verifies the user's permissions. After confirming that the user has permission to access the data, it obtains the key from the key management module, decrypts the stored ciphertext data, and presents the decrypted plaintext data to the user.

[0015] The present invention has the following beneficial effects: 1. By using the test pressure-sensitive paper and the upper and lower test pressure plates of the tooling, the sealing gasket leaves a pressure distribution mark on the pressure-sensitive paper by applying torque. Subsequent color development and scanning measurement can accurately obtain the pressure distribution of various parts of the sealing gasket. This makes up for the defects of traditional bubble method and pressure test method that cannot accurately measure the details of pressure distribution. It helps to deeply analyze the cause of sealing failure of the sealing gasket and makes it more accurate to measure the sealing performance of the sealing gasket.

[0016] 2. Compared to helium mass spectrometry leak detection, which requires specialized, expensive equipment, complex operations, and stringent testing environments, the device and method of the present invention are simpler to operate, requiring only common equipment such as torque wrenches and scanners. Without the high testing costs, they are more suitable for widespread application in various production scenarios. 3. Through rights management and data encryption measures, the security and reliability of measurement data are guaranteed. Rights management clarifies the different permissions of administrators and ordinary operators to prevent data from being accessed and tampered with at will. The AES symmetric encryption algorithm is used to encrypt and store measurement data, effectively protecting sensitive information during data storage. Only authorized users can view the data, improving the security of data management. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a specific embodiment of the present invention.

[0018] Figure 2 This is a structural diagram showing that the test pressure-sensitive paper and the sealing gasket are placed sequentially from bottom to top on the test pressure plate under the tooling.

[0019] Figures 3 to 5 Schematic diagram of the test pressure-sensitive paper after the experiment. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings and examples: In the description of the present invention, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0022] like Figures 1 to 2 As shown, a device for measuring the sealing performance of a sealing gasket includes a test bench 1, on which a lower test platen 2 and an upper test platen 3 are provided, a test pressure-sensitive paper 5 is provided between the lower test platen 2 and the upper test platen 3, and the upper test platen 3 is used to apply downward pressure.

[0023] A column 6 is provided at the lower end of the lower test plate 2 of the tooling, and the lower end of the column 6 is detachably connected to the test bench 1 through a positioning seat 7; Limiting studs 8 are provided on both upper ends of the lower test plate 2 of the tooling. Each of the limiting studs 8 is used to limit the sealing gasket. Both sides of the upper test plate 3 of the tooling are sleeved on the limiting studs 8. Two locking nuts 9 are located above the upper test plate 3 of the tooling and are sleeved on each of the limiting studs 8 to apply torque to squeeze the sealing gasket between the lower test plate 2 of the tooling and the upper test plate 3 of the tooling.

[0024] Example 1, a method for measuring the sealing performance of a gasket, comprising the following steps: S1: Place the sealing gasket 10 to be tested between the lower test plate 2 and the upper test plate 3 of the tooling; S2: Apply torque to leave pressure distribution marks on the pressure-sensitive paper; S3: Remove the pressure-sensitive paper and wait for color development; S4: software calibration; S5: measure the graphics; S6: After the measurement is completed, save the measurement results and output the report.

[0025] Example 2, a method for measuring the sealing performance of a gasket, comprising the following steps: S1: Place the sealing gasket 10 to be tested between the lower test platen 2 and the upper test platen 3 of the tooling; in this embodiment, S1 specifically includes placing the test pressure-sensitive paper 5 with the smooth side facing down on the lower test platen 2 of the tooling, placing the sealing ring of the sealing gasket to be tested on the test pressure-sensitive paper 5, and at the same time, sleeve the sealing gasket and the two sides of the upper test platen 3 of the tooling on each limiting stud 8 from top to bottom, and finally sleeve the two locking nuts 9 on each limiting stud 8 respectively.

[0026] S2: Apply torque to leave a pressure distribution mark on the pressure-sensitive paper. In this embodiment, the torque is applied by tightening the locking nut 9 as required with a torque wrench and maintaining the torque for 4-5 minutes so that the sealing gasket is fully pressurized, leaving a pressure distribution mark on the test pressure-sensitive paper 5.

[0027] S3: Remove the pressure-sensitive paper and wait for the color to develop; in this embodiment, the operator removes the locking nut 9, takes out the test pressure plate 3, sealing gasket and test pressure-sensitive paper 5 on the tooling in turn, and lets the test pressure-sensitive paper 5 stand for 29-31 minutes to allow the color to fully display, so that the pressure distribution can be observed and measured more clearly later.

[0028] S4: software calibration; S5: measure the graphics; S6: After the measurement is completed, save the measurement results and output the report.

[0029] Example 3, a method for measuring the sealing performance of a gasket, comprising the following steps: Cut the appropriate test pressure-sensitive paper 5, prepare the sealing ring to be tested, and ensure that the measurement range of the test pressure-sensitive paper 5 is consistent with the range set by the software; connect the device power supply, various data transmission lines, and connect the device to the computer, turn on the scanner power switch, and observe whether the green light is on to confirm that all connection lines and functions are normal.

[0030] S1: Place the sealing gasket 10 to be tested between the lower test platen 2 and the upper test platen 3 of the tooling; in this embodiment, S1 specifically includes placing the test pressure-sensitive paper 5 with the smooth side facing down on the lower test platen 2 of the tooling, placing the sealing ring of the sealing gasket to be tested on the test pressure-sensitive paper 5, and at the same time, sleeve the sealing gasket and the two sides of the upper test platen 3 of the tooling on each limiting stud 8 from top to bottom, and finally sleeve the two locking nuts 9 on each limiting stud 8 respectively.

[0031] S2: Apply torque to leave a pressure distribution mark on the pressure-sensitive paper. In this embodiment, the torque is applied by tightening the locking nut 9 as required with a torque wrench and maintaining the torque for 4-5 minutes so that the sealing gasket is fully pressurized, leaving a pressure distribution mark on the test pressure-sensitive paper 5.

[0032] S3: Remove the pressure-sensitive paper and wait for the color to develop; in this embodiment, the operator removes the locking nut 9, takes out the test pressure plate 3, sealing gasket and test pressure-sensitive paper 5 on the tooling in turn, and lets the test pressure-sensitive paper 5 stand for 29-31 minutes to allow the color to fully display, so that the pressure distribution can be observed and measured more clearly later.

[0033] S4: Software calibration; in this embodiment, the calibration software uses FPD8010. The specific operations include opening the scanner cover, placing the color plate as required, and closing the scanner cover to keep it in the correct direction; Open the calibration (FPD8010) software, select File, click on the Calibration sheet, select Calibration sheet scan, and then select "Yes". The system will start calibration. After the calibration is completed, the calibration interface will appear. If the calibration interface does not appear, return to the above steps and re-calibrate. After the calibration is completed, remove the color plate and put it in a special bag.

[0034] S5: Measure the graphics; specifically, when measurement is required, open the measurement software and select New [Standard] to create a new measurement; In the pop-up interface, enter the name, measurement date, measurement method, environment, display clarity and other information, and click OK after the settings are completed; Place the test pressure-sensitive paper 5 with the glossy side facing up within the scannable range, cover it with the dedicated cover, and click Scanning to start scanning. Select the scanned graphic on the right and click it to display it in the box on the left and confirm. Select the Zoom option in the upper right corner, then select the Fill option, click the Confirm button to change the graphic size to the size of an A4 paper, and select the measurement point to measure the graphic.

[0035] S6: After the measurement is completed, save the measurement results and output the report.

[0036] Example 4, a method for measuring the sealing performance of a gasket, comprising the following steps: Cut the appropriate test pressure-sensitive paper 5, prepare the sealing ring to be tested, and ensure that the measurement range of the test pressure-sensitive paper 5 is consistent with the range set by the software; connect the device power supply, various data transmission lines, and connect the device to the computer, turn on the scanner power switch, and observe whether the green light is on to confirm that all connection lines and functions are normal.

[0037] S1: Place the sealing gasket 10 to be tested between the lower test platen 2 and the upper test platen 3 of the tooling; in this embodiment, S1 specifically includes placing the test pressure-sensitive paper 5 with the smooth side facing down on the lower test platen 2 of the tooling, placing the sealing ring of the sealing gasket to be tested on the test pressure-sensitive paper 5, and at the same time, sleeve the sealing gasket and the two sides of the upper test platen 3 of the tooling on each limiting stud 8 from top to bottom, and finally sleeve the two locking nuts 9 on each limiting stud 8 respectively.

[0038] S2: Apply torque to leave a pressure distribution mark on the pressure-sensitive paper. In this embodiment, the torque is applied by tightening the locking nut 9 as required with a torque wrench and maintaining the torque for 4-5 minutes so that the sealing gasket is fully pressurized, leaving a pressure distribution mark on the test pressure-sensitive paper 5.

[0039] S3: Remove the pressure-sensitive paper and wait for the color to develop; in this embodiment, the operator removes the locking nut 9, takes out the test pressure plate 3, sealing gasket and test pressure-sensitive paper 5 on the tooling in turn, and lets the test pressure-sensitive paper 5 stand for 29-31 minutes to allow the color to fully display, so that the pressure distribution can be observed and measured more clearly later.

[0040] S4: Software calibration; in this embodiment, the calibration software uses FPD8010. The specific operations include opening the scanner cover, placing the color plate as required, and closing the scanner cover to keep it in the correct direction; Open the calibration (FPD8010) software, select File, click on the Calibration sheet, select Calibration sheet scan, and then select "Yes". The system will start calibration. After the calibration is completed, the calibration interface will appear. If the calibration interface does not appear, return to the above steps and re-calibrate. After the calibration is completed, remove the color plate and put it in a special bag.

[0041] S5: Measure the graphics; specifically, when measurement is required, open the measurement software and select New [Standard] to create a new measurement; In the pop-up interface, enter the name, measurement date, measurement method, environment, display clarity and other information, and click OK after the settings are completed; Place the test pressure-sensitive paper 5 with the glossy side facing up within the scannable range, cover it with the dedicated cover, and click Scanning to start scanning. Select the scanned graphic on the right and click it to display it in the box on the left and confirm. Select the Zoom option in the upper right corner, then select the Fill option, click the Confirm button to change the graphic size to the size of an A4 paper, and select the measurement point to measure the graphic.

[0042] S6: After the measurement is completed, save the measurement results and output the report.

[0043] In this embodiment, rights management and data encryption are also included; The authority management includes creating a database table to store user information, including user name, password, administrator, and general operator; using a hash encryption algorithm to store the password field; enhancing password security to prevent the leakage of plain text passwords. Based on the administrator and general operator, the operation authority is clearly defined. The administrator has the system setting, data deletion, and user management authority; the general operator is only assigned the measurement start and data viewing authority; a permission verification module is developed in the system background. When the user performs an operation, the permission verification module automatically compares the user role with the operation authority. If there is a mismatch, the operation is blocked and the prompt is insufficient authority. Develop a user login interface. After the user enters their username and password, the system searches the user information database for verification. If the username and password match, the system loads the corresponding permission interface based on the user role, ensuring that the user can only see and use the permitted function modules. Data encryption involves evaluating multiple encryption algorithms, such as the Advanced Encryption Standard (AES) and RSA. Taking into account the characteristics of the measurement data and system performance requirements, the AES symmetric encryption algorithm was selected; its fast encryption and decryption speeds make it suitable for encrypting large amounts of measurement data. An encryption key is generated, with a key length determined based on security requirements. The key is securely stored in the system's key management module, with strict access control implemented to ensure that only authorized system management programs can read and use the key. When measurement data is generated and ready to be stored in a system file or database, the encryption function is called to encrypt the data using the selected AES algorithm and key. The encrypted data is stored in ciphertext to prevent sensitive information from being leaked after the data is stolen during storage. When the user needs to view the measurement data, the system first verifies the user's permissions. After confirming that the user has permission to access the data, it obtains the key from the key management module, decrypts the stored ciphertext data, and presents the decrypted plaintext data to the user.

[0044] In the method for measuring the sealing performance of a sealing gasket of the present invention, Example 4 is the best example.

[0045] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art through logical analysis, reasoning, or limited experimentation based on the concepts of the present invention and the prior art should be within the scope of protection defined by the claims.

Claims

1. A device for measuring the sealing performance of a gasket, characterized in that: The invention comprises a test bench (1), wherein a lower test platen (2) and an upper test platen (3) are provided on the test bench (1), a test pressure-sensitive paper (5) is provided between the lower test platen (2) and the upper test platen (3), and the upper test platen (3) is used for applying downward pressure.

2. The device for measuring the sealing performance of a gasket according to claim 1, wherein: A column (6) is provided at the lower end of the tooling lower test plate (2), and the lower end of the column (6) is detachably connected to the test bench (1) via a positioning seat (7); Limiting studs (8) are provided on both upper ends of the two sides of the tooling lower test plate (2), and each of the limiting studs (8) is used to limit the sealing gasket, and both sides of the tooling upper test plate (3) are sleeved on each of the limiting studs (8); Two locking nuts (9) are located above the tooling upper test plate (3) and are sleeved on each of the limit studs (8) for applying a torsional force to squeeze the sealing gasket between the tooling lower test plate (2) and the tooling upper test plate (3).

3. A method for measuring the sealing performance of a sealing gasket as claimed in claim 2, characterized in that: The following steps are included S1: placing the sealing gasket to be tested (10) between the lower test platen (2) and the upper test platen (3) of the tooling; S2: Apply torque to leave pressure distribution marks on the pressure-sensitive paper; S3: Remove the pressure-sensitive paper and wait for color development; S4: software calibration; S5: measure the graphics; S6: After the measurement is completed, save the measurement results and output the report.

4. The method for measuring the sealing performance of a sealing gasket according to claim 3, wherein: Specifically, the test pressure-sensitive paper (5) is placed with the smooth side facing downward on the test pressure plate (2) on the tooling, the sealing gasket to be tested is placed on the test pressure-sensitive paper (5), and at the same time, the sealing gasket and both sides of the test pressure plate (3) on the tooling are placed on each limit stud (8) from top to bottom, and finally, two locking nuts (9) are placed on each limit stud (8) respectively.

5. The method for measuring the sealing performance of a sealing gasket according to claim 4, wherein: Specifically, the locking nut (9) is tightened as required by a torque wrench to load the torque, and maintained for 4-5 minutes, so that the sealing gasket is fully pressurized and a pressure distribution mark is left on the test pressure-sensitive paper (5).

6. The method for measuring the sealing performance of a sealing gasket according to claim 5, wherein: Specifically, in S3, the operator removes the locking nut (9), takes out the test pressure plate (3), the sealing gasket and the test pressure-sensitive paper (5) on the tooling in turn, and allows the test pressure-sensitive paper (5) to stand for 29-31 minutes to allow the color to fully display, so that the pressure distribution can be observed and measured more clearly later.

7. The method for measuring the sealing performance of a sealing gasket according to claim 6, wherein: The software calibration in S4 specifically includes: opening the scanner cover, placing the color plate as required, and closing the scanner cover to keep it in the correct direction; Open the calibration software and the system starts calibration; After calibration, remove the color plate and place it in a special bag.

8. The method for measuring the sealing performance of a sealing gasket according to claim 7, wherein: The measuring of the graphic in S5 specifically includes, when measurement is required, opening the measurement software and creating a new measurement; In the pop-up interface, enter the name, measurement date, measurement method, environment and display clarity information, and click OK after completing the settings; Place the test pressure-sensitive paper (5) with the light side facing upward within the scannable range, cover it with a special cover, and perform scanning imaging; Select the scanned graphic on the right and click it to display it in the box on the left and confirm. Select the Zoom option in the upper right corner, then select the Fill option, click the Confirm button to change the graphic size to the size of an A4 paper, and select the measurement point to measure the graphic.

9. The method for measuring the sealing performance of a sealing gasket as claimed in claim 8, wherein The S1 also includes Cut out the appropriate seal ring to be tested and make sure that the measuring range of the pressure-sensitive paper (5) is consistent with the range set by the software; connect the power supply of the device, the data transmission lines, and the device to the computer, turn on the scanner power switch, and observe whether the green light is on to confirm that the connection lines and functions are normal.

10. The method for measuring the sealing performance of a sealing gasket according to claim 9, wherein: It also includes rights management and data encryption; The authority management includes creating a database table for storing user information, including user name, password, administrator, and general operator; using a hash encryption algorithm to store the password field; clarifying the operation authority based on the administrator and general operator, with the administrator having system settings, data deletion, and user management authority; and general operators only having measurement start and data viewing authority; developing an authority verification module in the system background, and when a user performs an operation, the authority verification module automatically compares the user role with the operation authority. If there is a mismatch, the operation is blocked and a prompt is prompted that the authority is insufficient; Develop a user login interface. After the user enters their username and password, the system searches the user information database for verification. If the username and password match, the system loads the corresponding permission interface based on the user role, ensuring that the user can only see and use the permitted function modules. The data encryption includes evaluating multiple encryption algorithms and selecting the AES symmetric encryption algorithm; Generate an encryption key with a key length determined based on security requirements, securely store the key in the system's key management module, and set strict permission controls on key access. Only authorized system management programs can read and use the key. When measurement data is generated and ready to be stored in a system file or database, the encryption function is called to encrypt the data using the selected AES algorithm and key. The encrypted data is stored in ciphertext to prevent sensitive information from being leaked after the data is stolen during storage. When a user needs to view measurement data, the system first verifies the user's permissions. After confirming that the user has permission to access the data, it obtains the key from the key management module, decrypts the stored ciphertext data, and presents the decrypted plaintext data to the user.

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