Test system and test method of sealing gasket

Abstract

The invention discloses a testing system and a testing method of a sealing gasket, belongs to the technical field of sealing gasket testing, and can effectively reduce the testing cost of the sealing gasket. The testing system comprises a testing device, a liquid supply device, a gas supply pipeline and a first control valve, the testing device comprises a middle frame and a diaphragm, the middle frame comprises an annular frame body and a plate body, the plate body is fixed to the inner surface of the frame body by a circle, the diaphragm is arranged at at least one axial end of the frame body, and a first cavity is defined by the diaphragm, the frame body and the plate body; a to-be-tested sealing gasket is arranged between the diaphragm and the frame body, and the middle frame is provided with an inlet communicated with the first cavity; the liquid supply device comprises a liquid container, the liquid container is provided with an outlet, and the outlet is connected with the inlet through a first pipeline; the gas supply pipeline is used for supplying gas to the first cavity, and the first control valve is arranged on the gas supply pipeline.

Description

Technical Field

[0001] This invention relates to the field of gasket testing technology, specifically to a testing system and a testing method for gaskets. Background Technology

[0002] In electrolytic cells, gaskets are a fundamental and crucial sealing element, and their performance directly affects the sealing reliability and operational efficiency of the entire system. Currently, the sealing performance of gaskets is typically tested by installing the gasket in the electrolytic cell and testing the entire unit. This testing method requires the electrolytic cell to be under normal operating conditions, which not only consumes a large amount of electrical energy but also requires manpower and materials to maintain equipment operation, resulting in high testing costs. Summary of the Invention

[0003] This application provides a testing system and a testing method for gaskets, which can effectively reduce the testing cost of gaskets.

[0004] To achieve the above objectives, the embodiments of this application disclose the following technical solutions: In a first aspect, embodiments of this application provide a testing system, comprising: a testing device, a liquid supply device, a gas supply pipeline, and a first control valve. The testing device includes a middle frame and a diaphragm. The middle frame includes an annular frame body and a plate body. The plate body is fixed around the inner surface of the frame body. The diaphragm is disposed at at least one axial end of the frame body. The diaphragm, the frame body, and the plate body form a first cavity. A sealing gasket to be tested is arranged between the diaphragm and the frame body. The middle frame has an inlet communicating with the first cavity. The liquid supply device includes a liquid container with an outlet. The outlet and the inlet are connected through the first pipeline. The gas supply pipeline is used to supply gas to the first cavity. The first control valve is disposed on the gas supply pipeline.

[0005] This setup allows for gasket testing by supplying gas into the first cavity formed by the diaphragm, frame, and plate via the gas supply pipeline and the first control valve. This simulates the high-pressure environment created by the gas generated during electrolysis under normal operating conditions of an electrolytic cell, thus enabling effective testing of the gasket's sealing reliability without conducting an electrolysis reaction. This eliminates the electricity and labor costs associated with electrolysis.

[0006] In addition, since no electrolysis reaction is carried out, the liquid in the container enters the first chamber through the outlet, the first pipeline and the inlet, and is only used to maintain the liquid phase environment required for the test. The liquid itself is not consumed or is almost not consumed due to electrolysis, which can reduce the cost of liquid input.

[0007] In some possible embodiments of the first aspect, the liquid supply device includes a heater for heating the liquid in the container.

[0008] In some possible embodiments of the first aspect, the middle frame has a discharge port communicating with the first cavity; the liquid container has an inlet connected to the discharge port via a second conduit.

[0009] In some possible implementations of the first aspect, the gas supply line is connected to the second line.

[0010] In some possible embodiments of the first aspect, the liquid container has a liquid inlet, and a second control valve is provided at the liquid inlet.

[0011] In some possible embodiments of the first aspect, the liquid supply device includes a heater for heating the liquid in the liquid container; The liquid container is equipped with a first pressure detection device; The testing system also includes a control module, which is electrically connected to a first pressure detection device, a first control valve, and a second control valve. The control module is configured to control the first control valve to open and / or control the second control valve to open when the pressure detected by the first pressure detection device is greater than or equal to a first preset pressure.

[0012] In some possible embodiments of the first aspect, the liquid supply device includes a control pump disposed on the first pipeline.

[0013] In some possible embodiments of the first aspect, the liquid supply device includes a heater for heating the liquid in the liquid container; The liquid container is equipped with a first pressure detection device; The testing system also includes a control module, which is electrically connected to the first pressure detection device, the control pump, and the heater. The control module is configured to shut off the power to the control pump and the heater when the pressure in the liquid container is less than or equal to a second preset pressure.

[0014] In some possible implementations of the first aspect, the test system also includes an alarm device; The control module is electrically connected to the alarm device. The control module is configured to control the alarm device to sound an alarm when the pressure detected by the first pressure detection device is greater than or equal to the first preset pressure, or less than or equal to the second preset pressure. The first preset pressure is greater than the second preset pressure.

[0015] In some possible embodiments of the first aspect, the liquid supply device includes a heater for heating the liquid in the liquid container; the liquid container is provided with a first temperature detection device. The testing system also includes a control module, which is electrically connected to the first temperature detection device and the heater. The control module is configured to control the heater to stop working when the liquid temperature detected by the first temperature detection device is greater than or equal to a first preset temperature, and to control the heater to restart when the liquid temperature detected by the first temperature detection device is less than or equal to a second preset temperature.

[0016] In some possible implementations of the first aspect, the plate is conductive.

[0017] Secondly, embodiments of this application provide a method for testing a sealing gasket, which uses the testing system of any of the technical solutions in the first aspect to perform a sealing performance test on the sealing gasket. The method includes the following steps: Open the first control valve to inject gas into the first chamber; inject liquid into the first chamber through the first pipeline.

[0018] Since the testing method for the sealing gasket provided in this application includes the testing system described in any of the above technical solutions, both can solve the same technical problem and achieve the same technical effect. Further details will not be provided here.

[0019] In some possible embodiments of the second aspect, the liquid supply device includes a heater for heating the liquid in the liquid container; Prior to the step of injecting liquid into the first cavity through the first conduit, the testing method for the sealing gasket includes: Turn on the heater to heat the liquid in the container.

[0020] In some possible embodiments of the second aspect, the liquid supply device further includes a control pump disposed on the first pipeline; The step of injecting liquid into the first cavity through the first conduit includes: Start the control pump to inject liquid into the first chamber through the first pipeline.

[0021] In some possible embodiments of the second aspect, the liquid supply device includes a heater for heating the liquid in the liquid container; After the control pump and heater are started, the testing methods for the gaskets include: Detecting the pressure inside the liquid container; When the pressure inside the liquid container is less than or equal to the second preset pressure, turn off the power to the control pump and heater.

[0022] In some possible implementations of the second aspect, the testing method for the sealing gasket after the heater is started includes: Detecting the pressure inside the liquid container; When the pressure inside the liquid container is less than or equal to the second preset pressure, or when the pressure inside the liquid container is greater than or equal to the first preset pressure, the control test system will alarm; wherein, the first preset pressure is greater than the second preset pressure.

[0023] In some possible embodiments of the second aspect, the liquid container has a filling port, at which a second control valve is provided; the testing method for the sealing gasket includes: Detecting the pressure inside the liquid container; When the pressure inside the liquid container is greater than or equal to the first preset pressure, the first control valve is opened, and / or the second control valve is opened.

[0024] In some possible implementations of the second aspect, after the step of activating the heater to heat the liquid in the container, the method for testing the sealing gasket includes: The temperature of the liquid in the container is detected. When the temperature of the liquid in the container is greater than or equal to the first preset temperature, the heater is controlled to stop working. The temperature of the liquid in the container is detected. When the temperature of the liquid in the container is less than or equal to the second preset temperature, the heater is restarted. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a test system provided in some embodiments of this application.

[0026] Figure 2 for Figure 1 The diagram shows a partial cross-sectional view of the test system along line AA.

[0027] Figure 3 for Figure 2 The enlarged view of the circled part at point A of the structure shown.

[0028] Figure 4 for Figure 2 A schematic diagram of the middle frame in the structure shown.

[0029] Figure 5 for Figure 1 A schematic diagram of part of the structure of the test system shown.

[0030] Figure 6 for Figure 2 The enlarged view of the part of the structure shown in the frame at point B.

[0031] Figure 7 for Figure 2 The enlarged view of the circled part at point C of the structure shown.

[0032] Figure 8This is a flowchart illustrating a testing method for a sealing gasket provided in some embodiments of this application.

[0033] Figure 9 This is a flowchart illustrating a testing method for a sealing gasket provided in some embodiments of this application. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] In the embodiments of this application, the terms "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplarily" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplarily" or "for example" is intended to present the relevant concepts in a specific manner.

[0036] In the description of the embodiments of this application, the term "multiple" means two or more.

[0037] In the description of the embodiments of this application, the term "and / or" refers to and covers any and all possible combinations of one or more of the associated listed items. The term "and / or" describes an association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "or" relationship.

[0038] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, "linking" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0039] In the description of embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0040] As used herein, “parallel” and “perpendicular” include the described situation and situations that are similar to the described situation, within an acceptable deviation range, which is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, “parallel” includes absolute parallelism and approximate parallelism, where the acceptable deviation range for approximate parallelism can be, for example, within ±10°; “perpendicular” includes absolute perpendicularity and approximate perpendicularity, where the acceptable deviation range for approximate perpendicularity can also be, for example, within ±10°.

[0041] In electrolytic cells, gaskets are a fundamental and crucial sealing element, and their performance directly affects the sealing reliability and operating efficiency of the entire system. These gaskets are typically made of materials such as rubber or polytetrafluoroethylene (PTFE) and are used to seal between two adjacent middle frames of the electrolytic cell.

[0042] Currently, the quality inspection of gaskets in related technologies generally focuses on physical indicators such as appearance integrity, material hardness, tensile strength, and resilience. These inspections are usually completed through visual inspection or local sampling tests. However, this type of inspection ignores the actual operating conditions of gaskets under rated pressure, high temperature, and strong alkaline media for extended periods, and therefore cannot effectively evaluate the sealing performance of gaskets under actual working conditions.

[0043] To address the aforementioned technical issues, the sealing gaskets are typically tested by installing them within the electrolytic cell and testing the entire unit. This method requires the electrolytic cell to be in normal operating condition, consuming significant amounts of electrical energy and necessitating manpower and materials to maintain operation, resulting in high testing costs.

[0044] Please see Figures 1-3 ,in, Figure 1 A schematic diagram of the structure of a test system 100 provided in some embodiments of this application; Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure of a portion of the test system 100 shown along line AA; Figure 3 for Figure 2 The diagram shows an enlarged view of the circled portion at point A. This application provides a testing system 100, including a testing device 10, a liquid supply device 20, a gas supply pipeline 30, and a first control valve 40.

[0045] The testing device 10 includes a middle frame 101 and a diaphragm 102. The middle frame 101 includes an annular frame 1011 and a plate 1012, with the plate 1012 fixed to the inner surface of the frame 1011.

[0046] A diaphragm 102 is disposed at at least one axial end of the frame 1011; that is, a diaphragm 102 may be disposed at one axial end of the frame 1011 or at both ends of the frame 1011. The diaphragm 102, the frame 1011, and the plate 1012 form a first cavity 103. When diaphragms 102 are disposed at both axial ends of the frame 1011, each diaphragm 102, together with the frame 1011 and the plate 1012, forms a cavity, that is, the first cavity 103 includes a first sub-cavity 1031 and a second sub-cavity 1032.

[0047] A gasket 50 to be tested is disposed between the diaphragm 102 and the frame 1011. Exemplarily, the gasket 50 to be tested can be a single gasket structure or a double gasket structure (cathode gasket 501 and anode gasket 502). The shape of the gasket 50 to be tested can be, but is not limited to, a rectangular ring or a circular ring; the material of the gasket 50 to be tested can be, but is not limited to, rubber and PTFE gaskets.

[0048] The middle frame 101 has an inlet 1013 that communicates with the first cavity 103. Figures 1-3 (Not shown in the image).

[0049] The liquid supply device 20 includes a liquid container 201 with an outlet 2011 connected to an inlet 1013 via a first pipe 202; a gas supply pipe 30 supplies gas to the first cavity 103, and a first control valve 40 is provided on the gas supply pipe 30. Exemplarily, the gas can be a compressed inert gas such as nitrogen or helium. However, this application is not limited to this. In other embodiments, the gas can also be compressed air.

[0050] With this configuration, during gasket testing, gas can be supplied to the first cavity 103, formed by the diaphragm 102, frame 1011, and plate 1012, through the gas supply pipeline 30 and the first control valve 40. This simulates the pressure exerted on the gasket by the high-pressure environment created by the gas generated by the electrolytic reaction under normal operating conditions of the electrolytic cell. This allows for effective testing of the gasket's sealing reliability without the need for an electrolytic reaction. Consequently, the electricity costs associated with the electrolytic reaction can be eliminated.

[0051] In addition, since no electrolysis reaction is carried out, the liquid in the liquid container 201 enters the first chamber 103 through the outlet 2011, the first pipeline 202 and the inlet 1013, and is only used to maintain the liquid phase environment required for the test. The liquid itself is not consumed or is almost not consumed due to electrolysis, which can also reduce the cost of liquid input.

[0052] In some embodiments, the liquid is an alkaline liquid. This simulates the alkaline environment of an actual electrolytic cell during operation, making the performance testing of the sealing gasket closer to actual working conditions, thereby improving the reliability of the test results. It should be noted that in this case, all components in contact with the liquid are made of alkali-resistant materials (316L / 310S / nickel, etc.), and are designed to withstand pressures ≥2MPa. Of course, this application is not limited to this. In other embodiments, the liquid may also be pure water.

[0053] Please see Figure 1 In some embodiments, the middle frame 101 has a discharge port 1014 communicating with the first cavity 103; the liquid container 201 has an inlet 2013, which is connected to the discharge port 1014 via a second pipe 204. In this way, the liquid used during the test can return from the first cavity 103 to the liquid container 201 via the discharge port 1014 and the second pipe 204, enabling liquid recycling and thus more realistically simulating the actual circulation conditions of the liquid in the electrolytic cell, improving the reliability of the test results.

[0054] Please see Figure 1 In some embodiments, the gas supply line 30 is connected to the second line 204. In this way, the second line 204 can be used as a shared fluid channel to integrate the gas supply and liquid return paths, reducing individual pipeline connection points, thereby reducing the complexity of the test system 100 and the potential risk of leakage.

[0055] Of course, this application is not limited to this. In other embodiments, the gas supply line 30 may be directly connected to the internal space of the liquid container 201.

[0056] Please see Figure 1In some embodiments, a fourth control valve 2041 is provided on the second pipeline 204, and the fourth control valve 2041 is located on the section of the second pipeline 204 that connects the gas supply pipeline 30 and the inlet 2013. Thus, closing the fourth control valve 2041 disconnects the connection between the second pipeline 204 and the liquid container 201. This facilitates the independent replacement of the liquid container 201.

[0057] Please see Figure 1 And see Figure 3 and Figure 4 ,in, Figure 4 for Figure 2 The diagram shows the structure of the middle frame 101. In some embodiments, the inlet 1013 includes a first sub-inlet 1013a and a second sub-inlet 1013b. The first sub-inlet 1013a is connected to the first sub-cavity 1031, and the second sub-inlet 1013b is connected to the second sub-cavity 1032.

[0058] The first sub-inlet 1013a is located at one end of the middle frame 101 in the first direction K1, and the second sub-inlet 1013b is located at the other end of the middle frame 101 in the first direction K1, and the first sub-inlet 1013a of each middle frame 101 is at the same end in the first direction K1. For example, the first direction K1 is perpendicular to the thickness direction and the gravity direction of the frame 1011.

[0059] The first pipeline 202 includes a first pipe 2021 and a second pipe 2022. One end of the first pipe 2021 is connected to the outlet 2011 of the liquid container 201, and the other end of the first pipe 2021 is connected to the second pipe 2022. The second pipe 2022 extends in a first direction K1. Each first sub-inlet 1013a is connected to one end of the second pipe 2022, and each second sub-inlet 1013b is connected to the other end of the second pipe 2022.

[0060] This configuration, by placing the first sub-inlet 1013a and the second sub-inlet 1013b at opposite ends of the middle frame 101 in the first direction K1, and utilizing the symmetrical flow-dividing pipeline structure constructed by the first pipe 2021 and the second pipe 2022, allows the liquid flowing out of the liquid container 201 to be evenly distributed to both ends of the second pipe 2022, and then flow into the first sub-cavity 1031 and the second sub-cavity 1032 of each middle frame 101 via the first sub-inlet 1013a and the second sub-inlet 1013b. This effectively simulates the symmetrical inflow and outflow of electrolyte from both sides in an actual electrolytic cell, eliminating test deviations caused by asymmetrical flow paths, thereby improving the accuracy and reliability of the test results.

[0061] Of course, this application is not limited to this. In other embodiments, the first pipeline 202 may also include only the first pipe 2021, with the first sub-inlet 1013a and the second sub-inlet 1013b located at the same end in the first direction K1, and both the first sub-inlet 1013a and the second sub-inlet 1013b connected to the first pipe 2021.

[0062] In some embodiments, each of the first sub-inlet 1013a and the second sub-inlet 1013b is connected to the first pipeline 202 via a liquid inlet hose 104. In this way, the flexibility and deformability of the liquid inlet hose 104 can be used to accommodate the relative displacement or installation deviation between the middle frame 101 and the first pipeline 202, thereby avoiding stress concentration or interface leakage problems that may be caused by rigid connections and ensuring the stability of the liquid supply process.

[0063] For example, each of the first sub-inlet 1013a and the second sub-inlet 1013b is connected to the second pipe 2022 of the first pipe 202 via the inlet hose 104.

[0064] In some embodiments, the discharge port 1014 includes a first sub-discharge port 1014a and a second sub-discharge port 1014b. The first sub-discharge port 1014a is connected to the first sub-cavity 1031, and the second sub-discharge port 1014b is connected to the second sub-cavity 1032. Each of the first sub-discharge port 1014a and the second sub-discharge port 1014b is connected to the second pipeline 204.

[0065] The first sub-discharge port 1014a is located at one end of the middle frame 101 in the first direction K1, and the second sub-discharge port 1014b is located at the other end of the middle frame 101 in the first direction K1.

[0066] This effectively simulates the actual electrolytic cell where the electrolyte flows out symmetrically from both sides, further eliminating test deviations caused by asymmetrical flow paths, thereby improving the accuracy and reliability of test results.

[0067] In some embodiments, each of the first sub-discharge ports 1014a and the second sub-discharge ports 1014b is connected to the second conduit 204 via a liquid discharge hose 105. This allows the flexibility and deformability of the liquid discharge hose 105 to accommodate relative displacement or installation deviations between the middle frame 101 and the second conduit 204, thereby avoiding stress concentration or interface leakage problems that may be caused by rigid connections and ensuring the stability of the liquid supply process.

[0068] Please return to the reference. Figure 1In some embodiments, the liquid supply device 20 includes a control pump 203, which is disposed on the first pipeline 202. This allows for precise control of the flow rate and pressure of the liquid supplied from the liquid container 201 to the first cavity 103 via the control pump 203, simulating the liquid conditions in actual operation of the electrolytic cell and improving the accuracy and reliability of the gasket testing.

[0069] For example, in Figure 1 In the illustrated embodiment, the control pump 203 is disposed on the first pipe 2021. However, this application is not limited to this. In other embodiments, the control pump 203 may also be disposed on the second pipe 2022, in which case there are two control pumps 203, respectively disposed at both ends of the second pipe 2022.

[0070] Please see Figure 1 In some embodiments, a third control valve 2023 is provided on the first pipeline 202. The third control valve 2023 is located on the section of the first pipeline 2021 that connects the control pump 203 and the second pipeline 2022. In this way, when the third control valve 2023 is closed, liquid can be effectively prevented from flowing into the working area when replacing downstream components (e.g., replacing the gasket 50 to be tested), thereby facilitating the maintenance and replacement of downstream components.

[0071] In some embodiments, the plate 1012 is conductive. This allows the middle frame 101 of the electrolytic cell to be used as the middle frame 101 of the test system 100, thereby reducing the manufacturing cost of the test system 100. Of course, this application is not limited to this. In other embodiments, the plate 1012 may also be non-conductive.

[0072] Please see Figure 1 In some embodiments, the liquid supply device 20 includes a heater 205 for heating the liquid in the liquid container 201. This allows the heater 205 to heat the liquid in the liquid container 201, simulating the high-temperature environment of the actual electrolytic cell operation, making the performance test of the sealing gasket closer to actual working conditions, thereby improving the reliability of the test results.

[0073] For example, the heater 205 can be, but is not limited to, an electric heating device, a gas heating device, or a solar heating device, and its maximum heating temperature is generally <95°C. The number of heaters 205 can be one or more. When there are multiple heaters 205, the multiple heaters 205 are arranged at intervals within the liquid container 201.

[0074] In some embodiments, the liquid supply device 20 may further include a cooling device for cooling the liquid in the liquid container 201. This can improve the cooling efficiency of the liquid supply device 20.

[0075] Please see Figure 1 In some embodiments, the liquid container 201 has a liquid inlet 2012, and a second control valve 2012a is provided at the liquid inlet 2012. This facilitates the injection and discharge of liquid into the liquid container 201.

[0076] Please see Figure 1 In some embodiments, a first pressure detection device 206 is provided inside the liquid container 201; the test system 100 also includes a control module 60, which, for example, can be, but is not limited to, a PLC control box or a sensor switch.

[0077] The control module 60 is electrically connected to the first pressure detection device 206, the first control valve 40, and the second control valve 2012a. The control module 60 is configured to control the first control valve 40 to open and / or control the second control valve 2012a to open when the pressure detected by the first pressure detection device 206 is greater than or equal to a first preset pressure. It is understood that when a fourth control valve 2041 is installed on the second pipeline 204, in addition to controlling the first control valve 40 to open when the pressure detected by the first pressure detection device 206 is greater than or equal to the first preset pressure, the fourth control valve 2041 also needs to be controlled to open.

[0078] In this way, the pressure inside the liquid container 201 can be monitored in real time through the cooperation of the first pressure detection device 206 and the control module 60. When the pressure inside the liquid container 201 is higher than the first preset pressure, the gas supply pipeline 30 or the liquid injection port 2012 will be automatically triggered to actively release the gas or liquid, thereby effectively releasing the overpressure state and preventing leakage or structural damage to the sealing test system 100 due to pressure accumulation, thereby improving the safety of the test system 100.

[0079] Please see Figure 1 In some embodiments, a first pressure detection device 206 is provided inside the liquid container 201; the test system 100 also includes a control module 60, which is electrically connected to the first pressure detection device 206, the control pump 203 and the heater 205; the control module 60 is configured to turn off the power supply to the control pump 203 and the heater 205 when the pressure inside the liquid container 201 is less than or equal to a second preset pressure.

[0080] When the pressure inside the liquid container 201 is less than or equal to the second preset pressure, it means that there is a leak in the test system 100 (for example, there may be a leak in the liquid container 201 or a leak in the first pipeline 202).

[0081] With this setup, the pressure inside the liquid container 201 can be monitored in real time through the cooperation of the pressure detection device and the control module 60. When the pressure inside the liquid container 201 is lower than the second preset pressure, the power supply to the control pump 203 and the heater 205 will be automatically turned off, preventing the heater 205 from burning dry in the absence of liquid due to leakage and the control pump 203 from running dry. This can improve the safety and stability of the test system 100.

[0082] Please see Figure 1 In some embodiments, the test system 100 also includes an alarm device 70; The control module 60 is electrically connected to the alarm device 70. The control module 60 is configured to control the alarm device 70 to sound an alarm when the pressure detected by the first pressure detection device 206 is greater than or equal to the first preset pressure, or less than or equal to the second preset pressure. The first preset pressure is greater than the second preset pressure. This allows for real-time monitoring of the pressure within the liquid container 201 through the cooperation of the pressure detection device and the control module 60. Automatic alarms are triggered when pressure is abnormal, facilitating the identification of any abnormalities in the operating status of the testing system 100 by relevant personnel, thus enabling timely intervention.

[0083] Please see Figure 1 In some embodiments, a first temperature detection device 207 is provided inside the liquid container 201; The testing system 100 also includes a control module 60. The control module 60 is electrically connected to the first temperature detection device 207 and the heater 205. The control module 60 is configured to stop the heater 205 from operating when the liquid temperature detected by the first temperature detection device 207 is greater than or equal to a first preset temperature, and to restart the heater 205 when the liquid temperature detected by the first temperature detection device 207 is less than or equal to a second preset temperature. For example, the heating temperature of the heater 205 can be adjusted by regulating the power of the heater 205 through the control module 60.

[0084] In this way, the liquid temperature can be monitored in real time through the cooperation of the first temperature detection device 207 and the control module 60. The heater 205 is controlled to stop when the liquid temperature is greater than or equal to the first preset temperature and to start when the liquid temperature is less than or equal to the second preset temperature. In this way, the liquid temperature can be stabilized within the preset temperature range, providing a constant and reliable temperature environment for the testing of the sealing gasket, thereby improving the reliability of the test results.

[0085] Please see Figure 1In some embodiments, a second temperature detection device 208 and a second pressure detection device 209 are provided on the first pipeline 202, and the control module 60 is electrically connected to the second temperature detection device 208 and the second pressure detection device 209.

[0086] As the liquid flows from the container 201 through the first pipe 2021 to the second pipe 2022, its temperature and pressure decrease. The second temperature detection device 208 and the second pressure detection device 209 capture the degree of decrease in real time and provide this information to the control module 60. This allows the control module 60 to dynamically adjust the operating status of the heater 205 or the control pump 203 to compensate for heat loss or pressure drop during transport, ensuring stable test conditions when the liquid reaches the test device 10. This, in turn, improves the accuracy and reliability of the gasket test.

[0087] For example, in Figure 1 In the illustrated embodiment, the second temperature detection device 208 and the second pressure detection device 209 are disposed on the pipe section of the first pipe 2021 connecting the control pump 203 and the second pipe 2022. However, this application is not limited to this. In other embodiments, the second temperature detection device 208 and the second pressure detection device 209 may also be disposed on the pipe section of the first pipe 2021 connecting the liquid container 201 and the control pump 203, or on the second pipe 2022.

[0088] Please see Figure 2 In some embodiments, there are multiple middle frames 101, which are stacked in the thickness direction of the middle frames 101. For example, the number of middle frames 101 can be three or more. As an example, in... Figure 2 In the embodiment shown, there are two middle frames 101.

[0089] This allows for parallel testing of more samples under completely identical operating conditions. This improves both testing efficiency and the reliability of comparing sealing performance data between different samples.

[0090] Please see Figure 5 and combined Figure 6 ,in, Figure 5 for Figure 1 A schematic diagram of a portion of the structure of the test system 100 shown; Figure 6 for Figure 2The diagram shows an enlarged view of the portion framed at point B. In some embodiments, the test system 100 further includes a compression device 80, which includes a first end plate 801, a second end plate 802, and a compression assembly 803. The first end plate 801 and the second end plate 802 are disposed opposite each other in the axial direction of the frame 1011. Each middle frame 101 is disposed between the first end plate 801 and the second end plate 802. The compression assembly 803 is used to push the first end plate 801 and / or the second end plate 802 toward each other to compress the middle frame 101 and compress the gasket 50 to be tested to achieve a seal.

[0091] In this way, by pushing the first end plate 801 and / or the second end plate 802 to move relative to each other along the axial direction of the middle frame 101 and applying controllable mechanical pressure, the gasket 50 to be tested, which is arranged between the diaphragm 102 and the frame 1011, can produce controllable compression deformation, thereby effectively simulating the mechanical behavior of the gasket under the pressure and sealing state of a real electrolytic cell and improving the reliability of the test results.

[0092] Please see Figure 5 and combined Figure 6 In some embodiments, a plurality of first through holes 8011 are provided on the first end plate 801, and the plurality of first through holes 8011 are arranged at intervals in the circumferential direction of the first end plate 801. The central axis of each first through hole 8011 is parallel to the axial direction of the second end plate 802, and a plurality of second through holes 8021 are provided on the second end plate 8021. The plurality of second through holes 8021 are provided in a one-to-one correspondence with the plurality of first through holes 8011. The extrusion assembly 803 includes multiple screws 8031 ​​and multiple nuts 8032. Each screw 8031 ​​corresponds to one of multiple second through holes 8021. Each screw 8031 ​​passes through its corresponding first through hole 8011 and second through hole 8021. Each screw 8031 ​​is equipped with two spaced-apart nuts 8032, and a first end plate 801 and a second end plate 802 are located between the two nuts 8032. Thus, the extrusion assembly 803 has a simple structure and is easy to manufacture. In use, by tightening the nuts 8032, the axial mechanical pressure generated by the threaded engagement between the nuts 8032 and the screws 8031 ​​pushes the first end plate 801 and the second end plate 802 toward each other, thereby achieving the extrusion and fixation of the multiple middle frames 101. Of course, this application is not limited to this. In other embodiments, the extrusion device 80 can also be an extruder.

[0093] Please see Figure 6Based on the above embodiments, the compression assembly 803 further includes multiple disc springs 8033. Each screw 8031 ​​is fitted with a disc spring 8033, which is located between two nuts 8032. A portion of the disc springs 8033 are located on the side of the first end plate 801 away from the second end plate 802, while the other portion are located on the side of the second end plate 802 away from the first end plate 801. In this way, the release of the elastic potential energy stored in the disc springs 8033 can compensate for the loss of preload during the test, thereby ensuring that the gasket 50 under test is always maintained in a stable and sufficient compression state, thus improving the reliability of the test results.

[0094] Please see Figure 7 , Figure 7 for Figure 2 The diagram shows an enlarged view of the portion circled at point C. In some embodiments, at least one of the first end plate 801 and the second end plate 802 is provided with a diaphragm 102 between itself and the frame 1011. Specifically, the diaphragm 102 may be provided only between the first end plate 801 and the frame 1011, only between the second end plate 802 and the frame 1011, or both the first end plate 801 and the second end plate 802 may be provided with diaphragms 102 between themselves and the frame 1011. This allows for an increase in the number of sealing gaskets that can be measured simultaneously without increasing the number of middle frames 101, thereby effectively improving testing efficiency.

[0095] Please return to the reference. Figure 4 and Figure 5 In some embodiments, a plurality of pin beams 804 are provided on the first end plate 801, each pin beam 804 extending along the axial direction of the first end plate 801. A plurality of hanging ears 1015 are provided on the middle frame 101; the plurality of hanging ears 1015 are provided one-to-one with the plurality of pin beams 804; the hanging ears 1015 of each middle frame 101 are suspended on the corresponding pin beam 804. In this way, the middle frame 101 can be suspended on its corresponding pin beam 804 through the hanging ears 1015, thereby achieving the initial position fixation of the middle frame 101, which facilitates the subsequent pressing and fixing of the plurality of middle frames 101 by the pressing assembly 803.

[0096] Furthermore, it is necessary to explain that the coordinated operation of the control module 60, the first pressure detection device 206, the first temperature detection device 207, and the alarm device 70, as described above, can automatically control the required testing environment, enabling long-term unattended operation. This effectively reduces the pressure of personnel rotation and avoids operational bottlenecks caused by insufficient staff.

[0097] In addition, the test system 100 mentioned above can also be used for extreme working condition testing (ultra-high temperature, ultra-high pressure) and fluctuation testing (temperature, pressure fluctuation).

[0098] Please see Figure 8 , Figure 8 This is a flowchart illustrating a method for testing a sealing gasket according to some embodiments of this application. Embodiments of this application also provide a method for testing a sealing gasket, which uses the aforementioned testing system 100 to perform a sealing performance test on the sealing gasket. The method for testing the sealing gasket includes the following steps: S01: Liquid is injected into the first cavity 103 through the first pipeline 202; S02: Open the first control valve 40 and inject gas into the first chamber 103.

[0099] Since the testing method for the sealing gasket provided in this application includes the testing system described in the above embodiments, both can solve the same technical problem and achieve the same technical effect. Further details will not be elaborated here.

[0100] Of course, this application is not limited to this. In other embodiments, the first control valve 40 may be opened first to inject gas into the first cavity 103; then liquid may be injected into the first cavity 103 through the first pipeline 202. In still other embodiments, the steps of opening the first control valve 40 to inject gas into the first cavity 103 and injecting liquid into the first cavity 103 through the first pipeline 202 may be performed simultaneously.

[0101] Please see Figure 8 In some embodiments, before the step of injecting liquid into the first cavity 103 through the first conduit 202, the testing method for the sealing gasket includes: S00: activating the heater 205 to heat the liquid in the liquid container 201. This preheating of the liquid in the liquid container 201 avoids the need for the testing system 100 to consume additional time and energy for heating after the injection of the low-temperature liquid, thereby shortening the preparation time of the entire testing cycle and improving testing efficiency.

[0102] It is necessary to explain that in the embodiment where the first control valve 40 is opened first to inject gas into the first cavity 103, and then liquid is injected into the first cavity 103 through the first pipeline 202, or in the embodiment where both are performed simultaneously, the step of activating the heater 205 to heat the liquid in the liquid container 201 can be performed before the step of opening the first control valve 40 to inject gas into the first cavity 103, or after the step of opening the first control valve 40 to inject gas into the first cavity 103, or simultaneously with the step of opening the first control valve 40 to inject gas into the first cavity 103.

[0103] In some embodiments, after the liquid temperature in the liquid container 201 is heated to a set temperature range (greater than or equal to a first preset temperature and less than or equal to a second preset temperature) by the heater 205, and the saturated vapor pressure and the thermal expansion of the medium volume stabilize, the first control valve 40 is opened to inject gas into the first chamber 103 until the test set value is reached. This allows the pressure in the first chamber 103 to reach and stabilize at the test set value more quickly, thereby improving test efficiency.

[0104] In some embodiments, the step of injecting liquid into the first cavity 103 through the first pipeline 202 includes: starting the control pump 203 to inject liquid into the first cavity 103 through the first pipeline 202. In this way, the flow rate and pressure of the liquid supplied from the liquid container 201 to the first cavity 103 can be precisely controlled by the control pump 203 to simulate the liquid conditions in actual operation of the electrolytic cell, thereby improving the accuracy and reliability of the gasket test.

[0105] In some embodiments, the testing method for the sealing gasket after the heater 205 is started includes: The pressure inside the liquid container 201 is detected. For example, in this embodiment, the step of detecting the pressure inside the liquid container 201 can be performed before step S02, after step S02, or simultaneously with step S02. This application does not impose any limitations here, as long as the step of detecting the pressure inside the liquid container 201 is performed after the heater 205 is started.

[0106] When the pressure inside the liquid container 201 is less than or equal to the second preset pressure, or when the pressure inside the liquid container 201 is greater than or equal to the first preset pressure, the test system 100 is triggered to sound an alarm; wherein the first preset pressure is greater than the second preset pressure. This facilitates the identification of abnormalities in the operating status of the test system 100 by relevant personnel, thereby enabling them to take timely intervention measures.

[0107] In some embodiments, the testing method for the sealing gasket further includes: Detect the pressure inside the liquid container 201.

[0108] When the pressure inside the liquid container 201 is greater than or equal to the first preset pressure, the first control valve 40 is opened, and / or the second control valve 2012a is opened. Thus, when the pressure inside the liquid container 201 is higher than the first preset pressure, the gas supply line 30 or the injection port 2012 can be automatically triggered to actively release gas or liquid, thereby effectively releasing overpressure and preventing leakage or structural damage to the sealing test system 100 due to pressure accumulation, thereby improving the safety of the test system 100.

[0109] In some embodiments, after the control pump 203 and heater 205 are started, the method for testing the sealing gasket includes: Detect the pressure inside the liquid container 201; When the pressure inside the liquid container 201 is less than or equal to the second preset pressure, the power supply to the control pump 203 and the heater 205 is turned off. This effectively prevents the heater 205 from burning dry in a liquid-free state due to leakage and the control pump 203 from running dry, thereby improving the safety and stability of the test system 100.

[0110] For example, the control pump 203 and the heater 205 can be started simultaneously, or the control pump 203 can be started first and then the heater 205 can be started, or the heater 205 can be started first and then the control pump 203 can be started.

[0111] In some embodiments, after the step of activating the heater 205 to heat the liquid in the liquid container 201, the method for testing the sealing gasket includes: The temperature of the liquid in the liquid container 201 is detected. When the temperature of the liquid in the liquid container 201 is greater than or equal to the first preset temperature, the heater 205 is controlled to stop working. The temperature of the liquid in the liquid container 201 is detected. When the temperature of the liquid in the liquid container 201 is less than or equal to the second preset temperature, the heater 205 is restarted.

[0112] This allows the liquid temperature to be stabilized within the preset temperature range, providing a constant and reliable temperature environment for the testing of the sealing gasket, which in turn helps to improve the reliability of the test results.

[0113] For example, the liquid temperature in the liquid container 201 can be detected after step S01 and before step S02, or it can be detected after step S02. This application does not impose any limitations here, as long as it is performed after step S00.

[0114] For example, please refer to Figure 9 , Figure 9 This is a flowchart illustrating a testing method for a sealing gasket, provided for some embodiments of this application. The complete processing steps of the sealing gasket testing method are as follows: S1. Inject liquid into liquid container 201; S2. Set the first preset temperature and the second preset temperature; S3, Start control pump 203; S4. Start heater 205; S5. Determine whether the temperature of the liquid in the liquid container 201 is greater than or equal to the first preset temperature. If yes, proceed to step S6; otherwise, proceed to step S7. S6. Turn off heater 205; S7. Determine whether the temperature of the liquid in the liquid container 201 is less than or equal to the second preset temperature. If yes, return to step S4; otherwise, proceed to step S8 below. S8. Open the first control valve 40 and inject gas into the first chamber 103 to bring the pressure to the predetermined value. S9. Set the first preset pressure and the second preset pressure; S10. Determine whether the pressure inside the liquid container 201 is greater than or equal to the first preset pressure. If yes, proceed to step S11; otherwise, proceed to step S12.

[0115] S11, control the first control valve 40 to open, and / or control the second control valve 2012a to open for pressure relief, and control the test system 100 to alarm; S12. Determine whether the pressure inside the liquid container 201 is less than or equal to the second preset pressure. If yes, proceed to step S13; otherwise, return to step S5. S13, shut off the power supply to control pump 203 and heater 205 and trigger an alarm in control test system 100; S14. Check if there is a liquid leak in the test system 100. If yes, proceed to step S15; otherwise, proceed to step S16. S15. Add liquid to the liquid container 201; S16. Clear the alarm and return to step S3.

[0116] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications or equivalent substitutions made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A testing system, characterized in that, include: A testing device includes a middle frame and a diaphragm. The middle frame includes an annular frame body and a plate body. The plate body is fixed around the inner surface of the frame body. The diaphragm is disposed at at least one axial end of the frame body. The diaphragm, the frame body, and the plate body form a first cavity. A sealing gasket to be tested is arranged between the diaphragm and the frame body. The middle frame has an inlet communicating with the first cavity. A liquid supply device, the liquid supply device comprising a liquid container having an outlet connected to the inlet via a first pipeline; A gas supply pipeline and a first control valve, wherein the gas supply pipeline is used to supply gas to the first cavity, and the first control valve is located on the gas supply pipeline.

2. The testing system according to claim 1, characterized in that, The liquid supply device includes a heater for heating the liquid in the liquid container.

3. The testing system according to claim 1, characterized in that, The middle frame has a discharge port communicating with the first cavity; the liquid container has an inlet, which is connected to the discharge port via a second pipeline.

4. The testing system according to claim 3, characterized in that, The gas supply pipeline is connected to the second pipeline.

5. The testing system according to claim 4, characterized in that, The liquid container has a liquid inlet, and a second control valve is provided at the liquid inlet.

6. The testing system according to claim 5, characterized in that, The liquid supply device includes a heater for heating the liquid in the liquid container; The liquid container is equipped with a first pressure detection device. The testing system further includes a control module, which is electrically connected to the first pressure detection device, the first control valve, and the second control valve. The control module is configured to control the first control valve to open and / or control the second control valve to open when the pressure detected by the first pressure detection device is greater than or equal to a first preset pressure.

7. The testing system according to claim 1, characterized in that, The liquid supply device includes a control pump, which is installed on the first pipeline.

8. The testing system according to claim 7, characterized in that, The liquid supply device includes a heater for heating the liquid in the liquid container; The liquid container is equipped with a first pressure detection device. The testing system also includes a control module, which is electrically connected to the first pressure detection device, the control pump, and the heater; the control module is configured to shut off the power to the control pump and the heater when the pressure in the liquid container is less than or equal to a second preset pressure.

9. The testing system according to claim 6, characterized in that, It also includes alarm devices; The control module is electrically connected to the alarm device, and the control module is configured to control the alarm device to sound an alarm when the pressure detected by the first pressure detection device is greater than or equal to a first preset pressure, or less than or equal to a second preset pressure. Wherein, the first preset pressure is greater than the second preset pressure.

10. The testing system according to claim 1, characterized in that, The liquid supply device includes a heater for heating the liquid in the liquid container; the liquid container is equipped with a first temperature detection device. The testing system also includes a control module, which is electrically connected to the first temperature detection device and the heater. The control module is configured to control the heater to stop working when the liquid temperature detected by the first temperature detection device is greater than or equal to a first preset temperature, and to control the heater to restart when the liquid temperature detected by the first temperature detection device is less than or equal to a second preset temperature.

11. The testing system according to claim 1, characterized in that, The plate is conductive.

12. A test method for a sealing gasket, characterized in that, The sealing gasket is tested for sealing performance using the test system according to any one of claims 1-11, the method comprising the following steps: Open the first control valve to inject gas into the first cavity; inject liquid into the first cavity through the first pipeline.

13. The testing system is the testing method for the sealing gasket as described in claim 12, characterized in that, The liquid supply device includes a heater for heating the liquid in the liquid container; Prior to the step of injecting liquid into the first cavity through the first conduit, the method includes: The heater is activated to heat the liquid in the container.

14. The test method for the sealing gasket according to claim 12, characterized in that, The liquid supply device includes a control pump, which is installed on the first pipeline; The step of injecting liquid into the first cavity through the first pipeline includes: The control pump is started to inject liquid into the first cavity through the first pipeline.

15. The test method for the sealing gasket according to claim 14, characterized in that, The liquid supply device includes a heater for heating the liquid in the liquid container; After the control pump and the heater are started, the method includes: Detect the pressure inside the liquid container; When the pressure inside the liquid container is less than or equal to the second preset pressure, the power supply to the control pump and the heater is turned off.

16. The test method for the sealing gasket according to claim 13, characterized in that, After the heater is started, the method includes: Detect the pressure inside the liquid container; When the pressure inside the liquid container is less than or equal to a second preset pressure, or when the pressure inside the liquid container is greater than or equal to a first preset pressure, the test system is controlled to alarm; wherein, the first preset pressure is greater than the second preset pressure.

17. The test method for the sealing gasket according to claim 12, characterized in that, The liquid container has a liquid injection port, and a second control valve is provided at the liquid injection port; the method includes: Detect the pressure inside the liquid container; When the pressure inside the liquid container is greater than or equal to a first preset pressure, the first control valve is controlled to open, and / or the second control valve is controlled to open.

18. The test method for the sealing gasket according to claim 13, characterized in that, After the step of activating the heater to heat the liquid in the container, the method includes: The temperature of the liquid in the container is detected, and when the temperature of the liquid in the container is greater than or equal to a first preset temperature, the heater is controlled to stop working. The temperature of the liquid in the container is detected, and when the temperature of the liquid in the container is less than or equal to a second preset temperature, the heater is restarted.

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