A perfluorinated proton exchange membrane durability test apparatus

Abstract

This application relates to the field of proton exchange membrane durability testing and discloses a perfluorinated proton exchange membrane durability testing device, including a base frame. A control motor is fixedly installed at one end of the base frame, and a rotating frame is fixedly connected to the output end of the control motor. The center of the rotating frame and the center of the control motor are on the same straight line. Several mounting cylinders are fixedly connected to one end of the rotating frame. One end of each mounting cylinder is connected to a connecting pipe, and a fixed frame is slidably connected to the inner wall of the mounting cylinder. This application achieves this by stabilizing the base frame, connecting one end of the base frame to the control motor, and connecting the output end of the control motor to several mounting cylinders via the rotating frame. One end of each mounting cylinder is connected to a connecting pipe, and a fixed frame is installed on the inner wall of the mounting cylinder. This allows the rotating frame to rotate within the base frame after the control motor is started, enabling the test material in the mounting cylinder to undergo durability tests for different durations, conforming to normal usage conditions.

Description

Technical Field

[0001] This application relates to the field of proton exchange membrane durability testing, and in particular to a perfluorinated proton exchange membrane durability testing device. Background Technology

[0002] Perfluorinated proton exchange membranes (also known as perfluorosulfonic acid ion exchange membranes) are polymeric materials copolymerized from PSVE (perfluorosulfonyl vinyl ether) monomers and tetrafluoroethylene. They possess high proton conductivity, chemical stability, and mechanical strength, making them key materials in the chlor-alkali industry, fuel cell vehicles, and PEM (perfluoromolecular electrolysis) for hydrogen production. Proton exchange membrane durability testing assesses its performance stability under long-term use or extreme conditions. This mainly includes cycle life testing and accelerated aging experiments. By simulating real-world usage scenarios (such as repeated charge-discharge cycles and temperature changes), the long-term stability of the membrane is evaluated. Under accelerated conditions (such as high temperature, high humidity, or chemically corrosive environments), the durability of the membrane is tested to predict its service life. It is primarily used in the fuel cell field to ensure that the membrane electrode assembly can withstand tens of thousands of charge-discharge cycles during vehicle operation and adapt to harsh conditions such as temperature fluctuations and oxidant corrosion.

[0003] Regarding the aforementioned technologies, the inventors believe that conventional proton exchange membrane durability testing often involves simultaneous simulation testing of several materials, resulting in identical test results. However, in actual use environments, the testing times experienced by the materials vary, and conventional testing methods cannot accurately reflect the real-world usage environment, thus leading to poor performance in conventional proton exchange membrane durability testing.

[0004] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Utility Model Content

[0005] To address the challenge of achieving different testing times during proton exchange membrane durability testing, this application provides a perfluorinated proton exchange membrane durability testing device.

[0006] The perfluorinated proton exchange membrane durability testing device provided in this application adopts the following technical solution: A durability testing device for perfluorinated proton exchange membranes includes a base frame. A control motor is fixedly mounted at one end of the base frame. A rotating frame is fixedly connected to the output end of the control motor. The center of the rotating frame is collinear with the center of the control motor. A plurality of mounting cylinders are fixedly connected to one end of the rotating frame. A connecting pipe is connected to one end of each mounting cylinder. A fixed frame is slidably connected to the inner wall of each mounting cylinder. A test material is fixedly connected to the inner wall of the fixed frame. The base frame has an "L"-shaped cross-section. The plurality of mounting cylinders are arranged in a circular array around the center of the rotating frame. The center of each mounting cylinder is collinear with the center of the connecting pipe. The dimensions of the test material surface are compatible with the dimensions of the inner wall of the fixed frame.

[0007] Preferably, a connecting ring is snapped into the inner wall of the mounting cylinder, and an adjusting tube is fixedly connected to one end of the connecting ring. One end of the adjusting tube is connected to one end of the connecting tube, and the center of the adjusting tube and the center of the connecting tube are on the same straight line. The adjusting tube is an aluminum foil telescopic tube.

[0008] Preferably, a control frame is fixedly mounted on the surface of the regulating tube, an electric push rod is fixedly connected to one end of the control frame, an installation plate is fixedly mounted to one end of the electric push rod, and one end of the installation plate is fixedly connected to one end of the regulating tube.

[0009] Preferably, a slider is fixedly connected to the bottom end of the control frame, a sliding frame is slidably mounted on the surface of the slider, one end of the sliding frame is fixedly connected to one end of the mounting plate, and the dimensions of the inner wall of the sliding frame are compatible with the dimensions of the slider surface.

[0010] Preferably, a shielding ring is fixedly installed on the surface of the connecting ring. The shielding ring is a rubber ring, and the surface of the shielding ring is movably connected to the inner wall of the mounting cylinder. The dimensions of the shielding ring surface are interference-fitted with the dimensions of the inner wall of the mounting cylinder.

[0011] Preferably, one end of the connecting pipe is fixedly connected to a threaded ring, the center of the threaded ring is on the same straight line as the center of the connecting pipe, and the surface of the threaded ring is threaded onto the inner wall of the mounting plate.

[0012] Preferably, one end of the control motor is connected to a power source, one end of the connecting pipe is connected to an electric control valve, one end of the electric control valve is connected to a water source, a humidifier, a heater, an oxidation device, and an automatic acid / alkali adding device, one end of the humidifier is connected to a humidity sensor, one end of the heater is connected to a temperature sensor, and one end of the humidifier and the heater are connected to a humidity sensor and a temperature sensor, respectively.

[0013] In summary, this application includes the following beneficial technical effects: 1. After the base frame is installed stably, a control motor is connected to one end of the base frame. The output end of the control motor is connected to several mounting cylinders via a rotating frame. One end of each mounting cylinder is connected to a connecting pipe. A fixing frame is installed on the inner wall of the mounting cylinder to control the rotating frame to rotate within the base frame after the control motor is started. This allows the test material inside the mounting cylinder to undergo durability tests for different durations, conforming to normal usage conditions. A connecting ring is snapped into the inner wall of the mounting cylinder. One end of the connecting ring is connected to an adjusting pipe made of aluminum foil telescopic tubing, allowing for easy installation and separation of the connecting ring from the mounting cylinder. A control frame is mounted on the surface of the adjusting pipe, and an electric push rod is fixedly connected to the surface of the control frame. One end of the electric push rod is connected to a mounting plate, allowing the control frame to move by adjusting its own length, thereby adjusting the length of several adjusting pipes. A slider is mounted at the bottom of the control frame, and a sliding mechanism is slidably connected to the surface of the slider to ensure the stability of the control frame's movement. Compared to existing technologies, this method effectively improves the testing effect on the test material. A rubber shielding ring can also be installed on the surface of the connecting ring to improve the sealing between the connecting ring and the mounting cylinder. A threaded ring is installed at one end of the connecting pipe to facilitate disassembly of the connecting pipe after separating the threaded ring from the mounting plate, making it convenient for later cleaning and replacement. One end of the control motor is connected to a power source, and one end of the connecting pipe is connected to an electric control valve. One end of the electric control valve is connected to a water source, humidifier, heater, oxidation equipment, and automatic acid and alkali addition equipment. One end of the humidifier and heater is connected to a humidity sensor and a temperature sensor, respectively, so that the device can be connected to different detection equipment through the connecting pipe to complete the detection effect of the proton exchange membrane, thereby closely matching the actual simulated environment and effectively improving the use effect of the device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a perfluorinated proton exchange membrane durability testing device according to an embodiment of the application. Figure 2 This is a schematic diagram of the base frame structure of the application embodiment; Figure 3 This is a side view of the embodiment of the application. Figure 4 This is a schematic diagram of the structure at point A in the embodiment of the application; Figure 5 This is a schematic diagram of device connection in an embodiment of the application.

[0015] Explanation of reference numerals in the attached drawings: 1. Base frame; 2. Control motor; 3. Rotating frame; 4. Mounting cylinder; 5. Fixing frame; 6. Detection material; 7. Connecting ring; 8. Adjusting pipe; 9. Mounting plate; 10. Connecting pipe; 11. Threaded ring; 12. Control frame; 13. Electric push rod; 14. Slider; 15. Sliding frame; 16. Shielding ring. Detailed Implementation

[0016] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0017] This application discloses a durability testing device for perfluorinated proton exchange membranes, referring to... Figure 1 - Figure 2 The system includes a base frame 1. After the base frame 1 is installed and stabilized, a control motor 2 is connected to one end of the base frame 1. A rotating frame 3 is installed at the output end of the control motor 2. Several mounting cylinders 4 are connected to one end of the rotating frame 3. A connecting pipe 10 is connected to one end of the mounting cylinder 4. One end of the connecting pipe 10 is connected to different testing equipment. A fixing frame 5 is installed on the inner wall of the mounting cylinder 4. The inner wall of the fixing frame 5 is connected to the surface of the test material 6. After the control motor 2 is started, the rotating frame 3 is controlled to rotate on the inner wall of the base frame 1, thereby connecting one end of the mounting cylinder 4 to different connecting pipes 10, so that the test material 6 in the mounting cylinder 4 can undergo durability tests for different durations, which conforms to the usage in a normal environment and effectively improves the testing effect of the test material 6.

[0018] Reference Figure 2 A connecting ring 7 is snapped into the inner wall of the mounting cylinder 4. One end of the connecting ring 7 is connected to an adjusting tube 8 made of aluminum foil telescopic tubing. One end of the adjusting tube 8 is connected to one end of the connecting tube 10. The telescopic nature of the aluminum foil material facilitates the installation and separation of the connecting ring 7 and the mounting cylinder 4, allowing the mounting cylinder 4 to rotate to different angles. A control frame 12 is mounted on the surface of the adjusting tube 8, and an electric push rod 13 is fixedly connected to the surface of the control frame 12. One end of the electric push rod 13 is connected to a mounting plate 9, allowing the electric push rod 13 to adjust its length. After the control frame 12 moves, the length of several adjusting tubes 8 can be adjusted, reducing the amount of manual operation. It can also control several adjusting tubes 8 simultaneously, making it more convenient to use. A slider 14 is installed at the bottom of the control frame 12, and a sliding frame 15 is slidably connected to the surface of the slider 14. One end of the sliding frame 15 is connected to one end of the mounting plate 9. The slider 14 and the sliding frame 15 restrict the movement of the control frame 12, thereby ensuring the stability of the movement of the control frame 12 and preventing the adjusting tubes 8 from bending due to the offset of the control frame 12.

[0019] Reference Figure 3 - Figure 5A rubber shielding ring 16 is installed on the surface of the connecting ring 7. The surface of the shielding ring 16 is connected to the inner wall of the mounting cylinder 4. The shielding ring 16 improves the sealing between the connecting ring 7 and the mounting cylinder 4, preventing leakage of air or water into the testing equipment. A threaded ring 11 is installed at one end of the connecting pipe 10. The surface of the threaded ring 11 is threaded to the inner wall of the mounting plate 9. The threaded ring 11 facilitates the installation of the connecting pipe 10 at one end of the mounting plate 9, and the connection pipe 10 can be easily disassembled after the threaded ring 11 is separated from the mounting plate 9, facilitating the cleaning and replacement of the connecting pipe 10 later. One end of the control motor 2 is connected to a power source, and one end of the connecting pipe 10 is connected to an electric control valve. One end of the electric control valve is connected to a water source and a fuel supply. The device includes a humidifier, heater, oxidation equipment, and automatic acid / alkali addition equipment. The water source simulates the state of material 6 when soaked in water; the humidifier simulates the state of material 6 when the humidity is high; the heater simulates the state of material 6 when the temperature is high; the oxidation equipment simulates the degradation state of material 6 under oxidant permeation; and the automatic acid / alkali addition equipment simulates the state of material 6 at different acid and alkali levels. A humidity sensor and a temperature sensor are connected to one end of the humidifier and heater. The humidity sensor and temperature sensor monitor the temperature of the airflow entering the connecting pipe 10 and control the temperature of the humidifier and heater within a suitable range. The device is connected to different detection equipment via the connecting pipe 10 to complete the detection effect of the proton exchange membrane, thus closely matching the actual simulated environment.

[0020] The implementation principle of the perfluorinated proton exchange membrane durability testing device in this application embodiment is as follows: After the base frame 1 is installed stably, a control motor 2 is connected to one end of the base frame 1. A rotating frame 3 is installed at the output end of the control motor 2. Several mounting cylinders 4 are connected to one end of the rotating frame 3. A connecting pipe 10 is connected to one end of the mounting cylinder 4. One end of the connecting pipe 10 is connected to different testing equipment. A fixing frame 5 is installed on the inner wall of the mounting cylinder 4. The inner wall of the fixing frame 5 is connected to the surface of the test material 6, so that the rotating frame 3 can be controlled to rotate on the inner wall of the base frame 1 after the control motor 2 is started. This connects one end of the mounting cylinder 4 to different connecting pipes 10, allowing the test material 6 in the mounting cylinder 4 to undergo durability tests for different durations. This conforms to the usage method in a normal environment and effectively improves the testing effect on the test material 6. A connecting ring 7 is snapped into the inner wall of the mounting cylinder 4. One end of the connecting ring 7 is connected to an adjusting pipe 8 made of aluminum foil telescopic tube material. One end of the adjusting pipe 8 is connected to one end of the connecting pipe 10. The connection is made so that the aluminum foil telescopic tube material has a telescopic property, which makes it easy to install and separate the connecting ring 7 and the mounting cylinder 4, and to rotate the mounting cylinder 4 to different angles. The surface of the adjusting tube 8 is equipped with a control frame 12, and the surface of the control frame 12 is fixedly connected with an electric push rod 13. One end of the electric push rod 13 is connected to the mounting plate 9, so that the control frame 12 can be moved after the electric push rod 13 adjusts its own length, thereby adjusting the length of several adjusting tubes 8, reducing the amount of manual operation, and controlling several adjusting tubes 8 simultaneously, which is more convenient to use. The bottom end of the control frame 12 is equipped with a slider 14, and the surface of the slider 14 is slidably connected with a sliding frame 15. One end of the sliding frame 15 is connected to one end of the mounting plate 9, so that the slider 14 and the sliding frame 15 can limit the movement position of the control frame 12, thereby ensuring the stability of the movement of the control frame 12 and preventing the adjustment tube 8 from bending due to the deviation of the control frame 12.

[0021] A rubber shielding ring 16 can also be installed on the surface of the connecting ring 7. The surface of the shielding ring 16 is connected to the inner wall of the mounting cylinder 4 to improve the sealing between the connecting ring 7 and the mounting cylinder 4, preventing leakage of air or water into the testing equipment. A threaded ring 11 is installed at one end of the connecting pipe 10. The surface of the threaded ring 11 is threaded to the inner wall of the mounting plate 9, so that the connecting pipe 10 can be easily installed at one end of the mounting plate 9. After the threaded ring 11 is separated from the mounting plate 9, the connecting pipe 10 can be easily disassembled, facilitating cleaning and replacement of the connecting pipe 10 later. One end of the control motor 2 is connected to a power source, and one end of the connecting pipe 10 is connected to an electric control valve. The end of the electric control valve is connected to a water source. The device includes a humidifier, a heater, an oxidation device, and an automatic acid / alkali addition device. The water source simulates the state of material 6 when soaked in water; the humidifier simulates the state of material 6 when the humidity is high; the heater simulates the state of material 6 when the temperature is high; the oxidation device simulates the degradation state of material 6 under oxidant penetration; and the automatic acid / alkali addition device simulates the state of material 6 at different acid and alkali levels. One end of the humidifier and heater is connected to a humidity sensor and a temperature sensor, respectively. These sensors monitor the temperature of the airflow entering the connecting pipe 10 and control the temperature of the humidifier and heater within a suitable range. This allows the device to be connected to different detection devices via the connecting pipe 10, enabling the detection of proton exchange membrane performance and thus closely mimicking the actual simulated environment.

[0022] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A durability testing device for perfluorinated proton exchange membranes, comprising a base frame (1), characterized in that: A control motor (2) is fixedly installed at one end of the base frame (1). A rotating frame (3) is fixedly connected to the output end of the control motor (2). The center of the rotating frame (3) and the center of the control motor (2) are on the same straight line. A number of mounting cylinders (4) are fixedly connected to one end of the rotating frame (3). A connecting pipe (10) is connected to one end of the mounting cylinder (4). A fixed frame (5) is slidably connected to the inner wall of the mounting cylinder (4). A detection material (6) is fixedly connected to the inner wall of the fixed frame (5).

2. The perfluorinated proton exchange membrane durability testing device according to claim 1, characterized in that: The cross-section of the base frame (1) is "L" shaped. Several mounting cylinders (4) are arranged in a circular array with the center of the rotating frame (3) as the axis. The center of the mounting cylinder (4) and the center of the connecting pipe (10) are on the same straight line. The size of the surface of the test material (6) is compatible with the size of the inner wall of the fixed frame (5).

3. The perfluorinated proton exchange membrane durability testing device according to claim 1, characterized in that: The inner wall of the mounting cylinder (4) is fitted with a connecting ring (7), and one end of the connecting ring (7) is fixedly connected to an adjusting tube (8). One end of the adjusting tube (8) is connected to one end of the connecting tube (10), and the center of the adjusting tube (8) and the center of the connecting tube (10) are on the same straight line. The adjusting tube (8) is an aluminum foil telescopic tube.

4. The perfluorinated proton exchange membrane durability testing device according to claim 3, characterized in that: A control frame (12) is fixedly installed on the surface of the regulating tube (8). An electric push rod (13) is fixedly connected to one end of the control frame (12). An installation plate (9) is fixedly installed on one end of the electric push rod (13). One end of the installation plate (9) is fixedly connected to one end of the regulating tube (8).

5. The perfluorinated proton exchange membrane durability testing device according to claim 4, characterized in that: The bottom end of the control frame (12) is fixedly connected to a slider (14), and a sliding frame (15) is slidably installed on the surface of the slider (14). One end of the sliding frame (15) is fixedly connected to one end of the mounting plate (9), and the dimensions of the inner wall of the sliding frame (15) are compatible with the dimensions of the surface of the slider (14).

6. The perfluorinated proton exchange membrane durability testing device according to claim 3, characterized in that: A shielding ring (16) is fixedly installed on the surface of the connecting ring (7). The shielding ring (16) is a rubber ring, and the surface of the shielding ring (16) is movably connected to the inner wall of the mounting cylinder (4). The size of the surface of the shielding ring (16) is interference-fitted with the size of the inner wall of the mounting cylinder (4).

7. The perfluorinated proton exchange membrane durability testing device according to claim 1, characterized in that: One end of the connecting pipe (10) is fixedly connected to a threaded ring (11). The center of the threaded ring (11) is on the same straight line as the center of the connecting pipe (10), and the surface of the threaded ring (11) is threaded onto the inner wall of the mounting plate (9).

8. The durability testing device for a perfluorinated proton exchange membrane according to claim 1, characterized in that: One end of the control motor (2) is connected to a power source, one end of the connecting pipe (10) is connected to an electric control valve, one end of the electric control valve is connected to a water source, a humidifier, a heater, an oxidation device and an automatic acid and alkali adding device, one end of the humidifier is connected to a humidity sensor, one end of the heater is connected to a temperature sensor, and one end of the humidifier and the heater are connected to a humidity sensor and a temperature sensor.

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