A surface adhesion peel strength testing device for hydrogen-producing electrolysis seals

Abstract

The utility model relates to a kind of surface adhesive peel strength testing device of hydrogen production electrolytic seal, including cabinet;Test bench is installed on cabinet;Further include fixed platform;Moving platform;Fixed part, including upper clamping plate, upper clamping plate can be close to fixed platform;Clamping part, including multiple groups of clamping plate;Further include test piece, including with the second threaded sleeve of test bench sliding fitting;During testing, extrusion force generated by the movement of second threaded sleeve will first act on first spring and second spring, and a buffer is provided for moving platform movement (seal stretch) by the deformation of first spring and second spring;Gradually, linearly accumulated power, can make moving platform smoothly overcome static friction, will not produce a jarring peak value, and can eliminate the inherent gap and rigid impact of traditional transmission, ensure the smooth application of force value, and the data measured can more reflect the real peel strength of seal, rather than impact peak value.

Description

Technical Field

[0001] This utility model relates to a peel strength testing device, specifically a surface adhesion peel strength testing device for hydrogen electrolysis sealing components. Background Technology

[0002] Peel strength is a key indicator for measuring the adhesion performance between the seal and the metal electrode / bipolar plate; seal failure can lead to hydrogen leakage, resulting in decreased efficiency, safety hazards, and even serious accidents. Common testing equipment includes universal testing machines.

[0003] A typical universal material testing machine includes a fixed stage, a moving stage, and a drive module. During testing, one end of the seal is fixed to the fixed stage to simulate the actual working conditions of the seal. Then, the other end of the seal is clamped and fixed to the moving stage. During testing, the drive module moves the moving stage, thereby increasing the force between the seal and the fixed stage. When the seal slides relative to the fixed stage, the value of the force applied to the seal is recorded, and the surface adhesion peel strength of the seal is calculated.

[0004] Traditional universal testing machines often use pneumatic or hydraulic direct drive to move the stage. When tension is applied, this can easily lead to impact peaks or sudden force changes because pneumatic and hydraulic systems are inherently very "rigid" power transmission systems. Once the control valve opens, high-pressure fluid (air or hydraulic oil) rushes into the cylinder chamber, pushing the piston to generate a huge initial force. This instantaneous force is far higher than the steady-state force required for the test, forming a very high impact peak. This peak force is recorded in the data, but it is not the steady-state force required for seal peeling; rather, it is a false, destructive impact value. Utility Model Content

[0005] The purpose of this invention is to provide a device for testing the surface adhesion peel strength of hydrogen electrolysis sealing components, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A device for testing the surface adhesion peel strength of a hydrogen electrolysis sealing component includes a chassis; a test platform is mounted on the chassis.

[0008] It also includes a fixed platform; the fixed platform is fixedly connected to the test platform;

[0009] A mobile stage; a slider is mounted on the mobile stage; a guide rail is mounted on the test stage to slide and engage with the slider;

[0010] The fastener includes an upper clamping plate that is close to the fixing platform to secure one end of the sealing element;

[0011] The clamping component includes multiple sets of clamping plates symmetrically arranged on the moving platform, the clamping plates being used to clamp the free end of the seal;

[0012] It also includes a test piece, comprising a second threaded sleeve that slidably engages with the test stage; the second threaded sleeve is capable of providing the movable stage with a compressive force along the length of the test stage away from the fixed stage.

[0013] The surface adhesion peel strength testing device for hydrogen electrolysis sealing components as described above: the fixing component further includes a column and a fixing screw column installed on the fixing platform; the column is slidably fitted with the upper clamping plate; a first threaded sleeve that is threadedly connected to the fixing screw column is rotatably installed on the upper clamping plate.

[0014] The surface adhesion peel strength testing device for hydrogen electrolysis sealing components as described above includes: the clamping component further includes a guide rod mounted on the clamping plate; a compression plate is slidably mounted on the guide rod, and a clamping spring is wrapped around the guide rod, with both ends of the clamping spring abutting against the clamping plate and the compression plate respectively; a longitudinal groove is provided on the moving platform, and a sliding column that slidably engages with the longitudinal groove is mounted on the compression plate.

[0015] The surface adhesion peel strength testing device for hydrogen electrolysis sealing components as described above: the clamping member further includes an inclined groove and a transverse groove formed on the test platform and slidably engaged with the sliding column; wherein one end of the inclined groove is connected to one end of the transverse groove.

[0016] The surface adhesion peel strength testing device for hydrogen electrolysis sealing components as described above: the test piece further includes a drive module mounted on the test bench; a rotating lead screw is mounted on the output end of the drive module; the rotating lead screw is threadedly connected to the second threaded sleeve.

[0017] The surface adhesion peel strength testing device for hydrogen electrolysis sealing components as described above includes: the test piece further includes a fixed block mounted on the moving platform; a first spring and a second spring are wrapped around the rotating lead screw; and the first spring and the second spring are respectively disposed on both sides of the fixed block; wherein the two ends of the first spring abut against the second threaded sleeve and the fixed block respectively; and the two ends of the second spring abut against the fixed block and the test platform respectively.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] During the test, the compressive force generated by the movement of the second threaded sleeve will first act on the first and second springs. The deformation of the first and second springs provides a buffer for the movement of the moving platform (seal stretching). The force is gradually and linearly accumulated, which enables the moving platform to smoothly overcome static friction without producing an abrupt peak. It also eliminates the inherent gaps and rigid impacts of traditional transmissions, ensuring the smooth application of force. The measured data can better reflect the true peel strength of the seal, rather than the impact peak. Attached Figure Description

[0020] Figure 1 A schematic diagram of a device for testing the surface adhesion peel strength of hydrogen electrolysis sealing components.

[0021] Figure 2 A schematic diagram of the moving stage in the device for testing the surface adhesion peel strength of hydrogen electrolysis sealing components.

[0022] Figure 3 A schematic diagram of the test bench in a device for testing the surface adhesion peel strength of hydrogen electrolysis seals.

[0023] Figure 4 A schematic diagram of the sliding column in a device for testing the surface adhesion peel strength of hydrogen electrolysis sealing components.

[0024] Figure 5 A schematic diagram of the clamping plate in a device for testing the surface adhesion peel strength of hydrogen electrolysis sealing components.

[0025] Figure 6 A schematic diagram of the fixed stage in the device for testing the surface adhesion peel strength of hydrogen electrolysis sealing components.

[0026] In the diagram: 1. Chassis;

[0027] 2. Test bench; 201. Guide rail; 202. Inclined groove; 203. Horizontal groove;

[0028] 3. Driver module;

[0029] 4. Fixed platform; 401. Column; 402. Fixed screw column;

[0030] 5. Upper clamping plate; 501. First threaded sleeve;

[0031] 6. Moving stage; 601. Longitudinal groove; 602. Slider;

[0032] 7. Extrusion plate; 701. Sliding column;

[0033] 8. Clamping plate; 801. Guide rod;

[0034] 9. Clamping spring;

[0035] 10. Fixing block;

[0036] 11. Rotate the lead screw;

[0037] 12. Second threaded sleeve;

[0038] 13. The first spring;

[0039] 14. The second spring. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0041] Please see Figures 1-6 As an embodiment of the present invention, the surface adhesion peel strength testing device for the hydrogen electrolysis sealing component includes a housing 1; a test platform 2 is installed on the housing 1.

[0042] It also includes a fixed platform 4; the fixed platform 4 is fixedly connected to the test platform 2;

[0043] A movable stage 6; a slider 602 is mounted on the movable stage 6; a guide rail 201 is mounted on the test stage 2 to slide and engage with the slider 602;

[0044] The fastener includes an upper clamping plate 5, which is located near the fixing platform 4 to fix one end of the sealing element;

[0045] The clamping component includes multiple sets of clamping plates 8 symmetrically arranged on the moving stage 6, the clamping plates 8 being used to clamp the free end of the sealing component;

[0046] It also includes a test piece, including a second threaded sleeve 12 that slides into the test stage 2; the second threaded sleeve 12 is capable of providing the movable stage 6 with a compressive force along the length of the test stage 2 away from the fixed stage 4.

[0047] In this embodiment, one end of the pre-treated seal is placed on the fixed platform 4, and the seal is fixed by the fixing component (the position of the upper clamp 5 is adjusted according to the actual working condition of the seal; the upper clamp 5 is brought closer to the fixed platform 4, thereby gradually reducing the distance between the fixed platform 4 and the upper clamp 5 to fix one end of the seal), thereby simulating the actual working condition of the seal and improving the accuracy of the test results.

[0048] Then, an external force is applied to move the clamping plates 8 away from each other, and the free end of the seal is placed between the clamping plates 8. The external force is then removed, so that the clamping plates 8 can move closer to each other to clamp the free end.

[0049] When the test piece is started, the second threaded sleeve 12 gradually moves away from the fixed platform 4 along the length of the test platform 2. During this movement, the second threaded sleeve 12 compresses the moving platform 6 (causing the moving platform 6 to slide on the test platform 2, with the slider 602 slidingly engaging with the guide rail 201). As the compressive force of the second threaded sleeve 12 on the moving platform 6 increases, the seal gradually straightens. When the compressive force increases to a certain value, the seal slides against the fixed platform 4. At this point, the compressive force value is recorded, and the actual surface adhesion peel strength of the seal can be calculated. During the test, the compressive force of the second threaded sleeve 12 on the moving platform 6 increases relatively smoothly, and the measured data better reflects the true peel strength of the seal, rather than the impact peak value.

[0050] As a further embodiment of this utility model, the fixing component also includes a column 401 and a fixing screw column 402 installed on the fixing platform 4; the column 401 is slidably fitted with the upper clamping plate 5; and a first threaded sleeve 501 that is threadedly connected to the fixing screw column 402 is rotatably installed on the upper clamping plate 5.

[0051] In this embodiment, when fixing the seal, rotating the first threaded sleeve 501, through its threaded engagement with the fixing screw column 402, can drive the upper clamping plate 5 to slide on the column 401 and approach the fixing platform 4, thereby reducing the distance between the fixing platform 4 and the upper clamping plate 5.

[0052] The smaller the distance between the fixed platform 4 and the upper clamping plate 5, the better the sealing effect. According to the actual working conditions of the sealing component, the distance between the fixed platform 4 and the upper clamping plate 5 can be reasonably adjusted to improve the accuracy of the test results.

[0053] As a further embodiment of this utility model, the clamping member further includes a guide rod 801 mounted on the clamping plate 8; a pressing plate 7 is slidably mounted on the guide rod 801, and a clamping spring 9 is wrapped around the guide rod 801, with both ends of the clamping spring 9 abutting against the clamping plate 8 and the pressing plate 7 respectively; a longitudinal groove 601 is provided on the moving stage 6, and a sliding column 701 that slidably engages with the longitudinal groove 601 is mounted on the pressing plate 7.

[0054] As a further embodiment of this utility model, the clamping member also includes an inclined groove 202 and a horizontal groove 203 formed on the test platform 2 and slidably engaged with the sliding column 701; wherein one end of the inclined groove 202 is connected to one end of the horizontal groove 203.

[0055] In this embodiment, when clamping the free end of the seal, an external force is first applied to make the clamping plates 8 move away from each other. During this process, the clamping plates 8 drive the guide rod 801 to slide on the extrusion plate 7 and compress the clamping spring 9. Then, the free end of the seal is placed on the moving table 6 and the external force is removed. At this time, under the elastic force of the clamping spring 9, the clamping plates 8 will move closer to each other, thereby clamping the seal.

[0056] In the initial state, the sliding column 701 is located at the end of the inclined groove 202 away from the transverse groove 203.

[0057] During the test, as the pressure exerted by the second threaded sleeve 12 on the moving stage 6 increases, the moving stage 6 will first move away from the fixed stage 4 on the test stage 2, thereby driving the seal to move synchronously through the clamping plate 8, so that the seal is straightened (and undergoes elastic deformation after straightening); during this process, the sliding column 701 will slide in the inclined groove 202. Through the squeezing action of the groove wall of the inclined groove 202 on the sliding column 701, the sliding column 701 can be driven to slide in the longitudinal groove 601, thereby causing the squeezing plate 7 to gradually approach the clamping plate 8 and compress the clamping spring 9; as the compression of the clamping spring 9 increases, the clamping force of the clamping plate 8 on the seal will also increase, thereby avoiding the relative sliding between the clamping plate 8 and the seal during the test, which would lead to a large error in the test results.

[0058] Furthermore, once the sliding column 701 slides into the transverse groove 203, its position in the longitudinal groove 601 remains relatively fixed. This ensures that the clamping force of the clamping plate 8 on the seal remains constant, preventing excessive clamping force from damaging the seal and affecting the test results. During the stretching process, the seal will be stretched and thinned. If the clamping force remains constant, the initially suitable clamping force may be insufficient later, causing the specimen to slip. Conversely, if the initial clamping force is too large, it may damage the specimen and affect the test results.

[0059] As a further embodiment of this utility model, the test piece also includes a drive module 3 installed on the test bench 2; a rotating lead screw 11 is installed on the output end of the drive module 3; the rotating lead screw 11 is threadedly connected to the second threaded sleeve 12.

[0060] In this embodiment, during the test, the drive module 3 drives the rotating lead screw 11 to rotate, and through the threaded engagement with the second threaded sleeve 12, the second threaded sleeve 12 moves along the length of the rotating lead screw 11. During the movement, the compression action of the second threaded sleeve 12 on the moving platform 6 causes the moving platform 6 to gradually move away from the fixed platform 4, so that the seal gradually straightens (and undergoes elastic deformation) until the seal slides relative to the fixed platform 4. The threaded engagement between the second threaded sleeve 12 and the rotating lead screw 11 allows for a relatively effortless test.

[0061] As a further embodiment of this utility model, the test piece further includes a fixed block 10 mounted on the moving stage 6; a first spring 13 and a second spring 14 are wrapped around the rotating lead screw 11; and the first spring 13 and the second spring 14 are respectively disposed on both sides of the fixed block 10; wherein the two ends of the first spring 13 respectively abut against the second threaded sleeve 12 and the fixed block 10; and the two ends of the second spring 14 respectively abut against the fixed block 10 and the test stage 2.

[0062] In this embodiment, as the second threaded sleeve 12 moves away from the fixed platform 4, the squeezing force generated by its movement will first act on the first spring 13 and the second spring 14, thereby compressing the first spring 13 and the second spring 14; and as the first spring 13 and the second spring 14 are gradually compressed, the fixed block 10 will gradually move away from the fixed platform 4, thereby driving the seal to move through the clamping plate 8, causing the seal to gradually straighten, thereby increasing the force between the seal and the fixed platform 4. As the second threaded sleeve 12 moves, the seal will slide relative to the fixed platform 4. By recording the position of the second threaded sleeve 12 and calculating, the surface adhesion peel strength of the seal can be obtained.

[0063] The first spring 13 and the second spring 14 form a buffer system. The rotating screw column 11 drives the second threaded sleeve 12 to move. During the movement, the two springs are compressed first. As the first spring 13 and the second spring 14 deform, the force is gradually transmitted to the moving table 6. The deformation of the springs provides a buffer, gradually and linearly accumulating force until it smoothly overcomes the static friction force without producing an abrupt peak. This eliminates the inherent gaps and rigid impacts of traditional transmissions, ensuring the smooth application of force. The measured data can better reflect the true peel strength of the seal, rather than the impact peak.

[0064] The above embodiments are exemplary and not restrictive. Therefore, without departing from the spirit or basic characteristics of this utility model, any technical solutions that can be implemented in other specific forms are included in this utility model.

Claims

1. A surface adhesion peel strength testing device for hydrogen electrolysis sealing components, comprising a chassis (1); a test platform (2) is installed on the chassis (1); Its features are, It also includes a fixed platform (4); the fixed platform (4) is fixedly connected to the test platform (2); A movable stage (6); a slider (602) is installed on the movable stage (6); a guide rail (201) is installed on the test stage (2) and slides into the slider (602). The fastener includes an upper clamping plate (5), which is close to the fixing platform (4) to fix one end of the sealing element; The clamping component includes multiple sets of clamping plates (8) symmetrically arranged on the moving stage (6), the clamping plates (8) being used to clamp the free end of the seal; It also includes a test piece, including a second threaded sleeve (12) that slidably engages with the test stage (2); the second threaded sleeve (12) is capable of providing the movable stage (6) with a compressive force along the length of the test stage (2) away from the fixed stage (4).

2. The surface adhesion peel strength testing device for hydrogen electrolysis sealing components according to claim 1, characterized in that, The fixing component also includes a column (401) and a fixing screw column (402) installed on the fixing platform (4); the column (401) is slidably fitted with the upper clamping plate (5); a first threaded sleeve (501) that is threadedly connected to the fixing screw column (402) is rotatably installed on the upper clamping plate (5).

3. The surface adhesion peel strength testing device for hydrogen electrolysis sealing components according to claim 1, characterized in that, The clamping member also includes a guide rod (801) mounted on the clamping plate (8); a pressing plate (7) is slidably mounted on the guide rod (801), and a clamping spring (9) is wrapped around the guide rod (801). The two ends of the clamping spring (9) respectively abut against the clamping plate (8) and the pressing plate (7); a longitudinal groove (601) is provided on the moving stage (6), and a sliding column (701) is mounted on the pressing plate (7) and slidably engaged with the longitudinal groove (601).

4. The surface adhesion peel strength testing device for hydrogen electrolysis sealing components according to claim 3, characterized in that, The clamping member further includes an inclined groove (202) and a horizontal groove (203) formed on the test platform (2) and slidably engaged with the sliding column (701); wherein one end of the inclined groove (202) is connected to one end of the horizontal groove (203).

5. The surface adhesion peel strength testing device for hydrogen electrolysis sealing components according to claim 1, characterized in that, The test piece also includes a drive module (3) installed on the test bench (2); a rotating lead screw (11) is installed on the output end of the drive module (3); the rotating lead screw (11) is threadedly connected to the second threaded sleeve (12).

6. The surface adhesion peel strength testing device for a hydrogen electrolysis sealing component according to claim 5, characterized in that, The test piece also includes a fixed block (10) mounted on the movable stage (6); a first spring (13) and a second spring (14) are wrapped around the rotating lead screw (11); and the first spring (13) and the second spring (14) are respectively disposed on both sides of the fixed block (10); wherein the two ends of the first spring (13) abut against the second threaded sleeve (12) and the fixed block (10) respectively; and the two ends of the second spring (14) abut against the fixed block (10) and the test stage (2) respectively.

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