Fixture with flow field for testing surface resistance of ion exchange membrane

Abstract

The utility model discloses a clamp with a flow field for testing the surface resistance of an ion exchange membrane, which belongs to the technical field of clamps with flow fields, and is characterized in that a 2mm wall thickness is reserved at the bottom of a clamp main body water tank 5 instead of a through hole formed in an upper cover so as to prevent liquid from being exposed from the bottom, and whether the membrane is correctly clamped or not can be observed from a water tank of the upper cover; the size of the general assembly is 70 * 40 * 20 cm, the diameter of the threaded hole is 6 mm, the diameter of the bolt is M6, and the maximum length and width of the water tank are 2 * 2 cm. The bosses are additionally arranged in the 1-window, and the flow channels are designed between the bosses, so that the platinum sheet can be effectively supported, liquid can conveniently enter the flow channels, and the lasting wetting effect of the membrane and the concentration uniformity of the solution are ensured. 2, the left-right symmetrical structure of the clamp main body is convenient for the entering length of the electrode plate, and the structure can be flexibly adjusted to change the effective length of the tested film;

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of test ion exchange membrane surface resistance's with flow field fixture, belong to with flow field fixture technical field. BACKGROUND

[0002] Resistivity is the inherent electrical property of material, indicating the degree of obstruction of material to current passing.

[0003] In thin film material, resistivity measurement can not only reflect the electrical conductivity of material, but also reveal the material structure, uniformity and defect condition.

[0004] As for the application number: 201720134661.2 proposes a clamp for measuring ion exchange membrane, which is composed of mutually buckled upper clamp and lower clamp. The upper and lower clamps have cavities inside for placing the measured ion exchange membrane. The two cavities form a sealed air chamber after buckling. Two conductive sheets are fixed in the cavities, and the insulating plate is provided with an air pipe joint communicating with the air chamber. The patent changes the temperature and humidity of the membrane through the air chamber, which is suitable for measuring the electrical conductivity of fuel cell exchange membrane under different temperature and humidity gas conditions. The difference between this patent and the above-mentioned patent is that the flow field structure in the clamp can better ensure the wetting effect of pure water or other solutions on the measured membrane, which is suitable for accurate measurement of the surface resistance of ion exchange membrane under different environments.

[0005] As for the application number: 202222881012.2 discloses a structure characterized by two upper and lower clamps, which are completely the same. The clamps are fixed with platinum sheets by setting clamping blocks on the upper and lower clamps. The ion exchange membrane is placed in the middle of the platinum sheet, and solution can be added to the windows on both sides of the membrane for wetting.

[0006] Disadvantage 1: unable to maintain the wetness of the membrane and uniform wetness;

[0007] Disadvantage 2: unable to change the effective length of the measured membrane;

[0008] Disadvantage 3: only the membrane with fixed area and length can be tested.

[0009] The above background technology is improved. Utility model content

[0010] The main purpose of the utility model is to provide a kind of test ion exchange membrane surface resistance's with flow field fixture.

[0011] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0012] A kind of test ion exchange membrane surface resistance's with flow field fixture, including the fixture main body for clamping, fixture main body is covered with clamp upper cover;

[0013] The clamp main body comprises a left electrode port, a threaded hole, a main body water tank, a small boss, a large boss and a right electrode port;

[0014] The clamp upper cover comprises a clamping groove protrusion, an upper cover threaded port, an upper cover small boss, an upper cover large boss, a flow channel and an upper cover water tank.

[0015] Preferably, the clamp main body is provided with threaded holes on both sides, a large boss is arranged in the middle of the clamp main body, small bosses are arranged on both sides of the large boss, a main body water tank is arranged in the middle of the clamp main body, a right electrode port is arranged on the outer side of the main body water tank, and a left electrode port is arranged on the other side of the large boss.

[0016] Preferably, the clamp upper cover is provided with clamping groove protrusions on both sides, upper cover threaded ports are arranged on both sides of the clamp upper cover, an upper cover water tank is arranged in the middle of the clamp main body, an upper cover large boss is arranged in the upper cover water tank, upper cover small bosses are arranged on both sides of the upper cover large boss, and a flow channel is arranged around the upper cover large boss.

[0017] Preferably, the bottom of the main body water tank is provided with a wall thickness of 2 mm.

[0018] Preferably, the clamp upper cover covers the clamp main body.

[0019] Preferably, the electrode sheets are arranged in the left electrode port and the right electrode port respectively.

[0020] The beneficial technical effects of the utility model are as follows:

[0021] The utility model provides a kind of test ion exchange membrane surface resistance's with flow field clamp,

[0022] 1-the boss is added in window, and flow channel is designed between boss, which can effectively support platinum sheet, and liquid can be conveniently entered into flow channel, ensure that membrane is durable wet effect, and the concentration uniformity of solution.

[0023] 2-the left-right symmetry structure of clamp main body is convenient for the length of electrode sheet to enter, and this structure can be flexibly adjusted, and the effective length of tested membrane is changed. DETAILED DESCRIPTION

[0024] Figure 1 It is a preferred embodiment of the device assembly body of the utility model for testing ion exchange membrane surface resistance's with flow field clamp;

[0025] Figure 2 It is the main body structure three-dimensional schematic diagram of a preferred embodiment of the utility model for testing ion exchange membrane surface resistance's with flow field clamp;

[0026] Figure 3 It is the upper cover structure three-dimensional schematic diagram of a preferred embodiment of the utility model for testing ion exchange membrane surface resistance's with flow field clamp.

[0027] In the figure: 1, clamp body; 2, clamp upper cover; 3, left electrode port; 4, threaded hole; 5, main body water tank; 6, small boss; 7, large boss; 8, right electrode port; 9, clamping groove protrusion; 10, upper cover threaded port; 11, upper cover small boss; 12, upper cover large boss; 13, flow channel; 14, upper cover water tank. DETAILED DESCRIPTION

[0028] In order for those skilled in the art to more clearly and clearly understand the technical scheme of the utility model, the utility model will be further described in detail below in conjunction with the embodiments and drawings, but the implementation manner of the utility model is not limited thereto.

[0029] As shown in Figure 1 - Figure 3 The embodiment provides a kind of test ion exchange membrane surface resistance's band flow field clamp, including the clamp body 1 for clamping, clamp body 1 is covered with clamp upper cover 2 on;

[0030] Clamp body 1 includes left electrode port 3, threaded hole 4, main body water tank 5, small boss 6, large boss 7 and right electrode port 8 in it;

[0031] Clamp upper cover 2 includes clamping groove protrusion 9, upper cover threaded port 10, upper cover small boss 11, upper cover large boss 12, flow channel 13 and upper cover water tank 14 in it.

[0032] Threaded hole 4 is set in the two sides of clamp body 1, large boss 7 is installed in the middle of clamp body 1, small boss 6 is distributed in the two sides of large boss 7, main body water tank 5 is set in the middle of clamp body 1, right electrode port 8 is set in the outside of main body water tank 5, left electrode port 3 is set in the other side of large boss 7.

[0033] Clamping groove protrusion 9 is installed in the two sides of clamp upper cover 2, upper cover threaded port 10 is set in the two sides of clamp upper cover 2, upper cover water tank 14 is set in the middle of clamp body 1, upper cover large boss 12 is installed in upper cover water tank 14, upper cover small boss 11 is distributed in the two sides of upper cover large boss 12, flow channel 13 is installed around on upper cover large boss 12.

[0034] The bottom of main body water tank 5 remains 2mm wall thickness.

[0035] Clamp upper cover 2 is covered on clamp body 1.

[0036] Electrode sheet is placed in left electrode port 3 and right electrode port 8 respectively.

[0037] As shown in Figure 1 - Figure 3 The working process of the test ion exchange membrane surface resistance's band flow field clamp provided by the embodiment is as follows: 0.5-2cm 2The film is put into the boss of the clamp body 1, the corresponding width size of the electrode sheet is prepared, one piece is put into the left electrode port 3 of the clamp body 1, another piece is put into the right electrode port 8 of the clamp body 1, the end of the two electrode sheets is placed on the boss 7 to cover the film, a distance is left between the two electrode sheets, the length of the electrode sheet should be greater than or equal to 30 mm, so that the electrode clamp can clamp the electrode sheet, if the width of the electrode sheet is less than 20 mm, the electrode sheet can be fixed by using adhesive tape, finally the clamp upper cover 2 is closed, if wet state test is needed, water or other solution is added in the water tank, and the film surface resistance and the film resistivity can be measured by cooperating with the electrochemical workstation.

[0038] Embodiment

[0039] As shown in the figure, a clamp is composed of a clamp body 1 and a clamp upper cover 2, the electrode sheet and the film to be tested are installed, and a bolt and a nut can be installed in the through hole at both ends to increase the torque and reduce the contact resistance. Figure 1 Figure 3 As shown in the figure, the clamp is composed of a clamp body 1, a clamp upper cover 2, a left electrode port 3, a threaded hole 4, a body water tank 5, a small boss 6, a large boss 7, a right electrode port 8, a clamping groove protrusion 9, an upper cover threaded hole 10, an upper cover small boss 11, an upper cover large boss 12, a flow channel 13, an upper cover water tank 14 and the like.

[0040] As shown in the figure, the clamp is composed of a clamp body 1, a clamp upper cover 2, a left electrode port 3, a threaded hole 4, a body water tank 5, a small boss 6, a large boss 7, a right electrode port 8, a clamping groove protrusion 9, an upper cover threaded hole 10, an upper cover small boss 11, an upper cover large boss 12, a flow channel 13, an upper cover water tank 14 and the like. Figure 1 Figure 3 Water can be injected from the upper cover water tank 14, the clamp body water tank 5 is not a through hole like the upper cover, but has a 2mm thick wall at the bottom to prevent liquid from leaking out of the bottom, and the film can also be observed from the upper cover water tank to determine whether it is clamped correctly

[0041] The material of the clamp can be selected from PTFE (polytetrafluoroethylene), PET (polyethylene terephthalate), PE (polyethylene), PP (polypropylene), PPS (polyphenylene sulfide), PI (polyimide), PSU (polysulfone) and the like, which has good mechanical strength, corrosion resistance and insulation characteristics, and the overall assembly size is 70*40*20cm, the threaded hole diameter is 6mm, the bolt diameter is M6, and the maximum length and width of the water tank is 2*2cm.

[0042] The clamp body and the clamp upper cover are connected by mortise and tenon plus screw connection, but pin connection, glue connection and the like can also realize the present application

[0043] The shape or size of the flow channel and the boss can also be changed to realize the present application, such as a snake-shaped, interdigital, wave-shaped, bionic type and the like.

[0044] The shape or size of the flow channel and the boss can also be changed to realize the present application, such as a snake-shaped, interdigital, wave-shaped, bionic type and the like.

[0045] ​​The above merely illustrates the further embodiments of the present application, but the protection scope of the present application is not limited thereto, any skilled in the art can make equivalent substitutions or changes according to the technical scheme and concept of the present application within the disclosed scope, which all belong to the protection scope of the present application.

Claims

1. A flow field goniometer for testing the surface resistance of an ion exchange membrane, characterized by: Including the clamp body (1) for clamping, the clamp body (1) is covered with clamp upper cover (2); The clamp body (1) includes left electrode port (3), threaded hole (4), body water tank (5), small boss (6), large boss (7) and right electrode port (8); The clamp upper cover (2) includes clamping groove convex tooth (9), upper cover threaded port (10), upper cover small boss (11), upper cover large boss (12), flow channel (13) and upper cover water tank (14).

2. The test fixture for measuring the area resistance of ion exchange membranes with flow field according to claim 1, characterized in that: Threaded holes (4) are respectively arranged on both sides of the clamp body (1), the large boss (7) is installed in the middle of the clamp body (1), the small bosses (6) are distributed on both sides of the large boss (7), the body water tank (5) is arranged in the middle of the clamp body (1), the right electrode port (8) is arranged on the outer side of the body water tank (5), and the left electrode port (3) is arranged on the other side of the large boss (7).

3. The test fixture for measuring the face resistance of ion exchange membranes with flow field according to claim 2, characterized in that: The clamping groove convex teeth (9) are respectively installed on both sides of the clamp upper cover (2), the upper cover threaded ports (10) are respectively arranged on both sides of the clamp upper cover (2), the upper cover water tank (14) is arranged in the middle of the clamp body (1), the upper cover large boss (12) is installed in the upper cover water tank (14), the upper cover small bosses (11) are respectively distributed on both sides of the upper cover large boss (12), and the flow channel (13) is installed around the upper cover large boss (12).

4. The test fixture for measuring the face resistance of ion exchange membranes with flow field according to claim 3, characterized in that: The bottom of the body water tank (5) has a wall thickness of 2mm.

5. The test fixture for measuring the face resistance of ion exchange membranes with flow field according to claim 4, characterized in that: The clamp upper cover (2) is covered on the clamp body (1).

6. The test fixture for measuring the face resistance of ion exchange membranes with flow field according to claim 5, characterized in that: The electrode sheets are respectively placed in the left electrode port (3) and the right electrode port (8).

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