A salt spray test device suitable for membrane electrode of proton exchange membrane fuel cell

Abstract

The present invention belongs to the technical field of test equipment, and relates to a salt spray test device suitable for membrane electrodes of proton exchange membrane fuel cells, which solves the problems of poor operation convenience of existing test devices. The salt spray test device includes a test bench and two O-type placement tubes, a test pool is provided in the test bench, a spray unit is provided in the test pool, and the two O-type placement tubes are distributed in parallel and spaced apart, and can be detachably arranged on the inner wall of the test pool; the salt spray test device also includes a plurality of clamps, and a mounting hole is provided at the upper end of the clamp, and the O-type placement tube can pass through the mounting hole. During the test, the sample can be passed through the clamp and fixed on the clamp, and the distance between each clamp can be adjusted by moving along the O-type placement tube, thereby adjusting the distance between the samples. Since the two ends of the O-type placement tube are detachably arranged on the test pool, the O-type placement tube can be installed and disassembled according to actual needs, and the corresponding clamps can be increased or decreased, and the number and spacing of the test samples can be adjusted conveniently and quickly.

Description

Technical Field

[0001] The invention belongs to the technical field of test equipment and relates to a salt spray test device suitable for a membrane electrode of a proton exchange membrane fuel cell. Background Art

[0002] Proton exchange membrane fuel cells are an efficient and clean energy source. According to the requirements of green ship development, proton exchange membrane fuel cell systems are used in ships as ship power systems, and the air intake end is inevitably affected by salt spray in the marine atmospheric environment. Existing purification devices cannot completely solve this problem. It is difficult to conduct tests on battery corrosion by salt spray on battery test benches. Because the internal measurement equipment of the test bench is relatively precise, the simulated salt spray conditions at the air end entering the test bench will first have a bad impact on the precision equipment in the test bench and cause economic losses. For this reason, a salt spray test device simulating the marine atmospheric environment is proposed.

[0003] The salt spray test mainly uses the marine atmospheric environment conditions created by the salt spray test chamber to test the impact of salt spray on the sample and the diffusion and accumulation of sodium chloride in the salt spray on the membrane electrode under the long-term existence of this marine environment. The standard salt spray chamber requires that the placement method of the test sample flat sample should make the test surface form a 30-degree angle with the vertical direction. The sample is placed on a V-shaped load rack, and there is a dead angle between the salt spray test sample itself and the placement device, so the test sample test is not very accurate.

[0004] Patent CN208505865U discloses a flip sample rack in a salt spray chamber, including a support rod, both ends of the support rod are fixed with a shaft sleeve, the shaft sleeve and the support rod are an integral structure, the shaft sleeve is fixed with a rotating handle along its circumference, a rotating shaft matching it is inserted in the shaft sleeve, and a fixing rod is fixed at one end of the rotating shaft away from the shaft sleeve, the fixing rod and the rotating shaft are an integral structure, a plurality of sample fixing units are arranged on the support rod, and the sample fixing units all include a slip ring, the slip ring is sleeved on the support rod, a first fixing bolt is arranged on the slip ring, a sample fixing plate is fixed on one side of the slip ring away from the first fixing bolt, a sample card slot is arranged at one end of the sample fixing plate away from the slip ring, and a second fixing bolt is arranged at a position corresponding to the sample card slot on the sample fixing plate. When it is necessary to inspect and observe the test sample, it is only necessary to rotate the support rod by rotating the handle to realize the flipping observation of the test sample, so that the state of each surface of the sample can be effectively observed without affecting the state of the protective film on the surface of the sample.

[0005] However, the structure of the sample rack is relatively complex, and the movement and assembly and disassembly of the sample fixing plate are complicated, which is not suitable for practical use. Summary of the invention

[0006] The purpose of the present invention is to solve the above problems in the existing technology and propose a salt spray test device suitable for proton exchange membrane fuel cell membrane electrode. The technical problem to be solved by the present invention is: how to improve the convenience of use of the salt spray test device.

[0007] The purpose of the present invention can be achieved by the following technical solutions:

[0008] A salt spray test device suitable for a membrane electrode of a proton exchange membrane fuel cell, characterized in that the salt spray test device comprises a test bench and two O-type placement tubes, wherein a test pool is provided in the test bench, a spray unit is provided in the test pool, the two O-type placement tubes are distributed in parallel and spaced apart, and both ends of the O-type placement tubes are detachably arranged on the inner wall of the test pool; the salt spray test device also comprises a plurality of clamps for clamping samples, the upper ends of the clamps are provided with mounting holes corresponding to the O-type placement tubes, and the O-type placement tubes can pass through the mounting holes.

[0009] Its working principle is as follows: during the test, the sample can be fixed on the fixture through the fixture, and the distance between the fixtures can be adjusted by moving along the O-type placement tube, thereby adjusting the distance between the samples. Since the two ends of the O-type placement tube can be detachably set on the test pool, the O-type placement tube can be installed and removed according to actual needs, and the corresponding fixtures can be increased or decreased. The number and spacing of the test samples can be adjusted conveniently and quickly. After the sample is fixed, the corresponding salt spray is sprayed through the spray unit. Since the sample is fixed by clamping the fixture, it can be better and more evenly contacted with the salt spray, and it is not easy to have dead corners. The overall test simulates the marine atmospheric environment conditions to examine the effect of salt spray on the membrane electrode, avoiding the air-end salt spray pollution experiment on the proton exchange membrane fuel cell bench, and reducing the experimental cost. The salt spray state in the salt spray test box is close to the real marine environment, and the salt spray particle size is less than 5um, which is close to the real marine environment, and the accuracy of the experiment is guaranteed.

[0010] In the above-mentioned salt spray test device suitable for membrane electrode of proton exchange membrane fuel cell, the spray unit includes a spray tower, a height adjuster is arranged below the spray tower, a salt water preheating tank is arranged at the upper end of the spray tower, the salt water preheating tank is connected to the salt water replenishing chamber through hose 1, and a heating water tank is arranged at the bottom of the test pool. The salt water replenishing chamber can transport salt water into the spray tower through hose 1, and after preheating, it is finally sprayed out by the spray tower to form a salt spray environment; the heating water tank can be used to adjust the temperature and humidity in the test pool.

[0011] In the above-mentioned salt spray test device suitable for membrane electrode of proton exchange membrane fuel cell, a conical collecting funnel is arranged in the test pool, and the lower end of the conical collecting funnel is connected to a metering bucket through hose 2. After the conical collecting funnel is designed, the salt spray can be settled by free fall from the conical collecting funnel through hose 2 into the metering bucket.

[0012] In the above-mentioned salt spray test device suitable for membrane electrode of proton exchange membrane fuel cell, the clamp includes upper clamp plate 1, upper clamp plate 2, lower clamp plate 1 and lower clamp plate 2, the mounting holes are opened on the upper clamp plate 1 and upper clamp plate 2, an adjusting piece 1 capable of bringing the two closer and apart is arranged between the upper clamp plate 1 and upper clamp plate 2, and an adjusting piece 2 capable of bringing the two closer and apart is arranged between the lower clamp plate 1 and lower clamp plate 2. When in use, the O-type storage tube can be passed through the mounting holes on the upper clamp plate 1 and upper clamp plate 2, and the distance between the lower clamp plate 1 and lower clamp plate 2 can be adjusted by operating the adjusting piece 2, so as to clamp the sample, and the sample can be clamped by the plate surface to avoid damage to the sample.

[0013] In the above-mentioned salt spray test device suitable for membrane electrode of proton exchange membrane fuel cell, a flexible connector 1 is provided between the upper clamping plate 1 and the upper clamping plate 2, and a flexible connector 2 is provided between the lower clamping plate 1 and the lower clamping plate 2. The flexible connector 1 and the flexible connector 2 are designed to ensure that the upper clamping plate 1 and the upper clamping plate 2, and the lower clamping plate 1 and the lower clamping plate 2 can approach and separate from each other while realizing the connection between the upper clamping plate 1 and the upper clamping plate 2, and the lower clamping plate 1 and the lower clamping plate 2.

[0014] In the above-mentioned salt spray test device suitable for membrane electrode of proton exchange membrane fuel cell, the adjusting member 1 and the adjusting member 2 include bolt 1 and bolt 2, the upper clamping plate 1 and the upper clamping plate 2 are provided with an adjusting hole 1 corresponding to the bolt 1, and the lower clamping plate 1 and the lower clamping plate 2 are provided with an adjusting hole 2 corresponding to the bolt 2. By rotating the bolt 1 and the bolt 2, the distance between the upper clamping plate 1 and the upper clamping plate 2, and the distance between the lower clamping plate 1 and the lower clamping plate 2 can be adjusted.

[0015] In the above-mentioned salt spray test device for membrane electrode of proton exchange membrane fuel cell, the inner wall of the test pool is provided with a turntable corresponding to the end of the O-type placement tube, the turntable is provided with a stud, and the end of the O-type placement tube is provided with a threaded hole corresponding to the stud. During installation, the O-type placement tube can be threadedly connected to the stud to achieve detachability and facilitate the increase or decrease of the number of fixtures; and after the turntable is designed, it is convenient to flip the O-type placement tube to check the sample.

[0016] In the above-mentioned salt spray test device for proton exchange membrane fuel cell membrane electrode, the turntable is provided with a slot, one end of which passes through the edge of the turntable, a card plate is clamped in the slot, and the stud is fixed on the card plate. After the card plate and the slot are designed, it is convenient to assemble and disassemble the two O-type storage tubes as a whole.

[0017] In the above-mentioned salt spray test device suitable for membrane electrode of proton exchange membrane fuel cell, the O-type storage tube includes coaxially arranged tube body 1 and tube body 2, the threaded hole is opened at the outer end of tube body 1 and the outer end of tube body 2, a handle is arranged between tube body 1 and tube body 2, and a through hole is opened at the lower end of the handle, and the inner end of tube body 1 and the inner end of tube body 2 can be inserted into the through hole. The control handle can drive the O-type storage tube to flip, thereby driving the sample to flip for easy viewing; because the through hole is opened on the handle, the way of fixture installation and disassembly is increased, and the handle is moved to tube body 1 or tube body 2, so that the distance between tube body 1 and tube body 2 is vacated, and the fixture can be moved to the distance to be removed, which is convenient and quick to operate; and the design of the handle and the through hole itself makes the distance between tube body 1, tube body 2 and the turntable adjustable, which improves the convenience of installation and can compensate for the precision error of parts.

[0018] In the above-mentioned salt spray test device for proton exchange membrane fuel cell membrane electrode, a groove is provided at the upper end of the handle, and a counterweight block is detachably arranged in the groove. The counterweight block is designed so that when the sample needs to be observed for a long time, the counterweight block can be placed in the groove so that the O-type storage tube remains in an inverted state.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] 1. Since both ends of the O-type tube can be detachably mounted on the test pool, the O-type tube can be installed or removed according to actual needs, and the corresponding fixtures can be added or reduced. The number and spacing of the test samples can be adjusted conveniently and quickly;

[0021] 2. Since the sample is fixed by clamping, it can be more evenly exposed to the salt spray and there is no dead angle;

[0022] 3. Clamping the sample by the plate surface can avoid damage to the sample;

[0023] 4. Since the handle is provided with a through hole, the way of installing and removing the clamp is increased. When the handle is moved to the tube body 1 or the tube body 2, the distance between the tube body 1 and the tube body 2 is vacated, and the clamp can be moved to the distance and removed, which is convenient and quick to operate;

[0024] 5. A counterweight block is designed. When the sample needs to be observed for a long time, the counterweight block can be placed in the groove to keep the O-type tube in an inverted state. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the salt spray test device.

[0026] Figure 2 It is a schematic diagram of the structure of the O-type placement tube and the clamp.

[0027] Figure 3 It is a schematic diagram of the structure of the fixture.

[0028] Figure 4 is a side view of the fixture.

[0029] Figure 5 This is an exploded view of the O-type storage tube.

[0030] In the figure, 1, test bench; 2, O-type storage tube; 3, test pool; 4, spray unit; 5, clamp; 6, mounting hole; 7, spray tower; 8, height adjuster; 9, hose 1; 10, conical collecting funnel; 11, hose 2; 12, sample; 13, upper clamping plate 1; 14, upper clamping plate 2; 15, adjusting piece 1; 16, lower clamping plate 1; 17, lower clamping plate 2; 18, adjusting piece 2; 19, turntable; 20, stud; 21, threaded hole; 22, slot; 23, clamping plate; 24, tube body 1; 25, tube body 2; 26, handle; 27, groove; 28, counterweight. DETAILED DESCRIPTION

[0031] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0032] like Figure 1 As shown, the salt spray test device includes a test bench 1 and two O-type tubes 2. A test pool 3 is provided in the test bench 1. A spray unit 4 is provided in the test pool 3. The two O-type tubes 2 are distributed in parallel and spaced apart, and both ends of the O-type tubes 2 are detachably arranged on the inner wall of the test pool 3. The salt spray test device also includes a plurality of clamps 5 for clamping the sample 12. The upper end of the clamp 5 is provided with a mounting hole 6 corresponding to the O-type tube 2, and the O-type tube 2 can pass through the mounting hole 6.

[0033] Specifically, the spray unit 4 includes a spray tower 7, a height adjuster 8 is provided below the spray tower 7, a brine preheating tank is provided at the upper end of the spray tower 7, the brine preheating tank is connected to the brine replenishing chamber through a hose 1 9, and a heating water tank is provided at the bottom of the test pool 3. A conical collecting funnel 10 is provided in the test pool 3, and the lower end of the conical collecting funnel 10 is connected to a metering bucket through a hose 2 11.

[0034] like Figure 2 , Figure 3 , Figure 4As shown, the clamp 5 includes an upper clamp plate 13, an upper clamp plate 14, a lower clamp plate 16 and a lower clamp plate 17, the mounting holes 6 are opened on the upper clamp plate 13 and the upper clamp plate 14, an adjusting member 15 is arranged between the upper clamp plate 13 and the upper clamp plate 14 for bringing the two closer together and apart, and an adjusting member 18 is arranged between the upper clamp plate 16 and the lower clamp plate 17 for bringing the two closer together and apart.

[0035] Specifically, a flexible connector 1 is provided between the upper clamping plate 13 and the upper clamping plate 2 14, and a flexible connector 2 is provided between the lower clamping plate 16 and the lower clamping plate 2 17. The flexible connector 1 and the flexible connector 2 can be springs, elastic metals, ropes, etc.

[0036] In this embodiment, the adjusting member 15 and the adjusting member 2 18 include a bolt 1 and a bolt 2, and an adjusting hole 1 corresponding to the bolt 1 is provided on the upper clamping plate 13 and the upper clamping plate 2 14, and an adjusting hole 2 corresponding to the bolt 2 is provided on the lower clamping plate 16 and the lower clamping plate 2 17. As another solution, the adjusting member 15 and the adjusting member 2 18 may also be elastic members such as compression springs.

[0037] like Figure 5 As shown, the inner wall of the test pool 3 is provided with a turntable 19 corresponding to the end of the O-type placement tube 2, a stud 20 is arranged on the turntable 19, and a threaded hole 21 corresponding to the stud 20 is arranged at the end of the O-type placement tube 2. The turntable 19 is provided with a slot 22, one end of which passes through the edge of the turntable 19, a clamping plate 23 is clamped in the slot 22, and the stud 20 is fixed on the clamping plate 23. The O-type placement tube 2 includes a coaxially arranged tube body 1 24 and a tube body 2 25, the threaded hole 21 is provided at the outer end of the tube body 1 24 and the outer end of the tube body 2 25, a handle 26 is provided between the tube body 1 24 and the tube body 2 25, the lower end of the handle 26 is provided with a through hole, and the inner end of the tube body 1 24 and the inner end of the tube body 2 25 can be inserted into the through hole. A groove 27 is provided at the upper end of the handle 26, and a counterweight block 28 is detachably provided in the groove 27.

[0038] The working principle of the present invention is as follows: during the test, the sample 12 can be fixed on the clamp through the clamp, and the distance between the clamps can be adjusted by moving along the O-shaped tube, thereby adjusting the distance between the samples 12; when it is necessary to observe the sample 12 for a long time, the counterweight block can be placed in the groove to keep the O-shaped tube in an inverted state.

[0039] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A salt spray test device suitable for proton exchange membrane fuel cell membrane electrode, characterized in that: The salt spray test device comprises a test bench (1) and two O-shaped tubes (2), wherein a test pool (3) is provided in the test bench (1), a spray unit (4) is provided in the test pool (3), the two O-shaped tubes (2) are arranged in parallel and spaced apart, and the two ends of the O-shaped tubes (2) are detachably arranged on the inner wall of the test pool (3); the salt spray test device also comprises a plurality of clamps (5) for clamping the sample (12), the upper end of the clamp (5) is provided with a mounting hole (6) corresponding to the O-shaped tube (2), and the O-shaped tube (2) can pass through the mounting hole (6); The spray unit (4) comprises a spray tower (7), a height adjuster (8) is arranged below the spray tower (7), a brine preheating tank is arranged at the upper end of the spray tower (7), the brine preheating tank is connected to the brine replenishing chamber through a hose (9), and a heating water tank is arranged at the bottom of the test pool (3); A conical collecting funnel (10) is arranged in the test pool (3), and the lower end of the conical collecting funnel (10) is connected to a measuring bucket via a second hose (11); The clamp (5) comprises an upper clamp plate 1 (13), an upper clamp plate 2 (14), a lower clamp plate 1 (16) and a lower clamp plate 2 (17); the mounting hole (6) is provided on the upper clamp plate 1 (13) and the upper clamp plate 2 (14); an adjusting member 1 (15) is provided between the upper clamp plate 1 (13) and the upper clamp plate 2 (14) to enable the two to be brought closer or separated; and an adjusting member 2 (18) is provided between the upper clamp plate 1 (16) and the lower clamp plate 2 (17) to enable the two to be brought closer or separated.

2. The salt spray test device for proton exchange membrane fuel cell membrane electrode according to claim 1 is characterized in that: A flexible connector 1 is provided between the upper clamping plate 1 (13) and the upper clamping plate 2 (14), and a flexible connector 2 is provided between the lower clamping plate 1 (16) and the lower clamping plate 2 (17).

3. The salt spray test device for proton exchange membrane fuel cell membrane electrode according to claim 2 is characterized in that: The adjusting member 1 (15) and the adjusting member 2 (18) comprise a bolt 1 and a bolt 2, the upper clamping plate 1 (13) and the upper clamping plate 2 (14) are provided with an adjusting hole 1 corresponding to the bolt 1, and the lower clamping plate 1 (16) and the lower clamping plate 2 (17) are provided with an adjusting hole 2 corresponding to the bolt 2.

4. The salt spray test device for proton exchange membrane fuel cell membrane electrode according to claim 3 is characterized in that: The inner wall of the test pool (3) is provided with a turntable (19) corresponding to the end of the O-shaped placement tube (2), a stud (20) is arranged on the turntable (19), and the end of the O-shaped placement tube (2) is provided with a threaded hole (21) corresponding to the stud (20).

5. The salt spray test device for proton exchange membrane fuel cell membrane electrode according to claim 4 is characterized in that: The rotating disk (19) is provided with a slot (22), one end of which passes through the edge of the rotating disk (19), a clamping plate (23) is clamped in the slot (22), and the stud (20) is fixed on the clamping plate (23).

6. The salt spray test device for proton exchange membrane fuel cell membrane electrode according to claim 5, characterized in that: The O-type storage tube (2) comprises a coaxially arranged tube body 1 (24) and a coaxially arranged tube body 2 (25); the threaded hole (21) is provided at the outer end of the tube body 1 (24) and the outer end of the tube body 2 (25); a handle (26) is provided between the tube body 1 (24) and the tube body 2 (25); a through hole is provided at the lower end of the handle (26); the inner end of the tube body 1 (24) and the inner end of the tube body 2 (25) can be inserted into the through hole.

7. The salt spray test device for proton exchange membrane fuel cell membrane electrode according to claim 6, characterized in that: A groove (27) is provided at the upper end of the handle (26), and a counterweight block (28) is detachably arranged in the groove (27).

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