Device for testing air permeability of proton exchange membrane

Abstract

The invention relates to the technical field of proton exchange membrane testing equipment, in particular to a proton exchange membrane breathability testing device, a bracket is fixedly mounted at the bottom of a thermostatic chamber of a thermostatic bath, a testing device body is arranged on the upper side of the bracket, and the testing device body and the inner wall of the thermostatic chamber are arranged at intervals. According to the test device, the test device main body is arranged in the thermostatic bath, the whole test environment can be kept at a constant temperature through the thermostatic bath, the test of the proton exchange membrane is more accurate, and the test device can be adjusted to different temperature environments through the thermostatic bath, so that the proton exchange membrane can be tested in the different temperature environments; therefore, the air permeability of the proton exchange membrane can be mastered as a whole, so that fuel cells used in different environments can be accurately evaluated.

Description

Technical Field

[0001] The invention relates to the technical field of proton exchange membrane testing equipment, in particular to a proton exchange membrane air permeability testing device. Background Art

[0002] The proton exchange membrane is the core component of the proton exchange membrane fuel cell, and its performance is directly related to the overall efficiency and life of the fuel cell. Therefore, the quality of the proton exchange membrane directly determines the overall efficiency and life of the fuel cell, which requires a series of tests on the proton exchange membrane, such as thickness uniformity test, proton conductivity test, ion exchange equivalent test, air permeability test, tensile performance test, etc.

[0003] The purpose of the proton exchange membrane permeability test is to evaluate the barrier performance of the membrane material to gases (such as hydrogen, oxygen, etc.). In fuel cell applications, the proton exchange membrane needs to minimize gas permeation while ensuring proton conduction to improve the efficiency and safety of the battery. For example, in a hydrogen fuel cell, if hydrogen excessively permeates the proton exchange membrane and mixes with oxygen, it may cause an explosion hazard and also reduce the energy conversion efficiency of the battery.

[0004] At present, when testing the permeability of proton exchange membranes, the test method is based on the principle of gas permeation. The proton exchange membrane is placed between the upper and lower chambers of the test device, one of which is filled with test gas (such as hydrogen) and the other chamber is kept in vacuum or filled with carrier gas (such as nitrogen). The permeability of the proton exchange membrane is evaluated by detecting the amount of gas that passes through the proton exchange membrane.

[0005] However, the inventors found that the permeability of the proton exchange membrane is different at different temperatures. Since the temperature of the working environment of the fuel cell is uncertain, the traditional testing method cannot truly test the permeability of the proton exchange membrane, and thus cannot test the permeability of the proton exchange membrane as a whole. Summary of the invention

[0006] The object of the present invention is to provide a proton exchange membrane permeability testing device and a testing method to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions: The proton exchange membrane permeability test device comprises a constant temperature bath, a test device body and a temperature detection device arranged in the constant temperature bath, a bracket is fixedly installed at the bottom of the constant temperature chamber of the constant temperature bath, and the test device body is arranged on the upper side of the bracket so that the test device body is spaced from the inner wall of the constant temperature chamber.

[0008] Preferably, an upper chamber and a lower chamber are provided in the main body of the testing device, and a detachable sealed connection is provided between the upper chamber and the lower chamber. The proton exchange membrane to be tested is clamped between the upper chamber and the lower chamber, the upper chamber is connected to a test gas input pipe, and the lower chamber is connected to a carrier gas input pipe.

[0009] Preferably, the temperature detection device comprises a support seat, the top end of the support seat is fixedly connected to a support rod, the outer wall of the support rod is slidably connected to a mounting plate, the inner wall of the mounting plate is provided with an adjustment mechanism, the inner cavity of the mounting plate is provided with a telescopic mechanism, and the top end of the support rod is fixedly connected to a data collector; The adjustment mechanism includes a movable cavity, which is opened in the inner wall of the mounting plate, a half gear ring is rotatably connected to the bottom wall of the movable cavity, a telescopic rod is fixedly connected to the side of the half gear ring, a first driven wheel is meshedly arranged on the inner side wall of the half gear ring, and an inner gear ring is meshedly arranged at the other end of the first driven wheel, an inner gear ring is slidably connected to the top end of the inner gear ring, and the top end of the inner gear ring is rotatably connected to the inner wall of the movable cavity, and a telescopic rod with the same structure is fixedly connected to one side of the inner gear ring.

[0010] Preferably, the adjustment mechanism further comprises a rotating ring, the outer wall of the rotating ring is rotatably connected to the inner wall of the active cavity, a transmission disc is fitted in the inner wall of the rotating ring, a second driven wheel is meshed in the inner wall of the transmission disc, and the shaft end of the second driven wheel extends downward to be rotatably connected to the bottom wall of the active cavity, and two groups of second driven wheels are spaced apart along the axial direction of the transmission disc, and the two groups of the second driven wheels are respectively meshed with the inner wall of the transmission disc and the first driven wheel; A circle of rubber layer is fixedly connected to the outer wall of the transmission disc, and the outer wall of the rubber layer is tightly fitted with the inner wall of the rotating ring.

[0011] Preferably, telescopic rods with the same structure are fixedly connected to the half gear ring, the inner gear ring, the inner gear ring and the rotating ring, and a plurality of telescopic rods are arranged in a circular array with equal intervals.

[0012] Preferably, the telescopic mechanism includes an operating compartment, which is opened at the rear end of the telescopic rod, and a transmission gear is rotatably connected in the inner wall of the operating compartment, and two groups of arc plates are symmetrically arranged on both sides of the rotating shaft of the transmission gear. The bottoms of the two groups of arc plates are hinged, and the two groups of arc plates are connected to torsion springs, so that the two groups of arc plates move inward and lock the transmission gear through the rotating shaft, and push plates are hinged on the outer walls of the two groups of arc plates, and the top ends of the two groups of push plates are hinged to the same extrusion plate, and a return spring is sleeved on the outer wall of the extrusion plate.

[0013] Preferably, the telescopic rod includes a rotating cavity, which is opened in the inner wall of the telescopic rod, the inner wall of the telescopic rod is threadedly connected to an inner cylinder, and the front end of the inner cylinder is fixedly connected to a temperature measuring head, the inner wall of the inner cylinder is slidably connected to a rotating rod through a spline, and the rear end of the rotating rod is fixedly connected to the transmission gear.

[0014] Preferably, the telescopic mechanism further comprises an installation bin, the outer wall of the installation bin is fixedly connected to the inner wall of the movable chamber, a friction plate is vertically slidably connected to the inner wall of the installation bin, the friction plate comprises two groups symmetrically arranged on both sides of the installation bin, and the opposite surfaces of the two groups of friction plates have inclined surfaces formed by machining, and trapezoidal blocks are fitted on the inclined surfaces, the outer wall of the trapezoidal block is slidably connected to the inner wall of the installation bin, and inclined inclined grooves are provided on the outer walls of the two sides of the trapezoidal block, and a trigger plate is slidably provided in the inner wall of the inclined groove through a sliding pin, the middle part of the trigger plate is rotatably connected to the inner wall of the installation bin, and a trigger member is horizontally provided at the front end of the trigger plate; A return spring is fixedly connected to the rear end of the trapezoidal block, and the end of the return spring is fixedly connected to the inner wall of the installation bin.

[0015] Preferably, the trigger member includes a sliding groove, the sliding groove is opened at the top of the mounting plate, and both sides of the sliding groove are fixedly connected with elastic sheets, an adjusting plate is slidably connected in the inner wall of the sliding groove, and the bottom end of the adjusting plate is hinged with a lower top plate, the bottom end of the lower top plate is hinged with a receiving seat, and the outer wall of the receiving seat is slidably connected to the transmission plate, the top of the adjusting plate is fixedly connected with a limiting seat, the inner wall of the limiting seat is slidably connected with a pressing plate, and the axis of the pressing plate is fixedly connected to the bottom wall of the limiting seat through a spring, and both sides of the pressing plate are fixedly connected with raised plates, a limiting groove is horizontally arranged below the raised plate, and the limiting groove is opened at the bottom end of the limiting seat, and the width of the limiting groove matches the width of the elastic sheet; A through slot is provided on the outer wall of the adjustment plate, and an L-shaped lever is rotatably connected to the inner wall of the through slot. The outer wall of the lever is rotatably arranged in the through slot through a mounting sleeve, and the lever can slide along the through slot. A telescopic spring rod is fixedly connected to the front end of the lever, and the end of the telescopic spring rod is fitted with the inner wall of the through slot.

[0016] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the main body of the test device is arranged in a constant temperature bath, and the constant temperature bath can maintain a constant temperature in the entire test environment to ensure that the proton exchange membrane test is more accurate. The constant temperature bath can be adjusted to different temperature environments to test the proton exchange membrane under different temperature environments, thereby being able to grasp the air permeability of the proton exchange membrane as a whole, thereby being able to accurately evaluate fuel cells used in different environments.

[0017] In the present invention, it is necessary to use a temperature detection device to detect the temperature of the water bath to ensure that the specified temperature is reached in the water bath. When the temperature of the water bath is detected, through the setting of the adjustment mechanism, the staff only needs to manually hold one group of telescopic rods and pull them to synchronously adjust all the telescopic rods and adjust the temperature measuring head in the horizontal direction, which is convenient for the staff to make quick adjustments and facilitates the use of the device.

[0018] In the present invention, through the setting of the transmission disk, after the transmission disk is pushed down by the trigger member, the lower end of the transmission disk is connected to the transmission gear, and the rotation of the transmission disk can drive all telescopic rods to perform telescopic operations, and the telescopic rods can be extended and adjusted synchronously, and the temperature measuring head can be adjusted forward and backward.

[0019] In the present invention, by setting the trigger member, the forward-pushing adjustment plate can quickly release the fit between the friction plate and the inner gear ring and the inner gear ring, and the position of the telescopic rod can be adjusted at this time, and the backward-pushing adjustment plate can trigger the transmission plate to move downward. At the same time, the L-shaped lever is used to trigger the transmission plate to drive the telescopic rod to extend and retract, which is convenient for the staff to operate quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front cross-sectional schematic diagram of the present invention; Figure 2 Schematic diagram of the overall assembly three-dimensional structure of the temperature detection device Figure 1 ; Figure 3 Schematic diagram of the overall assembly three-dimensional structure of the temperature detection device Figure 2 ; Figure 4 It is a schematic diagram of the three-dimensional structure of the mounting plate of the temperature detection device; Figure 5 It is a schematic diagram of the cross-sectional structure of the mounting plate of the temperature detection device; Figure 6 It is a schematic diagram of the position structure of the adjustment plate of the temperature detection device; Figure 7 For the present invention Figure 6 The enlarged structural diagram at A in the middle; Figure 8 For the present invention Figure 6 The enlarged structural diagram at B in the middle; Fig. 9 The cross-sectional structure diagram of the adjustment mechanism of the present invention is shown in FIG. Figure 1 ; Fig.10 The cross-sectional structure diagram of the adjustment mechanism of the present invention is shown in FIG. Figure 2 ; Fig.11 It is a schematic diagram of the cross-sectional structure of the telescopic rod of the present invention; Fig.12 For the present invention Fig.11The enlarged structural diagram at C in the middle; Fig.13 It is a schematic diagram of the cross-sectional structure of the shift lever of the present invention.

[0021] In the figure: 1, support seat; 2, support rod; 3, mounting plate; 4, adjustment mechanism; 41, movable cavity; 42, half gear ring; 43, telescopic rod; 431, rotating cavity; 432, inner cylinder; 433, temperature measuring head; 434, rotating rod; 44, first driven wheel; 45, inner gear ring; 46, inner gear ring; 47, rotating ring; 48, transmission plate; 49, second driven wheel; 5, telescopic mechanism; 51, operating chamber; 52, transmission gear; 53, arc plate; 54, push plate; 55, extrusion plate; 56, push plate; 57, push plate; 58, push plate; 59, push plate; 60, push plate; 61, push plate; 62, push plate; 63, push plate; 64, push plate; 65, push plate; 66, push plate; 67, push plate; 68, push plate; 69, push plate; 70, push plate; 71, push plate; 72, push plate; 73, push plate; 74, push plate; 75, push plate; 76, push plate; 77, push plate; 78, push plate; 79, push plate; 80, push plate; 81, push plate; 82, push plate; 83, push plate; 84, push plate; 85, push plate; 86, push plate; 87, push plate; 88, push plate; 89, push plate; 90, push plate; 91, push plate; 92, push plate; 93, push plate; 94, push plate; 95, push plate; 96, push plate; 97, push plate; 98, push plate; 99, push plate; 100, push plate 6. Mounting compartment; 57. Friction plate; 58. Trapezoidal block; 59. Trigger plate; 510. Trigger member; 5101. Sliding groove; 5102. Elastic sheet; 5103. Adjustment plate; 5104. Lower top plate; 5105. Receiver; 5106. Limiting seat; 5107. Pressing plate; 5108. Raised plate; 5109. Through groove; 5110. Push rod; 5111. Telescopic spring rod; 6. Data collector; 7. Constant temperature bath; 701. Constant temperature chamber; 8. Test device body; 9. Bracket. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figures 1 to 13 The present invention provides a technical solution: a proton exchange membrane permeability testing device, comprising a constant temperature bath 7 and a testing device body 8 and a temperature detection device arranged in the constant temperature bath 7. A bracket 9 is fixedly installed at the bottom of a constant temperature chamber 701 of the constant temperature bath 7. The testing device body 8 is arranged on the upper side of the bracket 9, so that the testing device body 8 is spaced apart from the inner wall of the constant temperature chamber 701.

[0024] In this embodiment, the constant temperature bath 7 is a liquid bath, and a heat pump unit and an electric heating tube are arranged in the constant temperature bath 7. The electric heating tube and the evaporator of the heat pump unit are arranged in the constant temperature chamber 701. The electric heating tube can heat the medium in the constant temperature chamber 701, and the evaporator can cool the medium in the constant temperature chamber 701, so that the test device body 8 can be in an environment of different temperatures.

[0025] An upper chamber and a lower chamber are provided in the test device body 8, and a detachable sealed connection is formed between the upper chamber and the lower chamber. The proton exchange membrane to be tested is clamped between the upper chamber and the lower chamber. The upper chamber is connected to a test gas input pipe, and the lower chamber is connected to a carrier gas input pipe.

[0026] The specific testing device body 8 may adopt the proton exchange membrane fuel cell membrane electrode assembly air permeability testing device disclosed in utility model CN203287295U.

[0027] The temperature detection device comprises a support base 1, a support rod 2 is fixedly connected to the top of the support base 1, a mounting plate 3 is slidably connected to the outer wall of the support rod 2, an adjustment mechanism 4 is arranged on the mounting plate 3, a telescopic mechanism 5 is arranged in the inner cavity of the mounting plate 3, and a data collector 6 is fixedly connected to the top of the support rod 2. The support rod 2 is installed in the water bath tank through the support base 1.

[0028] The adjustment mechanism 4 includes an active cavity 41, which is opened in the inner wall of the mounting plate 3. A half gear ring 42 is rotatably connected to the bottom wall of the active cavity 41, and a telescopic rod 43 is fixedly connected to the side of the half gear ring 42. A first driven wheel 44 is meshed with the inner side of the half gear ring 42, and an inner gear ring 45 is meshed with the other side of the first driven wheel 44. An inner gear ring 46 is slidably connected to the top of the inner gear ring 45, and the top of the inner gear ring 46 is rotatably connected to the inner wall of the active cavity 41, and a telescopic rod 43 with the same structure is fixedly connected to one side of the inner gear ring 46.

[0029] In this embodiment, Figure 2 , Figure 4 , Fig. 9 and Fig.10 As shown, the adjustment mechanism 4 also includes a rotating ring 47, the outer wall of the rotating ring 47 is rotatably connected to the inner wall of the active cavity 41, a transmission disk 48 is fitted in the inner wall of the rotating ring 47, a second driven wheel 49 is meshed in the inner wall of the transmission disk 48, and the axial end of the second driven wheel 49 extends downward and is rotatably connected to the bottom wall of the active cavity 41, and two groups of second driven wheels 49 are arranged at intervals along the axial direction of the transmission disk 48, and the two groups of second driven wheels 49 are respectively meshed with the inner wall of the transmission disk 48 and the first driven wheel 44.

[0030] A circle of rubber layer is fixedly connected to the outer wall of the transmission disk 48, and the outer wall of the rubber layer is tightly fitted with the inner wall of the rotating ring 47. Due to the setting of the rubber layer, in the initial state of the transmission disk 48, the transmission disk 48 is tightly fitted with the inner wall of the rotating ring 47, so that when the transmission disk 48 rotates, it can drive the rotating ring 47 to rotate, and then the positions of all temperature measuring heads 433 can be synchronously adjusted.

[0031] In this embodiment, Fig. 9 and Fig.10As shown, telescopic rods 43 with the same structure are fixedly connected to the half gear ring 42, the inner gear ring 45, the inner gear ring 46 and the rotating ring 47, and a plurality of telescopic rods 43 are arranged in a circular array with equal spacing. Through the arrangement of the half gear ring 42, the inner gear ring 45, the inner gear ring 46 and the rotating ring 47, it is convenient for the staff to synchronously adjust the horizontal position of the telescopic rods 43, thereby facilitating the adjustment of the temperature measuring head 433.

[0032] In this embodiment, Figure 2 , Figure 4 , Fig.11 and Fig.12 As shown, the telescopic mechanism 5 includes an operating compartment 51, which is opened at the rear end of the telescopic rod 43. A transmission gear 52 is rotatably connected in the operating compartment 51. Two groups of arc plates 53 are symmetrically arranged on both sides of the rotating shaft of the transmission gear 52. The bottoms of the two groups of arc plates 53 are hinged, and the two groups of arc plates 53 are connected with torsion springs, so that the two groups of arc plates 53 move inward and lock the transmission gear 52 through the rotating shaft, and push plates 54 are hinged on the outer walls of the two groups of arc plates 53. The tops of the two groups of push plates 54 are hinged with the same extrusion plate 55, and a reset spring is sleeved on the outer wall of the extrusion plate 55. Through the arrangement of the arc plates 53, when the transmission disk 48 moves downward, the arc plates 53 can be triggered to unfold, so that the arc plates 53 release the lock on the shaft end of the transmission gear 52, and the telescopic adjustment of the telescopic rod 43 can be performed.

[0033] In this embodiment, Fig.11 and Fig.12 As shown, the telescopic rod 43 includes a rotating cavity 431, which is opened in the inner wall of the telescopic rod 43. The inner wall of the telescopic rod 43 is threadedly connected with an inner cylinder 432, and the front end of the inner cylinder 432 is fixedly connected with a temperature measuring head 433. A rotating rod 434 is slidably connected to the inner wall of the inner cylinder 432 through a spline, and the rear end of the rotating rod 434 is fixedly connected to the transmission gear 52. Through the arrangement of the transmission gears 52 on the telescopic rods 43, when the transmission disk 48 rotates, the rotating rod 434 in the telescopic rod 43 can be synchronously driven to rotate, and the rotating rod 434 drives the inner cylinder 432 to rotate. By utilizing the threaded connection arrangement, the inner cylinder 432 moves forward, driving the temperature measuring head 433 to move.

[0034] In this embodiment, Figure 3 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, the telescopic mechanism 5 also includes a mounting bin 56, the outer wall of the mounting bin 56 is fixedly connected to the inner wall of the movable chamber 41, a friction plate 57 is vertically slidably connected in the inner wall of the mounting bin 56, and the friction plate 57 has two groups symmetrically arranged on both sides of the mounting bin 56, and the opposite surfaces of the two groups of friction plates 57 have inclined surfaces formed by machining, and trapezoidal blocks 58 are fitted on the inclined surfaces, the outer wall of the trapezoidal blocks 58 is slidably connected to the inner wall of the mounting bin 56, and inclined inclined grooves are opened on the outer walls of the two sides of the trapezoidal blocks 58, and a trigger plate 59 is slidably arranged in the inner wall of the inclined groove through a sliding pin, the middle part of the trigger plate 59 is rotatably connected to the inner wall of the mounting bin 56, and a trigger member 510 is horizontally arranged at the front end of the trigger plate 59.

[0035] A return spring is fixedly connected to the rear end of the trapezoidal block 58, and the end of the return spring is fixedly connected to the inner wall of the mounting bin 56. Through the arrangement of two groups of friction plates 57, when the friction plates 57 are in the initial state, the friction plates 57 are in the expanded state, and the upper and lower groups of friction plates 57 are tightly fitted with the inner gear ring 46 and the inner gear ring 45 respectively, so as to lock the adjustment mechanism 4.

[0036] In this embodiment, Figure 4 , Figure 6 , Figure 7 and Figure 8 As shown, the trigger member 510 includes a sliding groove 5101, the sliding groove 5101 is opened at the top of the mounting plate 3, and elastic sheets 5102 are fixedly connected to both sides of the sliding groove 5101, an adjustment plate 5103 is slidably connected in the inner wall of the sliding groove 5101, and a lower top plate 5104 is hinged at the bottom end of the adjustment plate 5103, and a receiving seat 5105 is hinged at the bottom end of the lower top plate 5104, and the outer wall of the receiving seat 5105 is slidably connected to the top wall of the transmission plate 48, and the adjustment plate 5103 is hinged at the bottom end of the adjustment plate 5103. The top of the section plate 5103 is fixedly connected to a limiting seat 5106, the inner wall of the limiting seat 5106 is slidably connected to a pressing plate 5107, and the pressing plate 5107 is fixedly connected to the bottom wall of the limiting seat 5106 via a spring, and both sides of the pressing plate 5107 are fixedly connected to protruding plates 5108, a limiting groove is horizontally arranged below the protruding plate 5108, and the limiting groove is opened at the bottom end of the limiting seat 5106, and the width of the limiting groove matches the width of the elastic sheet 5102.

[0037] A through slot 5109 is provided on the outer wall of the adjusting plate 5103, and an L-shaped lever 5110 is rotatably connected to the inner wall of the through slot 5109. The outer wall of the lever 5110 is rotatably arranged in the through slot 5109 through a mounting sleeve, and the lever 5110 can slide along the through slot 5109. A telescopic spring rod 5111 is fixedly connected to the front end of the lever 5110, and the end of the telescopic spring rod 5111 is arranged to fit the inner wall of the through slot 5109. Through the setting of the adjusting plate 5103, the adjusting plate 5103 can be moved back and forth to release and lock the adjusting mechanism 4 and the telescopic mechanism 5, so that the staff can operate quickly.

[0038] The method of using the temperature test device is as follows: Before using the equipment, the temperature of the water bath is detected by a temperature detection device to ensure that the specified temperature is reached in the water bath. The staff puts their fingers on the adjustment plates 5103 on both sides of the mounting plate 3 and moves them inwards relative to each other, driving the adjustment plates 5103 to move toward the direction of the support rod 2. At this time, the limiting seat 5106 on the adjustment plate 5103 moves synchronously and squeezes the elastic sheet 5102 in front, causing the elastic sheet 5102 to deform downward and enter the limiting groove at the bottom of the limiting seat 5106. At this time, the elastic sheet 5102 is reset again to fix the adjustment plate 5103. At the same time, when the adjustment plate 5103 moves forward, the front end of the adjustment plate 5103 contacts the trigger plate 59, pushing the trigger plate 59 to rotate backward. Since the middle part of the trigger plate 59 is rotatably connected to the inner wall of the installation chamber 56, the lower end of the trigger plate 59 moves forward, and the sliding pin moves upward relative to the installation chamber 56, and cooperates with the action of the inclined groove to make the trapezoidal block 58 move backward. At this time, the two groups of friction plates 57 lose the extrusion of the trapezoidal block 58 and reset, so that the friction plate 57 is released from the fit with the inner gear ring 46 and the inner gear ring 45; the trapezoidal block 58 and the installation chamber 56 are guided by two telescopic rods 43, so that the trapezoidal block 58 can only move forward and backward in a straight line; Then the staff manually pulls any telescopic rod 43, so that the telescopic rod 43 drives the half gear ring 42 to rotate, and the half gear ring 42 drives the inner gear ring 45 to rotate in the opposite direction through the first driven wheel 44, so that the positions of the two sets of telescopic rods 43 can be adjusted synchronously at this time, and then with the rotation of the first driven wheel 44, the first driven wheel 44 drives the second driven wheel 49 to rotate. Since the second driven wheel 49 is provided with two sets, the power is transmitted to the upper transmission plate 48 through the second driven wheel 49; When the transmission disc 48 is tightly fitted with the inner wall of the rotating ring 47, the transmission disc 48 can drive the rotating ring 47 to rotate synchronously through friction, driving the telescopic rod 43 on one side thereof to rotate, and at the same time, the other side of the second driven wheel 49 is meshed with an inner gear ring 46, so that the rotation direction of the inner gear ring 46 is opposite to that of the rotating ring 47, thereby adjusting the position of another group of telescopic rods 43, thereby synchronously adjusting the position of the temperature measuring head 433; Then the staff manually presses down the pressing plate 5107 on the adjusting plate 5103, and the pressing plate 5107 squeezes the spring, pushing the raised plate 5108 to move toward the limiting groove, squeezing the elastic sheet 5102 to contract again, and the elastic sheet 5102 moves out of the limiting groove, releasing the restriction on the limiting seat 5106, and pushing the limiting seat 5106 backward, so that the limiting seat 5106 moves to the position of another set of elastic sheets 5102 and is limited. At the same time, when the adjusting plate 5103 moves, The receiving seat 5105 is pushed by the lower top plate 5104. Since the receiving seat 5105 is slidably connected to the transmission disc 48, the entire transmission disc 48 is moved out of the rotating ring 47, and the bottom end of the transmission disc 48 is meshed with the transmission gear 52. At the same time, the bottom end of the transmission disc 48 presses down the extrusion plate 55, and the extrusion plate 55 moves downward to push the two sets of arc plates 53 to unfold, thereby unlocking the shaft end of the transmission gear 52; the bottom end of the transmission disc 48 and the transmission gear 52 can be meshed in a bevel gear manner; At this time, the staff can manually pull the telescopic spring rod 5111 to shrink it, and turn the lever 5110 to flip ninety degrees. Since the lever 5110 is an L-shaped structure, the protruding end of the lever 5110 is connected to the inner wall tooth groove of the transmission disk 48. At this time, the lever 5110 is rotated, and the lever 5110 can continuously drive the transmission disk 48 to rotate. The transmission disk 48 synchronously drives the transmission gears 52 in the telescopic rods 43 to rotate, and the transmission gear 52 drives the inner cylinder 432 to rotate through the rotating rod 434. Since the inner cylinder 432 is threadedly connected with the rotating chamber 431, the inner cylinder 432 can be telescopically moved, thereby synchronously realizing the change of the positions of the several temperature measuring heads 433. Finally, after the adjustment is completed, the entire equipment is placed in the container for temperature detection.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. Proton exchange membrane permeability testing device, characterized in that: The invention comprises a thermostatic bath (7), a test device body (8) and a temperature detection device arranged in the thermostatic bath (7), wherein a bracket (9) is fixedly mounted on the bottom of a thermostatic chamber (701) of the thermostatic bath (7), and the test device body (8) is arranged on the upper side of the bracket (9) so that the test device body (8) is spaced apart from the inner wall of the thermostatic chamber (701).

2. The proton exchange membrane permeability testing device according to claim 1, characterized in that: The testing device body (8) is provided with an upper chamber and a lower chamber, the upper chamber and the lower chamber are detachably sealed and connected, the proton exchange membrane to be tested is clamped between the upper chamber and the lower chamber, the upper chamber is connected to a test gas input pipe, and the lower chamber is connected to a carrier gas input pipe.

3. The proton exchange membrane permeability testing device according to claim 1, characterized in that: The temperature detection device comprises a support seat (1), the top end of the support seat (1) is fixedly connected to a support rod (2), the outer wall of the support rod (2) is slidably connected to a mounting plate (3), the inner wall of the mounting plate (3) is provided with an adjustment mechanism (4), the inner cavity of the mounting plate (3) is provided with a telescopic mechanism (5), and the top end of the support rod (2) is fixedly connected to a data collector (6); The adjustment mechanism (4) comprises an active cavity (41), wherein the active cavity (41) is formed in the inner wall of the mounting plate (3), a half gear ring (42) is rotatably connected to the bottom wall of the active cavity (41), a telescopic rod (43) is fixedly connected to the side of the half gear ring (42), a first driven wheel (44) is meshingly provided on the inner wall of the half gear ring (42), and an inner gear ring (45) is meshingly provided at the other end of the first driven wheel (44), an inner gear ring (46) is slidably connected to the top end of the inner gear ring (45), and the top end of the inner gear ring (46) is rotatably connected to the inner wall of the active cavity (41), and a telescopic rod (43) having the same structure is fixedly connected to one side of the inner gear ring (46).

4. The proton exchange membrane permeability testing device according to claim 3, characterized in that: The adjustment mechanism (4) further comprises a rotating ring (47), the outer wall of the rotating ring (47) being rotatably connected to the inner wall of the movable cavity (41), a transmission disc (48) being fitted in the inner wall of the rotating ring (47), a second driven wheel (49) being meshed in the inner wall of the transmission disc (48), and an axial end of the second driven wheel (49) extending downwardly to be rotatably connected to the bottom wall of the movable cavity (41), and two groups of the second driven wheels (49) being spaced apart along the axial direction of the transmission disc (48), the two groups of the second driven wheels (49) being meshed with the inner wall of the transmission disc (48) and the first driven wheel (44) respectively; A rubber layer is fixedly connected to the outer wall of the transmission disc (48), and the outer wall of the rubber layer is tightly fitted to the inner wall of the rotating ring (47).

5. The proton exchange membrane permeability testing device according to claim 4, characterized in that: Telescopic rods (43) with the same structure are fixedly connected to the half gear ring (42), the inner gear ring (45), the inner gear ring (46) and the rotating ring (47), and a plurality of telescopic rods (43) are arranged in a circular array at equal intervals.

6. The proton exchange membrane permeability testing device according to claim 4, characterized in that: The telescopic mechanism (5) comprises an operating chamber (51), the operating chamber (51) being disposed at the rear end of the telescopic rod (43), a transmission gear (52) being rotatably connected in the inner wall of the operating chamber (51), two groups of arc plates (53) being symmetrically arranged on both sides of the rotating shaft of the transmission gear (52), the bottoms of the two groups of arc plates (53) being hinged, and the two groups of arc plates (53) being connected to torsion springs so that the two groups of arc plates (53) move inward and lock the transmission gear (52) through the rotating shaft, and push plates (54) being hinged on the outer walls of the two groups of arc plates (53), the top ends of the two groups of push plates (54) being hinged to the same extrusion plate (55), and the outer walls of the extrusion plates (55) being sleeved with a return spring.

7. The proton exchange membrane permeability testing device according to claim 6, characterized in that: The telescopic rod (43) comprises a rotating cavity (431), the rotating cavity (431) being formed in the inner wall of the telescopic rod (43), the inner wall of the telescopic rod (43) being threadedly connected to an inner cylinder (432), the front end of the inner cylinder (432) being fixedly connected to a temperature measuring head (433), the inner wall of the inner cylinder (432) being slidably connected to a rotating rod (434) via a spline, and the rear end of the rotating rod (434) being fixedly connected to a transmission gear (52).

8. The proton exchange membrane permeability testing device according to claim 7, characterized in that: The telescopic mechanism (5) further comprises a mounting bin (56), the outer wall of the mounting bin (56) being fixedly connected to the inner wall of the movable chamber (41), a friction plate (57) being vertically slidably connected to the inner wall of the mounting bin (56), the friction plate (57) comprising two groups symmetrically arranged on both sides of the mounting bin (56), the opposite surfaces of the two groups of friction plates (57) both having inclined surfaces formed by machining, and trapezoidal blocks (58) being fitted on the inclined surfaces, the outer wall of the trapezoidal blocks (58) being slidably connected to the inner wall of the mounting bin (56), the outer walls of both sides of the trapezoidal blocks (58) both having inclined inclined grooves, and a trigger plate (59) being slidably arranged in the inner wall of the inclined groove via a sliding pin, the middle portion of the trigger plate (59) being rotatably connected to the inner wall of the mounting bin (56), and a trigger member (510) being horizontally arranged at the front end of the trigger plate (59); A return spring is fixedly connected to the rear end of the trapezoidal block (58), and the end of the return spring is fixedly connected to the inner wall of the installation chamber (56).

9. The proton exchange membrane permeability testing device according to claim 8, characterized in that: The trigger member (510) comprises a sliding groove (5101), wherein the sliding groove (5101) is provided at the top of the mounting plate (3), and elastic sheets (5102) are fixedly connected to both sides of the sliding groove (5101), an adjustment plate (5103) is slidably connected to the inner wall of the sliding groove (5101), and a lower top plate (5104) is hingedly connected to the bottom end of the adjustment plate (5103), a receiving seat (5105) is hingedly connected to the bottom end of the lower top plate (5104), and an outer wall of the receiving seat (5105) is slidably connected to the transmission plate (48), and the adjustment plate (5103) is hingedly connected to the bottom end of the adjustment plate (5103). The top of the plate (5103) is fixedly connected to a limiting seat (5106), a pressing plate (5107) is slidably connected to the inner wall of the limiting seat (5106), and the axis of the pressing plate (5107) is fixedly connected to the bottom wall of the limiting seat (5106) through a spring, and both sides of the pressing plate (5107) are fixedly connected to a raised plate (5108), a limiting groove is horizontally arranged below the raised plate (5108), and the limiting groove is opened at the bottom end of the limiting seat (5106), and the width of the limiting groove matches the width of the elastic sheet (5102); A through slot (5109) is provided on the outer wall of the adjustment plate (5103), and an L-shaped lever (5110) is rotatably connected to the inner wall of the through slot (5109); the outer wall of the lever (5110) is rotatably arranged in the through slot (5109) via a mounting sleeve, and the lever (5110) can slide along the through slot (5109); a telescopic spring rod (5111) is fixedly connected to the front end of the lever (5110), and the end of the telescopic spring rod (5111) is arranged to fit the inner wall of the through slot (5109).

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