Testing equipment for detecting air tightness of diaphragm for water electrolysis hydrogen production
By designing a test equipment for detecting the airtightness of the diaphragm for hydroelectric hydrogen production, the damage and pore problems that may be caused by the diaphragm during processing are solved, and efficient airtightness detection is achieved, reducing the workload and improving the detection accuracy.
Patent Information
- Application Number
- CN202421258152.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-06-04
AI Technical Summary
The diaphragm for hydrogen production by water electrolysis may cause damage to the diaphragm during processing, resulting in difficult to detect small pores and breathability problems. It needs to be disassembled and replaced, and the workload needs to be increased.
A test equipment is designed for detecting the airtightness of the diaphragm for electrolytic hydrogen production, including a workbench, a lower cylinder, an upper cylinder, an air compressor, an air injection pipeline, a pressure measuring pipeline and a U-shaped pressure gauge. By fixing the diaphragm and injecting water and air, observe whether bubbles appear in the water, and read the reading of the U-shaped pressure gauge to detect the airtightness.
This device can effectively detect the airtightness of the diaphragm, avoid diaphragm replacement due to small pores or air permeability problems, reduce workload, and improve detection accuracy by digitizing the airtightness data.
Smart Images
Figure CN222882217U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of air tightness testing, in particular to a testing device for detecting the air tightness of a diaphragm used for producing hydrogen by water electrolysis. Background Art
[0002] Diaphragm cloth is the main core material of the water electrolyzer in the water electrolysis hydrogen production technology. It is placed between the anode and cathode of the water electrolyzer to prevent the mixing of the anode side gas and the cathode side gas.
[0003] However, the diaphragm used for hydrogen production by water electrolysis may be damaged during the processing. Some very small pores and air permeability problems are difficult to detect with the naked eye. When the diaphragm has airtightness problems, it needs to be disassembled and replaced, which increases the workload. Utility Model Content
[0004] The purpose of the utility model is to provide a testing device for detecting the air tightness of a diaphragm used for hydrogen production by water electrolysis, aiming to solve the technical problem that the diaphragm used for hydrogen production by water electrolysis may be damaged during the processing, some very small pores and air permeability problems are difficult to be found with the naked eye, and when the diaphragm has an air tightness problem, it needs to be disassembled and replaced again, resulting in an increased workload.
[0005] To achieve the above-mentioned purpose, the utility model provides a testing device for detecting the air tightness of a diaphragm for water electrolysis hydrogen production, comprising a workbench, a lower cylinder, an upper cylinder, an air compressor, an air injection pipeline, a pressure measuring pipeline and a U-shaped pressure gauge, wherein the lower cylinder is fixedly arranged at the center of the upper surface of the workbench, the top end of the lower cylinder is arranged in an open structure, a first porous plate is arranged inside the top end of the lower cylinder, a lower flange is arranged outside the top end of the lower cylinder, the upper cylinder is arranged above the lower cylinder, a second porous net is arranged inside the bottom end of the upper cylinder, an upper flange is arranged outside the bottom end of the upper cylinder, and the upper flange is fixed to the lower flange by a plurality of fixing members;
[0006] The air compressor and the U-shaped pressure gauge are respectively arranged on both sides of the workbench, an air inlet and an air outlet are respectively arranged on both sides of the lower cylinder, the air injection pipeline is arranged between the output end of the air compressor and the air inlet, and the pressure measuring pipeline is arranged between the input end of the U-shaped pressure gauge and the air outlet.
[0007] Wherein, each of the fixing members comprises a threaded rod and a rotating ring, the upper flange and the lower flange are both threadedly connected to the threaded rod, and the rotating ring is fixedly arranged at the top end of the threaded rod.
[0008] Among them, a pressure reducing valve is provided on the gas injection pipeline, and a rotor flowmeter is installed on the side of the pressure reducing valve. A first bracket is also provided on the upper surface of the workbench, and the first bracket is used to support the pressure reducing valve. An electronic pressure gauge is provided on the pressure measuring pipeline, and a second bracket is also provided on the upper surface of the workbench, and the second bracket is used to support the electronic pressure gauge. A third bracket is also provided on one side of the workbench, and the third bracket is used to support the U-shaped pressure gauge.
[0009] Wherein, a containing cavity is arranged inside the workbench, opening and closing doors are arranged on both sides of the containing cavity, and each of the opening and closing doors is provided with a handle.
[0010] Among them, the testing equipment for detecting the air tightness of the diaphragm used for water electrolysis to produce hydrogen also includes a placement frame, movable wheels are arranged at the four bottom corners of the workbench, the placement frame is arranged at one end of the workbench close to the third bracket, the placement frame is used to place the third bracket, and a pushing handle is arranged at one end of the workbench away from the third bracket.
[0011] Wherein, fixed wing plates are arranged on both sides of one side of the placing frame close to the workbench, and the fixed wing plates are detachably connected to the outer side walls of the workbench.
[0012] The utility model discloses a testing device for detecting the air tightness of a diaphragm used for producing hydrogen by water electrolysis. After placing the diaphragm to be detected above the first porous plate, the upper cylinder is placed on the upper end of the lower cylinder, and the upper flange is fixed to the lower flange by the fixing member so that the diaphragm to be detected is fixed between the first porous plate and the second porous plate, a certain amount of water is injected into the interior of the upper cylinder, air is injected into the interior of the lower cylinder through the air compressor and the air injection pipeline, the interior of the upper cylinder is observed, and when the first bubble is observed to appear in the water in the upper cylinder, the reading of the U-type pressure gauge at this time is read, and when no bubble appears in the water in the upper cylinder and the reading of the U-type pressure gauge is stable, the pressure value at this time is recorded, thereby completing the test of the air tightness of the diaphragm. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0014] Figure 1It is a structural schematic diagram of a testing device for detecting the air tightness of a diaphragm for hydrogen production by water electrolysis according to the first embodiment of the utility model.
[0015] Figure 2 It is a schematic diagram of the split structure of the lower cylinder and the upper cylinder in the first embodiment of the utility model.
[0016] Figure 3 It is a structural schematic diagram of a testing device for detecting the air tightness of a diaphragm for producing hydrogen by water electrolysis according to the second embodiment of the utility model.
[0017] Figure 4 The utility model provides Figure 3 A magnified view of the local structure at A.
[0018] 101-workbench, 102-lower cylinder, 103-upper cylinder, 104-air compressor, 105-gas injection pipeline, 106-pressure measuring pipeline, 107-U-type pressure gauge, 108-first porous plate, 109-lower flange, 110-second porous mesh, 111-upper flange, 112-fixing part, 113-air inlet, 114-air outlet, 115-threaded rod, 116-rotating ring, 117-pressure reducing valve, 118-rotor flowmeter, 119-first bracket, 120-electronic pressure gauge, 121-second bracket, 122-accommodating chamber, 123-opening and closing door, 124-handle, 125-third bracket, 201-placing frame, 202-moving wheel, 203-pushing handle, 204-fixed wing plate. DETAILED DESCRIPTION
[0019] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.
[0020] First embodiment:
[0021] See also Figure 1 and Figure 2 ,in Figure 1 is a schematic structural diagram of a testing device for detecting the air tightness of a diaphragm for hydrogen production by water electrolysis according to a first embodiment, Figure 2 It is a schematic diagram of the split structure of the lower cylinder and the upper cylinder in the first embodiment.
[0022] The utility model provides a testing device for detecting the air tightness of a diaphragm for water electrolysis hydrogen production: comprising a workbench 101, a lower cylinder 102, an upper cylinder 103, an air compressor 104, an air injection pipeline 105, a pressure measuring pipeline 106 and a U-type pressure gauge 107. The above-mentioned solution solves the problem that the diaphragm for water electrolysis hydrogen production may be damaged during the processing process, and it is difficult to find some very small pores and air permeability problems with the naked eye. When the diaphragm has an air tightness problem, it needs to be disassembled and replaced again, resulting in an increase in workload. It can be understood that the above-mentioned solution can be used in the structure of the air tightness detection device of the diaphragm for water electrolysis hydrogen production.
[0023] According to this specific embodiment, the lower cylinder 102 is fixedly arranged at the center of the upper surface of the workbench 101, the top of the lower cylinder 102 is arranged in an open structure, the top of the lower cylinder 102 is provided with a first porous plate 108 inside, the top of the lower cylinder 102 is provided with a lower flange 109 outside, the upper cylinder 103 is arranged above the lower cylinder 102, the inner side of the bottom of the upper cylinder 103 is provided with a second porous net 110, and the upper An upper flange 111 is provided on the outer side of the bottom of the cylinder 103, and the upper flange 111 is fixed to the lower flange 109 by a plurality of fixing members 112. The air compressor 104 and the U-shaped pressure gauge 107 are provided on both sides of the workbench 101, respectively. An air inlet 113 and an air outlet 114 are provided on both sides of the lower cylinder 102, and the air injection pipeline 105 is provided between the output end of the air compressor 104 and the air inlet 113. The U-shaped pressure gauge 107 is provided on both sides of the lower cylinder 102, respectively. The pressure measuring pipe 106 is arranged between the input end of the force gauge 107 and the air outlet 114. After the diaphragm to be tested is placed above the first porous plate 108, the upper cylinder 103 is placed on the upper end of the lower cylinder 102, and the upper flange 111 and the lower flange 109 are fixed by the fixing member 112, so that the diaphragm to be tested is fixed between the first porous plate 108 and the second porous plate, a certain amount of water is injected into the interior of the upper cylinder 103, and air is injected into the interior of the lower cylinder 102 through the air compressor 104 and the air injection pipe 105, and the upper cylinder 103 is observed. When the first bubble is observed to appear in the water in the upper cylinder 103, the reading of the U-shaped pressure gauge 107 at this time is read. When no bubble appears in the water in the upper cylinder 103 and the reading of the U-shaped pressure gauge 107 is stable, the pressure value at this time is recorded, thereby completing the air tightness test of the diaphragm.
[0024] Among them, each of the fixing parts 112 includes a threaded rod 115 and a rotating ring 116, the upper flange 111 and the lower flange 109 are both threadedly connected to the threaded rod 115, and the rotating ring 116 is fixedly set at the top of the threaded rod 115. After the threaded rod 115 is aligned with the threaded holes of the upper flange 111 and the lower flange 109, the rotating ring 116 is rotated to complete the fixation of the upper flange 111 and the lower flange 109.
[0025] Secondly, a pressure reducing valve 117 is provided on the gas injection pipeline 105, and a rotor flowmeter 118 is installed on the side of the pressure reducing valve 117. A first bracket 119 is also provided on the upper surface of the workbench 101, and the first bracket 119 is used to support the pressure reducing valve 117. An electronic pressure gauge 120 is provided on the pressure measuring pipeline 106, and a second bracket 121 is also provided on the upper surface of the workbench 101, and the second bracket 121 is used to support the electronic pressure gauge 120. A third bracket 125 is also provided on one side of the workbench 101, and the third bracket 125 is used to support the U-type pressure gauge 107. The intake pressure of the air compressor 104 is controlled by the pressure reducing valve 117, and the gas flow is detected by the setting of the rotor flowmeter 118. The electronic pressure gauge 120 can digitally display the air tightness data and can be compared with the pressure count value of the U-type pressure gauge 107, so that the air tightness detection of the diaphragm is more accurate.
[0026] At the same time, a accommodating cavity 122 is provided inside the workbench 101, and opening and closing doors 123 are provided on both sides of the accommodating cavity 122. Each of the opening and closing doors 123 is provided with a handle 124. When the test equipment is not in use, the handle 124 can be pulled to open the opening and closing door 123, and the air compressor 104 can be placed inside the accommodating cavity 122 to complete the storage of the air compressor 104.
[0027] When using a test device for detecting the air tightness of a diaphragm for hydrogen production by water electrolysis according to the present embodiment, after placing the diaphragm to be detected on top of the first porous plate 108, the upper cylinder 103 is placed on the upper end of the lower cylinder 102, and the upper flange 111 is fixed to the lower flange 109 by the fixing member 112, so that the diaphragm to be detected is fixed between the first porous plate 108 and the second porous plate, a certain amount of water is injected into the interior of the upper cylinder 103, and air is injected into the interior of the lower cylinder 102 through the air compressor 104 and the air injection pipe 105, and the interior of the upper cylinder 103 is observed. When an individual observation When the first bubble appears in the water in the upper cylinder 103, read the reading of the U-type pressure gauge 107 at this time. When no bubble appears in the water in the upper cylinder 103 and the reading of the U-type pressure gauge 107 is stable, record the pressure value at this time to complete the test of the air tightness of the diaphragm, and control the intake pressure of the air compressor 104 through the pressure reducing valve 117. Through the setting of the rotor flowmeter 118, the gas flow is detected. The electronic pressure gauge 120 can digitally display the air tightness data and can be compared with the pressure count value of the U-type pressure gauge 107, so that the detection of the air tightness of the diaphragm is more accurate.
[0028] Second embodiment:
[0029] Based on the first embodiment, please refer to Figure 3 and Figure 4 , Figure 3 This is a schematic diagram of the structure of a testing device for detecting the air tightness of a diaphragm for hydrogen production by water electrolysis according to a second embodiment. Figure 4 for Figure 3 A magnified view of the local structure at A.
[0030] The utility model provides a testing device for detecting the air tightness of a diaphragm used for producing hydrogen by water electrolysis, which also includes a placement frame 201 .
[0031] According to this specific embodiment, moving wheels 202 are provided at the four bottom corners of the workbench 101, and the placement frame 201 is provided at the end of the workbench 101 close to the third bracket 125. The placement frame 201 is used to place the third bracket 125. A pushing handle 203 is provided at the end of the workbench 101 away from the third bracket 125. When transporting the test equipment, the third bracket 125 is placed in the placement frame 201, and the transportation of the entire test equipment is completed by cooperating with the pushing handle 203 and the moving wheels 202.
[0032] Among them, fixed wing panels 204 are provided on both sides of the side of the placement frame 201 close to the workbench 101. The fixed wing panels 204 are detachably connected to the outer wall of the workbench 101, and the fixed wing panels 204 are fixed to the side of the workbench 101 by screws, thereby completing the installation of the placement frame 201.
[0033] When using a test device for detecting the air tightness of a diaphragm for hydrogen production by water electrolysis according to the present embodiment, the fixed wing plate 204 is fixed to the side of the workbench 101 by screws, thereby completing the installation of the placement frame 201. When transporting the test device, the third bracket 125 is placed in the placement frame 201, and the entire test device is transported by cooperating with the push handle 203 and the moving wheel 202.
[0034] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the utility model.
Claims
1. A test device for detecting the air tightness of a diaphragm for hydrogen production by water electrolysis, characterized in that: It comprises a workbench, a lower cylinder, an upper cylinder, an air compressor, an air injection pipeline, a pressure measuring pipeline and a U-shaped pressure gauge, wherein the lower cylinder is fixedly arranged at the center of the upper surface of the workbench, the top end of the lower cylinder is arranged in an open structure, a first porous plate is arranged inside the top end of the lower cylinder, a lower flange is arranged outside the top end of the lower cylinder, the upper cylinder is arranged above the lower cylinder, a second porous net is arranged inside the bottom end of the upper cylinder, an upper flange is arranged outside the bottom end of the upper cylinder, and the upper flange is fixed to the lower flange by a plurality of fixing members; The air compressor and the U-shaped pressure gauge are respectively arranged on both sides of the workbench, an air inlet and an air outlet are respectively arranged on both sides of the lower cylinder, the air injection pipeline is arranged between the output end of the air compressor and the air inlet, and the pressure measuring pipeline is arranged between the input end of the U-shaped pressure gauge and the air outlet; Each of the fixing parts includes a threaded rod and a rotating ring. The upper flange and the lower flange are both threadedly connected to the threaded rod. The rotating ring is fixedly arranged on the top of the threaded rod. A pressure reducing valve is arranged on the gas injection pipeline. A rotor flowmeter is installed on the side of the pressure reducing valve. A first bracket is also arranged on the upper surface of the workbench, and the first bracket is used to support the pressure reducing valve. An electronic pressure gauge is arranged on the pressure measuring pipeline. A second bracket is also arranged on the upper surface of the workbench, and the second bracket is used to support the electronic pressure gauge. A third bracket is also arranged on one side of the workbench, and the third bracket is used to support the U-shaped pressure gauge.
2. The testing device for detecting the air tightness of the diaphragm for hydrogen production by water electrolysis according to claim 1, characterized in that: The workbench is provided with a containing cavity inside, opening and closing doors are provided on both sides of the containing cavity, and each of the opening and closing doors is provided with a handle.
3. The testing device for detecting the air tightness of the diaphragm for hydrogen production by water electrolysis according to claim 1, characterized in that: The testing equipment for detecting the air tightness of the diaphragm for hydrogen production by water electrolysis also includes a placement frame. Moving wheels are arranged at the four bottom corners of the workbench. The placement frame is arranged at one end of the workbench close to the third bracket. The placement frame is used to place the third bracket. A pushing handle is arranged at one end of the workbench away from the third bracket.
4. The testing device for detecting the air tightness of the diaphragm for hydrogen production by water electrolysis according to claim 3, characterized in that: Fixed wing plates are arranged on both sides of one side of the placing frame close to the workbench, and the fixed wing plates are detachably connected to the outer side walls of the workbench.