Low-pressure pipeline structure of hydrogen fuel cell
By setting up clamps and threaded rods in the low-pressure pipeline structure of the hydrogen fuel cell, the external pipe and hydrogen intake pipe are fixed, solving the problem of pipeline gaps or disengagement under low-pressure conditions, ensuring the normal input of hydrogen and the stable operation of the system.
Patent Information
- Application Number
- CN202421265807.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-05
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-06-05
AI Technical Summary
Under low pressure conditions, hydrogen fuel cells are prone to gaps or disengagement due to extrusion, affecting the normal input of hydrogen.
A low-pressure pipeline structure is designed. By setting up two clamps and a threaded rod, the clamps are driven to move simultaneously by the telescopic rod. The clamps completely clamp the connection between the external pipe and the hydrogen intake pipe, and the pipes are connected to prevent gaps or detachment.
It effectively prevents gaps or disengages between the external pipe and the hydrogen intake pipe, ensures the normal input of hydrogen, and improves the working stability of the hydrogen fuel cell.
Smart Images
Figure CN222801825U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydrogen fuel cells, in particular to a low-pressure pipeline structure of a hydrogen fuel cell. Background Art
[0002] A hydrogen fuel cell is a power generation device that directly converts the chemical energy of hydrogen and oxygen into electrical energy. Its basic principle is the reverse reaction of water electrolysis. Hydrogen and oxygen are supplied to the anode and cathode respectively. After hydrogen diffuses outward through the anode and reacts with the electrolyte, it releases electrons and reaches the cathode through an external load.
[0003] When a hydrogen fuel cell is working, a hydrogen storage tank is required to continuously input hydrogen into the anode compartment through an external pipeline. However, the density of hydrogen is much lower than that of air. When the unit amount of hydrogen input is low, the outside world will cause greater squeezing on the hydrogen intake pipeline, which may cause a gap between the intake pipeline and the external pipeline. In severe cases, the intake pipeline and the external pipeline will be separated, affecting the normal input of hydrogen. Utility Model Content
[0004] The utility model proposes a low-pressure pipeline structure for a hydrogen fuel cell to solve the problem that when the unit amount of hydrogen input is low, the outside world will cause a large squeeze on the hydrogen intake pipe, which may cause a gap between the intake pipe and the external pipe, and in severe cases, the intake pipe and the external pipe will be separated, affecting the normal input of hydrogen.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a low-pressure pipeline structure of a hydrogen fuel cell, comprising a cathode bin and an anode bin, wherein the cathode bin and the anode bin are provided with a same diaphragm on the side close to each other, the top and bottom of the cathode bin are respectively fixedly connected with an oxygen inlet pipe and a first outlet pipe, the inner wall of the oxygen inlet pipe is provided with a humidifier, the top and bottom of the anode bin are respectively fixedly connected with a hydrogen inlet pipe and a second outlet pipe, the outer surface of the hydrogen inlet pipe is provided with an external pipeline, the outer surface of the external pipeline is provided with a fixing device, the fixing device comprises two first auxiliary plates, the two first auxiliary plates are arranged on both sides of the external pipeline, the two first auxiliary plates are fixedly connected with a clamping plate on the side close to each other, the cross section of the clamping plate in the vertical direction is half annular, the bottom of the first auxiliary plate is provided with a second auxiliary plate, a disassembly device is provided between the first auxiliary plate and the second auxiliary plate, the two second auxiliary plates are provided with a threaded rod on the side away from each other, the outer surface of the threaded rod is threadedly connected with a fixing block, and one side of the two fixing blocks is symmetrically fixedly connected to the outer surface of the anode bin.
[0006] The effect achieved by the above components is: by setting two clamping plates, under the action of the threaded rod, the threaded rod is rotated, and the threaded rod will be extended and retracted on the inner wall of the fixed block. During the extension and retraction process, the threaded rod will drive the clamping plates connected to the first auxiliary plate and the second auxiliary plate to move synchronously until the two clamping plates completely clamp the connection between the external pipeline and the hydrogen intake pipe, so that the external pipeline and the hydrogen intake pipe can be fixed, which is beneficial to prevent gaps from being generated between the external pipeline and the hydrogen intake pipe or separation from each other, thereby ensuring the normal input of hydrogen.
[0007] Preferably, the ends of the two threaded rods that are away from each other are fixedly connected to an operating block, and the outer surface of the operating block is provided with a protrusion.
[0008] The effect achieved by the above components is: by setting the operating block, rotating the operating block can drive the threaded rod to rotate, and at the same time, the outer surface of the operating block is provided with a protrusion, which can effectively increase the friction force of the outer surface of the operating block, and has an anti-slip effect when rotating the operating block, thereby facilitating the rotation of the threaded rod through the operating block.
[0009] Preferably, the adjacent ends of the two threaded rods are fixedly connected with bearings, and the outer surfaces of the bearings are fixedly connected to the inner wall of the second auxiliary plate.
[0010] The effect achieved by the above components is that by providing the bearing, the friction between the threaded rod and the second auxiliary plate can be reduced when the threaded rod is rotating, making it easier to rotate the threaded rod.
[0011] Preferably, a slide bar is fixedly connected to one side of the anode bin, a slide groove is provided on one side of the second auxiliary plate, and an outer surface of the slide bar is slidably connected to inner walls of two slide grooves.
[0012] The effect achieved by the above components is: by setting the sliding bar and the sliding groove, when the second auxiliary plate moves under the action of the threaded rod, the sliding bar and the sliding groove can limit the second auxiliary plate, thereby making the second auxiliary plate, the first auxiliary plate and the clamping plate more stable during the movement.
[0013] Preferably, a rubber plate is provided on one side of the two clamping plates that are away from each other, and one side of the rubber plate is fixedly connected to one side of the clamping plates.
[0014] The effect achieved by the above components is that by arranging the rubber plate, a certain protective effect can be played on the external pipe when the clamping plate clamps the external pipe.
[0015] Preferably, the easy-to-disassemble device includes a card block, one side of the second auxiliary plate is fixedly connected to one side of the card block, one side of the first auxiliary plate is provided with a card slot, and the outer surface of the card block is inserted into the inner wall of the card slot.
[0016] The effect achieved by the above components is: by setting the card block and the card slot, the card block is inserted into the inner wall of the card slot, and the card slot can limit the card block, so that the first auxiliary plate and the second auxiliary plate can be connected, and it is also convenient to disassemble the splint connected to the first auxiliary plate, so as to facilitate the maintenance and separate replacement of the splint and the rubber plate.
[0017] Preferably, two threaded pins are inserted into the inner wall of the clamping block, one end of the threaded pin is fixedly connected to one side of the inner wall of the clamping slot, a nut is provided on the outer surface of the threaded pin, and the outer surface of the threaded pin is threadedly inserted into the inner wall of the nut.
[0018] The effect achieved by the above-mentioned components is: by setting a threaded pin, inserting two threaded pins into the inner wall of the block, sleeve a nut on one end of the threaded pin, and rotating the nut so that one side of the nut abuts against one side of the block, the threaded pin and the block can be limited, further preventing the block from detaching from the inner wall of the slot.
[0019] Preferably, the outer surfaces of the two threaded pins are sleeved with a same gasket, and the gasket is arranged between the nut and the block.
[0020] The effect achieved by the above components is that by arranging the gasket, one side of the two nuts is replaced by abutting against one side of the block, which is helpful to prevent the nuts from being easily loosened.
[0021] Compared with the prior art, the advantages and positive effects of the utility model are:
[0022] In the utility model, by setting two clamping plates, under the action of the threaded rod, the threaded rod can drive the clamping plates connected to the first auxiliary plate and the second auxiliary plate to move synchronously until the two clamping plates completely clamp the connection between the external pipeline and the hydrogen intake pipe, so that the external pipeline and the hydrogen intake pipe can be fixed, which is beneficial to prevent the generation of gaps between the external pipeline and the hydrogen intake pipe or prevent the mutual separation, thereby ensuring the normal input of hydrogen. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a three-dimensional structural schematic diagram of the main body of the utility model;
[0024] Figure 2 This is a three-dimensional structural schematic diagram of the anode bin of the utility model;
[0025] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure at point A;
[0026] Figure 4 For this utility model Figure 2 Schematic diagram of the enlarged structure at B.
[0027] Legend: 1. Cathode compartment; 2. Anode compartment; 3. Diaphragm; 4. Oxygen inlet pipe; 5. First outlet pipe; 6. Humidifier; 7. Fixing device; 71. First auxiliary plate; 72. Clamp; 73. Second auxiliary plate; 74. Threaded rod; 75. Fixing block; 76. Operating block; 77. Bearing; 78. Slide bar; 79. Slide groove; 710. Rubber sheet; 8. Disassembly device; 81. Block; 82. Slot; 83. Threaded pin; 84. Nut; 85. Gasket; 9. Hydrogen inlet pipe; 10. External pipeline; 11. Second outlet pipe. DETAILED DESCRIPTION
[0028] Example 1, reference Figure 1-Figure 3 As shown, the present embodiment discloses a low-pressure pipeline structure of a hydrogen fuel cell, comprising a cathode compartment 1 and an anode compartment 2, wherein the same diaphragm 3 is arranged on the side where the cathode compartment 1 and the anode compartment 2 are close to each other, the top and bottom of the cathode compartment 1 are respectively fixedly connected with an oxygen inlet pipe 4 and a first outlet pipe 5, the inner wall of the oxygen inlet pipe 4 is provided with a humidifier 6, the top and bottom of the anode compartment 2 are respectively fixedly connected with a hydrogen inlet pipe 9 and a second outlet pipe 11, the outer surface of the hydrogen inlet pipe 9 is provided with an external pipeline 10, the outer surface of the external pipeline 10 is provided with a fixing device 7, the fixing device 7 comprises two first auxiliary plates 71, the two first auxiliary plates 71 are arranged on both sides of the external pipeline 10, the two first auxiliary plates 71 are fixedly connected with a clamping plate 72 on the side where the two first auxiliary plates 71 are close to each other, the vertical cross-section of the clamping plate 72 is semi-circular, the bottom of the first auxiliary plate 71 is provided with a second auxiliary plate 73, the first auxiliary A disassembly device 8 is provided between the auxiliary plate 71 and the second auxiliary plate 73. A threaded rod 74 is provided on the side away from the two second auxiliary plates 73. The outer surface of the threaded rod 74 is threadedly connected to a fixing block 75. One side of the two fixing blocks 75 is symmetrically fixedly connected to the outer surface of the anode bin 2. By providing two clamping plates 72, under the action of the threaded rod 74, the threaded rod 74 is rotated, and the threaded rod 74 will expand and contract on the inner wall of the fixing block 75. During the expansion and contraction process, the threaded rod 74 will drive the clamping plates 72 connected to the first auxiliary plate 71 and the second auxiliary plate 73 to move synchronously until the two clamping plates 72 completely clamp the connection between the external pipe 10 and the hydrogen intake pipe 9. Then, the external pipe 10 and the hydrogen intake pipe 9 can be fixed, which is beneficial to prevent the external pipe 10 and the hydrogen intake pipe 9 from generating a gap or separating from each other, thereby ensuring the normal input of hydrogen.
[0029] Reference Figure 2-Figure 4As shown, the ends of the two threaded rods 74 that are away from each other are fixedly connected to an operating block 76, and the outer surface of the operating block 76 is provided with a protrusion. By providing the operating block 76, rotating the operating block 76 can drive the threaded rod 74 to rotate. At the same time, the outer surface of the operating block 76 is provided with a protrusion, which can effectively increase the friction force of the outer surface of the operating block 76, and has an anti-slip effect when the operating block 76 is rotated, thereby facilitating the rotation of the threaded rod 74 through the operating block 76; the ends of the two threaded rods 74 that are close to each other are fixedly connected to a bearing 77, and the outer surface of the bearing 77 is fixedly connected to the inner wall of the second auxiliary plate 73. By providing the bearing 77, the friction force between the threaded rod 74 and the second auxiliary plate 73 can be reduced when the threaded rod 74 rotates, making it more labor-saving when rotating the threaded rod 74.
[0030] Reference Figure 2 and Figure 3 As shown, a slide bar 78 is fixedly connected to one side of the anode bin 2, and a slide groove 79 is opened on one side of the second auxiliary plate 73. The outer surface of the slide bar 78 is slidably connected to the inner walls of the two slide grooves 79. By setting the slide bar 78 and the slide groove 79, when the second auxiliary plate 73 moves under the action of the threaded rod 74, the slide bar 78 and the slide groove 79 can limit the second auxiliary plate 73, thereby making the second auxiliary plate 73, the first auxiliary plate 71 and the clamping plate 72 more stable during the movement; a rubber plate 710 is provided on the side away from the two clamping plates 72, and one side of the rubber plate 710 is fixedly connected to one side of the clamping plate 72. By setting the rubber plate 710, when the clamping plate 72 clamps the external pipe 10, it can play a certain protective role on the external pipe 10.
[0031] Reference Figure 2 and Figure 3 As shown, the disassembly device 8 includes a block 81, one side of the second auxiliary plate 73 is fixedly connected to one side of the block 81, and a slot 82 is provided on one side of the first auxiliary plate 71. The outer surface of the block 81 is inserted into the inner wall of the slot 82. By setting the block 81 and the slot 82, the block 81 is inserted into the inner wall of the slot 82. The slot 82 can limit the block 81, and then the first auxiliary plate 71 and the second auxiliary plate 73 can be connected. At the same time, it is also convenient to disassemble the splint 72 connected to the first auxiliary plate 71, and then it is convenient to maintain and replace the splint 72 and the rubber plate 710 separately.
[0032] Reference Figure 2 and Figure 3As shown, two threaded pins 83 are inserted into the inner wall of the block 81, one end of the threaded pin 83 is fixedly connected to one side of the inner wall of the slot 82, and a nut 84 is provided on the outer surface of the threaded pin 83, and the outer surface of the threaded pin 83 is threadedly inserted into the inner wall of the nut 84. By providing the threaded pin 83, the two threaded pins 83 are inserted into the inner wall of the block 81, and the nut 84 is sleeved on one end of the threaded pin 83, and the nut 84 is rotated so that one side of the nut 84 abuts against one side of the block 81, so that the threaded pin 83 and the block 81 can be limited, and the block 81 can be further prevented from being separated from the inner wall of the slot 82; the outer surfaces of the two threaded pins 83 are sleeved with the same gasket 85, and the gasket 85 is provided between the nut 84 and the block 81. By providing the gasket 85, one side of the two nuts 84 is replaced by abutting against one side of the block 81, which is conducive to preventing the nut 84 from being easily loosened.
[0033] Working principle: When it is necessary to fix the external pipe 10 and the hydrogen intake pipe 9, the rotating operation block 76 drives the threaded rod 74 to rotate, and the threaded rod 74 will be extended and retracted on the inner wall of the fixing block 75. Under the limitation of the slide bar 78 and the slide groove 79, the threaded rod 74 will drive the clamping plate 72 connected to the first auxiliary plate 71 and the second auxiliary plate 73 to move synchronously during the extension and retraction process, until the rubber plate 710 on one side of the two clamping plates 72 completely clamps the connection between the external pipe 10 and the hydrogen intake pipe 9, so that the external pipe 10 and the hydrogen intake pipe 9 can be fixed, which is beneficial to prevent the generation of gaps or occurrence of gas leaks between the external pipe 10 and the hydrogen intake pipe 9. They are separated from each other to ensure the normal input of hydrogen; when it is necessary to install and fix the first auxiliary plate 71 and the second auxiliary plate 73, the block 81 is inserted into the inner wall of the slot 82 so that the two threaded pins 83 enter the inner wall of the block 81, and then the gasket 85 is sleeved on the outer surface of the two threaded pins 83, and the two nuts 84 are sleeved on one end of the threaded pins 83. The two nuts 84 are rotated respectively so that one side of the nut 84 abuts against one side of the gasket 85, and one side of the gasket 85 abuts against one side of the block 81. At the same time, it is also convenient to disassemble the splint 72 connected to the first auxiliary plate 71, and then it is convenient to maintain and replace the splint 72 and the rubber plate 710 separately.
Claims
1. A low-pressure pipeline structure of a hydrogen fuel cell, comprising a cathode compartment (1) and an anode compartment (2), characterized in that: The cathode chamber (1) and the anode chamber (2) are provided with a same diaphragm (3) on the side close to each other; the top and bottom of the cathode chamber (1) are respectively fixedly connected with an oxygen inlet pipe (4) and a first outlet pipe (5); the inner wall of the oxygen inlet pipe (4) is provided with a humidifier (6); the top and bottom of the anode chamber (2) are respectively fixedly connected with a hydrogen inlet pipe (9) and a second outlet pipe (11); the outer surface of the hydrogen inlet pipe (9) is provided with an external pipe (10); the outer surface of the external pipe (10) is provided with a fixing device (7); the fixing device (7) comprises two first auxiliary plates (71); the two first auxiliary plates (71) are provided with a fixing device (71); 1) are arranged on both sides of an external pipe (10), the two first auxiliary plates (71) are fixedly connected to each other on one side close to each other with a clamping plate (72), the vertical cross-section of the clamping plate (72) is semi-circular, a second auxiliary plate (73) is arranged at the bottom of the first auxiliary plate (71), a convenient disassembly device (8) is arranged between the first auxiliary plate (71) and the second auxiliary plate (73), a threaded rod (74) is arranged on one side away from each other of the two second auxiliary plates (73), the outer surface of the threaded rod (74) is threadedly connected to a fixing block (75), and one side of the two fixing blocks (75) is symmetrically fixedly connected to the outer surface of the anode bin (2).
2. A low-pressure pipeline structure for a hydrogen fuel cell according to claim 1, characterized in that: The ends of the two threaded rods (74) that are away from each other are fixedly connected to an operating block (76), and a protrusion is provided on the outer surface of the operating block (76).
3. A low-pressure pipeline structure for a hydrogen fuel cell according to claim 1, characterized in that: The adjacent ends of the two threaded rods (74) are both fixedly connected to a bearing (77), and the outer surface of the bearing (77) is fixedly connected to the inner wall of the second auxiliary plate (73).
4. A low-pressure pipeline structure for a hydrogen fuel cell according to claim 1, characterized in that: A slide bar (78) is fixedly connected to one side of the anode bin (2), a slide groove (79) is provided on one side of the second auxiliary plate (73), and the outer surface of the slide bar (78) is slidably connected to the inner walls of the two slide grooves (79).
5. A low-pressure pipeline structure for a hydrogen fuel cell according to claim 1, characterized in that: A rubber plate (710) is provided on one side of the two clamping plates (72) that is away from each other, and one side of the rubber plate (710) is fixedly connected to one side of the clamping plate (72).
6. A low-pressure pipeline structure for a hydrogen fuel cell according to claim 1, characterized in that: The convenient disassembly device (8) comprises a clamping block (81), one side of the second auxiliary plate (73) is fixedly connected to one side of the clamping block (81), one side of the first auxiliary plate (71) is provided with a clamping groove (82), and the outer surface of the clamping block (81) is inserted into the inner wall of the clamping groove (82).
7. A low-pressure pipeline structure for a hydrogen fuel cell according to claim 6, characterized in that: Two threaded pins (83) are inserted into the inner wall of the clamping block (81), one end of the threaded pin (83) is fixedly connected to one side of the inner wall of the clamping groove (82), and a nut (84) is provided on the outer surface of the threaded pin (83), and the outer surface of the threaded pin (83) is threadedly inserted into the inner wall of the nut (84).
8. A low-pressure pipeline structure for a hydrogen fuel cell according to claim 7, characterized in that: The outer surfaces of the two threaded pins (83) are sleeved with a same gasket (85), and the gasket (85) is arranged between the nut (84) and the clamping block (81).