Hydrogen valve for hydrogen fuel cell

Abstract

The utility model discloses a hydrogen valve for a hydrogen fuel cell, which comprises a valve body, a gas inlet pipe is arranged at the bottom of the valve body, a control valve is in threaded connection with the top of the valve body, a valve handle is fixed at the top end of the control valve, and an exhaust pipe is arranged on one side of the valve body. One end of the exhaust pipe is connected with a connecting pipe, and a limiting and fixing assembly is arranged between the connecting pipe and the exhaust pipe. According to the hydrogen valve for the hydrogen fuel cell, through the arrangement of the mounting connecting mechanism, rapid dismounting and splicing of the first waterproof jacket and the second waterproof jacket are achieved, through the arrangement of the first waterproof jacket and the second waterproof jacket, water prevention of the joint of the control valve and the valve body is achieved, and when the hydrogen valve is used outside, rainwater is prevented from flowing in from a gap; and the thread between the control valve and the valve main body is further prevented from being rusted.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen valves, in particular to a hydrogen valve used in hydrogen fuel cells. Background Art

[0002] Existing valves are pipeline accessories used to open and close pipelines, control flow direction, adjust and control the parameters of the conveying medium, temperature, pressure and flow. According to their functions, they can be divided into shut-off valves, check valves and regulating valves. Valves are control components in fluid conveying systems and have functions such as shut-off, regulation, diversion, prevention of backflow, pressure stabilization and diversion or overflow pressure relief. Valves used in fluid control systems come in a wide variety of varieties and specifications, from the simplest shut-off valves to various valves used in extremely complex automatic control systems.

[0003] Referring to the Chinese patent, a hydrogen valve for hydrogen fuel cells (publication number: CN207814601U, publication date: 2018-09-04), the patent solves the problem that the safety performance of traditional hydrogen valves is poor, which makes the hydrogen valves easy to fall off during use. The sealing effect of traditional hydrogen valves is not good enough. The hydrogen valves are prone to leakage during long-term use. Traditional hydrogen valves cannot display the air pressure inside the valve, and the functionality is relatively single, which has certain safety hazards. However, due to the gap between the control valve and the valve body when it is rotated, rainwater is easy to flow in from the gap when it is used outside. Over time, the threads between the control valve and the valve body will rust, and the control valve will be difficult to twist. In addition, the exhaust pipe is connected to the connecting pipe by threads, but if the connecting pipe is heavy, the end of the connecting pipe inserted into the exhaust pipe will produce a lever effect due to gravity, squeezing the thread upward. Over time, the force of squeezing the thread will increase, affecting the connection effect. In this regard, we propose a hydrogen valve for hydrogen fuel cells to solve the above problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a hydrogen valve for a hydrogen fuel cell, which solves the problem that due to a gap between the control valve and the valve body when the control valve is rotated, rainwater easily flows in through the gap when used outdoors, and the threads between the control valve and the valve body will rust over time, making it difficult to turn the control valve. In addition, the exhaust pipe and the connecting pipe are connected by threads, but if the connecting pipe is heavy, the end of the connecting pipe inserted into the exhaust pipe will produce a lever effect due to gravity, squeezing the threads upward. Over time, the force exerted on the threads will increase, affecting the connection effect.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a hydrogen valve for a hydrogen fuel cell, comprising a valve body, an air inlet pipe is arranged at the bottom of the valve body, a control valve is threadedly connected to the top of the valve body, a valve handle is fixed to the top of the control valve, an exhaust pipe is arranged on one side of the valve body, a connecting pipe is connected to one end of the exhaust pipe, a limited position fixing component is arranged between the connecting pipe and the exhaust pipe, a first waterproof sleeve and a second waterproof sleeve are arranged at the top of the valve body and on both sides of the outer surface of the control valve, and an installation connection mechanism is arranged between the first waterproof sleeve and the second waterproof sleeve.

[0006] Preferably, the installation and connection mechanism includes two square rods fixed on one side of the first waterproof cover, slots are provided on the tops of the two square rods, two transverse grooves are provided on one side of the second waterproof cover, and one ends of the two square rods pass through the transverse grooves and extend into the interior of the transverse grooves.

[0007] Preferably, the inner surfaces of the two transverse grooves are slidably connected with slides, one side of the two slides is in contact and extrusion with one end of the square rod, a spring is fixed between the other side of the two slides and the inner wall of the transverse groove, and the top of the second waterproof cover is slidably connected with two plug rods, and the bottom ends of the two plug rods pass through the second waterproof cover and the transverse groove and extend to the inside of the slot.

[0008] Preferably, the position limiting fixing assembly comprises fixing plates fixed on both sides of the exhaust pipe, the two fixing plates are threadedly connected to threaded rods on one side away from each other, and the two threaded rods are fixed to rotating handles on one end away from each other.

[0009] Preferably, the opposite ends of the two threaded rods pass through the fixed plate and extend to the outside of the fixed plate, limiting clamps are provided on both sides of the connecting tube, the opposite ends of the two threaded rods are rotatably connected to one side of the limiting clamp, and transverse tubes are fixed on the opposite sides of the two fixed plates.

[0010] Preferably, a cross bar is fixed to the side away from each other of the two limit clamps, and the ends away from each other of the two cross bars penetrate the cross tube and extend to the inside of the cross tube, and the outer surfaces of the two cross bars are slidably connected to the inner surface of the cross tube.

[0011] Beneficial Effects

[0012] The utility model provides a hydrogen valve for a hydrogen fuel cell. Compared with the prior art, it has the following beneficial effects:

[0013] (1) By installing the connection mechanism, the first waterproof cover and the second waterproof cover can be quickly disassembled and assembled. By installing the first waterproof cover and the second waterproof cover, the connection between the control valve and the valve body is waterproofed. When used outdoors, rainwater is prevented from flowing in through the gap, and the threads between the control valve and the valve body are further prevented from rusting.

[0014] (2) By setting the limit fixing assembly, the clamping and limiting of the connecting pipe is achieved, which prevents the connecting pipe from tilting up due to gravity and squeezing the threads in the exhaust pipe, thereby preventing the threads from being squeezed and enlarged. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the external structure of the utility model;

[0016] Figure 2 This is a cross-sectional view of the second waterproof cover of the utility model;

[0017] Figure 3 It is a three-dimensional diagram of the position limiting and fixing component of the utility model.

[0018] In the figure: 1. valve body; 2. air inlet pipe; 3. control valve; 4. valve handle; 5. exhaust pipe; 6. connecting pipe; 7. limit fixing assembly; 8. first waterproof cover; 9. second waterproof cover; 10. installation connection mechanism; 101. square rod; 102. slot; 103. horizontal groove; 104. slide plate; 105. spring; 106. plug rod; 71. fixing plate; 72. threaded rod; 73. rotating handle; 74. limit clamp; 75. horizontal tube; 76. horizontal rod. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] The utility model provides two technical solutions: specifically including the following embodiments:

[0021] Example 1

[0022] See also Figure 1-Figure 2A hydrogen valve for a hydrogen fuel cell comprises a valve body 1, an air inlet pipe 2 is arranged at the bottom of the valve body 1, a control valve 3 is threadedly connected to the top of the valve body 1, a valve handle 4 is fixed to the top of the control valve 3, and the control valve 3 can be driven to move up and down and switch by turning the valve handle 4, an exhaust pipe 5 is arranged on one side of the valve body 1, and a connecting pipe 6 is connected to one end of the exhaust pipe 5, a first waterproof cover 8 and a second waterproof cover 9 are arranged on the top of the valve body 1 and on both sides of the outer surface of the control valve 3, the first waterproof cover 8 and the second waterproof cover 9 are both semi-cylindrical, and become a complete waterproof cover after splicing, the first waterproof cover 8 and the second waterproof cover 9 are made of rubber material, and an installation connection mechanism 10 is arranged between the first waterproof cover 8 and the second waterproof cover 9.

[0023] The installation connection mechanism 10 includes two square rods 101 fixed on one side of the first waterproof cover 8, and the tops of the two square rods 101 are provided with slots 102. One side of the second waterproof cover 9 is provided with two transverse grooves 103. The sizes of the square rods 101 and the transverse grooves 103 are adapted, and one end of the two square rods 101 penetrates the transverse groove 103 and extends to the inside of the transverse groove 103.

[0024] The inner surfaces of the two transverse grooves 103 are slidably connected with slide plates 104, one side of the two slide plates 104 is in contact and squeezed with one end of the square rod 101, and a spring 105 is fixed between the other side of the two slide plates 104 and the inner wall of the transverse groove 103, and the top of the second waterproof cover 9 is slidably connected with two plug rods 106, the plug rods 106 are adapted to the size of the slot 102, and the bottom ends of the two plug rods 106 penetrate the second waterproof cover 9 and the transverse groove 103 and extend to the inside of the slot 102.

[0025] By installing the connecting mechanism 10, the first waterproof cover 8 and the second waterproof cover 9 can be quickly disassembled and assembled. By installing the first waterproof cover 8 and the second waterproof cover 9, the connection between the control valve 3 and the valve body 1 is waterproofed. When used outdoors, rainwater is prevented from flowing in through the gap, and rust on the threads between the control valve 3 and the valve body 1 is further prevented.

[0026] Example 2

[0027] Based on Example 1, see Figure 3 As shown, a limit fixing assembly 7 is arranged between the connecting pipe 6 and the exhaust pipe 5, and the limit fixing assembly 7 includes fixing plates 71 fixed on both sides of the exhaust pipe, and the two fixing plates 71 are threadedly connected to the side away from each other with threaded rods 72, and the two threaded rods 72 are fixed to the end away from each other with a rotating handle 73.

[0028] The opposite ends of the two threaded rods 72 pass through the fixing plate 71 and extend to the outside of the fixing plate 71. Limiting clamps 74 are provided on both sides of the connecting tube 6. The limiting clamps 74 are adapted to the size of the outer wall of the connecting tube 6. The limiting clamps 74 can clamp and limit the connecting tube 6 to prevent the connecting tube 6 from being too heavy and damaging the threads inside the connecting tube 6. The opposite ends of the two threaded rods 72 are rotatably connected to one side of the limiting clamps 74, and transverse tubes 75 are fixed on the opposite sides of the two fixing plates 71.

[0029] A cross bar 76 is fixed to the side away from the two limit clamps 74 , and the ends away from the two cross bars 76 penetrate the cross tube 75 and extend to the inside of the cross tube 75 . The outer surfaces of the two cross bars 76 are slidably connected to the inner surface of the cross tube 75 .

[0030] By setting the limiting and fixing assembly 7, the connection pipe 6 is clamped and limited, which prevents the connection pipe 6 from tilting due to gravity and squeezing the threads in the exhaust pipe 5, thereby preventing the threads from being squeezed and enlarged.

[0031] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0032] During operation, firstly, the first waterproof cover 8 and the second waterproof cover 9 are put on the outer surface of the control valve 3, and then the two square rods 101 on the first waterproof cover 8 are inserted into the horizontal groove 103, and then the two square rods 101 begin to squeeze the slide plate 104, and at the same time the slide plate 104 begins to squeeze the compression spring 105, and then the insertion rod 106 is inserted, and finally the insertion rod 106 passes through the second waterproof cover 9 and is inserted into the slot 102, and by rotating the two rotating handles 73, the rotating handles 73 drive the two threaded rods 72 to rotate, and at the same time the threaded rods 72 drive the two limiting clamps 74 to move toward each other, and at the same time the two limiting clamps 74 drive the cross rod 76 to slide outward along the inner surface of the cross tube 75, and finally the two limiting clamps 74 clamp and fix the connecting pipe 6.

[0033] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A hydrogen valve for a hydrogen fuel cell, comprising a valve body (1), wherein an air inlet pipe (2) is arranged at the bottom of the valve body (1), and characterized in that: The top of the valve body (1) is threadedly connected to a control valve (3), a valve handle (4) is fixed to the top of the control valve (3), an exhaust pipe (5) is arranged on one side of the valve body (1), one end of the exhaust pipe (5) is connected to a connecting pipe (6), a first waterproof cover (8) and a second waterproof cover (9) are arranged on the top of the valve body (1) and on both sides of the outer surface of the control valve (3), and a mounting connection mechanism (10) is arranged between the first waterproof cover (8) and the second waterproof cover (9).

2. A hydrogen valve for a hydrogen fuel cell according to claim 1, characterized in that: The mounting connection mechanism (10) comprises two square rods (101) fixed to one side of the first waterproof cover (8), the tops of the two square rods (101) are provided with slots (102), one side of the second waterproof cover (9) is provided with two transverse grooves (103), one end of the two square rods (101) passes through the transverse groove (103) and extends to the inside of the transverse groove (103).

3. A hydrogen valve for a hydrogen fuel cell according to claim 2, characterized in that: The inner surfaces of the two transverse grooves (103) are slidably connected with slide plates (104), one side of the two slide plates (104) is in contact and extrusion with one end of the square rod (101), and a spring (105) is fixed between the other side of the two slide plates (104) and the inner wall of the transverse groove (103), and the top of the second waterproof cover (9) is slidably connected with two insertion rods (106), and the bottom ends of the two insertion rods (106) penetrate the second waterproof cover (9) and the transverse groove (103) and extend to the inside of the slot (102).

4. The hydrogen valve for a hydrogen fuel cell according to claim 1, characterized in that: A position limiting fixing assembly (7) is provided between the connecting pipe (6) and the exhaust pipe (5), wherein the position limiting fixing assembly (7) comprises fixing plates (71) fixed on both sides of the exhaust pipe (5), threaded rods (72) are threadedly connected to the two fixing plates (71) at the sides away from each other, and rotating handles (73) are fixed to the two ends away from each other of the threaded rods (72).

5. A hydrogen valve for a hydrogen fuel cell according to claim 4, characterized in that: The opposite ends of the two threaded rods (72) penetrate the fixing plate (71) and extend to the outside of the fixing plate (71), and limiting clamps (74) are provided on both sides of the connecting pipe (6), and the opposite ends of the two threaded rods (72) are rotatably connected to one side of the limiting clamp (74), and the opposite sides of the two fixing plates (71) are fixed with transverse tubes (75).

6. A hydrogen valve for a hydrogen fuel cell according to claim 5, characterized in that: A cross bar (76) is fixed to the side away from the two limit clamps (74), and the ends away from the two cross bars (76) penetrate the cross tube (75) and extend to the inside of the cross tube (75), and the outer surfaces of the two cross bars (76) are slidably connected to the inner surface of the cross tube (75).

Images