Pressure relief mechanism of hydrogen energy bottle opening valve

Abstract

The utility model relates to the technical field of hydrogen storage, and discloses a pressure relief mechanism of a hydrogen energy bottle opening valve, which comprises a hydrogen energy bottle main body, a valve body is arranged at the top of the hydrogen energy bottle main body, and an exhaust component with one end communicated with the inner wall of the valve body is arranged on the left side wall of the valve body. According to the pressure relief mechanism of the hydrogen energy bottle opening valve, through the arrangement of the exhaust assembly and the plugging assembly, after hydrogen enters the valve body, under the cooperative use of a compression spring, gas pressure can push a sealing plug to move leftwards, at the moment, gas in the valve body can be leaked out from an exhaust hole, and when the exhaust hole generates howling due to the too high flow speed, the sealing plug can be blocked; at the moment, a rotating rod is rotated to drive a first bevel gear to rotate, under the cooperative use of the first bevel gear and a second bevel gear, a threaded rod rotates to drive a sealing ball to move downwards, an exhaust pipe is opened, then the deflation speed can be increased, pressure can be rapidly reduced, the pressure relief time is greatly shortened, the practicability of the device is greatly improved, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen storage, in particular to a pressure relief mechanism of a hydrogen energy bottle mouth valve. Background Art

[0002] The hydrogen storage method uses high-pressure hydrogen storage in hydrogen storage cylinders. The rational and effective use of the high-pressure hydrogen in the hydrogen storage cylinder is inseparable from the bottle mouth valve. The high-pressure hydrogen in the hydrogen storage cylinder must be processed by the bottle mouth valve and subsequent systems before it can be provided to the fuel cell. Therefore, the bottle mouth valve is a very important component in the hydrogen supply system. Its performance directly affects the normal operation of the fuel cell, the efficiency of the hydrogen supply system, and the safety performance of the hydrogen supply system.

[0003] At present, the pressure relief mechanism in the common bottle mouth valve on the market is a fusible alloy plug pressure relief device integrated on the main valve body of the bottle mouth valve. In special circumstances, such as when the gas in the hydrogen storage cylinder needs to be released after the air pressure test or when it is not used for a long time, a flow limiting valve is integrated on the bottle mouth valve to release the gas. The flow limiting valve is used for deflation. The flow limiting valve releases the gas very slowly and may take a whole day. It is not convenient to use. Therefore, a pressure relief mechanism of a hydrogen energy bottle mouth valve is proposed to solve the above-mentioned problems. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a pressure relief mechanism for a hydrogen energy bottle mouth valve, which has the advantages of accelerating the deflation speed, etc., and solves the problem that the pressure relief mechanism in the bottle mouth valve commonly seen on the market is that a fusible alloy plug pressure relief device is integrated on the main valve body of the bottle mouth valve. Under special circumstances, such as after an air pressure test or when the gas in the hydrogen storage cylinder needs to be released when not in use for a long time, a flow limiting valve is integrated on the bottle mouth valve, and the gas is deflated through the flow limiting valve. The flow limiting valve deflates very slowly and may take a whole day, which is not convenient to use.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose of accelerating the deflation speed, the utility model provides the following technical solutions: a pressure relief mechanism of a hydrogen energy bottle mouth valve, comprising a hydrogen energy bottle body, a valve body is arranged on the top of the hydrogen energy bottle body, a left side wall of the valve body is provided with an exhaust component whose end is connected to the inner wall thereof, an exhaust pipe connected to the inner wall thereof is arranged on the top of the valve body, and a plugging component whose end extends to the outside thereof is arranged on the inner top wall of the valve body;

[0008] The exhaust assembly includes a sleeve, a sleeve with one end extending to the outside of the valve body is provided on the left side of the inner wall of the valve body, a compression spring is provided on the left side of the inner wall of the sleeve, a sealing plug tightly fitted with the inner wall of the sleeve is provided on the right side wall of the compression spring, and exhaust holes are provided on the top and bottom of the sleeve, and the exhaust hole is located on the left side of the sealing plug;

[0009] The sealing assembly includes a connecting plate, a connecting plate is arranged between the two sides of the front side of the inner wall of the valve body, limit rods are arranged on the left and right sides of the top of the connecting plate, the two limit rods are connected to the inner top wall of the valve body, the exhaust pipe is located between the two limit rods, and sliders are arranged on the outside of the two limit rods, and a sealing ball that fits tightly with the bottom of the exhaust pipe is arranged between the two sliders, a threaded rod located between the two limit rods and threadedly connected to the inner wall of the sealing ball is arranged on the top of the connecting plate, a second bevel gear is arranged on the outside of the threaded rod, a rectangular plate located on the right side of the threaded rod is arranged on the top of the connecting plate, a rotating rod with one end extending to the right side thereof is arranged on the left side wall of the rectangular plate, the right side wall of the rotating rod extends to the right side of the valve body, and the left side wall of the rotating rod is provided with a first bevel gear meshing with the outside of the second bevel gear.

[0010] Preferably, the outside of the sealing plug is fixedly connected to a rubber pad that fits tightly with the inner wall of the sleeve.

[0011] Preferably, a thread groove matching the threaded rod is formed inside the sealing ball.

[0012] Preferably, a circular rotating disk is fixedly connected to the right side wall of the rotating rod.

[0013] Preferably, a sliding hole matched with the limiting rod is opened inside the sliding block.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a pressure relief mechanism for a hydrogen energy bottle valve, which has the following beneficial effects:

[0016] The pressure relief mechanism of the hydrogen energy bottle mouth valve is provided with an exhaust component and a plugging component. After the hydrogen enters the interior of the valve body, the gas pressure will push the sealing plug to move to the left under the cooperation of the compression spring. At this time, the gas in the valve body will leak out from the exhaust hole. When the exhaust hole produces a howl due to the excessive flow rate, the rotating rod is rotated to drive the first bevel gear to rotate. Under the cooperation of the first bevel gear and the second bevel gear, the threaded rod rotates to drive the sealing ball to move down and the exhaust pipe is opened, thereby accelerating the deflation speed and quickly reducing the pressure, greatly shortening the pressure relief time, and greatly improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 For this utility model Figure 1 Enlarged schematic diagram at point A in the middle.

[0019] In the figure: 1. Hydrogen energy bottle body; 2. Valve body; 3. Exhaust assembly; 31. Sleeve; 32. Sealing plug; 33. Compression spring; 34. Exhaust hole; 4. Exhaust pipe; 5. Sealing assembly; 51. Connecting plate; 52. Limit rod; 53. Sliding block; 54. Sealing ball; 55. Rotating rod; 56. Rectangular plate; 57. First bevel gear; 58. Threaded rod; 59. Second bevel gear. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-2 A pressure relief mechanism of a hydrogen energy bottle mouth valve comprises a hydrogen energy bottle body 1, a valve body 2 is fixedly connected to the top of the hydrogen energy bottle body 1, a left side wall of the valve body 2 is connected to an exhaust component 3 whose end is connected to its inner wall, the exhaust component 3 comprises a sleeve 31, the left side of the inner wall of the valve body 2 is connected to the sleeve 31 whose end extends to the outside, a rubber pad tightly fitted to the inner wall of the sleeve 31 is fixedly connected to the outside of a sealing plug 32, a compression spring 33 is fixedly connected to the left side of the inner wall of the sleeve 31, a sealing plug 32 tightly fitted to the inner wall of the sleeve 31 is fixedly connected to the right side wall of the compression spring 33, exhaust holes 34 are provided at the top and bottom of the sleeve 31, and the exhaust hole 34 is located on the left side of the sealing plug 32.

[0022] The top of the valve body 2 is fixedly connected with an exhaust pipe 4 connected with its inner wall, and the inner top wall of the valve body 2 is movably connected with a plugging component 5 with one end extending to the outside thereof. The plugging component 5 includes a connecting plate 51, and a connecting plate 51 is fixedly connected between the two sides of the front side of the inner wall of the valve body 2. The left and right sides of the top of the connecting plate 51 are fixedly connected with limit rods 52, and the two limit rods 52 are fixedly connected to the inner top wall of the valve body 2. The exhaust pipe 4 is located between the two limit rods 52. The outsides of the two limit rods 52 are slidably connected with sliders 53, and the inside of the sliders 53 is provided with sliding holes adapted to the limit rods 52. A sealing ball 54 tightly fitting with the bottom of the exhaust pipe 4 is fixedly connected between the two sliders 53. The top of the connecting plate 51 is rotatably connected to a threaded rod 58 located between the two limit rods 52 and threadedly connected to the inner wall of the sealing ball 54. The interior of the sealing ball 54 is provided with a threaded groove compatible with the threaded rod 58. The outside of the threaded rod 58 is fixedly connected to a second bevel gear 59. The top of the connecting plate 51 is fixedly connected to a rectangular plate 56 located on the right side of the threaded rod 58. The left side wall of the rectangular plate 56 is movably connected to a rotating rod 55 with one end extending to the right side thereof. The right side wall of the rotating rod 55 is fixedly connected to a circular rotating disk. The right side wall of the rotating rod 55 extends to the right side of the valve body 2. The left side wall of the rotating rod 55 is fixedly connected to a first bevel gear 57 meshing with the outside of the second bevel gear 59.

[0023] When in use, after hydrogen enters the valve body 2, with the cooperation of the compression spring 33, the gas pressure will push the sealing plug 32 to move to the left. At this time, the gas in the valve body 2 will leak out from the exhaust hole 34. When the exhaust hole 34 produces a howling sound due to the excessive flow rate, the rotating rod 55 is rotated to drive the first bevel gear 57 to rotate. With the cooperation of the first bevel gear 57 and the second bevel gear 59, the threaded rod 58 rotates to drive the sealing ball 54 to move down to open the exhaust pipe 4, thereby accelerating the deflation speed.

[0024] It is worth noting that the standard parts used in this application document can all be purchased from the market, and the specific connection methods of each part are connected by conventional means such as mature bolts, rivets, welding, etc. in the prior art, and the machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art. The contents not described in detail in the description belong to the prior art known to professional and technical personnel in this field and will not be described in detail here.

[0025] In summary, the pressure relief mechanism of the hydrogen energy bottle mouth valve is provided with the exhaust component 3 and the plugging component 5. After the hydrogen enters the valve body 2, the gas pressure will push the sealing plug 32 to move to the left under the cooperation of the compression spring 33. At this time, the gas in the valve body 2 will leak out from the exhaust hole 34. When the exhaust hole 34 produces a howl due to the excessive flow rate, the rotating rod 55 is rotated to drive the first bevel gear 57 to rotate. Under the cooperation of the first bevel gear 57 and the second bevel gear 59, the threaded rod 58 rotates to drive the sealing ball 54 to move downward. The exhaust pipe 4 is open, which can speed up the deflation speed and reduce the pressure quickly, so that the pressure relief time is greatly shortened, which greatly improves the practicability of the device and solves the problem that the pressure relief mechanism in the common bottle mouth valve on the market is an integrated fusible alloy plug pressure relief device on the main valve body of the bottle mouth valve. Under special circumstances, such as after the air pressure test or when the gas in the hydrogen storage cylinder needs to be released when it is not used for a long time, a flow limiting valve is integrated on the bottle mouth valve to release the gas. The flow limiting valve is used for deflation, and the flow limiting valve deflates very slowly, which may take a whole day and is not convenient to use.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure relief mechanism for a hydrogen energy bottle valve, comprising a hydrogen energy bottle body (1), characterized in that: A valve body (2) is arranged on the top of the main body (1) of the hydrogen energy bottle, an exhaust assembly (3) whose end is connected to the inner wall of the valve body (2) is arranged on the left side wall, an exhaust pipe (4) is arranged on the top of the valve body (2) and is connected to the inner wall of the valve body, and a plugging assembly (5) whose end extends to the outside of the valve body (2) is arranged on the inner top wall of the valve body (2); The exhaust assembly (3) comprises a sleeve (31), a sleeve (31) having one end extending to the outside of the valve body (2) is arranged on the left side of the inner wall of the valve body (2), a compression spring (33) is arranged on the left side of the inner wall of the sleeve (31), a sealing plug (32) tightly fitted with the inner wall of the sleeve (31) is arranged on the right side wall of the compression spring (33), and an exhaust hole (34) is arranged on the top and bottom of the sleeve (31), and the exhaust hole (34) is located on the left side of the sealing plug (32); The blocking assembly (5) comprises a connecting plate (51), a connecting plate (51) is arranged between the two sides of the front side of the inner wall of the valve body (2), limiting rods (52) are arranged on the left and right sides of the top of the connecting plate (51), the two limiting rods (52) are connected to the inner top wall of the valve body (2), the exhaust pipe (4) is located between the two limiting rods (52), the outside of the two limiting rods (52) are arranged with sliders (53), a sealing ball (54) which is tightly fitted with the bottom of the exhaust pipe (4) is arranged between the two sliders (53), and the top of the connecting plate (51) is arranged with a sealing ball (54) which is tightly fitted with the bottom of the exhaust pipe (4). A threaded rod (58) is located between the two limit rods (52) and is threadedly connected to the inner wall of the sealing ball (54). A second bevel gear (59) is arranged on the outside of the threaded rod (58). A rectangular plate (56) is arranged on the top of the connecting plate (51) and is located on the right side of the threaded rod (58). A rotating rod (55) with one end extending to the right side thereof is arranged on the left side wall of the rectangular plate (56). The right side wall of the rotating rod (55) extends to the right side of the valve body (2). A first bevel gear (57) meshing with the outside of the second bevel gear (59) is arranged on the left side wall of the rotating rod (55).

2. The pressure relief mechanism of a hydrogen energy bottle valve according to claim 1 is characterized in that: The outside of the sealing plug (32) is fixedly connected to a rubber pad that fits tightly against the inner wall of the sleeve (31).

3. The pressure relief mechanism of a hydrogen energy bottle valve according to claim 1 is characterized in that: The sealing ball (54) has a thread groove inside which is matched with the threaded rod (58).

4. The pressure relief mechanism of a hydrogen energy bottle valve according to claim 1 is characterized in that: A circular rotating disk is fixedly connected to the right side wall of the rotating rod (55).

5. The pressure relief mechanism of a hydrogen energy bottle valve according to claim 1 is characterized in that: The sliding block (53) is provided with a sliding hole inside thereof which is matched with the limiting rod (52).

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