Variable cross-section hydrogen valve

Abstract

The utility model relates to hydrogen valve technical field discloses a variable cross section hydrogen valve, including valve body, the valve body inside is equipped with valve seat, the valve body top is fixedly installed with the valve cover through bolt, the valve cover inside is fixedly installed with sealing element through bolt, the valve cover top is equipped with the adjusting mechanism, the valve cover top fixedly connected with the mount, the mount inside screw thread connection has the threaded column, the threaded column top fixedly bushed with the runner, the utility model discloses when needing to change the flow cross section, through the setting of runner, threaded column, mount, lifting piece and adjusting cylinder, when adjusting cylinder ascends, the gas outlet groove width of the valve seat notch is from narrow to wide transition, and the flow cross section continuously increases, when descending, the exposed gas outlet groove width is from wide to narrow transition, and the flow cross section continuously reduces, thereby realizing the purpose that the flow cross section changes, and the operation mode is simple and easy to understand, can realize the continuous, accurate regulation of the flow cross section, satisfies different hydrogen flow demand.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen valve technology, and in particular to a variable cross-section hydrogen valve. Background Technology

[0002] Hydrogen, as a clean and efficient energy carrier, is increasingly widely used in new energy vehicles, fuel cell power generation, and industrial chemicals. However, hydrogen has characteristics such as small molecular weight, high permeability, and easy leakage. The safety and flow control accuracy during its storage, transportation, and use have always been core issues of concern in the industry. The variable cross-section hydrogen valve is a control valve specifically designed for hydrogen media. Its core feature is that it can achieve precise control of parameters such as hydrogen flow rate and pressure by adjusting the size of the internal flow cross-section of the valve.

[0003] In practical applications, traditional valves typically employ graded regulation (such as multi-position through-hole design), which makes it difficult to achieve continuous changes in the flow cross-section, resulting in "step-like jumps" in flow regulation. This makes it difficult to match precise flow requirements. Furthermore, the sealing structure of traditional valves is relatively simple, reducing the effective service life of the device. Based on this, a variable cross-section hydrogen valve is proposed for improvement. Utility Model Content

[0004] In view of the problems mentioned above, existing traditional valves are difficult to achieve continuous and precise adjustment of the flow cross section and have a relatively simple sealing structure, so this utility model is proposed.

[0005] To solve the above technical problems, this utility model provides the following technical solution: a variable cross-section hydrogen valve, including a valve body, a valve seat inside the valve body, a valve cover fixedly installed on the top of the valve body by bolts, a sealing element fixedly installed inside the valve cover by bolts, and an adjustment mechanism above the valve cover;

[0006] A mounting bracket is fixedly connected to the top of the valve cover. A threaded post is threaded inside the mounting bracket. A rotating wheel is fixedly sleeved on the top of the threaded post. A lifting post is fixedly sleeved on the bottom of the threaded post. The bottom of the lifting post passes through the inside of the seal and is fixedly connected to a lifting block. A rubber pad is fixedly sleeved on the side wall of the lifting block. The surface of the rubber pad is in contact with the inner wall of the groove at the top of the valve seat. An adjusting cylinder is fixedly sleeved on the bottom of the lifting block. Several air outlet grooves are opened on the surface of the adjusting cylinder.

[0007] As a preferred embodiment, the plurality of air outlet grooves are arranged in a spiral shape, and the inner width of the plurality of air outlet grooves gradually decreases from one end to the other.

[0008] As a preferred embodiment, a sealing groove is provided on the inner wall of the valve body, and a connecting rod is fixedly connected to one side of the regulating cylinder.

[0009] As a preferred embodiment, one end of the connecting rod is fixedly connected to a sealing plate, and the sealing plate is slidably connected to the inner wall of the sealing groove.

[0010] As a preferred embodiment, the bottom end of the lifting block is fixedly connected to an annular plate, the top end of the valve seat is provided with an annular groove, and a sealing ring is fixedly connected to the inner wall of the annular groove.

[0011] As a preferred embodiment, the annular plate is fitted into the inner wall of the annular groove, and the bottom end of the annular plate is in contact with the top surface of the sealing ring.

[0012] Compared with the prior art, the present invention has at least the following beneficial effects:

[0013] 1. When the flow cross-section needs to be changed, this utility model, through the setting of the rotating wheel, threaded column, mounting bracket, lifting block and adjusting cylinder, when the adjusting cylinder rises, the width of the gas outlet groove exposed at the valve seat groove transitions from narrow to wide, and the flow cross-section continuously increases; when it falls, the width of the exposed gas outlet groove transitions from wide to narrow, and the flow cross-section continuously decreases, thereby achieving the purpose of changing the flow cross-section. The operation method is simple and easy to understand, and it can achieve continuous and precise adjustment of the flow cross-section to meet different hydrogen flow requirements.

[0014] 2. When the lifting block descends, the annular plate descends with the lifting block and is precisely embedded in the inner wall of the annular groove, forming a physical barrier to block the lateral flow of hydrogen. The bottom end of the annular plate presses against the sealing ring to achieve airtightness. At the same time, combined with the fit between the rubber pad and the valve seat groove, and the sealing plate sealing the valve seat inlet, a three-level sealing system is formed, blocking the hydrogen leakage path layer by layer. This effectively prevents hydrogen leakage, allowing the device to maintain good sealing performance during long-term use and extending the effective service life of the device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0017] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0018] Figure 4 This is an enlarged structural diagram of the lifting block and adjusting cylinder in this utility model.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Valve body; 11. Valve seat; 12. Sealing groove; 2. Valve cover; 21. Sealing element; 3. Adjusting mechanism; 31. Mounting bracket; 32. Rotary wheel; 33. Threaded column; 34. Lifting column; 35. Lifting block; 36. Rubber pad; 37. Adjusting cylinder; 38. Air outlet groove; 39. Connecting rod; 310. Sealing plate; 4. Annular groove; 5. Sealing ring; 6. Annular plate. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] Reference Figures 1-4 The first embodiment of this utility model provides a variable cross-section hydrogen valve, including a valve body 1, a valve seat 11 inside the valve body 1, a valve cover 2 fixedly installed on the top of the valve body 1 by bolts, a sealing element 21 fixedly installed inside the valve cover 2 by bolts, and an adjustment mechanism 3 above the valve cover 2.

[0023] A mounting bracket 31 is fixedly connected to the top of the valve cover 2. A threaded post 33 is threadedly connected inside the mounting bracket 31. A rotating wheel 32 is fixedly sleeved at the top of the threaded post 33. A lifting post 34 is fixedly sleeved at the bottom of the threaded post 33. The bottom of the lifting post 34 passes through the inside of the seal 21 and is fixedly connected to a lifting block 35. A rubber pad 36 is fixedly sleeved on the side wall of the lifting block 35. The surface of the rubber pad 36 contacts the inner wall of the groove at the top of the valve seat 11. An adjusting cylinder 37 is fixedly sleeved at the bottom of the lifting block 35. Several air outlet grooves 38 are opened on the surface of the adjusting cylinder 37.

[0024] Several air outlet slots 38 are arranged in a spiral shape, and the inner width of the several air outlet slots 38 gradually decreases from one end to the other.

[0025] During use, when it is necessary to change the flow cross section, rotate the wheel 32. The wheel 32 drives the threaded column 33 to rotate synchronously. At this time, the threaded column 33 is connected to the mounting bracket 31, so that the rotational motion of the threaded column 33 is converted into vertical lifting motion. The threaded column 33 drives the lifting column 34 at its bottom to lift synchronously, thereby driving the lifting block 35 to move up and down. The seal 21 can prevent hydrogen from leaking from the gap.

[0026] The lifting block 35 will synchronously drive the regulating cylinder 37 to move up and down. When the regulating cylinder 37 rises, more spiral gas outlet grooves 38 are exposed from the slot at the top of the valve seat 11. Since the inner width of the gas outlet groove 38 gradually decreases from one end to the other, the width of the exposed gas outlet groove 38 will transition from narrow to wide, thereby increasing the flow cross section through which hydrogen can pass. When the regulating cylinder 37 descends, more of the gas outlet groove 38 is blocked by the slot of the valve seat 11, and the width of the exposed gas outlet groove 38 transitions from wide to narrow, thereby reducing the flow cross section through which hydrogen can pass.

[0027] When this design requires changing the flow cross-section, the setting of the rotating wheel 32, threaded column 33, mounting bracket 31, lifting block 35 and adjusting cylinder 37 allows the flow cross-section to continuously increase as the adjusting cylinder 37 rises, the width of the exposed gas outlet groove 38 at the valve seat 11 groove transitions from narrow to wide; when it falls, the width of the exposed gas outlet groove 38 transitions from wide to narrow, the flow cross-section continuously decreases. This achieves the purpose of changing the flow cross-section. The operation is simple and easy to understand, and it can achieve continuous and precise adjustment of the flow cross-section to meet different hydrogen flow requirements.

[0028] Reference Figures 1-4 This is the second embodiment of the present utility model. The difference between this embodiment and the first embodiment is that a sealing groove 12 is provided on the inner wall of the valve body 1, and a connecting rod 39 is fixedly connected to one side of the adjusting cylinder 37.

[0029] One end of the connecting rod 39 is fixedly connected to a sealing plate 310, and the sealing plate 310 is slidably connected to the inner wall of the sealing groove 12.

[0030] During use, when the regulating cylinder 37 rises, the regulating cylinder 37 drives the sealing plate 310 to rise through the connecting rod 39, so that the sealing plate 310 enters the inner wall of the sealing groove 12, thereby allowing hydrogen to flow into the valve seat 11. When the regulating cylinder 37 falls, the sealing plate 310 seals the valve seat 11, preventing hydrogen from flowing into the valve seat 11.

[0031] When the lifting block 35 descends, the rubber pad 36 fits into the groove of the valve seat 11 to form a primary seal, while the sealing plate 310 seals the inlet of the valve seat 11 to form a secondary seal, which can effectively prevent hydrogen leakage.

[0032] Reference Figures 1-4 This is the third embodiment of the present utility model. The difference between this embodiment and the second embodiment is that: the bottom end of the lifting block 35 is fixedly connected to an annular plate 6, the top end of the valve seat 11 is provided with an annular groove 4, and a sealing ring 5 is fixedly connected to the inner wall of the annular groove 4.

[0033] The annular plate 6 is fitted into the inner wall of the annular groove 4, and the bottom end of the annular plate 6 is in contact with the top surface of the sealing ring 5.

[0034] During use, when the lifting block 35 descends, the annular plate 6 descends with the lifting block 35 and precisely embeds into the inner wall of the annular groove 4, forming a physical barrier to block the lateral flow of hydrogen. The bottom end of the annular plate 6 presses against the sealing ring 5 to achieve airtightness. At the same time, combined with the fit between the rubber pad 36 and the groove of the valve seat 11, and the sealing plate 310 sealing the inlet of the valve seat 11, a three-level sealing system is formed, blocking the hydrogen leakage path layer by layer. This effectively prevents hydrogen leakage, allowing the device to maintain good sealing performance during long-term use and extending the effective service life of the device.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A variable cross-section hydrogen valve, comprising a valve body (1), characterized in that: The valve body (1) is provided with a valve seat (11) inside. A valve cover (2) is fixedly installed on the top of the valve body (1) by bolts. A sealing element (21) is fixedly installed inside the valve cover (2) by bolts. An adjustment mechanism (3) is provided above the valve cover (2). The valve cover (2) is fixedly connected to the top of the mounting bracket (31), the mounting bracket (31) is threaded to the inside of the threaded column (33), the top of the threaded column (33) is fixedly sleeved with a rotating wheel (32), the bottom of the threaded column (33) is fixedly sleeved with a lifting column (34), the bottom of the lifting column (34) passes through the inside of the seal (21) and is fixedly connected with a lifting block (35), the side wall of the lifting block (35) is fixedly sleeved with a rubber pad (36), the surface of the rubber pad (36) is in contact with the inner wall of the groove at the top of the valve seat (11), the bottom of the lifting block (35) is fixedly sleeved with an adjusting cylinder (37), and the surface of the adjusting cylinder (37) is provided with several air outlet grooves (38).

2. A variable cross-section hydrogen valve according to claim 1, characterized in that: The plurality of the air outlet grooves (38) are arranged in a spiral shape, and the inner width of the plurality of the air outlet grooves (38) gradually decreases from one end to the other.

3. A variable cross-section hydrogen valve according to claim 1, characterized in that: The valve body (1) has a sealing groove (12) on its inner wall, and a connecting rod (39) is fixedly connected to one side of the regulating cylinder (37).

4. A variable cross-section hydrogen valve according to claim 3, characterized in that: One end of the connecting rod (39) is fixedly connected to a sealing plate (310), and the sealing plate (310) is slidably connected to the inner wall of the sealing groove (12).

5. A variable cross-section hydrogen valve according to claim 1, characterized in that: The bottom end of the lifting block (35) is fixedly connected to an annular plate (6), and the top end of the valve seat (11) is provided with an annular groove (4), and the inner wall of the annular groove (4) is fixedly connected to a sealing ring (5).

6. A variable cross-section hydrogen valve according to claim 5, characterized in that: The annular plate (6) is fitted into the inner wall of the annular groove (4), and the bottom end of the annular plate (6) is in contact with the top surface of the sealing ring (5).

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