Liquid hydrogen stop valve

Abstract

The utility model relates to the technical field of stop valves, and discloses a liquid hydrogen stop valve, including a valve tube, both ends of the valve tube are fixedly connected with interfaces, the upper end face of the valve tube is fixedly connected with a valve port, the outer side wall of the valve port is provided with a plurality of constant temperature ports, the upper end face of the valve tube is fixedly connected with a valve cover, both sides of the upper end face of the valve tube are fixedly connected with support rods, the upper end faces of the two support rods are fixedly connected with a fixing frame, the upper end face of the fixing frame is penetrated with a valve stem, the lower end of the valve stem is penetrated with a fixing bolt, a limiting slider, a valve cover and a valve tube and is rotatably connected with a valve plate, the inner side wall of the valve tube is fixedly connected with a valve body, and the upper end face of the valve body is slidably connected with the limiting slider through a limiting block. The utility model liquid hydrogen stop valve has the function of enabling the device to dissipate the low temperature transmitted to the valve stem, and also has the function of sealing liquid hydrogen more tightly.

Description

Technical Field

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

[0002] A liquid hydrogen stop valve is a device that works in low-temperature gaseous hydrogen or liquid hydrogen media and is used to connect or cut off pipeline media. With the rapid development of my country's hydrogen energy industry, the demand for hydrogen energy is showing explosive growth. The current storage and transportation methods of high-pressure gaseous hydrogen will be difficult to meet the future application requirements of low cost and high convenience of hydrogen energy. The application of liquid hydrogen is ushering in a turning point, so a liquid hydrogen stop valve is needed in the application of liquid hydrogen to prevent the loss of liquid hydrogen.

[0003] Most of the existing liquid hydrogen stop valves, because the temperature of liquid hydrogen is low, the temperature is transmitted to the liquid hydrogen stop valve, so that when the liquid hydrogen stop valve is used, it often causes hand injuries to the user, and most of the existing liquid hydrogen stop valves do not completely cut off the liquid hydrogen, resulting in waste of liquid hydrogen. Therefore, those skilled in the art provide a liquid hydrogen stop valve to solve the problems raised in the above background technology. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a liquid hydrogen stop valve, which has the function of enabling the device to dissipate the low temperature transmitted to the valve stem and also has the function of sealing the liquid hydrogen more tightly.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A liquid hydrogen stop valve, comprising a valve pipe, both ends of the valve pipe are fixedly connected with interfaces, the upper end surface of the valve pipe is fixedly connected with a valve port, the outer side wall of the valve port is provided with a plurality of thermostatic ports, the upper end surface of the valve pipe is fixedly connected with a valve cover, both sides of the upper end surface of the valve pipe are fixedly connected with support rods, the upper end surfaces of the two support rods are fixedly connected with a fixing frame, and the upper end surface of the fixing frame is penetrated with a valve stem;

[0007] Through the above technical scheme, by arranging the valve stem, hand wheel, valve body, valve plate, limit slider and limit block, the device can drive the valve stem to slide up and down by turning the hand wheel, thereby driving the valve plate to be pressed down to the notch of the valve body to block the liquid hydrogen, and by fixing the limit slider and limit block on the valve stem, the valve stem is stabilized to prevent the pressure of liquid hydrogen from deflecting the valve plate, so that the device has a better effect in cutting off liquid hydrogen.

[0008] Furthermore, the lower end of the valve stem is penetrated by a fixing bolt, a limiting slider, a valve cover and a valve pipe and is rotatably connected to a valve plate;

[0009] Through the above technical solution, the valve stem can drive the valve plate.

[0010] Furthermore, the inner side wall of the valve tube is fixedly connected with a valve body, and the upper end surface of the valve body is slidably connected with a limiting slider via a limiting block;

[0011] Through the above technical solution, the valve plate is more stable when cutting off liquid hydrogen.

[0012] Furthermore, a plurality of temperature conducting blocks are fixedly connected to the inner side wall of the valve port, and a fan box is fixedly connected to a side of the inner side wall of the valve port away from the plurality of temperature conducting blocks;

[0013] Through the above technical solution, by setting the temperature conduction block, fan box, air guide port and constant temperature port, the fan box in the device conducts the outside air to the valve stem, so that the low temperature of the valve stem can be neutralized with the outside world, so that the staff will not get their hands injured when turning the valve stem.

[0014] Furthermore, a side of the fan box away from the temperature conducting block is fixedly connected with an air guide port;

[0015] Through the above technical solution, the outside air can be introduced by setting the air guide port.

[0016] Furthermore, a constant temperature port is fixedly connected to the outer side wall of the air guide port;

[0017] Through the above technical solution, the temperature of the valve stem can be neutralized by setting the constant temperature port.

[0018] Furthermore, a threaded opening is fixedly connected to the upper end of the inner side wall of the fixing frame, and a valve stem is threadedly connected to the inner side wall of the threaded opening;

[0019] Through the above technical solution, the valve stem is stabilized by setting the threaded opening.

[0020] Furthermore, a hand wheel is fixedly connected to the upper end of the valve stem;

[0021] Through the above technical solution, the valve stem can be rotated by setting a hand wheel.

[0022] The utility model has the following beneficial effects:

[0023] 1. The utility model proposes a liquid hydrogen stop valve, which is provided with a valve stem, a hand wheel, a valve body, a valve plate, a limit slider and a limit block, so that the device can drive the valve stem to slide up and down by rotating the hand wheel, thereby driving the valve plate to press down to the notch of the valve body to block the liquid hydrogen. The limit slider and the limit block are fixedly connected to the valve stem to stabilize the valve stem to prevent the pressure of the liquid hydrogen from distorting the valve plate, so that the device has a better effect on cutting off the liquid hydrogen.

[0024] 2. The utility model proposes a liquid hydrogen stop valve, which, by arranging a temperature conduction block, a fan box, an air guide port and a constant temperature port, enables the fan box in the device to conduct the outside air to the valve stem, so that the low temperature of the valve stem can be neutralized with the outside, thereby preventing the staff from getting their hands injured when turning the valve stem. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is an isometric view of a liquid hydrogen stop valve proposed by the utility model;

[0026] Figure 2 This is a front view of a liquid hydrogen stop valve proposed by the utility model;

[0027] Figure 3 This is a front cross-sectional view of a liquid hydrogen stop valve proposed by the utility model;

[0028] Figure 4 This is a schematic diagram of the stabilizing mechanism structure of a liquid hydrogen stop valve proposed by the utility model;

[0029] Figure 5 for Figure 3 Enlarged view of point A in the middle.

[0030] Legend:

[0031] 1. Valve pipe; 2. Interface; 3. Valve port; 4. Constant temperature port; 5. Valve cover; 6. Threaded port; 7. Fixing bolt; 8. Support rod; 9. Fixing bracket; 10. Valve stem; 11. Handwheel; 12. Valve body; 13. Valve plate; 14. Limit slider; 15. Limit block; 16. Temperature conduction block; 17. Fan box; 18. Air guide port. DETAILED DESCRIPTION

[0032] 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.

[0033] Reference Figure 1-5The utility model provides an embodiment: a liquid hydrogen stop valve, including a valve tube 1, both ends of the valve tube 1 are fixedly connected with interfaces 2, the upper end surface of the valve tube 1 is fixedly connected with a valve port 3, the outer wall of the valve port 3 is provided with a plurality of constant temperature ports 4, the upper end surface of the valve tube 1 is fixedly connected with a valve cover 5, both sides of the upper end surface of the valve tube 1 are fixedly connected with support rods 8, the upper end surfaces of the two support rods 8 are fixedly connected with a fixing frame 9, and the upper end surface of the fixing frame 9 is penetrated with a valve stem 10, by setting The valve stem 10, the hand wheel 11, the valve body 12, the valve plate 13, the limit slider 14 and the limit block 15 enable the device to drive the valve stem 10 to slide up and down by rotating the hand wheel 11, thereby driving the valve plate 13 to be pressed down to the notch of the valve body 12 to block the liquid hydrogen. The limit slider 14 and the limit block 15 are fixedly connected to the valve stem 10 to stabilize the valve stem 10 to prevent the pressure of the liquid hydrogen from deflecting the valve plate 13, so that the device has a better effect in cutting off the liquid hydrogen.

[0034] The lower end of the valve stem 10 is penetrated by a fixing bolt 7, a limit slider 14, a valve cover 5 and a valve tube 1 and is rotatably connected to a valve plate 13, so that the valve stem 10 can drive the valve plate 13, the inner side wall of the valve tube 1 is fixedly connected to a valve body 12, and the upper end surface of the valve body 12 is slidably connected to the limit slider 14 through a limit block 15, so that the valve plate 13 is more stable when cutting off liquid hydrogen, the inner side wall of the valve port 3 is fixedly connected to a plurality of temperature conducting blocks 16, and the inner side wall of the valve port 3 is fixedly connected to a fan box 17 on a side away from the plurality of temperature conducting blocks 16. By arranging the temperature conducting block 16, the fan box 17, the air guide port 18 and the constant temperature port 4, the fan box 17 in the device conducts the outside air to the valve stem 10, so that the valve The low temperature of the rod 10 can be neutralized with the outside world, so that the staff will not get their hands injured when turning the valve stem 10. The fan box 17 is fixedly connected to an air guide port 18 on the side away from the temperature conduction block 16. By setting the air guide port 18, outside air can be introduced. The outer wall of the air guide port 18 is fixedly connected to a constant temperature port 4. By setting the constant temperature port 4, the temperature of the valve stem 10 can be neutralized. The upper end of the inner wall of the fixed frame 9 is fixedly connected to a threaded port 6. The inner wall of the threaded port 6 is threadedly connected to the valve stem 10. By setting the threaded port 6, the valve stem 10 is stabilized. The upper end of the valve stem 10 is fixedly connected to a hand wheel 11. By setting the hand wheel 11, the valve stem 10 can be rotated.

[0035] Working principle: When the device is used, the hand wheel 11 is turned to drive the valve stem 10 to slide up and down, thereby driving the valve plate 13 to press down to the notch of the valve body 12 to block the liquid hydrogen. The valve stem 10 is fixedly connected with a limit slider 14 and a limit block 15 to stabilize the valve stem 10 to prevent the pressure of liquid hydrogen from deflecting the valve plate 13, so that the device can better cut off the liquid hydrogen. The fan box 17 in the device conducts the outside air to the valve stem 10, so that the low temperature of the valve stem 10 can be neutralized with the outside, so that the staff will not get their hands injured when turning the valve stem 10.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A liquid hydrogen stop valve, comprising a valve tube (1), characterized in that: Both ends of the valve tube (1) are fixedly connected with interfaces (2), the upper end surface of the valve tube (1) is fixedly connected with a valve port (3), the outer wall of the valve port (3) is provided with a plurality of constant temperature ports (4), the upper end surface of the valve tube (1) is fixedly connected with a valve cover (5), both sides of the upper end surface of the valve tube (1) are fixedly connected with support rods (8), the upper end surfaces of the two support rods (8) are fixedly connected with fixing frames (9), and the upper end surface of the fixing frame (9) is penetrated by a valve stem (10).

2. A liquid hydrogen stop valve according to claim 1, characterized in that: The lower end of the valve stem (10) is penetrated by a fixing bolt (7), a limiting slider (14), a valve cover (5) and a valve pipe (1), and is rotatably connected to a valve plate (13).

3. A liquid hydrogen stop valve according to claim 1, characterized in that: The inner side wall of the valve tube (1) is fixedly connected to a valve body (12), and the upper end surface of the valve body (12) is slidably connected to a limit slider (14) via a limit block (15).

4. A liquid hydrogen stop valve according to claim 1, characterized in that: The inner side wall of the valve port (3) is fixedly connected to a plurality of temperature conducting blocks (16), and the inner side wall of the valve port (3) is fixedly connected to a fan box (17) on a side away from the plurality of temperature conducting blocks (16).

5. A liquid hydrogen stop valve according to claim 4, characterized in that: An air guide port (18) is fixedly connected to a side of the fan box (17) away from the temperature conducting block (16).

6. A liquid hydrogen stop valve according to claim 5, characterized in that: The outer side wall of the air guide port (18) is fixedly connected with a constant temperature port (4).

7. The liquid hydrogen stop valve according to claim 1, characterized in that: A threaded opening (6) is fixedly connected to the upper end of the inner side wall of the fixing frame (9), and a valve stem (10) is threadedly connected to the inner side wall of the threaded opening (6).

8. The liquid hydrogen stop valve according to claim 1, characterized in that: The upper end of the valve stem (10) is fixedly connected to a hand wheel (11).

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