Novel low-pressure hydrogen integrated cylinder valve for fuel cell
By designing a new low-pressure hydrogen integrated bottle valve, the combination of spring and blocking block is used to achieve automated operation during filling and exhaust, solving the problem that traditional valves cannot guarantee complete sealing and ensuring safe sealing of hydrogen.
Patent Information
- Application Number
- CN202421331305.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-12
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-06-12
AI Technical Summary
Traditional gas storage cylinder valves cannot guarantee complete sealing, which can easily cause hydrogen leakage and cause fires.
A new low-pressure hydrogen integrated bottle valve is designed, which adopts a combination of the valve body, the first spring, the plug, the air intake pipe and the upper gear ring to achieve automatic opening and closing during filling and exhaust to prevent hydrogen leakage.
Automatic operation during filling and exhaust is achieved to ensure that hydrogen is sealed in the cylinder and avoid the risk of hydrogen leakage and fire.
Smart Images
Figure CN222437125U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of valves, in particular to a novel low-pressure hydrogen integrated bottle valve for fuel cells. Background Art
[0002] In recent years, the imbalance of global energy distribution and the pollution of fossil energy have become more and more topics of public concern. As social contradictions become increasingly serious, the development of clean energy has become one of the key industries invested by various countries. As a widely recognized clean energy: hydrogen energy has three core advantages. First, it has a wide range of sources, which means that all countries have sufficient raw materials for hydrogen production; second, it can be stored, which is its biggest advantage in competing with electricity; third, it is clean to use, so it will also solve the pollution problem in society. The use of hydrogen fuel cell vehicles is the same as that of traditional vehicles, and will not increase the tension of resources for society.
[0003] Hydrogen storage cylinders have become the key to hydrogen storage technology, but the valves of traditional storage cylinders are opened and closed manually. Manually closing the valves after filling is completed cannot ensure complete sealing, which can easily cause hydrogen leakage and cause fire. Utility Model Content
[0004] The utility model aims to solve the shortcomings in the prior art and proposes a novel low-pressure hydrogen integrated bottle valve for fuel cells.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a novel low-pressure hydrogen integrated bottle valve for fuel cells, comprising a valve body, the outer wall of the valve body is fixedly connected to an air inlet pipe, a sealing assembly is installed inside the valve body, a push rod for opening the sealing assembly is movably installed on the top of the valve body, a push block is fixedly connected to the top of the push rod, and a limit assembly for limiting the position of the push rod is installed between the push rod and the valve body;
[0006] The sealing assembly includes a lower retaining ring, a first spring, a blocking block and an upper retaining ring, the lower retaining ring is fixedly connected to the inner wall of the valve body, the first spring is installed on the top of the lower retaining ring, the blocking block is installed on the top of the first spring, and the upper retaining ring is fixedly connected to the inner wall of the valve body and is located on the top of the blocking block.
[0007] Further: the limit assembly includes an installation groove, a second spring, a limit rod, a movable groove, a slide groove, a sliding rod and a shift block. The installation groove is opened inside the push rod, the second spring is installed inside the installation groove, the limit rod is installed at one end of the second spring, the movable groove is opened inside the valve body and is located on the side close to the push rod, the slide groove has two openings inside the valve body and located at the front end of the movable groove, the sliding rod is slidably installed inside the slide groove, the shift block is movably installed at the front end of the slide groove, the two ends of the shift block are located at the front end of the sliding rod, and magnets are fixedly installed at the connection between the shift block and the sliding rod.
[0008] Further: a sealing ring is installed between the push rod and the valve body.
[0009] Further: the bottom of the outer wall of the valve body is provided with threads.
[0010] Further: the outer wall of the valve body and one end away from the air inlet pipe is fixedly connected to a mounting block, and a pressure detector is fixedly installed inside the mounting block.
[0011] The utility model has the following beneficial effects:
[0012] 1. Compared with the prior art, by arranging the valve body, the first spring, the block, the air inlet pipe and the upper baffle ring, when injecting gas, the gas enters the valve body from the air inlet pipe, and then moves downward from the top of the block to push the block downward, and then the gas can pass through the upper baffle ring into the gas cylinder. When the gas injection is stopped, the block has no downward thrust, and is pushed upward by the first spring to be stuck at the bottom of the upper baffle ring, while the high-pressure gas in the gas cylinder cannot move the block downward from the bottom, so the gas can be sealed in the gas cylinder, and the valve can be automatically opened when filling the gas, and the valve can be automatically closed after the filling is completed, so as to prevent gas leakage from causing a fire.
[0013] 2. Compared with the prior art, by arranging the first spring, the blocking block, the push rod, the push block, the limit rod, the movable groove, the slide groove, the slide rod and the dial block, when it is necessary to exhaust the gas, the dial block is first pushed upward to make the top slide rod move inward, and at the same time the bottom slide rod moves outward through the magnet. When the top slide rod moves inward, the limit rod is pushed into the movable groove, and then the push block is pressed downward, which drives the limit rod to move downward and get stuck in the slide groove at the bottom. At this time, the push rod also pushes the blocking block downward to exhaust. When it is necessary to stop exhausting, the dial block is pushed downward to make the limit rod in the slide groove move to the movable groove. At this time, the push rod is no longer fixed by the limit rod, and the blocking block is no longer fixed by the push rod. The first spring pushes the blocking block and the push rod upward together and returns to the initial position, so that the valve can be opened very conveniently when exhausting. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the structure of the utility model from a first perspective;
[0015] Figure 2 This is a schematic diagram of the structure of the utility model from a second viewing angle;
[0016] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;
[0017] Figure 4 for Figure 3 Enlarged structural diagram at A in the middle.
[0018] Legend:
[0019] 1. Valve body; 2. Thread; 3. Lower retaining ring; 4. First spring; 5. Block; 6. Air inlet; 7. Upper retaining ring; 8. Push rod; 9. Push block; 10. Sealing ring; 11. Mounting groove; 12. Second spring; 13. Limit rod; 14. Moving groove; 15. Slide groove; 16. Slide rod; 17. Dial block; 18. Mounting block; 19. Pressure detector. DETAILED DESCRIPTION
[0020] Reference Figure 1-4 The utility model provides a new type of low-pressure hydrogen integrated bottle valve for fuel cells: it includes a valve body 1, an air inlet pipe 6 is fixedly connected to the outer wall of the valve body 1, a sealing component is installed inside the valve body 1, a push rod 8 for opening the sealing component is movably installed on the top of the valve body 1, a push block 9 is fixedly connected to the top of the push rod 8, and a limit assembly for limiting the position of the push rod 8 is installed between the push rod 8 and the valve body 1.
[0021] First, install the valve body 1 on the gas cylinder. When gas needs to be filled, add gas from the air inlet pipe 6. When the gas enters the interior of the valve body 1, the gas pushes the sealing component open and then enters the gas cylinder. After the gas filling is completed, the gas is turned off and the sealing component is closed at the same time. When the gas needs to be discharged, the limit component is opened, and then the push rod 8 is pushed downward by the push block 9 to open the sealing component and the gas in the gas cylinder can be discharged.
[0022] The sealing assembly comprises a lower retaining ring 3, a first spring 4, a blocking block 5 and an upper retaining ring 7. The lower retaining ring 3 is fixedly connected to the inner wall of the valve body 1, the first spring 4 is installed on the top of the lower retaining ring 3, the blocking block 5 is installed on the top of the first spring 4, and the upper retaining ring 7 is fixedly connected to the inner wall of the valve body 1 and is located at the top of the blocking block 5. Under normal circumstances, the blocking block 5 is pushed upward by the first spring 4 and stuck at the bottom of the upper retaining ring 7, which can play a sealing role. When injecting gas, the gas moves downward from the top of the blocking block 5, pushing the blocking block 5 downward, and then the gas can enter the gas cylinder through the upper retaining ring 7. When the gas injection is stopped, the blocking block 5 has no downward thrust and is pushed upward by the first spring 4 and stuck at the bottom of the upper retaining ring 7. The high-pressure gas in the gas cylinder cannot move the blocking block 5 downward from the bottom, so the gas can be sealed in the gas cylinder. When exhaust is needed, the push rod 8 moves downward to push the blocking block 5 downward, and the gas can be discharged.
[0023] The limiting assembly includes a mounting groove 11, a second spring 12, a limiting rod 13, a movable groove 14, a slide groove 15, a slide rod 16 and a dial block 17. The mounting groove 11 is arranged inside the push rod 8, the second spring 12 is arranged inside the mounting groove 11, the limiting rod 13 is arranged at one end of the second spring 12, the movable groove 14 is arranged inside the valve body 1 and is located on a side close to the push rod 8, the slide groove 15 has two openings inside the valve body 1 and located at the front end of the movable groove 14, the slide rod 16 is slidably arranged inside the slide groove 15, the dial block 17 is movably arranged at the front end of the slide groove 15, the two ends of the dial block 17 are located at the front end of the slide rod 16, and magnets are fixedly arranged at the connection between the dial block 17 and the slide rod 16. When the blocking block 5 is closed, the limiting rod 13 inside the push rod 8 is in the position When the push rod 8 needs to be pushed downward in the top slide groove 15, the shift block 17 is first pushed upward to make the top slide bar 16 move inward, and the bottom slide bar 16 moves outward through the magnet. When the top slide bar 16 moves inward, the limit rod 13 is pushed into the movable groove 14, and then the push block 9 is pressed downward, and the limit rod 13 is driven to move downward and get into the bottom slide groove 15. At this time, the push rod 8 also pushes the blocking block 5 downward to exhaust. When the exhaust needs to be stopped, the shift block 17 is pushed downward to make the limit rod 13 in the slide groove 15 move to the movable groove 14. At this time, the push rod 8 is no longer fixed by the limit rod 13, and the blocking block 5 is no longer fixed by the push rod 8. The first spring 4 pushes the blocking block 5 and the push rod 8 upward together to return to the initial position.
[0024] A sealing ring 10 is installed between the push rod 8 and the valve body 1. When the push rod 8 moves, the sealing ring 10 can play a sealing role to prevent gas from leaking to the outside.
[0025] The bottom of the outer wall of the valve body 1 is provided with a thread 2. When in use, the valve body 1 can be installed on a gas cylinder through the thread 2 at the bottom of the valve body 1.
[0026] The outer wall of the valve body 1 and one end away from the air inlet pipe 6 is fixedly connected to the mounting block 18, and a pressure detector 19 is fixedly installed inside the mounting block 18. When in use, the pressure detector 19 can detect the gas pressure in the gas cylinder.
[0027] Working principle: First, the thread 2 at the bottom of the valve body 1 is installed on the gas cylinder. When gas needs to be injected, the gas enters the valve body 1 from the air inlet pipe 6, and then moves downward from the top of the block 5 to push the block 5 downward. Then the gas can pass through the upper retaining ring 7 and enter the gas cylinder. When the gas injection stops, the block 5 has no downward thrust and is pushed upward by the first spring 4 to be stuck at the bottom of the upper retaining ring 7. The high-pressure gas in the gas cylinder cannot move the block 5 downward from the bottom, so the gas can be sealed in the gas cylinder. When the gas needs to be discharged, first push the dial block 17 upward to move the top slide bar 16 inward, and at the same time When the push rod 8 is in the state of being exhausted, the limit rod 13 in the slide groove 15 is pushed upwards to return to the original position.
[0028] 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 novel low-pressure hydrogen integrated bottle valve for fuel cells, comprising a valve body (1), characterized in that: The outer wall of the valve body (1) is fixedly connected to an air inlet pipe (6), a sealing assembly is installed inside the valve body (1), a push rod (8) for opening the sealing assembly is movably installed on the top of the valve body (1), a push block (9) is fixedly connected to the top of the push rod (8), and a limit assembly for limiting the position of the push rod (8) is installed between the push rod (8) and the valve body (1); The sealing assembly comprises a lower retaining ring (3), a first spring (4), a blocking block (5) and an upper retaining ring (7); the lower retaining ring (3) is fixedly connected to the inner wall of the valve body (1); the first spring (4) is installed on the top of the lower retaining ring (3); the blocking block (5) is installed on the top of the first spring (4); and the upper retaining ring (7) is fixedly connected to the inner wall of the valve body (1) and is located on the top of the blocking block (5).
2. According to claim 1, a new type of low-pressure hydrogen integrated bottle valve for fuel cells is characterized in that: The limiting assembly comprises a mounting groove (11), a second spring (12), a limiting rod (13), a movable groove (14), a slide groove (15), a slide rod (16) and a shifting block (17); the mounting groove (11) is arranged inside the push rod (8); the second spring (12) is arranged inside the mounting groove (11); the limiting rod (13) is arranged on one end of the second spring (12); the movable groove (14) is arranged inside the valve body (1) and is located on a side close to the push rod (8); the slide groove (15) has two ends which are arranged inside the valve body (1) and are located at the front end of the movable groove (14); the slide rod (16) is slidably arranged inside the slide groove (15); the shifting block (17) is movably arranged at the front end of the slide groove (15); the two ends of the shifting block (17) are located at the front end of the slide rod (16); and magnets are fixedly arranged at the connection between the shifting block (17) and the slide rod (16).
3. According to claim 1, a new type of low-pressure hydrogen integrated bottle valve for fuel cells is characterized in that: A sealing ring (10) is installed between the push rod (8) and the valve body (1).
4. According to claim 1, a new type of low-pressure hydrogen integrated bottle valve for fuel cells is characterized in that: The bottom of the outer wall of the valve body (1) is provided with a thread (2).
5. According to claim 1, a new type of low-pressure hydrogen integrated bottle valve for fuel cells is characterized in that: An outer wall of the valve body (1) and one end away from the air inlet pipe (6) is fixedly connected to a mounting block (18), and a pressure detector (19) is fixedly installed inside the mounting block (18).