CN210800171U - Flow limiting valve in bottleneck valve - Google Patents
Flow limiting valve in bottleneck valve Download PDFInfo
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- CN210800171U CN210800171U CN201921517240.3U CN201921517240U CN210800171U CN 210800171 U CN210800171 U CN 210800171U CN 201921517240 U CN201921517240 U CN 201921517240U CN 210800171 U CN210800171 U CN 210800171U
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Abstract
The utility model discloses a flow limiting valve in a bottleneck valve, wherein a second channel, a third channel and a fourth channel are sequentially arranged in a valve body from top to bottom, and the inner pore diameters of the channels are sequentially reduced to form a step pore structure; the sliding valve core is movably inserted in the second channel and the third channel, a convex ring at the top of the sliding valve core is movably arranged in the second channel, and the connecting sleeve is fixed in the top of the second channel; two ends of a spring sleeved on the sliding valve core respectively abut against the convex ring and a step table surface formed between the second channel and the third channel; the top of the sliding valve core is provided with a first gas flow channel, the bottom of the sliding valve core is provided with a second gas flow channel, the first gas flow channel and the second gas flow channel are communicated through a middle throttling hole, a plurality of first through holes are arranged on the side wall of the upper section of the sliding valve core at intervals, and a plurality of second through holes are arranged on the side wall of the lower section of the sliding valve core at intervals. The structure is simple and compact, the processing and the assembly are convenient, the weight is light, the volume is small, the cost is low, and the safety performance is good.
Description
Technical Field
The utility model relates to a hydrogen storage technology field especially relates to a restriction valve in bottleneck valve.
Background
The hydrogen storage mode adopts the high-pressure hydrogen storage of the hydrogen storage cylinder, the high-pressure hydrogen in the hydrogen storage cylinder can be reasonably and effectively used without opening the bottleneck valve, and the high-pressure hydrogen in the hydrogen storage cylinder can be provided for the fuel cell after being processed by the bottleneck valve and a subsequent system, so the bottleneck valve is an important part in the hydrogen supply system, and the performance of the bottleneck valve directly influences the normal work of the fuel cell, the use efficiency of the hydrogen supply system and the safety performance of the hydrogen supply system. The current common flow limiting valve in the bottleneck valve in the market has the disadvantages of complex structure, complex processing technology and high production cost.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that needs to solve is: the flow limiting valve in the bottleneck valve is simple and compact in structure, convenient to machine and assemble, flexible and reliable.
In order to solve the above problem, the utility model adopts the following technical scheme: the flow limiting valve in the bottleneck valve comprises: the valve body is provided with a second channel, a third channel and a fourth channel in sequence from top to bottom in the middle of the top surface of the valve body, and the inner apertures of the second channel, the third channel and the fourth channel are reduced in sequence to form a step hole structure; the sliding valve core is movably inserted in the second channel and the third channel, a convex ring which protrudes outwards is arranged at the top of the sliding valve core, the convex ring is movably arranged in the second channel, and the connecting sleeve is fixed in the top of the second channel; a spring is sleeved on the sliding valve core, the bottom end of the spring abuts against a step surface formed between the second channel and the third channel, and the top end of the spring abuts against the bottom surface of the convex ring to enable the top surface of the convex ring to abut against the connecting sleeve; a first gas flow channel is inwards arranged in the middle of the top surface of the sliding valve core, a second gas flow channel is inwards arranged in the middle of the bottom surface of the sliding valve core, the first gas flow channel is communicated with the second gas flow channel through a middle throttling hole, a plurality of first through holes communicated with the first gas flow channel are arranged on the side wall of the upper section of the sliding valve core at intervals, and a plurality of second through holes communicated with the second gas flow channel are arranged on the side wall of the lower section of the sliding valve core at intervals; when the sliding valve core moves downwards until the bottom surface of the sliding valve core abuts against a step table surface formed between the third channel and the fourth channel, each second through hole on the sliding valve core is positioned in the third channel, and gas flows out of the first channel through the connecting sleeve, the first gas channel, the middle throttling hole and the second gas channel; when the slide valve core is only under the action of the elastic force of the spring, the top surface of the lower flange is abutted against the connecting sleeve under the action of the spring, each first through hole and each second through hole are positioned in the second channel, and gas passes through the connecting sleeve and the first gas flow channel and then is divided into two paths: one path is collected in the second gas flow channel through the middle throttling hole, the other path is collected in the second gas flow channel through the first through hole, the interlayer gap between the sliding valve core and the second channel and the second through hole, and then the gas flows out of the second gas flow channel and the first channel in a unified mode.
Further, the flow limiting valve in the bottleneck valve is characterized in that a first channel is formed in the top of the second channel, the inner aperture of the first channel is larger than that of the second channel, and the connecting sleeve is fixed in the first channel.
Further, in the flow limiting valve in the bottleneck valve, an inner hole of the connecting sleeve is a prism-shaped hole.
Further, the flow limiting valve in the bottleneck valve is characterized in that the valve body is formed by integrally forming a first cylinder, a second cylinder and a third cylinder from top to bottom in sequence, the outer diameters of the first cylinder, the second cylinder and the third cylinder are reduced in sequence to form a step shaft structure, and the flow limiting valve can be installed in the bottleneck valve through the third cylinder; a plurality of platforms are cut on the first column body at intervals along the circumferential direction.
Further, the flow limiting valve in the bottleneck valve is provided with an external thread section on the third cylinder.
Furthermore, in the flow limiting valve in the bottleneck valve, four first through holes communicated with the first gas flow channel are uniformly arranged on the side wall of the upper section of the sliding valve core at intervals along the circumferential direction of the sliding valve core, and the axes of the four first through holes are positioned on the same horizontal plane; four second through holes communicated with the second gas flow channel are uniformly arranged on the side wall of the lower section of the sliding valve core at intervals along the circumferential direction of the sliding valve core, and the axes of the four second through holes are positioned on the same horizontal plane.
The utility model has the advantages that: the flow limiting valve has the advantages of simple and compact structure, convenient processing and assembly, light weight, small volume, low cost, flexibility and reliability in use and good safety performance.
Drawings
Fig. 1 is a schematic structural diagram of a flow limiting valve in a bottle mouth valve of the present invention.
Fig. 2 is a schematic view of the internal structure of the flow restriction valve.
Fig. 3 is a schematic structural view of the spool of fig. 2.
Fig. 4 is a schematic view of the internal structure of the flow restriction valve in another operation state.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and preferred embodiments.
As shown in fig. 1, 2 and 3, the structure of the flow restriction valve described in this embodiment includes: the valve body 1 is provided with a first channel 11, a second channel 12, a third channel 13 and a fourth channel 14 from top to bottom in sequence in the middle of the top surface of the valve body 1, and the inner apertures of the first channel 11, the second channel 12, the third channel 13 and the fourth channel 14 are reduced in sequence to form a step hole structure. The sliding valve core 2 is movably inserted in the second channel 12 and the third channel 13, a convex ring 21 protruding outwards is arranged at the top of the sliding valve core 2, the convex ring 21 is movably arranged in the second channel 12, and the connecting sleeve 3 is fixed in the first channel 11. In this embodiment, an inner hole of the connecting sleeve 3 is a prismatic hole, and the prismatic hole is convenient for an operator to rotate the connecting sleeve 3, so that the connecting sleeve 3 is fixed in the first channel 11.
As shown in fig. 2 and 3, the sliding valve core 2 is sleeved with a spring 4, the bottom end of the spring 4 abuts against a step surface formed between the second channel 12 and the third channel 13, and the top end of the spring 4 abuts against the bottom surface of the convex ring 21, so that the top surface of the convex ring 21 abuts against the connecting sleeve 3. A first gas flow passage 22 is formed in the middle of the top surface of the sliding valve core 2 in an inward mode, a second gas flow passage 23 is formed in the middle of the bottom surface of the sliding valve core 2 in an inward mode, and the first gas flow passage 22 is communicated with the second gas flow passage 23 through a middle throttling hole 24. A plurality of first through holes 25 communicated with the first gas flow passage 22 are arranged on the side wall of the upper section of the slide valve core 2 at intervals, and a plurality of second through holes 26 communicated with the second gas flow passage 23 are arranged on the side wall of the lower section of the slide valve core 2 at intervals. When the slide valve core 2 moves downwards until the bottom surface of the slide valve core 2 abuts against a step surface formed between the third channel 13 and the fourth channel 14, each second through hole 26 on the slide valve core 2 is positioned in the third channel 13, and at the moment, gas flows out of the fourth channel 14 through the connecting sleeve 3, the first gas flow channel 22, the middle throttling hole 24 and the second gas flow channel 23. When the sliding valve core 2 is only acted by the elastic force of the spring 4, the top surface of the convex ring 21 is abutted against the connecting sleeve 3 under the action of the spring 4, each first through hole 25 and each second through hole 26 are positioned in the second channel 12, as shown in fig. 4, the gas is divided into two paths after passing through the connecting sleeve 3 and the first gas flow channel 22: one of the two flows is collected in the second gas flow passage 23 through the intermediate throttle hole 24, and the other flow is collected in the second gas flow passage 23 through the first through hole 25, the gap between the spool 2 and the second passage 12, and the second through hole 26, and then flows out of the second gas flow passage 23 and the fourth passage 14 in a unified manner.
In the embodiment, four first through holes 25 communicated with the first gas flow passage 22 are uniformly arranged on the side wall of the upper section of the sliding valve core 2 at intervals along the circumferential direction of the sliding valve core 2, and the axes of the four first through holes 25 are positioned on the same horizontal plane; the side wall of the lower section of the slide valve core 2 is provided with four second through holes 26 which are communicated with the second gas flow channel 23 at equal intervals along the circumferential direction of the slide valve core 2, and the description is given by taking an example that the axes of the four second through holes 26 are located on the same horizontal plane.
As shown in fig. 1, in this embodiment, the flow-limiting valve body 1 is formed by integrally molding a first cylinder 15, a second cylinder 16, and a third cylinder 17 in sequence from top to bottom, the outer diameters of the first cylinder 15, the second cylinder 16, and the third cylinder 17 are sequentially reduced to form a step shaft structure, and the flow-limiting valve is installed in the bottleneck valve through the third cylinder 17. In the present embodiment, an external thread section 18 is provided on the third column 17, and the flow restriction valve is screwed in the connection port of the bottle mouth valve through the external thread section 18. A plurality of platforms 19 are cut on the first column body 15 at intervals along the circumferential direction, and the arrangement of each platform 19 is convenient for an operator to screw the flow limiting valve in a connecting port of the bottle mouth valve.
Under the normal condition of the gas pressure of the hydrogen storage cylinder, the elastic force applied by the spring 4 to the sliding valve core 2 is balanced with the gas pressure protection, and the sliding valve core 2 keeps an unblocked state, namely: the gas is divided into two paths after passing through the connecting sleeve 3 and the first gas flow passage 22: one of the two flows is collected in the second gas flow passage 23 through the intermediate throttle hole 24, and the other flow is collected in the second gas flow passage 23 through the first through hole 25, the gap between the spool 2 and the second passage 12, and the second through hole 26, and then flows out of the second gas flow passage 23 and the fourth passage 14 in a unified manner.
When an uncontrollable accident occurs, if a large amount of gas in the hydrogen storage cylinder is caused to flow out if an external device of the hydrogen storage cylinder is damaged, the gas pressure exceeds the elastic force exerted by the spring 4 on the sliding valve core 2, the sliding valve core 2 overcomes the elastic force of the spring 4 to move downwards under the action of the gas pressure, the spring 4 is compressed until each second through hole 25 on the sliding valve core 2 is positioned in the third channel 13, at the moment, the path of the gas flowing out from the fourth channel 14 after passing through the connecting sleeve 3 and the first gas channel 22 and then through the first through hole 25, the interlayer gap between the sliding valve core 2 and the second channel 12, the second through hole 26 and the second gas channel 23 is blocked, so that the gas is prevented from flowing out abnormally. And the gas flows out normally through the connecting sleeve 3, the first gas flow passage 22, the middle throttling hole 24, the second gas flow passage 23 and the fourth passage 14, so that a small amount of gas is ensured to flow out.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any modifications or equivalent changes made in accordance with the technical spirit of the present invention are also within the scope of the present invention.
The utility model has the advantages that: the flow limiting valve with the structure has the advantages of simple and compact structure, convenience in processing and assembling, light weight, small volume, low cost, flexibility and reliability in use and good safety performance.
Claims (6)
1. A flow restriction valve in a bottleneck valve comprising: the valve body, its characterized in that: a second channel, a third channel and a fourth channel are sequentially arranged in the middle of the top surface of the valve body from top to bottom, and the inner apertures of the second channel, the third channel and the fourth channel are sequentially reduced to form a step hole structure; the sliding valve core is movably inserted in the second channel and the third channel, a convex ring which protrudes outwards is arranged at the top of the sliding valve core, the convex ring is movably arranged in the second channel, and the connecting sleeve is fixed in the top of the second channel; a spring is sleeved on the sliding valve core, the bottom end of the spring abuts against a step surface formed between the second channel and the third channel, and the top end of the spring abuts against the bottom surface of the convex ring to enable the top surface of the convex ring to abut against the connecting sleeve; a first gas flow channel is inwards arranged in the middle of the top surface of the sliding valve core, a second gas flow channel is inwards arranged in the middle of the bottom surface of the sliding valve core, the first gas flow channel is communicated with the second gas flow channel through a middle throttling hole, a plurality of first through holes communicated with the first gas flow channel are arranged on the side wall of the upper section of the sliding valve core at intervals, and a plurality of second through holes communicated with the second gas flow channel are arranged on the side wall of the lower section of the sliding valve core at intervals; when the sliding valve core moves downwards until the bottom surface of the sliding valve core abuts against a step table surface formed between the third channel and the fourth channel, each second through hole on the sliding valve core is positioned in the third channel, and gas flows out of the fourth channel through the connecting sleeve, the first gas flow channel, the middle throttling hole and the second gas flow channel; when the slide valve core is only under the action of the elastic force of the spring, the top surface of the lower flange is abutted against the connecting sleeve under the action of the spring, each first through hole and each second through hole are positioned in the second channel, and gas passes through the connecting sleeve and the first gas flow channel and then is divided into two paths: one path is collected in the second gas flow channel through the middle throttling hole, the other path is collected in the second gas flow channel through the first through hole, the interlayer gap between the sliding valve core and the second channel and the second through hole, and then the gas flows out of the second gas flow channel and the fourth channel in a unified mode.
2. The constrictor valve of the bottleneck valve of claim 1, wherein: a first channel is formed in the top of the second channel, the inner aperture of the first channel is larger than that of the second channel, and the connecting sleeve is fixed in the first channel.
3. The flow restriction valve in a bottleneck valve according to claim 1 or 2, wherein: the inner hole of the connecting sleeve is a prismatic hole.
4. The constrictor valve of the bottleneck valve of claim 1, wherein: the valve body is formed by integrally molding a first cylinder, a second cylinder and a third cylinder from top to bottom in sequence, the outer diameters of the first cylinder, the second cylinder and the third cylinder are reduced in sequence to form a step shaft structure, and the flow limiting valve can be installed in the bottleneck valve through the third cylinder; a plurality of platforms are cut on the first column body at intervals along the circumferential direction.
5. The constrictor valve of the bottleneck valve of claim 4, wherein: an external thread section is arranged on the third cylinder.
6. The constrictor valve of the bottleneck valve of claim 1, wherein: four first through holes communicated with the first gas flow passage are uniformly arranged on the side wall of the upper section of the sliding valve core at intervals along the circumferential direction of the sliding valve core, and the axes of the four first through holes are positioned on the same horizontal plane; four second through holes communicated with the second gas flow channel are uniformly arranged on the side wall of the lower section of the sliding valve core at intervals along the circumferential direction of the sliding valve core, and the axes of the four second through holes are positioned on the same horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921517240.3U CN210800171U (en) | 2019-09-12 | 2019-09-12 | Flow limiting valve in bottleneck valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921517240.3U CN210800171U (en) | 2019-09-12 | 2019-09-12 | Flow limiting valve in bottleneck valve |
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| Publication Number | Publication Date |
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| CN210800171U true CN210800171U (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921517240.3U Active CN210800171U (en) | 2019-09-12 | 2019-09-12 | Flow limiting valve in bottleneck valve |
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| CN (1) | CN210800171U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630794A (en) * | 2019-09-12 | 2019-12-31 | 张家港氢云新能源研究院有限公司 | Flow limiting valve in bottleneck valve |
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2019
- 2019-09-12 CN CN201921517240.3U patent/CN210800171U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630794A (en) * | 2019-09-12 | 2019-12-31 | 张家港氢云新能源研究院有限公司 | Flow limiting valve in bottleneck valve |
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Address after: 215600 Zhangjiagang hydrogen cloud New Energy Research Institute Co., Ltd., No.19, Fuxin (Chenxin) road, yangshe Town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee after: ZHANGJIAGANG QINGYUN NEW ENERGY RESEARCH INSTITUTE Co.,Ltd. Patentee after: Jiangsu Guofu hydrogen energy technology equipment Co.,Ltd. Address before: 215600 Zhangjiagang hydrogen cloud New Energy Research Institute Co., Ltd., No.19, Fuxin (Chenxin) road, yangshe Town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee before: ZHANGJIAGANG QINGYUN NEW ENERGY RESEARCH INSTITUTE Co.,Ltd. Patentee before: Jiangsu Guofu Hydrogen Energy Technology Equipment Co.,Ltd. |