CN209892796U - Highly integrated high-pressure hydrogen cylinder mouth valve - Google Patents
Highly integrated high-pressure hydrogen cylinder mouth valve Download PDFInfo
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- CN209892796U CN209892796U CN201920253950.3U CN201920253950U CN209892796U CN 209892796 U CN209892796 U CN 209892796U CN 201920253950 U CN201920253950 U CN 201920253950U CN 209892796 U CN209892796 U CN 209892796U
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Abstract
The utility model discloses a highly integrated high pressure hydrogen gas bottleneck valve, include: the main valve body is provided with a connecting column body, a first flow passage and a second flow passage which are independent are arranged in the main valve body, one end of the first flow passage forms a first air inlet on the surface of the main valve body, and the other end of the first flow passage forms a first air outlet on the bottom surface of the connecting column body; one end of the second flow passage forms a second air inlet on the bottom surface of the connecting column body, and the other end forms a second air outlet on the surface of the main valve body; a first filter and a one-way valve are sequentially arranged on the first flow channel from the first air inlet to the first air outlet; and a flow limiting valve, a second filter, an electromagnetic valve, a manual cut-off valve and a pressure reducing valve are sequentially arranged on the second flow passage from the second air inlet to the second air outlet, and the pressure reducing valve is integrated on the main valve body. The integral bottle mouth valve is simpler and more compact, the pipeline layout is convenient, the hydrogen leakage risk can be reduced, and the safety and reliability of the bottle mouth valve are improved.
Description
Technical Field
The utility model relates to a store up hydrogen technical field, especially relate to a highly integrated high pressure hydrogen cylinder mouth valve.
Background
Hydrogen energy is considered as an important secondary energy in the twenty-first century, has the advantages of abundant resources, high combustion value, cleanness, renewability and the like, and with the rapid development of fuel cell and battery automobile technologies, a safe and efficient hydrogen storage technology becomes the key of hydrogen energy application.
At present, the hydrogen storage mode adopts a hydrogen storage cylinder to store hydrogen under high pressure, the high-pressure hydrogen in the hydrogen storage cylinder can be reasonably and effectively used without opening a bottleneck valve, and the high-pressure hydrogen in the hydrogen storage cylinder can be provided for a fuel cell only 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 common bottleneck valve in the market is that a main valve body of the bottleneck valve is externally connected with a single valve element and a component with corresponding functions through an external pipeline, and each single valve element and component are arranged around the main valve body in a row. The bottle mouth valve with the structure has the following defects: the external pipelines are large in quantity and complex in layout, and the integral structure of the bottle mouth valve occupies a large space; secondly, the hydrogen leakage phenomenon is easy to occur in the using process, and the safety and the reliability are very low.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that needs to solve is: the highly integrated high-pressure hydrogen bottle mouth valve integrates all single valve bodies and components on the main valve body, so that the bottle mouth valve is simpler and more compact in whole and convenient for pipeline layout, the hydrogen leakage risk can be reduced, and the safety and reliability of the bottle mouth valve are improved.
In order to solve the above problem, the utility model adopts the following technical scheme: the highly integrated high-pressure hydrogen cylinder mouth valve is arranged on the mouth of the hydrogen storage cylinder in a sealing way, and the highly integrated high-pressure hydrogen cylinder mouth valve structurally comprises: the main valve body is provided with a connecting column body which can extend into the mouth of the hydrogen storage cylinder at the bottom, the connecting column body is provided with a connecting thread which is matched and connected with the internal thread of the mouth of the hydrogen storage cylinder, and the mouth valve is screwed on the mouth of the hydrogen storage cylinder through the connecting thread on the connecting column body. A first flow passage and a second flow passage are arranged in the main valve body and are mutually independent, an air inlet of the first flow passage penetrates through the surface of the main valve body to form a first air inlet on the surface of the main valve body, an air outlet of the first flow passage penetrates through the bottom surface of the connecting column body to form a first air outlet on the bottom surface of the connecting column body; the air inlet of the second flow passage penetrates through the bottom surface of the connecting column body to form a second air inlet, and the air outlet of the second flow passage penetrates through the surface of the main valve body to form a second air outlet on the surface of the main valve body.
A first filter and a one-way valve are sequentially arranged on the first flow channel from the first gas inlet to the first gas outlet, and raw material gas filled in the hydrogen storage cylinder enters from the first gas inlet and then sequentially flows through the first filter, the one-way valve and the first gas outlet to be filled in the hydrogen storage cylinder. Wherein the one-way valve is arranged to ensure that gas in the hydrogen storage cylinder cannot flow from the first gas outlet to the first gas inlet.
A flow limiting valve, a second filter, an electromagnetic valve, a manual cut-off valve and a pressure reducing valve are sequentially arranged on the second flow channel from the second air inlet to the second air outlet; the pressure reducing valve body is in a cylindrical shape, an external thread is arranged on the pressure reducing valve body, a long groove which is recessed inwards is arranged on the side wall of the pressure reducing valve body below the external thread, an air inlet of the pressure reducing valve is arranged at the bottom of the long groove, an air outlet of the pressure reducing valve is arranged at the bottom of the pressure reducing valve body, a connecting hole which is recessed inwards is arranged on the main valve body, an internal thread which is matched with the external thread is arranged on the side wall of the connecting hole, after the pressure reducing valve is tightly screwed in the connecting hole in a sealing manner, a gap is reserved between the bottom of the pressure reducing valve body and the bottom of the connecting hole, a second connecting hole is arranged on the side wall of the connecting hole between the bottom of the pressure reducing valve body and the bottom of the connecting hole, a first connecting hole is arranged, The first connecting hole, the pressure reducing valve and the second connecting hole flow out of the second air outlet.
Further, according to the highly integrated high-pressure hydrogen cylinder mouth valve, the plurality of platforms are cut on the side wall of the top of the pressure reducing valve body at intervals, and the pressure reducing valve body is convenient to screw and mount due to the arrangement of the platforms.
Further, the high-integration high-pressure hydrogen cylinder mouth valve comprises a pressure reducing valve body, a first valve body and a second valve body, wherein the outer diameter of the first valve body is larger than that of the second valve body, the external thread and the long groove are both positioned on the first valve body, and the air outlet of the pressure reducing valve is positioned at the bottom of the second valve body; the connecting hole is composed of a first connecting cavity matched with the first valve body and a second connecting cavity matched with the second valve body, the inner diameter of the first connecting cavity is larger than that of the second connecting cavity, the first connecting hole is positioned on the side wall of the first connecting cavity, and the second connecting hole is positioned on the side wall of the second connecting cavity; when the pressure reducing valve is tightly screwed in the connecting hole, the second valve body extends into the second connecting cavity, a gap is reserved between the bottom of the second valve body and the bottom of the second connecting cavity, and the second connecting hole is located in the side wall of the second connecting cavity between the second valve body and the second connecting cavity. The setting of above-mentioned structure can prevent from the hydrogen that gets into from first connecting hole to leak to the second connecting hole from the clearance between relief pressure valve body and the connecting hole pore wall to guarantee the accuracy of relief pressure valve pressure regulating.
Further, in the highly integrated high-pressure hydrogen cylinder mouth valve, an accommodating groove is formed in the side wall of the pressure reducing valve body between the external thread and the long groove, and a check ring and a sealing ring are arranged in the accommodating groove.
Further, in the highly integrated high-pressure hydrogen cylinder mouth valve, an independent third flow channel is arranged in the main valve body, an air inlet of the third flow channel penetrates through the bottom surface of the connecting column body and forms a third air inlet on the bottom surface of the connecting column body, and an air outlet of the third flow channel penetrates through the surface of the main valve body and forms a third air outlet on the surface of the main valve body; and a TPRD discharging device for blocking the third flow passage from flowing is arranged on the third flow passage.
Further, in the highly integrated high-pressure hydrogen cylinder mouth valve, an independent detection channel is arranged in the main valve body, one end of the detection channel penetrates through the bottom surface of the connecting column body to form a detection port, the other end of the detection channel penetrates through the surface of the main valve body to form an installation port on the surface of the main valve body, and the temperature sensor is hermetically arranged in the detection channel.
Further, in the highly integrated high-pressure hydrogen cylinder mouth valve, an independent pressure relief channel is arranged in the main valve body, an air inlet of the pressure relief channel penetrates through the bottom surface of the connecting cylinder body and forms a pressure relief inlet on the bottom surface of the connecting cylinder body, an air outlet of the pressure relief channel penetrates through the surface of the main valve body and forms a pressure relief outlet on the surface of the main valve body, and a safety relief valve and a pressure transmitter are arranged on the pressure relief channel.
The utility model has the advantages that: the bottle mouth valve has the advantages that the integration level is high, the number of external pipelines of the bottle mouth valve is effectively reduced, the pipeline layout is convenient, and the integral structure of the bottle mouth valve is simpler and more compact; the risk of hydrogen leakage is reduced, and the safety and reliability of the bottleneck valve are improved.
Drawings
Fig. 1 is a schematic perspective view of a highly integrated high-pressure hydrogen cylinder mouth valve according to the present invention.
Fig. 2 is a schematic perspective view of another direction of the highly integrated high-pressure hydrogen cylinder mouth valve of the present invention.
Fig. 3 is a schematic view of the structure in the direction a in fig. 2.
Fig. 4 is a schematic structural view of the top surface of a highly integrated high pressure hydrogen cylinder neck valve according to the present invention.
Fig. 5 is a schematic view of the structure in the sectional direction D-D in fig. 4.
FIG. 6 is a schematic view of the structure of FIG. 4 taken along the section E-E.
Fig. 7 is a schematic view of the internal structure of the pressure reducing valve integrated in the main valve body.
Fig. 8 is a schematic view of the structure in the direction C in fig. 1.
FIG. 9 is a schematic view of the structure in the sectional direction B-B in FIG. 8.
Fig. 10 is a schematic perspective view of the pressure reducing valve.
Fig. 11 is a schematic view of the internal structure of the pressure reducing valve.
Fig. 12 is a schematic diagram of a highly integrated high pressure hydrogen cylinder port valve according to the present invention.
Fig. 13 is a schematic structural view of the first filter.
Fig. 14 is a schematic view of the internal structure of the first filter.
Fig. 15 is a schematic view showing an operation state in which the first filter is mounted in the main valve body.
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 and 2, the highly integrated high-pressure hydrogen cylinder mouth valve of the present embodiment has the following structure: the high-pressure hydrogen cylinder mouth valve comprises a main valve body 1, wherein a connecting cylinder 2 capable of extending into the mouth of a hydrogen storage cylinder 100 is arranged at the bottom of the main valve body 1, a connecting thread 21 matched and connected with an internal thread of the mouth of the hydrogen storage cylinder 100 is arranged on the connecting cylinder 2, and the high-pressure hydrogen cylinder mouth valve which is highly integrated is screwed on the mouth of the hydrogen storage cylinder 100 through the connecting thread 21 on the connecting cylinder 2. As shown in fig. 1, 3, 6, 7, and 12, a first flow passage 3 and a second flow passage 4 are provided in the main valve body 1, and the first flow passage 3 and the second flow passage 4 are independent from each other and do not interfere with each other. The inlet of the first flow passage 3 penetrates the surface of the main valve body 1 to form a first inlet 31 on the surface of the main valve body 1, and the outlet of the first flow passage 3 penetrates the bottom surface of the connecting column body 2 to form a first outlet on the bottom surface of the connecting column body 2. A first filter 32 and a one-way valve 33 are sequentially arranged on the first flow channel 3 from the first gas inlet 31 to the first gas outlet, and the raw material gas filled in the hydrogen storage cylinder 100 enters from the first gas inlet 31 and then sequentially passes through the first filter 32, the one-way valve 33 and the first gas outlet to be filled in the hydrogen storage cylinder 100. Wherein the provision of the check valve 33 ensures that the gas in the hydrogen storage cylinder 100 cannot flow from the first gas outlet port to the first gas inlet port 31. As shown in fig. 2 and 3, in the present embodiment, to make the internal structure of the mouthpiece valve more compact, the check valve 33 is provided in the first air outlet.
As shown in fig. 2, 3, 5, 7 and 12, the inlet of the second flow path 4 penetrates the bottom surface of the connecting cylinder 2 to form a second inlet at the bottom surface of the connecting cylinder 2, and the outlet of the second flow path 4 penetrates the surface of the main valve body 1 to form a second outlet 41 at the surface of the main valve body 1. A flow restriction valve 42, a second filter 43, an electromagnetic valve 44, a manual shutoff valve 45, and a pressure reducing valve 5 are provided in the second flow path 4 in this order from the second inlet toward the second outlet 41.
As shown in fig. 7, 10 and 11, the valve body of the pressure reducing valve 5 is in a cylindrical shape, an external thread 51 is provided on the valve body of the pressure reducing valve 5, an inwardly recessed long groove 52 is provided on the side wall of the valve body of the pressure reducing valve 5 below the external thread 51, an air inlet 53 of the pressure reducing valve is provided at the bottom of the long groove, an air outlet 54 of the pressure reducing valve is provided at the bottom of the valve body of the pressure reducing valve 5, an inwardly recessed connecting hole 11 is provided on the main valve body 1, an internal thread 12 matched with the external thread 51 is provided on the side wall of the connecting hole 11, as shown in fig. 11, an accommodating groove is provided on the side wall of the valve body of the pressure reducing valve 5 between the. After the pressure reducing valve 5 is tightly screwed in the connecting hole 11 in a sealing manner, a gap is left between the bottom of the valve body of the pressure reducing valve 5 and the bottom of the connecting hole 11, a second connecting hole 14 is formed in the side wall of the connecting hole 11 between the bottom of the valve body of the pressure reducing valve 5 and the bottom of the connecting hole 11, a first connecting hole 13 is formed in the side wall of the connecting hole 11 opposite to the long groove 52, and high-pressure hydrogen in the hydrogen storage cylinder 100 flows out of the second gas outlet 41 after sequentially passing through the flow limiting valve 42, the second filter 43, the electromagnetic valve 44, the manual cut-off valve 45, the first connecting hole 13, the pressure reducing valve 5. In this embodiment, the flow restriction valve 42 is provided in the second air inlet in order to make the internal structure of the mouthpiece valve more compact.
As shown in FIG. 10, a plurality of platforms 50 are cut at intervals on the side wall of the top of the valve body of the pressure reducing valve 5, and the platforms 50 are arranged to facilitate the screwing installation of the valve body of the pressure reducing valve 5.
As shown in fig. 10 and 11, the valve body of the pressure reducing valve 5 is composed of a first valve body 501 and a second valve body 502, the outer diameter of the first valve body 501 is larger than that of the second valve body 502, the external thread 51 and the elongated groove 52 are both located on the first valve body 501, and the air outlet 54 of the pressure reducing valve is located at the bottom of the second valve body 502. The connecting hole 11 is composed of a first connecting cavity matched with the first valve body 501 and a second connecting cavity matched with the second valve body 502, the inner diameter of the first connecting cavity is larger than that of the second connecting cavity, the first connecting hole 13 is located on the side wall of the first connecting cavity, and the second connecting hole 14 is located on the side wall of the second connecting cavity. When the pressure reducing valve 5 is tightly screwed in the connecting hole 11, the second valve body 502 extends into the second connecting cavity, a gap is reserved between the bottom of the second valve body 502 and the bottom of the second connecting cavity, and the second connecting hole 14 is positioned on the side wall of the second connecting cavity between the bottom of the second valve body 502 and the bottom of the second connecting cavity.
As shown in fig. 1, 3, 5, 8, 9 and 12, an independent third flow channel 7 is provided in the main valve body 1, and three of the third flow channel 7, the first flow channel 3 and the second flow channel 4 are independent from each other and do not interfere with each other. The air inlet of the third flow passage 7 penetrates through the bottom surface of the connecting column body 2, a third air inlet 72 is formed on the bottom surface of the connecting column body 2, and the air outlet of the third flow passage 7 penetrates through the surface of the main valve body 1, and a third air outlet 73 is formed on the surface of the main valve body 1; the third flow channel 7 is provided with a TPRD relief device 71 that blocks the flow of the third flow channel 7. When the temperature of the high-pressure hydrogen in the third flow channel 7 reaches a certain value, the fusible alloy plug in the TPRD discharging device 71 will melt, so that the third flow channel 7 is smooth, and the high-pressure hydrogen in the hydrogen storage tank is discharged, thereby playing a role in protection.
As shown in fig. 1, 3, 4, 5, and 12, an independent detection passage 8 is provided in the main valve body 1, and the detection passage 8, the third flow channel 7, the first flow channel 3, and the second flow channel 4 are independent from each other and do not interfere with each other. One end of the detection passage 8 penetrates the bottom surface of the connection cylinder 2 to form a detection port 81 on the bottom surface of the connection cylinder 2, the other end of the detection passage 8 penetrates the surface of the main valve body 1 to form a mounting port 82 on the surface of the main valve body 1, and a temperature sensor 83 is hermetically arranged in the detection passage 8. The temperature sensor 83 is a thermistor, a sensing head of the thermistor extends out from the detection port 81, a wire seat 85 of the thermistor is hermetically arranged in the detection channel 8, and a wire 84 extending out from the wire seat 85 is connected out from the mounting port 82.
As shown in fig. 2, 3 and 12, an independent pressure relief channel is provided in the main valve body 1, and the pressure relief channel is independent from and does not interfere with the detection channel 8, the third flow channel 7, the first flow channel 3 and the second flow channel 4. The air inlet of the pressure relief channel penetrates through the bottom surface of the connecting column body 2 and forms a pressure relief inlet 61 on the bottom surface of the connecting column body 2, the air outlet of the pressure relief channel penetrates through the surface of the main valve body 1 and forms a pressure relief outlet on the surface of the main valve body 1, and the pressure relief channel is provided with a safety relief valve 6 and a pressure transmitter 62. In order to make the internal structure of the bottle mouth valve more compact, the safety relief valve 6 is arranged in the relief outlet.
Example two
The structures of the first filter 32 and the second filter 43 are completely the same, and the structure of the first filter 32 is described in detail in this embodiment, as shown in fig. 13, 14, and 15, the structure of the first filter 32 is: the method comprises the following steps: the filter element comprises a filter element cylinder 201, wherein one end of the filter element cylinder 201 is provided with an air outlet 211, and the air outlet 211 is communicated with an inner cavity 212 of the filter element cylinder 201. The other end of the filter element cylinder 201 is provided with an air inlet 202, the outer end of the air inlet 202 is provided with an air inlet 221, the side wall of the air inlet 202 is provided with a plurality of air outlet through holes 222 at intervals, and each air outlet through hole 222 is communicated with the air inlet 221. In this embodiment, the number of the exhaust through holes 222 is four, and the four exhaust through holes 222 are uniformly spaced along the circumferential direction of the sidewall of the intake head 202.
As shown in fig. 15, the filter wire 213 is wound around the cylindrical wall of the filter cartridge body 201, the diameter of the filter wire 213 is preferably about 0.5mm, and the filter wire 213 is a steel wire. The gaps between the adjacent filter wires 213 form a filter gap, and in order to ensure the filtering effect, the filter gap between the adjacent filter wires 213 is 20 micrometers or more and 50 micrometers or less.
The wall circumference of the filter element cylinder 201 wound with the filter wires 213 is uniformly provided with a plurality of inward-concave air inlet grooves 214 at intervals, each air inlet groove 214 is internally provided with a plurality of filter element through holes 215, and each filter element through hole 215 is communicated with the inner cavity 212 of the filter element cylinder 201. In this embodiment, the filtering through holes 215 in two adjacent air inlet grooves 214 are staggered from each other in the axial direction of the filter element cylinder 201.
In order to ensure the installation stability of the filter wires 213 and the uniformity of the filtering gap between adjacent filter wires 213, in this embodiment, the wall of the filter cartridge body 201 is provided with threads 216, the thread pitch of the threads 216 is greater than the diameter of the filter wires 213 by 20 ~ 50 microns, and the filter wires 213 are wound in thread grooves formed by the adjacent threads 216, both ends of the wall of the filter cartridge body 201 are respectively provided with a fixing hole 217 and a fixing groove 218, one end of each filter wire 213 is fixed in the fixing hole 217, and the other end of each filter wire 213 is fixed in the fixing groove 218.
When in use, the first filter 32 is arranged in the valve cavity 231 of the first flow passage 3, the air inlet 221 on the air inlet head 202 is communicated with the first air inlet 31 of the first flow passage 3, a closed filtering chamber 230 is formed between the cylinder wall of the filter element cylinder 201 and the inner wall of the valve cavity 231, each air outlet through hole 222 on the air inlet head 202 is communicated with the filtering chamber 230, and the air outlet 211 of the filter element cylinder 201 is communicated with the second one-way valve 33.
The hydrogen gas enters the valve cavity 231 from the first gas inlet 31 of the first flow channel 3, then enters the filtering chamber 230 from the gas outlet through hole 222 through the gas inlet hole 221, and the hydrogen gas in the filtering chamber 230 enters the inner cavity 212 of the filter cartridge barrel 201 from the filter cartridge through hole 215 of the gas inlet groove 214 after being filtered by the filter wire 213. The hydrogen in the inner cavity 212 of the cartridge body 201 enters the second one-way valve 33 from the exhaust port 211. The structure of the second filter 43 is identical to the structure and the working principle of the first filter 32, and will not be described in detail.
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 bottle mouth valve has the advantages that the integration level is high, the number of external pipelines of the bottle mouth valve is effectively reduced, the pipeline layout is convenient, and the integral structure of the bottle mouth valve is simpler and more compact; the risk of hydrogen leakage is reduced, and the safety and reliability of the bottleneck valve are improved.
Claims (7)
1. A highly integrated high pressure hydrogen cylinder neck valve, comprising: the main valve body, its characterized in that: the bottom of the main valve body is provided with a connecting cylinder which can extend into the mouth of the hydrogen storage cylinder, and the connecting cylinder is provided with a connecting thread which is matched and connected with the mouth of the hydrogen storage cylinder; a first flow passage and a second flow passage are arranged in the main valve body and are mutually independent, an air inlet of the first flow passage penetrates through the surface of the main valve body to form a first air inlet on the surface of the main valve body, an air outlet of the first flow passage penetrates through the bottom surface of the connecting column body to form a first air outlet on the bottom surface of the connecting column body; the air inlet of the second flow passage penetrates through the bottom surface of the connecting column body to form a second air inlet, and the air outlet of the second flow passage penetrates through the surface of the main valve body to form a second air outlet on the surface of the main valve body; a first filter and a one-way valve are sequentially arranged on the first flow channel from the first air inlet to the first air outlet, and the one-way valve blocks air from flowing from the first air outlet to the first air inlet; a flow limiting valve, a second filter, an electromagnetic valve, a manual cut-off valve and a pressure reducing valve are sequentially arranged on the second flow channel from the second air inlet to the second air outlet; the pressure reducing valve body is in a cylinder shape, an external thread is arranged on the pressure reducing valve body, an inward concave long groove is arranged on the side wall of the pressure reducing valve body below the external thread, an air inlet of the pressure reducing valve is arranged at the bottom of the long groove, and an air outlet of the pressure reducing valve is arranged at the bottom of the pressure reducing valve body; the main valve body is provided with a connecting hole which is recessed inwards, the side wall of the connecting hole is provided with an internal thread matched with the external thread, the pressure reducing valve is tightly screwed in the connecting hole in a sealing way, a gap is reserved between the bottom of the valve body of the pressure reducing valve and the hole bottom of the connecting hole, the side wall of the connecting hole between the bottom of the valve body of the pressure reducing valve and the hole bottom of the connecting hole is provided with a second connecting hole, the side wall of the connecting hole opposite to the long groove is provided with a first connecting hole, and gas flows out from a second gas outlet after sequentially passing through the flow limiting valve, a second filter, an electromagnetic valve, a manual cut.
2. The highly integrated high-pressure hydrogen cylinder neck valve according to claim 1, wherein: a plurality of platforms are cut on the side wall of the top of the pressure reducing valve body at intervals.
3. A highly integrated high-pressure hydrogen cylinder mouth valve according to claim 1 or 2, characterized in that: the pressure reducing valve body consists of a first valve body and a second valve body, the outer diameter of the first valve body is larger than that of the second valve body, the external threads and the long groove are both positioned on the first valve body, and the air outlet of the pressure reducing valve is positioned at the bottom of the second valve body; the connecting hole is composed of a first connecting cavity matched with the first valve body and a second connecting cavity matched with the second valve body, the inner diameter of the first connecting cavity is larger than that of the second connecting cavity, the first connecting hole is positioned on the side wall of the first connecting cavity, and the second connecting hole is positioned on the side wall of the second connecting cavity; when the pressure reducing valve is tightly screwed in the connecting hole, the second valve body extends into the second connecting cavity.
4. A highly integrated high-pressure hydrogen cylinder mouth valve according to claim 1 or 2, characterized in that: the pressure reducing valve body side wall between the external thread and the long groove is provided with an accommodating groove, and the accommodating groove is internally provided with a check ring and a sealing ring.
5. The highly integrated high-pressure hydrogen cylinder neck valve according to claim 1, wherein: an independent third flow passage is arranged in the main valve body, an air inlet of the third flow passage penetrates through the bottom surface of the connecting column body to form a third air inlet, and an air outlet of the third flow passage penetrates through the surface of the main valve body to form a third air outlet on the surface of the main valve body; and a TPRD discharging device for blocking the third flow passage from flowing is arranged on the third flow passage.
6. The highly integrated high-pressure hydrogen cylinder neck valve according to claim 1, wherein: an independent detection channel is arranged in the main valve body, one end of the detection channel penetrates through the bottom surface of the connecting column body to form a detection port, the other end of the detection channel penetrates through the surface of the main valve body to form a mounting port on the surface of the main valve body, and the temperature sensor is arranged in the detection channel in a sealing mode.
7. A highly integrated high-pressure hydrogen cylinder mouth valve according to claim 1, 5 or 6, characterized in that: an independent pressure relief channel is arranged in the main valve body, an air inlet of the pressure relief channel penetrates through the bottom surface of the connecting column body and forms a pressure relief inlet, an air outlet of the pressure relief channel penetrates through the surface of the main valve body and forms a pressure relief outlet on the surface of the main valve body, and a safety pressure relief valve and a pressure transmitter are arranged on the pressure relief channel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920253950.3U CN209892796U (en) | 2019-02-28 | 2019-02-28 | Highly integrated high-pressure hydrogen cylinder mouth valve |
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| CN201920253950.3U CN209892796U (en) | 2019-02-28 | 2019-02-28 | Highly integrated high-pressure hydrogen cylinder mouth valve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826981A (en) * | 2019-02-28 | 2019-05-31 | 上海华敬氢能科技有限公司 | A kind of highly integrated high pressure hydrogen bottle-jack valve |
| CN112984157A (en) * | 2021-02-05 | 2021-06-18 | 北京科泰克科技有限责任公司 | Gas storage cylinder valve and hydrogen storage system |
-
2019
- 2019-02-28 CN CN201920253950.3U patent/CN209892796U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826981A (en) * | 2019-02-28 | 2019-05-31 | 上海华敬氢能科技有限公司 | A kind of highly integrated high pressure hydrogen bottle-jack valve |
| CN112984157A (en) * | 2021-02-05 | 2021-06-18 | 北京科泰克科技有限责任公司 | Gas storage cylinder valve and hydrogen storage system |
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