CN212056743U - Instrument gas and purging system of hydrogen station - Google Patents
Instrument gas and purging system of hydrogen station Download PDFInfo
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- CN212056743U CN212056743U CN202020318758.0U CN202020318758U CN212056743U CN 212056743 U CN212056743 U CN 212056743U CN 202020318758 U CN202020318758 U CN 202020318758U CN 212056743 U CN212056743 U CN 212056743U
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Abstract
The utility model relates to a hydrogenation station instrument gas and purging system, which comprises two gas inlet pipes which are arranged in parallel; the two air inlet pipes are sequentially connected with a nitrogen cylinder group, a collecting pipe valve and a switching valve in series; the two air inlet pipes are both connected with a primary pressure regulating valve, the primary pressure regulating valve is sequentially connected with a secondary pressure regulating valve and a purge gas outlet valve, and an instrument air outlet valve is arranged between the primary pressure regulating valve and the secondary pressure regulating valve; the advantages are as follows: (1) two paths of air supply switching are adopted to ensure the supply of an air source; (2) the pipeline is provided with discharge, so that the nitrogen cylinder is convenient to replace; (3) the device is provided with two-stage air pressure output, is used for instrument air and purging respectively, and is matched with a loose joint; (4) the remote transmission with the safety valve and the air pressure signal can give an alarm in time and ensure the safety.
Description
Technical Field
The utility model relates to a hydrogenation station technical field specifically is hydrogenation station instrument gas and purge system.
Background
The hydrogen fuel cell automobile has high energy conversion efficiency, no pollution, diversified energy sources and renewable performance, so that the hydrogen fuel cell automobile becomes an effective way for solving the problems of environmental pollution and energy, and a plurality of countries and regions successively develop and popularize the development and popularization plans of the fuel cell automobile, realize large-scale demonstration operation projects and actively promote the commercial operation of the fuel cell automobile; the hydrogen fuel cell automobile needs to be filled with hydrogen at a special hydrogenation station, so the hydrogenation station is also an important corollary device. The hydrogenation station needs meter wind and purge gas which are respectively used for opening and closing a pneumatic valve, purging pipeline fittings and the like. At present, 2 ways of supplying air sources are provided, one is to supply air by adopting an oil-free air compressor; secondly, using a nitrogen bottle to supply gas; when an oil-free air compressor is used for supplying air, the temperature is lower than 0 ℃ in winter, and the condensed water can be frozen, so that the air is dried, and the cost is increased; when adopting the nitrogen cylinder air feed, the cost is lower, but because the initial atmospheric pressure of nitrogen cylinder is high, steps down through the relief pressure valve for instrument gas or sweep, when the relief pressure valve broke down, the atmospheric pressure of its export probably is higher than the setting value, when being greater than the specified value of low reaches valve, pipe fitting, has danger, and the nitrogen cylinder of joining in marriage in addition is few, and nitrogen gas life cycle is short, will often change.
How to ensure the safety and the economical efficiency of gas supply becomes a problem which needs to be solved urgently by researchers of the company.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: how to ensure the safety and economy of gas supply;
in order to solve the technical problem, the utility model discloses a following technical scheme:
the utility model relates to a hydrogenation station instrument gas and purging system, which comprises two gas inlet pipes which are arranged in parallel; the two air inlet pipes are sequentially connected with a nitrogen cylinder group, a collecting pipe valve and a switching valve in series; the two air inlet pipes are connected with a primary pressure regulating valve, the primary pressure regulating valve is sequentially connected with a secondary pressure regulating valve and a purge gas outlet valve, and an instrument air outlet valve is arranged between the primary pressure regulating valve and the secondary pressure regulating valve.
The collecting pipe is used for collecting a plurality of nitrogen cylinders into a strand of gas, the collecting pipe valve is used for controlling whether the nitrogen enters the gas inlet pipe or not, the switching valves are used for controlling whether the nitrogen passes through the primary pressure regulating valve or not, and the two switching valves are always kept to be opened and closed, namely, when the gas collecting pipe works, only one pipeline of the two gas inlet pipes is always opened, and the other pipeline is in a standby state; the nitrogen is decompressed by a primary pressure regulating valve and used for instrument gas, and the nitrogen is decompressed by a secondary pressure regulating valve and used for purging pipeline accessories; the utility model discloses a guarantee air feed safety and economic nature.
In order to facilitate the replacement of the nitrogen cylinder group and the nitrogen purity entering the air inlet pipe, a discharge valve is arranged between the collecting pipe valve and the switching valve;
when the nitrogen cylinder needs to be replaced, the nitrogen cylinder is closed by the cylinder valve and the switching valve, the discharge valve is opened, the nitrogen in the collecting pipe is discharged through the exhaust valve, the discharge valve is closed, and the nitrogen cylinder can be replaced at the moment. And when the replacement is finished, opening the manifold valve, slightly opening the nitrogen cylinder with a cylinder valve to ensure that the nitrogen enters the manifold, then closing the nitrogen cylinder with the cylinder valve, opening the discharge valve to discharge the gas, and then closing the discharge valve. The nitrogen in the tube is purified, and the nitrogen bottle group can be used for standby.
In order to ensure the normal outlet pressure of the instrument gas, a high-low pressure air switch is arranged between the primary pressure regulating valve and the secondary pressure regulating valve;
the high-low pressure air pressure switch is suitable for detecting the outlet of the instrument gas, and when the outlet exceeds the set value of the high-low pressure air pressure switch, an alarm signal is generated.
In order to ensure the safety of the downstream valves of the instrument gas and the purge gas, the utility model adopts the safety valves which are arranged between the primary pressure regulating valve and the secondary pressure regulating valve and between the secondary pressure regulating valve and the purge gas outlet valve;
when the air pressure is larger than the set value of the safety valve, the nitrogen is discharged through the safety valve, and the safety of instrument air, a downstream valve of the purge gas and the like is ensured.
The utility model has the advantages that: the utility model relates to a hydrogenation station instrument gas and purge system, the advantage is as follows: (1) two paths of air supply switching are adopted to ensure the supply of an air source; (2) the pipeline is provided with discharge, so that the nitrogen cylinder is convenient to replace; (3) the device is provided with two-stage air pressure output, is used for instrument air and purging respectively, and is matched with a loose joint; (4) the remote transmission with the safety valve and the air pressure model can give an alarm in time and ensure safety.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a system diagram of the present invention;
in the figure: 1-air inlet pipe, 2-nitrogen cylinder group, 3-collecting pipe, 4-switching valve, 5-collecting pipe valve, 6-first level pressure regulating valve, 7-second level pressure regulating valve, 8-purge gas outlet valve, 9-instrument gas outlet valve, 10-discharge valve, 11-high and low pressure switch and 12-safety valve.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
As shown in figure 1, the utility model relates to a hydrogenation station instrument gas and purging system, which comprises two gas inlet pipes 1 which are arranged in parallel; the two air inlet pipes 1 are sequentially connected with a nitrogen cylinder group 2, a collecting pipe 3, a collecting pipe valve 5 and a switching valve 4 in series; the two air inlet pipes 1 are both connected with a primary pressure regulating valve 6, the primary pressure regulating valve 6 is sequentially connected with a secondary pressure regulating valve 7 and a purge gas outlet valve 8, and an instrument air outlet valve 9 is arranged between the primary pressure regulating valve 6 and the secondary pressure regulating valve 7;
the collecting pipe is used for collecting a plurality of nitrogen cylinders into a strand of gas, the collecting pipe valve is used for controlling whether the nitrogen enters the gas inlet pipe or not, the switching valves are used for controlling whether the nitrogen passes through the primary pressure regulating valve or not, and the two switching valves are always kept to be opened and closed, namely, when the gas collecting pipe works, only one pipeline of the two gas inlet pipes is always opened, and the other pipeline is in a standby state; the nitrogen is decompressed by the primary pressure regulating valve and used for instrument gas, and the nitrogen is decompressed by the secondary pressure regulating valve and used for purging pipeline accessories; the utility model discloses a guarantee air feed safety and economic nature.
As shown in fig. 1, in order to facilitate the replacement of the nitrogen cylinder group and the purity of the nitrogen entering the intake pipe, a discharge valve 10 is arranged between the manifold valve 5 and the switching valve 4;
when the nitrogen cylinder group needs to be replaced, the nitrogen cylinder is closed by the cylinder valve and the switching valve, the discharge valve is opened, the nitrogen in the collecting pipe is discharged by the exhaust valve, the discharge valve is closed, and the nitrogen cylinder can be replaced at the moment. And when the replacement is finished, opening the manifold valve, slightly opening the nitrogen cylinder with a cylinder valve to ensure that the nitrogen enters the manifold, then closing the nitrogen cylinder with the cylinder valve, opening the discharge valve to discharge the gas, and then closing the discharge valve. The nitrogen in the tube is purified, and the nitrogen bottle group can be used for standby; the nitrogen cylinder is not shown in this figure because the nitrogen cylinder is a nitrogen cylinder fitting with a cylinder valve.
As shown in fig. 1, in order to ensure the normal outlet pressure of the instrument gas, a high-low pressure air switch 11 is further arranged between the primary pressure regulating valve 6 and the secondary pressure regulating valve 7;
the high-low pressure air pressure switch is suitable for detecting the outlet of the instrument gas, and when the outlet exceeds the set value of the high-low pressure air pressure switch, an alarm signal is generated.
As shown in fig. 1, in order to ensure the safety of the downstream valves of the instrumentation gas and the purge gas, the present invention adopts the safety valves 12 disposed between the primary pressure regulating valve 6 and the secondary pressure regulating valve 7, and between the secondary pressure regulating valve 7 and the purge gas outlet valve 8;
when the air pressure is larger than the set value of the safety valve, the nitrogen is discharged through the safety valve, and the safety of instrument air, a downstream valve of the purge gas and the like is ensured.
The utility model relates to a hydrogenation station instrument gas and purge system, the advantage is as follows: (1) two paths of air supply switching are adopted to ensure the supply of an air source; (2) the pipeline is provided with discharge, so that the nitrogen cylinder is convenient to replace; (3) the device is provided with two-stage air pressure output, is used for instrument air and purging respectively, and is matched with a loose joint; (4) the remote transmission with the safety valve and the air pressure model can give an alarm in time and ensure safety.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (4)
1. Hydrogenation station instrument gas and purge system, its characterized in that: comprises two air inlet pipes which are arranged in parallel;
the two air inlet pipes are sequentially connected with a nitrogen cylinder group, a collecting pipe valve and a switching valve in series;
the two air inlet pipes are connected with a primary pressure regulating valve, the primary pressure regulating valve is sequentially connected with a secondary pressure regulating valve and a purge gas outlet valve, and an instrument air outlet valve is arranged between the primary pressure regulating valve and the secondary pressure regulating valve.
2. The hydrogen station instrument gas and purge system of claim 1, wherein: and a discharge valve is arranged between the collecting pipe valve and the switching valve.
3. The hydrogen station instrument gas and purge system of claim 1, wherein: and a high-low pressure air switch is also arranged between the primary pressure regulating valve and the secondary pressure regulating valve.
4. The hydrogen station instrument gas and purge system of claim 3, wherein: safety valves are arranged between the primary pressure regulating valve and the secondary pressure regulating valve and between the secondary pressure regulating valve and the purge gas outlet valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020318758.0U CN212056743U (en) | 2020-03-13 | 2020-03-13 | Instrument gas and purging system of hydrogen station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020318758.0U CN212056743U (en) | 2020-03-13 | 2020-03-13 | Instrument gas and purging system of hydrogen station |
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| Publication Number | Publication Date |
|---|---|
| CN212056743U true CN212056743U (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020318758.0U Active CN212056743U (en) | 2020-03-13 | 2020-03-13 | Instrument gas and purging system of hydrogen station |
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| CN (1) | CN212056743U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113915518A (en) * | 2021-09-23 | 2022-01-11 | 正星氢电科技郑州有限公司 | Nitrogen system of hydrogenation station |
| CN114413169A (en) * | 2021-12-25 | 2022-04-29 | 安徽明天氢能科技股份有限公司 | Nitrogen control pipeline system for hydrogenation station |
-
2020
- 2020-03-13 CN CN202020318758.0U patent/CN212056743U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113915518A (en) * | 2021-09-23 | 2022-01-11 | 正星氢电科技郑州有限公司 | Nitrogen system of hydrogenation station |
| CN114413169A (en) * | 2021-12-25 | 2022-04-29 | 安徽明天氢能科技股份有限公司 | Nitrogen control pipeline system for hydrogenation station |
| CN114413169B (en) * | 2021-12-25 | 2023-12-22 | 安徽明天氢能科技股份有限公司 | Nitrogen control pipeline system for hydrogenation station |
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