CN218455161U - Self-operated pressure regulating automatic switching device for liquid nitrogen station - Google Patents
Self-operated pressure regulating automatic switching device for liquid nitrogen station Download PDFInfo
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- CN218455161U CN218455161U CN202222633503.5U CN202222633503U CN218455161U CN 218455161 U CN218455161 U CN 218455161U CN 202222633503 U CN202222633503 U CN 202222633503U CN 218455161 U CN218455161 U CN 218455161U
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Abstract
The utility model relates to a self-operated pressure regulating automatic switching device of a liquid nitrogen station, which comprises a gas supply pipeline connected with a gas supply system and a gas transmission pipeline connected with the nitrogen pipeline, wherein a first pressure guide pipe and a second pressure guide pipe which are connected in parallel are connected between the gas supply pipeline and the gas transmission pipeline; the first pressure detection part and the second pressure detection part are respectively arranged in the first pressure guide pipe and the second pressure guide pipe and are respectively connected with the first self-operated pressure regulating valve and the second self-operated pressure regulating valve through the control unit. The utility model has the advantages of reasonable design, adopt two formula of relying on oneself air-vent valves to connect in parallel to set up between gas supply line and gas-supply pipe, when a formula of relying on oneself air-vent valve trouble, another formula of relying on oneself air-vent valve can begin to move, realizes continuous, stable air feed, and the guarantee is at maintenance or change in-process air feed incessant.
Description
The technical field is as follows:
the utility model relates to a formula of relying on oneself pressure regulating automatic switching control equipment of liquid nitrogen station.
The background art comprises the following steps:
the vaporizer of the liquid nitrogen gas station heats the low-temperature liquid in the heat exchange tube by utilizing natural convection of air to ensure that the low-temperature liquid is completely vaporized into gas; the high-efficiency energy-saving heat exchange equipment integrates air temperature type and heating type vaporization functions and can replace heating vaporization products. The vaporizer vaporizes low-temperature liquid gas into gas at a certain temperature through heat exchange, and is divided into three types, namely high pressure, medium pressure and low pressure according to the purpose. The high-pressure vaporizer vaporizes the liquid oxygen, liquid nitrogen and liquid argon pressurized by the low-temperature liquid pump into high-pressure gas and fills the high-pressure gas into the steel cylinder. The low-pressure vaporizer vaporizes the low-temperature liquid in the storage tank into low-pressure gas, and the low-pressure gas is conveyed to a use site through a pressure regulating device and a carbon steel or stainless steel pipeline.
Under the normal condition, the use pressure of the gas used by the customer is relatively stable, and the pressure reducing valve is arranged for ensuring the gas supply pressure and the uninterrupted gas supply, but the pressure reducing valve is changed by the gas supply pressure of the storage tank, so that the gas supply pressure is unstable, and the gas use of the customer is influenced.
The utility model has the following contents:
the utility model discloses make the improvement to the problem that above-mentioned prior art exists, promptly the utility model aims to solve the technical problem that a formula pressure regulating automatic switching control equipment is done by oneself to liquid nitrogen station is provided, reasonable in design improves the stability of air feed.
In order to realize the purpose, the utility model discloses a technical scheme is: a self-operated pressure regulating automatic switching device of a liquid nitrogen station comprises a gas supply pipeline connected with a gas supply system and a gas transmission pipeline connected with a nitrogen pipeline, wherein a first pressure guide pipe and a second pressure guide pipe which are connected in parallel are connected between the gas supply pipeline and the gas transmission pipeline, a first self-operated pressure regulating valve is installed on the first pressure guide pipe, and a second self-operated pressure regulating valve is installed on the second pressure guide pipe; the first pressure detection part and the second pressure detection part are respectively connected with the first self-operated pressure regulating valve and the second self-operated pressure regulating valve through the control unit.
Furthermore, a first manual valve A and a first manual valve B are respectively installed on the input side and the output side of the first self-operated pressure regulating valve on the first pressure guide pipe, two first branch pipelines connected in parallel are connected between the first manual valve B and the first self-operated pressure regulating valve, and a first pressure release valve and a first safety valve are respectively installed on the two first branch pipelines.
Furthermore, a first pressure gauge is installed on the first pressure guide pipe on the input side of the first manual valve B.
Furthermore, a second manual valve A and a second manual valve B are respectively arranged on the input side and the output side of the second self-operated pressure regulating valve on the second pressure guide pipe, two second branch pipelines connected in parallel are connected between the second manual valve B and the second self-operated pressure regulating valve, and a second pressure release valve and a second safety valve are respectively arranged on the two second branch pipelines.
Furthermore, a second pressure gauge is arranged on the second pressure guide pipe on the input side of the second manual valve B.
Further, the first pressure detection piece and the second pressure detection piece both adopt pressure sensors.
Compared with the prior art, the utility model discloses following effect has: the utility model has the advantages of reasonable design, adopt two formula of relying on oneself air-vent valves to connect in parallel to set up between gas supply line and gas-supply pipe, when a formula of relying on oneself air-vent valve trouble, another formula of relying on oneself air-vent valve can begin to move, realizes continuous, stable air feed, and the guarantee is at maintenance or change in-process air feed incessant.
Description of the drawings:
fig. 1 is a schematic structural diagram of an embodiment of the present invention.
In the figure:
1-first manual valve a; 2-a first self-operated pressure regulating valve; 3-a first safety valve; 4-a first pressure gauge; 5-first manual valve B; 6-a first pressure relief valve; 7-a second pressure gauge; 8-second manual valve A; 9-a second safety valve; 10-a second pressure relief valve; 11-a second self-operated pressure regulating valve; 12-second manual valve B; 13-a gas supply duct; 14-gas transmission pipeline; 15-a first pressure pipe; 16-a second pressure pipe; 17-a first branch line; 18-second branch line.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
As shown in fig. 1, the utility model relates to a liquid nitrogen station self-operated pressure regulating automatic switching device, including the gas supply line 13 that is connected with gas supply system's nitrogen gas output, the gas transmission line 14 that is connected with the nitrogen gas pipeline that is connected to with the gas consumption point, be connected with parallelly connected first pressure guide pipe 15 and second pressure guide pipe 16 between gas supply line 13 and the gas transmission line 14, install first self-operated pressure regulating valve 2 on the first pressure guide pipe 15, install second self-operated pressure regulating valve 11 on the second pressure guide pipe 16, first self-operated pressure regulating valve 2 and second self-operated pressure regulating valve 11 decompress the air feed; the first pressure detection part and the second pressure detection part are respectively installed in the first pressure guide pipe 15 and the second pressure guide pipe 16, and the first pressure detection part and the second pressure detection part are respectively connected with the first self-operated pressure regulating valve and the second self-operated pressure regulating valve through the control unit, namely: the gas supply pipeline 13, the first pressure guide pipe 15 and the gas transmission pipeline 14 form a gas supply channel, the gas supply pipeline 13, the second pressure guide pipe 16 and the gas transmission pipeline 14 form another gas supply channel, and the two gas supply channels are connected in parallel. When the pressure regulating valve works, when the medium pressure detected by the first pressure detection piece is reduced to a set value, the control unit drives the first self-operated pressure regulating valve 2 to act, and the first pressure guide pipe 15 starts to supply gas to the nitrogen pipeline through the gas pipeline 14; when the first self-operated pressure regulating valve 2 fails and cannot operate, the second pressure detection part detects the medium pressure, and when the medium pressure detected by the second pressure detection part is reduced to a set value, the control unit drives the second self-operated pressure regulating valve 11 to operate, and the second pressure guide pipe 16 starts to supply gas to the nitrogen pipeline through the gas transmission pipeline 14. Two self-operated pressure regulating valves are arranged between the gas supply pipeline and the gas delivery pipe in parallel, when one self-operated pressure regulating valve fails, the other self-operated pressure regulating valve can start to act, continuous and stable gas supply is realized, and uninterrupted gas supply is guaranteed in the maintenance or replacement process.
In this embodiment, the first pressure guide pipe 15 is provided with a first manual valve A1 and a first manual valve B5 on the input side and the output side of the first self-operated pressure regulating valve 2, respectively, and the first manual valve A1 and the first manual valve B5 are used for manually shutting off the input side and the output side of the first self-operated pressure regulating valve.
In this embodiment, two parallel first branch pipelines 17 are connected between the first manual valve B1 and the first self-operated pressure regulating valve 2, a first pressure relief valve 6 and a first safety valve 3 are respectively installed on the two first branch pipelines 17, the first pressure relief valve can be used for pressure relief testing, and the first safety valve is used for safety protection.
In this embodiment, a first pressure gauge 4 is installed on the first pressure guiding pipe 15 at the input side of the first manual valve B5, and is used for displaying the pressure value after pressure reduction.
In this embodiment, a second manual valve A8 and a second manual valve B12 are respectively mounted on the second pressure guiding pipe 16 on the input side and the output side of the second self-operated pressure regulating valve 11, and the second manual valve A8 and the second manual valve B12 are used for manually closing the input side and the output side of the second self-operated pressure regulating valve 11.
In this embodiment, two parallel second branch pipelines 18 are connected between the second manual valve B12 and the second self-operated pressure regulating valve 11, a second pressure relief valve 10 and a second safety valve 9 are respectively installed on the two second branch pipelines 18, the second pressure relief valve can be used for pressure relief testing, and the second safety valve is used for safety protection.
In this embodiment, a second pressure gauge 7 is installed on the second pressure guiding pipe 16 at the input side of the second manual valve B12, and is used for displaying the pressure value after pressure reduction.
In this embodiment, the first pressure detection member and the second pressure detection member may both adopt a pressure sensor, the set value of the first pressure detection member may be 5.1bar, and the set value of the first pressure detection member may be 5 bar. Because the pressure fluctuation of a liquid nitrogen supply system is large, in order to ensure the stability of gas supply, the pressure of the system is reduced to gas use pressure by adopting a self-operated pressure regulating valve, for example, when the pressure of a medium detected by a first pressure detection part is reduced from 10bar to 5.1bar, the first self-operated pressure regulating valve acts to start gas supply to a nitrogen pipeline; when the first self-operated pressure regulating valve fails and cannot act, and when the pressure of the medium detected by the second pressure detecting element is reduced from 10bar to 5bar, the second self-operated pressure regulating valve acts to start supplying gas to the nitrogen pipeline. It should be noted that, the pressure sensor is an existing mature product, the control unit may adopt a single chip or a PLC, and the connection structure of the two is the prior art, which is not repeated herein.
The utility model discloses if disclose or related to mutual fixed connection's spare part or structure, then, except that other the note, fixed connection can understand: a detachable fixed connection (for example using a bolt or screw connection) can also be understood as: non-detachable fixed connections (e.g. riveting, welding) can, of course, also be replaced by one-piece structures (e.g. manufactured in one piece using a casting process) (unless it is obvious that one-piece processes cannot be used).
In addition, the terms used in any aspect of the present disclosure as described above to indicate positional relationships or shapes include similar, analogous, or approximate states or shapes unless otherwise stated.
The utility model provides an arbitrary part both can be formed by a plurality of solitary component parts equipment, also can be for the solitary part that the integrated into one piece technology made out.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that: modifications can still be made to the embodiments of the invention or equivalents may be substituted for some of the features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (6)
1. The utility model provides a liquid nitrogen gas station formula pressure regulating automatic switching control equipment, includes the gas supply line that is connected with gas supply system, the gas transmission pipeline that is connected with the nitrogen gas pipeline, its characterized in that: a first pressure guide pipe and a second pressure guide pipe which are connected in parallel are connected between the gas supply pipeline and the gas transmission pipeline, a first self-operated pressure regulating valve is installed on the first pressure guide pipe, and a second self-operated pressure regulating valve is installed on the second pressure guide pipe; the first pressure detection part and the second pressure detection part are respectively arranged in the first pressure guide pipe and the second pressure guide pipe and are respectively connected with the first self-operated pressure regulating valve and the second self-operated pressure regulating valve through the control unit.
2. The self-operated pressure regulating automatic switching device of the liquid nitrogen station as claimed in claim 1, characterized in that: the first pressure guide pipe is provided with a first manual valve A and a first manual valve B on the input side and the output side of the first self-operated pressure regulating valve respectively, two first branch pipelines connected in parallel are connected between the first manual valve B and the first self-operated pressure regulating valve, and a first pressure release valve and a first safety valve are arranged on the two first branch pipelines respectively.
3. The self-operated pressure regulating automatic switching device of the liquid nitrogen station as claimed in claim 2, characterized in that: and a first pressure gauge is arranged on the first pressure guide pipe on the input side of the first manual valve B.
4. The self-operated pressure regulating automatic switching device of the liquid nitrogen station as claimed in claim 1, characterized in that: and a second manual valve A and a second manual valve B are respectively arranged on the input side and the output side of the second self-operated pressure regulating valve on the second pressure guide pipe, two second branch pipelines connected in parallel are connected between the second manual valve B and the second self-operated pressure regulating valve, and a second pressure release valve and a second safety valve are respectively arranged on the two second branch pipelines.
5. The self-operated pressure regulating automatic switching device of the liquid nitrogen station as claimed in claim 4, characterized in that: and a second pressure gauge is arranged on the second pressure guide pipe on the input side of the second manual valve B.
6. The self-operated pressure regulating automatic switching device of the liquid nitrogen station as claimed in claim 1, characterized in that: and the first pressure detection piece and the second pressure detection piece both adopt pressure sensors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222633503.5U CN218455161U (en) | 2022-10-09 | 2022-10-09 | Self-operated pressure regulating automatic switching device for liquid nitrogen station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222633503.5U CN218455161U (en) | 2022-10-09 | 2022-10-09 | Self-operated pressure regulating automatic switching device for liquid nitrogen station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218455161U true CN218455161U (en) | 2023-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222633503.5U Active CN218455161U (en) | 2022-10-09 | 2022-10-09 | Self-operated pressure regulating automatic switching device for liquid nitrogen station |
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| Country | Link |
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| CN (1) | CN218455161U (en) |
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- 2022-10-09 CN CN202222633503.5U patent/CN218455161U/en active Active
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