CN106870945B - Natural gas pressure regulating skid-mounted device with multistage safety protection function - Google Patents
Natural gas pressure regulating skid-mounted device with multistage safety protection function Download PDFInfo
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- CN106870945B CN106870945B CN201710030462.1A CN201710030462A CN106870945B CN 106870945 B CN106870945 B CN 106870945B CN 201710030462 A CN201710030462 A CN 201710030462A CN 106870945 B CN106870945 B CN 106870945B
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- valve
- pipeline
- gas
- output branch
- emptying
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/18—Arrangements for supervising or controlling working operations for measuring the quantity of conveyed product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Abstract
The invention provides a natural gas pressure regulating skid-mounted device with a multistage safety protection function, which comprises a skid seat, a gas-liquid separator arranged on the skid seat and a plurality of pipelines, wherein the plurality of pipelines comprise an air inlet pipeline, a pressure reducing pipeline, a first output branch, a second output branch and a main emptying pipeline. A first emptying pipeline is arranged between the emergency cut-off valve and the first pressure regulating valve, and emergency emptying is carried out through a first safety valve when the line is in overpressure; a second emptying pipeline is arranged between the first gate valve and the gas-liquid separator, and emergency emptying is carried out through a second safety valve when the line is in overpressure; before entering the downstream air port, a manual emptying is arranged, and when the line is in overpressure, the gate valve and the stop valve are opened to empty.
Description
Technical Field
The invention belongs to the technical field of natural gas pressure regulation, and particularly relates to a natural gas pressure regulating skid-mounted device with a multistage safety protection function.
Background
At present, natural gas for production in a natural gas station mainly comprises a heating furnace, a gas generator, a discharge torch and the like, and natural gas for life mainly comprises a kitchen in the station, heating and the like.
The natural gas of the station comes from a treatment plant, has higher pressure and is supplied to various gas consumption points after pressure regulation is needed. The fuel gas comes the gas and need set up safety arrangement after the pressure regulating, avoids pipeline jam or the pressure that the pressure-regulating valve became invalid and arouses too high.
Disclosure of Invention
The invention aims to provide a natural gas pressure regulating skid-mounted device with a multi-stage safety protection function, which is used for regulating and metering the pressure of natural gas and avoiding overhigh pressure caused by pipeline blockage or failure of a pressure regulating valve.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a natural gas pressure regulating skid-mounted device with a multistage safety protection function comprises a skid seat, a gas-liquid separator and a plurality of pipelines, wherein the gas-liquid separator and the plurality of pipelines are arranged on the skid seat, and the plurality of pipelines comprise an air inlet pipeline, a pressure reducing pipeline, a first output branch, a second output branch and an emptying main pipeline;
one end of the pressure reduction pipeline is communicated with the air inlet pipeline, the other end of the pressure reduction pipeline is connected with the gas-liquid separator, the first output branch and the second output branch are both communicated with the air outlet of the gas-liquid separator, the air inlet pipeline comprises an emergency cut-off valve, the pressure reduction pipeline comprises a first ball valve, a first pressure regulating valve and a first gate valve which are sequentially arranged along the gas flowing direction, and the first output branch and the second output branch both comprise a stop valve and a ball valve which are sequentially arranged along the gas flowing direction;
the emergency cutoff valve is characterized in that a first emptying pipeline is arranged between the emergency cutoff valve and the first ball valve, a second emptying pipeline is arranged between the first gate valve and the gas-liquid separator, a third emptying pipeline is arranged between the second ball valve and a first gas output port of the first output branch, a fourth emptying pipeline is arranged between the third ball valve and a second gas output port of the second output branch, and the first emptying pipeline, the second emptying pipeline, the third emptying pipeline and the fourth emptying pipeline are communicated with a main emptying pipeline.
First output branch and second output branch all still include along flowmeter gate valve and the flowmeter that gas flow direction set gradually, the flowmeter is located before the stop valve.
And the first emptying pipeline and the second emptying pipeline respectively comprise a second gate valve, a safety valve and a third gate valve which are sequentially arranged along the gas flowing direction.
And the third emptying pipeline and the fourth emptying pipeline both comprise a fourth gate valve and a stop valve which are sequentially arranged along the gas flowing direction.
The pressure reduction pipeline, the first output branch and the second output branch are all provided with standby pipelines connected in parallel.
The first emptying pipeline and the second emptying pipeline are both provided with standby pipelines connected in parallel, and the standby pipelines comprise ball valves and stop valves which are sequentially arranged along the gas flowing direction.
The first pressure regulating valve is an automatic pressure regulating valve, and the automatic pressure regulating valve is interlocked with the emergency cut-off valve.
The invention has the beneficial effects that: the natural gas pressure regulating skid-mounted device has a multi-stage safety protection function, a first emptying pipeline is arranged between an emergency cut-off valve and a first pressure regulating valve, and emergency emptying is performed through a first safety valve when the line is in overpressure; a second emptying pipeline is arranged between the first gate valve and the gas-liquid separator, and emergency emptying is carried out through a second safety valve when the line is in overpressure; before entering the downstream air port, a manual emptying is arranged, and when the line has overpressure, the gate valve and the stop valve are opened for emptying.
The following will be described in further detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of the present invention.
In the figure: 1. an interface; 2. an emergency shut-off valve; 3. a first ball valve; 4. a first pressure regulating valve; 5. a first gate valve; 6. a fifth ball valve; 7. a second pressure regulating valve; 8. a seventh gate valve; 9. a gas-liquid separator; 10. a first flow meter gate valve; 11. a first flow meter; 12. a first shut-off valve; 13. a fifth gate valve; 14. a second ball valve; 15. a first gas outlet; 16. a second flow meter gate valve; 17. a second flow meter; 18. a second stop valve; 19. a sixth gate valve; 20. a third ball valve; 21. a second gas outlet; 22. a drain ball valve; 23. a second gate valve a; 24. a first safety valve; 25. a third gate valve a; 26. a pneumatic ball valve; 27. a fifth stop valve; 28. a second gate valve b; 29. a second relief valve; 30. a third gate valve b; 31. a fourth ball valve; 32. a sixth stop valve; 33. a fourth gate valve a; 34. a third stop valve; 35. a fourth gate valve b; 36. and a fourth stop valve.
Detailed Description
Example 1:
the embodiment provides a natural gas pressure regulating skid-mounted device with a multistage safety protection function, which comprises a skid seat, a gas-liquid separator 9 arranged on the skid seat and a plurality of pipelines, wherein the plurality of pipelines comprise an air inlet pipeline, a pressure reducing pipeline, a first output branch, a second output branch and a main emptying pipeline;
one end of the pressure reducing pipeline is communicated with an air inlet pipeline, the other end of the pressure reducing pipeline is connected with a gas-liquid separator 9, the first output branch and the second output branch are both communicated with an air outlet of the gas-liquid separator 9, the air inlet pipeline comprises an emergency cut-off valve 2, the pressure reducing pipeline comprises a first ball valve 3, a first pressure regulating valve 4 and a first gate valve 5 which are sequentially arranged along the gas flowing direction, and the first output branch and the second output branch comprise a stop valve and a ball valve which are sequentially arranged along the gas flowing direction;
be equipped with first unloading pipeline between urgent shut-off valve 2 and the first ball valve 3, be equipped with the second unloading pipeline between first gate valve 5 and the vapour and liquid separator 9, be equipped with the third unloading pipeline between the first gas delivery outlet 15 of second ball valve 14 and first output branch, be equipped with the fourth unloading pipeline between the second gas delivery outlet 21 of third ball valve 20 and second output branch, first unloading pipeline, second unloading pipeline, third unloading pipeline, fourth unloading pipeline all communicate with the main pipeline of unloading.
The working process is as follows: the gas coming from a treatment plant enters an air inlet pipeline through a connector 1, enters a pressure reduction pipeline after passing through an emergency cut-off valve 2, enters a gas-liquid separator 9 through a first gate valve 5 after being reduced in pressure by a first pressure regulating valve 4, liquid drops in the gas are separated, the liquid is discharged through a liquid discharge ball valve 22 at the bottom of the gas-liquid separator 9, and the separated gas is output through a first output branch and a second output branch and enters downstream through a first gas output port 15 and a second gas output port 21 respectively.
The natural gas pressure regulating skid-mounted device has a multi-stage safety protection function, a first emptying pipeline is arranged between the emergency block valve 2 and the first pressure regulating valve 4, and emergency emptying is performed through a first safety valve 24 when the line is in overpressure; a second emptying pipeline is arranged between the first gate valve 5 and the gas-liquid separator 9, and emergency emptying is performed through a second safety valve 29 when the line is in overpressure; before entering the downstream air port, a manual emptying is arranged, and when the line is in overpressure, the gate valve and the stop valve are opened to empty.
Example 2:
on the basis of embodiment 1, this embodiment provides a natural gas pressure regulating skid-mounted device with multistage safety protection function, first output branch and second output branch all still include along flowmeter gate valve and the flowmeter that gas flow direction set gradually, the flowmeter is located before the stop valve. The pressure regulation and the metering can be realized.
And the first emptying pipeline and the second emptying pipeline respectively comprise a second gate valve, a safety valve and a third gate valve which are sequentially arranged along the gas flowing direction.
And the third emptying pipeline and the fourth emptying pipeline both comprise a fourth gate valve and a stop valve which are sequentially arranged along the gas flow direction.
As shown in fig. 1, the first output branch comprises a first flowmeter gate valve 10, a first flowmeter 11, a first stop valve 12 and a second ball valve 14 which are arranged in sequence along the gas flow direction; the second output branch comprises a second flowmeter gate valve 16, a second flowmeter 17, a second stop valve 18 and a third ball valve 20 which are sequentially arranged along the gas flow direction; the first emptying pipeline comprises a second gate valve a 23, a first safety valve 24 and a third gate valve a 25 which are arranged in sequence along the gas flowing direction; the second emptying pipeline comprises a second gate valve b 28, a second safety valve 29 and a third gate valve b 30 which are arranged in sequence along the gas flowing direction; the third emptying pipeline comprises a fourth gate valve a 33 and a third stop valve 34 which are arranged in sequence along the gas flowing direction; the fourth flare line includes a fourth gate valve b 35 and a fourth stop valve 36 which are provided in this order in the gas flow direction.
In the present embodiment, the second gate valve includes a second gate valve a 23 and a second gate valve b 28; the third gate valve comprises a third gate valve a 25 and a third gate valve b 30; the fourth gate valve includes a fourth gate valve a 33 and a fourth gate valve b 35.
Example 3:
on the basis of embodiment 2, this embodiment provides a natural gas pressure regulating skid-mounted device with a multistage safety protection function as shown in fig. 1, where the depressurization pipeline, the first output branch and the second output branch are all provided with standby pipelines connected in parallel.
The first emptying pipeline and the second emptying pipeline are both provided with standby pipelines connected in parallel, and the standby pipelines comprise ball valves and stop valves which are sequentially arranged along the gas flowing direction.
As shown in fig. 1, the pressure reducing pipeline has two paths, one for one, where one path of the pressure reducing pipeline includes a first ball valve 3, a first pressure regulating valve 4 and a first gate valve 5, which are sequentially arranged along the gas flowing direction, and the other path includes a fifth ball valve 6, a second pressure regulating valve 7 and a seventh gate valve 8, which are sequentially arranged along the gas flowing direction; the first output branch comprises two paths, one path is used and the other path is spare, the first output branch comprises a first flowmeter gate valve 10, a first flowmeter 11, a first stop valve 12 and a second ball valve 14 which are sequentially arranged along the gas flowing direction, and the other path comprises a fifth gate valve 13; the second output branch has two paths, one path is used and one is spare, one path includes a second flowmeter gate valve 16, a second flowmeter 17, a second stop valve 18 and a third ball valve 20 which are arranged in sequence along the gas flow direction, and the other path includes a sixth gate valve 19.
The first emptying pipeline has two paths, one path is used and the other path is spare, one path comprises a second gate valve a 23, a first safety valve 24 and a third gate valve a 25 which are sequentially arranged along the gas flowing direction, and the other path comprises a pneumatic ball valve 26 and a fifth stop valve 27 which are sequentially arranged along the gas flowing direction; emergency evacuation is performed by means of the first safety valve 24 when the line is over-pressurized; when a line leaks or the first safety valve 24 is being serviced for replacement, the pneumatic ball valve 26 is opened for remote venting.
The second emptying pipeline has two paths, one path is used and the other path is spare, the second emptying pipeline comprises a second gate valve b 28, a second safety valve 29 and a third gate valve b 30 which are sequentially arranged along the gas flowing direction, and the other path comprises a fourth ball valve 31 and a sixth stop valve 32 which are sequentially arranged along the gas flowing direction. When the line is over-pressurized, emergency evacuation is performed through the second safety valve 29; when the line leaks or the second relief valve 29 is being serviced for replacement, the fourth ball valve 31 is opened for manual venting.
In the present exemplary embodiment, the first pressure regulating valve 4 is an automatic pressure regulating valve, which is interlocked with the emergency shut-off valve 2. When the pressure after pressure regulation does not meet the requirement, automatically regulating the opening of the pressure regulating valve so as to enable the pressure to meet the requirement; when the pressure after pressure regulation is too large, the emergency stop valve 2 is automatically closed.
The automatic pressure regulating valve is a commercially available product, and the parts not specifically described in the embodiment belong to the common general knowledge and the common knowledge in the technical field, and are not described in detail herein.
The above examples are merely illustrative of the present invention and should not be construed as limiting the scope of the invention, which is intended to be covered by the claims.
Claims (5)
1. The utility model provides a natural gas pressure regulating skid-mounted device with multistage safety protection function which characterized in that: the device comprises a prying seat, a gas-liquid separator (9) arranged on the prying seat and a plurality of pipelines, wherein the plurality of pipelines comprise an air inlet pipeline, a pressure reduction pipeline, a first output branch, a second output branch and a main emptying pipeline;
one end of the pressure reduction pipeline is communicated with the air inlet pipeline, the other end of the pressure reduction pipeline is connected with the gas-liquid separator (9), the first output branch and the second output branch are communicated with an air outlet of the gas-liquid separator (9), the air inlet pipeline comprises an emergency cut-off valve (2), the pressure reduction pipeline comprises a first ball valve (3), a first pressure regulating valve (4) and a first gate valve (5) which are sequentially arranged along the gas flowing direction, and the first output branch and the second output branch comprise a stop valve and a ball valve which are sequentially arranged along the gas flowing direction;
a first emptying pipeline is arranged between the emergency cut-off valve (2) and the first ball valve (3), a second emptying pipeline is arranged between the first gate valve (5) and the gas-liquid separator (9), a third emptying pipeline is arranged between the second ball valve (14) and the first gas output port (15) of the first output branch, a fourth emptying pipeline is arranged between the third ball valve (20) and the second gas output port (21) of the second output branch, and the first emptying pipeline, the second emptying pipeline, the third emptying pipeline and the fourth emptying pipeline are all communicated with a main emptying pipeline;
first output branch road and second output branch road all still include along flowmeter gate valve and the flowmeter that gas flow direction set gradually, the flowmeter is located before the stop valve, first unloading pipeline and second unloading pipeline all include along second gate valve, relief valve, the third gate valve that gas flow direction set gradually.
2. The natural gas pressure regulating skid-mounted device with the multistage safety protection function as claimed in claim 1, characterized in that: and the third emptying pipeline and the fourth emptying pipeline both comprise a fourth gate valve and a stop valve which are sequentially arranged along the gas flowing direction.
3. The natural gas pressure regulating skid-mounted device with the multistage safety protection function as claimed in claim 1, wherein: and the pressure reduction pipeline, the first output branch and the second output branch are all provided with standby pipelines connected in parallel.
4. The natural gas pressure regulating skid-mounted device with the multistage safety protection function as claimed in claim 1, wherein: the first emptying pipeline and the second emptying pipeline are both provided with standby pipelines connected in parallel, and the standby pipelines comprise ball valves and stop valves which are sequentially arranged along the gas flowing direction.
5. The natural gas pressure regulating skid-mounted device with the multistage safety protection function as claimed in claims 1 to 4, wherein: the first pressure regulating valve (4) is an automatic pressure regulating valve, and the automatic pressure regulating valve is interlocked with the emergency shut-off valve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710030462.1A CN106870945B (en) | 2017-01-17 | 2017-01-17 | Natural gas pressure regulating skid-mounted device with multistage safety protection function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710030462.1A CN106870945B (en) | 2017-01-17 | 2017-01-17 | Natural gas pressure regulating skid-mounted device with multistage safety protection function |
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| CN106870945A CN106870945A (en) | 2017-06-20 |
| CN106870945B true CN106870945B (en) | 2023-03-10 |
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| CN201710030462.1A Active CN106870945B (en) | 2017-01-17 | 2017-01-17 | Natural gas pressure regulating skid-mounted device with multistage safety protection function |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167647A (en) * | 2018-01-22 | 2018-06-15 | 北京东方通捷燃气有限责任公司 | A kind of natural gas is stood to a high-profile |
| CN110500507A (en) * | 2018-05-16 | 2019-11-26 | 中蔷（上海）电子系统工程有限公司 | A kind of Underground pipeline real-time management system and method based on Internet of Things |
| CN109210376B (en) * | 2018-11-02 | 2023-05-16 | 中国石油天然气集团有限公司 | Online hot standby pressure regulating device of gas pipeline |
| CN114370609A (en) * | 2022-02-21 | 2022-04-19 | 烟台杰瑞石油装备技术有限公司 | Pressure regulating system and pressure regulating system control method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0988724A (en) * | 1995-09-27 | 1997-03-31 | Tokyo Gas Co Ltd | Fuel supply system of compressed natural gas automobile |
| CN103527927A (en) * | 2012-07-04 | 2014-01-22 | 中国石油天然气股份有限公司 | Skid-mounted natural gas gathering and transportation device |
-
2017
- 2017-01-17 CN CN201710030462.1A patent/CN106870945B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0988724A (en) * | 1995-09-27 | 1997-03-31 | Tokyo Gas Co Ltd | Fuel supply system of compressed natural gas automobile |
| CN103527927A (en) * | 2012-07-04 | 2014-01-22 | 中国石油天然气股份有限公司 | Skid-mounted natural gas gathering and transportation device |
Non-Patent Citations (1)
| Title |
|---|
| 橇装式调压装置在天然气管道站场的应用;王建国;《管道技术与设备》;20090315(第02期);全文 * |
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