CN111174095A - Natural gas conveying airflow pressure regulating system - Google Patents
Natural gas conveying airflow pressure regulating system Download PDFInfo
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- CN111174095A CN111174095A CN202010009772.7A CN202010009772A CN111174095A CN 111174095 A CN111174095 A CN 111174095A CN 202010009772 A CN202010009772 A CN 202010009772A CN 111174095 A CN111174095 A CN 111174095A
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- pressure
- pipe
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- pressure regulating
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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
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Transport Of Granular Materials (AREA)
- Pipeline Systems (AREA)
Abstract
The invention provides a natural gas conveying airflow pressure regulating system which comprises an airflow inlet pipe, a pressure regulating pipeline and an airflow outlet pipe, wherein the airflow inlet pipe is connected with a natural gas conveying pipeline; the natural gas is gasified and then enters the gas distribution inlet cylinder through the gas flow inlet pipe, the gas distribution inlet cylinder respectively conveys the natural gas into a plurality of pressure regulating pipelines, when parts on one group of pressure regulating pipelines are maintained, pressure regulating work can be carried out through other groups, the pressure regulating efficiency is improved, the stability of pressure regulation is ensured, and the pressure regulated by the pressure regulating pipelines is collected and conveyed to the gas flow outlet pipe through the gas distribution outlet cylinder; the air inlet pipe is provided with a second safety cut-off valve, the pressure regulating pipeline is provided with a first safety cut-off valve, the stability of the on-off of the air flow is guaranteed through the two sets of safety cut-off valves arranged at the front end of the pressure regulator, and the downstream pipeline can be timely disconnected during overpressure.
Description
Technical Field
The invention relates to the technical field of natural gas, in particular to a natural gas conveying airflow pressure regulating system.
Background
In a natural gas conveying system, pressure control is one of key technologies, and a pressure regulating system is required to ensure that a downstream pipeline is not overpressured and can be safely cut off when a pressure regulating device fails besides correctly configuring a pressure control device. The configuration of the pressure regulating system has diversity, the set points and switching modes of various valves with different configurations are different, the continuity of air supply is influenced when the existing pressure regulating equipment fails, and the downstream overpressure cannot be adjusted in time. The invention provides a natural gas conveying airflow pressure regulating system for ensuring that a downstream user provides stable, safe and reliable natural gas.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a natural gas transportation airflow pressure regulating system, so as to solve the problems proposed in the background art.
The technical problem solved by the invention is realized by adopting the following technical scheme: a natural gas conveying airflow pressure regulating system comprises an airflow inlet pipe connected with a natural gas conveying pipeline, a pressure regulating pipeline for regulating the pressure of natural gas and an airflow outlet pipe for conveying the natural gas into a medium-pressure pipe network; the airflow inlet pipe is connected with a plurality of groups of pressure regulating pipelines in parallel through the air distributing inlet cylinder, and the air outlet end of each pressure regulating pipeline is connected with the airflow outlet pipe through the air distributing outlet cylinder; be equipped with inlet valve, gas filter, first safety shut-off valve, voltage regulator and outlet valve on the pressure regulating pipeline in proper order, be equipped with the atmospheric pressure that first manometer is used for detecting before the pressure regulating on the pressure regulating pipeline between gas filter and the first safety shut-off valve, be equipped with the atmospheric pressure that the second manometer is used for detecting after the pressure regulating on the pressure regulating pipeline between voltage regulator and the outlet valve.
The further scheme of the invention is as follows: and the inlet end of the airflow inlet pipe is provided with a second safety shut-off valve, and one side of the airflow inlet pipe, which is positioned on the second safety shut-off valve, is sequentially provided with an inlet insulating joint and an inlet pressure gauge.
The further scheme of the invention is as follows: the gas flow outlet pipe is provided with an outlet insulation joint between the gas flow outlet pipe and the external pipe, the gas flow outlet pipe is sequentially provided with an outlet air pressure meter for detecting outlet pressure and a gas flow meter for detecting flow in the pipe, a diffusing branch pipe is arranged between the outlet pressure meter and the gas flow meter, and the diffusing branch pipe is sequentially provided with a gas outlet valve and a diffusing valve.
The further scheme of the invention is as follows: and pressure sensors are respectively arranged on one sides of the inlet pressure gauge and the outlet barometer, which are close to the pressure regulating pipeline, and the pressure sensors transmit and detect the air pressure data in the pipeline.
The further scheme of the invention is as follows: a through pipe connected with a pressure regulating pipeline in parallel is arranged between the gas distributing inlet cylinder and the gas distributing outlet cylinder and used for directly conveying natural gas, a bypass valve and a manual regulating valve are arranged on the through pipe and used for controlling the on-off of the through pipe, and the bypass valve and the manual regulating valve are positioned on the through pipe and connected in series.
The further scheme of the invention is as follows: the manual regulating valve and the outlet valve are one-way valves.
The further scheme of the invention is as follows: the gas filter is located the both ends on the pressure regulating pipeline and is equipped with the pressure differential branch pipe parallelly connected with the pressure regulating pipeline, the last pressure differential table that has parallelly connected of pressure differential branch pipe, the pressure differential table is parallelly connected and is equipped with the pressure differential valve in the both ends outside of pressure differential branch pipe, the pressure differential table is parallelly connected and is equipped with control flap in the both ends inboard of pressure differential branch pipe.
Compared with the prior art, the invention has the beneficial effects that: the natural gas is gasified and then enters the gas distribution inlet cylinder through the gas flow inlet pipe, the gas distribution inlet cylinder respectively conveys the natural gas into a plurality of pressure regulating pipelines, when parts on one group of pressure regulating pipelines are maintained, pressure regulating work can be carried out through other groups, the pressure regulating efficiency is improved, the stability of pressure regulation is ensured, and the pressure regulated by the pressure regulating pipelines is collected and conveyed to the gas flow outlet pipe through the gas distribution outlet cylinder; the air inlet pipe is provided with a second safety cut-off valve, the pressure regulating pipeline is provided with a first safety cut-off valve, the stability of the on-off of the air flow is guaranteed through the two sets of safety cut-off valves arranged at the front end of the pressure regulator, and the downstream pipeline can be timely disconnected during overpressure.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further described below by combining the specific drawings.
As shown in figure 1 of the drawings, in which,
the embodiment provides a natural gas conveying airflow pressure regulating system, which comprises an airflow inlet pipe 1 connected with a natural gas conveying pipeline, a pressure regulating pipeline 2 for regulating the pressure of natural gas and an airflow outlet pipe 3 for conveying the natural gas into a medium-pressure pipe network; the airflow inlet pipe 1 is connected with a plurality of groups of pressure regulating pipelines 2 in parallel through an air distributing inlet cylinder 11, and the air outlet end of each pressure regulating pipeline 2 is connected with the airflow outlet pipe 3 through an air distributing outlet cylinder 31; an inlet valve 21, a gas filter 22, a first safety shut-off valve 23, a pressure regulator 24 and an outlet valve 25 are sequentially arranged on the pressure regulating pipeline 2, a first pressure gauge 26 is arranged on the pressure regulating pipeline 2 between the gas filter 22 and the first safety shut-off valve 23 and used for detecting the air pressure before pressure regulation, and a second pressure gauge 27 is arranged on the pressure regulating pipeline 2 between the pressure regulator 24 and the outlet valve 25 and used for detecting the air pressure after pressure regulation; specifically, the natural gas enters the branch gas inlet tube 11 through the airflow inlet tube 1 after being gasified, the branch gas inlet tube 11 conveys the natural gas into the plurality of pressure regulating pipelines 2 respectively, and the pressure regulation through the pressure regulating pipelines 2 is collected and conveyed to the airflow outlet tube 3 through the branch gas outlet tube 31 to complete pressure regulation.
In this embodiment, the inlet end of the airflow inlet pipe 1 is provided with a second safety shut-off valve 12, and one side of the airflow inlet pipe 1, which is located at the second safety shut-off valve 12, is sequentially provided with an inlet insulation joint 13 and an inlet pressure gauge 14.
In this embodiment, be equipped with export insulated joint 32 between gas flow outlet pipe 3 and the external pipe, be equipped with the gas flowmeter 34 that is used for detecting export barometer 33 and the interior flow of detection tube of outlet pressure on the gas flow outlet pipe 3 in proper order, be equipped with the branch pipe of diffusing between export manometer 33 and the gas flowmeter 34, be equipped with gas outlet valve 35 and diffuse valve 36 on the branch pipe of diffusing in proper order.
In this embodiment, the inlet pressure gauge 14 and the outlet pressure gauge 33 are respectively provided with a pressure sensor 15 on one side close to the pressure regulating pipeline 2, and the pressure sensors 15 transmit and detect the data of the air pressure in the pipeline.
In this embodiment, a straight pipe 4 connected in parallel with the pressure regulating pipeline 2 is arranged between the gas distributing inlet cylinder 11 and the gas distributing outlet cylinder 31 for directly conveying natural gas, a bypass valve 41 and a manual regulating valve 42 are arranged on the straight pipe 4 for controlling the on-off of the straight pipe 4, and the bypass valve 41 and the manual regulating valve 42 are positioned on the straight pipe 4 and connected in series.
In this embodiment, the manual regulating valve 42 and the outlet valve 25 are check valves to prevent the air flow from flowing back.
In this embodiment, the two ends of the gas filter 22 located on the pressure regulating pipeline 2 are provided with pressure difference branch pipes 28 connected in parallel with the pressure regulating pipeline 2, the pressure difference branch pipes 28 are connected in parallel with pressure difference meters 29, the pressure difference meters 29 are connected in parallel and provided with pressure difference valves 20 outside the two ends of the pressure difference branch pipes 28, the pressure difference meters 29 are connected in parallel and provided with control valves 10 inside the two ends of the pressure difference branch pipes 28, and the pressure difference valves 20 and the control valves 10 are used for controlling the flow direction of gas entering and exiting from the pressure difference branch pipes 28, so as to perform detection.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a natural gas conveying air current pressure regulating system, includes the air inlet pipe who is connected with natural gas conveying pipeline, carries out the pressure regulating pipeline of pressure regulating and carries the air outlet pipe that natural gas got into the middling pressure pipe network, its characterized in that to the natural gas: the airflow inlet pipe is connected with a plurality of groups of pressure regulating pipelines in parallel through the air distributing inlet cylinder, and the air outlet end of each pressure regulating pipeline is connected with the airflow outlet pipe through the air distributing outlet cylinder; be equipped with inlet valve, gas filter, first safety shut-off valve, voltage regulator and outlet valve on the pressure regulating pipeline in proper order, be equipped with the atmospheric pressure that first manometer is used for detecting before the pressure regulating on the pressure regulating pipeline between gas filter and the first safety shut-off valve, be equipped with the atmospheric pressure that the second manometer is used for detecting after the pressure regulating on the pressure regulating pipeline between voltage regulator and the outlet valve.
2. The system for regulating the pressure of a natural gas transportation stream as claimed in claim 1, wherein: and the inlet end of the airflow inlet pipe is provided with a second safety shut-off valve, and one side of the airflow inlet pipe, which is positioned on the second safety shut-off valve, is sequentially provided with an inlet insulating joint and an inlet pressure gauge.
3. The system for regulating the pressure of a natural gas transportation stream as claimed in claim 2, wherein: the gas flow outlet pipe is provided with an outlet insulation joint between the gas flow outlet pipe and the external pipe, the gas flow outlet pipe is sequentially provided with an outlet air pressure meter for detecting outlet pressure and a gas flow meter for detecting flow in the pipe, a diffusing branch pipe is arranged between the outlet pressure meter and the gas flow meter, and the diffusing branch pipe is sequentially provided with a gas outlet valve and a diffusing valve.
4. A natural gas transportation gas stream pressure regulating system as defined in claim 3, wherein: and pressure sensors are respectively arranged on one sides of the inlet pressure gauge and the outlet barometer, which are close to the pressure regulating pipeline, and the pressure sensors transmit and detect the air pressure data in the pipeline.
5. A natural gas transportation gas stream pressure regulating system as defined in claim 3, wherein: a through pipe connected with a pressure regulating pipeline in parallel is arranged between the gas distributing inlet cylinder and the gas distributing outlet cylinder and used for directly conveying natural gas, a bypass valve and a manual regulating valve are arranged on the through pipe and used for controlling the on-off of the through pipe, and the bypass valve and the manual regulating valve are positioned on the through pipe and connected in series.
6. The system for regulating the pressure of a natural gas transportation stream as claimed in claim 5, wherein: the manual regulating valve and the outlet valve are one-way valves.
7. The system for regulating the pressure of a natural gas transportation stream as claimed in claim 1, wherein: the gas filter is located the both ends on the pressure regulating pipeline and is equipped with the pressure differential branch pipe parallelly connected with the pressure regulating pipeline, the last pressure differential table that has parallelly connected of pressure differential branch pipe, the pressure differential table is parallelly connected and is equipped with the pressure differential valve in the both ends outside of pressure differential branch pipe, the pressure differential table is parallelly connected and is equipped with control flap in the both ends inboard of pressure differential branch pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010009772.7A CN111174095A (en) | 2020-01-06 | 2020-01-06 | Natural gas conveying airflow pressure regulating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010009772.7A CN111174095A (en) | 2020-01-06 | 2020-01-06 | Natural gas conveying airflow pressure regulating system |
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| CN111174095A true CN111174095A (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202010009772.7A Pending CN111174095A (en) | 2020-01-06 | 2020-01-06 | Natural gas conveying airflow pressure regulating system |
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| CN (1) | CN111174095A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135792A (en) * | 2021-11-23 | 2022-03-04 | 江西省天然气管道有限公司运营分公司 | Natural gas pipeline conveying system with pressure regulating function |
| CN118009216A (en) * | 2024-01-15 | 2024-05-10 | 广州广钢气体能源股份有限公司 | Subcritical carbon dioxide pressure regulating system and supply system |
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| US20010004903A1 (en) * | 1999-04-16 | 2001-06-28 | Tadahiro Ohmi | Parallel divided flow-type fluid supply apparatus, and fluid-switchable pressure-type flow control method and fluid-switchable pressure-type flow control system for the same fluid supply apparatus |
| CN104654014A (en) * | 2015-03-05 | 2015-05-27 | 四川宏达石油天然气工程有限公司 | Adjusting method and adjusting device for gas inlet of natural gas |
| CN204962299U (en) * | 2015-08-21 | 2016-01-13 | 四川省犍为峨山阀门有限责任公司 | User's gas pressure regulating cabinet system |
| CN205155571U (en) * | 2015-11-06 | 2016-04-13 | 天津华迈燃气装备股份有限公司 | Super wide pressure pressure regulating air feeder of smart about formula |
| CN205261226U (en) * | 2015-11-13 | 2016-05-25 | 天津华迈燃气装备股份有限公司 | Large -scale regulator of brief multi -functional incessant air feed |
| CN205350850U (en) * | 2015-12-28 | 2016-06-29 | 天津华迈燃气装备股份有限公司 | Gasification equipment of double fuel unit is supplied with to tank wagon |
| CN205560284U (en) * | 2016-03-29 | 2016-09-07 | 四川正中能源有限公司 | Continuous pressure regulating system of liquefied natural gas |
| CN209278847U (en) * | 2018-09-14 | 2019-08-20 | 北京市公用事业科学研究所 | The major-minor circuit switching device of Gas Pressure Regulating Equipment |
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2020
- 2020-01-06 CN CN202010009772.7A patent/CN111174095A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010004903A1 (en) * | 1999-04-16 | 2001-06-28 | Tadahiro Ohmi | Parallel divided flow-type fluid supply apparatus, and fluid-switchable pressure-type flow control method and fluid-switchable pressure-type flow control system for the same fluid supply apparatus |
| CN2397354Y (en) * | 1999-11-22 | 2000-09-20 | 启东市海鹰冶金机械厂 | Oxygen pressure automatic regulating valve group |
| CN104654014A (en) * | 2015-03-05 | 2015-05-27 | 四川宏达石油天然气工程有限公司 | Adjusting method and adjusting device for gas inlet of natural gas |
| CN204962299U (en) * | 2015-08-21 | 2016-01-13 | 四川省犍为峨山阀门有限责任公司 | User's gas pressure regulating cabinet system |
| CN205155571U (en) * | 2015-11-06 | 2016-04-13 | 天津华迈燃气装备股份有限公司 | Super wide pressure pressure regulating air feeder of smart about formula |
| CN205261226U (en) * | 2015-11-13 | 2016-05-25 | 天津华迈燃气装备股份有限公司 | Large -scale regulator of brief multi -functional incessant air feed |
| CN205350850U (en) * | 2015-12-28 | 2016-06-29 | 天津华迈燃气装备股份有限公司 | Gasification equipment of double fuel unit is supplied with to tank wagon |
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| CN209278847U (en) * | 2018-09-14 | 2019-08-20 | 北京市公用事业科学研究所 | The major-minor circuit switching device of Gas Pressure Regulating Equipment |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135792A (en) * | 2021-11-23 | 2022-03-04 | 江西省天然气管道有限公司运营分公司 | Natural gas pipeline conveying system with pressure regulating function |
| CN114135792B (en) * | 2021-11-23 | 2024-01-23 | 江西省天然气管道有限公司运营分公司 | Natural gas pipeline conveying system with pressure regulating function |
| CN118009216A (en) * | 2024-01-15 | 2024-05-10 | 广州广钢气体能源股份有限公司 | Subcritical carbon dioxide pressure regulating system and supply system |
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Application publication date: 20200519 |
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| RJ01 | Rejection of invention patent application after publication |