CN112145817A - Gas collecting pipeline of natural gas - Google Patents
Gas collecting pipeline of natural gas Download PDFInfo
- Publication number
- CN112145817A CN112145817A CN202011088820.2A CN202011088820A CN112145817A CN 112145817 A CN112145817 A CN 112145817A CN 202011088820 A CN202011088820 A CN 202011088820A CN 112145817 A CN112145817 A CN 112145817A
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- China
- Prior art keywords
- pipeline
- natural gas
- gas
- explosion venting
- explosion
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
- F16L53/70—Cooling of pipes or pipe systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipeline Systems (AREA)
Abstract
The invention discloses a gas collecting pipeline for natural gas, which comprises an inner pipeline, a first outer pipeline and a second outer pipeline, wherein the inner pipeline, the first outer pipeline and the second outer pipeline are sequentially arranged from inside to outside; cooling water is introduced into the first outer pipeline; and inert gas is introduced into the second outer pipeline. The natural gas after the first explosion venting cannot contact with air through the isolation of inert gas, so that secondary explosion is avoided, and the safety is greatly improved; cooling water which circularly flows is introduced into the first outer pipeline, so that the temperature of the inner pipeline is reduced, and the probability of natural gas explosion is reduced; the first explosion venting door, the second explosion venting door and the third explosion venting door can ensure that the natural gas is subjected to secondary explosion venting for three times without damaging a pipeline; the inert gas is in the interlayer, and the purity of the natural gas is not influenced.
Description
Technical Field
The invention relates to the technical field of natural gas transportation, in particular to a natural gas collecting pipeline.
Background
Natural gas explosion requires several conditions: 1. fully mixed with air 2, the ratio of the two is within the explosion limit range (the explosion can not happen when the air is too much or too little) 3, and reaches a certain temperature.
The existing natural gas conveying pipeline is generally a single-layer pipeline, generally, before the natural gas conveying pipeline is not ventilated, the pipeline is filled with air, so that the air in the original pipeline is mixed with natural gas to encounter static electricity or electric sparks to explode in order to prevent the direct natural gas filling, the air in the original pipeline is replaced by filling nitrogen firstly, however, the nitrogen and the natural gas are directly filled in the pipeline to be mixed, on one hand, the purity of the natural gas can be reduced, on the other hand, due to the adoption of the single-layer pipeline, once higher pressure is generated after the natural gas explosion, the air is directly filled after pressure relief, the residual natural gas can be contacted with the air to explode secondarily, and the secondary explosion can generate greater power, so that casualties and property loss are caused.
The gas collecting pipeline of the natural gas is a pipeline from a gas field wellhead device to a gas treatment plant or a starting pressure gas station through a gas collecting station, and is mainly used for collecting the untreated natural gas extracted from a stratum. Due to the high pressure of gas wells, great care is taken in transportation.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the gas collecting pipeline overcomes the defects of the prior art, has high safety and can convey natural gas of pure natural gas.
The technical scheme adopted by the invention for solving the technical problems is as follows: a gas collecting pipeline for natural gas comprises an inner pipeline, a first outer pipeline and a second outer pipeline which are sequentially arranged from inside to outside, wherein natural gas is introduced into the inner pipeline, and at least one first explosion venting door is arranged on the inner pipeline; cooling water is introduced into the first outer pipeline; and inert gas is introduced into the second outer pipeline.
Furthermore, at least one second explosion venting door is arranged on the first outer pipeline; and at least one third explosion venting door is arranged on the second outer pipeline.
Further, the explosion venting pressures of the first explosion venting door, the second explosion venting door and the third explosion venting door are reduced in sequence.
Further, the first outer pipeline is formed by splicing two semicircular pipelines.
Further, one end parts of the two semicircular pipelines are communicated.
Further, the inner pipeline, the first outer pipeline and the second outer pipeline are connected into a whole by multiple sections of pipe bodies through splicing.
Further, the inert gas is nitrogen or argon.
Further, the inner pipeline is connected with a vacuum pumping device.
The invention has the beneficial effects that:
1. the natural gas after the first explosion venting cannot contact with air through the isolation of inert gas, so that secondary explosion is avoided, and the safety is greatly improved;
2. cooling water which circularly flows is introduced into the first outer pipeline, so that the temperature of the inner pipeline is reduced, and the probability of natural gas explosion is reduced;
3. the first explosion venting door, the second explosion venting door and the third explosion venting door can ensure that the natural gas is subjected to secondary explosion venting for three times without damaging a pipeline;
4. by arranging the three-layer and double-layer pipeline structure, inert gas and flowing circulating water are introduced into the interlayer, so that external air can be prevented from entering the inner pipeline and contacting with natural gas, and the sealing property is greatly improved;
5. the inert gas is in the interlayer, and the purity of the natural gas is not influenced.
Drawings
Fig. 1 is a schematic cross-sectional view of the present embodiment.
In the figure: 1-a first outer pipeline, 2-an inner pipeline, 3-a first explosion venting door, 4-a second explosion venting door, 5-a third explosion venting door, and 6-a second outer pipeline.
Detailed Description
The invention is further explained with reference to the drawings and the embodiments.
Referring to fig. 1: a gas collecting pipeline for natural gas comprises an inner pipeline 2, a first outer pipeline 1 and a second outer pipeline 6 which are sequentially arranged from inside to outside, wherein natural gas is introduced into the inner pipeline 2, and at least one first explosion venting door 3 is arranged on the inner pipeline 2; cooling water is introduced into the first outer pipeline 1; and inert gas is introduced into the second outer pipeline 6.
The scheme has the following advantages; by arranging the multilayer pipeline structure and introducing the inert gas into the interlayer, on one hand, external air can be prevented from entering the inner pipeline to be contacted with the air, and the inert gas in the interlayer can not influence the purity of natural gas; on the other hand, the natural gas after explosion venting can not be contacted with the air, but is isolated by the inert gas and the cooling water, so that secondary explosion can not occur, and the safety coefficient is greatly improved. Through setting up first explosion vent and can make the gaseous pressure in the interior conduit in time release when too big to the protection interior conduit can not receive the damage, also enables the natural gas in time to mix with inert gas and completely cuts off the air.
In this embodiment, the inner pipe 2, the first outer pipe 1 and the second outer pipe 6 are connected to each other by a plurality of sections of pipes through splicing. Preferably, a first explosion venting door 3 is arranged on each interval of two tube bodies on the inner pipeline 2, a second explosion venting door 4 is arranged on each interval of two tube bodies on the first outer pipeline 1, and a third explosion venting door 5 is arranged on each interval of three tube bodies on the second outer pipeline 6. The arrangement of the explosion venting doors is convenient for venting and exploding the gas in the interlayer, so that the accumulation of the internal gas is prevented. And because the natural gas is mixed with the cooling water and the inert gas, explosion can not be generated outside. The inert gas in this embodiment is preferably nitrogen; the cooling water is normal temperature tap water.
And the explosion venting pressures of the first explosion venting door, the second explosion venting door and the third explosion venting door are reduced in sequence. Because the pressure can greatly reduced after the natural gas is let out and exploded for the first time, therefore let out and explode the pressure only be less than let out and explode the pressure of first let out and explode door 4 for second let out and explode the door 5 and open, and in a similar way, let out and explode the pressure that lets out of the door and need be less than let out and explode the pressure of second let out and explode the door for the third let out.
In this embodiment, first outer pipeline is formed for two semi-circular pipeline concatenations, and both communicate at the one end tip of two semi-circular pipelines, can be so that the cooling water at first outer pipeline internal circulation flow, can be further cool down the temperature of inner tube way. The reason why the layer of cooling pipeline is arranged here is that the explosion of the natural gas needs to reach a certain temperature, so that the temperature of the inner pipeline is reduced by starting from the aspect of reducing the temperature, and the probability of natural gas explosion is reduced.
In this embodiment, the inner pipeline is connected to a vacuum pumping device, and before the natural gas is input into the inner pipeline, the inner pipeline is pumped to vacuum to prevent the natural gas from contacting with air to cause explosion.
The present invention is not limited to the above embodiments, and various combinations and modifications of the above technical features may be provided for those skilled in the art, and modifications, variations, equivalents, or uses of the structure or method of the present invention in other fields without departing from the spirit and scope of the present invention are included in the protection scope of the present invention.
Claims (8)
1. A gas collection pipeline for natural gas, characterized in that: the explosion-proof device comprises an inner pipeline, a first outer pipeline and a second outer pipeline which are sequentially arranged from inside to outside, wherein natural gas is introduced into the inner pipeline, and at least one first explosion venting door is arranged on the inner pipeline; cooling water is introduced into the first outer pipeline; and inert gas is introduced into the second outer pipeline.
2. Gas collection pipeline of natural gas according to claim 1, characterized in that: the first outer pipeline is provided with at least one second explosion venting door; and at least one third explosion venting door is arranged on the second outer pipeline.
3. Gas collection pipeline of natural gas according to claim 2, characterized in that: and the explosion venting pressures of the first explosion venting door, the second explosion venting door and the third explosion venting door are reduced in sequence.
4. Gas collection pipeline of natural gas according to claim 1, characterized in that: the first outer pipeline is formed by splicing two semicircular pipelines.
5. Gas collection pipeline of natural gas according to claim 4, characterized in that: one end parts of the two semicircular pipelines are communicated.
6. A gas collection pipeline for natural gas according to claim 1, 2 or 3, characterized in that: the inner pipeline, the first outer pipeline and the second outer pipeline are connected into a whole by multiple sections of pipe bodies through splicing.
7. A gas collection pipeline for natural gas according to claim 1, 2 or 3, characterized in that: the inert gas is nitrogen or argon.
8. A gas collection pipeline for natural gas according to claim 1, 2 or 3, characterized in that: the inner pipeline is connected with a vacuum pumping device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011088820.2A CN112145817A (en) | 2020-10-13 | 2020-10-13 | Gas collecting pipeline of natural gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011088820.2A CN112145817A (en) | 2020-10-13 | 2020-10-13 | Gas collecting pipeline of natural gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112145817A true CN112145817A (en) | 2020-12-29 |
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ID=73953190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011088820.2A Pending CN112145817A (en) | 2020-10-13 | 2020-10-13 | Gas collecting pipeline of natural gas |
Country Status (1)
| Country | Link |
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| CN (1) | CN112145817A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2199581A1 (en) * | 1972-09-15 | 1974-04-12 | Olivet Jacques | |
| WO2004090405A1 (en) * | 2003-04-07 | 2004-10-21 | Juhasz Laszlo | A conduit system for transporting a gaseous medium, suitable for intramural installation |
| US20120247566A1 (en) * | 2009-11-30 | 2012-10-04 | Areva | Tubular pipe for transporting liquid sodium |
| CN204164673U (en) * | 2014-09-05 | 2015-02-18 | 西安天衡计量仪表有限公司 | A kind of anti-leak natural gas line for pipe network monitor system |
| CN204187281U (en) * | 2014-10-29 | 2015-03-04 | 刘复合 | A kind of pressure relief system for high-pressure gas long distance pipeline |
| CN204879244U (en) * | 2015-07-31 | 2015-12-16 | 中铁城市规划设计研究院有限公司 | City carries for natural gas copper to mould composite pipe |
| CN107795769A (en) * | 2016-09-05 | 2018-03-13 | 空中客车运营简化股份公司 | Pipe-line system with leak detecting device |
| CN209130320U (en) * | 2018-09-28 | 2019-07-19 | 江苏兴洋管业股份有限公司 | A kind of anti-high-pressure natural gas transport pipeline |
| CN209444898U (en) * | 2019-01-11 | 2019-09-27 | 黄李葳 | A kind of natural gas Double-sleeve device |
| CN210485012U (en) * | 2019-09-26 | 2020-05-08 | 伊犁志成兴型材有限公司 | Underground buries and uses anticorrosive pipeline |
| CN211350324U (en) * | 2020-01-16 | 2020-08-25 | 孙铭阳 | Explosion-proof pressure release system of transformer |
-
2020
- 2020-10-13 CN CN202011088820.2A patent/CN112145817A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2199581A1 (en) * | 1972-09-15 | 1974-04-12 | Olivet Jacques | |
| WO2004090405A1 (en) * | 2003-04-07 | 2004-10-21 | Juhasz Laszlo | A conduit system for transporting a gaseous medium, suitable for intramural installation |
| US20120247566A1 (en) * | 2009-11-30 | 2012-10-04 | Areva | Tubular pipe for transporting liquid sodium |
| CN204164673U (en) * | 2014-09-05 | 2015-02-18 | 西安天衡计量仪表有限公司 | A kind of anti-leak natural gas line for pipe network monitor system |
| CN204187281U (en) * | 2014-10-29 | 2015-03-04 | 刘复合 | A kind of pressure relief system for high-pressure gas long distance pipeline |
| CN204879244U (en) * | 2015-07-31 | 2015-12-16 | 中铁城市规划设计研究院有限公司 | City carries for natural gas copper to mould composite pipe |
| CN107795769A (en) * | 2016-09-05 | 2018-03-13 | 空中客车运营简化股份公司 | Pipe-line system with leak detecting device |
| CN209130320U (en) * | 2018-09-28 | 2019-07-19 | 江苏兴洋管业股份有限公司 | A kind of anti-high-pressure natural gas transport pipeline |
| CN209444898U (en) * | 2019-01-11 | 2019-09-27 | 黄李葳 | A kind of natural gas Double-sleeve device |
| CN210485012U (en) * | 2019-09-26 | 2020-05-08 | 伊犁志成兴型材有限公司 | Underground buries and uses anticorrosive pipeline |
| CN211350324U (en) * | 2020-01-16 | 2020-08-25 | 孙铭阳 | Explosion-proof pressure release system of transformer |
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Application publication date: 20201229 |
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| RJ01 | Rejection of invention patent application after publication |