CN201628078U - Pipeline liquefied gas decompression device - Google Patents
Pipeline liquefied gas decompression device Download PDFInfo
- Publication number
- CN201628078U CN201628078U CN201020003426XU CN201020003426U CN201628078U CN 201628078 U CN201628078 U CN 201628078U CN 201020003426X U CN201020003426X U CN 201020003426XU CN 201020003426 U CN201020003426 U CN 201020003426U CN 201628078 U CN201628078 U CN 201628078U
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- CN
- China
- Prior art keywords
- valve
- pipeline
- liquefied gas
- reduction valve
- pressure
- Prior art date
- 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.)
- Expired - Fee Related
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
A pipeline liquefied gas decompression device belongs to the technical field of combustion and aims to guarantee safe liquefied gas supply of district pipelines and achieve the purposes of no excessive pressure and no gas interruption. The technical scheme of the device includes that a gas inlet pipeline and a gas inlet of a decompression valve are horizontally arranged, a three-way connecting bypass pipe is mounted in front of a primary decompression valve, and a valve is mounted on the bypass pipe. A drainage valve and a drainage pipe are further mounted at the back of a system to guarantee safety. The pipeline liquefied gas decompression device has the advantages of simple, practical and safe pipeline system, and is suitable for installation of pipeline liquefied gas.
Description
Technical field
The present invention relates to a kind of pipeline liquefied gas decompressor, belong to field of combustion technology.
Background technique
At present, the sub-district pipeline liquefied gas generally is designed to the secondary decompression, once reduce pressure and reduce to 0.4MPa from 1.6MPa, the secondary decompression is reduced to from 0.4MPa and is sent into the user below the 0.004MPa, but the north of china in winter temperature is lower, pressure generally is lower than 0.4MPa, and a reduction valve can not be opened and influence air feed.
Summary of the invention
The objective of the invention is: ensure the safe way of sub-district pipeline liquefied gas, the purpose that reaches superpressure not and do not stop the supple of gas or steam.
Technological scheme of the present invention is as follows: with air inlet pipeline and reduction valve suction port horizontal arrangement, threeway is installed before a reduction valve connects bypass tube, mounted valve on bypass tube connects the secondary reduction valve again by threeway then, sends into the user after the decompression.For guaranteeing that safety also is equipped with exhaust-valve, emptying pipe at the system rear portion.Be in operation when pressure is higher than 0.4MPa, close the bypass tube valve, liquid gas again by the secondary reduction valve, drops to pressure and sends into the user below the 0.004MPa after the decompression directly by a reduction valve.
When winter, pressure was lower than 0.4MPa, open the bypass tube valve, liquid gas directly enters the secondary reduction valve without a reduction valve by bypass tube, reduces pressure below the 0.004MPa, sends into the user.
Take place as fortuitous events such as fire, when winter, pressure was higher than 0.4MPa, the little shortcut of resistance is made in liquefaction leave with rage, directly open reduction valve No. one time, by the secondary reduction valve, surpass designing requirement again, then open the exhaust-valve at system rear portion as flow of lpg and pressure, enter atmosphere by emptying pipe, guarantee safety.
As environmental constraint, can be with secondary reduction valve flexible arrangement, as long as be connected on reduction valve and bypass tube back.
Advantage of the present invention is: pipe-line system is simple, practical, safety.
The present invention is applicable to the installation of pipeline liquefied gas.
Description of drawings
Fig. 1 is the elevation of pipeline liquefied gas decompressor.
1: suction port 2: main pipe 3: pressure gauge 4: threeway
5: reduction valve 6: bypass line valve 7: threeway 8: secondary reduction valve
9: pressure gauge 10: emptying pipe 11: exhaust-valve 12: threeway
13: the pipeline valve 14 of registering one's residence: the pipeline of registering one's residence
Embodiment
Liquid gas is sent into main pipe 2 from suction port 1, observe the pipeline inlet pressure by pressure gauge 3, when pressure surpasses 0.4MPa, close bypass line valve 6, liquid gas enters secondary reduction valve 8 through a reduction valve 5, and pressure gauge 9 shows that pressure is lower than 0.004MPa, often open the pipeline valve 13 of registering one's residence, liquid gas enters the user by the pipeline 14 of registering one's residence.
When winter, pressure was lower than 0.4MPa, open bypass tube valve 6, liquid gas is walked around a reduction valve from bypass tube and is directly entered the secondary reduction valve, and after the decompression, pressure gauge 9 shows that pressure is lower than 0.004MPa, and liquid gas is sent into the user.
When winter, pressure surpassed 0.4MPa suddenly, the less shortcut of resistance was made in liquefaction leave with rage, directly opens reduction valve No. one time, by the secondary reduction valve, surpass designing requirement again, then open exhaust-valve 11 as flow and pressure, by emptying pipe 10, the superpressure liquid gas is entered atmosphere.
Claims (1)
1. pipeline liquefied gas decompressor, comprise pipeline, valve, threeway, it is characterized in that:, threeway is installed before a reduction valve connects bypass tube air inlet pipeline and reduction valve suction port horizontal arrangement, mounted valve on bypass tube is installed exhaust-valve on emptying pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020003426XU CN201628078U (en) | 2010-01-01 | 2010-01-01 | Pipeline liquefied gas decompression device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020003426XU CN201628078U (en) | 2010-01-01 | 2010-01-01 | Pipeline liquefied gas decompression device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201628078U true CN201628078U (en) | 2010-11-10 |
Family
ID=43059472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020003426XU Expired - Fee Related CN201628078U (en) | 2010-01-01 | 2010-01-01 | Pipeline liquefied gas decompression device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201628078U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867898A (en) * | 2014-02-26 | 2014-06-18 | 昆山宁华消防系统有限公司 | Nitrogen pressure reducing box |
| CN103867897A (en) * | 2014-02-26 | 2014-06-18 | 昆山宁华消防系统有限公司 | Nitrogen depression tank |
| CN109099245A (en) * | 2018-09-30 | 2018-12-28 | 北京石油化工工程有限公司 | hose station system |
-
2010
- 2010-01-01 CN CN201020003426XU patent/CN201628078U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867898A (en) * | 2014-02-26 | 2014-06-18 | 昆山宁华消防系统有限公司 | Nitrogen pressure reducing box |
| CN103867897A (en) * | 2014-02-26 | 2014-06-18 | 昆山宁华消防系统有限公司 | Nitrogen depression tank |
| CN109099245A (en) * | 2018-09-30 | 2018-12-28 | 北京石油化工工程有限公司 | hose station system |
| CN109099245B (en) * | 2018-09-30 | 2024-03-22 | 北京石油化工工程有限公司 | Hose station system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101110 Termination date: 20120101 |