CN203628281U - Natural gas self-pressure-taking pneumatic pressure regulating device with low-pressure pipeline and medium-pressure pipeline - Google Patents
Natural gas self-pressure-taking pneumatic pressure regulating device with low-pressure pipeline and medium-pressure pipeline Download PDFInfo
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- CN203628281U CN203628281U CN201320762017.1U CN201320762017U CN203628281U CN 203628281 U CN203628281 U CN 203628281U CN 201320762017 U CN201320762017 U CN 201320762017U CN 203628281 U CN203628281 U CN 203628281U
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Abstract
A natural gas self-pressure-taking pneumatic pressure regulating device with a low-pressure pipeline and a medium-pressure pipeline comprises a heat exchanger, a natural gas supply pipeline, the self-pressure-taking low-pressure pipeline and the self-pressure-taking medium-pressure pipeline. The natural gas supply pipeline is formed by connecting a natural gas inlet, an inlet valve, a coil pipe a of the heat exchanger, a filter, a pneumatic cut-off valve, a first level pneumatic pressure regulating valve, a coil pipe b of the heat exchanger, a second level pressure regulating valve, a large-and-small head connecting device, an outlet valve and a natural gas outlet in series. The self-pressure-taking low-pressure pipeline is formed by connecting a high-pressure inlet valve, a low-pressure regulating valve, a low-pressure outlet valve and a self-pressure-taking low-pressure valve in series. An outlet pipeline of the low-pressure outlet valve is communicated with the pneumatic cut-off valve of the natural gas supply system and the pneumatic control part of the first level pneumatic pressure regulating valve and is used as a pneumatic source. The self-pressure-taking medium-pressure pipeline is formed by connecting a high-pressure inlet valve, a medium-pressure inlet valve a and a medium-pressure inlet valve b in series. The natural gas self-pressure-taking pneumatic pressure regulating device has the advantages of being simple in structure, easy to implement, convenient to maintain, capable of normally running under any outlet pressure, safe and reliable.
Description
(1) technical field
The utility model relates to natural-gas station house voltage adjusting device, particularly one and is provided with the pneumatic regulator of mesolow two-way rock gas self-pressure.
(2) background technique
Big-flow high-pressure natural gas pressure regulating equipment is all equipped with pneumatic emergency cut-off valve and air vent valve, and the need of work external gas source of this two classes valve under normal circumstances, in the time that external gas source can not normally provide, will cause this type of valve cisco unity malfunction, and cause equipment not use.Therefore we have developed a kind of automatic pressure taking device of natural gas high-pressure pressure regulator of low pressure, and this device does not need to rely on any external gas source can complete pressure regulation work, obtains good result.But Shortcomings still in actual use, be that the pressure that the automatic pressure taking device of low pressure provides can not be lower than 0.2MPa, when pressure is during lower than 0.2MPa, can make the reaction velocity of pneumatic cut-off valve and air vent valve reduce, the equipment of giving normally cause potential safety hazard, thereby bring impact to safety in production.
(3) model utility content
The purpose of this utility model is for above-mentioned existing problems, provide one to be provided with the pneumatic regulator of mesolow two-way rock gas self-pressure, this apparatus structure is simple, easy to implement, easy to maintenance, can guarantee that system air feed all can normally move under any pressure and safe and reliable.
The technical solution of the utility model:
One is provided with the pneumatic regulator of mesolow two-way rock gas self-pressure, comprises pressure pipe road in heat exchanger, natural gas supply pipeline, self-pressure low pressure line and self-pressure, is provided with coil pipe a and coil pipe b in heat exchanger; Natural gas supply pipeline comprise Imported gas, inlet valve, heat exchanger coil pipe a, filter, pneumatic cut-off valve, one-level air vent valve, heat exchanger coil pipe b, second voltage regulation valve, CONCENTRIC REDUCER reducing, outlet valve and gas outlet and be connected in series by pipeline; Self-pressure low pressure line comprises self-pressure high-pressure inlet valve, low pressure regulating pressure valve, low tension outlet valve and self-pressure low pressure valve and is connected in series by pipeline, wherein self-pressure high-pressure inlet valve is connected with Imported gas pipeline, self-pressure low pressure valve is connected with the pipeline between natural gas supply pipeline middle outlet valve and gas outlet, and the outlet conduit of self-pressure outlet valve is connected with the pneumatic cut-off valve of natural gas supply system and the pneumatic control part of one-level air vent valve respectively and as pneumatic source; In self-pressure, pressure pipe road comprises self-pressure high-pressure inlet valve, middle pressure inlet valve a and middle pressure inlet valve b and is connected in series by pipeline, presses in wherein the pipeline between coil pipe b and the second voltage regulation valve of inlet valve a outlet conduit and heat exchanger in natural gas supply pipeline to be connected.
Working principle of the present utility model:
This device is in the time of initial launch, and the valve of all self-pressure pipelines is in closed condition, and the pneumatic control part of the pneumatic cut-off valve of natural gas supply system and one-level air vent valve is respectively with the outlet conduit connection of self-pressure outlet valve and as pneumatic source.When after the normal operation of device start, open the self-pressure low pressure valve at outlet conduit place, close the self-pressure high-pressure inlet valve of inlet, guarantee the normal air feed of equipment, in then selecting to adopt according to actual outlet pressure, press self-pressure system or low pressure self-pressure system; In the time that outlet pressure is greater than 0.2MPa, select to open low pressure self-pressure system, keep present self-pressure system; In the time that outlet pressure is less than or equal to 0.2MPa, open successively two self-pressure middle pressure valves, then regulate the outlet pressure of self-pressure pressure governor, to open self-pressure outlet valve and close self-pressure low pressure valve simultaneously, the system air feed of making normally moves.
The applicable pressure range of this automatic pressure taking device is: inlet pressure (1.0-20) MPa; Outlet pressure is not limit.
The utility model has the advantages that: this apparatus structure is simple, easy to implement, easy to maintenance, under any outlet pressure, all can normally move and safe and reliable, can be widely used in door station, industrial park station and the residential quarter station in large-scale gas company, city.
(4) accompanying drawing explanation
Accompanying drawing is this device schematic flow sheet.
In figure: 1. Imported gas 2. inlet valve 3. heat exchanger 4. filters
5. pneumatic cut-off valve 6. one-level air vent valve 7. second voltage regulation valve 8. CONCENTRIC REDUCER reducings
9. outlet valve 10. gas outlet 11. self-pressure high-pressure inlet valve 12. low pressure regulating pressure valves
13. low tension outlet valve 14. self-pressure low pressure line 15. self-pressure low pressure valves
In 16., press in inlet valve a 17. self-pressures and press inlet valve b in pressure pipe road 18.
19. heat exchanger coils a 20. heat exchanger coils b
(5) embodiment
Embodiment:
One is provided with the pneumatic regulator of mesolow two-way rock gas self-pressure, comprises pressure pipe road 17 in heat exchanger 3, natural gas supply pipeline, self-pressure low pressure line 14 and self-pressure, is provided with coil pipe a19 and coil pipe b20 in heat exchanger 3; Natural gas supply pipeline comprise Imported gas 1, inlet valve 2, heat exchanger coil pipe a19, filter 4, pneumatic cut-off valve 5, one-level air vent valve 6, heat exchanger coil pipe b20, second voltage regulation valve 7, CONCENTRIC REDUCER reducing 8, outlet valve 9 and gas outlet 10 and be connected in series by pipeline; Self-pressure low pressure line 14 comprises self-pressure high-pressure inlet valve 11, low pressure regulating pressure valve 12, low tension outlet valve 13 and self-pressure low pressure valve 15 and is connected in series by pipeline, wherein self-pressure high-pressure inlet valve 11 is connected with Imported gas 1 pipeline, self-pressure low pressure valve 15 is connected with the pipeline between natural gas supply pipeline middle outlet valve 9 and gas outlet 10, and the outlet conduit of self-pressure outlet valve 13 is connected with the pneumatic cut-off valve 5 of natural gas supply system and the pneumatic control part of one-level air vent valve 6 respectively and as pneumatic source; In self-pressure, pressure pipe road 17 comprises self-pressure high-pressure inlet valve 11, middle pressure inlet valve a16 and middle pressure inlet valve b18 and is connected in series by pipeline, presses in wherein the pipeline between coil pipe b20 and the second voltage regulation valve 7 of inlet valve a16 outlet conduit and heat exchanger in natural gas supply pipeline to be connected.
In this embodiment, before one-level air vent valve, supply air line adopts 20G pipe, specification Φ 35mm, wall thickness 6mm; After one-level air vent valve, supply air line adopts 20# pipe, and caliber is different and different according to flow; Pipeline before self-pressure outlet valve adopts 20G pipe, specification Φ 22mm, wall thickness 4mm, pipeline before self-pressure outlet valve and self-pressure low pressure valve adopts copper pipe, specification is: Φ 8mm, wall thickness 1mm, pipeline between self-pressure middle pressure valve a, b adopts Stainless Steel Tube, specification Φ 8mm, wall thickness 1mm, Imported gas valve model is BKH-DN25-PN315; Gas outlet valve model is PN16DJ, and self-pressure pressure regulator valve model is YQYG-754; The model of the high-pressure ball valve of self-pressure pipeline is BKH-DN13-PN315, and the model of self-pressure low pressure valve is SZA-600-1/2 " NPT; The model of self-pressure middle pressure valve is Q11F-64P DN15; The one-level air vent valve model of gas pipeline is E1HPPR-1/2EP-30; The model of pneumatic cut-off valve is BKH-PQ-DN25-PN315.
This device strong adaptability, user is esy to use, safe and reliable, and effect is good.
Claims (1)
1. be provided with the pneumatic regulator of mesolow two-way rock gas self-pressure, it is characterized in that: comprise pressure pipe road in heat exchanger, natural gas supply pipeline, self-pressure low pressure line and self-pressure, in heat exchanger, be provided with coil pipe a and coil pipe b; Natural gas supply pipeline comprise Imported gas, inlet valve, heat exchanger coil pipe a, filter, pneumatic cut-off valve, one-level air vent valve, heat exchanger coil pipe b, second voltage regulation valve, CONCENTRIC REDUCER reducing, outlet valve and gas outlet and be connected in series by pipeline; Self-pressure low pressure line comprises self-pressure high-pressure inlet valve, low pressure regulating pressure valve, low tension outlet valve and self-pressure low pressure valve and is connected in series by pipeline, wherein self-pressure high-pressure inlet valve is connected with Imported gas pipeline, self-pressure low pressure valve is connected with the pipeline between natural gas supply pipeline middle outlet valve and gas outlet, and the outlet conduit of self-pressure outlet valve is connected with the pneumatic cut-off valve of natural gas supply system and the pneumatic control part of one-level air vent valve respectively and as pneumatic source; In self-pressure, pressure pipe road comprises pressing in self-pressure high-pressure inlet valve, self-pressure and in inlet valve a and self-pressure, presses inlet valve b and be connected in series by pipeline, wherein in self-pressure, presses the pipeline between coil pipe b and the second voltage regulation valve of inlet valve a outlet conduit and heat exchanger in natural gas supply pipeline to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320762017.1U CN203628281U (en) | 2013-11-27 | 2013-11-27 | Natural gas self-pressure-taking pneumatic pressure regulating device with low-pressure pipeline and medium-pressure pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320762017.1U CN203628281U (en) | 2013-11-27 | 2013-11-27 | Natural gas self-pressure-taking pneumatic pressure regulating device with low-pressure pipeline and medium-pressure pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203628281U true CN203628281U (en) | 2014-06-04 |
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ID=50814755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320762017.1U Expired - Fee Related CN203628281U (en) | 2013-11-27 | 2013-11-27 | Natural gas self-pressure-taking pneumatic pressure regulating device with low-pressure pipeline and medium-pressure pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203628281U (en) |
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2013
- 2013-11-27 CN CN201320762017.1U patent/CN203628281U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20161127 |