CN201621350U - Double-gas source device of emergency cut-off valve for gas-collecting station - Google Patents
Double-gas source device of emergency cut-off valve for gas-collecting station Download PDFInfo
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- CN201621350U CN201621350U CN2010200467482U CN201020046748U CN201621350U CN 201621350 U CN201621350 U CN 201621350U CN 2010200467482 U CN2010200467482 U CN 2010200467482U CN 201020046748 U CN201020046748 U CN 201020046748U CN 201621350 U CN201621350 U CN 201621350U
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Abstract
The utility model relates to a double-gas source device of an emergency cut-off valve for a gas-collecting station, which is applied to the emergency cut-off control of a natural gas safety passage of an oilfield gas production station, and mainly comprises a nitrogen bottle group, valves, an air compressor, an air storage tank, pneumatic emergency cut-off valves and pipelines; four nitrogen bottle outlets of the nitrogen bottle group are connected with a main pipeline in parallel, the valve is arranged on the main pipeline, the other end of the main pipeline is respectively connected with the pneumatic emergency cut-off valves in parallel, the air outlet of the air compressor is connected with the inlet of an air storage pipeline through the pipeline, the outlet of the air storage pipeline is connected with the main pipeline among the pneumatic emergency cut-off valves through the pipelines, and the outlet pipeline of the air storage tank or the air storage pipeline is connected with the valve. After a double-gas source system is applied, the material resources and the financial resources required by frequently replacing nitrogen bottles are reduced, and the operating cost of pneumatic valves is lowered; a pressure air storage pipeline is used for replacing a pressure storage tank, thereby the operational safety factor is increased, and the equipment management is facilitated; and the gas source system has small external dimension and is easy for popularization and application.
Description
Technical field
The utility model relates to production gas technology field, oil field, and particularly the logical clear area of gas-recovery station rock gas promptly blocks control gear, be a kind of adopt dual gas supply control promptly block control gear.
Background technique
In the oil field gas gathering station,, when being in an emergency, can in time cut off gas gathering station rock gas import and outlet passage for improving gas gathering station and pipe network operation safety coefficient.The pneumatic valve that the oil field flow line adopts mainly contains following several big class: (1) pneumatic V-type is regulated ball valve; (2) pneumatic O type cuts off ball valve; (3) torque formula cylinder ball valve; (4) solenoid diaphragm valve; (5) pneumatic craspedodrome formula membrane valve; (6) mortor operated valve.The pneumatic emergency block valve is that pneumatic O type cuts off ball valve class valve.
At present, the driving source of the gas of pneumatic emergency block valve is the nitrogen bottle of one group of parallel connection, and the pressure of nitrogen bottle gas is 2～13MPa, and decompression back pressure is 1MPa.Utilize the pressure of nitrogen bottle to be driving force, close the pneumatic emergency block valve.Nitrogen bottle air feed flow process is: four nitrogen bottle parallel connections, reach every pneumatic emergency block valve through being depressured to after confluxing, and nitrogen pipeline is the aluminum pipe fitting.Because pneumatic emergency block valve quantity is more, there is following problem in nitrogen bottle as air supply unit: (1) nitrogen bottle is unique air feed source of the gas, and no bailout gas does not have the source of the gas of taking over when breaking down; (2) the nitrogen bottle capacity is little, can make gas consumption limited, causes frequently changing nitrogen bottle; (3) artificial roping nitrogen bottle produces additional human and material resources, increases pneumatic emergency block valve operating cost; (4) when weather, road problem, nitrogen bottle can not in time be changed, and influences the normal safe operation of pneumatic emergency block valve.
The model utility content
The purpose of this utility model is: a kind of gas gathering station urgent block valve dual gas supply device is provided, adopt the air compressor air feed, for the pneumatic emergency block valve provides the control source of the gas, with the nitrogen bottle group is bailout gas, can satisfy explosive-proof grade requirement of gas production occasion and shock dropping, noise reduction demand, eliminate the gas gathering station potential safety hazard; Improve pneumatic emergency block valve operational efficiency.
The technical solution adopted in the utility model is: gas gathering station urgent block valve dual gas supply device, mainly form by nitrogen bottle group, valve, air compressor, gas holder, pneumatic emergency block valve and pipeline; The nitrogen bottle group is to be connected in parallel on the main line by four nitrogen bottle outlets, valve is arranged on main line, the other end of main line is connected in parallel to the pneumatic emergency block valve respectively, it is characterized in that: the gas outlet of air compressor has pipeline to connect the import of gas holder or gas storage pipeline, the outlet of gas holder or gas storage pipeline has pipeline to be connected on the main line between the pneumatic emergency block valve, is connected with valve at the outlet line of gas holder or gas storage pipeline.
The driving bleed pressure of pneumatic emergency block valve is 0.5～0.7MPa.
For the pressurized air of comparison drying, cleaning is provided, on the outlet line of air compressor, be connected with filter, exsiccator.It is 1MPa that air compressor provides atmospheric pressure, and discharge capacity is 0.9m
3/ h.
The technological process of gas gathering station urgent block valve dual gas supply device is: consult Fig. 1.
Under the normal condition: the valve 2 on four nitrogen bottles outlet main line is closed; The outlet line of gas holder 4 or gas storage pipeline is connected with valve 2 and opens.It is the pressurized air of 1MPa that air compressor 3 produces pressure, after three-stage filtration, drying, enter gas holder 4 or pressure gas storage pipeline, when air pressure is lower than 0.5MPa, air compressor 3 starting tonifying Qi, air compressor 3 shut down when pressure was higher than 1MPa, assurance provides group air pressure to be not less than 0.5MPa, for the pneumatic emergency block valve 5 that is connected provides control air pressure.
Taking place in particular cases: the valve 2 on four nitrogen bottle outlet main lines is opened, and the outlet line of gas holder 4 or gas storage pipeline is connected with valve 2 and closes, and the nitrogen of nitrogen bottle group 1 is 1MPa through pressure after confluxing, reduce pressure, enters main steam line.
The pipeline that pneumatic emergency block valve 5 is controlled (dotted line is represented) is a natural gas line, and natural gas line is connected to the suction line of oven 6, in oven 6, be the rock gas preheating after, discharge from the outlet line of oven 6, be transported to down treating process one.
The beneficial effects of the utility model: the utility model gas gathering station urgent block valve dual gas supply device, can make pneumatic emergency block valve 5 long-term, continuous services, improved the gas gathering station operating safety factor; After using the dual gas supply system, reduce frequent replacing nitrogen bottle required material resources, financial resources, reduced the operating cost of pneumatic valve; Working pressure gas storage pipeline replaces pressure vessel, improves operating safety factor, is convenient to equipment control; Air supply system boundary dimension is little, is easy to apply.
Description of drawings
Fig. 1 is the utility model gas gathering station urgent block valve dual gas supply apparatus structure schematic representation.What dotted line was represented is the natural gas line of pneumatic emergency block valve 5 controls, does not belong to the utility model protection domain.
Among the figure, 1. nitrogen bottle group, 2. valve, 3. air compressor, 4. gas holder, 5. pneumatic emergency block valve, 6. oven.
Embodiment
Embodiment 1: with a gas gathering station urgent block valve dual gas supply device is example, and the utility model is described in further detail.
Consult Fig. 1.The utility model gas gathering station urgent block valve dual gas supply device mainly is made up of nitrogen bottle group 1, valve 2, air compressor 3, gas holder 4, pneumatic emergency block valve 5 and pipeline; The driving bleed pressure of pneumatic emergency block valve 5 is 0.5～0.7MPa.Nitrogen bottle group 1 is to be connected in parallel on the main line by four nitrogen bottle outlets, and the working pressure of nitrogen bottle gas is 2～13MPa, and decompression back pressure is 1MPa.Manually-operated gate 2 is arranged on main line, and the other end of main line is connected in parallel to 23 pneumatic emergency block valves 5 respectively.
Compressor gas supplied pressure is 1MPa, and discharge capacity is 0.9m
3/ h.The gas outlet of air compressor 3 has pipeline to connect the import of gas storage pipeline, and the gas storage pipeline is the pipeline of 219mm by the 20m diameter, and pressure gas storage piping volume is 0.62m
3, on the pressure gas storage pipeline Pressure testing and drainage device are housed.The outlet of gas storage pipeline has pipeline to be connected on the main line between the pneumatic emergency block valve 5, is connected with a manually-operated gate 2 at the outlet line of gas storage pipeline.
On the outlet line of air compressor 3, be connected with tertiary filter and exsiccator.It is 1MPa that air compressor 3 provides atmospheric pressure, and discharge capacity is 0.9m
3/ h.Pressurized air after filtration, meet the requirement of valve driving gas after the drying, water dew point reaches below-40 ℃, each equipment meets the requirement of gas production occasion explosive-proof grade, and shock dropping, noise reduction setting are arranged, and meets the production demand.Compressor downstream supply gas pressure is higher than 1MPa, and compressor is stopped transport; After downstream pressure was lower than 0.5MPa, air compressor brought into operation.
Gas gathering station urgent block valve dual gas supply device sledge is contained on the base, and the boundary dimension of base is long 5m, and wide is 1.2m.
Claims (2)
1. a gas gathering station urgent block valve dual gas supply device mainly is made up of nitrogen bottle group (1), valve (2), air compressor (3), gas holder (4), pneumatic emergency block valve (5) and pipeline; Nitrogen bottle group (1) is to be connected in parallel on the main line by four nitrogen bottle outlets, valve (2) is arranged on main line, the other end of main line is connected in parallel to pneumatic emergency block valve (5) respectively, it is characterized in that: the gas outlet of air compressor (3) has pipeline to connect the import of gas holder (4) or gas storage pipeline, the outlet of gas holder (4) or gas storage pipeline has pipeline to be connected on the main line between the pneumatic emergency block valve (5), is connected with valve (2) at the outlet line of gas holder (4) or gas storage pipeline.
2. gas gathering station according to claim 1 urgent block valve dual gas supply device is characterized in that: be connected with filter, exsiccator on the outlet line of air compressor (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200467482U CN201621350U (en) | 2010-01-08 | 2010-01-08 | Double-gas source device of emergency cut-off valve for gas-collecting station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200467482U CN201621350U (en) | 2010-01-08 | 2010-01-08 | Double-gas source device of emergency cut-off valve for gas-collecting station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201621350U true CN201621350U (en) | 2010-11-03 |
Family
ID=43024805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200467482U Expired - Lifetime CN201621350U (en) | 2010-01-08 | 2010-01-08 | Double-gas source device of emergency cut-off valve for gas-collecting station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201621350U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485522A (en) * | 2015-12-31 | 2016-04-13 | 珠海市安粤科技有限公司 | Pneumoelectric-linked emergency switching-off control device of liquefied petroleum gas storage tank |
| CN107388041A (en) * | 2017-07-21 | 2017-11-24 | 江苏永钢集团有限公司 | The dual gas supply control system of Pneumatic anti-surging valve |
| CN107543036A (en) * | 2017-07-21 | 2018-01-05 | 江苏永钢集团有限公司 | A kind of dual gas supply control method of Pneumatic anti-surging valve |
| CN108679450A (en) * | 2018-08-27 | 2018-10-19 | 中海油天津液化天然气有限责任公司 | A kind of LNG tank cars safety interlock system |
-
2010
- 2010-01-08 CN CN2010200467482U patent/CN201621350U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485522A (en) * | 2015-12-31 | 2016-04-13 | 珠海市安粤科技有限公司 | Pneumoelectric-linked emergency switching-off control device of liquefied petroleum gas storage tank |
| CN105485522B (en) * | 2015-12-31 | 2018-09-14 | 珠海市安粤科技有限公司 | A kind of liquefied petroleum gas storage tank air-electricity linkage emergency cut-off control device |
| CN107388041A (en) * | 2017-07-21 | 2017-11-24 | 江苏永钢集团有限公司 | The dual gas supply control system of Pneumatic anti-surging valve |
| CN107543036A (en) * | 2017-07-21 | 2018-01-05 | 江苏永钢集团有限公司 | A kind of dual gas supply control method of Pneumatic anti-surging valve |
| CN108679450A (en) * | 2018-08-27 | 2018-10-19 | 中海油天津液化天然气有限责任公司 | A kind of LNG tank cars safety interlock system |
| CN108679450B (en) * | 2018-08-27 | 2024-03-19 | 中海油天津液化天然气有限责任公司 | LNG tank wagon safety interlocking system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101103 |
|
| CX01 | Expiry of patent term |