CN211201925U - Sewage discharging device for low-pressure liquid in natural gas inlet-gas separator - Google Patents
Sewage discharging device for low-pressure liquid in natural gas inlet-gas separator Download PDFInfo
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- CN211201925U CN211201925U CN201921392331.9U CN201921392331U CN211201925U CN 211201925 U CN211201925 U CN 211201925U CN 201921392331 U CN201921392331 U CN 201921392331U CN 211201925 U CN211201925 U CN 211201925U
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- Prior art keywords
- pipeline
- valve
- separator
- blowdown
- natural gas
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 239000007788 liquid Substances 0.000 title claims abstract description 42
- 239000007789 gas Substances 0.000 title claims abstract description 34
- 239000003345 natural gas Substances 0.000 title claims abstract description 27
- 239000010865 sewage Substances 0.000 title description 21
- 238000007599 discharging Methods 0.000 title description 13
- 238000000926 separation method Methods 0.000 claims abstract description 6
- 238000005192 partition Methods 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 15
- 230000005484 gravity Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model belongs to the technical field of natural gas separation, specifically relate to a blowdown apparatus of low-pressure liquid in natural gas inlet-gas separator, through introducing the high-pressure process gas after the pressurization of compressor unit that the external world applys as drive power, designed special automatic control device, with the liquid discharge in the inlet-gas separator, make full use of the high-pressure process gas after the pressurization of compressor unit as the drive power with the liquid discharge in the separator, no longer use the dredge pump, reduce cost; through the matching of the mechanical automatic blowdown valve controller and the pneumatic control valve, the mechanical full-automatic blowdown is realized, the use of explosion-proof electrical parts is avoided, the control flow is simplified, meanwhile, the safety is improved, and the number of fault points is reduced; the device provided by the utility model is integrated form layering setting, compact structure, and the occupation of land space reduces.
Description
Technical Field
The utility model belongs to the technical field of the natural gas separation, specifically relate to a waste fitting discharging of low-pressure liquid in natural gas inlet separator.
Background
After natural gas is produced in a gas well, the process of transporting such natural gas by pipeline is wet natural gas transportation, since untreated natural gas often contains a large amount of moisture and other components. Condensate liquid and liquid water can be generated in the wet gas pipeline along with the reduction of pressure and temperature along the pipeline in the conveying process, the gas-liquid interface is complex due to different gas-liquid flow rates and is represented as liquid drops entrained by the gas phase, and the density of a gas phase core is changed by the liquid entrained by the gas phase, so that the liquid holdup and the pressure gradient along the pipeline are obviously influenced, and therefore, the natural gas can be configured into a gas inlet and outlet device to remove the liquid in the gas component before entering a compressor unit. When the inlet pressure is low, the separated liquid is often discharged into the pressurized closed sewage collecting system only by the pressure of the air source. The existing method is to discharge the low-pressure liquid by adopting an electric or electromagnetic valve controlled pneumatic sewage pump, and because the medium is natural gas, the used electrical equipment is all explosion-proof type, and automatic sewage discharge can be realized only by an electric control system, so that the cost is obviously higher, the safety is lower, the failure maintenance frequency is more, and the required construction area is larger.
Disclosure of Invention
The utility model discloses an overcome above-mentioned technical problem not enough, provide a low pressure liquid exhaust's in the gas separator will be advanced to high-pressure gas after the use compressor unit pressure boost of complete mechanical type device, can solve above-mentioned technical problem completely.
The technical scheme for solving the technical problems is as follows:
a sewage discharging device for low-pressure liquid in a natural gas inlet-gas separator comprises an upper chamber of the separator for gas-liquid separation and a lower chamber for collecting liquid, wherein the upper chamber and the lower chamber are isolated by a partition plate, a natural gas inlet is formed in the side wall of the lower part of the upper chamber, and a natural gas outlet is formed in the side wall of the upper part of the upper chamber;
the upper cavity and the lower cavity are connected through a first pipeline, a first pneumatic control valve is connected to the first pipeline in series, the communication and isolation of the upper cavity and the lower cavity are controlled through the opening or closing of the first pneumatic control valve, the upper cavity and the lower cavity are also connected through a second pipeline, and a first manual ball valve and a first check valve are arranged on the second pipeline;
the set height of the lower chamber is connected with a mechanical automatic blowdown valve controller L C in series through a third pipeline, the mechanical automatic blowdown valve controller L C is connected with instrument wind through the third pipeline, a pressure regulating valve is arranged at the outlet of the instrument wind, the mechanical automatic blowdown valve controller L C is connected with a pneumatic blowdown valve, the instrument wind controls the opening and closing of the pneumatic blowdown valve through the mechanical automatic blowdown valve controller L C,
the pneumatic blowdown valve is communicated with the lower cavity through a fourth pipeline and connected with the second check valve through a fifth pipeline;
the first pneumatic control valve is communicated with the mechanical automatic blowdown valve controller L C through a sixth pipeline, a second pneumatic control valve is arranged on the sixth pipeline, and the second pneumatic control valve is further communicated with the lower cavity through a seventh pipeline.
Furthermore, the bottom of the lower cavity is also provided with a second manual ball valve for manual sewage discharge during separator overhaul and maintenance, and an outlet pipeline of the second manual ball valve is communicated with a second check valve.
The utility model also provides a blowdown method of low-pressure liquid in natural gas inlet separator is through introducing the high-pressure process gas that the external world was applyed after the pressure boost of compressor unit as drive power, and through foretell natural gas inlet separator low-pressure liquid's waste fitting discharging will advance the liquid discharge in the gas separator.
The utility model has the advantages that:
the utility model provides a sewage discharging device for low-pressure liquid in a natural gas inlet-gas separator and a method for discharging sewage of low-pressure liquid in the gas inlet-gas separator by using the device, which fully utilizes high-pressure process gas after the pressurization of a compressor set as driving force to discharge the liquid in the separator, does not use a sewage discharging pump any more and reduces the cost; through the matching of the mechanical automatic blowdown valve controller and the pneumatic control valve, the mechanical full-automatic blowdown is realized, the use of explosion-proof electrical parts is avoided, the control flow is simplified, meanwhile, the safety is improved, and the number of fault points is reduced; the device provided by the utility model is integrated form layering setting, compact structure, and the occupation of land space reduces.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural diagram (non-pollution discharge state) of the present invention;
fig. 2 is a schematic structural view (sewage discharge state) of the present invention;
in the figure, 1 is an upper chamber, 2 is a lower chamber, 3 is a partition plate, 4 is a natural gas inlet, 5 is a natural gas outlet, 6 is a first manual ball valve, 7 is a first check valve, 8 is a second manual ball valve, 9 is a second check valve, 10 is a pneumatic blow-off valve, 11 is a pressure regulating valve, 12 is a mechanical automatic blow-off valve controller L C, 13 is a second pneumatic control valve, 14 is a first pneumatic control valve, G1 is a first pipeline, G2 is a second pipeline, G3 is a third pipeline, G4 is a fourth pipeline, G5 is a fifth pipeline, G6 is a sixth pipeline, and G7 is a seventh pipeline.
Detailed Description
Example 1:
a sewage discharging device for low-pressure liquid in a natural gas inlet-gas separator comprises an upper chamber 1 of the separator for gas-liquid separation and a lower chamber 2 for collecting liquid, wherein the upper chamber 1 and the lower chamber 2 are isolated by a partition plate 3, a natural gas inlet 4 is formed in the side wall of the lower part of the upper chamber 1, and a natural gas outlet 5 is formed in the side wall of the upper part of the upper chamber 1;
the upper chamber 1 and the lower chamber 2 are connected through a first pipeline G1, a first pneumatic control valve 14 is connected in series on the first pipeline G1, the communication and the isolation of the upper chamber 1 and the lower chamber 2 are controlled through the opening or the closing of the first pneumatic control valve 14, the upper chamber 1 and the lower chamber 2 are also connected through a second pipeline G2, and a first manual ball valve 6 and a first check valve 7 are arranged on the second pipeline G2;
the set height of the lower chamber 2 is connected with a mechanical automatic blowdown valve controller L C12 in series through a third pipeline G3, the mechanical automatic blowdown valve controller L C12 is connected with instrument wind through a third pipeline G3, a pressure regulating valve 11 is arranged at the outlet of the instrument wind, the mechanical automatic blowdown valve controller L C12 is connected with a pneumatic blowdown valve 10, the instrument wind controls the opening and closing of the pneumatic blowdown valve 10 through the mechanical automatic blowdown valve controller L C12,
the pneumatic blowdown valve 10 is communicated with the lower chamber 2 through a fourth pipeline G4, and the pneumatic blowdown valve 10 is connected with the second check valve 9 through a fifth pipeline G5;
the first pneumatic control valve 14 is communicated with the mechanical automatic blowdown valve controller L C12 through a sixth pipeline G6, a second pneumatic control valve 13 is arranged on the sixth pipeline G6, and the second pneumatic control valve 13 is further communicated with the lower chamber 2 through a seventh pipeline G7.
The bottom of the lower chamber 2 is also provided with a second manual ball valve 8 for manual sewage discharge during separator overhaul and maintenance, and an outlet pipeline of the second manual ball valve 8 is communicated with a second check valve 9.
Referring to fig. 1, in a non-pollution discharge state, the first pneumatic control valve 14 is in a normally open state, the upper chamber 1 is communicated with the lower chamber 2, and liquid separated from the upper chamber 1 flows into the lower chamber through the second pipeline G2 by gravity for storage; referring to fig. 2, in the sewage discharging state, the upper chamber 1 and the lower chamber 2 are not communicated, and the high-pressure process gas is introduced into the lower chamber to discharge the liquid; the detailed working principle is as follows:
the middle partition plate 3 divides the device into an upper chamber 1 and a lower chamber 2, natural gas or other process gas carrying liquid enters the upper chamber 1 from a gas inlet 4, gas phase is discharged from a gas outlet 5 after separation, the liquid is gathered at the bottom of the upper chamber 1, when the device is in a non-sewage discharge state, a first pneumatic control valve 14 in a normally open state communicates the upper chamber 1 with the lower chamber 2, the liquid at the bottom of the upper chamber 1 is subjected to gravity and enters the lower chamber 2 through a normally open manual ball valve 6 and a check valve 7 for storage, when the liquid level in the lower chamber 2 reaches a set height, a mechanical automatic sewage discharge valve controller 12 is triggered to act (open), instrument air (air and the like) is stabilized in pressure by a pressure regulating valve 11, the pneumatic sewage discharge valve 10 is opened through the mechanical automatic sewage discharge valve controller L C12, meanwhile, a second pneumatic control valve 13 in the normally closed state and a first pneumatic control valve 14 in the normally open state are respectively switched to an open state and a closed state, high-pressure process gas is introduced into the lower chamber 2, the upper chamber 1 is not communicated with the lower chamber 2, the pneumatic control valve 13 in the pneumatic discharge valve is also in the lower chamber 2, the pneumatic control valve is switched to open state, the pneumatic discharge valve 13 and the pneumatic discharge valve 12 is switched to close again, the initial pneumatic discharge valve 14, and the exhaust valve 12 is triggered after the pneumatic control valve 12 is switched to act, the pneumatic discharge valve 12, the initial pneumatic discharge.
The utility model provides a sewage discharging device for low-pressure liquid in a natural gas inlet-gas separator and a method for discharging sewage of low-pressure liquid in the gas inlet-gas separator by using the device, which fully utilizes high-pressure process gas after the pressurization of a compressor set as driving force to discharge the liquid in the separator, does not use a sewage discharging pump any more and reduces the cost; through the matching of the mechanical automatic blowdown valve controller and the pneumatic control valve, the mechanical full-automatic blowdown is realized, the use of explosion-proof electrical parts is avoided, the control flow is simplified, meanwhile, the safety is improved, and the number of fault points is reduced; the device provided by the utility model is integrated form layering setting, compact structure, and the occupation of land space reduces.
The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the techniques of the present invention are substantially any simple modification and equivalent changes to the above embodiments, all falling within the protection scope of the present invention.
Claims (2)
1. The low-pressure liquid pollution discharge device in the natural gas inlet-gas separator is characterized by comprising an upper chamber of the separator for gas-liquid separation and a lower chamber for collecting liquid, wherein the upper chamber and the lower chamber are separated by a partition plate;
the upper cavity and the lower cavity are connected through a first pipeline, a first pneumatic control valve is connected to the first pipeline in series, the communication and isolation of the upper cavity and the lower cavity are controlled through the opening or closing of the first pneumatic control valve, the upper cavity and the lower cavity are also connected through a second pipeline, and a first manual ball valve and a first check valve are arranged on the second pipeline;
the set height of the lower chamber is connected with a mechanical automatic blowdown valve controller L C in series through a third pipeline, the mechanical automatic blowdown valve controller L C is connected with instrument wind through the third pipeline, a pressure regulating valve is arranged at the outlet of the instrument wind, the mechanical automatic blowdown valve controller L C is connected with a pneumatic blowdown valve, the instrument wind controls the opening and closing of the pneumatic blowdown valve through the mechanical automatic blowdown valve controller L C,
the pneumatic blowdown valve is communicated with the lower cavity through a fourth pipeline and connected with the second check valve through a fifth pipeline;
the first pneumatic control valve is communicated with the mechanical automatic blowdown valve controller L C through a sixth pipeline, a second pneumatic control valve is arranged on the sixth pipeline, and the second pneumatic control valve is further communicated with the lower cavity through a seventh pipeline.
2. A blowdown device for low pressure liquid in a natural gas feed separator as claimed in claim 1, wherein the bottom of the lower chamber is further provided with a second manual ball valve for manual blowdown during separator overhaul and maintenance, and an outlet pipe of the second manual ball valve is communicated with the second check valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921392331.9U CN211201925U (en) | 2019-08-26 | 2019-08-26 | Sewage discharging device for low-pressure liquid in natural gas inlet-gas separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921392331.9U CN211201925U (en) | 2019-08-26 | 2019-08-26 | Sewage discharging device for low-pressure liquid in natural gas inlet-gas separator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211201925U true CN211201925U (en) | 2020-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921392331.9U Expired - Fee Related CN211201925U (en) | 2019-08-26 | 2019-08-26 | Sewage discharging device for low-pressure liquid in natural gas inlet-gas separator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211201925U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454137A (en) * | 2019-08-26 | 2019-11-15 | 杰瑞石油天然气工程有限公司 | A kind of blowdown apparatus of natural gas air inlet separator mesolow liquid |
-
2019
- 2019-08-26 CN CN201921392331.9U patent/CN211201925U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454137A (en) * | 2019-08-26 | 2019-11-15 | 杰瑞石油天然气工程有限公司 | A kind of blowdown apparatus of natural gas air inlet separator mesolow liquid |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200807 |
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| CF01 | Termination of patent right due to non-payment of annual fee |