CN210035078U - Liquid-phase multi-stage throttling device of high-pressure separator - Google Patents
Liquid-phase multi-stage throttling device of high-pressure separator Download PDFInfo
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- CN210035078U CN210035078U CN201920467731.5U CN201920467731U CN210035078U CN 210035078 U CN210035078 U CN 210035078U CN 201920467731 U CN201920467731 U CN 201920467731U CN 210035078 U CN210035078 U CN 210035078U
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Abstract
The utility model discloses a high-pressure separator liquid phase multi-stage throttling device, which comprises an outlet ball valve, a check valve, a main pipeline ball valve and a blowoff valve which are sequentially connected in series through pipelines, wherein three groups of throttle valves are also connected in series between the check valve and the main pipeline ball valve, and a pressure gauge is also respectively arranged on the pipeline between each two adjacent groups of throttle valves; the liquid flowmeter is connected with the main pipeline ball valve in parallel, and two sides of the liquid flowmeter are respectively provided with a branch ball valve. The utility model can avoid the condition that gas control valve is desensitized to cause gas-liquid phase communication when the separator is under high pressure, so that the stable liquid output of liquid phase can be kept under the high-pressure production state of the separator; meanwhile, the multi-stage throttling mode is adopted, so that the pressure difference can be reduced, and the valve erosion is prevented.
Description
Technical Field
The utility model belongs to the technical field of oil gas well test technique and specifically relates to a multistage throttling arrangement of high pressure separator liquid phase.
Background
Along with the increase of the demand of oil gas capacity, higher requirements are put forward for improving the production efficiency of a gas well, and in order to make up for the situation that the station building period of a single gas field well is longer and the mining time is delayed, the technology of recovering a natural gas pipe network by adopting a ground flow and a high-pressure separator is developed. The fluid in the well completes throttling, heating and gas-liquid separation through a ground flow, the natural gas directly enters a pipe network to complete recovery, and the liquid fluid enters a normal-pressure environment-friendly tank and is recovered by a tank car. In actual production, the pressure of a natural gas pipe network is more than 10MPa, and a high-pressure separator with the pressure level of 16-25MPa is mostly used, and the pressure is slightly higher than the pressure of the pipe network during production. The control of the conventional separator to the gas-liquid interface is completed by a pneumatic control valve, but under the production pressure of 10MPa or higher, the pneumatic control valve is desensitized because of large liquid phase throttling pressure difference, and the control to the gas-liquid interface of the separator becomes difficult. Considering that the liquid phase is subjected to high-pressure throttling for a long time during production and heavy slurry or solid particles are possibly accompanied, the valve is eroded and damaged.
Disclosure of Invention
An object of the utility model is to solve above-mentioned technical problem and provide a can realize liquid phase stable throttle, the multistage throttling arrangement of high pressure separator liquid phase of erosion-resistant.
In order to solve the technical problem, the utility model discloses a following technical scheme:
a liquid phase multi-stage throttling device of a high-pressure separator comprises an outlet ball valve, a check valve, a main pipeline ball valve and a blow-down valve which are sequentially connected in series through pipelines, wherein three groups of throttling valves are also connected in series between the check valve and the main pipeline ball valve, and a pressure gauge is also arranged on the pipeline between every two adjacent groups of throttling valves; the liquid flowmeter is connected with the main pipeline ball valve in parallel, and two sides of the liquid flowmeter are respectively provided with a branch ball valve.
The utility model has the advantages that: the liquid-phase multi-stage throttling device of the high-pressure separator can avoid the situation that gas and liquid are communicated due to the fact that a gas control valve is insensitive when the separator is in a high-pressure state, so that the stable liquid outlet amount of a liquid phase can be kept in a high-pressure production state of the separator; when the liquid phase contains heavy slurry or solid-phase particles, the pressure difference can be reduced by adopting a multi-stage throttling mode, and the valve erosion is prevented; the throttling valve is strong in puncture resistance and wear resistance, simple in structure, easy to operate and convenient to replace accessories, and continuity of construction operation is ensured.
Drawings
Fig. 1 is a schematic structural diagram of the liquid-phase multi-stage throttling device of the high-pressure separator of the present invention.
Detailed Description
The invention will be described in further detail with reference to the following drawings and detailed description:
referring to fig. 1, the liquid-phase multi-stage throttling device of the high-pressure separator of the present invention comprises an outlet ball valve 1, a check valve 3, a main pipeline ball valve 4 and a blowoff valve 5 which are sequentially connected in series through a pipeline 2, wherein three groups of throttle valves are further connected in series between the check valve 3 and the main pipeline ball valve 4, and a pressure gauge is further disposed on the pipeline between each two adjacent groups of throttle valves; the device is characterized by further comprising a liquid flow meter 6, wherein the liquid flow meter 6 is connected with the main pipeline ball valve 4 in parallel, and two branch pipeline ball valves 7 are respectively arranged on two sides of the liquid flow meter 6.
The liquid-phase multistage throttling device of the high-pressure separator is generally used for recovering natural gas in the high-pressure separator under the condition that the pressure of the separator is 8-20 MPa. Through the multiunit choke valve of establishing ties on the separator liquid phase pipeline, carry out accuse pressure flowing back step by step, reduce the preceding back differential pressure of accuse pressure valve to reach stable flowing back, prevent the effect of thorn.
The liquid-phase multi-stage throttling device of the high-pressure separator adopts a cage type regulating valve or a combination form of the cage type regulating valve and a needle type and wedge-shaped valve, and the liquid level of the separator under the high-pressure state is controlled according to the principles of multi-stage throttling and step-by-step pressure reduction. 3 groups of 32MPa throttle valves are connected in series on the liquid phase pipeline, all the valves are in a closed state before production, after the pressure of the separator is stable, the opening degree of each valve is respectively adjusted, and the opening degree of each valve is gradually increased from the upstream to the downstream until the liquid output is stable.
As shown in fig. 1, the liquid-phase multi-stage throttling device embodiment of the high-pressure separator: all valves are closed before production, after the pressure of the separator is stable and a gas-liquid interface reaches a proper position, an outlet ball valve 1 and a main pipeline ball valve 4 are opened (two branch ball valves 7 are opened when a liquid flowmeter 6 is used, the main pipeline ball valve 4 is kept closed), throttling valves 2# and 1# are opened, a throttling valve 3# is adjusted to a proper opening degree to control liquid drainage, the throttling valves 2# and 1# are adjusted in sequence, two pressure gauges a and b are observed, the front and back pressure difference of the valves is controlled, and step-by-step pressure reduction is achieved.
In summary, the present invention is not limited to the above embodiments, and those skilled in the art can provide other embodiments within the technical teaching of the present invention, but these embodiments are included in the scope of the present invention.
Claims (1)
1. The utility model provides a multistage throttling arrangement of high pressure separator liquid phase, includes export ball valve (1), single current valve (3), main pipeline ball valve (4) and blowoff valve (5) that are in the same place through pipeline (2) series connection in proper order, its characterized in that: three groups of throttle valves are also connected in series between the check valve (3) and the main pipeline ball valve (4), and a pressure gauge is also arranged on the pipeline between each two adjacent groups of throttle valves; the device is characterized by further comprising a liquid flow meter (6), wherein the liquid flow meter (6) is connected with the main pipeline ball valve (4) in parallel, and two sides of the liquid flow meter (6) are respectively provided with a branch ball valve (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920467731.5U CN210035078U (en) | 2019-04-08 | 2019-04-08 | Liquid-phase multi-stage throttling device of high-pressure separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920467731.5U CN210035078U (en) | 2019-04-08 | 2019-04-08 | Liquid-phase multi-stage throttling device of high-pressure separator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210035078U true CN210035078U (en) | 2020-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920467731.5U Active CN210035078U (en) | 2019-04-08 | 2019-04-08 | Liquid-phase multi-stage throttling device of high-pressure separator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210035078U (en) |
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2019
- 2019-04-08 CN CN201920467731.5U patent/CN210035078U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201217 Address after: 300457 Tianjin Binhai New Area Development Zone Second Avenue 83, China Petroleum Tianjin building Bohai Drilling Engineering Co., Ltd. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Address before: 300457 Tianjin Binhai New Area Development Zone Second Avenue 83, China Petroleum Tianjin building Bohai Drilling Engineering Co., Ltd. Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |
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| TR01 | Transfer of patent right |