CN214333963U - Online self-calibration gas-liquid two-phase metering device - Google Patents
Online self-calibration gas-liquid two-phase metering device Download PDFInfo
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- CN214333963U CN214333963U CN202120764664.0U CN202120764664U CN214333963U CN 214333963 U CN214333963 U CN 214333963U CN 202120764664 U CN202120764664 U CN 202120764664U CN 214333963 U CN214333963 U CN 214333963U
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Abstract
The utility model discloses an on-line self-calibration gas-liquid two-phase metering device, which comprises a gas-liquid separator, a gas-liquid two-phase fluid inlet pipe communicated with the inside of the gas-liquid separator is arranged at the position of the side surface of the gas-liquid separator, which is close to the top, the gas-liquid two-phase fluid inlet pipe is provided with a gas-liquid two-phase flow meter, the side surface of the gas-liquid separator is provided with a liquid level meter through a connecting pipeline, the top of the gas-liquid separator is provided with a gas phase pipeline communicated with the inside of the gas-liquid separator, the gas phase pipeline is provided with a throttling device with a positive pressure taking switch and a negative pressure taking switch, the bottom of the gas-liquid separator is provided with a liquid phase pipeline communicated with the inside of the gas-liquid separator, the liquid phase pipeline is provided with a manual switch valve, one end of the liquid phase pipeline far away from the gas-liquid separator is communicated with one end of the gas phase pipeline far away from the gas-liquid separator, and a gas-liquid two-phase fluid outlet pipe which is respectively communicated with the liquid phase pipeline and the gas phase pipeline is arranged at the communication position of the liquid phase pipeline and the gas phase pipeline. The utility model discloses simple structure just can realize online manual calibration.
Description
Technical Field
The utility model belongs to heterogeneous flow measurement field, concretely relates to online self calibration gas-liquid double-phase metering device.
Background
At present, in order to ensure the energy safety of China, the nation makes strategic decisions for vigorously exploring and developing oil and gas fields. The multiphase flowmeter and the separation metering equipment are used as important innovative technologies of oil and gas field ground processes and metering equipment with extremely high cost performance, and make great contribution to oil and gas field exploration and development, digital oil fields, intelligent oil fields and cost reduction and efficiency improvement. Compared with the prior art, the method has the advantages that the cost of online calibration is high due to the separation of metering equipment, and the safety risk exists in the online calibration process; multiphase flow meters do not have a self-calibration function. These all severely restrict their popularization and application, and also become a difficult problem which plagues equipment manufacturers and oil production plants for a long time.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that just to the not enough of above-mentioned prior art, provide an online self calibration gas-liquid double-phase metering device, simple structure just can realize online manual calibration.
The utility model adopts the technical proposal that: an on-line self-calibration gas-liquid two-phase metering device comprises a gas-liquid separator, a gas-liquid two-phase fluid inlet pipe communicated with the inside of the gas-liquid separator is arranged at the position, close to the top, of the side surface of the gas-liquid separator, the gas-liquid two-phase fluid inlet pipe is provided with a gas-liquid two-phase flow meter, the side surface of the gas-liquid separator is provided with a liquid level meter through a connecting pipeline, the top of the gas-liquid separator is provided with a gas phase pipeline communicated with the inside of the gas-liquid separator, the gas phase pipeline is provided with a throttling device with a positive pressure taking switch and a negative pressure taking switch, the bottom of the gas-liquid separator is provided with a liquid phase pipeline communicated with the inside of the gas-liquid separator, the liquid phase pipeline is provided with a manual switch valve, one end of the liquid phase pipeline far away from the gas-liquid separator is communicated with one end of the gas phase pipeline far away from the gas-liquid separator, and a gas-liquid two-phase fluid outlet pipe which is respectively communicated with the liquid phase pipeline and the gas phase pipeline is arranged at the communication position of the liquid phase pipeline and the gas phase pipeline.
In one embodiment, one end of the gas-liquid two-phase fluid inlet pipe, which is far away from the gas-liquid separator, is provided with a gas-liquid two-phase fluid inlet.
In one embodiment, the two connecting pipelines are respectively communicated with the gas-liquid separator at positions close to the top and the bottom.
In one embodiment, two connecting pipelines are provided with interface switch valves.
In one embodiment, a multi-parameter intelligent differential pressure flow transmitter communicated with the throttling device is arranged on the positive and negative pressure taking switches of the throttling device.
In one embodiment, one end of the gas-liquid two-phase fluid outlet pipe, which is far away from the communication part of the liquid phase pipeline and the gas phase pipeline, is provided with a gas-liquid two-phase fluid outlet.
The beneficial effects of the utility model reside in that: the device has two different states of a gas-liquid two-phase metering state and a self-calibration state, the gas-liquid two-phase metering state is simple, efficient and accurate in metering mode, the self-calibration state can perform self-calibration on the measurement function of the whole device, and the measurement precision in the long-term measurement state is guaranteed.
Drawings
FIG. 1 is a schematic view of the gas-liquid two-phase metering structure of the present invention;
fig. 2 is a schematic diagram of the self-calibration state structure of the present invention.
In the figure: 1. a gas-liquid two-phase fluid inlet; 2. a gas-liquid two-phase flow meter; 3. a gas-liquid separator; 4. a liquid level meter; 5. a throttling device; 6. a manual on-off valve; 7. a gas phase line; 8. a liquid phase pipeline; 9. a gas-liquid two-phase fluid outlet; 10. an interface switching valve; 11. a positive and negative pressure-taking switch; 12. introducing a gas-liquid two-phase fluid into the pipe; 13. a gas-liquid two-phase fluid outlet pipe; 14. connecting a pipeline; 15. multi-parameter intelligent differential pressure flow transmitter.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 and 2, an on-line self-calibration gas-liquid two-phase metering device comprises a gas-liquid separator 3, a gas-liquid two-phase fluid inlet pipe 12 communicated with the inside of the gas-liquid separator 3 is arranged at a position, close to the top, of the side face of the gas-liquid separator 3, a gas-liquid two-phase flow meter 2 is arranged on the gas-liquid two-phase fluid inlet pipe 12, a liquid level meter 4 is arranged on the side face of the gas-liquid separator 3 through a connecting pipeline 14, a gas-phase pipeline 7 communicated with the inside of the gas-liquid separator 3 is arranged at the top of the gas-liquid separator 3, a throttling device 5 with a positive and negative pressure taking switch 11 is arranged on the gas-phase pipeline 7, a liquid-phase pipeline 8 communicated with the inside of the gas-liquid separator 3 is arranged at the bottom of the gas-liquid separator 3, a manual switch valve 6 is arranged on the liquid-phase pipeline 8, one end, far from the gas-liquid separator 3, of the gas-phase pipeline 7 is communicated with the liquid-phase pipeline 8, and the gas-phase pipeline 7, and the gas-liquid-phase pipeline 8 are respectively communicated with the gas-liquid-phase pipeline 7 And exits the tube 13.
In this embodiment, a gas-liquid two-phase fluid inlet 1 is provided at one end of the gas-liquid two-phase fluid inlet pipe 12 away from the gas-liquid separator 3.
In this embodiment, the two connecting pipes 14 are respectively communicated with the gas-liquid separator 3 near the top and near the bottom.
In this embodiment, the two connection pipelines 14 are provided with the interface switch valve 10.
In this embodiment, the positive and negative pressure switches 11 of the throttling device 5 are provided with a multi-parameter intelligent differential pressure flow transmitter 15 communicated with the throttling device 5.
In this embodiment, a gas-liquid two-phase fluid outlet 9 is provided at one end of the gas-liquid two-phase fluid outlet pipe 13 away from the connection between the liquid phase pipeline 8 and the gas phase pipeline 7.
The device comprises a gas-liquid two-phase metering state and a self-calibration state. When the gas-liquid two-phase metering device is in a gas-liquid two-phase metering state, the manual switch valve 6 is opened, the gas-liquid two-phase fluid enters the gas-liquid separator 3 through the gas-liquid two-phase fluid inlet 1 and the gas-liquid two-phase fluid inlet pipe 12 to be separated into a gas phase and a liquid phase, and respectively enters the gas-liquid two-phase fluid outlet pipe 13 through the gas-phase pipeline 7 and the liquid-phase pipeline 8 and is discharged from the gas-liquid two-phase fluid outlet 9. In this process, the gas-liquid two-phase fluid is metered by the gas-liquid two-phase flow meter 2.
When the self-calibration state is achieved, the positive and negative pressure tapping switch 11 is opened, the manual switch valve 6 on the liquid phase pipeline 8 is closed, the gas-liquid two-phase fluid enters the gas-liquid separator 3 through the gas-liquid two-phase fluid inlet 1 and the gas-liquid two-phase fluid inlet pipe 12 to be separated into a gas phase and a liquid phase, and the gas phase and the liquid phase enter the gas-liquid two-phase fluid outlet pipe 13 through the gas phase pipeline 7 and the liquid phase pipeline 8 respectively and are discharged through the gas-liquid two-phase fluid outlet 9. In the process, a gas phase initial value and a liquid phase initial value on the gas-liquid two-phase flowmeter 2 are read, and a liquid level initial value of the liquid level meter 4 and a gas phase initial value on the multi-parameter intelligent differential pressure flow transmitter 15 are read simultaneously. When the liquid level of the liquid level meter 4 reaches the upper limit value, the upper limit liquid level value of the liquid level meter 4 and the gas phase accumulated value on the multi-parameter intelligent differential pressure flow transmitter 15 are read. The inner diameter of the gas-liquid separator 3 is a determined parameter according to different setting conditions, so that the standard liquid phase flow can be calculated, the metering error can be calculated through the calculated standard liquid phase flow, the average error value is obtained after multiple times of calibration, and the gas-liquid two-phase flowmeter 2 is calibrated.
The device has two different states of a gas-liquid two-phase metering state and a self-calibration state, the metering mode of the gas-liquid two-phase metering state is simple, efficient and accurate, the self-calibration state can perform self-calibration on the measurement function of the whole device, and the measurement precision in the long-term measurement state is ensured.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (6)
1. An online self-calibration gas-liquid two-phase metering device is characterized in that: the device comprises a gas-liquid separator (3), a gas-liquid two-phase fluid inlet pipe (12) communicated with the inside of the gas-liquid separator is arranged at a position, close to the top, of the side face of the gas-liquid separator (3), a gas-liquid two-phase flow meter (2) is arranged on the gas-liquid two-phase fluid inlet pipe (12), a liquid level meter (4) is arranged on the side face of the gas-liquid separator (3) through a connecting pipeline (14), a gas-phase pipeline (7) communicated with the inside of the gas-liquid separator (3) is arranged at the top of the gas-liquid separator (3), a throttling device (5) with a positive and negative pressure tapping switch (11) is arranged on the gas-phase pipeline (7), a liquid-phase pipeline (8) communicated with the inside of the gas-liquid separator is arranged at the bottom of the gas-liquid separator (3), a manual switch valve (6) is arranged on the liquid-phase pipeline (8), one end, far away from the gas-liquid separator (3), of the liquid-phase pipeline (8) is communicated with one end, far away from the gas-liquid-phase pipeline (7), and a gas-liquid two-phase fluid outlet pipe (13) which is respectively communicated with the liquid phase pipeline (8) and the gas phase pipeline (7) is arranged at the communication position of the liquid phase pipeline (8) and the gas phase pipeline (7).
2. The on-line self-calibration gas-liquid two-phase metering device according to claim 1, wherein: and a gas-liquid two-phase fluid inlet (1) is arranged at one end of the gas-liquid two-phase fluid inlet pipe (12) far away from the gas-liquid separator (3).
3. An on-line self-calibrating gas-liquid two-phase metering device according to claim 1 or 2, characterized in that: the two connecting pipelines (14) are respectively communicated with the positions of the gas-liquid separator (3) close to the top and the bottom.
4. The on-line self-calibration gas-liquid two-phase metering device according to claim 3, wherein: and the two connecting pipelines (14) are provided with interface switch valves (10).
5. An on-line self-calibrating gas-liquid two-phase metering device according to claim 1 or 2, characterized in that: and a multi-parameter intelligent differential pressure flow transmitter (15) communicated with the throttling device (5) is arranged on the positive and negative pressure taking switch (11) of the throttling device (5).
6. An on-line self-calibrating gas-liquid two-phase metering device according to claim 1 or 2, characterized in that: and a gas-liquid two-phase fluid outlet (9) is arranged at one end of the gas-liquid two-phase fluid outlet pipe (13), which is far away from the communication part of the liquid phase pipeline (8) and the gas phase pipeline (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120764664.0U CN214333963U (en) | 2021-04-14 | 2021-04-14 | Online self-calibration gas-liquid two-phase metering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120764664.0U CN214333963U (en) | 2021-04-14 | 2021-04-14 | Online self-calibration gas-liquid two-phase metering device |
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| Publication Number | Publication Date |
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| CN214333963U true CN214333963U (en) | 2021-10-01 |
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| CN202120764664.0U Active CN214333963U (en) | 2021-04-14 | 2021-04-14 | Online self-calibration gas-liquid two-phase metering device |
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| CN (1) | CN214333963U (en) |
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2021
- 2021-04-14 CN CN202120764664.0U patent/CN214333963U/en active Active
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