CN216524159U - Online real flow self-calibration gas-liquid two-phase flow metering device - Google Patents
Online real flow self-calibration gas-liquid two-phase flow metering device Download PDFInfo
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- CN216524159U CN216524159U CN202123303698.9U CN202123303698U CN216524159U CN 216524159 U CN216524159 U CN 216524159U CN 202123303698 U CN202123303698 U CN 202123303698U CN 216524159 U CN216524159 U CN 216524159U
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Abstract
The utility model discloses an on-line real flow self-calibration gas-liquid two-phase flow metering device, which comprises a gas-liquid cyclone separator, the side surface of the gas-liquid cyclone separator is provided with a two-phase flow inlet pipe communicated with the inside of the gas-liquid cyclone separator, the side surface of the gas-liquid cyclone separator is provided with a liquid level meter communicated with the inside of the gas-liquid cyclone separator through a liquid level metering pipeline, the top of the gas-liquid cyclone separator is provided with a gas phase pipeline communicated with the inside of the gas-liquid cyclone separator, one end of the gas phase pipeline far away from the gas-liquid cyclone separator is provided with a two-phase outflow pipe communicated with the gas phase pipeline, the gas phase pipeline is provided with a gas-liquid two-phase flowmeter, the bottom of the gas-liquid cyclone separator is provided with a liquid phase pipeline communicated with the inside of the gas-liquid cyclone separator, one end of the liquid phase pipeline, which is far away from the gas-liquid cyclone separator, is communicated with the position, which is positioned between the gas-liquid cyclone separator and the gas-liquid two-phase flowmeter, of the gas phase pipeline, and the liquid phase pipeline is provided with a liquid phase switch valve. The utility model can realize the on-line real flow manual calibration of gas phase and liquid phase.
Description
Technical Field
The utility model belongs to the field of fluid flow metering, and particularly relates to an online real flow self-calibration gas-liquid two-phase flow metering device.
Background
At present, in the fields of petroleum, natural gas, shale gas and chemical industry, the on-line non-separation multiphase flow metering technology develops rapidly, and various metering principles and structures emerge endlessly. However, for a long time, multiphase flowmeters have two difficulties, namely reliability and on-line calibration, and due to the complexity and variability of multiphase fluids, the authenticity and reliability of metering are easily questioned. For example, in oil and gas field development, when an oil and gas well condition is abnormal, the metering data of the multiphase flowmeter is greatly changed, at the moment, the multiphase flowmeter is suspected to have problems at first, and whether the multiphase flowmeter really has an over-metering condition cannot be judged on site. In addition, multiphase flow meters require periodic calibration, which is costly and a long-standing problem in the world of multiphase flow metering. The method for calibrating the gas-liquid two-phase flowmeter online at any time has great significance for complex media and working conditions and popularization of the gas-liquid two-phase flowmeter.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide an on-line real flow self-calibration gas-liquid two-phase flow metering device aiming at the defects of the prior art, and the on-line real flow manual calibration of gas-liquid two phases can be realized.
The technical scheme adopted by the utility model is as follows: an online real-flow self-calibration gas-liquid two-phase flow metering device comprises a gas-liquid cyclone separator, wherein a two-phase flow inlet pipe communicated with the inside of the gas-liquid cyclone separator is arranged on the side surface of the gas-liquid cyclone separator, a liquid level meter communicated with the inside of the gas-liquid cyclone separator is arranged on the side surface of the gas-liquid cyclone separator through a liquid level metering pipeline, a gas-phase pipeline communicated with the inside of the gas-liquid cyclone separator is arranged at the top of the gas-liquid cyclone separator, a two-phase outlet pipe communicated with the gas-phase pipeline is arranged at one end, away from the gas-liquid cyclone separator, of the gas-phase pipeline, a gas-liquid two-phase flow meter is arranged on the gas-liquid pipeline, a liquid-phase pipeline communicated with the inside of the gas-liquid cyclone separator is arranged at the bottom of the gas-liquid cyclone separator, one end, away from the gas-liquid cyclone separator, of the gas-liquid pipeline is communicated with a position, between the gas-liquid-phase flow meter, and a liquid-phase switch valve is arranged on the liquid-phase pipeline.
In one embodiment, the two-phase flow inlet pipe is arranged on the side surface of the gas-liquid cyclone separator close to the top.
In one embodiment, the liquid level meter is arranged on the side surface of the gas-liquid cyclone separator close to the bottom.
In one embodiment, an interface switch valve is arranged on the liquid level metering pipeline.
The utility model has the beneficial effects that: the gas-liquid two-phase flowmeter can be calibrated by comparing error values of two different metering modes through opening and closing of the liquid phase switch valve while normal metering of the gas-liquid two-phase is ensured.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
In the figure: 1. two-phase flow enters the pipe; 2. a gas-liquid cyclone separator; 3. an interface switching valve; 4. a gas phase line; 5. a liquid phase pipeline; 6. a liquid phase on-off valve; 7. a gas-liquid two-phase flow meter; 8. a two-phase outflow tube; 9. a liquid level meter; 10. a liquid level metering pipeline.
Detailed Description
The utility model will be described in further detail with reference to the following drawings and specific embodiments.
As shown in figure 1, the on-line real-flow self-calibration gas-liquid two-phase flow metering device comprises a gas-liquid cyclone separator 2, wherein a two-phase flow inlet pipe 1 communicated with the inside of the gas-liquid cyclone separator 2 is arranged on the side surface of the gas-liquid cyclone separator 2, a liquid level meter 9 communicated with the inside of the gas-liquid cyclone separator 2 is arranged on the side surface of the gas-liquid cyclone separator 2 through a liquid level metering pipeline 10, a gas-phase pipeline 4 communicated with the inside of the gas-liquid cyclone separator 2 is arranged at the top of the gas-liquid cyclone separator 2, a two-phase flow outlet pipe 8 communicated with the gas-phase pipeline 4 is arranged at one end, far away from the gas-liquid cyclone separator 2, of the gas-liquid pipeline 4, a gas-liquid two-phase flow meter 7 is arranged on the gas-liquid cyclone separator 2, a liquid-phase pipeline 5 communicated with the inside of the gas-liquid cyclone separator 2 and the gas-liquid-phase flow meter 7 on the gas-liquid pipeline 4, and a liquid phase switch valve 6 is arranged on the liquid phase pipeline 5.
In this embodiment, the two-phase flow inlet pipe 1 is disposed at a position near the top of the side surface of the gas-liquid cyclone 2.
In this embodiment, the liquid level meter 9 is disposed on the side surface of the gas-liquid cyclone 2 near the bottom.
In this embodiment, the liquid level metering pipeline 10 is provided with an interface switch valve 3.
The gas-liquid two-phase flow metering device comprises a conventional metering state and a calibration state.
Under the conventional metering state, the metering method comprises the following steps:
and opening the liquid phase switch valve 6, allowing the gas-liquid two-phase fluid to enter the gas-liquid cyclone separator 2 through the two-phase flow inlet pipe 1, and separating into a gas phase and a liquid phase under the action of the gas-liquid cyclone separator 2. The gas phase enters a gas phase pipeline 4, the liquid phase enters a liquid phase pipeline 5, the gas phase and the liquid phase are respectively measured through a gas-liquid two-phase flow meter 7, and after the measurement is finished, the gas-liquid two-phase flow measuring device is discharged through a two-phase flow outlet pipe 8.
In a calibration state, the method is used for calibrating the gas-liquid two-phase flowmeter 7, and the calibration method comprises the following steps:
1. and (3) closing the liquid phase switch valve 6, allowing the gas-liquid two-phase fluid to enter the gas-liquid cyclone separator 2 through the two-phase flow inlet pipe 1, and separating into a gas phase and a liquid phase under the action of the gas-liquid cyclone separator 2. The gas phase enters a gas phase pipeline 4, the liquid phase enters a liquid phase pipeline 5, a gas-liquid two-phase flowmeter 7 meters the gas phase flow, and the gas phase flow metered at the moment is the pure gas phase flow. The liquid phase flow is calculated by the height difference between the initial liquid level and the final liquid level of the liquid level meter 9 and the inner diameter of the gas-liquid cyclone separator 2. In this state, the calibration time is known, and the flow rate of the gas phase and the average flow rate of the liquid phase can be measured by controlling the liquid phase on-off valve 6 a plurality of times.
2. And opening the liquid phase switch valve 6, allowing the gas-liquid two-phase fluid to enter the gas-liquid cyclone separator 2 through the two-phase flow inlet pipe 1, and separating into a gas phase and a liquid phase under the action of the gas-liquid cyclone separator 2. The gas phase enters a gas phase pipeline 4, the liquid phase enters a liquid phase pipeline 5, and gas phase flow rate accumulated flow rate and liquid phase flow rate accumulated flow rate are respectively measured through a gas-liquid two-phase flow meter 7. And the average flow of the gas phase flow and the liquid phase flow can be obtained by metering for multiple times. After the metering is completed, the gas-liquid two-phase flow metering device is discharged from the two-phase flow outlet pipe 8.
3. And calculating an error value between the average flow rate of the gas phase flow and the average flow rate of the liquid phase flow under the two metering modes, and calibrating the gas-liquid two-phase flowmeter 7 according to the error value.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (4)
1. An on-line real flow self-calibration gas-liquid two-phase flow metering device is characterized in that: the device comprises a gas-liquid cyclone separator (2), wherein a two-phase flow inlet pipe (1) communicated with the inside of the gas-liquid cyclone separator is arranged on the side surface of the gas-liquid cyclone separator (2), a liquid level meter (9) communicated with the inside of the gas-liquid cyclone separator is arranged on the side surface of the gas-liquid cyclone separator (2) through a liquid level metering pipeline (10), a gas phase pipeline (4) communicated with the inside of the gas-liquid cyclone separator is arranged at the top of the gas-liquid cyclone separator (2), a two-phase outlet pipe (8) communicated with the gas phase pipeline (4) is arranged at one end, far away from the gas-liquid cyclone separator (2), of the gas phase pipeline (4), a gas-liquid two-phase flow meter (7) is arranged on the gas phase pipeline (4), a liquid phase pipeline (5) communicated with the inside of the gas-liquid phase cyclone separator (2) is arranged at the bottom of the gas-liquid phase pipeline (5), far away from the gas-liquid cyclone separator (2), and the position, between the gas-liquid-phase flow meter (7), on the gas phase pipeline (4), and a liquid phase switch valve (6) is arranged on the liquid phase pipeline (5).
2. An on-line real-flow self-calibration gas-liquid two-phase flow metering device according to claim 1, characterized in that: the two-phase flow inlet pipe (1) is arranged at the position, close to the top, of the side surface of the gas-liquid cyclone separator (2).
3. An on-line real-flow self-calibrated gas-liquid two-phase flow metering device according to claim 1 or 2, characterized in that: the liquid level meter (9) is arranged at the position, close to the bottom, of the side surface of the gas-liquid cyclone separator (2).
4. An on-line real-flow self-calibrated gas-liquid two-phase flow metering device according to claim 3, characterized in that: and the liquid level metering pipeline (10) is provided with an interface switch valve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123303698.9U CN216524159U (en) | 2021-12-24 | 2021-12-24 | Online real flow self-calibration gas-liquid two-phase flow metering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123303698.9U CN216524159U (en) | 2021-12-24 | 2021-12-24 | Online real flow self-calibration gas-liquid two-phase flow metering device |
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| Publication Number | Publication Date |
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| CN216524159U true CN216524159U (en) | 2022-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202123303698.9U Active CN216524159U (en) | 2021-12-24 | 2021-12-24 | Online real flow self-calibration gas-liquid two-phase flow metering device |
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| CN (1) | CN216524159U (en) |
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2021
- 2021-12-24 CN CN202123303698.9U patent/CN216524159U/en active Active
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