CN212931579U - Liquid inlet and outlet pipeline of constant volume pipe piston type oil-gas-water multiphase flowmeter - Google Patents
Liquid inlet and outlet pipeline of constant volume pipe piston type oil-gas-water multiphase flowmeter Download PDFInfo
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- CN212931579U CN212931579U CN202021924856.5U CN202021924856U CN212931579U CN 212931579 U CN212931579 U CN 212931579U CN 202021924856 U CN202021924856 U CN 202021924856U CN 212931579 U CN212931579 U CN 212931579U
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Abstract
The utility model provides a liquid inlet and outlet pipeline of heterogeneous flowmeter of constant volume pipe piston oil gas water, include: the volume fixing pipe is internally provided with a piston which moves along the axial direction in a sealing way; the liquid flow control valve circuit comprises an upper liquid valve arranged at the top end of the constant volume pipe, a lower liquid valve arranged at the bottom of the constant volume pipe and a middle liquid control valve arranged in the middle of the empty volume pipe; the magnetostrictive liquid level meter comprises a measuring rod inserted into a constant volume pipe, an upper floating ball and a lower floating ball which are connected to the measuring rod, wherein the upper floating ball and the lower floating ball are respectively positioned on two sides of a piston, and a magnetic ring is arranged in a sealing hole of the piston. The utility model discloses can utilize the liquid break-make of the intraductal different inflow of liquid flow control valve way control constant volume, both can control certain way liquid and flow in constant volume pipe, can also break off the liquid way supply of constant volume pipe simultaneously, but also can be when the inside gas of constant volume pipe is excessive, exhaust gas alone, the combination control through three valve makes the constant volume pipe realize the liquid flow direction control of different purposes.
Description
Technical Field
The utility model relates to an oil gas water three-phase flow measurement field especially relates to a constant volume pipe piston can carry out the admission and drainage liquid pipeline of multi-path control to the liquid flow direction in the heterogeneous flowmeter of oil gas water.
Background
The metering process of the piston type oil-gas-water multiphase flowmeter with the constant volume pipe is that the constant volume pipe is filled with fluid to be measured, then a gas-liquid interface is measured, and then the oil-gas-water three-phase flow is obtained through comprehensive density analysis. The measuring process is that after the piston in the constant volume pipe reaches the upper stop point or the lower stop point, the liquid inlet stops, the oil-gas-water three-phase fluid to be measured entering the constant volume pipe is rapidly separated into a gas-liquid layer, and a stable gas-liquid interface is formed. At the moment, the floating ball of the liquid level meter floats on the gas-liquid interface, and the height of the gas-liquid interface can be measured by measuring the height of the floating ball.
The pipeline that has for the constant volume pipe confession liquid all sets up independent business turn over pipeline alone, leads to pipeline control complicated, and the valve of control line adopts single-circuit control more moreover, and the flow is adjusted through manual according to the interior liquid change of constant volume pipe, and this leads to ultimate measuring result error great, has increased the manual control cost moreover.
In addition, the positions of the upper and lower floating balls need to be known in the whole measuring process, and the position of the piston needs to be measured in order to control the measuring process. The reed pipe floating ball liquid level meter and the capacitance rod type liquid level meter which are adopted in the prior art can only measure the position quantity of a single floating ball, the position of a second floating ball can not be detected simultaneously, and how to measure the position of a piston does not have a better solution at present.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can carry out the inlet and outlet liquid pipeline that multi-path control is carried out to liquid flow direction in the heterogeneous flowmeter of oil gas water in the constant volume pipe piston.
Specifically, the utility model provides a liquid inlet and outlet pipeline of heterogeneous flowmeter of constant volume pipe piston oil gas water, include:
the constant volume pipe is a hollow cylindrical pipe which is vertically arranged, and a piston which moves in an axial sealing manner is arranged in the constant volume pipe;
the liquid flow control valve circuit is used for controlling the piston movement and liquid reversing inside the constant volume pipe; the liquid filling device comprises an upper liquid valve arranged at the top end of a constant volume pipe, a lower liquid valve arranged at the bottom of the constant volume pipe and a central liquid control valve arranged in the middle of an empty volume pipe;
the magnetostrictive liquid level meter comprises a measuring rod inserted into a constant volume pipe from a liquid feeding valve at the upper end of the constant volume pipe, an upper floating ball and a lower floating ball connected to the measuring rod, wherein the insertion end of the measuring rod penetrates through a sealing hole in a piston and then is fixed with the other end of the constant volume pipe, the upper floating ball and the lower floating ball are respectively positioned at two sides of the piston, and a magnetic ring is installed in the sealing hole of the piston.
The utility model discloses an in the embodiment, go up liquid valve, well accuse liquid valve and lower liquid valve and be the inside three way valve that surges that two independent valve clacks are constituteed about having respectively, the effect of the independent break-make of two tunnel and break-make simultaneously about the realization.
The utility model discloses an in the embodiment, go up the business turn over liquid pipe at liquid valve and lower liquid valve both ends and communicate through the connecting pipe respectively, the business turn over liquid pipe of well accuse liquid valve communicates with two connecting pipes respectively.
The utility model discloses an in the embodiment, supply the middle part of the last liquid valve that the measuring stick passed is provided with the through hole that runs through the valve body middle part perpendicularly, the measuring stick is sealed to pass the through hole and gets into in the constant volume pipe.
The utility model discloses an in the embodiment, the both ends of constant volume pipe are provided with the closing cap, go up the liquid valve and install on the closing cap with lower liquid valve, and supply the last liquid valve that the measuring stick passed supplies simultaneously with the connecting hole of closing cap the measuring stick passes.
In one embodiment of the present invention, the sealing hole on the piston is located at the center of the piston.
The utility model discloses can utilize the liquid break-make of the intraductal different inflow of liquid flow control valve way control constant volume, both can control certain way liquid and flow in constant volume pipe, can also break off the liquid way supply of constant volume pipe simultaneously, but also can be when the inside gas of constant volume pipe is excessive, exhaust gas alone to prevent that gas from being discharged by the lower liquid valve department of bottom, make the constant volume pipe realize the liquid density measurement of different purposes through the combination control of three valve.
The magnetostrictive liquid level meter can simultaneously measure the positions of three moving objects in the constant volume pipe, and the problem that two floating balls can not be simultaneously and accurately measured in the constant volume pipe in the prior art is solved. And the measurement of three objects can be realized only by simply improving the constant volume tube. The position information of the piston after movement is obtained by utilizing the magnetic ring on the piston, and more sufficient data is provided for the three-phase measurement of oil, gas and liquid.
Drawings
FIG. 1 is a schematic structural view of a liquid level detecting device according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a liquid inlet and outlet pipe according to an embodiment of the present invention.
Detailed Description
The detailed structure and implementation process of the present solution are described in detail below with reference to specific embodiments and the accompanying drawings.
As shown in fig. 1 and 2, in an embodiment of the utility model, a liquid inlet and outlet pipeline of a constant volume pipe piston type oil-gas-water multiphase flowmeter is disclosed, include: the liquid level meter comprises a constant volume pipe 1, a magnetostrictive liquid level meter 2 and a liquid flow control valve circuit 3.
The constant volume tube 1 is a hollow cylindrical tube which is vertically placed, and a piston 4 which moves along the axial direction in a sealing manner is arranged in the constant volume tube.
The liquid flow control valve circuit 3 is used for controlling the movement of a piston 4 in the constant volume tube 1 and the liquid reversing, and comprises an upper liquid valve 31 arranged at the top end of the constant volume tube 1, a lower liquid valve 32 arranged at the bottom of the constant volume tube 1 and a middle liquid control valve 33 arranged in the middle of the constant volume tube 1; each valve is used for realizing independent on-off and simultaneous on-off of the upper liquid path, the gas path, the middle gas path and the bottom liquid path of the constant volume pipe.
The magnetostrictive liquid level meter 2 comprises a measuring rod 21, an upper floating ball 22 and a lower floating ball 23, wherein the upper liquid valve 31 at the upper end of a constant volume pipe 1 is inserted into the constant volume pipe 1, the upper floating ball 22 and the lower floating ball 23 are connected to the measuring rod 21, the insertion end of the measuring rod 21 penetrates through a sealing hole 41 in a piston 4 and then is fixed with the other end part in the constant volume pipe 1, the upper floating ball 22 and the lower floating ball 23 are respectively positioned at two sides of the piston 4, and a magnetic ring 42 is installed in the sealing hole 41 of the piston 4.
The metering process of the constant volume pipe 1 is that the constant volume pipe 1 is filled with fluid to be measured, then a gas-liquid interface is measured, and then the oil-gas-water three-phase flow is obtained through comprehensive density analysis. The volume fixing pipe 1 is installed in a vertical mode on the ground, the liquid inlet controlled by the liquid flow control valve circuit 3 stops after the piston 4 reaches an upper stop point or a lower stop point in the measuring process, and the oil-gas-water three-phase fluid to be measured entering the volume fixing pipe 1 is rapidly separated into a gas layer and a liquid layer to form a stable gas-liquid interface.
The upper floating ball 22 and the lower floating ball 23 float on the gas-liquid interface, and the gas-liquid interface height of the positions of the upper floating ball 22 and the lower floating ball 23 can be accurately measured by using the electromagnetic pulse passing through the measuring rod 21. When the lower liquid valve 32 is opened to transfuse liquid in the constant volume pipe 1, the inner piston 4 ascends along with the liquid inlet, the liquid at the upper part of the constant volume pipe 1 is discharged out of the constant volume pipe 1 through the upper liquid valve 31, and at the moment, the gas-liquid interface at the lower part can be measured through the lower floating ball 23. When the upper liquid valve 31 is used for transfusion, the lower liquid valve 32 is opened to discharge liquid, the inner piston 4 descends, and an upper gas-liquid interface is measured through the upper floating ball 22. In the moving process of the piston 4, the piston 4 can move up and down along the measuring rod 21 by using the sealing hole 41, and the magnetic ring 42 in the sealing hole 41 can interact with the pulse in the measuring rod 21, so that the height of the piston 4 can be measured.
The liquid flow control valve path 3 can respectively realize the input and output of liquid from the upper part of the constant volume pipe 1 or the disconnection of the input and output by using the upper liquid valve 31, respectively realize the input and output of liquid from the lower part of the constant volume pipe 1 or the disconnection of the input and output by using the lower liquid valve 32, and simultaneously realize the direct discharge of the gas in the constant volume pipe 1 by using the middle liquid control valve 33.
This embodiment can utilize the magnetostrictive liquid level meter to realize the position measurement of three moving object in the constant volume pipe simultaneously, has solved among the prior art and can't realize two floater precision measurements's problem simultaneously in the constant volume pipe. And the measurement of three objects can be realized only by simply improving the constant volume tube. Meanwhile, the magnetic ring on the piston is utilized, the position information of the piston can be further acquired, and more sufficient data is provided for the three-phase measurement of oil, gas and liquid.
Utilize liquid flow control valve way 3 can control the liquid break-make of the different inflow in the constant volume pipe 1, both can control certain way liquid and flow in constant volume pipe 1, can also break off the liquid way supply of constant volume pipe 1 simultaneously, and can also be when constant volume pipe 1 inside gas is excessive, exhaust gas alone, in order to prevent that gas from discharging by the lower liquid valve 32 department of bottom, make constant volume pipe 1 realize the liquid density measurement of different purposes through the combination control of three valve.
By means of the installation structure that the measuring rod 21 directly penetrates through the upper liquid valve 31, the measuring effect can be unaffected, and meanwhile, the flowing of liquid can not be affected. The piston 4 can prevent liquid from permeating from two sides through the sealing hole 41, and meanwhile, the up-and-down movement of the piston is not influenced.
In order to control the liquid to enter and exit conveniently, the upper liquid valve 31, the lower liquid valve 32 and the middle liquid control valve 33 used in the embodiment are hydraulic three-way valves, the inner parts of which are provided with a left valve flap and a right valve flap, wherein the left valve flap in the inner parts of the three-way valves are opened, the liquid is infused into the constant volume pipe 1, and the right valve flap is opened, the liquid in the constant volume pipe 1 is discharged; meanwhile, when the left valve flap and the right valve flap are opened, the liquid is not infused into the constant volume pipe 1 and is used as a circulation pipeline.
Furthermore, the liquid inlet and outlet pipes at the two ends of the upper liquid valve 31 and the lower liquid valve 32 are respectively communicated through connecting pipes 34, and the liquid inlet and outlet pipe of the middle liquid control valve 33 is respectively communicated with the two connecting pipes 34. The structure can reduce connecting pipelines, so that the valves can be matched with each other, the existing pipelines are fully utilized to realize the control of gas and liquid flow, and a gas inlet pipeline and a gas outlet pipeline are not required to be respectively arranged for each valve, thereby reducing the cost and improving the utilization efficiency of each valve.
In an embodiment of the present invention, for the measuring rod 21 to pass, the middle of the upper liquid valve 31 for the measuring rod 21 to pass is provided with a through hole 31 vertically penetrating the middle of the valve body, and the measuring rod 21 is sealed to pass through the through hole 31 to enter the constant volume tube 1. The through-hole 31 itself is a separate passage from the upper fluid valve 31, which does not affect the fluid flow pattern inside the upper fluid valve 31. And the liquid leakage in the upper liquid valve 31 can be prevented by the independent structure. The through hole 31 may be a separate metal tube welded inside the upper liquid valve 3. The corresponding sealing grooves and rings are arranged in the through hole 31 to seal the insertion of the measuring rod 21, so that the liquid in the constant volume tube 1 is prevented from seeping out.
To avoid affecting the movement of the piston 4, a sealing hole 41 on the piston 4 may be provided at the center of the piston 4. In order to conveniently install the reversing valve 3, two ends of the constant volume pipe 1 can be provided with a sealing cover 11, the sealing covers 11 are welded at two ends of the constant volume pipe 1 by adopting metal, and the upper liquid valve 31 and the lower liquid valve 32 are installed on the sealing covers 11 through threaded sleeves. Under this structure, the upper liquid valve 31 that supplies measuring stick 21 to pass simultaneously with the connecting hole of closing cap 11, and this structure can further reduce the modification degree to constant volume pipe 1, reduces and reveals.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described in detail herein, many other variations and modifications can be made, consistent with the principles of the invention, which are directly determined or derived from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.
Claims (6)
1. The utility model provides a liquid inlet and outlet pipeline of volume constant pipe piston type oil gas water multiphase flowmeter which characterized in that includes:
the constant volume pipe is a hollow cylindrical pipe which is vertically arranged, and a piston which moves in an axial sealing manner is arranged in the constant volume pipe;
the liquid flow control valve circuit is used for controlling the piston movement and liquid reversing inside the constant volume pipe; the liquid filling device comprises an upper liquid valve arranged at the top end of a constant volume pipe, a lower liquid valve arranged at the bottom of the constant volume pipe and a central liquid control valve arranged in the middle of an empty volume pipe;
the magnetostrictive liquid level meter comprises a measuring rod inserted into a constant volume pipe from a liquid feeding valve at the upper end of the constant volume pipe, an upper floating ball and a lower floating ball connected to the measuring rod, wherein the insertion end of the measuring rod penetrates through a sealing hole in a piston and then is fixed with the other end of the constant volume pipe, the upper floating ball and the lower floating ball are respectively positioned at two sides of the piston, and a magnetic ring is installed in the sealing hole of the piston.
2. The liquid inlet and outlet pipeline according to claim 1,
the upper liquid valve, the middle liquid control valve and the lower liquid valve are hydraulic three-way valves which are internally provided with a left independent valve clack and a right independent valve clack respectively, and the effects of independent on-off and simultaneous on-off of the left path and the right path are achieved.
3. The liquid inlet and outlet pipeline according to claim 2,
the liquid inlet and outlet pipes at the two ends of the upper liquid valve and the lower liquid valve are respectively communicated through connecting pipes, and the liquid inlet and outlet pipe of the middle liquid control valve is respectively communicated with the two connecting pipes.
4. The liquid inlet and outlet pipeline according to claim 1,
and a through hole which vertically penetrates through the middle part of the valve body is formed in the middle part of the upper liquid valve for the measuring rod to penetrate through, and the measuring rod penetrates through the through hole in a sealing manner to enter the constant volume pipe.
5. The liquid inlet and outlet pipeline according to claim 4,
and two ends of the constant volume pipe are provided with sealing covers, the upper liquid valve and the lower liquid valve are arranged on the sealing covers, and the upper liquid valve for the measuring rod to pass through and the connecting hole of the sealing cover are simultaneously used for the measuring rod to pass through.
6. The liquid inlet and outlet pipeline according to claim 1,
the sealing hole on the piston is positioned at the center of the piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021924856.5U CN212931579U (en) | 2020-09-04 | 2020-09-04 | Liquid inlet and outlet pipeline of constant volume pipe piston type oil-gas-water multiphase flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021924856.5U CN212931579U (en) | 2020-09-04 | 2020-09-04 | Liquid inlet and outlet pipeline of constant volume pipe piston type oil-gas-water multiphase flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212931579U true CN212931579U (en) | 2021-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021924856.5U Active CN212931579U (en) | 2020-09-04 | 2020-09-04 | Liquid inlet and outlet pipeline of constant volume pipe piston type oil-gas-water multiphase flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212931579U (en) |
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2020
- 2020-09-04 CN CN202021924856.5U patent/CN212931579U/en active Active
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