CN212721663U - Density measuring device of constant volume tube piston type oil-gas-water multiphase flowmeter - Google Patents
Density measuring device of constant volume tube piston type oil-gas-water multiphase flowmeter Download PDFInfo
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- CN212721663U CN212721663U CN202021924819.4U CN202021924819U CN212721663U CN 212721663 U CN212721663 U CN 212721663U CN 202021924819 U CN202021924819 U CN 202021924819U CN 212721663 U CN212721663 U CN 212721663U
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Abstract
The utility model provides a density measurement device of heterogeneous flowmeter of constant volume pipe piston oil gas water, include: two ends of the constant volume pipe are respectively provided with a reversing valve, and a piston which moves in an axial sealing manner is arranged in the constant volume pipe; the magnetostrictive liquid level meter comprises a measuring rod inserted into the constant volume pipe from a reversing valve at one end of the constant volume pipe, and a floating ball connected to the measuring rod; the densimeter comprises a density tube with the same length as the measuring section of the constant volume tube and a densimeter for displaying the measuring result of the density tube, wherein two ends of the density tube are respectively communicated with the inside of the constant volume tube through pressure guiding holes arranged on the constant volume tube, and the connected density tube is parallel to the constant volume tube. The utility model discloses install the densimeter in the outside of constant volume pipe, utilize the density pipe directly to communicate with each other with the constant volume pipe is inside, make pressure holding between them balanced, and then can realize accurate measurement by the densimeter, need not be at constant volume pipe internally mounted lead wire and density sensor moreover, can not influence the density of constant volume pipe and the removal of piston, can keep the stability of oil gas moisture layering.
Description
Technical Field
The utility model relates to an oil gas water three-phase flow measurement field especially relates to a realize inside oil gas water liquid density measuring device in the heterogeneous flowmeter outside of constant volume pipe piston 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 the position of a gas-liquid interface is measured, and then the oil-gas-water three-phase flow is obtained through comprehensive density analysis. The density sensor is one of key instruments in the measurement process.
In the prior art, when the liquid density is measured, a density sensor is usually adopted for measurement, but because the density sensor needs corresponding line connection, the sealing of a constant volume pipe can be influenced when the density sensor is used in the constant volume pipe, and the movement of a piston can be influenced, so that the oil-gas-water density in the constant volume can not be measured directly by adopting the existing density sensor.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a realize inside oil gas water liquid density measurement's density measurement device outside the heterogeneous flowmeter of constant volume pipe piston oil gas water.
Specifically, the utility model provides a density measurement device of heterogeneous flowmeter of constant volume pipe piston oil gas water, include:
the constant volume pipe is hollow and cylindrical, two ends of the constant volume pipe are respectively provided with a reversing valve, and a piston which moves in an axial sealing manner is arranged in the constant volume pipe;
the magnetostrictive liquid level meter comprises a measuring rod and a floating ball, wherein the measuring rod is inserted into the constant volume pipe from a reversing valve at one end of the constant volume pipe, the floating ball is connected to the measuring rod, and the insertion end of the measuring rod penetrates through a sealing hole in the piston and then is fixed with the other end of the constant volume pipe;
the densimeter comprises a density tube with the same length as the measuring section of the constant volume tube and a densimeter for displaying the measuring result of the density tube, wherein two ends of the density tube are respectively communicated with the inside of the constant volume tube through pressure guiding holes arranged on the constant volume tube, and the connected density tube is parallel to the constant volume tube.
The utility model discloses an in the embodiment, two it has the instrument seat to draw downthehole welding respectively of pressure, the one end of instrument seat with the inner wall surface of constant volume pipe aligns, the other end be provided with the protrusion in the connection interface of constant volume pipe outer wall, the both ends of density pipe communicate with the connection interface of two instrument seats respectively.
In one embodiment of the present invention, the instrument seat is provided with a closed surface having a plurality of small holes at an end inside the constant volume tube.
In one embodiment of the present invention, the small holes on the sealing surface are uniformly arranged, and the number of the small holes is 19.
In an embodiment of the present invention, the position of the pressure guiding hole is located below the piston after reaching the two ends of the constant volume tube.
The utility model discloses install the densimeter in the outside of constant volume pipe, utilize the density pipe directly to communicate with each other with the constant volume pipe is inside, make pressure holding between them balanced, and then can realize accurate measurement by the densimeter, need not be at constant volume pipe internally mounted lead wire and density sensor moreover, can not influence the density of constant volume pipe and the removal of piston, can keep the stability of oil gas moisture layering.
Drawings
Fig. 1 is a schematic structural diagram of a density measuring device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an instrument seat 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, in an embodiment of the utility model, a density measurement device of volume constant pipe piston type oil gas water multiphase flowmeter is disclosed, including volume constant pipe 1, magnetostrictive level meter 2 and densimeter 3.
The constant volume pipe 1 is hollow cylindrical, two ends of the constant volume pipe are respectively provided with a reversing valve 12, and a piston 11 which moves along the axial direction in a sealing way is arranged in the constant volume pipe; the constant volume pipe 1 is used for loading three-phase liquid, and then is extruded by a piston 11, so that stable layering of oil, gas and water is realized after internal balance is achieved.
The magnetostrictive liquid level meter 2 comprises a measuring rod 21 and a floating ball 22, wherein the measuring rod 21 is inserted into the constant volume pipe 1 from the reversing valve 12 at one end of the constant volume pipe 1, the floating ball 22 is connected to the measuring rod 21, and the insertion end of the measuring rod 21 penetrates through a sealing hole 111 in the piston 11 and then is fixed with the other end of the constant volume pipe 1.
The floating ball 22 can move up and down along the measuring rod 21 along with the change of the liquid level, a group of permanent magnetic rings is arranged in the floating ball 22, when a pulse current magnetic field generated by the measuring rod 21 meets a magnetic ring magnetic field generated by the floating ball 22, the magnetic field around the floating ball 22 changes, so that a wave guide wire made of magnetostrictive materials generates a torsional wave pulse at the position of the floating ball 22, the pulse is transmitted back along the wave guide wire at a fixed speed and detected by a detection mechanism, and the position of the floating ball 22, namely the position of the liquid level, can be accurately determined by measuring the time difference between the pulse current and the torsional wave.
The densimeter 3 comprises a density tube 31 which has the same length as the measuring section of the constant volume tube 1 and a densimeter 32 which displays the measuring result of the density tube 31, two ends of the density tube 31 are respectively communicated with the inside of the constant volume tube 1 through pressure guiding holes 13 arranged on the constant volume tube 1, and the connected density tube 31 is parallel to the constant volume tube 1.
The density meter 32 is made according to gravity and the balance of forces when the object is floating and the archimedes principle. The density pointer in the normal state is in a floating state, and therefore the force of the buoyancy pushing up is slightly larger than the force of the gravity pulling down. When the density meter 32 is in a balanced state, the gravity borne by the meter is equal to the buoyancy, and when the gravity is greater than the buoyancy, the density pointer sinks, so that density measurement can be realized.
This embodiment installs the densimeter in the outside of constant volume pipe, utilizes the density pipe directly to communicate with each other with the constant volume intraduct, makes pressure holding balance between them, and then can realize accurate measurement by the densimeter, need not be at constant volume intraduct installation lead wire and density sensor moreover, can not influence the density of constant volume pipe and the removal of piston, can keep the stability of oil gas water layering.
For convenient connection density pipe 31, weld respectively in two pressure leading holes 13 of constant volume pipe 1 has instrument seat 33, and the one end of instrument seat 33 aligns with the inner wall surface of constant volume pipe 1 to avoid influencing the removal of piston 11, and the other end is provided with the connection interface 331 of protrusion in constant volume pipe 1 outer wall, and the both ends of density pipe 31 can utilize the connection interface 331 intercommunication of screw thread and two instrument seats 33 respectively. This structure can guarantee that density pipe 31 is parallel with constant volume pipe 1, makes the oil gas water liquid in the constant volume pipe 1 unanimous with the maintenance in the density pipe 31, and then improves measurement accuracy.
As shown in fig. 2, in order to prevent the gauge stand 33 from affecting the piston 11, a sealing surface 332 having a plurality of small holes 333 is provided at one end of the gauge stand 33 located inside the constant volume tube 1. The structure of the sealing surface 332 can ensure the normal passing of oil, gas and water liquid, and can prevent the side edge of the piston 11 from entering the inside of the instrument panel 33 when passing.
The small holes 333 are uniformly arranged on the sealing surface 332 of the meter base 33, and the number of the small holes is 19 in the present embodiment.
In one embodiment of the present invention, the pressure guiding hole 13 is disposed below the piston 11 after reaching the two ends of the constant volume tube 1. Namely, when the piston 11 is completely pressed at the upper end and the lower end of the constant volume pipe 1, the normal circulation of the pressure guide hole 13 is not affected.
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 (5)
1. Density measuring device of volume constant pipe piston type oil gas water multiphase flowmeter, its characterized in that includes:
the constant volume pipe is hollow and cylindrical, two ends of the constant volume pipe are respectively provided with a reversing valve, and a piston which moves in an axial sealing manner is arranged in the constant volume pipe;
the magnetostrictive liquid level meter comprises a measuring rod and a floating ball, wherein the measuring rod is inserted into the constant volume pipe from a reversing valve at one end of the constant volume pipe, the floating ball is connected to the measuring rod, and the insertion end of the measuring rod penetrates through a sealing hole in the piston and then is fixed with the other end of the constant volume pipe;
the densimeter comprises a density tube with the same length as the measuring section of the constant volume tube and a densimeter for displaying the measuring result of the density tube, wherein two ends of the density tube are respectively communicated with the inside of the constant volume tube through pressure guiding holes arranged on the constant volume tube, and the connected density tube is parallel to the constant volume tube.
2. Density measuring apparatus according to claim 1,
two it has the instrument seat to draw the downthehole welding respectively of pressure, the one end of instrument seat with the inner wall surface of constant volume pipe aligns, the other end be provided with the protrusion in the connection interface of constant volume pipe outer wall, the both ends of density pipe communicate with the connection interface of two instrument seats respectively.
3. Density measuring apparatus according to claim 2,
and one end of the instrument seat, which is positioned in the constant volume pipe, is provided with a closed surface with a plurality of small holes.
4. Density measuring apparatus according to claim 3,
the small holes on the closed surface are uniformly arranged and the number of the small holes is 19.
5. Density measuring apparatus according to claim 1,
and the pressure guide hole is positioned below the piston after reaching the two ends of the constant volume pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021924819.4U CN212721663U (en) | 2020-09-04 | 2020-09-04 | Density measuring device of constant volume tube piston type oil-gas-water multiphase flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021924819.4U CN212721663U (en) | 2020-09-04 | 2020-09-04 | Density measuring device of constant volume tube piston type oil-gas-water multiphase flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212721663U true CN212721663U (en) | 2021-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021924819.4U Active CN212721663U (en) | 2020-09-04 | 2020-09-04 | Density measuring device of constant volume tube piston type oil-gas-water multiphase flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212721663U (en) |
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2020
- 2020-09-04 CN CN202021924819.4U patent/CN212721663U/en active Active
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