CN108827408B - Large-depth underwater oil-gas multiphase flowmeter - Google Patents
Large-depth underwater oil-gas multiphase flowmeter Download PDFInfo
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- CN108827408B CN108827408B CN201810644146.8A CN201810644146A CN108827408B CN 108827408 B CN108827408 B CN 108827408B CN 201810644146 A CN201810644146 A CN 201810644146A CN 108827408 B CN108827408 B CN 108827408B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
- G01F1/36—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
- G01F1/40—Details of construction of the flow constriction devices
- G01F1/44—Venturi tubes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/14—Casings, e.g. of special material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F22/00—Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for
- G01F22/02—Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for involving measurement of pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
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- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention relates to a large-depth underwater oil-gas multiphase flowmeter which comprises a flowmeter body, wherein the inner cavity of the flowmeter body is a Venturi tube, the middle of the outer part of the flowmeter body is of a cuboid structure, and two ends of the flowmeter body are respectively extended with a butt flange; two groups of symmetrical differential pressure sensors and two groups of pressure sensors are arranged on one group of opposite surfaces of the cuboid structure, and sensor protective covers are arranged outside the two groups of differential pressure sensors; the other group of opposite surfaces of the cuboid structure are respectively provided with a first external thread joint, a gamma ray source, a ray transmitting end T-shaped transparent window and a ray source cabin protective cover, a second external thread joint, a ray receiving end T-shaped transparent window, a metering unit integrated circuit board, a semiconductor array receiver and an electronic cabin protective cover; the device can continuously measure the volume and the mass flow of multiphase mixtures such as oil, gas and water in a submarine delivery pipeline in real time, and can test the internal pressure and the external pressure of equipment, and has the advantages of compact structure, convenience in operation, good pressure resistance and sealing property, reliability in operation, high measurement precision and the like.
Description
Technical Field
The invention relates to the technical field of deep sea oil and gas exploitation and measurement equipment, in particular to a large-depth underwater oil and gas multiphase flowmeter.
Background
The production of oil and gas on the seabed needs to monitor the output of a single well in real time to evaluate the productivity, and therefore, the content of liquid, gas and other multiphase mixed output of an oil and gas field needs to be measured and analyzed. In the prior art, a separate metering method is adopted, the system is huge, an underwater separator and auxiliary equipment with complex structures are needed, multiphase mixed products to be measured are pre-separated, great inconvenience is brought to assembly and operation processes, a large-depth underwater oil-gas flow meter needs to bear the action of still water pressure and external pressure of a deep sea environment, meanwhile, oil-gas media in an inner cavity of the large-depth underwater oil-gas flow meter can also bring great internal pressure load, therefore, the pressure-resistant sealing performance and the measurement precision of the large-depth underwater oil-gas flow meter can be affected, the yield loss caused by metering errors is easily caused, and the recovery ratio and the production efficiency of a deep sea oil-gas reservoir are affected.
Disclosure of Invention
The applicant aims at the defects in the prior art, provides a large-depth underwater oil-gas multiphase flowmeter which is compact in structure and obvious in volume advantage, can directly measure the volume and mass flow of multiphase mixtures such as oil, gas and water in a conveying pipeline in real time without pre-separation, is reliable in pressure resistance and sealing performance, can perform pressure resistance sealing test of an integral structure under internal and external pressure, can accurately know the yield and component change of a submarine oil-gas well, timely optimizes an exploitation scheme and production parameters, and improves the production efficiency according to exploitation requirements of the submarine oil-gas well.
The technical scheme adopted by the invention is as follows:
a large-depth underwater oil-gas multiphase flowmeter comprises a flowmeter body, wherein an inner cavity of the flowmeter body is a Venturi tube, the Venturi tube is formed by sequentially connecting an inlet section, a contraction section, a throat part and a diffusion section, the middle of the outer part of the flowmeter body is of a cuboid structure, and two ends of the flowmeter body are respectively extended with a butt flange; two groups of differential pressure sensors and two groups of pressure sensors are symmetrically arranged on one group of opposite surfaces of the cuboid structure, two ends of each group of differential pressure sensors are respectively connected into an inlet mounting hole and a throat mounting hole, and the inlet mounting hole and the throat mounting hole are respectively arranged in the flowmeter body and are communicated with an inner cavity of the flowmeter body; two oblique mounting holes communicated with the inner cavity of the flowmeter body are formed in the cross section where the throat mounting hole is located, the pressure sensors are mounted in the oblique mounting holes, and sensor protective covers fixed with the flowmeter body are arranged outside the two groups of differential pressure sensors; stepped holes are respectively formed in the other group of opposite surfaces of the cuboid structure, a first external thread joint made of tungsten alloy and a second external thread joint with a conical inner cavity are respectively installed in the two stepped holes, the end part of the first external thread joint is tightly pressed with a T-shaped through window of a ray emission end through a plurality of fluororubber O-shaped rings, a gamma ray source is installed at the middle position of the end part of the first external thread joint through an inner hexagonal compression screw, and a ray source cabin protective cover fixed with the flowmeter body is arranged outside the first external thread joint; the end part of the second external thread joint is tightly pressed with the T-shaped through window of the ray receiving end through a plurality of fluororubber O-shaped rings, an electronic cabin protective cover fixed with the flowmeter body is arranged outside the second external thread joint, a circuit board mounting base is mounted on the inner wall of the second external thread joint, and a metering unit integrated circuit board and a semiconductor array receiver are mounted on the circuit board mounting base.
The further technical scheme is as follows:
the outer end face of two flange joints all is connected with oil and gas delivery pipe through external pressure sealing ring, bipyramid ring, and two flange joints's outer wall all becomes the stair structure, and the bellying department of stair structure is equipped with the clamp with oil and gas delivery pipe's flange joint, and the clamp is two half-disk structures to through stud nut and spring washer locking, two awl rings and external pressure sealing ring near, all install fluororubber O type circle in the recess of external pressure sealing ring both sides.
The outer end faces of the two butt-joint flanges are respectively connected with a blind plate, a blind plate threaded hole is formed in the end face of the blind plate, and a through hole extends from one end of the blind plate threaded hole and is communicated with the inner cavity of the flowmeter body; and a first differential pressure sensor plug and a second differential pressure sensor plug are respectively arranged in the inlet mounting hole and the throat mounting hole, and a pressure sensor plug is arranged in the oblique mounting hole.
The blind plate threaded hole is connected with the blind plate plug, and the top of the electronic cabin protective cover is connected with the electronic cabin plug.
The inlet section is internally provided with a first pressure taking hole, the throat section is internally provided with a second pressure taking hole and a third pressure taking hole, the first pressure taking hole and the second pressure taking hole correspond to the inlet mounting hole and the throat mounting hole respectively, and the third pressure taking hole corresponds to the oblique mounting hole.
And V-shaped oblique crossing holes are formed in the cross sections of the throat mounting hole and the oblique mounting hole, each V-shaped oblique crossing hole comprises two symmetrical V-shaped pore passages, two groups of wires of the differential pressure sensor and the pressure sensor penetrate through the two pore passages respectively and are connected to the metering unit integrated circuit board, and the threaded V-shaped oblique crossing holes are sealed by epoxy resin or silicon rubber.
And contacts extend from two ends of the differential pressure sensor through S-shaped bent pipe structures respectively.
And a plurality of fluororubber O-shaped rings are arranged on the end faces of the ray transmitting end T-shaped through window and the ray receiving end T-shaped through window, which are in contact with the flowmeter body.
The head parts of the ray transmitting end T-shaped transparent window and the ray receiving end T-shaped transparent window are in butt joint with the throat part, and the ray transmitting end T-shaped transparent window and the ray receiving end T-shaped transparent window are both made of PEEK materials.
And the top of the electronic cabin protective cover is connected with a pressure-resistant watertight cable.
The invention has the following beneficial effects:
1. the invention has compact and reasonable structure and convenient operation, and two sets of differential pressure sensors and pressure sensors are respectively arranged to back up each other, thereby improving the redundancy and reliability of the system work;
2. the two ends of the differential pressure sensor are provided with the S-shaped bent pipe structures, so that certain longitudinal stretching deformation can be absorbed, and the differential pressure sensor is more convenient to mount;
3. each sealing surface of the invention adopts a multiple sealing structure: the spring gasket can prevent the assembly structure from loosening under external pressure, so that the sealing surfaces are always tightly attached to each other to ensure the sealing effect; the fluororubber O-shaped ring can resist the high temperature of oil-gas media, so that the sealing reliability of the flowmeter during long-term underwater work is greatly improved;
4. the T-shaped transparent window at the ray receiving end and the T-shaped transparent window at the ray transmitting end are made of PEEK materials, have good wave permeability, can bear the internal pressure load of oil gas, and do not contain toxic substances such as traditional beryllium sheets and the like;
5. the semiconductor array receiver achieves the cooling effect through the underwater environment, an additional cooling system is not needed, the cost is saved, and the operation reliability is high;
6. the V-shaped oblique hole can realize the communication between the sensor protection cover and the electronic cabin protection cover, and the included angle is larger, so that the difficulty of turning of threading of the orthogonal hole can be avoided, and the interference of an O-shaped ring groove on the surface of the flowmeter body structure on a line is reduced;
7. the invention can also carry out the pressure-resistant sealing performance test through the components such as the flowmeter body, the sensor protection cover, the electronic cabin protection cover, the radiation source cabin protection cover, the hoop and the like, and the high-pressure hose, the pressure gauge, the control valve and other equipment are connected through the blind plate threaded hole 23, and the high-pressure pump is used for applying the internal pressure; avoid damaging relevant sensor through the replacement end cap, convenient operation, the flexibility is high.
Drawings
Fig. 1 is a schematic structural view (full sectional view) of the present invention.
Fig. 2 is a full sectional view taken along section B-B in fig. 1.
Fig. 3 is a partially enlarged view of a portion a in fig. 2.
Fig. 4 is a cross-sectional view taken along section C-C in fig. 1.
Fig. 5 is a cross-sectional view taken along section D-D in fig. 1.
Fig. 6 is a schematic view showing an assembly structure of the clip of the present invention.
FIG. 7 is a schematic view of the present invention with a replaceable blind plate.
FIG. 8 is an installation schematic of an electronic capsule bulkhead, a first differential pressure sensor bulkhead, and a pressure sensor bulkhead of the present invention.
FIG. 9 is a schematic view of the installation of a second differential pressure sensor plug of the present invention.
Wherein: 1. a flowmeter body; 2. a sensor protection cover; 3. a differential pressure sensor; 4. externally pressing the sealing ring; 5. a double conical ring; 6. clamping a hoop; 7. stud bolts and nuts; 8. an oil gas delivery pipe; 9. an electronics compartment protective cover; 10. a second external threaded joint; 11. a ray receiving end T-shaped transparent window; 12. a pressure-resistant watertight cable; 13. a semiconductor array receiver; 14. a metering unit integrated circuit board; 15. a ray emitting end T-shaped transparent window; 16. a first male connection; 17. a radiation source cabin protective cover; 18. a gamma ray source; 19. a socket head cap compression screw; 20. a pressure sensor; 21. a blind plate; 22. a blind plate plug; 23. blind plate threaded holes; 24. an electronic compartment plug; 25. a first differential pressure sensor plug; 26. a second differential pressure sensor plug; 27. a pressure sensor plug; 101. an inlet section; 102. a contraction section; 103. a throat; 104. a diffuser section; 105. butting flanges; 106. a first pressure tapping hole; 107. a second pressure tapping hole; 108. a third pressure tapping hole; 109. v-shaped oblique crossing holes; 110. a throat mounting hole; 111. an oblique mounting hole; 112. an inlet mounting hole; 301. an S-shaped bent pipe structure; 901. the circuit board mounts the base.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the large-depth underwater oil-gas multiphase flowmeter of the present embodiment includes a flowmeter body 1, an inner cavity of the flowmeter body 1 is a venturi tube, the venturi tube is formed by sequentially connecting an inlet section 101, a contraction section 102, a throat 103 and a diffusion section 104, the middle of the exterior of the flowmeter body 1 is a rectangular parallelepiped structure, and two ends of the flowmeter body extend to form a docking flange 105; two groups of symmetrical differential pressure sensors 3 and two groups of pressure sensors 20 are symmetrically arranged on one group of opposite surfaces of the cuboid structure, contacts extend from two ends of each group of differential pressure sensors 3 through an S-shaped bent pipe structure 301 respectively, the contacts at two ends of each differential pressure sensor 3 are connected in an inlet mounting hole 112 and a throat mounting hole 110 respectively, and the inlet mounting hole 112 and the throat mounting hole 110 are arranged on the flowmeter body 1 respectively and communicated with an inner cavity of the flowmeter body 1; two oblique mounting holes 111 communicated with the inner cavity of the flowmeter body 1 are arranged on the cross section of the throat mounting hole 110, a pressure sensor 20 is arranged in each oblique mounting hole, and a sensor protection cover 2 fixed with the flowmeter body 1 is arranged outside each two groups of differential pressure sensors 3;
outer end faces of the two butt flange 105 are connected with the oil and gas conveying pipe 8 through the external pressure sealing ring 4 and the double cone rings 5, the outer walls of the two butt flange 105 are of step structures, the protruding portion of each step structure is provided with a clamp 6 connected with the oil and gas conveying pipe 8, each clamp 6 is of a two-half-disc structure and is locked through a stud nut 7 and a spring gasket, the double cone rings 5 and the external pressure sealing ring 4 abut against each other, fluororubber O-shaped rings are installed in grooves in two sides of the external pressure sealing ring 4, and the fluororubber O-shaped rings can bear the high temperature of oil and gas media of about 150 ℃.
As shown in fig. 2 and 3, a first external thread joint 16 made of tungsten alloy and a second external thread joint 10 with a conical inner cavity are respectively installed on the other group of opposite surfaces of the cuboid structure, the end part of the first external thread joint 16 is tightly pressed with a ray emission end T-shaped through window 15 through a plurality of fluororubber O-rings, a gamma ray source 18 is installed inside the first external thread joint 16 through an inner hexagonal compression screw 19, and a ray source cabin protective cover 17 fixed with the flowmeter body 1 is arranged outside the first external thread joint 16; the end part of the second external thread joint 10 is tightly pressed with a T-shaped through window 11 at a ray receiving end through a plurality of fluororubber O-shaped rings, an electronic cabin protective cover 9 fixed with the flowmeter body 1 is arranged outside the second external thread joint 10, a circuit board mounting base 901 is installed on the inner wall of the second external thread joint, and a metering unit integrated circuit board 14 and a semiconductor array receiver 13 are installed on the circuit board mounting base 901; the head parts of the ray transmitting end T-shaped transparent window 15 and the ray receiving end T-shaped transparent window 11 are butted with the throat part 103; the top of the electronic compartment protection cover 9 is connected with a pressure-resistant watertight cable 12.
A first pressure obtaining hole 106 is formed in the inlet section 101, a second pressure obtaining hole 107 and a third pressure obtaining hole 108 are formed in the throat portion 103, the first pressure obtaining hole 106 and the second pressure obtaining hole 107 correspond to the inlet mounting hole 112 and the throat portion mounting hole 110 respectively, and the third pressure obtaining hole 108 corresponds to the oblique mounting hole 111.
As shown in fig. 4, a V-shaped oblique hole 109 is formed in the cross section of the throat mounting hole 110 and the oblique mounting hole 111, the V-shaped oblique hole 109 includes two symmetrical V-shaped hole channels, two sets of wires of the differential pressure sensor 3 and the pressure sensor 20 respectively pass through the two hole channels and are connected to the metering unit integrated circuit board 14, and the threaded V-shaped oblique hole 109 is sealed with epoxy resin or silicon rubber.
As shown in fig. 5, one end of the differential pressure sensor is connected to an inlet mounting hole 112, and the inlet mounting hole 112 communicates with the inlet section 101 of the internal cavity of the flowmeter body 1.
And a plurality of fluororubber O-shaped rings are arranged on the end surfaces of the ray transmitting end T-shaped through window 15 and the ray receiving end T-shaped through window 11, which are in contact with the flowmeter body 1.
The ray transmitting end T-shaped transparent window 15 and the ray receiving end T-shaped transparent window 11 are both made of PEEK (polyether ether ketone) materials, have good wave permeability, can bear the internal pressure load of oil gas, can ensure gamma rays to penetrate through, and do not contain toxic substances such as beryllium pieces and the like.
As shown in fig. 6, the clamp 6 has two semicircular plates and is locked by the stud nut 7 and the spring washer.
As shown in fig. 7, the two butt flanges 105 are respectively connected with a blind plate 21, a blind plate threaded hole 23 is formed in the end surface of the blind plate 21, a through hole extends from one end of the blind plate threaded hole 23 and is communicated with the inner cavity of the flowmeter body 1, and the blind plate threaded hole 23 is connected with a blind plate plug 22; an electronic cabin plug 24 is connected to the top of the electronic cabin protective cover 9.
As shown in fig. 8 and 9, the first differential pressure sensor plug 25 and the second differential pressure sensor plug 26 are mounted in the inlet mounting hole 112 and the throat mounting hole 110, respectively, and the pressure sensor plug 27 is mounted in the oblique mounting hole 111.
The working principle and the main functions of each part of the large-depth underwater oil-gas multiphase flowmeter are as follows:
the first external thread joint 16 made of tungsten alloy can shield radiation and can protect a gamma ray source, gamma rays emitted by the gamma ray source 18 penetrate through a ray emitting end T-shaped through window 15, irradiate multiphase mixtures such as oil, gas and water of the throat 103 and the like, then penetrate through a ray receiving end T-shaped through window 11, finally irradiate on a semiconductor array receiver 13 through a conical inner cavity of the second external thread joint 10, the sensitivity difference of various phase objects such as oil, gas and water and the like to various energy levels of the gamma rays is measured, and the measuring unit integrated circuit board 14 comprehensively analyzes the measured data of the differential pressure sensor 3, the pressure sensor 20 and the semiconductor array receiver 13, and calculates the volume flow, the mass flow and the like of various phase media. And a pressure-resistant watertight cable 12 arranged on the top of the electronic cabin protection cover 9 can transmit the data from the water to the water surface.
The redundancy and the reliability of the system work can be improved by two sets of differential pressure sensors and two sets of pressure sensors; the two ends of the differential pressure sensor 3 are provided with S-shaped bent pipe structures 301 which can absorb certain longitudinal expansion deformation, so that the two ends of the differential pressure sensor 3 are more easily arranged in the throat mounting hole 110 and the inlet mounting hole 112; the differential pressure sensor 3 can measure the pressure difference of the oil-gas medium at the inlet section 101 and the throat part 103, and the pressure sensor 20 can measure the absolute pressure of the throat part 103;
the sensor protection cover 2, the electronic cabin protection cover 9 and the radiation source cabin protection cover 17 play a role in pressure-resistant sealing, and provide a normal-pressure and dry-type environment for the sensor and the like; a plurality of fluororubber O-shaped rings are arranged on sealing surfaces such as the fixed connection positions of the surface of the flowmeter body 1 and parts such as the sensor protection cover 2, the radiation source cabin protection cover 17, the electronic cabin protection cover 9 and the like, the double conical rings 5 can realize the sealing of an inner cavity under internal pressure, and the external pressure sealing ring 4 can realize the sealing of the inner cavity under external pressure by means of the fluororubber O-shaped rings on the two sides; the clamp 6, the stud bolt and nut 7, the butt flange 105 and the like can be loosened under the action of external seawater pressure, so that the sealing surfaces are always tightly attached by virtue of the spring gasket, and the sealing reliability of the flowmeter in long-term underwater operation is greatly improved;
the V-shaped oblique hole 109 can be used for the lead wires of the differential pressure sensor 3 and the pressure sensor 20 to pass through and enter the electronic cabin protective cover 9, and is connected to the metering unit integrated circuit board 14; the V-shaped oblique crossing hole 109 can realize the communication between the sensor protection cover 2 and the inner space of the electronic cabin protection cover 9, the included angle between two pore passages of the V-shaped oblique crossing hole 109 is large, the difficulty that the threading of a right-angle orthogonal hole turns can be avoided, the interference with an O-shaped ring groove on the surface of a flowmeter body structure is also reduced, after the threading of the V-shaped oblique crossing hole 109 is completed, the V-shaped oblique crossing hole is sealed by epoxy resin or silicon rubber, and the mutual influence of the sensor protection cover 2 and the electronic cabin protection cover 9 due to possible leakage is avoided.
Seawater outside the electronic cabin protective cover 9 has a cooling effect on the semiconductor array receiver 13, and an additional cooling system is not needed;
most components such as the flowmeter body 1, the hoop 6, the butt flange 105, the protective covers and the like are machined and formed by high-strength steel forgings, and can bear large-depth hydrostatic external pressure and high oil-gas internal pressure;
the components such as the flowmeter body 1, the sensor protection cover 2, the electronic cabin protection cover 9, the radiation source cabin protection cover 17, the hoop 6 and the like can be integrally subjected to pressure sealing performance test, and related sensors are prevented from being damaged by replacing plugs. During internal pressure testing, a first differential pressure sensor plug 25, a second differential pressure sensor plug 26 and a pressure sensor plug 27 are installed firstly, then blind plates 21 are installed at two ends of the flowmeter body 1, equipment such as a high-pressure hose, a pressure gauge or a control valve is connected through blind plate threaded holes 23, and a high-pressure pump is used for applying internal pressure; in addition, external pressure tests can be performed in the pressure tube apparatus by adding the blind plug 22, the electronic compartment plug 24, and the like.
The above description is intended to be illustrative and not restrictive, and the scope of the invention is defined by the appended claims, which may be modified in any manner within the scope of the invention.
Claims (9)
1. The utility model provides a heterogeneous flowmeter of oil gas under large depth water which characterized in that: the flowmeter comprises a flowmeter body (1), wherein an inner cavity of the flowmeter body (1) is a Venturi tube, the Venturi tube is formed by sequentially connecting an inlet section (101), a contraction section (102), a throat part (103) and a diffusion section (104), the middle of the outer part of the flowmeter body (1) is of a cuboid structure, and two ends of the flowmeter body are respectively extended with a butt flange (105); two groups of differential pressure sensors (3) and two groups of pressure sensors (20) are symmetrically arranged on one group of opposite surfaces of the cuboid structure, two ends of each group of differential pressure sensors (3) are respectively connected into an inlet mounting hole (112) and a throat mounting hole (110), and the inlet mounting hole (112) and the throat mounting hole (110) are respectively arranged in the flowmeter body (1) and are communicated with an inner cavity of the flowmeter body (1); two oblique mounting holes (111) communicated with the inner cavity of the flowmeter body (1) are formed in the cross section where the throat mounting hole (110) is located, the pressure sensor (20) is mounted in the oblique mounting holes, and sensor protection covers (2) fixed with the flowmeter body (1) are arranged outside the two groups of differential pressure sensors (3);
stepped holes are formed in the other group of opposite surfaces of the cuboid structure respectively, a first external thread joint (16) made of tungsten alloy and a second external thread joint (10) with a conical inner cavity are installed in the two stepped holes respectively, the end part of the first external thread joint (16) is tightly pressed with a T-shaped through window (15) of a ray emission end through a plurality of fluororubber O-shaped rings, a gamma ray source (18) is installed in the middle of the end part of the first external thread joint (16) through an inner hexagonal compression screw (19), and a ray source cabin protective cover (17) fixed with the flowmeter body (1) is arranged outside the first external thread joint (16); the end part of the second external threaded joint (10) is tightly pressed with a T-shaped through window (11) at a ray receiving end through a plurality of fluororubber O-shaped rings, an electronic cabin protective cover (9) fixed with the flowmeter body (1) is arranged outside the second external threaded joint (10), a circuit board mounting base (901) is installed on the inner wall of the second external threaded joint, and a metering unit integrated circuit board (14) and a semiconductor array receiver (13) are installed on the circuit board mounting base (901);
the cross section of the throat mounting hole (110) and the cross section of the oblique mounting hole (111) are provided with a V-shaped oblique crossing hole (109), the V-shaped oblique crossing hole (109) comprises two symmetrical V-shaped pore passages, the two pore passages respectively penetrate through the leads of the two groups of differential pressure sensors (3) and the pressure sensor (20) and are connected to the metering unit integrated circuit board (14), and the threaded V-shaped oblique crossing hole (109) is sealed by epoxy resin or silicon rubber.
2. The large depth subsea multiphase flow meter of claim 1, wherein: outer terminal surface of two flange joints (105) all is connected with oil gas delivery pipe (8) through external pressure sealing ring (4), bipyramid ring (5), and the outer wall of two flange joints (105) all becomes the stair structure, and the protruding department of stair structure is equipped with clamp (6) with the flange joint of oil gas delivery pipe (8), and clamp (6) are two semicircle chip architecture to lock through stud nut (7) and spring washer, bipyramid ring (5) and external pressure sealing ring (4) near, all install fluororubber O type circle in the recess of external pressure sealing ring (4) both sides.
3. The large depth subsea multiphase flow meter of claim 1, wherein: the outer end faces of the two butt-joint flanges (105) are respectively connected with a blind plate (21), a blind plate threaded hole (23) is formed in the end face of the blind plate (21), and a through hole extends from one end of the blind plate threaded hole (23) and is communicated with the inner cavity of the flowmeter body (1); a first differential pressure sensor plug (25) and a second differential pressure sensor plug (26) are respectively arranged in the inlet mounting hole (112) and the throat mounting hole (110), and a pressure sensor plug (27) is arranged in the oblique mounting hole (111).
4. The large depth subsea multiphase flow meter of claim 3, wherein: the blind plate threaded hole (23) is connected with the blind plate plug (22), and the top of the electronic cabin protective cover (9) is connected with the electronic cabin plug (24).
5. The large depth subsea multiphase flow meter of claim 1, wherein: the top of the electronic cabin protection cover (9) is connected with a pressure-resistant watertight cable (12).
6. The large depth subsea multiphase flow meter of claim 1, wherein: the pressure measuring device is characterized in that a first pressure measuring hole (106) is formed in the inlet section (101), a second pressure measuring hole (107) and a third pressure measuring hole (108) are formed in the throat portion (103), the first pressure measuring hole (106) and the second pressure measuring hole (107) correspond to the inlet mounting hole (112) and the throat portion mounting hole (110) respectively, and the third pressure measuring hole (108) corresponds to the oblique mounting hole (111).
7. The large depth subsea multiphase flow meter of claim 1, wherein: contacts extend from two ends of the differential pressure sensor (3) through the S-shaped bent pipe structure (301).
8. The large depth subsea multiphase flow meter of claim 1, wherein: and a plurality of fluororubber O-shaped rings are arranged on the end faces of the ray transmitting end T-shaped through window (15) and the ray receiving end T-shaped through window (11) which are in contact with the flowmeter body (1).
9. The large depth subsea multiphase flow meter of claim 1, wherein: the head parts of the ray transmitting end T-shaped transparent window (15) and the ray receiving end T-shaped transparent window (11) are in butt joint with the throat part (103), and the ray transmitting end T-shaped transparent window (15) and the ray receiving end T-shaped transparent window (11) are both made of PEEK materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810644146.8A CN108827408B (en) | 2018-06-21 | 2018-06-21 | Large-depth underwater oil-gas multiphase flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810644146.8A CN108827408B (en) | 2018-06-21 | 2018-06-21 | Large-depth underwater oil-gas multiphase flowmeter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108827408A CN108827408A (en) | 2018-11-16 |
| CN108827408B true CN108827408B (en) | 2020-04-07 |
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| RU220701U1 (en) * | 2023-06-28 | 2023-09-28 | Акционерное общество "РусВэллГруп" | Multiphase flowmeter with fast neutron source |
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| CN112033481A (en) * | 2020-07-30 | 2020-12-04 | 森诺科技有限公司 | Gas well underground throttling two-phase metering device and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202947765U (en) * | 2012-11-14 | 2013-05-22 | 中国船舶重工集团公司第七一九研究所 | Flow measuring system for boat power device |
| CN105486358A (en) * | 2015-11-19 | 2016-04-13 | 中国石油大学(华东) | Gas-liquid two-phase flow parameter measuring method based on double-differential pressure of Venturi tube |
| CN106706047A (en) * | 2017-01-10 | 2017-05-24 | 海默科技（集团）股份有限公司 | Underwater multiphase flowmeter based on Ba133 |
| CN107436165A (en) * | 2017-08-10 | 2017-12-05 | 海默科技（集团）股份有限公司 | The method of single source ray measure multiphase flow phase fraction |
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| GB2433315B (en) * | 2005-12-17 | 2008-07-09 | Schlumberger Holdings | Method and system for analyzing multi-phase mixtures |
| RU2632251C2 (en) * | 2013-03-20 | 2017-10-03 | Жеосервис Экипман Сас | Radioactive radiation source |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202947765U (en) * | 2012-11-14 | 2013-05-22 | 中国船舶重工集团公司第七一九研究所 | Flow measuring system for boat power device |
| CN105486358A (en) * | 2015-11-19 | 2016-04-13 | 中国石油大学(华东) | Gas-liquid two-phase flow parameter measuring method based on double-differential pressure of Venturi tube |
| CN106706047A (en) * | 2017-01-10 | 2017-05-24 | 海默科技（集团）股份有限公司 | Underwater multiphase flowmeter based on Ba133 |
| CN107436165A (en) * | 2017-08-10 | 2017-12-05 | 海默科技（集团）股份有限公司 | The method of single source ray measure multiphase flow phase fraction |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU220701U1 (en) * | 2023-06-28 | 2023-09-28 | Акционерное общество "РусВэллГруп" | Multiphase flowmeter with fast neutron source |
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