CN112844881A - Axial-flow type cyclone separation and water ring lubricating and resistance reducing device - Google Patents
Axial-flow type cyclone separation and water ring lubricating and resistance reducing device Download PDFInfo
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- CN112844881A CN112844881A CN202011635738.7A CN202011635738A CN112844881A CN 112844881 A CN112844881 A CN 112844881A CN 202011635738 A CN202011635738 A CN 202011635738A CN 112844881 A CN112844881 A CN 112844881A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 91
- 238000000926 separation method Methods 0.000 title claims abstract description 49
- 230000001050 lubricating effect Effects 0.000 title claims description 6
- 239000007788 liquid Substances 0.000 claims abstract description 66
- 238000005461 lubrication Methods 0.000 claims abstract description 19
- 230000009467 reduction Effects 0.000 claims abstract description 8
- 239000010779 crude oil Substances 0.000 abstract description 23
- 239000003921 oil Substances 0.000 abstract description 22
- 230000000694 effects Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000002146 bilateral effect Effects 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 abstract description 4
- 239000003129 oil well Substances 0.000 abstract description 3
- 239000000295 fuel oil Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003027 oil sand Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
- B04C5/08—Vortex chamber constructions
- B04C5/081—Shapes or dimensions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
- B04C5/08—Vortex chamber constructions
- B04C5/103—Bodies or members, e.g. bulkheads, guides, in the vortex chamber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
- B04C5/12—Construction of the overflow ducting, e.g. diffusing or spiral exits
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
- B04C5/14—Construction of the underflow ducting; Apex constructions; Discharge arrangements ; discharge through sidewall provided with a few slits or perforations
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
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Abstract
The invention discloses an axial-flow type rotational flow separation and water ring lubrication resistance reducing device, which adopts a rotational flow pipe structure sequentially comprising a liquid inlet spiral pipe section, a rotational flow section and a discharge pipe section from one end to the other end, wherein a spiral cavity is arranged in the liquid inlet spiral pipe section, the rotational flow section structure with a gradually reduced cavity is adopted, oil-water separation and pipeline interface lubrication resistance reduction can be realized, after a crude oil produced liquid enters an axial inlet cyclone with a spiral flow passage, linear flow can be changed into low-speed rotating flow along the spiral flow passage, collision between the fluid and the wall surface can be greatly reduced, energy loss is further reduced, the crude oil produced liquid, particularly redundant water phase in the high-water-content oil well produced liquid, can be separated through a separation cavity and a discharge pipe section, the crude oil production and subsequent crude oil treatment costs can be effectively reduced, the other end of the rotational flow section is communicated with a bilateral discharge pipe, and the oil can be separated, the oil-liquid separation effect is effectively improved, and the production and conveying efficiency of heavy crude oil is greatly improved.
Description
Technical Field
The invention belongs to the field of energy conservation and resistance reduction of petroleum shaft lifting and deepwater riser conveying, and particularly relates to an axial-flow type cyclone separation and water ring lubrication resistance reduction device.
Background
With the increasing depletion of conventional petroleum resources, unconventional heavy crude oil will be a strategic replacement resource for global oil and gas development in the 21 st century. The reserves of world heavy crude oil and oil sand are two times more than that of conventional crude oil, and account for 70 percent of the surplus reserves of the world, the heavy oil resources in China are also quite abundant, the reserves are about 250 hundred million tons, the yield only accounts for about 12 percent of the total yield of the crude oil, and the development potential is huge.
However, the high viscosity of heavy oil and its severe adhesion to the walls of the pipe present significant difficulties in the production and transportation of heavy oil. The conventional heavy oil recovery and transportation method mainly comprises heating and modification, but the oil products are required to be integrally treated, and the conventional heavy oil recovery and transportation method has the general limitations of large treatment capacity, high energy consumption and operation cost and the like. The water ring drag reduction method is considered to be one of the most promising heavy oil recovery and transportation methods due to the advantages of almost no change of the physical properties of heavy oil, low energy consumption, no pollution to the environment and the like. However, the formation of the lubricating water ring of the vertical shaft or the vertical pipe is generally realized by pumping the water ring generator through a special water diversion mechanism, which undoubtedly can significantly increase the water consumption, the energy consumption and the dehydration load of the production and transportation terminal. Along with the development of the heavy oil field, the water content of produced liquid is gradually increased in the middle and later stages, so that the oil extraction efficiency is obviously reduced. How to simultaneously realize oil-water pre-separation and heavy oil flow lubrication drag reduction in a shaft or a deepwater vertical pipe is one of the problems faced by the current heavy oil recovery and transportation technology.
Disclosure of Invention
The invention aims to provide an axial-flow type cyclone separation and water ring lubrication resistance reducing device to overcome the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
an axial-flow type rotational flow separation and water ring lubrication resistance reducing device comprises a rotational flow pipe, wherein the rotational flow pipe is sequentially provided with a liquid inlet spiral pipe section, a rotational flow section and a discharge pipe section from one end to the other end, a spiral cavity is arranged in the liquid inlet spiral pipe section, one end of the liquid inlet spiral pipe section is a liquid inlet, and the other end of the liquid inlet spiral pipe section is communicated with one end of the rotational flow section; the inside convergent cavity that is of whirl section, the outer lane of whirl section is equipped with the separation body, form the separation cavity between whirl section and the separation body, be equipped with the drain pipe of intercommunication separation cavity on the separation body, the hole that removes has evenly been seted up to whirl section lateral wall, whirl section other end intercommunication has two side fluid-discharge tubes, the inlayer pipe wall of two side fluid-discharge tubes stretches into the whirl section in, the inlayer pipe wall is located the inside overflow pipe section that is divided into of whirl section, be equipped with the section stopper that the circumference interval set up between the inlayer pipe wall of two side fluid-discharge tubes and the outer.
Furthermore, the inner layer pipe wall is a gradually expanding cavity from one end of the connecting rotational flow section to the other end.
Further, the drain pipe sets up in the whirl section export section outside, is equipped with the ball valve on the drain pipe.
Furthermore, the liquid inlet spiral pipe section comprises a spiral inner pipe and a spiral outer pipe, a spiral flow passage is formed between the spiral inner pipe and the spiral outer pipe, and a through hole structure is formed in the middle of the spiral inner pipe.
Furthermore, the inlet inclination angle of the liquid inlet spiral pipe section is 10-20 degrees.
Further, the ratio of the groove depth of the spiral flow channel of the liquid inlet spiral pipe section to the outer diameter of the spiral outer pipe is 0.15-0.2.
Furthermore, the whirl section includes coaxial first whirl chamber and second whirl chamber, and first whirl chamber and second whirl chamber are reducing cylinder structure, and the tapering in first whirl chamber is less than the tapering in second whirl chamber, and two whirl chamber cone angles are all within 3.
Furthermore, the inlet end of the inner-layer pipe wall gradually-expanding structure reversely extends from the bottom of the second cyclone cavity to the cavity to form an oil phase overflow pipe section, and the ratio of the diameter of an end overflow port of the overflow pipe section to the diameter of the bottom of the second cyclone cavity is 0.5-0.8.
Further, the ratio of the length of the overflow pipe section to the height of the second vortex cavity is not more than 0.4.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention relates to an axial-flow type rotational flow separation and water ring lubrication resistance reducing device, which adopts a rotational flow pipe structure sequentially comprising a liquid inlet spiral pipe section, a rotational flow section and a discharge pipe section from one end to the other end, wherein a spiral cavity is arranged in the liquid inlet spiral pipe section, the rotational flow section structure with a gradually reduced cavity is adopted, oil-water separation and pipeline interface lubrication resistance reduction can be realized, after a crude oil produced liquid enters an axial inlet cyclone with a spiral flow passage, linear flow can be changed into low-speed rotating flow along the spiral flow passage, collision between fluid and a wall surface can be greatly reduced, energy loss is further reduced, redundant water phase in the crude oil produced liquid, particularly in a high water-content oil well produced liquid, can be separated through a separation cavity and a discharge pipe section, the crude oil production and subsequent crude oil treatment costs can be effectively reduced, the other end of the rotational flow section is communicated with a bilateral discharge pipe, and oil can be separated, the oil-liquid separation effect is effectively improved, and the production and conveying efficiency of heavy crude oil is greatly improved.
Furthermore, the high-efficiency separation of oil-water mixed liquid can be realized by adopting a coaxially connected double-cone structure, the pipe diameter taper is increased, so that the liquid is accelerated to flow in a second cyclone cavity in a rotating manner, the oil-liquid separation effect is effectively improved, the energy consumed by the cyclone separation is lower, and the pressure loss is smaller.
Further, the ratio of the groove depth of the spiral flow channel of the liquid inlet spiral pipe section to the outer diameter of the spiral outer pipe is 0.15-0.2, so that the crude oil produced liquid can rotate in the liquid inlet spiral pipe section in an accelerated manner.
Furthermore, the ratio of the length of the overflow pipe section to the height of the second rotational flow cavity is not more than 0.4, so that the energy loss generated by rotational flow of the produced liquid in the second rotational flow cavity is reduced, the oil phase is accelerated to move to the overflow port, and the concentration of the oil phase discharged from the overflow port is increased.
Furthermore, the inner pipe wall and the section plug are arranged to reduce disturbance of water flow in the annular flow passage and enhance stability of an oil-water annular flow pattern.
Drawings
Fig. 1 is a schematic structural diagram in an embodiment of the present invention.
FIG. 2 is a schematic diagram of the internal structure of the spiral flow channel of the inlet pipe in the embodiment of the present invention.
FIG. 3 is a schematic structural view of a water removal hole section A-A of the forward tapered cavity in the embodiment of the present invention.
FIG. 4 is a schematic structural diagram of a water flowing surface B-B of the intermediate water ring generator according to the embodiment of the invention.
In the figure, 1, a liquid inlet; 2. a liquid inlet spiral pipe section; 3. a spiral inner tube; 4. a spiral outer tube; 5. a first vortex chamber; 6. separating the tube body; 7. a water removal hole; 8. a second vortex chamber; 9. a drain pipe; 10. a ball valve; 11. a water outlet; 12. an overflow port; 13. an overflow pipe section; 14. a divergent pipe; 15. a section plug; 16. a double-side liquid discharge pipe; 17. and an axial outlet.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
as shown in figure 1, an axial-flow type rotational flow separation and water ring lubrication resistance reducing device comprises a rotational flow pipe, the rotational flow pipe is provided with a liquid inlet spiral pipe section 2, a rotational flow section and a discharge pipe section 16 from one end to the other end in sequence, a spiral cavity is arranged in the liquid inlet spiral pipe section 2, one end of the liquid inlet spiral pipe section 2 is a liquid inlet 1, the other end is communicated with one end of the rotational flow section, a gradually reducing cavity is arranged in the rotational flow section, a separation pipe body 6 is arranged on the outer ring of the rotational flow section, a separation cavity is formed between the rotational flow section and the separation pipe body 6, a drain pipe 9 communicated with the separation cavity is arranged on the separation pipe body 6, water removing holes 7 are uniformly arranged on the side wall of the rotational flow section, the other end of the rotational flow section is communicated with a bilateral liquid discharge pipe 16, the bilateral liquid discharge pipe 16 comprises an inner pipe wall 14 and an, the inner pipe wall 14 is positioned in the cyclone section and is divided into an overflow pipe section 13, the inner pipe wall 14 is a gradually expanding cavity from one end of the connected cyclone section to the other end, and section plugs 15 which are circumferentially arranged at intervals are arranged between the inner pipe wall 14 and the outer pipe wall of the double-side liquid discharge pipe 16. The outlet section of the double-side drain pipe 16 is a water ring generation pipe section.
As shown in fig. 1, the water discharge pipe 9 is disposed outside the outlet section of the cyclone section 2, so that the separation cavity can be filled with water separated by the cyclone section 2, the water discharge pipe 9 is provided with a ball valve 10, the other end of the ball valve 10 is provided with a water discharge port 11, and the ball valve 10 mounted on the water discharge pipe section 9 is used for adjusting the size of water entering the separation cavity.
As shown in fig. 2, the liquid inlet spiral pipe section 2 comprises a spiral inner pipe 3 and a spiral outer pipe 4, a spiral flow passage is formed between the spiral inner pipe 3 and the spiral outer pipe 4, a through hole structure is formed in the middle of the spiral inner pipe 3, the inlet inclination angle of the liquid inlet spiral pipe section 2 is 10 degrees to 20 degrees, the ratio of the groove depth of the spiral flow passage of the liquid inlet spiral pipe section 2 to the outer diameter of the spiral outer pipe 4 is 0.15 to 0.2, so that the crude oil produced liquid can rotate in the liquid inlet spiral pipe section 2 in an accelerated manner.
The whirl section includes coaxial first whirl chamber 5 and second whirl chamber 8, first whirl chamber 5 and second whirl chamber 8 are convergent circular cone structure, the tapering of first whirl chamber 5 is less than the tapering of second whirl chamber 8, and two whirl chamber cone angles all are within 3, the tapering of second whirl chamber is not more than 3 promptly, adopt coaxial continuous bipyramid structure to realize the high-efficient separation of water oil mixture, get into second whirl chamber 8 after utilizing 5 whirlpools in first whirl chamber, because the pipe diameter tapering increases, thereby liquid is at 8 whirl flows in second whirl chamber with higher speed, effectively improve the fluid separation effect, and the energy that the whirl consumes is lower, pressure loss is littleer.
As shown in fig. 3, the inner walls of the first vortex chamber 5 and the second vortex chamber 8 are coated with hydrophilic and oleophobic coatings to relieve the adhesion of viscous oil on the inner wall surfaces. The separating tube body 6 is sleeved outside the second rotational flow cavity 8, and the water removing holes 7 are uniformly formed in the tube wall of the second rotational flow cavity 8. The opening axis of the water removing hole 7 is not intersected with the axis of the second vortex cavity 8, namely the opening axis of the water removing hole 7 is arranged along the vortex direction of the liquid inlet spiral pipe section 2.
The water removal holes 7 are distributed on the wall surface of the second rotational flow cavity 8 at equal intervals, redundant water phase in the second rotational flow cavity 8 is discharged into the separation cavity from the water removal holes 7 under the action of centrifugal force and then discharged by the water discharge pipe 9, the water discharge pipe 9 is provided with a ball valve 10, the discharged water quantity is adjusted through the ball valve 10, and then the inlet oil-water ratio of the water ring generation pipe section is adjusted.
Due to the existence of the oil-water density difference, the crude oil produced liquid is subjected to cyclone centrifugal separation through a first cyclone cavity 5 and a second cyclone cavity 8; light phase oil in the second vortex cavity 8 enters the inner-layer pipe wall 14 from the overflow port 12 at the end part of the overflow pipe section 13, heavy phase water enters from an annular flow channel between the inner-layer pipe wall 14 and the outer-layer pipe wall, the inlet end of the gradually-expanding structure of the inner-layer pipe wall 14 reversely extends from the bottom of the second vortex cavity 8 to form the oil phase overflow pipe section 13, the ratio of the diameter of the overflow port 12 of the overflow pipe section 13 to the bottom diameter of the second vortex cavity 8 is 0.5-0.8, and the ratio of the length of the overflow pipe section 13 to the height of the second vortex cavity 8 is not more than 0.4, so that the energy loss generated by produced liquid in the second vortex cavity 8 is favorably reduced, the oil phase is accelerated to move to the overflow port 12, and the concentration of the oil phase discharged from the overflow port 12 is increased.
The separated oil phase flows into the water ring generation pipe section through the inner layer pipe wall 14, and the water phase enters the main pipe section of the double-side liquid discharge pipe 16 from an annular flow passage between the inner layer pipe wall 14 and the outer layer pipe wall. As shown in fig. 4, four cross-section plugs 15 are arranged on the water flow surface between the inner pipe wall 14 and the outer pipe wall, and the inner pipe wall 14 and the cross-section plugs 15 are arranged to reduce disturbance of water flow in the annular flow passage and enhance stability of an oil-water annular flow pattern.
When the device is applied, crude oil produced liquid enters the liquid inlet spiral pipe section 2 through the liquid inlet 1, is accelerated to rotate in the liquid inlet spiral pipe section 2 and then sequentially enters the first vortex cavity 5 and the second vortex cavity 8, and oil-water liquid is separated under the action of centrifugal force; heavy phase water is thrown to the outer side, light oil phase is arranged at the inner side, part of water is discharged into a separation cavity through a water removal hole 7 and then is discharged through a water removal pipe section 9, a ball valve 10 arranged on the water removal pipe section 9 is used for adjusting the content of oil and water entering a water ring generation pipe section, the rest water phase enters from an annular flow channel between an inner layer pipe wall 14 and an outer layer pipe wall, the flow channel is narrowed by the width, and the flow surface is uniformly separated by four section plugs 15 so as to reduce the radial speed of water flow; light phase oil is gathered at the axis and enters the end 14 of the inner pipe wall through the overflow port 12; the oil-water flows are intersected at the expanding position of the tail end of the inner-layer pipe wall 14 to form stable oil-water annular flow, and the stable oil-water annular flow flows into the shaft or the vertical pipe through the axial outlet 17, so that the lubricating and drag-reducing effects of viscous oil flowing in the shaft or the vertical pipe are realized.
The axial cyclone separator and the water ring generator are organically integrated to form a combined tubular element, which has the functions of oil-water separation, pipeline interface lubrication and resistance reduction and the like, and has the advantages of compact structure, small local friction resistance and good adaptability; the oil and water flow in the same direction, and compared with a tangential inlet cyclone separator, the tangential inlet cyclone separator saves space and has lower energy loss; the inner surface of the axial hydrocyclone is coated with a hydrophilic and oleophobic coating, so that the adhesion of oil phase in crude oil produced liquid on the inner wall can be effectively relieved. Compared with a cylinder axial inlet hydrocyclone, after crude oil produced liquid enters the axial inlet hydrocyclone with the spiral flow channel, linear flow can be changed into low-speed rotating flow along the spiral flow channel, collision between the fluid and the wall surface can be greatly reduced, and energy loss is further reduced. The produced liquid cyclone section adopts a double-cone structure formed by the first cyclone cavity 5 and the second cyclone cavity 8 to replace a single-cone structure, so that the flow field is more stable, and the separation efficiency is obviously improved. The separation cavity and the drainage pipe section are used for separating redundant water phases in the crude oil produced liquid, particularly the produced liquid of a high water-containing oil well, so that the crude oil production and transportation cost and the subsequent crude oil treatment cost can be effectively reduced. The ball valve is used for adjusting the optimal water content required by forming a stable oil-water annular flow pattern by entering the water ring generation pipe section from the forward conical cavity, so that the oil transportation efficiency is highest while an effective water lubricating layer is ensured to be formed. The inner pipe wall 14 of the water ring generation pipe section is a gradually expanding pipe, and the low-viscosity water phase enters the main pipe section through the annular flow channel with the width narrowed, so that the structure is beneficial to reducing the disturbance of the water phase in the pipe, and the ring forming effect is obviously improved. Four section plugs are arranged on the water flow surface, so that the circular ring surface is uniformly isolated, the radial speed of the water flow can be further reduced, the formation of secondary flow is slowed down, and the stability of oil-water annular flow is enhanced.
Claims (10)
1. An axial-flow type rotational flow separation and water ring lubrication resistance reducing device is characterized by comprising a rotational flow pipe, wherein the rotational flow pipe is sequentially provided with a liquid inlet spiral pipe section (2), a rotational flow section and a discharge pipe section (16) from one end to the other end, a spiral cavity is arranged in the liquid inlet spiral pipe section (2), one end of the liquid inlet spiral pipe section (2) is provided with a liquid inlet (1), and the other end of the liquid inlet spiral pipe section is communicated with one end of the rotational flow section; the inside convergent cavity that is of whirl section, the outer lane of whirl section is equipped with separation body (6), form the separation cavity between whirl section and the separation body (6), be equipped with drain pipe (9) that the intercommunication separates the cavity on separation body (6), whirl section lateral wall has evenly been seted up and has been removed water hole (7), whirl section other end intercommunication has two side fluid-discharge tubes (16), inlayer pipe wall (14) of two side fluid-discharge tubes (16) stretch into in the whirl section, inlayer pipe wall (14) are located whirl section inside and are divided into overflow pipe section (13), be equipped with section stopper (15) that the circumference interval set up between inlayer pipe wall (14) and the outer pipe wall of two side fluid-discharge tubes (16).
2. The axial-flow cyclonic separating and water ring lubricating and drag reducing device of claim 1, wherein the inner pipe wall (14) is a diverging cavity from one end of the connecting cyclone section to the other end.
3. The axial-flow type cyclone separation and water ring lubrication resistance reducing device is characterized in that a drain pipe (9) is arranged outside the outlet section of the cyclone section (2), and a ball valve (10) is arranged on the drain pipe (9).
4. The axial-flow type rotational flow separation and water ring lubrication resistance reducing device according to claim 1, wherein the liquid inlet spiral pipe section (2) comprises a spiral inner pipe (3) and a spiral outer pipe (4), a spiral flow passage is formed between the spiral inner pipe (3) and the spiral outer pipe (4), and the middle of the spiral inner pipe (3) is of a through hole structure.
5. The axial-flow type cyclone separation and water ring lubrication drag reduction device according to claim 1 or 4, wherein the inlet inclination angle of the liquid inlet spiral pipe section (2) is 10-20 °.
6. The axial-flow type rotational flow separation and water ring lubrication resistance reducing device according to claim 1, wherein the ratio of the groove depth of the spiral flow channel of the liquid inlet spiral pipe section (2) to the outer diameter of the spiral outer pipe (4) is 0.15-0.2.
7. The axial-flow type rotational flow separation and water ring lubrication resistance reducing device according to claim 1, wherein the rotational flow section comprises a first rotational flow cavity (5) and a second rotational flow cavity (8) which are coaxial, the first rotational flow cavity (5) and the second rotational flow cavity (8) are both of a reducing barreled structure, and the taper of the first rotational flow cavity (5) is smaller than that of the second rotational flow cavity (8).
8. An axial-flow cyclonic separating and water-ring lubrication fairing according to claim 7, characterised in that the conicity of the second cyclonic chamber (8) is not greater than 3 °.
9. The axial-flow type rotational flow separation and water ring lubrication resistance reducing device according to claim 1, wherein the inlet end of the divergent structure of the inner pipe wall (14) reversely extends from the bottom of the second rotational flow cavity (8) to the cavity to form an oil phase overflow pipe section (13), and the ratio of the diameter of the end overflow port (12) of the overflow pipe section (13) to the diameter of the bottom of the second rotational flow cavity (8) is 0.5-0.8.
10. An axial-flow cyclonic separating and water-ring lubrication fairing according to claim 9, characterised in that the ratio of the length of the overflow pipe section (13) to the height of the second cyclonic chamber (8) is not more than 0.4.
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| CN202011635738.7A CN112844881B (en) | 2020-12-31 | 2020-12-31 | Axial-flow type cyclone separation and water ring lubricating and resistance reducing device |
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| CN202011635738.7A CN112844881B (en) | 2020-12-31 | 2020-12-31 | Axial-flow type cyclone separation and water ring lubricating and resistance reducing device |
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| CN112844881B CN112844881B (en) | 2022-10-25 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115142833A (en) * | 2022-07-22 | 2022-10-04 | 中国科学院力学研究所 | Underground double-vortex type rotational flow oil-water separator |
| CN115634517A (en) * | 2021-07-20 | 2023-01-24 | 中国石油天然气股份有限公司 | Multiphase separation device |
| CN116398095A (en) * | 2023-06-08 | 2023-07-07 | 陕西思越石油装备制造工程有限公司 | Ground vortex drainage device |
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| CN206247037U (en) * | 2016-10-26 | 2017-06-13 | 中国石油大学(华东) | Spiral flow pendular ring moisture film collaborates device |
| CN206753550U (en) * | 2017-05-12 | 2017-12-15 | 西南石油大学 | A kind of oil field industrial water ring generating apparatus |
| CN208396696U (en) * | 2018-05-09 | 2019-01-18 | 中国海洋石油集团有限公司 | It is a kind of to mix the defeated device of dilute collection for viscous crude Produced Liquid |
| CN112049613A (en) * | 2020-09-22 | 2020-12-08 | 西南石油大学 | Lubricating element for drag reduction in mining and transportation of thick oil containing water in shaft |
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| CN115634517A (en) * | 2021-07-20 | 2023-01-24 | 中国石油天然气股份有限公司 | Multiphase separation device |
| CN115142833A (en) * | 2022-07-22 | 2022-10-04 | 中国科学院力学研究所 | Underground double-vortex type rotational flow oil-water separator |
| CN115142833B (en) * | 2022-07-22 | 2023-01-10 | 中国科学院力学研究所 | Underground double-vortex type rotational flow oil-water separator |
| CN116398095A (en) * | 2023-06-08 | 2023-07-07 | 陕西思越石油装备制造工程有限公司 | Ground vortex drainage device |
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