CN114427549A - Wedge wave annular flow generator - Google Patents
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- CN114427549A CN114427549A CN202210103521.4A CN202210103521A CN114427549A CN 114427549 A CN114427549 A CN 114427549A CN 202210103521 A CN202210103521 A CN 202210103521A CN 114427549 A CN114427549 A CN 114427549A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 151
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 73
- 239000012071 phase Substances 0.000 description 30
- 230000032258 transport Effects 0.000 description 19
- 230000000694 effects Effects 0.000 description 6
- 239000008346 aqueous phase Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 241000282414 Homo sapiens Species 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/02—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid
- F04F5/10—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid displacing liquids, e.g. containing solids, or liquids and elastic fluids
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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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
- F04F5/48—Control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/16—Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity
- F17D1/17—Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity by mixing with another liquid, i.e. diluting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/20—Arrangements or systems of devices for influencing or altering dynamic characteristics of the systems, e.g. for damping pulsations caused by opening or closing of valves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a wedge-shaped wave annular flow generator, which comprises an annular flow conveying pipeline, an oil inlet pipeline, an annular flow water inlet pipeline and a wedge-shaped wave generating device, wherein the oil inlet pipeline and the annular flow conveying pipeline are coaxially arranged and are communicated with each other; the axis of the annular inflow water inlet pipeline is vertical to and communicated with the axis of the annular flow conveying pipeline; the wedge-shaped wave generating device comprises a pressing plate arranged at the tail end of the oil inlet pipeline and an impact water inlet pipeline arranged on the outer wall of the annular flow conveying pipeline; wherein the axis of the impact water inlet pipeline is vertical to the axis of the annular flow conveying pipeline; the pressing plate controls whether water flow enters or not through the impact water inlet pipeline to move downwards and reset. The invention can make the water phase generate pressure opposite to the buoyancy direction caused by density difference in the running process, and make the oil-water to be destabilized flow back circularly, thereby improving the stable conveying distance of the thick oil and improving the conveying efficiency of the thick oil.
Description
Technical Field
The invention relates to an oil-water annular flow conveying device, in particular to a wedge-shaped wave annular flow generator.
Background
With the increasing speed of civilized development of human beings, the rate of petroleum resources on land being consumed is also increasing, and the ever-increasing problem of petroleum resources makes the eyes of human beings to be directed to marine petroleum resources.
However, since the marine thick oil resource has the characteristics of high density and high viscosity, the thick oil is easy to adhere in the pipeline due to the characteristics of the thick oil in the transportation process. To overcome the defects, researchers at home and abroad propose a plurality of modes for transporting thick oil, such as a heating method, an emulsifying method and a diluting method, but the methods have respective defects, such as overlarge energy consumption, change of thick oil components and the like; the method of transporting the thick oil wrapped by the water ring can greatly reduce the friction resistance between the thick oil and the pipe wall; therefore, at present, thick oil transportation is often realized by adopting a water ring transportation method, for example, the invention patent application with the application publication number of CN112253063A discloses a "ring flow generator", which transports thick oil by adopting a way of wrapping oil phase with water phase, so as to reduce the transportation resistance of thick oil and improve the transportation efficiency of thick oil; and the utility model patent with application publication number CN205628330U authorizes "an annular flow nozzle", the nozzle also adopts similar method to transport the thick oil, and the invention patent application with application publication number CN113236202A discloses "a pulsating wave annular flow generator", the pulsating wave annular flow generator has the advantages of being able to generate certain pulsating wave shape to the oil phase and then to balance the oil-water annular flow which is unstable, so as to prolong the stable transportation length of the thick oil.
However, the above-described annular flow generator also has drawbacks: because there is the density difference between water and the viscous crude, consequently along with the continuous extension of transport distance, the eccentric condition of annular flow meeting is more obvious, viscous crude is because the effect compression aqueous phase of buoyancy promptly, if can not exert external force and alleviate its eccentric degree, viscous crude can continuously extrude the aqueous phase, when the aqueous phase was compressed completely, viscous crude then can break away from the aqueous phase parcel, and with the pipeline inner wall contact of carrying the annular flow, and the adhesion is on this pipeline inner wall, make the annular flow of profit complete unstability, thereby lead to the transport pipeline internal pressure to descend rapidly, finally cause the efficiency of viscous crude transportation to reduce by a wide margin. In the above two patents CN112253063A and CN205628330U, the water phase forming the annular flow can only reduce the possibility of vortex when the water phase and the oil phase are combined by the action of the pipe wall perpendicular to the axis of the water inlet pipe at the beginning of entering the pipe to achieve the purpose of improving the stability of the annular flow, but when the water phase and the oil are combined and then flow through the middle of the annular flow transportation pipe, the problem that a certain acting force cannot be applied to the water phase to make the annular flow eccentrically flow is solved, that is, the recovery and stabilization of the eccentric annular flow cannot be achieved by the member of the annular flow generator; in the above CN113236202A patent, "a pulsating wave annular flow generator", compared with CN112253063A and CN205628330U patents, the possibility of applying an acting force to one of two phases of the annular flow in the annular flow transportation pipeline is realized, and a motion rule opposite to a instability change rule is applied to the annular flow according to an instability position of the annular flow, so as to input an oil phase in a direction opposite to that of the existing oil phase.
In order to solve the above problems, a generator capable of extending stable transportation of an oil-water annular flow is required to improve the transportation efficiency of the thick oil.
Disclosure of Invention
The invention aims to overcome the defects of the existing annular flow generator and provides a wedge-shaped wave annular flow generator which generates a periodic wedge-shaped convergence shape on the upper half part of oil-water annular flow in a pipeline by controlling whether water enters an impact water inlet pipeline or not according to the principle of a fluid dynamic pressure lubricating oil film, and is different from the prior art that the stability of the annular flow cannot be interfered or only a single phase is interfered.
The technical scheme for solving the technical problems is as follows:
a wedge wave annular flow generator is used in an annular flow conveying pipeline for conveying thick oil, and is characterized by comprising an oil inlet pipeline arranged in the annular flow conveying pipeline, an annular flow water inlet pipeline arranged on the outer wall of the annular flow conveying pipeline and a wedge wave generating device, wherein the oil inlet pipeline and the annular flow conveying pipeline are coaxially arranged and are communicated with each other; the axis of the annular inflow water inlet pipeline is vertical to the axis of the annular flow conveying pipeline and is communicated with the annular flow conveying pipeline; the wedge-shaped wave generating device comprises a pressing plate arranged at the tail end of the oil inlet pipeline and an impact water inlet pipeline arranged on the outer wall of the annular flow conveying pipeline; wherein the axis of the impact water inlet pipeline is vertical to the axis of the annular flow conveying pipeline; the pressing plate controls whether water flow enters or not through the impact water inlet pipeline to move downwards and reset.
Preferably, the oil inlet pipeline, the annular flow conveying pipeline which is coaxially arranged, the annular flow water inlet pipeline and the impact water inlet pipeline are both provided with flanges.
Preferably, the flange arranged on the oil inlet pipeline comprises a first flange arranged on the inlet end of the oil inlet pipeline and a second flange arranged between the inlet end and the outlet end of the oil inlet pipeline. The flange of the annular flow transport pipe comprises a third flange at the inlet end of the annular flow transport pipe and a fourth flange at the outlet end of the annular flow transport pipe. The oil inlet pipeline and the annular flow conveying pipeline are connected through a flange.
Preferably, the annular inflow water inlet pipes are arranged in multiple groups, the multiple groups of annular inflow water inlet pipes are arranged in an equal angle along the 270-degree direction of the circumference of the annular flow conveying pipeline, and each annular inflow water inlet pipe is communicated with the annular flow conveying pipeline.
Preferably, the distance between the outer wall of the outlet end of the oil inlet pipeline and the inner wall of the annular flow conveying pipeline is 10-15 mm.
Preferably, the impact water inlet pipeline is a single group, the impact water inlet pipeline and the annular flow water inlet pipeline are circumferentially and uniformly distributed at the view angle of the end surface direction, and the impact water inlet pipeline is communicated with the annular flow transport pipeline.
Preferably, the inlet ends of the annular inflow water inlet pipe and the impact water inlet pipe are provided with flanges.
Preferably, the pressure plate is the same as the inner diameter and the outer diameter of the oil inlet pipeline, and is arranged at the upper part of the tail end of the oil inlet pipeline in a shaft-matching mode through a hole.
Compared with the prior art, the invention has the following beneficial effects:
1. the wedge-shaped wave annular flow generator can enable the water phase which is introduced by the water inlet pipeline and is not combined with the thick oil introduced by the oil inlet pipeline to generate a wedge shape, so that a corresponding wedge-shaped convergence space is generated on the upper part of a water ring forming the oil-water annular flow, when the water introduced by the water inlet pipeline flows through the wedge-shaped convergence space, pressure opposite to the buoyancy direction caused by density difference can be generated, and the problem of the eccentric flow of the annular flow is solved to a certain extent, so that the transportation efficiency of the thick oil is improved.
2. The wedge-shaped wave annular flow generator can generate certain pressure on the generated oil-water annular flow through the wedge-shaped wave generating device, when the generated oil-water annular flow is about to be unstable, the electromagnetic valve connected with the impact water inlet pipeline through the flange is closed, the impact water inlet pipeline stops water inlet, and the pressing plate of the wedge-shaped wave generating device is reset, so that a wedge-shaped convergence shape is generated on the inner wall of the transportation pipeline of the water phase and the annular flow, when the water phase flows through the wedge-shaped convergence space, certain pressure can be generated, buoyancy generated by the density difference between the water phase and the thick oil is neutralized, the eccentrically flowing oil-water annular flow tends to be stable again, and the thick oil transportation effect is ensured.
Drawings
Fig. 1 and fig. 2 are schematic perspective views of specific embodiments of a wedge-shaped wave ring-shaped flow generator provided in example 1 of the present invention.
Fig. 3 is a schematic perspective view (cross-sectional view) of a wedge-shaped wave ring-shaped flow generator provided in embodiment 1 of the present invention.
FIG. 4 is a schematic view of the default initial position of the wedge wave generator (impact water inlet conduit to stop water supply).
FIG. 5 is a schematic view of the wedge wave generator in the pressing position (impacting the water inlet conduit to provide water supply).
FIG. 6 is a schematic diagram of the water ring effect generated by the wedge wave generator.
FIG. 7 is a schematic diagram of the wedge effect mechanism.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited thereto.
Example 1
Referring to fig. 1 to 3, the wedge wave annular flow generator of the present invention includes an oil inlet pipe 1, an annular flow water inlet pipe 2, an annular flow transport pipe 3, an impact water inlet pipe 5, and a wedge wave generating means for restoring an eccentric annular flow.
Referring to fig. 1 to 3, the oil inlet pipe 1 is provided with an oil inlet pipe first flange 6 and an oil inlet pipe second flange 7, wherein the oil inlet pipe first flange 6 is used for connecting with the front pipe body, and the oil inlet pipe second flange 7 is used for connecting with the annular flow transport pipe 3. The inlet end of the annular flow transport pipeline 3 is provided with a third flange 8 for matching with the second flange 7 to realize the interconnection of the oil inlet pipeline 1 and the annular flow transport pipeline 3. The outlet end of the annular flow transport pipe 3 is provided with a fourth flange 9 for connection with a rear pipe body. In addition, the inlet end of the annular inflow water inlet pipeline is provided with a flange 10, and the inlet end of the impact water inlet pipeline is also provided with a flange, so that the opening and closing of the annular inflow water inlet pipeline 2 or the impact water inlet pipeline 5 are conveniently controlled. The inlet end of the impact water inlet pipeline 5 is also provided with an electromagnetic valve, and an oil-water annular flow eccentric sensor can be arranged in the annular flow conveying pipeline 3 and used for automatically controlling whether water flow impacting the water inlet pipeline 5 flows in or not.
Referring to fig. 1-3, the oil inlet pipe 1 and the annular flow transport pipe 3 are coaxially arranged and are communicated with each other; the annular inflow water inlet pipe 2 is arranged on the outer wall of the annular flow transportation pipeline 3 and is communicated with the annular flow transportation pipeline 3. The annular inflow water inlet pipeline 2 can be a plurality of groups, the annular inflow water inlet pipelines 2 of the plurality of groups are arranged in the circumferential 180-degree direction of the annular flow conveying pipeline at equal angles, three groups of annular inflow water inlet pipelines 2 are arranged in the embodiment, the annular inflow water inlet pipelines are sequentially arranged between the first group and the second group at 90 degrees, the annular inflow water inlet pipelines are arranged between the second group and the third group at 90 degrees, the third group and the first group are spaced at 180 degrees, and the third group and the first group are arranged to form an impact water inlet pipeline 5. Each annular inflow water inlet pipe 2 is communicated with the annular flow conveying pipeline 3 and is used for inputting an annular flow water phase into the annular flow conveying pipeline 3.
Referring to fig. 1 to 5, the wedge-shaped wave generating device comprises an impact water inlet pipe 5 and a pressing plate 41 arranged at the tail end of the oil inlet pipe 1 and used for generating a wedge-shaped water phase of the annular flow, wherein the impact water inlet pipe 5 is arranged on the outer wall of the annular flow conveying pipe 3 and is communicated with the annular flow conveying pipe 3, the pressing plate 41 of the impact water inlet pipe 5 is in a circular arc shape, the inner diameter and the outer diameter of the circular arc are consistent with those of the oil inlet pipe 1, and the pressing plate can be ensured to be attached to the oil inlet pipe 1 when pressed down, so that a vortex can not be generated on the water phase and the thick oil; wherein, the pressing plate 41 is positioned by matching hole shafts; the hole shaft is matched with the pressure plate to control the pressure plate to be pressed down and reset in a damping hole mode.
Referring to fig. 1 to 5, a pressing plate 41 of the wedge-shaped wave generating device determines an initial position through a damping hole, when an electromagnetic valve connected to the impact water inlet pipe 5 is closed, the impact water inlet pipe 5 stops water inflow, the pressing plate is not affected by an external force, i.e., in a raised state, and can generate a wedge-shaped shape 42 for water introduced into the annular inflow water inlet pipe 2; when the electromagnetic valve is opened, the impact water inlet pipeline 5 starts to feed water, the pressing plate 41 is pressed down under the impact of water flow, the outer wall of the pressing plate 41 is attached to the outer wall of the oil inlet pipeline 1, water introduced into the annular flow water inlet pipeline 2 cannot be wedged, and the impact water inlet pipeline 5 can undertake the task of introducing the annular flow water phase. Alternatively, the pressure plate 41 may be directly controlled by an electromagnetic valve to be in a lifted state or a state of being attached to the outlet of the oil inlet pipe 1, and in the lifted state, the pressure plate may generate the wedge shape 42 for the water introduced into the annular inflow water inlet pipe 2.
Referring to fig. 1 to 5, the axes of the impact water inlet pipe 5 and the annular flow transport pipe 3 are perpendicular to each other, the impact water inlet pipe 5 is a single group, the impact water inlet pipe 5 and the annular flow water inlet pipe 2 are circumferentially and uniformly distributed in an end surface direction view, and the impact water inlet pipe 5 is communicated with the annular flow transport pipe 3.
The distance between the outer wall of the outlet end of the oil inlet pipeline and the inner wall of the annular flow transportation pipeline is 10mm-15mm, in the embodiment, the distance between the outer wall of the oil inlet pipeline 1 and the inner wall of the annular flow transportation pipeline 3 is 12mm, namely the thickness of water entering from the annular flow water inlet pipeline 2 before being combined with thick oil into annular flow is 12 mm.
Referring to fig. 1 to 5, the end of the oil inlet pipe 1 extends into the annular flow transport pipe 3, and the outlet of the oil inlet pipe 1 is located slightly farther from the outlet of the annular flow water inlet pipe 2 and the impact water inlet pipe 5, that is, as shown in fig. 4, the outlet of the oil inlet pipe 1 is located at the rightmost side, the outlet of the annular flow water inlet pipe 2 is located at the leftmost side, and the outlet of the impact water inlet pipe 5 is located closer to the outlet of the oil inlet pipe 1 but slightly at the left side, so that it is ensured that the water delivered from the annular flow water inlet pipe 2 and the impact water inlet pipe 5 does not directly contact with the thick oil or generate vortex flow, and the stability of the annular flow can be ensured; in addition, the arrangement can ensure that the thickened oil conveyed from the oil inlet pipeline 1 can form oil-water annular flow with the annular flow water inlet pipeline 2 and the water conveyed from the impact water inlet pipeline 5 in the annular flow conveying pipeline 3.
Referring to fig. 1-7, the working principle of the present invention is as follows:
when the device works, the oil inlet pipeline 1 conveys thick oil into the annular flow conveying pipeline 3, the annular flow water inlet pipeline 2 conveys water into the annular flow conveying pipeline 3, and the water entering the annular flow conveying pipeline 3 is used as a water ring to wrap the thick oil to form oil-water annular flow which is conveyed in the annular flow conveying pipeline 3.
At the beginning of the transportation, the oil-water annular flow is not eccentric, so that the electromagnetic valve connected with the impact water inlet pipeline 5 is opened, namely the annular flow water inlet pipeline 2 and the impact water inlet pipeline 5 are both in a water supply state at the moment, and a condition is provided for the combination of the annular flow; when the oil-water annular flow is in an eccentric unstable state, the electromagnetic valve connected with the impact water inlet pipeline 5 is closed, the impact water inlet pipeline 5 stops supplying water, the pressing plate 41 in the wedge-shaped wave generating device loses the external force effect and resets, so that the wedge-shaped shape is formed on the upper half part of the water phase in the annular flow conveying pipeline 3, a wedge-shaped convergence space is formed by combining the effects of the inner wall of the annular flow conveying pipeline 3 and the oil phase surface OS, when the water phase flows through the wedge-shaped convergence space, the eccentric unstable condition of the annular flow is recovered due to the generation of the acting force opposite to the eccentric unstable motion of the annular flow, the stable conveying distance of the annular flow is prolonged, and the thick oil conveying efficiency is improved.
The principle of the invention refers to the dynamic pressure oil film mechanism of the sliding bearing, so the pressure of the wedge-shaped wave water phase refers to the total bearing capacity F of the oil film of the sliding bearingyCalculation equations (1) to (3) are calculated:
wherein eta is dynamic viscosity, N.s/m2The dynamic viscosity of the water phase is selected;
b is the width of the bearing, and the length of a pressure plate in the wedge-shaped wave generating device is selected;
d is the inner diameter of the annular flow transport pipe 3;
v is the water flow rate;
d is the outer diameter of the oil inlet pipeline 1;
Cpin terms of the ratio of the width to the diameter for the coefficient of the load
The calculation result of (2) is combined with the initial default position of the pressure plate and the eccentricity to select the bearing capacity coefficient CpIs 1.070;
is calculated to obtain
Fy＝0.00023N.
And the buoyancy difference caused by the density difference is calculated by the formula
Ff＝V(ρw-ρo)g； (4)
V＝π(R-r)2； (5)
Where ρ iswIs the density of water, poIs the density of the oil, V is the displacement volume, R is the radius of the water phase, and R is the radius of the oil phase;
the force of upward movement of the oil phase is calculated according to the above equations (4) to (5) as
Ff＝0.0001232N.
In summary, the pressure F generated by the water phase in the wedge-shaped convergent space generated by the wedge-shaped wave generator and the inner wall 31 of the annular flow transport pipeyCan resist buoyancy difference F caused by density difference between thick oil and water phasefThereby effectively solving the problem of the eccentric flow of the annular flow.
The above description is a preferred embodiment of the present invention, but the present invention is not limited to the above description, and any other changes, modifications, substitutions, blocks and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and they are included in the scope of the present invention.
Claims (10)
1. A wedge wave annular flow generator is used in an annular flow conveying pipeline for conveying thick oil, and is characterized by comprising an oil inlet pipeline arranged in the annular flow conveying pipeline, an annular flow water inlet pipeline arranged on the outer wall of the annular flow conveying pipeline and a wedge wave generating device, wherein the oil inlet pipeline and the annular flow conveying pipeline are coaxially arranged and are communicated with each other; the axis of the annular inflow water inlet pipeline is vertical to the axis of the annular flow conveying pipeline and is communicated with the annular flow conveying pipeline;
the wedge-shaped wave generating device comprises a pressing plate arranged at the tail end of the oil inlet pipeline and an impact water inlet pipeline arranged on the outer wall of the annular flow conveying pipeline; wherein the axis of the impact water inlet pipeline is vertical to the axis of the annular flow conveying pipeline; the pressing plate controls whether water flow enters or not through the impact water inlet pipeline to move downwards and reset.
2. The wedge wave annular flow generator of claim 1 wherein said oil inlet pipe and coaxially disposed annular flow transport pipe and said annular flow water inlet pipe and said impingement water inlet pipe are each provided with a flange.
3. The wedge wave annular flow generator according to claim 2 wherein the oil inlet pipe disposed flange comprises a first flange at the inlet end of the oil inlet pipe and a second flange disposed between the inlet end and the outlet end of the oil inlet pipe.
4. The wedge wave ring flow generator of claim 3 wherein said annular flow transport duct disposed flange comprises a third flange at said annular flow transport duct inlet end and a fourth flange disposed at said annular flow transport duct outlet end.
5. The wedge wave annular flow generator of claim 4 wherein said oil inlet pipe and said annular flow transport pipe are flanged.
6. The wedge wave annular flow generator of claim 2 wherein said annular inflow conduits are in a plurality of sets, the plurality of sets being equiangularly arranged along 270 degrees of the circumference of said annular flow transport conduit, each of the annular inflow conduits being in communication with said annular flow transport conduit.
7. The wedge wave annular flow generator according to claim 2, wherein the distance between the outer wall of the outlet end of the oil inlet pipe and the inner wall of the annular flow transport pipe is 10mm to 15 mm.
8. The wedge wave annular flow generator according to claim 1, wherein the impact water inlet conduits are a single group, the impact water inlet conduits and the annular flow water inlet conduits are circumferentially evenly distributed in a view of an end surface direction, and the impact water inlet conduits are communicated with the annular flow transport conduits.
9. The wedge wave annular flow generator according to any of claims 1 to 8 wherein said annular inflow conduit and said impingement inlet conduit inlet end are provided with flanges.
10. The wedge wave annular flow generator according to claims 1 to 8, wherein said pressure plate is formed in the same inner and outer diameters of said oil inlet pipe and is fitted through a hole shaft at an upper portion of a distal end of said oil inlet pipe.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116717725A (en) * | 2023-05-29 | 2023-09-08 | 广东工业大学 | Sea surface oil pipeline |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116717725A (en) * | 2023-05-29 | 2023-09-08 | 广东工业大学 | Sea surface oil pipeline |
| CN116717725B (en) * | 2023-05-29 | 2024-02-20 | 广东工业大学 | Sea surface oil pipeline |
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| CN114427549B (en) | 2023-11-14 |
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