CN205782015U - A kind of double-screw mixing transmission pump return-flow system - Google Patents
A kind of double-screw mixing transmission pump return-flow system Download PDFInfo
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- CN205782015U CN205782015U CN201620657337.4U CN201620657337U CN205782015U CN 205782015 U CN205782015 U CN 205782015U CN 201620657337 U CN201620657337 U CN 201620657337U CN 205782015 U CN205782015 U CN 205782015U
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- pump
- mixing
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- return
- pipeline
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Abstract
This utility model provides a kind of double-screw mixing transmission pump return-flow system, including coming liquid pipeline, filter, mixing pump, motor, return tank, backflow gate, circulating reflux pipeline and drain pipe road.According to double-screw mixing transmission pump return-flow system described in the utility model, it is possible to increase pump efficiency and volumetric efficiency, improve the ability carrying high void fraction multiphase mixture medium.
Description
Technical field
This utility model relates to return-flow system, particularly to a kind of double-screw mixing transmission pump return-flow system.
Background technology
Oil field by land, mixing pump is used for old filed.Old filed development late stage water content increases, and wellhead back pressure raises,
Well head collector tubing reduces because of reason bearing capacities such as corrosion, causes the frequent perforation of pipeline.Owing to corrosive pipeline is generally to deposit
Problem, according to building new pipeline, then output investment ratio is bigger；Use traditional block station to carry out gas-liquid and divide defeated, then invest big, work
Phase is long.And apply mixing pump can solve these problems in producing, and small investment, easy for installation.It addition, the newly-built production capacity of part
The exploitation of block, owing to, away from system of subject comparison between projects, relying on the pressure of oil well can not meet oil field production requirement, so also
There is pressure-increasing unit problem.For reducing construction investment, typically it is also adopted by mixing pump as pressurized measure.
Utility model content
The purpose of this utility model is the demand for prior art, proposes a kind of double-screw mixing transmission pump return-flow system,
Pump efficiency and volumetric efficiency can be improved, improve the ability carrying high void fraction multiphase mixture medium.
For achieving the above object, the following technical scheme of this utility model offer:
A kind of double-screw mixing transmission pump return-flow system, including: come liquid pipeline, filter, mixing pump, motor, return tank, backflow
Gate, circulating reflux pipeline and drain pipe road.
Further, wherein, carrying out liquid pipeline and connect filter, filter two ends are respectively provided with gate.
Further, filter connects mixing pump by the road, and mixing pump is driven by motor.
Further, mixing pump connects return tank by the road.
Further, on the one hand return tank connects backflow gate by the road, and backflow lock is connected to the defeated of mixing pump by the road
Enter pipeline；On the other hand return tank connects drain pipe road, by outer for liquid defeated.
Accompanying drawing explanation
Fig. 1 is double-screw mixing transmission pump return-flow system schematic diagram of the present utility model.
(note: the shown structure in accompanying drawing, simply to illustrate that the signal of this utility model feature, is not intended to according to attached
Structure shown in figure.)
Detailed description of the invention
As it is shown in figure 1, according to double-screw mixing transmission pump return-flow system described in the utility model, including: come liquid pipeline, filtration
Device 1, mixing pump 2, motor 3, return tank 4, backflow gate 5, circulating reflux pipeline and drain pipe road.
Wherein, carrying out liquid pipeline and connect filter 1, filter 1 two ends are respectively provided with gate.
Connecing mixing pump 2 through pipeline after filter 1, wherein mixing pump 2 has motor 3.
Mixing pump 2 connects return tank 4 by the road, and on the one hand return tank 4 connects backflow gate 5 by the road, and reflux gate 5 warp
Pipeline is connected to the intake line of mixing pump 2；On the other hand return tank 4 connects drain pipe road, by outer for liquid defeated.
Further, the pipeline between mixing pump 2 and return tank 4 is also equipped with gate.
After mixing pump is applied at the scene, primarily serve the effect of following several respects.
(1) wellhead back pressure is reduced.After using mixing pump, pipeline back pressure typically declines 0.5～0.6MPa, individual block back pressure
Decline 2.3MPa.
(2) oil-gathering radius is expanded.Typically can expand oil-gathering radius 3～5km, maximum collection defeated radius about 15km, solve
The oil pipeline transportation problem of outlying block and scattered well.
(3) oil and gas production is increased.Owing to wellhead back pressure declines, decrease shaft bottom pump leakage amount so that the liquid measure of production
With oil mass increase, amplification many up to more than 10%.Becoming automobile draws oil for pipeline conveying, it is to avoid natural gas vent, adds
The recovery utilization rate of natural gas.
(4) construction investment and operating cost are reduced.The oil gas carrying out mixing pump pressure ratio traditional divides defeated block station engineering
Link is few, can reduce investment outlay.Reduce back pressure and can reduce pipe perforation number of times, decrease maintenance cost.
(5) production management is facilitated.Wellhead back pressure reduces, and decreases the maintenance load of oil well pump；Pipeline performance pressure drop
Low, decrease the quantities of conduit wiring piercing number of times and maintenance；Realize oil and gas multiphase flow, decrease the pipeline that anthropic factor causes and break
Bad；Mixing pump station flow process is simple, reliable, uses the way patrolled and examined can meet production requirement, decreases management personnel.
Little for the pumpage of well head and measuring station, typically more with single-screw (single screw) pump；And it is arranged on the mixing pump of block station
Discharge capacity is big, based on Quimby pump.
But the most also encounter problem below:
In actual applications, the mixing pump use condition in oil field is more complicated, and medium belongs to oil, gas and water, sand, paraffin
Deng multi-phase mixed delivering.Although a series of technical work has been done in the development of technology for mixing pump own: (1) screw rod multiphase pump
Design problem.(2) screw rod multiphase pump molded lines of rotor research.Molded line problem is the key technology in mixing pump, the design of molded line
It is related to the efficiency of pump, stability, the balance of rotor and multiphase pump and can meet the series of problems such as mixed defeated needs.This will rooting
According to parameter designing molded lines of rotor such as flow, void fraction and lifts, and study the dynamics problem of variable working condition lower rotor part, solve the pump housing
Unbalance stress, vibrate, impact, the fluctuation of service factor such as overheated, overvoltage.(3) seal, lubricate, cool down and the supporting skill of random
The research of art.Wherein potted component should meet the use requirement to gas, can meet the use requirement to liquid again, this
It is the most all technological difficulties.
Although solving a part of problem, but, for gas fluid mixture pump, void fraction is to affect the boosting capability of pump, effect
Rate and the isoparametric key factor of flow.Owing to being affected by on-the-spot various factors, the operation of the new well of the high gassiness of such as part,
Exploitation new technology (injecting CO 2), yield and production need the factors such as the conveying to gas, can propose the gas transport properties of mixing pump
Higher requirement.
Part mixing pump test result is shown: one is that void fraction is the lowest, and the supercharging to pump is the most favourable.Void fraction is 60%
Hereinafter, each tested pump testing all has preferable boosting capability.This ability is on a declining curve with the increase of air content, void fraction to 80%
Above, boosting capability declines rapidly；Two be void fraction below 80% time, the void fraction of pump increases, and the flow of pump maintains substantially
Constant or be increased slightly；When void fraction is more than 80%, with the increase of void fraction, flow declines rapidly；Three is the increasing with void fraction
Adding, pump efficiency is on a declining curve.Void fraction is when 20%, and pump efficiency is more than 60%；During void fraction 60%, the fall of pump efficiency is not
Greatly；When void fraction is to 80%, pump efficiency drops to about 30%；After void fraction is more than 80%, with the increase of void fraction, reduction of speed under pump efficiency
Degree is faster.
In order to change the present situation of the difficulty of transportation of the high medium of void fraction, we have done Curve guide impeller in flow process and have added
Mixing pump reflux (see schematic diagram), structure includes: reflux pipeline, backflow regulating gate, return tank three part, by controlling
Backflow gate controls the flow of withdrawing fluid.
Mixing pump reflux principle: the production scene that the medium tolerance at double-screw mixing transmission pump is more than more than 90%, for
Meet produced on-site needs, in mixing pump outlet, return tank is installed, the part liquid measure that mixing pump exports is returned by reflux process
Return the import of mixing pump, primarily serve the effect of following several respects:
(1) ensure there is liquid all the time inside mixing pump, reduce void fraction, improve pump efficiency and volumetric efficiency, improve conveying height
The ability of void fraction multiphase mixture medium.
(2) prevent mixing pump (single screw rod) from evacuating, elastomer stator and the dry grinding of rustless steel rotor, cause stator to lack liquid
Lubrication, and the too high phenomenon burning degumming of temperature rise.
The above, preferred embodiment the most of the present utility model, it is not intended to limit protection of the present utility model
Scope, all any amendment, equivalent and improvement etc. made within spirit of the present utility model and principle, should be included in
Within protection domain of the present utility model.
Claims (2)
1. a double-screw mixing transmission pump return-flow system, it is characterised in that:
Including coming liquid pipeline, filter (1), mixing pump (2), motor (3), return tank (4), backflow gate (5), looping back flow tube
Road and drain pipe road；
Wherein, carrying out liquid pipeline and connect filter (1), filter (1) two ends are respectively provided with gate；
Filter (1) connects mixing pump (2) by the road, and mixing pump (2) is driven by motor (3)；
Mixing pump (2) connects return tank (4) by the road；
On the one hand return tank (4) connects backflow gate (5) by the road, and backflow gate (5) is connected to the defeated of mixing pump (2) by the road
Enter pipeline；On the other hand return tank (4) connects drain pipe road, by outer for liquid defeated.
Double-screw mixing transmission pump return-flow system the most according to claim 1, it is characterised in that:
It is also equipped with gate on pipeline between mixing pump (2) and return tank (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620657337.4U CN205782015U (en) | 2016-06-28 | 2016-06-28 | A kind of double-screw mixing transmission pump return-flow system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620657337.4U CN205782015U (en) | 2016-06-28 | 2016-06-28 | A kind of double-screw mixing transmission pump return-flow system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205782015U true CN205782015U (en) | 2016-12-07 |
Family
ID=58128532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620657337.4U Expired - Fee Related CN205782015U (en) | 2016-06-28 | 2016-06-28 | A kind of double-screw mixing transmission pump return-flow system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205782015U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114876453A (en) * | 2022-05-05 | 2022-08-09 | 西南石油大学 | Oil-gas-sand multiphase pump experiment system capable of automatically adjusting medium components and parameters |
-
2016
- 2016-06-28 CN CN201620657337.4U patent/CN205782015U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114876453A (en) * | 2022-05-05 | 2022-08-09 | 西南石油大学 | Oil-gas-sand multiphase pump experiment system capable of automatically adjusting medium components and parameters |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20170628 |