CN203453031U - Thickened oil blockage prevention device of electric submersible pump protector - Google Patents
Thickened oil blockage prevention device of electric submersible pump protector Download PDFInfo
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- CN203453031U CN203453031U CN201320499649.3U CN201320499649U CN203453031U CN 203453031 U CN203453031 U CN 203453031U CN 201320499649 U CN201320499649 U CN 201320499649U CN 203453031 U CN203453031 U CN 203453031U
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- thickened oil
- protector
- sieve plate
- upper connection
- axle
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Abstract
The utility model relates to a thickened oil blockage prevention device of an electric submersible pump protector, aiming at overcoming the defects that a breathing hole of the protector is blocked by a thickened oil block when an electric submersible pump is used for producing thickened oil, so that a submersible motor is damaged, and the production can not be carried out normally. The thickened oil blockage prevention device is provided with a shaft arranged in an inner cavity of an upper joint; a stirring wheel and a sieve plate assembly are fixedly arranged on the shaft from top to bottom; the upper joint is provided with two radial through holes which are arranged above the stirring wheel; each radial through hole is internally and fixedly provided with a liquid outlet check valve and a liquid inlet check valve; a sieve plate of the sieve plate assembly is fixedly arranged on the end surface of a fixed sleeve by screws; the sieve plate is in a circular plate shape and is provided with axial sieve meshes. The thickened oil blockage prevention device of the electric submersible pump protector has the beneficial effects that the device is reasonable in structure; the thickened oil blockage prevention capability of the electric submersible pump protector can be improved, the thickened oil blockage to the breathing hole of the protector can be reduced or avoided, the service life of the protector is prolonged, the thickened oil blockage prevention device can be better applied to the extraction of a thickened oil well, a super-thickened oil well and an extra-thickened oil well, and the service life of an electric submersible pump unit can be further prolonged.
Description
Technical field
The utility model relates to a kind of oil and gas development pumping unit submersible electric pump protector, especially relates to a kind of submersible electric pump protector viscous crude anti-block device.
Background technique
Submersible electric pump down-hole unit is mainly from top to bottom connected to form by multistage centrifugal pump, deaerator, protector, oil-submersible motor, between its housing and housing, with flange screw, is connected, and between its axle and axle, with spline housing, is connected.
The effect of protector is, the loss of lubricant oil in small electromotor, and play balance motor external and internal pressure, prevent that well liquid from entering the axial load of motor and bearing pump.The main Types of protector has three kinds of communication type, precipitating type and capsule-types etc.The advantage of capsule-type protector: with capsule barrier wells liquid and dynamo oil, as long as capsule portion is damaged, well liquid just can not enter motor; Thrust bearing is arranged on bottom, can prevent entering of well liquid, ensures good lubricating, and extends the working life of thrust bearing; Rely on capsule to realize the respiration of expanding with heat and contract with cold of dynamo oil, reduce the wastage of lubricant oil.The capsule chamber on capsule-type protector top is provided with capsule, and bottom is mud chamber.The housing upper end of capsule chamber is installed with upper connection, and the axial spiracle of upper connection is communicated with capsule chamber and upper connection upper space.
The feature that viscous crude (underground viscosity is greater than the crude oil of 50Pas) has asphalitine and gum level is higher, viscosity large fluidity is poor; in utilizing Electric Submersible Pump Unit lifting recovery process often because spiracle is stopped up by viscous crude piece; make protector unsmooth breath; even can not breathe, cause protector to lose it and according to Electric Submersible Pump Unit temperature variation internal electrical machine oil and extraneous well liquid, carry out the fundamental function of free displacement, maintenance oil-submersible motor internal and external pressure balance.Because protector lost efficacy at short notice, well liquid enters oil-submersible motor, the fault such as oil-submersible motor naked finally occurs, burn, thus cause that Electric Submersible Pump Unit shuts down the well of lying, bring huge economic loss, cause thickened oil recovery cost high.
Model utility content
In order to overcome the protector spiracle of submersible electric pump existence in viscous crude is produced, by viscous crude piece, stopped up; cause oil-submersible motor to damage; production can not normally be carried out, the deficiency that thickened oil recovery cost is high, and the utility model provides a kind of submersible electric pump protector viscous crude anti-block device.
The utility model solves the technological scheme that its technical problem adopts: submersible electric pump protector viscous crude anti-block device comprises upper connection, capsule housing, capsule, axle, upper connection is fixedly connected with capsule housing, the upper end portion of axle is connected with deaerator axle by spline housing through the axial hole of upper connection from capsule housing, and mechanical seal assembly is installed between axle and upper connection; The axial spiracle of upper connection is communicated with capsule housing inner chamber and upper connection inner chamber.The axle that is positioned at upper connection inner chamber is installed with stirring wheel, sieve plate assembly from top to bottom; Upper connection has 2 radial direction through hole to be positioned at the top of stirring wheel, is installed with respectively fluid one-way valve, feed liquor one-way valve in radial direction through hole.
The sieve plate of sieve plate assembly is fixed by screws on the end face of fixed cover, and sieve plate is discoideus, has axial sieve aperture on sieve plate.In the circumference of hub of stirring wheel, be evenly equipped with 3 blades; The axial end of blade is outwards trapezoid shaped by wheel hub, and the radial end face of blade is outwards trapezoid shaped by wheel hub.Stirring wheel, sieve plate assembly are fixedly mounted on axle by key and jump ring.
The beneficial effects of the utility model are; rational in infrastructure; can improve the anti-stifled ability of viscous crude of submersible electric pump protector; reduce or stop protector spiracle and stopped up by viscous crude; extend the working life of protector; applicable viscous crude, super viscous crude and the exploitation of special thick oil well better, thus the working life of Electric Submersible Pump Unit extended.
Accompanying drawing explanation
Fig. 1 is the utility model submersible electric pump protector viscous crude anti-block device structural representation.
Fig. 2 is the end view drawing of sieve plate in the utility model.
Fig. 3 is the A-A sectional drawing of Fig. 1.
In figure: 1. fluid one-way valve, 2. stirring wheel, 3. sieve plate assembly, 4. upper connection, 5. spiracle, 6. feed liquor one-way valve, 7. axle, 8. jump ring, 9. capsule housing, 10. screw, 11. sieve plates, 12. fixed covers, 13. sieve apertures, 14. mechanical seal assemblies, 15. blades, 16. wheel hubs, 17. spline housings, 18. capsules, 19. keys.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.But those skilled in the art should know, the invention is not restricted to listed embodiment, as long as spirit according to the invention all should be included in protection domain of the present utility model.
Referring to accompanying drawing 1.The utility model submersible electric pump protector viscous crude anti-block device comprises upper connection 4, capsule 18, capsule housing 9, axle 7, stirring wheel 2, sieve plate assembly 3, upper connection 4 is fixedly connected with capsule housing 9, the upper end of axle 7 is connected with deaerator axle by spline housing 17 through the axial hole of upper connection 4 from capsule housing 9, between axle 7 and upper connection 4, mechanical seal assembly 14 is installed; The axial spiracle 5 of upper connection 4 is communicated with capsule housing 9 inner chambers and upper connection 4 inner chambers.
The axle 7 that is positioned at upper connection 4 inner chambers is installed with stirring wheel 2, sieve plate assembly 3 from top to bottom.Stirring wheel 2, sieve plate assembly 3 are radially fixed by key 19 and axle 7; On the axle 7 of the upper end of stirring wheel 2, sieve plate assembly 3 lower ends, jump ring 8 is installed, by stirring wheel 2, sieve plate assembly 3 axial restraints.
Referring to Fig. 3.On wheel hub 16 circumference of stirring wheel 2, be evenly equipped with 3 blades 15.The axial end of blade 15 is outwards trapezoid shaped by wheel hub 16, and the radial end face of blade 15 is outwards trapezoid shaped by wheel hub 16.The shape of blade 15 is conducive to stirring wheel 2 and under High Rotation Speed, viscous crude piece is pulverized.Stirring wheel 2 is selected the material of high strength, high abrasion, can work long hours and not be worn corrosion.
The utility model submersible electric pump protector viscous crude anti-block device is arranged on fluid one-way valve 1, feed liquor one-way valve 6 belows of protector upper connection 4 Nei Yujing liquid UNICOMs.Stirring wheel 2, under axle 7 High Rotation Speeds drive, is smashed the block viscous crude that enters protector and mixes with mobile viscous crude, increases the mobility of viscous crude simultaneously; Sieve plate assembly 3, by remaining viscous crude piece or foreign body filtering, prevents that it from stopping up spiracle 5 or entering protector by spiracle 5; Improve the working environment of protector first mechanical seal assembly 14 simultaneously; protector can be breathed normally in the environment of hyperviscosity viscous crude; and the life-span of prolonged mechanical seal assembly; thereby extend the working life of Electric Submersible Pump Unit; guarantee Electric Submersible Pump Unit is normally moved, and thickened oil recovery is produced and normally carried out.
It should be noted that above-described embodiment is example and unrestricted the utility model, those skilled in the art can design a lot of alternate embodiments and not depart from the claim scope of this patent.
Claims (4)
1. a submersible electric pump protector viscous crude anti-block device, comprise upper connection, capsule housing, capsule, axle, upper connection is fixedly connected with capsule housing, the upper end portion of axle is connected with deaerator axle by spline housing through the axial hole of upper connection from capsule housing, and mechanical seal assembly is installed between axle and upper connection; The axial spiracle of upper connection is communicated with capsule housing inner chamber and upper connection inner chamber, it is characterized in that:
The axle (7) that is positioned at described upper connection (4) inner chamber is installed with stirring wheel (2), sieve plate assembly (3) from top to bottom;
Described upper connection (4) has 2 radial direction through hole to be positioned at the top of stirring wheel (2), is installed with respectively fluid one-way valve (1), feed liquor one-way valve (6) in radial direction through hole.
2. submersible electric pump protector viscous crude anti-block device according to claim 1; it is characterized in that: the sieve plate (11) of described sieve plate assembly (3) is fixedly mounted on the end face of fixed cover (12) by screw (10); described sieve plate (11) is discoideus, has axial sieve aperture (13) on sieve plate (11).
3. submersible electric pump protector viscous crude anti-block device according to claim 2, is characterized in that: on wheel hub (16) circumference of described stirring wheel (2), be evenly equipped with 3 blades (15); The axial end of blade (15) is outwards trapezoid shaped by wheel hub (16), and the radial end face of blade (15) is outwards trapezoid shaped by wheel hub (16).
4. submersible electric pump protector viscous crude anti-block device according to claim 3, is characterized in that: described stirring wheel (2), sieve plate assembly (3) are fixedly mounted on axle (7) by key (19) and jump ring (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320499649.3U CN203453031U (en) | 2013-08-15 | 2013-08-15 | Thickened oil blockage prevention device of electric submersible pump protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320499649.3U CN203453031U (en) | 2013-08-15 | 2013-08-15 | Thickened oil blockage prevention device of electric submersible pump protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203453031U true CN203453031U (en) | 2014-02-26 |
Family
ID=50132913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320499649.3U Expired - Fee Related CN203453031U (en) | 2013-08-15 | 2013-08-15 | Thickened oil blockage prevention device of electric submersible pump protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203453031U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373334A (en) * | 2013-08-15 | 2015-02-25 | 中国石油天然气集团公司 | Heavy oil blockage preventer for protector of electric submersible pump |
| CN113153251A (en) * | 2021-02-07 | 2021-07-23 | 胜利油田胜利泵业有限责任公司 | Rotary shearing type polymer viscosity reduction device |
-
2013
- 2013-08-15 CN CN201320499649.3U patent/CN203453031U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373334A (en) * | 2013-08-15 | 2015-02-25 | 中国石油天然气集团公司 | Heavy oil blockage preventer for protector of electric submersible pump |
| CN113153251A (en) * | 2021-02-07 | 2021-07-23 | 胜利油田胜利泵业有限责任公司 | Rotary shearing type polymer viscosity reduction device |
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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: 20140226 Termination date: 20210815 |