CN201218212Y - Electric submersible centrifugal pump - Google Patents
Electric submersible centrifugal pump Download PDFInfo
- Publication number
- CN201218212Y CN201218212Y CNU2008201092458U CN200820109245U CN201218212Y CN 201218212 Y CN201218212 Y CN 201218212Y CN U2008201092458 U CNU2008201092458 U CN U2008201092458U CN 200820109245 U CN200820109245 U CN 200820109245U CN 201218212 Y CN201218212 Y CN 201218212Y
- Authority
- CN
- China
- Prior art keywords
- centrifugal pump
- impeller
- electric submersible
- submersible centrifugal
- guide wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
A submersible electric centrifugal pump is used for overcoming the deficiency of low pumping efficiency of the prior submersible electric centrifugal pump in the operation of drilling for thick oil. The width L of an impeller flow channel (11) of the submersible electric centrifugal pump is more than 5 mm; the lower part of a guide wheel (8) and the upper part of a lower supporting frame (5) on a shaft (4) are fixedly provided with magnetic scale removers (10); and the surfaces of the guide wheel (8) and an impeller (9) are painted with alloy coating layers (12). The utility model has the advantages that the area of passage the impeller is increased, the roughness of the surfaces of the guide wheel and the impeller are decreased, thus thick oil is suitable for flowing. Meanwhile, the magnetic scale removers which are additionally arranged have the functions of emulsion breaking and viscosity reduction and can effectively prevent scale formation and asphalt deposition so as to guarantee that the flow channels are smooth. The submersible electric centrifugal pump is suitable for the operation of drilling for thick oil.
Description
Affiliated technical field
The utility model relates to a kind of oil-gas mining pumping unit electric submersible pump, especially relates to a kind of electric submersible centrifugal pump.
Background technique
Electric submersible centrifugal pump is the higher pumping unit of a kind of discharge capacity, is the multistage centrifugal pump in underground work, with oil pipe G.I.H together.Electric submersible centrifugal pump mainly by rotate and fixedly two-part form, rotating part mainly comprises axle, key, impeller, pad, axle sleeve and spacing jump ring etc.; Standing part mainly comprises housing, pump head, pump seat, leads shell and alignment bearing etc.The impeller of existing electric submersible centrifugal pump, to lead shell be the precision casting part, and surface roughness is
The impeller channel width is generally 4mm, when heavy crude producing, because viscous crude has characteristics such as hydrocarbon content is low, paraffin content is few, colloid, asphalt content height, solidifying point is low, flowability is poor, pitch easily is deposited in the narrow impeller channel, cause runner to stop up, pump efficiency reduces, and is difficult to satisfy thickened oil recovery operation needs.
The model utility content
In order to overcome existing electric submersible centrifugal pump low deficiency of pump efficiency in the heavy crude producing operation, the utility model provides a kind of electric submersible centrifugal pump, can be applicable to thickened oil recovery operation needs, effectively improves pump efficiency.
The technological scheme that its technical problem that solves the utility model adopts is: electric submersible centrifugal pump comprises axle, impeller, leads shell, housing, pump head, pump seat, bearing bracket, lower support frame, spline housing, and impeller channel width L is greater than 5mm; Below the guide wheel on the axle, the lower support frame upper fixed is equipped with the magnetic descaler; Lead shell and impeller surface has alloy coat.
The beneficial effects of the utility model are that shell is led in the increase of impeller area of passage and the impeller surface roughness reduces, suitable viscous crude flows, and the magnetic descaler that installs additional simultaneously has the effect of breakdown of emulsion viscosity reduction, can effectively prevent fouling and pitch deposition, the assurance runner is unimpeded, is applicable to the thickened oil recovery operation.
Description of drawings
Fig. 1 is the structural representation of the utility model electric submersible centrifugal pump.
Fig. 2 is an impeller channel A partial enlarged drawing among Fig. 1.
Among the figure: 1. pump head, 2. housing, 3. bearing bracket, 4. spool, and 5. lower support frame, 6. pump seat, 7. spline housing is 8. led shell, 9. impeller, 10. magnetic descaler, 11. impeller channels, 12. alloy coats.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
The utility model electric submersible centrifugal pump, comprise pump head 1, housing 2, bearing bracket 3, axle 4, lower support frame 5, pump seat 6, spline housing 7, guide wheel 8, impeller 9, standing part mainly comprises housing 2, pump head 1, pump seat 6, guide wheel 8, bearing bracket 3, lower support frame 5 etc.; Rotating part mainly comprises axle 4, impeller 9, spline housing 7 etc.; Bearing bracket 3, impeller 9, lower support frame 5 from top to bottom are installed on the axle 4 successively.Impeller channel 11 width L are generally 5～8mm greater than 5mm, better effects if when the width L of impeller channel 11 is 6～7mm.By strengthening impeller channel 11 width, increased the area of passage of impeller, be convenient to viscous crude and flow.
Be installed with magnetic descaler 10 on the axle 4 between guide wheel 8 and the lower support frame 5, the magnetic field of magnetic descaler 10 has breakdown of emulsion and viscosity reduction effect to crude oil, can prevent the generation of fouling and pitch depositional phenomenon, guarantees the unimpeded of runner.Can install multistage magnetic descaler 10 auxiliary viscosity reductions additional on the axle 4 that do not coexist according to medium.
In order to improve the flowability of liquid between guide wheel 8, impeller 9, be coated with alloy coat 12 at guide wheel 8 and impeller 9 surfaces, alloy coat 12 is selected nickel phosphor alloy usually for use.The guide wheel 8 and impeller 9 surface roughnesses that scribble the nickel phosphor alloy coating reduce, and can reach
Can prevent the deposition of colloidal bitumen in the pump effectively, greatly reduce the surface friction drag of electric submersible centrifugal pump parts and medium, also improve the wear-resisting and corrosion resistance of parts simultaneously, prevent the h2s gas well corrosion.
The utility model electric submersible centrifugal pump is by adopt strengthening impeller channel width, blade guiding wheel surface and increase alloy coat and install additional technology such as magnetic descaler, satisfies the viscous crude requirement of flowing, and guarantees the pump efficiency of electric submersible centrifugal pump when the thickened oil recovery operation.
Claims (5)
1. an electric submersible centrifugal pump comprises axle, impeller, leads shell, housing, pump head, pump seat, bearing bracket, lower support frame, spline housing, it is characterized in that: impeller channel (11) width L is greater than 5mm; Guide wheel (8) below on axle (4), lower support frame (5) upper fixed are equipped with magnetic descaler (10).
2. electric submersible centrifugal pump according to claim 1 is characterized in that: describedly lead shell (8) and there is alloy coat (12) on impeller (9) surface.
3. electric submersible centrifugal pump according to claim 2 is characterized in that: described alloy coat (12) is the nickel phosphor alloy coating.
4. according to the arbitrary described electric submersible centrifugal pump of claim 1～3, it is characterized in that: impeller channel (11) width L is 5～8mm.
5. electric submersible centrifugal pump according to claim 4 is characterized in that: impeller channel (11) width L is 6～7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201092458U CN201218212Y (en) | 2008-07-16 | 2008-07-16 | Electric submersible centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201092458U CN201218212Y (en) | 2008-07-16 | 2008-07-16 | Electric submersible centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201218212Y true CN201218212Y (en) | 2009-04-08 |
Family
ID=40541049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201092458U Expired - Fee Related CN201218212Y (en) | 2008-07-16 | 2008-07-16 | Electric submersible centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201218212Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2467605A1 (en) * | 2009-08-19 | 2012-06-27 | Robert Bosch GmbH | Delivery unit |
| CN106194775A (en) * | 2016-08-25 | 2016-12-07 | 中国石油天然气股份有限公司 | Ternary composite antiscale oil-submersible electric pump |
-
2008
- 2008-07-16 CN CNU2008201092458U patent/CN201218212Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2467605A1 (en) * | 2009-08-19 | 2012-06-27 | Robert Bosch GmbH | Delivery unit |
| CN106194775A (en) * | 2016-08-25 | 2016-12-07 | 中国石油天然气股份有限公司 | Ternary composite antiscale oil-submersible electric pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CNPC BOHAI PETROLEUM EQUIPMENT MANUFACTURING CO., Free format text: FORMER OWNER: DAGANG OILFIELD GROUP, ZHONGCHENG MACHINERY MANUFACTURING CO., LTD. Effective date: 20100903 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 300280 CHUANGANG ROAD, DAGANG OILFIELD, TIANJIN CITY TO: 300280 CHUANGANG ROAD, DAGANG OILFIELD, DAGANG DISTRICT, TIANJIN CITY |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100903 Address after: 300280 Tianjin City, Grand Port Dagang Oilfield Sichuan Road Patentee after: CNPC Bohai Equipment Manufacturing Co., Ltd. Address before: 300280 Tianjin Dagang Oilfield Sichuan Road Patentee before: Dagang Oilfield Group, Zhongcheng Machinery Manufacturing Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090408 Termination date: 20140716 |
|
| EXPY | Termination of patent right or utility model |