CN201173176Y - Double screw rod oil extraction pump device - Google Patents
Double screw rod oil extraction pump device Download PDFInfo
- Publication number
- CN201173176Y CN201173176Y CNU200820019437XU CN200820019437U CN201173176Y CN 201173176 Y CN201173176 Y CN 201173176Y CN U200820019437X U CNU200820019437X U CN U200820019437XU CN 200820019437 U CN200820019437 U CN 200820019437U CN 201173176 Y CN201173176 Y CN 201173176Y
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- assembly
- screw
- housing
- twin
- cardan shaft
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Abstract
The utility model discloses a double-screw oil extracting pump device which comprises an oil immersing motor, a protector, a cardan shaft component, a gear component, a thrust bearing component, a mechanical sealing component and a double-screw pump which are connected in sequence from a motor to a pump outlet. The double-screw oil extracting pump device is designed into a plurality of separated components to ensure the length of each component is short, thereby being convenient for the processing and transporting; both the installation and the disassembly are convenient, and the defective components can be singly replaced or disassembled for the maintenance, thereby the maintenance cost is reduced, space is provided for lubricating each component, and the service lives of the components are prolonged.
Description
Technical field
The utility model relates to extracting device of oil, more precisely is a kind of twin-screw oil extraction pump device that is used to recover the oil.
Background technique
At present, the structural type that is applied to the electrical submersible twin-screw oil recovery pump structure of down-hole and ground double-screw mixing transmission pump is basic identical, mainly is made up of motor part, protector part, gear, bearing, Sealing, twin-screw part etc.This structure exists a lot of not enough.
Usually gear, bearing, Sealing all hold together by bolt with the twin-screw part, when certain part breaks down, all pull down maintenance to all parts, have increased maintenance cost.And connect like this, make that the lubricated space of gear, bearing is little, be unfavorable for the heat radiation of lubricant medium, influence the working life of parts.
In order to offset axial force, the rotor design of twin-screw becomes the structure of two spirals of symmetric arrangement on the single axle, stator is the double suction entrance structure, this just requires to process the elongated oil transportation channel that runs through stator in stator interior, and the two ends of stator also will process the space that is used to install gear, rolling bearing and Sealing, therefore make the processing technology complexity of the single-stage pump housing, difficulty of processing is big; Simultaneously, gear, bearing, Sealing etc. are installed are made that also the length of single-stage is big, be unfavorable for series operation.
Owing to above reason, be necessary to study a kind of novel down-hole oil production pump and overcome above deficiency.
The model utility content
Technical problem to be solved in the utility model provides a kind of twin-screw oil extraction pump device of making, keeping in repair be convenient to.
In order to address the above problem, the utility model is taked following technological scheme:
A kind of twin-screw oil extraction pump device is characterized in that, comprises oil-submersible motor, protector, cardan shaft assembly, gear assembly, thrust bearing assembly, mechanical sealing assembly and two screw pump, and above-mentioned parts connect from the motor to the delivery side of pump successively.
Described cardan shaft assembly comprises cardan shaft housing, two cardan shaft and sliding bearing; the cardan shaft lower end is connected with the cardan shaft flange; the cardan shaft flange connects the flanged joint of above-mentioned protector, and sliding bearing is set in described cardan shaft two ends, and cardan shaft assembly upper end links to each other with gear assembly.
Described gear assembly comprises gear casing, duplex angular gear and sliding bearing, described gear casing connects the housing of described cardan shaft assembly, one rooted tooth wheel shaft of described cardan shaft and described gear assembly is connected, the sheathed described sliding bearing in described gear shaft two ends, the lower end of described gear assembly connects described thrust bearing assembly.
Described thrust bearing assembly comprises housing, two groups of thrust bearings and two transmission shafts, the housing of described thrust bearing assembly is connected with the housing of said gear assembly, described two groups of thrust bearings are set in respectively on two transmission shafts, and be crisscross arranged, described bearing pack is connected with housing by the bearing pack seat, the upper end of described housing is connected with the shell of gear assembly, two transmission shaft upper ends are connected with two rooted tooth wheel shafts of described gear assembly, and the lower end of thrust bearing assembly is connected with described mechanical sealing assembly.
Described mechanical sealing assembly comprises housing, mechanical seal and two coupling shafts, mechanical seal is arranged on outside the coupling shaft, the housing of described black box is connected with the housing of above-mentioned thrust bearing assembly, two coupling shafts of described mechanical sealing assembly and two transmission shafts of described thrust bearing assembly are connected respectively, and the other end of described mechanical sealing assembly connects described two screw pump.
Described two screw pump comprises twin-screw joint, alignment bearing, twin-screw shell, stator, two twin-screw rotor, two rotors intermesh in stator, form continuous seal chamber one by one, described alignment bearing is set in the two ends of rotor shaft, the upper end of two screw pump connects the housing of described mechanical sealing assembly by described twin-screw joint, and two roots rotor axles of two screw pump connect two coupling shafts of described mechanical sealing assembly respectively.The beneficial effects of the utility model are: be designed to independently a plurality of assemblies respectively, make the length of each assembly little, be convenient to processing and transportation; Make things convenient for installation and removal, can change faulty components separately or pull down maintenance, reduced maintenance cost, and the lubricated space that provides of each assembly has been provided, prolonged the working life of parts.
Description of drawings
Fig. 1 is the general structure block diagram;
Fig. 2 is the structural representation that protector is connected with the cardan shaft assembly;
Fig. 3 is the structural representation of cardan shaft assembly;
Fig. 4 is the structural representation that the cardan shaft assembly is connected with gear assembly;
Fig. 5 is the structural representation that mechanical seal is connected with thrust bearing assembly.
Embodiment
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, a kind of twin-screw oil extraction pump device comprises oil-submersible motor, protector 1, cardan shaft assembly 2, gear assembly 3, thrust bearing assembly 4, mechanical sealing assembly 5 and two screw pump 6, and above-mentioned parts connect from the motor to the delivery side of pump successively.Be designed to independently a plurality of assemblies respectively, make the length of each assembly little, be convenient to processing and transportation; Make things convenient for installation and removal, can change faulty components separately or pull down maintenance, reduced maintenance cost, and the lubricated space that provides of each assembly has been provided, prolonged the working life of parts.
With reference to Fig. 2, above-mentioned protector 1 mainly comprises following 14 of main shaft 11, capsule 12, the capsule seat of honour 13 and capsule, thrust bearing 15, and the lower end links to each other with motor by connecing motor termination 10.
With reference to Fig. 3; described cardan shaft assembly 2 mainly comprises cardan shaft housing 20, cardan shaft 21 and sliding bearing 22; cardan shaft 21 lower ends are connected with cardan shaft flange 23, and cardan shaft flange 23 connects the flanged joint 16 of above-mentioned protector, and sliding bearing 22 is set in described cardan shaft 21 two ends.
With reference to Fig. 3 and Fig. 4, described gear assembly 3 comprises gear casing 30, duplex angular gear 31 and sliding bearing 32, the shell 30 of gear assembly and the housing 20 of above-mentioned cardan shaft assembly are threaded by coupling joint 24 and joint 302, the cardan shaft 21 of a described rooted tooth wheel shaft 31 and above-mentioned cardan shaft assembly is connected by spline housing 303, the sheathed described sliding bearing 32 in described gear shaft two ends.Because gear assembly is an absolute construction, therefore can be lubricated, dispels the heat gear train more easily, thereby improve the life-span of gear.
With reference to Fig. 4, described thrust bearing assembly 4 comprises housing 40, two groups of thrust bearings 41 and two transmission shafts 42, the housing 40 of described thrust bearing assembly and the shell 30 of said gear assembly are threaded by joint 403, two transmission shafts 42 of described thrust bearing assembly and two rooted tooth wheel shafts 31 of said gear assembly are connected, described two groups of thrust bearings are set in respectively on two transmission shafts 42, and be crisscross arranged, described bearing pack is connected with housing 40 by bearing pack seat 43.The labyrinth of two screw pump has been simplified in the modularization of thrust-bearing, has shortened the overall dimensions of the pump housing, and the lubricated condition that provides of bearing is provided simultaneously, thus the working life of having improved bearing.
With reference to Fig. 5, described mechanical sealing assembly 5 comprises housing 50, mechanical seal 51 and two coupling shafts 52, mechanical seal 51 is arranged on outside the coupling shaft 52, the shell 50 of above-mentioned thrust bearing assembly and the housing 50 of described black box are threaded by connecting head 504, and two coupling shafts 52 of described mechanical sealing assembly and two transmission shafts 42 of described thrust bearing assembly are connected by spline housing 505.Mechanical seal separates the lubricant medium in the crude oil and the pump housing.
Refer again to Fig. 5, described two screw pump 6 comprises that twin-screw shell 60, alignment bearing 61, stator 62, two twin-screw rotor 63 and twin-screw joint 64, two rotors 63 intermesh in stator 62, form continuous seal chamber one by one, the motion of promotion fluid, described alignment bearing 61 is set in the two ends of rotor shaft 63, the shell 60 of two screw pump and the housing 50 of above-mentioned mechanical sealing assembly are threaded by connecting head 605, and two roots rotor axles 64 of two screw pump are connected by spline housing 606 with two coupling shafts 52 of described mechanical sealing assembly respectively.In order to improve lift, but plural serial stage work.
The utility model adopts motor direct-drive, need not to add speed reducer, and the stator of two screw pump, rotor are all-metal material, and through surface Hardening Treatment, but the pumping gassiness, contains the viscous crude liquid of sand.Can adopt the variable frequency regulating speed control device that motor is carried out speed regulating control, adapt to the needs of different displacements scope.
This modularization structure that is threaded can be pulled down modular repair separately when certain part breaks down, reduced maintenance cost.The independently modularization of protector, cardan shaft, synchromesh gear, thrust-bearing simultaneously; increased the space of lubricant medium,, prolonged the working life of parts for the heat radiation of lubricant medium provides condition question; and each length component is little, is convenient to processing and transportation.Two screw pump is made up of frame, rotor, stator, sliding bearing etc., and rotor is a single-screw, and size is short, and single-stage twin-screw part simple in structure is convenient to processing and plural serial stage work.Stator need not the processing slim oil transportation channel; Only radially set upright with sliding bearing, axial force is all by independently thrust bearing assembly carrying, so single-stage length is little, and simple in structure, the manufacturing difficulty is little, is easy to series connection and uses.
The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (6)
1, a kind of twin-screw oil extraction pump device is characterized in that, comprises oil-submersible motor, protector, cardan shaft assembly, gear assembly, thrust bearing assembly, mechanical sealing assembly and two screw pump, and above-mentioned parts connect from the motor to the delivery side of pump successively.
2, twin-screw oil extraction pump device according to claim 1; it is characterized in that; described cardan shaft assembly comprises cardan shaft housing, two cardan shaft and sliding bearing; the cardan shaft lower end is connected with the cardan shaft flange; the cardan shaft flange connects the flanged joint of above-mentioned protector; sliding bearing is set in described cardan shaft two ends, and cardan shaft assembly upper end links to each other with gear assembly.
3, twin-screw oil extraction pump device according to claim 1, it is characterized in that, described gear assembly comprises gear casing, duplex angular gear and sliding bearing, described gear casing connects the housing of described cardan shaft assembly, one rooted tooth wheel shaft of described cardan shaft and described gear assembly is connected, the sheathed described sliding bearing in described gear shaft two ends, the lower end of described gear assembly connects described thrust bearing assembly.
4, twin-screw oil extraction pump device according to claim 1, it is characterized in that, described thrust bearing assembly comprises housing, two groups of thrust bearings and two transmission shafts, the housing of described thrust bearing assembly is connected with the housing of said gear assembly, described two groups of thrust bearings are set in respectively on two transmission shafts, and be crisscross arranged, described bearing pack is connected with housing by the bearing pack seat, the upper end of described housing is connected with the shell of gear assembly, two transmission shaft upper ends are connected with two rooted tooth wheel shafts of described gear assembly, and the lower end of thrust bearing assembly is connected with described mechanical sealing assembly.
5, twin-screw oil extraction pump device according to claim 1, it is characterized in that, described mechanical sealing assembly comprises housing, mechanical seal and two coupling shafts, mechanical seal is arranged on outside the coupling shaft, the housing of described black box is connected with the housing of above-mentioned thrust bearing assembly, two coupling shafts of described mechanical sealing assembly and two transmission shafts of described thrust bearing assembly are connected respectively, and the other end of described mechanical sealing assembly connects described two screw pump.
6, twin-screw oil extraction pump device according to claim 1, it is characterized in that, described two screw pump comprises twin-screw joint, alignment bearing, twin-screw shell, stator, two twin-screw rotor, two rotors intermesh in stator, form continuous seal chamber one by one, described alignment bearing is set in the two ends of rotor shaft, the upper end of two screw pump connects the housing of described mechanical sealing assembly by described twin-screw joint, and two roots rotor axles of two screw pump connect two coupling shafts of described mechanical sealing assembly respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820019437XU CN201173176Y (en) | 2008-03-24 | 2008-03-24 | Double screw rod oil extraction pump device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820019437XU CN201173176Y (en) | 2008-03-24 | 2008-03-24 | Double screw rod oil extraction pump device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201173176Y true CN201173176Y (en) | 2008-12-31 |
Family
ID=40200294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820019437XU Expired - Fee Related CN201173176Y (en) | 2008-03-24 | 2008-03-24 | Double screw rod oil extraction pump device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201173176Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102317571A (en) * | 2009-02-10 | 2012-01-11 | 英国石油勘探运作有限公司 | Pump |
-
2008
- 2008-03-24 CN CNU200820019437XU patent/CN201173176Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102317571A (en) * | 2009-02-10 | 2012-01-11 | 英国石油勘探运作有限公司 | Pump |
| CN102317571B (en) * | 2009-02-10 | 2014-11-26 | 英国石油勘探运作有限公司 | Pump |
| US8985975B2 (en) | 2009-02-10 | 2015-03-24 | Bp Exploration Operating Company Limited | Multistage pump suitable for use in wells |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081231 Termination date: 20130324 |