CN203691081U - Oil-submerged pump direct drive ultra thin-long concentrated winding permanent magnetism motor - Google Patents
Oil-submerged pump direct drive ultra thin-long concentrated winding permanent magnetism motor Download PDFInfo
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- CN203691081U CN203691081U CN201320744572.1U CN201320744572U CN203691081U CN 203691081 U CN203691081 U CN 203691081U CN 201320744572 U CN201320744572 U CN 201320744572U CN 203691081 U CN203691081 U CN 203691081U
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Abstract
The utility model provides an oil-submerged pump direct drive ultra thin-long concentrated winding permanent magnetism motor comprising a motor unit; the motor unit comprises a stator core in a split structure; the stator core is formed in an annular shaped by assembling a plurality of iron core pieces with windings; each iron core piece with the winding comprises a thin-long iron core piece and a winding copper wire; each the thin-long iron core piece is formed by stacking T-shaped punching sheets, is provided with a stator tooth, and the winding copper wire is winded on the stator tooth. The iron core piece with winding technology can be easily realized, and manufacture is simple.
Description
Technical field
The utility model relates to oil recovery field, is specifically related to oil extraction in oil field plant equipment, particularly a kind of permanent magnet synchronous motor, and a kind of oil-immersed pump directly drives ultra-fine length and concentrates winding permanent magnet motor.
Background technology
Along with oil extraction in oil field industrial expansion, the operating mode of oil-extracting screw pump becomes increasingly complex, the application of the new technologies such as inclined shaft, horizontal well, the exploitation of difficult mining-employed reserves, height increases gradually containing sand drain, heavy oil wells, and the pumping rod type of traditional ground screw pump had exposed many drawbacks already.At present, the application of underground submersible screw pump receives much concern.Particularly the straight drive system of permagnetic synchronous motor is famous with low speed high torque; But because the slim-lined construction of motor sleeve pipe greatly reduces the engineering practicability of submersible screw pump.Tradition submersible screw pump generally adopts the two poles of the earth three phase squirrel cage induction motor as drive motors, its motor stator core total length can reach 7-10 rice, due to problems such as amounts of deflection, can produce very large power loss, its overlength iron core also can propose requirements at the higher level to motor inserting-coil process, causes difficulty to maintenance work.
In sum, in prior art, there is following problem: existing permanent magnet motor is in the time of coiling, stator winding is that according to above-below direction, from head to tail, manual threading forms by the winding slot in stator core, reach 7-10 rice (belonging to ultra-fine length) for motor stator core total length, the structure that the area of winding slot is very narrow, in this elongated winding slot, threading difficulty is very big, and efficiency is extremely low.
Utility model content
The utility model provides a kind of oil-immersed pump directly to drive ultra-fine length and concentrates winding permanent magnet motor, and to solve existing permanent magnet motor in the time winding the line, difficulty is large, inefficient problem.
For this reason, the utility model proposes a kind of oil-immersed pump and directly drive the concentrated winding permanent magnet motor (being winding permanent magnet motor in the straight round-up of oil-immersed pump) of ultra-fine length, described oil-immersed pump directly drives ultra-fine length and concentrates winding permanent magnet motor to comprise: at least one electric motor units, and described electric motor units comprises:
Stator core, described stator core is split-type structural, described stator core is assembled into annular by multiple band winding iron core pieces;
Each described band winding iron core piece comprises: elongated iron core piece and be wrapped in the winding copper cash on described elongated iron core piece;
Described elongated iron core piece is formed by T-shaped punching stack, and each described elongated iron core piece has a stator tooth, and described winding copper cash is wrapped on described stator tooth, and the winding copper cash of described stator tooth both sides interconnects.
Further, described oil-immersed pump directly drive ultra-fine length concentrate winding permanent magnet motor comprise: multiple successively connect described electric motor units.
Further, each described electric motor units is connected with the mode of machinery series connection by electric parallel connection.
Further, described elongated iron core piece is formed and is comprised by T-shaped punching stack: described elongated iron core piece is laminated moulding or passed through cramp welding fabrication by rivet by T-shaped punching.
Further, the both sides of the edge at each described top with winding iron core piece have welding groove, the positioning table that each described lateral surface with winding iron core piece has seam and matches with described seam shape, adjacent described band winding iron core piece is located by described seam, and connects by described welding groove.
Further, each described electric motor units also comprises: described stator core is provided with stator slot, and described stator slot is open slot or closed slot.
Further, described stator core adopts proper faction groove to concentrate winding configuration, and winding span is a groove, and number of stator slots coordinates with rotor selection of number of poles 12 groove/10 utmost points, and electric efficiency reaches 85%, and power factor reaches 0.99.
The utility model stator core is set to split-type structural, and stator core is assembled into annular by multiple band winding iron core pieces, and each described band winding iron core piece comprises: elongated iron core piece and be wrapped in the winding copper cash on described elongated iron core piece, along stator core in the radial direction, there is open winding space the both sides of the stator tooth of each elongated iron core piece, and the end direction of stator tooth also has open winding space, like this, in the both sides of stator tooth and three regions of end, all form open winding space, and the winding slot that the both sides of the stator tooth of traditional stator core are narrow elongate, the end of stator core is the confined space of holding rotor, therefore, in three regions of the both sides of the stator tooth of traditional stator core and end, it is all the limited winding space of sealing, the utility model is set to split-type structural by stator core, realize the improvement of winding mode, winding space and the degree of freedom are increased, by winding the line on the stator tooth at each elongated iron core piece, realize the continuous winding of elongated iron core piece, make winding copper cash can adopt mechanization mode directly to twine on stator tooth, thereby reduce coiling difficulty, improve efficiency.
The utility model additional advantage and effect:
1, the utility model band winding iron core piece wire winding easily realizes, and manufactures simply, and utilizes fractional-slot to concentrate winding configuration to improve motor output performance, reduces vibration and noise.
2, the utility model stator core winding end compactness, motor copper consumption reduces, and reduces motor manufacturing cost.
3, the utility model adopts low speed large torque moment permanent-magnet motor frequency change control strategy, and high starting torque can be provided, and utilizes the advantage of low speed large torque moment permanent-magnet synchronous motor, cancels the decelerator link in submersible screw pumping system; Effectively overcome the drawback that submersible screw pump inertia torque is large.
4, the utility model adopts the structure of split-type (split type one) stator core, not only solve a coiling difficult problem for submersible electric machine with oil, also coordinate with rotor number of poles by the number of stator slots of selecting 12 groove/10 utmost points, can reduce motor cogging torque, reduce vibration and the noise of motor.
5, oil-immersed pump of the present utility model directly drives ultra-fine length and concentrates the design rated speed of winding permanent magnet motor can be low to moderate tens revs/min, be used in 5 cun of serial oil submersible motor systems of half-covering tube 114/116, adopt the fit structure of 12 groove/10 utmost points, electric efficiency can reach 85%, power factor reaches 0.99, close to 1; Concentrate winding permanent magnet motor while being used in 7 cun of sleeve pipe 138 serial oil submersible motor systems when oil-immersed pump of the present utility model directly drives ultra-fine length, electric efficiency can reach 90%, and power factor reaches 0.99, close to 1; And the utility model is cancelled decelerator, oil-immersed pump directly drives ultra-fine length and concentrates winding permanent magnet motor and screw pump direct to connect in succession, can further improve the efficiency of submersible pump system; There is huge energy-saving effect for the submersible electric machine with oil of carrying out continuous duty.
Accompanying drawing explanation
Fig. 1 is the radial structure schematic diagram that oil-immersed pump of the present utility model directly drives the concentrated winding permanent magnet motor of ultra-fine length;
Fig. 2 is the perspective view of the utility model stator core;
Fig. 3 is the structural representation of the utility model band winding iron core piece;
Fig. 4 is the structural representation of the elongated iron core piece of the utility model.Drawing reference numeral explanation: 1, stator core, 2, casing, 3, rotor, 4, stator slot, 5, band winding iron core piece, 6, welding groove, 7, elongated iron core piece, 8, winding copper cash, 9, rivet, 11, seam, 12, stator tooth, 20, connecting portion, 110, positioning table, 125, winding space, 127, winding space, 60, solder joint
Embodiment
Understand for technical characterictic of the present utility model, object and effect being had more clearly, now contrast accompanying drawing embodiment of the present utility model is described.
Directly driving ultra-fine length according to the oil-immersed pump of the utility model embodiment concentrates winding permanent magnet motor to comprise: at least one electric motor units, and as depicted in figs. 1 and 2, described electric motor units comprises:
Stator core 1, described stator core is split-type structural, described stator core 1 is assembled into annular by multiple band winding iron core pieces 5;
As Fig. 2 and Fig. 3, each described band winding iron core piece 5 comprises: elongated iron core piece 7 and be wrapped in the winding copper cash 8 on described elongated iron core piece 7;
As Fig. 3 and Fig. 4, described elongated iron core piece 7 is formed by multiple T-shaped punching stacks, each described elongated iron core piece 7 has a stator tooth 12 and one and is connected to stator tooth 12 tops the connecting portion 20 adjacent with casing 2, namely, as shown in Figure 1, connecting portion 20 is the top of the elongated iron core piece 7 of T-shaped punching stack formation, and the connecting portion 20 of each elongated iron core piece 7 circumferentially arranges along stator core, and the connecting portion 20 of each elongated iron core piece 7 is connected to form annular stator.Stator tooth 12 vertically connecting portion 20 arranges or along the radially setting of stator core, described winding copper cash 8 is wrapped on described stator tooth 12, and the winding copper cash of described stator tooth both sides interconnects.
As shown in Figure 4, along stator core in the radial direction, there are open winding space 125(or winding slot in the both sides of the stator tooth 12 of each elongated iron core piece), and the end of stator tooth (bottom) direction also has open winding space 127, before multiple elongated iron core pieces 7 are combined to installation, for single elongated iron core piece 7, in the both sides 125 of stator tooth and three regions of end 127, all form open winding space, these three regions no longer include other structures of impact coiling, make the operation of coiling have enough spaces.
The utility model is set to split-type structural by stator core, realize the improvement of winding mode, winding space and the degree of freedom are increased, by winding the line on the stator tooth at each elongated iron core piece, realize the continuous winding of elongated iron core piece, make winding copper cash can adopt mechanization mode directly to twine on stator tooth, thereby reduced coiling difficulty, improved efficiency.
Further, whole oil-immersed pump directly drive ultra-fine length concentrate winding permanent magnet motor comprise: multiple successively connect described electric motor units.The length of each electric motor units is done length as far as possible, for example, reach 1 meter, and 1.5 meters, and set it as the ultra-fine length of oil-immersed pump and concentrate the important technology requirement of winding permanent magnet motor designs, calculate the output torque of single motor unit; Submersible pump system total torque as required select this electric motor units number of units, each electric motor units by electric parallel connection, mechanical series system finally transmission of torque to higher level's screw pump.
The oil-immersed pump that the utility model relates to directly drives ultra-fine length and concentrates winding permanent magnet motor slenderness ratio up to 1:50, even higher, be applied in 5 cun of half oil well casing, motor external diameter is less than 116mm, diameter of stator bore 60mm left and right, and motor length reaches 10m, the utility model is in the time of coiling, can reduce winding overhang length, save copper cash.
Further, described elongated iron core piece is formed and is comprised by T-shaped punching stack: described elongated iron core piece is laminated moulding or passed through cramp welding fabrication by rivet by T-shaped punching.As shown in Figure 4, elongated iron core piece laminates moulding by T-shaped punching by rivet 9, compact conformation like this.
Further, described winding copper cash directly twines on stator tooth by coil winding machine.As shown in Figure 1, have two winding copper cash 8 that separate between adjacent stators tooth, or adjacent stators has two groups of different winding copper cash 8 between holding, make like this winding mode mechanization, efficiency improves.In addition, described winding copper cash also can twine on stator tooth by manual kinking, like this, can not coil winding machine easy to use in the situation that, can improve the speed of hand winding, has still improved winding efficiency.
Further, as Fig. 2 and Fig. 4, the both sides of the edge at each described top with winding iron core piece have welding groove 6, the positioning table 110 that each described lateral surface with winding iron core piece has seam 11 and matches with described seam shape, adjacent described band winding iron core piece 7 is located (seam 11 coordinates with positioning table 110 location of phase adjacent band winding iron core piece) by described seam 11, and connects by described welding groove 6.As Fig. 1, be respectively with winding iron core piece 7 to be connected to form annular stator core 1 by solder joint 60 at welding groove 6 places, this mode connects simple and convenient.
Further, as shown in Figure 1, each described electric motor units also comprises: be arranged on the rotor 3 in described stator core.Stator core 1 is provided with stator slot 4.Stator slot 4 be open slot or closed slot all can, to improve motor performance (as better selection, stator slot 4 is closed slot, and open slot relatively can effectively reduce the problem such as machinery, surface and pulsation loss and vibration and noise of motor).
Further, as Fig. 2, described stator core adopts proper faction groove to concentrate winding configuration, and winding span is a groove.(in the time that every extremely every phase groove is counted q>1, be improper fraction groove, and be proper faction groove in the time that every extremely every phase groove is counted q<1.It is proper faction groove that proper faction groove is concentrated the stator winding of winding permanent magnet synchronous motor, adopt and concentrate winding, stator winding pitch is 1 tooth pitch, and stator core is combined by the band winding iron core piece identical with the stator number of teeth, and each band winding iron core piece can conveniently be realized automation rule).
The utility model also provides a kind of oil-immersed pump directly to drive the manufacture method of the concentrated winding permanent magnet motor of ultra-fine length, and the manufacture method of described permanent magnet motor comprises: first make an electric motor units, the manufacture method of described electric motor units comprises:
T-shaped punching stack is formed to elongated iron core piece, and each described elongated iron core piece has a stator tooth, and winding copper cash is wrapped on described stator tooth and forms and be with winding iron core piece;
Multiple described band winding iron core pieces are along the circumferential direction connected successively, be assembled into annular stator core;
By described annular stator core pressing in casing.
Further, the manufacture method of described permanent magnet motor also comprises: multiple described electric motor units are formed to whole oil-immersed pump by electric parallel connection and mechanical series system and directly drive the concentrated winding permanent magnet motor of ultra-fine length.The oil-immersed pump of making so directly drives ultra-fine length and concentrates winding permanent magnet motor, its winding mode is not directly to drive after ultra-fine length concentrates winding permanent magnet motor to connect and carry out threading or coiling at whole oil-immersed pump, but before electric motor units forms, even before the formation of stator core, wind the line, enough winding spaces are guaranteed, realize the improvement of winding mode, winding space and the degree of freedom are increased, realize the improvement of winding mode, winding space and the degree of freedom are increased, reduce coiling difficulty, improved efficiency.
Specific implementation process of the present utility model is: the stator core 1 of motor, and as shown in Figure 2, adopt fractional-slot to concentrate winding configuration, winding span is a groove, stator core 1 is by multiple band winding iron core piece 5 assembled formations; Band winding iron core piece 5(is as shown in Figure 3) be slim-lined construction, by elongated iron core piece 7(as shown in Figure 4) and winding copper cash 8 form, each elongated iron core piece 7 only has a stator tooth 12, winding copper cash 8 adopts mechanization mode directly to twine on stator tooth 12, has well solved the artificial threading inserting-coil process of traditional submersible electric machine with oil bottleneck; Elongated iron core piece 7 laminates moulding by T-shaped punching by rivet 9; Phase adjacent band winding iron core piece 5 is located by seam 11, welds groove 6 connect by both sides, is press fit in casing 2 after being assembled into circular stator core 1; Rotor 3 adopts surface-mount type structure or built-in structure.In addition, consider to improve motor performance, after stator core 1 assembled formation, in its iron core, round-formed open slot or closed slot all can.
The stator core wire winding of the utility model motor easily realizes, and manufactures simply, can be widely applied in the submersible pump system of cluster well, directional well and inclined shaft.
These are only the schematic embodiment of the utility model, not in order to limit scope of the present utility model.For each part of the present utility model can mutually combine under the condition of not conflicting; any those skilled in the art; do not depart from equivalent variations and the modification under the prerequisite of design of the present utility model and principle, done, all should belong to the scope of the utility model protection.
Claims (7)
1. oil-immersed pump directly drives ultra-fine length and concentrates a winding permanent magnet motor, it is characterized in that, described oil-immersed pump directly drives ultra-fine length and concentrates winding permanent magnet motor to comprise: at least one electric motor units, and described electric motor units comprises:
Stator core, described stator core is split-type structural, described stator core is assembled into annular by multiple band winding iron core pieces;
Each described band winding iron core piece comprises: elongated iron core piece and be wrapped in the winding copper cash on described elongated iron core piece;
Described elongated iron core piece is formed by T-shaped punching stack, and each described elongated iron core piece has a stator tooth, and described winding copper cash is wrapped on described stator tooth, and the winding copper cash of described stator tooth both sides interconnects.
2. oil-immersed pump as claimed in claim 1 directly drives ultra-fine length and concentrates winding permanent magnet motor, it is characterized in that, described oil-immersed pump directly drives ultra-fine length and concentrates winding permanent magnet motor to comprise: multiple described electric motor units that connect successively.
3. oil-immersed pump as claimed in claim 2 directly drives ultra-fine length and concentrates winding permanent magnet motor, it is characterized in that, each described electric motor units is connected with the mode of machinery series connection by electric parallel connection.
4. oil-immersed pump as claimed in claim 1 directly drives ultra-fine length and concentrates winding permanent magnet motor, it is characterized in that, described elongated iron core piece is formed and is comprised by T-shaped punching stack: described elongated iron core piece is laminated moulding or passed through cramp welding fabrication by rivet by T-shaped punching.
5. oil-immersed pump as claimed in claim 1 directly drives ultra-fine length and concentrates winding permanent magnet motor, it is characterized in that, the both sides of the edge at each described top with winding iron core piece have welding groove, the positioning table that each described lateral surface with winding iron core piece has seam and matches with described seam shape, adjacent described band winding iron core piece is located by described seam, and connects by described welding groove.
6. oil-immersed pump as claimed in claim 1 directly drives ultra-fine length and concentrates winding permanent magnet motor, it is characterized in that, described stator core is provided with stator slot, and described stator slot is open slot or closed slot.
7. oil-immersed pump as claimed in claim 6 directly drives ultra-fine length and concentrates winding permanent magnet motor, it is characterized in that, described stator core adopts proper faction groove to concentrate winding configuration, winding span is a groove, number of stator slots coordinates with rotor selection of number of poles 12 groove/10 utmost points, electric efficiency reaches 85%, and power factor reaches 0.99.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320744572.1U CN203691081U (en) | 2013-11-21 | 2013-11-21 | Oil-submerged pump direct drive ultra thin-long concentrated winding permanent magnetism motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320744572.1U CN203691081U (en) | 2013-11-21 | 2013-11-21 | Oil-submerged pump direct drive ultra thin-long concentrated winding permanent magnetism motor |
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| Publication Number | Publication Date |
|---|---|
| CN203691081U true CN203691081U (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320744572.1U Expired - Fee Related CN203691081U (en) | 2013-11-21 | 2013-11-21 | Oil-submerged pump direct drive ultra thin-long concentrated winding permanent magnetism motor |
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| CN (1) | CN203691081U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633755A (en) * | 2013-11-21 | 2014-03-12 | 中国石油天然气股份有限公司 | Oil-submerged pump direct-drive ultra-slender concentrated winding permanent magnet motor and manufacture method |
| CN109245341A (en) * | 2018-06-29 | 2019-01-18 | 台州创普机电有限公司 | DC brushless motor |
-
2013
- 2013-11-21 CN CN201320744572.1U patent/CN203691081U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633755A (en) * | 2013-11-21 | 2014-03-12 | 中国石油天然气股份有限公司 | Oil-submerged pump direct-drive ultra-slender concentrated winding permanent magnet motor and manufacture method |
| CN109245341A (en) * | 2018-06-29 | 2019-01-18 | 台州创普机电有限公司 | DC brushless motor |
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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 |
Granted publication date: 20140702 Termination date: 20211121 |
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| CF01 | Termination of patent right due to non-payment of annual fee |