CN203774911U - 12-pole squirrel-cage-free full-iron-core permanent-magnet submersible motor special for screw pump - Google Patents
12-pole squirrel-cage-free full-iron-core permanent-magnet submersible motor special for screw pump Download PDFInfo
- Publication number
- CN203774911U CN203774911U CN201320121619.9U CN201320121619U CN203774911U CN 203774911 U CN203774911 U CN 203774911U CN 201320121619 U CN201320121619 U CN 201320121619U CN 203774911 U CN203774911 U CN 203774911U
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- motor
- screw pump
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- iron core
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Abstract
A 12-pole squirrel-cage-free full-iron-core permanent-magnet submersible motor special for a screw pump comprises a motor housing, a motor head, a motor base, and stator punching sheets and rotors which are mounted inside the motor housing. The stator punching sheets and the rotors are of a multi-segment serial connection type. Each of the rotors comprises a permanent magnet, a rotor shaft, and a rotor iron core. The motor is characterized in that each rotor iron core is a cylindrical body, the surface of which is provided with a groove internally equipped with the corresponding permanent magnet; each rotor iron core is fixedly mounted on the corresponding rotor shaft; and a non-magnetic rotation-preventing bearing is mounted between every two rotors. According to the utility model, a speed changer is eliminated; a control system is simplified; the cost is saved; and the unit efficiency and motor operation reliability are improved.
Description
Technical field
The utility model belongs to a kind of oil field equipment, and particularly a kind of 12 utmost points are without the special-purpose permanent magnetism submersible electric motor of the full iron core screw pump of mouse cage.
Background technology
At present, the submersible electric machine with oil that is applied to oil extraction in oil field is mainly 2 pole three phase asynchronous motors, and its rotor is mouse-cage type structure, lag behind all the time rotating speed of stator rotating magnetic field of motor speed, and when the supporting application of existing oil production technology, there is following problem in it:
1,, when from the supporting application of core oil-immersed pump, because rotating speed is lower than synchronous speed, electric efficiency and power factor are on the low side.
During 2, with the supporting application of submersible screw pump, rotating speed is too high, must directly be reduced to the applicable rotating speed of screw pump by speed changer, if employing RHVC, because motor for a long time in low frequency operation state, easily makes again motor heat up, accelerate, thereby cause electrical fault.
Summary of the invention
The purpose of this utility model is just to overcome above-mentioned the deficiencies in the prior art, and provide a kind of 12 utmost points without the special-purpose permanent magnetism submersible electric motor of the full iron core screw pump of mouse cage, this motor has removed speed changer, simplified control system, save cost, improved unit efficiency and motor reliability of operation.
As above design, the technical solution of the utility model is: a kind of 12 utmost points are without mouse cage, the special-purpose permanent magnetism submersible electric motor of full iron core screw pump, comprise motor casing, motor head, motor cabinet and be arranged on stator punching, the rotor in motor casing, stator punching and rotor are multi-stage series formula, rotor comprises permanent magnet, armature spindle and rotor core, it is characterized in that: the cylinder that rotor core is surperficial trough of belt, and permanent magnet is housed in groove, rotor core is packed on armature spindle; Between every two rotors, nonmagnetic rotationally fixed bearing is housed.
Above-mentioned rotor core is fixed on armature spindle by key.
Said stator punching all adopts silicon steel sheet.
Above-mentioned rotor core is equipped with stainless steel sleeve cylinder outward.
Above-mentioned groove is circumferentially uniformly distributed along rotor core outer surface.
The utlity model has following advantage and good effect:
1. the design's rotor is without starting mouse cage.Rotor core by 45# steel make, the cylinder of surperficial trough of belt, with key and axle, fix.In rotor surface groove, adhesive permanent magnetism body, simple for structure.
2. adopt nonmagnetic rotationally fixed bearing, stator punching is all silicon steel sheet, has simplified and has laminated technique, has reduced cost.
3. adopt high-performance rare-earth permanent-magnetic body, can be for the high-temperature oil well of 150 ℃.
4. stator winding end is equipped with seal closure, can improve motor reliability of operation.
5. rotor core is equipped with stainless steel sleeve cylinder outward, can reduce mechanical loss, improves electric efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is that Fig. 1 analyses and observe part enlarged drawing.
Fig. 3 is the A-A profile of Fig. 2.
Embodiment
Below in conjunction with accompanying drawing and by specific embodiment, the utility model is further described, following examples are descriptive, are not restrictive, can not limit protection range of the present utility model with this.
As shown in the figure: a kind of 12 utmost points, without mouse cage, the special-purpose permanent magnetism submersible electric motor of full iron core screw pump, comprise motor head 1, motor casing 3, motor cabinet 10 and be arranged on stator punching 4, the rotor in motor casing, stator punching and rotor are multi-stage series formula.Rotor comprises permanent magnet 5, armature spindle 8 and rotor core 6, and rotor core is the cylinder of surperficial trough of belt 11, and permanent magnet is housed in groove, and rotor core is packed on armature spindle by key; Between every two joint rotors, non-magnetic rotationally fixed bearing 7 is housed.In order to improve motor reliability of operation, in the end of stator winding, seal closure 2 is housed.In order to reduce mechanical loss, improve electric efficiency, at rotor core, stainless steel sleeve cylinder 9 is housed outward.Said stator punching all adopts silicon steel sheet.
The rotor of the utility model design is without starting mouse cage.Rotor core by 45# steel make, the cylinder of surperficial trough of belt, with key and axle, fix.In rotor surface groove, adhesive permanent magnetism body, simple for structure.During supply frequency 50Hz, the rated speed of 12 utmost point AC permanent-magnet submersible electric motors is 500 revs/min, the frequency conversion scope of frequency converter effective use is 20～60Hz, and the rotating speed of submersible screw pump should be less than 200 revs/min, therefore 12 utmost point motors and vector frequency converter support the use and just in time make unit in optimal operational condition, can save speed changer, make the simple in structure, reliable of electric submersible screw pump, and can improve unit efficiency.
The above, it is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, every foundation technical spirit of the present utility model, to any simple modification made for any of the above embodiments, equivalent variations and modification, all belongs in the scope of technical solutions of the utility model.
Claims (5)
1. a utmost point is without mouse cage, the special-purpose permanent magnetism submersible electric motor of full iron core screw pump, comprise motor casing, motor head, motor cabinet and be arranged on stator punching, the rotor in motor casing, stator punching and rotor are multi-stage series formula, rotor comprises permanent magnet, armature spindle and rotor core, it is characterized in that: the cylinder that rotor core is surperficial trough of belt, and permanent magnet is housed in groove, rotor core is packed on armature spindle; Between every two rotors, nonmagnetic rotationally fixed bearing is housed.
2. 12 utmost points according to claim 1, without mouse cage, the special-purpose permanent magnetism submersible electric motor of full iron core screw pump, is characterized in that: above-mentioned rotor core is fixed on armature spindle by key.
3. 12 utmost points according to claim 1, without mouse cage, the special-purpose permanent magnetism submersible electric motor of full iron core screw pump, is characterized in that: said stator punching all adopts silicon steel sheet.
4. 12 utmost points according to claim 1, without mouse cage, the special-purpose permanent magnetism submersible electric motor of full iron core screw pump, is characterized in that: above-mentioned rotor core is equipped with stainless steel sleeve cylinder outward.
5. 12 utmost points according to claim 1, without mouse cage, the special-purpose permanent magnetism submersible electric motor of full iron core screw pump, is characterized in that: above-mentioned groove is circumferentially uniformly distributed along rotor core outer surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320121619.9U CN203774911U (en) | 2013-03-18 | 2013-03-18 | 12-pole squirrel-cage-free full-iron-core permanent-magnet submersible motor special for screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320121619.9U CN203774911U (en) | 2013-03-18 | 2013-03-18 | 12-pole squirrel-cage-free full-iron-core permanent-magnet submersible motor special for screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203774911U true CN203774911U (en) | 2014-08-13 |
Family
ID=51292060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320121619.9U Expired - Lifetime CN203774911U (en) | 2013-03-18 | 2013-03-18 | 12-pole squirrel-cage-free full-iron-core permanent-magnet submersible motor special for screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203774911U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114050696A (en) * | 2021-11-10 | 2022-02-15 | 榆林启迈油服科技有限公司 | Permanent magnet motor for high-temperature-resistant high-speed screw pump |
| CN115874988A (en) * | 2021-09-29 | 2023-03-31 | 中国石油天然气股份有限公司 | Small-diameter electric submersible screw pump oil production device |
-
2013
- 2013-03-18 CN CN201320121619.9U patent/CN203774911U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115874988A (en) * | 2021-09-29 | 2023-03-31 | 中国石油天然气股份有限公司 | Small-diameter electric submersible screw pump oil production device |
| CN114050696A (en) * | 2021-11-10 | 2022-02-15 | 榆林启迈油服科技有限公司 | Permanent magnet motor for high-temperature-resistant high-speed screw pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140813 |
|
| CX01 | Expiry of patent term |