CN102570756A - Self-start permanent-magnet synchronous submersible motor - Google Patents
Self-start permanent-magnet synchronous submersible motor Download PDFInfo
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- CN102570756A CN102570756A CN2010105999432A CN201010599943A CN102570756A CN 102570756 A CN102570756 A CN 102570756A CN 2010105999432 A CN2010105999432 A CN 2010105999432A CN 201010599943 A CN201010599943 A CN 201010599943A CN 102570756 A CN102570756 A CN 102570756A
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Abstract
The invention discloses a self-start permanent-magnet synchronous submersible motor. The motor comprises a rotor, a stator and a casing, wherein the rotor is mounted in the stator through a bearing; the stator is mounted in the casing; the rotor comprises a permanent magnet, squirrel cage guide strips, a rotor shaft and a rotor core; a permanent magnet is embedded into the rotor core; a plurality of grooves are formed on the outer surface of the rotor core in the length direction, and the squirrel cage guide strips are embedded into the grooves to form an asynchronous starting rotor; and the rotor core is fixedly mounted on the rotor shaft. In the invention, the self-start design manner is adopted, a frequency converter is omitted, and a control system is simplified, so that the cost is saved; a stator winding is designed into a multipolar motor winding, of which the speed can be regulated within 1500-500 turns per minute; and a speed reducer is added to realize speed regulation within a larger range and lower velocity, so as to adapt to the velocity of a submersible screw pump.
Description
Technical field
The present invention relates to the oil field equipment submersible electric machine with oil, especially a kind of self-starting permanent-magnet synchronous submersible electric motor.
Background technology
At present; The submersible electric machine with oil that is applied to recover the oil in the oil field mainly is two pole three phase asynchronous motors; Its rotor is the mouse-cage type structure, lag behind all the time rotating speed of stator rotating magnetic field of motor speed, and there are two kinds of problems in it when the supporting application of existing DP technology: during one, with the supporting application of centrifugal oil-immersed pump; Because of rotating speed is lower than synchronous speed, electric efficiency and power factor are on the low side; During two, with supporting applications of submersible screw pump, rotating speed is too high, is difficult to directly be reduced to the rotating speed that screw pump adapts to through decelerator, if adopt RHVC, because of motor is in the low frequency operation state for a long time, is prone to make the electric machine temperature rise quickening again, causes electrical fault.Because the needs of oil field oil recovery operating mode, the oil production equipment technical development improves constantly, and the someone proposes to replace asynchronous submersible electric machine with oil with rare earth permanent-magnet synchronization motor, and electric efficiency and power factor are significantly improved.But need frequency converter to carry out soft start and frequency control.
Summary of the invention
Problem to prior art exists the object of the present invention is to provide a kind of same leg speed, but does not need energy-conservation, the self-starting permanent-magnet synchronous submersible electric motor of practicing thrift cost of frequency converter.
For realizing above-mentioned purpose, self-starting permanent-magnet synchronous submersible electric motor of the present invention comprises rotor, stator and casing; In stator, stator is installed in the casing, wherein rotor by Bearing Installation; Rotor comprises permanent magnet, mouse cage sliver, armature spindle, rotor core, and rotor core is embedded with permanent magnet, the offering several trough and in groove, inlay the mouse cage sliver along its length direction at outer surface of rotor core; Form the asynchronous starting rotor, rotor core is fixedly mounted on the armature spindle.
Further, said rotor core supports with alignment bearing.
Further, several said grooves circumferentially evenly distributing along said rotor core outer surface.
Further, said permanent magnet adopts the tangential assembling form to install.
The present invention adopts the design of self-starting, removes frequency converter, and simplified control system is practiced thrift cost.Stator design multipolar dynamo winding, speed speed governing between 1500-500 rev/min, the acceleration and deceleration device can be realized the speed governing speed lower with realization in a big way again, adapts to the speed of submersible screw pump.
Description of drawings
Fig. 1 is stator and rotor sructure first schematic cross-section among the present invention;
Fig. 2 is stator and rotor sructure second schematic cross-section among the present invention.
Embodiment
Like Fig. 1, shown in Figure 2, self-starting permanent-magnet synchronous submersible electric motor of the present invention is made up of stator assembling, rotor assembling, bearing assembling and last lower contact assembling.In stator, stator core is fixed in the casing 1 rotor by bearing fixing.Be provided with stator coil 3 in the stator punching 2,
Rotor is made up of permanent magnet 6, mouse cage sliver 4, armature spindle, rotor core 5; Rotor core 5 is embedded with permanent magnet 6; Permanent magnet 6 employing tangential assembling forms are installed, rotor core 5 offer several trough at outer surface along its length direction, each groove circumferentially evenly distributes along rotor core 5 outer surfaces; Be inlaid with mouse cage sliver 4 in the groove, to form the asynchronous starting rotor.Rotor core 5 is fixed on the armature spindle 7, supports with alignment bearing between each section rotor core.The present invention is according to the operation principle of synchronous machine; Adopt Nd-Fe-B rare earth permanent magnetic material to give rotor-exciting; Traditional synchronous machinery excitation winding and field power supply structure have been changed; And permanent magnet 6 is placed internal rotor, add 4 combinations of mouse cage sliver, realize the self-startup ability that starts without frequency converter.
The present invention adopts the design of self-starting, removes frequency converter, and simplified control system is practiced thrift cost.Stator design multipolar dynamo winding, speed speed governing between 1500-500 rev/min, the acceleration and deceleration device can be realized the speed governing speed lower with realization in a big way again, adapts to the speed of submersible screw pump.
The stator outer diameter size of self-starting permanent-magnet synchronous submersible electric motor of the present invention is by the decision of oil well casing internal diameter, and 5 inch semicanal stator cage external diameters are 114mm, and it is multipole that design of Windings becomes, and realizes low speed.Rotor core 5 is embedded in the permanent magnet 6 of corresponding number of poles, uses the tangential plug-in type, overcomes the thin and long difficult point in rotor week footpath, makes full use of the rotor confined space, at rotor core 5 cylindricals fluting, puts into mouse cage sliver 4, realizes asynchronous starting synchronous operation.
Adopted technique scheme, patent of the present invention has following evident characteristic:
1. the permanent magnetism oil submersible synchronous motor adopts the mode of self-starting, removes frequency converter, simplified control system, and motor can directly connect power supply, need not other auxiliary equipments.Practice thrift the purchase cost expense of frequency converter.
2. stator winding is designed to multipolely, and speed is adjustable between 1500-500 rev/min.The acceleration and deceleration device can be realized any speed governing again.
3. the rotor assembling is on the basis of common submersible electric machine with oil, opens groove at rotor yoke, embeds permanent magnet 6, though motor is more elongated, in conjunction with common electric machine and submersible electric machine with oil assembling, assemble ability strengthens.
4. this design self-starting permanent-magnet synchronous submersible electric motor had both had the efficient height, and power factor is high, and the characteristics of the permanent magnet synchronous motor that the motor nominal torque is big possess programme of cage asynchronous electric motor starting performance characteristics again, combine the advantage of two kinds of motors.
Claims (4)
1. self-starting permanent-magnet synchronous submersible electric motor comprises rotor, stator and casing, rotor by Bearing Installation in stator; Stator is installed in the casing, it is characterized in that, rotor comprises permanent magnet, mouse cage sliver, armature spindle, rotor core; Rotor core is embedded with permanent magnet; Offering several trough and in groove, inlay the mouse cage sliver along its length direction at outer surface of rotor core forms the asynchronous starting rotor, and rotor core is fixedly mounted on the armature spindle.
2. self-starting permanent-magnet synchronous submersible electric motor as claimed in claim 1 is characterized in that said rotor core supports with alignment bearing.
3. self-starting permanent-magnet synchronous submersible electric motor as claimed in claim 1 is characterized in that, several said grooves circumferentially evenly distribute along said rotor core outer surface.
4. self-starting permanent-magnet synchronous submersible electric motor as claimed in claim 1 is characterized in that, said permanent magnet adopts the tangential assembling form to install.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105999432A CN102570756A (en) | 2010-12-22 | 2010-12-22 | Self-start permanent-magnet synchronous submersible motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105999432A CN102570756A (en) | 2010-12-22 | 2010-12-22 | Self-start permanent-magnet synchronous submersible motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102570756A true CN102570756A (en) | 2012-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105999432A Pending CN102570756A (en) | 2010-12-22 | 2010-12-22 | Self-start permanent-magnet synchronous submersible motor |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104022584A (en) * | 2014-06-26 | 2014-09-03 | 唐山远洋潜水电泵有限公司 | Sectional butt-joint submersible motor |
| CN104539067A (en) * | 2014-12-05 | 2015-04-22 | 湖北西浦电机科技有限责任公司 | High-power-mass-rate direct-drive permanent-magnet synchronous motor of submersible progressing cavity pump |
| CN104868677A (en) * | 2015-06-26 | 2015-08-26 | 山东颜山泵业有限公司 | Dipolar permanent magnet synchronous submersible electric motor |
| CN105201799A (en) * | 2014-09-09 | 2015-12-30 | 赵锡寰 | Submerged oil pump unit provided with downhole drive conversion device |
| CN106712341A (en) * | 2015-08-03 | 2017-05-24 | 江苏华源防爆电机有限公司 | Flameproof self-starting permanent magnet synchronous motor |
| CN111049344A (en) * | 2019-12-13 | 2020-04-21 | 陈虎威 | High-efficient radiating inner rotor direct drive formula PMSM |
| CN113517767A (en) * | 2021-04-21 | 2021-10-19 | 沈阳工业大学 | Slender small-diameter low-speed large-torque submersible permanent magnet motor |
| GB2539802B (en) * | 2013-11-15 | 2022-02-23 | Coreteq Systems Ltd | Line start permanent magnet motor using a hybrid rotor |
| GB2537276B (en) * | 2013-11-15 | 2022-04-20 | Coreteq Systems Ltd | Line start permanent magnet motor using a modular rotor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2282745Y (en) * | 1996-11-26 | 1998-05-27 | 大庆石油管理局潜油电泵技术服务公司 | Rare-earth permanent-magnet submersible electric machine |
| CN2653764Y (en) * | 2003-10-31 | 2004-11-03 | 上海海洲微型电机制造有限公司 | Permanent magnet synchronous motor rotor |
| CN101873043A (en) * | 2010-07-14 | 2010-10-27 | 天津驰达电机有限公司 | Asynchronous starting and permanent magnet synchronous submersible pump motor |
-
2010
- 2010-12-22 CN CN2010105999432A patent/CN102570756A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2282745Y (en) * | 1996-11-26 | 1998-05-27 | 大庆石油管理局潜油电泵技术服务公司 | Rare-earth permanent-magnet submersible electric machine |
| CN2653764Y (en) * | 2003-10-31 | 2004-11-03 | 上海海洲微型电机制造有限公司 | Permanent magnet synchronous motor rotor |
| CN101873043A (en) * | 2010-07-14 | 2010-10-27 | 天津驰达电机有限公司 | Asynchronous starting and permanent magnet synchronous submersible pump motor |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2539802B (en) * | 2013-11-15 | 2022-02-23 | Coreteq Systems Ltd | Line start permanent magnet motor using a hybrid rotor |
| GB2537276B (en) * | 2013-11-15 | 2022-04-20 | Coreteq Systems Ltd | Line start permanent magnet motor using a modular rotor |
| CN104022584A (en) * | 2014-06-26 | 2014-09-03 | 唐山远洋潜水电泵有限公司 | Sectional butt-joint submersible motor |
| CN105201799A (en) * | 2014-09-09 | 2015-12-30 | 赵锡寰 | Submerged oil pump unit provided with downhole drive conversion device |
| CN104539067A (en) * | 2014-12-05 | 2015-04-22 | 湖北西浦电机科技有限责任公司 | High-power-mass-rate direct-drive permanent-magnet synchronous motor of submersible progressing cavity pump |
| CN104868677A (en) * | 2015-06-26 | 2015-08-26 | 山东颜山泵业有限公司 | Dipolar permanent magnet synchronous submersible electric motor |
| CN106712341A (en) * | 2015-08-03 | 2017-05-24 | 江苏华源防爆电机有限公司 | Flameproof self-starting permanent magnet synchronous motor |
| CN111049344A (en) * | 2019-12-13 | 2020-04-21 | 陈虎威 | High-efficient radiating inner rotor direct drive formula PMSM |
| CN113517767A (en) * | 2021-04-21 | 2021-10-19 | 沈阳工业大学 | Slender small-diameter low-speed large-torque submersible permanent magnet motor |
| CN113517767B (en) * | 2021-04-21 | 2024-01-26 | 沈阳工业大学 | Slender small-diameter low-speed high-torque submersible permanent magnet motor |
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Application publication date: 20120711 |