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Novel three-phase asynchronous motor with high starting torque

A three-phase asynchronous, starting torque technology, applied in the direction of asynchronous induction motors, electric components, electrical components, etc., can solve the problems of widely varying operating performance and uneven appearance, and achieve strong pertinence, large starting torque multiples, The effect of increasing the rotor resistance

Pending Publication Date: 2017-11-21
WOLONG ELECTRIC GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The motors of pumping units in the existing market have uneven shapes and operating performances.

Method used

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  • Novel three-phase asynchronous motor with high starting torque
  • Novel three-phase asynchronous motor with high starting torque
  • Novel three-phase asynchronous motor with high starting torque

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Embodiment Construction

[0024] The invention provides a novel high starting torque three-phase asynchronous motor, such as Figure 1 to Figure 4 As shown, the three-phase asynchronous motor for the high starting torque oil pumping unit includes a frame 10, a stator installed in the frame 10, and a rotor installed in clearance with the stator, and the rotor includes a rotating shaft 9, a rotor guide bar and a Rotor iron core 6 formed by coaxial lamination of rotor punching sheets. The rotor is fixedly mounted on the rotating shaft 9. End covers 5 are respectively provided at the front and rear ends of the frame 10. Bearings 3 are provided between the end cover 5 and the rotating shaft 9. , and the inner and outer sides of the bearing 3 are respectively provided with a bearing inner cover 4 and a bearing outer cover 2, the shaft extension end of the rotating shaft is set as a tapered structure 1, and the shaft extension end is provided with a rainproof disk 17 and a V-shaped oil seal 18, so The rainpro...

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Abstract

A novel three-phase asynchronous motor with a high starting torque comprises a stator and a rotor, wherein the stator is arranged in an engine base, the rotor and the stator are arranged in a clearance fit manner, the rotor comprises a rotation shaft, a rotor guide strip and a rotor core, the rotor core is formed by coaxially laminating rotor punching sheets, a shaft extending end of the rotation shaft is of a conical structure, a rainproof disc and a V-shaped oil sealing ring are arranged on the shaft extending end, a central through hole is formed in a core part of the rotor punching sheets, positioning key grooves are symmetrically formed in the central through hole, a rotor groove is formed in an external circumferential end surface of the rotor punching sheets and is arranged along a radial direction, the rotor groove comprises long rotor grooves and short rotor grooves, the long rotor grooves and the short rotor grooves are sequentially and alternatively arranged on the approximate external circumferential end surface of the whole rotor punching sheets at intervals, and in the rotor punching sheets on the same axis, the long rotor grooves and the short rotor grooves are arranged in a staggered way. A high-starting torque oil pumping machine employs the three-phase asynchronous motor, a mode that the long rotor grooves and the short rotor grooves are laminated at intervals is employed, the structural strength is improved, and the working requirements of high starting torque and high slip difference are met.

Description

technical field [0001] The invention belongs to the technical field of three-phase asynchronous motors, in particular to a novel high starting torque three-phase asynchronous motor. Background technique [0002] The working state of a three-phase asynchronous motor is generally divided into starting, running and braking. The main disadvantages of the existing three-phase asynchronous motors are large starting current and small starting torque. Therefore, when designing a three-phase asynchronous motor, it is hoped that its starting torque is large and the starting current is small. This is because the starting torque of the three-phase asynchronous motor is directly proportional to the rotor loss. It is better to have a larger rotor resistance when starting; but in order to improve efficiency, it is better to have a smaller rotor resistance after starting. The starting torque of a conventional three-phase asynchronous motor can be 1.8 to 2.0 times the rated torque accordin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K17/12H02K1/26H02K5/10H02K5/16H02K5/124
CPCH02K1/265H02K5/10H02K5/124H02K5/161H02K17/12
Inventor 李旭光刘阳安海峰杨文卓羊娟李琳琳谢晓龙谢超群张勇
Owner WOLONG ELECTRIC GRP CO LTD
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