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Double-speed high-voltage explosion-proof three-phase asynchronous motor with non-double-pole design

A three-phase asynchronous, explosion-proof technology, applied in asynchronous induction motors, electrical components, electromechanical devices, etc., can solve the problems of high temperature rise and low starting performance of rotating motors, avoid motor harmonic magnetic fields, and ensure stirring quality , to meet the effect of normal production needs

Active Publication Date: 2014-02-19
WOLONG ELECTRIC NANYANG EXPLOSION PROTECTION GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the field of electric motors, the stator windings of two-speed motors are all connected in a single way, but when the motor capacity is large, the use of a single way connection will cause production problems during use, especially the above-mentioned high temperature rise of the rotating motor and poor starting performance. The low-level problem cannot be overcome by the single-way connection winding of the motor, so how to use a multi-way connection two-speed double-winding motor is an urgent problem to be solved

Method used

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  • Double-speed high-voltage explosion-proof three-phase asynchronous motor with non-double-pole design
  • Double-speed high-voltage explosion-proof three-phase asynchronous motor with non-double-pole design
  • Double-speed high-voltage explosion-proof three-phase asynchronous motor with non-double-pole design

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Embodiment Construction

[0021] Such as Figure 5 As shown, a double-speed high-voltage explosion-proof three-phase asynchronous motor adopts non-double pole design, which consists of stator 3, rotor 4, bearing device 1, end cover 9, and end cover 8. The rotor 4 is placed in the front and rear two bearing devices 1, the bearing device 1 is connected with the front and rear end covers 9 by bolts respectively, the front and rear end covers 9 are connected with the stator 3 by bolts, the end cover 8 and the end cover 9 are connected by bolts, the end cover 9, the outer fan 11, The stator 3 forms an open-loop external air path; the rotor 4 is composed of a rotor iron core, a squirrel cage, a shaft, a key, an inner fan 10, an air guide tube 13, and a balance ring, the squirrel cage is placed on the rotor iron core, and the rotor iron The core and the shaft adopt an interference fit and are connected by a key. The air guide tube 13, the balance ring, and the inner fan 10 all adopt an interference fit with t...

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Abstract

The invention discloses a double-speed high-voltage explosion-proof three-phase asynchronous motor with a non-double-pole design. The motor comprises a stator, a rotor, bearing units and an end cap, wherein the rotor is arranged on the front and rear bearing units, the difference between the groove number of the stator and the groove number of the rotor is four times that of the number of less-pole pairs, stator windings comprise a more-pole winding and a less-pole winding, the two windings are distributed up and down and wound around a stator core, and each winding employs two isolator poles for homopolar connection; and an inclined slot is formed in the rotor, pads are respectively arranged between the top and bottom of the slot and a coil, and the slot top is fixed via a slot wedge. According to the invention, a double-winding structure is arranged in the stator core to avoid a harmonic-wave magnetic field of the motor, and ensure that the motor can satisfy electrical performance and that the two windings are placed on the iron core; and further, the different amount of poles in the non-double-pole manner can run stably, thereby ensuring the stirring quality of a blender, and satisfying normal production requirements.

Description

technical field [0001] The invention relates to the technical field of high-voltage motors, in particular to a double-speed high-voltage explosion-proof three-phase asynchronous motor with non-double pole design. Background technique [0002] In the fields of coal mining and petrochemical industry, high-voltage two-speed flameproof three-phase asynchronous motors are required, and the double-pole type is usually used, because the double-pole high-voltage two-speed flameproof three-phase asynchronous motor has a mature theoretical system , there is a reliable design method in electromagnetic design. [0003] There are great difficulties in the choice of slot fit and pitch for non-double-extreme high-voltage double-speed flameproof three-phase asynchronous motors. It is necessary to choose a suitable slot fit and pitch to meet both the performance of less-pole operation and the multi-pole operation. Extreme performance. In the field of petrochemical industry, double-extr...

Claims

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Application Information

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IPC IPC(8): H02K17/14
Inventor 田儒彰朱妤吕朝帅仇佳庆赵岩郭大江王鑫成杨翠姚金艳
Owner WOLONG ELECTRIC NANYANG EXPLOSION PROTECTION GRP CO LTD
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