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Low voltage high-power threephase asynchronous motor

A three-phase asynchronous motor technology, applied in asynchronous induction motors, electric components, electrical components, etc., can solve the problems of low-voltage high-power three-phase asynchronous motors, poor heat dissipation capacity of motors, single bearing structure, etc., to ensure operating efficiency and smooth operation, improved heat dissipation performance, and reasonable effect of stator winding

Inactive Publication Date: 2010-06-30
SEC ELECTRIC MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, this type of motor has the following defects: (1) There is no fan inside the motor, and a single air passage structure is adopted, so the internal heat dissipation capability of the motor is poor, the temperature rises, and the insulation life is short; (2) the bearing structure is single, and high operating noise
Therefore, the use of this type of low-voltage high-power three-phase asynchronous motor is restricted

Method used

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  • Low voltage high-power threephase asynchronous motor

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Embodiment Construction

[0022] Such as Figure 1~3 As shown, the front end cover 8 and the rear end cover 13 are installed at both ends of the machine base 1 through bolts, the stator 10 and the rotor 11 are installed in the machine base 1, and the stator 10 is fixed on the front end cover 8 and the rear end cover 13 through bolts. above; the stator 10 is connected with a terminal box 17 through bolts; the rotor 11 is installed in the frame 1, and its front and rear ends are respectively installed on the front end cover 8 and the rear end cover 13 through the front bearing 5 and the rear bearing 14, and the front bearing 5 and The rear bearing 14 is respectively fixed by the bearing outer cover 4, the bearing inner cover 6 and the shaft retaining ring 2; the rotor 11 is equipped with an inner fan 12 and an outer fan 15, and the inner fan 12 is located inside the machine base 1, and is installed by a shrink-fit process. The shaft is fixed with the retaining ring 2; the outer fan 15 is installed at the...

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Abstract

The invention relates to a low voltage high-power three-phase asynchronous motor. According to the technical scheme of the invention, a front end cover and a back end cover are installed at both ends of a motor base, a stator is installed in the motor base, and is fixed on the front end cover and the back end cover, the stator is connected with a junction box, a rotor is installed in the motor base, the front end and the back end of the rotor are installed on the front end cover and the back end cover by a front bearing and a back bearing, the front bearing and the back bearing are fixed by an external bearing cover, an internal bearing cover and a bearing retainer ring, an external fan is installed at the tail end of the rotor and is fixed by the bearing retainer ring, an external fan shield is fixed on the back end cover, and a key is installed in a key slot at the front of the rotor. The invention has the characteristics that the stator punching is made of silicon steel, a stator winding is made by adopting modified high strength polyester paint to coat circular copper wires in double-layer lap wound embedding mode, and the end part of the stator winding is coated by epoxy glass fiber tapes. The invention has reasonable stator winding, good safety, skillful complete motor structure, good heat dispersion, low running noise, high intensity and safe and smooth operation.

Description

technical field [0001] The invention belongs to the technical field of motors, and in particular relates to a low-voltage high-power three-phase asynchronous motor. Background technique [0002] Y2 series (IP54) three-phase asynchronous motors (center height H63~355) have unique appearance and obvious energy saving characteristics. With the internationalization of motor manufacturing, the development and production of low-voltage high-power motors in my country has gradually matured, and they play an important role in many industrial fields such as mining, petroleum, chemical industry, electric power, and water supply and drainage. Such an electric motor needs to change the power that can only be realized under high voltage into that it can also be realized under low voltage. In the prior art, this type of motor has the following defects: (1) There is no fan inside the motor, and a single air passage structure is adopted, so the internal heat dissipation capability of the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K17/12H02K3/04H02K5/24H02K5/20H02K9/06H02K5/16
Inventor 王建裕
Owner SEC ELECTRIC MACHINERY
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