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High-power, low-speed and positive-pressure type explosion-proof induction motor

An induction motor, high-power technology, applied in the direction of electric components, electrical components, electromechanical devices, etc., can solve the problems of poor cooling effect, large leakage, etc., achieve the effect of small friction loss, good self-lubrication, and solve cooling difficulties

Inactive Publication Date: 2016-02-24
WOLONG ELECTRIC NANYANG EXPLOSION PROTECTION GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a high-power low-speed positive pressure explosion-proof induction motor, which can solve the problems of large leakage and poor cooling effect of the high-power low-speed positive pressure explosion-proof induction motor

Method used

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  • High-power, low-speed and positive-pressure type explosion-proof induction motor
  • High-power, low-speed and positive-pressure type explosion-proof induction motor

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Embodiment Construction

[0013] Such as figure 1 and 2 As shown, the present invention includes a high-power low-speed positive-pressure explosion-proof induction motor, including a positive-pressure explosion-proof induction motor body, a sealing device and an air-to-air cooler device.

[0014] The sealing device is arranged at the shaft penetration part of the motor. In the shaft penetration part of the motor, there is a clearance fit between the cover plate 2 and the end cover 3 and the rotating shaft 1, leaving a gap of at least 1 mm to avoid the cover plate 2 and the end cover. Noise and vibration are caused by friction between the cover 3 and the shaft 1; and a sealing device composed of a spring ring 4 and a carbon ring 5 is provided between the cover plate 2 and the end cover 3, and the spring ring 4 is far away from the shaft 1. The carbon ring 5 seals the gap between the cover plate 2, the end cover 3, the spring ring 4 and the rotating shaft 1. Since the setting of the spring ring 4 plays...

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Abstract

The invention discloses a high-power, low-speed and positive-pressure type explosion-proof induction motor. The high-power, low-speed and positive-pressure type explosion-proof induction motor comprises a positive-pressure type explosion-proof induction motor body; a cover plate and an end cover are in clearance fit with a rotation shaft; a sealing device composed of a spring ring and a carbon ring is arranged between the cover plate and the end cover; and the top of the motor is provided an air-cooling cooler device. According to the high-power, low-speed and positive-pressure type explosion-proof induction motor of the invention, the spring ring and the carbon ring are adopted to seal a shaft penetration portion between a stator and a rotor, and the problem of leakage can be solved; a first set of forced air-cooling equipment is arranged at the upper part of the motor body so as to extract heat generated by the motor; extracted heat is cooled through a cooling tube and then enters a fan, so that internal circulation cooling can be performed on the fan; a second set of forced air-cooling equipment is adopted to extract air, and the air can assist in exhausting internal heat of the fan by means of the cooling tube, wherein the internal heat is exchanged through the cooling tube; and therefore, the cooling tube can continuously perform heat transfer, and the cooling of the motor can be completed finally.

Description

technical field [0001] The invention relates to the technical field of positive pressure explosion-proof induction motors, in particular to a high-power low-speed positive pressure explosion-proof induction motor. Background technique [0002] At present, there are two main reasons why the high-power low-speed positive pressure explosion-proof induction motor cannot be realized. First, due to the large volume and large leakage of positive pressure gas, the traditional seal cannot meet the design requirements. Second, due to the large power loss and the low speed, the cooling capacity is reduced, which cannot meet the temperature rise requirements. [0003] First of all, the leakage of positive pressure gas is large, and the main leakage part is the shaft penetration part between the stator and the rotor. Usually, low-power positive pressure explosion-proof motors are sealed with felt, but the felt is relatively loose, and it is vulnerable to the environment for a long time. ...

Claims

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Application Information

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IPC IPC(8): H02K5/136H02K9/18
CPCH02K5/136H02K9/18H02K2205/09
Inventor 于喜伟吴宣东刘彦华乔建伟杜振坤金红刘玉宝张运生
Owner WOLONG ELECTRIC NANYANG EXPLOSION PROTECTION GRP CO LTD
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