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A Method for Improving the Insulation Performance of Large-scale Motors on Site

A large-scale motor and insulation performance technology, which is applied in the manufacture of motor generators, electromechanical devices, electrical components, etc., can solve the problems of long maintenance period, affecting production, and high cost

Active Publication Date: 2020-09-04
CSSC HUANGPU WENCHONG SHIPBUILDING COMPANY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Marine motors, especially main thruster motors, are usually large motors. For the drying of large motors, the existing method is to dismantle them from the site and send them to a professional repair unit for disintegration and drying in a drying room. This method has the problems of long maintenance period and high cost. , seriously affecting production

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  • A Method for Improving the Insulation Performance of Large-scale Motors on Site
  • A Method for Improving the Insulation Performance of Large-scale Motors on Site

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Embodiment Construction

[0022] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] This embodiment further illustrates the technical solution of the present invention by taking the main motor of side thruster for marine as an example, wherein the motor is a squirrel-cage asynchronous motor, and its working parameters are: C4W500LA6 Voltage: 380V Frequency: 50HZ Current: 2140A Power: 1140KW, This embodiment is mainly aimed at drying the stator winding of the squirrel-cage asynchronous motor. A method for improving the insulation performance of a large motor on site provided by the present invention includes:

[0024] S010, the current drying step, start the drying power supply, apply current to the winding inside the motor from the drying power su...

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Abstract

The present invention relates to a method for improving the insulation performance of a large-scale motor on site, comprising: S010, a current drying step, starting a drying power supply, applying a current to the winding inside the motor from the drying power supply, and the time for continuously applying the current is A hours; S020, Pass hot air through the upper tuyere of the motor, and discharge the hot air through the winding inside the motor from the lower tuyere; S030, pass hot air through the lower tuyere of the motor, and discharge the hot air through the winding inside the motor from the upper tuyere. In the present invention, under the condition that the motor is not disassembled, the electric current heating step and the hot air drying step are performed on the inner winding of the motor to realize drying inside the motor, thereby improving the insulation performance of the motor.

Description

technical field [0001] The invention relates to the field of motor insulation, in particular to a method for improving the insulation performance of a large motor on site. Background technique [0002] Marine motors, especially main thruster motors, are susceptible to moisture due to long-term operation at sea. When the motor is damp, its insulation resistance will decrease. If it is not handled in time, it will cause leakage or motor burnout. Therefore, it is necessary to monitor the insulation resistance value of the marine motor in real time. When the insulation resistance value of the motor is detected to be too low, it is necessary to stop the operation of the motor immediately and determine whether it is caused by damp. If the judgment result is that the insulation resistance of the motor is too low due to damp, the motor needs to be dried. [0003] Marine motors, especially side thruster main motors, are usually large motors. For the drying of large motors, the exist...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K15/12
CPCH02K15/125
Inventor 徐晓张革陈琳琳
Owner CSSC HUANGPU WENCHONG SHIPBUILDING COMPANY
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