High thermal conductivity insulating structure and manufacturing method thereof

Abstract

The invention discloses a high-heat-conductivity insulating structure and a manufacturing method thereof. The high-heat-conductivity insulating structure comprises an iron core and an electromagnetic wire embedded in the iron core, a heat conducting film, a mica tape and an alkali-free glass tape are sequentially arranged between the electromagnetic wire and the iron core, an opening of the iron core is sealed by a slot wedge, and an inner gap of the iron core is provided with dipping varnish by means of dipping. The high-heat-conductivity insulating structure has the advantages that due to the fact that the heat conducting film, the mica tape and the alkali-free glass tape are sequentially arranged between the electromagnetic wire and the iron core to form a heat conducting passage in the whole insulating structure, internal heat conducting efficiency of a motor is improved, heat in the motor can be transferred to a cooling medium more quickly, and accordingly operation rise of the motor can be lowered to realize cooling of an insulation operation environment so as to prolong insulation service life of the motor.

Description

technical field [0001] The invention relates to the technical field of motor design, in particular to a high thermal conductivity insulation structure suitable for medium and high voltage motors and a manufacturing method thereof. Background technique [0002] The insulation system is an important part of the motor, its performance and state determine the safety and life of the motor in operation. During operation, the motor insulation system is subjected to thermal (Thermal), electrical (Electrical), environmental (Ambient) and mechanical (Mechanical) stress for a long time, which is called TEAM stress. Thermal stress is recognized as the cause of gradual deterioration of insulation and eventually failure. factor. Some studies have shown that for every 10°C increase in the operating temperature of an insulation, its thermal life is roughly halved. Thermal stress comes from the operating temperature of the winding, which is preferably from the I in the copper conductor 2 ...

AI Technical Summary

Problems solved by technology

[0003] In order to improve the insulation life of the motor, insulating materials with higher temperature resistance than the motor's operating temperature are often used in the design process. Although this method can improve the life of the motor insulation, it also increases the manufacturing cost of the motor. More importantly, The characteristics of the insulating material determine the upper limit of its temperature resistance level, and this method cannot be implemented when the design operating temperature of the motor reaches about 200 degrees Celsius

It can be seen that not only the price of insulating materials with high performance will increase, but also the requirements for their use will increase. Therefore, this method not only increases the manufacturing cost of the product, but also improves the manufacturing process requirements.

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