Rotor structure of submersible motor

Abstract

The invention belongs to the technical field of submersible motors, and particularly relates to a rotor structure of a submersible motor. The rotor structure of the submersible motor comprises a rotor chip and rotor conducting bars, wherein a plurality of flat grooves are evenly distributed from the central axis to the circumferential direction of the rotor chip, the two ends of each flat groove are semi-circles of the same diameter, the middle of each flat groove is rectangular or square, and the diameter of the semi-circles at the two ends of each flat groove is equal to the width of the rectangle in the middle. The shape of the section of each rotor conducting bar is as the same as that of the flat grooves in the rotor chip, and each rotor conducting bar penetrates into each flat groove of the rotor chip. The shape of a punching groove of a rotor of an original submersible motor is changed, the manufacturing difficulty of the rotor is lowered, the electromagnetic performance of the submersible motor and the production efficiency of products are improved, the production cost is lowered, and therefore the rotor structure of the submersible motor has good practical value and broad market prospects.

Description

technical field [0001] The invention belongs to the technical field of submersible motors, and in particular relates to a rotor structure of a submersible motor. Background technique [0002] At present, my country's submersible pump industry has developed rapidly in recent years. Due to its simple structure, convenient installation and maintenance, advanced performance and many other advantages, it has been widely used in industry, agriculture, mining, urban construction, chemical industry, petroleum exploration and other fields. It is an ideal tool for underground water extraction, water supply and drainage, and has become an indispensable tool for general mechanical products in modern life. As an important part of submersible electric pumps, submersible motors are becoming more and more powerful and widely used. However, in the process of motor manufacturing, the manufacture of slender and high-power motor rotors is a difficult process, and the production efficiency is lim...

AI Technical Summary

Problems solved by technology

As an important part of submersible electric pumps, submersible motors are becoming more and more powerful and widely used. However, in the process of motor manufacturing, the manufacture of slender and high-power motor rotors is a difficult process, and the production efficiency is limited. The performance of the motor cannot be guaranteed. Under normal circumstances, the small-power submersible motor adopts a cast aluminum rotor structure. Due to the limitation of the outer diameter of the high-power submersible motor, the length and diameter of the motor are relatively large, and the motor mostly adopts a squirrel-cage rotor with copper bars. However, the most common punching structure is the pear-shaped punching groove structure. Because the straightness of the pear-shaped guide bar is not good and there is uneven stress, the process of the rotor passing through the guide bar becomes very difficult, which consumes a lot of man-hours and seriously Restricted the production efficiency of the product

In another circular punching structure of the rotor, the manufacture of the round bar-shaped guide bar and the threading process of the rotor are simple, but because the circular punching structure has a great impact on the magnetic circuit of the motor rotor, it also affects the performance of the product. Restricts the technical level of the product

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