Rectangular hollow copper wire coil tube with unequal wall thicknesses

Abstract

The invention proposes a rectangular hollow copper wire coil tube with unequal wall thicknesses. The rectangular hollow copper wire coil tube with unequal wall thicknesses comprises a hollow tube, wherein the hollow tube has a rectangular cross section, and the thickness of a tube wall of a long edge of the hollow tube is different from the thickness of a tube wall of a short edge of the hollow tube. The rectangular hollow copper wire coil tube with unequal wall thicknesses, proposed according to the embodiment of the invention, is made of a moving core head used for the rectangular hollow copper wire coil tube with unequal wall thicknesses, an ultra-long wire copper tube can be obtained, a product has the characteristics of high size precision, smooth inner and outer surfaces, high voltage resistance, long length, large size and the like, a cooling effect can be improved, the smooth inner hole surface is difficult to get scaling, the working condition of a large-size machine set can be improved, and the service lifetime of the large-size machine set is prolonged.

Description

technical field [0001] The invention relates to the technical field of generators, in particular to a rectangular unequal wall thickness hollow copper wire coil. Background technique [0002] Rectangular unequal wall thickness hollow copper wire coil is a hollow copper wire with a rectangular shape and a rectangular inner hole. It is mainly used in various high-efficiency generator rotor winding coils in the power industry. [0003] At present, the main production principle of similar products is to stretch the outer mold of the circular tube with the lining core of the moving core head to the appropriate size of the circular tube, and then draw the copper wire with a rectangular shape and a rectangular inner hole by empty drawing. . Due to the production method of air drawing, the inner and outer surfaces of the copper wire products are rough, which reduces the flow rate of the cooling medium, thereby affecting the cooling effect of the motor. With the method of pulling, ...

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Problems solved by technology

Due to the production method of air drawing, the inner and outer surfaces of the copper wire products are rough, which reduces the flow rate of the cooling medium, thereby affecting the cooling effect of the motor, and the inner wall of the copper pipe of the wire is easy to scale, which reduces the service life of the motor; The method of pulling, the material of the product is loose, the geometric size of the product is too large, and the pressure it bears is small. When the high-strength and high-efficiency motor is working, the rotor coil is easy to leak, which affects the use of the motor.

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