Stator structure of submersible motor and manufacturing method thereof

Abstract

The invention discloses a manufacturing method of a stator structure of a submersible motor, wherein the stator structure comprises a stator case, an iron core, a stator winding and a winding lead wire; the upper end and the lower end of the stator case are respectively welded with an upper flange end ring and a lower flange end ring in a sealing way and also fixed with a stainless steel shielding sleeve and a lead wire sealing device that is used for sealing and wrapping the edge of the winding lead wire; insulating fluid sealant is filled in the clearances among the stator case, the stainless steel shielding sleeve, the upper flange end ring, the lower flange end ring, the iron core and the stator winding. The method for manufacturing the stator structure of the submersible motor includes the following sequential steps of manufacturing the stator case and the stainless steel shielding sleeve by rolling according to the argon arc welding means; manufacturing the stator winding and the iron core; lathing the upper flange end ring, the lower flange end ring and a small V-shaped convex ring; assembling, sealed-welding and reshaping; preparing the insulating fluid sealant; filling the insulating fluid sealant; and sealing. The stator structure has the benefits of complete sealing of the stator winding of the motor, high watertight and insulating performances, simple structure and safe and reliable operation.

Description

technical field [0001] The invention relates to a motor stator structure and a manufacturing method thereof, in particular to a submersible motor stator structure used in a submersible motor and a manufacturing method thereof. Background technique [0002] In the prior art, the traditional submersible motor stator includes a stator shell, iron core, stator winding and winding lead-out wires. There are three types of structure: dry type, oil-filled type and water-filled type; dry type submersible motor and oil-filled submersible type The motor usually uses a mechanical seal to isolate the inside and outside of the motor, and the internal winding of the motor does not touch the external liquid, so as to protect the insulation performance of the motor stator winding; Therefore, the mechanical seal must be reliable. Once the mechanical seal fails, the insulation of the motor winding will be damaged immediately. The life of the motor winding insulation depends largely on the qual...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a completely sealed motor stator winding, which can improve the water-resistant insulation performance of the motor stator winding, and can overcome the fact that the life of the motor winding insulation of dry-type submersible motors and oil-filled submersible motors depends largely on Due to the quality and service life of the mechanical seal, the complex structure of the motor, and the shortcomings of large mechanical losses, it can also avoid the shortcomings of the water-filled submersible motor winding slot full rate, large motor volume, low efficiency, and high manufacturing cost. The structure is simple and safe to use Reliable submersible motor stator structure and manufacturing method thereof

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