Safety-increasing explosion-proof type variable-frequency adjustable-speed asynchronous motor for petroleum drilling winch

Abstract

The invention specifically provides a safety-increasing explosion-proof type variable-frequency adjustable-speed asynchronous motor for a petroleum drilling winch, and solves the problems of bad ventilation and heat radiation effects, high possibility of causing electric corrosion phenomenon, and impossibility of satisfying load requirements of high power and wide constant-power scopes of users in the existing electric motors. A draught fan is arranged above a full-steel-plate horizontal type engine base; a rain shielding device is arranged on the front side of the draught fan; an inward-concave type insulation front cover plate and a back cover plate are arranged at the two ends of the full-steel-plate horizontal type engine base; the insulation front end cover is provided with an NJ+HJ326ECM / C4 VA301 bearing, a front bearing cover and a front sealing ring; the back end cover is provided with an NU236 ECM / C4 bearing, a back bearing cover and a back sealing ring; a waist-shaped air outlet is formed in the back end cover; an air outlet housing is arranged in the waist-shaped air outlet; the material of a conducting bar of a rotor is pure copper T2; a conducting bar and an end bar of the rotor are in induction welding; the rotor punching material is 50WW470; and the stator punching material is cold rolling 50TW470.

Description

technical field [0001] The invention relates to an asynchronous motor, in particular to an increased safety and explosion-proof asynchronous motor with frequency conversion and speed regulation for an oil drilling drawworks. Background technique [0002] With the increasing demand for energy in countries around the world, land oil extraction is becoming more and more difficult, and land drilling is also developing in the direction of ultra-deep wells. Offshore oil resources contain more than 70% of the world's oil and gas resources, more than half of which are located in the deep sea, and the original production also accounts for about 30% of the total production. The water depth of an offshore platform is 300m, which is considered a deep-water well. At present, domestic offshore drilling platform manufacturing started relatively late, but after recent years of development, it has been rapidly improved, and the capacity is about 500m. [0003] In recent years, the domestic ...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems that the existing electric motors have poor ventilation and heat dissipation effects, are prone to electric corrosion, and cannot meet the load requirements of users with high power and wide constant power range, the invention provides an increased safety and explosion-proof frequency converter for oil drilling drawworks. speed asynchronous motor

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