Shaft sleeve device of high-voltage soft starter

Abstract

The invention discloses a shaft sleeve device of a high-voltage soft starter. The device comprises a flange, a flange seat and a shaft sleeve, the flange seat comprises a base plate and a mounting plate perpendicular to the base plate, and the base plate and the mounting plate are fixedly connected through at least one reinforcing rib; and a penetrating through hole is formed in the mounting plate, the shaft sleeve and the flange penetrate through the through hole to be connected, the flange and the mounting plate are detachably connected, a motor rotating shaft hole penetrates through the center of the shaft sleeve, and the interior of the shaft sleeve comprises a large end, a small end and a reducing section which is in smooth transition connection with the large end and the small end. The technical difficulties that the iron core can generate electromagnetic traction force, frictional resistance and the like when high voltage passes through the coil are fully considered and solved, the problem that the iron core of the electric reactor cannot be adjusted is solved, and the output voltage of the electric reactor can be stably adjusted.

Description

technical field [0001] The invention relates to the technical field of electrical equipment control, in particular to a shaft sleeve device for a high-voltage soft starter. Background technique [0002] In construction, metallurgy, mining, petrochemical, power generation and other industrial fields, high-power high-voltage motor equipment has been widely used. When the motor is started, the starting impulse current is very large, which will cause interference to the power grid and other loads, and even endanger the safe operation of the power grid. , In order to solve this problem, it is necessary to use various high-voltage soft-start methods and high-voltage soft-start equipment. High-voltage soft-start equipment can generally be divided into soft starter types such as liquid resistance, magnetic control, and thyristor. [0003] In practical industrial applications, the current relatively common soft start method is to use a reactor type soft start device. The principle is...

AI Technical Summary

Problems solved by technology

However, since the reactor is mainly composed of an iron core and a coil, and these two components are generally fixed parts, which cannot be moved or the movement range is small, the inductance value of the reactor is poorly adjustable. In addition, using this method for soft starting During the process, the voltage at the motor terminal will also drop, which will easily lead to insufficient starting torque, and a secondary impact may occur during the starting process. These shortcomings also greatly restrict the promotion of the reactive soft start method. Improvement of the reactor-type soft starter to solve the above problems, in order to facilitate the popularization and use of the reactor-type soft starter, and improve the economic benefits of industrial production

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