Steam and power dual-power-drive fan structure capable of achieving automatic switching

Abstract

The invention discloses a steam and power dual-power-drive fan structure capable of achieving automatic switching. The problems that a fan drive structure is complex, single gas source drive or motordrive is adopted, at most of time, normal running needs cannot be met, and normal production is affected are solved. Two permanent magnet couplings are selected according to the actual industry and mining, when the permanent magnet couplings work, a controller controls an executor motor to work, an output shaft of the executor motor rotates and drives a pushing disc to rotate through a swing rod and a connecting rod, a pushing convex strip slides over a convex block from thin to thick, a sliding sleeve and a shaft sleeve are pushed to move in the direction away from the pushing disc, a permanent magnet disc gets close to a conductor disc, the air gap between the conductor disc and the permanent magnet disc is reduced, a steam turbine output shaft or electric motor output shaft can drive afan rotating shaft to rotate, the controller controls the rotation angle of the output shaft of the executor motor to achieve output torque adjusting between 0 and 100%, and engaging and disengaging between a steam turbine and a fan and between an electric motor and the fan can be achieved.

Description

technical field [0001] The invention relates to a blower fan, more specifically, it relates to a structure of a blower fan driven by steam and electricity dual powers that can be automatically switched. Background technique [0002] my country's thermal power generation accounts for 70% of the country's power generation, and industrial furnaces are also widely used in various industries such as glass, metal, and building materials. Fans are used as auxiliary machines for ventilation and drafting of boilers, industrial kilns, and drying furnaces. Generally, the fans and induced draft fans of large-scale power plant boilers and industrial kilns are usually driven by electricity, and fans become auxiliary machines that consume a large amount of power. In order to reduce power consumption, under the condition of rich steam, it is driven by steam turbine, which will greatly reduce the power consumption rate. The steam-driven fan has good economic benefits in practical applicatio...

AI Technical Summary

Problems solved by technology

[0003] The present invention overcomes the problem that the driving structure of the fan is complex, and the single air source or motor drive cannot meet the normal operation requirements and affect the normal production in many cases, and provides an automatic switchable steam and electric dual power drive fan structure, The driving structure of the fan is simple, and the power to drive the fan can be automatically switched between the steam turbine and the motor, which can meet the normal operation requirements of the fan under different conditions and avoid the influence of the fan on the production system due to power problems

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