Brake device for rotor of suction fan

Abstract

The invention discloses a brake device for a rotor of a suction fan. The brake device for the rotor of the suction fan comprises a main body module and an adjustment module mounted on the main body module. The main body module comprises force arms, a tensioning screw rod, force arm positioning pins and a base. The adjustment module comprises friction plate positioning pins, lead screws, lead screwnuts and friction plates. The force arms are vertically and symmetrically arranged at the upper end of the base. The tensioning screw rod is horizontally arranged between the upper portions of the two force arms and extends out of the two force arms. The friction plates are symmetrically arranged on the inner side edges of the force arms through the friction plate positioning pins correspondingly. The lead screws vertically penetrate through the friction plate positioning pins and position the friction plates through the lead screw nuts. In this way, the brake device for the rotor of the suction fan is simple and compact in structure and easy and convenient to assemble and disassemble; the rotor of the suction fan can be effectively and rapidly braked and can also be stopped, both a brakefunction and a stop function are achieved, and the brake device is suitable for suction fans of various models.

Description

technical field [0001] The invention relates to the field of thermal power generation, in particular to a suction fan rotor braking device. Background technique [0002] The suction fan is one of the important equipments of the coal-fired thermal power plant. The function of the suction fan is to discharge the flue gas generated by the combustion of the boiler, discharge it into the atmosphere through the chimney, and keep the furnace at a certain negative pressure. The motor bearing equipped with the suction fan is a rolling bearing with a small friction coefficient. When the one-sided fan is repaired and the fan cover is not opened, due to the wind pulling effect in the air duct (the suction fan is operated on one side, the outlet of the disabled suction fan will generate negative pressure. pressure difference), the deactivated fan rotor will continue to rotate. However, when the suction fan is repaired, the rotor of the suction fan cannot rotate and must remain stationar...

AI Technical Summary

Problems solved by technology

Due to the large moment of inertia of the rotor of the suction fan, the effects of these two methods are not ideal when the pressure difference formed by pulling out the wind is large, and these two methods have great safety hazards and complicated operations during the implementation process.

Images