Skewed slot blower fan self-start prevention protection device

Abstract

The utility model relates to an anti-self-start protection device for a chute blower fan, which is used for the protection of the motor in the dust removal system of the boiler. Including the ash silo, the ash silo and the feeding pipe are connected through a feeder, and an air supply pipe is provided between the top of the ash silo and the feeder, and the air supply pipe is supplied with air through the chute fan connected to it. The fan in the chute is connected with the self-control protection device, and the operation is controlled by the self-control protection device. Its beneficial effects are: when the chute fan trips due to ash blocking and other reasons, it cannot be automatically restored or restarted automatically, and there is a protection signal, so that the operator can know the state of the motor, so that the soot blowing pipeline can be cleaned and then reset The protection device greatly reduces the burning frequency of the motor, reduces the production cost, and ensures the quality of soot blowing.

Description

technical field [0001] The invention is used in the boiler dust removal system to protect the motor. Background technique [0002] In the boiler electric dust removal and soot blowing system, the dust particles adsorbed from the dust removal electric field enter the ash bin through the dust removal feeder, and then use compressed air to blow the accumulated ash in the ash bin to the ash field to complete the dust transfer. During the feeding process, due to the small diameter of the pipe and the large dust particles, it is easy to cause dust blocking at the feeding pipe. At this time, a chute pipe is led out and equipped with a fan to increase the power of dust falling, thereby reducing the blocking Dust probability, so that the dust removal system can run normally, to achieve the purpose of environmental protection. [0003] Due to the high amount of dust in the environment where the fan is located, the fan is prone to overload. At this time, the thermal relay equipped wit...

AI Technical Summary

Problems solved by technology

However, due to technological requirements, the chute fan and the feeder are equipped with interlocking, so the power switch adopts a multi-node transfer switch, which is different from the start button. When the motor overload protection operates, due to the characteristics of the thermal relay, it will recover after a period of time. , the motor will restart again, frequent start and overload will cause the motor to burn out, which will cause great damage to the equipment, increase the maintenance and replacement rate of the equipment, increase the cost and affect the quality of soot blowing

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