Electric slide plate gate of circulating fluidized bed boiler

Abstract

The invention discloses an electric slide plate gate for a circulating fluidized bed boiler. The electric slide plate gate comprises a gate frame and a gate body, wherein the gate frame is provided with a gate opening, a power device drives the gate body to reciprocate on the gate frame to open and close the gate opening, the gate frame is provided with a travel switch, the electric slide plate gate further comprises a mechanical linkage mechanism, the gate frame is provided with a power input end of the mechanical linkage mechanism, and a power output end of the mechanical linkage mechanism is connected to a mechanical switch of the power device. According to the electric slide plate gate for the circulating fluidized bed boiler, the power input end, the mechanical linkage mechanism and the mechanical switch form a standby switch structure, and when the travel switch is triggered to output a control signal, the opening action and the closing action of the gate body are detected to achieve the effect of timely controlling the gate body to stop running; and meanwhile, the mechanical linkage mechanism is of a mechanical structure, influences of coal dust and the like on the mechanical linkage mechanism are small, and therefore the frequency of faults occurring in the gate body opening and closing process is reduced.

Description

technical field [0001] The invention relates to the technical field of coal-fired feeding equipment, in particular to an electric sliding door of a circulating fluidized bed boiler. Background technique [0002] Circulating fluidized bed boiler is a high-efficiency, low-pollution and clean combustion device, which is widely used in power plant boilers, industrial boilers and waste treatment and utilization. Each circulating fluidized bed boiler needs multiple coal feeders to supply coal, and each coal feeder is equipped with an outlet start flap door. Before starting the coal feeder, the pneumatic flap door is opened first, and then the coal feed is started. The machine is used to supply coal to the boiler. After the coal supply is over, the control starts the sliding door to close. During the opening or closing process of the sliding door, it is necessary to detect whether the opening and closing of the sliding door is in place. The existing coal feeders all use the travel ...

AI Technical Summary

Problems solved by technology

[0004] During the use of the sliding door of the prior art circulating fluidized bed boiler, due to the large dust and humidity in the surrounding environment, coal dust sticks to the contacts after entering the travel switch, making the travel switch unable to operate, thus causing the sliding door After the opening stroke or closing stroke is in place, the stroke switch cannot give a signal control, and the drive unit continues to move the sliding door, which is easy to cause damage to the sliding door and seriously affects the safe and stable operation of the unit

Images