An Anti -Blocking Device For the Measurement of the Furnace Pressure of a Circulating Fluidized Bed Boiler

Abstract

An anti-blocking sampling device for the measurement of the furnace pressure of a circulating fluidized bed boiler. The invention discloses an anti-blocking sampling device for the measurement of the furnace pressure of a circulating fluidized bed boiler. which comprises a sampling tube. a drill bit. a blocking plate, a screw rod, a valve handle, an expansion tube, a purging pipe, a sampling port, a solenoid valve, and control logic for the purging process. The lower end of sampling tube is set on the side wall of the boiler furnace, one end of the screw rod is set through the sampling tube, the drill bit is set on the screw rod in the sampling tube, the blocking plate is set on the screw rod in the sampling tube, the valve handle is set on the screw rod. the expansion tube is connected with the sampling tube, the sampling port is set on the expansion tube, the purging pipe is set on the side wall of the expansion tube, a solenoid valve is arranged along the purging pipe. The part of purging pipe outside the side wall of the expansion tube is arranged horizontally, and the part of the purging pipe arranged inside the side wall of the expansion tube is arranged obliquely. The invention belongs to the technical field of circulating fluidized bed boilers, and specifically refers to an antiblocking sampling device for the measurement of the furnace pressure of a circulating fluidized bed boiler with reasonable structural design, economical, convenient maintenance and dredging, and good anti-blocking effect.