Dredging device and dredging method for blockage of slag fall pipe of circulating fluidized bed boiler in biomass power plant

Abstract

The invention discloses a dredging device and a dredging method for blockage of slag falling pipe of a circulating fluidized bed boiler in a biomass power plant. One end of a guide rail support is hinged to a guide rail support fixed base, the other end of the guide rail support is supported on the free end of an angle adjustment unit, a guide rail is fixed in the guide rail support, a dredging rod is arranged on the guide rail support, one end of the dredging rod is disposed on the outer side of a dredging port, the other end of the dredging rod is hinged with a connecting rod, the connectingrod is hinged with a crank, and the crank is fixedly connected with a rotating shaft of a dredging work driving motor. A rotating shaft of an angle adjustment driving motor is connected with the angle adjustment unit, a sealing cover driving motor is arranged on one side of the slag falling pipe, a rotating shaft of the sealing cover driving motor is fixedly connected with a sealing cover, and the sealing cover closes the dredging port. The dredging device can replace manual dredging work, dredges the slag falling pipe on line and in real time, feeds back the dredging situation of the slag falling pipe, gives an alarm when the blockage cannot be dredged, greatly reduces the amount of manual slag poking work and improves the safety and economy of the power plant boiler.

Description

[0001] Technical field: [0002] The invention relates to a dredging device and a dredging method for clogging of a slag falling pipe of a circulating fluidized bed boiler in a biomass power plant. [0003] Background technique: [0004] The circulating fluidized bed boiler technology of biomass power plants is a high-efficiency and low-pollution waste clean combustion technology. It has many advantages such as high combustion efficiency, good combustion stability, and recyclable ash. It has been widely used commercially in China. Hundreds of boilers are currently in operation or under construction. [0005] Due to the complex fuel, many impurities, and large particle size of circulating fluidized bed boilers, the slag after combustion is relatively complex. , Large slag and coke blocks are very easy to block in the slag pipe, especially the part from the slag pipe to the feed port of the slag cooler, due to the occurrence of elbows and smaller pipe diameters, blockage is more...

AI Technical Summary

Problems solved by technology

[0005] Due to the complex fuel, many impurities, and large particle size of circulating fluidized bed boilers, the slag after combustion is relatively complex. , large slag and coke blocks are easy to block in the slag pipe, especially the part from the slag pipe to the feed port of the slag cooler, due to the occurrence of bends and smaller pipe diameters, blockage is more likely to occur

At present, power plants widely adopt the method of manual dredging to remove blockages. The on-site operating environment is harsh, and operations have to be carried out every 1-2 hours. big security risk

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