Online replacement method for scraper chain of submerged chain conveyor

Abstract

The invention discloses an online replacement method for a scraper chain of a submerged chain conveyor. The online replacement method comprises the steps that an upper cover plate, a stairway and a lower cover plate at a tensioning wheel at the tail of the submerged chain conveyor are dismounted firstly, so that an opening is formed in the tensioning wheel at the tail of the submerged chain conveyor, and meanwhile a scraper chain outlet is formed in the position, close to a tail guide wheel, of a bin shell; the old scraper chain in the submerged chain conveyor is disconnected at the position between the tail guide wheel and the tensioning wheel, and the end, close to the tail guide wheel side, of the old scraper chain is taken out of a bin from the scraper chain outlet and then connected with the work end of a winch through a steel wire rope; the end, close to the tensioning wheel side, of the old scraper chain is connected with one end of a new scraper chain, the submerged chain conveyor is started, meanwhile, the winch is started, and the running speed of the submerged chain conveyor is adjusted to be consistent with that of the winch; and after the whole old scraper chain is dragged out of the submerged chain conveyor, the head and the tail of the new scraper chain are connected. According to the online replacement method, scraper chain replacement can be carried out during unit running, running of a unit is not influenced, and replacement time is short.

Description

technical field [0001] The invention relates to a method for online replacement of scraper chains of a slag removal machine. Background technique [0002] The scraper chain used for coal-fired boilers for thermal power generation now has a certain life span, so the scraper chain needs to be replaced every once in a while. When replacing the scraper chain of the slag scraper , no matter at home or abroad, the replacement of the scraper chain requires a long-term shutdown of the slag removal machine. Generally, it takes about 2-3 days to replace the entire set of scraper chains. Although the slag scraper generally has an inspection period, for long-term operation units, the wear of the scraper chain exceeds the standard value, and it is not enough to last until the inspection period. , Continued operation will cause potential safety hazards to the operation of the slag scraper and the entire unit. Once the scraper chain breaks, it will inevitably cause the slag scraper to sto...

AI Technical Summary

Problems solved by technology

Although the slag scraper generally has an inspection period, for long-term operation units, the wear of the scraper chain exceeds the standard value, and it is not enough to last until the inspection period. , the continued operation will cause safety hazards to the operation of the slag scraper and the entire unit. Once the scraper chain breaks, it will inevitably cause the slag scraper to stop operating, and even threaten the normal operation of the unit.

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