Wear-resistant device of water cooling pipe wall of circulation fluidized bed boiler

Abstract

The invention discloses a wear-resistant device of a water cooling pipe wall of a circulation fluidized bed boiler. The wear-resistant device comprises water cooling pipes and a rib plate used for fixing the water cooling pipes; baffles are transversely arranged on the water cooling pipes which are vertical to an axial direction of the water cooling pipes; the baffles of the adjacent water cooling pipes are located in a same plane and are formed in one row; a gap is formed between any two adjacent baffles; a semicircular groove is arranged on each baffle body; the grooves are matched with the water cooling pipes in shape; supporting legs are arranged at both sides of the grooves of the baffles; the supporting legs are linked with the rib plate; a distance between the axial adjacent two rows of the baffles of the water cooling pipes is 1.3-1.5m; and a distance between the highest points of the grooves of the baffles and the upper end surfaces of the baffles is 20-25 mm. With the adoption of the device, the baffles arranged on the water cooling pipe walls can be used for preventing fuel from being in direct friction contact with the water cooling pipe walls, so that the wear service life of the water cooling pipe walls can be naturally prolonged. The wear-resistant device has the advantages of simple structure, convenience for installation, and good wear-resistant effect of the water cooling pipe walls.

Description

technical field [0001] The invention relates to an anti-wear device for a water-cooled tube wall of a circulating fluidized bed boiler. Background technique [0002] Due to the high temperature in the furnace, coarse material particles and fast wind speed in circulating fluidized bed boilers, the water-cooled tube wall of the furnace is worn out quickly. Wear is the main reason for the bursting of the water-cooled tube wall of the boiler, which affects the long-term safe operation of the boiler. In order to solve this problem, there are currently three anti-wear methods: one is to pour wear-resistant refractory materials to prevent wear; the other is to cover wear-resistant tiles to prevent wear; the third is to use metal spraying to prevent wear; Has its disadvantages: [0003] (1) Anti-wear of pouring wear-resistant refractory material: It affects the heat transfer of the water-cooled tube wall and reduces the thermal efficiency of the boiler. [0004] (2) Wear-resistant...

AI Technical Summary

Problems solved by technology

[0003] (1), pouring wear-resistant refractory anti-wear: affect the heat transfer of the water-cooled tube wall and reduce the thermal efficiency of the boiler

[0004] (2) Wear-resistant tiles on the cover: First, it affects the heat transfer of the water-cooled tube wall tube and reduces the thermal efficiency of the boiler; second, it will form localized concentrated erosion of the water-cooled wall tube and cause the water-cooled wall tube to burst

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