Compound abrasion-proof device for water wall of circulating fluidized bed boiler

Abstract

The invention provides a compound abrasion-proof device for a water wall of a circulating fluidized bed boiler, belongs to the technical field of boiler water wall abrasion resistance, and aims to provide a compound abrasion-proof device for a water wall of a circulating fluidized bed boiler, which can effectively protect a water wall tube from abrasion for a long time, is convenient to construct and maintain, and can not reduce boiler efficiency. The adopted technical scheme is that the compound abrasion-proof device for the water wall of the circulating fluidized bed boiler comprises a wedged abrasion-proof protective tile and a wing-shaped flow deflector, wherein the wedged abrasion-proof protective tile is vertically arranged, the cross section of the wedged abrasion-proof protective tile is arc-shaped, the wing-shaped flow deflector is a square flat plate arranged aslant downwardly, and is fixed at the bottom of the wedged abrasion-proof protective tile, and partial parts positioned in the arc-shaped interior of the wedged abrasion-proof protective tile are cut off to form notches. By using the compound abrasion-proof device, the water wall tube can be effectively protected, the construction and the maintenance are facilitated, and the abrasion-proof effect can be kept long.

Description

technical field [0001] The invention relates to a composite anti-wear device for a water-cooled wall of a circulating fluidized bed boiler, which belongs to the technical field of anti-wear for the water-cooled wall of a boiler. Background technique [0002] At present, the known anti-wear methods of membrane water walls of circulating fluidized bed boilers can be divided into three categories: 1. anti-wear spraying; 2. anti-wear protection tiles; 3. anti-wear beams and anti-wear belts. The independent use of these methods has some inevitable defects and deficiencies such as partial wear of the interface, difficulty in construction and maintenance, and insufficient endurance. It is easy to form an air gap between the water wall tube and the water wall tube, which reduces the heat transfer effect and leads to the disadvantage of reducing the efficiency of the entire boiler. Due to the above-mentioned shortcomings, the existing anti-wear methods are difficult to meet the need...

AI Technical Summary

Problems solved by technology

The independent use of these methods has some inevitable defects and deficiencies such as partial wear of the interface, difficulty in construction and maintenance, and insufficient endurance. It is easy to form an air gap between the water wall tube and the water wall tube, which reduces the heat transfer effect and reduces the efficiency of the entire boiler.

Due to the above-mentioned shortcomings, the existing anti-wear methods are difficult to meet the needs of long-term stable operation of the boiler, and there is an urgent need for a new type of anti-wear device that can eliminate the defects of the traditional anti-wear method, which can operate in a maintenance-free state. Long-term anti-wear effect

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