Anti-abrasion tile expansion joint used for thermoelectric boiler

Abstract

The invention discloses an anti-abrasion tile expansion joint used for a thermoelectric boiler. The anti-abrasion tile expansion joint is composed of a heat exchange pipe (1), a bend anti-abrasion tile (2) and a straight pipe anti-abrasion tile (3). The bend anti-abrasion tile (2) is fixed to the outer side of a bend part of the heat exchange pipe (1). The straight pipe anti-abrasion tile (3) is installed on the outer side of a straight pipe part of the heat exchange pipe (1). Part of the straight pipe anti-abrasion tile (3) stretches to the inner side of a straight shell part (2-2) of the bend anti-abrasion tile (2). By means of the anti-abrasion tile expansion joint used for the thermoelectric boiler, the bend anti-abrasion tile obtained after three times of molding is adopted, the strength is high, machining and installation are convenient, abrasion resistance is good, compared with a traditional lap joint head welding manner, welding work hours are reduced, and the service life isprolonged by 30% or higher.

Description

Technical field [0001] The invention relates to the field of manufacturing parts of thermoelectric boilers, in particular to an anti-wear tile expansion joint for heat exchange tubes of heating surfaces of thermoelectric boilers. Background technique [0002] Anti-wear tiles are mainly used on the windward side of heating surface pipes such as boiler superheaters, reheaters, economizers, water wall pipes, and induced draft fans (with a small amount). The main function is to protect the boiler pipes The wind surface reduces the wear of the pipe and increases the service life of the pipe on the heating surface. In general industry, it is mostly called "anti-wear tile" and "anti-wear cover". The anti-wear tile is a special accessory for boilers. Generally, it is mostly used in power station boilers. Small boilers are less used, and some coal chemical industries also use it. The service life of the anti-wear tile varies in different types of boilers and different parts of use. The ...

AI Technical Summary

Problems solved by technology

In addition, some boiler tubes are not equipped with anti-wear tiles, but during the regular inspection of the boiler, it is found that the tubes have a tendency to wear and thin. Usually, anti-wear tiles are also installed to prevent further wear of the tubes, causing serious consequences such as boiler tube bursts

At present, the overlapping part of the anti-wear tile is generally welded. This method has several disadvantages: 1. The risk caused by poor welding; 2. The risk of easy wear of the welded part

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