Prefabricated member for tertiary air hose elbow

Abstract

The invention relates to a prefabricated member for a tertiary air hose elbow. The prefabricated member comprises a prefabricated brick body, wherein a connecting boss is arranged at the top end of the prefabricated brick body, a convex block is fixedly connected to the interior of the connecting boss, a groove is formed in the bottom end of the convex block, at least one screw rod is arranged at the bottom end of the convex block, and a plurality of flow deflectors are arranged on each outer side wall of the convex block. The prefabricated member has the advantages that because of the convex block arranged at the top end of the prefabricated brick body, in the airflow scouring process, the convex block is first scoured, flow distribution is performed through the flow deflectors arranged on the convex block, scouring to the prefabricated brick body caused after high-speed tertiary airflow turns can be effectively reduced, and therefore damage to the portion of the prefabricated brick body is greatly reduced, airflow is effectively distributed, the time in which the convex block is scoured by the airflow is shortened, the service life of the prefabricated brick is prolonged, after the convex block is abraded because of scouring, the angle of the convex block can be adjusted or the convex block can be correspondingly replaced according to the actual using condition, the work efficiency in maintenance is improved, and production cost is reduced.

Description

technical field [0001] The invention relates to a prefabricated part for a tertiary air pipe elbow. Background technique [0002] The lining of the elbow of the tertiary air duct not only withstands severe alkali corrosion under the working temperature of 800-1200 ℃, but also withstands the erosion of the high-speed tertiary air flow filled with a large amount of fine-grained clinker. The environment and working conditions are harsh and the damage is serious , often affecting production. [0003] The refractory material used in the lining of the tertiary air duct elbow has undergone several evolutions: the original design was high-alumina castable, and the service time was about 1 month, and then it was changed to mullite corundum castable, and the service time was about 2 months After 1 month, the combined frame structure of high wear-resistant bricks and mullite corundum castables is adopted, and the service time can only last for 4 months. Whenever there are hidden dang...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a prefabricated part for a tertiary air duct elbow, which can well solve the defects of large maintenance workload, high maintenance cost and short service life of the existing prefabricated parts during maintenance.

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