Construction Method of Boiler Wall Temperature in Large Units

Abstract

The invention discloses a large unit boiler wall temperature element construction method. The large unit boiler wall temperature element construction method comprises construction preparation, test point cleaning and heat collection block mounting, boiler top wall temperature bridge frame construction, armored thermocouple element mounting, cable laying and cable wiring. The welding position of atest point is determined according to the overall arrangement of the positions, quantity, lengths, specifications and types of boiler wall temperature elements; a heat collection block is welded according to technical requirements; the layering number of boiler ceiling row cable groove boxes and the height of a fixing support are determined; the wall temperature elements are fixed through single-layer bridge frames or multi-layer bridge frames; a wall temperature element protection pipe and an intelligent front end are mounted according to the position of the test point and the positions of the bridge frames; and wall temperature element mounting, bus cable laying and wiring are carried out before boiler top heat preservation construction. According to the layout situation of the wall temperature elements, the intelligent front end is reasonably arranged beside a ceiling bridge frame, the problem that boiler settlement is influenced by conventional boiler wall temperature element mounting is effectively solved, and after the wall temperature elements of a boiler are mounted, effective protection can be realized.

Description

Technical field: [0001] The invention relates to a construction method for boiler wall temperature of a large-scale thermal power unit, and belongs to the technical field of thermal power installation and construction. Background technique: [0002] In large-scale thermal power projects, the stability of the boiler wall temperature is directly related to the safe and stable operation of the boiler, the economic benefits of the power plant, and the sustainable development of the enterprise. With the increasing number of boiler wall temperature control cables and heavy construction workload, boiler wall temperature installation, cable laying and wiring process quality are the focus of project management and control. In the 1000MW large-scale unit, the total installed boiler wall temperature is about 2200. In the past, when the boiler wall temperature was installed in the project, the boiler wall temperature was led to the steel platform, and the boiler wall temperature affect...

AI Technical Summary

Problems solved by technology

In the past, when the boiler wall temperature was installed in the project, the boiler wall temperature was led to the steel platform. During operation, due to the boiler heat sinking, the boiler wall temperature affected the boiler settlement problem.