Macroscopic inspection device for heating surface of coiled pipe of rear smoke well of power station boiler

Abstract

The invention discloses a macroscopic inspection device for a heating surface of a coiler of a rear smoke well of a power station boiler, which belongs to the technical field of power station boiler maintenance and comprises a remote control trolley, a camera device and a display. The remote control trolley is used for walking along an inspection line among all layers of coiled pipe groups; the camera device is carried on the remote control trolley and used for obtaining image information of the coiled pipe sets on the upper layer and the lower layer. And the display communicates with the camera device and is used for receiving and displaying image information shot by the camera device. The device can replace manual operation to perform macroscopic inspection on the coiled pipe on the heating surface of the smoke well behind the power station boiler, the burden of inspection personnel and maintenance technicians is reduced, the health of the inspection personnel and the maintenance technicians is protected, and manpower and material resources are saved.

Description

technical field [0001] The invention relates to the technical field of power station boiler maintenance, in particular to a macro inspection device for the heating surface of a smoke shaft serpentine tube behind a power station boiler. Background technique [0002] The wall thickness of the low-temperature superheater and low-temperature reheater tube in the rear flue of the large coal-fired power station boiler will be thinned due to flue gas erosion and blowing damage during operation, while the waste incineration boiler will be corroded and thinned due to the complex variety of fuels. When the wall thickness of the pipe is too small, the pipe burst causes the pipe to leak and cause unplanned shutdown. Therefore, each time the power plant is shut down for maintenance or internal inspection of the boiler, the macro inspection is one of the key points of the inspection of the power plant maintenance technicians or inspectors. [0003] Existing macro inspections at the techn...

AI Technical Summary

Problems solved by technology

However, if figure 1 As shown, the pipelines of the low-temperature superheater and low-temperature reheater have multi-layer serpentine tube groups, and each layer of serpentine tube groups has multiple groups of tube rows. Due to the economical needs of boilers, generally low-temperature superheaters and low-temperature reheaters are The arrangement in the back smoke shaft of the boiler is relatively compact, the spacing between the serpentine tube groups of each layer is about 600-800mm, and the spacing between each group of tube rows is 50-60mm, resulting in a very narrow inspection space, due to the limitation of its space During the inspection, the inspectors need to crawl forward, unable to sit up or stand, which brings hard and heavy work to the inspectors, and the waste incineration boilers contain carcinogenic dioxins because of the combustion products. Staying in the boiler for a long time will cause great harm to the body

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