A sealing device between the side water cooling wall and the side wrapping wall

Abstract

The invention provides a sealing device between a side water wall and a side enclosure wall. The sealing device is capable of guaranteeing leawkproofness and good in thermal expansion and prevents the side water wall and the side enclosure wall from deformation to guarantee high efficiency and safety in operation of a boiler. The sealing device comprises the water wall, the side enclosure wall, a water wall inner side pipe and a side enclosure wall inner side pipe, and the water wall inner side pipe and the side enclosure wall inner side pipe are adjacent and parallel. The sealing device is characterized in that an upper sealing sleeve and a lower sealing sleeve cover the head and tail positions in the vertical direction of the water wall inner side pipe and the side enclosure wall inner side pipe, one side of each of the upper sealing sleeve and the lower sealing sleeve is connectedly welded to the side enclosure wall on the outer side of the side enclosure wall inner side pipe, an upper cover plate is arranged on the top of the upper sealing sleeve, a lower cover plate is arranged at the bottom of the lower sealing sleeve, and the upper cover plate and the lower cover plate correspondingly fit the water wall inner side pipe and the side enclosure wall inner side pipe in shape.

Description

technical field [0001] The invention relates to the technical field of boiler structures, in particular to a sealing device between a side water cooling wall and a side cladding wall. Background technique [0002] Due to differences in temperature and materials, the thermal expansion between the side water wall and the side wall of a large pulverized coal boiler is different. The existing technology uses flat steel to directly weld and seal. Its function is to ensure sealing, but the thermal expansion cannot be satisfied. There will be deformation of the flat steel, or deformation of the side water cooling wall and the side cladding wall, which will cause structural defects inside the boiler, which cannot ensure efficient and safe operation of the boiler. Contents of the invention [0003] In view of the above problems, the present invention provides a sealing device between the side water cooling wall and the side wrapping wall, which can not only ensure the sealing perfo...

AI Technical Summary

Problems solved by technology

[0002] Due to differences in temperature and materials, the thermal expansion between the side water wall and the side wall of a large pulverized coal boiler is different. The existing technology uses flat steel to directly weld and seal. Its function is to ensure sealing, but the thermal expansion cannot be satisfied. There will be deformation of flat steel, or deformation of side water cooling wall and side cladding wall, which will cause structural defects inside the boiler, which cannot ensure efficient and safe operation of the boiler

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