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Solid flexible seal method for boilers in power plants

A flexible sealing and boiler technology, applied in steam boilers, steam boiler accessories, steam boiler components, etc., can solve problems such as affecting the sealing effect and cracking of the sealing layer.

Inactive Publication Date: 2007-07-25
天津市津鲁源电力工程技术服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the inevitable expansion and contraction due to the change of boiler temperature, this process cannot effectively change the boiler body, which often causes cracks in the sealing layer and affects the sealing effect

Method used

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  • Solid flexible seal method for boilers in power plants

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Embodiment Construction

[0010] As can be seen from the accompanying drawings, the present invention includes a water wall 1, a wall pipe 2, a steam drum 3 and a sealing layer 4, and is characterized in that: the wall pipe 2 and the water wall 1 are welded with steel nails, and the sealing layer 4 The ceramic fiber cotton and the steel mesh are sequentially interspersed on the steel nails, and after being bonded to each other, the refractory castable is laid on the steel mesh, and the steel mesh and the steel nails are firmly welded. In this way, the sealing layer 4 forms a three-dimensional sealing body at the leaking part of the boiler. Since the materials used are all flexible materials, they have the characteristics of absorbing and adjusting expansion. When the boiler heats up and expands, it can effectively absorb the expansion. The position expands and expands, and is not rigidly restraining expansion, and this has just certainly solved boiler leakage ash problem, has reached the purpose of the ...

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Abstract

The present invention relates to a stereo flexible sealing method for electric power plant boiler. Said invention includes wall-passing pipe, water cooling wall, and drum and sealing layer. It is characterized by that on the described wall-passing pipe and wall cooling wall the steel nails are welded, the described sealing layer is made up by using ceramic fiber cotton and steel net, making them be successively mounted on the steel nails, making them be mutually adhered together, and then laying fire-resistant poured material on the steel net. The described steel net and steel nails are welded together firmly, so that the sealing layer can be formed into a stereoscopic sealing whole body in the boiler leakage position. The material adopted by said invention is a flexible material, so that said invention can effectively solve the air leakage and ash leakage problem of boiler.

Description

Technical field [0001] The invention relates to a sealing method for air leakage and ash leakage of boilers in power plants. Background technique [0002] Boiler air leakage and furnace roof ash leakage are common problems in power plant boilers. At present, the solution to this problem basically adopts the traditional sealing method, that is, first cast refractory plastic at the leaking part, fill it with insulation material, and weld it with refractory steel plate to form a seal. layer, and finally add an insulation layer for thermal insulation treatment. However, due to the inevitable expansion and contraction due to the change of boiler temperature, the process cannot effectively change the boiler body, which often causes cracks in the sealing layer and affects the sealing effect. Contents of the invention [0003] The object of the present invention is to provide a three-dimensional flexible sealing method to solve the problem of boiler air leakage and ash leakage, a...

Claims

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Application Information

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IPC IPC(8): F22B37/36F22B37/22F24H9/02F27D1/00
Inventor 崔晓红
Owner 天津市津鲁源电力工程技术服务有限公司
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