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Method for preparing water cooling pipe for cooling wall of blast furnace

A technology of water-cooled pipes and cooling walls, applied in lining repair, cooling devices, etc., can solve the problems of inability to carry out, high resistance of refractory materials, poor thermal conductivity, etc.

Inactive Publication Date: 2005-06-01
SHOUGANG CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method cannot be used for damaged pipes with small bending radius or many bends, or when the water cooling pipe is blocked.
In addition, the slit between the corrugated pipe and the original damaged water-cooling pipe is filled with refractory material with high resistance and poor thermal conductivity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0006] Below in conjunction with embodiment the present invention is described in further detail:

[0007] During the blast furnace shutdown period, open both ends of the inlet and outlet water pipes of the water cooling pipe damaged by the blast furnace stave, use a steel corrugated pipe with one end closed, fill the bellows with water, and insert the closed end of the bellows into the opened water outlet of the water cooling pipe Connect the other end to the outlet of the manual water pressure pump, pressurize the bellows through the manual water pressure pump, under the action of pressure, the wave distance of the bellows gradually increases, and the bellows along the damaged water cooling pipe It moves towards automatic bending and extension and smoothly passes through the damaged part of the water-cooling pipe, and finally protrudes from the opened water outlet of the water-cooling pipe. Remove the pressure inside the corrugated pipe, open the closed end of the corrugated...

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PUM

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Abstract

The invention relates to a method for repairing the water-cooled pipe of the cooling wall of a blast furnace by injecting liquid into a steel corrugated pipe with one end closed, and extending the closed end of the corrugated pipe into the damaged water-cooled pipe, and pressurizing the open end of the corrugated pipe , so that it extends automatically along the direction of the water-cooling pipe, and replaces the damaged water-cooling pipe with a corrugated pipe. This method has a wide range of applications, and the repaired stave water-cooling pipe has good thermal conductivity.

Description

technical field [0001] The invention relates to a method for repairing damage to a cooling wall water cooling pipe of a blast furnace. Background technique [0002] When the blast furnace produces molten iron, the furnace body and the lower part of the furnace body need to be cooled. The cooling of the blast furnace body is completed by hundreds of blast furnace staves. The blast furnace stave is made of cast iron, and its cooling function is realized by passing water through multiple cooling water pipes in the stave. The water-cooled pipe cast in the stave body of the blast furnace is used for a long time, and the cooling water pipe is damaged, and the cooling water cannot be cooled or the cooling water leaks, which will cause the temperature of the outer furnace skin of the blast furnace to be too high, that is, the so-called outer furnace of the blast furnace If the skin "sees red", it will also cause water leakage to the inside of the blast furnace...

Claims

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Application Information

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IPC IPC(8): C21B7/10F27D1/16
Inventor 韩庆赵民革熊军刘庆安赵世忠于双喜王颖生丁汝才魏前龙
Owner SHOUGANG CORPORATION