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A method for repairing cooling wall water pipes of blast furnace

A repair method and technology of cooling wall, applied in the direction of cooling device, etc., can solve the problems of reducing the cooling water volume of cooling equipment, reducing the flow of H1 water, affecting the cooling strength of the cooling wall, etc., to ensure the water flow, shorten the wind break time, improve the The effect of cooling intensity

Active Publication Date: 2021-10-19
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will result in a decrease in the water flow rate of H1 and affect the cooling strength of the cooling wall
When a large number of cooling water pipes are damaged, the cooling water volume of the upper cooling equipment will be greatly reduced

Method used

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  • A method for repairing cooling wall water pipes of blast furnace

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Effect test

Embodiment

[0024] Such as figure 1 Shown, a kind of repair method of blast furnace stave water pipe, comprises the following steps:

[0025] Step 1. Add pipe-through return water bag 6: Before the wind breaks, the maintenance personnel will place 315°-360°, 0°-45°, 45°-90°, 90°-135°, 135° on the 19m platform at an elevation of 22m Five directions of °-180 ° have added five pipe-through return water bags 6. Each backwater bag is 3 meters long, welded with Φ114×7 seamless steel pipe, and effectively fixed with brackets. On the return water ring pipe of the copper cooling plate, press the water belt to open 5 holes with an inner diameter of Φ100, connect the pipe return water bag 6 with the copper cooling plate drainage ring pipe, and install a DN100 gate valve in the middle. There are 7 holes spaced apart on the return water bag, the hole spacing is 300-450mm, the inner diameter of the hole is Φ32mm, the hole position is directly below the pipe, and the distance between the inner diamete...

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Abstract

The invention relates to a method for repairing a cooling wall water pipe of a blast furnace, and belongs to the technical field of cooling wall repairing. The present invention comprises the following steps: a. adding a pipe-through return water bag; b. confirming the damaged water pipe; c. installing a hard pipe; d. piercing the damaged water pipe; e. installing a miniature cooler; f. adding a soft water pump; g. Step-by-step water adjustment; the invention reduces the resistance loss of the soft water flow in the water pipe, ensures the necessary water flow, and improves the cooling strength of the pipe; shortens the blast furnace shutdown time; quickly confirms the damaged cooling water pipe, and the accuracy rate is 100%. ;It is beneficial to reduce the resistance loss of the hose and facilitate the opening operation of the subsequent hard pipe; by installing a micro-cooler, the cooling function of the damaged water pipe that cannot pass through the pipe can be repaired; Step-by-step adjustment of the water volume scheme further ensures the cooling strength of the cooling water pipe.

Description

technical field [0001] The invention relates to a method for repairing a cooling wall water pipe of a blast furnace, and belongs to the technical field of cooling wall repairing. Background technique [0002] After the cooling water pipe of domestic blast furnace stave is damaged, the damaged cooling water pipe is generally repaired by piercing the pipe, or a micro-cooler is implanted in the damaged cooling water pipe or an intermediate repair is performed to replace the whole stave. The patent document of Chinese patent application publication number CN105969924 A discloses a method for repairing cooling water pipes of blast furnace staves. First find the leak by pressing and confirm the damaged cooling water pipe. Put the metal hose inside the damaged cooling water pipe, and fill the gap formed by the metal hose and the damaged cooling water pipe with a high thermal conductivity grouting layer; The water flow of the metal hose compensates for the unbalanced cooling effec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B7/10
CPCC21B7/10
Inventor 袁孝法王书龙蔡刚李志辉
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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