An H-shaped connecting pipe for inlet and outlet water pipes of a blast furnace cooling wall and its application method

Abstract

The invention relates to an H-shaped connecting pipe for blast furnace cooling wall water inlet / outlet pipes. The H-shaped connecting pipe is arranged between two adjacent cooling walls and used for connecting a water inlet pipe and a water outlet pipe of the two adjacent cooling walls. The H-shaped connecting pipe comprises a water inlet connecting pipe and a water outlet connecting pipe, wherein a middle communicating pipe is butted between the water inlet connecting pipe and the water outlet connecting pipe; the water inlet connecting pipe is externally connected with a water inlet external pipe; the water outlet connecting pipe is externally connected with a water outlet external pipe; the middle communicating pipe is provided with a second ball valve; the water outlet external pipe is provided with a first ball valve; and the water inlet external pipe is provided with a third ball valve. The H-shaped connecting pipe implements on-line cooling on external water of the single cooling wall damaged water pipe and controlled water curing or external nitrogen water atomization cooling, and does not influence the cooling of other undamaged cooling walls, thereby greatly reducing the quantity of water leaking into the blast furnace, and keeping the regular production of the blast furnace.

Description

technical field [0001] The invention relates to the connection of cooling wall inlet and outlet water pipes in the blast furnace engineering stage and the transformation of the cooling wall connection method in the later stage of the blast furnace. Background technique [0002] At present, the known connection method for the inlet and outlet water pipes of the stave of the blast furnace is a U-shaped hard pipe connection, and the heat load of the lower part of the blast furnace shaft is relatively large, and the stave of the lower part of the stave is also easily damaged. The connection method of the U-shaped hard pipe, in the case of water leakage from the damaged stave water pipe, cannot control the water of a single damaged stave pipe online, and cannot reduce the amount of water leaking into the blast furnace, which will lead to a significant increase in the fuel ratio of the blast furnace The rise will affect the stability of the blast furnace and even lead to accidents...

AI Technical Summary

Problems solved by technology

[0002] At present, the known method of connecting the inlet and outlet water pipes of the stave of the blast furnace is a U-shaped hard pipe connection, and the heat load of the lower part of the blast furnace stave is relatively large, and the stave of the lower part of the stave is also easily damaged

The connection method of the U-shaped hard pipe, in the case of water leakage from the damaged stave water pipe, cannot control the water of a single damaged stave pipe online, and cannot reduce the amount of water leaking into the blast furnace, which will lead to a significant increase in the fuel ratio of the blast furnace rising, affecting the stability of the blast furnace, and even causing accidents such as blast furnace cooling and hearth freezing

Even if water control measures are taken, it is necessary to control the water of the 16 sections of staves in series from bottom to top. Due to the reduction of water volume and water speed, long-term water control will inevitably cause certain damage to other undamaged staves

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