Novel top oxygen blast metal hose for steel converter

Abstract

The invention relates to a novel top oxygen blast metal hose for a steel converter, belonging to the technical field of oxygen blast metal hoses. The top oxygen blast metal hose comprises a connecting flange, a lifting flange, a stainless steel wear-resistant liner, an extended protecting jacket, a main body corrugated pipe and an outer layer protecting net, wherein the end part of the main body corrugated pipe is connected with the end part of a pipe coupling, and the extended rigid protecting jacket is arranged outside the joint; the inner walls of the main body corrugated pipe and the pipe coupling are provided with the stainless steel wear-resistant liner; the outer wall of the main body corrugated pipe is tightly provided with the outer layer protecting net; and the outer wall of the pipe coupling is respectively welded with the connecting flange and the lifting flange. The invention has the advantages of novel structure, small size and light weight, effectively ensures the converter top blast steel making safety, reduces the possibility of accidents, and protects the safety of properties and lives of workers; and the invention can resist abrasion and temperature and reduce flow resistance, can stretch and retract freely, reduces the noise, and greatly prolongs the service life of the hose.

Description

Technical field: [0001] The invention relates to the technical field of oxygen-blowing metal hoses, in particular to a new top-blown oxygen-blowing metal hose for steelmaking converters. Background technique: [0002] Oxygen-blowing metal hose is a flexible element used between the converter oxygen lance and the oxygen pipeline in the steelmaking industry. It can move up and down with the oxygen lance. In the past, rubber hoses were often used in this part, which is easy to age and explode, endangering personal safety. The equipment is safe, and has a short service life and frequent replacement, which affects production. After the 1990s, ordinary stainless steel metal hoses were used, with stainless steel wire mesh woven on the outside, and enlarged stainless steel bellows at both ends of the hose to protect the roots, without any protection inside the hose. This scheme has been used until 2006. People in the industry found that this structure is bulky and not easy to bend,...

AI Technical Summary

Problems solved by technology

People in the industry found that this structure is bulky and not easy to bend, which affects the movement of the oxygen lance trolley, and there is also a strange sound; the interior is under harsh conditions such as high flow rate, high temperature and high pressure, and high dust, which cannot meet the requirements of the converter steelmaking process. requirements, so the service life is very short, some use less than a month to be replaced

[0003] In recent years, with the development trend of the iron and steel industry, the upgrading of furnace types has been accelerated, and the quality of molten steel, the service life of this product and the output of molten steel have been greatly improved. This ordinary stainless steel metal hose also meets Can not meet the requirements of modern use

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