Ultra-high-temperature butterfly valve

Abstract

The invention discloses an ultra-high-temperature butterfly valve. An inner runner of a valve body and the outer surface of a butterfly plate are both provided with anti-abrasion thermal insulation linings, through an obliquely-arranged valve body sealing ring, the butterfly plate and the obliquely-arranged valve body sealing ring are coplanar when the butterfly valve is closed, and the situationthat the anti-abrasion thermal insulation linings are abraded in the long-term opening and closing process is avoided; through a valve body cooling water runner arranged in the valve body, and a butterfly plate water cooling mechanism which conducts water feeding and water discharging through a valve rod, water cooling can be conducted on the interior of the valve body and the interior of the butterfly plate, a valve plate are not prone to being stuck in the cooled valve body due to high-temperature expansion, a product is protected, and the durability of the product is improved.

Description

technical field [0001] The invention specifically relates to the technical field of high-temperature valves, in particular to an ultra-high-temperature butterfly valve. Background technique [0002] Flow regulating butterfly valves are commonly known as flue gas bypass valves, flue gas shut-off valves, etc., and are widely used in metallurgy, steel, petrochemical, electric power, environmental protection, hot blast stove systems and other industries. Its sealing performance has national standards. For example, the leakage rate needs to meet the national standards. The applicable medium is hot air and flue gas; the operating temperature is less than or equal to 450°C. The flow regulating butterfly valve has the advantages of simple structure, small size, light weight, convenient operation, and good flow regulating function. It is the main executive element in the engineering pipeline system. But the existing flow regulating butterfly valve cannot be applied to high temperatu...

AI Technical Summary

Problems solved by technology

However, the existing flow regulating butterfly valve cannot be used in high temperature environment

When the existing flow regulating butterfly valve is used in a high temperature environment, the inside of the valve body is easily stuck with the valve plate due to high temperature expansion, resulting in product damage and frequent replacement

[0003] In order to solve the above-mentioned technical defects, the existing high-temperature butterfly valve often sets wear-resistant and heat-insulating linings on the inner flow channel of the valve body and the outer surface of the butterfly plate, but the inner flow channel of the valve body and the outer surface of the butterfly plate The wear-resistant and heat-insulating lining is easy to cause wear during the long-term opening and closing process of the butterfly valve, which affects the sealing performance of the butterfly valve

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