Water cooling valve clack structure of 1500 DEG C ultrahigh-temperature valve

Abstract

A water cooling valve clack structure of a 1500 DEG C ultrahigh-temperature valve comprises a valve rod and a valve clack body. The upper end of the valve clack body is connected with a convex lug through a flange, a runner inlet end in the convex lug is communicated with a concave pit in the valve clack body while a runner outlet end in the same is connected with a recycling end of an externally-connected cooling system, the concave pit is communicated with an inlet end of the externally-connected cooling system through a water cooling nozzle, the convex lug comprises an inner ring portion and an outer ring portion which are hermetically assembled into a whole, grooves are uniformly distributed in the outer circumferential face of the inner ring portion, holes in up-down arrangement are processed in the grooves, and upper-layer holes and lower-layer holes are formed in the whole periphery and all communicated with the inner surface of the inner ring portion. Due to the structure, direct scouring of a valve seat sealing face by a high-temperature medium is greatly reduced, and service life of the valve is prolonged, and running reliability of the valve is improved; heat transfer and thermodynamic calculation shows that a valve clack can run safely and reliably under a working condition of 1500 DEG C.

Description

technical field [0001] The invention belongs to the technical field of valve manufacturing, and relates to a structure of a valve disc in contact with a medium in a valve under ultra-high temperature conditions exceeding the melting temperature of metals, specifically a water-cooled structure that can meet the ultra-high temperature medium of 1500°C valve disc. Background technique [0002] For high-temperature valves with a lower temperature level of around 800 °C, there are valves made entirely of non-metal at home and abroad, but due to the properties of non-metal materials, they cannot meet the requirements of rapid cooling, rapid heating and high-pressure working conditions. At home and abroad, water-cooling measures are used to make the valve work normally, but the structure causes the heat loss of the medium to be too large, which will make the valve outlet medium fail to meet the test requirements, so it cannot be used. According to the current domestic and forei...

AI Technical Summary

Problems solved by technology

[0002] For high-temperature valves with lower temperature levels around 800°C, there are valves made of non-metal at home and abroad, but due to the properties of non-metal materials, they cannot meet the requirements of rapid cooling and rapid heating. and high pressure requirements

At home and abroad, there are water-cooling measures to make the valve work normally, but the structure causes the heat loss of the medium to be too large, which will make the medium at the valve outlet fail to meet the test requirements, so it cannot be used.

According to the current domestic and foreign relevant data, in the field of high temperature resistance, it is impossible to manufacture valves that can work safely under the conditions of ultra-high temperature, high pressure, and high speed at 1500 °C.

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