Cooling device of 1500 DEG C ultrahigh-temperature valve body

Abstract

A cooling device of a 1500 DEG C ultrahigh-temperature valve body comprises a medium inlet passage, a valve body middle port position, a valve cover and an end cap. The medium inlet passage and the valve body middle port position are arranged on the valve body and connected with each other, a high-temperature ceramic heat-insulating lining cooling structure is arranged on the medium inlet passage on the valve body, a valve body middle port is provided with a valve body middle port water cooling system, and requirements on safe and reliable running under a working condition of 1500 DEG C and 5.0 MPa are met. Part of heat of a high-temperature medium is absorbed by a midbody water cooling lower portion where pressure drop is formed, and pressure and temperature of the medium are further lowered; due to the structure, direct scouring of a valve seat sealing face by the high-temperature medium can be greatly reduced, service life of the valve is prolonged, and running reliability of the valve is improved.

Description

technical field [0001] The invention belongs to the technical field of valve manufacturing, and relates to a valve used for working under ultra-high temperature conditions exceeding the melting temperature of metals, in particular to a cooling device for a valve body that can meet the requirements of 1500°C ultra-high temperature medium. 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, there are water-cooling measures to make the valve work normally, but this will cause too much heat loss of the medium, and the medium at the outlet of the valve will not meet the test requirements, so it cannot be used. According to the current domestic and foreign relevant data, in the field of ...

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Problems solved by technology

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

At home and abroad, there are water-cooling measures to make the valve work normally, but this will cause too much heat loss in the medium, and the medium at the outlet of the valve will not 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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