Heat insulation structure of high-temperature valve

Abstract

The invention relates to a heat insulation structure of a high-temperature valve. The heat insulation structure comprises a driving device, a valve rod, a valve body, a valve element, a support frame, a valve cap, a first anti-radiation plate and a second anti-radiation plate, wherein the upper end of the valve body is provided with the valve cap; the valve element is arranged in the valve body; the driving device is connected with the valve element through the valve rod; the support frame is arranged outside the valve rod; the top end of the support frame is connected with the driving device; the bottom end of the support frame is arranged on the valve cap; the first anti-radiation plate is arranged below the driving device and above the support frame; and the second anti-radiation plate is arranged on the support frame. The driving device and high-temperature surfaces at the periphery of the driving device are provided with the anti-radiation plates, a heat insulation gasket is arranged below the driving device and above the support frame, and the support frame is provided with the anti-radiation plates, so that the heat radiation of the high-temperature surface to the driving device is effectively reduced. A large enough heat radiating space is arranged between the driving device and a high-temperature pipeline, so that the heat conductivity is reduced; and the temperature at the driving device is lower than the highest service temperature, so that the performance reliability and life of the driving device of the valve are ensured.

Description

technical field [0001] The invention belongs to the technical field of valve design, and in particular relates to a high-temperature valve heat insulation structure. Background technique [0002] With the development of society and the advancement of science and technology, the temperature parameters of valves used in nuclear power, thermal power and petrochemical fields are continuously increasing. Valves are installed on high-temperature medium pipelines, and high-temperature medium produces a large amount of heat radiation to the surroundings. Electrical components, non-metallic components in valve drive devices Materials are prone to accelerated thermal aging or failure, rendering valve actuators incapable of function. Contents of the invention [0003] In view of the defects in the prior art, the purpose of the present invention is to provide a heat insulation structure for high temperature valves. Through the study of temperature conduction and heat insulation struc...

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Problems solved by technology

[0002] With the development of society and the advancement of science and technology, the temperature parameters of valves used in nuclear power, thermal power and petrochemical fields are continuously increasing. Valves are installed on high-temperature medium pipelines, and high-temperature medium produces a large amount of heat radiation to the surroundings. Electrical components, non-metallic components in valve drive devices Materials prone to accelerated thermal aging or failure, rendering valve actuators incapable of function

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