A hydraulic high temperature thermal valve

Abstract

A hydraulic high-temperature heat valve comprises a valve stem, a valve clack, a valve body and a bonnet. The valve stem and the valve clack are provided with cooling systems. A valve stem water-cooling pipe is disposed within the valve stem. An inner cavity of the valve stem water-cooling pipe forms an inflow passage; a gap between the outer wall of the valve stem water-cooling pipe and the valve stem forms a return passage; the lower end of the valve stem water-cooling pipe is provided with a water outlet; the valve clack is formed by fixedly connecting an upper portion and a lower portion; the upper portion of the valve clack is fixedly connected to the head of the valve stem; an inner cavity of the lower portion of the valve clack is a circulating water cavity; the circulating water cavity is divided into a cooling cavity and a reflow cavity by a valve clack water guide plate fixedly connected over a water outlet of the valve stem water-cooling pipe; the water outlet of the valve stem water-cooling pipe is provided within the cooling cavity; the reflow cavity is communicated with the return passage. The valve clack is in the cooling structure, thus the valve clack can be reliably sealed for a long time under the action of high temperature 900K.

Description

Technical field [0001] The invention belongs to the technical field of valve manufacturing, and in particular relates to a hydraulic high-temperature thermal valve that is used safely under high-temperature and ultra-high-speed working conditions. Background technique [0002] With the rapid development of science and technology, the application range of hydraulic high temperature valves is becoming more and more extensive. From the production of chemical industry to national defense scientific research units, high temperature valves of different pressures, calibers and performances are needed. However, the existing structural design of these valves has no cooling discs, and long-term heating of the discs leads to excessively high disc temperatures and sealing failures, especially unable to meet the requirements of such valves in high-temperature and ultra-high-speed wind tunnels. Summary of the invention [0003] The invention provides a hydraulic high temperature thermal valve w...

AI Technical Summary

Problems solved by technology

However, the existing structural design of these valves has no cooling for the valve disc, and the long-term heating of the valve disc will cause the temperature of the valve disc to be too high and the seal to fail, especially unable to meet the requirements of high-temperature ultra-high-speed wind tunnels for this type of valve.

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