Ultrahigh-temperature angle valve

Abstract

A valve element of the ultrahigh-temperature angle type valve is mainly composed of a lower valve rod, a heat insulation pipe, a sealing layer and a connecting block. The sealing end of the lower valve rod is a cylindrical boss, the upper end of the lower valve rod is a threaded rod, the periphery of the lower valve rod is sleeved with a heat insulation pipe, the appearance of the heat insulation pipe at the sealing end of the lower valve rod is a spherical valve head, and the spherical valve head and the conical surface of the inner ring of the valve seat form a sealing pair; the cylindrical boss end of the lower valve rod is filled with zircon sand mixed with silica sol to serve as a sealing layer for sealing, and the sealing layer is seamlessly connected with the inner side of the heat insulation pipe. The lower valve rod is in threaded connection with the lower end of the connecting block after the upper ends of the heat insulation pipe are arranged in the pad; a heat insulation layer is arranged in the whole inner cavity of the valve body; and the valve seat is arranged on the heat insulation layer in the valve body. The valve element and the valve rod are integrated, modularized and easy to replace, the valve seat is of a nested structure, internal parts are compact in structure, the valve body is small in size, material selection is cheap, and cost is saved.

Description

technical field [0001] The invention belongs to the technical field of valves, and in particular relates to an ultra-high temperature angle valve. Background technique [0002] Ultra-high temperature valves are used in chemical industry, metallurgy, aerospace and other fields. Under normal circumstances, when the temperature of the working medium is as high as 1600°C or above, the valve core inside the high temperature valve will be burned or even melted quickly, the valve will not be sealed when it is opened and closed, and the valve will fail during use. major hazards in the pipeline. The traditional ultra-high temperature valve adopts water-cooling design in the valve core and valve stem, the structure is complex, the inner cavity of the valve body and the valve cover is large, and the sealing surface still needs to adopt other methods for heat insulation, the cost is high, and the installation space is relatively large. Larger and shorter lifespan. Contents of the in...

AI Technical Summary

Problems solved by technology

Under normal circumstances, when the temperature of the working medium is as high as 1600°C or above, the valve core inside the high temperature valve will be burned or even melted quickly, and the valve will not be able to seal when it is opened and closed, and the valve will fail during use. Major hidden dangers on the pipeline

The traditional ultra-high temperature valve adopts water-cooling design in the valve core and valve stem, the structure is complex, the inner cavity of the valve body and the valve cover is large, and the sealing surface still needs to adopt other methods for heat insulation, the cost is high, and the installation space is relatively large. large, short lifespan

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