Combined water-cooling high-temperature wedge type single-disc gate valve

Abstract

The invention discloses a combined water-cooling high-temperature wedge type single-disc gate valve. The combined water-cooling high-temperature wedge type single-disc gate valve comprises a valve body, a gate plate, a valve rod and a valve cover, wherein the gate plate is arranged in a chute in the middle part of the valve body; the upper end of the gate plate is connected with the valve rod; the upper half part of the valve rod is matched with sealing fillings in a sealing box arranged at the upper part of the valve cover, stretches out from a filling gland arranged at the upper part of the sealing box and then is connected with an actuator through the matching of a T-shaped nut on a support arranged at the upper end of the valve cover; the actuator drives the gate plate to do up-and-down motion so as to realize turning on and off of a valve; the valve cover on the valve body is fixed through a first fastener; a combined annular water-cooling heat-dissipation water tank is arranged on the outer part of the valve cover; circulating water is arranged in the water tank. According to the structure designed by the invention, the neck part of the valve cover is provided with a heat dissipation device, the temperature in the position of a packing box is obviously reduced, the using performance of fillings is directly enhanced, the service life of the fillings is prolonged, the sealing stability of the fillings is increased, and the possibility of causing sealing leakage is obviously reduced.

Description

Technical field [0001] The invention relates to a high temperature wedge gate valve, in particular to a composite water-cooled high temperature wedge single gate valve. Background technique [0002] In modern liquefied petroleum production pipelines, high-temperature steam transmission pipelines of chemical plant combustion towers, boiler high-temperature medium transmission, and natural gas high-temperature medium transmission pipelines, the automatic control of the process of the system under high temperature conditions from 650℃ to over 800℃ , The high temperature gate valve plays a very important role. In this process control, the flow parameters of the medium should be opened and closed according to real-time data signals. The sensitivity and reliability of the control action, the sealing performance between the valve stem and the packing, and the life are crucial. Because the lower part of the stem part of the high-temperature gate valve bonnet is directly connected to th...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a compound water-cooled high-temperature wedge-type single gate valve, which solves the problem of poor heat dissipation of high-temperature valves and effectively solves the shortcomings of the original traditional technology

Images