High temperature by-pass valve

Abstract

The invention relates to a high-temperature by-pass valve which is suitable for a burning furnace outlet, a normal open inlet pipe and a normal open outlet pipe are arranged on a valve cylinder body, a high-temperature inlet pipe is arranged on the valve cylinder body, a valve plate component which can spasmodically open and close the outlet end of the high-temperature inlet pipe is arranged inside the valve cylinder body, a valve rod is arranged on the valve plate component, a valve cover component is arranged on the valve cylinder body of the top end portion of the valve rod, the valve cover component is equipped with a support component, the support component is internally connected with a lead screw, an elastic anti-dust sleeve is coated outside the lead screw, the bottom end portion of the lead screw is connected to the top end portion of the valve rod, and the support component is equipped with an actuating mechanism for driving the valve rod to lift. The high-temperature by-pass valve has long service life, avails without an additional cooling system, can avoid high-temperature oxidation of filling materials and high-temperature locking of bearings, enables cooling air in astraight pipe formed by the normal open inlet pipe and the normal open outlet pipe to constantly cool the valve plate, prolongs the service life of the valve plate, and strengthens the stress and thestrength of the material of the valve plate.

Description

Technical field [0001] The invention relates to a valve, in particular to a high-temperature bypass valve suitable for use at the outlet of an incinerator. Background technique [0002] The ultra-high temperature bypass valve used in the ultra-high temperature flue gas produced at the outlet of the incinerator in the sulfuric acid industry. Because the main feature of the medium is ultra-high temperature flue gas, the temperature of the flue gas can reach about 1200 ℃, but it must be cooled to about 400 degrees. In the conversion section and enter the sulfuric acid production section, most of the high-temperature butterfly valves placed at the outlet of the furnace were previously used. Because the cooling of the high-temperature butterfly valve is difficult to achieve, it is easy to cause the valve to jam at high temperature or the stress of the valve material at high temperature Extreme reduction leads to pin fracture and high-temperature oxidation of the filler. Basically, wh...

AI Technical Summary

Problems solved by technology

[0002] The ultra-high temperature bypass valve used in the ultra-high temperature flue gas produced at the outlet of the incinerator in the sulfuric acid industry, because the main characteristic of its medium is ultra-high temperature flue gas, the temperature of the flue gas can reach about 1200 ° C, but it must be cooled to about 400 ° C Carry out the transformation section and enter the sulfuric acid production section. Most of the high-temperature butterfly valves placed at the furnace outlet were used in the past. Because the cooling of the high-temperature butterfly valve is difficult to achieve, it is easy to cause the high-temperature jamming of the valve or the stress of the valve material at high temperature. Extremely reduce the occurrence of pin breakage and high temperature oxidation of fillers

Basically, what is done well in China is to replace a valve every year, which is a severe test for on-site maintenance and factory investment costs.

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