Large double-channel sealing valve not prone to deformation

Abstract

The invention relates to the technical field of sealing valves, and discloses a large double-channel sealing valve not prone to deformation. The sealing valve comprises a sealing valve main body; valve body plates are arranged on two sides of one end of the sealing valve main body correspondingly; a rotating shaft part is mounted at one end of each valve body plate; each rotating shaft part is composed of a transmission shaft, a bearing seat, a bearing and a driving force arm; rotating connecting rods are arranged at one ends of the rotating shaft parts; one ends of the side walls of the valve body plates are fixedly connected with sealing parts; channels of the valve body plates are provided with installation grooves; the sealing parts are fixedly installed in the installation grooves; each sealing part is made of a flexible material with a metal protection layer; and a driving component of the large double-channel sealing valve is an electric actuator. According to the large double-channel sealing valve not prone to deformation, it is guaranteed that the sealing performance of the sealing valve is good, internal leakage is not larger than 0.1%, meanwhile, the large double-channel sealing valve has the advantages of being high in structural strength and not prone to deformation, it is guaranteed that ash deposition of the sealing valve does not cause improper opening and closing or jamming, the sealing valve can be manufactured according to the shape of the valve, and the area of a channel opening is guaranteed to the greatest extent.

Description

Technical field [0001] The present invention relates to the field of sealing valve, in particular a large dual-channel sealing valve that is not easily deformed. Background technique [0002] Electricity, metallurgy, cement industry residual power generation, desulfurization, denitration high temperature large diameter flue gas pipeline work ambient temperature at 0 ° C ~ 500 ° C, the internal leakage requirements are generally in 0 ~ 0.2%, large diameter (ordinary 2500mm or more Can reach 7500mm), is generally used instead of the welding ventilation butterfly valve, but the ventilation butterfly valve leakage is very large, generally between 1.5% ~ 2.5, can not meet low leak requirements; if used in large diameter national standard universal sealing valve, price is higher Several or even ten times, the specifications are not full. At present, there is a lack of reliable, high-temperature large-caliber, high-temperature large-caliberless flue gas pipeline flue gas, which we propo...

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Problems solved by technology

[0002] Electric power, metallurgy, cement industry waste heat power generation, desulfurization, denitrification high-temperature large-diameter flue gas pipelines have a working environment temperature of 0°C to 500°C, and the requirements for internal leakage are very high. Up to 7500mm), currently welding ventilation butterfly valves are generally used instead, but the leakage rate of ventilation butterfly valves is very large, generally between 1.5% and 2.5, which cannot meet the low leakage requirements; if a large-caliber national standard general sealing valve is used, the price will be higher Several times or even ten times, the specifications are not complete

At present, there is a lack of a reliable and cost-effective high-temperature large-caliber flue gas pipe for flue gas regulation and cut-off in China. Therefore, we propose a large double-channel sealing valve that is not easily deformed.

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