All-weather burning-resistant breather valve device

Abstract

The invention provides an all-weather burning-resistant breather valve device. The all-weather burning-resistant breather valve device comprises a main valve body; the burning-resistant fire-retardant assembly is arranged at an opening in the upper end of the main valve body; the pressure valve is formed in the main valve body, and a pressure valve air chamber and a common air chamber are formed on the upper side and the lower side of the pressure valve respectively; the vacuum valve is arranged in the common air chamber and fixedly connected to the side wall of the main valve body, the vacuum valve comprises a vacuum valve air chamber, and a detonation fire-retardant disc is arranged on the side portion of a vacuum valve body; according to the all-weather burning-resistant breather valve device, when the pressure of gas in the storage tank exceeds the preset pressure of the pressure valve, the pressure valve is opened, so that the gas in the storage tank sequentially enters the common gas chamber and the pressure valve gas chamber and then is discharged through the burning-resistant fire-retardant assembly, and when the pressure of the gas in the storage tank is negative and is lower than the preset pressure of the vacuum valve, the pressure valve is opened. The vacuum valve is opened, so that outside air is sucked into the vacuum valve air chamber from the detonation fire-retardant disc and then enters the common air chamber through the vacuum valve to enter the storage tank, and therefore the gas pressure of the storage tank is supplemented.

Description

[0001] Cross References to Related Art [0002] This application claims the priority of the Chinese patent application CN 202011010005.4 entitled "An all-weather fire-resistant breathing valve for storage tanks" filed on September 23, 2020, the entire contents of which are incorporated herein by reference. technical field [0003] The invention belongs to the technical field of storage tank safety devices, and in particular relates to an all-weather fire-resistant breathing valve device. Especially all-weather fire-resistant breathing valve devices for storage tanks. Background technique [0004] As one of the safety accessories of the storage tank, the breather valve is used to reduce the evaporation loss of volatile liquid in the normal pressure and low pressure storage tanks. The breathing valve can not only maintain the air pressure balance in the tank, ensure that the storage tank is not damaged under overpressure and negative pressure, but also use the pressure beari...

AI Technical Summary

Problems solved by technology

Therefore, the addition of ordinary flame arresters to ordinary breathing valves cannot meet the international standard of burning resistance of 2 hours. Such products are blank in China and have not yet been applied.

[0006] At present, there are major safety hazards in the breathing valves used on the top of storage tanks in China. Therefore, there is an urgent need for an all-weather fire-resistant breathing valve for storage tanks that can solve safety hazards and meet safety and environmental protection requirements to ensure personal and property safety.

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