Methane safety pressure-limiting valve

Abstract

The invention discloses a methane safety pressure-limiting valve, which comprises a pressure-limiting exhaust pipe and an open container containing water, wherein one end of the pressure-limiting exhaust pipe is communicated with the methane chamber of a methane pool, and the other end of the pressure-limiting exhaust pipe extends to a place below the water surface in the open container; the methane chamber of the methane pool is communicated with the methane safety pressure-limiting valve; the methane pressure in the methane pool is limited by using the action of the water seal of the open container; when the methane pressure is within a control range, the methane is sealed under the action of the water seal; and when the methane pressure is overhigh and the water seal does not work, the methane escapes from the open container, so that the methane pressure in the pool is lowered, normal methane pressure is retained, and the safety hazards, such as blasting, caused by the overhigh methane pressure in the pool are prevented. In addition, the methane safety pressure-limiting valve can be mounted at a bottommost position of a methane pipe to collect the condensed water in the methane pipe, so water is supplied to the open container and the condensed water is prevented from flowing to a desulfurizer. The methane safety pressure-limiting valve can be made of waste plastic, the manufacture is simple, the cost is low, and the service life of the methane safety pressure-limiting valve is long.

Description

technical field [0001] The invention relates to a safety valve, in particular to a biogas safety pressure limiting valve. Background technique [0002] All biogas digesters should be equipped with safety valves to prevent safety accidents such as explosions caused by excessive biogas pressure in the ponds, and damage to biogas equipment and accessories. The existing safety valves are all metal valve bodies, using springs to adjust the pressure, the manufacturing process is complicated, the cost is high, and because the water vapor and sulfur in the biogas corrode the metal, the life of the safety valve is generally short. [0003] Therefore, it is necessary to design a simple safety valve, which can effectively limit the biogas pressure in the biogas digester, and is simple to manufacture, low in cost and long in life. Contents of the invention [0004] In view of this, the present invention provides a biogas safety pressure limiting valve, which can effectively limit the...

AI Technical Summary

Problems solved by technology

[0002] Biogas digesters should be equipped with safety valves to prevent safety accidents such as explosions caused by excessive biogas pressure in the ponds, and damage to biogas equipment and accessories.

The existing safety valves are all metal valve bodies, using springs to adjust the pressure, the manufacturing process is complicated, the cost is high, and because the water vapor and sulfur in the biogas corrode the metal, the life of the safety valve is generally short

Images