Maintenance-free tank body integrated positive/negative-pressure protector

Abstract

The invention discloses a maintenance-free tank body integrated positive / negative-pressure protector which comprises a cylinder which is integrated with the tank body, wherein the upper part of the cylinder is positioned outside the tank body, and the lower part of the cylinder is positioned inside the tank body; the bottom of the cylinder is provided with a bottom plate; the bottom plate is connected with an overflow communicating pipe which communicates with the inside of the tank body; the upper part in the cylinder is provided with a top plate; the top plate is connected with a constant-pressure diode; and the cylinder is filled with a sealing fluid. The overflow communicating pipe directly communicates with the inside of the tank body, the liquid in the humid gas inside the tank body can supplement the sealing fluid, and the excessive outside rain water after entering the sealing fluid can automatically overflow to maintain and protect the stable pressure. The integration is inside the tank body, thereby avoiding the evaporation loss caused by solar radiation and the failure of the sealing fluid due to icing in winter. The liquid level lower limit sensing pipe arranged in the protector is utilized to monitor the liquid level lower limit and prompt the fluid supplementation.

Description

technical field [0001] The invention relates to a positive and negative pressure protection device for a large storage tank, in particular to a positive and negative pressure protection device for an anaerobic fermentation reactor in a biogas project, specifically an integrated maintenance-free tank integrated positive and negative pressure protector. Background technique [0002] In recent years, the development of biogas production technology by anaerobic fermentation of livestock and poultry manure has provided technical support for effectively solving the pollution of livestock and poultry breeding and developing clean energy. During the normal operation of the anaerobic fermentation reactor, the pressure in the reactor often fluctuates due to the influence of the incoming and outgoing materials, changes in the external temperature, and fluctuations in the gas system. Set positive and negative pressure protection devices. There are several types of positive pressure an...

AI Technical Summary

Problems solved by technology

There are several types of positive pressure and negative pressure protection devices currently used, such as mechanical and water seals, but they are all independent, with the disadvantages of high investment and complicated management, and the mechanical protector also has problems of rust failure and low service life. The water seal protector has the problem of large footprint and freezing in low temperature environment

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