Diaphragm for methane tank and top pressure type methane tank thereof

Abstract

The invention discloses a diaphragm for a methane tank and a top pressure type methane tank thereof and belongs to the technical field of methane tanks. The diaphragm for the methane tank is of a platy structure, wherein at least one liquid passing pipe is arranged on the diaphragm and is protruded towards the same side of the diaphragm. The top pressure type methane tank comprises a main tank, a concrete foundation and a protecting cover, wherein the main tank is fixedly arranged on the concrete foundation; the protecting cover is fixedly arranged on the upper part of the main tank in a sealing way; a gas overflow pipe is arranged on the protecting cover; the diaphragm is fixedly arranged on the inner wall of the main tank in a sealing way; the projecting liquid passing pipe is toward the concrete foundation; the liquid surface in the main tank is higher than the plane of a lower opening of the liquid passing pipe; and a gas guiding pipe extending out of the main tank is arranged on the diaphragm. According to the top pressure type methane tank, the surface area of the planar diaphragm is a half of that of a spherical collecting bag, and more material cost of a component, labor cost and mechanical energy consumption operation cost are saved.

Description

technical field [0001] The invention relates to a biogas digester, in particular to a top-pressure biogas digester. Background technique [0002] At present, large, medium and small biogas digesters except for household biogas digesters generally have anaerobic fermentation tanks and gas storage tanks at the same time, regardless of the structure and material changes, in order to realize the functions of gas production and gas storage, and the application of additional Only under the condition of atmospheric pressure can the requirements of normal use be met. [0003] Up to now, the large, medium and small biogas digesters that exceed the capacity of household biogas digesters not only rely on the function of an anaerobic fermentation tank to realize gas production and storage, but also can increase the pressure of biogas to meet the normal use requirements. There is a patent of our company: the application number is : 201220096315.7, named: a top-pressure large-capacity bi...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the above-mentioned problems, to provide a diaphragm for biogas digesters with simple structure, low cost, convenient installation and convenient transportation, and to use the diaphragm on top-pressure biogas digesters without being affected by the deformation of the diaphragm , can realize the automatic lifting of material liquid, automatic collection, cycle pressurization, and meet the air pressure of biogas transportation and use without external mechanical pressurization

Images