Hydraulic pressure floating hood type methane tank

Abstract

The invention discloses a hydraulic pressure floating hood type methane tank. A hood body comprises a hood cover, a hood wall and an air tube and is coated on the inner bottom of a container; a distance interlayer is arranged between the hood wall and the wall of the container, the hood body is provided with a device for leading a material liquid into the hood, a device for controlling the height of a plane in hood covers of air storage chambers and a liquid level to be larger than zero, a positioning device for enabling the hood cover to freely float up and down and a device for discharging residue; the height of a feeding port is higher than a zero-pressure liquid surface, and the height of the wall of the hood is at least equal to a value which is obtained via algorithm as follows: a vertical upward cross stress area impulses the maximum output methane pressure in the gas storage chambers and divides the product of an average area of liquid surface cross hood wall and liquid density. According to a buoyancy principle and a simple structure, technical problems including high manufacturing cost of methane tanks, troubles of automatic residue discharging and automatic pressure stabilizing, less gas storage capacity and the like in the prior art are solved. Therefore, people can process a large amount of straw, household garbage and waste with low cost, and meanwhile, reproducible energy firedamp can be obtained.

Description

technical field [0001] The invention relates to the application of buoyancy principle to construct an anaerobic digestion device for biogas production. Background technique [0002] There are many types of biogas digesters in the prior art, and our country focuses on the development of "conventional water pressure type" and "strong backflow" and other types of biogas digesters stipulated by national standards, and provides financial support. According to reports, due to the mature technology of hydraulic biogas digesters, it has the following advantages: [0003] (1) The mechanical performance of the pool body structure is good, and the bearing capacity of the soil is fully utilized, so labor and materials are saved, and the cost is relatively low. [0004] (2) It is suitable for filling a variety of fermentation materials, especially a large amount of crop straw, which is very beneficial to the accumulation of manure in rural areas. [0005] (3) In order to facilitate fre...

AI Technical Summary

Problems solved by technology

[0026] Purpose of the invention: 1. To provide a hydraulic floating cover biogas digester to overcome the four technical problems of high cost, inability to automatically discharge slag and automatically stabilize pressure, and less gas storage capacity in the existing pool construction technology; 2. To provide a hydraulic floating cover type biogas digester Methods of increasing or decreasing the maximum output biogas pressure of biogas digesters

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