Air tightness detection method of upper pond body on methane pond

Abstract

The invention discloses an air tightness detection method of the upper pond body of a methane pond. The method comprises the following steps of: (A) testing system construction, wherein the testing system comprises a testing slot, an air guide pipe and a pressure guide pipe, as well as a positioning frame used for positioning the upper pond bodies, one ends of air guide pipe and a pressure guide pipe are fixed to the center of the bottom of the testing slot, the wall of the testing slot is provided with an overflow pipe, and the other ends of the air guide pipe and the pressure guide pipe are respectively connected and arranged on an air pump and a U-shaped pressure gage outside the testing slot; (B) testing process: (a) hanging the upper pond body into the center of the bottom of the testing slot with the opening upside down, and positioning the upper pond body by using the positioning frame; (2) adding water into the testing slot to the position of the overflow pipe; (3) charging air into the upper pond body and stopping charging air until a first bubble emits from an annular sealing edge of the upper pond body; and (C) result judging: maintaining for 30 minutes after charging the air, when the pressure intensity is reduced to be lower than or equal to 3 percent, the air tightness of the upper pond body is qualified. The detection method is simple and quick and realizes in-plant pressure test quick determination for industrially producing methane ponds.

Description

technical field [0001] The invention relates to a method for detecting air tightness of a biogas digester, in particular to a method for detecting air tightness of an upper body of a biogas digester, and aims to provide a rapid detection of air tightness in a factory in the industrial production of a biogas digester. Background technique [0002] Existing biogas digester manufacturing technologies are divided into ordinary concrete pouring ponds or concrete block prefabricated ponds, as well as FRP integral ponds and plastic block manufacturing field assembly ponds. For the quality inspection methods of the above pool types, at present, the biogas digester is installed in place first, and then tested. If the airtightness does not meet the standard, it will be sealed separately. The specific method of detection is: add water to the biogas digester after sealing construction to submerge the upper edge surface of the lower opening of the water pressure room, seal the manhole, c...

AI Technical Summary

Problems solved by technology

[0003] The main technical defects of the above technical solution are: 1) The pressure test takes 24 hours, and the pressure test time period is too long, which cannot meet the requirements of accurate and fast quality inspection of factory manufacturing; 2) If the pressure test fails, it cannot be ruled out that the connection Whether it is caused by surface sealing defects or due to leakage of the pool material, exclusion testing is still required

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