Method for detecting sealing performance of floating plate in storage tank

Abstract

The invention discloses a method for detecting a sealing performance of a floating plate in a storage tank, and relates to the field of storage tank sealing detection. The detecting method comprises the following three steps of (1) preparing before detecting; (2) detecting deflation; and (3) analyzing and processing data. The method for detecting the sealing performance of the floating plate in the storage tank provided by the invention has the beneficial effects that (1) the overall sealing performance of the floating plate in the storage tank can be detected, and before the storage tank is put into use, the method is adopted for detecting the sealing performance of the floating plate in the storage tank; (2) nitrogen is adopted as a detection medium, so that the environment cannot be polluted, and the body health of an inspector cannot be harmed; and (3) the detecting method is simple, practical and convenient, and whether a measuring point part is leaked or not can be judged throughadopting a nitrogen detector for detecting each measuring point and recording data for comparison and analysis.

Description

technical field [0001] The invention relates to the field of detection of the inner seal of a storage tank, in particular to a method for detecting the sealing performance of a floating plate in a highly efficient seal of a storage tank. Background technique [0002] In the petrochemical industry, leakage generally exists in all links of production, processing, storage, transportation and even sales. Most materials are flammable, explosive or poisonous and harmful. Once a fire occurs due to leakage, the consequences are often very serious, and at the same time it will cause serious pollution to the environment and bring significant economic losses to the enterprise. [0003] In recent years, with the country's emphasis on environmental protection, the country promulgated a new VOCs emission implementation standard in 2015, which raised the VOCs emission standard requirements. The "GB 31570-2015 Petroleum Refining Industry Pollutant Discharge Standard" and "GB 31571-2015 Pet...

AI Technical Summary

Problems solved by technology

The floating disc is assembled in the tank, and the overall sealing performance of the assembled floating disc and seal cannot be confirmed by this method

[0006] The light transmission test is to use light beams to irradiate the surface of the floating plate from the upper and lower parts of the floating plate, or to irradiate the leak-prone parts such as the tank wall and the edge seal of the floating plate with the light beam, and observe whether there is light passing through. If there is light, it means that the sealing not good

The seal of the floating plate is usually sealed with a bladder-type tongue-type or elastic tongue-type scraper and other structures that are in close contact with the tank wall to achieve two seals. After the floating plate is assembled, the leaking parts that are prone to occur include the floating plate accessories (manhole, Breathing valve, support column), guide column, edge seal and splicing seam of the floating tank, when testing these parts, due to the limited scattering of the light beam, the light transmission test cannot guarantee that the test results fully meet the requirements

Images