Primary sealing device of compression plate type lightning protection oil storage tank

Abstract

The invention discloses a compressed plate type anti-lightning oil storage tank one-time sealing device, which comprises an annular compressed plate formed by sequentially overlaying a stainless steel seal plate, a breathable roofing underlayment and a stainless steel compressed spring plate, connection angles and a stainless steel connecting bolt. The inner end of the compressed plate is wrapped by an conductive rubber and is fixedly connected with a floating cover of an oil storage tank; the outer end part of the compressed plate is bent downwards; and the end face of the stainless steel seal plate closely clings to the inner wall of the oil storage tank under the elasticity function of the stainless steel compressed spring plate. According to the compressed plate type anti-lightning oil storage tank one-time sealing device provided by the invention, the compressed plate is reliably connected with the inner wall of the oil storage tank and the floating cover, and the breakover is favorable, so that an electric charge produced on the floating cover caused by lightning is guided into the inner wall of the oil storage tank through the compressed plate, and an effective anti-lightning function is realized; the stainless steel compressed spring plate plays a role in automatically returning the floating cover to the center; and the breakover between the floating cover and the compressed plate is favorable by utilizing materials such as a conductive paste and the conductive rubber, so that the electric charge produced on the floating cover caused by lightning can be beneficially guided into the inner wall of the oil storage tank quickly.

Description

technical field [0001] The invention relates to a floating roof sealing structure of an oil storage tank, in particular to a primary sealing device of a compressed plate type lightning protection oil storage tank. Background technique [0002] At present, the types of primary sealing devices for floating roofs of oil storage tanks are mainly soft foam seals, liquid-filled pipe seals, and steel sliding plate mechanical seals (section 8.9 of GB50341-2014). The main problems of the above-mentioned type of sealing device (refer to: spherical tank and large oil storage tank Chapter 5 P238~P246, edited by Xu Ying, Yang Yifan, Zhu Ping, etc., first edition in January 2005) are: [0003] (1) Soft foam seal: [0004] The foam material is easy to age, and the sealing effect will become worse and worse with the aging of the foam. After 5 years of use, the sealing effect will be greatly reduced; the inner wall of the oil storage tank and the floating roof caused by the deformation of t...

AI Technical Summary

Problems solved by technology

[0016] The technical problem to be solved by the present invention is to provide a compression plate type lightning protection storage tank primary sealing device. The problem of fire accidents caused by derivation; the problem of poor compensation ability for the large change in the annular gap between the inner wall of the oil storage tank and the floating roof caused by the deformation of the inner wall of the oil storage tank and the uneven settlement of the foundation; the failure of the entire seal caused by local damage, The waste formed after damage is more, which will cause the problem of secondary pollution of the environment

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