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Method and apparatus for eliminating secondary arc by floater

A secondary arc, floating roof tank technology, applied in packaging, transportation and packaging, containers and other directions, can solve the problems of floating roof tank hazards, no mention of secondary arc, no mention of lightning secondary arc protection measures, etc. Achieve the effect of eliminating secondary arcs and eliminating bound charges

Inactive Publication Date: 2006-08-23
北京昌晖德石化技术有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] 3. Harm of bound charge / secondary arc to floating roof tank
[0016] 4. The electrical path and impedance between the floating plate and the tank
[0037] 6. The existing technical specifications have not yet mentioned the secondary arc
However, in these norms and standards, there is no mention of the phenomenon of secondary arc caused by lightning and the protective measures, nor has the method and device for eliminating the secondary arc of floating roof tanks been proposed.

Method used

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  • Method and apparatus for eliminating secondary arc by floater
  • Method and apparatus for eliminating secondary arc by floater
  • Method and apparatus for eliminating secondary arc by floater

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Embodiment Construction

[0054] like figure 1 and figure 2 As shown, in the background technology, the charging of the cloud layer to the earth, the generation of the bound charge and the secondary arc, and the hazards of the fire caused by the floating roof tank have been described in detail, so they will not be repeated. In order to solve the problem of bound charge / secondary arc on the floating plate, the present invention proposes a method and device for eliminating the secondary arc of a floating roof tank, such as image 3 and Figure 4 As shown, the method for eliminating the secondary arc of a floating roof tank is to use the electrostatic conduction device of the floating roof tank fixed on the top of the floating roof tank, and connect one end of its grounding cable 1A to the device, and the grounding cable 1A The other end of the floating plate is fixed on the floating plate. When the floating plate is lowered, the grounding cable can be lowered with the floating plate and automatically ...

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Abstract

A method for eliminating the secondary arc of the cover-floating tank features that an electrostatic conductive device fixed to the floating cover of the tank is connected with the grounded cable to form a gool electric loop. Said electrostatic conductive device is composed of the supporting frame fixed to tank body, supporting axle, grounded cable reel, spring assembly, current-guiding ring, elastic current-guiding piece sliding on said current-guiding ring, grounded cable, etc.

Description

technical field [0001] The invention relates to a floating roof tank used for oil storage, in particular to a method and a device for eliminating secondary arcs in a floating roof tank. Background technique [0002] As a floating roof tank for oil storage, it mainly includes tank body, floating plate and so on. Floating roof tanks are generally in good condition during use, and fire accidents are rarely seen. However, there are still fires caused by lightning strikes. The reasons are as follows: [0003] 1. The bound charge / secondary arc is the main cause of lightning strike fire [0004] It is not uncommon for some floating roof tanks at home and abroad to catch fire due to lightning strikes. Although the number is small, the losses are serious, which has attracted the attention of production and safety departments. In 1990, a 670,000-barrel light crude oil floating roof tank in Nigeria burned down due to a lightning strike. In 1997, No. 102 50,000m3 crude oil floating ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65D90/46B65D88/34
Inventor 孙元
Owner 北京昌晖德石化技术有限责任公司