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Primary sealing device for floating roof storage tank and its installation method

A floating roof storage tank, secondary sealing technology, applied in packaging, transportation and packaging, containers and other directions, can solve the problems of tank wall deformation, insufficient elasticity of the sealing structure, etc., to prevent oil and gas volatilization, eliminate oil and gas space, reduce fire effect of accident

Active Publication Date: 2018-03-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to propose a primary sealing device for floating roof storage tanks, to solve the problem of insufficient elasticity of the existing foam sealing structure, and to be able to meet the requirements of greater deformation of the storage tank wall

Method used

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  • Primary sealing device for floating roof storage tank and its installation method
  • Primary sealing device for floating roof storage tank and its installation method
  • Primary sealing device for floating roof storage tank and its installation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] combine figure 1 As shown, the primary sealing device for a floating roof storage tank includes a support 11 , a support rod 10 , a torsion spring 13 , a rubber band 2 , a sponge 3 , a fixing plate 7 , an upper sealing rubber band 16 and a lower sealing rubber band 4 . in,

[0039] A bolt hole and a No. 1 shaft hole are provided on the support 11 . Wherein, the bolt hole is located at the rear side of the support 11 , through which the support 11 can be installed on the top of the edge plate of the floating disc 12 . The No. 1 shaft hole is located in the middle of the front end of the support 11 .

[0040] The main function of the support 11 is to support the entire sealing device. Specifically, the torsion spring 13 and the upper end of the support rod 10 are jointly installed on the support 11 through a connecting shaft 9 extending into the No. 1 shaft hole.

[0041] The structure of torsion spring 13 is as Figure 7 and Figure 8 As shown, its function is that...

Embodiment 2

[0055] The installation method of the primary sealing device for the floating roof storage tank in this embodiment 2 is aimed at the primary sealing device for the floating roof storage tank in the above embodiment 1. The primary sealing adopts the immersion type installation method, and the specific installation steps are as follows:

[0056] (1) Transport all parts of the primary sealing device for the floating roof storage tank above the floating plate 12;

[0057] (2) Rubber strap 2 and sponge 3 are assembled above the floating disc 12;

[0058] (3) The rubber backing plate 8 is installed on the side of the support plate 10 lower end close to the edge plate of the floating plate 12, and on the other side of the support plate 10, the lower end of the support rod 10 is connected with the fixed plate by the connecting shaft 9; The plate 7 should be centered on the connecting shaft 9, and can be turned up and down, so that the fixed plate 7 can be kept parallel to the tank wal...

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Abstract

The invention discloses a primary sealing device for a floating roof tank and a mounting method of the primary sealing device. The primary sealing device is mounted between gaps at the edge of a floating plate; when the edge clearance of the floating plate is not changed, the sealing device is in a favorable fitting state with a wall of the tank under the effect of the elasticity of a sponge and a torsion force of a torsion spring; when the edge clearance of the floating plate is reduced, being supported by a rubber bearing pad, the sealing device is always in a perpendicular state, but the sponge is stressed to be in compressive deformation, so that the situation that the sealing device and the wall of the tank are in the favorable fitting state is guaranteed; and when the edge clearance of the floating plate is enlarged, the compressive force between the sealing device and the wall of the tank is reduced, and at this moment, a supporting rod can be bounced upwards under the effect of the torsion force of the torsion spring, so that a rubber wrapping belt and the wall of the tank are always in a close fitting state. When the supporting rod rotates, a lower sealing rubber belt can change in positions up and down along with the rising and falling of a fixing plate, however, no matter what condition the sealing device is in, the lower sealing rubber belt can always fit with the liquid level, so that the purpose of preventing petroleum gas from volatilizing is achieved.

Description

technical field [0001] The invention belongs to the technical field of oil and gas storage and transportation, in particular to a primary sealing device for a floating roof storage tank and an installation method thereof. Background technique [0002] The edge seal of the floating plate is one of the most important devices for controlling the volatilization of oil and gas in large crude oil storage tanks. After using the seal, the volatilization loss of oil can be greatly reduced. The edge seal of the floating plate is mainly composed of two parts: primary seal and secondary seal. The primary seal is installed inside the annular space between the floating plate and the tank wall, usually in direct contact with the oil. In order to further reduce the evaporation loss of oil products, a set of sealing device is added on top of the original primary seal, that is, the secondary seal. [0003] Primary seals are mainly divided into three types according to different structures: ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65D88/46
CPCB65D88/46
Inventor 张玉平陶彬贾光甄永乾张卫华
Owner CHINA PETROLEUM & CHEM CORP