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large oil storage tank

A technology for oil storage tanks and storage tanks, which is applied in the field of petrochemical equipment, can solve the problems of high stress of storage tank wall plates and cracked weld seams, and achieve the effects of reducing bending stress, improving stress, and avoiding welding residual stress.

Active Publication Date: 2021-08-31
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] An object of the present invention is to provide a large oil storage tank, which solves the problem of high stress at the large fillet weld connecting the tank wall and bottom plate, so as to avoid the weld cracking due to excessive stress

Method used

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Examples

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Embodiment

[0022] Such as figure 1 As shown, a large oil storage tank has a tank top 1, a tank wall 2, a tank bottom center plate 5, an "L"-shaped transition connection ring 3 between the tank bottom 5 and the tank wall 2, and the "L"-shaped transition connection The ring 3 has a horizontal annular edge section 31 , an arc-shaped transition section 32 and a vertical cylindrical section 33 , "L" shaped reinforcement ring 6 . The shape and size of the "L" type transition connection ring 3 and the "L" type reinforcement ring 6 are the same.

[0023] The horizontal annular edge section 31 of the "L"-shaped transition connecting ring 3 is butt-welded with the middle plate 5 of the tank bottom, and a backing plate 4 is provided under the butt weld. The vertical cylindrical section 33 of the "L" type transition connecting ring is butt-welded with the tank wall 2 . The vertical cylinder section of the "L" type reinforcement ring 6 outside the tank wall is fillet welded with the tank wall 2 and...

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Abstract

The invention discloses a large oil storage tank. By designing the connection between the tank wall and the tank bottom of a large oil storage tank as an "L"-shaped transition connection ring, the structural feature is transformed from a "T"-shaped geometric discontinuity to a curved arc transition, and the original tank bottom is cancelled. The large fillet weld connected to the tank wall; especially the "L"-shaped reinforcement ring is provided outside the tank wall. The horizontal annular edge section of the reinforcement ring is in contact with the foundation. Since the foundation provides a certain supporting force, it can further reduce the internal pressure of the tank. The bending moment caused by the deformation of the bottom plate, thereby reducing the bending stress of the tank bottom plate. The large oil storage tank of the present invention not only significantly reduces the bending stress at the joint between the tank bottom and the tank wall of the large oil storage tank, but also avoids the welding residual stress caused by the welding seam, thereby realizing the intrinsically safe design and ensuring the safety of the storage tank Safe to run.

Description

technical field [0001] The invention belongs to the field of petrochemical equipment, in particular to a large petroleum storage tank. Background technique [0002] Large oil storage tanks refer to volumes of 5×10 4 m 3 Oil tanks with a size of 10 and above have the characteristics of saving costs, reducing floor space, facilitating operation and management, and reducing the length of oil tank accessories and pipelines. Large-scale oil storage tanks are vertical cylindrical steel welded oil tanks. The top of the storage tank mostly adopts an external floating roof structure. There is no fixed connection between the bottom plate and the foundation. It is directly located on the surface of the foundation and is relatively stable by the friction between the bottom plate and the foundation. [0003] Large oil storage tanks are mainly composed of tank bottom, tank wall, tank roof and tank accessories. The bottom of the tank is divided into a ring-shaped edge plate and a middle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65D90/08B65D90/02
CPCB65D90/02B65D90/08
Inventor 石磊王晓霖王勇李明奚旺吕高峰
Owner CHINA PETROLEUM & CHEM CORP
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