Lining double-layer oil tank structure and transformation method of single-layer oil tank

A double-layer oil tank and inner lining technology is applied in the field of transformation of inner-lined double-layer oil tank structure and single-layer oil tank to achieve the effect of solving the impact

Pending Publication Date: 2021-06-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a double-layer lined oil tank structure and a single-layer oil tank transformation method, which can solve the problem of upgrading and transforming single-layer steel oil tanks into double-layer oil tanks in gas stations without removing the original reinforcement ribs. Tank problems, including internal leak repair of in-service steel oil tanks, treatment of manholes and reinforcements, etc.

Method used

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  • Lining double-layer oil tank structure and transformation method of single-layer oil tank
  • Lining double-layer oil tank structure and transformation method of single-layer oil tank
  • Lining double-layer oil tank structure and transformation method of single-layer oil tank

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Experimental program
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Effect test

Embodiment 1

[0058] The transformation method of a single-layer oil tank specifically includes the following steps:

[0059] The first step is to clean the operation well and block the oil inlet and outlet pipelines;

[0060] The second step is to clean up the residual oil and clean the oil tank;

[0061] The third step is to replace the air in the tank and monitor the combustible gas;

[0062] The fourth step is to sandblast the inner surface of the oil tank to remove rust, and the rust removal level should not be lower than SA2.5;

[0063] The fifth step is to check the thickness of the steel tank body, the average thickness should not be less than 4mm;

[0064] The sixth step is to corrode and perforate the steel tank body according to the aluminothermic method. figure 1 Repair as shown;

[0065] The seventh step is to coat the inner wall of the oil tank with a primer within 8 hours after the derusting is completed. The bonding strength between the coating and the steel tank should...

Embodiment 2

[0074] The connection between the ring rib and the triangular support should be handled in the following way:

[0075] The inner layer of the inner lining is covered outwardly and the outer layer of the inner lining is covered inward at the same time, and the middle layer of the inner lining is wrapped to form a complete and sealed middle layer of the inner lining structure.

Embodiment 3

[0077] The present invention relates to a lined double-layer oil tank structure, which includes a single-layer steel tank body 1 and an inner lining structure, and the inner lining structure includes a primer layer 2 arranged inwardly from the inner wall of the single-layer steel tank, The outer lining layer 3, the inner lining layer 4, the inner lining layer 5 and the static conductive layer 6 are provided with monitoring ports, manholes and lifting lugs on the single-layer tank body.

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Abstract

The invention discloses a lining double-layer oil tank structure and a transformation method of a single-layer oil tank, and belongs to the technical field of underground oil tank transformation of gas stations. The lining structure comprises a bottom coating, a lining outer layer, a lining middle layer, a lining inner layer and a static conductive layer which are sequentially arranged inwards from the inner wall of a single-layer tank body, a monitoring port, a manhole and a lifting lug are arranged on the single-layer tank body, the bottom coating is used for increasing the bonding strength of the single-layer tank body and the lining outer layer, and the bottom coating is formed by coating the inner wall of the single-layer tank body with resin. The bonding strength between the bottom coating and the inner wall of the single-layer tank body is larger than or equal to 5.5 MPa, an annular reinforcing rib cover plate is installed at the position of a channel steel annular reinforcing rib of the single-layer tank body, and the lining outer layer and the lining inner layer are combined on the periphery of a manhole neck and form the sealing edge of the lining middle layer. According to the lining double-layer oil tank structure and the transformation method of the single-layer oil tank, the problem that an in-service single-layer steel oil tank of a gas station is upgraded and transformed into a double-layer oil tank can be solved without dismantling original reinforcing ribs, and repair of leakage points in the in-service steel oil tank, treatment of manhole wells and the reinforcing ribs and the like are included.

Description

technical field [0001] The invention belongs to the technical field of reconstruction of buried oil tanks in gas stations, and in particular relates to a double-layer lining oil tank structure and a reconstruction method for a single-layer oil tank. Background technique [0002] With the increasing awareness of safety, energy saving and environmental protection in our country, more and more attention has been paid to the leakage of buried oil tanks in gas stations. In order to ensure the safety of buried oil tanks in gas stations, relevant parties require gas stations Update to double-layer oil tanks or complete the setting of anti-seepage pools, but the buried oil tanks of some gas stations are affected by the force radiation of surrounding buildings or rail transit foundations, so ground-breaking construction cannot be carried out. Therefore, the transformation of the lining has become the only way to meet the requirements of safety and environmental protection. The linin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D90/02B65D90/04B65D90/10B65D90/46B65D90/48B23P6/00B23K23/00
CPCB65D90/02B65D90/04B65D90/10B65D90/46B65D90/48B23P6/00B23K23/00B65D2590/023
Inventor 贾光陶彬刘全桢张卫华程庆利
Owner CHINA PETROLEUM & CHEM CORP
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