Anticorrosive treatment method based on flange and anticorrosive sealing structure

A technology of anti-corrosion treatment and flange, which is applied in the direction of flange connection, pipe/pipe joint/fitting, passing components, etc. It can solve the problems of anti-rust paint falling off, butter is not temperature-resistant, and anti-rust paint cannot be attached stably, etc., to achieve Good adhesion and sealing, ensuring firmness and durability, and ensuring the effect of anti-corrosion and sealing effects

Inactive Publication Date: 2016-03-23
SICHUAN DEYUAN PETROLEUM & GAS CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can prevent the corrosion of the seam of the flange in a short period of time, but because the butter is not resistant to temperature, once the ambient temperature is high, the phenomenon of oil flow will oc

Method used

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  • Anticorrosive treatment method based on flange and anticorrosive sealing structure
  • Anticorrosive treatment method based on flange and anticorrosive sealing structure
  • Anticorrosive treatment method based on flange and anticorrosive sealing structure

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Example Embodiment

[0032] Example

[0033] like Figure 1-3 As shown, this embodiment provides a flange-based anti-corrosion treatment method, which adopts three unit structures: anti-corrosion unit, anti-corrosion tape unit, and outer protective tape unit. By organically combining the three units into an integral structure The complete anti-corrosion structure is used to solve the problems existing in the technical solutions for flange anti-corrosion treatment in the prior art.

[0034] This embodiment mainly includes three steps, respectively corresponding to the above three unit structures, as follows:

[0035] 1. The steps of injecting anti-corrosion sealant into the middle seam of the flange

[0036] The anti-corrosion sealant is a flexible sealant that never cures and does not flow at high temperatures. Before injecting the anti-corrosion sealant, first remove the floating rust and dross in the middle seam of the flange with a wire brush and other tools, and then use a transparent adhes...

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Abstract

The invention discloses an anticorrosive treatment method based on a flange and an anticorrosive sealing structure and mainly aims at solving the problems of poor durability and stability and the like of flange anticorrosive treatment in the prior art. According to the anticorrosive treatment method based on the flange, three unit structures (an anticorrosive sealant, an anticorrosive adhesive tape and an outer protecting band) are organically integrated to form an anticorrosive structure; the anticorrosive sealant is adopted to seal a center joint of the flange, and is never cured and does not flow at high temperatures; on the basis of the anticorrosive sealant, the anticorrosive adhesive tape is wound around a disc surface of the flange with the center joint filled with the anticorrosive sealant by at least one turn, and has excellent adhesion and leakproofness to a steel surface and thus is capable of thoroughly preventing water vapor permeation; subsequently, the outer protecting band is wound around a surface of the anticorrosive adhesive tape to protect the anticorrosive sealant and the anticorrosive adhesive tape, and therefore, an anticorrosive sealing effect is effective guaranteed on one hand, and on the other hand, the firmness and durability of the anticorrosive sealing structure is guaranteed.

Description

technical field [0001] The invention relates to an anti-corrosion treatment technology for a middle seam of a flange, in particular to a flange-based anti-corrosion treatment method and an anti-corrosion sealing structure. Background technique [0002] Flanges are important equipment for the connection between pipes. The flanges are sprayed with anti-rust paint before leaving the factory, but the installed flange will vibrate slightly during operation, and the anti-rust paint is easy to fall off as a whole. Under conditions, it is easy to cause corrosion. There are a large number of flanges in the oil and gas station. Due to the large number and non-uniform specifications, it is difficult to achieve real-time monitoring. Once leakage occurs, it cannot be replaced in time. Therefore, flange anti-corrosion is particularly important. The flange itself is a special-shaped structure, and the narrow slit is inconvenient for surface treatment, and cannot be treated with convention...

Claims

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Application Information

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IPC IPC(8): F16L23/16
CPCF16L23/165F16L23/162
Inventor 姜世强张豫雷健陆剑锋
Owner SICHUAN DEYUAN PETROLEUM & GAS CO LTD
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