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Chemical holding multilayer cladding compound protection method for fastener of transmission tower

A technology for transmission towers and fasteners, applied in coatings, building components, adhesive types, etc., can solve problems such as damage to the protective layer, cracking of the cladding layer, and shortened service life, and achieve good flexibility and water resistance Beautiful appearance and little change in hardness

Active Publication Date: 2014-10-01
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the service process of the transmission tower, in addition to the severe corrosion damage caused by the harsh conditions of sunshine, alternating dry and wet, and weathering, it also has to bear the alternating load of the wind, which may lead to fastening In the actual process, the protective layer is partially damaged and the service life is shortened, especially in harsh environments such as coastal areas, and there may even be serious consequences of losing mechanical strength, which affects its reliability. , endangering the structural safety of transmission towers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] This embodiment is an example of the protective construction of a coastal power transmission and transformation tower fastener to describe the present invention in detail:

[0025] 1) Clean the fasteners, use a steel brush to polish the surface, remove dust and rust, and remove water and oil.

[0026] 2) Apply cured ointment evenly on the surface of the treated structure,

[0027] 3) After applying the cured ointment, use non-cured ointment to level the protective structure as soon as possible to make the surface smooth.

[0028] 4) Wrap the anti-corrosion tape on the structure to be protected after the above three steps, stretch the anti-corrosion tape forcefully when winding, and wrap it in a way of not less than 50% overlap, and basically keep the entire structure covered with 2 layers of anti-corrosion bring. After cladding, smooth the surface of the anti-corrosion tape by hand to make it fit tightly on the surface of the steel structure.

[0029] 5) After wind...

example 2

[0035] Example 2 Salt spray test results

[0036] The test method is to carry out anti-corrosion treatment on the structural parts according to the method described in the above-mentioned embodiment 1, and then carry out alternating tensile stress on the protected structure. The test period is 3000 cycles, and the tensile force is 5000N.

[0037] After 3000 cycles of alternating test, the sample is subjected to a salt spray test in a salt spray box. The test time is 1500h, that is, the protected object is observed after 1500h. The appearance after the test: no rust; remove the anti-corrosion belt Appearance: no rust ; After removing the cladding, observe its appearance, it can be seen that the protection effect of the protected components is very good, and the fasteners are not loose.

[0038] The protection method for chemically holding multiple layers of the invention is suitable for the protection of complex fastener connection structures of various power transmission pol...

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Abstract

The invention relates to fastening and anticorrosion technologies, in particular to a chemical holding multilayer cladding compound protection method applicable to a transmission tower with alternating loads in corrosion environment. Curing factice, non-curing factice, anti-corrosive tapes and adhesives are sequentially arranged on the surface of a protected structure. The curing factice is used for fastening and sealing the fastener, and the surface of a projected object to be coated needs to be subjected to treatment such as oil removal, rust removal and water removal. The non-curing factice is used for leveling a special-shaped structure; meanwhile, the curing factice is coated for building anaerobic environment; the chemical holding effect of the curing factice can be conveniently achieved; the alternating loads can be born; and the loosening is prevented. The adhesives are used for fast film forming; the adhesives and the anti-corrosive tapes are used for isolating the contact with corrosive media such as moisture and air in environment; the anticorrosion performance is good; and meanwhile, an effect of attractive appearance is achieved.

Description

Technical field [0001] The present invention relates to a fastening seal and multi-layer anti-corrosion protection method suitable for power transmission and transformation tower fasteners in coastal areas and heavy industrial areas, in particular to a chemically fixed multi-layer coating composite protection method for power transmission tower fasteners . Background technique [0002] Fasteners are one of the key components of transmission towers, which are related to the reliability and safety of transmission towers. Its anti-corrosion methods are divided into three types. One is to adopt protective coating for fasteners, including cadmium plating, electro-galvanizing, hot-dip galvanizing, mechanical galvanizing, phosphating treatment, etc.; the other is to adopt the method of overall coating protection, such as : Coating anti-corrosion paint, metal spraying, cement covering layer, bottom zinc-rich primer, surface epoxy resin covering layer and other methods; the third i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/64C09D4/02C09D4/00C09D7/12C09J175/04C09J11/04C09J7/02
Inventor 王学刚李辛庚曹建梅闫风洁岳增武王晓明樊志彬郭凯
Owner STATE GRID CORP OF CHINA
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