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Derusting and strengthening method for flange electric pole

A pole and flange technology, which is applied in the field of rust removal and reinforcement of flange poles, can solve the problems of high cost, rusting of the connecting ring of the flange, weathering and cracking of the concrete layer, etc., and achieve low cost and prolong service life and safety strength, the effect of saving economic costs

Active Publication Date: 2017-08-04
STATE GRID ZHEJIANG PINGHU POWER SUPPLY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of completely replacing the pole is high, and the concrete layer will be weathered and cracked after long-term use, causing the connecting ring of the flange to rust

Method used

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  • Derusting and strengthening method for flange electric pole

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for removing rust and strengthening flanged poles, comprising the following steps:

[0028] (1) Cleaning preparation: Chisel the cement burst part of the flange pole, polish the carbonized surface layer to expose the solid part of the cement, and the distance between the solid part of the cement exposed after grinding and the flange in the same section of cement pole is 20mm;

[0029] (2) Rust removal treatment: brush the rust removal solution on the flange and the steel bar, and form a protective layer after drying and curing. 1L of the rust removal solution consists of the following components: 300mL of phosphoric acid with a mass fraction of 85%, 25g of zinc oxide , Accelerator 2g, sodium molybdate solution 7.5g, complexing agent 25g, surfactant 4.5g, surplus is water;

[0030] (3) Brush the inner anti-rust layer and inner filler layer: brush the anti-rust paint outside the protective layer to form the inner anti-rust layer, the thickness of the inner anti-r...

Embodiment 2

[0036] A method for removing rust and strengthening flanged poles, comprising the following steps:

[0037] (1) Cleaning preparation: Chisel the cement burst part of the flange pole, polish the carbonized surface layer to expose the solid part of the cement, and the distance between the solid part of the cement exposed after grinding and the flange in the same section of cement pole is 22mm;

[0038] (2) Rust removal treatment: brush the rust removal solution on the flange and the steel bar, and form a protective layer after drying and curing. 1L of the rust removal solution consists of the following components: 280mL of phosphoric acid with a mass fraction of 85%, 30g of zinc oxide , Accelerator 1g, sodium molybdate solution 2.5g, complexing agent 15g, surfactant 1.5g, the balance is water;

[0039] (3) Brush the inner anti-rust layer and inner filler layer: brush the anti-rust paint outside the protective layer to form the inner anti-rust layer, the thickness of the inner an...

Embodiment 3

[0045] A method for removing rust and strengthening flanged poles, comprising the following steps:

[0046] (1) Cleaning preparation: Chisel the cement burst part of the flange pole, polish the carbonized surface layer to expose the solid part of the cement, and the distance between the solid part of the cement exposed after grinding and the flange in the same section of cement pole is 25mm;

[0047] (2) Rust removal treatment: brush the rust removal solution on the flange and the steel bar, and form a protective layer after drying and curing. 1L of the rust removal solution consists of the following components: 330mL of phosphoric acid with a mass fraction of 85%, 35g of zinc oxide , Accelerator 3g, sodium molybdate solution 5g, complexing agent 20g, surfactant 3g, surplus is water;

[0048] (3) Brush the inner anti-rust layer and inner filler layer: brush the anti-rust paint outside the protective layer to form the inner anti-rust layer, the thickness of the inner anti-rust ...

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Abstract

The invention relates to the technical field of flange electric poles and particularly discloses a derusting and strengthening method for a flange electric pole. The derusting and strengthening method comprises the following steps of cleaning preparation, derusting treatment, inner rust-proof layer and inner packing layer painting, strengthening layer arranging, middle packing layer and outer rust-proof layer painting, and outer packing layer and finishing coat painting. Derusting liquid is used in derusting treatment and comprises 85% phosphoric acid, zinc oxide, accelerants, sodium molybdate solutions, complexing agents, surfactants and the balance water. The derusting liquid forms a rust-proof phosphating film protective layer on the surface of the flange electric pole while derusting is completed, so that occurrence of rusting again is avoided. According to the derusting and strengthening method for the flange electric pole, the flange electric pole can be effectively subjected to derusting and strengthening, the service life of the electric pole is prolonged, the safety strength of the electric pole is strengthened, meanwhile, the derusting and strengthening method can operate under the normal using condition, the economic loss caused by power outage operation is avoided, and the economic cost brought by replacing a new electric pole is saved.

Description

technical field [0001] The invention relates to the technical field of flanged poles, in particular to a rust removal and reinforcement method for flanged poles. Background technique [0002] The flange pole is referred to as the flange pole for short, including a 12-meter upper pole section and a 6-meter lower pole section. There are pairs of welding flanges on the upper pole section and the lower pole section. By welding the welding flanges, the upper pole section and the lower pole section are welded. The lower section of the pole is connected to form a whole pole, and the inside of the flange pole is provided with a steel skeleton, and the outside is provided with a cement layer. After being used for a period of time, the metal part of the flange pole exposed to the air will gradually form rust due to water vapor erosion, and accelerate the corrosion of the metal part. The internal steel bars of the flange poles swell after corrosion and expand the wrapped cement layer ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G23/02C23G1/08C23C22/42
CPCC23C22/42C23G1/083E04G23/0218
Inventor 潘建乔晏翔金朝晖胡雷剑倪大伟吴迪栾伊斌顾强杰陈敏跃陈祝峰吴韬徐克陶琨陆军明朱俊峰
Owner STATE GRID ZHEJIANG PINGHU POWER SUPPLY
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