Corrosion-resisting anchor part, prestress anchor combination part and wind power supporting structure

A technology for corroding anchors and bolts, which is applied in the direction of basic structure engineering, bolts, connecting components, etc., can solve the problems of poor adhesion between heat shrinkable sleeves and anchor bolts, affecting the service life of anchor bolts, and anticorrosion failure of heat shrinkable sleeves. , to achieve the effect of ensuring the effect of pressing and bonding, avoiding uneven thickness and shortening the process of covering

Pending Publication Date: 2020-03-10
JIANGSU JINHAI NEW ENERGY TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using this kind of heat-shrinkable sleeve, in the actual application process, there are often construction reasons such as uneven baking, which causes the heat-shrinkable sleeve to bulge
At the same time, the adhesion between the heat-shrinkable sleeve and the anchor bolt is not strong, and air bubbles are easily formed between the heat-shrinkable sleeve and the anchor bolt, which affects the corrosion resistance and greatly affects the service life of the anchor bolt; Poor, resulting in loss of adhesion to the anchor bolt, and this defect will continue to expand over time, resulting in anti-corrosion failure of the heat shrinkable sleeve

Method used

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  • Corrosion-resisting anchor part, prestress anchor combination part and wind power supporting structure
  • Corrosion-resisting anchor part, prestress anchor combination part and wind power supporting structure
  • Corrosion-resisting anchor part, prestress anchor combination part and wind power supporting structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] A method for preparing an anti-corrosion anchor bolt, specifically comprising the steps of:

[0088] (1) Provide 20 anchor bolts of M48-8.8 grade (straightness ≤ 2mm / m, bending degree ≤ 0.1% within the total length range), as the anchor bolt body 120, and provide 1000-hour salt spray test at the same time The anchor bolt sample (hereinafter referred to as the anchor bolt body); the anchor bolt body 120 includes a polished rod part and a threaded part arranged at both ends of the polished rod part;

[0089] (2a) coating the outside of the polished rod with the lubricating oil remaining in the machining process, and removing the excess lubricating oil;

[0090] (2b) After the anchor bolt body 120 is heated from room temperature to 250°C at a rate of 13-17°C / min, it is kept for 20 minutes, then naturally cooled to room temperature, and then baked to obtain a dry film protection of the outer surface of the anchor bolt. Floor;

[0091] (2) Provide a polymer butyl self-adhe...

Embodiment 2～6

[0096] The difference with embodiment 1 is only that the width of the strip-shaped overlapping portion is 5mm (embodiment 2), 10mm (embodiment 3), 25mm (embodiment 4), 2mm (embodiment 5), 30mm ( Example 6). After testing, the results show that the number of leaks in the first inspection of the 20 anchor bolts in Examples 2 to 4 is 0, and the number of defects such as hollowing, warping, and wrinkles is 0; the first inspection of the 20 anchor bolts in Example 5 The number of leaks is 1, and the number of defects such as hollowing, warping, and wrinkles is 0; the number of leaks in the first detection of 20 anchor bolts in Example 6 is 0, and the number of defects such as hollowing, warping, and wrinkles is 0. is 1.

Embodiment 7～10

[0098] The only difference from Example 1 is that the thickness of the anti-corrosion coating layer is 0.5mm (Example 7), 2.5mm (Example 8), 0.4mm (Example 9), and 2.7mm (Example 10). After testing, the results show that the number of leaks in the first inspection of the 20 anchor bolts in Examples 7 to 8 is 0, and the number of defects such as hollowing, warping, and wrinkles is 0; The number of leaking points is 1, and the number of defects such as hollowing, warping, and wrinkles is 2; the number of leaking points in the first inspection of the 20 anchor bolts in Example 10 is 0, and the number of defects such as hollowing, warping, and wrinkles is 2. is 1.

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Abstract

The invention relates to a corrosion-resisting anchor part for a wind power foundation. The corrosion-resisting anchor part comprises an anchor part body and a corrosion-resisting coating layer arranged on the outer side of a polish rod part of the anchor part body. The corrosion-resisting coating layer is provided with a lap joint part which stretches along the anchor part body axially. By longitudinally (axially) coating the outer side of the polish rod of the anchor part body with a corrosion-preventing tape, introduction of air in the coating process can be reduced, and meanwhile, the length of the lap joint part is reduced and the probability that the corrosion-resisting anchor part is corroded is reduced.

Description

technical field [0001] The invention belongs to the field of wind power support structures, and in particular relates to an anti-corrosion anchor bolt, a prestressed anchor bolt assembly, a wind power support structure component, and a preparation method of the anti-corrosion anchor bolt. Background technique [0002] The wind power generation system is mainly composed of four parts: wind blades, nacelle, tower and foundation. Usually, the wind blades and the nacelle at the top of the tower are collectively referred to as the upper structure, and the tower and foundation that play a bearing role are collectively referred to as the supporting structure. [0003] The prestressed anchor bolt foundation is a commonly used foundation type for wind power generation structures. In this foundation structure form, the upper load of the wind turbine is transmitted to the concrete foundation through the prestressed anchor bolt assembly. The anchor bolt assembly is composed of upper an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/42E02D31/06F16B33/00F16B35/00
CPCE02D27/425E02D31/06F16B33/008F16B35/00
Inventor 施辉
Owner JIANGSU JINHAI NEW ENERGY TECH
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