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A three-dimensional braided composite power transmission tower and its preparation method

A technology of transmission poles and towers and three-dimensional weaving, which is applied in chemical instruments and methods, towers, building types, etc., can solve problems such as hidden dangers of structural defects and achieve the effect of improving mechanical properties

Active Publication Date: 2018-05-15
SHANDONG ZHONGHENG CARBON FIBER TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All in all, the structure of traditional composite towers is usually prepared in the form of zero-dimensional discrete chopped fiber reinforcement or continuous fiber two-dimensional winding. For towers used in complex environments, on the one hand, they must be tested by environmental factors. It must have strong mechanical durability to withstand the tension of transmission lines and the fatigue load of lateral wind. This kind of mechanical or environmental test is more demanding for traditional composite material reinforcement forms such as zero-dimensional or two-dimensional. From the current application situation There are also many problems, especially the damage of the interlayer interface of composite materials has always been the concentrated point of defects in this kind of composite material towers. Truss connection, and the connection method of traditional composite material embedded metal parts also has many hidden dangers of structural defects

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • A three-dimensional braided composite power transmission tower and its preparation method
  • A three-dimensional braided composite power transmission tower and its preparation method
  • A three-dimensional braided composite power transmission tower and its preparation method

Examples

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Comparison scheme
Effect test

Embodiment 1

[0037] Preparation of cross-arm and support rods at tower head: T300 carbon fiber is used as zero-degree yarn to prepare carbon fiber center zero-degree yarn skeleton 1 for cross-arm and support rods. 6% of the cross-sectional radius of the rod part. After the zero-degree yarn is prepared, the three-dimensional fabric core structure is woven with a three-dimensional five-way process on the basis of the carbon fiber yarn skeleton. For the material, the entire weaving thickness accounts for 75% of the cross-sectional radius of the cross-arm and support rod parts of the tower. After the core glass fiber three-dimensional fabric is woven, the yarn type is adjusted and T700 carbon fiber is introduced. The proportion of carbon fiber in the mixed yarn is 93%, the three-dimensional four-way weaving structure is selected for the outer three-dimensional fabric processing, and the thickness of the obtained hybrid fiber fabric transition layer 3 accounts for 19% of the radius of the rod bo...

Embodiment 2

[0043] Preparation of cross-arm and support rods at tower head: T300 carbon fiber is used as zero-degree yarn to prepare carbon fiber center zero-degree yarn skeleton 1 for cross-arm and support rods. 7% of the cross-sectional radius of the rod part. After the zero-degree yarn is prepared, the three-dimensional fabric core structure is woven with a three-dimensional five-way process on the basis of the carbon fiber yarn skeleton. The structure of the glass fiber fabric 2 in the core is woven with high-strength S glass For the material, the entire weaving thickness accounts for 74% of the cross-sectional radius of the cross-arm and support rod parts of the tower. After the core glass fiber three-dimensional fabric is woven, the yarn type is adjusted and T300 carbon fiber is introduced. The proportion of carbon fiber in the mixed yarn is 92%, the three-dimensional four-way weaving structure is selected for the outer layer three-dimensional fabric processing, and the thickness of ...

Embodiment 3

[0049] Preparation of cross-arm and support rods at tower head: T300 carbon fiber is used as zero-degree yarn to prepare carbon fiber center zero-degree yarn skeleton 1 for cross-arm and support rods. 9% of the cross-sectional radius of the rod part. After the zero-degree yarn is prepared, the three-dimensional fabric core structure is woven with a three-dimensional four-way process on the basis of the carbon fiber yarn skeleton. The structure of the glass fiber fabric 2 in the core is woven with high-strength S glass For the material, the entire weaving thickness accounts for 70% of the cross-sectional radius of the cross-arm and support rod parts of the tower. After the core glass fiber three-dimensional fabric is woven, the yarn type is adjusted and T800 carbon fiber is introduced. The proportion of carbon fiber in the mixed yarn is 91%, the three-dimensional four-way weaving structure is selected to process the three-dimensional fabric of the outer layer, and the thickness ...

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Abstract

The invention relates to a three-dimensional braided composite material transmission tower and a preparation method thereof. Various fibers are mixed to form three-dimensional braided fabric, and according to the preparation method of the three-dimensional braided tower, flange connecting pieces and tower composite material structures can be integrally formed in a seamless mode. Rod pieces, on a tower head, a tower body, tower legs and other portions, of different types are transited to preparation of a hybrid fiber braised structure of outer layer carbon fiber three-dimensional fabric through core glass fiber three-dimensional fabric, and carbon fiber zero-degree yarn is adopted at the center of the core glass fiber fabric to serve as a framework. Meanwhile, the rod pieces of the three-dimensional braided composite material tower are connected through flange structures (an embedded metal flange framework) braided by tower rod end integrated hybrid fibers (mixing of carbon fibers and glass fibers), and the tower legs and a shoe plank for connection of a ground-based foundation are of a full carbon fiber three-dimensional braided structure. By means of the method, three-dimensional braided composite material transmission tower parts with composite material flange connection structures can be prepared and are suitable for assembly application of transmission towers of various types.

Description

technical field [0001] The invention relates to a three-dimensional braided composite material transmission tower and a preparation method thereof, belonging to the technical field of composite material transmission tower preparation. Background technique [0002] Towers are important and special supporting structures for infrastructure such as power transmission, communications, high-speed railways, and municipal facilities. The structural performance of towers directly affects the safety, economy, and reliability of different types of lines. From the perspective of the material development of towers, the towers used in overhead transmission lines at home and abroad mainly include wooden towers, concrete towers or prestressed concrete towers, steel pipe concrete towers, and all-metal towers (steel pipe towers or iron towers, etc.). [0003] Among them, wooden towers are mainly used in regions with rich forest resources such as Canada and the United States, and concrete or p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04H12/02E04H12/24B32B17/02B32B9/04
Inventor 朱波曹伟伟王永伟乔琨赵圣尧
Owner SHANDONG ZHONGHENG CARBON FIBER TECH DEV CO LTD
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