CN205582609U - Aluminum-clad fiber-reinforced composite core for overhead conductors - Google Patents

Abstract

The utility model provides a compound core of aluminium package fiber reinforcement for air wire, including an at least compound core, compound core includes the fibre sandwich layer and the aluminium parcel layer of parcel in fibre sandwich layer periphery that comprises many fibres, its characterized in that: is in the every compound core, fibrous volume content 50%~70%, and the diameter of fibre sandwich layer is d, and the thickness on aluminium parcel layer be h, and the diameter of compound core be D, and fibrous volume content is w, thickness h= [ D that the diameter d= of fibre sandwich layer (D2 w0.8) 12 then, aluminium wrapped up layer D ] 2. The thickness on diameter and the aluminium parcel layer of this application through rigorously enforcing volume content and the fibre sandwich layer of regulation fibre in compound core improves the comprehensive strength and the counter -bending ability of compound core to make compound core have better comprehensive properties, thereby satisfy the operation requirement of air wire.

Description

Aluminum-clad fiber-reinforced composite core for overhead conductors

technical field

The utility model belongs to the technical field of overhead power transmission lines, in particular to an aluminum-clad fiber-reinforced composite core for overhead wires.

Background technique

At the beginning of this century, the composite core made of fiber resin-based composite mandrel (composite mandrel for short) was used as the reinforcement core to replace the traditional steel core. The resulting composite core has remarkable characteristics such as high temperature resistance, large capacity, low sag, low energy consumption, light weight, etc., thus becoming a subversive product in the field of overhead transmission lines, and has been widely used in the field of transmission lines at home and abroad. , and achieved obvious technical and economic benefits. However, the composite core obtained by wrapping and curing multiple fibers with resin has the following defects: 1. After the composite core is used for a long time, the resin on the surface is easy to age, which leads to a reduction in the life of the composite core; 2. The composite core is equipped with a connecting hardware structure Complexity, high cost, and high requirements for construction technology have become the key resistance points for large-scale application of composite cores; 3. During the manufacturing process of composite cores, the resin wrapped around the outer periphery of multiple fiber core layers needs to be cured, and resin curing consumes The time is longer, which leads to the production line of the composite core to consume more time, and its production efficiency is low.

In view of the above problems, the Chinese invention patent application specification with application number 200810201843.2 discloses a reinforced cable core, which at least includes a fiber reinforced core and a metal sheath, and the metal sheath covers the fiber reinforced core; meanwhile, it also It is disclosed that the material of the metal sheath is electrical aluminum or stainless steel or a combination of the two. As a result, it uses aluminum or stainless steel or a combination of the two to replace the resin coating layer of the traditional composite core, which not only retains the advantages of high strength and light weight of carbon fiber, but also overcomes the short service life of the composite core caused by the long-term aging of the resin coating layer. The problem. However, since the composite core uses a metal sheath, the volume content of the metal sheath and the thickness of the metal sheath will have a certain impact on the bending resistance and overall strength of the composite core. If the volume content and thickness of the metal sheath If the design is unreasonable, the service life of the composite core will be greatly reduced, which cannot meet the requirements for the use of overhead wires.

Utility model content

In view of the above-mentioned shortcomings of the prior art, the purpose of this utility model is to provide an aluminum-clad fiber-reinforced composite core for overhead wires, which has the characteristics of high strength and good bending performance, and meets the current use requirements of overhead wires.

In order to achieve the above purpose, the utility model provides an aluminum-clad fiber-reinforced composite core for overhead wires, which includes at least one composite core, and the composite core includes a fiber core layer composed of a plurality of fibers and a fiber core layer wrapped around the fiber core layer Aluminum cladding layer, in each composite core, the volume content of fiber is 50% to 70%, the diameter of the fiber core layer is d, the thickness of the aluminum cladding layer is h, the diameter of the composite core is D, and the volume content of the fiber is w , then the diameter of the fiber core layer d=(D ² ×w/0.8) ^1/2 , and the thickness of the aluminum cladding layer h=[Dd]/2.

Further, the fiber core layer is composed of at least one fiber.

Preferably, the strength of the fiber is 2500MPa-5000MPa.

Further, the fiber is one or more of carbon fiber, glass fiber, basalt fiber, ultra-high molecular weight polyethylene fiber, and aramid fiber.

Further, there are multiple composite cores, and the multiple composite cores are twisted with each other.

Preferably, the diameter of the composite core is 2.00mm-11.0mm.

Preferably, when there are multiple composite cores, the diameter of the composite cores is 2.00 mm to 5.0 mm.

As mentioned above, the aluminum-clad fiber-reinforced composite core for overhead wires involved in the utility model has the following beneficial effects:

In this application, the composite core composed of the fiber core layer and the aluminum cladding layer is guaranteed to have the advantages of high strength, light weight, and long service life. The diameter and the thickness of the aluminum cladding layer are used to improve the comprehensive strength and bending resistance of the composite core, so that the composite core has better comprehensive performance, so as to meet the use requirements of overhead conductors.

Description of drawings

Fig. 1 is a schematic structural view of a single composite core in the present application.

Fig. 2 is a structural schematic diagram of multiple composite cores stranded in the present application.

Fig. 3 is a process flow chart of the manufacturing method of the aluminum-clad fiber-reinforced composite core for overhead conductors in the present application.

Component designation description

1 composite core

11 fiber core

12 aluminum cladding

detailed description

The implementation of the present utility model is illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification.

It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the utility model Therefore, it has no technical substantive meaning. Any modification of structure, change of proportional relationship or adjustment of size shall still fall within the scope of The technical content disclosed by the utility model must be within the scope covered. At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit this specification. The practicable range of the utility model, and the change or adjustment of its relative relationship, without any substantial change in the technical content, shall also be regarded as the practicable scope of the utility model.

As shown in Figure 1, the present application provides an aluminum-clad fiber-reinforced composite core for aerial conductors, including at least one composite core 1, the composite core 1 includes a fiber core layer 11 composed of a plurality of fibers and wrapped in a fiber core The aluminum cladding layer 12 on the outer periphery of the layer 11, in each composite core 1, the volume content of fibers is 50% to 70%; the diameter of the fiber core layer 11 is d, the thickness of the aluminum cladding layer 12 is h, and the composite core 1 The diameter of the fiber is D, the volume content of the fiber is w, then the diameter of the fiber core layer 11 is d=(D ² ×w/0.8) ^1/2 , and the thickness of the aluminum cladding layer 12 is h=[Dd]/2.

The above-mentioned composite core 1 is composed of a fiber core layer 11 located in the inner layer and an aluminum cladding layer 12 located in the outer layer. Therefore, the composite core 1 has the advantages of high strength, light weight, and long service life, and overcomes the disadvantages of the traditional composite core 1. The disadvantages of long-term aging and shortened life caused by the use of resin coating. In particular, the present application also improves the overall strength and bending resistance of the composite core 1 by strictly specifying the volume content of fibers in the composite core 1, the diameter d of the fiber core layer 11, and the thickness h of the aluminum cladding layer 12, so that The composite core 1 has better overall performance, thus meeting the requirements for the use of overhead wires.

Preferably, the fiber core layer 11 is composed of at least one fiber; the fiber is one or more of carbon fiber, glass fiber, basalt fiber, ultra-high molecular weight polyethylene fiber, and aramid fiber. In addition, the composite core 1 can be one or multiple; when there are multiple composite cores 1, as shown in Figure 2, the multiple composite cores 1 are twisted together, and then made after twisting. The composite core 1 has good lateral compression resistance, bending resistance and high strength.

In addition, when the composite core 1 is one, the diameter of the composite core 1 ranges from 5.00 mm to 11.0 mm, the volume content of the fibers in the composite core 1 is 50% to 70%, and the strength of the fibers constituting the fiber core layer 11 ranges from 5.00 mm to 11.0 mm. 2500MPa ~ 5000MPa. When multiple composite cores 1 are twisted together, the diameter of a single composite core 1 ranges from 2.00 mm to 5.0 mm, and the volume content of fibers in the composite core 1 is 50% to 70%, constituting the fiber core layer 11 The strength of the fiber ranges from 2500MPa to 5000MPa.

The present application also provides a method for manufacturing an aluminum-clad fiber-reinforced composite core for overhead conductors, as shown in Figure 3, the manufacturing method includes the following steps in sequence:

A. Yarn release: release multiple fibers from the pay-off frame;

B. Dipping into bundles: Place multiple fibers in a dipping tank filled with resin and fully dip into them. Therefore, multiple fibers are bonded to form fiber bundles. The diameter of the fiber bundles should meet the prepared requirements. Composite core requirements;

C. Curing: The fiber bundles are subjected to high-temperature pultrusion and curing sequentially to obtain a cured fiber core layer 11; the curing time is very short, and it is not necessary for the degree of curing of the fiber core layer 11 and the final surface of the fiber core layer 11 None of the effects are required;

D, cladding: the aluminum rod is sent into the continuous extrusion cladding machine, and the fiber core layer 11 solidified in step C is passed through the continuous extrusion cladding machine at the same time, and the continuous extrusion cladding machine is used on the fiber core layer 11 The outer periphery is evenly covered with a layer of aluminum, thereby obtaining the composite core 1;

The composite core 1 includes a fiber core layer 11 and an aluminum cladding layer 12 wrapped around the fiber core layer 11, the volume content of the fiber is 50% to 70%, the diameter of the fiber core layer 11 is d, and the aluminum cladding layer 12 is The thickness is h, the diameter of the composite core 1 is D, and the volume content of the fiber is w, then the diameter d=(D ² ×w/0.8) ^1/2 of the fiber core layer 11, and the thickness h=[Dd ]/2;

F. Winding: the composite core 1 is wound into a disk to reduce the occupied space of the composite core 1 and facilitate its storage and transportation.

In the manufacturing method of the composite core 1 involved in the present application, after the aluminum rod and the fiber core layer 11 are fed into the continuous extrusion coating machine, the continuous extrusion coating machine can continuously produce the composite core 1 that meets the requirements. The step of resin curing in the manufacturing process of the composite core 1 using the resin wrapping layer in the prior art is eliminated, thereby greatly shortening the production cycle of the composite core 1, thereby greatly improving the production efficiency of the composite core 1, and meeting modern requirements. Lean production requirements.

Preferably, in the above step D, the heating temperature of the mold cavity used to heat the aluminum rod in the continuous extrusion coating machine is T≧350°C, so that the aluminum rod is in a semi-melted state, so that aluminum can be evenly wrapped in the fiber core layer 11, forming the aluminum cladding 12 of the composite core 1.

The preferred embodiments of several composite cores 1 are given as examples below:

Table 1 Corresponding relationship between the diameter of composite core 1 and the diameter of fiber core layer 11

Table 2 Corresponding relationship between the diameter of the composite core 1 and the thickness of the aluminum cladding layer 12

To sum up, the utility model effectively overcomes various shortcomings in the prior art and has high industrial application value.

The above-mentioned embodiments only illustrate the principles and effects of the present utility model, but are not intended to limit the present utility model. Anyone familiar with this technology can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in the utility model should still be covered by the claims of the utility model.

Claims (7)

1. An aluminum-clad fiber-reinforced composite core for aerial conductors, comprising at least one composite core, said composite core comprising a fiber core layer made of a plurality of fibers and an aluminum cladding layer wrapped around the fiber core layer periphery, characterized in that : In each composite core, the volume content of the fiber is 50% to 70%, the diameter of the fiber core layer is d, the thickness of the aluminum wrapping layer is h, the diameter of the composite core is D, and the volume content of the fiber is w, then the fiber The diameter d=(D ² ×w/0.8) ^1/2 of the core layer, and the thickness h=[Dd]/2 of the aluminum cladding layer. 2. The aluminum-clad fiber-reinforced composite core for overhead conductors according to claim 1, wherein the fiber core layer is composed of at least one type of fiber. 3. The aluminum-clad fiber-reinforced composite core for overhead conductors according to claim 2, characterized in that: the strength of the fibers is 2500MPa-5000MPa. 4. The aluminum-clad fiber-reinforced composite core for overhead conductors according to claim 2, wherein said fibers are one of carbon fibers, glass fibers, basalt fibers, ultra-high molecular weight polyethylene fibers, and aramid fibers one or more species. 5 . The aluminum-clad fiber-reinforced composite core for overhead conductors according to claim 1 , characterized in that: there are multiple composite cores, and the multiple composite cores are twisted with each other. 6. The aluminum-clad fiber-reinforced composite core for overhead wires according to claim 1, characterized in that: the composite core has a diameter of 2.00mm˜11.0mm. 7. The aluminum-clad fiber-reinforced composite core for overhead wires according to claim 5, characterized in that: the diameter of the composite core is 2.00mm-5.0mm.