WO2015066889A1

WO2015066889A1 - Joint structure of carbon fiber composite core wire

Info

Publication number: WO2015066889A1
Application number: PCT/CN2013/086775
Authority: WO
Inventors: 朱砚; 周政敏; 王清明
Original assignee: 佛冈鑫源恒业电缆科技有限公司
Priority date: 2013-11-08
Filing date: 2013-11-08
Publication date: 2015-05-14

Abstract

A joint structure of a carbon fiber composite core wire is used in electric power transmission and comprises a wire and a connection joint. The wire comprises a wire core and a conducting layer clad on the wire core. The connection joint comprises a steel anchor and a jumper conductor clamper connected to the steel anchor. A final segment of the steel anchor is provided with an inner lamination connection pipe, and an outer sleeve is sleeved outside the inner lamination connection pipe. A cavity for embedding of a wire core is disposed in the inner lamination connection pipe. In the joint structure of the carbon fiber composite core wire, by adding an inner lamination connection pipe and an outer sleeve sleeved outside the inner lamination connection pipe, so that when the carbon fiber composite core wire is in wire clamp lamination, the lamination force is applied on the wire through two pipe walls; in this manner, the lamination force is dispersed on the force-carrying steel anchor, thereby ensuring the uniformity of the force applied on the carbon fiber composite core wire, and improving the grip strength of the connection joint on the carbon fiber composite core wire.

Description

Joint structure of carbon fiber composite core wire

Technical field

The invention is used in the field of power transmission, and in particular to a joint structure of a carbon fiber composite core wire.

Background technique

The traditional power transmission is carried out through steel-cored aluminum wires. Since such wires are greatly affected by temperature during power transmission, they may cause sag problems. Currently, there is a new type of carbon fiber composite core wire, which is composed of most carbon fibers. It is compounded with a resin base composed of a plurality of materials, and the core is wrapped by a conductor. Since the core has a high modulus of elasticity and a low coefficient of thermal expansion, the ampacity of the wire can be improved. The power transmission is large, and it is resistant to high temperature, and it will not produce obvious sag. The effect is good and the life is long. It can be said that this is the development trend of power transmission wires.

Carbon fiber composite core wire is a brand-new wire, and its supporting fittings will also become an important part of the application of carbon fiber composite core wire. The current carbon fiber composite core wire fittings are wedge-shaped force, spiral connection, etc. The structure is relatively complicated, and has high requirements on the construction process, which is not conducive to a wide range of applications.

Summary of the invention

In order to solve the above problems, the present invention provides a joint structure of a carbon fiber composite core wire capable of effectively dispersing the grip force during assembly and allowing the core of the carbon fiber composite core wire to be firmly coupled to the steel anchor.

The technical solution adopted by the present invention to solve the technical problem thereof is: a joint structure of a carbon fiber composite core wire, comprising a wire and a joint, the wire comprises a wire core and a conductive layer covering the core, and the joint comprises a steel anchor and a steel The anchor wire clamp of the anchor joint, the end section of the steel anchor is provided with an inner laminated joint, the inner laminated joint has an outer sleeve, and the inner laminated joint is provided with a cavity into which the core is embedded.

Further, as an improvement of the technical solution of the present invention, the last section of the steel anchor is connected with the inner laminated joint, and the two are integrally connected, and a protective layer is further disposed between the core and the inner laminated joint, and the protective layer covers the core, and Embed the inner laminated joint.

Further, as an improvement of the technical solution of the present invention, the end portion of the steel anchor is coupled with an anchor head, and the outer surface of the anchor head is sleeved with an inner laminated joint, and the anchor head is provided with a plurality of grooves on the inside of the inner laminated joint.

Further, as an improvement of the technical solution of the present invention, the inner laminated joint is an aluminum alloy member, and the outer sleeve is an aluminum or aluminum alloy member.

Further, as an improvement of the technical solution of the present invention, one end of the outer sleeve is sleeved with the end of the steel anchor and the inner laminated joint is completely covered, and the steel anchor is provided with a plurality of grooves in the inner sleeve. .

Further, as an improvement of the technical solution of the present invention, the core is formed by twisting two or more carbon fiber composite cores.

Further, as an improvement of the technical solution of the present invention, the conductive layer is divided into an inner layer of an aluminum conductor and an outer layer of an aluminum conductor. The inner layer of the aluminum conductor is a plurality of aluminum conductors wound around the outer core of the wire, and arranged in a spiral counterclockwise direction along the core direction to form an aluminum guide. The inner layer; the outer layer of the aluminum conductor is arranged in a spiral clockwise direction along the core direction by a plurality of aluminum conductors, and the wire is twisted in a reverse manner to be tightly wound around the inner layer of the aluminum conductor.

Further, as an improvement of the technical solution of the present invention, the aluminum conductor of the inner layer of the aluminum conductor has a trapezoidal cross section and a Z Shape or circle; the aluminum conductor of the outer layer of the aluminum conductor has a trapezoidal, Z-shaped or circular cross section.

Further, as an improvement of the technical solution of the present invention, the aluminum conductor of the inner layer of the aluminum conductor has a concave cross section, and the aluminum conductor of the outer layer of the aluminum conductor has a convex shape that fits the inner layer of the aluminum conductor.

Further, as an improvement of the technical solution of the present invention, the aluminum conductor of the inner layer of the aluminum conductor is convex, and the aluminum conductor of the outer layer of the aluminum conductor is concave with the inner layer of the aluminum conductor.

The beneficial effects of the invention: in the joint structure of the carbon fiber composite core wire, by adding the inner laminated joint and the outer sleeve sleeved thereon, the force of the pressing force is required when the carbon fiber composite core wire is clamped by the wire clamp The conductor is pressed by the two layers of the pipe wall, so that the pressing force is dispersed on the stressed steel anchor, the uniformity of the force of the carbon fiber composite core wire is ensured, and the grip strength of the carbon fiber composite core wire of the joint is improved. The structure of the invention is simple and reasonable, the anchoring is convenient and reliable, and the force is reasonable, and is widely used for the transmission line erection of the carbon fiber composite core wire.

DRAWINGS

The present invention will be further described below in conjunction with the accompanying drawings:

Figure 1 is a schematic view showing the structure of a first embodiment of the present invention;

Figure 2 is a schematic view showing the structure of a second embodiment of the present invention;

Figure 3 is a schematic structural view of a first embodiment of a wire in the present invention;

Figure 4 is a schematic view showing the structure of a second embodiment of the wire in the present invention;

Figure 5 is a schematic view showing the structure of a third embodiment of the wire in the present invention;

Figure 6 is a schematic view showing the structure of a fourth embodiment of the wire in the present invention;

Figure 7 is a schematic view showing the structure of a fifth embodiment of the wire in the present invention;

Figure 8 is a schematic structural view of a sixth embodiment of a wire in the present invention;

Figure 9 is a schematic structural view of a seventh embodiment of a wire in the present invention;

Figure 10 is a schematic structural view of an eighth embodiment of a wire in the present invention;

Figure 11 is a schematic structural view of a ninth embodiment of a wire in the present invention;

Figure 12 is a schematic view showing the structure of a tenth embodiment of the wire in the present invention;

Figure 13 is a schematic view showing the structure of an eleventh embodiment of the wire in the present invention.

detailed description

The invention provides a joint structure of a carbon fiber composite core wire, comprising a wire 1 and a connecting joint 2, the wire 1 comprises a core 11 and a conductive layer 12 covering the core 11, the joint 2 comprises a steel anchor 21 and a steel anchor 21 connected draining clip 22, the end of the steel anchor 21 is provided with an inner laminated joint 23, the inner laminated joint 23 is covered with an outer sleeve 24, and the inner laminated joint 23 is provided with an empty space for the core 11 to be embedded. Cavity.

In the joint structure of the carbon fiber composite core wire, by adding the inner laminated joint 23 and the outer sleeve 24 which is sheathed thereto, when the carbon fiber composite core wire is crimped, the force of pressing needs to pass through the two-layer tube. The wall presses the wire, so that the pressing force is dispersed on the stressed steel anchor, the uniformity of the force of the carbon fiber composite core wire is ensured, and the grip strength of the connecting joint 2 to the wire 1 is improved. The structure of the invention is simple and reasonable, the anchoring is convenient and reliable, and the force is reasonable, and is widely used for the transmission line erection of the carbon fiber composite core wire.

The first embodiment, referring to Fig. 1, includes a steel anchor 21 and a drain clamp 22 coupled to the steel anchor 21, the last section of the steel anchor 21 is connected to the inner laminate joint 23, and the two are integrally connected, and the inner laminate is laminated. The connecting tube 23 is provided with an outer sleeve 24, and the inner laminated connecting tube 23 is provided with a cavity into which the core 11 is embedded, and a protective layer is further disposed between the core 11 and the inner laminated joint 23. The protective layer is a thin aluminum member or other soft member, the protective layer covers the core, and is embedded in the inner laminated joint 23, and the protective layer mainly serves as a protection to prevent the core 11 from being damaged during mechanical pressing. The steel anchor 21 and the inner laminated joint 23 are integrated, and the load received by the wire 1 can be directly transmitted to the steel anchor 21, thereby avoiding the hidden trouble that the wire 1 is broken by the load in other directions due to the misalignment caused by the installation. In operation, the core 11 of the wire 1 to be joined is located in the inner laminate joint 23 with the front end abutting against the steel anchor 21. The mechanical properties of the conductor 1 are transmitted to the steel anchor 21 through the inner laminate connection 23 and the outer sleeve 24 and are communicated to the terminal. The electrical properties of the conductor 1 are transmitted from the outer sleeve 24 through the drainage plate to the drainage clamp 22 on. In addition, the drain clip 22 can be placed in 0° and 30° drainage settings. The steel anchor 21 is provided with a steel anchor ring 25 at one end remote from the inner laminate joint 23, and the steel anchor ring 25 is used for connection with an insulator string of the peripheral.

The second embodiment, referring to Fig. 2, includes a steel anchor 21 and a drain clamp 22 coupled to the steel anchor 21, the last section of the steel anchor 21 is coupled with an anchor head 26, and the outer surface of the anchor head 26 is sleeved with an inner laminate joint 23 The inner laminated joint 23 is provided with a cavity into which the core 11 is embedded, and the anchor head 26 is provided with a plurality of grooves on the inside of the inner laminated joint 23. Specifically, the steel anchor 21 is integrated with the anchor head 26, and the steel anchor 21 is coupled to the drain clamp 22 by a drain plate, and the drain plate is welded to the outer sleeve 24 as a whole. In operation, the core 11 of the wire 1 to be joined is located in the inner laminate joint 23 with the front end abutting against the anchor head 26. The mechanical properties of the wire 1 are communicated to the anchor head 26 through the inner laminate tube 23 and the outer sleeve 24 and are communicated to the terminal. The electrical properties of the wire 1 are transmitted from the outer sleeve 24 through the drain plate to the drain clamp 22 on. In addition, the drain clip 22 can be placed in 0° and 30° drainage settings. The steel anchor 21 is provided at one end remote from the anchor head 26 with a steel anchor ring 24 for connection to the insulator string of the peripheral.

As a preferred embodiment of the present invention, the inner laminate joint 23 is an aluminum alloy member, and the outer sleeve 24 is an aluminum or aluminum alloy member. In order to make the subsequent mechanical pressing smooth, the inner laminated joint 23 and the outer sleeve 24 are made of aluminum tubes as raw materials, so that they have metal plasticity themselves, and after being deformed by mechanical pressing, the core 11 can be The anchor heads 26 are securely anchored together. Of course, other similar plastic materials can be used as the material for the two sleeves, which are also equivalent variants of the invention.

As a preferred embodiment of the present invention, one end of the outer sleeve 24 is sleeved with the end of the steel anchor 21 and the inner laminate is completely covered, and the steel anchor 21 is provided with a plurality of inside the outer sleeve 24. Road groove. At this time, the other end is sleeved on the outer layer of the carbon fiber composite core wire 1 to be joined of the peripheral, so that the length of the outer sleeve 24 is from the joint point of the drain wire clamp 22 and the steel anchor 21 until the carbon fiber composite core The outer layer of the wire 1 is extended for a further period of time. At the time of mechanical compression, both ends of the outer sleeve 24 are compacted. At this time, the inner laminate joint 23 is subjected to the 95% shearing force of the carbon fiber composite core wire 1, and the force is transmitted to the steel anchor 21 through the inner laminate joint 23.

The steel anchor 21 and the groove provided on the anchor head 26 are deformed and embedded in the groove when the press-fit coupling is performed, so that the metal inner joint 21 and the outer sleeve 24 are deformed and inserted into the groove. The radial friction is greatly increased, so that the core 11 does not easily slip.

As a preferred embodiment of the invention, the diameter of the end section of the steel anchor 21 is greater than the diameter of the anchor head 26. In fact, it means that the body of the steel anchor 21 and the anchor head 26 constitute a structure of a shoulder step. Further, the diameter of the end section of the steel anchor 21 can be made substantially equal to the outer diameter of the inner lamination joint 23, and the diameter of the anchor head 26 is substantially equal to the inner diameter of the inner lamination joint 23, and accordingly, the inner diameter of the inner lamination joint 23 is also required. It is approximately equal to the diameter of the core 11. It should be noted that the fit of each inner and outer diameter must be as close as possible while allowing nesting.

As a preferred embodiment of the present invention, the core 11 is formed by twisting two or more carbon fiber composite cores, and the toughness is further improved. Further, the above-mentioned carbon fiber composite cores are twisted and twisted in opposite directions.

As a preferred embodiment of the present invention, the conductive layer 12 is divided into an aluminum conductor inner layer 121 and an aluminum conductor outer layer 122. The aluminum conductor inner layer 121 is a plurality of aluminum conductors wound around the outer core 11 and spirally counterclockwise in the direction of the core 11 Arranged to form an inner layer 121 of the aluminum conductor; the outer layer 122 of the aluminum conductor is arranged in a spiral clockwise direction along the core 11 in a plurality of aluminum conductors, and the wire 1 is prevented from being twisted in a reverse winding manner, and is tightly wound around the inner layer of the aluminum conductor. 121.

According to the above aluminum conductor 2 each 3 The carbon fiber composite core wires can be arranged in nine different configurations as described below.

Referring to FIG. 3, a trapezoidal aluminum conductor inner layer 121 and a trapezoidal aluminum conductor outer layer 122 are formed; 4, forming a Z-shaped aluminum conductor inner layer 121 and a Z-shaped aluminum conductor outer layer 122; 5, forming a circular aluminum conductor inner layer 121 and a circular aluminum conductor outer layer 122; with reference to Figure 6, forming a trapezoidal aluminum conductor inner layer 121 and a Z-shaped aluminum conductor outer layer 122; 7, forming a trapezoidal aluminum conductor inner layer 121 and a circular aluminum conductor outer layer 122; referring to FIG. 8, forming a Z-shaped aluminum conductor inner layer 121 and a trapezoidal aluminum conductor outer layer 122; Z-shaped aluminum conductor inner layer 121 and circular aluminum conductor outer layer 122; 10. A circular aluminum conductor inner layer 121 and a trapezoidal aluminum conductor outer layer 122 are formed. Referring to Fig. 11, a circular aluminum conductor inner layer 121 and a Z-shaped aluminum conductor outer layer 122 are formed.

In addition, in addition to the above nine embodiments, there may be two other embodiments as shown in FIGS. 12 and 13 . 12. The aluminum conductor of the aluminum conductor inner layer 121 is concave, and the aluminum conductor of the aluminum conductor outer layer 122 is convex with the inner layer 121 of the aluminum conductor. Reference map 13. The aluminum conductor of the aluminum conductor inner layer 121 is convex, and the aluminum conductor of the aluminum conductor outer layer 122 is concave with the inner layer 121 of the aluminum conductor. In the above concave and convex structure, the number of the aluminum conductors of the aluminum conductor inner layer 121 and the aluminum conductor outer layer 122 is equal, and the two are in one-to-one correspondence, so that the inner and outer layers of the aluminum conductor are two layers. The connection is closer.

When assembling, the front end outer layer of the carbon fiber composite core wire 1 is first stripped to a certain length to expose the core 11, and then the core 11 and the anchor head 26 are aligned, the inner laminated joint 23 is inserted, and the inner laminated joint 23 and the anchor are assembled. The head 26 and the core 11 are integrally pressed together, and then the outer sleeve 24 is placed on the outer surface to anchor the wire 1.

The invention is of course not limited to the embodiments described above, and equivalent variations or substitutions may be made by those skilled in the art without departing from the spirit of the invention, and such equivalents or alternatives are included in the claims of the present application. Within the limits.

Claims

A joint structure of a carbon fiber composite core wire, comprising: a wire and a joint, the wire comprising a wire core and a conductive layer covering the wire core, the joint joint comprising a steel anchor and a steel anchor A drain wire clamp, the end section of the steel anchor is provided with an inner laminated joint, and the inner laminated joint is jacketed with an outer sleeve, and the inner laminated joint is provided with a cavity into which the core is embedded.
The joint structure of a carbon fiber composite core wire according to claim 1, wherein a final section of the steel anchor is connected to the inner laminated joint, and the two are integrally connected, and the core and the inner laminated joint are connected. A protective layer is also provided, the protective layer covering the core and embedded in the inner laminated joint.
The joint structure of a carbon fiber composite core wire according to claim 1, wherein an end portion of the steel anchor is coupled with an anchor head, and an outer laminated joint of the anchor head is sleeved on the anchor head. The interior of the inner laminate is provided with a plurality of grooves.
The joint structure of a carbon fiber composite core wire according to claim 2 or 3, wherein the inner laminate joint is an aluminum alloy member, and the outer sleeve is an aluminum or aluminum alloy member.
The joint structure of a carbon fiber composite core wire according to claim 2 or 3, wherein one end of the outer sleeve is sleeved with the end of the steel anchor and the inner laminated joint is completely covered. The steel anchor is provided with a plurality of grooves in the inner sleeve.
A joint structure of a carbon fiber composite core wire according to claim 1, 2 or 3, wherein said core is composed of 2 The carbon fiber composite core of the root or above is twisted.
The joint structure of a carbon fiber composite core wire according to claim 1, 2 or 3, wherein the conductive layer is divided into an inner layer of an aluminum conductor and an outer layer of an aluminum conductor, and the inner layer of the aluminum conductor is a plurality of aluminum conductors Wound outside the wire core, arranged in a spiral counterclockwise direction along the core direction to form an inner layer of the aluminum conductor; the outer layer of the aluminum conductor is arranged in a spiral clockwise direction along the core direction by a plurality of aluminum conductors, and can be prevented by reverse winding The wire is twisted and tightly wound around the inner layer of the aluminum conductor.
The joint structure of a carbon fiber composite core wire according to claim 7, wherein the aluminum conductor of the inner layer of the aluminum conductor has a trapezoidal cross section and a Z Shape or circle; the aluminum conductor of the outer layer of the aluminum conductor has a trapezoidal, Z-shaped or circular cross section.
The joint structure of a carbon fiber composite core wire according to claim 7, wherein the aluminum conductor of the inner layer of the aluminum conductor has a concave cross section, and the aluminum conductor of the outer layer of the aluminum conductor has a cross section that matches the inner layer of the aluminum conductor. Convex shape.
The joint structure of a carbon fiber composite core wire according to claim 7, wherein the aluminum conductor of the inner layer of the aluminum conductor is convex, and the aluminum conductor of the outer layer of the aluminum conductor is concave with the inner layer of the aluminum conductor.