CN108429019A - Double-aperture five-layer crimping device - Google Patents

Abstract

The embodiment of the invention discloses a double-aperture five-layer crimping device, including a graphite cable grounding down conductor, a galvanized steel terminal board and an intermediate connector, wherein: a graphite cable grounding down conductor, a galvanized steel terminal board, and It includes a flat plate section and a tail pipe, and the tail pipe further includes an inner pipe and an outer pipe arranged in sequence; an intermediate crimping piece; a jacking crimping pipe, which is a metal cylinder; an outer crimping pipe, which is a metal cylinder; the fourth The crimping tube is a metal cylinder; among them, the intermediate crimping piece accommodates and compresses multiple graphite wires protruding from the end, and the multiple graphite wires protrude from the end of the intermediate crimping piece; the jacking crimping tube accommodates the graphite cable grounding The down conductor protrudes from the end with the metal wire and presses it tightly. The multiple metal wires at the protruding end are folded and arranged on the surface of the jacking crimping tube. tight; the inner tube accommodates the intermediate crimping tube, and presses it tightly, and the graphite wire protruding from the intermediate crimping piece is folded and arranged on the outer surface of the inner tube, and the fourth crimping tube is sleeved on the outer surface of the inner tube, and is pressed tight; The tube accommodates the outer crimp tube and compresses it. Implementing the invention, it has strong anti-destructive performance, positioning performance and sealing performance.

Description

A double-aperture five-layer crimping device

technical field

The invention relates to the application field of electric power technology, in particular to the structure of the middle connecting joint of graphite grounding cable.

Background technique

At present, in order to solve the problems of corrosion and theft, the grounding device of transmission line poles and towers promotes the application of flexible graphite composite grounding belts. The flexible graphite composite grounding belts used in applications with large short-circuit currents must be mixed with a small amount of metal wires to increase the grounding belt. Hourly power frequency current withstand capability. This kind of grounding belt is covered with a layer of steel armor on the part of the exposed lead wire that is connected with the tower material to the buried ground to prevent the loss of graphite material and the external force damage of the grounding belt. When the double-layer galvanized steel flat tube compression method is used to make the terminal joint, the double-layer crimping space of the flat tube is not sealed, and the internal metal material corrodes under the action of the environment. At the same time, the pressure of the metal material will change with the temperature, resulting in metal-to-metal contact. Bad, the connection resistance increases, reducing the function of the entire grounding device.

Contents of the invention

The technical problem to be solved by the present invention is to provide a double-aperture five-layer crimping device, which can realize the reliable connection between the graphite cable grounding downconductor and the galvanized steel of the iron tower, and can make the crimping device have a strong anti-destructive ability And better positioning performance and sealing performance.

In order to solve the above technical problems, the present invention provides a double-aperture five-layer crimping device, which is characterized in that it includes a graphite cable grounding downconductor, a galvanized steel terminal board and an intermediate connector, wherein:

Graphite cable grounding down conductors, which respectively include steel armor and graphite woven cloth from outside to inside, the graphite woven cloth is wrapped with a plurality of graphite wires and metal wires, and the plurality of graphite wires and metal wires protrude from the One end of the graphite cable grounding down conductor is outside and separated;

A galvanized steel terminal board, which includes a flat plate section and a tail pipe, the tail pipe further includes an inner pipe and an outer pipe arranged in sequence, and the diameter of the outer pipe is larger than the diameter of the inner pipe;

an intermediate crimping part, the intermediate crimping part is a metal cylinder with a gap;

The jacking crimping tube is a metal cylinder;

The outer crimping tube is a metal cylinder;

The fourth crimping pipe is a galvanized steel pipe with threads bored on the inner surface;

Wherein, the intermediate crimping member accommodates and compresses a plurality of graphite wires protruding from the end, and the plurality of graphite wires protrude from the end of the intermediate crimping member;

The jacking crimping tube accommodates one end of the graphite cable grounding down conductor protruding from the metal wire and presses it tightly, and the multiple metal wires at the protruding end are folded back and arranged on the surface of the jacking crimping tube, The outer crimping tube is sleeved on the outermost side of the jacking crimping tube and pressed tightly;

The inner tube accommodates the intermediate crimping tube and presses it tightly, and the graphite wire protruding from the intermediate crimping piece is folded and arranged on the outer surface of the inner tube, and the outer surface of the inner tube is sleeved with the The fourth crimping pipe, and compression;

The outer tube accommodates and compresses the outer crimping tube.

Implementing the embodiment of the present invention has the following beneficial effects:

The tubular double-aperture five-layer crimping device provided by the invention can compress the graphite wire protruding from the graphite cable grounding down conductor into the middle crimping piece, and crimp the end of the graphite cable grounding down conductor on the top. Then lay the metal wire on the surface of the jacking crimping tube, and use the outer layer crimping parts to compress, and the middle crimping part and the outer layer crimping parts are accommodated in the galvanized steel wiring At the same time, a layer of fourth crimping tube is set on the surface of the inner tube of the tail tube to further fix the graphite wire protruding from the end of the intermediate crimping tube, so that the metal wire and the plating can be realized. The galvanized steel is directly contacted and connected, and the graphite wire and the galvanized steel of the iron tower are also reliably contacted and connected, which ensures that the terminal joint has excellent electrical conductivity and is not lower than the grounding cable body;

At the same time, since one end of the graphite cable grounding down conductor is integrally accommodated in the crimping piece and extruded, as well as the subsequent extrusion of the tail pipe, the protective effect of the steel armor in the graphite cable grounding down conductor in the joint can be On the other hand, with the two extrusion actions, it can ensure that the crimping device has a strong anti-destructive ability.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic diagram of the overall application environment of a double-aperture five-layer crimping device provided by the present invention;

Fig. 2 is the structural representation of graphite cable grounding down conductor in Fig. 1;

Fig. 3 is a schematic structural view of a galvanized steel wiring board in Fig. 1;

Fig. 4 is the bottom view of the galvanized steel wiring board in Fig. 3;

Fig. 5 is a schematic structural view of the intermediate crimping member in Fig. 1;

Fig. 6 is a structural schematic diagram of the outer layer crimping tube;

Fig. 7 is a schematic diagram of a cross-sectional structure along A-A in Fig. 1;

FIG. 8 is a schematic diagram of a cross-sectional structure along the direction B-B in FIG. 1 .

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Here, it should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only the structures and/or processing steps closely related to the solution according to the present invention are shown in the drawings, and the related Other details are not relevant to the invention.

As shown in FIG. 1 , it shows a schematic diagram of the overall application environment of a double-aperture five-layer crimping device provided by the present invention; combined with FIG. 2 to FIG. 7 . In this embodiment, the tubular double-aperture five-layer crimping device includes a graphite cable grounding downconductor 9, a galvanized steel terminal plate 8, and an intermediate connector 10, wherein:

Graphite cable grounding down conductor 9, which respectively includes steel armor 93 and graphite woven cloth 90 from outside to inside. The graphite woven cloth 90 is wrapped with a plurality of graphite wires 92 and metal wires 91 that are stacked. The graphite wire 92 and a plurality of metal wires 91 protrude from one of the ends of the graphite cable grounding down conductor 9; wherein the steel armor 93 can enhance the ability of the graphite cable grounding down conductor 9 to prevent external force damage;

Galvanized steel terminal board 8, which includes a flat plate section 80 and a tail pipe, the flat plate section 80 is provided with a fixing hole 800 connected to the iron tower, and the tail pipe further includes an inner pipe 81 and an outer pipe 82 arranged in sequence , the diameter of the outer tube 82 is greater than the diameter of the inner tube 81. In a specific example, the inner tube and the outer tube can be formed by bending metal sheets inward, as shown in FIG. 3 ;

An intermediate crimping member 10, the intermediate crimping member 10 is formed by bending a rectangular thin metal sheet, and its inner wall is covered with a layer of graphite paper 12 through carbon nano conductive adhesive, as shown in Figure 5 for details;

The outer crimping tube 16 is a metal cylinder, which can be formed by bending a metal sheet, and its diameter can accommodate the intermediate crimping part 10, as shown in Figure 6;

The jacking crimping tube 17 is a metal cylinder, specifically, it can be formed by bending a metal sheet, and its tube diameter can accommodate the graphite cable grounding down conductor 9 , and its shape is similar to that shown in FIG. 7 .

The fourth crimping pipe 18 is a galvanized steel pipe with threads bored on the inner surface, specifically, it can be formed by bending a galvanized steel sheet, and its pipe diameter can accommodate the inner pipe 81, and its shape is the same as that shown in Figure 7 similar.

Wherein, the intermediate crimping member 10 accommodates and compresses a plurality of graphite wires 92 protruding from the end, and the plurality of graphite wires 92 protrude from the end of the intermediate crimping member 10;

The jacking crimping tube 17 accommodates the end of the graphite cable grounding downconductor 9 protruding from the metal wire and presses it tightly. The multiple metal wires 91 at the protruding end are folded and arranged on the jacking pressure On the surface of the connecting pipe 17, the outer layer crimping pipe 16 is sleeved on the outermost side of the jacking crimping pipe 17 and pressed tightly;

The inner tube 81 accommodates the intermediate crimping tube 10 and presses it tightly, and the graphite wire 92 protruding from the intermediate crimping piece 10 is folded and arranged on the outer surface of the inner tube 81 , and on the inner tube 81 The fourth crimping tube 18 is sheathed on the outer surface and pressed tightly;

The outer tube 82 accommodates the outer crimping tube 16 and compresses it.

The following briefly introduces the construction process of the intermediate connector in the implementation application:

First, make the tail pipe of the galvanized steel terminal board 8, adopt a steel plate (as shown in Figure 3), and bend it 180 degrees from one end to the other end to form the inner pipe 81; the other end is bent 360 degrees to the opposite side, An outer tube 82 is formed. The width of the steel plate of the inner pipe 81 is only the general of the width of the outer pipe 82, and the thickness of the inner pipe 81 is smaller than that of the outer pipe 82

Then, the end of the graphite cable grounding down conductor 9 is stripped off a certain length of steel armor 93 and graphite woven cloth 90, and the metal wire 91 and graphite wire 92 at the end are exposed, and the separated graphite wire 92 is inserted into the In the intermediate crimping piece 10, and protruding from the end of the intermediate crimping piece 10;

Set the jacking crimping tube 17 on the end of the graphite cable grounding down conductor 9 protruding from the metal wire and press it tightly, fold the plurality of metal wires 91 at the protruding end and arrange them on the The surface of the jacking crimping tube 17, and then the outer layer crimping tube 16 is sleeved on the outermost side of the jacking crimping tube 17 and pressed tightly;

Insert the crimped intermediate crimping tube 10 into the inner tube 81 of the tail pipe, and at the same time insert the crimped outer layer crimping tube 169 into the outer tube 82 of the tail pipe, and then squeeze the tail pipe vertically up and down; at this time Graphite wire 92 reserved at the front end is folded back and pressed on the outer surface of inner tube 81, and then put on the fourth crimping tube 18. While tightening the graphite wire 92, press the fourth crimping tube 18 vertically and horizontally relative to each other, relying on the graphite wire 81 It is mainly responsible for the pulling effect of the external force of the graphite strip grounding down conductor.

Thus, forming a terminal joint for connecting the graphite strip grounding down conductor to the iron tower material can realize the complete metal connection of the metal wire, and at the same time, the protective effect of the steel armor will not be affected.

Implementing the embodiment of the present invention has the following beneficial effects:

The tubular double-aperture five-layer crimping device provided by the invention can compress the graphite wire protruding from the graphite cable grounding down conductor into the middle crimping piece, and crimp the end of the graphite cable grounding down conductor on the top. Then lay the metal wire on the surface of the jacking crimping tube, and use the outer layer crimping parts to compress, and the middle crimping part and the outer layer crimping parts are accommodated in the galvanized steel wiring in the tailpipe of the plate and pressed tightly;

At the same time, a layer of fourth crimping tube is set on the surface of the inner tube of the tail pipe to further fix the graphite wire protruding from the end of the intermediate crimping tube, so that the direct contact connection between the metal wire and the galvanized steel can be realized. The galvanized steel also has a reliable contact connection, which ensures that the electrical conductivity of the terminal joint is excellent, not lower than that of the grounding cable body;

At the same time, because one end of the grounding down conductor of the graphite cable is entirely accommodated in the outer tube and squeezed, and the subsequent extrusion of the tail pipe, it can be used for the protection of the steel armor in the grounding down conductor of the graphite cable in the joint. Cooperating with two extrusions, it can ensure that the crimping device has a strong anti-destructive ability;

Since the tail pipe adopts the structure of the inner pipe and the outer pipe, the cooperation between the wedge and the U-shaped groove is set at the same time, and a layer of sealing rubber is arranged on the surface of the V-shaped groove and the V-shaped wedge, so that the positioning is more accurate and the sealing The effect is better, and it can fit the intermediate crimping piece and the graphite cable grounding down conductor more closely, making the structure stronger.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

The above description is only the specific implementation of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present application, some improvements and modifications can also be made. It should be regarded as the protection scope of this application.

Claims (2)

1. A double-aperture five-layer crimping device, characterized in that it includes a graphite cable grounding downconductor, a galvanized steel terminal block and an intermediate connector, wherein: Graphite cable grounding down conductors, which respectively include steel armor and graphite woven cloth from outside to inside, the graphite woven cloth is wrapped with a plurality of graphite wires and metal wires, and the plurality of graphite wires and metal wires protrude from the One end of the graphite cable grounding down conductor is outside and separated; A galvanized steel terminal board, which includes a flat plate section and a tail pipe, the tail pipe further includes an inner pipe and an outer pipe arranged in sequence, and the diameter of the outer pipe is larger than the diameter of the inner pipe; an intermediate crimping part, the intermediate crimping part is a metal cylinder with a gap; The jacking crimping tube is a metal cylinder; The outer crimping tube is a metal cylinder; The fourth crimping pipe is a galvanized steel pipe with threads bored on the inner surface; Wherein, the intermediate crimping member accommodates and compresses a plurality of graphite wires protruding from the end, and the plurality of graphite wires protrude from the end of the intermediate crimping member; The jacking crimping tube accommodates one end of the graphite cable grounding down conductor protruding from the metal wire and presses it tightly, and the multiple metal wires at the protruding end are folded back and arranged on the surface of the jacking crimping tube, The outer crimping tube is sleeved on the outermost side of the jacking crimping tube and pressed tightly; The inner tube accommodates the intermediate crimping tube and presses it tightly, and the graphite wire protruding from the intermediate crimping piece is folded and arranged on the outer surface of the inner tube, and the outer surface of the inner tube is sleeved with the The fourth crimping pipe, and compression; The outer tube accommodates and compresses the outer crimping tube. 2 . The double-aperture five-layer crimping device according to claim 1 , wherein the thickness of the inner tube is smaller than that of the outer tube. 3 .