CN102163830A - Linear interconnection method and device for optical fiber composite power cable - Google Patents

Abstract

The invention provides a method and a device for linear splicing of optical fiber composite power cables. The splicing device according to the present invention includes two tension-resistant pre-twisted wire fittings (1), which are respectively arranged at the two ends of the optical fiber composite power cable (5) to be spliced, and also includes: a tension member (2), which is connected to the two ends respectively On the two tension-resistant pre-twisted wire fittings (1) at the opposite end, it is used to tighten and fix the optical fiber composite power cable (5); the middle joint box (3) is provided with two cable inlets (35), respectively The optical fiber wire to be connected of the optical fiber composite power cable (5). This connection device can realize the connection of optical fiber composite phase line (OPPC) or optical fiber composite overhead ground wire (OPGW) in a straight line. It has the performances of tension connection, communication optical fiber connection and power wire connection, and all performances can reach the operation standard of normal high-voltage transmission lines. Require. According to the linear splicing method of optical fiber composite power cables of the present invention, the above-mentioned splicing device is applied.

Description

Optical fiber composite power cable linear splicing method and device

technical field

The invention relates to a power system, in particular to a method and a device for straight-line splicing of an optical fiber composite power cable.

Background technique

Optical fiber composite phase line (OPPC) and optical fiber composite overhead ground wire (OPGW) are characterized by communication optical fibers inside, which can not only transmit current, but also communicate. However, due to this feature, it cannot be squeezed, and the conventional crimping process cannot be used for straight-line splicing, and at the same time optical fiber splicing is required, so the shortcomings in use must be carried out on the strain tower of the high-voltage transmission line. However, the number of tension towers of normal transmission lines is small, and each tension section is relatively long. Once the wires in this section have problems such as disconnection, etc., the optical fiber composite phase conductor (OPPC) of the entire tension section must be replaced. , This will waste a lot of capital costs and labor, and also bring great difficulties to design, infrastructure construction and manufacturing.

Contents of the invention

The present invention aims to provide a method and device for straight-line splicing of optical fiber composite power cables, which can realize the splicing of optical fiber composite phase wire (OPPC) or optical fiber composite Conductor connection performance, all performances meet the standard requirements for normal high-voltage transmission line operation.

In order to achieve the above object, according to one aspect of the present invention, a linear splicing device for an optical fiber composite power cable is provided, including: two tension-resistant pre-twisted wire fittings, which are respectively arranged at the two ends of the optical fiber composite power cable to be connected, and : Tensioning parts, the two ends are respectively connected to the two tension-resistant pre-twisted metal fittings at the opposite end, which are used to tighten and fix the optical fiber composite power cable; the middle joint box is provided with two cable inlets, which are respectively introduced into the optical fiber composite power cable. The optical fiber conductor to be connected of the cable: the current conductor to be connected at both ends of the optical fiber composite power cable to be connected.

Further, the intermediate joint box includes: a box body shell; a straight handle section, which is arranged on the edge of the box body shell, with wire inlets at both ends, and a wire fastening structure is arranged in the wire inlet; the straight handle section and the box body shell There is a cable entry hole connecting the wire inlets at both ends at the joint, and the cable entry hole communicates with the inner cavity of the box shell.

Further, the intermediate splice box further includes: a fiber tray, which is arranged in the casing of the box body, and the optical fiber wires are coiled on the fiber tray.

Further, the two ends of the draining wire are respectively provided with connecting clips, and the draining wire is connected to the current wire to be connected through the connecting clips.

According to another aspect of the present invention, a method for linearly splicing an optical fiber composite power cable is provided, including: tightening and fixing two sections of the optical fiber composite power cable by using a tension member; using an intermediate splice box to perform optical fiber splicing on the optical fiber composite power cable; Perform current splicing on optical fiber composite power cables.

Further, performing current connection on the optical fiber composite power cable includes: using a drain wire to connect two sections of current wires to be connected.

Further, tightening and fixing the two sections of optical fiber composite power cables includes: using two pieces of tension-resistant pre-twisted metal fittings of the same specification as the cables to be connected to respectively pull the two ends of the optical fiber composite power cables; Two tension-resistant pre-twisted fittings at the end; adjust the tensioning parts to restore the original tension and position of the entire optical fiber composite power cable.

Further, using the intermediate joint box to perform optical fiber splicing on the optical fiber composite power cable includes: respectively introducing the two optical fiber conductors stripped from the optical fiber composite power cable into the intermediate joint box for fixing; continue.

Further, using the drain wire to connect two sections of current wires to be connected includes: connecting a drain wire with a clamp at both ends to the current wire of the optical fiber composite power cable at both ends through the clamp.

According to the technical solution of the present invention, the optical fiber composite power cable linear splicing device includes a tension member, an intermediate junction box and a drain wire, which can realize the optical fiber composite phase line (OPPC) and the optical fiber composite overhead ground wire (OPGW) to be spliced in a straight line. It has the performance of tension connection, communication optical fiber connection and power wire connection, all of which meet the requirements of normal high-voltage transmission line operation standards. The non-insulated intermediate joint box is made of light metal thin shell material. The entire weight can be supported by the tension of OPPC phase wires or suspended by ordinary conventional insulators. It has a simple structure, is easy to use, and saves costs. The wedge-shaped wire clamp is designed with a locking pin on the wire clamp and the wedge, which can automatically form a self-lock during installation. The installation is quick and does not require special tools, just a simple knock.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention, and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, and do not constitute improper limitations to the present invention. In the attached picture:

Fig. 1 shows a schematic diagram of connecting a linear splicing device for an optical fiber composite power cable according to an embodiment of the present invention;

Fig. 2 shows a schematic structural diagram of a linear splicing device for an optical fiber composite power cable according to an embodiment of the present invention;

Fig. 3 shows a partial cross-sectional structural schematic diagram of a non-insulated intermediate splice box of an optical fiber composite power cable linear splicing device according to an embodiment of the present invention; and

FIG. 4 shows a schematic diagram of a side cross-sectional structure according to FIG. 3 .

Detailed ways

Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

As shown in Figures 1 and 2, the optical fiber composite power cable linear splicing device according to the present invention includes tension-resistant pre-twisted wire fittings 1, which are respectively arranged at the two ends of the optical fiber composite power cable 5 to be connected, tension members 2, two The ends are respectively connected to the tension-resistant pre-twisted wire fittings 1 at the two opposite ends, which are used to tighten and fix the optical fiber composite power cable 5; Fiber optic cables to be spliced. When connecting two sections of optical fiber composite power cables 5, firstly install tension-resistant pre-twisted wire fittings 1 of the same specifications as the wires on the rear parts of the joint ends of the two sections of optical fiber composite power cables 5 to be connected, and then The optical fiber composite power cable 5 at both ends is tightened by the tension pre-twisted wire fitting 1, and the two opposite end tension pre-twisted wire fittings 1 are tightened and fixed by the tensioning member 2, so that the entire optical fiber composite power cable 5 Return to original tension and position.

The tension member 2 is a tensile material such as a steel wire or a wire. Preferably, the tension member 2 can tighten and fix the tension-resistant pre-twisted wire fittings 1 at two opposite ends, and can adjust the tension of the optical fiber composite power cable 5. Make adjustments. After the optical fiber composite power cable 5 is tightened and fixed, the end to be connected is stripped off, and the optical fiber wire to be connected and the current wire to be connected are separated. Connect the ends of the two optical fiber wires to be connected through the two connection ports of the intermediate splice box 3 respectively, and peel off the optical fiber metal tube in the intermediate splice box, and place the reserved part of the optical fiber metal tube in the intermediate splice box 3 The coil is coiled, and then the optical fiber is stripped for fusion splicing, so as to maintain the good transmission performance of the spliced optical fiber part.

A heat-shrinkable tube 37 is provided in the intermediate splice box 3. After the two sections of optical fibers to be spliced are fused to each other at the joint, the fusion joint is put into the heat-shrinkable tube 37, so as to effectively protect the fused part of the optical fiber. Afterwards, the drain wire 4 is introduced, and the two ends of the drain wire 4 are respectively connected to the current wire to be connected of the optical fiber composite power cable 5 to realize the current connection. Connection has a good effect.

According to the splicing device of the present invention, two sections of optical fiber composite power cables can be directly connected, and there is no need to replace the entire tension section of the optical fiber composite power cable when the wire in the tension section is disconnected, and the connection can be performed in a straight line. It is simple and convenient to improve the splicing efficiency of optical fiber composite power cables, increase the applicability of optical fiber composite power cables, and make the splicing device according to the present invention have the performances of tension splicing, communication optical fiber splicing, power conductors, etc., and can be used in optical fiber composite power cables It can also be used in the initial design and construction during the restoration of the transmission line accident disconnection, which effectively reduces the cost and improves the work efficiency, so that the optical fiber composite power cable can be popularized and used without restriction.

As shown in Figure 3 and Figure 4, according to the intermediate splicing box of the optical fiber composite power cable linear splicing device according to the embodiment of the present invention, in this embodiment, the intermediate splicing box 3 is a non-insulated intermediate splicing box including a box shell 31 The straight handle section 32 is arranged on the edge of the box body shell 31, and the two ends have a wire inlet 33, and a fastening structure 34 is arranged in the wire inlet 33; there is a connection at the junction of the straight handle section 32 and the box body shell 31 The cable entry hole 35 of the wire entry port 33 at both ends communicates with the inner cavity of the box shell 31 . Inside the box shell 31, there is also a fiber tray 36 for winding the optical fiber wire into a predetermined shape. The intermediate splice box 3 is fixedly arranged on the tension member 2, and the intermediate splice box 3 is made of light metal thin shell material, and the entire weight can be supported by the tension of the optical fiber composite power cable 5. Preferably, the fastening structure 34 is a clamping block with an opening on one side, a light hole is provided on the upper edge of the clamping block, and a bolt hole is provided on the lower edge, and the tension bolt is loaded into the bolt hole on the lower edge from the light hole side , rotating and tightening the bolt, the opening of the clamping block can be pressed tightly, thereby pressing down the optical fiber composite power cable to be connected, forming a good fixation and making it have a stable connection structure. The optical fiber metal tube that enters the intermediate splice box 3 from the two cable inlet holes 35 of the intermediate splice box 3, the reserved length part is coiled around the fiber disc 36 to form a circle, and the extension direction of the two joints is formed at the joint. The tangential structure, the metal pipe part of the two pipeline joints is stripped out of the optical fiber, and then fused to complete the splicing of the optical fiber part. Fill the pipe with sealing colloid to achieve good sealing of the connecting device and improve its waterproof performance and corrosion resistance.

As a preferred embodiment of the present invention, connecting clips 41 are arranged at both ends of the drainage wire 4, and the connecting clips 4 are respectively arranged on the optical fiber wires to be connected. Preferably, the clamp 41 is a wedge-shaped clamp, which is a C-shaped aluminum alloy clamp, supplemented by a wedge, and a locking pin is designed on the clamp and the wedge, which can automatically form a self-locking when installed ;Easy to install quickly, no special tools are needed, just tap; the wire clamp comes with a grip force positioning piece, when the positioning piece falls into the groove, the set grip force is reached.

When the optical fiber composite power cable loses its wire length due to disconnection, it is necessary to use two fiber optic composite power cable linear splicing devices for continuous connection, and connect a section of fiber optic composite power cable to be connected between the two optical fiber composite power cable linear splicing devices. Optical fiber composite power cables with the same specifications are used to realize the splicing of optical fiber composite power cables, and the splicing principle is the same as above.

According to the linear splicing method of the optical fiber composite power cable of the present invention, the above-mentioned splicing device is applied, and the details are as follows: use two tension-resistant pre-twisted wire fittings 1 of the same specification as the wires to respectively pull the two ends of the optical fiber composite power cable 5 , use the tensioning piece 2 to connect the tension-resistant pre-twisted wire fittings 1 at the two opposite ends, adjust the tensioning piece 2 to restore the original tension and position of the entire optical fiber composite power cable 5, and then fix it. The two optical fiber conductors stripped from the optical fiber composite power cable 5 are respectively introduced into the intermediate splice box 3 for fixing, and then the ends of the two optical fiber conductors are stripped out of the optical fibers for splicing. Then add a drain wire 4, and connect them to the optical fiber composite power cable at both ends in parallel with the junction clips respectively, to complete the continuous connection of the current wire, and fix the continued current wire on the intermediate joint box 3.

From the above description, it can be seen that the above-mentioned embodiments of the present invention have achieved the following technical effects: the optical fiber composite phase line (OPPC) or the optical fiber composite overhead ground wire (OPGW) can be connected in a straight line, with tension connection, Communication optical fiber connection and power wire connection performance, all performances meet the standard requirements for normal high-voltage transmission line operation. The non-insulated intermediate joint box is made of light metal thin shell material. The entire weight can be supported by the tension of OPPC phase wires or suspended by ordinary conventional insulators. It has a simple structure, is easy to use, and saves costs. The wedge-shaped wire clamp is designed with a locking pin on the wire clamp and the wedge, which can automatically form a self-lock during installation. The installation is quick and does not require special tools, just a simple knock.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (9)

1. A linear splicing device for an optical fiber composite power cable, comprising: two tension-resistant pre-twisted wire fittings (1), respectively arranged at the two ends of the optical fiber composite power cable (5) to be connected, characterized in that it also includes: A tension member (2), the two ends of which are respectively connected to the two tension-resistant pre-twisted metal fittings (1) at the opposite end, are used to tension and fix the optical fiber composite power cable (5); The intermediate splice box (3) is provided with two cable inlets (35), respectively introducing the optical fiber conductors to be connected of the optical fiber composite power cable (5); The two ends of the drainage wire (4) are respectively connected to the current wires to be connected at the two ends of the optical fiber composite power cable (5) to be connected. 2. The optical fiber composite power cable linear splicing device according to claim 1, characterized in that, the intermediate splice box (3) comprises: Box shell (31); The straight handle section (32) is arranged on the edge of the box shell (31), has wire inlets (33) at both ends, and a wire fastening structure (34) is arranged in the wire inlet (33); At the junction of the straight handle section (32) and the box shell (31), there is the cable inlet (35) connecting the wire inlets (33) at both ends, and the cable inlet (35) ) communicates with the inner chamber of the box shell (31). 3. The optical fiber composite power cable linear splicing device according to claim 2, characterized in that, the intermediate splice box (3) further comprises: A fiber disk (36) is arranged in the box casing (31), and the optical fiber wires are coiled on the fiber disk (36). 4. The optical fiber composite power cable linear splicing device according to any one of claims 2 or 3, characterized in that, the two ends of the drain wire (4) are respectively provided with clamps (41), and the drain wire (4) 4) Connecting the current wire to be connected through the terminal clip (41). 5. A method for linear splicing of optical fiber composite power cables, characterized in that it comprises: Use tensioning parts (2) to tension and fix the two sections of optical fiber composite power cables (5); performing optical fiber splicing on the optical fiber composite power cable (5) by using an intermediate splice box (3); Perform current connection to the optical fiber composite power cable (5). 6. The method for linear splicing of an optical fiber composite power cable according to claim 5, wherein performing current splicing on the optical fiber composite power cable (5) comprises: using a drain wire (4) to connect two segments of current wires to be connected. 7. The straight-line splicing method for optical fiber composite power cables according to claim 5, wherein tightening and fixing the two sections of the optical fiber composite power cables (5) comprises: Pull the two ends of the optical fiber composite power cable (5) respectively by using two pieces of tension-resistant pre-twisted wire fittings (1) that match the cables to be connected; Use the tension member (2) to connect the two tension pre-twisted wire fittings (1) at opposite ends; Adjusting the tension member (2) restores the entire optical fiber composite power cable (5) to its original tension and position. 8. The method for linear splicing of optical fiber composite power cables according to claim 5, characterized in that using an intermediate splice box (3) to perform optical fiber splicing of the optical fiber composite power cables (5) includes: respectively introducing the two optical fiber wires stripped from the optical fiber composite power cable (5) into the intermediate splice box (3) for fixing; Stripping the ends of the two optical fiber conductors out of the optical fibers for splicing. 9. The optical fiber composite power cable linear splicing method according to claim 6, characterized in that, using a drain wire (4) to connect two sections of current wires to be connected comprises: Connect one of the drain wires (4) with connecting clips (41) at both ends to the optical fiber composite power cable (5) at both ends through the connecting clips (41).

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