CN211858182U - Novel portable parallel bundling prefabricated branch cable - Google Patents

Abstract

The utility model discloses a novel parallel prefabricated branch cable tied in a bundle of portable, including the parallel insulating core tied in a bundle of a plurality of roots, a plurality of insulating core are in branch joint department separation, and each insulating core independently connects through the branch. Above-mentioned technical scheme changes the outer jacket structure into with the parallel some insulation core parallel extrusion modes that the air wire tied in a bundle the same, and the branch joint on each core of this structure is unanimous with former single core branch head size, has both avoided the too big problem of branch joint, has solved the cable construction cycle again, the potential safety hazard problem that drops after the fixed.

Description

Novel portable parallel bundling prefabricated branch cable

Technical Field

The utility model relates to a power transmission field especially relates to a novel parallel prefabricated branch cable tied in a bundle of portable.

Background

Data show that with the rapid development of domestic real estate industry in recent years, various high-rise residences, office buildings, hotels, hospitals and large public places are raised, and the market demand of the pre-branch cables is as high as about 80 billion yuan. However, as market demand increases, the pre-branch cables of conventional construction also exhibit their own drawbacks. The traditional pre-branch cable is mainly divided into two structures: single core and multi-core. Both configurations have their own drawbacks.

Multi-core structure: 1. the outer diameter of the multi-core prefabricated branch cable at the branch joint is too large; 2. the branch joint of the multi-core prefabricated branch cable is too long, and the bending radius of the cable is large. 3. Inconvenient later maintenance, when individual sinle silk broke down, inconvenient trouble point of looking for. The points bring great difficulties to the installation, construction and maintenance of the narrow electric well pipeline of the high-rise building. Single core type structure: 1. the single-core type prefabricated branch cable is low in efficiency in production, such as: one loop of the three-phase five-wire pre-branch cable is composed of five single-core cables, and the three-phase five-wire pre-branch cable is repeatedly coiled during production, so that the production efficiency of products is greatly influenced, and the reason why the delivery cycle of the branch cable is long generally exists is also the reason why. 2. The single-core type prefabricated branch cable is low in installation efficiency, the time for hanging one cable is long because products are mostly applied to high-rise buildings, and one loop of the single-core type branch cable is equivalent to five cables, so that the time and the manpower and material resources are wasted. 3. When the single-core cable traction head is fixed, the sheath and the insulating contact surface of the single-wire cable are relatively smooth, so that the phenomenon that the insulating wire core of the cable slips from the traction net cover can occur, and hidden danger is brought to a power supply system.

Chinese patent document CN103325450A discloses a "pre-branch cable". The cable comprises a main cable, a branch cable and a branch connecting body for connecting the two cables, wherein the main cable and the branch cable are different in structure, the main cable comprises a main conductor, a first insulating layer, a wrapping tape and a first sheath layer, the first insulating layer, the wrapping tape and the first sheath layer are sequentially wrapped outside the main conductor, and the branch cable comprises a branch conductor, a second insulating layer and a second outer sheath, the second insulating layer and the second outer sheath are sequentially extruded outside the branch conductor; the branch connecting body is internally provided with a connecting joint which connects the main conductor and the branch conductor together, and the joint is extruded with an isolation belt after being pressed and connected with the wrapping belt of the main cable and the second insulating layer of the branch cable in a lapping way. The branch joint of the technical scheme is too long, the bending radius of the cable is very large, the later maintenance is inconvenient, and the troubleshooting and the maintenance are not easy to occur when the fault occurs.

Disclosure of Invention

The utility model discloses mainly solve original cable branch and connect too thick, later maintenance difficult technical problem provides a novel portable parallel prefabricated branch cable tied in a bundle, changes the outer jacket structure into with the parallel several insulation core parallel extrusion modes that are the same with parallel air wire tied in a bundle, and the branch on each core of this structure connects unanimous with former single core branch head size, has both avoided the too big problem of branch joint, has solved cable construction cycle length again, the potential safety hazard problem that drops after fixed.

The above technical problem of the present invention can be solved by the following technical solutions: the utility model discloses an insulating sinle silk that a plurality of parallels were tied a bundle, a plurality of insulating sinle silks connect the department at the branch and separate, and each insulating sinle silk independently connects and branch cable through the branch. The parallel bundling of insulated wire core is placed and is avoided branch joint department transposition to lead to the cable radius too thick, and when certain insulated wire core broke down, pinpointing and convenient the change.

Preferably, the insulating wire core sequentially comprises a conductor, an insulating layer and a parallel sheath layer from inside to outside. The conductor plays the effect of current conduction, and the insulating layer avoids the inner conductor electric leakage, and parallel restrictive coating plays the fixed action to the insulation core in the protection cable.

Preferably, the branch joint comprises a conductor and a branch cable conductor, the surfaces of the conductor and the branch cable conductor are provided with copper joints, and the surface of each copper joint is provided with a parallel sheath layer. The copper joint has the functions of fixing the conductor and the branch cable conductor and assisting in conducting electricity.

Preferably, the copper joint is a sheet-shaped copper strip which covers the surface of the conductor and the conductor of the branch cable. The sheet copper strip can completely coat the conductor and the branch cable conductor so as to realize good electric power conduction.

Preferably, the conductor and the branch cable conductor are formed by stranding a plurality of soft copper wires. The service life is prolonged, and the manufacturing cost is reduced.

Preferably, the insulating wire cores are arranged in parallel, the insulating wire cores are fixed through parallel sheath layers, and the parallel sheath layers are made of PVC materials. The insulating core is fixed through parallel restrictive coating and is kept the parallel state, the inspection maintenance of being convenient for, and the PVC material has that the plasticity is good, and is corrosion-resistant, waterproof insulating's characteristics.

The utility model has the advantages that: the outer protective layer structure is changed into a mode of extruding a plurality of insulation wire cores in parallel like a parallel cluster overhead conductor, the branch joint on each core of the structure is consistent with the size of the original single-core branch head, the problem that the branch joint is too large is avoided, and the problems of long construction period of the cable and potential safety hazard caused by falling off after fixation are solved.

Drawings

Fig. 1 is a plan view of the present invention.

Fig. 2 is a cross-sectional view of an unbranched joint of the present invention.

Fig. 3 is a cross-sectional view of a branch head of the present invention.

In the figure, 1 insulating wire core, 1.1 conductor, 1.2 insulating layer, 1.3 parallel sheath layer, 2 branch joints, 2.1 branch cable conductor, 2.2 copper joint and 3 branch cable

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Example (b): the utility model provides a novel parallel prefabricated branch cable tied in a bundle of portable, as shown in the attached drawing, including a plurality of parallel insulating core 1 tied in a bundle, insulating core 1 is conductor 1.1, insulating layer 1.2 and parallel restrictive coating 1.3 from inside to outside in proper order, and the conductor plays the effect of electric current conduction, and the insulating layer avoids the inner conductor electric leakage, and parallel restrictive coating plays fixed action to insulating core when the protection cable. A plurality of insulation core 1 separate in branch joint department, and branch connects 2 including conductor 1.1 and branch cable conductor 2.1, and conductor 1.1 and branch cable conductor 2.1 surface cladding have copper joint 2.2, and copper joint 2.2 surface is equipped with parallel restrictive coating 1.3, and copper joint plays fixed conductor and branch cable conductor and supplementary electrically conductive function. The copper joint 2.2 is a sheet copper strip which covers the surface of the conductor 1.1 and the surface of the branch cable conductor 2.1, and the sheet copper strip can completely cover the conductor and the branch cable conductor so as to realize good electric power conduction. The conductor 1.1 and the branch cable conductor 2.1 are formed by stranding a plurality of strands of annealed copper wires, so that the service life can be prolonged, and the manufacturing cost can be reduced. A plurality of insulation core 1 parallel placement to it is fixed through parallel restrictive coating 1.3 between the insulation core 1, and insulation core is fixed through parallel restrictive coating and is kept the parallel state, the inspection and maintenance of being convenient for, and parallel restrictive coating 1.3 is the PVC material, and it is good to have plasticity, corrosion-resistant, waterproof insulating's characteristics. Each insulated wire core 1 independently passes through branch and connects 2 to constitute branch cable 3 through parallel restrictive coating 1.3 and branch and connect 2 fixed connection.

During the use, the parallel bundling of insulation core is placed, avoids branch joint department transposition to lead to the cable radius too thick, and each insulation core 1 independently passes through branch joint 2 to constitute branch cable 3 through parallel restrictive coating 1.3 and branch joint 2 fixed connection. When the cable breaks down, a specific certain insulated wire core is accurately positioned, and the cable is convenient to maintain or replace.

Claims (6)

1. The utility model provides a prefabricated branch cable of novel parallel tied in a bundle of portable which characterized in that, includes a plurality of parallel insulated wire core (1) tied in a bundle, and a plurality of insulated wire core (1) separate in branch joint (2) department, and each insulated wire core (1) independently passes through branch joint (2).

2. The novel portable parallel bundled prefabricated branch cable according to claim 1, characterized in that the insulated wire core (1) comprises a conductor (1.1), an insulating layer (1.2) and a parallel sheath layer (1.3) from inside to outside in sequence.

3. The novel portable parallel bundled prefabricated branch cable according to claim 1, characterized in that the branch joint (2) comprises a conductor (1.1) and a branch cable conductor (2.1), the surfaces of the conductor (1.1) and the branch cable conductor (2.1) are provided with a copper joint (2.2), and the surface of the copper joint (2.2) is provided with a parallel sheath layer (1.3).

4. The novel portable parallel bundled prefabricated branch cable according to claim 3, characterized in that the copper connectors (2.2) are sheet copper strips covering the surface of the conductors (1.1) and the conductors (2.2) of the branch cable.

5. A novel portable parallel bundled prefabricated branch cable according to claim 3 characterized in that said conductor (1.1) and branch cable conductor (2.2) are stranded of stranded annealed copper wires.

6. The novel portable parallel bundling prefabricated branch cable according to claim 1, wherein the insulation wire cores (1) are arranged in parallel, the insulation wire cores (1) are fixed through parallel sheath layers (1.3), and the parallel sheath layers (1.3) are made of PVC.

Images