High-strength medium-voltage reel flat cable

Abstract

The utility model relates to a high-strength medium-voltage reel flat cable, which comprises a control wire core, three power wire cores and an outer sheath layer, and is characterized in that each power wire core comprises a power cable core, a first conductor shielding layer, a first insulating layer, a first insulating shielding layer, a first metal braided shielding layer and a first braided reinforcing layer which are concentrically arranged in sequence from inside to outside; each control wire core comprises a control cable core, a second insulating layer, a second insulating shielding layer, a second metal braided shielding layer and a second braided reinforcing layer which are concentrically arranged in sequence from inside to outside, each control cable core comprises a plurality of control wire core units, and a steel wire reinforcing unit is arranged between every two adjacent control wire core units and the second insulating layer; each steel wire reinforcing unit comprises a soft steel wire, a steel wire protection layer is extruded outside each soft steel wire, each control wire core unit comprises a control wire core conductor, and a second conductor shielding layer is extruded outside each control wire core conductor; according to the utility model, cable core breakage can be reduced, so that the service life of the flat cable is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of cables, in particular to a high-strength medium-voltage reel flat cable. Background Art

[0002] At present, the existing reel flat cable usually includes a control wire core, three power wire cores and a flat outer sheath layer; and because the reel flat cable needs to bend back and forth on the reel during the process of winding the reel flat cable in use, the prior art often only focuses on making the reel flat cable have good bending resistance. However, in actual use, when the reel flat cable bends back and forth on the reel more times, the cable cores of the control wire core and the power wire core are prone to breakage, which will affect the service life of the flat cable. That is, in the existing reel flat cable, the structural strength of the cable core needs to be improved. Therefore, there are still shortcomings and deficiencies in the prior art. Utility Model Content

[0003] The purpose of the utility model is to provide a high-strength medium-voltage reel flat cable to solve the problems raised in the above-mentioned background technology.

[0004] In order to solve the above problems, the technical solution adopted by the utility model is:

[0005] A high-strength medium-voltage drum flat cable, comprising a control core and three power cores, the control core and the three power cores are arranged side by side and equidistantly, and the control core and the three power cores are extruded with a flat outer sheath layer, each power core comprises a power cable core, a first conductor shielding layer, a first insulating layer, a first insulating shielding layer, a first metal braided shielding layer and a first braided reinforcement layer which are arranged concentrically from the inside to the outside, the power cable core is formed by twisting a plurality of power core conductors; the control core comprises a control cable core which is arranged concentrically from the inside to the outside The control cable core comprises a plurality of control core units distributed in a circular array, a steel wire reinforcement unit is arranged between every two adjacent control core units and the second insulation layer, the steel wire reinforcement unit and the control core unit are twisted to form a control cable core, the steel wire reinforcement unit comprises soft steel wire, the outside of the soft steel wire is extruded with a steel wire protective layer, the control core units comprise control core conductors, and the outside of the control core conductors is extruded with a second conductor shielding layer.

[0006] Furthermore, the power line core conductor and the control line core conductor are both tinned copper conductors.

[0007] Furthermore, the first insulating layer and the second insulating layer are both made of composite elastomer material.

[0008] Furthermore, the first conductor shielding layer and the second conductor shielding layer are both made of semi-conductive material.

[0009] Furthermore, the first metal braided shielding layer and the second metal braided shielding layer are both braided from tinned copper wires.

[0010] Furthermore, the outer sheath layer is made of thermoplastic polyurethane elastomer rubber.

[0011] Furthermore, the first braided reinforcement layer and the second braided reinforcement layer are both polyester braided reinforcement layers.

[0012] Furthermore, the soft steel wire is formed by regularly twisting multiple strands of fine soft steel wires, and the steel wire protective layer is an environmentally friendly polyvinyl chloride elastomer sheath material layer.

[0013] Furthermore, a plurality of grooves are provided on the top surface and the bottom surface of the outer sheath layer and horizontally penetrate the outer sheath layer, and the grooves are arranged parallel to the axial line of the outer sheath layer.

[0014] By adopting the above technical solution, the beneficial effects of the utility model are:

[0015] On the basis of the existing control core, three power cores and outer sheath layer, the utility model arranges the power cable core to be formed by twisting a plurality of power core conductors, so that the structural strength of the power cable core itself can be improved; at the same time, a steel wire reinforcement unit is added to the control cable core, and when in use, the steel wire reinforcement unit can bear the weight, thereby improving the structural strength of the control cable core itself. In general, the utility model can improve the structural strength of the power cable core and the control cable core, so that when in use, the breakage of the cable core can be reduced, thereby extending the service life of the flat cable; secondly, by arranging a conductor shielding layer, an insulating layer, an insulating shielding layer, a metal braided shielding layer and a braided reinforcement layer, the reel flat cable can have good bending resistance, electrical resistance and tensile resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure numerals: 1. control core; 11. control core unit; 111. control core conductor; 112. second conductor shielding layer; 12. second insulation layer; 13. second insulation shielding layer; 14. second metal braided shielding layer; 15. second braided reinforcement layer; 16. steel wire reinforcement unit; 161. soft steel wire; 162. steel wire protective layer; 2. power core; 21. power cable core; 211. power core conductor; 22. first conductor shielding layer; 23. first insulation layer; 24. first insulation shielding layer; 25. first metal braided shielding layer; 26. first braided reinforcement layer; 3. outer sheath layer; 31. groove. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the implementation mode of the present invention is further described in detail below with reference to the accompanying drawings.

[0019] like Figure 1 As shown, the utility model provides a high-strength medium-voltage reel flat cable, including a control core 1 and three power cores 2, the control core 1 and the three power cores 2 are arranged side by side and equidistantly, and the control core 1 and the three power cores 2 are jointly extruded with a flat outer sheath layer 3, specifically, the control core 1, the three power cores 2 and the outer sheath layer 3 are all prior art; and each power core 2 includes a power cable core 21, a first conductor shielding layer 22, a first insulating layer 23, a first insulating shielding layer 24, a first metal braided shielding layer 25 and a first braided reinforcement layer 26 which are concentrically arranged from the inside to the outside, the first insulating shielding layer 24 is an extruded semi-conductive material shielding layer in the prior art; the power cable core 21 is formed by twisting a plurality of power core conductors 211, which can improve the structural strength of the power cable core 21 itself, and the power core conductor 211 is a tinned copper conductor.

[0020] The control cable core 1 comprises a control cable core, a second insulating layer 12, a second insulating shielding layer 13, a second metal braided shielding layer 14 and a second braided reinforcement layer 15 which are arranged concentrically from the inside to the outside. The second insulating shielding layer 13 is an extruded semi-conductive material shielding layer in the prior art. The control cable core comprises a plurality of control cable core units 11 which are distributed in a circular array. A steel wire reinforcement unit 16 is arranged between every two adjacent control cable core units 11 and the second insulating layer 12. The steel wire reinforcement unit 16 is twisted with the control cable core unit 11 to form a control cable core. In this way, when in use, the steel wire reinforcement unit 16 can bear the load, thereby improving the structural strength of the control cable core itself. In general, the present invention has the advantages of high performance and low cost. The new type can improve the structural strength of the power cable core 21 and the control cable core, so that when in use, it can reduce the possibility of cable core breakage and extend the service life of the flat cable; secondly, by arranging a conductor shielding layer, an insulating layer, an insulating shielding layer, a metal braided shielding layer and a braided reinforcement layer, the reel flat cable can have good bending resistance, electrical resistance and tensile resistance; and the steel wire reinforcement unit 16 includes a soft steel wire 161, and the soft steel wire 161 is extruded with a steel wire protective layer 162, and the control core unit 11 includes a control core conductor 111, and the control core conductor 111 is extruded with a second conductor shielding layer 112, and the control core conductor 111 is a tinned copper conductor.

[0021] Furthermore, the first insulating layer 23 and the second insulating layer 12 are both made of a composite elastomer material. Specifically, the composite elastomer material may be a nitrile composite elastomer, and the extrusion is performed by extrusion.

[0022] Furthermore, the first conductor shielding layer 22 and the second conductor shielding layer 112 are both made of semi-conductive materials. Specifically, the semi-conductive materials are made of corresponding insulating materials such as polyvinyl chloride, polyethylene, cross-linked polyethylene, carbon black, antioxidants, ethylene-vinyl acetate copolymers and other compounding agents, so that the reel flat cable has good electrical resistance.

[0023] Furthermore, the first metal braided shielding layer 25 and the second metal braided shielding layer 14 are both braided from tinned copper wires, so that the reel flat cable has good anti-interference capability to ensure the normal operation of the equipment connected to the reel flat cable.

[0024] Furthermore, the outer sheath layer 3 is made of thermoplastic polyurethane elastomer rubber, which has strong elasticity and wear resistance and can withstand the bending of the reel flat cable to avoid cracking of the outer skin; the first braided reinforcement layer 26 and the second braided reinforcement layer 15 are both polyester braided reinforcement layers, and the polyester braided reinforcement layer can make the outer sheath layer 3 have good twisting resistance.

[0025] Furthermore, the soft steel wire 161 is formed by regular twisting of multiple strands of fine soft steel wires, and the steel wire protective layer 162 is an environmentally friendly polyvinyl chloride elastomer sheath material layer, which can make the control cable core have higher mechanical strength and be resistant to bending.

[0026] Further, such as Figure 1 As shown, a plurality of grooves 31 are provided on the top and bottom surfaces of the outer sheath layer 3 and penetrate the outer sheath layer 3 horizontally. The grooves 31 are arranged parallel to the axial line of the outer sheath layer 3. Specifically, the grooves 31 are provided to reduce the lateral stress on the flat cable when it is bent on the reel during the cable winding process, thereby preventing the flat cable on the reel from breaking, thereby further extending the service life of the cable.

[0027] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A high-strength medium-voltage reel flat cable, comprising a control core and three power cores, wherein the control core and the three power cores are arranged side by side and equidistantly, and the control core and the three power cores are extruded with a flat outer sheath layer, characterized in that: Each power core includes a power cable core, a first conductor shielding layer, a first insulation layer, a first insulation shielding layer, a first metal braided shielding layer and a first braided reinforcement layer which are concentrically arranged from the inside to the outside, and the power cable core is formed by twisting a plurality of power core conductors; the control core includes a control cable core, a second insulation layer, a second insulation shielding layer, a second metal braided shielding layer and a second braided reinforcement layer which are concentrically arranged from the inside to the outside, and the control cable core includes a plurality of control core units distributed in a circular array, a steel wire reinforcement unit is arranged between every two adjacent control core units and the second insulation layer, the steel wire reinforcement unit and the control core unit are twisted to form a control cable core, the steel wire reinforcement unit includes a soft steel wire, a steel wire protective layer is extruded on the outside of the soft steel wire, and the control core unit includes a control core conductor, and a second conductor shielding layer is extruded on the outside of the control core conductor.

2. A high-strength medium-voltage reel flat cable according to claim 1, characterized in that: The power line core conductor and the control line core conductor are both tinned copper conductors.

3. A high-strength medium-voltage reel flat cable according to claim 1, characterized in that: The first insulating layer and the second insulating layer are both made of composite elastomer material.

4. A high-strength medium-voltage reel flat cable according to claim 1, characterized in that: The first conductor shielding layer and the second conductor shielding layer are both made of semi-conductive material.

5. A high-strength medium-voltage reel flat cable according to claim 1, characterized in that: The first metal braided shielding layer and the second metal braided shielding layer are both braided from tinned copper wires.

6. A high-strength medium-voltage reel flat cable according to claim 1, characterized in that: The outer sheath layer is made of thermoplastic polyurethane elastomer rubber.

7. A high-strength medium-voltage reel flat cable according to claim 1, characterized in that: The first braided reinforcement layer and the second braided reinforcement layer are both polyester braided reinforcement layers.

8. The high-strength medium-voltage reel flat cable according to claim 1, characterized in that: The soft steel wire is formed by regularly twisting multiple strands of fine soft steel wires, and the steel wire protective layer is an environmentally friendly polyvinyl chloride elastomer sheath material layer.

9. The high-strength medium-voltage reel flat cable according to claim 1, characterized in that: A plurality of grooves are provided on the top surface and the bottom surface of the outer sheath layer, and horizontally penetrate the outer sheath layer. The grooves are arranged parallel to the axial line of the outer sheath layer.

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