Composite medium and low voltage cable
By introducing a water-blocking sheath and an outer shielding layer into the optical fiber cable, the problems of the single function and fragility of the optical fiber cable are solved, and stable protection of the optical fiber and conductor is achieved, thereby improving service life and safety.
Patent Information
- Application Number
- CN202423095716.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-12-16
AI Technical Summary
Existing fiber optic cables have limited functionality, lack power transmission capabilities, and the fibers are fragile and have poor insulation, resulting in insufficient service life and stability.
A composite medium-low voltage cable was designed, comprising optical fiber cores and conductor cores, both housed within a water-blocking sheath. The water-blocking sheath consists of a tubular body, a core, and connecting ribs, forming a containment area to protect the optical fiber and conductor. The outer shielding layer is woven from copper wire or tinned copper wire, and water-blocking filling ropes fill the containment area to improve flexibility and positional stability.
It improves the water-blocking protection of the fiber optic core and conductor core, enhancing the overall service life and safety and stability during use.
Smart Images
Figure CN223665198U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a composite medium and low voltage cable, belonging to the field of cable technology. Background Technology
[0002] Fiber optic cable is a type of communication cable composed of two or more glass or plastic optical fiber cores. These cores are housed within a protective cladding and covered by an outer PVC sheath. Signal transmission along the internal fibers typically uses infrared light. Currently, fiber optic cables still have several drawbacks in practical applications. For example, their function is relatively limited; they lack power transmission capabilities, possessing only fiber optic communication capabilities. Furthermore, the fibers are fragile and have poor insulation. Composite medium- and low-voltage cables integrate communication and power functions, effectively enabling the convergence of multiple networks such as telecommunications and power transmission networks. However, the vulnerability of the optical fibers remains a concern. Summary of the Invention
[0003] The technical problem to be solved by this utility model is to provide a composite medium and low voltage cable that can provide good water-blocking protection for the optical fiber core and the conductor core and maintain the stability of the position of the optical fiber core and the conductor core during long-term use, thereby improving the overall service life and safety and stability during use.
[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a composite medium and low voltage cable, comprising: at least one optical fiber core, at least two conductor cores, an outer shielding layer and a sheath layer. The optical fiber core and conductor cores are both disposed within a water-blocking sheath. The water-blocking sheath located inside the outer shielding layer comprises: a tubular body, a core body disposed at the center of the tubular body and extending along the axial direction of the tubular body, and a plurality of connecting rib groups spaced apart along the axial direction. Each connecting rib group has at least two connecting ribs spaced apart circumferentially. Each connecting rib is radially connected between the inner wall of the tubular body and the tubular body, thereby forming an accommodating area between any two circumferentially adjacent connecting ribs. Each accommodating area is provided with one optical fiber core or conductor core.
[0005] The following are further improvements to the above technical solution:
[0006] 1. In the above scheme, the optical fiber core includes an optical fiber core and a first insulating layer covering the outside of the optical fiber core.
[0007] 3. In the above scheme, the conductor core includes: multiple strands of copper wire twisted together, an inner shielding layer disposed on the outside of the copper wire, and a second insulating layer covering the outside of the inner shielding layer.
[0008] 4. In the above scheme, the outer shielding layer is woven from copper wire or tin-plated copper wire, or the outer shielding layer is formed by wrapping aluminum-plastic composite tape around the outside of the tubular body of the water-blocking sheath.
[0009] 5. In the above scheme, the tubular body, core and connecting rib of the water-blocking sheath are integrally formed structures obtained by extrusion.
[0010] 6. In the above scheme, a water-blocking filling rope is provided in each of the accommodating areas and on the outside of the optical fiber core or conductor core.
[0011] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:
[0012] This utility model relates to a composite medium-low voltage cable, in which both the optical fiber core and the conductor core are housed within a water-blocking sheath. The water-blocking sheath, located inside the outer shielding layer, comprises: a tubular body, a core located at the center of the tubular body and extending axially along the tubular body, and several axially spaced connecting rib groups. Each connecting rib group has at least two circumferentially spaced connecting ribs, and each connecting rib is radially connected between the inner wall of the tubular body and the tubular body, thereby forming a receiving area between any two circumferentially adjacent connecting ribs. Each receiving area contains one optical fiber core or conductor core. This design improves overall flexibility and torsion resistance while providing excellent water-blocking protection for the optical fiber core and conductor core, maintaining the stability of their positions during long-term use, thus improving the overall service life and safety and stability during use. Attached Figure Description
[0013] Appendix Figure 1 This is a schematic diagram of the structure of Example 1 of the composite medium and low voltage cable of this utility model;
[0014] Appendix Figure 2 This is a schematic diagram of the structure of Example 2 of the composite medium and low voltage cable of this utility model;
[0015] Appendix Figure 3 This is a schematic diagram of the conductor core in the composite medium and low voltage cable of this utility model.
[0016] In the above attached diagram: 1. Optical fiber core; 11. Optical fiber core; 12. First insulation layer; 2. Conductor core; 21. Copper conductor; 22. Inner shielding layer; 23. Second insulation layer; 3. Water-blocking sheath; 31. Tubular body; 32. Core; 33. Connecting rib; 4. Outer shielding layer; 5. Sheath layer; 6. Receptacle area; 7. Water-blocking filler rope. Detailed Implementation
[0017] The present patent can be further understood through the specific embodiments given below, but they are not intended to limit the present patent.
[0018] Example 1: A composite medium-low voltage cable includes: 3 optical fiber cores 1, 3 conductor cores 2, an outer shielding layer 4, and a sheath layer 5. The optical fiber cores 1 and conductor cores 2 are both disposed within a water-blocking sheath 3. The water-blocking sheath 3, located inside the outer shielding layer 4, includes: a tubular body 31, a core 32 disposed at the center of the tubular body 31 and extending along the axial direction of the tubular body 31, and several axially spaced connecting rib groups. Each connecting rib group has 6 circumferentially spaced connecting ribs 33. Each connecting rib 33 is radially connected between the inner wall of the tubular body 31 and the tubular body 31, thereby forming a receiving area 6 between any two circumferentially adjacent connecting ribs 33. Each receiving area 6 contains one optical fiber core 1 or conductor core 2.
[0019] The aforementioned conductor core 2 includes: multiple strands of intertwined copper wire 21, an inner shielding layer 22 disposed outside the copper wire 21, and a second insulating layer 23 covering the outer side of the inner shielding layer 22.
[0020] The outer shielding layer 4 mentioned above is made of copper wire.
[0021] Example 2: A composite medium-low voltage cable includes: 2 optical fiber cores 1, 5 conductor cores 2, an outer shielding layer 4, and a sheath layer 5. The optical fiber cores 1 and conductor cores 2 are both disposed within a water-blocking sheath 3. The water-blocking sheath 3, located inside the outer shielding layer 4, includes: a tubular body 31, a core 32 disposed at the center of the tubular body 31 and extending along the axial direction of the tubular body 31, and a plurality of axially spaced connecting rib groups. Each connecting rib group has at least 5 circumferentially spaced connecting ribs 33. Each connecting rib 33 is radially connected between the inner wall of the tubular body 31 and the tubular body 31, thereby forming a receiving area 6 between any two circumferentially adjacent connecting ribs 33. Each receiving area 6 contains one optical fiber core 1 or conductor core 2.
[0022] The aforementioned optical fiber core 1 includes an optical fiber core 11 and a first insulating layer 12 covering the outside of the optical fiber core 11.
[0023] The aforementioned conductor core 2 includes: multiple strands of intertwined copper wire 21, an inner shielding layer 22 disposed outside the copper wire 21, and a second insulating layer 23 covering the outer side of the inner shielding layer 22.
[0024] The outer shielding layer 4 mentioned above is woven from tin-plated copper wire.
[0025] The tubular body 31, core 32 and connecting rib 33 of the above-mentioned water-blocking sheath 3 are integrally formed structures obtained by extrusion.
[0026] Each of the accommodating areas 6 is provided with a water-blocking filling rope 7 located outside the optical fiber core 1 or conductor core 2.
[0027] The aforementioned composite medium and low voltage cable not only improves overall flexibility and torsion resistance, but also provides good water-blocking protection for the fiber optic core and conductor core, and maintains the stability of the fiber optic core and conductor core position during long-term use, thereby improving the overall service life and safety and stability during use.
[0028] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.
Claims
1. A composite medium- and low-voltage cable, comprising: The product comprises at least one optical fiber core (1), at least two conductor cores (2), an outer shielding layer (4), and a sheath layer (5), characterized in that: the optical fiber core (1) and the conductor core (2) are both disposed within a water-blocking sheath (3), and the water-blocking sheath (3) located inside the outer shielding layer (4) comprises: a tubular body (31), a core (32) disposed at the center of the tubular body (31) and extending along the axial direction of the tubular body (31), and a plurality of connecting rib groups spaced apart along the axial direction, each of the connecting rib groups having at least two connecting ribs (33) spaced apart along the circumferential direction, each of the connecting ribs (33) being radially connected between the inner wall of the tubular body (31) and the tubular body (31), thereby forming a receiving area (6) between any two connecting ribs (33) arranged adjacently in the circumferential direction, and each receiving area (6) being provided with one optical fiber core (1) or conductor core (2).
2. The composite medium and low voltage cable according to claim 1, characterized in that: The optical fiber core (1) includes an optical fiber core (11) and a first insulating layer (12) covering the outside of the optical fiber core (11).
3. The composite medium and low voltage cable according to claim 1, characterized in that: The conductor core (2) includes: multiple strands of intertwined copper wire (21), an inner shielding layer (22) disposed outside the copper wire (21), and a second insulation layer (23) covering the outer side of the inner shielding layer (22).
4. The composite medium and low voltage cable according to claim 1, characterized in that: The outer shielding layer (4) is woven from copper wire or tin-plated copper wire, or the outer shielding layer (4) is formed by wrapping an aluminum-plastic composite tape around the outside of the tubular body (31) of the water-blocking sheath (3).
5. The composite medium and low voltage cable according to claim 1, characterized in that: The tubular body (31), core (32) and connecting rib (33) of the water-blocking sheath (3) are integrally formed structures obtained by extrusion.
6. The composite medium and low voltage cable according to claim 1, characterized in that: Each of the aforementioned accommodating areas (6) is provided with a water-blocking filling rope (7) located outside the optical fiber core (1) or conductor core (2).