Cable with high pressure resistance
By using PVC reinforcing tape and a flexible clip structure in the cable, the problems of outer sheath dent and insulation layer misalignment caused by pressure during underground cable laying are solved, achieving high pressure resistance and lightweight design of the cable.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 安徽长鹿特种电缆有限公司
- Filing Date
- 2025-06-03
- Publication Date
- 2026-05-08
AI Technical Summary
In existing underground cable installation scenarios, especially in areas with uneven foundation settlement and narrow spaces, the outer sheath is prone to sinking and the insulation layer may be misaligned due to soil pressure and squeezing force. In severe cases, conductor deformation and breakage may occur.
The cable is reinforced with a first and second PVC material embedded in a PVC sheath. The reinforcement layer is formed by stacking and reciprocating the assembly. The cable's strength and rigidity are enhanced by the use of a plastic butt buckle and slot structure. At the same time, the weight is reduced by reducing the amount of material used by reducing the slot.
It improves the cable's compressive strength, enhances its strength and rigidity, reduces weight, effectively prevents outer sheath dents and insulation layer misalignment, and avoids conductor breakage.
Smart Images
Figure CN224217274U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of cable technology, specifically relating to a cable with strong compressive strength. Background Technology
[0002] A cable is a linear or strip-shaped electrical device used to transmit electrical energy, electrical signals, or optical signals. It typically consists of one or more mutually insulated conductors, encased in an insulating layer, a shielding layer, and a protective sheath to achieve safe and reliable transmission. Cables are widely used in power systems, such as power plants, substations, transmission lines, and distribution lines.
[0003] As the core carrier of electrical energy and signal transmission, cables have a multi-layered composite structure, usually consisting of a conductor, insulation layer, shielding layer and sheath. Although this multi-layered structure can effectively ensure transmission performance, the cable surface is often subjected to significant pressure in complex application scenarios, leading to frequent deformation problems.
[0004] In underground installations, cables must withstand the pressure of the soil cover and the squeezing force generated by foundation settlement. If the foundation settles unevenly, the local pressure can even double. In narrow spaces such as tunnels and cable trenches, the dense arrangement of cables causes mutual compression. Long-term stress can easily lead to the outer sheath denting, insulation layer misalignment, and in severe cases, even conductor deformation and breakage. Utility Model Content
[0005] The purpose of this invention is to provide a cable with strong compressive strength, aiming to solve the problems of existing cables in underground laying scenarios where the cables must withstand the pressure of the soil cover and the squeezing force generated by foundation settlement. If the foundation settlement is uneven, the local pressure can even double. In narrow spaces such as tunnels and cable trenches, the dense arrangement of cables leads to mutual compression, and long-term stress can easily cause the outer sheath to dent, the insulation layer to misalign, and in severe cases, even conductor deformation and breakage.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a cable with strong compressive strength, comprising a polyvinyl chloride sheath and a steel tape armored protective layer wound on the surface of the polyvinyl chloride sheath, wherein a filling layer is connected inside the steel tape armored protective layer, a cross-linked polyethylene insulation layer is connected inside the filling layer, and a copper core is connected inside the cross-linked polyethylene insulation layer.
[0007] The polyvinyl chloride sheath is internally embedded with a first reinforcing band, and both ends of the first reinforcing band are connected to a second reinforcing band. The same-direction ends of the first and second reinforcing bands are connected to a mating buckle. The end of the first reinforcing band near the mating buckle is provided with a slot, and the same-direction ends of the first and second reinforcing bands are provided with a lightening groove.
[0008] As a preferred embodiment of the present invention for a cable with high compressive strength, both the first reinforcing strip and the second reinforcing strip are made of PVC material, and the first reinforcing strip and the second reinforcing strip are connected by stacking.
[0009] As a preferred embodiment of the present invention for a cable with high compressive strength, the connecting buckle is made of malleable plastic material, and the connecting buckle and the slot form an engaging structure.
[0010] As a preferred embodiment of the present invention for a cable with high compressive strength, four docking clips are provided, and the four docking clips are distributed in four equal parts about the center of the first reinforcing strip. The docking clips have an L-shaped structure when viewed from the side.
[0011] As a preferred embodiment of the present invention for a cable with high compressive strength, the cross-section of the pressure-reducing groove is hexagonal.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] This invention improves the strength and hardness of the cable itself and enhances its compressive strength by stacking and reciprocating a first and a second PVC reinforcing strip inside the PVC sheath during the manufacturing process of cables that need to be installed underground. At this time, the reinforcing layer formed by the first and second reinforcing strips wraps around the surface of the steel tape armor protective layer, thereby improving the cable's compressive strength and hardness. Attached Figure Description
[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0015] Figure 1 This is a schematic diagram of the overall cable structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the reinforcement strip assembly structure of this utility model;
[0017] Figure 3 This is an exploded structural diagram of the reinforcing strip of this utility model;
[0018] Figure 4 This is a schematic diagram of the weight-reducing groove structure of this utility model.
[0019] In the diagram: 1. Polyvinyl chloride sheath; 2. Steel strip armored protective layer; 3. Filler layer; 4. Cross-linked polyethylene insulation layer; 5. Copper core; 11. First reinforcing strip; 12. Second reinforcing strip; 13. Butt buckle; 14. Slot; 15. Lightening slot. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Please see Figure 1-4 The present invention provides the following technical solution: a cable with strong pressure resistance, including a polyvinyl chloride sheath 1 and a steel tape armored protective layer 2 wrapped around the surface of the polyvinyl chloride sheath 1. The steel tape armored protective layer 2 is internally connected to a filler layer 3, the filler layer 3 is internally connected to a cross-linked polyethylene insulation layer 4, and the cross-linked polyethylene insulation layer 4 is internally connected to a copper core 5.
[0022] The polyvinyl chloride sheath 1 is internally embedded with a first reinforcing band 11. Both ends of the first reinforcing band 11 are connected to a second reinforcing band 12. The same-direction ends of the first reinforcing band 11 and the second reinforcing band 12 are connected to a mating buckle 13. A slot 14 is provided at the end of the first reinforcing band 11 near the mating buckle 13. A lightening groove 15 is provided at the same-direction ends of the first reinforcing band 11 and the second reinforcing band 12.
[0023] Preferably, the first reinforcing strip 11 and the second reinforcing strip 12 are both made of PVC, and the first reinforcing strip 11 and the second reinforcing strip 12 are connected by stacking.
[0024] In practical use, the reinforcement layer consisting of the first reinforcement strip 11 and the second reinforcement strip 12 is wrapped around the surface of the steel strip armor protective layer 2 to improve the strength and hardness of the cable itself and enhance its compressive strength.
[0025] Preferably, the mating buckle 13 is made of malleable plastic material, and the mating buckle 13 and the slot 14 form a snap-fit structure.
[0026] Preferably, there are four docking buckles 13, which are distributed in four equal parts about the center of the first reinforcing band 11, and the docking buckles 13 have an L-shaped structure when viewed from the side.
[0027] In practical use, by fitting the docking buckle 13 into the slot 14, it is convenient to stack and reciprocate the first reinforcing band 11 and the second reinforcing band 12, and at the same time, it is convenient to install the first reinforcing band 11 and the second reinforcing band 12 stably.
[0028] Preferably, the cross-section of the light-reducing groove 15 is hexagonal.
[0029] In practical use, by reducing the use of the groove 15, the material used for the first reinforcing strip 11 and the second reinforcing strip 12 is reduced, and the weight of the cable itself is reduced, avoiding additional weight to the cable.
[0030] The working principle of this utility model is as follows: During the manufacturing process of the cable to be installed underground, the first reinforcing strip 11 and the second reinforcing strip 12 made of PVC material are stacked and reciprocated inside the PVC sheath 1. At this time, the docking buckle 13 and the slot 14 are locked and stabilized. The reinforcing layer composed of the first reinforcing strip 11 and the second reinforcing strip 12 is wrapped around the surface of the steel tape armor protective layer 2, which improves the strength and hardness of the cable itself and enhances the compressive strength. At the same time, the weight-reducing groove 15 reduces the material used in the reinforcing layer itself, and the hexagonal cross section can ensure the hardness and strength of the reinforcing layer itself, ensuring compressive strength while reducing the weight of the cable.
[0031] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A high-pressure-resistant cable, comprising a polyvinyl chloride sheath (1) and a steel tape armored protective layer (2) wound around the surface of the polyvinyl chloride sheath (1), characterized in that: The steel strip armored protective layer (2) is internally connected to a filling layer (3), the filling layer (3) is internally connected to a cross-linked polyethylene insulation layer (4), and the cross-linked polyethylene insulation layer (4) is internally connected to a copper core (5). The polyvinyl chloride sheath (1) is internally embedded with a first reinforcing band (11), and both ends of the first reinforcing band (11) are connected to a second reinforcing band (12). The same-direction ends of the first reinforcing band (11) and the second reinforcing band (12) are connected to a butt buckle (13). A slot (14) is provided at the end of the first reinforcing band (11) near the butt buckle (13), and a lightening groove (15) is provided at the same-direction ends of the first reinforcing band (11) and the second reinforcing band (12).
2. The cable with high compressive strength according to claim 1, characterized in that: The first reinforcing strip (11) and the second reinforcing strip (12) are both made of PVC material, and the first reinforcing strip (11) and the second reinforcing strip (12) are connected by stacking.
3. The cable with high compressive strength according to claim 1, characterized in that: The docking buckle (13) is made of malleable plastic material, and the docking buckle (13) and the slot (14) form a locking structure.
4. The cable with high compressive strength according to claim 1, characterized in that: There are four docking buckles (13), and the four docking buckles (13) are distributed in four equal parts about the center of the first reinforcing band (11). The docking buckles (13) have an L-shaped structure when viewed from the side.
5. A high-pressure-resistant cable according to claim 1, characterized in that: The cross-section of the lightening groove (15) is hexagonal.