Composite high-temperature-resistant cable
By designing structures such as metal foil layer, heat-insulating hollow layer, convex ring, fire-extinguishing dry powder, elastic spiral ring and wear-resistant convex strip in the cable, the safety hazards of the cable during high temperature, fire and bending are solved, and multiple weights are achieved Protection improves the high temperature, fire and extrusion resistance of the cable.
Patent Information
- Application Number
- CN202420553596.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-21
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-03-21
AI Technical Summary
Existing cables affect the internal cable core at high temperature or misfire, and are prone to breaking when bent or extruded, affecting the safety of use.
A composite high-temperature resistant cable is designed, including an outer cover, a metal foil layer, an anti-extrusion layer, a heat-insulating hollow layer, a convex ring, a fire-extinguishing dry powder, an elastic spiral ring, an inner ring, a wear-resistant convex strip and a buffer groove. These structures enable multiple protections for high temperatures, fires and squeezes.
It effectively improves the fire resistance, high temperature resistance, extrusion resistance and wear resistance of the cable, avoids damage and breakage of the cable during high temperature, fire and bending, and ensures the safety and service life of the cable.
Smart Images
Figure CN222260598U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a composite high temperature resistant cable, belonging to the technical field of power cables. Background Art
[0002] A cable is a device for transmitting electrical energy or signals. It is usually a rope-like cable made up of several or several groups of wires twisted together. Each group of wires is insulated from each other and often twisted around a center wire. The entire outside is covered with a highly insulating covering. The cable has the characteristics of being powered inside and insulated outside.
[0003] During the use of existing cables, the cables are wrapped as a whole in layers, which may affect the internal cable core when the cable is exposed to high temperature or fire, posing certain safety hazards. In addition, when the cables are in use, the cables are tightly fitted in layers, which may easily cause the outer layer to break when bent or squeezed, and the cables may be easily worn when pulled during laying and installation, which may affect the safety of the cables. Utility Model Content
[0004] The purpose of the utility model is to provide a composite high temperature resistant cable to solve the problems raised in the above background technology.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A composite high-temperature resistant cable comprises an outer covering and a cable core, wherein a metal foil layer is arranged on the inner side of the outer covering, an anti-extrusion layer is arranged on the inner side of the metal foil layer, a heat-insulating hollow layer is arranged on the inner side of the anti-extrusion layer, a cable core is coated inside the heat-insulating hollow layer, a convex ring is fixedly connected to the outer side of the outer covering, and a fire-extinguishing dry powder is arranged inside the convex ring.
[0007] Furthermore, a heat-insulating groove is provided inside the heat-insulating hollow layer.
[0008] Furthermore, an elastic spiral ring is provided on the outer side of the anti-extrusion layer, and the elastic spiral ring is made of a high-toughness alloy material.
[0009] Furthermore, an inner ring is fixedly connected to the middle position inside the convex ring, and an elastic metal ring is fixedly connected to the inside of the inner ring.
[0010] Furthermore, a wear-resistant convex strip is fixedly connected to the outer side surface of the convex ring, and a filling groove is provided inside the convex ring.
[0011] Furthermore, outer buffer grooves are provided between the outer covering layer and the convex strips, and the outer buffer grooves are arranged at equal intervals.
[0012] Furthermore, an inner buffer groove is provided on the outer side surface of the anti-extrusion layer, and the inner buffer groove is arranged in a spiral shape.
[0013] The beneficial effects of the utility model are:
[0014] The utility model can perform heat insulation treatment on external high temperature by providing a heat-insulating hollow layer and a heat-insulating groove, thereby improving the high-temperature protection effect on the cable core, and can avoid damage to the internal cable core in the event of a fire by providing a metal foil layer. At the same time, in the event of an open flame, the provided convex ring is burned and damaged by the fire, so that the fire extinguishing dry powder provided inside can be sprayed out, and then the open flame can be extinguished, thereby improving the fire resistance and high-temperature resistance of the cable. The utility model can perform anti-extrusion protection treatment on the cable by utilizing the provided elastic spiral ring and the elastic metal ring, and can perform anti-extrusion force protection treatment during the bending process by providing an outer buffer groove and an inner buffer groove, thereby avoiding the cable from being squeezed, bent and broken. At the same time, the outer layer of the cable can be protected by the provided wear-resistant convex strips, thereby improving the wear resistance of the cable. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the specific embodiments of the present invention and do not constitute a limitation to the present invention.
[0016] Figure 1 This is a front view of a composite high temperature resistant cable of the utility model;
[0017] Figure 2 This is a cross-sectional view of the installation structure of a convex ring of a composite high-temperature resistant cable of the utility model;
[0018] Figure 3 This is a cross-sectional view of the installation structure of a heat-insulating hollow layer of a composite high-temperature resistant cable of the utility model;
[0019] Numbers in the figure: 1. Outer covering layer; 2. Metal foil layer; 3. Anti-extrusion layer; 4. Heat-insulating hollow layer; 5. Cable core; 6. Convex ring; 7. Fire-extinguishing dry powder; 8. Heat-insulating groove; 9. Elastic spiral ring; 10. Inner ring; 11. Elastic metal ring; 12. Wear-resistant convex strip; 13. Filling groove; 14. Outer buffer groove; 15. Inner buffer groove. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] Example 1 Please refer to Figure 1-Figure 3 , the utility model provides a technical solution:
[0022] A composite high-temperature resistant cable comprises an outer covering 1 and a cable core 5, wherein a metal foil layer 2 is provided on the inner side of the outer covering 1, an anti-extrusion layer 3 is provided on the inner side of the metal foil layer 2, a heat-insulating hollow layer 4 is provided on the inner side of the anti-extrusion layer 3, a cable core 5 is coated inside the heat-insulating hollow layer 4, a convex ring 6 is fixedly connected to the outer side of the outer covering 1, a fire-extinguishing dry powder 7 is provided inside the convex ring 6, and a heat-insulating groove 8 is provided inside the heat-insulating hollow layer 4. When the cable is used, the heat-insulating hollow layer 4 and the heat-insulating groove 8 can be used to insulate the external high temperature, thereby improving the high-temperature protection effect of the cable core 5, and the metal foil layer 2 can be used to avoid damage to the internal cable core 5 in the event of a fire. At the same time, in the event of an open flame, the convex ring 6 is burned and damaged by the fire, so that the fire-extinguishing dry powder 7 provided inside can be sprayed out, thereby extinguishing the open flame, thereby improving the fire resistance and high-temperature resistance of the cable.
[0023] Example 2 Please refer to Figure 2 and Figure 3 The difference between this embodiment and embodiment 1 is that: an elastic spiral ring 9 is provided on the outer side of the anti-extrusion layer 3, and the elastic spiral ring 9 is set to a high-toughness alloy material. An inner ring 10 is fixedly connected to the middle position inside the convex ring 6, and an elastic metal ring 11 is fixedly connected to the inner ring 10. A wear-resistant convex strip 12 is fixedly connected to the outer side of the convex ring 6, and a filling groove 13 is provided inside the convex ring 6. An outer buffer groove 14 is provided between the outer covering layer 1 and the convex strip, and the outer buffer grooves 14 are arranged at equal intervals. An inner buffer groove 15 is provided on the outer side of the anti-extrusion layer 3, and the inner buffer groove 15 is arranged in a spiral shape. The cable can be protected from extrusion by the action of the elastic spiral ring 9 and the elastic metal ring 11, and the anti-extrusion force protection can be performed during the bending process by the action of the outer buffer groove 14 and the inner buffer groove 15, so as to avoid the cable from being squeezed, bent and broken. At the same time, the outer layer of the cable can be protected by the action of the wear-resistant convex strip 12, thereby improving the wear resistance of the cable.
[0024] Working principle of the utility model: when in use, the device supplies power to the cable through an external power supply. When using this cable, the heat-insulating hollow layer 4 and the heat-insulating groove 8 can be used to insulate the external high temperature, thereby improving the high-temperature protection of the cable core 5. The metal foil layer 2 can avoid damage to the internal cable core 5 in the event of a fire. At the same time, in the event of an open flame, the convex ring 6 is burned and damaged by the fire, so that the fire-extinguishing dry powder 7 set inside can be sprayed out, and then the open flame can be extinguished, thereby improving the fire resistance and high-temperature resistance of the cable. The elastic spiral ring 9 and the elastic metal ring 11 can be used to protect the cable from extrusion, and the outer buffer groove 14 and the inner buffer groove 15 can be used to protect the cable from extrusion force during the bending process, thereby avoiding the cable from being squeezed, bent and broken. At the same time, the wear-resistant convex strip 12 can be used to protect the outer layer of the cable, thereby improving the wear resistance of the cable.
[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A composite high temperature resistant cable, comprising an outer covering layer (1) and a cable core (5), characterized in that: A metal foil layer (2) is provided on the inner side of the outer covering layer (1), an anti-extrusion layer (3) is provided on the inner side of the metal foil layer (2), a heat-insulating hollow layer (4) is provided on the inner side of the anti-extrusion layer (3), a cable core (5) is coated inside the heat-insulating hollow layer (4), a convex ring (6) is fixedly connected to the outer side of the outer covering layer (1), and a fire-extinguishing dry powder (7) is provided inside the convex ring (6).
2. A composite high temperature resistant cable according to claim 1, characterized in that: A heat-insulating groove (8) is provided inside the heat-insulating hollow layer (4).
3. A composite high temperature resistant cable according to claim 1, characterized in that: An elastic spiral ring (9) is provided on the outer side of the anti-extrusion layer (3), and the elastic spiral ring (9) is made of a high-toughness alloy material.
4. A composite high temperature resistant cable according to claim 1, characterized in that: An inner ring (10) is fixedly connected to the middle position inside the convex ring (6), and an elastic metal ring (11) is fixedly connected to the inside of the inner ring (10).
5. The composite high temperature resistant cable according to claim 1, characterized in that: A wear-resistant convex strip (12) is fixedly connected to the outer side surface of the convex ring (6), and a filling groove (13) is provided inside the convex ring (6).
6. A composite high temperature resistant cable according to claim 1, characterized in that: Outer layer buffer grooves (14) are provided between the outer covering layer (1) and the convex strips, and the outer layer buffer grooves (14) are arranged at equal intervals.
7. A composite high temperature resistant cable according to claim 1, characterized in that: An inner layer buffer groove (15) is provided on the outer side surface of the anti-extrusion layer (3), and the inner layer buffer groove (15) is arranged in a spiral shape.