Mineral substance fireproof cable for tightly pressing conductor
By adopting a multi-layer structure and annular conductive mechanism design in the compacted cable, the high temperature and fire resistance of the cable are enhanced, and the flammability problem of traditional cables in high temperature environments is solved, ensuring the stability and safety of power transmission.
Patent Information
- Application Number
- CN202422163988.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-03
AI Technical Summary
Traditional pressurized cables lack high temperature resistance and fire resistance, and are prone to ignition in high temperature environments, resulting in leakage and fire.
It adopts a multi-layer structural design, including an outer sheath, corrugated copper sheath, glass fiber wrap, oxygen insulation layer and fill layer. It is equipped with an annularly distributed conductive mechanism inside, which is protected by a mica insulation layer and a crosslinked insulation layer, enhancing the high temperature and fire resistance of the cable.
It improves the high temperature and fire resistance of the cable, reduces the occurrence of accidents, and ensures the stability and safety of power transmission.
Smart Images
Figure CN223092600U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a cable, in particular to a mineral fire-proof cable with a compacted conductor, belonging to the technical field of cables. Background Art
[0002] A cable is a device for transmitting electric energy or signals, usually composed of several or several groups of wires. With the development of the manufacturing industry, the types of cables are also various, and the cables used in different fields are different. Cables play an important role in the process of power transmission.
[0003] However, the traditional compacted cable lacks good high-temperature resistance and fire-proof performance inside. When an accident occurs, the cable is easily affected by high temperature and ignited, resulting in electric leakage and fire, causing damage to the surrounding area. Content of the Utility Model
[0004] The purpose of the utility model is to provide a mineral fire-proof cable with a compacted conductor to solve the above problems, which can have good high-temperature resistance and fire-proof performance, enable the cable to continue to work in a high-temperature environment, and reduce the occurrence of accidents.
[0005] The utility model realizes the above purpose through the following technical solutions. A mineral fire-proof cable with a compacted conductor includes an outer sheath. A corrugated copper sheath is adhesively connected to the inner side of the outer sheath. A glass fiber tape is connected to the inner wall of the corrugated copper sheath. An oxygen isolation layer is arranged between the glass fiber tape and the corrugated copper sheath. A filling layer is arranged inside the glass fiber tape. Five conductive mechanisms are arranged inside the filling layer in a circular distribution.
[0006] Preferably, the conductive mechanism includes a central conductor. A plurality of third sector conductors are arranged in a circular distribution outside the central conductor. A plurality of second sector conductors are arranged in a circular distribution outside the plurality of third sector conductors arranged in a circular distribution. A plurality of first sector conductors are arranged in a circular distribution outside the plurality of second sector conductors arranged in a circular distribution.
[0007] Preferably, a mica insulation layer is wrapped outside the plurality of first sector conductors arranged in a circular distribution. A crosslinked insulation layer is wrapped outside the mica insulation layer.
[0008] Preferably, a marking strip is arranged inside the four insulation layers. The cross-section of the marking strip is a trapezoidal structure.
[0009] Preferably, the glass fiber tape, the corrugated copper sheath and the outer sheath are all cylindrical structures. The outer side of the corrugated copper sheath is closely attached to the inner side of the outer sheath.
[0010] Preferably, the central conductor is a cylindrical structure. The cross-sections of the first sector conductor, the second sector conductor and the third sector conductor are all sector structures.
[0011] Preferably, the outer periphery of the third sector-shaped ring conductor is closely attached to the inner side of the second sector-shaped ring conductor, and the outer periphery of the second sector-shaped ring conductor is closely attached to the inner side of the first sector-shaped ring conductor.
[0012] Preferably, the central angle range of the third sector-shaped ring conductor is 60°-120°, and the length ratio range of the short arc to the long arc is 1:2.4-1:3.
[0013] The central angle range of the second sector-shaped ring conductor is 30°-36°, and the length ratio range of the short arc to the long arc is 1:1.4-1.2.
[0014] Preferably, the central angle range of the first sector-shaped ring conductor is 20°-24°, and the length ratio range of the short arc to the long arc is 1:1.2-1:1.6.
[0015] The beneficial effects of the present utility model are as follows: Through the installation of the conductive mechanism, it is beneficial to carry out the power transmission work. And by installing a plurality of conductive mechanisms distributed in a ring shape inside the filling layer, the conductive effect is better, the power transmission load capacity is increased. By sequentially wrapping a fiberglass tape, an oxygen isolation layer, a corrugated copper sheath and an outer sheath outside the filling layer, the safety protection of the plurality of internal conductive mechanisms is realized, making the cable have good fire resistance. Brief Description of the Drawings
[0016] Figure 1 It is a schematic diagram of the overall structure of the present utility model;
[0017] Figure 2 It is a schematic diagram of the connection structure of the corrugated copper sheath and the outer sheath of the present utility model;
[0018] Figure 3 It is a schematic diagram of the connection structure of the cross-linked insulation layer and the mica insulation layer of the present utility model;
[0019] Figure 4 It is a schematic diagram of the structure of the third sector-shaped ring conductor of the present utility model;
[0020] Figure 5 It is a schematic diagram of the structure of the second sector-shaped ring conductor of the present utility model;
[0021] Figure 6 It is a schematic diagram of the structure of the first sector-shaped ring conductor of the present utility model.
[0022] In the figure: 1. Outer sheath; 2. Corrugated copper sheath; 3. Oxygen isolation layer; 4. Fiberglass tape; 5. Filling layer; 6. Conductive mechanism; 61. Central conductor; 62. First sector-shaped ring conductor; 63. Second sector-shaped ring conductor; 64. Third sector-shaped ring conductor; 65. Mica insulation layer; 66. Marking strip; 7. Cross-linked insulation layer. Detailed implementation mode
[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0024] Please refer to Figures 1-6 As shown, a mineral fire-resistant cable for tightly pressing a conductor includes an outer sheath 1. A corrugated copper sheath 2 is adhesively connected to the inner side of the outer sheath 1. A glass fiber tape 4 is connected to the inner wall of the corrugated copper sheath 2. An oxygen isolation layer 3 is provided between the glass fiber tape 4 and the corrugated copper sheath 2. A filling layer 5 is provided inside the glass fiber tape 4. Five conductive mechanisms 6 are annularly distributed inside the filling layer 5.
[0025] As a technical optimization scheme of the present utility model, the conductive mechanism 6 includes a central conductor 61. A plurality of third sector conductors 64 are annularly distributed outside the central conductor 61. A plurality of second sector conductors 63 are annularly distributed outside the plurality of annularly distributed third sector conductors 64. A plurality of first sector conductors 62 are annularly distributed outside the plurality of annularly distributed second sector conductors 63. By wrapping the central conductor 61, the first sector conductor 62, the second sector conductor 63, and the third sector conductor 64 around each other, the cable becomes more compact, the gap is reduced, and the power transmission capacity is greater.
[0026] As a technical optimization scheme of the present utility model, a mica insulation layer 65 is wrapped outside the plurality of annularly distributed first sector conductors 62. A crosslinked insulation layer 7 is wrapped outside the mica insulation layer 65. Through the double protection of the mica insulation layer 65 and the crosslinked insulation layer 7, the first sector conductor 62 is tightly wrapped, and good insulation and protection effects are achieved.
[0027] As a technical optimization scheme of the present utility model, a marking strip 66 is provided inside the four insulation layers. The cross section of the marking strip 66 is a trapezoidal structure. By installing the marking strips 66 of different colors, it is beneficial to identify the phase of the conductor, facilitating installation and maintenance.
[0028] As a technical optimization scheme of the present utility model, the glass fiber tape 4, the corrugated copper sheath 2, and the outer sheath 1 are all cylindrical structures. The outer side of the corrugated copper sheath 2 is closely attached to the inner side of the outer sheath 1. Through the installation of the glass fiber tape 4, the corrugated copper sheath 2, and the outer sheath 1, it is beneficial to protect the inside of the cable, playing a role in wear resistance, high temperature resistance, and insulation.
[0029] As a technical optimization solution of the present utility model, the central conductor 61 is of a cylindrical structure, and the cross-sections of the first sector conductor 62, the second sector conductor 63, and the third sector conductor 64 are all of sector structures. The sector ring structure can make the joint surfaces between the conductors more compact, resulting in a higher compression coefficient of the conductors and a more uniform distribution of the conductors.
[0030] As a technical optimization solution of the present utility model, the outer periphery of the third sector conductor 64 is in close fit with the inner side of the second sector conductor 63, and the outer periphery of the second sector conductor 63 is in close fit with the inner side of the first sector conductor 62, which is beneficial for reducing the gaps inside the cable, making the distribution of the conductors regular inside the cable, making the cable structure more compact, saving the laying space, and then increasing the current-carrying capacity of the cable.
[0031] As a technical optimization solution of the present utility model, the central angle range of the third sector conductor 64 is 60° - 120°, and the length ratio range of the short arc to the long arc is 1:2.4 - 1:3, which is beneficial for reducing the number of the third sector conductors 64, so that the multiple third sector conductors 64 can tightly wrap the central conductor 61.
[0032] As a technical optimization solution of the present utility model, the central angle range of the second sector conductor 63 is 30° - 36°, and the length ratio range of the short arc to the long arc is 1:1.4 - 1.2. The central angle range and the length ratio range of the short arc to the long arc of the second sector conductor 63 are small, and the number of conductors increases, enabling the multiple second sector conductors 63 to be closely attached in sequence.
[0033] As a technical optimization solution of the present utility model, the central angle range of the first sector conductor 62 is 20° - 24°, and the length ratio range of the short arc to the long arc is 1:1.2 - 1:1.6. The central angle range and the length ratio range of the short arc to the long arc of the first sector conductor 62 are small, and the number of conductors increases, enabling the multiple first sector conductors 62 to be closely attached in sequence.
[0034] When the utility model is in use, first, conductors of different models are shaped through wire passing holes of different shapes, and the third sector ring conductor 64, the second sector ring conductor 63 and the first sector ring conductor 62 are sequentially stranded and wrapped on the outer surface of the central conductor 61 through equipment, so as to form a compacted conductor. A mica insulating layer 65 is arranged inside multiple cross-linked insulating layers 7, which plays a good insulating role. And through the marking strips 66 on the multiple cross-linked insulating layers 7, it is convenient to identify the conductor phase well, which is beneficial to subsequent installation and maintenance. Then, the first sector ring conductor 62, the second sector ring conductor 63 and the third sector ring conductor 64 wrapped around the central conductor 61 in four groups are annularly distributed inside the filling layer 5. Then, the outside of the filling layer 5 is sequentially wrapped with a glass fiber tape 4, an oxygen isolation layer 3, a corrugated copper sheath 2 and an outer sheath 1 to achieve the safety protection of the internal conductor and make the cable have good fire resistance.
[0035] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.
[0036] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A mineral fire-resistant cable with a compacted conductor, comprising an outer sheath (1), characterized in that: A corrugated copper sheath (2) is adhesively connected to the inner side of the outer sheath (1). A fiberglass tape (4) is connected to the inner wall of the corrugated copper sheath (2). An oxygen barrier layer (3) is provided between the fiberglass tape (4) and the corrugated copper sheath (2). A filling layer (5) is provided inside the fiberglass tape (4). Five electrically conductive mechanisms (6) are provided inside the filling layer (5) and are distributed in a ring shape.
2. The mineral fire-proof cable with a compacted conductor according to claim 1, characterized in that: The electrically conductive mechanism (6) includes a central conductor (61). A plurality of third sector conductors (64) are provided outside the central conductor (61) and are distributed in a ring shape. A plurality of second sector conductors (63) are provided outside the plurality of third sector conductors (64) distributed in a ring shape. A plurality of first sector conductors (62) are provided outside the plurality of second sector conductors (63) distributed in a ring shape.
3. The mineral fire-proof cable with a compacted conductor according to claim 2, characterized in that: A mica insulating layer (65) is wrapped outside the plurality of first sector conductors (62) distributed in a ring shape. A crosslinked insulating layer (7) is wrapped outside the mica insulating layer (65).
4. The mineral fire-proof cable with a compacted conductor according to claim 3, characterized in that: A marking strip (66) is provided inside the four insulating layers. The cross section of the marking strip (66) is a trapezoidal structure.
5. The mineral fire-resistant cable with a compacted conductor according to claim 1, characterized in that: The fiberglass tape (4), the corrugated copper sheath (2), and the outer sheath (1) are all cylindrical structures. The outer side of the corrugated copper sheath (2) is in close contact with the inner side of the outer sheath (1).
6. The mineral fire-resistant cable with a compacted conductor according to claim 2, wherein: The central conductor (61) is a cylindrical structure. The cross sections of the first sector conductor (62), the second sector conductor (63), and the third sector conductor (64) are all sector structures.
7. A mineral fire-proof cable with a compacted conductor according to claim 2, characterized in that: The outer circumference of the third sector conductor (64) is in close contact with the inner side of the second sector conductor (63). The outer circumference of the second sector conductor (63) is in close contact with the inner side of the first sector conductor (62).
8. A mineral fire-resistant cable with a compacted conductor according to claim 2, characterized in that: The central angle range of the third sector conductor (64) is 60° - 120°, and the length ratio range of the short arc to the long arc is 1:2.4 - 1:
3.
9. The mineral fire-resistant cable with a compacted conductor according to claim 2, characterized in that: The central angle range of the second sector conductor (63) is 30° - 36°, and the length ratio range of the short arc to the long arc is 1:1.4 - 1.
2.
10. A mineral fire-resistant cable with a compacted conductor according to claim 2, characterized in that: The central angle range of the first sector conductor (62) is 20° - 24°, and the length ratio range of the short arc to the long arc is 1:1.2 - 1:1.6.