Fireproof flame-retardant communication cable

Abstract

The utility model discloses a fireproof flame-retardant communication cable, which relates to the technical field of communication cables and comprises an outer sheath, a reinforcing layer arranged on the inner side of the outer sheath, a flame-retardant layer arranged on the inner side of the reinforcing layer, a protective sleeve layer arranged on the inner side of the flame-retardant layer and a conductor. The first fireproof coating and the flame-retardant silicone rubber material of the outer sheath, the iron gauze layer of the reinforcing layer, the second fireproof coating of the flame-retardant layer, and the heat insulation coating and the halogen-free flame-retardant polyolefin material of the protective sleeve layer jointly form a strong fireproof barrier. The fire-proof and heat-insulation cable has the advantages that the fire-proof and heat-insulation cable can effectively delay flame spreading and heat transfer, particularly, the fire-proof and heat-insulation filler made of ceramic fiber materials is good in high-temperature resistance and heat insulation performance, key protection is provided for the conductor, it is guaranteed that the cable can maintain normal work for a certain time when a fire occurs, and communication continuity in an emergency is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of communication cable technology, and in particular to a fireproof and flame-retardant communication cable. Background Technology

[0002] Communication cables are cables used to transmit telephone, telegram, fax documents, television and radio programs, data and other electrical signals.

[0003] In practical applications, fire-resistant and flame-retardant communication cables typically require the following technologies:

[0004] 1. Fire resistance: It can effectively prevent the spread of flames and delay the burning of cables in the event of a fire;

[0005] 2. Thermal insulation performance reduces heat transfer and protects the internal conductors for normal operation;

[0006] 3. Good structural stability, maintaining the integrity of the cable structure under high temperature and external force.

[0007] Existing communication cables have some shortcomings in terms of fire resistance, structural stability, and heat insulation. They have poor fire resistance, making it difficult to resist fire and prevent the spread of fire. They lack support and reinforcement, making them prone to deformation and breakage under external forces. Their heat insulation effect is poor, failing to block heat conduction and easily causing the internal core to overheat and be damaged, thus affecting communication. Utility Model Content

[0008] Technical problems to be solved

[0009] In view of the shortcomings of the existing technology, this utility model provides a fireproof and flame-retardant communication cable, which solves the technical problems of the shortcomings of existing communication cables in terms of fire resistance, structural stability and heat insulation.

[0010] Technical solution

[0011] To achieve the above objectives, this utility model provides the following technical solution:

[0012] A fire-resistant and flame-retardant communication cable includes an outer sheath, a reinforcing layer disposed inside the outer sheath, a flame-retardant layer disposed inside the reinforcing layer, a protective sheath layer disposed inside the flame-retardant layer, and a conductor. A fire-resistant and heat-insulating filler is disposed between the conductor and the protective sheath layer. A heat-insulating coating is disposed on the outer surface of the protective sheath layer. A second fire-retardant coating is coated on the outer surface of the flame-retardant layer. A wire mesh layer is embedded inside the reinforcing layer. A first fire-retardant coating is coated on the outer surface of the outer sheath.

[0013] Preferably, the conductor includes a wire core, a shielding layer, and an insulating rubber layer. The shielding layer is sleeved on the outside of the wire core, and the insulating rubber layer is sleeved on the outside of the shielding layer. The shielding layer has a metal braided mesh structure and is used to shield external electromagnetic interference.

[0014] Preferably, a connecting post is provided in the middle of the protective sleeve, and four partition plates are fixedly installed at equal intervals around the outer end of the connecting post. All four partition plates are fixedly connected to the inner wall of the protective sleeve, and a heat-insulating coating is provided on the outer side of the protective sleeve.

[0015] Preferably, the outer sheath and the flame-retardant layer are both made of flame-retardant silicone rubber material, and the protective sheath layer is made of halogen-free flame-retardant polyolefin material.

[0016] Beneficial effects

[0017] I. This fire-resistant and flame-retardant communication cable significantly improves the safety and reliability of the cable in a fire through the synergistic effect of its multi-layered protective structure. The first fire-resistant coating and flame-retardant silicone rubber material of the outer sheath, the iron wire mesh layer of the reinforcing layer, the second fire-resistant coating of the flame-retardant layer, and the heat-insulating coating and halogen-free flame-retardant polyolefin material of the protective sheath layer together construct a strong fire barrier, which can effectively delay the spread of flames and the transfer of heat. In particular, the fire-resistant and heat-insulating filler made of ceramic fiber material has good high temperature resistance and heat insulation performance, providing critical protection for the conductor and ensuring that the cable can maintain normal operation for a certain period of time in the event of a fire, thus ensuring the continuity of communication in emergency situations.

[0018] Second, the conductor's core can efficiently transmit electrical signals, the metal braided mesh structure of the shielding layer effectively shields external electromagnetic interference, and the insulating rubber layer prevents current leakage, ensuring stable signal transmission and safe use. The connecting posts and partitions inside the protective sheath not only help maintain structural stability in a fire, but also ensure the relative positions of the various components inside the cable during daily use, reducing performance degradation caused by factors such as vibration and bending. Attached Figure Description

[0019] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0020] Figure 1 This is a structural diagram of the fireproof and flame-retardant communication cable of this utility model;

[0021] Figure 2 This is a structural diagram of the protective sleeve of this utility model;

[0022] Figure 3 This is a structural diagram of the conductor of this utility model;

[0023] Figure 4 This is a structural diagram of the reinforcing layer of this utility model.

[0024] Legend: 1. Outer sheath; 2. Reinforcing layer; 21. Wire mesh layer; 3. Flame retardant layer; 31. Second fireproof coating; 4. Protective sheath layer; 41. Heat insulation coating; 5. Conductor; 51. Wire core; 52. Shielding layer; 53. Insulating rubber layer; 6. Connecting post; 61. Separator; 7. Fireproof and heat insulation filler. Detailed Implementation

[0025] This application provides a fire-resistant and flame-retardant communication cable, effectively solving some shortcomings of existing communication cables in terms of fire resistance, structural stability, and heat insulation. Through the synergistic effect of a multi-layered protective structure, this fire-resistant and flame-retardant communication cable significantly improves the cable's safety and reliability in a fire. The first fire-retardant coating and flame-retardant silicone rubber material of the outer sheath, the wire mesh layer of the reinforcing layer, the second fire-retardant coating of the flame-retardant layer, and the heat-insulating coating and halogen-free flame-retardant polyolefin material of the protective sheath layer together construct a strong fire barrier, effectively delaying the spread of flames and the transfer of heat. In particular, the use of ceramic fiber material further enhances its effectiveness. The fire-resistant and heat-insulating filler has excellent high-temperature resistance and heat insulation performance, providing crucial protection for the conductor. This ensures that the cable can maintain normal operation for a certain period of time during a fire, guaranteeing the continuity of communication in emergencies. The conductor core can efficiently transmit electrical signals, and the metal braided mesh structure of the shielding layer effectively shields against external electromagnetic interference. The insulating rubber layer prevents current leakage, ensuring stable signal transmission and safe use. The connecting posts and partitions inside the protective sleeve not only help maintain structural stability during a fire but also ensure the relative positions of the various components inside the cable during daily use, reducing performance degradation caused by factors such as vibration and bending.

[0026] Example: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the technical solution in this application embodiment effectively solves some technical problems of existing communication cables in terms of fire resistance, structural stability, and heat insulation. The overall idea is as follows:

[0027] To address the problems existing in the prior art, this utility model provides a fireproof and flame-retardant communication cable, including an outer sheath 1, a reinforcing layer 2 disposed inside the outer sheath 1, a flame-retardant layer 3 disposed inside the reinforcing layer 2, a protective sleeve layer 4 disposed inside the flame-retardant layer 3, and a conductor 5. A fireproof and heat-insulating filler 7 is disposed between the conductor 5 and the protective sleeve layer 4. A heat-insulating coating 41 is disposed on the outer surface of the protective sleeve layer 4, and a second fireproof coating 31 is coated on the outer surface of the flame-retardant layer 3. A wire mesh layer 21 is embedded inside the reinforcing layer 2, and a first fireproof coating is coated on the outer surface of the outer sheath 1. The conductor 5 includes a wire core 51, a shielding layer 52, and an insulating rubber layer 53. The shielding layer 52 is fitted with... An insulating rubber layer 53 is fitted around the outer side of the core 51 and the outer side of the shielding layer 52. The shielding layer 52 has a metal braided mesh structure and is used to shield against external electromagnetic interference. A connecting post 6 is provided in the middle of the protective sleeve layer 4. Four partition plates 61 are fixedly installed circumferentially at the outer end of the connecting post 6. All four partition plates 61 are fixedly connected to the inner wall of the protective sleeve layer 4. A heat-insulating coating 41 is provided on the outer side of the protective sleeve layer 4. The outer sheath 1 and the flame-retardant layer 3 are both made of flame-retardant silicone rubber material, and the protective sleeve layer 4 is made of halogen-free flame-retardant polyolefin material. In the event of a fire, the first fireproof coating on the outer surface of the outer sheath 1 will take effect first, delaying the direct contact of the flame with the cable. The flame-retardant silicone rubber material used in layer 1 has certain flame-retardant properties and can prevent the spread of fire to a certain extent. The wire mesh layer 21 embedded inside the reinforcing layer 2 enhances the overall structural strength of the cable and prevents the cable from easily deforming or being damaged in a fire. The second fireproof coating 31 of the flame-retardant layer 3 works together with the flame-retardant silicone rubber material to further suppress the intrusion of flames and reduce heat transfer to the interior. The protective sleeve layer 4 is made of halogen-free flame-retardant polyolefin material, which has good flame-retardant effect. Its outer heat insulation coating 41 can reduce the transfer of external heat to the interior. The connecting posts 6 and partition plates 61 inside the protective sleeve layer 4 help maintain the stability of the internal structure and ensure the normal operation of the conductor 5. The fireproof and heat-insulating filler 7 between the conductor 5 and the protective sheath 4 effectively blocks heat and flames, protecting the conductor 5 from high temperatures. Through the synergistic effect of the above layers, the communication cable can maintain normal operation for a certain period of time during a fire, ensuring the continuity of communication and reducing the risk of communication interruption caused by fire. The fireproof and heat-insulating filler 7 is made of ceramic fiber material, which has excellent high temperature resistance and heat insulation effect, and can effectively block heat transfer. The wire core 51 in the conductor 5 is responsible for transmitting electrical signals. The shielding layer 52 is a metal braided mesh structure, which effectively shields external electromagnetic interference and ensures stable signal transmission. The insulating rubber layer 53 prevents current leakage.

[0028] Working principle:

[0029] In the first step, when a fire occurs, the first fire-retardant coating on the outer surface of the outer sheath 1 takes effect first, delaying the direct contact of flames with the cable. The flame-retardant silicone rubber material used in the outer sheath 1 has certain flame-retardant properties, which can prevent the spread of fire to a certain extent. The wire mesh layer 21 embedded inside the reinforcing layer 2 enhances the overall structural strength of the cable, preventing the cable from easily deforming or being damaged in a fire. The second fire-retardant coating 31 coated on the flame-retardant layer 3 works together with the flame-retardant silicone rubber material to further suppress the intrusion of flames and reduce heat transfer to the interior. The protective sheath layer 4 is made of halogen-free flame-retardant polyolefin material, which has good flame-retardant effect. Its outer heat-insulating coating Layer 41 reduces the transfer of external heat inward. The connecting pillars 6 and partition plates 61 inside the protective sleeve layer 4 help maintain the stability of the internal structure and ensure the normal working space of the conductor 5. The fireproof and heat-insulating filler 7 between the conductor 5 and the protective sleeve layer 4 can effectively block heat and flames and protect the conductor 5 from high temperature. Through the synergistic effect of the above layers, the communication cable can maintain normal operation for a certain period of time in the event of a fire, ensuring the continuity of communication and reducing the risk of communication interruption caused by fire. The fireproof and heat-insulating filler 7 is made of ceramic fiber material, which has excellent high temperature resistance and heat insulation effect and can effectively block heat transfer.

[0030] In the second step, the wire core 51 in conductor 5 is responsible for transmitting electrical signals, the shielding layer 52 is a metal braided mesh structure, which effectively shields external electromagnetic interference and ensures stable signal transmission, and the insulating rubber layer 53 prevents current leakage.

[0031] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A fire-resistant and flame-retardant communication cable, comprising an outer sheath (1), a reinforcing layer (2) disposed inside the outer sheath (1), a flame-retardant layer (3) disposed inside the reinforcing layer (2), a protective sleeve layer (4) disposed inside the flame-retardant layer (3), and a conductor (5), characterized in that: A fireproof and heat-insulating filler (7) is provided between the conductor (5) and the protective sleeve (4), and a heat-insulating coating (41) is provided on the outer surface of the protective sleeve (4); The outer surface of the flame-retardant layer (3) is coated with a second fireproof coating (31), and the reinforcing layer (2) is embedded with a wire mesh layer (21). The outer surface of the outer sheath (1) is coated with a first fireproof coating.

2. The fire-resistant and flame-retardant communication cable according to claim 1, characterized in that: The conductor (5) includes a wire core (51), a shielding layer (52), and an insulating rubber layer (53); The shielding layer (52) is sleeved on the outside of the core (51), and an insulating rubber layer (53) is sleeved on the outside of the shielding layer (52).

3. The fire-resistant and flame-retardant communication cable according to claim 2, characterized in that: The shielding layer (52) has a metal woven mesh structure and is used to shield external electromagnetic interference.

4. The fire-resistant and flame-retardant communication cable according to claim 3, characterized in that: A connecting post (6) is provided in the middle of the protective sleeve (4), and four partition plates (61) are fixedly installed at equal intervals around the outer end of the connecting post (6). The four partition plates (61) are fixedly connected to the inner wall of the protective sleeve (4), and the outer side of the protective sleeve (4) is provided with a heat insulation coating (41).

5. A fire-resistant and flame-retardant communication cable according to claim 4, characterized in that: Both the outer sheath (1) and the flame-retardant layer (3) are made of flame-retardant silicone rubber material.

6. The fire-resistant and flame-retardant communication cable according to claim 5, characterized in that: The protective sleeve (4) is made of halogen-free flame-retardant polyolefin material.

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