Fireproof composite cable

Abstract

The utility model discloses a kind of fireproof composite cables, belong to fireproof cable technical field, including composite cable outer layer and composite cable core, the inner wall of outer layer is fixedly covered with first fireproof layer, the inner wall of first fireproof layer is fixedly bonded with second fireproof layer, the inner wall of second fireproof layer is fixedly bonded with inner layer, and the core is covered in the inside of inner layer;The outer wall of outer layer is fixedly installed with mounting ring, the side of mounting ring is fixedly installed with controller, the side of mounting ring is fixedly installed with multiple springs and electromagnet;The outer wall of outer layer is slidably sleeved with hollow ring, the side of hollow ring close to mounting ring is fixedly connected with magnetic attraction ring, and magnetic attraction ring is attracted with multiple electromagnet;The end of multiple spring is extruded and slidably attached with the side wall of magnetic attraction ring.Compared with prior art, the device can effectively improve the fireproof effect of cable, and can extinguish the burning point of cable outer layer.

Description

Technical Field

[0001] This utility model belongs to the field of fireproof cable technology, and in particular to a fireproof composite cable. Background Technology

[0002] Fire-resistant cables are generally composed of a cable core and various fire-resistant material layers. However, in actual use, fire-resistant cables can prevent fire sources from burning through the cable, but the high temperature of the outer layer of the cable burning can affect the internal core, and current fire-resistant cables cannot prevent the outer rubber layer of the cable from burning.

[0003] For example, an existing Chinese patent publication number, CN211062502U, describes a fire-retardant cable comprising a flame-retardant tube, an outer sheath, a waterproof membrane, a fire-retardant layer, an inner sheath, a filling layer, an insulating tube, and a cable core. The flame-retardant tube is made of ceramic, and an outer sheath made of insulating rubber is fixedly connected to the inner wall of the flame-retardant tube. A waterproof membrane is fixedly connected to the inner wall of the outer sheath, and a fire-retardant layer made of fire-retardant silicone sheet is laminated to the inner wall of the waterproof membrane. Although the above device can improve the overall flame-retardant effect of the fire-retardant cable, and the fire-retardant mortar constituting the filling layer is uniformly mixed with halogen-free flame-retardant particles, thus improving the fire-retardant effect, in actual use, this cable cannot prevent the outer rubber layer of the cable from burning. The high temperature of the burning outer layer is conducted to the inner core, which will have a great impact on the core. Therefore, a fire-resistant composite cable is urgently needed to solve this problem. Utility Model Content

[0004] The purpose of this invention is to provide a fire-resistant composite cable to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a fireproof composite cable, comprising a composite cable outer layer and a composite cable core, wherein a first fireproof layer is fixedly covered on the inner wall of the outer layer, a second fireproof layer is fixedly bonded to the inner wall of the first fireproof layer, an inner layer is fixedly bonded to the inner wall of the second fireproof layer, and the core is covered inside the inner layer.

[0006] An installation ring is fixedly installed on the outer wall of the outer layer. A controller is fixedly installed on one side of the installation ring, and multiple springs and electromagnets are fixedly installed on one side of the installation ring.

[0007] A hollow ring is slidably fitted onto the outer wall of the outer layer. A magnetic ring is fixedly connected to the side of the hollow ring near the mounting ring. The magnetic ring is attracted to multiple electromagnets.

[0008] The ends of the multiple springs are pressed and slidably attached to the sidewall of the magnetic ring.

[0009] Preferably, the first fireproof layer is made of fireproof asbestos and is wrapped around the outside of the second fireproof layer.

[0010] Preferably, the second fireproof layer is made of polyvinyl chloride and is wrapped around the outer wall of the inner layer.

[0011] Preferably, a sealing ring is fixedly sleeved on the side wall of the outer layer, and the sealing ring abuts against the inner wall of the hollow ring near the mounting ring.

[0012] Preferably, a sealing ring is fixedly bonded to the inner wall of the hollow ring on the side away from the mounting ring, and the inner wall of the sealing ring is sealed and fitted to the outer wall of the outer layer.

[0013] Preferably, a temperature sensor is fixedly installed inside the inner layer, and the temperature sensor is electrically connected to the controller.

[0014] Preferably, a liquid inlet pipe is connected to the side wall of the hollow ring, and a one-way valve is fixedly installed inside the liquid inlet pipe.

[0015] Compared with the prior art, the technical effects and advantages of this utility model are as follows:

[0016] This fireproof composite cable benefits from the setting of a first fireproof layer and a second fireproof layer. The fireproof asbestos mesh of the first fireproof layer is woven and wrapped around the outer wall of the second fireproof layer. This can block the fire source on the outside of the first fireproof layer and further improve the tensile strength of the cable. At the same time, the second fireproof layer can block the high temperature of the asbestos mesh through polyvinyl chloride material, preventing excessive temperature from being conducted to the wire core.

[0017] This fireproof composite cable benefits from the installation ring, controller, electromagnet, spring, and hollow ring structure. The controller is electrically connected to the electromagnet and temperature sensor. When the cable is exposed to flames or the temperature sensor senses high temperature, the controller will de-energize the electromagnet, causing it to lose its magnetism. The compressed spring will push the hollow ring forward and coat the outer layer with a water-based fire extinguishing agent, thereby extinguishing the burning point of the outer layer.

[0018] This fire-resistant composite cable has a hollow ring through which a water-based fire extinguishing agent is injected. The water-based fire extinguishing agent is made with water as the base material and various additives. It has good fluidity, penetration and flame retardancy and can be used to extinguish Class A (solid) fires and some Class B (liquid) fires. The water-based fire extinguishing agent can form a thick covering layer on the outer layer to isolate the air, thereby improving the fire extinguishing performance.

[0019] This fireproof composite cable has an open inner wall in the hollow ring, which allows the water-based fire extinguishing agent to come into direct contact with the outer layer. When the hollow ring moves along the outer layer, it can coat the outer layer with the water-based fire extinguishing agent, thereby extinguishing the fire at the combustion point on the outer layer and forming a covering layer to isolate the air and achieve a fireproof effect.

[0020] Compared with existing technologies, this fire-resistant composite cable device can effectively improve the fire resistance of the cable and extinguish the combustion point of the outer layer of the cable. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the mounting ring, electromagnet, and spring in this utility model;

[0024] Figure 3 This is a schematic diagram of the hollow ring structure in this utility model;

[0025] Figure 4 This utility model Figure 1 Enlarged schematic diagram of part A in the middle.

[0026] Explanation of reference numerals in the attached figures:

[0027] In the diagram: 1. Outer layer; 2. Second fireproof layer; 3. First fireproof layer; 4. Inner layer; 5. Core wire; 6. Mounting ring; 7. Controller; 8. Electromagnet; 9. Spring; 10. Hollow ring; 11. Sealing ring; 12. Magnetic ring; 13. Sealing ring; 14. Liquid inlet pipe; 15. Temperature sensor. Detailed Implementation

[0028] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0029] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this utility model, and are explained here together.

[0030] The connection method can be any existing method, such as bonding, welding, or bolting, depending on the actual needs.

[0031] like Figures 1 to 4 The main structure of the fireproof composite cable shown is a composite cable outer layer 1 and a composite cable core 5. The inner wall of the outer layer 1 is fixedly covered with a first fireproof layer 3. The fireproof asbestos mesh of the first fireproof layer 3 is woven and wrapped around the outer wall of the second fireproof layer 2. This can block the fire source outside the first fireproof layer 3 and further improve the tensile strength of the cable.

[0032] The inner wall of the first fireproof layer 3 is fixedly bonded with the second fireproof layer 2, and the inner wall of the second fireproof layer 2 is fixedly bonded with the inner layer 4. The wire core 5 is wrapped inside the inner layer 4. The second fireproof layer 2 is wrapped with the outer wall of the inner layer 4 by polyvinyl chloride material. The second fireproof layer 2 can block the high temperature of the asbestos mesh through the polyvinyl chloride material and prevent the excessive temperature from being conducted to the wire core 5.

[0033] An installation ring 6 is fixedly installed on the outer wall of the outer layer 1. A controller 7 is fixedly installed on one side of the installation ring 6. Multiple springs 9 and electromagnets 8 are fixedly installed on one side of the installation ring 6. A temperature sensor 15 is fixedly installed inside the inner layer 4. The temperature sensor 15 is electrically connected to the controller 7. The controller 7 is electrically connected to the electromagnets 8 and the temperature sensor 15. When the temperature sensor 15 senses that the temperature is higher than the set value, the signal will be transmitted to the controller 7. The controller 7 will send a signal to the electromagnet 8 to de-energize it. De-energizing the electromagnet 8 will release the restriction on the hollow ring 10. At this time, the compressed spring 9 will push the magnetic ring 12 and the hollow ring 10 out.

[0034] A hollow ring 10 is slidably sleeved on the outer wall of the outer layer 1. A magnetic ring 12 is fixedly connected to the side of the hollow ring 10 near the mounting ring 6. The magnetic ring 12 is attracted to multiple electromagnets 8. The ends of multiple springs 9 are pressed and slidably attached to the side wall of the magnetic ring 12. Thanks to the structure of the mounting ring 6, controller 7, electromagnets 8, springs 9 and hollow ring 10, the controller 7 is electrically connected to the electromagnets 8 and the temperature sensor 15. When the cable is burned by flames or the temperature sensor 15 senses high temperature, the controller 7 will control the electromagnets 8 to be de-energized, causing the electromagnets 8 to lose their magnetism. The compressed springs 9 will push the hollow ring 10 forward and coat the surface of the outer layer 1 with a water-based fire extinguishing agent, thereby extinguishing the burning point of the outer layer 1.

[0035] The first fireproof layer 3 is made of fireproof asbestos woven and wrapped around the outside of the second fireproof layer 2. The second fireproof layer 2 is made of polyvinyl chloride covering the outer wall of the inner layer 4. Thanks to the arrangement of the first fireproof layer 3 and the second fireproof layer 2, the fireproof asbestos mesh of the first fireproof layer 3 is woven and wrapped around the outer wall of the second fireproof layer 2. This can block the fire source on the outside of the first fireproof layer 3 and further improve the tensile strength of the cable. At the same time, the second fireproof layer 2 can block the high temperature of the asbestos mesh through the polyvinyl chloride material, preventing excessive temperature from being conducted to the core 5.

[0036] A sealing ring 11 is fixedly sleeved on the side wall of the outer layer 1. The sealing ring 11 seals against the inner wall of the hollow ring 10 near the mounting ring 6. When the hollow ring 10 and the electromagnet 8 are attracted and limited, the sealing ring 11 can seal the inner wall of the hollow ring 10 to prevent leakage of the water-based fire extinguishing agent inside.

[0037] A sealing ring 13 is fixedly bonded to the inner wall of the hollow ring 10 on the side away from the mounting ring 6. The inner wall of the sealing ring 13 is sealed to the outer wall of the outer layer 1. The sealing ring 13 can seal the inner wall of the hollow ring 10 on the side away from the mounting ring 6, thereby preventing the liquid inside from leaking out.

[0038] The hollow ring 10 is connected to the side wall of the liquid inlet pipe 14, and a one-way valve is fixedly installed inside the liquid inlet pipe 14. The one-way valve can effectively prevent the water-based fire extinguishing agent that has entered the hollow ring 10 from flowing out of the liquid inlet pipe 14.

[0039] Working principle

[0040] When this fireproof composite cable is in use, if a fire breaks out at the cable outlet, the temperature will be conducted through the outer layer 1, the first fireproof layer 3, and the second fireproof layer 2 to the inner layer 4. After the temperature sensor 15 detects the high temperature, the controller 7 will de-energize the electromagnet 8. At this time, the electromagnet 8 will separate from the magnetic ring 12, and multiple springs 9 will push the magnetic ring 12 and the hollow ring 10 to slide along the outer layer 1. When the hollow ring 10 separates from the sealing ring 11, one side of the hollow ring 10 will lose its seal, allowing the water-based fire extinguishing agent inside the hollow ring 10 to be coated onto the outer layer 1 as the hollow ring 10 moves. This extinguishes the fire on the outer layer 1 and forms a covering film on the outer layer 1 to prevent it from catching fire.

[0041] It should be noted that, in this document, relational terms such as "one" and "two" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fireproof composite cable comprising a composite cable outer layer (1) and a composite cable core (5), characterized in that: The inner wall of the outer layer (1) is fixedly covered with a first fireproof layer (3), the inner wall of the first fireproof layer (3) is fixedly bonded with a second fireproof layer (2), the inner wall of the second fireproof layer (2) is fixedly bonded with an inner layer (4), and the wire core (5) is wrapped inside the inner layer (4). An installation ring (6) is fixedly installed on the outer wall of the outer layer (1). A controller (7) is fixedly installed on one side of the installation ring (6). A plurality of springs (9) and an electromagnet (8) are fixedly installed on one side of the installation ring (6). A hollow ring (10) is slidably sleeved on the outer wall of the outer layer (1). A magnetic ring (12) is fixedly connected to the side of the hollow ring (10) near the mounting ring (6). The magnetic ring (12) is attracted to multiple electromagnets (8). The ends of the multiple springs (9) are pressed and slid against the sidewall of the magnetic ring (12).

2. The fire-resistant composite cable according to claim 1, characterized in that: The first fireproof layer (3) is made of fireproof asbestos and is wrapped around the outside of the second fireproof layer (2).

3. The fire-resistant composite cable according to claim 2, characterized in that: The second fireproof layer (2) is made of polyvinyl chloride and is wrapped around the outer wall of the inner layer (4).

4. The fire-resistant composite cable according to claim 1, characterized in that: A sealing ring (11) is fixedly sleeved on the side wall of the outer layer (1), and the sealing ring (11) seals against the inner wall of the hollow ring (10) near the mounting ring (6).

5. A fire-resistant composite cable according to claim 1, characterized in that: A sealing ring (13) is fixedly bonded to the inner wall of the hollow ring (10) away from the mounting ring (6), and the inner wall of the sealing ring (13) is sealed and adhered to the outer wall of the outer layer (1).

6. A fire-resistant composite cable according to claim 1, characterized in that: A temperature sensor (15) is fixedly installed inside the inner layer (4), and the temperature sensor (15) is electrically connected to the controller (7).

7. A fire-resistant composite cable according to claim 1, characterized in that: The side wall of the hollow ring (10) is connected to an inlet pipe (14), and a one-way valve is fixedly installed inside the inlet pipe (14).

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