Reinforced mineral fireproof cable

Abstract

The utility model discloses a reinforced mineral fireproof cable, which comprises an inner support framework, a plurality of unit conductors arranged on the inner support framework in a penetrating manner, and a mineral filling layer arranged between the inner support framework and the unit conductors in a filling manner, the halogen-free low-smoke sheath is sleeved outside the inner supporting framework; the inner supporting framework comprises a square framework located in the middle and a regular octagonal framework concentrically arranged on the outer portion. Partition pieces are fixedly arranged at the four corners of the square framework and the inner side of the regular octagonal framework. By adopting a mode of combining the mineral filling layer and the inner supporting framework, the conductor can be sealed, the strength of the cable is improved, the situation that the outer sheath is damaged due to temperature rise of the conductor can be effectively reduced, and the service life of the cable is prolonged. Meanwhile, the halogen-free low-smoke sheath is arranged outside the metal layer, and the halogen-free low-smoke sheath has the performances of high temperature resistance, low smoke, flame retardance, environmental protection and the like, so that the environment pollution caused by the cable in the prior art during combustion is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a reinforced mineral fireproof cable. Background Art

[0002] With the development of society, the power consumption of various electrical equipment has also increased. Therefore, the requirements for the current carrying capacity of cables have become higher and higher, resulting in a continuous increase in the cross-section of the conductive core of the cable.

[0003] Since the material of the cable's outer sheath is usually composed of organic polymers of plastic and rubber, after a long period of work, as the cable's temperature gradually increases, the wear resistance of the outer sheath will gradually decrease, causing the cable's outer sheath to wear, causing the conductor's electrical conductivity and mechanical properties to drop sharply, seriously affecting the cable's service life, and leading to safety accidents. Moreover, when the cable burns, it will emit a large amount of toxic smoke, which will seriously pollute the environment and even cause harm to the workers. Utility Model Content

[0004] The utility model aims to overcome the problems of high temperature affecting the service life of the outer sheath and generating toxic smoke when burning when the existing cable is used, and to provide a reinforced mineral fireproof cable.

[0005] A reinforced mineral fireproof cable, comprising

[0006] Internal support frame,

[0007] Multiple unit conductors are inserted into the inner support frame.

[0008] A mineral filling layer is filled and arranged between the inner supporting skeleton and the unit conductor;

[0009] Halogen-free low-smoke sheath, sleeved on the outside of the inner support frame;

[0010] The inner support frame comprises a square frame located in the middle and a regular octagonal frame arranged concentrically on the outside; partitions are fixedly arranged at the four corners of the square frame and on the inner side of the regular octagonal frame.

[0011] Furthermore, the unit conductors are arranged in five numbers, which are respectively located in the middle of the square frame and arranged around the square frame and the regular octagonal frame.

[0012] Furthermore, a first gap is formed between the square frame and the unit conductor, a second gap is formed between the four corners of the square frame and the regular octagonal frame and the unit conductor, and the mineral filling layer is arranged in the first gap and the second gap.

[0013] Furthermore, the unit conductor includes a conductive core and an insulating layer wrapped around the conductive core.

[0014] Furthermore, a metal layer is provided on the inner side of the halogen-free low-smoke sheath.

[0015] Furthermore, the metal layer is formed by spirally winding a metal plate.

[0016] Furthermore, a third gap is provided between the metal layer and the inner supporting frame, and the mineral filling layer is filled in the third gap.

[0017] The beneficial effects of the utility model are: by combining the mineral filling layer and the inner support frame, the conductor can be sealed, the cable strength is increased, and the occurrence of conductor temperature rise damaging the outer sheath can be effectively reduced, thereby increasing the service life of the cable. At the same time, a halogen-free low-smoke sheath is also provided outside the metal layer, and the halogen-free low-smoke sheath has the properties of high temperature resistance, low smoke, flame retardancy, and environmental protection, thereby avoiding the pollution of the environment by the cable in the prior art during combustion. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the cable;

[0019] In the figure, 100-first gap, 200-second gap, 300-third gap, 1-halogen-free low-smoke sheath, 2-metal layer, 3-inner support frame, 31-regular octagonal frame, 32-square frame, 33-separator, 4-unit conductor, 41-conductive core, 42-insulating layer, 5-mineral filling layer. DETAILED DESCRIPTION

[0020] The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations. The details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0021] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0022] Example 1

[0023] like Figure 1 As shown, a reinforced mineral fireproof cable comprises an inner support skeleton 3, wherein the inner support skeleton 3 comprises a square skeleton 32 located in the middle and a regular octagonal skeleton 31 arranged concentrically on the outside; a separator 33 is fixedly arranged at the four corners of the square skeleton 32 and the inner side of the regular octagonal skeleton 31. Specifically, the square skeleton 32, the regular octagonal skeleton 31 and the separator 33 form five chambers, wherein the middle part is a rectangular chamber, and the remaining four are arranged around the rectangular chamber, and a unit conductor 4 is arranged in each chamber.

[0024] In this solution, the unit conductors 4 are provided in five numbers, which are respectively located in the middle of the square frame 32 and are arranged around the square frame 32 and the regular octagonal frame 31. Specifically, a first gap 100 is formed between the square frame 32 and the unit conductor 4, and a second gap 200 is formed between the four corners of the square frame 32 and the regular octagonal frame 31 and the unit conductor 4, and the mineral filling layer 5 is arranged in the first gap 100 and the second gap 200.

[0025] A plurality of unit conductors 4 are arranged on the inner support frame 3, and the unit conductors 4 include a conductive core 41 and an insulating layer 42 wrapped around the conductive core 41. Specifically, the conductive core 41 is used to transmit power or information, and the conductive core 41 is a copper conductor, which is formed by twisting copper wires. The outer wall of the conductive core 41 is wrapped with an insulating layer 42, and the insulating layer 42 is a mineral composite insulating layer. The mineral composite insulating layer has excellent insulation effect and has a certain insulation property to isolate oxygen, thereby increasing the flame retardancy of the cable.

[0026] The mineral filling layer 5 is filled and arranged between the inner supporting frame 3 and the unit conductor 4; the mineral powder of the mineral filling layer 6 is magnesium hydroxide, which is a white amorphous powder and is a new type of filling flame retardant.

[0027] The halogen-free low-smoke sheath 1 is sleeved on the outside of the inner support frame 3; the halogen-free low-smoke sheath 1 is wrapped on the outer wall of the metal layer 2. The halogen-free low-smoke sheath 1 has the properties of high temperature resistance, low smoke, flame retardancy, and environmental protection, which prevents the cables in the prior art from polluting the environment during combustion. The halogen-free low-smoke sheath 1 also has good corrosion resistance, which prevents the cable from being corroded during long-term use, causing the cable to break, and increases the service life of the cable.

[0028] In order to further enhance the structural strength of the cable, a metal layer 2 is further provided on the inner side of the halogen-free low-smoke sheath 1, and the metal layer 2 is formed by spirally winding a metal plate. A third gap 300 is further provided between the metal layer 2 and the inner support frame 3, and the mineral filling layer 5 is filled in the third gap 300. The metal layer 2 is wrapped on the mineral filling layer, and the metal layer 2 can seal the unit conductor 4 and the inner support frame 3, thereby ensuring the integrity of the cable and improving the strength of the cable.

[0029] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A reinforced mineral fireproof cable, characterized in that: include Internal support frame (3), A plurality of unit conductors (4) are inserted through the inner support frame (3), A mineral filling layer (5) is filled and arranged between the inner support frame (3) and the unit conductor (4); A halogen-free low-smoke sheath (1) is sleeved on the outside of the inner support frame (3); The inner support frame (3) comprises a square frame (32) located in the middle and a regular octagonal frame (31) arranged concentrically on the outside; partitions (33) are fixedly arranged at the four corners of the square frame (32) and on the inner side of the regular octagonal frame (31).

2. A reinforced mineral fireproof cable according to claim 1, characterized in that: The unit conductors (4) are arranged in five numbers, and are respectively located in the middle of the square frame (32) and arranged in a surrounding manner between the square frame (32) and the regular octagonal frame (31).

3. A reinforced mineral fireproof cable according to claim 2, characterized in that: A first gap (100) is formed between the square frame (32) and the unit conductor (4), a second gap (200) is formed between the four corners of the square frame (32) and the regular octagonal frame (31) and the unit conductor (4), and the mineral filling layer (5) is arranged in the first gap (100) and the second gap (200).

4. A reinforced mineral fireproof cable according to claim 1, characterized in that: The unit conductor (4) comprises a conductive core (41) and an insulating layer (42) wrapped around the conductive core (41).

5. A reinforced mineral fireproof cable according to claim 1, characterized in that: A metal layer (2) is also provided on the inner side of the halogen-free low-smoke sheath (1).

6. A reinforced mineral fireproof cable according to claim 5, characterized in that: The metal layer (2) is formed by spirally winding a metal plate.

7. A reinforced mineral fireproof cable according to claim 5 or 6, characterized in that: A third gap (300) is also provided between the metal layer (2) and the inner support frame (3), and the mineral filling layer (5) is filled in the third gap (300).

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