Optical fiber composite wire cable with high-temperature-resistant structure

Abstract

The utility model discloses an optical fiber composite wire cable with a high-temperature-resistant structure, and relates to the field of wire cables. According to the optical fiber composite wire cable with the high-temperature-resistant structure, stable protection on the outer side of the cable is realized by utilizing relatively good crack resistance, insulativity, heat resistance and chemical resistance of the cross-linked polyethylene material of the outer protection layer, and the mechanical strength and anti-erosion capability of the cable are improved by utilizing the armor layer; the wire and cable can keep longer fire-resistant time at high temperature by utilizing excellent chemical stability and high-temperature performance of an inorganic magnesium oxide material of the fireproof layer, flame spreading and cable combustion under the condition of fire disasters are effectively prevented, support protection of the internal structure of the cable is realized through cooperation of the inner support layer and the outer support layer, and the service life of the cable is prolonged. The outer positioning block and the inner positioning block position the cable sleeve, the elastic filler buffers the external impact on the cable, and the protective hose cooperates with the limiting frame to position and support the fiber core, so that the overall impact resistance of the cable is improved.

Description

Technical Field

[0001] The utility model relates to the field of electric wires and cables, in particular to an optical fiber composite electric wire and cable with a high temperature resistant structure. Background Art

[0002] Fiber optic composite wire and cable is a type of cable that combines power transmission and optical communication transmission by combining optical units in low-voltage and medium-voltage power cables. It is characterized by the integration of the functions of optical fiber and power transmission. Compared with traditional cables, it integrates optical fiber and power transmission lines into one, is suitable for different business types, has strong mechanical properties, and is highly adaptable to the environment.

[0003] Existing optical fiber composite wires and cables have poor high temperature resistance, which makes them unable to adapt to long-term use in high temperature environments. They also lack fire resistance and flame retardancy, resulting in a low safety factor. They are prone to burning and damage in high temperature and fire environments. At the same time, they lack a structure to buffer external impacts, resulting in poor impact resistance of their internal structures, which are easily damaged by external influences. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an optical fiber composite wire and cable with a high temperature resistant structure, which solves the problem that the optical fiber composite wire and cable has poor high temperature resistance, resulting in the inability to adapt to long-term use in high temperature environments, and lacks fire retardant functions, resulting in a low safety factor, and is prone to burning and damage in high temperature and fire environments. At the same time, it lacks a structure to buffer external impacts, resulting in poor impact resistance of its internal structure, and is easily damaged by external influences.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: an optical fiber composite wire and cable with a high temperature resistant structure, comprising an outer protective layer, an armor layer is arranged on the inner side of the outer protective layer, a fireproof layer is arranged on the inner side of the armor layer, an outer supporting layer is arranged on the inner side of the fireproof layer, an inner supporting layer is arranged on the inner side of the outer supporting layer, a cable sleeve is arranged on the outer side of the inner supporting layer, a plurality of cable sleeves are arranged in a ring array, a cable core is arranged on the inner side of the inner supporting layer, an optical fiber sleeve is arranged on the inner side of the inner supporting layer, a protective hose is arranged on the inner side of the optical fiber sleeve, and a limiting frame and optical fiber core are arranged on the inner side of the protective hose.

[0006] Preferably, the outer protective layer is made of cross-linked polyethylene and is tightly fitted to the outer side of the armor layer. The armor layer is tightly fitted to the outer side of the fireproof layer. The fireproof layer is made of inorganic magnesium oxide material. The cross-linked polyethylene material of the outer protective layer has good crack resistance, insulation, heat resistance and chemical resistance to achieve stable protection of the outside of the cable. The armor layer is used to improve the mechanical strength and anti-corrosion ability of the cable. The inorganic magnesium oxide material of the fireproof layer has excellent chemical stability and high temperature performance, so that the wires and cables can maintain a long fire resistance time at high temperature, effectively preventing the spread of flames and the burning of the cable in the event of a fire.

[0007] Preferably, the outer side of the outer supporting layer and the inner side of the fireproof layer fit tightly, the inner side of the outer supporting layer is provided with external positioning blocks in a ring array, and the outer supporting layer and the external positioning blocks are integrally formed, so as to facilitate supporting and buffering the outer side of the cable.

[0008] Preferably, the outer side of the inner supporting layer is provided with inner positioning blocks in a circular array, the inner positioning blocks and the inner supporting layer are integrally formed, and are adapted to the outer positioning blocks, and are tightly fitted to the outer side of the cable sleeve, and the outer side of the cable sleeve is provided with an elastic filler between the inner supporting layer and the outer supporting layer to achieve positioning support and buffering of the cable sleeve.

[0009] Preferably, the cable sheath includes a protective layer, a shielding layer is arranged on the inner side of the protective layer, an insulating layer is arranged on the inner side of the shielding layer, and the insulating layer and the outer side of the cable core are tightly fitted to achieve full protection of the cable core.

[0010] Preferably, the outer side of the optical fiber sleeve and the inner side of the inner supporting layer are tightly fitted, and the inner side of the optical fiber sleeve and the outer side of the protective hose are tightly fitted, so as to achieve support and protection for the optical fiber.

[0011] Preferably, the limiting frame is fixedly connected to the inner side of the protective hose, and the fiber core and the inner side of the protective hose and the outer side of the limiting frame are adapted to each other to achieve positioning support for the fiber core.

[0012] Beneficial Effects

[0013] The utility model provides an optical fiber composite wire and cable with a high temperature resistant structure. Compared with the prior art, it has the following beneficial effects:

[0014] 1. The optical fiber composite wire and cable with a high temperature resistant structure is provided with an outer protective layer, an armor layer, and a fireproof layer. The cross-linked polyethylene material of the outer protective layer has good crack resistance, insulation, heat resistance and chemical resistance to achieve stable protection of the outer side of the cable. The armor layer is used to improve the mechanical strength and anti-corrosion ability of the cable. The inorganic magnesium oxide material of the fireproof layer has excellent chemical stability and high temperature performance, so that the wire and cable can maintain a long fire resistance time at high temperature, effectively preventing the spread of flames and the burning of the cable in the event of a fire.

[0015] 2. The optical fiber composite wire and cable with a high temperature resistant structure realizes support and protection for the internal structure of the cable by arranging an outer supporting layer, an outer positioning block, an inner supporting layer, an inner positioning block, an elastic filler, a protective hose, a limit frame, and a fiber core. The inner supporting layer and the outer supporting layer cooperate with each other, and the outer positioning block and the inner positioning block position the cable sheath. At the same time, the elastic filler buffers the external impact on the cable, and the protective hose cooperates with the limit frame to position and support the fiber core, thereby improving the overall impact resistance of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the outer support layer of the utility model;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the inner support layer of the utility model;

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the protective hose, the limiting frame and the fiber core of the utility model.

[0020] In the figure: 1. outer protective layer; 2. armor layer; 3. fireproof layer; 4. outer supporting layer; 41. outer positioning block; 5. inner supporting layer; 51. inner positioning block; 52. elastic filler; 6. cable sleeve; 61. protective layer; 62. shielding layer; 63. insulating layer; 7. cable core; 8. optical fiber sleeve; 9. protective hose; 10. limit frame; 11. optical fiber core. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-4The utility model provides a technical solution: an optical fiber composite wire and cable with a high temperature resistant structure, comprising an outer protective layer 1, an armor layer 2 is arranged on the inner side of the outer protective layer 1, a fireproof layer 3 is arranged on the inner side of the armor layer 2, the outer protective layer 1 is made of cross-linked polyethylene material, and is tightly fitted to the outer side of the armor layer 2, the armor layer 2 and the outer side of the fireproof layer 3 are tightly fitted, the fireproof layer 3 is made of inorganic magnesium oxide material, the cross-linked polyethylene material of the outer protective layer 1 has good crack resistance, insulation, heat resistance and chemical resistance, so as to realize stable protection of the outer side of the cable, the armor layer 2 is used to improve the mechanical strength and anti-corrosion ability of the cable, and the inorganic magnesium oxide material of the fireproof layer 3 has excellent chemical stability and high temperature performance, so that the wire and cable can maintain a long fire resistance time at high temperature;

[0023] An outer supporting layer 4 is arranged on the inner side of the fireproof layer 3, and the outer side of the outer supporting layer 4 is tightly fitted with the inner side of the fireproof layer 3. An outer positioning block 41 is arranged in a ring array on the inner side of the outer supporting layer 4, and the outer supporting layer 4 and the outer positioning block 41 are integrally formed. An inner supporting layer 5 is arranged on the inner side of the outer supporting layer 4, and a cable sleeve 6 is arranged on the outer side of the inner supporting layer 5. An inner positioning block 51 is arranged in a ring array on the outer side of the inner supporting layer 5, and the inner positioning block 51 and the inner supporting layer 5 are integrally formed, and are adapted to the outer positioning block 41, and are tightly fitted with the outer side of the cable sleeve 6. An elastic filler 52 is arranged on the outer side of the cable sleeve 6 between the inner supporting layer 5 and the outer supporting layer 4, wherein the elastic filler 52 is preferably made of elastic flame-retardant rubber material, and the cooperation of the inner supporting layer 5 and the outer supporting layer 4 realizes the support and protection of the internal structure of the cable, the outer positioning block 41 and the inner positioning block 51 position the cable sleeve 6, and at the same time, the elastic filler 52 buffers the external impact on the cable;

[0024] A plurality of cable sleeves 6 are arranged in a ring array, a cable core 7 is arranged on the inner side of the inner supporting layer 5, the cable sleeve 6 includes a protective layer 61, a shielding layer 62 is arranged on the inner side of the protective layer 61, an insulating layer 63 is arranged on the inner side of the shielding layer 62, the insulating layer 63 and the outer side of the cable core 7 are tightly fitted, an optical fiber sleeve 8 is arranged on the inner side of the inner supporting layer 5, a protective hose 9 is arranged on the inner side of the optical fiber sleeve 8, the outer side of the optical fiber sleeve 8 and the inner side of the inner supporting layer 5 are tightly fitted, the inner side of the optical fiber sleeve 8 and the outer side of the protective hose 9 are tightly fitted, a limiting frame 10 and a fiber core 11 are arranged on the inner side of the protective hose 9, the limiting frame 10 and the inner side of the protective hose 9 are fixedly connected, the fiber core 11 and the inner side of the protective hose 9 and the outer side of the limiting frame 10 are adapted to each other, the optical fiber is protected by the optical fiber sleeve 8, and the protective hose 9 cooperates with the limiting frame 10 to position and support the fiber core 11, thereby improving the overall impact resistance of the cable.

[0025] During use, the cross-linked polyethylene material of the outer protective layer 1 has good crack resistance, insulation, heat resistance and chemical resistance to achieve stable protection of the outer side of the cable, the armor layer 2 is used to improve the mechanical strength and corrosion resistance of the cable, and the inorganic magnesium oxide material of the fireproof layer 3 has excellent chemical stability and high temperature performance, so that the wires and cables can maintain a long fire resistance time at high temperatures, effectively preventing the spread of flames and the burning of the cable in the event of a fire. Through the cooperation of the inner supporting layer 5 and the outer supporting layer 4, the support and protection of the internal structure of the cable is achieved, the outer positioning block 41 and the inner positioning block 51 position the cable sleeve 6, and the elastic filler 52 buffers the external impact on the cable, the optical fiber is protected by the optical fiber sleeve 8, and the protective hose 9 cooperates with the limit frame 10 to position and support the fiber core 11, thereby improving the overall impact resistance of the cable.

[0026] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0027] 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. An optical fiber composite wire and cable with a high temperature resistant structure, comprising an outer protective layer (1), characterized in that: An armor layer (2) is arranged on the inner side of the outer protective layer (1), a fireproof layer (3) is arranged on the inner side of the armor layer (2), an outer supporting layer (4) is arranged on the inner side of the fireproof layer (3), an inner supporting layer (5) is arranged on the inner side of the outer supporting layer (4), a cable sleeve (6) is arranged on the outer side of the inner supporting layer (5), a plurality of the cable sleeves (6) are arranged in a ring array, a cable core (7) is arranged on the inner side of the inner supporting layer (5), an optical fiber sleeve (8) is arranged on the inner side of the inner supporting layer (5), a protective hose (9) is arranged on the inner side of the optical fiber sleeve (8), and a limiting frame (10) and an optical fiber core (11) are arranged on the inner side of the protective hose (9).

2. The optical fiber composite wire and cable with a high temperature resistant structure according to claim 1, characterized in that: The outer protective layer (1) is made of cross-linked polyethylene and is in close contact with the outer side of the armor layer (2). The armor layer (2) is in close contact with the outer side of the fireproof layer (3). The fireproof layer (3) is made of inorganic magnesium oxide material.

3. The optical fiber composite wire and cable with a high temperature resistant structure according to claim 1, characterized in that: The outer side of the outer supporting layer (4) and the inner side of the fireproof layer (3) are tightly fitted, and the inner side of the outer supporting layer (4) is provided with outer positioning blocks (41) in a ring array, and the outer supporting layer (4) and the outer positioning blocks (41) are integrally formed.

4. The optical fiber composite wire and cable with a high temperature resistant structure according to claim 1, characterized in that: The outer side of the inner supporting layer (5) is provided with inner positioning blocks (51) in a ring array, the inner positioning blocks (51) and the inner supporting layer (5) are integrally formed, and are mutually adapted with the outer positioning blocks (41), and are tightly fitted with the outer side of the cable sleeve (6), and the outer side of the cable sleeve (6) is provided with an elastic filler (52) between the inner supporting layer (5) and the outer supporting layer (4).

5. The optical fiber composite wire and cable with a high temperature resistant structure according to claim 1, characterized in that: The cable sheath (6) comprises a protective layer (61), a shielding layer (62) is arranged on the inner side of the protective layer (61), an insulating layer (63) is arranged on the inner side of the shielding layer (62), and the insulating layer (63) is tightly fitted to the outer side of the cable core (7).

6. The optical fiber composite wire and cable with a high temperature resistant structure according to claim 1, characterized in that: The outer side of the optical fiber sleeve (8) and the inner side of the inner supporting layer (5) are in close contact with each other, and the inner side of the optical fiber sleeve (8) and the outer side of the protective hose (9) are in close contact with each other.

7. The optical fiber composite wire and cable with a high temperature resistant structure according to claim 1, characterized in that: The limiting frame (10) is fixedly connected to the inner side of the protective hose (9), and the fiber core (11) and the inner side of the protective hose (9) and the outer side of the limiting frame (10) are mutually adapted.

Images