Photoelectric composite fireproof bifurcated cable

Abstract

The utility model discloses a photoelectric composite fireproof bifurcated cable which comprises a braid layer and a cable core from outside to inside. The cable core comprises an optical fiber group, a control wire core group and a shielding wire core group; the optical fiber group comprises a reinforcing piece, a plurality of optical fibers, a waterproof layer, a protective layer and a first outer fireproof layer from inside to outside; the control wire core group comprises a plurality of control wire cores and a second outer fireproof layer from inside to outside; the shielding wire core group comprises a plurality of shielding wire cores and a third outer fireproof layer from inside to outside; one end of the cable is bifurcated, at least one of the optical fiber group, the control wire core group and the shielding wire core group is used as a branch cable core, a sleeve is arranged outside the braid layer at the bifurcated part, and the braid layer is bifurcated and wraps the branch cable core after the cable is bifurcated. According to the utility model, a photoelectric composite structure and a one-wire multi-joint connection mode are adopted, so that the optical fiber, the control wire core and the shielding wire core can be respectively connected with different devices through the branching ends, the problems of many connecting wires and complex circuits of an electrical system are solved, and the installation and maintenance of the devices are facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of composite cables, in particular to a photoelectric composite fireproof bifurcated cable. Background Art

[0002] At present, the functions of electrical equipment control systems are increasing, involving the transmission of video, audio, power, signals, etc., which leads to an increase in the number of connecting wires required, making wiring difficult and prone to entanglement, and increasing the workload when installing equipment. The routes of electrical equipment control systems are complex, and problems such as short circuits are likely to cause fires, so a multifunctional composite bifurcated fireproof cable is needed. Utility Model Content

[0003] The purpose of the utility model is to provide a photoelectric composite fireproof bifurcated cable, which is used to solve at least one aspect of the technical problems mentioned in the background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A photoelectric composite fireproof bifurcated cable, comprising a braided layer and a cable core from the outside to the inside; the cable core comprises an optical fiber group, a control wire core group, and a shielding wire core group;

[0006] The optical fiber group includes a reinforcement member, a plurality of optical fibers, a water-blocking layer, a protective layer, and a first outer fireproof layer from the inside to the outside;

[0007] The control core group includes a plurality of control cores and a second outer fireproof layer from the inside to the outside; the control core includes a first conductor, a first inner fireproof layer, and a first insulating layer from the inside to the outside;

[0008] The shielded wire core group includes a plurality of shielded wire cores and a third outer fireproof layer from the inside to the outside; the shielded wire core includes a second conductor, a second inner fireproof layer, a second insulating layer, and a shielding layer from the inside to the outside;

[0009] One end of the cable is forked, with at least one of the optical fiber group, the control wire core group, and the shielding wire core group as a branch cable core. A sleeve is arranged outside the braided layer at the fork. After the cable is forked, the braided layer forks and wraps the branch cable core.

[0010] Furthermore, the braided layer is made of insulating fibers.

[0011] Furthermore, the reinforcement member is a steel wire rope.

[0012] Furthermore, the internal space of the optical fiber is filled with water-blocking grease.

[0013] Furthermore, the water-blocking layer is a water-blocking tape layer.

[0014] Furthermore, the protective layer is a steel belt layer.

[0015] Furthermore, the first outer fireproof layer, the second outer fireproof layer and the third outer fireproof layer are all two layers of glass fiber tape and extruded with a layer of low-smoke halogen-free flame-retardant polyolefin.

[0016] Furthermore, the first conductor and the second conductor are both Category 5 copper conductors.

[0017] Furthermore, the first inner fireproof layer and the second inner fireproof layer are both three-in-one phlogopite tape layers.

[0018] Furthermore, the first insulating layer and the second insulating layer are both composite insulating layers of mineral magnesium oxide powder and PVC (Polyvinylchloride).

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] 1. The utility model adopts a photoelectric composite structure and a one-line multi-connector connection method, so that the optical fiber, control line core, and shielded line core can be connected to different devices through the forked end, solving the problem of many connecting lines and complex lines in the electrical system, and facilitating the installation and maintenance of the equipment.

[0021] 2. The utility model adopts an inner and outer double-layer fireproof structure, and each branch cable core is provided with its own fireproof structure, which enhances the resistance to high temperature and flame and improves the ability of the equipment to cope with emergencies.

[0022] 3. The outer fireproof layer of the utility model adopts two layers of glass fiber tape and is extruded with a layer of low-smoke halogen-free flame-retardant polyolefin, which is safer and more environmentally friendly. It produces less smoke when encountering fire and almost no highly toxic gas called halogen. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0024] Figure 1 It is a structural schematic diagram of a photoelectric composite fireproof bifurcated cable;

[0025] Figure 2 The figure is a schematic diagram of the structure of the bifurcation of a photoelectric composite fireproof bifurcated cable.

[0026] In the figure: 100, reinforcement; 110, optical fiber; 120, water-blocking layer; 130, protective layer; 140, first outer fireproof layer; 150, first conductor; 160, first inner fireproof layer; 170, first insulating layer; 180, second outer fireproof layer; 190, second conductor; 200, second inner fireproof layer; 210, second insulating layer; 220, shielding layer; 230, third outer fireproof layer; 240, braided layer; 250, sleeve. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of the utility model.

[0029] The present invention is limited only by the claims and their full scope and equivalents. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, "multiple" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] See also Figure 1-2 In the embodiment of the utility model, a photoelectric composite fireproof bifurcated cable, a photoelectric composite fireproof bifurcated cable, comprises a braided layer 240 and a cable core from the outside to the inside; the cable core comprises an optical fiber group, a control wire core group, and a shielding wire core group;

[0032] The optical fiber group includes, from the inside to the outside, a reinforcement member 100, five optical fibers 110, a water-blocking layer 120, a protective layer 130, and a first outer fireproof layer 140;

[0033] The control core group includes three control cores and a second outer fireproof layer 180 from the inside to the outside; the control core includes a first conductor 150, a first inner fireproof layer 160, and a first insulating layer 170 from the inside to the outside;

[0034] The shielded wire core group includes two shielded wire cores and a third outer fireproof layer 230 from the inside to the outside; the shielded wire core includes a second conductor 190, a second inner fireproof layer 200, a second insulating layer 210, and a shielding layer 220 from the inside to the outside;

[0035] One end of the cable is forked, with the control core group and the shielding core group as branch cable cores. A sleeve 250 is provided outside the braided layer 240 at the fork. After the cable is forked, the braided layer 240 forks and wraps the branch cable core.

[0036] Furthermore, the braided layer 240 is made of insulating fibers.

[0037] The role of the braided layer is to protect the insulation from or reduce the damage caused by various light, heat, moisture, low temperature, acid and alkali gases, etc. and external mechanical forces, ensuring the safe operation of the wire. The insulating fiber has excellent electrical and mechanical properties and obvious lightweight advantages.

[0038] Furthermore, the reinforcement member 100 is a steel wire rope, which is used to enhance the tensile strength of the optical cable and improve the mechanical properties of the optical cable.

[0039] Furthermore, the internal space of the optical fiber 110 is filled with water-blocking grease. The water-blocking grease is a viscous semi-solid substance that prevents the optical fiber from contacting the air and being corroded by moisture in the air; at the same time, it acts as a buffer to prevent the optical fiber from being affected by mechanical forces, which is an important factor in determining whether the performance of the optical cable can be stable in the long term.

[0040] Furthermore, the water-blocking layer 120 is a water-blocking tape layer. The water-blocking tape is made of polyester non-woven fabric, which can rapidly expand after absorbing water, and effectively prevent the water from further penetrating and diffusing.

[0041] Furthermore, the protective layer 130 is a steel belt layer.

[0042] Furthermore, the first outer fireproof layer 140, the second outer fireproof layer 180 and the third outer fireproof layer 230 are all two layers of glass fiber tape and extruded with a layer of low-smoke halogen-free flame-retardant polyolefin.

[0043] Low smoke halogen-free flame retardant polyolefin is a material with polyolefin as the main raw material, which is processed by adding special halogen-free non-toxic flame retardant, smoke suppressant and other additives and undergoing special processing technology. This material has excellent flame retardancy, not only has a high oxygen index, but also releases no halogen acid gas during combustion, releases very little toxic and corrosive gas, has extremely low smoke concentration, has good flame retardant effect, and is safe and environmentally friendly.

[0044] Furthermore, the first conductor 150 and the second conductor 190 are both made of Category 5 copper conductors, which are twisted together by 7 copper wires and have good flexibility, low resistance and high conductivity.

[0045] Furthermore, the first inner fireproof layer 160 and the second inner fireproof layer 200 are both three-in-one phlogopite tape layers. The three-in-one phlogopite tape is a tape product made of phlogopite paper as a base material, a carbon-free polymer film as a double-sided reinforcement material, and silicone resin. It has good insulation performance at high temperatures and can ensure that no breakdown occurs within 90 minutes in an environment with a temperature range of 750°C to 950°C and a voltage range of 600V to 1000V. It also has the characteristics of acid and alkali resistance, corona resistance, and radiation resistance.

[0046] Furthermore, the first insulating layer 170 and the second insulating layer 210 are both composite insulating layers of mineral magnesium oxide powder and PVC. Magnesium oxide has a high fire-resistant insulation performance. When added to PVC, it can not only improve the insulation performance of PVC, but also enhance its flame retardant performance and good stability.

[0047] In this embodiment, the shielding layer adopts copper wire braiding shielding with a braiding density of more than 85%.

[0048] In this embodiment, the sleeve adopts a heat shrink sleeve, which is mainly made of polyolefin material. The outer layer is made of high-quality soft cross-linked polyolefin material and the inner layer is composited with hot melt adhesive. It has the advantages of insulation and corrosion resistance, wear resistance, waterproof sealing and high adhesion.

[0049] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. A photoelectric composite fireproof bifurcated cable, characterized in that: From the outside to the inside, it includes a braided layer (240) and a cable core; the cable core includes an optical fiber group, a control wire core group, and a shielding wire core group; The optical fiber group comprises, from the inside to the outside, a reinforcement member (100), a plurality of optical fibers (110), a water-blocking layer (120), a protective layer (130), and a first outer fireproof layer (140); The control wire core group includes, from the inside to the outside, a plurality of control wire cores and a second outer fireproof layer (180); the control wire core includes, from the inside to the outside, a first conductor (150), a first inner fireproof layer (160), and a first insulating layer (170); The shielded wire core group includes, from the inside to the outside, a plurality of shielded wire cores and a third outer fireproof layer (230); the shielded wire core includes, from the inside to the outside, a second conductor (190), a second inner fireproof layer (200), a second insulating layer (210), and a shielding layer (220); One end of the cable is forked, with at least one of the optical fiber group, the control wire core group, and the shielding wire core group as a branch cable core, and a sleeve (250) is arranged outside the braided layer (240) at the fork. After the cable is forked, the braided layer (240) forks and wraps the branch cable core.

2. The photoelectric composite fireproof bifurcated cable according to claim 1, characterized in that: The braided layer (240) is braided with insulating fibers.

3. The photoelectric composite fireproof bifurcated cable according to claim 1, characterized in that: The reinforcement member (100) is a steel wire rope.

4. The photoelectric composite fireproof bifurcated cable according to claim 1, characterized in that: The internal space of the optical fiber (110) is filled with water-blocking grease.

5. The optoelectronic composite fireproof bifurcated cable according to claim 1, characterized in that: The water-blocking layer (120) is a water-blocking tape layer.

6. The photoelectric composite fireproof bifurcated cable according to claim 1, characterized in that: The protective layer (130) is a steel belt layer.

7. The photoelectric composite fireproof bifurcated cable according to claim 1, characterized in that: The first outer fireproof layer (140), the second outer fireproof layer (180) and the third outer fireproof layer (230) are all two layers of glass fiber tape and extruded with a layer of low-smoke halogen-free flame-retardant polyolefin.

8. The optoelectronic composite fireproof bifurcated cable according to claim 1, characterized in that: The first conductor (150) and the second conductor (190) are both made of Category 5 copper conductors.

9. The optoelectronic composite fireproof bifurcated cable according to claim 1, characterized in that: The first inner fireproof layer (160) and the second inner fireproof layer (200) are both three-in-one phlogopite mica tape layers.

10. The optoelectronic composite fireproof bifurcated cable according to claim 1, characterized in that: The first insulating layer (170) and the second insulating layer (210) are both composite insulating layers of mineral magnesium oxide powder and PVC.

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