CN210429400U

CN210429400U - Multifunctional combined fire-resistant optical cable

Info

Publication number: CN210429400U
Application number: CN201921607191.2U
Authority: CN
Inventors: 李宗乐; 谷庆军; 魏丽霞; 孙华荣
Original assignee: Shandong Yanggu Wanlihang Cable Co Ltd
Current assignee: Shandong Yanggu Wanlihang Cable Co Ltd
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2020-04-28
Anticipated expiration: 2029-09-25

Abstract

The utility model provides a many function combination formula fire-resistant optical cable, including oversheath layer, inner sheath, cable core, the cable core includes two power cable sinle silks, two control cable sinle silks and a balance pipe, power cable sinle silk and control cable sinle silk all include a conductor and cladding insulating layer and shielding layer in the conductor outside, are provided with first filling layer between insulating layer and the conductor, and the outside of shielding layer is provided with the second filling layer, and the outside of second filling layer is provided with the polyethylene film area around covering, inner sheath, third filling layer, aluminium foil around covering, fire-resistant protection layer, armor and oversheath layer, has the axial kerve on the fire-resistant protection layer, every corner both sides of inner sheath are provided with a confrontation brace, and the cross sectional shape of antithetical couplet brace is triangle-shaped and is provided with a steel wire at its geometric center. The utility model relates to a rationally, simple structure, the function is many, intensity is higher relatively, and anti-interference and shielding are effectual, are fit for extensive the popularization.

Description

Multifunctional combined fire-resistant optical cable

Technical Field

The utility model belongs to the technical field of power cable, especially, relate to a fire-resistant optical cable of many function combination formula.

Background

In recent years, the country advocates the resource-saving socialization development, and the layout of wires and cables from national power grids to factories and buildings is also improved in a compact and energy-saving way. In enterprises, some equipment control and monitoring loops not only need signal control, but also often need a power cable to realize electric energy transmission, and the cable can play a role in inhibiting electromagnetic interference generated by electrified current. The power system and the control system need to be repeatedly wired. In this process, not only manpower but also a lot of materials are wasted, and the composite cable is an important method for solving the problem.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the technical problem that foretell cable exists, provide a reasonable in design, simple structure, intensity are higher and tensile strength is higher fire-resistant optical cable of many function combination formula.

In order to achieve the above object, the technical solution adopted by the present invention is that, the multifunctional combined fire-resistant optical cable provided by the present invention comprises an outer sheath layer, an armor layer, an inner sheath, a filling layer and a cable core, wherein the cable core comprises two power cable cores and two control cable cores, the power cable cores and the control cable cores are arranged at intervals and symmetrically, and a balance pipe is arranged between the power cable cores and the control cable cores, each of the power cable cores and the control cable cores comprises a conductor, and an insulating layer and a shielding layer coated outside the conductor, a first filling layer is arranged between the insulating layer and the conductor, a second filling layer is arranged outside the shielding layer, a polyethylene film tape wrapping layer, an inner sheath, a third filling layer, an aluminum foil wrapping layer, a fire-resistant protective layer, an armor layer and an outer sheath layer are sequentially arranged outside the second filling layer, a plurality of axial grooves are uniformly distributed on the outer side surface of the fire-resistant protective layer, the cable comprises an inner sheath and is characterized in that the outer contour of the inner sheath is square, the inner contour of the inner sheath is a curve matched with a cable core, four corners of the inner sheath are in transition through round corners, a counter brace is arranged on two sides of each corner of the inner sheath, the cross section of each counter brace is triangular, and a steel wire is arranged at the geometric center of the counter brace.

Preferably, the two power cable cores and the two control cable cores are respectively opposite to one corner of the inner sheath.

Preferably, the filler of the filling layer is hemp rope, glass fiber rope, polypropylene mesh belt or low-smoke halogen-free flame-retardant rope.

Compared with the prior art, the utility model discloses an advantage lies in with positive effect:

the utility model provides a multifunctional combined fire-resistant optical cable, which integrates the power cable core and the control cable core into a whole, thereby being beneficial to reducing the cable cost; the strength of the cable is improved by adding the inner sheath, the difficulty of laying and erecting the cable is reduced, and the fatigue limit of the cable is improved by adding the axial pull groove; utilize anti brace and steel wire in order improving the anti ductility of cable, in addition the structure of the stranded of the conductor core and cable core, effectively prolonged the life of cable. The utility model relates to a rationally, simple structure, the function is many, anti-interference and shielding are effectual, are fit for extensive the popularization.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic cross-sectional view of a multifunctional combined fire-resistant optical cable according to an embodiment;

in the above figures, 1, an outer sheath layer; 2. an armor layer; 3. an aluminum foil wrapping layer; 4. an inner sheath; 5. a filling layer; 51. a first filling layer; 52. a second filling layer; 53. a third filling layer; 54. a fourth filling layer; 6. a cable core; 61. a power cable core; 62. controlling the cable core; 63. an insulating layer; 64. a shielding layer; 65. a balance tube; 7. a refractory protective layer; 71. axially drawing a groove; 8. the polyethylene film is wrapped with a covering; 9. anti-bracing; 10. a steel wire.

Detailed Description

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left", "right", "inner" and "outer" will be used hereinafter to refer only to the upper, lower, left, right, inner and outer directions of the drawings, and shall not limit the structure.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the present invention is not limited to the limitations of the specific embodiments of the present disclosure.

In an embodiment, as shown in fig. 1, the multifunctional combined fire-resistant optical cable provided by the present invention includes an outer sheath layer 1, an armor layer 2, an inner sheath 4, a filling layer 5 and a cable core 6, where the outer sheath layer 1 has a wear-resistant protection function; the armor layer 2 has shielding and anti-interference functions, and the filler of the filling layer 5 can ensure the roundness of the cable. The utility model discloses the focus is to 6 structure improvement of cable core to increased the structure that improves cable strength, nevertheless not lost the pliability of cable, only relative strength promotes to some extent.

Specifically, the cable core 6 provided by the present invention comprises two power cable cores 61 and two control cable cores 62, the power cable cores 61 and the control cable cores 62 are arranged symmetrically at intervals and a balance tube 65 is arranged in the middle, each of the power cable cores 61 and the control cable cores 62 comprises a conductor, and an insulating layer 63 and a shielding layer 64 coated outside the conductor, a first filling layer 51 is arranged between the insulating layer 63 and the conductor, a second filling layer 52 is arranged outside the shielding layer, a polyethylene film tape wrapping layer 8, an inner sheath 4, a third filling layer 53, an aluminum foil wrapping layer 3, a fire-resistant protective layer 7, an armor layer 2 and an outer sheath layer 1 are sequentially arranged outside the second filling layer 52, a plurality of axial pull grooves 71 are uniformly distributed on the outer side surface of the fire-resistant protective layer 7, the outer contour of the inner sheath 4 is square and the inner contour is a curve matched with the cable core, four corners of the inner sheath 4 are in rounded transition, a counter brace 9 is arranged on two sides of each corner of the inner sheath 4, the cross section of the counter brace 10 is triangular, and a steel wire 10 is arranged at the geometric center of the cross section of the counter brace 10. The power cable cores 61 and the control cable cores 62 are symmetrically arranged at intervals, so that effective connection with electrical equipment is facilitated, the adaptability is high, the balance pipes 65 can balance the arrangement regularity of the power cable cores and the control cable cores, and the stress stability is high; the axial pull groove 71 on the fire-resistant protective layer 7 can ensure that the fire-resistant protective layer has certain flexibility, improve the fatigue limit of the fire-resistant protective layer 7 and be beneficial to exerting the cable protection function of the fire-resistant protective layer to the maximum extent; the insulating layer 63 and the shielding layer 64 are used for shielding the inner layer and are matched with the shielding effects of the aluminum foil wrapping layer 3 and the outer layer of the armor layer 2 to ensure the anti-interference effect of the cable; the polyethylene film tape wrapping layer 8 has a shaping effect and a flame retardant effect; the inner sheath 4 of the device has the reinforcing effect, particularly, the bending strength and flexibility ratio of the cable is increased, and meanwhile, the service life of the cable is effectively prolonged.

Furthermore, the inner sheath 4 is mainly made of a thermal shrinkage material and coated outside the polyethylene film tape wrapping layer 8 by thermal shrinkage, corners of the inner sheath adopt fillet transition to facilitate reducing the radial width of the cable, and meanwhile, the reinforcing effect of the inner sheath 4 can be better exerted by the seam filling and shaping effects of the second filling layer 52 and the third filling layer 53; the device can increase the tensile strength of the cable in the length direction of the wire core by utilizing the combined action of the anti-bracing pieces 9 and the steel wires 10, and the tightness of the anti-bracing pieces and the steel wires in the fourth filling layer can be improved by adopting flame-retardant polyolefin materials for the anti-bracing pieces 9; the anti-bracing strips 9 also serve to exert a certain amount of compression force on the corners of the inner sheath during the filling process, preventing deflection of the inner sheath during the shaping of the material outside the fourth filling layer, thus ensuring the effectiveness of the construction of the device.

For the bulk strength of improvement cable, the utility model provides a two power cable sinle silks 61 and two control cable sinle silks 62 are relative with a corner of inner sheath 4 respectively. Because the effort scope that the sinle silk applyed to inner sheath 4 is in inner sheath corner region basically, and the corner part of inner sheath 4 is the region that the compressive strength degree is the biggest again, like this, just make the equilibrium degree of the material within inner sheath 4 better, and then be favorable to improving the bulk strength of cable, effectively prolong the life of cable.

Further, the utility model provides a filler of filling layer 5 is hemp rope, the glass fiber rope, the netted area of polypropylene or the fire-retardant rope of low smoke and zero halogen, select according to manufacturing cost, this device mainly adopts the fire-retardant rope of low smoke and zero halogen, the design is the fire resisting cable who need not mica and mineral filling structure, can form the fine and close carbon-layer of one deck on the sheath surface under the flame condition, when effectively preventing the heat invasion, water-fast drenching and mechanical striking, and give the cable high fire-resistant, characteristics such as low smoke and zero halogen during the burning, can realize the miniaturation, the lightweight.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims

1. A multifunctional combined fire-resistant optical cable comprises an outer sheath layer, an armor layer, an inner sheath, a filling layer and a cable core, and is characterized in that the cable core comprises two power cable cores and two control cable cores, the power cable cores and the control cable cores are arranged symmetrically at intervals, a balance pipe is arranged between the power cable cores and the control cable cores, the power cable cores and the control cable cores respectively comprise a conductor, an insulating layer and a shielding layer, the insulating layer and the shielding layer are coated outside the conductor, a first filling layer is arranged between the insulating layer and the conductor, a second filling layer is arranged outside the shielding layer, a polyethylene film tape is sequentially arranged outside the second filling layer, the inner sheath, a third filling layer, an aluminum foil tape, a fire-resistant protective layer, the armor layer and the outer sheath layer, and a plurality of axial pull grooves are uniformly distributed on the outer side surface of the fire-resistant protective layer, the cable comprises an inner sheath and is characterized in that the outer contour of the inner sheath is square, the inner contour of the inner sheath is a curve matched with a cable core, four corners of the inner sheath are in transition through round corners, a counter brace is arranged on two sides of each corner of the inner sheath, the cross section of each counter brace is triangular, and a steel wire is arranged at the geometric center of the counter brace.

2. The multifunctional combined fire-resistant optical cable according to claim 1, wherein the two power cable cores and the two control cable cores are respectively opposite to one corner of the inner sheath.

3. The multifunctional combined fire-resistant optical cable according to claim 2, wherein the filler of the filling layer is hemp rope, glass fiber rope, polypropylene mesh tape or low-smoke halogen-free flame-retardant rope.