CN211907066U

CN211907066U - Optical fiber composite mineral substance insulated flexible fire-resistant cable

Info

Publication number: CN211907066U
Application number: CN202020174210.3U
Authority: CN
Inventors: 郑连元; 姚恒斌; 齐宏文; 胡士来; 何正寅
Original assignee: Yangzhou Shuguang Cable Co Ltd
Current assignee: Yangzhou Shuguang Cable Co Ltd
Priority date: 2020-02-14
Filing date: 2020-02-14
Publication date: 2020-11-10
Anticipated expiration: 2030-02-14

Abstract

The utility model discloses an optical fiber composite mineral substance insulated flexible fire-resistant cable, which sequentially comprises an outer protective layer, a first metal protective layer, an isolation layer and a belting layer from outside to inside, wherein the belting layer is internally provided with an optical unit and an electric unit; the optical unit comprises a nonmetal protective layer, a second metal protective layer, a tight sleeve layer and an optical fiber in sequence from outside to inside; the electric unit comprises an insulating layer, a fire-resistant layer and a conductor from outside to inside in sequence. The optical fiber composite mineral substance insulated flexible fire-resistant cable has the advantages of photoelectric composition, compact structure, flame retardance, fire resistance, water resistance, impact resistance, environmental protection and the like; the laying can be realized by pipelines, overhead, direct burial and the like.

Description

Optical fiber composite mineral substance insulated flexible fire-resistant cable

Technical Field

The utility model relates to an insulating flexible fire resisting cable of compound mineral substance of optic fibre belongs to electric power and communication transmission technical field.

Background

According to the recent fire statistics in China, the annual average occurrence frequency of electrical fires accounts for 27% of the annual average total occurrence frequency of the fire, accounts for 80% of the annual total occurrence frequency of the fire with a large weight, is the first cause of various fires, and the loss accounts for 53% of the total loss of the fire, while the annual occurrence frequency of the electrical fires in developed countries accounts for 8% -13% of the total occurrence frequency of the fire. With the higher and higher requirements of China on the emergency guarantee of electric power and communication in electric power and communication transmission lines with key requirements, life lines for guaranteeing the operation of important facilities and the combing and scattering of personnel are fire-resistant cables and optical cables for electric power and communication transmission; however, the existing fire-resistant cable and the existing fire-resistant optical cable are generally laid respectively and integrated, have high line cost and certain fire-resistant function, but cannot guarantee the emergency guarantee of electric power and communication when flame burns at certain temperature and time due to lower fire-resistant grade and poor water and impact resistance.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model discloses a solve above-mentioned defect and not enough that exist among the prior art, provide a flexible fire resisting cable of compound mineral substance insulation of optic fibre of advantages such as photoelectricity is compound, compact structure, fire-retardant, fire-resistant, water-fast, shock-resistant, environmental protection.

The technical scheme is as follows: an optical fiber composite mineral substance insulated flexible fire-resistant cable sequentially comprises an outer protective layer, a first metal protective layer, an isolation layer and a belting layer from outside to inside, wherein an optical unit and an electrical unit are arranged in the belting layer; the optical unit comprises a nonmetal protective layer, a second metal protective layer, a tight sleeve layer and an optical fiber in sequence from outside to inside; the electric unit comprises an insulating layer, a fire-resistant layer and a conductor from outside to inside in sequence.

Furthermore, the tape layer is also provided with a filler, and the optical units and the filler are positioned in the tape layer and filled in gaps among the electrical units.

Furthermore, the electric unit has a plurality of, and a plurality of electric units are the ring and arrange.

Further, there are 4 electrical units and 1 optical unit in the strapping layer.

Furthermore, the non-metal protective layer of the optical unit is low-smoke halogen-free flame-retardant polyolefin.

Further, the second metal protection layer of the optical unit is a corrugated stainless steel pipe.

Further, the tight sleeve layer of the optical unit is low-smoke halogen-free flame-retardant polyolefin.

Further, the optical fiber of the light unit is a g.657 optical fiber.

Further, the insulating layer of the electrical unit is radiation cross-linked polyethylene.

Further, the refractory layer of the electrical unit is a calcined mica tape.

Further, the conductor of the electrical unit is copper.

Further, the outer protective layer is low-smoke halogen-free flame-retardant polyolefin.

Further, the first metal protection layer is a corrugated copper pipe.

Further, the isolation layer is low-smoke halogen-free flame-retardant polyolefin.

Further, the wrapping tape layer is a halogen-free glass fiber tape.

Further, the filler is an inorganic paper rope.

Has the advantages that: the utility model discloses an insulating flexible fire resisting cable of compound mineral substance of optic fibre is applicable to public places fire control such as high-rise building, market, airport, subway, cinema, school, hospital, the higher electric power of fire prevention safety and communication transmission line. The optical fiber composite mineral substance insulated flexible fire-resistant cable has the advantages of photoelectric composition, compact structure, flame retardance, fire resistance, water resistance, impact resistance, environmental protection and the like; the laying can be realized by pipelines, overhead, direct burial and the like.

Drawings

Fig. 1 is a schematic cross-sectional view of a cable.

Detailed Description

Reference numerals: 1, an outer protective layer; 2 a first metal passivation layer; 3, an isolation layer; 4, wrapping a belt layer; 5 a filler; 6 a light unit; 7, a non-metal protective layer; 8 a second metal protective layer; 9 a tight-sleeve layer; 10 an optical fiber; 11 an electrical unit; 12 an insulating layer; 13 a refractory layer; 14 conductors.

The invention will be further described with reference to specific embodiments. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1, the utility model provides an optical fiber composite mineral substance insulated flexible fire-resistant cable, which comprises an outer protective layer 1, a first metal protective layer 2, an isolation layer 3 and a belting layer 4 from outside to inside in sequence, wherein the belting layer 4 is provided with an optical unit 6 and an electrical unit 11; the optical unit 6 sequentially comprises a nonmetal protective layer 7, a second metal protective layer 8, a tight sleeve layer 9 and an optical fiber 10 from outside to inside; the electric unit 11 comprises an insulating layer 12, a fire-resistant layer 13 and a conductor 14 in sequence from outside to inside; the belting layer 4 is also provided with a filler 5, and the light units 6 and the filler 5 are positioned in the belting layer 4 and filled in gaps among the electric units 11.

The number of the optical fiber cores is 4-24; when the optical fiber is used, the optical fiber core number can be adjusted to meet the communication transmission requirement of a user. The number of optical fiber cores in the embodiment is 4; the light unit outer diameter is 4.0 mm. The cross section of the conductor is 1.5-1000 mm²(ii) a When the device is used, the cross section of the conductor can be adjusted to meet the requirements of users on the power transmission shutoff quantity. Example 185mm conductor section²(ii) a The outer diameter of the electric unit is 20.1 mm. The isolation layer is low smoke zero halogen flame retardant polyolefin with the thickness of 1.6 mm. The armor layer is a corrugated copper pipe, and the thickness is 0.6 mm. The outer sheath is low-smoke halogen-free flame-retardant polyolefin with the thickness of1.8mm and an outer diameter of 60 mm.

This novel insulating flexible fire resisting cable of compound mineral substance of optic fibre has following advantage:

1. the selection of the number of the optical fiber cores is large: the number of the optical fiber cores is 4-24; when the optical fiber is used, the optical fiber core number can be adjusted to meet the communication transmission requirement of a user.

2. The section of the conductor is selected to be large: the cross section of the conductor is 1.5-1000 mm 2; when the device is used, the cross section of the conductor can be adjusted to meet the requirements of users on the power transmission shutoff quantity.

3. The fire resistance grade is high: can resist fire for 180min at 950-1000 ℃, and has water resistance and impact resistance.

4. The installation and the laying are simple and convenient.

5. The service life is long: the service life can reach 30-40 years.

Although the invention has been shown and described with respect to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention as defined in the following claims.

Claims

1. An optical fiber composite mineral substance insulated flexible fire-resistant cable is characterized by sequentially comprising an outer protective layer, a first metal protective layer, an isolation layer and a belting layer from outside to inside, wherein an optical unit and an electrical unit are arranged in the belting layer; the optical unit comprises a nonmetal protective layer, a second metal protective layer, a tight sleeve layer and an optical fiber in sequence from outside to inside; the electric unit comprises an insulating layer, a fire-resistant layer and a conductor from outside to inside in sequence.

2. The optical fiber composite mineral insulated flexible fire-resistant cable according to claim 1, wherein the tape layer further comprises a filler, and the optical units and the filler are located in the tape layer and filled in gaps between the electrical units.

3. The optical fiber composite mineral insulation flexible fire resistant cable according to claim 1, wherein the electrical unit has a plurality of electrical units arranged in a circular ring.

4. The optical fiber composite mineral insulation flexible fire resistant cable according to claim 1, wherein there are 4 electrical units and 1 optical unit in the tape layer.

5. The optical fiber composite mineral insulated flexible fire resistant cable according to claim 1, wherein: the non-metal protective layer of the optical unit is low-smoke halogen-free flame-retardant polyolefin; the second metal protective layer of the optical unit is a corrugated stainless steel pipe; the tight sleeve layer of the optical unit is low-smoke halogen-free flame-retardant polyolefin.

6. The optical fiber composite mineral insulated flexible fire resistant cable according to claim 1, wherein: the optical fiber of the optical unit is a G.657 optical fiber.

7. The optical fiber composite mineral insulated flexible fire resistant cable according to claim 1, wherein: the insulating layer of the electric unit is irradiation cross-linked polyethylene; the fire-resistant layer of the electric unit is a calcined mica tape; the conductors of the electrical unit are copper.

8. The optical fiber composite mineral insulated flexible fire resistant cable according to claim 1, wherein: the outer protective layer is low-smoke halogen-free flame-retardant polyolefin; the first metal protection layer is a corrugated copper pipe.

9. The optical fiber composite mineral insulated flexible fire resistant cable according to claim 1, wherein: the isolation layer is low-smoke halogen-free flame-retardant polyolefin; the wrapping tape layer is a halogen-free glass fiber tape.

10. The optical fiber composite mineral insulated flexible fire resistant cable according to claim 2, wherein: the filler is an inorganic paper rope.