CN218730059U

CN218730059U - Mineral insulation aluminum sheath photoelectric composite fireproof cable

Info

Publication number: CN218730059U
Application number: CN202222910132.0U
Authority: CN
Inventors: 张道勇; 张道宁; 房继坤; 虞贵芳; 俞国路; 张勇
Original assignee: Shandong Yanggu Haohui Cable Co ltd
Current assignee: Shandong Yanggu Haohui Cable Co ltd
Priority date: 2022-11-02
Filing date: 2022-11-02
Publication date: 2023-03-24
Anticipated expiration: 2032-11-02

Abstract

The utility model discloses a mineral insulation aluminum sheath photoelectric composite fireproof cable, including interior sandwich layer, the surface cladding of interior sandwich layer has outer protective layer, interior sandwich layer includes the stranding and winds the covering and be located the stranding conductor and the optic fibre around covering inner chamber, the stranding is filled around the inner chamber packing of covering, the surface cladding of conductor has insulating flame retardant coating, the surface cladding of optic fibre has tight jacket layer, outer protective layer include aluminium strip restrictive coating and with the fire-retardant isolation layer of the fixed surface of aluminium strip restrictive coating being connected, the surface cladding of fire-retardant isolation layer has the fire prevention isolation layer, the surface cladding of fire prevention isolation layer has outer inoxidizing coating, the surface equidistance of fire-retardant isolation layer is provided with a plurality of profile of teeth archs, the utility model relates to a mineral insulation aluminum sheath photoelectric composite fireproof cable, improve this mineral insulation aluminum sheath photoelectric composite fireproof cable's the oxygen that separates, waterproof, prevent fires, performances such as signal transmission, set up a plurality of profile of teeth simultaneously outside fire-retardant isolation layer, be favorable to improving the bulk strength of this cable.

Description

Mineral insulation aluminum sheath photoelectric composite fireproof cable

Technical Field

The utility model relates to a composite cable technical field specifically is a mineral insulation aluminum sheath photoelectric composite fireproof cable.

Background

With the continuous development of information technology, optical fiber communication plays a crucial role in the whole communication industry and becomes a foundation of modern communication, wherein photoelectric composite cables are more and more widely used in the communication industry, the photoelectric composite cables are suitable for being used as transmission lines in a broadband access network system and are a novel access mode, optical fibers and transmission copper wires are integrated, and the problems of broadband access, equipment power utilization and signal transmission can be solved.

The existing photoelectric composite cable also generates some new requirements in the using process:

(1) The general fire-resistant optical fiber composite low-voltage cable can not meet the corresponding requirements in certain fire-fighting occasions, and in the fire-fighting state, along with the rise of the temperature of a cable core, the direct-current resistance of a conductor is increased, the optical fiber loss is increased, the electric power and optical signal data transmission capacity is greatly reduced, and even the electric power and optical signal data transmission function is lost;

(2) Because the composite cable compounds the conductor and the optical fiber, the optical fiber is easy to damage after being bent, so that the composite cable has higher requirements on the bending resistance of the cable, and the conductor is compounded in the cable core, so that certain short circuit risks exist, the temperature can rise after the conductor is in short circuit, the conventional composite cable lacks a temperature sensing and color changing function, and the heating part cannot be marked for warning, so that certain potential safety hazards are brought.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a mineral insulated aluminum sheath photoelectric composite fireproof cable, with the general fire-resistant type optic fibre composite low tension cable who proposes in solving above-mentioned background art, can not reach corresponding requirement in some fire control occasion, composite cable is under the state of catching fire, along with the temperature rising of cable core, the conductor direct current resistance increases, optical fiber loss increases, greatly reduced electric power and light signal data transmission ability, lose electric power and light signal data transmission function even and because composite cable has compound conductor and optic fibre, optic fibre is damaged easily after buckling, consequently, anti buckling performance to the cable has had higher requirement, and the inside of cable core is owing to compound the conductor, consequently, there is the risk of certain short circuit, conductor short circuit back temperature can rise, and current composite cable lacks the function of discolouring, can't mark the warning to the temperature sensing position, thereby bring the problem of certain potential safety hazard.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a mineral insulation aluminum sheath photoelectric composite fireproof cable, includes interior sandwich layer, the surface cladding of interior sandwich layer has outer protective layer, interior sandwich layer includes the finished cable around the covering and is located finished cable conductor and optic fibre around the covering inner chamber, conductor and optic fibre transposition each other are connected, finished cable has the filling layer around the inner chamber packing of covering, the surface cladding of conductor has insulating flame retardant coating, the surface cladding of optic fibre has tight covering, outer protective layer include aluminium strip restrictive coating and with the fire-retardant isolation layer of the fixed surface connection of aluminium strip restrictive coating, the surface cladding of fire-retardant isolation layer has fire-retardant isolation layer, the surface cladding of fire-retardant isolation layer has outer inoxidizing coating, the surface equidistance of fire-retardant isolation layer is provided with a plurality of profile of tooth archs.

Preferably, the cabling wrapping layer comprises a first mica tape and a first polyester tape, the first polyester tape is wrapped on the surface of the first mica tape, the mica tape is resistant to high temperature of 1200 ℃, and the polyester tape has an insulating and moisture-proof function.

Preferably, the insulating fire-resistant layer comprises four layers of second mica tapes, the four layers of second mica tapes are connected with each other, a second polyester tape is arranged between the second mica tape positioned on the first layer and the second mica tape positioned on the third layer, the mica tapes are resistant to high temperature of 1200 ℃, and the polyester tapes have insulating and moisture-proof functions.

Preferably, the tight-sleeved layer is a polytetrafluoroethylene raw material belt, the single-layer thickness of the polytetrafluoroethylene raw material belt is 0.01-0.20 mm, the width of the polytetrafluoroethylene raw material belt is 2.2-19.2 mm, and the thickness of the tight-sleeved layer is 0.1-0.50 mm.

Preferably, the winding layer is arranged inside the outer protective layer, and the elastic strip is wound and connected to the inner cavity of the winding layer, so that the bending resistance of the cable is improved.

Preferably, the surperficial equidistance of outer inoxidizing coating has cup jointed a plurality of temperature sensing color change rings, just the temperature sensing color change ring is made by organic heat-sensitive discoloration material, can generate heat to the cable on the one hand and warn, and on the other hand also can change the color mark to the position that generates heat, convenient investigation.

Preferably, the filling layer is a flame-retardant alkali-free glass rope, the fireproof isolation layer is made of an inorganic substance-Mg (OH) mineral mud material, the thickness of the fireproof isolation layer is 1.5 mm-1.6 mm, and the outer protective layer is made of a halogen-free flame-retardant polyolefin material.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) The mineral insulated aluminum sheath photoelectric composite fireproof cable is characterized in that an outer protective layer made of halogen-free flame-retardant polyolefin is arranged, an insulating fireproof layer and a cabling wrapping layer are arranged, the insulating fireproof layer is composed of a synthetic mica tape which can resist the temperature of 1200 ℃ and a polyester tape with insulating and moistureproof functions, and a fireproof isolation layer is wrapped on the fireproof isolation layer with tooth-shaped protrusions in an extrusion mode by adopting fireproof mud;

(2) Elastic strip is connected through the inner chamber winding on the winding layer of seting up at outer inoxidizing coating, utilizes the elastic potential energy of elastic strip to improve the bending resistance performance of cable, a plurality of temperature sensing rings that change colour have been cup jointed on the surface of outer protective layer, and the temperature sensing ring that changes colour is made by organic temperature sensing discoloring material, can the temperature sensing change colour, can generate heat to the cable on the one hand and warn, and on the other hand also can change colour the mark to the position that generates heat, convenient investigation.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a cross-sectional view of the present invention;

fig. 3 is a cross-sectional view of the inner core layer of the present invention;

FIG. 4 is a cross-sectional view of the cabled wrapping layer of the present invention;

fig. 5 is a cross-sectional view of the insulating refractory of the present invention;

fig. 6 is a cross-sectional view of the outer protective layer of the present invention.

In the figure: 1. an inner core layer; 2. an outer protective layer; 3. a cabling lapping layer; 4. a conductor; 5. an optical fiber; 6. a filling layer; 7. an insulating refractory layer; 8. a tight-fitting layer; 9. an aluminum tape jacket layer; 10. a flame retardant barrier layer; 11. a fire barrier layer; 12. an outer protective layer; 13. a tooth-shaped bulge; 14. a temperature sensing color changing ring; 15. a winding layer; 16. an elastic strip; 17. a first mica tape; 18. a first polyester tape; 19. a second polyester tape; 20. a second mica tape.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-6, the utility model provides a mineral insulation aluminum sheath photoelectric composite fireproof cable, including inner core layer 1, the surface cladding of inner core layer 1 has outer protective layer 2, inner core layer 1 includes cabled wrapping 3 and is located conductor 4 and optic fibre 5 of cabled wrapping 3 inner chamber, conductor 4 and optic fibre 5 are twisted each other and are connected for the transmission of circuit, optic fibre 5 adopts polyimide coated single mode fiber 5, optic fibre 5 is used for the transmission of communication signal; the inner cavity of the cabling wrapping layer 3 is filled with the filling layer 6, and the filling layer 6 is a flame-retardant alkali-free glass rope and has certain high-temperature resistance, so that the purpose of high-temperature resistance is realized; the surface of the conductor 4 is coated with an insulating fire-resistant layer 7, the insulating fire-resistant layer 7 is formed by lapping four layers of second mica tapes 20 which can resist the temperature of 1200 ℃ and a layer of second polyester tape 19 with the insulating and moisture-proof functions in an overlapping mode, and therefore the insulating and moisture-proof performance and the temperature resistance performance of the cable are improved; the surface of the optical fiber 5 is wrapped with a tight sleeve layer 8, the outer protective layer 2 comprises an aluminum tape sheath layer 9 and a flame-retardant isolation layer 10 fixedly connected with the surface of the aluminum tape sheath layer 9, the surface of the flame-retardant isolation layer 10 is wrapped with a fireproof isolation layer 11, the surface of the fireproof isolation layer 11 is wrapped with an outer protective layer 12, a plurality of tooth-shaped bulges 13 are equidistantly arranged on the surface of the flame-retardant isolation layer 10, the aluminum tape sheath layer 9 longitudinally wraps the inner core layer 1 in a continuous argon arc welding mode to form an outer sheath in a sealed mode, the outer sheath is waterproof and moistureproof, the plurality of tooth-shaped bulges 13 are arranged on the surface of the flame-retardant isolation layer 10, the overall strength of the cable is improved, the material is extruded by ultraviolet irradiation cross-linked polyolefin insulation material at 125 ℃, the outer sheath has the functions of isolating oxygen and preventing water and moisture, the fireproof isolation layer 11 is wrapped on the flame-retardant isolation layer 10 with the tooth-shaped bulges 13 in a squeezing mode by fireproof mud, the inorganic substance-Mg (OH) mineral mud, the outer protective layer has the flexibility as same as plastic under the room temperature condition, and can form a shell with a certain mechanical strength after being burnt at high temperature or flame, and the protective barrier can directly spray the aluminum tape sheath layer 9, the conductor 4 and the optical fiber sheath layer 5.

Referring to fig. 4, further, the cabling wrapping layer 3 includes a first mica tape 17 and a first polyester tape 18, the first polyester tape 18 is coated on the surface of the first mica tape 17, and the inner layer of the cabling wrapping layer 3 is the first polyester tape 18 coated on the outer layer of the first mica tape 17, so as to improve the insulation, moisture resistance and temperature resistance of the cable.

Referring to fig. 5, furthermore, the insulating fire-resistant layer 7 comprises four layers of second mica tapes 20, the four layers of second mica tapes 20 are connected with each other, a second polyester tape 19 is arranged between the second mica tape 20 on the first layer and the second mica tape 20 on the third layer, the insulating fire-resistant layer 7 adopts the four layers of second mica tapes 20 which can resist the temperature of 1200 ℃ and the one layer of second polyester tape 19 with the insulating and moisture-proof function to be lapped, and the insulating and moisture-proof performance and the temperature-resistant performance of the cable are improved.

Referring to fig. 3, further, the tight-buffered layer 8 is a teflon raw material tape, the single-layer thickness of the teflon raw material tape is 0.01-0.20 mm, the width of the teflon raw material tape is 2.2-19.2 mm, and the thickness of the tight-buffered layer 8 is 0.1-0.50 mm.

Referring to fig. 6, further, a winding layer 15 is disposed inside the outer protection layer 12, an elastic strip 16 is wound around an inner cavity of the winding layer 15, the elastic strip 16 is wound around an inner cavity of the winding layer 15 disposed on the outer protection layer 12, and elastic potential energy of the elastic strip 16 is utilized to improve bending resistance of the cable.

Referring to fig. 1, further, a plurality of temperature-sensitive color-changing rings 14 are sleeved on the surface of the outer protective layer 12 at equal intervals, the temperature-sensitive color-changing rings 14 are made of an organic thermosensitive color-changing material, and the temperature-sensitive color-changing rings 14 are made of the organic thermosensitive color-changing material, so that the temperature-sensitive color-changing can be performed, on one hand, the heating of the cable can be warned, and on the other hand, the color-changing marking can be performed on the heating position, and the checking is convenient.

Referring to fig. 1 and 2, further, the filling layer 6 is a flame-retardant alkali-free glass rope, the fire-retardant isolation layer 11 is made of an inorganic substance-Mg (OH) mineral mud material, the thickness of the fire-retardant isolation layer 11 is 1.5mm to 1.6mm, the outer protection layer 12 is made of a halogen-free flame-retardant polyolefin material, the filling layer 6 is a flame-retardant alkali-free glass rope and has certain high temperature resistance, so as to achieve the purpose of high temperature resistance, the heat-insulating and fire-retardant layer of the fire-retardant isolation layer 11 is wrapped on the flame-retardant isolation layer 10 with the tooth-shaped protrusions 13 by using fire-retardant mud, the composition of the heat-insulating and fire-retardant layer is inorganic substance-Mg (OH) mineral mud, the heat-retardant and fire-retardant layer has flexibility as same as plastic at room temperature, a shell with certain mechanical strength can be formed after high-temperature or flame burning, a thick barrier is formed to prevent flame from directly spraying the aluminum tape sheath layer 9, the conductor 4 and the optical fiber 5, and has a protective effect on the inner core layer 1.

When the cable is used, the conductor 4 is stranded by adopting a second copper, the resistance of the conductor 4 meets the GB/3956-2008 requirement, the insulating fire-resistant layer 7 is formed by combining four layers of second mica tapes 20 with the temperature of 1200 ℃ and one layer of second polyester tape 19 with the insulating and moisture-proof functions in an overlapping and wrapping mode, the first polyester tape 18 is wrapped on the outer layer of the first mica tape 17 as the inner layer of the cabling wrapping layer 3, so that the insulating and moisture-proof performance of the cable is improved, the optical fiber 5 is a single-mode optical fiber 5 coated with polyimide, the surface of the optical fiber 5 is wrapped with the tight sleeve layer 8, the tight sleeve layer 8 is a polytetrafluoroethylene raw material tape wrapping layer, the filling layer 6 is filled in the inner cavity of the cabling wrapping layer 3 and positioned between the conductor 4 and the conductor 4 after the stranded connection, the filling layer 6 is a flame-retardant alkali-free glass rope and has certain high-temperature resistance performance, so that the high-temperature-resistance purpose is realized, the aluminum tape sheath layer 9 is used for longitudinally wrapping the inner core layer 1 and continuously welding the inner core layer to form an argon arc, the cable has the advantages that the surface of the waterproof and moistureproof flame-retardant isolation layer 10 is provided with a plurality of tooth-shaped bulges 13, the overall strength of the cable is favorably improved, the material is extruded by ultraviolet irradiation crosslinking polyolefin insulation material at 125 ℃, the cable has the functions of oxygen isolation and water and moisture prevention, the heat-insulating and fireproof layer of the fireproof isolation layer 11 is extruded on the flame-retardant isolation layer 10 with the tooth-shaped bulges 13 by fireproof mud, the composition of the heat-insulating and fireproof layer is inorganic matter Mg (OH) mineral mud, the heat-insulating and fireproof layer has the flexibility same as that of plastic at room temperature, a shell with certain mechanical strength can be formed after high temperature or flame burning, a thick barrier is formed to prevent flame from directly spraying the aluminum tape sheath layer 9, the conductor 4 and the optical fiber 5, the inner core layer 1 is protected, and an elastic strip 16 is wound and connected in an inner cavity of a winding layer 15 arranged on the outer protection layer 12, utilize the elastic potential energy of elasticity strip 16 to improve the bending resistance performance of cable, the surface of outer protective layer 2 has cup jointed a plurality of temperature sensing color change rings 14, and temperature sensing color change ring 14 is made by organic temperature sensing color change material, can the temperature sensing change color, can warn on the one hand the cable generates heat, and on the other hand also can change color the mark to the position that generates heat, convenient investigation.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a mineral insulation aluminium sheath photoelectricity composite fireproof cable, includes inner core layer (1), its characterized in that: the surface cladding of interior sandwich layer (1) has outer protective layer (2), interior sandwich layer (1) includes that the finished cable winds covering (3) and is located finished cable conductor (4) and optic fibre (5) around covering (3) inner chamber, conductor (4) and optic fibre (5) transposition each other are connected, the finished cable has filling layer (6) around the inner chamber packing of covering (3), the surface cladding of conductor (4) has insulating flame retardant coating (7), the surface cladding of optic fibre (5) has tight jacket layer (8), outer protective layer (2) include aluminium strip restrictive coating (9) and with the fire-retardant isolation layer (10) of the fixed surface connection of aluminium strip restrictive coating (9), the surface cladding of fire-retardant isolation layer (10) has fire prevention isolation layer (11), the surface cladding of fire prevention isolation layer (11) has outer inoxidizing coating (12), the surface equidistance of fire-retardant isolation layer (10) is provided with a plurality of profile of teeth arch (13).

2. The mineral insulated aluminum sheath photoelectric composite fireproof cable of claim 1, wherein: the cabling wrapping layer (3) comprises a first mica tape (17) and a first polyester tape (18), and the first polyester tape (18) is wrapped on the surface of the first mica tape (17).

3. The mineral insulated aluminum sheathed photoelectric composite fireproof cable of claim 1, wherein: the insulating fire-resistant layer (7) comprises four layers of second mica tapes (20), the four layers of second mica tapes (20) are connected with each other, and a second polyester tape (19) is arranged between the second mica tape (20) on the first layer and the second mica tape (20) on the third layer.

4. The mineral insulated aluminum sheath photoelectric composite fireproof cable of claim 1, wherein: the tight-fit layer (8) is a polytetrafluoroethylene raw material belt, the single-layer thickness of the polytetrafluoroethylene raw material belt is 0.01-0.20 mm, the width of the polytetrafluoroethylene raw material belt is 2.2-19.2 mm, and the thickness of the tight-fit layer (8) is 0.1-0.50 mm.

5. The mineral insulated aluminum sheathed photoelectric composite fireproof cable of claim 1, wherein: the inner part of the outer protective layer (12) is provided with a winding layer (15), and the inner cavity of the winding layer (15) is wound and connected with an elastic strip (16).

6. The mineral insulated aluminum sheathed photoelectric composite fireproof cable of claim 1, wherein: the surface of the outer protective layer (12) is sleeved with a plurality of temperature sensing color changing rings (14) at equal intervals, and the temperature sensing color changing rings (14) are made of organic thermosensitive color changing materials.

7. The mineral insulated aluminum sheathed photoelectric composite fireproof cable of claim 1, wherein: the fireproof insulation layer is characterized in that the filling layer (6) is a flame-retardant alkali-free glass rope, the fireproof insulation layer (11) is made of an inorganic matter-Mg (OH) mineral mud material, the thickness of the fireproof insulation layer (11) is 1.5-1.6 mm, and the outer protective layer (12) is made of a halogen-free flame-retardant polyolefin material.