CN218547087U

CN218547087U - Anti optical cable that freezes of nonmetal center tube transposition formula

Info

Publication number: CN218547087U
Application number: CN202222697132.7U
Authority: CN
Inventors: 吴迪; 沈聪; 韩宇峰; 周珍福; 陈龙; 王梦伟; 许建国
Original assignee: Zhejiang Dongtong Optical Network Iot Technology Co ltd
Current assignee: Zhejiang Dongtong Optical Network Iot Technology Co ltd
Priority date: 2022-10-13
Filing date: 2022-10-13
Publication date: 2023-02-28
Anticipated expiration: 2032-10-13

Abstract

The utility model discloses an anti optical cable that freezes of nonmetal center tube transposition formula, including the optical cable main part, the optical cable main part includes optic fibre, fine cream, light unit TPEE coating layer, TPEE optical unit, secondary coating PBT alloy material, water blocking belt, oversheath and parallel embedded FRP, the oversheath is located the surface of water blocking belt, parallel embedded FRP is located the oversheath, the water blocking belt is located the surface of secondary coating PBT alloy material, the secondary coating PBT alloy material is located the surface of TPEE light unit. A nonmetal center tube transposition formula anti-icing optical cable, adopt no central reinforcement transposition mode when designing the optical unit transposition, the cable core after the transposition is filled fine cream back secondary and is covered one deck high rigidity PBT alloy material, the transposition unit adopts neotype cover to mould material TPEE material, adopts different colours to distinguish between the optical unit, promotes optical cable performance.

Description

Anti optical cable that freezes of nonmetal center tube transposition formula

Technical Field

The utility model relates to a communication optical cable technical field for electric power, in particular to nonmetal center tube transposition formula optical cable that freezes.

Background

The non-metal central tube stranded anti-freezing optical cable is a communication optical cable for electric power, the traditional leading-in optical cable for electric power generally adopts a conventional layer stranded structure, namely, a sleeve and a possible filling rope are directly stranded around a central reinforcement, a sheath material is directly extruded outside a layer stranded cable core, in the application scene of coexistence of electric power and communication in a transformer substation and the like, a metal composite belt can not be used as a reinforcing unit, the optical cable enters an intelligent transformer substation from the underground through a guide steel tube, if water enters the steel tube, icing in the leading-down steel tube is caused under severe cold conditions, and the optical cable is subjected to freezing extrusion, so that the traditional non-metal leading-in optical cable only has one layer of flame-retardant sheath, the lateral pressure resistance of the traditional non-metal leading-in optical cable is poor, and along with the continuous development of science and technology, the requirements of people on the manufacturing process of the non-metal flame-retardant optical cable are higher and higher.

The existing nonmetal flame-retardant optical cable has certain defects when in use, at present, an ADSS optical cable is mostly adopted to hang on a tower between towers for an optical cable for electric power communication, at present, the ADSS optical cable is mostly adopted to hang on the tower between towers for the optical cable for electric power communication, the flame-retardant leading-in optical cable is required to be adopted from the tower to a machine room, and the optical cable enters an intelligent substation from the underground through a leading steel pipe. In northern severe cold areas, under the condition that rainwater or underground water is led into the steel pipe, the condition of icing in the steel pipe is easily led down, so that the optical cable is extruded due to freezing. Under the condition that the optical cable receives frozen extrusion verification, the condition that attenuation is large or even communication is interrupted can be caused, the time and labor are wasted and the cost is very high when the optical cable is dug out and maintained in a frozen soil environment in winter, the communication problem can be solved only by temporarily laying a ground optical cable in an emergency mode, the optical cable is dug again after the weather is warmed, communication maintenance is interrupted, and secondary communication interruption is caused.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a be not enough to prior art, the utility model provides an optical cable is frozen in nonmetal center tube transposition formula is anti-icing adopts no central reinforcement transposition mode when designing the optical unit transposition, and the cable core after the transposition is filled fine cream back secondary and is covered one deck high rigidity PBT alloy material, and the transposition unit adopts neotype cover to mould material TPEE material, adopts different colours to distinguish between the optical unit, promotes performance, can effectively solve the problem in the background art.

(II) technical scheme

In order to achieve the above purpose, the utility model adopts the technical proposal that: a non-metal center tube stranded anti-freezing optical cable comprises an optical cable main body, wherein the optical cable main body comprises an optical fiber, a fiber paste, an optical unit TPEE coating layer, a TPEE optical unit, a secondary coated PBT alloy material, a water blocking tape, an outer sheath and parallel embedded FRP, the outer sheath is positioned on the outer surface of the water blocking tape, the parallel embedded FRP is positioned on the outer sheath, the water blocking tape is positioned on the outer surface of the secondary coated PBT alloy material, the secondary coated PBT alloy material is positioned on the outer surface of the TPEE optical unit, the TPEE optical unit is positioned on the outer surface of the optical unit TPEE coating layer, the optical unit TPEE coating layer is positioned on the outer side of the optical fiber and the fiber paste, a multifunctional composite sleeve is positioned between the TPEE optical unit and the secondary coated PBT alloy material, and a sealing and reinforcing skeleton ring is positioned between the secondary coated PBT alloy material and the water blocking tape.

As a preferred technical scheme of this application, multi-functional compound cover includes eva membrane, tpu membrane, thermal-insulated fire-resistant membrane, waterproof membrane and obdurability ceramic membrane, obdurability ceramic membrane is located the surface of waterproof membrane, waterproof membrane is located the surface of thermal-insulated fire-resistant membrane, thermal-insulated fire-resistant membrane is located the surface of tpu membrane, the tpu membrane is located the surface of eva membrane.

As an optimal technical scheme of this application, sealed reinforcement skeleton circle includes exoskeleton, epoxy cover, silicon rubber sheath, well skeleton, packing cover and inner frame, the exoskeleton is located the surface of epoxy cover, the epoxy cover is located the surface of silicon rubber sheath, the silicon rubber sheath is located the surface of packing cover, the packing cover is located the surface of inner frame, it has well skeleton to be located between packing cover and the silicon rubber sheath.

As a preferred technical solution of the present application, the optical fiber, the fiber paste, and the optical unit TPEE coating layer are connected in a sealing and positioning manner, the optical unit TPEE coating layer and the TPEE optical unit are positioned in a sealing manner, the secondary coated PBT alloy material, the water blocking tape, and the outer sheath are positioned in a sealing manner, the secondary coated PBT alloy material, the water blocking tape, and the sealing and reinforcing skeleton ring are positioned in a sealing manner, and the TPEE optical unit, the secondary coated PBT alloy material, and the multifunctional composite sleeve are positioned in a sealing manner.

As a preferable technical scheme, the eva membrane, the tpu membrane, the heat-insulating fireproof membrane, the waterproof membrane and the tough ceramic membrane are integrally formed through injection molding.

As an optimal technical scheme of this application, through the mode integrated into one piece of moulding plastics between exoskeleton, epoxy cover, silicon rubber sheath, packing cover, the inner frame, it is sealed fixed between packing cover, silicon rubber sheath and the well skeleton.

(III) advantageous effects

Compared with the prior art, the utility model provides an anti optical cable that freezes of nonmetal center tube transposition formula possesses following beneficial effect: the non-metal central pipe stranded anti-freezing optical cable adopts a non-central reinforcement stranding mode when optical units are stranded, a layer of high-hardness PBT alloy material is secondarily coated after a stranded cable core is filled with fiber paste, novel plastic sheathing material TPEE material is adopted for a stranding unit, different colors are adopted for distinguishing among optical units, if more than 12 optical units are distinguished by adopting a color bar or color ring scheme, the problem that an ultra-large core optical unit is easy to identify is solved, the secondarily coated plastic sheathing material is the PBT alloy material formed by mixing PC, PBT and PET according to a certain proportion and adding auxiliary materials such as plasticizers, and the like, in order to improve the bending, side pressure resistance and compression and flattening resistance of the optical cable, a high foaming TPU modified material is developed on the aspect of materials to realize the extrusion technology development of the optical cable, a sufficient buffer deformation space exists when the optical cable is subjected to freezing deformation, a loose sleeve containing the optical units is longitudinally wrapped by a water blocking tape, the outer sheath adopts a high-flame-retardant sheath material, 4 parallel FRP is embedded in the outer sheath to improve the side pressure resistance and mouse resistance of the optical cable on the other hand, the requirements of electric power construction in freezing and cold-resistant areas are met, the anti-freezing and flame-freezing and the anti-freezing optical cable can be conveniently operated in a simple and operation mode compared with the traditional non-metal central pipe.

Drawings

Fig. 1 is the utility model relates to an overall structure schematic diagram of anti optical cable that freezes of nonmetal center tube transposition formula.

Fig. 2 is the utility model discloses a structural schematic diagram of multi-functional composite sleeve in anti optical cable that freezes of nonmetal center tube transposition formula.

Fig. 3 is the utility model relates to a sealed skeleton ring's of strengthening structure schematic diagram in anti optical cable that freezes of nonmetal center tube transposition formula.

Fig. 4 is a schematic view of a process flow in the stranded anti-freezing optical cable of the non-metallic central tube of the present invention.

In the figure: 1. a cable main body; 2. an optical fiber; 3. fiber paste; 4. the optical unit TPEE is coated; 5. a TPEE optical unit; 6. secondary coating of PBT alloy material; 7. a water blocking tape; 8. an outer sheath; 9. FRP is embedded in parallel; 10. sealing the reinforcing framework ring; 11. a multifunctional composite sleeve; 12. an eva film; 13. a tpu membrane; 14. a heat insulating refractory film; 15. a strong toughness ceramic film; 16. a water-resistant film; 17. an outer skeleton; 18. an epoxy resin sleeve; 19. a silicone rubber sheath; 20. a middle framework; 21. filling the sleeve; 22. an inner skeleton.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings and detailed description, but those skilled in the art will understand that the following described embodiments are some, not all, of the embodiments of the present invention, and are only used for illustrating the present invention, and should not be construed as limiting the scope of the present invention. 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. The examples, in which specific conditions are not specified, were carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-4, a non-metal center tube stranded anti-freezing optical cable comprises an optical cable main body 1, the optical cable main body 1 comprises an optical fiber 2, a fiber paste 3, an optical unit TPEE coating layer 4, a TPEE optical unit 5, a secondary coated PBT alloy material 6, a water blocking tape 7, an outer sheath 8 and parallel embedded FRP9, the outer sheath 8 is positioned on the outer surface of the water blocking tape 7, the parallel embedded FRP9 is positioned on the outer sheath 8, the water blocking tape 7 is positioned on the outer surface of the secondary coated PBT alloy material 6, the secondary coated PBT alloy material 6 is positioned on the outer surface of the TPEE optical unit 5, the TPEE optical unit 5 is positioned on the outer surface of the optical unit TPEE coating layer 4, the optical unit TPEE coating layer 4 is positioned on the outer sides of the optical fiber 2 and the fiber paste 3, A multifunctional composite sleeve 11 is positioned between the TPEE optical unit 5 and the secondary coated PBT alloy material 6, a sealing reinforcing framework ring 10 is positioned between the secondary coated PBT alloy material 6 and the water-blocking tape 7, a center-free reinforcing part twisting mode is adopted during optical unit twisting, a layer of high-hardness PBT alloy material is coated secondarily after fiber paste is filled in a twisted cable core, the optical cable has better bending performance and lateral pressure resistance, the secondary coating layer cannot directly act on an optical fiber unit when being extruded and deformed, a novel plastic coating material TPEE material is adopted for the twisting unit, different colors are adopted for distinguishing between the optical units, and the problem that the optical unit with the overlarge core number is easy to identify is solved if more than 12 optical units are distinguished by adopting a color strip or color ring scheme.

Further, the multifunctional composite sleeve 11 comprises an eva membrane 12, a tpu membrane 13, a heat-insulating fireproof membrane 14, a waterproof membrane 16 and a tough ceramic membrane 15, wherein the tough ceramic membrane 15 is positioned on the surface of the waterproof membrane 16, the waterproof membrane 16 is positioned on the surface of the heat-insulating fireproof membrane 14, the heat-insulating fireproof membrane 14 is positioned on the surface of the tpu membrane 13, and the tpu membrane 13 is positioned on the surface of the eva membrane 12.

Further, the sealed reinforced framework ring 10 comprises an outer framework 17, an epoxy resin sleeve 18, a silicon rubber sheath 19, a middle framework 20, a filling sleeve 21 and an inner framework 22, wherein the outer framework 17 is located on the surface of the epoxy resin sleeve 18, the epoxy resin sleeve 18 is located on the surface of the silicon rubber sheath 19, the silicon rubber sheath 19 is located on the surface of the filling sleeve 21, the filling sleeve 21 is located on the surface of the inner framework 22, and the middle framework 20 is located between the filling sleeve 21 and the silicon rubber sheath 19.

Further, the optical fiber 2, the fiber paste 3 and the optical unit TPEE coating layer 4 are in sealed positioning connection, the optical unit TPEE coating layer 4 and the TPEE optical unit 5 are in sealed positioning, the secondary coated PBT alloy material 6, the water-blocking tape 7 and the outer sheath 8 are in sealed positioning, the secondary coated PBT alloy material 6, the water-blocking tape 7 and the sealed reinforced skeleton ring 10 are in sealed positioning, and the TPEE optical unit 5, the secondary coated PBT alloy material 6 and the multifunctional composite sleeve 11 are in sealed positioning.

Furthermore, the eva membrane 12, the tpu membrane 13, the heat-insulating and fire-resistant membrane 14, the waterproof membrane 16, and the tough ceramic membrane 15 are integrally molded by injection molding.

Further, the outer framework 17, the epoxy resin sleeve 18, the silicone rubber sheath 19, the filling sleeve 21 and the inner framework 22 are integrally molded in an injection molding mode, and the filling sleeve 21, the silicone rubber sheath 19 and the middle framework 20 are fixed in a sealing mode.

Further, a manufacturing process of the nonmetal central tube stranded anti-freezing optical cable comprises the following operation steps:

s1: the optical cable is structurally characterized by comprising a TPEE plastic light sheathing unit, a PBT alloy material secondary coating layer, a water blocking tape, an embedded FRP reinforcement and a high flame retardant outer sheath;

s2: the TPEE sleeve plastic optical unit optimizes the tension setting by optimizing the existing extrusion molding die, the optical unit adopts a 1-tube 2-48 core structure, and the optical fiber can adopt 180um, 200um and 245um optical fibers to design the TPEE sleeve plastic optical units with different structural sizes;

s3: TPEE optical units SZ with different colors are stranded or unidirectionally stranded to form cable core units, fiber paste is filled through an oil filling die, then secondary coating layer extrusion is carried out, and the extrusion material is a novel PBT alloy material;

s4: the loose tube containing the twisted light unit is longitudinally wrapped by the water-blocking tape and then is subjected to outer sheath, the outer sheath is made of high-flame-retardant sheath material, and 4 pieces of parallel FRP are embedded in the outer sheath, so that the lateral pressure resistance of the optical cable is improved, and the tensile strength and the rat-proof performance of the optical cable are improved.

Further, the manufacturing process flow of the optical cable in the steps S1-S4 comprises optical fiber warehousing, optical fiber coloring, TPEE plastic sheathing, plastic sheathing and optical unit stranding, PBT secondary coating and FRP outer sheath embedding.

The working principle is as follows: the utility model discloses an optical cable main part 1, optic fibre 2, fine cream 3, optical unit TPEE coating 4, TPEE optical unit 5, the secondary is covered PBT alloy material 6, the water-blocking tape 7, the oversheath 8, parallel embedded FRP9, sealed enhancement skeleton circle 10, multi-functional composite cover 11, eva membrane 12, tpu membrane 13, thermal-insulated fire-resistant membrane 14, obdurability ceramic membrane 15, water-proof membrane 16, outer frame 17, epoxy cover 18, silicon rubber sheath 19, well skeleton 20, packing sleeve 21, inner frame 22, adopt no central reinforcement transposition mode during the optical unit transposition, secondary is covered one deck high rigidity PBT alloy material behind the fine cream of cable core packing after the transposition, the optical cable has super large bending property and anti side pressure performance, can not directly act on the unit of optic fibre when secondary coating is extruded deformation, the transposition unit adopts neotype cover to mould material TPEE material, adopt different colours to distinguish between the optical unit, if exceed 12 optical units and adopted the solution that the colour bar or the colour ring scheme to carry out distinguishing and count the PBT alloy material easily discern, the problem: the secondary coating plastic sheathing material is a PBT alloy material which is formed by mixing PC, PBT and PET according to a certain proportion and adding auxiliary materials such as a plasticizer and the like, so that the lateral pressure resistance and the compression and flattening resistance of the PBT sleeve are enhanced, and the breaking strength of the optical cable is enhanced to some extent; the method is characterized in that a high-foaming TPU modified material is developed on the material aspect to realize the extrusion technology development, a TPU film is soft, a buffer layer where the high-foaming TPU modified material is located can have good deformation resilience performance when the buffer layer is deformed after the high-foaming TPU modified material is modified into the foaming TPU, the foaming degree can reach 80%, an enough buffer deformation space is provided when the optical cable is subjected to freezing deformation, a center-free reinforcement twisting mode is adopted during the twisting of TPEE optical units, a layer of high-hardness PBT alloy material is coated on the twisted cable core for the second time after fiber paste is filled in the twisted cable core, a loose tube containing the twisted optical units is longitudinally wrapped by a water blocking tape to form an outer sheath, the outer sheath is made of a high-flame-retardant sheath material, and 4 parallel FRP embedded in the outer sheath can improve the lateral pressure resistance of the optical cable on the one hand and the tensile and rat-proof performance of the optical cable on the other hand.

It is noted that, herein, relational terms such as first and second (a, b, etc.) and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides an anti optical cable that freezes of nonmetal center tube transposition formula, includes optical cable main part (1), its characterized in that: the optical cable main body (1) comprises an optical fiber (2), fiber paste (3), an optical unit TPEE coating layer (4), a TPEE optical unit (5), a secondary coated PBT alloy material (6), a water blocking tape (7), an outer sheath (8) and parallel embedded FRP (9), wherein the outer sheath (8) is positioned on the outer surface of the water blocking tape (7), the parallel embedded FRP (9) is positioned on the outer sheath (8), the water blocking tape (7) is positioned on the outer surface of the secondary coated PBT alloy material (6), the secondary coated PBT alloy material (6) is positioned on the outer surface of the TPEE optical unit (5), the TPEE optical unit (5) is positioned on the outer surface of the optical unit TPEE coating layer (4), the optical unit TPEE coating layer (4) is positioned on the outer side of the optical fiber (2) and the fiber paste (3), a multifunctional composite sleeve (11) is positioned between the TPEE optical unit (5) and the secondary coated PBT alloy material (6), and a sealing reinforcing ring (10) is positioned between the secondary coated PBT alloy material (6) and the water blocking tape (7).

2. The non-metallic center tube stranded freeze resistant optical cable of claim 1, wherein: the multifunctional composite sleeve (11) comprises an eva membrane (12), a tpu membrane (13), a heat-insulating fireproof membrane (14), a waterproof membrane (16) and a tough ceramic membrane (15), wherein the tough ceramic membrane (15) is located on the surface of the waterproof membrane (16), the waterproof membrane (16) is located on the surface of the heat-insulating fireproof membrane (14), the heat-insulating fireproof membrane (14) is located on the surface of the tpu membrane (13), and the tpu membrane (13) is located on the surface of the eva membrane (12).

3. The non-metallic center tube stranded freeze resistant optical cable of claim 1, wherein: the sealing reinforcing framework ring (10) comprises an outer framework (17), an epoxy resin sleeve (18), a silicon rubber sheath (19), a middle framework (20), a filling sleeve (21) and an inner framework (22), wherein the outer framework (17) is located on the surface of the epoxy resin sleeve (18), the epoxy resin sleeve (18) is located on the surface of the silicon rubber sheath (19), the silicon rubber sheath (19) is located on the surface of the filling sleeve (21), the filling sleeve (21) is located on the surface of the inner framework (22), and the middle framework (20) is located between the filling sleeve (21) and the silicon rubber sheath (19).

4. The non-metallic center tube stranded freeze resistant optical cable of claim 1, wherein: the optical fiber (2), the fiber paste (3) and the optical unit TPEE coating layer (4) are connected in a sealing and positioning mode, the optical unit TPEE coating layer (4) and the TPEE optical unit (5) are positioned in a sealing mode, the secondary coating PBT alloy material (6), the water blocking tape (7) and the outer sheath (8) are positioned in a sealing mode, the secondary coating PBT alloy material (6), the water blocking tape (7) and the sealing and reinforcing framework ring (10) are positioned in a sealing mode, and the TPEE optical unit (5), the secondary coating PBT alloy material (6) and the multifunctional composite sleeve (11) are positioned in a sealing mode.

5. A non-metallic center tube stranded freeze resistant optical cable as claimed in claim 2, wherein: the eva membrane (12), the tpu membrane (13), the heat insulation and fire resistance membrane (14), the waterproof membrane (16) and the tough ceramic membrane (15) are integrally formed through injection molding.

6. The stranded non-metallic center tube freeze resistant optical cable of claim 3, wherein: the outer framework (17), the epoxy resin sleeve (18), the silicon rubber sheath (19), the filling sleeve (21) and the inner framework (22) are integrally formed in an injection molding mode, and the filling sleeve (21), the silicon rubber sheath (19) and the middle framework (20) are fixed in a sealing mode.