CN210427904U

CN210427904U - All-dielectric self-supporting optical cable

Info

Publication number: CN210427904U
Application number: CN201921761343.4U
Authority: CN
Inventors: 徐天宇; 朱荣泉; 马建林; 钱镇国; 陈龙; 张军霞; 宋世元; 徐武康; 严惠良
Original assignee: Zhejiang Dongtong Optical Network Iot Technology Co Ltd
Current assignee: Zhejiang Dongtong Optical Network Iot Technology Co Ltd
Priority date: 2019-10-21
Filing date: 2019-10-21
Publication date: 2020-04-28
Anticipated expiration: 2029-10-21

Abstract

The utility model relates to an all-dielectric self-supporting optical cable, it includes optical cable, non-conductive bearing and draws piece and plastic sheath. The optical cable comprises an optical fiber bundle, a non-conductive loose tube, a non-conductive tape sleeve and a fiber paste filler. The non-conductive loose tube and the non-conductive wrapping band sleeve are sequentially sleeved on the periphery of the optical fiber bundle from inside to outside. The fiber paste filler is filled in the inner cavity of the non-conductive loose tube. The plastic sheath is composed of a tension member fixing portion, a connection transition portion and an optical cable fixing portion in sequence from top to bottom. Therefore, the optical cable is insensitive to electric shock and is suitable for areas with climatic environments of much thunder and lightning, much rain and the like, and on one hand, the interference of an electromagnetic field to the optical cable can be reduced; on the other hand, the electric charge generated in the thunder and lightning phenomenon can be prevented from entering the room along the optical cable, and the personal safety of residents and the normal use of access equipment are ensured. In addition, the workload and the construction investment caused by high-altitude erection construction can be effectively reduced.

Description

All-dielectric self-supporting optical cable

Technical Field

The utility model relates to a communication optical cable makes technical field, especially relates to an all-dielectric self-supporting optical cable.

Background

With the continuous development of network construction, the full-medium self-supporting optical fiber with high transmission rate, long distance and high construction convenience is expected to be more and more extensive and used as a data transmission carrier in a comprehensive wiring system. For the all-dielectric self-supporting optical cable, in order to improve the tensile strength of the optical cable, a tensile member should be arranged in the optical cable to share most of the tension borne by the optical cable during aerial laying. In the prior art, the tensile member is mostly made of metal, so that the optical cable achieves higher tensile strength and is suitable for long-distance indoor horizontal wiring or short-distance indoor vertical wiring, however, in some areas with multiple strong current phenomena, lightning strike charges are easily led into the indoor space through the tensile member, the personal safety of residents is endangered, and the access equipment is easily subjected to instantaneous high voltage action and loses normal working performance, so that the communication equipment is damaged by lightning introduced into the optical cable, and the optical cable is not suitable for being laid into a home. In addition, in order to ensure the safety of pedestrians, the outdoor construction stage usually adopts an overhead manner to prevent touching, thereby greatly increasing the occupied space and the construction cost, and thus, a skilled person is urgently needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an all-dielectric self-supporting optical cable, it has higher tensile strength, ensures that the optical cable has higher life, and stops the electric charge effectively and postpones the indoor phenomenon emergence of entering.

In order to solve the technical problem, the utility model relates to an all-dielectric self-supporting optical cable, it includes optical cable, non-conductive bearing and draws piece and plastic sheath. The optical cable comprises an optical fiber bundle, a non-conductive loose tube, a non-conductive tape sleeve and a fiber paste filler. The non-conductive loose tube and the non-conductive wrapping band sleeve are sequentially sleeved on the periphery of the optical fiber bundle from inside to outside. The fiber paste filler is filled in the inner cavity of the non-conductive loose tube. The plastic sheath is composed of a tension member fixing portion, a connection transition portion and an optical cable fixing portion in sequence from top to bottom. The optical cable is inserted and fixed in the optical cable fixing part. The non-conductive bearing part is arranged in parallel with the optical cable and is arranged and fixed inside the fixing part of the bearing part in a penetrating way.

As a further improvement of the technical proposal of the utility model, the above-mentioned fiber paste filler is filling factice.

As a further improvement of the technical proposal of the utility model, the inner side wall of the non-conductive wrapping tape sleeve is coated with a water-resistant layer.

As a further improvement of the technical solution of the present invention, the non-conductive tape cover is preferably made of a fiberglass tape.

As a further improvement of the technical proposal of the utility model, the plastic sheath is made of polyolefin rubber.

As a further improvement of the technical proposal of the utility model, the plastic sheath is made of tracking-resistant polyethylene sheath material, and the specific gravity of the plastic sheath is controlled to be more than 1.1g/cm 3.

As the technical proposal of the utility model is further improved, the non-conductive tensile piece is preferably a FRP non-metal reinforced core.

Compare in the all-dielectric self-supporting optical cable of traditional project organization the utility model discloses an among the technical scheme, the piece and the sheath of holding for the component optical cable all select non-conductive material to make, and the outer protective layer of optical cable also has non-conductive characteristic to make optical cable self insensitive to the electric shock, be applicable to weather environment areas such as many thunder and lightning, rainy. Therefore, on one hand, the interference of the electromagnetic field to the optical cable can be reduced, and the signal transmission quality is ensured; on the other hand, the electric charge generated in the thunder and lightning phenomenon is effectively prevented from entering the room along the optical cable, and the personal safety of residents and the normal use of access equipment are ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a first embodiment of the all-dielectric self-supporting optical cable of the present invention.

Fig. 2 is a schematic structural diagram of a second embodiment of the all-dielectric self-supporting optical cable according to the present invention.

Fig. 3 is a schematic structural diagram of a third embodiment of the all-dielectric self-supporting optical cable according to the present invention.

1-an optical cable; 11-a fiber optic bundle; 12-a non-conductive loose tube; 13-a non-conductive tape cover; 131-a water resistant layer; 14-a paste filler; 2-a non-conductive tensile member; 3-plastic sheath; 31-a tensile member fixing portion; 32-a connection transition; 33-optical cable fixing part; 4-hydrophobic coating.

Detailed Description

In the description of the present invention, it is to be understood that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience of description of the present invention and simplification of description, and 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.

The contents of the present invention will be further described in detail with reference to the following specific embodiments, and fig. 1 shows a schematic structural diagram of a first embodiment of the all-dielectric self-supporting optical cable of the present invention, which mainly comprises an optical cable 1, a non-conductive tensile member 2, and a plastic sheath 3. The optical cable 1 includes an optical fiber bundle 11, a non-conductive loose tube 12, a non-conductive tape sheath 13, and a fiber paste filler 14. The non-conductive loose tube 12 and the non-conductive wrapping sleeve 13 are sequentially sleeved on the periphery of the optical fiber bundle 11 from inside to outside along the radial direction of the optical fiber bundle 11. A paste filler 14 fills the lumen of the non-conductive loose tube 12. The plastic sheath 3 is composed of a tension member fixing portion 31, a connection transition portion 32 and an optical cable fixing portion 33 in this order from top to bottom. The optical cable 1 is inserted and fixed into the optical cable fixing portion 33. The non-conductive tension bearing member 2 is disposed in parallel with the optical cable 1, and is inserted and fixed in the tension bearing member fixing portion 31. Therefore, the optical cable is insensitive to electric shock and is suitable for areas with climatic environments of much thunder, much rain and the like, so that on one hand, the interference of an electromagnetic field on the optical cable can be reduced, and the signal transmission quality is ensured; on the other hand, the electric charge generated in the thunder and lightning phenomenon is effectively prevented from entering the room along the optical cable, and the personal safety of residents and the normal use of access equipment are ensured. In addition, the optical cable arrangement is avoided by adopting a conventional aerial optical cable mode, so that the construction period and the cost are reduced.

In order to improve the waterproof performance of the optical cable 1 and ensure the product quality thereof, the fiber paste filler 14 is preferably a filling paste having a good waterproof performance and being easy to mold and manufacture.

It is known that glass fiber tapes have high tensile strength and are lightweight. In addition, in the actual use process, the glass fiber tape is not easily interfered by induced current generated by a power supply wire or a power supply device. In view of this, the non-conductive tape cover 13 is preferably wound from a roll of glass fiber tape. In addition, in the process that the optical cable is bitten by rats, the acicular glass fiber can hurt the oral cavity of the rats, so that the rats feel afraid of the optical cable, and the rat-proof effect is achieved.

Moreover, the plastic sheath 3 is preferably made of polyolefin rubber, so that on one hand, the manufacturing and molding of the all-dielectric self-supporting optical cable are facilitated, and the production cost is reduced; on the other hand, the all-dielectric self-supporting optical cable is ensured to have excellent non-conductive performance.

In addition, the design service life of the medium self-supporting optical cable is usually more than 10 years, and particularly when the medium self-supporting optical cable is used in areas with frequent lightning stroke, a strong electric field exists around the medium self-supporting optical cable, and the outer sheath of the medium self-supporting optical cable is extremely easy to be damaged by electric corrosion under the action of the electric fields such as moisture, dirt on the surface of the plastic sheath and the like. In order to solve the above technical problems, the plastic sheath 3 is preferably made of a tracking-resistant polyethylene sheath material, and the specific gravity thereof is controlled to be more than 1.1g/cm3, so that the plastic sheath has excellent tracking resistance, and simultaneously has excellent ultraviolet irradiation resistance and environmental stress cracking resistance.

It is known that the FRP non-metal reinforced core has high tensile strength, small specific gravity which is only one fourth of that of the steel wire, and good compatibility with the plastic sheath 3, which is beneficial for manufacturing and molding the optical cable, and therefore, the non-conductive tensile member 2 is preferably an FRP non-metal reinforced core.

Fig. 2 shows a schematic structural diagram of a second embodiment of the all-dielectric self-supporting optical cable of the present invention, which is different from the first embodiment in that: the inner side wall of the non-conductive tape cover 13 is coated with a water blocking layer 131, so that the water blocking performance of the optical cable 1 is further improved, and the stability of the transmission signal is ensured.

Fig. 3 shows a schematic structural diagram of a third embodiment of the all-dielectric self-supporting optical cable of the present invention, which is different from the second embodiment in that: the hydrophobic coating 4 is arranged on the peripheral side wall of the plastic sheath 3, so that the drip of the all-dielectric self-supporting optical cable is prevented from being stained, the dry belt on the outer surface of the all-dielectric self-supporting optical cable is effectively avoided, and the dry belt arc is prevented from being generated. Of course, for the same purpose, an insulating agent (not shown) such as mica mist powder base or ceramic powder base may be sprayed on the outer peripheral side wall of the plastic sheath 3.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An all-dielectric self-supporting optical cable is characterized by comprising an optical cable, a non-conductive bearing part and a plastic sheath; the optical cable comprises an optical fiber bundle, a non-conductive loose tube, a non-conductive tape sleeve and a fiber paste filler; the non-conductive loose tube and the non-conductive wrapping band sleeve are sequentially sleeved on the periphery of the optical fiber bundle from inside to outside; the fiber paste filler is filled in the inner cavity of the non-conductive loose tube; the plastic sheath is composed of a tension member fixing part, a connection transition part and an optical cable fixing part in sequence from top to bottom; the optical cable is arranged and fixed in the optical cable fixing part; the non-conductive bearing part and the optical cable are arranged in parallel, and are arranged in the bearing part in a penetrating way and fixed in the bearing part fixing part.

2. The all-dielectric self-supporting optical cable of claim 1, wherein the fiber-cement filler is a filler paste.

3. The all-dielectric self-supporting optical cable of claim 1, wherein a water-resistant layer is coated on an inner sidewall of the non-conductive tape jacket.

4. The all-dielectric self-supporting optical cable of any one of claims 1-3, wherein the non-conductive tape jacket is wound from a roll of fiberglass tape.

5. The all-dielectric self-supporting optical cable of any one of claims 1-3, wherein the plastic jacket is made of polyolefin rubber.

6. The all-dielectric self-supporting optical cable according to any one of claims 1 to 3, wherein the plastic sheath is made of a tracking-resistant polyethylene sheath material and has a specific gravity controlled to 1.1g/cm³The above.

7. The all-dielectric self-supporting optical cable of any one of claims 1-3, wherein the non-conductive tensile member is an FRP non-metallic strength core.