CN210401777U

CN210401777U - Flame-retardant outdoor communication optical cable

Info

Publication number: CN210401777U
Application number: CN201921321326.9U
Authority: CN
Inventors: 杜长军; 李新华
Original assignee: Dongguan Tw Scie Co ltd
Current assignee: Dongguan Tw Scie Co ltd
Priority date: 2019-08-15
Filing date: 2019-08-15
Publication date: 2020-04-24
Anticipated expiration: 2029-08-15

Abstract

The utility model discloses a flame-retardant outdoor communication optical cable, which comprises a self-supporting part, an optical cable part and a polyethylene outer sheath; the self-supporting part comprises a suspension line, and the optical cable part comprises an optical fiber unit, a waterproof layer and a shielding layer; the outer polyethylene sheath is wrapped outside the self-supporting part and the optical cable part, the outer surface of the outer polyethylene sheath is wrapped with the flame-retardant layer, and the outer surface of the flame-retardant layer is covered with the weather-resistant layer; the polyethylene outer sheath is wrapped outside the self-supporting part and the optical cable part, so that the connection strength of the polyethylene outer sheath is enhanced; and because the first arc inclined plane is positioned above the second arc inclined plane, the diameter of the first arc inclined plane is smaller than that of the second arc inclined plane, so that snow or foreign matters in an outdoor environment can slide down from a connecting tangent plane, the ice and snow resistance and the wind resistance of the optical cable are improved, and meanwhile, the flame-retardant layer is sequentially arranged on the outer side surface of the polyethylene outer sheath, so that the optical cable can be prevented from spontaneous combustion after being struck by lightning.

Description

Flame-retardant outdoor communication optical cable

Technical Field

The utility model belongs to the technical field of the optical cable technique and specifically relates to indicate a fire-retardant type outdoor communication optical cable.

Background

The self-supporting communication optical cable has all the characteristics of a common optical cable, and can avoid secondary construction during overhead laying, so that the self-supporting communication optical cable is increasingly applied to network construction. The self-supporting optical cable is laid overhead inevitably through multi-cross-wind and multi-ice and snow zones such as coastal areas, valleys and the like, and is in a severe outdoor environment with multi-wind or multi-ice and snow for a long time, and the self-supporting optical cable has high requirements on the quality, particularly wind resistance and ice and snow resistance. Once the optical signal is interrupted due to poor wind resistance and ice and snow resistance, serious consequences are caused. The traditional self-supporting optical cable is mostly of an 8-shaped structure, the optical cable part and the self-supporting part are connected through an umbilical cord, and the optical cable part and the self-supporting part are both circular or square, so that the side wall of the optical cable is large in impact force when being blown by wind, ice and snow are easily attached to the circular or square outer wall, and the performances of wind resistance and ice and snow resistance are poor; meanwhile, the optical cables are all provided with current circulation, which may cause lightning strike to cause spontaneous combustion, thereby causing communication interruption.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a flame retardant outdoor communication optical cable, which can effectively solve the problems of poor wind and snow resistance and spontaneous combustion due to lightning strike in the existing optical cable.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a flame-retardant outdoor communication optical cable comprises a self-supporting part, an optical cable part and a polyethylene outer sheath; the self-supporting part comprises a suspension line which is made of high-strength non-metallic materials; the optical cable part comprises an optical fiber unit, a waterproof layer and a shielding layer, the waterproof layer wraps the outer surface of the optical fiber unit, and the shielding layer wraps the outer surface of the waterproof layer; the outer wall of the upper end of the polyethylene outer sheath is a first arc inclined plane which is an arc, the outer wall of the lower end of the polyethylene outer sheath is a second arc inclined plane which is an arc, a linking tangent plane is connected between the second arc inclined plane and the first arc inclined plane, the diameter of the first arc inclined plane is smaller than that of the second arc inclined plane, the outer surface of the polyethylene outer sheath is wrapped with a flame-retardant layer, and the outer surface of the flame-retardant layer is covered with a weather-resistant layer.

As a preferred embodiment: the number of the connecting sections is two, and the two connecting sections are distributed on the left side and the right side of the optical cable in a mirror image mode.

As a preferred embodiment: still be equipped with a plurality of reinforcements in the polyethylene oversheath, the material of this reinforcement is steel wire or FRP.

As a preferred embodiment: the number of the reinforcing members is 4.

As a preferred embodiment: the optical fiber unit quantity is 3, and this light unit includes a plurality of optical fiber and pine sleeve, and this pine sleeve wraps up in the periphery of optical fiber.

As a preferred embodiment: the suspension wire is disposed above the optical cable portion.

Compared with the prior art, the utility model obvious advantage and beneficial effect have, particularly, can know by above-mentioned technical scheme:

the polyethylene outer sheath is wrapped outside the self-supporting part and the optical cable part, so that the connection strength of the polyethylene outer sheath is enhanced; and because the first arc inclined plane is positioned above the second arc inclined plane, the diameter of the first arc inclined plane is smaller than that of the second arc inclined plane, so that snow or foreign matters in an outdoor environment can slide down from a connecting tangent plane, the ice and snow resistance and the wind resistance of the optical cable are improved, and meanwhile, the flame-retardant layer is sequentially arranged on the outer side surface of the polyethylene outer sheath, so that the optical cable can be prevented from spontaneous combustion after being struck by lightning.

To illustrate the structural features and functions of the present invention more clearly, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Drawings

Fig. 1 is a cross-sectional view of a preferred embodiment of the present invention.

The attached drawings indicate the following:

10. self-supporting part 11, suspension wire

20. Optical cable part 21 and optical fiber unit

22. Waterproof layer 23 and shielding layer

24. Optical fiber 241, loose tube

30. Polyethylene outer sheath 301 and first arc inclined plane

302. Second arc bevel 303, joining section

31. Flame retardant layer 32, weatherable layer

33. A reinforcement.

Detailed Description

Referring to fig. 1, a specific structure of a preferred embodiment of the present invention is shown, which includes a self-supporting portion 10, an optical cable portion 20, and a polyethylene outer sheath 30.

The self-supporting part 10 comprises a suspension line 11, the suspension line 11 is made of a high-strength non-metallic material, the self-supporting part 10 is preferably made of a non-conductive high-strength non-metallic material, and the suspension line 11 has excellent physical properties, so that the hidden danger of disaster entering a home due to the fact that thunder conducts electricity through the suspension line 11 is effectively solved, and the communication quality is prevented from being influenced.

The optical cable section 20 is disposed below the self-supporting section 10, and the suspension wire 11 is disposed above the optical cable section 20. The optical cable part 20 includes an optical fiber unit 21, a waterproof layer 22 and a shielding layer 23, in this embodiment, the number of the optical fiber unit 21 is 3, the optical fiber unit includes a plurality of optical fibers 24 and a loose tube 241, and the loose tube 241 is wrapped around the optical fibers 24. This waterproof layer 22 parcel is in optical fiber unit 21's surface, and this waterproof layer 22 can prevent, and this waterproof layer 22's surface cladding has shielding layer 23, can make between the adjacent optical fiber unit 21 not disturbed through being equipped with shielding layer 23, has effectively promoted product signal transmission's stability and reliability.

This polyethylene oversheath 30 wraps up outside self-supporting portion 10 and optical cable portion 20, the upper end outer wall of this polyethylene oversheath 30 is the first circular arc inclined plane 301 that is the circular arc, the lower extreme outer wall of this polyethylene oversheath 30 is the second circular arc inclined plane 302 that is the circular arc, be connected with between second circular arc inclined plane 302 and the first circular arc inclined plane 301 and link up tangent plane 303, in this embodiment, the quantity of this linking tangent plane 303 is two, two link up tangent planes 303 mirror image distribution are in the left and right sides of optical cable, the diameter of this first circular arc inclined plane 301 is less than the diameter of second circular arc inclined plane 302, simultaneously because first circular arc inclined plane 301 is located the top of second circular arc inclined plane 302, make snow or the foreign matter in the outdoor environment can slide down from linking tangent plane 303. The polyethylene sheath 30 is further provided with a plurality of reinforcing members 33, in this embodiment, the number of the reinforcing members 33 is 4, and the reinforcing members 33 are made of steel wires or FRP. The outer surface of this polyethylene oversheath 30 has wrapped up fire-retardant layer 31, and the surface of this fire-retardant layer 31 covers has weather resistant layer 32, can promote the comprehensive destruction that polyethylene oversheath 30 caused at outdoor illumination, wind and rain, bacterium etc. through being equipped with weather resistant layer 32.

The utility model discloses a design focus lies in:

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.

Claims

1. A fire-retardant type outdoor communication optical cable which characterized in that: comprises a self-supporting part, an optical cable part and a polyethylene outer sheath; the self-supporting part comprises a suspension line which is made of high-strength non-metallic materials; the optical cable part comprises an optical fiber unit, a waterproof layer and a shielding layer, the waterproof layer wraps the outer surface of the optical fiber unit, and the shielding layer wraps the outer surface of the waterproof layer; the outer wall of the upper end of the polyethylene outer sheath is a first arc inclined plane which is an arc, the outer wall of the lower end of the polyethylene outer sheath is a second arc inclined plane which is an arc, a linking tangent plane is connected between the second arc inclined plane and the first arc inclined plane, the diameter of the first arc inclined plane is smaller than that of the second arc inclined plane, the outer surface of the polyethylene outer sheath is wrapped with a flame-retardant layer, and the outer surface of the flame-retardant layer is covered with a weather-resistant layer.

2. The flame-retardant outdoor communication optical cable according to claim 1, wherein: the number of the connecting sections is two, and the two connecting sections are distributed on the left side and the right side of the optical cable in a mirror image mode.

3. The flame-retardant outdoor communication optical cable according to claim 1, wherein: still be equipped with a plurality of reinforcements in the polyethylene oversheath, the material of this reinforcement is steel wire or FRP.

4. The flame-retardant outdoor communication optical cable according to claim 3, wherein: the number of the reinforcing members is 4.

5. The flame-retardant outdoor communication optical cable according to claim 1, wherein: the optical fiber unit quantity is 3, and this light unit includes a plurality of optical fiber and pine sleeve, and this pine sleeve wraps up in the periphery of optical fiber.

6. The flame-retardant outdoor communication optical cable according to claim 1, wherein: the suspension wire is disposed above the optical cable portion.