CN210401778U

CN210401778U - Armored temperature-sensing optical cable

Info

Publication number: CN210401778U
Application number: CN201921321362.5U
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 an armored temperature-sensing optical cable, which comprises a temperature-sensing optical fiber, a plurality of optical fiber units, an optical cable waterproof yarn layer, a plurality of auxiliary reinforcing strips, a metal composite belt and a flame-retardant sheath; the plurality of optical fiber units are distributed at intervals on the periphery of the temperature sensing optical fiber, and a peripheral reinforcing pipe is coated outside each optical fiber unit; the optical cable waterproof yarn layer is coated on the peripheries of the optical fiber units; the auxiliary reinforcing strips are distributed on the outer surface of the optical cable waterproof yarn layer and extend along the axial direction of the optical cable waterproof yarn layer; the flame-retardant sheath is coated on the periphery of the metal composite belt; through being equipped with a plurality of supplementary enhancement strips in the periphery on the waterproof yarn layer of optical cable, the peripheral parcel of this supplementary enhancement strip has the compound area of one deck metal, the promotion of ability to a great extent the tensile strength of optical cable with reduce the loss of bending, the peripheral cladding of strengthening the strip has fire-retardant sheath simultaneously for the optical cable has fire-retardant function, can prevent that the condition of optical cable spontaneous combustion under high temperature environment from taking place.

Description

Armored temperature-sensing optical cable

Technical Field

The utility model belongs to the technical field of the optical cable technique and specifically relates to indicate an armor type temperature sensing optical cable.

Background

High-voltage direct-current transmission is widely applied as a novel transmission mode, but conventional monitoring of operation parameters of a grounding electrode of a direct-current converter station completely depends on manual acquisition at present, the number of monitoring points is few, the degree of automation is low, event alarm is delayed, and especially the requirements for realizing the functions of real-time temperature monitoring, data overrun alarm and the like of the grounding electrode are more urgent. Particularly, deep-well grounding electrodes, long deep drilled holes and other deep-buried drilling temperature measurement projects have the construction difficulties of high confining pressure, high corrosion, filling dislocation, heavy self weight of the temperature measurement optical cable and the like, and the existing temperature measurement optical cable in the market hardly meets the requirements in practical projects.

The distributed optical fiber temperature measurement (DTS) technology directly adopts a distributed optical cable as a sensing element, has the advantages of distributed measurement, long-distance test, convenient installation, long-term stability and the like, and is widely applied to the fields of fire fighting, cable temperature measurement, concrete temperature measurement, leakage monitoring and the like.

Most distributed temperature measuring optical cables on the market at present have weak tensile and compression characteristics, are easy to break or bend and lose when being installed in a long deep drilling hole, have poor long-term stability, and are easy to burn and damage in a high-temperature environment.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides an armored temperature-sensing optical cable, which can effectively solve the problems of easy breaking, bending loss and no flame-retardant function of the existing optical cable.

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

an armored temperature-sensing optical cable comprises a temperature-sensing optical fiber, a plurality of optical fiber units, an optical cable waterproof yarn layer, a plurality of auxiliary reinforcing strips, a metal composite belt and a flame-retardant sheath; the plurality of optical fiber units are distributed at intervals on the periphery of the temperature sensing optical fiber, and a peripheral reinforcing pipe is coated outside each optical fiber unit; the optical cable waterproof yarn layer is coated on the peripheries of the optical fiber units; the auxiliary reinforcing strips are distributed on the outer surface of the optical cable waterproof yarn layer and extend along the axial direction of the optical cable waterproof yarn layer; the metal composite belt is coated on the periphery of the auxiliary reinforcing strips; the flame-retardant sheath is wrapped on the periphery of the metal composite belt.

As a preferred embodiment: the temperature sensing optical fiber comprises a plurality of multimode PTIG special high-temperature colored optical fibers and a plurality of single-mode colored optical fibers.

As a preferred embodiment: the auxiliary reinforcing strips are arranged on the periphery of the waterproof yarn layer of the optical cable at equal intervals and in the circumferential direction.

As a preferred embodiment: the plurality of optical fiber units are arranged on the inner side surface of the waterproof yarn layer of the optical cable at equal intervals and in a circumferential mode.

As a preferred embodiment: the number of the optical fiber units is 5.

As a preferred embodiment: the number of the auxiliary reinforcing bars is 20.

As a preferred embodiment: the metal composite belt is a steel-plastic composite belt or an aluminum-plastic composite belt.

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

through being equipped with a plurality of supplementary enhancement strips in the periphery on the waterproof yarn layer of optical cable, the peripheral parcel of this supplementary enhancement strip has the compound area of one deck metal, the promotion of ability to a great extent the tensile strength of optical cable with reduce the loss of bending, the peripheral cladding of strengthening the strip has fire-retardant sheath simultaneously for the optical cable has fire-retardant function, can prevent that the condition of optical cable spontaneous combustion under high temperature environment from taking place.

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. temperature-sensitive optical fiber 20 and optical fiber unit

21. Peripheral reinforced pipe 30, optical cable waterproof yarn layer

40. Auxiliary reinforcing strip 50 and metal composite belt

60. A flame retardant jacket.

Detailed Description

Referring to fig. 1, a specific structure of a preferred embodiment of the present invention is shown, which includes a temperature-sensing optical fiber 10, an optical fiber unit 20, a cable waterproof yarn layer 30, an auxiliary reinforcing strip 40, a metal composite tape 50, and a flame-retardant sheath 60.

The temperature sensing optical fiber 10 can monitor the ring around the optical fiber in real time, feed back the abnormal condition of the ring around, and eliminate the accident in the bud. The temperature sensing optical fiber 10 comprises a plurality of multimode PTIG special high-temperature colored optical fibers and a plurality of single-mode colored optical fibers which are matched together to work.

The plurality of optical fiber units 20 are disposed on the periphery of the temperature sensing optical fiber 10, in this embodiment, the number of the optical fiber units 20 is 5, 5 optical fiber units 20 are arranged on the periphery of the temperature sensing optical fiber 10 at equal intervals and circumferentially, the periphery of the optical fiber units 20 is wrapped with a peripheral reinforcing tube 21, the peripheral reinforcing tube 21 is made of a plastic material, and the peripheral reinforcing tube 21 can protect the optical fiber units 20 and can also play a waterproof role for the optical fiber units 20.

The optical cable waterproof yarn layer 30 is coated on the periphery of the optical fiber units 20, in this embodiment, 5 optical fiber units 20 are arranged on the inner side surface of the optical cable waterproof yarn layer 30 at equal intervals and circumferentially, and the optical cable waterproof yarn layer 30 plays a waterproof effect for the light units and the temperature sensing light.

The auxiliary reinforcing strip 40 is disposed at the periphery of the waterproof yarn layer 30 of the optical cable, and in this embodiment, the auxiliary reinforcing strip 40 is made of FRP which is a fiber reinforced composite material, and is generally a high-performance material formed by mixing a fiber material and a matrix material according to a certain ratio. The material is light and hard, non-conductive, high in mechanical strength, less in recycling and corrosion resistant. The auxiliary reinforcing strips 40 are distributed on the outer surface of the optical cable waterproof yarn layer 30 at equal intervals and circumferentially and extend along the axial direction of the optical cable waterproof yarn layer 30, the number of the auxiliary reinforcing strips 40 is 20, and the auxiliary reinforcing strips assist in enhancing the compression-resistant and tensile-resistant mechanical strength of the whole optical cable and simultaneously enhance the transverse shear-resistant effect of the optical cable.

The metal composite tape 50 is a steel-plastic composite tape or an aluminum-plastic composite tape, and the metal composite tape 50 is wrapped around the plurality of auxiliary reinforcing strips 40 to wrap the auxiliary reinforcing strips 40, so that the strength of the optical cable can be better enhanced.

The flame-retardant sheath 60 is wrapped on the periphery of the metal composite belt 50, the flame-retardant sheath 60 is used for protecting the outermost layer of the whole optical cable, and the flame-retardant sheath 60 is made of flame-retardant materials and can prevent the optical cable from being damaged due to external fire.

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. An armor type temperature sensing optical cable which characterized in that: comprises a temperature-sensing optical fiber, a plurality of optical fiber units, an optical cable waterproof yarn layer, a plurality of auxiliary reinforcing strips, a metal composite belt and a flame-retardant sheath; the plurality of optical fiber units are distributed at intervals on the periphery of the temperature sensing optical fiber, and a peripheral reinforcing pipe is coated outside each optical fiber unit; the optical cable waterproof yarn layer is coated on the peripheries of the optical fiber units; the auxiliary reinforcing strips are distributed on the outer surface of the optical cable waterproof yarn layer and extend along the axial direction of the optical cable waterproof yarn layer; the metal composite belt is coated on the periphery of the auxiliary reinforcing strips; the flame-retardant sheath is wrapped on the periphery of the metal composite belt.

2. The armored temperature-sensitive optical cable of claim 1, wherein: the temperature sensing optical fiber comprises a plurality of multimode PTIG special high-temperature colored optical fibers and a plurality of single-mode colored optical fibers.

3. The armored temperature-sensitive optical cable of claim 1, wherein: the auxiliary reinforcing strips are arranged on the periphery of the waterproof yarn layer of the optical cable at equal intervals and in the circumferential direction.

4. The armored temperature-sensitive optical cable of claim 1, wherein: the plurality of optical fiber units are arranged on the inner side surface of the waterproof yarn layer of the optical cable at equal intervals and in a circumferential mode.

5. The armored temperature-sensitive optical cable of claim 1, wherein: the number of the optical fiber units is 5.

6. The armored temperature-sensitive optical cable of claim 1, wherein: the number of the auxiliary reinforcing bars is 20.

7. The armored temperature-sensitive optical cable of claim 1, wherein: the metal composite belt is a steel-plastic composite belt or an aluminum-plastic composite belt.