CN217822161U

CN217822161U - Embedded optical fiber temperature measurement integrated cable

Info

Publication number: CN217822161U
Application number: CN202222122173.3U
Authority: CN
Inventors: 杨奇锋; 谢刚; 杨宇锋
Original assignee: Hunan Valin Wire and Cable Co Ltd
Current assignee: Hunan Valin Wire and Cable Co Ltd
Priority date: 2022-08-11
Filing date: 2022-08-11
Publication date: 2022-11-15
Anticipated expiration: 2032-08-11

Abstract

The utility model relates to an embedded optic fibre temperature measurement integral type cable belongs to special cable technical field, including copper core conductor, internal shield layer and protective layer, the internal shield layer is conductor shielding layer, XLPE insulating layer, insulating shield layer and metallic shield layer from inside to outside in proper order, wherein, lay the optic fibre cable in the insulating shield layer with the sine wave form, the optic fibre cable includes the optic fibre bundle and the protective sheath of cladding in the optic fibre bundle outside; the optical fiber cable takes a non-metal material as a protective layer of an optical fiber bundle, and the protective layer of the non-metal material has the advantages of not influencing the electric field distribution of the cable and avoiding adverse influence on the safe operation of electric power; meanwhile, a plurality of strands of paper ropes or hemp ropes are wound on the outer side of the optical fiber cable, and the soft wire has buffering and protecting effects; and finally, the optical fiber cable is laid in a sine wave form, so that the sensitivity and effectiveness of optical fiber bundle temperature measurement are improved.

Description

Embedded optical fiber temperature measurement integrated cable

Technical Field

The utility model belongs to the technical field of the special type cable, specifically, relate to embedded optic fibre temperature measurement integral type cable.

Background

At present, in a power transmission line, an optical fiber temperature measurement system is often adopted to monitor the temperature of each point of a cable. The optical fiber temperature measuring system lays a temperature measuring optical cable along the cable, and the temperature measuring optical cable can continuously obtain the temperature of each point along the cable.

However, the conventional optical fiber cable and the composite power cable have the following technical problems: since the mechanical strength of the optical fiber is very weak, the optical fiber is easily damaged. Therefore, on the one hand, the optical fiber is accommodated in a metal conduit with high strength and small radius of curvature in the prior art, but the metal conduit may damage the insulation shielding layer, thereby reducing the insulation strength; meanwhile, the metal conduit can affect the electric field distribution state of the cable; on the other hand, in the prior art, the optical fiber is fixed by adopting the factice, but in actual use, the factice is easy to melt when meeting high temperature, which causes adverse effect on the optical fiber cable and also influences the construction work of the cable joint.

Therefore, it is highly desirable to improve the existing optical fiber protection process to improve the sensitivity and effectiveness of optical fiber temperature measurement without damaging the insulation shielding layer and affecting the electric field distribution state of the cable.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem who mentions in the background art, the utility model provides an embedded optic fibre temperature measurement integral type cable.

The purpose of the utility model can be realized by the following technical scheme:

the embedded optical fiber temperature measurement integrated cable comprises a copper core conductor, an inner shielding layer and a protective layer, wherein an optical fiber cable is laid in the inner shielding layer;

the inner shielding layer sequentially comprises a conductor shielding layer, an XLPE insulating layer, an insulating shielding layer and a metal shielding layer from inside to outside; the optical fiber cable is laid in the insulation shielding layer, and a plurality of strands of soft wires are wound on the outer side of the optical fiber cable;

the protective layer comprises a filling layer, an inner protective layer, an isolating sleeve, an armor layer and an outer protective layer from inside to outside in sequence.

Further, the optical fiber cable comprises an optical fiber bundle and a rubber protective sleeve covering the outer side of the optical fiber bundle.

Further, the soft wire is a paper rope or a hemp rope.

In above-mentioned structure, select for use paper rope or hemp rope to wind as soft wire rod and establish in the optical fiber cable outside, at first soft wire rod is more obedient, and when optical fiber cable received radial external force, soft wire rod played certain cushioning effect, and soft wire rod texture is softer simultaneously, can provide certain removal space for optical fiber cable, plays certain guard action.

Further, the production process of the embedded optical fiber temperature measurement integrated cable comprises the following steps:

s1, twisting a plurality of copper wire bundles and then twisting the copper wire bundles again to form a copper core conductor;

s1, twisting the optical fiber filling strips and 6 optical fibers in a 0+6 twisting mode to form an optical fiber bundle, extruding and wrapping a modified polyvinyl chloride elastomer on the outer side of the optical fiber bundle to form a rubber protective sleeve to manufacture an optical fiber cable, and wrapping a plurality of strands of soft wires on the outer side of the optical fiber cable to form an embedded body;

s3, extruding and wrapping the conductor shielding layer, the XLPE insulating layer, the insulating shielding layer and the embedded body outside the copper core conductor in a co-extrusion mode, wherein the embedded body is laid in the middle of the insulating shielding layer, and then extruding and wrapping the metal shielding layer on the outermost side to obtain the optical fiber composite core;

s4, stranding 3 optical fiber composite cores into a cable, simultaneously adding a polypropylene rope for filling, then wrapping an inner protection layer and extruding an isolation sleeve, and finally armoring and extruding an outer protection layer to obtain the embedded optical fiber temperature measurement integrated cable.

Further, the optical fiber filler strip in step S1 is a polypropylene strip.

Further, the embedded body is laid in the middle of the insulating shielding layer in a sine wave form in the step S2.

In the process, the embedding body is laid in the middle of the insulating shielding layer in the sine wave form in the step S3, and the sensitivity and the effectiveness of optical fiber temperature measurement can be improved by laying in the sine wave form.

The utility model has the advantages that:

the utility model provides an optical fiber cable to non-metallic material is the protective layer of optic fibre bundle, in contrast traditional method, sets up metal conduit and adopts the mode that the oleamen is fixed, the utility model provides a protective layer has the electric field distribution that does not influence the cable, avoids the advantage to the harmful effects of electric power safety operation, simultaneously, is suitable for the environmental requirement of cable construction and electric power operation more.

And simultaneously, the utility model discloses the well optical fiber cable outside has stranded paper rope or rope made of hemp around the package, chooses for use paper rope or rope made of hemp as soft wire rod around establishing in the optical fiber cable outside, and at first soft wire rod is more docile, and when optical fiber cable received radial external force, soft wire rod played certain cushioning effect, and soft wire rod texture is softer simultaneously, can provide certain removal space for optical fiber cable, plays certain guard action.

Finally, the utility model discloses when the production cable, adopt the sine wave form to lay the embedding body (with the soft wire rod of stranded around the package in the optic fibre cable outside, form the embedding body) at the insulation shield middle part, improved the sensitivity and the validity of optic fibre bundle temperature measurement.

Drawings

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

Fig. 1 is a schematic structural view of an optical fiber cable according to the present invention;

FIG. 2 is a schematic view of the structure of the optical fiber composite core of the present invention;

FIG. 3 is a schematic structural view of the embedded optical fiber temperature measurement integrated cable of the present invention;

fig. 4 is a schematic structural diagram of the insert of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. an optical fiber cable; 11. a fiber optic bundle; 12. a protective sleeve; 2. soft wire material; 3. a copper-core conductor; 4. an inner shield layer; 41. a conductor shield layer; 42. XLPE insulating layer; 43. an insulating shield layer; 44. a metal shielding layer; 5. a protective layer; 51. a filling layer; 52. an inner protective layer; 53. an isolation sleeve; 54. an armor layer; 55. an outer jacket; 6. an insert.

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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Please refer to fig. 1-4, an embedded optical fiber temperature measurement integrated cable, the present invention relates to an embedded optical fiber temperature measurement integrated cable, which comprises a copper core conductor 3, an inner shield layer 4 and a protective layer 5, wherein the inner shield layer 4 is coated outside the copper core conductor 3 to isolate the conductor, prevent current leakage and limit the electric field and electromagnetic interference. The protective layer 5 is used to protect the copper core conductor 3 and the inner shield layer 4 from external force.

The inner shielding layer 4 comprises a conductor shielding layer 41, an XLPE insulating layer 42, an insulating shielding layer 43 and a metal shielding layer 44 from inside to outside in sequence, wherein the conductor shielding layer 41 and the insulating shielding layer 43 are made of semiconductor electric tapes; the XLPE insulating layer 42 is made of cross-linked polyethylene; the material of the metal shielding layer 44 is copper tape.

The protective layer 5 comprises a filling layer 51, an inner protection layer 52, an isolation sleeve 53, an armor layer 54 and an outer protection layer 55 from inside to outside in sequence, wherein the filling layer 51 is made of polypropylene ropes; the inner protective layer 52 and the outer protective layer 55 are made of polyvinyl chloride; the isolation sleeve 53 is made of polytetrafluoroethylene; the armor layer 54 is made of steel tape.

Optical fiber cable 1 lays in insulation shield 43, and the optical fiber cable 1 outside is around having stranded soft wire 2, and soft wire 2 can select paper rope or rope made of hemp, and optical fiber cable 1 includes optic fibre bundle 11 and cladding protective sheath 12 in the optic fibre bundle 11 outside, and the raw materials of protective sheath 12 are modified polyvinyl chloride elastomer.

The production process of the embedded optical fiber temperature measurement integrated cable comprises the following steps:

s1, twisting a plurality of copper wire bundles and then twisting the copper wire bundles again to form a copper core conductor 3;

s1, twisting a polypropylene strip and 6 optical fibers in a 0+6 twisting mode to form an optical fiber bundle 11, extruding and wrapping a modified polyvinyl chloride elastomer on the outer side of the optical fiber bundle 11 to form a protective sleeve 12 to manufacture an optical fiber cable 1, and wrapping a plurality of strands of soft wires 2 on the outer side of the optical fiber cable 1 to form an embedded body 6;

s3, extruding and wrapping the conductor shielding layer 41, the XLPE insulating layer 42, the insulating shielding layer 43 and the embedded body 6 on the outer side of the copper core conductor 3 in a co-extrusion mode, wherein the embedded body 6 is laid in the middle of the insulating shielding layer 43 in a sine wave mode, and then extruding and wrapping the metal shielding layer 44 on the outermost side to obtain the optical fiber composite core;

s4, stranding 3 optical fiber composite cores into a cable, adding a polypropylene rope for filling, then wrapping an inner protection layer 52 and extruding an isolation sleeve 53, and finally sheathing and extruding an outer protection layer 55 to obtain the embedded optical fiber temperature measurement integrated cable.

The utility model discloses the embedded optic fibre temperature measurement integral type cable of preparation, in contrast traditional method, set up the metal conduit and adopt the mode that the oleamen is fixed, the utility model provides a protective layer 5 is non-metallic material and dry-type structure, does not influence the electric field distribution of cable, avoids the harmful effects to electric power safe operation, simultaneously, is suitable for the environmental requirement of cable construction and electric power operation more, and 1 outside of optic fibre cable has stranded paper rope or rope made of hemp around the package, and certain buffering and guard action are played to soft paper rope or rope made of hemp.

In the description of the specification, reference to the description of "one embodiment," "an example," "a specific example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is merely exemplary and illustrative of the structure of the invention and various modifications, additions or substitutions as are known to those skilled in the art may be made to the described embodiments without departing from the scope of the invention as defined in the accompanying claims.

Claims

1. The embedded optical fiber temperature measurement integrated cable comprises a copper core conductor (3), an inner shielding layer (4) and a protective layer (5), and is characterized in that an optical fiber cable (1) is laid in the inner shielding layer (4);

the inner shielding layer (4) is sequentially provided with a conductor shielding layer (41), an XLPE insulating layer (42), an insulating shielding layer (43) and a metal shielding layer (44) from inside to outside; the optical fiber cable (1) is laid in the insulation shielding layer (43), and a plurality of strands of soft wires (2) are wound on the outer side of the optical fiber cable (1); the protective layer (5) is sequentially provided with a filling layer (51), an inner protective layer (52), an isolating sleeve (53), an armor layer (54) and an outer protective layer (55) from inside to outside.

2. The embedded optical fiber temperature measurement integrated cable according to claim 1, wherein the optical fiber cable (1) comprises an optical fiber bundle (11) and a rubber protective sleeve (12) covering the outer side of the optical fiber bundle (11).

3. The embedded optical fiber temperature measurement integrated cable according to claim 1, wherein the soft wire (2) is a paper rope or a hemp rope.

4. The embedded optical fiber temperature measurement integrated cable according to claim 1, wherein the copper core conductor (3) is formed by twisting a plurality of copper wire bundles and then performing complex twisting; the optical fiber filling bar and 6 optical fibers are twisted by adopting a 0+6 twisting mode to form an optical fiber bundle (11); a plurality of strands of soft wires (2) are wrapped on the outer side of the optical fiber cable (1) to form an embedded body (6).

5. The embedded optical fiber temperature measurement integrated cable according to claim 4, wherein the optical fiber filler strip is a polypropylene strip.

6. The embedded optical fiber temperature measurement integrated cable according to claim 4, wherein the embedded body (6) is laid in the middle of the insulation shielding layer (43) in a sine wave form.