CN212061988U - On-line monitoring safety type medium-voltage photoelectric composite cable - Google Patents
On-line monitoring safety type medium-voltage photoelectric composite cable Download PDFInfo
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- CN212061988U CN212061988U CN202020946767.4U CN202020946767U CN212061988U CN 212061988 U CN212061988 U CN 212061988U CN 202020946767 U CN202020946767 U CN 202020946767U CN 212061988 U CN212061988 U CN 212061988U
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Abstract
The utility model discloses an on-line monitoring safety type medium-voltage photoelectric composite cable, which comprises a belting layer, an oxygen isolation layer and an outer sheath; a cable core support is arranged in the band layer, a nonmetal reinforcing part is arranged in the cable core support, a plurality of cable core grooves are formed in the cable core support, a cable core monomer is arranged in each cable core groove, a molded line filling strip is arranged in a gap between each cable core monomer, the cable core support and the band layer, an optical fiber groove is formed in one side of each molded line filling strip, and an optical fiber unit tightly attached to the cable core monomer is arranged in each optical fiber groove. The utility model discloses a light unit structure that sets up on the contact surface of the shaping packing strip of cable and middling pressure electric power sinle silk realizes the online temperature sensing monitoring of cable full length to with the unusual sudden rise of middling pressure circuit monitoring temperature and the feedback of reporting to the police of signals such as lasting intensification, make relevant personnel in time adopt appropriate measure to control, reach the target of fire alarm prevention or elimination ignition source.
Description
Technical Field
The utility model relates to a middling pressure power cable field especially relates to an online monitoring safety type middling pressure photoelectric composite cable.
Background
With the development of national economic technology, the social electrification degree is continuously improved, and the power consumption requirement is steadily increased. Medium voltage distribution lines are widely used in cable tunnels of power substations of power plants, high-rise buildings, large hospitals and factories, civil buildings, and cities, and therefore, line safety of medium voltage cables is very important. In the past fires in China, the proportion of electrical fires exceeds 40 percent, and the fire is the largest of various fire factors. The technical means for fire early warning is an effective fire prevention measure, can fully guarantee the life safety of people, and reduces the property loss.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an online monitoring safety type medium voltage photoelectric composite cable solves the problem that medium voltage power cable does not have conflagration early warning measure.
In order to solve the technical problem, the utility model adopts the following technical scheme:
the utility model relates to an online monitoring safety type medium-voltage photoelectric composite cable, including the band layer that is wrapped by the rubber coating glass fiber strap that the overlap ratio is not less than 35%, the oxygen layer that separates that the outside crowded package one deck oxygen index is not less than 45% of band layer, the outer jacket that the outside crowded package one deck was made by the low fire-retardant polyolefin material of halogen-free cigarette that separates the oxygen layer;
the cable core support is arranged in the band layer, the nonmetal reinforcing part is arranged in the cable core support, a plurality of cable core grooves are formed in the cable core support, a cable core monomer is arranged in each cable core groove, a molded line filling strip is arranged in a gap between each cable core monomer, the cable core support and the band layer, an optical fiber groove is formed in one side of each molded line filling strip, and an optical fiber unit tightly attached to the corresponding cable core monomer is arranged in each optical fiber groove.
Furthermore, the cable core monomer sequentially comprises a metal conductor, a conductor shielding layer, an insulating shielding layer and a metal shielding layer from inside to outside.
Furthermore, the exposed volume of the optical fiber unit accounts for 1/6-1/3 of the whole volume.
Furthermore, the optical fiber unit comprises a protective tube made of stainless steel strips through seamless welding, a plurality of multimode optical fibers are arranged in the protective tube, and a gap between each multimode optical fiber and the protective tube is filled with fiber paste.
Furthermore, a semiconductor layer made of a semiconductive polyolefin material is arranged on the outer wall of the protective tube.
Furthermore, the non-metal reinforcing part is made of polyaromatic aramid synthetic fiber or Kevlar fiber.
Compared with the prior art, the utility model discloses a beneficial technological effect:
the utility model discloses a light unit structure that sets up on the contact surface of the shaping packing strip of cable and middling pressure electric power sinle silk realizes the online temperature sensing monitoring of cable full length to with the unusual sudden rise of middling pressure circuit monitoring temperature and the feedback of reporting to the police of signals such as lasting intensification, make relevant personnel in time adopt appropriate measure to control, reach the target of fire alarm prevention or elimination ignition source.
Drawings
The present invention will be further explained with reference to the following description of the drawings.
Fig. 1 is a schematic cross-sectional structure view of the on-line monitoring safety type medium-voltage photoelectric composite cable of the present invention;
FIG. 2 is a schematic structural view of the cable core support of the present invention;
fig. 3 is a schematic structural view of the molded line filler strip of the present invention;
fig. 4 is a schematic structural diagram of the optical fiber unit of the present invention.
Description of reference numerals: 1. a belting layer; 2. an oxygen barrier layer; 3. an outer sheath; 4. a cable core support; 401. a non-metallic reinforcement; 402. a cable core groove; 5. a cable core monomer; 501. a conductor; 502. a conductor shield layer; 503. an insulating layer; 504. an insulating shield layer; 505. a metal shielding layer; 6. a molded line filling strip; 601. an optical fiber groove; 7. an optical fiber unit; 701. protecting the pipe; 702. a multimode optical fiber; 703. a semiconductor layer.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1, the embodiment discloses an online monitoring safety type medium-voltage photoelectric composite cable, which includes a belting layer 1 wrapped by a coated glass fiber cloth tape with an overlapping rate not lower than 35%, an oxygen-blocking layer 2 with an oxygen index not lower than 45% extruded on the outer side of the belting layer 1, and an outer sheath 3 made of a halogen-free low-smoke flame-retardant polyolefin material extruded on the outer side of the oxygen-blocking layer 2.
As shown in fig. 2, a cable core support 4 made of a flame retardant material is arranged in the belting layer 1, a plurality of cable core grooves 402 are arranged on the cable core support 4, and a cable core monomer 5 is arranged in each cable core groove 402. The cable core support 4 isolates each cable core monomer 5, so that two adjacent cable core monomers 5 are not contacted with each other, and heat transfer is avoided. In order to strengthen the strength of the cable, a non-metal reinforcing member 401 is arranged in the cable core support 4, and the non-metal reinforcing member 401 is made of high-strength polyaromatic aramid synthetic fiber or Kevlar fiber.
The cable core monomer 5 comprises a conductor 501 formed by pressing and twisting a plurality of high-conductivity copper, aluminum or aluminum alloy wires, a conductor shielding layer 502, an insulating layer 503 and an insulating shielding layer 504 are extruded outside the conductor 501 in a three-layer co-extrusion mode, and a metal shielding layer 505 is wound outside the insulating shielding layer 504. The metal shielding layer 505 may be a shielding structure of copper wire shielding or copper tape shielding.
As shown in fig. 3, a molded line filler 6 is disposed in a gap between the cable core monomer 5, the cable core support 4 and the belting layer 1, the molded line filler 6 is made of a halogen-free low-smoke flame-retardant polyolefin material, an optical fiber groove 601 is disposed on one side of the molded line filler 6, and an optical fiber unit 7 tightly attached to the cable core monomer 5 is disposed in the optical fiber groove 601. The optical fiber unit 7 realizes the on-line temperature sensing monitoring of the whole length of the cable, and gives an alarm for the signals of abnormal sudden rise and continuous temperature rise of the monitoring temperature of the medium-voltage line and the like for feedback, so that related personnel can control the temperature in time by adopting proper measures to achieve the aim of preventing or eliminating the ignition source by fire alarm
In the embodiment, the exposed volume of the optical fiber unit 7 accounts for 1/6-1/3 of the whole volume.
As shown in fig. 4, the optical fiber unit 7 includes a protective tube 701 made of 304L stainless steel strips by seamless welding, a plurality of multimode optical fibers 702 are disposed in the protective tube 701, and a gap between the multimode optical fibers 702 and the protective tube 701 is filled with a fiber paste.
A semiconductor layer 703 made of a semiconductive polyolefin material is provided on the outer wall of the sheath 701. Due to the presence of the semiconductor layer 703, the risk of galvanic corrosion between the metal shielding layer 505 and the optical fiber unit 7 is eliminated.
The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.
Claims (6)
1. The utility model provides an online monitoring safety type intermediate-pressure photoelectric composite cable which characterized in that: the oxygen-insulating and flame-retardant plastic composite belt comprises a belting layer (1) formed by wrapping rubber-coated glass fiber cloth tapes with the overlapping rate of not less than 35%, an oxygen-insulating layer (2) with the oxygen index of not less than 45% is extruded on the outer side of the belting layer (1), and an outer sheath (3) made of a halogen-free low-smoke flame-retardant polyolefin material is extruded on the outer side of the oxygen-insulating layer (2);
be provided with cable core support (4) in band layer (1), be provided with non-metal reinforcement (401) in cable core support (4), be provided with a plurality of cable core recesses (402) on cable core support (4), every all be provided with cable core monomer (5) in cable core recess (402), cable core monomer (5), cable core support (4) with be provided with molded lines filler strip (6) in the space between band layer (1), one side of molded lines filler strip (6) is provided with optic fibre groove (601), be provided with in optic fibre groove (601) and hug closely optic fibre unit (7) of cable core monomer (5).
2. The on-line monitoring safety type medium-voltage photoelectric composite cable according to claim 1, wherein: the cable core monomer (5) sequentially comprises a metal conductor (501), a conductor shielding layer (502), an insulating layer (503), an insulating shielding layer (504) and a metal shielding layer (505) from inside to outside.
3. The on-line monitoring safety type medium-voltage photoelectric composite cable according to claim 1, wherein: the exposed volume of the optical fiber unit (7) accounts for 1/6-1/3 of the whole volume.
4. The on-line monitoring safety type medium-voltage photoelectric composite cable according to claim 1, wherein: the optical fiber unit (7) comprises a protective pipe (701) which is made of stainless steel strips through seamless welding, a plurality of multimode optical fibers (702) are arranged in the protective pipe (701), and fiber paste is filled in a gap between each multimode optical fiber (702) and the protective pipe (701).
5. The on-line monitoring safety type medium-voltage photoelectric composite cable according to claim 4, wherein: the outer wall of the protective pipe (701) is provided with a semiconductor layer (703) made of a semi-conductive polyolefin material.
6. The on-line monitoring safety type medium-voltage photoelectric composite cable according to claim 1, wherein: the non-metal reinforcing part (401) is made of polyaromatic aramid synthetic fiber or Kevlar fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020946767.4U CN212061988U (en) | 2020-05-29 | 2020-05-29 | On-line monitoring safety type medium-voltage photoelectric composite cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020946767.4U CN212061988U (en) | 2020-05-29 | 2020-05-29 | On-line monitoring safety type medium-voltage photoelectric composite cable |
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| Publication Number | Publication Date |
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| CN212061988U true CN212061988U (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020946767.4U Active CN212061988U (en) | 2020-05-29 | 2020-05-29 | On-line monitoring safety type medium-voltage photoelectric composite cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117854823A (en) * | 2024-03-07 | 2024-04-09 | 西安华联电力电缆有限公司 | High-reliability photovoltaic cable |
-
2020
- 2020-05-29 CN CN202020946767.4U patent/CN212061988U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117854823A (en) * | 2024-03-07 | 2024-04-09 | 西安华联电力电缆有限公司 | High-reliability photovoltaic cable |
| CN117854823B (en) * | 2024-03-07 | 2024-07-26 | 西安华联电力电缆有限公司 | High-reliability photovoltaic cable |
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