CN215183247U - Intelligent monitoring high-waterproof ultrahigh-voltage power cable - Google Patents
Intelligent monitoring high-waterproof ultrahigh-voltage power cable Download PDFInfo
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- CN215183247U CN215183247U CN202121317448.8U CN202121317448U CN215183247U CN 215183247 U CN215183247 U CN 215183247U CN 202121317448 U CN202121317448 U CN 202121317448U CN 215183247 U CN215183247 U CN 215183247U
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Abstract
The utility model relates to a high waterproof superhigh pressure power cable is kept watch on to intelligence, include: the cable comprises a conductor, a first conductor shielding layer, a second conductor shielding layer, an insulating shielding layer, a waterproof aluminum layer, a first longitudinal water-blocking layer, a metal shielding layer provided with a signal transmission optical fiber, a metal belt binding layer, a second longitudinal water-blocking layer, a radial water-blocking layer, an outer protective layer and an outer semi-conducting layer, wherein the first conductor shielding layer, the second conductor shielding layer, the insulating shielding layer, the waterproof aluminum layer, the first longitudinal water-blocking layer, the metal shielding layer provided with the signal transmission optical fiber, the metal belt binding layer, the second longitudinal water-blocking layer, the radial water-blocking layer, the outer protective layer and the outer semi-conducting layer are sequentially coated outside the conductor. The intelligent monitoring high-waterproof ultrahigh-voltage power cable has better waterproof performance and easy monitoring of the temperature of the cable.
Description
Technical Field
The utility model relates to the technical field of cables, especially, relate to a high waterproof superhigh pressure power cable is kept watch on to intelligence.
Background
The structure of the ultra-high voltage power cable can be obtained from the Chinese patent application number: 201520842116.X, a new reinforced ultra-high voltage power cable disclosed by the utility model is known; the cross-linked polyethylene (XLPE) insulated power cable has the advantages of excellent electrical performance and mechanical and physical performance, simple production process, light structure, large transmission capacity, convenience in installation, laying, maintenance and repair, no drop limitation and the like, and is widely applied to the production of ultrahigh-voltage power cables; however, XLPE is very sensitive to moisture, and water tree breakdown is easy to occur if insulation is impregnated with water in the manufacturing and running processes, and the water tree breakdown is finally converted into an electric tree to cause insulation breakdown, loss of insulation performance and damage to the running safety of a cable, so that the service life of the cable is greatly shortened, and even a power failure accident is caused; meanwhile, with the rapid development of cities, the load of a power system is also continuously increased, the transmission capacity of a cable line is inevitably increased, and the current-carrying capacity of the cable line is increased under the condition of the allowable operating temperature of the cable, so that the temperature of the cable is necessarily monitored; the cable overcomes the defects that the traditional ultrahigh-voltage power cable has poor waterproof performance and the temperature of the cable is not easy to monitor; therefore, designing an intelligent monitoring high-waterproof ultrahigh-voltage power cable with good waterproof performance and easy monitoring of cable temperature becomes a problem to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming present superhigh pressure power cable and having the waterproof performance relatively poor, the difficult not enough of monitoring of cable temperature provides a waterproof performance better, and the high waterproof superhigh pressure power cable is kept watch on to intelligence of the easy monitoring of cable temperature.
The utility model discloses a concrete technical scheme is:
an intelligent monitoring highly waterproof ultra-high voltage power cable comprising: the cable comprises a conductor, a first conductor shielding layer, a second conductor shielding layer, an insulating shielding layer, a waterproof aluminum layer, a first longitudinal water-blocking layer, a metal shielding layer provided with a signal transmission optical fiber, a metal belt binding layer, a second longitudinal water-blocking layer, a radial water-blocking layer, an outer protective layer and an outer semi-conducting layer, wherein the first conductor shielding layer, the second conductor shielding layer, the insulating shielding layer, the waterproof aluminum layer, the first longitudinal water-blocking layer, the metal shielding layer provided with the signal transmission optical fiber, the metal belt binding layer, the second longitudinal water-blocking layer, the radial water-blocking layer, the outer protective layer and the outer semi-conducting layer are sequentially coated outside the conductor.
Preferably, the metal shielding layer is formed by sparsely winding a plurality of copper wires.
Preferably, the signal transmission optical fiber consists of two temperature measuring optical fibers which are sparsely wound together with the copper wire of the metal shielding layer; the temperature measuring optical fiber is a seamless stainless steel pipe temperature measuring optical cable.
Preferably, the first conductor shielding layer is formed by wrapping a semi-conductive water-blocking tape; the first longitudinal waterproof layer is formed by overlapping and wrapping a semiconductive waterproof tape with the cover overlapping rate of more than 40%; the second longitudinal water-blocking layer is formed by overlapping and wrapping a semi-conductive water-blocking tape.
Preferably, the material of the conductor second shielding layer is a semi-conductive material; the material of the insulation shielding layer is a semi-conductive material. The semiconductive material is acetic acid or vinyl acetate copolymer or conductive carbon black.
Preferably, the conductor is formed by twisting a plurality of annealed copper conductors or aluminum conductors.
Preferably, the insulating layer is a crosslinked polyethylene insulating layer; the waterproof aluminum layer is a sprayed aluminum layer; the metal strap binding layer is formed by spirally wrapping a copper strap and binding the copper wire; the radial water-resistant layer is formed by longitudinally wrapping an aluminum-plastic composite belt.
Preferably, the outer protective layer is a high-density polyethylene sheath; the outer semi-conductive layer is a graphite spray coating layer or a semi-conductive material layer.
Compared with the prior art, the invention has the beneficial effects that: the intelligent monitoring high-waterproof ultrahigh-voltage power cable is provided with a first conductor shielding layer formed by winding a semiconductive water-blocking tape, a first longitudinal water-blocking layer formed by winding the semiconductive water-blocking tape, a second longitudinal water-blocking layer formed by winding the semiconductive water-blocking tape, a waterproof aluminum layer formed by spraying an aluminum layer, a radial water-blocking layer formed by longitudinally wrapping an aluminum-plastic composite tape, and a waterproof structure formed by multiple water-blocking or waterproof materials, and is provided with a signal transmission optical fiber which is formed by two temperature measurement optical fibers which are wound together with copper wires of the metal shielding layer and is communicated with a temperature measurement optical fiber host machine, so that the temperature of the cable can be monitored online in real time, the hidden danger of a circuit can be found in time, the accident can be avoided, the waterproof performance is good, and the temperature of the cable is easy to monitor; the all-round water blocking to the super high voltage power cable is realized, and the service life of the cable in normal operation is ensured. When the copper wire of the metal shielding layer is used for shielding, the two seamless stainless steel pipe temperature measuring optical cables are directly wound in a sparse mode, the process of sparsely winding the optical fiber is omitted, and time and labor are saved. The radial water-blocking layer adopts a structure of longitudinally-wrapped aluminum-plastic composite belts, and compared with a corrugated aluminum sheath high-voltage cable, the radial water-blocking layer is smaller in outer diameter, lighter in weight and lower in cost. The waterproof aluminum layer is formed by uniformly spraying a thin layer of aluminum powder on the insulating shielding layer, so that water is prevented in the radial direction, and the effect of homogenizing an electric field of the shielding layer is enhanced; the first longitudinal water-blocking layer is a layer of overlapped and wrapped semi-conductive water-blocking tape with the covering rate of more than 40%, and the second longitudinal water-blocking layer is a layer of overlapped and wrapped semi-conductive water-blocking tape, so that water blocking in the longitudinal direction is realized; the radial waterproof layer is a longitudinally wrapped aluminum-plastic composite tape, so that longitudinal and radial all-directional water blocking effects can be achieved. The second shielding layer of the conductor is made of a semi-conductive material, the insulating shielding layer is made of a semi-conductive material, and the outer semi-conductive layer is a graphite spray coating layer or a semi-conductive material layer, so that an electric field can be balanced, and partial discharge between the conductor and the insulating layer can be avoided.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: the cable comprises a conductor 1, a first conductor shielding layer 2, a second conductor shielding layer 3, an insulating layer 4, an insulating shielding layer 5, a waterproof aluminum layer 6, a first longitudinal water-resistant layer 7, a metal shielding layer 8 provided with signal transmission optical fibers, a metal belt binding layer 9, a second longitudinal water-resistant layer 10, a radial water-resistant layer 11, an outer protective layer 12, an outer semi-conducting layer 13 and temperature measurement optical fibers 14.
Detailed Description
The invention will be further described with reference to the drawings.
As shown in fig. 1: an intelligent monitoring highly waterproof ultra-high voltage power cable comprising: the cable comprises a conductor 1, a first conductor shielding layer 2, a second conductor shielding layer 3, an insulating layer 4, an insulating shielding layer 5, a waterproof aluminum layer 6, a first longitudinal water-resistant layer 7, a metal shielding layer 8 provided with a signal transmission optical fiber, a metal belt binding layer 9, a second longitudinal water-resistant layer 10, a radial water-resistant layer 11, an outer protection layer 12 and an outer semi-conducting layer 13, wherein the first conductor shielding layer, the second conductor shielding layer and the insulating shielding layer are sequentially coated outside the conductor 1.
The metal shielding layer 8 is formed by sparsely winding a plurality of copper wires.
The signal transmission optical fiber consists of two temperature measuring optical fibers 14 which are sparsely wound together with the copper wires of the metal shielding layer 8; the temperature measuring optical fiber 14 is a seamless stainless steel tube temperature measuring optical cable.
The first conductor shielding layer 2 is formed by overlapping and wrapping a semi-conductive water-blocking tape with the covering rate of more than 40%; the first longitudinal water-blocking layer 7 is formed by overlapping and wrapping a semi-conductive water-blocking tape; the second longitudinal water-blocking layer 10 is formed by wrapping a semi-conductive water-blocking tape.
The material of the conductor second shielding layer 3 is a semi-conductive material; the material of the insulating shield layer 5 is a semiconducting material.
The conductor 1 is formed by twisting a plurality of annealed copper conductors 1 or aluminum conductors 1.
The insulating layer 4 is a crosslinked polyethylene insulating layer 4; the waterproof aluminum layer 6 is a sprayed aluminum layer; the metal strap binding layer 9 is formed by spirally wrapping a copper strap and binding copper wires; the radial water-resistant layer 11 is formed by longitudinally wrapping an aluminum-plastic composite belt.
The outer protective layer 12 is a high-density polyethylene sheath; the outer semiconducting layer 13 is a graphite sprayed layer or a semiconducting material layer.
In addition to the above embodiments, the technical features or technical data of the present invention can be selected and combined again within the scope disclosed in the claims and the specification of the present invention to constitute new embodiments, which can be realized by those skilled in the art without creative efforts, and therefore, the embodiments of the present invention not described in detail should be regarded as specific embodiments of the present invention and within the protection scope of the present invention.
Claims (8)
1. An intelligent monitoring highly waterproof ultra-high voltage power cable comprising: the conductor, characterized by, the intelligent monitoring high waterproof superhigh pressure power cable still include: the cable comprises a first conductor shielding layer, a second conductor shielding layer, an insulating shielding layer, a waterproof aluminum layer, a first longitudinal water-resistant layer, a metal shielding layer provided with a signal transmission optical fiber, a metal belt binding layer, a second longitudinal water-resistant layer, a radial water-resistant layer, an outer protective layer and an outer semi-conducting layer which are sequentially coated outside the conductor.
2. The intelligent monitoring high waterproof ultra-high voltage power cable according to claim 1, wherein the metal shielding layer is formed by copper wires in a sparse winding manner.
3. The intelligent monitoring high-waterproof ultrahigh-voltage power cable according to claim 2, wherein the signal transmission optical fiber is composed of two temperature measuring optical fibers which are sparsely wound together with a copper wire of the metal shielding layer.
4. The intelligent monitoring high waterproof extra-high voltage power cable according to claim 1, 2 or 3, wherein the conductor first shielding layer is formed by winding a semi-conductive water blocking tape; the first longitudinal waterproof layer is formed by wrapping a semi-conductive waterproof tape; the second longitudinal water-blocking layer is formed by wrapping a semi-conductive water-blocking tape.
5. The intelligent monitoring high waterproof extra-high voltage power cable according to claim 1, 2 or 3, wherein the material of the second shielding layer of the conductor is a semi-conductive material; the material of the insulation shielding layer is a semi-conductive material.
6. A smart surveillance high watertight ultra high voltage power cable according to claim 1, 2 or 3, wherein the conductor is formed by stranding a plurality of annealed copper or aluminum conductors.
7. The intelligent monitoring high waterproof extra-high voltage power cable according to claim 1, 2 or 3, wherein the insulating layer is a crosslinked polyethylene insulating layer; the waterproof aluminum layer is a sprayed aluminum layer; the metal strap binding layer is formed by spirally wrapping a copper strap and binding the copper wire; the radial water-resistant layer is formed by longitudinally wrapping an aluminum-plastic composite belt.
8. The intelligent monitoring high waterproof extra-high voltage power cable of claim 1, 2 or 3, wherein the outer sheath is a high density polyethylene sheath; the outer semi-conductive layer is a graphite spray coating layer or a semi-conductive material layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121317448.8U CN215183247U (en) | 2021-06-11 | 2021-06-11 | Intelligent monitoring high-waterproof ultrahigh-voltage power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121317448.8U CN215183247U (en) | 2021-06-11 | 2021-06-11 | Intelligent monitoring high-waterproof ultrahigh-voltage power cable |
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| CN215183247U true CN215183247U (en) | 2021-12-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107507672A (en) * | 2016-06-14 | 2017-12-22 | 江苏宝安电缆有限公司 | A kind of high waterproof high-pressure cable |
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2021
- 2021-06-11 CN CN202121317448.8U patent/CN215183247U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107507672A (en) * | 2016-06-14 | 2017-12-22 | 江苏宝安电缆有限公司 | A kind of high waterproof high-pressure cable |
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