CN219891906U - Ultra-high voltage cable - Google Patents
Ultra-high voltage cable Download PDFInfo
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- CN219891906U CN219891906U CN202321036886.6U CN202321036886U CN219891906U CN 219891906 U CN219891906 U CN 219891906U CN 202321036886 U CN202321036886 U CN 202321036886U CN 219891906 U CN219891906 U CN 219891906U
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- layer
- high voltage
- voltage cable
- insulating
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- 239000000463 material Substances 0.000 claims abstract description 29
- 229910052751 metal Inorganic materials 0.000 claims abstract description 18
- 239000002184 metal Substances 0.000 claims abstract description 18
- 239000004743 Polypropylene Substances 0.000 claims abstract description 12
- 239000013307 optical fiber Substances 0.000 claims abstract description 12
- -1 polypropylene Polymers 0.000 claims abstract description 12
- 229920001155 polypropylene Polymers 0.000 claims abstract description 12
- 239000010410 layer Substances 0.000 claims description 116
- 239000004020 conductor Substances 0.000 claims description 26
- 230000000903 blocking effect Effects 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 6
- 239000003063 flame retardant Substances 0.000 claims description 6
- 239000004831 Hot glue Substances 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 238000003475 lamination Methods 0.000 claims description 5
- 239000004677 Nylon Substances 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 4
- 239000004800 polyvinyl chloride Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000003139 buffering effect Effects 0.000 description 10
- 229920003020 cross-linked polyethylene Polymers 0.000 description 7
- 239000004703 cross-linked polyethylene Substances 0.000 description 7
- 230000005684 electric field Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000010382 chemical cross-linking Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
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- Communication Cables (AREA)
Abstract
The utility model relates to the technical field of power transmission, in particular to an ultrahigh voltage cable. The temperature measuring device comprises an electric core part, wherein an insulating layer is wrapped outside the electric core part, an insulating shielding layer is wrapped outside the insulating layer, a longitudinal water-blocking layer is wrapped outside the insulating shielding layer, a temperature measuring optical fiber is arranged in the longitudinal water-blocking layer, a metal sheath layer is arranged outside the longitudinal water-blocking layer, and an outer sheath layer is wrapped outside the metal sheath layer; the insulating layer is made of polypropylene material. Aiming at the technical problem that part of traditional cable materials restrict the cable performance, the utility model improves the insulation performance and the current-carrying capacity by adopting the polypropylene material as the insulating layer material.
Description
Technical Field
The utility model relates to the technical field of power transmission, in particular to an ultrahigh voltage cable.
Background
Cables using crosslinked polyethylene materials have been known for a long time and are widely used worldwide. In recent years, the development of crosslinked polyethylene power cables is mature, but the maximum working temperature of XLPE insulation is only 90 ℃, so that the cable performance is restricted, the cable cannot be recycled, and crosslinking byproducts are generated in the chemical crosslinking process. With the continuous improvement of the performance requirements of the cable, the defects of the crosslinked polyethylene material make the crosslinked polyethylene material unsuitable for processing, manufacturing and using part of the cable.
Disclosure of Invention
Technical problem to be solved by the utility model
Aiming at the technical problem that part of traditional cable materials restrict the cable performance, the utility model provides an ultrahigh voltage cable, which improves the insulation performance and the current-carrying capacity by adopting a polypropylene material as an insulation layer material.
Technical proposal
In order to solve the problems, the technical scheme provided by the utility model is as follows:
the ultra-high voltage cable comprises an electric core part, wherein an insulating layer is wrapped outside the electric core part, an insulating shielding layer is wrapped outside the insulating layer, a longitudinal water blocking layer is wrapped outside the insulating shielding layer, a temperature measuring optical fiber is arranged in a longitudinal water blocking layer inner clamp, a metal sheath layer is arranged outside the longitudinal water blocking layer, and an outer sheath layer is wrapped outside the metal sheath layer; the insulating layer is made of polypropylene material.
Optionally, the electric core comprises a plurality of conductors, a wrapping shielding layer is wound outside the conductors, and a conductor shielding layer is enveloped outside the wrapping shielding layer.
Optionally, the insulating shielding layer has a wall thickness greater than the conductor shielding layer.
Optionally, the wrap shielding layer is a semi-conductive nylon tape that is overlapped and wrapped.
Optionally, the conductor shielding layer is made of ultra-smooth semi-conductive material.
Optionally, the vertical water blocking layer includes the first layer semi-conductive buffering waterstop, second floor semi-conductive buffering waterstop and the semi-conductive buffering waterstop of third floor of range upon range of encircleing in proper order, temperature measurement optic fibre is located between second floor semi-conductive buffering waterstop and the semi-conductive buffering waterstop of third floor.
Optionally, the insulating shielding layer is made of an ultra-smooth semi-conductive material.
Optionally, the metal sheath layer is an aluminum sheath.
Optionally, a hot melt adhesive layer is arranged between the metal sheath layer and the outer sheath layer.
Optionally, the outer sheath layer comprises a surface sheath layer and a graphite electrode layer which are enveloped in a lamination manner, and the surface sheath layer adopts high flame retardant polyvinyl chloride.
Advantageous effects
Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:
aiming at the technical problem that part of traditional cable materials restrict the cable performance, the utility model adopts the polypropylene material as the insulating layer material, improves the insulating performance and the current-carrying capacity, and can realize the real-time monitoring of the temperature of the ultra-high voltage cable based on the arrangement of the temperature measuring optical fiber.
Drawings
Fig. 1 is a schematic structural diagram of an extra-high voltage cable according to an embodiment of the present utility model.
Detailed Description
For a further understanding of the present utility model, the present utility model will be described in detail with reference to the drawings and examples.
The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be noted that, for convenience of description, only the portions related to the utility model are shown in the drawings. The first, second, etc. words are provided for convenience in describing the technical scheme of the present utility model, and have no specific limitation, and are all generic terms, and do not constitute limitation to the technical scheme of the present utility model. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. The technical schemes in the same embodiment and the technical schemes in different embodiments can be arranged and combined to form a new technical scheme without contradiction or conflict, which is within the scope of the utility model.
Example 1
Referring to fig. 1, this embodiment proposes an extra-high voltage cable, including a core 100, an insulating layer 4 is wrapped outside the core 100, an insulating shielding layer 5 is wrapped outside the insulating layer 4, a longitudinal water-blocking layer 6 is wrapped outside the insulating shielding layer 5, a temperature measuring optical fiber 10 is clamped in the longitudinal water-blocking layer 6, a metal sheath layer 7 is arranged outside the longitudinal water-blocking layer 6, and an outer sheath layer 9 is wrapped outside the metal sheath layer 7; the insulating layer 4 is made of polypropylene material.
According to the ultra-high voltage cable, the polypropylene material is used as the material of the insulating layer 4, so that the insulating performance and the current-carrying capacity are improved, and the temperature can be monitored in real time on the ultra-high voltage cable based on the arrangement of the temperature measuring optical fiber 10.
The electric core 100 of the ultra-high voltage cable of the embodiment mainly comprises a conductor 1, an insulating layer 4 is enveloped outside the electric core, the insulating layer 4 is made of polypropylene material, the polypropylene material has excellent insulating property and temperature resistance grade which are higher than those of the traditional crosslinked polyethylene, the temperature can reach 105 ℃, and compared with the defect that the crosslinked polyethylene insulating material cannot be recycled, a crosslinked byproduct can be generated in the crosslinking process, the polypropylene material has the advantages of plasticization, recycling and the like, so that the comprehensive performance of the ultra-high voltage cable is improved. The use of the polypropylene material in the embodiment has great advantages in improving the current-carrying capacity, and also has unique advantages in simplifying the processing technology, reducing the cost, improving the production rate and the like, so that the ultrahigh voltage cable in the embodiment has better economy.
In this embodiment, the inner clamp of the longitudinal waterproof layer 6 is provided with a temperature measuring optical fiber 10, so as to realize real-time monitoring of the overall temperature of the ultra-high voltage cable, and further improve the safety of the ultra-high voltage cable.
In this embodiment, the metal sheath layer 7 can play a role in protecting the whole ultra-high voltage cable, and the other hair is mainly used for protecting the temperature measuring optical fiber 10.
As an alternative implementation manner of this embodiment, the electric core 100 includes a plurality of conductors 1, a wrapping shielding layer 2 is wound outside the conductors 1, and a conductor shielding layer 3 is enveloped outside the wrapping shielding layer 2. In this embodiment, a plurality of conductors 1 are arranged around a core 100, so that the extra-high voltage cable has higher current carrying capacity, and the conductor 1 is wrapped by a wrapping shielding layer 2, so that the conductor 1 is integrated.
As an alternative to this embodiment, the insulating shield 5 has a greater wall thickness than the conductor shield 3.
As an alternative implementation of this embodiment, the wrapping shielding layer 2 is a semi-conductive nylon tape that is wrapped in an overlapping manner. The wrapping shielding layer 2 is a semi-conductive nylon belt which is overlapped and wrapped, and a smoother interface is provided for structures such as an insulating layer 4 and the like which are wrapped on the outer side.
As an alternative implementation of this embodiment, the conductor shielding layer 3 is made of an ultra-smooth semiconductive material. In this embodiment, the conductor shielding layer 3 is made of an ultra-smooth semiconductive material, which serves to homogenize the electric field on the surface of the conductor 1 and prevent distortion of the electric field, and the conductor shielding layer 3 fills the gap between the outer layers of the stranded conductor 1, so that the contact interface between the insulating layer 4 and the conductor 1 is smooth and round, thereby avoiding the occurrence of partial discharge.
Example 2
Referring to fig. 1, this embodiment proposes an extra-high voltage cable, which can be modified on the basis of embodiment 1 as follows: the longitudinal water blocking layer 6 comprises a first layer of semi-conductive buffering water blocking tape, a second layer of semi-conductive buffering water blocking tape and a third layer of semi-conductive buffering water blocking tape which are sequentially laminated and encircling, and the temperature measuring optical fiber 10 is positioned between the second layer of semi-conductive buffering water blocking tape and the third layer of semi-conductive buffering water blocking tape. In this embodiment, the longitudinal water blocking layer 6 in the lamination arrangement can play a better water blocking effect on one hand, and on the other hand, the clamping of the temperature measuring optical fiber 10 can be realized through the second layer of semi-conductive buffer water blocking tape and the third layer of semi-conductive buffer water blocking tape in the lamination arrangement.
As an alternative implementation of this embodiment, the insulating and shielding layer 5 is made of an ultra-smooth semiconductive material. In this embodiment, the insulating shielding layer 5 is also made of an ultra-smooth semiconductive material, so as to homogenize the electric field on the surface of the insulating shielding layer 5, prevent distortion of the electric field, and make the contact interface between the insulating shielding layer 5 and the metal sheath layer 7 smooth and round, thereby avoiding partial discharge.
As an alternative implementation of this embodiment, the metal sheath layer 7 is an aluminum sheath. In this embodiment, the metal sheath layer 7 is preferably an aluminum sheath, which has the advantage that the aluminum sheath has a corrugated structure with smooth surface, so that the temperature measuring optical fiber 10 can be prevented from being damaged by embossing, and the consumption of the outer sheath material can be saved.
As an alternative implementation of this embodiment, a hot melt adhesive layer 8 is disposed between the metal sheath layer 7 and the outer sheath layer 9. The metal sheath layer 7 and the outer sheath layer 9 are bonded through hot melt adhesive, and the hot melt adhesive layer 8 is formed after hot melt gelation and fixation.
As an alternative implementation of this example, the outer sheath layer 9 includes a surface sheath layer and a graphite electrode layer that are enveloped in a lamination, and the surface sheath layer adopts high flame retardant polyvinyl chloride. In the embodiment, the surface sheath layer adopts high flame retardant polyvinyl chloride, so that the flame retardant effect can be achieved, and the flame retardant effect of the ultra-high voltage cable is improved.
The utility model and its embodiments have been described above by way of illustration and not limitation, and the utility model is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present utility model.
Claims (10)
1. The ultra-high voltage cable is characterized by comprising an electric core part, wherein an insulating layer is wrapped outside the electric core part, an insulating shielding layer is wrapped outside the insulating layer, a longitudinal water-blocking layer is wrapped outside the insulating shielding layer, a temperature measuring optical fiber is arranged in the longitudinal water-blocking layer, a metal sheath layer is arranged outside the longitudinal water-blocking layer, and an outer sheath layer is wrapped outside the metal sheath layer; the insulating layer is made of polypropylene material.
2. The ultra-high voltage cable according to claim 1, wherein the core comprises a plurality of conductors, wherein a wrap shielding layer is wrapped around the exterior of the conductors, and wherein a conductor shielding layer is wrapped around the exterior of the wrap shielding layer.
3. An extra high voltage cable according to claim 2 wherein the insulating shield has a wall thickness greater than the conductor shield.
4. An extra high voltage cable according to claim 2 wherein the wrap shield layer is a laminated wrap of semiconducting nylon tape.
5. An extra high voltage cable according to claim 2 wherein the conductor shield is of an ultra smooth semiconductive material.
6. The ultra-high voltage cable according to claim 1, wherein the longitudinal water blocking layer comprises a first layer of semi-conductive buffer water blocking tape, a second layer of semi-conductive buffer water blocking tape and a third layer of semi-conductive buffer water blocking tape which are sequentially laminated and encircling, and the temperature measuring optical fiber is positioned between the second layer of semi-conductive buffer water blocking tape and the third layer of semi-conductive buffer water blocking tape.
7. An extra high voltage cable according to claim 1 wherein the insulating shield layer is of an ultra smooth semiconductive material.
8. An extra high voltage cable according to claim 1 wherein the metal jacket layer is an aluminum jacket.
9. An extra high voltage cable according to claim 1 wherein a hot melt adhesive layer is provided between the metal sheath layer and the outer sheath layer.
10. The ultra-high voltage cable according to claim 1, wherein the outer sheath layer comprises a surface sheath layer and a graphite electrode layer which are enveloped in a lamination, and the surface sheath layer adopts high flame retardant polyvinyl chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321036886.6U CN219891906U (en) | 2023-05-04 | 2023-05-04 | Ultra-high voltage cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321036886.6U CN219891906U (en) | 2023-05-04 | 2023-05-04 | Ultra-high voltage cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219891906U true CN219891906U (en) | 2023-10-24 |
Family
ID=88404026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321036886.6U Active CN219891906U (en) | 2023-05-04 | 2023-05-04 | Ultra-high voltage cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219891906U (en) |
-
2023
- 2023-05-04 CN CN202321036886.6U patent/CN219891906U/en active Active
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