CN214956123U - Medium-voltage waterproof power cable - Google Patents
Medium-voltage waterproof power cable Download PDFInfo
- Publication number
- CN214956123U CN214956123U CN202121637351.5U CN202121637351U CN214956123U CN 214956123 U CN214956123 U CN 214956123U CN 202121637351 U CN202121637351 U CN 202121637351U CN 214956123 U CN214956123 U CN 214956123U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000009413 insulation Methods 0.000 claims abstract description 12
- 150000001875 compounds Chemical class 0.000 claims abstract description 7
- 239000010410 layer Substances 0.000 claims description 56
- 239000004020 conductor Substances 0.000 claims description 50
- 239000002131 composite material Substances 0.000 claims description 13
- 239000011241 protective layer Substances 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 229920003020 cross-linked polyethylene Polymers 0.000 claims description 3
- 239000004703 cross-linked polyethylene Substances 0.000 claims description 3
- 229920001903 high density polyethylene Polymers 0.000 claims description 3
- 239000004700 high-density polyethylene Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 abstract description 14
- 238000012856 packing Methods 0.000 abstract description 11
- 238000005253 cladding Methods 0.000 abstract description 4
- 230000008595 infiltration Effects 0.000 abstract description 4
- 238000001764 infiltration Methods 0.000 abstract description 4
- 239000000945 filler Substances 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000005192 partition Methods 0.000 abstract description 2
- 230000017105 transposition Effects 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 240000005572 Syzygium cordatum Species 0.000 description 1
- 235000006650 Syzygium cordatum Nutrition 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of power transmission equipment, concretely relates to middling pressure waterproof power cable, including cable core, compound inner sheath, armor, outer jacket, the cable core outside is around wrapping the band that blocks water, and the band outside that blocks water cladding has compound inner sheath, the compound inner sheath outside cladding has the armor, the armor outside cladding has the outer jacket; the cable core is three-core insulation core strands and is formed, is provided with the packing strip between the insulation core, the packing strip is the partition type filler element that blocks water, form circular cable core through the packing strip between the insulation core, through setting up the packing strip, around package water blocking area, inner sheath can realize radial and vertical the blocking water of cable simultaneously, lay in that moisture is heavier and shoal area, can prevent effectively that moisture from passing through the outer sheath and entering into inside the cable core, if the cable outer sheath is damaged, because the existence of vertical block water structure, can prevent that moisture from getting into inside the cable, prevent along the vertical infiltration of cable core, guarantee cable life.
Description
Technical Field
The utility model belongs to the technical field of power transmission equipment, concretely relates to waterproof power cable of middling pressure.
Background
The waterproof cable is mainly used for humid environments or shoals, the voltage level is higher and higher to meet the use requirements along with the increase of industrial electric loads, medium-voltage waterproof cables used in the areas are more and more, common waterproof cables generally adopt expansive materials such as water blocking ropes added in cable cores, the cable cores of the cables can only be guaranteed to have longitudinal water blocking, or a metal composite sheath is adopted to prevent moisture of the external environment, the process can enable the cables to have a radial waterproof function, but the cables are laid in the regions with heavier moisture and shoals, and the moisture cannot be effectively prevented from entering the cable cores through outer protective layers.
SUMMERY OF THE UTILITY MODEL
For solving the above-mentioned problem that exists among the prior art, the utility model provides a waterproof power cable of middling pressure.
The purpose of the utility model can be realized by the following technical scheme:
a medium-voltage waterproof power cable comprises a cable core, a composite inner protection layer, an armor layer and an outer protection layer, wherein a water-blocking wrapping tape is wrapped outside the cable core, the composite inner protection layer is wrapped outside the water-blocking wrapping tape, the armor layer is wrapped outside the composite inner protection layer, and the outer protection layer is wrapped outside the armor layer; the cable core is three-core insulation core strands and is formed, is provided with the packing strip between the insulation core, the packing strip is the partition type filler element that blocks water, form circular cable core through the packing strip between the insulation core, through setting up the packing strip, around package water blocking area, inner sheath can realize radial and vertical the blocking water of cable simultaneously, lay in that moisture is heavier and shoal area, can prevent effectively that moisture from passing through the outer sheath and entering into inside the cable core, if the cable outer sheath is damaged, because the existence of vertical block water structure, can prevent that moisture from getting into inside the cable, prevent along the vertical infiltration of cable core, guarantee cable life.
As the utility model discloses a preferred technical scheme of waterproof power cable of middling pressure, the insulation core includes the conductor, the conductor is the copper conductor, the conductor outside is provided with the conductor shielding layer, the conductor shielding layer outside is provided with the insulating layer, the insulating layer is water-resistant tree crosslinked polyethylene layer, the insulating layer outside is provided with the insulation shielding layer, the insulation shielding layer outside is provided with the semiconduction water-resistant layer, the semiconduction water-resistant layer outside is provided with the metallic shield layer.
As the utility model discloses a preferred technical scheme of waterproof power cable of middling pressure, compound interior sheath constitutes for indulging package aluminum-plastic composite tape and high density polyethylene layer.
As the utility model discloses a preferred technical scheme of waterproof power cable of middling pressure, the conductor forms for many "T" type monofilament transposition, fill the yarn that blocks water between the monofilament, the conductor is 2 types "T" molded lines and sticiss tin-plated copper conductor and adopt heterotypic mould drawing to become special-shaped monofilament again, form through the transposition again, because fill factor reaches 97% and compares with circular transposition conductor, under same nominal cross section and direct current resistance requirement, the conductor has less conductor external diameter, and fill factor is high, the gap is little between the conductor, fill behind the packing strip, be favorable to the realization that the conductor blocks water ability more.
The utility model has the advantages that:
1. the conductor is a 2-type T-shaped line pressed tinned copper conductor, is drawn into a special-shaped monofilament by adopting a special-shaped die and is stranded to form the conductor, and the conductor has smaller conductor outer diameter, high filling coefficient and small gaps among conductors under the requirements of the same nominal section and direct current resistance because the filling coefficient reaches 97 percent compared with that of a round stranded conductor, and is more favorable for realizing the water resistance of the conductor after filling the filling strips.
2. Through setting up the packing strip, can realize radial and vertical the blocking water of cable simultaneously around wrapping water blocking tape, interior sheath, lay in that moisture is heavier and shoal area, can prevent effectively that moisture from entering into the cable core through the outer jacket inside, if the cable outer jacket is damaged, because the existence of vertical structure of blocking water, can prevent that moisture from getting into inside the cable, prevent along the vertical infiltration of cable core, guarantee cable life.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
Fig. 1 is the utility model relates to a waterproof power cable of middling pressure's structural schematic.
Description of the main elements
In the figure: 1. a conductor; 2. a conductor shield layer; 3. an insulating layer; 4. an insulating shield layer; 5. a semiconductive water barrier layer; 6. a metal shielding layer; 7. filling the strip; 8. compounding an inner protective layer; 9. an armor layer; 10. an outer jacket.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
Referring to fig. 1, the medium-voltage waterproof power cable comprises a cable core, a composite inner protective layer 8, an armor layer 9 and an outer protective layer 10, wherein a water-blocking tape is wrapped outside the cable core, the composite inner protective layer 8 is wrapped outside the water-blocking tape, and the composite inner protective layer 8 is formed by longitudinally wrapping an aluminum-plastic composite tape and a high-density polyethylene layer;
an armor layer 9 is coated outside the composite inner protection layer 8, and an outer protection layer 10 is coated outside the armor layer 9; the cable core is formed by twisting three-core insulated wire cores, the filling strips 7 are arranged among the insulated wire cores, the filling strips 7 are isolated water-blocking filling elements, and a circular cable core is formed among the insulated wire cores through the filling strips 7.
In this embodiment, can realize radial and vertical the blocking water of cable simultaneously through setting up filler strip 7, wrapping water blocking area, compound interior sheath 8, lay in that moisture is heavier and shoal area, can prevent effectively that moisture from entering into the cable core through outer jacket 10 inside, if the outer jacket 10 damage of cable, because the existence of vertical water blocking structure, can prevent inside moisture gets into the cable, prevent along the vertical infiltration of cable core, guarantee cable life.
Specifically, the insulated wire core comprises a conductor 1, a filling strip 7 is filled between the conductors 1, the conductor 1 is a copper conductor, the conductor 1 is a 2-type T-shaped line pressed tinned copper conductor, the deformed monofilament is drawn by a deformed die, water blocking yarns are filled between the monofilaments and then the monofilaments are twisted to form the insulated wire core, and the filling coefficient reaches more than 97%, so that compared with the circular twisted conductor 1, the insulated wire core has the advantages that the structure of the conductor 1 has smaller conductor outer diameter under the same nominal section and direct current resistance requirements, the filling coefficient is high, gaps between the conductors 1 are small, and the realization of the water blocking performance of the conductor 1 is more facilitated after the filling strip 7 is filled.
The 1 outside of conductor is provided with conductor shield 2, the 2 outsides of conductor shield are provided with insulating layer 3, insulating layer 3 is water tree cross-linked polyethylene layer, the 3 outsides of insulating layer are provided with insulating shield 4, the 4 outsides of insulating shield are provided with semiconduction water-resistant layer 5, the 5 outsides of semiconduction water-resistant layer are provided with metal shielding layer 6.
The utility model discloses a theory of operation and use flow: conductor 1 is "T" type monofilament transposition, and conductor shielding layer 2, insulating layer 3, insulating shield 4, semiconduction water-resistant layer 5 and metallic shield 6 have set gradually in the conductor 1 outside, and packing 7 is filled between the conductor, and 3 conductors are twisted into the shaping again and form the cable core, and the cable core outside is around wrapping the band that blocks water and again cladding compound inner sheath 8, armor 9, outer jacket 10 in proper order.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not exhaustive and do not limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (4)
1. The utility model provides a waterproof power cable of middling pressure, includes cable core, compound interior sheath (8), armor (9), outer jacket (10), its characterized in that: a water-blocking wrapping tape is wrapped outside the cable core, a composite inner protective layer (8) is wrapped outside the water-blocking wrapping tape, an armor layer (9) is wrapped outside the composite inner protective layer (8), and an outer protective layer (10) is wrapped outside the armor layer (9); the cable core is formed by twisting three-core insulated wire cores, the filling strips (7) are arranged among the insulated wire cores, the filling strips (7) are isolated water-blocking filling elements, and a circular cable core is formed among the insulated wire cores through the filling strips (7).
2. A medium voltage waterproof power cable according to claim 1, characterized in that: the insulation core includes conductor (1), conductor (1) is the copper conductor, conductor (1) outside is provided with conductor shielding layer (2), the conductor shielding layer (2) outside is provided with insulating layer (3), insulating layer (3) are water-resistant tree crosslinked polyethylene layer, the insulating layer (3) outside is provided with insulation shielding layer (4), the insulation shielding layer (4) outside is provided with semiconduction water-resistant layer (5), semiconduction water-resistant layer (5) outside is provided with metallic shield layer (6).
3. A medium voltage waterproof power cable according to claim 1, characterized in that: the composite inner protective layer (8) is composed of a longitudinally-wrapped aluminum-plastic composite belt and a high-density polyethylene layer.
4. A medium voltage waterproof power cable according to claim 2, characterized in that: the conductor (1) is formed by stranding a plurality of T-shaped monofilaments, and water-blocking yarns are filled among the monofilaments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121637351.5U CN214956123U (en) | 2021-07-19 | 2021-07-19 | Medium-voltage waterproof power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121637351.5U CN214956123U (en) | 2021-07-19 | 2021-07-19 | Medium-voltage waterproof power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214956123U true CN214956123U (en) | 2021-11-30 |
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ID=79071935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121637351.5U Active CN214956123U (en) | 2021-07-19 | 2021-07-19 | Medium-voltage waterproof power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214956123U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120199543A (en) * | 2025-05-01 | 2025-06-24 | 江苏江扬新能源电缆有限公司 | A water-blocking aluminum alloy core low-voltage power cable for photovoltaic power generation system and its preparation method |
-
2021
- 2021-07-19 CN CN202121637351.5U patent/CN214956123U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120199543A (en) * | 2025-05-01 | 2025-06-24 | 江苏江扬新能源电缆有限公司 | A water-blocking aluminum alloy core low-voltage power cable for photovoltaic power generation system and its preparation method |
| CN120199543B (en) * | 2025-05-01 | 2025-09-05 | 江苏江扬新能源电缆有限公司 | A water-blocking aluminum alloy core low-voltage power cable for photovoltaic power generation system and its preparation method |
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