CN210142528U - Cable with a protective layer - Google Patents
Cable with a protective layer Download PDFInfo
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- CN210142528U CN210142528U CN201921359750.2U CN201921359750U CN210142528U CN 210142528 U CN210142528 U CN 210142528U CN 201921359750 U CN201921359750 U CN 201921359750U CN 210142528 U CN210142528 U CN 210142528U
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Abstract
A cable comprises at least three cable cores, and a filling layer, a water blocking layer, a composite layer and an outer sheath which are sequentially coated outside the at least three cable cores, wherein each cable core comprises a water blocking conductor, a conductor shielding layer, an insulating shielding layer, a first water blocking tape, a shielding layer, a second water blocking tape, a first composite tape and a first sheath which are sequentially coated from inside to outside, the first sheath is tangent to the filling layer, the outer sides of the at least three cable cores are tangent to form an accommodating space, and a water blocking filling rope is filled in the accommodating space. The utility model provides a cable, from outside oversheath to the inside conductor that blocks water, every layer all can block water, has better water blocking performance, can prevent moisture vertically, radially to invade the cable multiple, high-efficiently, has guaranteed the operation safety of cable.
Description
Technical Field
The utility model relates to a wire and cable makes the field, especially relates to a cable.
Background
Due to construction requirements, part of the cable needs to be laid in water for a long time. Therefore, if the water-blocking effect of the cable is poor, water trees are easily generated on insulation by water vapor in the long-time running process of the cable, the insulation causes breakdown, the service life of the cable is greatly shortened due to the existence of moisture, and the cable must have extremely high water-blocking performance aiming at the laying environment. The common three-core water-blocking cable can only longitudinally block water for the conductor and each layer, and cannot radially block water. Meanwhile, due to the large cabling gap, the used filling cannot effectively prevent water from longitudinally invading, and meanwhile, the used sheath material cannot effectively prevent water from radially entering.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is desirable to provide a cable capable of effectively preventing moisture from entering.
A cable comprises at least three cable cores, and a filling layer, a water blocking layer, a composite layer and an outer sheath which are sequentially coated outside the at least three cable cores, wherein each cable core comprises a water blocking conductor, a conductor shielding layer, an insulating shielding layer, a first water blocking tape, a shielding layer, a second water blocking tape, a first composite tape and a first sheath which are sequentially coated from inside to outside, the first sheath is tangent to the filling layer, the outer sides of the at least three cable cores are tangent to form an accommodating space, and a water blocking filling rope is filled in the accommodating space.
Furthermore, the water blocking conductor comprises a central conductor and a plurality of outer conductor layers which are sequentially twisted by taking the central conductor as an axis, and each outer conductor layer is formed by twisting a plurality of conductors by taking the central conductor as the axis.
Furthermore, a semi-conductive water blocking tape is arranged between the central conductor and each outer conductor layer to prevent moisture from longitudinally invading the water blocking conductor.
Furthermore, the conductor shielding layer is wrapped on the water-blocking conductor in an extruded mode by adopting a semi-conductive material.
Furthermore, the insulating layer is uniformly extruded on the conductor shielding layer by adopting a cross-linked polyethylene material.
Furthermore, the insulation shielding layer comprises insulation wire cores, and a semi-conducting layer which is directly extruded on the outer surface of each insulation wire core and is tightly combined with the insulation wire cores or can be stripped is adopted.
Furthermore, the water-blocking layer is wrapped on the outer layer of the filling layer by adopting a double-sided insulating water-blocking tape.
Furthermore, a filler is arranged in a gap formed by the filling layer and the cable core.
Further, the filling layer is integrally provided with the filler.
Furthermore, a first composite tape is wrapped on the outer side of the second water-blocking tape.
Compared with the prior art, the cable comprises at least three cable cores and the filling layer, the water blocking layer, the composite layer and the outer sheath which are sequentially coated outside the at least three cable cores, the water blocking conductor is arranged from the outer sheath to the inner water blocking conductor, each layer can block water, the better water blocking performance is achieved, moisture can be prevented from longitudinally and radially invading the cable in a multiple and efficient mode, and the operation safety of the cable is guaranteed.
Drawings
Fig. 1 is a schematic structural diagram of a cable according to an embodiment of the present invention.
Description of the main elements
The following detailed description of the invention will be further described in conjunction with the above-identified drawings.
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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, the cable 100 shown in fig. 1 is used for transmitting electric energy, and the cable 100 includes at least three cable cores 10, and a filling layer 20, a water blocking layer 30, a composite layer 40, and an outer sheath 50 sequentially covering the at least three cable cores 10.
Each cable core 10 includes a water blocking conductor 11 and a conductor shielding layer 12 sleeved outside the water blocking conductor 11, and the water blocking conductor 11 includes a central conductor (not shown) and a plurality of outer conductor layers (not shown) twisted in sequence with the central conductor as an axis. Each of the outer conductor layers is formed by twisting a plurality of conductors around a central conductor, and a semi-conductive water-blocking tape is arranged between the central conductor and each of the outer conductor layers, so that moisture is effectively prevented from longitudinally invading the water-blocking conductor 11. The conductor shielding layer 12 is wrapped on the water blocking conductor by adopting a semi-conductive material to prevent the water blocking conductor 11 from generating partial discharge. The outer side of the conductor shielding layer 12 is sleeved with an insulating layer 13, the insulating layer 13 has an insulating effect, and in an embodiment, the insulating layer 13 is uniformly extruded on the conductor shielding layer 12 by using a cross-linked polyethylene material. The insulating layer 13 is sleeved with an insulating and shielding layer 14, and in an embodiment, the insulating and shielding layer 14 comprises insulating wire cores, and then a semi-conducting layer which is directly extruded on the outer surface of each insulating wire core and is tightly combined with or can be stripped from the insulating wire core is adopted. The insulating and shielding water-blocking waterproof structure is characterized in that a first water-blocking tape 15 is wound on the outer side of the insulating and shielding layer 14 in a sleeved mode, a shielding layer 16 is wound on the outer side of the first water-blocking tape 15 in a sleeved mode, a second water-blocking tape 17 is wound on the outer side of the shielding layer 16 in a sleeved mode, in one embodiment, the shielding layer 16 is a copper wire shielding layer, and the first water-blocking tape 15 and the second water-blocking tape 17 are double-sided semi-conductive water-blocking tapes. The first water-blocking tape 15 and the second water-blocking tape 17 swell with water, so that moisture is effectively prevented from longitudinally invading the inside of the cable 100 along the copper wire gap. A first composite tape 18 is wrapped around the second water-blocking tape 17, and the first composite tape 18 can assist the shielding layer 16, carry partial short-circuit current, and effectively prevent moisture from entering the cable 100 in the radial direction. In one embodiment, the first composite tape 18 may be an aluminum-plastic composite tape or a lead sheath. A first sheath 19 is sleeved outside the first composite belt 18, and the first sheath 19 is tangent to the filling layer 20 and used for blocking water. In one embodiment, the first sheath 19 is made of polyethylene material, and the polyethylene material has strong water-blocking performance and effectively prevents moisture from radially invading.
The cable core 10 further includes a water-blocking filling rope 101, the outer sides of the at least three cable cores are tangentially arranged to form an accommodating space (not numbered), and the water-blocking filling rope is filled in the accommodating space. The water-blocking filling rope 101 rapidly expands when encountering water, and prevents water from longitudinally invading the cable core 10. In an embodiment, the number of the cable cores 10 is three, the cross sections of the three cable cores 10 are arranged in a tangent manner, and water-blocking filling ropes 101 are filled in gaps formed by the tangent three cable cores 10.
The filling layer 20 is sleeved outside the cable core 10, and in an embodiment, the filling layer 20 is made of polyethylene material and is produced by die extrusion. A filler 21 is disposed in a gap formed between the filler layer 20 and the cable core 10, and in one embodiment, the filler 21 is integrally disposed with the filler layer 20 and is made of polyethylene. The polyethylene material has high compactness and stronger water resistance, and can prevent moisture from longitudinally and radially invading.
The water-blocking layer 30 is sleeved on the outer side of the filling layer 20, in an embodiment, the water-blocking layer 30 is wrapped on the outer layer of the filling layer 20 by a double-sided insulating water-blocking tape, and the water-blocking layer 30 expands when meeting water, so that moisture is effectively prevented from longitudinally invading the cable 100.
The composite layer 40 is sleeved on the outer side of the water-blocking layer 30, and when the cable 100 is damaged by external force, the composite layer 40 can prevent external moisture from radially invading into the cable. In one embodiment, the composite layer 40 is a lead sheath, which has high compactness, can effectively prevent water from radially invading, and can also carry partial short-circuit current. In other embodiments, the composite layer 40 may also be an aluminum-plastic composite tape.
The outer sheath 50 is sleeved outside the composite layer 40, in an embodiment, the outer sheath 50 is made of a polyethylene material, the polyethylene material is hard and is not easy to break in a construction process, meanwhile, the water blocking effect is good, and moisture is effectively prevented from radially invading the cable 100.
When the cable 100 is used, the water blocking conductor 11, the first water blocking tape 15, the second water blocking tape 17, the first composite tape 18, the first sheath 19, the filling layer 20, the water blocking filling rope 101, the water blocking layer 30, the composite layer 40 and the outer sheath 50 all have water blocking performance, multiple water blocking is achieved from the outer sheath 50 to the inner water blocking conductor 11, and multiple protection is achieved on the cable 100. Meanwhile, water-blocking filling ropes 101 are filled among gaps of the cable cores 10 by using an extrusion process, so that the problems of large cabling gaps and poor water-blocking effect are solved.
According to the cable 100, each layer of the cable from the outer sheath 50 to the inner water blocking conductor 11 can block water, so that the cable has better water blocking performance, can prevent moisture from longitudinally and radially invading the cable in multiple and high-efficiency modes, and ensures the operation safety of the cable.
It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be taken as limiting the present invention, and that suitable modifications and variations of the above embodiments are within the scope of the invention as claimed.
Claims (10)
1. The utility model provides a cable, includes at least three cable core and cladding in proper order the filling layer, the water-blocking layer, composite bed and the oversheath in the at least three cable core outside, its characterized in that: each cable core comprises a water-blocking conductor, a conductor shielding layer, an insulating shielding layer, a first water-blocking tape, a shielding layer, a second water-blocking tape, a first composite tape and a first sheath which are sequentially coated from inside to outside, the first sheath is tangent to the filling layer, the outer sides of at least three cable cores are tangent to form an accommodating space, and a water-blocking filling rope is filled in the accommodating space.
2. The cable of claim 1, wherein: the water blocking conductor comprises a central conductor and a plurality of outer conductor layers which are sequentially twisted by taking the central conductor as an axis, and each outer conductor layer is formed by twisting a plurality of conductors by taking the central conductor as the axis.
3. The cable of claim 2, wherein: and a semi-conductive water blocking tape is arranged between the central conductor and each outer conductor layer to prevent moisture from longitudinally invading the water blocking conductor.
4. The cable of claim 1, wherein: the conductor shielding layer is wrapped on the water-blocking conductor in an extruded mode by adopting a semi-conductive material.
5. The cable of claim 1, wherein: the insulating layer is uniformly extruded on the conductor shielding layer by adopting a cross-linked polyethylene material.
6. The cable of claim 1, wherein: the insulation shielding layer comprises insulation wire cores, and then a semi-conducting layer which is directly extruded on the outer surface of each insulation wire core and is tightly combined with the insulation wire cores or can be stripped is adopted.
7. The cable of claim 1, wherein: and the water-blocking layer is wrapped on the outer layer of the filling layer by adopting a double-sided insulating water-blocking tape.
8. The cable of claim 1, wherein: and a filler is arranged in a gap formed by the filling layer and the cable core.
9. The cable of claim 8, wherein: the filling layer is integrally provided with the filler.
10. The cable of claim 1, wherein: and a first composite tape is wound on the outer side of the second water-blocking tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921359750.2U CN210142528U (en) | 2019-08-21 | 2019-08-21 | Cable with a protective layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921359750.2U CN210142528U (en) | 2019-08-21 | 2019-08-21 | Cable with a protective layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210142528U true CN210142528U (en) | 2020-03-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921359750.2U Active CN210142528U (en) | 2019-08-21 | 2019-08-21 | Cable with a protective layer |
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| Country | Link |
|---|---|
| CN (1) | CN210142528U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111524644A (en) * | 2020-04-30 | 2020-08-11 | 中天科技海缆有限公司 | Submarine cable |
| CN114420388A (en) * | 2022-03-31 | 2022-04-29 | 中天科技海缆股份有限公司 | Preparation device and preparation method of submarine cable |
-
2019
- 2019-08-21 CN CN201921359750.2U patent/CN210142528U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111524644A (en) * | 2020-04-30 | 2020-08-11 | 中天科技海缆有限公司 | Submarine cable |
| CN114420388A (en) * | 2022-03-31 | 2022-04-29 | 中天科技海缆股份有限公司 | Preparation device and preparation method of submarine cable |
| CN114420388B (en) * | 2022-03-31 | 2022-07-08 | 中天科技海缆股份有限公司 | Preparation device and preparation method of submarine cable |
| WO2023185414A1 (en) * | 2022-03-31 | 2023-10-05 | 中天科技海缆股份有限公司 | Submarine cable manufacturing device and manufacturing method |
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Address after: 226010 No. 1 South Road, Nantong economic and Technological Development Zone, Jiangsu, China Patentee after: Zhongtian Technology submarine cable Co., Ltd Address before: 226010 No. 1 South Road, Nantong economic and Technological Development Zone, Jiangsu, China Patentee before: ZHONGTAN TECHNOLOGY SUBMARINE CABLE Co.,Ltd. |