CN101950620B - Sectional type submarine cable - Google Patents
Sectional type submarine cable Download PDFInfo
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- CN101950620B CN101950620B CN2010102814985A CN201010281498A CN101950620B CN 101950620 B CN101950620 B CN 101950620B CN 2010102814985 A CN2010102814985 A CN 2010102814985A CN 201010281498 A CN201010281498 A CN 201010281498A CN 101950620 B CN101950620 B CN 101950620B
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- 239000004020 conductor Substances 0.000 claims abstract description 11
- 229920000573 polyethylene Polymers 0.000 claims description 9
- 229910052755 nonmetal Inorganic materials 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims 1
- 230000004888 barrier function Effects 0.000 claims 1
- 229910052725 zinc Inorganic materials 0.000 claims 1
- 239000011701 zinc Substances 0.000 claims 1
- 239000002184 metal Substances 0.000 abstract description 29
- 229910052751 metal Inorganic materials 0.000 abstract description 29
- 239000004698 Polyethylene Substances 0.000 description 8
- -1 polyethylene Polymers 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 229910001335 Galvanized steel Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000008397 galvanized steel Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
本发明公开了一种分段式海底电缆，包括导体，所述导体上由内向外依次设有内半导电层、绝缘层、外半导电层、金属套、铠装层和外被层，该分段式海底电缆分为水下埋设段和陆上埋设段两部分，其中水下埋设段部分的金属套与铠装层之间设有半导电非金属套，陆上埋设段部分的金属套与铠装层之间设有绝缘非金属套。该海底电缆既能消除金属套与铠装层之间的感应电势，减少能量损耗，又能有效提高海底电缆的载流量。
The invention discloses a segmented submarine cable, which comprises a conductor, and the conductor is provided with an inner semiconductive layer, an insulating layer, an outer semiconductive layer, a metal sheath, an armor layer and an outer covering layer sequentially from the inside to the outside. The segmented submarine cable is divided into two parts: an underwater buried section and an onshore buried section, in which a semi-conductive non-metallic sleeve is provided between the metal sheath and the armored layer of the underwater buried section, and the metal sheath of the onshore buried section An insulating non-metallic sleeve is provided between the armor layer and the armor layer. The submarine cable can not only eliminate the induced potential between the metal sheath and the armor layer, reduce energy loss, but also effectively increase the carrying capacity of the submarine cable.
Description
技术领域 technical field
本发明涉及一种海底电缆，特别涉及一种分段式的采用非金属套的海底电缆。The invention relates to a submarine cable, in particular to a segmented submarine cable with a non-metal sheath.
背景技术 Background technique
目前，海底电缆一般在金属护套上会产生感应电势，所以需要采用接地的方法来进行消除，使之安全运行，但是这样又会产生环流损耗，使电缆的载流量大大降低，不能充分利用电缆导体的载流能力，在一定程度上造成了资源浪费。现有的海底电缆的结构一般都在金属护套外面添加一层聚乙烯护套，使之作为海底电缆的防腐层，并具有绝缘性能。为了消除海底电缆金属护套与铠装层之间的电势差，一般做法是每隔500米左右将聚乙烯护套剥开，把一根或多根编织铜线的一端焊接在金属护套上，另一端通过聚乙烯护套的开口与钢丝铠装相接触，从而消除金属护套与铠装层之间的电势差。但采用这种方法敷设的电缆，其金属护套放电不均匀，聚乙烯护套上的开口处也容易脱开，容易使电缆进水，防腐效果无法满足。At present, submarine cables generally generate induced potential on the metal sheath, so it is necessary to use grounding methods to eliminate it and make it run safely. However, this will cause circulation loss, which greatly reduces the carrying capacity of the cable, and cannot make full use of the cable. The current-carrying capacity of the conductor has caused a waste of resources to a certain extent. The structure of the existing submarine cable generally adds a layer of polyethylene sheath outside the metal sheath, so that it can be used as the anti-corrosion layer of the submarine cable and has insulating properties. In order to eliminate the potential difference between the metal sheath and the armor layer of the submarine cable, the general practice is to peel off the polyethylene sheath every 500 meters or so, and weld one or more braided copper wires to the metal sheath. The other end is in contact with the steel wire armor through the opening of the polyethylene sheath, thereby eliminating the potential difference between the metal sheath and the armor layer. However, for cables laid by this method, the discharge of the metal sheath is not uniform, and the openings on the polyethylene sheath are also easy to disengage, which easily causes water to enter the cable, and the anti-corrosion effect cannot be satisfied.
针对上述问题，中国发明专利(专利号：CN200720192300.X)提供了一种海底电缆，这种海底电缆在铅套与铠装层之间设置了半导电聚乙烯防腐层，通过该半导电聚乙烯防腐层使铅套上产生的感应电势直接接地消除，而不需要破坏内衬层，使铅套的放电均匀，效果好，而且电缆不会进水，防腐效果好，而且加工制造也比较简单。但由于海底电缆并不是完全敷设在水下的，其登陆点离变电站尚有几百米的距离，这段距离因为是埋设在陆地上，而采用上述结构的电缆其在陆地上的载流量要小于水下部分，因此陆地上埋设的这段电缆会对整根海底电缆的载流量造成限制，影响整根海底电缆的载流量。In view of the above problems, the Chinese invention patent (patent number: CN200720192300.X) provides a submarine cable, which is provided with a semi-conductive polyethylene anti-corrosion layer between the lead sheath and the armor layer, through which the semi-conductive polyethylene The anti-corrosion layer can directly eliminate the induced potential generated on the lead sleeve without destroying the inner lining layer, so that the discharge of the lead sleeve is uniform, the effect is good, and the cable will not enter water, the anti-corrosion effect is good, and the processing and manufacturing are relatively simple. However, because the submarine cable is not completely laid underwater, its landing point is still several hundred meters away from the substation. This distance is buried on land, and the carrying capacity of the cable with the above structure on land is higher than that of the substation. It is smaller than the underwater part, so the section of cable buried on land will limit the ampacity of the entire submarine cable and affect the ampacity of the entire submarine cable.
发明内容 Contents of the invention
针对上述现有技术的不足，本发明要解决的技术问题是提供一种既能消除金属护套与铠装层之间的感应电势，又能有效提高电缆载流量的海底电缆。Aiming at the deficiencies of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a submarine cable which can not only eliminate the induced potential between the metal sheath and the armor layer, but also effectively increase the ampacity of the cable.
为解决上述技术问题，本发明采用如下技术方案：In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:
一种分段式海底电缆，包括导体，所述导体上由内向外依次设有内半导电层、绝缘层、外半导电层、金属套、铠装层和外被层，该分段式海底电缆分为水下埋设段和陆上埋设段两部分，其中所述水下埋设段的金属套与铠装层之间设有半导电非金属套，所述陆上埋设段的金属套与铠装层之间设有绝缘非金属套。A segmented submarine cable, including a conductor, the conductor is provided with an inner semiconductive layer, an insulating layer, an outer semiconductive layer, a metal sheath, an armor layer and an outer layer in sequence from the inside to the outside. The cable is divided into two parts: an underwater buried section and an onshore buried section, wherein a semi-conductive non-metallic sheath is provided between the metal sheath and the armored layer of the underwater buried section, and the metal sheath and the armored layer of the onshore buried section There is an insulating non-metallic sleeve between the layers.
优选的，所述铠装层为镀锌钢丝铠装层。Preferably, the armor layer is a galvanized steel wire armor layer.
优选的，所述半导电非金属套采用半导电聚乙烯材料。Preferably, the semiconductive non-metallic sleeve is made of semiconductive polyethylene material.
上述技术方案具有如下有益效果：该分段式海底电缆分为水下埋设段和陆上埋设段两部分，在水下埋设段的金属套与铠装层之间设置半导电非金属套，该半导电非金属套可使金属套上产生的感应电势直接接地消除，使金属套的放电均匀，有效降低能量损耗，而且不需要破坏内衬层，，能保证电缆不会进水，防腐效果好；而陆上埋设段的金属套与铠装层之间设置为绝缘非金属套，这样在陆地上埋设时，这段电缆的载流量就不会变小，可保证整个海底电缆拥有较大的载流量。因此采用该结构的海底电缆既可以消除金属套与铠装层之间的感应电势，减少能量损耗，又能有效提高海底电缆的载流量。The above technical scheme has the following beneficial effects: the segmented submarine cable is divided into two parts: an underwater buried section and an onshore buried section, and a semi-conductive non-metallic sleeve is arranged between the metal sleeve and the armored layer of the underwater buried section. The semi-conductive non-metallic sleeve can directly eliminate the induced potential generated on the metal sleeve, so that the discharge of the metal sleeve is uniform, effectively reducing energy loss, and does not need to damage the inner lining, which can ensure that the cable will not enter water and has a good anti-corrosion effect ; while an insulating non-metallic sleeve is set between the metal sleeve and the armor layer of the buried section on land, so that when it is buried on land, the current carrying capacity of this section of the cable will not become smaller, which can ensure that the entire submarine cable has a larger Ampacity. Therefore, the submarine cable with this structure can not only eliminate the induced potential between the metal sheath and the armor layer, reduce energy loss, but also effectively increase the carrying capacity of the submarine cable.
上述说明仅是本发明技术方案的概述，为了能够更清楚了解本发明的技术手段，并可依照说明书的内容予以实施，以下以本发明的较佳实施例并配合附图详细说明如后。本发明的具体实施方式由以下实施例及其附图详细给出。The above description is only an overview of the technical solutions of the present invention. In order to understand the technical means of the present invention more clearly and implement them according to the contents of the description, the preferred embodiments of the present invention and accompanying drawings are described in detail below. The specific embodiment of the present invention is given in detail by the following examples and accompanying drawings.
附图说明 Description of drawings
图1为本发明实施例的结构示意图。Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
图2为本发明实施例水下埋设段的剖视图。Fig. 2 is a cross-sectional view of an underwater buried section according to an embodiment of the present invention.
图3为本发明实施例陆上埋设段的剖视图。Fig. 3 is a cross-sectional view of the buried section on land according to the embodiment of the present invention.
具体实施方式 Detailed ways
下面结合附图对本发明的优选实施例进行详细介绍。Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
如图1、2、3所示，该分段式海底电缆包括导体1，导体1上由内向外依次设有内半导电层2、绝缘层3、外半导电层4、金属套5、铠装层7和外被层8，铠装层7为镀锌钢丝铠装层。该分段式海底电缆分为水下埋设段10和陆上埋设段11两部分，其中水下埋设段10的金属套5与铠装层7之间设有半导电非金属套6，该半导电非金属套6采用半导电聚乙烯材料。陆上埋设段11的金属套5与铠装层7之间设有绝缘非金属套9。As shown in Figures 1, 2, and 3, the segmented submarine cable includes a
该海底电缆的整个制造过程与一般海底电缆基本相同，导体1经过正规绞合后，把内半导电层2、绝缘层3、外半导电层4由内到外同时挤出到导体1的外面，然后包上金属套5，接着在水下埋设段10的金属套上挤上半导电非金属套6，而在陆上埋设段11的金属套上挤上绝缘非金属套9，最后再在整根电缆上裹上铠装层7、外被层8，这样整个电缆的加工即可完成，加工工艺非常的简单。The entire manufacturing process of the submarine cable is basically the same as that of the general submarine cable. After the
该分段式海底电缆水下埋设段10上的半导电非金属套6可使金属套5上产生的感应电势直接接地消除，使金属套5的放电均匀，有效降低能量损耗，而且不需要破坏内衬层，能保证电缆不会进水，防腐效果好；而陆上埋设段11在金属套与铠装层采用绝缘非金属套9，当该段电缆在陆地上埋设时，这段电缆的载流量是不会变小，这样就能保证整个海底电缆拥有较大的载流量。因此采用该结构的海底电缆既可以消除金属套与铠装层之间的感应电势，减少能量损耗，又能有效提高海底电缆的载流量。The semi-conductive non-metallic sheath 6 on the underwater buried
以上对本发明实施例所提供的分段式海底电缆进行了详细介绍，对于本领域的一般技术人员，依据本发明实施例的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制，凡依本发明设计思想所做的任何改变都在本发明的保护范围之内。The segmented submarine cable provided by the embodiment of the present invention has been introduced in detail above. For those of ordinary skill in the art, according to the idea of the embodiment of the present invention, there will be changes in the specific implementation and application range. As mentioned above, the contents of this specification should not be construed as limiting the present invention, and any changes made according to the design concept of the present invention are within the protection scope of the present invention.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102814985A CN101950620B (en) | 2010-09-14 | 2010-09-14 | Sectional type submarine cable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102814985A CN101950620B (en) | 2010-09-14 | 2010-09-14 | Sectional type submarine cable |
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| CN101950620A CN101950620A (en) | 2011-01-19 |
| CN101950620B true CN101950620B (en) | 2012-01-04 |
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| EP3183736B1 (en) | 2014-08-21 | 2019-11-20 | Materion Corporation | Wire for deep water transmission |
| CN110415881A (en) * | 2019-08-21 | 2019-11-05 | 圣安电缆有限公司 | A multifunctional composite island power cable and its manufacturing process |
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| JPH06325625A (en) * | 1993-05-10 | 1994-11-25 | Furukawa Electric Co Ltd:The | Submarine power cable |
| JP3641529B2 (en) * | 1996-09-17 | 2005-04-20 | 株式会社フジクラ | Oil-immersed paper solid DC submarine cable |
| CN201130552Y (en) * | 2007-10-31 | 2008-10-08 | 宁波东方电缆股份有限公司 | Undersea cable |
| CN101807450B (en) * | 2010-03-29 | 2012-10-31 | 浙江省电力公司舟山电力局 | Sea electric power cable |
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Address after: 200093 No. 1000, military road, Shanghai, Yangpu District Patentee after: SHANGHAI ELECTRIC CABLE RESEARCH INSTITUTE Co.,Ltd. Address before: 200093 No. 1000, military road, Shanghai, Yangpu District Patentee before: SHANGHAI ELECTRIC CABLE Research Institute |
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Application publication date: 20110119 Assignee: China Aviation Baosheng Ocean Engineering Cable Co.,Ltd. Assignor: SHANGHAI ELECTRIC CABLE RESEARCH INSTITUTE Co.,Ltd. Contract record no.: X2022320000100 Denomination of invention: Segmented submarine cable Granted publication date: 20120104 License type: Exclusive License Record date: 20220613 |
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