WO2016190824A1 - Boîtiers de liaison étanches à l'eau et très résistants pour liaison transversale de systèmes de câbles à très haute tension - Google Patents

Boîtiers de liaison étanches à l'eau et très résistants pour liaison transversale de systèmes de câbles à très haute tension Download PDF

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Publication number
WO2016190824A1
WO2016190824A1 PCT/TR2015/000215 TR2015000215W WO2016190824A1 WO 2016190824 A1 WO2016190824 A1 WO 2016190824A1 TR 2015000215 W TR2015000215 W TR 2015000215W WO 2016190824 A1 WO2016190824 A1 WO 2016190824A1
Authority
WO
WIPO (PCT)
Prior art keywords
cable
earthing
link box
enclosure body
coaxial
Prior art date
Application number
PCT/TR2015/000215
Other languages
English (en)
Inventor
Sadettin ERDENİZ
Original Assignee
Em Elektri̇k Malzemeleri̇ Yükleni̇m Sanayi̇ Ti̇caret Anoni̇m Şi̇rketi̇
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Em Elektri̇k Malzemeleri̇ Yükleni̇m Sanayi̇ Ti̇caret Anoni̇m Şi̇rketi̇ filed Critical Em Elektri̇k Malzemeleri̇ Yükleni̇m Sanayi̇ Ti̇caret Anoni̇m Şi̇rketi̇
Priority to PCT/TR2015/000215 priority Critical patent/WO2016190824A1/fr
Publication of WO2016190824A1 publication Critical patent/WO2016190824A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/08—Cable junctions
    • H02G15/10—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
    • H02G15/103—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes with devices for relieving electrical stress
    • H02G15/105—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes with devices for relieving electrical stress connected to the cable shield only
    • H02G15/1055—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes with devices for relieving electrical stress connected to the cable shield only with cross-bonding of cable shields
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/013—Sealing means for cable inlets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/08—Cable junctions
    • H02G15/10—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
    • H02G15/113—Boxes split longitudinally in main cable direction

Definitions

  • the present invention relates generally to field of electric extra high voltage cable systems.
  • the invention especially relates to a heavy-duty and water- proof link box for cross bonding of metallic sheathes of extra high voltage cable system.
  • High voltage cables have a metallic sheath, along which a voltage is induced as a function of the operating current.
  • bonding and earthing of cable sheathes at cable joints and terminations is performed. Methods such as single-point bonding and cross bonding can be used respectively in short length and long length high voltage cables.
  • Link Box can be viewed as protective housing safeguarding all the related components and bonding and earthing connections are made through removable links. This allows disconnecting the individual cable sheathes for sheath testing and also establishes the integrity of sheath. If required link boxes contain sheath voltage limiters to limit induced lightning or switching overvoltages of cable system.
  • Link boxes are commonly used devices in cable systems but ordinary link boxes cannot meet requirements of extra high voltage cable systems in extreme environmental conditions with an economical way. Extra high voltage cables and their accessories are expensive assets which require specially designed link boxes. For example, thermal and mechanical effects of very high short circuit level of extra high voltage cable systems will lead to failure of ordinary link boxes. Another condition which cannot be met by ordinary link boxes is withstanding against internal arc. When an internal arc occurs inside the ordinary link boxes, increased pressure of air inside the box will lead to explosion that may be dangerous to nearby equipment or persons. Another feature which is not available in ordinary link boxes is long-time resistance to submersion in water. Link boxes installed in underground manholes may be subjected to water immersion due to flood for example.
  • the Application No. CN20158451 U relates to special connector for coaxial cable.
  • Another application which has been encountered as a result of the technical researches is the Patent No. US5052946 which relates to a plug connector for high-voltage coaxial cables.
  • neither of the applications have a novelty which aims to solve the aforementioned drawbacks.
  • the invention configured by being inspired by the current conditions, aims to solve the above mentioned drawbacks.
  • the present invention has many features which make it special rather than ordinary link boxes:
  • the present invention is a link box which provides cross bonding of metallic sheathes of extra high voltage cable system and comprises
  • disconnectable crossing bars which are used to provide a cross connection between inner conductor of coaxial bonding cable related to 1th phase and wire screen of coaxial bonding cable related to 2nd phase characterized in comprising;
  • adjustable sealing plugs which provide sealing for cable gland and coaxial bonding and earthing cables and act as an interface between cable gland and coaxial bonding cables / earthing cable for water-proof penetration of coaxial bonding cables / earthing cable into enclosure body.
  • said link box is comprising clamping system of coaxial bonding cables which provide fixing wide range and high-cross section coaxial bonding cables to enclosure body and also separating main inner conductor and wire screen and the clamping system comprises
  • the link box is comprising clamping system of earthing cable which provides fixing wide range and high- cross section earthing cables to enclosure body and comprises
  • said enclosure body, enclosure cover, sealing gasket and domed rivet nuts comprise fixing bolt holes fixing the enclosure cover to the enclosure body by means of fixing bolts on same axis
  • said domed rivet nuts comprise an o-ring which prevents ingress of water from surface of enclosure body and a leaning surface which provides uniformly distribution of forces on enclosure body and protecting integrity of link box.
  • said domed rivet nuts are made of stainless steel and sealing gasket is made from EPD . According to another preferred embodiment of the present invention,
  • said sealing gasket is one-piece continuous structure and comprises embedded channels and embedded o-rings contact surface with domed rivet nut prevent ingress of water or dust
  • said adjustable sealing plug are fixed to the coaxial bonding cables, earthing cable and cable gland by means of cable ties and
  • said mastic tape is wrapped around junction points of adjustable sealing plug-cable gland and adjustable sealing plug-coaxial bonding cables or earthing cable which prevents ingress of water from surface of coaxial bonding cables / earthing cable also surface of cable gland into enclosure body.
  • Figure 1 is an exploded view of present invention
  • Figure 2 is an assembled view of present invention.
  • Figure 3 shows clamping system of coaxial cables.
  • FIG. 4 shows earthing cable clamping system in detail.
  • Figure 5 shows cross-sectionai view of connection between enclosure cover and enclosure body.
  • Figure 6 shows sealing gasket of enclosure cover.
  • Figure 7 shows details of domed rivet nut with o-ring.
  • Figure 8 shows cross-sectional view of cable gland sealing system.
  • the invention relates to a heavy-duty and water- proof link box (100) for cross bonding of metallic sheathes of extra high voltage cable joints.
  • Fig.1 is an exploded view of present invention.
  • Present invention mainly includes of an enclosure body (1) which all other components are placed inside and an enclosure cover (2) which can be seen as upper part for the link box (100). All internal components are mounted on supporting insulators (8) which are used also to electrical isolation of energized components from enclosure body (1). These insulators (8) are fastened to enclosure body (1) via a base plate (13).
  • Fig.2 is an assembled view of present invention.
  • Coaxial bonding cable (18) and single earthing cable (19) are assembled during installation of link box (100) on site.
  • Three coaxial bonding cables (18) are used to connect metallic sheathes of three-phase high voltage cable joint to link box (100).
  • One earthing cable (19) is used to connect earthing busbar (10) to earthing electrodes outside of the link box (100).
  • Fig.3 shows clamping system of coaxial bonding cables (18). Each coaxial bonding cable
  • disconnectable crossing bar (9) are used to provide a cross connection between inner conductor (18A) of coaxial bonding cable (18) related to 1th phase and wire screen (18B) of coaxial bonding cable (18) related to 2nd phase.
  • One side of surge voltage limiters (11) is connected to disconnectable crossing bars (9) and another side is connected to common point of earthing busbar (10).
  • Fig.4 shows earthing cable (19) clamping system in detail.
  • Each earthing cable (19) includes mainly of conductor (19A) and conductor insulation (19B).
  • single cable fixing clamp (7) made of hard alloy material provides a hard-soft connection between single cable fixing clamp (7) and conductor (19A).
  • Fig.5 shows cross-sectional view of connection between enclosure cover (2) and enclosure body (1).
  • Connection between enclosure cover (2) and enclosure body (1) is made by a sealing gasket (3) as well as some domed rivet nuts (12) with o-ring (12A).
  • These two components provide sealed and tight connection between enclosure body (1) and enclosure cover (2).
  • This connection method prevents ingress of water or dust into link box (100) even when it submerged in water. Also, it plays a critical role during internal arc. Details of each component is discussed below.
  • Fig.6 shows sealing gasket (3) of enclosure cover (2).
  • Sealing gasket (3) made from EPD (ethylene propylene diene terpolymer) plays an important role in enhancing water proof feature of present invention. Its one-piece continuous structure, flexibility of its material, embedded channels (3A) and embedded o-rings (3B) contact surface with domed rivet nut (12) prevents ingress of water or dust and also guarantees its long-term sealing performance.
  • enclosure body (1), enclosure cover (2) and sealing gasket (3) have fixing bolt holes (21) which provide fixing the enclosure cover (2) to the enclosure body (1) by means of fixing bolts (20) on same axis.
  • domed rivet nuts (12) are also mounted on enclosure body (1) thanks to fixing bolt holes (21).
  • Fig. 7 shows details of domed rivet nut (12) with o-ring (12A).
  • Main two functions of this component includes: (i) along with sealing gasket (3) provides a water proof connection between enclosure body (1) and enclosure cover (2) (ii) provides tight connection between enclosure body (1) and enclosure cover (2) so link box (100) shall remain integrated during internal arc.
  • First function is achieved with specially designed contact surface between domed rivet nut (12) and sealing gasket (3) as well as embedded o-ring (12A) inside domed rivet nut (12).
  • Aforementioned o-ring (12A) prevents ingress of water from surface of enclosure body (1).
  • domed rivet nut (12) plays a critical role during internal arc.
  • temperature heats up and expands the air in the enclosure body (1).
  • Increased pressure exerts severe mechanical forces on fixing bolt (20) upward causing force to domed rivet nut (12).
  • Leaning surface (12B) of each domed rivet nut (12) causes to uniformly distribution of forces on enclosure body (1). Accordingly, integrity of link box (100) is maintained.
  • Fig.8 shows cross-sectional view of cable gland (14) sealing system. Cable gland (14) sealing system provides a water-proof penetration of coaxial bonding cables (18) and earthing cable (19) into enclosure body (1).
  • First step includes insertion of an adjustable sealing plug (4) on both coaxial bonding and earthing cable (18, 19) and cable gland (14). Prior to this step, two ends of adjustable sealing plug (4) are cut according to coaxial bonding and earthing cable (18, 19) diameter. This component made from EPDM rubber and acts as an interface between bonding cables and cable gland (14). Two cable ties (15) are used to fix adjustable sealing plug (4) at two points.
  • mastic tape (16) is wrapped around adjustable sealing plug (4)-cable gland (14) and adjustable sealing plug (4)-bonding cable (coaxial bonding cables (18) or earthing cable (19)) junction points.
  • This filling mastic tape (16) prevents ingress of water from surface of bonding cables and also surface of cable gland (14) into enclosure body (1).
  • a heat-shrinkable tube (17) with glue is used to cover all of the components.

Landscapes

  • Cable Accessories (AREA)

Abstract

L'invention concerne un boîtier de liaison (100) étanche à l'eau et très résistant pour une liaison transversale de gaines métalliques d'un système de câble à très haute tension constitué de rivets/écrous en forme de dôme (12) et d'un joint d'étanchéité (3), qui permet d'obtenir une connexion étanche et scellée entre un corps d'enceinte (1) et un couvercle d'enceinte (2), empêche l'entrée d'eau ou de poussière dans le boîtier de liaison (100), même lorsqu'il est immergé dans l'eau et protège l'intégrité du boîtier de liaison (100) lorsque se produit un défaut d'arc interne, ainsi que des bouchons d'étanchéité réglables (4) qui assurent l'étanchéité d'un presse-étoupe (14) et de câbles de mise à la terre et de liaison coaxiale (18, 19) et agissent en tant qu'interface entre le presse-étoupe (14) et les câbles de liaison coaxiale (18) / câble de mise à la terre (19) pour la pénétration étanche à l'eau de câbles de liaison coaxiale (18) / câble de mise à la terre (19) dans le corps d'enceinte (1) et des brides de fixation (5) de câble coaxial et des brides de fixation (6) d'extrémité de câble pour fixer étroitement et séparer un conducteur interne (18A) et un treillis métallique (18B) d'une bride de fixation de câbles de liaison coaxiale (18) et de câbles uniques (7) pour fixer le câble de mise à la terre (19).
PCT/TR2015/000215 2015-05-28 2015-05-28 Boîtiers de liaison étanches à l'eau et très résistants pour liaison transversale de systèmes de câbles à très haute tension WO2016190824A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/TR2015/000215 WO2016190824A1 (fr) 2015-05-28 2015-05-28 Boîtiers de liaison étanches à l'eau et très résistants pour liaison transversale de systèmes de câbles à très haute tension

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/TR2015/000215 WO2016190824A1 (fr) 2015-05-28 2015-05-28 Boîtiers de liaison étanches à l'eau et très résistants pour liaison transversale de systèmes de câbles à très haute tension

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WO2016190824A1 true WO2016190824A1 (fr) 2016-12-01

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107860951A (zh) * 2017-12-28 2018-03-30 广东正力通用电气有限公司 一种城市照明供电线路监测终端
CN109193548A (zh) * 2018-10-24 2019-01-11 深圳供电局有限公司 一种带工频及高频互感器高压电缆线路交叉互连箱
US10686308B1 (en) 2019-04-05 2020-06-16 hvGrid-tech Inc. Sheath-bonding link box
CN112803336A (zh) * 2020-12-31 2021-05-14 中网电力科技有限公司 一种四变二线夹
US11183828B1 (en) 2020-06-12 2021-11-23 hvGrid-tech Inc. Device with health monitoring
US20220166199A1 (en) * 2019-04-05 2022-05-26 hvGrid-tech Inc. Sheath-bonding link box
US11522264B2 (en) * 2020-03-27 2022-12-06 Taoglas Group Holdings Limited Water-resistant element, external connection wire module, antenna box module and method of fixing a water-resistant element at a housing

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5052946A (en) 1990-10-24 1991-10-01 Haug Gmbh & Co. Kg Plug connector for high-voltage coaxial cables
WO1993010585A1 (fr) * 1991-11-16 1993-05-27 Bowthorpe Plc Boite de raccordement destinee a des cables
WO1994009542A1 (fr) * 1992-10-09 1994-04-28 Mkm Magyar Kábel Muvek Részvénytársaság Appareil pour la deconnexion et la transposition du blindage metallique de cables
EP1564857A1 (fr) * 2004-02-10 2005-08-17 Schneider Electric Industries SAS Boíte métallique notamment pour organes électriques
US20100040433A1 (en) * 2008-08-18 2010-02-18 Andreas Poppe Connecting element, in particular a speed nut
CN201584514U (zh) 2009-12-25 2010-09-15 江苏省电力公司无锡供电公司 同轴电缆专用接插件
CN203674680U (zh) * 2013-12-25 2014-06-25 浙江万马集团电气有限公司 一种密封防洪型交叉互联接地箱

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5052946A (en) 1990-10-24 1991-10-01 Haug Gmbh & Co. Kg Plug connector for high-voltage coaxial cables
WO1993010585A1 (fr) * 1991-11-16 1993-05-27 Bowthorpe Plc Boite de raccordement destinee a des cables
WO1994009542A1 (fr) * 1992-10-09 1994-04-28 Mkm Magyar Kábel Muvek Részvénytársaság Appareil pour la deconnexion et la transposition du blindage metallique de cables
EP1564857A1 (fr) * 2004-02-10 2005-08-17 Schneider Electric Industries SAS Boíte métallique notamment pour organes électriques
US20100040433A1 (en) * 2008-08-18 2010-02-18 Andreas Poppe Connecting element, in particular a speed nut
CN201584514U (zh) 2009-12-25 2010-09-15 江苏省电力公司无锡供电公司 同轴电缆专用接插件
CN203674680U (zh) * 2013-12-25 2014-06-25 浙江万马集团电气有限公司 一种密封防洪型交叉互联接地箱

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
EMELEC ELEKTRIK: "EM Elektrik Malzemeleri Yüklenim San. Tic. Ltd. Sti.", 12 July 2012 (2012-07-12), XP055249707, Retrieved from the Internet <URL:http://web.archive.org/web/20120712194515/http://www.emelec.com.tr/LinkBoxTestDownload.aspx> [retrieved on 20160212] *
EMELEC ELEKTRIK: "TT 0710/01 TYPE TEST OF 3 Phase Cross Bonding Link Box, Type: LB.U.CB.3SA.3.1", 12 July 2012 (2012-07-12), pages 0 - 51, XP055249706, Retrieved from the Internet <URL:http://www.emelec.com.tr/download/testbox/TT0710-01 IPH-UCB.pdf> [retrieved on 20160212] *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107860951A (zh) * 2017-12-28 2018-03-30 广东正力通用电气有限公司 一种城市照明供电线路监测终端
CN107860951B (zh) * 2017-12-28 2024-05-24 广东正力通用电气有限公司 一种城市照明供电线路监测终端
CN109193548A (zh) * 2018-10-24 2019-01-11 深圳供电局有限公司 一种带工频及高频互感器高压电缆线路交叉互连箱
CN109193548B (zh) * 2018-10-24 2024-02-23 深圳供电局有限公司 一种带工频及高频互感器高压电缆线路交叉互连箱
US10686308B1 (en) 2019-04-05 2020-06-16 hvGrid-tech Inc. Sheath-bonding link box
WO2020198875A1 (fr) * 2019-04-05 2020-10-08 hvGrid-tech Inc. Boîte de connexions de liaison de gaine
US20220166199A1 (en) * 2019-04-05 2022-05-26 hvGrid-tech Inc. Sheath-bonding link box
US11522264B2 (en) * 2020-03-27 2022-12-06 Taoglas Group Holdings Limited Water-resistant element, external connection wire module, antenna box module and method of fixing a water-resistant element at a housing
US11183828B1 (en) 2020-06-12 2021-11-23 hvGrid-tech Inc. Device with health monitoring
CN112803336A (zh) * 2020-12-31 2021-05-14 中网电力科技有限公司 一种四变二线夹
CN112803336B (zh) * 2020-12-31 2022-03-08 中网电力科技有限公司 一种四变二线夹

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