WO2020147114A1 - Supporting mechanism for busbar and switchgear - Google Patents

Supporting mechanism for busbar and switchgear Download PDF

Info

Publication number
WO2020147114A1
WO2020147114A1 PCT/CN2019/072355 CN2019072355W WO2020147114A1 WO 2020147114 A1 WO2020147114 A1 WO 2020147114A1 CN 2019072355 W CN2019072355 W CN 2019072355W WO 2020147114 A1 WO2020147114 A1 WO 2020147114A1
Authority
WO
WIPO (PCT)
Prior art keywords
busbars
slots
supporting mechanism
adjacent
coupling
Prior art date
Application number
PCT/CN2019/072355
Other languages
English (en)
French (fr)
Inventor
Yicong LIN
Bin SHAN
Zhirong ZHENG
Tian Lin
Original Assignee
Abb Schweiz Ag
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 Abb Schweiz Ag filed Critical Abb Schweiz Ag
Priority to PCT/CN2019/072355 priority Critical patent/WO2020147114A1/en
Priority to EP19909781.7A priority patent/EP3912238A4/de
Priority to CN201980079643.0A priority patent/CN113169531B/zh
Publication of WO2020147114A1 publication Critical patent/WO2020147114A1/en

Links

Images

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
    • H02G5/00—Installations of bus-bars
    • H02G5/02—Open installations
    • H02G5/025—Supporting structures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
    • H02B1/21—Bus-bar arrangements for rack-mounted devices with withdrawable units

Definitions

  • Embodiments of the present disclosure relate to a supporting mechanism for busbars as well as associated switchgear.
  • Busbars are essential parts of switchgears and control equipment.
  • the busbars are usually supported by a busbar supporting mechanism arranged in the switchgear.
  • the busbar supporting mechanism is a common electrical accessory in the switchgear and control equipment.
  • the main function of the busbar supporting mechanism is to support, insulate the busbars and withstand electrical and thermal forces.
  • the busbars are generally arranged in a single horizontal parallel arrangement.
  • the busbars are arranged such that largest area surfaces thereof are adjacent to each other. Since the largest area surface is an effective heat dissipation surface, the above arrangement makes the heat of the busbars difficult to dissipate.
  • the busbars in the switchgear typically comprises main busbars and branch busbars.
  • the branch busbars need to be connected to the main busbars through connection holes on the main busbars. That is, the connection holes are necessary when coupling the branch busbars to the main busbars.
  • the connection holes should be drilled at different positions on the main busbars of different phases to connect with the branch busbars, so that the standardization degree of the main busbar is reduced, and the assembly efficiency is inevitably affected.
  • busbar supporting mechanisms have the problems of affecting heat dissipation, inconvenient installation, and the risk of overheating.
  • embodiments of the present disclosure provide a supporting mechanism for busbars.
  • a supporting mechanism for busbars comprises a middle part comprising at least two sets of first slot arranged in pairs on two sides of the middle part, each set of first slots passing through the middle part in a direction perpendicular to an extending direction of the middle part; a first side part and a second side part arranged symmetrically and adjacent to the middle part, the first and second side parts each comprising at least a set of second slots aligned with the respective set of first slots to enable the busbars to extend in the direction to be partially received in first slot and second slot; and a fixing assembly coupled to the middle part and the first and second side parts, the fixing assembly operable to move the first and second side parts towards the middle part to clamp the busbars.
  • the supporting mechanism allows the busbars to be symmetrically arranged on two sides of the middle part. That is, the busbars are arranged in two vertical layers with largest area surfaces aligned with each other, improving the heat dissipation of busbars.
  • branch busbars may be attached to main busbars with fixing elements passing through the gaps between the busbars arranged on two sides of the middle part, facilitating the assembly of the branch busbars.
  • no hole in the main busbars for connecting the branch busbars is needed, improving the standardization degree and connection reliability of busbars.
  • each set of first slots comprises a plurality of first slots parallel to each other
  • each set of second slots comprises a plurality of second slots parallel to each other
  • each second slot is aligned with the respective first slot to at least partially receive one of the busbars. In this way, either the number or the sizes of busbars in each set of slots may be adjusted, improving the flexibility of the busbar arrangement.
  • each of the first and second slots is sized to allow largest area surfaces of a first busbar and a second busbar symmetrically arranged on the two sides of the middle part to be aligned. This arrangement ensures that the busbars with the largest area surface aligned with each other may be received in the middle and second slots in a more stable way, improving heat dissipation and current carrying capacity of the busbars.
  • a height of the middle part between first and second slot sets is configured to allow a fixing element to be arranged between the first and second busbars, and wherein the fixing element is operable to electrically couple a branch busbar to the first and second busbars.
  • the fixing element may pass through the gap between the first and second busbars to couple the main busbars to the branch busbars, without drilling holes in the main busbars. In this way, the assembly of the busbars is simpler and more accurate, and the positioning of the busbar is also more convenient.
  • a distance between the adjacent first slots is smaller than a distance between the adjacent sets of first slot in the extending direction.
  • the fixing assembly comprises a first coupling plate adjacent to the first side part; a second coupling plate parallel to the first coupling plate and adjacent to the second side part; and a plurality of adjusting assemblies perpendicular to and between the first and second coupling plates, the adjusting assembly being operable to move the first and second coupling plates to move the pair of side parts towards the middle part. In this way, the assembly of the supporting mechanism may be easier.
  • the first side part comprises a first coupling groove extending in the extending direction and adapted to receive the first coupling plate
  • the second side part comprises a second coupling groove extending in the extending direction and adapted to receive the second coupling plate.
  • the adjusting assembly comprises an adjusting shaft comprising two ends adjacent or coupled to the first and second coupling plates; and a pair of engaging members, each of the pair of engaging members coupled to one of the two ends of the adjusting shaft to move the first and second coupling plates. In this way, a distance between the side parts and middle part and clamping force on the busbars may be adjusted in a more simple way.
  • the middle part comprises at least one through-hole for the adjusting shaft to pass through.
  • a switchgear comprising a supporting mechanism as mentioned above is provided.
  • FIG. 1 shows a perspective view of a supporting mechanism for busbars according to embodiments of the present disclosure
  • FIGs. 2A and 2B show perspective views of supporting mechanisms for busbars according to embodiments of the present disclosure
  • FIG. 3 shows an exploded view of a supporting mechanism for busbars according to embodiments of the present disclosure
  • FIG. 4 shows a perspective view of a middle part of a supporting mechanism for busbars according to embodiments of the present disclosure
  • FIGs. 5 and 6 show perspective views of first and second side parts of a supporting mechanism for busbars according to embodiments of the present disclosure.
  • FIG. 7 shows a perspective view of a supporting mechanism for busbars according to embodiments of the present disclosure, with branch busbars are attached on main busbars.
  • the term “comprises” and its variants are to be read as open terms that mean “comprises, but is not limited to. ”
  • the term “based on” is to be read as “based at least in part on. ”
  • the term “one embodiment” and “an embodiment” are to be read as “at least one embodiment. ”
  • the term “another embodiment” is to be read as “at least one other embodiment. ”
  • the terms “first, ” “second, ” and the like may refer to different or same objects. Other definitions, explicit and implicit, may be comprised below. A definition of a term is consistent throughout the description unless the context clearly indicates otherwise.
  • busbars in the switchgear generate heat due to the current carried by the busbars, resulting in an increase in temperature.
  • Largest area surfaces of a busbar can dissipate the heat generated by the load on the busbar.
  • the busbars are arranged in supporting mechanisms of a switchgear in a single horizontal parallel arrangement. That is, in such an arrangement, the busbars are arranged in a single horizontal layer with the largest area surfaces adjacent to each other, resulting in poor heat dissipation ofbusbars. In this event, the heat dissipation of the busbars between different phases and between the busbars of the same phase will affect each other, reducing current carrying capacity of the busbars.
  • the main busbars need to be opened connection holes to allow branch busbars to be coupled to the main busbars.
  • alignment of these holes of the main busbars in one phase is needed, resulting in lower assembly efficiency.
  • overheating may be caused due to the joint machining error and assembly error between the main and branch busbars.
  • undue assembly stress between the main and branch busbars may cause a sharp rise in the temperature of the busbars. In addition, this also seriously reduces the reliability of the connection between the main and branch busbars.
  • embodiments of the present disclosure provide a supporting mechanism 100 for busbars 200.
  • FIG. 1 shows a perspective view of a supporting mechanism 100 for busbars 200 according to embodiments of the present disclosure.
  • the supporting mechanism 100 generally comprises a fixing assembly 103, a middle part 101 and two side parts, namely, a first side part 1021 and a second side part 1022 symmetrically arranged adjacent to the middle part 101.
  • the middle part 101 comprises at least two sets of first slot 1011 in pairs.
  • the two sets of first slot 1011 are symmetrically arranged on two sides of the middle part 101 adjacent to the first and second side parts 1021, 1022.
  • first slot 1011 there may be eight sets of first slot 1011, a number of which may correspond to twice the number of phases in the switchgear.
  • Each of the first and second side parts 1021, 1022 comprises a corresponding number of sets of second slot 1023, as shown in FIG. 1.
  • first and second side parts 1021, 1022 comprises a corresponding number of sets of second slot 1023, as shown in FIG. 1.
  • Each set of the first and second slots 1011, 1023 respectively passes through the middle part and side parts in a direction D1 perpendicular to an extending direction D2 of the middle part 101. Furthermore, the set of second slots 1023 is aligned with the respective set of first slots 1011, allowing the busbars 200 partially received in sets of the first slot and second slot 1011, 1023.
  • the middle part 101 and the first and second side parts 1021, 1022 are coupled to each other with the fixing assembly 103.
  • the fixing assembly 103 can move the first and second side parts 1021, 1022 respectively towards the middle part 101 to clamp the busbars 200 therebetween.
  • the busbars 200 extending in the direction D1 are symmetrically arranged on both sides of the middle part 101. That is, the busbars 200 are arranged in two rows, one group ofbusbars (referred to as first busbar 201) is arranged in an upper row between the middle part 101 and the first side part 1021, and another (referred to as second busbar 202) is in a lower row between the middle part 101 and the second side part 1022, as shown in FIGs. 2A and 2B.
  • first busbar 201 one group ofbusbars
  • second busbar 202 is arranged in an upper row between the middle part 101 and the first side part 1021
  • second busbar 202 is in a lower row between the middle part 101 and the second side part 1022, as shown in FIGs. 2A and 2B.
  • only one of the busbars may be arranged in one set of the first and second slots 1011, 1023, as shown in FIG. 2B.
  • this can significantly reduce the busbar temperature and increase current carrying capacity of one busbar.
  • the number of busbars in each set of slots may be appropriately increased.
  • busbars may be required when the carried current is greater than a certain threshold
  • the four busbars are arranged in a single horizontal row.
  • two of the four busbars are arranged in the upper row and the other two are arranged in the lower row.
  • a temperature of the busbars arranged in two vertical rows can be significantly reduced due to the increased heat dissipation area, improving the current carrying capacity of the busbars.
  • such a supporting mechanism can also facilitate the assembly of the branch busbars on the main busbars and thus increase the stability of the system, which will be discussed further below.
  • a size of busbar may also be adjustable.
  • the busbars having different sizes such as 60X10, 80X10, 100X8, 125X8 or the like, may be exchanged according to the magnitude of the carried current.
  • the carried current is small
  • small sized busbars may be used.
  • large sized busbars may be used without changing the number of the busbars. In this way, the flexibility of the busbar arrangement is further improved.
  • the sets of first slot and second slot 1011, 1023 may respectively comprise a plurality of slots each for receiving one of the busbars 200, as shown in FIGs. 1, 3-6.
  • the set of first slots 1011 may comprise a plurality of first slots 1013 parallel to each other and the set of second slots 1023 may comprise a plurality of second slots 1026 parallel to each other. This may facilitate the update and maintenance of the supporting mechanism 100. For example, in case the carried current is increased, one or more busbars 200 may be simply added in the first and second slots 1013, 1026 adjacent to the slots in which busbars have already been received.
  • each of the first and second slot sets 1011, 1023 may be used to receive one or more busbars 200 in one phase.
  • a distance between the adjacent first slots 1013 may be smaller than a distance between the adjacent sets of first slot 1011 in the extending direction D2, as shown in FIG. 3.
  • the distances between adjacent second slots 1026 and between adjacent sets of second slot 1012 may have the same arrangement as above.
  • each of the middle and second slots 1013, 1026 may be sized to allow the largest area surfaces of the first and second busbars 201, 202 to be aligned.
  • a width of each of the middle and second slots 1013, 1026 may be substantially equal to a thickness of a busbar 200. This can prevent the busbar 200 received in the middle and second slots 1013, 1026 from shaking, further increasing the stability of the supporting mechanism 200 and reducing the risk of overheating.
  • the fixing assembly 103 for fixing the middle and side parts may comprise two coupling plate, namely, a first coupling plate 1031 adjacent to the first side part 1021 and a second coupling plate 1032 adjacent to the second side part 1022.
  • the first and second coupling plates 1031, 1032 are parallel to each other.
  • the fixing assembly 103 may further comprise a plurality of adjusting assemblies 1033 perpendicular to and between the first and second coupling plates 1031, 1032.
  • the adjusting assemblies 1033 may be used to move the first and second coupling plate 1031, 1032 and thus to move the first and second side parts 1021, 1022 towards the middle part 101.
  • the supporting mechanism 100 can ensure stable assembly of the busbars without requiring high machining accuracy of the supporting mechanism 100. This further reduces the manufacture and assembly costs.
  • the first and side parts 1021, 1022 may respectively comprise a first coupling groove 1024 and a second coupling groove 1025 extending in the extending direction D2, as shown in FIGs. 5 and 6.
  • the first and second grooves 1024, 1025 may respectively receive the first and second coupling plates 1031, 1032, increasing the positioning accuracy of the first and second coupling plates 1031, 1032 in a simple way.
  • the adjusting assembly 1033 may comprise an adjusting shaft 1034 and a pair of engaging members 1035, as shown in FIG. 3. Two ends of the adjusting shaft 1034 may be adjacent or coupled to the first and second coupling plates 1031, 1032, respectively.
  • the two ends of the adjusting shafts 1034 may comprise bolts that pass through the first and second coupling plates 1031, 1032, and the engaging member 1035 may be nuts engaged with the bolts. In this way, the adjusting assembly 1033 can be implemented using standard components, further reducing costs.
  • a first end of the adjusting shaft 1034 may be a bolt and the second end may have an inner screw hole.
  • the engaging member 1035 engaged with the first end may be a nut and the one engaged with the second end may be a bolt. This may increase the assembly flexibility of the supporting mechanism 100 and facilitate the distance adjustment between the side part and middle part 101.
  • Numbers of the adjusting assemblies 1033 may be set according to the length of the supporting mechanism 100 in the extending direction D2. For example, in some embodiments, as shown in FIG. 3, there are five adjusting assemblies 1033, in which two adjusting assemblies 1033 may be arranged on two ends of the supporting mechanism 100 in the extending direction D2 and the other three are arranged between the adjacent sets of slot. In this way, the forces on the side and middle plates may be more evenly balanced, thereby increasing the structural stability of the support mechanism 100.
  • the middle part 101 may comprise at least one through-hole 1012 for the adjusting shaft 1034 to pass through.
  • adjusting assemblies 1033 are merely for illustration, without suggesting any limitations as to the scope of the present disclosure. Any other suitable numbers and arrangements are possible as well.
  • the adjusting assemblies 1033 may be merely arranged on two ends of the supporting mechanism 100 in the extending direction D2.
  • the first and second coupling plates 1031, 1032 may have a U-shaped cross-section in a plane perpendicular to the extending direction D2, as shown in FIG. 3.
  • the U-shaped coupling plate may allow the engaging members 1035 to be hidden in the plate.
  • the U-shaped cross-section may increase the strength of the first and second coupling plates 1031, 1032, thereby further increasing the structural stability of the supporting mechanism 100.
  • any of the first and second coupling plates 1031, 1032 may comprise coupling means to allow the supporting mechanism 100 to be fixed in the switchgear.
  • the coupling means may be integrally formed on the first or second coupling plates 1031, 1032 by bending or the like. In this way, the supporting mechanism 100 may be fixed in the switchgear more conveniently.
  • the above arrangement of the supporting mechanism 100 may also enable the branch busbars 203 to be coupled to the main busbars without opening holes in the main busbars.
  • the branch busbars 203 may be coupled to the main busbars by using fixing elements 104 arranged between the first and second busbars 201, 202.
  • the size limit of the busbars may be further reduced.
  • the busbars may be easier to be standardized.
  • the problem of overheating is also avoided due to the reduced assembly requirements.
  • the branch bus bars in the different phases may be arranged at mutually staggered positions in the direction D1, as shown in FIG. 7. This may further facilitate the heat dissipation in branch busbars 203.
  • a height of the middle part between sets of first and second slot 1011, 1023 is sized to allow a fixing element 104 to pass through the gap between the first and second busbars 201, 202, as shown FIG. 7. This can be achieved without too high machining accuracy, and thus reduces the manufacture and assembly costs.

Landscapes

  • Installation Of Bus-Bars (AREA)
PCT/CN2019/072355 2019-01-18 2019-01-18 Supporting mechanism for busbar and switchgear WO2020147114A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/CN2019/072355 WO2020147114A1 (en) 2019-01-18 2019-01-18 Supporting mechanism for busbar and switchgear
EP19909781.7A EP3912238A4 (de) 2019-01-18 2019-01-18 Tragmechanismus für eine sammelschiene und schaltanlage
CN201980079643.0A CN113169531B (zh) 2019-01-18 2019-01-18 用于母线的支撑机构以及开关设备

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/072355 WO2020147114A1 (en) 2019-01-18 2019-01-18 Supporting mechanism for busbar and switchgear

Publications (1)

Publication Number Publication Date
WO2020147114A1 true WO2020147114A1 (en) 2020-07-23

Family

ID=71613628

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/072355 WO2020147114A1 (en) 2019-01-18 2019-01-18 Supporting mechanism for busbar and switchgear

Country Status (3)

Country Link
EP (1) EP3912238A4 (de)
CN (1) CN113169531B (de)
WO (1) WO2020147114A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113300225A (zh) * 2021-05-24 2021-08-24 湖北省电力装备有限公司 高压提升柜

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2581233A1 (fr) 1985-04-24 1986-10-31 Spie Batignolles Bride isolante pour barres conductrices, notamment pour tableaux de distribution
WO2009090117A1 (de) * 2008-01-14 2009-07-23 Siemens Aktiengesellschaft Sammelschienenanordnung für eine elektrische stromverteilereinheit
CN102334255A (zh) * 2008-12-30 2012-01-25 施耐德电气美国股份有限公司 减小材料需求而不降低性能的开关柜母线组件
CN103907253A (zh) * 2011-11-03 2014-07-02 施耐德电气美国股份有限公司 具有减少的功耗、材料和温度的开关柜汇流条组件

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102290758A (zh) * 2010-06-21 2011-12-21 珠海光乐电力母线槽有限公司 耐火母线槽
CN102290759A (zh) * 2010-06-21 2011-12-21 珠海光乐电力母线槽有限公司 一种密集型的母线槽
CN201927367U (zh) * 2010-12-16 2011-08-10 特莱萨崎电气（上海）有限公司 一种大电流铜排联结结构
CN202488066U (zh) * 2012-03-30 2012-10-10 吉林省金冠电气股份有限公司 大相距低压封闭式母线槽
CN205791364U (zh) * 2016-05-18 2016-12-07 镇江西门子母线有限公司 低压柜主母线夹
CN105914592A (zh) * 2016-06-16 2016-08-31 镇江西门子母线有限公司 一种低压柜新型母线系统

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2581233A1 (fr) 1985-04-24 1986-10-31 Spie Batignolles Bride isolante pour barres conductrices, notamment pour tableaux de distribution
WO2009090117A1 (de) * 2008-01-14 2009-07-23 Siemens Aktiengesellschaft Sammelschienenanordnung für eine elektrische stromverteilereinheit
CN102334255A (zh) * 2008-12-30 2012-01-25 施耐德电气美国股份有限公司 减小材料需求而不降低性能的开关柜母线组件
CN103907253A (zh) * 2011-11-03 2014-07-02 施耐德电气美国股份有限公司 具有减少的功耗、材料和温度的开关柜汇流条组件

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
LAFER IBERICA, CATALOGO DE PRODUCTOS 06.2017
LAFER SRL, SUPPORTI BARRE, 2 November 2018 (2018-11-02), Retrieved from the Internet <URL:https://fdocumenti.com/document/supporti-barre.html>
See also references of EP3912238A4

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113300225A (zh) * 2021-05-24 2021-08-24 湖北省电力装备有限公司 高压提升柜
CN113300225B (zh) * 2021-05-24 2023-11-14 湖北省电力装备有限公司 高压提升柜

Also Published As

Publication number Publication date
CN113169531B (zh) 2024-02-20
EP3912238A1 (de) 2021-11-24
CN113169531A (zh) 2021-07-23
EP3912238A4 (de) 2022-08-24

Similar Documents

Publication Publication Date Title
US6111745A (en) Switchgear conductors and mounting arrangements therefor
US5949641A (en) Mounting arrangement for neutral bus in switchgear assembly
US6040976A (en) Switchgear conductors and mounting arrangements therefor
US7819681B1 (en) Thermally efficient busway joint pack
RU2542340C2 (ru) Электрораспределительное устройство с токопроводящей шиной
CA2833761C (en) Busway joint pack with heat sink insert
US8619411B2 (en) Switchgear bus assembly having reduced power loss, material and temperature
US20060040538A1 (en) Method of servicing a channel bus splice assembly
KR100988056B1 (ko) 규격 부스바 연결 구조
EP3104466B1 (de) Elektrische vorrichtung
US3354357A (en) Electrical panelboard
US2707761A (en) Unitized circuit breaker panel board
WO2020147114A1 (en) Supporting mechanism for busbar and switchgear
US6141206A (en) Switchgear assembly with novel arrangement for connecting a tie or main circuit breaker
US7553175B1 (en) Power distribution system and electrical connector assembly therefor
WO2021187037A1 (ja) コネクタ
US9954345B2 (en) Panelboard, and switchgear assembly and stab assembly therefor
KR100886812B1 (ko) 전원 배전장치
JP4722677B2 (ja) 配電盤
US10170901B2 (en) Stacked bus assembly with stepped profile
CN107196193B (zh) 出线排的安装调节结构及抽屉式断路器的底架
US3095469A (en) Joint means for bus duct
US4329010A (en) Electrical terminal connector
JP2006191739A (ja) 配電盤の母線支持装置
KR19980042874A (ko) 모선 지지장치

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19909781

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2019909781

Country of ref document: EP

Effective date: 20210818