WO2011119018A2 - Barre blindée flexible - Google Patents

Barre blindée flexible Download PDF

Info

Publication number
WO2011119018A2
WO2011119018A2 PCT/MY2011/000024 MY2011000024W WO2011119018A2 WO 2011119018 A2 WO2011119018 A2 WO 2011119018A2 MY 2011000024 W MY2011000024 W MY 2011000024W WO 2011119018 A2 WO2011119018 A2 WO 2011119018A2
Authority
WO
WIPO (PCT)
Prior art keywords
conductor
flexible
insulation
bus duct
contraction
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/MY2011/000024
Other languages
English (en)
Other versions
WO2011119018A3 (fr
Inventor
Chih Bok Lew
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MEGADUCT TECHNOLOGY SDN BHD
Original Assignee
MEGADUCT TECHNOLOGY SDN BHD
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 MEGADUCT TECHNOLOGY SDN BHD filed Critical MEGADUCT TECHNOLOGY SDN BHD
Publication of WO2011119018A2 publication Critical patent/WO2011119018A2/fr
Publication of WO2011119018A3 publication Critical patent/WO2011119018A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • H02G5/00—Installations of bus-bars
    • H02G5/002—Joints between bus-bars for compensating thermal expansion

Definitions

  • the present invention relates generally to electricity supply devices and more particularly to a flexible bus duct.
  • US Patent 2,105,833 - Feuer, et al shows a track which comprises a flexible moulding having two slits with a wire embedded in each slit. Again only a "point contact" with a tine of a power take off device would occur. Further the moulding does not appear to be able to bend laterally to the slits.
  • US Patent 2, 175,245 - Brockman whilst showing a flexible track, requires that the contacts are in the form of separate jaws, and also only shows a shape of housing which does not permit bending of the track laterally, but only allows bending with the ingress to the contacts being internal or external to the bend direction. In US Patent 2,240,180 - Frank this describes a flexible track. But does not show a track which can bend laterally. Further the contacts have individual jaws to assist bending with the ingress to the contacts being internal or external to the bend direction.
  • Another patent application discloses an elongate flexible conductor assembly located in a longitudinally extending slot in a housing for use in an electrical bus distributor.
  • the conductor comprises a coiled hollow conductor located in slots provided in the elongate flexible insulated housing.
  • pins on the plug were adapted with connector sockets formed by a bifurcated member which upon engagement with the continuous conducting element spread apart and engaged the conductor on either side.
  • it is predictable that the electrical contact between the connector sockets and the conductor will sometimes be compromised as the sockets after continued use begin to loose their elastic memory upon which reliance was placed to effect proper electrical connection.
  • What is desired in the art is a flexible bus duct which is flexible in the longitudinal (expansion) and lateral (deflection) directions, allowing a much more versatile connection angle between rigid bus ducts.
  • the present invention seeks to ameliorate the aforementioned disadvantages by providing a flexible conductive strip capable of deflection, extension and contraction in three dimensions thus allowing ease of on-site installation.
  • This invention relates to a flexible conductor that can deflect and fold with ease and yet transmit electricity like a regular copper bar.
  • This invention further relates to a flexible bus duct allowing longitudinal expansion and contraction as well as lateral deflection comprising: a length of flexible conductor having two ends and comprising a plurality of conductive strands bound together and providing substantially constant electrical conduction during expansion, contraction or other movement of the bus duct; flexible insulation enclosing the said conductor and providing electrical insulation to the said conductor and able to expand, contract, and otherwise move proportionally with said conductor; a pair of feeder flanges, each said feeder flange connecting each end of the conductor and insulation, to adjacent bus ducts or other electrical transmission devices; and a scissor assembly comprising a series of plates forming a scissor like mechanism providing support to the conductor and insulation during expansion and contraction; a pulley comprising a roller shaft around which the - conductor and insulation is bent so as to allow lateral deflection of the conductor and insulation.
  • a rubberized housing within which the internal assembly of the conductor, insulation, pair of feeder flanges, scissor assembly, and pulley is housed, and said rubberized housing is able to expand and contract proportionally to said internal assembly.
  • the flexible conductor is prefabricated into a zigzag configuration to allow for longitudinal expansion and contraction thereof.
  • the flexible bus duct must comply with the international standard bodies like International Electrotechnical Commission (IEC), NEMA, Underwriters Laboratory (UL) and British Standard (BS). For instance in this case it complies with IEC 60439-2 latest edition.
  • IEC International Electrotechnical Commission
  • NEMA Underwriters Laboratory
  • BS British Standard
  • a dampening system with shock absorbers can be added to the system for resisting heavy movement such as those experienced during earthquakes. This will allow the bus duct to transmit electricity as per normal even in an event of an earthquake.
  • Figure 1 shows an overall view of an embodiment of this invention.
  • Figure 2 shows a plan view of a flexible bus duct in an embodiment of this invention.
  • Figure 3 shows a plan view of a scissor assembly in an embodiment of this invention.
  • Figure 4 shows a plan view of a scissor assembly in a contracted state in an embodiment of this invention.
  • Figure 5 shows a plan view of a scissor assembly in an extended state in an embodiment of this invention.
  • Figure 6 shows a view of a clamp sub assembly in an embodiment of this invention.
  • Figure 7 shows a plan view of a flexible bus duct in a contracted state in an embodiment of this invention.
  • Figure 8 shows a side view of a flexible bus duct in an embodiment of this invention.
  • Figure 9 shows a side view of a vertical pulley in an embodiment of this invention.
  • Figure 10 shows a side view of a vertical pulley in a mid position in an embodiment of this invention.
  • Figure 1 1 shows a side view of a vertical pulley in a low position in an embodiment of this invention.
  • Figure 12 shows a side view of a horizontal pulley in an embodiment of this invention.
  • Figure 13 shows a side view of a horizontal pulley in a center position in an embodiment of this invention.
  • Figure 14 shows a side view of a horizontal pulley in an extended state in an embodiment of this invention.
  • Figure 15 shows a side view of a horizontal pulley in a state of positive deflection in an embodiment of this invention.
  • Figure 16 shows a side view of a horizontal pulley in a state of negative deflection in an embodiment of this invention.
  • Figure 17a shows a front view of a flexible bus duct in a second embodiment of this invention.
  • Figure 17b shows a side view of a flexible bus duct in a second embodiment of this invention.
  • Figure 18a shows a perspective view of a ball joint in an embodiment of this invention.
  • Figure 18b shows a perspective view of a ball joint in an embodiment of this invention.
  • Figure 18c shows a perspective view of a ball joint in an embodiment of this invention.
  • Figure 18d shows a perspective view of a ball joint in an embodiment of this invention.
  • a flexible bus duct (1) joining adjacent rigid bus ducts (80) in a typical electrical transmission line, such as from a transformer to a switchboard layout.
  • the flexible bus duct (1) is designed to extend and contract in a longitudinal direction, as well as deflect in both a vertical and horizontal lateral direction. In other words, the flexible bus duct (1) is capable of adjustments along 3 axes or dimensions.
  • FIG. 2 A more detailed view of the bus duct is shown in Figures 2, where there can be seen a flexible bus duct (1) allowing longitudinal expansion and contraction as well as lateral deflection comprising a flexible conductor (10) comprising a plurality of conductive strands bound together and providing substantially constant electrical conduction during expansion, contraction or other movement of the bus duct; flexible insulation (20) enclosing the said conductor and providing electrical insulation to the said conductor (10) and able to expand, contract, and otherwise move proportionally with said conductor (10); a pair of feeder flanges (30, 35), each said feeder flange connecting each end of the conductor (10) to adjacent bus ducts (80) or other electrical transmission devices; a scissor assembly (40) comprising a series of scissor plates (42) forming a scissor like mechanism providing support to the conductor and insulation during expansion and contraction; and a pulley (not shown) comprising a roller shaft around which the conductor and insulation is bent so as to allow lateral deflection of
  • the flexible conductor (10) can be made of copper or aluminum in preferred embodiments. It can be made in rectangular, cylindrical or tube cross section and then formed into a zig zag or wave like configuration.
  • This flexible conductor (10) comprises many fine strands bound together, which is mechanically and electrically different from a cable.
  • This flexible conductor (10) has a current capacity of between 200 to 10,000 amperes. The objective of this conductor is to conduct electricity efficiently without any deterioration during movements of expansion, contraction and lateral deflection.
  • the flexible insulation (20) is made from a material that provides good electrical insulation while having good mechanical properties where it can withstand heat and open flame, and is flexible to expand and contract proportionally to the flexible conductor (10). The insulation is mainly to insulate the conductor phases to avoid a short circuit.
  • the feeder flanges (30, 35) are made of copper or aluminum conductors acting as an interface to connect onto adjacent rigid bus ducts (80) made up of rigid rectangular conductors.
  • One feeder flange (30, 35) is attached to each end of the flexible conductor (10) to allow connection onto the rest of the bus duct routing (see figure 1).
  • a pleated rubberized or silicon housing (70) Covering the internal assembly of the bus duct is a pleated rubberized or silicon housing (70) the function of which is to avoid ingress of water and dust.
  • the pleated design allows it to expand and contract proportionally to the internal assembly.
  • This rubber housing (70) is made of special rubber to withstand heat, UV resistance while maintaining the flexibility.
  • the flexible conductor (10) is wrapped by a layer of insulation (20) and prefabricated into a zigzag arrangement to allow its structure to expand and contract.
  • This flexible conductor (10) will be responsible to transmit electricity while the scissor assembly (40) guides its movement along the longitudinal direction.
  • a scissor assembly (40) guides and supports the flexible conductor (10) in position during movements of the bus duct.
  • the ends of the scissor plate (42) are bolted onto a U clamp sub assembly (44) which then slides along the slots (45) available on the pivot plate (46) and sliding plate (48).
  • This scissor assembly (40) is then connected in series to form a mechanism that allows for extension and contraction of the flexible conductor (10) in an orderly manner to which the flexible conductors (10) can be bolted.
  • Estimated extension and contraction in total is between 100mm to 2000mm.
  • the slots (45) are made as a junction for the U sub assembly (44) and the scissor plate (42) to be bolted on perpendicularly to allow proper sliding during extension and contraction.
  • FIG. 6 shows how the U clamp sub assembly (44) is clamped onto the flexible conductor (10).
  • the function of the U sub assembly (44) is to clamp onto the flexible conductor (10) firmly while the ends are bolted to the pivot plate (46) and scissor plate (42) along the scissor assembly (40).
  • the U sub assembly (44) consists of 2 insulated rods (47) clamping onto the flexible conductor (10) by U brackets and tightened by bolts installed side ways. Both ends have the same arrangement and the insulated rods (47) are then bolted on the slots on the sliding plates (48) for free sliding.
  • FIG 7 shows the flexible bus duct (1) in a contracted state. As the entire bus duct contracts, the scissor assembly (40), flexible conductor (10) and rubberized housing (70) all contract linearly. The rubberized housing (70) is mounted onto the frames of feeder flanges (30, 35) by steel belts. Referring now to Figures 8 through 1 1, the vertical deflection of the bus duct (1) is illustrated along with the following description. As the flexible conductor (10) connects to the feeder flanges (30, 35), the conductor (10) is formed into an edgewise manner.
  • the insulator rods (47) will clamp the conductor (10) down and hold it in an edgewise manner to be aligned with a pulley system (50).
  • a connector piece (37) which bolts onto the feeder flange rectangular solid conductor (30, 35).
  • the flexible bus duct (1) is able to deflect in a vertical direction within a range of 100mm to 1000mm.
  • the flexible conductor (10) wrapped in insulation (20) will be shape in a U bend rolling over a roller shaft (52).
  • Each end of the U bend (54, 56) will be connected to the scissor assembly (40) and feeder flange (30, 35).
  • the roller shaft will slide upwards together with the feeder flange (35) and hence one side of the U bend will be elongated and the other side becomes shorter.
  • the feeder flange (35) slides downwards, the U bend attached to the feeder flange (35) side will get elongated and the other side will be shorter.
  • Figures 12 through 14 show an alternate embodiment where a similar pulley system used for the lateral deflection is employed for the longitudinal extension and contraction with the pulley system rotated at 90°.
  • Figures 15 through 16 show yet another alternate embodiment where a modified pulley system is used for both the lateral deflection and the longitudinal extension and contraction.
  • FIG. 17a and 17b there is seen a flexible bus duct in a second embodiment of this invention.
  • the flange end busduct (310) is a common part that would be use to connect the adjacent feeder or plug in busducts. It is made by rigid copper or aluminum conductor and ranging from 200 amperes to 10,000 amperes. On the conductor end it will be spread out to connect to the flexible conductor.
  • a pair of mounting block (320) connects the steel bracket (330) to flexible housing (70).
  • the mounting block (320) is use to house the external flexible rubber housing (70).
  • the said flexible rubber housing (70) is flexible and flame retardant serves the purpose of contraction, expansion and deflection.
  • a steel bracket (330) is attached with the mounting block (320) and a ball joint swing arm (90).
  • the steel brackets (330) allow ball joint swing arm (90) to move freely on the Y-axis.
  • the steel brackets (330) at both ends of the busduct is attached to the mounting block (320). These brackets (330) are the main mechanism connecting the flexible housing (70) to the flange end busduct (310).
  • the ball joint swing arm (90) is attached with the steel bracket (330), and is able to swing 180° on Y-axis.
  • the ball joint end (92) provides a swing of 30° in the Y and Z-axis.
  • the swing arm (90) will be responsible for contraction and extension.
  • Connecting bars (94) connects the ball joint swing arm (90) and the twin headed ball joint arm (96).
  • the connecting bars (94) and twin headed ball joint arm (96) that connects to other swing arm provides a complete swing mechanism that allows movement 3 dimensionally.
  • Figures 18a through 18d show the said ball joint (92) with the ball stud able to deflect in 3 possible movements at maximum 30° on X, Y and Z-axis to allow for the 3 dimensional movement of the busduct.
  • a ball stud (921) sits within a ball seat (922) and said ball stud (921) is able to move in 3 distinct directions.
  • the ball seat (922) is connected to a bracket (923).

Landscapes

  • Installation Of Bus-Bars (AREA)

Abstract

La présente invention a trait à une barre blindée flexible autorisant une expansion et une contraction longitudinales ainsi qu'une déviation latérale, laquelle barre blindée flexible comprend : un conducteur flexible (10) qui comprend une pluralité de brins élémentaires conducteurs liés les uns aux autres et qui fournit une conduction électrique sensiblement constante au cours de l'expansion, de la contraction ou de tout autre mouvement de la barre blindée; une isolation souple (20) qui enveloppe le conducteur (10), qui fournit une isolation électrique au conducteur (10) et qui est en mesure de s'étendre, de se contracter et de se déplacer autrement de façon proportionnelle audit conducteur (10); une paire de brides de ligne d'alimentation (30, 35), chacune de ces brides de ligne d'alimentation (30, 35) connectant chaque extrémité du conducteur (10) aux barres blindées adjacentes ou à d'autres dispositifs de transmission électrique; un ensemble ciseaux (40) qui comprend un jeu de plaques (42) formant un mécanisme de type ciseaux fournissant un support au conducteur (10) et à l'isolation (20) au cours de l'expansion et de la contraction; et une poulie (50) qui comprend un arbre porte-galet (52) autour duquel le conducteur (10) et l'isolation (20) sont pliés de manière à permettre une déviation latérale du conducteur (10) et de l'isolation (20).
PCT/MY2011/000024 2010-03-23 2011-03-21 Barre blindée flexible Ceased WO2011119018A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
MYPI2010001281 2010-03-23
MYPI2010001281 2010-03-23

Publications (2)

Publication Number Publication Date
WO2011119018A2 true WO2011119018A2 (fr) 2011-09-29
WO2011119018A3 WO2011119018A3 (fr) 2011-11-17

Family

ID=44673780

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/MY2011/000024 Ceased WO2011119018A2 (fr) 2010-03-23 2011-03-21 Barre blindée flexible

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WO (1) WO2011119018A2 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015120697A1 (fr) * 2014-02-14 2015-08-20 华为技术有限公司 Appareillage de connexion de distribution d'énergie
US9306351B2 (en) 2014-02-14 2016-04-05 Huawei Technologies Co., Ltd. Power distribution connection apparatus
CN107033318A (zh) * 2017-04-25 2017-08-11 山东泰开电缆有限公司 基于一体化的变压器台用的预制母线、制备原料和方法及应用
CN109378606A (zh) * 2018-11-29 2019-02-22 国网安徽省电力有限公司滁州供电公司 一种引流线夹
US10224702B1 (en) 2017-11-30 2019-03-05 General Electric Company System for a flexible bus duct and bus bar
CN109728671A (zh) * 2019-01-17 2019-05-07 宁波城市职业技术学院 一种可滑动电机
WO2021078354A1 (fr) * 2019-10-21 2021-04-29 Abb Power Grids Switzerland Ag Conducteur électrique télescopique et agencement haute tension
WO2021078355A1 (fr) * 2019-10-21 2021-04-29 Abb Schweiz Ag Conducteur électrique et agencement haute tension

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2879319A (en) * 1956-07-23 1959-03-24 Electric Distrib Products Inc Bus duct system
US2973405A (en) * 1958-02-21 1961-02-28 Helmuth W Zuch Electrical distribution bus ducts

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015120697A1 (fr) * 2014-02-14 2015-08-20 华为技术有限公司 Appareillage de connexion de distribution d'énergie
US9306351B2 (en) 2014-02-14 2016-04-05 Huawei Technologies Co., Ltd. Power distribution connection apparatus
CN107033318A (zh) * 2017-04-25 2017-08-11 山东泰开电缆有限公司 基于一体化的变压器台用的预制母线、制备原料和方法及应用
US10224702B1 (en) 2017-11-30 2019-03-05 General Electric Company System for a flexible bus duct and bus bar
CN109378606A (zh) * 2018-11-29 2019-02-22 国网安徽省电力有限公司滁州供电公司 一种引流线夹
CN109378606B (zh) * 2018-11-29 2023-10-31 国网安徽省电力有限公司滁州供电公司 一种引流线夹
CN109728671A (zh) * 2019-01-17 2019-05-07 宁波城市职业技术学院 一种可滑动电机
CN109728671B (zh) * 2019-01-17 2024-02-20 宁波城市职业技术学院 一种可滑动电机
WO2021078354A1 (fr) * 2019-10-21 2021-04-29 Abb Power Grids Switzerland Ag Conducteur électrique télescopique et agencement haute tension
WO2021078355A1 (fr) * 2019-10-21 2021-04-29 Abb Schweiz Ag Conducteur électrique et agencement haute tension
US11664610B2 (en) 2019-10-21 2023-05-30 Hitachi Energy Switzerland Ag Telescopic electric conductor and high voltage arrangement

Also Published As

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