EP2553704A1 - Dispositif de fermeture et disjoncteur doté de ce dispositif de fermeture - Google Patents

Dispositif de fermeture et disjoncteur doté de ce dispositif de fermeture

Info

Publication number
EP2553704A1
EP2553704A1 EP11761992A EP11761992A EP2553704A1 EP 2553704 A1 EP2553704 A1 EP 2553704A1 EP 11761992 A EP11761992 A EP 11761992A EP 11761992 A EP11761992 A EP 11761992A EP 2553704 A1 EP2553704 A1 EP 2553704A1
Authority
EP
European Patent Office
Prior art keywords
volume
closing
variable component
closing device
closing drive
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.)
Withdrawn
Application number
EP11761992A
Other languages
German (de)
English (en)
Other versions
EP2553704A4 (fr
Inventor
Nong Wang
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.)
ABB LV Installation Materials Co Ltd
Original Assignee
ABB LV Installation Materials Co Ltd
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 LV Installation Materials Co Ltd filed Critical ABB LV Installation Materials Co Ltd
Publication of EP2553704A1 publication Critical patent/EP2553704A1/fr
Publication of EP2553704A4 publication Critical patent/EP2553704A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/66—Power reset mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/66—Power reset mechanisms
    • H01H2071/665—Power reset mechanisms the reset mechanism operating directly on the normal manual operator, e.g. electromagnet pushes manual release lever back into "ON" position
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H61/00—Electrothermal relays

Definitions

  • the invention relates to an automatic closing device and a circuit breaker, and more particularly to a new automatic closing device and a Miniature Circuit Breaker (MCB) with the closing device.
  • MBC Miniature Circuit Breaker
  • MCB is used to switch on/off the circuit connection in the normal or abnormal condition respectively.
  • MCBs are widely utilized in distribution system of various buildings.
  • MCBs switch off the connection between the terminal devices and the power in the case of abnormity, and reconvey the current into the terminal devices by closing operation until the operation condition is normal.
  • various circuit breakers such as MCB, RCB (Residual Current Circuit Breaker) etc., reconnect the broken circuit by manual closing operation during the daily utilization.
  • automation system are used more and more commonly in constructions, and the circuit breakers need to be equipped with automatic closing devices which become a part of the automation system and greatly improve the operation efficiency.
  • the closing operation is an energy storage process for the MCB and RCB, e.g. the operation of a four-linked-pole action mechanism
  • a great moment is required during the closing operation.
  • the automatic closing device in the circuit breaker is driven by the electromotor.
  • the great moment acquired by the gear down implements the closing operation of the MCB or RCB.
  • shortcomings of an automatic closing device comprising electromotor gears and the controlling system attribute to the complex structure, huge volume and high cost.
  • An object of the present invention is to overcome above mentioned shortcomings of prior arts, and provide a new closing device and a circuit breaker with the closing device.
  • Such new closing device takes advantages of simple configuration, convenient operation and low cost.
  • a closing device comprises: a chamber of the closing device, a closing drive mechanism, a volume-variable component, a driver, and a closing handle; in which the closing drive mechanism and volume-closing component are set in the chamber, and the driver is configured in the volume-variable component; the volume-variable component is configured to increase or decrease the volume under the control of the driver; and the closing drive mechanism is configured to transmit the force generated by the increasing volume of the volume-variable component to the closing handle.
  • the chamber of the closing device is a rigid body; the volume-variable component is outside coated by a flexible film; the driver is made from an electrical heating element; and heated by the electrical heating element, said volume of the volume-variable component increases gradually.
  • the volume-variable component imposes action on the closing drive mechanism by a connective plunger; the driver is made from an electrical heating element; and heated by the electrical heating element, said volume of the volume-variable component increases in the direction of the plunger.
  • the closing drive mechanism comprises a closing drive channel and a plurality of beads; the closing drive channel is connected to the chamber of the closing device, and the plurality of beads moves from the chamber of the closing device to the closing drive channel during the volume-variable component' volume increasing; and the closing handle is set at the terminal of the closing drive channel apart from the volume-variable component, and said plurality of beads move to the closing handle along the closing drive channel during the volume-variable component's volume further increasing.
  • variable-volume component is made of the paraffin or the memory alloy spring with an extension feature when heated; and the bead is made of steel, iron, ceramic, plastic, glass or resin.
  • a MCB is provided, in which comprises the closing device mentioned above.
  • Fig.1 illustrates a cross-section of MCB according to a preferred embodiment of the present invention.
  • Fig.2 illustrates an automatic closing device according to another preferred embodiment of the present invention.
  • Fig.1 illustrates a MCB 1 according to a preferred embodiment of the present invention.
  • a common manual closing MCB 1 is provided shown in Fig.1 , which comprises a closing handle 2, a closing drive channel 3, a plug 4, a column reset extension spring 5, a high heatproof spring film 6, a volume-variable component 7, wirings 8, a heating element 9, a chamber support 10 and a closing drive component 11 .
  • the chamber support 10 of the automatic closing device used in CBs is a rigid body, and coated by the high heatproof spring film 6, the heating element 9 and the volume-variable component 7 is set at one side of the chamber support 10.
  • the closing drive component 11 is configured at the other side of the chamber support 10.
  • the heating element 9 coated by the spring film 6 is connected with the automation system (not shown in Figures) of constructions.
  • the operation principle of such automatic closing device is described as follows.
  • the automation system installed in the constructions will detect present electrical condition; send corresponding indications to the circuit breaker when the electrical condition meets the requirement on the safe operation of the terminal device, and input current to the heating element 7 via the wirings 8. Then the powered heating element starts to generate heat so that the temperature of the volume-variable component 7 coated in the high heatproof spring film rises gradually and its volume expands.
  • Such heating element may be configured in the spring film or outside of the film. As long as matching the volume-variable component and assuring good heat-conduction, any one of the configuration means can be utilized in the present embodiment.
  • the volume-variable component 7 is in solid state at normal temperature, but becomes liquid as the temperature rises.
  • the total volume of such component 7 increases proportionally during the melting period. Consequently, the space occupied by the spring film in the chamber support increases gradually with the increasing volume of the volume-variable component coated by the spring film 6.
  • the volume-variable component may be made of the paraffin.
  • the closing drive component 11 lies in the other side of the chamber support, contrary to the region of the spring film, and drives the circuit breaker to perform the closing operation.
  • the closing drive component 11 comprises a driving channel and a plurality of beads.
  • the beads originally staying in the chamber support are gradually pushed into the driving channel 3, and move along the driving channel 3 which matches the closed track of the circuit breaker's handle.
  • there is a reset spring 5 In the faraway end of the driving channel, there is a reset spring 5, and the beads' movement to the closing handle need to overcome the elastic force of the reset spring.
  • the closing handle 2 lies at the end of the driving channel. While the beads move to the location of the closing handle with the increase of the volume-variable component's volume, the beads drive the closing handle of the circuit breaker so as to perform closing operation on the circuit breaker 1 .
  • the construction's automation system switches off the current to the heating element 9, and the volume-variable component 7 becomes solid with the gradual cooling.
  • the volume occupied by the spring film decreases gradually, and under the action of the column reset spring 5, the solid matter congregates together in the side of the chamber support far away the driving channel.
  • the beads in the driving channel also gradually return to the chamber support space under the action of the spring. In this way, the automatic closing device goes back to the initial state before the operation until the automation system supplies power to the heating element again to perform a new closing operation.
  • the paraffin exhibits a large volume expansion coefficient in the vicinity of its melting temperature.
  • the pressure is 200MPa, its maximum volume expansion coefficient rate can reach 15%.
  • the expansible compound is not limited to a solid, and the liquid with a larger thermal expansion coefficient can be utilized in the automatic closing device provided in the present invention.
  • the small beads, transferring the force generated by the volume expansion of the paraffin to the closing handle can be made of steel, iron, ceramics, plastic, glass or resin and so on, as long as their intensity matching the power transmission requirement.
  • a memory alloy spring is provided as the volume expansion component or the length-variable component, which is comprised in the closing device shown in Fig.2.
  • the differences comprise: the extensible elastic component 7' and the plunger 6' manufactured by memory alloy materials, shown in Fig.2, replace respectively the volume-variable component 7 made of the paraffin and the spring film 6 shown in Fig.1 .
  • the memory alloy elastic component 7' Under the thermal action of the heating element, the memory alloy elastic component 7' will be expanded gradually a certain length and drive the connected plunger during the extension of the spring component. The plunger moves in the space of the support, and pushes the small beads into the closing handle's driving channel 3. In accordance with the first embodiment in a similar way, the little beads result in closing operation on the closing handle.
  • the memory alloy elastic component When switch off the power to the heating element, the memory alloy elastic component will cool and shrink to its initial length gradually. At the same time, upon the force of reset spring 5, the small beads in the driving channel are pushed back to the support space.
  • the driving equipment for expanding and contracting such alloy components can not only be the heating element, but also electromagnetic equipments or other drivers generating a specific signal.
  • PTC components can be used as the heating element 9. While other heating equipments converting the current to thermal energy can also be used in the automatic closing device proposed in the present invention.
  • the automatic closing device provided in the present invention uses the extension produced in the phase change of materials or the length change produced by the memory alloys, and the small beads convert the volume or length change into a thrust along a specific direction so as to automatically perform the closing operation on the circuit breaker.
  • the automatic closing device takes advantages of small size, relatively low cost and very high reliability.

Landscapes

  • Breakers (AREA)
  • Thermally Actuated Switches (AREA)

Abstract

L'invention a trait à un dispositif de fermeture et à un disjoncteur doté de ce dispositif de fermeture. Ledit dispositif de fermeture comprend une chambre, un mécanisme d'actionnement de la fermeture (11), un composant à variation de volume (7), un actionneur (9) et une manette de fermeture (2). Ledit mécanisme d'actionnement de la fermeture (11) et ledit composant à variation de volume (7) sont installés dans la chambre, et l'actionneur (9) se trouve dans le composant à variation de volume (7). Le composant à variation de volume (7) est destiné à augmenter ou diminuer le volume sous le contrôle de l'actionneur (9). Le mécanisme d'entraînement de la fermeture (11) est conçu pour transférer à la manette de fermeture (2) la force produite par le volume accru du composant à variation de volume (7). Ce dispositif de fermeture a l'avantage de présenter une configuration simple, un fonctionnement pratique et un coût peu élevé.
EP11761992.4A 2010-03-30 2011-03-29 Dispositif de fermeture et disjoncteur doté de ce dispositif de fermeture Withdrawn EP2553704A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201020146582 2010-03-30
PCT/CN2011/072244 WO2011120418A1 (fr) 2010-03-30 2011-03-29 Dispositif de fermeture et disjoncteur doté de ce dispositif de fermeture

Publications (2)

Publication Number Publication Date
EP2553704A1 true EP2553704A1 (fr) 2013-02-06
EP2553704A4 EP2553704A4 (fr) 2014-05-21

Family

ID=44711363

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11761992.4A Withdrawn EP2553704A4 (fr) 2010-03-30 2011-03-29 Dispositif de fermeture et disjoncteur doté de ce dispositif de fermeture

Country Status (3)

Country Link
EP (1) EP2553704A4 (fr)
CN (1) CN102884602B (fr)
WO (1) WO2011120418A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104681368B (zh) * 2015-03-17 2017-03-01 上海电科电器科技有限公司 断路器及其自动合闸装置
CN108717921A (zh) * 2018-07-26 2018-10-30 厦门大恒科技有限公司 一种齿条驱动式记忆合金重合闸
CN108666182A (zh) * 2018-07-26 2018-10-16 厦门大恒科技有限公司 一种摆动式记忆合金重合闸
CN108573837B (zh) * 2018-07-26 2024-03-19 厦门大恒科技有限公司 一种绕线式记忆合金重合闸
CN111816519A (zh) * 2020-06-23 2020-10-23 株洲国创轨道科技有限公司 一种伸缩装置及断路器系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0387162A1 (fr) * 1989-03-07 1990-09-12 Gilbert Gamet Dispositif de réenclenchement automatique de disjoncteurs et disjoncteurs équipés d'un tel dispositif
US20080099318A1 (en) * 2006-10-30 2008-05-01 Blake Randy W Circuit breaker operator
EP2535909A1 (fr) * 2010-02-11 2012-12-19 Feng, Shuo Mécanisme d'actionnement de fermeture/d'ouverture de disjoncteur et dispositif d'entraînement associé

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3263411A (en) * 1965-08-02 1966-08-02 Honeywell Inc Control apparatus
US5786742A (en) * 1997-07-14 1998-07-28 Yin; Tien-Ning Push button switch with override interruption structure
CN2386529Y (zh) * 1999-07-21 2000-07-05 游聪谋 具有过载保护功能的按键式开关
JP3985820B2 (ja) * 2004-11-25 2007-10-03 松下電工株式会社 感温型回路遮断膜装置とこれを用いた通電回路装置
WO2006119161A1 (fr) * 2005-05-02 2006-11-09 Carling Technologies, Inc. Commande de disjoncteur actionne a distance montable
CN2851610Y (zh) * 2005-09-07 2006-12-27 李忠林 一种通用汽油机风门的自动开关装置
CN201655569U (zh) * 2010-02-11 2010-11-24 冯运福 一种自动断路器合分闸执行器

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0387162A1 (fr) * 1989-03-07 1990-09-12 Gilbert Gamet Dispositif de réenclenchement automatique de disjoncteurs et disjoncteurs équipés d'un tel dispositif
US20080099318A1 (en) * 2006-10-30 2008-05-01 Blake Randy W Circuit breaker operator
EP2535909A1 (fr) * 2010-02-11 2012-12-19 Feng, Shuo Mécanisme d'actionnement de fermeture/d'ouverture de disjoncteur et dispositif d'entraînement associé

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2011120418A1 *

Also Published As

Publication number Publication date
WO2011120418A1 (fr) 2011-10-06
CN102884602A (zh) 2013-01-16
CN102884602B (zh) 2015-09-02
EP2553704A4 (fr) 2014-05-21

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