EP1925006A2 - Mechanismus zum steuern einer stromverteilungszelle und tumbler dafür - Google Patents

Mechanismus zum steuern einer stromverteilungszelle und tumbler dafür

Info

Publication number
EP1925006A2
EP1925006A2 EP06793415A EP06793415A EP1925006A2 EP 1925006 A2 EP1925006 A2 EP 1925006A2 EP 06793415 A EP06793415 A EP 06793415A EP 06793415 A EP06793415 A EP 06793415A EP 1925006 A2 EP1925006 A2 EP 1925006A2
Authority
EP
European Patent Office
Prior art keywords
tumbler
switch
closed position
open position
thermoplastic material
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.)
Granted
Application number
EP06793415A
Other languages
English (en)
French (fr)
Other versions
EP1925006B1 (de
Inventor
Alain Quemin
Daniel Piccoz
Myriam Bastard
Mathieu Nesme
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.)
Grid Solutions SAS
Original Assignee
Areva T&D SAS
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 Areva T&D SAS filed Critical Areva T&D SAS
Publication of EP1925006A2 publication Critical patent/EP1925006A2/de
Application granted granted Critical
Publication of EP1925006B1 publication Critical patent/EP1925006B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
    • H01H23/02—Details
    • H01H23/12—Movable parts; Contacts mounted thereon
    • H01H23/14—Tumblers
    • H01H23/146—Tumblers having a generally tubular or conical elongated shape, e.g. dolly

Definitions

  • the invention relates to a control mechanism of a current distribution cell comprising a first rotary tumbler mounted on an axis between an open position in which a first switch is open and a closed position in which the first switch is in position. closed position; a second tumbler rotatably mounted on an axis between an open position in which a second switch is open and a closed position in which the second switch is in the closed position. It also relates to a tumbler for this mechanism comprising a central portion and two parallel flanges connected to the central portion, each of the flanges comprising a receiving zone for receiving a colon.
  • the current distribution cells for example the medium voltage cells, comprise two members: a first switch which establishes or cuts the passage of the current in the cell and a second switch which makes it possible to connect the cables of the cell to the potential OV.
  • the second switch is a protection of the operator, for example to carry out maintenance.
  • the members are controlled by a spring-loaded control mechanism that is maneuvered using a removable lever.
  • This type of mechanism is mainly used for medium voltage switchgear. However, it also applies to high voltage transmission and distribution activities.
  • the energy of the spring to be dissipated is preferably between 10J and 100J.
  • tumblers there are various embodiments of tumblers in currently known control mechanisms. Tumblers are known made of mechanically welded steel parts. Tumblers made of steel or cast aluminum are also known. However, these mechanisms have disadvantages. Indeed, the axes used in these tumblers are metallic. It is therefore necessary to mount them on bearings which constitutes additional parts and increases the cost. In addition, these bearings must be greased which requires maintenance operations. Finally, the fats used tend to gel (or freeze or coagulate), resulting in a risk of seizure. Since we do not know the behavior long term of these greases and that the preventive maintenance is not always done by the user, we must have a higher energy to allow a functioning even in the absence of fat or if this one deteriorated to overcome higher friction forces.
  • the tumblers of the prior art also have a number of other disadvantages. They require anti-corrosion protection. They also have the risk of damage and abrupt failure in fatigue.
  • the parts especially when made of steel, are heavy and therefore demanding energy for their movement. They deform, take the game over the maneuvers or break in fatigue. They are of a complex realization because of the problems related in particular to their resistance to corrosion which requires specific treatments, these parts are therefore expensive.
  • the subject of the invention is a control mechanism of a current distribution cell and a tumbler for the mechanism of this cell which overcomes these disadvantages. It proposes a safe mechanism throughout the life of the mechanism.
  • thermoplastic parts provide the following additional advantages:
  • thermoplastic material is chosen from the family of polyoxymethylenes (POMs).
  • the thermoplastic material has a Young's modulus of between 1000 and 12000 MPa and a tensile strength of between 20 and 250 MPa.
  • the material is chosen from the group comprising Delrin POM 100 and POM Delrin 100 ST, the characteristics of which are defined below.
  • FIG. 1 is a perspective view of the power portion of a control mechanism for a current distribution cell, the switch being in the open position;
  • FIG. 2 is a detailed perspective view of the first switch tumbler of FIG. Figure 1 is a detail view in perspective of the second switch tumbler of Figure 1;
  • Figure 4 is a perspective view similar to Figure 1 but in which the spring is in the intermediate position substantially close to the dead point;
  • Figure 5 shows the mechanism of Figures 1 and 4 the first switch being in the closed position
  • Figure 6 is a front view of the switch mechanism in the open position, the second switch in the closed position.
  • the reference 2 designates an earthing switch tumbler and the reference 4 a switch tumbler.
  • the tumbler 2 is rotatably mounted on a disconnector shaft 6 and the tumbler 4 is rotatably mounted on a switch shaft 8.
  • the shafts 6 and 8 are metallic. They are mounted between a front plate (not shown) mounted parallel to the rear plate. Columns 12 are mounted between the front plate and the rear plate. These columns serve to limit the rotational movement of the tumblers 2 and 4.
  • a spring 14 is mounted between the tumbler 2 and the tumbler 4.
  • the spring 14 is pivotally mounted at one end on the tumbler 2 about an axis of Earthing spring 16 and is pivotally mounted at its other end on the switch tumbler 4 about a switch spring axis 18.
  • a disc 20 is rotatably mounted on the same shaft 8 as the tumbler 4.
  • a rod 22 is pivotally mounted at one of its ends on the disc 20. At its other end, the rod 22 is pivotally mounted on a driver 24 which drives the switch through its axis.
  • a tumbler forming part of the mechanism of Figure 1. It comprises a central portion or hub 30 and two parallel flanges 32 connected to the central portion. Each of the flanges 32 has reception zones 34 in the shape of an arc of a circle. As can be seen in Figure 1, the receiving zones 34 are intended to receive the column 12 when the switch is moved from the open position to the closed position and vice versa.
  • FIG. 3 shows a perspective view of an earthing switch tumbler.
  • it comprises a central portion or hub 36 and two parallel flanges 38 on which are formed reception zones 40 in the shape of a circular arc intended to receive the corresponding column 12 when the tumbler moves from its open position to its closed position and vice versa.
  • the mechanism has been shown earthing switch in open position and switch in open position also. This mechanism is operated using a control lever that is placed on the front of the mechanism.
  • the tumbler 4 has rotated a few tens of degrees so that the axis 18 of the spring has moved, which leads to the neutral position shown in FIG. the spring is aligned with the pivot axis 8 of the tumbler. At this stage, only the tumbler 4 and the spring 14 are moving.
  • the spring 14 relaxes and takes the relay of the operator: it drives the tumbler switch 4 rotating.
  • the control lever is disengaged and no longer intervenes in the maneuver.
  • the tumbler switch rotated comes to hit the drive disk which is itself rotated.
  • the drive disk then rotates the driver via the connecting rod 22.
  • the function of the disk assembly 20, connecting rod 22, coach 24 is therefore to relocate the maneuver.
  • the operator turns the trumbler to a certain level, but the actual operation of the switch is higher with the coach 24.
  • the tumbler 2 directly actuates the earthing switch on the electrical equipment. There is therefore also a phase of energy accumulation (compression of the spring by the operator by means of the control lever) and a phase of release of this energy by the relaxation of the spring. However, the power released is less important because the compression stroke is lower.
  • the tumbler of the earthing switch thus passes from its open position shown in Figures 1, 4 and 5 to its closed position shown in Figure 6.
  • the tumblers 2 and 4 the disk 20, the rod 22 and the driver 24 are made of polyoxymethylene (POM).
  • thermoplastic material having a Young's modulus of between 1000 and 12000 MPa and a tensile strength of between 20 and 250 MPa.
  • Delrin 100® or Delrin 100ST® whose main mechanical characteristics are as follows.
  • plastic parts have a mechanical strength 4 to 5 times lower than that of equivalent parts made of steel or aluminum.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Eyeglasses (AREA)
  • Electromechanical Clocks (AREA)
  • Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
  • Breakers (AREA)
  • Toys (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)
EP06793415A 2005-09-13 2006-09-11 Mechanismus zum steuern einer stromverteilungszelle und tumbler dafür Active EP1925006B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0552751A FR2890779B1 (fr) 2005-09-13 2005-09-13 Mecanisme de commande d'une cellule de distribution de courant et tumbler pour ce mecanisme
PCT/EP2006/066236 WO2007031494A2 (fr) 2005-09-13 2006-09-11 Mecanisme de commande d'une cellule de distribution de courant et tumbler pour ce mecanisme

Publications (2)

Publication Number Publication Date
EP1925006A2 true EP1925006A2 (de) 2008-05-28
EP1925006B1 EP1925006B1 (de) 2010-06-30

Family

ID=36424054

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06793415A Active EP1925006B1 (de) 2005-09-13 2006-09-11 Mechanismus zum steuern einer stromverteilungszelle und tumbler dafür

Country Status (7)

Country Link
EP (1) EP1925006B1 (de)
CN (1) CN101263570B (de)
AT (1) ATE472813T1 (de)
DE (1) DE602006015207D1 (de)
ES (1) ES2348859T3 (de)
FR (1) FR2890779B1 (de)
WO (1) WO2007031494A2 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2934922A1 (fr) * 2008-08-05 2010-02-12 Areva T & D Sa Procede de desarmement manuel d'un mecanisme a double accrochage d'une commande d'appareillage electrique haute ou moyenne tension et commande associee.
FR3113335B1 (fr) 2020-08-10 2022-11-04 Schneider Electric Ind Sas Dispositif de verrouillage destiné à empêcher la mise à la terre d’un appareil de protection

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4644113A (en) * 1985-10-09 1987-02-17 Huang L D Electric safety device
DE3816108A1 (de) * 1988-05-11 1989-11-23 Asea Brown Boveri Elektrisches schaltgeraet
CN2062490U (zh) * 1990-02-26 1990-09-19 长沙市高压开关厂 带接地刀的户内高压隔离开关
DE9110741U1 (de) * 1991-08-30 1991-11-07 Buckel, Antonie, 91217 Hersbruck Mechanische Schalterverriegelung
CN2151528Y (zh) * 1993-04-12 1993-12-29 淮南煤矿机械厂 机械电气联锁装置
US5648646A (en) * 1995-06-19 1997-07-15 Reliance Time Controls, Inc. Circuit breaker linkage assembly
FR2795550B1 (fr) * 1999-06-28 2001-09-21 Legrand Sa Interrupteur comportant deux balais conducteurs, tels que permutateur ou interrupteur pour volet roulant

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007031494A3 *

Also Published As

Publication number Publication date
WO2007031494A2 (fr) 2007-03-22
EP1925006B1 (de) 2010-06-30
CN101263570A (zh) 2008-09-10
ES2348859T3 (es) 2010-12-03
FR2890779B1 (fr) 2008-01-18
CN101263570B (zh) 2011-12-07
WO2007031494A3 (fr) 2007-11-22
FR2890779A1 (fr) 2007-03-16
ATE472813T1 (de) 2010-07-15
WO2007031494B1 (fr) 2008-01-03
DE602006015207D1 (de) 2010-08-12

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