EP0532838B1 - Lock mechanism for operation openings in a switchgear installation - Google Patents

Lock mechanism for operation openings in a switchgear installation Download PDF

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Publication number
EP0532838B1
EP0532838B1 EP92110011A EP92110011A EP0532838B1 EP 0532838 B1 EP0532838 B1 EP 0532838B1 EP 92110011 A EP92110011 A EP 92110011A EP 92110011 A EP92110011 A EP 92110011A EP 0532838 B1 EP0532838 B1 EP 0532838B1
Authority
EP
European Patent Office
Prior art keywords
slide
locking device
closure
extension
crank
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.)
Expired - Lifetime
Application number
EP92110011A
Other languages
German (de)
French (fr)
Other versions
EP0532838A2 (en
EP0532838A3 (en
Inventor
Rolf Dirks
Udo Tisch
Horst Deharde
Wolfgang Pehlken
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.)
Felten and Guilleaume Energietechnik AG
Original Assignee
Felten and Guilleaume Energietechnik 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 Felten and Guilleaume Energietechnik AG filed Critical Felten and Guilleaume Energietechnik AG
Publication of EP0532838A2 publication Critical patent/EP0532838A2/en
Publication of EP0532838A3 publication Critical patent/EP0532838A3/en
Application granted granted Critical
Publication of EP0532838B1 publication Critical patent/EP0532838B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01H9/22—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts

Definitions

  • the invention relates to a locking device for actuating openings of switch drives in gas-insulated switchgear assemblies according to the preamble of claim 1.
  • a locking device for actuating openings of switch drives in gas-insulated switchgear assemblies according to the preamble of claim 1.
  • Such a device is described, for example, in DE-B-1193 144. It is known that in gas-insulated switchgear, certain drive openings must be closed for functional safety reasons during a switching operation via the switching drive. The same applies to the cable connection space, the door must be able to be locked or locked so that the door can only be opened under certain conditions.
  • a locking device according to the preamble of claim 1 is already known (advertising letter from distrel PY, year 3.79). However, this locking device has considerable safety deficiencies, since this locking can be released at every switching operation and at any time.
  • Another locking device (advertising lettering from PFISTERER, year 84) is also known. With this locking device, the front door and thus the access to the fuse carriers can only be opened if the earthing switch of the transformer field has been switched on. However, since any further locking of the earthing switch is missing, there is also the risk that, as soon as the front door is opened, improper handling of the earthing switch will result in a great safety risk for the operating personnel.
  • the invention has for its object to develop a further training of the switching safety system for gas-insulated switchgear of the type mentioned with the aim that as long as the cable connection space is not completely closed again and locked from the outside with a lock or sash, the actuating openings for ring cables , Transformer or earth electrode can also be locked securely.
  • this locking device closes a large security gap and ensures that an improper and thus dangerous switching operation cannot take place and that it basically forces the operator to close or lock the cable connection space before further switching operations.
  • the invention also allows the actuation openings for a ring cable field to be optionally closed, and the actuation openings of the earthing switch to be closed in a transformer field, which is necessary for maintenance work on transformer or transformer leads and fuses. For safety reasons, the earth electrode must never be switched off, it may only be switched off again after maintenance and locking of the door, lock or sash lock in the safety cable connection compartment.
  • Fig. 1 shows a locking device with cross slide
  • Fig. 2 shows a locking device with a vertical slide.
  • the locking device consists of a crank linkage 4 , which is mounted in the holder 5 .
  • the other side of the crank linkage 4 is connected via a fastening bushing 6 to a linkage lever 7a perpendicular to the axis of the crank linkage 4 and a return spring 8 under tension.
  • the articulation lever 7a is connected to the slide 9a and the guide slots 16 provided therein , which serve to receive the guide elements 10a , via an elongated hole 15 and a pivot pin 18 , so that the slide 9a is movable in the horizontal direction and the actuating opening 12 through a slot 11 (not shown) in the actuating shaft 2 and at the same time closes the door 1a of the cable connection space.
  • the crank linkage 4 and the cam extension 13b are provided with a safety cover 20 against mechanical manual action when the locking device is open.
  • the locking device consists of a crank linkage 4 which is mounted in a holder 5 .
  • the other side of the crank linkage 4 is connected via a fastening bush 6 to a link lever 7b and a return spring 8 under tension.
  • the articulation lever 7b is connected to the slide 9b , which is seated in a guide element designed as a slide box 10b , via an elongated hole 15 and a pivot pin 18 , which is introduced in the extension of the slide 9b , so that the slide 9b is movable in the vertical direction and Actuating opening 19 of the actuating shaft 2 and the extension member 13a simultaneously closes a flap 1b of the cable connection space.
  • the crank linkage 4 and the bolt 13a are provided with a safety cover 20 against mechanical manual action when the closure device is open.

Landscapes

  • Lock And Its Accessories (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Push-Button Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Patch Boards (AREA)

Abstract

2.1 In the case of gas-insulated switching installations, specific drive openings and the cable connecting space must be closed during a switching process, for safety reasons. However, such locks have the disadvantage that they can easily be circumvented as soon as the cable connecting space is open. 2.2 The invention indicates a way in which it is possible to close this large security gap. For this purpose, an additional connecting element is inserted between a closeable opening (1) and the operating shaft (4) in such a manner that the operating shaft (2) is locked as soon as the closure device (3a or 3b respectively) is opened, and is released when the closure device (3a or 3b respectively) is closed. 2.3 Such locking systems are used in medium-voltage switching installations, preferably in metal-encapsulated, compressed-gas-insulated switching installations. <IMAGE>

Description

Die Erfindung betrifft eine Verriegelungseinrichtung für Betätigungsöffnungen von Schaltantrieben in gasisolierten Schaltanlagen gemäß dem Oberbegriff des Anspruchs 1. Eine solche Einrichtung ist z.B. in DE-B-1193 144 beschrieben.
Es ist bekannt, daß bei gasisolierten Schaltanlagen bestimmte Antriebsöffnungen aus funktionalen Sicherheitsgründen bei einem Schaltvorgang über den Schaltantrieb verschlossen sein müssen. Das gleiche gilt für den Kabelanschlußraum, die Tür muß verschlossen bzw. verriegelt werden können, so daß ein Öffnen der Tür nur unter bestimmten Voraussetzungen möglich ist.The invention relates to a locking device for actuating openings of switch drives in gas-insulated switchgear assemblies according to the preamble of claim 1. Such a device is described, for example, in DE-B-1193 144.
It is known that in gas-insulated switchgear, certain drive openings must be closed for functional safety reasons during a switching operation via the switching drive. The same applies to the cable connection space, the door must be able to be locked or locked so that the door can only be opened under certain conditions.

Eine Verriegelungseinrichtung nach dem Oberbegriff des Anspruchs 1 ist bereits bekannt (Werbeschrift von distrel PY, Jahrg. 3.79). Diese Verriegelungseinrichtung weist jedoch erhebliche Sicherheitsmängel auf, da diese Verriegelung bei jedem Schaltvorgang und zu jedem Zeitpunkt aufgehoben werden kann.A locking device according to the preamble of claim 1 is already known (advertising letter from distrel PY, year 3.79). However, this locking device has considerable safety deficiencies, since this locking can be released at every switching operation and at any time.

Eine weitere Verriegelungseinrichtung (Werbeschrift von PFISTERER, Jahrg. 84) ist zudem bekannt. Bei dieser Verriegelungseinrichtung läßt sich die Fronttür und damit der Zugang zu den Sicherungsträgern nur öffnen, wenn der Erdungsschalter des Trafofeldes eingeschaltet wurde. Da aber jede weitere Verriegelung des Erdungsschalters fehlt, besteht auch hier die Gefahr, daß, sobald die Fronttür geöffnet ist, durch eine unsachgemäße Handhabung der Erdungsschalter in Ausstellung gebracht wird und so ein großes Sicherheitsrisiko für das Bedienungspersonal entsteht.Another locking device (advertising lettering from PFISTERER, year 84) is also known. With this locking device, the front door and thus the access to the fuse carriers can only be opened if the earthing switch of the transformer field has been switched on. However, since any further locking of the earthing switch is missing, there is also the risk that, as soon as the front door is opened, improper handling of the earthing switch will result in a great safety risk for the operating personnel.

Der Erfindung liegt die Aufgabe zugrunde, eine weiterführende Ausbildung des Schaltsicherheitssystems für gasisolierte Schaltanlagen der eingangs geschilderten Art mit dem Ziel zu entwikkeln, daß, solange der Kabelanschlußraum nicht voll ständig wieder verschlossen und von außen mit einem Schloß oder Vorreiber verriegelt ist, die Betätigungsöffnungen für Ringkabel, Trafo oder Erder zusätzlich und sicher verschlossen werden können.The invention has for its object to develop a further training of the switching safety system for gas-insulated switchgear of the type mentioned with the aim that as long as the cable connection space is not completely closed again and locked from the outside with a lock or sash, the actuating openings for ring cables , Transformer or earth electrode can also be locked securely.

Diese Aufgabe wird erfindungsgemäß mit den konstruktiven Merkmalen des Hauptanspruchs gelöst.This object is achieved with the design features of the main claim.

Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, daß diese Verriegelungseinrichtung eine große Sicherheitslücke schließt und gewährleistet, daß eine unsachgemäße und damit gefährliche Schalthandlung nicht erfolgen kann und sie den Bedienenden grundsätzlich dazu zwingt, vor weiteren Schalthandlungen den Kabelanschlußraum zu verschließen bzw. zu verriegeln. Die Erfindung erlaubt jedoch auch das wahlweise Verschließen der Betätigungsöffnungen für ein Ringkabelfeld, sowie das Verschließen der Betätigungsöffnungen des Erdungsschalters in einem Trafofeld, was bei Wartungsarbeiten an Trafo-oder Trafozuleitungen und Sicherungen notwendig ist. Hierbei darf aus Sicherheitsgründen der Erder auf keinen Fall ausgeschaltet sein, er darf erst nach Wartung und Verschließen der Tür bzw. des Schlosses oder Vorreibers im Sicherungskabelanschlußraum wieder ausgeschaltet werden.The advantages that can be achieved with the invention are, in particular, that this locking device closes a large security gap and ensures that an improper and thus dangerous switching operation cannot take place and that it basically forces the operator to close or lock the cable connection space before further switching operations. However, the invention also allows the actuation openings for a ring cable field to be optionally closed, and the actuation openings of the earthing switch to be closed in a transformer field, which is necessary for maintenance work on transformer or transformer leads and fuses. For safety reasons, the earth electrode must never be switched off, it may only be switched off again after maintenance and locking of the door, lock or sash lock in the safety cable connection compartment.

Vorteilhafte Aus- und Weiterbildungen des Gegenstandes nach Anspruch 1 sind den Unteransprüchen zu entnehmen.Advantageous training and further developments of the subject matter according to claim 1 can be found in the subclaims.

Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden im folgenden näher erläutert. Es zeigen
Fig. 1 eine Verriegelungseinrichtung mit Querschieber
Fig. 2 eine Verriegelungseinrichtung mit Senkrechtschieber.Embodiments of the invention are shown in the drawings and are explained in more detail below. Show it
Fig. 1 shows a locking device with cross slide
Fig. 2 shows a locking device with a vertical slide.

Nach Fig. 1 besteht die Verriegelungseinrichtung aus einem Kurbelgestänge 4, das in dem Halter 5 gelagert wird. Die einseitig außerhalb des Halters 5 angebrachte Kurbel 14 liegt an einer Vorreiberverlängerung 13b des Vorreibers 3b an. Die andere Seite des Kurbelgestänges 4 ist über eine Befestigungsbuchse 6 mit einem senkrecht zur Achse des Kurbelgestänges 4 stehenden Anlenkhebel 7a und einer unter Zug stehenden Rückholfeder 8 verbunden. Der Anlenkhebel 7a ist mit dem Schieber 9a und den darin angebrachten Führungsschlitzen 16, die zur Aufnahme der Führungselemente 10a dienen, über ein Langloch 15 und einen Gelenkzapfen 18 verbunden, sodaß der Schieber 9a in horizontaler Richtung beweglich ist und die Betätigungsöffnung 12 durch einen Schlitz 11 (nicht dargestellt) in der Betätigungswelle 2 und gleichzeitig die Tür 1a des Kabelanschlußraums verschließt. Gegen mechanische Handeinwirkung bei geöffneter Verschlußeinrichtung ist das Kurbelgestänge 4 sowie die Vorreiberverlängerung 13b mit einer Sicherheitsverkleidung 20 versehen.1, the locking device consists of a crank linkage 4 , which is mounted in the holder 5 . The crank 14, which is attached on one side outside the holder 5, rests on a sash extension 13b of the sash 3b . The other side of the crank linkage 4 is connected via a fastening bushing 6 to a linkage lever 7a perpendicular to the axis of the crank linkage 4 and a return spring 8 under tension. The articulation lever 7a is connected to the slide 9a and the guide slots 16 provided therein , which serve to receive the guide elements 10a , via an elongated hole 15 and a pivot pin 18 , so that the slide 9a is movable in the horizontal direction and the actuating opening 12 through a slot 11 (not shown) in the actuating shaft 2 and at the same time closes the door 1a of the cable connection space. The crank linkage 4 and the cam extension 13b are provided with a safety cover 20 against mechanical manual action when the locking device is open.

Nach Fig. 2 besteht die Verriegelungseinrichtung aus einem Kurbelgestänge 4, das in einem Halter 5 gelagert wird. Die einseitig außerhalb des Halters 5 angebrachte Kurbel 14 liegt an einem Verlängerungsglied 13a des Vorreibers 3b an. Die andere Seite des Kurbelgestänges 4 ist über eine Befestigungsbuchse6 mit einem Anlenkhebel 7b und eine unter Zug stehenden Rückholfeder 8 verbunden. Der Anlenkhebel 7b ist mit dem Schieber 9b, der in einem als Schieberkasten 10b ausgebildeten Führungselement sitzt, über ein Langloch 15 und einem Gelenkzapfen 18, der in der Verlängerung des Schiebers9b eingebracht ist verbunden, sodaß der Schieber 9b in vertikaler Richtung beweglich ist und die Betätigungsöffnung 19 der Betätigungswelle 2 und das Verlängerungsglied 13a gleichzeitig eine Klappe 1b des Kabelanschlußraums verschließt. Gegen mechanische Handeinwirkung bei geöffneter Verschlußeinrichtung ist das Kurbelgestänge 4 sowie der Riegel 13a mit einer Sicherheitsverkleidung 20 versehen.2, the locking device consists of a crank linkage 4 which is mounted in a holder 5 . The crank 14, which is attached on one side outside the holder 5, bears against an extension member 13a of the sash 3b . The other side of the crank linkage 4 is connected via a fastening bush 6 to a link lever 7b and a return spring 8 under tension. The articulation lever 7b is connected to the slide 9b , which is seated in a guide element designed as a slide box 10b , via an elongated hole 15 and a pivot pin 18 , which is introduced in the extension of the slide 9b , so that the slide 9b is movable in the vertical direction and Actuating opening 19 of the actuating shaft 2 and the extension member 13a simultaneously closes a flap 1b of the cable connection space. The crank linkage 4 and the bolt 13a are provided with a safety cover 20 against mechanical manual action when the closure device is open.

Bezugzeichenliste zur BeschreibungReference symbol list for description

11
Verschlußmittel für eine Öffnung, 1a Tür, 1b KlappeClosing means for an opening, 1a door, 1b flap
22nd
Betätigungswelle eines SchaltantriebesActuating shaft of a switching drive
33rd
Verschlußeinrichtung, 3a Schloß, 3b VorreiberLocking device, 3a lock, 3b sash
44th
KurbelgestängeCrank linkage
55
Halter für KurbelgestängeCrank linkage holder
66
BefestigungsbuchseMounting bush
77
AnlenkhebelLink lever
88th
RückholfederReturn spring
99
Schieber, 9a Querschieber, 9b SenkrechtschieberSlide, 9a cross slide, 9b vertical slide
1010th
Führungselemente, 10a Führungsstifte, 10b SchieberkastenGuide elements, 10a guide pins , 10b slide box
1111
Schlitz in der BetätigungswelleSlot in the actuation shaft
1212th
BetätigungsöffnungActuation opening
1313
Verlängerungsglied, 13a Riegel, 13b VorreiberverlängerungExtension link, 13a latch, 13b fastener extension
1414
Kurbelcrank
1515
LanglochLong hole
1616
FührungsschlitzGuide slot
1717th
Schieberverlängerung, 17a Querschieberverlängerung, 17b SenkrechtverlängerungSlide extension, 17a cross slide extension , 17b vertical extension
1818th
GelenkzapfenHinge pin
1919th
Öffnung im SchieberkastenOpening in the slide box
2020th
SichheitsverkleidungSecurity cladding

Claims (13)

  1. Locking device for operating openings of switching drives, having a locking element between a closure means (1, 1a, 1b) for an opening to the cable or fuse connection area and having an operating shaft (2) for the switching drive of a switching installation, characterized in that an additional connecting element is inserted between the closure means (1a, 1b) and the operating shaft (2) and consists of a crank arrangement (4) which on the one hand corresponds with a closure device (3a or 3b respectively) for the opening and on the other hand is connected to a slide (9a or 9b respectively) which engages in a locking opening (11 or 19 respectively) of the operating shaft (2) in such a manner that, when the closure device (3a or 3b respectively) is open, the operating shaft (2) is locked, and it is released when the closure device (3a or 3b respectively) is closed, and in that the crank arrangement (4) and the closure device (3a or 3b respectively) are provided with cladding (20).
  2. Locking device according to Claim 1, characterized in that the crank arrangement (4) is double-mounted in a holder (5) and is provided with a crank (14) on one side outside the holder (5), which crank (14) rests on a connecting element (13a or 13b respectively) which is connected to the closure device (3a or 3b respectively), and in that the crank arrangement (4) has, on the other side outside the holder (5), a hinge lever (7) which is subject to tension from a return spring (8) and is connected via a fastening bush (6) to the crank arrangement (4).
  3. Locking device according to one of Claims 1 or 2, characterized in that the hinge lever (7) is connected in a hinged manner to the slide (9a or 9b respectively), the hinge lever (7) having an elongated hole (15) on the side facing the slide (9a or 9b respectively), and in that the slide (9a or 9b respectively) is guided in guide elements (10a or 10b respectively).
  4. Locking device according to one of Claims 1 to 3, characterized in that the slide (9a) is movable in the horizontal direction.
  5. Locking device according to one of Claims 1 to 3, characterized in that the slide (9b) is movable in the vertical direction.
  6. Locking device according to Claim 4, characterized in that the slide (9a) has two guide slots (16) in which guide elements which are connected to the switching installation and are constructed as guide pins (10a) are movable in a sliding manner, and in that the slide (9a) is provided on the side facing the hinge lever (7) with a slide extension (17) in which the hinge pin (18) for the hinge lever (7) is inserted.
  7. Locking device according to Claim 5, characterized in that the slide (9b) is movable in a guide element which is constructed as a slide box (10b), the slide box (10b) having an opening (19) which corresponds with the operating opening (12).
  8. Locking device according to one of Claims 1 to 7, characterized in that the closure device is a lock (3a) whose bolt (13a) corresponds with the crank arrangement (4).
  9. Locking device according to one of Claims 1 to 8, characterized in that the closure device is a turnbuckle (3b) whose extension (13b) corresponds with the crank arrangement (4).
  10. Locking device according to one of Claims 1 to 9, characterized in that the closure means is a door (1a).
  11. Locking device according to one of Claims 1 to 9, characterized in that the closure means is a flap (1b).
  12. Locking device according to one of Claims 1 to 11, characterized in that the slide extension is a transverse slide extension (17a).
  13. Locking device according to one of Claims 1 to 11, characterized in that the slide extension is a vertical slide extension (17b).
EP92110011A 1991-09-20 1992-06-13 Lock mechanism for operation openings in a switchgear installation Expired - Lifetime EP0532838B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4131328 1991-09-20
DE4131328A DE4131328A1 (en) 1991-09-20 1991-09-20 LOCKING DEVICE FOR OPERATING OPENINGS OF SWITCHING DRIVES

Publications (3)

Publication Number Publication Date
EP0532838A2 EP0532838A2 (en) 1993-03-24
EP0532838A3 EP0532838A3 (en) 1993-06-09
EP0532838B1 true EP0532838B1 (en) 1995-08-16

Family

ID=6441075

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92110011A Expired - Lifetime EP0532838B1 (en) 1991-09-20 1992-06-13 Lock mechanism for operation openings in a switchgear installation

Country Status (4)

Country Link
EP (1) EP0532838B1 (en)
AT (1) ATE126626T1 (en)
DE (2) DE4131328A1 (en)
ES (1) ES2077299T3 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19503624C1 (en) * 1995-01-26 1996-07-25 Siemens Ag Device for influencing a travel drive of a switching device
DE19747987A1 (en) * 1997-10-30 1999-05-06 Asea Brown Boveri Security door locking system for control cabinets
DE10116895C1 (en) * 2001-04-04 2003-01-30 Felten & Guilleaume Ag Actuator for a disconnector
JP4257990B2 (en) * 2002-04-12 2009-04-30 三菱電機株式会社 Pull-out type circuit breaker
DE102006012056B3 (en) * 2006-03-08 2007-08-09 Siemens Ag Actuation openings locking device for e.g. medium-voltage switch gear, has slides coupled with each other by locking latches and locking lever, such that one slide is locked in locking position when other slide is in release position
CN104025230B (en) * 2011-12-30 2017-02-15 Abb技术有限公司 Mechanical Interlock Device Among Cable Door, Rear Door And Earthing Switch
CN102709080A (en) * 2012-05-24 2012-10-03 辽宁省电力有限公司沈阳供电公司 Grounding interlocking mechanism for low voltage plastic casing switch
CN103093984B (en) * 2013-01-17 2017-02-08 国家电网公司 Switchgear earthing switch and cable room door interlocking mechanism

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1193144B (en) * 1962-04-24 1965-05-20 Licentia Gmbh Electrical switchgear with detachable coupling between the drive and the switching mechanism
US3207880A (en) * 1963-01-14 1965-09-21 Square D Co Independently mounted circuit breaker and operating handle with driving connection therebetween self-compen-sating for misalignment

Also Published As

Publication number Publication date
EP0532838A2 (en) 1993-03-24
ATE126626T1 (en) 1995-09-15
DE4131328A1 (en) 1993-03-25
DE59203283D1 (en) 1995-09-21
EP0532838A3 (en) 1993-06-09
ES2077299T3 (en) 1995-11-16

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