DE10117092A1 - Actuating means for actuating switching paths of a circuit breaker of an electrical switchgear arrangement - Google Patents

Abstract

An operating device (OD) (1) has a distributor element (3) guided on a switchboard section structure and made to slide by an operating element transverse to the operating motion (6) of breaks. The OD also has a transmission element (7) guided on the distributor element and moved parallel to the operating motion. The distributor element and/or the transmission element are guided in such a way that sliding motion in the distributor element crosswise to the operating motion of the breaks leads to motion in the transmission element parallel to the operating motion of the breaks and also activates the breaks. An Independent claim is also included for an electrical switchboard section structure for inserting in a switchboard plant.

Description

The present invention relates to actuating means for Actuation of one or more switching distances of one Circuit breaker of an electrical panel arrangement. The Actuating means have an actuating element for actuation of the switching distances. The invention also relates to a electrical panel arrangement for use in a Switchgear, with at least one circuit breaker, the Switching distances by means of actuation with a Actuating element can be actuated.

One or more electrical panel arrangements, with their Help high and medium voltage circuits on and can be switched off, form a switchgear. A  Control panel arrangement has next to a circuit breaker usually also disconnect and earthing switches. Circuit breakers are capable of operating and To switch short-circuit currents. Disconnectors are getting close switched off; they put one when you turn it off reliably displayed separation distance. earthing switch usually have a short-circuit making capacity and are used for Safe grounding of the system parts separated from the mains. separating and earthing switches are used to protect people and Operating resources in high and medium voltage systems. there disconnectors are electrically in series with the Circuit breakers arranged. When interrupting a Arcs occur, the extinguishing of which is the task of Circuit breaker is. After the extinguishing agent, air, oil and and pressure gas switch differentiated. With the help of a Extinguishing agent flow is one in switch poles Circuit breaker intensive cooling of the arc and this brings about a quick shutdown. Another Technology provide the panel arrangements with so-called vacuum Circuit breakers are in the medium voltage range have introduced about 40 kV.

The circuit breaker circuit breakers point usually three switching distances, one for each phase switching current on a switching path. To operate the Switching distances of a circuit breaker Actuating means used, usually only one  Have actuating element, the actuating movement about suitable gearboxes or deflection devices to all Switching distances of the circuit breaker is transmitted.

Actuating means from the prior art are the beginning mentioned type known in different embodiments. The known actuators differ especially in the way the actuation movement of the actuator on the switching paths of the Circuit breaker is transmitted. From the state of the art are known, for example, actuating means for each Switching path have a lever element, the rotary Lever movement in a substantially linear Actuating movement of the switching path is deflected. The Lever movement of the lever elements is by the Actuating element of the actuating means generated.

The known actuators have the disadvantage that they a rather complex structure with a multitude of movable, in particular rotatable relative to each other, Components.

It is therefore the object of the present invention To create actuating means of the type mentioned, the a particularly simple structure, especially with possible few components.  

To achieve this object, the invention proposes starting from the actuating means of the type mentioned above that the actuating means by the actuating element in Essentially transverse to the actuating movement of the Switching distances slidable and on the panel arrangement guided distributor element and a substantially parallel to the actuating movement of the switching paths movable on the Have control panel arrangement guided transmission element with which the switching paths are connected. The Distribution element and the transmission element are such led relative to each other that a displacement movement of the Distribution element substantially across the Actuation movement to a movement of the transmission element essentially parallel to the actuation movement and to actuation of the switching sections.

The actuating means according to the invention have Distribution element and a transmission element. The Distribution element is from the actuator in Essentially transverse to the actuating movement of the Shifting distances shifted. The transmission element is on the Panel arrangement substantially parallel to that Actuating movement of the switching sections guided and is connected to the switching paths. A Movement of the distributor element leads to a Movement of the transmission element and thus to one Actuation of the switching sections.  

The actuating means according to the invention have a special simple construction with very few components. they are particularly robust and less susceptible to wear or other failures.

According to a preferred embodiment of the present Invention is proposed that the distributor element and the transmission element over guide grooves and therein guided guide elements are guided relative to each other. The distributor element advantageously has guide grooves on, in which guide elements of the transmission element are guided. The course of the guide grooves is such that a displacement movement of the distributor element in the Essentially transverse to the actuating movement of the Switching distances to a movement of the transmission element in the Leads essentially parallel to the actuation movement. The Parallel movement is transferred to the switching distances, and the switching sections are switched on or off.

There are a number of possibilities, like that Distribution element and the transmission element on the Panel arrangement can be performed. Be particular here suitable linkages (lever elements) and gears (others Guide grooves) mentioned, the design of which is relevant Adapt the specialist in detail to the respective application becomes.  

According to an advantageous development of the present Invention it is proposed that the distributor element over at least two lever elements on the panel arrangement is led. The lever elements are arranged so that the Distribution element a movement relative to the Panel arrangement essentially transverse to the Can perform actuating movement of the switching paths. More accurate said, the lever elements are at their first end on the Panel arrangement and with its opposite second End rotatably attached to the distributor element, so that the point of attachment of the distributor element to the second End of the lever element around the attachment point on the Panel arrangement rotates on a circular arc. With relative small deflections of the lever element and one corresponding arrangement of the lever elements can this circular arc-shaped movement as essentially transverse to that Actuating movement can be called progressive.

It is further suggested that the Transmission element via at least one further lever element is guided on the panel arrangement. The further Lever element is arranged so that the transmission element a movement relative to the panel arrangement in the Essentially parallel to the actuation movement of the Can perform switching distances. To be more precise, that is further Lever element with its first end on the panel arrangement and with its opposite second end at that  Transmission element rotatably attached so that the Attachment point of the transmission element at the second end the lever element around the attachment point on the Panel arrangement rotates on a circular arc. With relative small deflections of the further lever element and one corresponding arrangement of the further lever element can this circular arc motion as being substantially parallel to that Actuating movement can be called progressive.

Alternatively, according to another advantageous one Further development of the present invention proposed that the distributor element over at least two more Guide grooves and others slidably mounted therein Guide elements is guided on the panel arrangement. The further guide grooves advantageously run in the Essentially transverse to the actuating movement of the Switching paths. The distributor element preferably has at least two more guide grooves in which more Guide elements of the panel arrangement slidably mounted are.

It is further suggested that the Transmission element over at least two more Guide grooves and others slidably mounted therein Guide elements is guided on the panel arrangement. The further guide grooves advantageously run in the Essentially parallel to the actuation movement of the  Switching paths. Preferably, the transmission element at least two more guide grooves in which more Guide elements of the panel arrangement slidably mounted are.

According to a preferred embodiment of the present Invention it is proposed that the transmission element two spaced apart and parallel to each other Has transmission element plates, between which the Distribution element is arranged. This makes it special space-saving design of the invention Actuating means possible. The transmission element is advantageously as a profile with a U-shaped cross section educated. Form the two legs of the U-shaped profile the arranged parallel to each other Transfer element plates. Is between the two legs the distributor element arranged.

To ensure a safe closed position of the switching distances of the To ensure circuit breaker is according to a advantageous development of the present invention suggested that the actuating means means of production a contact force between switching contacts Switching distances when the switching distances are closed have that between the actuator and the Switching distances are arranged. It is conceivable that the Contact strength through appropriate training of  Guide grooves is generated. This could be the guide grooves a guide area with a relatively small slope have along which the distributor element or Transmission element is guided when the switching distances are already closed. This will close to the Switch contacts exerted a contact force.

The means for generating a are advantageously Contact force formed as contact force springs between the transmission element and the switching distances act. The Guide grooves between the distributor element and the Transmission element are designed so that Transmission element is guided further along a slope, So continue towards the closed position of the switching sections is moved, although the switching distances are already closed are. As a result, a contact force acts on the switch contacts of the switching distances, the magnitude of the contact force from the Design of the contact force springs is dependent. The Contact force springs are advantageously cylindrical Helical compression springs designed.

The guide grooves between the distributor element and the Transmission element have an increasing course. The The slope of the guide grooves must be designed so that the Moving the distributor element substantially across the Actuating movement of the switching paths to a sufficient large movement of the transmission element essentially  leads parallel to the actuation movement of the switching sections, around the switching contacts of the switching paths at least from their open to a contact-touching position and vice versa to be able to convince. If on the switch contacts in their contact contact position additionally a contact force should be exercised, the guide grooves must be designed so be that a further movement of the distributor element in the Another essentially transverse to the actuating movement Movement of the transmission element in the direction of closed position of the switch contacts.

According to yet another advantageous development of the The present invention proposes that the Guide grooves two merging guide areas have different slopes, with the First close the switching paths Guide area with the larger slope for moving the Switch contacts of the switching paths from the open to the contact position and then the second guide area with the smaller pitch to compress Contact force springs and for generating contact force on the Run through switch contacts in the contact-making position becomes.

According to a preferred embodiment of the present Invention it is proposed that the second management area passes into a third management area that is almost across  the actuation movement of the switching paths and Define the switching contacts of the switching paths in the position under contact force.

A fourth management area, the almost transverse to the actuation movement of the switching sections runs and to set the switch contacts in the open position is used in the first management area.

Starting from the electrical panel arrangement of the it is also proposed that the actuating means for the panel arrangement as the Actuating means according to the invention are formed.

According to an advantageous development of the present Invention it is proposed that the panel arrangement as a gas-insulated panel arrangement is formed. to Isolation of the panel arrangement is preferably SF6 gas used. The advantages of the invention Actuating means, namely a simple and compact structure from a few components, especially in gas-insulated Panel arrangements to carry.

Other features, applications and advantages of the Invention result from the following description of Embodiments of the invention shown in the drawing are shown. Thereby form all described or  presented features alone or in any combination the subject of the invention, regardless of its Summary in the claims or their Relationship and regardless of their wording or Representation in the description or in the drawing. It demonstrate:

Fig. 1 according to the invention operating means for operating the switching paths of a circuit breaker of an electrical switchgear arrangement according to a first embodiment in a view from the front;

Fig. 2 shows the actuating means of Figure 1 in section along the line II-II.

Figure 3 is a guide groove of the operating means with switching contacts of the interrupters in the closed position.

Figure 4 shows the guide groove with the switch contacts when contacting.

Figure 5 shows the guide groove with switch contacts in the open position.

Fig. 6 shows the switch contacts in the closed position, wherein contact touch and in the open position;

Fig. 7 actuating means according to the invention for actuating the switching distances of a circuit breaker of an electrical switchgear arrangement according to a second embodiment in a view from the front,. partly in section; and

Fig. 8, the actuating means of Fig. 7 in section along the line VIII-VIII.

In FIG. 1, actuating means for actuating switching paths of a circuit breaker of an electrical switchgear arrangement are identified in their entirety with reference number 1 . The actuating means 1 are arranged in a housing 2 of the electrical switch panel arrangement. The actuating means 1 have a distributor element 3 , in which two guide grooves 4 are embedded. The distributor element 3 is guided by means of two lever elements 5 essentially transversely to an actuation movement 6 of the switching paths of the circuit breaker (not shown) on the switch panel arrangement (movement 17 ). One end 5 a of the lever elements 5 is pivotally mounted on the distributor element 3 and the other end 5 b of the lever elements 5 is pivotally mounted on the panel arrangement. The distributor element 3 is displaced essentially transversely to the actuating movement 6 of the switching sections by an actuating element (not shown) of the actuating means 1 .

The actuating means 1 furthermore have a transmission element 7 through which the distributor element 3 is indirectly connected to the switching paths. Three rod members 8 are fixed to the transmitting member 7, which establish the connection of the transmitting member 7 with the switching paths. The transmission element 7 is fastened to the switch panel arrangement by means of a further lever element 9 . A first end 9 a of the lever element 9 is pivotally articulated on the transmission element 7 and the second end 9 b on the panel arrangement. The lever element 9 prevents movement of the transmission element 7 in a direction substantially transverse to the actuation movement of the switching sections and only allows movement of the transmission element 7 in a direction substantially parallel to the actuation movement 6 of the switching sections (movement 18 ).

The transmission element 7 has two guide elements 10 which are slidably guided in the guide grooves 4 of the distributor element 3 . The guide grooves 4 have an oblique course, so that a displacement of the distributor element 3 essentially transversely to the actuating movement 6 of the switching sections leads to a movement of the transmission element 7 essentially parallel to the actuating movement 6 of the switching sections and to an actuation of the switching sections. In the illustrated in Fig. 1 position of the actuating means 1, the switching path of the circuit breaker are closed. In order to bring the switch contacts of the switching paths into the open position, the distributor element 3 in FIG. 1 must be shifted to the right (dashed line of the lever elements 5 ), the transmission element 7 leads, guided by the guide grooves 4 , a movement parallel to the actuating movement 6 Switching distances downwards (dashed line of the lever element 9 ), whereby the switching contacts are brought into an open position.

The actuating means 1 finally have contact force springs designed as cylindrical helical compression springs 13 for generating a contact force between the switching contacts of the switching paths of the circuit breaker. The helical compression springs 13 are arranged between the actuating element and the switching sections, more precisely in the rod elements 8 . They act between the transmission element 7 and the switching paths.

Fig. 2 shows the actuating means 1 of Fig. 1 in section along the line II-II. Matching components are identified by the same reference numerals.

In FIGS. 3 to 5, the guide grooves 4, the distributor element 3 shown in detail. Only the guide means 10 of the transmission element 7 are shown. The switching distances of the circuit breaker of the electrical switchgear arrangement are designated by 12 and the switch contacts by 11. The rod elements 8 extend from the transmission element 7 (in the simplified illustration of FIGS. 3 to 5 from the guide element 10 ) to the switch contacts 11 of the switching paths 12 of the circuit breaker. The switch contacts 11 of the switching section 12 are in the Fig. 3 in a closed position in Fig. 4 in contact touch and in Fig. 5 in the open position. By shifting the distributor element 3 substantially transversely to the actuation movement 6 of the switching sections 12 , the guide element 10 of the transmission element 7 is displaced in the guide groove 4 and the displacement movement of the distributor element 3 is deflected into a movement essentially parallel to the actuation movement 6 , which leads to an actuation of the Switching distance 12 leads.

The guide grooves 4 have several guide areas. The two main guide areas of the guide grooves 4 are two merging guide areas 4 a, 4 b with different slopes. When the switching sections 12 are closed, the first guide area 4 a with the larger slope and then the second guide area 4 b with the smaller slope are passed through. The first guide area 4 a is traversed by displacing the distributor element 3 by the distance v1 and leads to an actuation movement s1 (cf. FIG. 6). The actuation movement s1 serves to move the switch contacts 11 of the switching paths 12 from the open position ( FIG. 5) to the contact-contact position ( FIG. 4). The second guide area 4 b is moved through by moving the distributor element 3 by the distance v2 and leads to an actuation movement s2. The actuating movement s2 serves to deflect the contact force springs 13 in the contact-contacting position of the switching contacts 11 ( FIG. 4).

The second guide area 4 b merges into a third guide area 4 c, which runs almost transversely to the actuating movement 6 of the switching sections 11 . The third guide area serves to fix the switch contacts 11 of the switching paths 12 in the spring-in position ( FIG. 3). A fourth guide area 4 d, which runs almost transversely to the actuating movement 6 of the switching sections 11 , merges into the first guide area 4 a. The fourth guide area 4 d serves to fix the switch contacts 11 in the open position ( FIG. 5).

FIGS. 7 and 8 show operating means 1 according to a second embodiment of the present invention in a side view and taken along the line VIII-VIII in section. The same reference numerals have been used for matching components.

In contrast to the first embodiment, the distributor element 3 in FIGS . 7 and 8 is not guided by means of lever elements 5 but rather by means of further guide grooves 14 on the switch panel arrangement. The further guide grooves 14 run transversely to the actuation movement 6 of the switching sections 12 . Further guide elements 15 are slidably received in the further guide grooves 14 . Due to the interaction of the further guide grooves 14 and the further guide elements 15 , the distributor element can only be displaced transversely to the actuating movement 6 of the switching sections 12 . Likewise, the transmission element 7 is not guided by means of a lever element 9 , but rather by means of further guide grooves 16 on the switch panel arrangement. The further guide grooves 16 run parallel to the actuation movement 6 of the switching sections 12 . The further guide elements 15 are slidably received in the further guide grooves 16 . Due to the interaction of the further guide grooves 16 and the further guide elements 15 , the transmission element 7 can only be displaced parallel to the actuating movement 6 of the switching sections 12 .

The distributor element 3 and the transmission element 7 have a U-shaped cross section. As a result, the actuating means 1 according to the invention can be designed to be particularly space-saving. The transmission element 7 is arranged within the distributor element 3 and the helical compression springs 13 are arranged within the transmission element 7 .

Claims (21)

1. Actuating means ( 1 ) for actuating one or more switching sections ( 12 ) of a circuit breaker of an electrical switchgear arrangement, with an actuating element, characterized in that the actuating means ( 1 ) through the actuating element essentially transversely to the actuating movement ( 6 ) of the switching sections ( 12 ) have a displaceable distributor element ( 3 ) guided on the switchgear arrangement and a transmission element ( 7 ) which is movable on the switchgear arrangement and which is essentially parallel to the actuating movement ( 6 ) of the switch gears ( 12 ) and with which the switch gears ( 12 ) are connected , wherein the distributor element ( 3 ) and the transmission element ( 7 ) are guided relative to one another such that a displacement movement of the distributor element ( 3 ) substantially transversely to the actuation movement ( 6 ) to a movement of the transmission element ( 7 ) essentially parallel to the actuation movement ( 6 ) and leads to actuation of the switching sections ( 12 ). 2. Actuating means ( 1 ) according to claim 1, characterized in that the distributor element ( 3 ) and the transmission element ( 7 ) are guided relative to one another via guide grooves ( 4 ) and guide elements ( 10 ) guided therein. 3. Actuating means ( 1 ) according to claim 2, characterized in that the distributor element ( 3 ) has guide grooves ( 4 ), in which guide elements ( 10 ) of the transmission element ( 7 ) are slidably guided. 4. Actuating means ( 1 ) according to one of claims 1 to 3, characterized in that the distributor element ( 3 ) via at least two lever elements ( 5 ) is guided on the panel arrangement. 5. Actuating means ( 1 ) according to one of claims 1 to 4, characterized in that the transmission element ( 7 ) is guided via at least one further lever element ( 9 ) on the control panel arrangement. 6. Actuating means ( 1 ) according to one of claims 1 to 5, characterized in that the distributor element ( 3 ) via at least two further guide grooves ( 14 ) and slidably mounted further guide elements ( 15 ) is guided on the panel arrangement. 7. Actuating means ( 1 ) according to claim 6, characterized in that the further guide grooves ( 14 ) extend substantially transversely to the actuating movement ( 6 ) of the switching sections ( 12 ). 8. Actuating means ( 1 ) according to claim 6 or 7, characterized in that the distributor element ( 3 ) has at least two further guide grooves ( 14 ), in which further guide elements ( 15 ) of the panel arrangement are slidably mounted. 9. Actuating means ( 1 ) according to one of claims 1 to 8, characterized in that the transmission element ( 7 ) on at least two further guide grooves ( 16 ) and slidably mounted further guide elements ( 15 ) is guided on the panel arrangement. 10. Actuating means ( 1 ) according to claim 9, characterized in that the further guide grooves ( 16 ) run substantially parallel to the actuating movement ( 6 ) of the switching sections ( 12 ). 11. Actuating means ( 1 ) according to claim 9 or 10, characterized in that the transmission element ( 7 ) has at least two further guide grooves ( 16 ), in which further guide elements ( 15 ) of the panel arrangement are slidably mounted. 12. Actuating means ( 1 ) according to one of claims 1 to 11, characterized in that the transmission element ( 7 ) has two at a distance and parallel to each other arranged transmission element plates, between which the distributor element ( 3 ) is arranged. 13. Actuating means ( 1 ) according to claim 12, characterized in that the transmission element ( 7 ) is designed as a profile with a U-shaped cross section. 14. Actuating means ( 1 ) according to one of claims 1 to 13, characterized in that the actuating means ( 1 ) have means for generating a contact force between switching contacts ( 11 ) of the switching sections ( 12 ) when the switching sections ( 12 ) are closed, which are arranged between the actuating element and the switching sections ( 12 ). 15. Actuating means ( 1 ) according to claim 14, characterized in that the means for generating a contact force are designed as contact force springs ( 13 ) which act between the transmission element ( 7 ) and the switching paths ( 12 ). 16. Actuating means ( 1 ) according to claim 15, characterized in that the contact force springs ( 13 ) are designed as cylindrical helical compression springs. 17. Actuating means ( 1 ) according to one of claims 1 to 16, characterized in that the guide grooves ( 4 ) have two merging guide areas ( 4 a, 4 b) with different gradients, the first when the switching paths ( 12 ) are closed Guide area ( 4 a) with the larger slope for moving the switching contacts ( 11 ) of the switching paths ( 12 ) from the open position into the contact-making position and then the second guide area ( 4 b) with the smaller slope for deflecting contact force springs ( 13 ) and for Contact force generation on the switching contacts ( 11 ) is passed through in the contact-contacting position. 18. Actuating means ( 1 ) according to claim 17, characterized in that the second guide area ( 4 b) merges into a third guide area ( 4 c) which runs almost transversely to the actuating movement ( 6 ) of the switching sections ( 12 ) and for fixing the Switch contacts ( 11 ) of the switching paths ( 12 ) in the contact force position is used. 19. Actuating means ( 1 ) according to claim 17 or 18, characterized in that a fourth guide area ( 4 d), which runs almost transversely to the actuating movement ( 6 ) of the switching paths ( 12 ) and for fixing the switching contacts ( 11 ) in the open Serves position, merges into the first guide area ( 4 a). 20. Electrical switchgear assembly for use in a switchgear assembly, with at least one circuit breaker whose switching paths ( 12 ) can be actuated by an actuating means ( 1 ) with an actuating element, characterized in that the actuating means ( 1 ) are designed according to one of the preceding claims. 21. Panel arrangement according to claim 20, characterized characterized in that the panel arrangement as one gas-insulated panel arrangement is formed.