DE102012003516A1 - Switching arrangement in gas-insulated or vacuum-insulated switchgear - Google Patents

Abstract

A switching arrangement for use in gas-insulated or vacuum-insulated switchgear systems, comprising a drive module (6) which closes or opens electrical contacts, and a base carrier module (1, 1 ') on which individual contact modules (2) are arranged, with regard to the task of To provide a compact electromechanical switching arrangement, which is easily scalable and configurable by as few different components as possible, that it is suitable for a variety of applications, characterized in that the individual contact modules (2) are identical.

Description

The invention relates to a switching arrangement in gas-insulated or vacuum-insulated switchgear according to the preamble of patent claim 1.

Typical electromechanical switching assemblies operate contact systems of electrical circuit breakers, circuit breakers, earthing switches, or combined disconnect and earthing switches in switchgear switchgear. These are used in particular in the medium voltage range and in the high voltage range.

At such switching arrangements high demands are made in particular in the aforementioned areas. They must be extremely reliable and have stability against shocks and overloads.

They must be stable in operation over a wide temperature range and ensure safe automatic and manual operation. The operating mode or switching state must be reliably displayed, and there must be short reaction or response times in both mechanical and electrical operation.

Typically, these requirements and operating conditions imply a complex set-up and high quality standard, which is associated with relatively high costs.

In particular, the complex structure is based on electromechanical subsystems. Once these subsystems are manufactured with cost minimization, compromises in quality and / or safety must be made.

However, essentially worldwide standards require a safe earthing functionality of a gas-insulated switchgear.

Currently, each gas-insulated switchgear must be adapted to different electrical contacts and safety specifications in order to ensure a safe grounding functionality.

Electrical contacts can move and respond at different speeds, which means that individual contact dynamics can occur in different applications. Furthermore, different contact systems may include different materials and contact designs.

Against this background, each actuation mechanism currently has to be optimized individually with regard to the respective application. Moreover, specific housings and constructions as well as specific system topologies and arrangements result in a large number of variants and different components of the supply chain of a switching device.

This involves relatively high costs and additional work steps. The complexity of maintenance work is correspondingly high.

The invention is therefore based on the object of specifying a compact electromechanical switching arrangement, which is easily scalable and configurable by as few different components as possible, so that it is suitable for a large number of applications in gas-insulated or vacuum-insulated switchgear.

According to the invention the above object is achieved by a switching arrangement with the features of claim 1.

Thereafter, the aforementioned switching arrangement is characterized in that the individual contact modules are identical and are arranged on a common base carrier module.

According to the invention, it has first been recognized that structurally identical individual contact modules allow a modular design of a switching arrangement. It has then been recognized that existing components with different circuit topologies can be used in a modular circuit arrangement. According to the invention, a switching arrangement can be adapted to the specific structure of circuit breakers, circuit breakers, earthing switches or combined disconnecting and grounding switches by means of already known modules. Here, high security requirements can be met using standard components. This is realized according to the invention by a scalable design of a switching arrangement which replaces a usually specifically prefabricated. The use of fewer components, and in particular of standard components, leads to a scalable structure that can be adapted individually to specific specifications. The switching arrangement according to the invention shows a particularly good power-to-cost ratio.

Advantageously, the individual contact modules are arranged such that they can be actuated by a single drive module. As a result, a significant design and labor costs and thus costs can be saved.

Further advantageously, the drive module is designed as a bistable electromechanical drive module. A bistable electromechanical drive module can be used to Mechanical system, in particular a mechanism with connectors and terminals to spend in a defined state or mode of operation. Such a mechanical system may be a single contact module, which is switchable between two predefined operating states or positions. Such a drive module has an electromechanical actuation and conversion unit which stores or releases energy depending on the position. As a result, a mechanical device can be reliably brought into two defined states or positions.

In this case, a bistable mechanism is advantageously used. It is characteristic of this mechanism that a force is gradually reduced in two or three steps, but at least in two steps. In addition, energy storage capability is used to safely realize a circuit through a relatively small actuator or even manually.

The described mechanism makes use of a set of reduction steps with a minimum of components. Therefore, a very compact drive module can be realized, which shows defined dynamic switching properties due to a low mechanical inertia.

The energy for the main actuation conversion of the electromechanical actuation and conversion unit can be provided in two ways. An electromagnetic or hydraulic rotary motor advantageously drives a spindle device. The other way advantageously provides a hand crank, with which a manual rotation can be performed.

Both ways of energy input can be advantageously interrupted so that only the other one can be put into effect. The hand crank can be decoupled by suitable interfaces temporarily from the spindle device or coupled to this. Remote installation of the drive module is also possible in a central control room.

A lock between a motorized and manual mode of operation is advantageously carried out by an electromechanical locking device, which is connected to a central control device. The central control device serves the status information and / or the remote control of a drive unit or of the drive module.

The drive module advantageously has a spring for energy storage. A spring has a long life and can be easily maintained and replaced if necessary. A spring and its associated spindle device can be installed separately and easily replaced.

According to an advantageous embodiment of the invention, a common drive module is used for a variety of applications, which unfolds in these the required working speeds, working distances and forces. The drive module design and performance are adjusted to the highest levels of safety in terms of travel distances and operating speeds.

According to a further advantageous embodiment of the invention, a common drive module is used for a variety of applications, however, the dynamics of the working speeds, working distances, torques and forces is adapted to the respective applications. Moreover, the same components are used for the contact system, however, the contact material may be customized and safety specific.

Further advantageously, the drive module is connected via connection components with the individual contact modules, wherein the connection components can be used interchangeably in several of the individual contact modules. As a result, one and the same type of connection component can be combined with a plurality of individual contact modules.

Further advantageously, the drive module is directly connected by a aktuatorische connection component with a single contact module, wherein the aktuatorische connection component is interchangeable used in several of the individual contact modules. The actuator connection component allows the direct actuation of a single contact module by the drive module, wherein the other individual contact modules are actuated indirectly by further connection components.

In a further advantageous embodiment of the invention, the drive module is directly connected by a rod-like connection component with a plurality of individual contact modules, wherein the rod-like connection component is interchangeable in a plurality of the individual contact modules. As a result, a linear arrangement of several individual contact modules is possible. The rod-like connection component can pass through a plurality of individual contact modules.

Furthermore, advantageously, a mechanical or hydraulic connection of the drive module to a single contact module can take place via the connection components. In an advantageous embodiment, waves with low inertia (Hollow shafts) or operation with push-pull input and single-ended output preferred. The type and size of the connection components can be selected according to the respective application.

Advantageously, an integrated, central damping device is provided for the entire switching arrangement. This can replace decentralized damping modules and internal damping devices of contact modules, which are arranged within an insulating gas area, with lower requirements on the dynamic movement behavior. This leads to better and more stable dielectric properties. A typical source of contamination by damper abrasion can thus be countered.

For higher demands on the dynamic movement behavior, the central damping device can support decentralized damping modules by reducing their individual stresses.

Advantageously, a single contact module has a housing open on both sides, which accommodates a movement contact carrier, wherein the housing and the movement contact carrier of the individual contact modules used are identical in construction. As a result, different connection components can pass through the housing from two sides. Depending on the required topology of the switching arrangement, a kind of blind flange or a type of rotary feedthrough can be arranged on an opening of a housing.

In that regard, the same components are used for the contact system. The identical housing and moving contact carrier lead to the same work paths and working speeds, however, the contact material can be customized topologie- and security specification specific.

Only the distances and geometric arrangements of individual electrical contacts must be set application-specific, which can lead to different variants of base carrier modules and connection paths of the individual contact modules to the drive module.

A single contact module advantageously consists of a housing, a moving contact carrier and a moving contact. In addition, a single contact module advantageously comprises an interface of a motion converter.

The housing is cast advantageous. The housing advantageously comprises special devices for integrating a motion converter, which converts an input movement into a movement for producing a contact connection or contact separation of the switching device. The devices advantageously comprise in particular support and bearing elements for producing a low friction.

The movement contact carrier advantageously has an integrated damping module which carries the movable part of a contact pair, in particular a contact tulip or a connecting pin. The movement contact carrier advantageously has an interface to the motion converter. The motion converter advantageously has an integrated damping device.

The movement contact advantageously comprises a contact pair, which can be joined together. The contact pair includes a contact tulip and a pin. Contacts are carried by the moving contact carrier.

The interface to the motion converter advantageously comprises a mechanism or a connection which tunes the dynamics of an input movement to the dynamics of a translational movement for establishing a contact connection or contact separation.

Advantageously, the input movement of a rotary nature. This is an efficient gas seal possible. The required movement for producing a contact connection or contact separation is advantageous translational nature.

The tuning of a single contact module to the respective contact tulip is possible independently of the other contacts. As a result, an improved tuning is possible with a reduction of the friction.

Advantageously, an additional linear guide for each contact is integrated into the single contact module. As a result, an angular deflection or a side deflection of the contacts, whereby an increased friction, during operation are avoided.

A fixed mating contact module advantageously has a topology which corresponds to the individual contact module. Advantageously, the mating contact module is connected to a base carrier module via an insulating support block. Further advantageously, the mating contact module is connected to the grounded main housing of a switchgear over at least one insulating part. Advantageously, a mechanical geometric overlap is provided for the movement contact of the individual contact module. Advantageously, an electrical or mechanical connection is formed between the mating contact module and the movement contact of the individual contact module.

According to a further advantageous embodiment of the invention, the individual contact modules are arranged on a base support module with circular recesses. The circular recesses form mechanical interfaces for the arrangement of the individual contact modules. The pattern and size of these interfaces can be chosen according to the application.

The base support module has a support body. This advantageously comprises mechanical interfaces to individual contact modules and a main unit, for example to the main housing of a switchgear. Advantageously, the base support module is designed gas-tight relative to the main housing and relative to the single contact module. Further advantageously, the mechanical interfaces correspond to triangular or linear arrangements. Advantageously, the distance between individual interfaces for individual contact modules corresponds to specifications resulting from the electrical requirements.

Further advantageously, a dynamic sealing module is provided which has a rotary seal. A dynamic sealing module can be inserted into an opening of a housing of a single contact module and thereby penetrated by a connection component. The rotary seal causes a gas-tight closure of the opening of the housing.

Further advantageously, a static sealing module is provided which has a closure cap. A static sealing module can be inserted into an opening of a housing of a single contact module and close this as a kind blind flange. Advantageously, static sealing modules include gas tight covers with seals to housings of single contact modules.

Sealing surfaces and mechanical interfaces, for example a threaded flange, are advantageously provided for connection sleeves between two individual contact modules.

Dynamic seal modules advantageously include gas-tight covers with seals to housings of single contact modules. Further advantageous gas-tight rotary joints between an interface of a motion converter of a single contact module and connection components are provided.

Connection components advantageously connect individual contact modules and bistable electromechanical drive modules with each other. Advantageously, a transmission of forces and / or torques takes place with a defined translatory play or a rotational play. Further advantageously, a simple shaft-lever-fork joint connection is provided. The levers are positively, positively or materially connected to a shaft of the interface of the motion converter of the single contact module.

Self-tuning ball joint connections are advantageously provided. Further advantageous train-train double lever connections are provided with a compact design. By robust sliding bearings, such as sockets, a maintenance freedom is achieved advantageously. Advantageously, lightweight compounds made of composite materials are used as levers and connections.

In the drawings show

1 three switching arrangements, which can be constructed from a set of standard modules,

2 an exploded view of a first switching arrangement, wherein a base support module is used, which allows a triangular arrangement of single contact modules,

3 an exploded view of a second switching arrangement, wherein a base support module is used, which allows a linear arrangement of single contact modules,

4 an exploded view of another switching arrangement, wherein a base support module is used, which allows a linear arrangement of single contact modules, and

5 an exploded view of another switching arrangement, wherein a base support module is used, which allows a linear arrangement of single contact modules,

1 shows constructed from the standard modules switching arrangements that meet different requirements. Three such switching arrangements are in the 1 shown. From standard modules constructed switching arrangements are in the 2 to 5 shown in detail.

2 shows a base carrier module 1 for receiving individual contact modules 2 , A single contact module 2 consists of a housing 3 and a motion contact carrier 4 , The base carrier module 1 has circular recesses 5 whose centers form an equilateral triangle.

2 further shows a bistable electromechanical drive module 6 , which has an actuator connection component 7 ' and two other connection components 7 with the single contact modules 2 can be connected. Furthermore, at the connection components 7 . 7 ' dynamic sealing modules 8th and static sealing modules 9 arranged.

2 shows a switching arrangement, which is a drive module 6 includes, which closes or opens electrical contacts, and a base support module 1 on which single contact modules 2 are arranged. The single contact modules 2 are identical. The single contact modules 2 are arranged such that these by a single drive module 6 are operable.

The drive module 6 is designed as a bistable electromechanical drive module. The drive module 6 is about connection components 7 with the single contact modules 2 connected, wherein the connection components 7 in several of the individual contact modules 2 are used interchangeably.

The drive module 6 is directly by an actuator connection component 7 ' with a single contact module 2 connected, wherein the actuator connection component 7 ' in several of the individual contact modules 2 can be used interchangeably.

3 shows a base carrier module 1' for receiving individual contact modules 2 , A single contact module 2 consists of a housing 3 and a motion contact carrier 4 , The base carrier module 1' has circular recesses 5 ' whose centers lie on a straight line.

3 further shows a bistable electromechanical drive module 6 , which has a rod-like connection component 10 with the single contact modules 2 can be connected.

The drive module 6 is directly by a rod-like connection component 10 with several individual contact modules 2 connected, wherein the rod-like connection component 10 in several of the individual contact modules 2 can be used interchangeably.

They are preferably five dynamic sealing modules 8th provided, which act as bearing flanges.

4 shows a base carrier module 1' for receiving individual contact modules 2 , A single contact module 2 consists of a housing 3 and a motion contact carrier 4 , The base carrier module 1' has circular recesses 5 ' whose centers lie on a straight line.

4 further shows a bistable electromechanical drive module 6 , which has a rod-like connection component 10 with the single contact modules 2 can be connected. There are two bearing elements or connectors 11 provided, which the rod-like connection component 10 be upheld.

The bearing elements 11 consist of two static sealing modules 8th and connect two individual contact modules gas-tight.

5 shows a further switching arrangement in which the individual contact modules 2 are arranged linearly. Here are three connection components 7 used as adjusting rods or push-pull converters. The longitudinal axes of the connection components 7 are arranged parallel to each other and next to each other.

In the 1 to 5 has a single contact module 2 a housing open on both sides 3 on which a motion contact wearer 4 takes up, the housing 3 and the motion contact bearers 4 the single contact modules used 2 are identical.

The single contact modules 2 are on a base carrier module 1 respectively. 1' with circular recesses 5 respectively. 5 ' arranged.

One type of bistable electromechanical drive module 6 , the two types of base carrier modules 1 . 1' and the type of single contact module 2 can be used in all currently known switching arrangements. There are various structural structures with the same components possible. Assembly and maintenance are simplified.

LIST OF REFERENCE NUMBERS

1, 1 '

Base support module

2

Single contact module

3

casing

4

Moving contact carrier

5, 5 '

circular recesses

6

drive module

7

connection component

7 '

actuatoric connection component

8th

dynamic sealing module

9

static sealing module

10

rod-like connection component

11

Bearing element, connection piece

Claims (11)

Switching arrangement for use in gas-insulated or vacuum-insulated switchgear, comprising a drive module ( 6 ), which closes or opens electrical contacts, characterized in that the individual contact modules ( 2 ) are identical and on a common base support module ( 1 . 1' ) are arranged. Switching arrangement according to Claim 1, characterized in that the individual contact modules ( 2 ) are arranged such that these by a single drive module ( 6 ) are operable. Switching arrangement according to Claim 1 or 2, characterized in that the drive module ( 6 ) is designed as a bistable electromechanical drive module. Switching arrangement according to one of the preceding claims, characterized in that the drive module ( 6 ) via connection components ( 7 ) with the individual contact modules ( 2 ), the connection components ( 7 ) into several of the individual contact modules ( 2 ) are used interchangeably. Switching arrangement according to one of the preceding claims, characterized in that the drive module ( 6 ) directly by an actuatory connection component ( 7 ' ) with a single contact module ( 2 ), wherein the actuator connection component ( 7 ' ) into several of the individual contact modules ( 2 ) can be used interchangeably. Switching arrangement according to one of claims 1 to 3, characterized in that the drive module ( 6 ) directly by a rod-like connection component ( 10 ) with several individual contact modules ( 2 ), wherein the rod-like connection component ( 10 ) into several of the individual contact modules ( 2 ) can be used interchangeably. Switching arrangement according to one of the preceding claims, characterized in that a single contact module ( 2 ) a housing open on both sides ( 3 ), which has a movement contact carrier ( 4 ), the housings ( 3 ) and the motion contact carriers ( 4 ) of the individual contact modules used ( 2 ) are identical. Switching arrangement according to one of the preceding claims, characterized in that the individual contact modules ( 2 ) on a base support module ( 1 . 1' ) with circular recesses ( 5 . 5 ' ) are arranged. Switching arrangement according to one of the preceding claims, characterized in that a dynamic sealing module ( 8th ) is provided, which has a rotary seal. Switching arrangement according to one of the preceding claims, characterized in that a bearing element ( 11 ) has static seals and two individual contact modules ( 2 ) connects. Switching arrangement according to one of the preceding claims, characterized in that a static sealing module ( 9 ) is provided which has a closure cap.

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