WO2004109881A2

WO2004109881A2 - Communication system

Info

Publication number: WO2004109881A2
Application number: PCT/DE2004/000990
Authority: WO
Inventors: Manfred Meinherz
Original assignee: Siemens Aktiengesellschaft
Priority date: 2003-06-02
Filing date: 2004-04-30
Publication date: 2004-12-16
Also published as: DE10325684B4; DE10325684A1; WO2004109881A3

Abstract

The invention relates to a communication system (1,20) consisting of a protection housing (2, 2a) provided with a contact breaker unit (3) arranged therein. Said contact breaker unit (3) comprises two contact elements which are movable with respect to each other and oppositely arranged on an axis (4). When the inventive communication system (1, 20) is in the operating state thereof, the axis (4) takes a position different with respect to vertical and horizontal lines.

Description

description

switch arrangement

The invention relates to a switch arrangement with contact pieces lying opposite one another on an axis and movable along the axis relative to one another, which are surrounded by an encapsulation housing which extends essentially in a tubular manner along the axis.

Such a switch arrangement is evident, for example, from US Pat. No. 5,478,980. The switch arrangement there has a supporting frame for holding the switch arrangement. The support frame supports the encapsulation housing at its ends. The support frame is supported on several foundations.

For the installation of the switch arrangement, extensive earthworks must be carried out in advance to establish the foundations. Furthermore, a large area is required for the foundations.

The invention has for its object to provide a switch arrangement which reduces the effort for the erection of the foundations and reduces the area required for the foundations.

According to the invention, this is achieved in that, in the operating state of the switch arrangement, the axis has a position different from a vertical and a horizontal.

The inclined position of the encapsulation housing shifts the center of gravity of the arrangement so that the switch arrangement is supported on one of the ends of the encapsulation housing. it is sufficient. Additional supports are not necessary, since the shifting of the center of gravity avoids any wrenching forces. In a favorable embodiment, it can be provided that the axis is identical to the main axis of the encapsulation housing, in particular in the case of a rotationally symmetrical base body, a tube of round diameter in the encapsulation housing. However, the axes can be different from one another, so that they are only approximately parallel to one another.

An advantageous embodiment can further provide that an angle of approximately 45 degrees is formed between the horizontal and the axis.

This inclined position makes it possible to distribute the forces emanating from the switch arrangement evenly onto a support device. Furthermore, attachments can be distributed relatively evenly around the circumference of the encapsulation housing. Access to the enclosure is possible from all sides. Depending on the version, the deflection from the vertical can deviate from the 45 degrees by up to approx. +/- 20 degrees.

Furthermore, it can advantageously be provided that a first main current path is led from the substantially tubular encapsulation housing on the end face and a second main current path is guided from the essentially tubular encapsulation housing on the jacket side.

The main current paths of the switch arrangement are thus arranged at a predetermined angle. As a result, the switch arrangement can easily be integrated into an energy transmission system. Deflection elements, coupling pieces or the like are not necessary. An advantageous embodiment of the invention can further provide that a longitudinal axis of the first main current path and a longitudinal axis of the second main current path are arranged symmetrically to the vertical and are each directed upwards.

This arrangement means that the space underneath the switch arrangement is unobstructed and is freely accessible for operating and maintenance work. However, the space above the control aisles can be used to connect the switch to an overhead line, for example.

It can also be advantageously provided that the switch arrangement is held by a support frame which carries a drive device for moving one of the contact pieces.

A drive must be provided to move one of the contact pieces. The movement of the contact piece can occur suddenly with the release of large amounts of energy. The drive device is securely held on the support frame. The drive device can be fastened directly to the support frame or held indirectly by the support frame via the encapsulation housing. The position of the switch arrangement is stabilized by the low center of gravity of the switch drive.

It can also be advantageously provided that a drive element for moving one of the contact pieces reaches through the substantially tubular encapsulation housing on the casing side. The coupling-in coupling of a drive movement allows an end face of the encapsulation housing to be kept free. This gives additional access to the interior of the encapsulation housing. This is particularly beneficial for maintenance work. If necessary, the end face can be used to arrange additional devices such as overpressure protection devices, density sensors or the like.

If it is advantageously provided to integrate a bearing of a drive lever into a wall of the encapsulation housing, this bearing can already be inserted in the manufacturing process of the encapsulation housing. By mounting a drive lever in the bearing, which is integrated in a wall of the encapsulation housing, a rotary movement can be converted into a translatory movement in a simple manner.

Furthermore, it can advantageously be provided that the bearing supports a shaft which is arranged tangentially or parallel to a tangential to the essentially tubular surface of the encapsulation housing.

A shaft enables a drive movement to be carried out simply, even gas-tight, through a wall of the encapsulation housing. For mounting the shaft, for example, a molding can be provided on the encapsulation housing. The molding provides a corresponding range of motion for a drive lever. The tangential arrangement enables the drive movement to be easily transmitted to one of the contact pieces. Furthermore, it can advantageously be provided that at least one of the main current paths is led through a wall of the encapsulation housing by means of an outdoor bushing.

Outdoor bushings allow the encapsulation housing to be closed and the main current paths to be led through the encapsulation housing. The encapsulation housing is, for example, metallic and has a ground potential. There is a high voltage potential at the free ends of the outdoor bushings. In cooperation with the upstream main current paths, a sufficient gap between the free ends of the outdoor bushings themselves and the encapsulating housing and the base supporting the switch arrangement is established.

It can advantageously be provided that at least one of the outdoor bushings. Disconnector and / or an earthing switch is arranged.

The assignment of isolating switches and / or earthing switches results in a very compact switch arrangement, in particular in the case of an earthed encapsulation housing. When using outdoor bushings in which disconnectors or earthing switches are integrated, only a negligible increase in the construction volume can be observed. A variety of switching operations can be carried out with the switch arrangement. The switching arrangement can thus be used flexibly. A ground potential applied to the encapsulation housing can be used for grounding. It can also be provided to encompass the outdoor bushings or the corresponding connections on the encapsulation housing with current transformers. On the secondary side, their discharges can be grounded. It can also be advantageously provided that an interrupter unit receiving the contact pieces is held by insulators arranged transversely to the axis.

The insulators are preferably configured in columnar form as support insulators. The interrupter unit comprises the actual contact system, which is necessary to interrupt a current path and to see a switching arc. The arrangement transversely to the axis is, for example, an arrangement of the longitudinal axis of a columnar insulator, which is located radially to the axis or is tilted at an angle to a radial. This arrangement of the isolators allows a simplified assembly of the interrupter unit.

Exemplary embodiments of the invention are described below and shown schematically in figures.

The shows

Figure 1 is a partially cut first

Design variant of a switch arrangement,

Figure 2 is a partially cut second

Design variant of a switch arrangement and the

Figure 3 shows a detail of a switch arrangement.

FIG. 1 shows a switch arrangement 1 in a first embodiment variant. The switch arrangement 1 has an encapsulation housing 2. The encapsulation housing 2 is considerably tubular. The cross section of the encapsulation housing can be circular, oval, square, polygonal or in another suitable shape. The interior of the encapsulation housing 2 is filled with an insulating gas under increased pressure. An interrupter unit 3 is arranged in the interior of the encapsulation housing 2. In the present embodiment example, the switch arrangement 1 is encapsulated in one phase. That is, an encapsulation housing 2 is shown in FIG. 1, in the interior of which an interrupter unit for one phase is arranged. For example, three of the arrangements shown in FIG. 1 are required for switching a line in a three-phase energy transmission system. The interrupter unit 3 is held by insulators 5a, b. The insulators 5a, b are columnar. The longitudinal axes of the columnar insulators 5a, b are arranged radially to the axis 4. The position of the isolators on the interrupter unit 3 can be selected as required.

The interrupter unit 3 has two contact pieces which can be moved relative to one another. The contact pieces lie opposite one another on an axis 4. A first contact piece is fixed in place. A second contact piece can be moved along the axis 4. The interrupter unit 3 is fastened to the encapsulation housing 2 by means of insulators 5a, b.

A first connection flange 6 is arranged on a first end face of the encapsulation housing 2. A second connection flange 7 is arranged on a second end face. A third connection flange 8 is arranged on the casing side of the encapsulation housing 2.

The second connection flange 7 is closed with a blind cover 9. On the blind cover 9, an overpressure protection device 10 is arranged which, in the event of an increased pressure occurring in the interior of the encapsulation housing 2, allows the excess pressure to be reduced. A first outdoor bushing 11 is flanged to the first connection flange 6. A second outdoor bushing 12 is flanged to the third connection flange 8. A longitudinal axis of the first outdoor bushing 11 is approximately parallel to the axis 4. A longitudinal axis of the second outdoor bushing 12 is approximately perpendicular to the axis 4. A first main current path 11a is passed through a wall of the encapsulating housing 2 at the end using the first outdoor bushing 11. A second main current path 12a is led through a wall of the encapsulation housing 2 using the second outdoor bushing 12.

On the jacket side of the encapsulation housing 2 in the vicinity of the second end of the encapsulation housing 2, a shaft 13 extends through a conversion of the encapsulation housing 2. The shaft 13 is part of a kinematic chain which connects the second contact piece to a drive device 14. Via the shaft 13, a drive lever is mounted in a bearing integrated in the wall of the encapsulation housing 2. The shaft 13 is arranged tangentially to the curved surface of the encapsulation housing. The drive device 14 is held by a support frame 15. The drive device 15 can be attached directly to the support frame and / or to the encapsulation housing 2, which is also supported by the support frame 15.

The encapsulation housing 2 is fastened to the support frame 15 in such a way that the axis 4 is different from a horizontal and from a vertical. The free ends of the open air duct 11, 12 protrude from which the support frame 15 is held. tending foundation, so that both between the free ends of the outdoor bushings 11, 12 and to the bottom of a sufficient dielectric strength in atmospheric air is guaranteed. Due to the oblique arrangement of switch arrangement 1, the area required to carry the switch is small on the bottom. The support frame 15 can be designed so that it forms a cabinet. The drive device 14 and other auxiliary devices such as relays and control and monitoring devices can be arranged within this cabinet, protected from external influences.

FIG. 2 shows a second variant of a switch arrangement 20. This is a further development of the switch arrangement 1 known from FIG. 1. The devices of FIGS. 1 and 2 which act in the same way are provided with the same reference numerals.

The encapsulation housing 2a known from FIG. 1 is expanded by a fourth connecting flange 21 on the jacket side. A voltage converter 22 is flanged to the fourth connecting flange 21. The voltage converter 22 makes it possible to measure the voltage applied to the interrupter unit 3. The voltage converter 22 is located on a side of the casing of the encapsulation housing 2a opposite the third connection flange 8.

The outdoor bushings 11, 12 known from FIG. 1 are replaced in the embodiment variant shown in FIG. 2 by a first partition bushing 23 and by a second partition bushing 24. The isolating switch 23a located in the interior of the first isolating bushing 23 can be switched by means of a first isolating drive 25. At the A first earthing switch 26 is also arranged in the first isolating bushing 23, by means of which earthing of at least one of the contact pieces of the interrupter unit 3 and of the first main current path 11a of the switch arrangement 20 can take place.

The second isolating feedthrough 24 has a second isolating drive 27, with which the isolating switch 24a arranged in the second isolating feedthrough 24 can be driven. The second separating bushing 24 can alternatively or additionally be equipped with an earthing switch 32, as is known from the first separating bushing 23.

A disc insulator 28 is arranged between the first separation bushing 23 and the encapsulation housing 2a, which isolates the interior of the encapsulation housing 2a from the inside of the first separation bushing 23. Deviating from this, a conductor section of the second separating bushing 24 is held by a column insulator 29, so that the interior spaces of the encapsulation housing 2a and the second separating bushing 24 are connected to one another.

Current transformers 30, 31 are assigned to the first and second separation bushings 23, 24, respectively. A current flowing through the separation bushings 23, 24 can be measured using the current transformers 30, 31.

FIG. 3 shows a detail of the encapsulation housing 2 known from FIG. 1. The interrupter unit 3 is arranged in the interior of the encapsulation housing 2. The encapsulation housing 2 has a molding 40. The shaft 13 is supported in the molding 40. The axis of rotation of the shaft is tangential to the curved outer surface of the encapsulation housing 2. NEN inner and outer connected to the shaft 13

Levers 41, 42 can transmit a drive movement into the interior of the encapsulation housing 2. The inner lever 42 is coupled to an axially displaceable drive rod 43. With the drive rod 43, the movable contact piece is movable.

The coupling point of the inner lever 42 and the drive rod 43 is dielectrically shielded with a screen diaphragm 44. The screen diaphragm 44 is arranged essentially perpendicular to the axis of movement of the drive rod 43 and shields the coupling area against the interrupter unit 3 which is under electrical voltage. The screen 44 can be connected to the inner lever 42 or the drive rod 44.

Figures 1, 2 and 3 each show configurations in which an encapsulation housing is assigned to each phase. This means that a 3-phase system has three similar switch arrangements. However, it is also possible to provide an embodiment according to the invention for a multi-phase encapsulated switching arrangement. In this case, several interrupter units are to be arranged within one encapsulation housing.

Furthermore, several outdoor bushings are to be arranged in the area of the first and second outdoor bushings or the first and second partition bushings. These then each spread out fan-like away from the encapsulation housing. For this purpose, several corresponding flanges are to be arranged on the encapsulation housing or an intermediate module is to be arranged on a flange on the encapsulation housing, which divides the flange on the encapsulation housing into, for example, three flanges, to which the corresponding bushings can then be flanged.

Claims

claims

1. Switch arrangement (1, 20) with contact pieces opposite one another on an axis (4) and relatively movable along the axis (4), which are surrounded by an encapsulation housing (2, 2a) which is essentially tubular along the Axis (4) extends, characterized in that in the operating state of the switch arrangement (1, 20) the axis (4) has a different position from a vertical and a horizontal.

2. Switch arrangement (1, 20) according to claim 1, d a d u r c h g e k e n n z e i c h n e t, that a s s between the horizontal and the axis (4) an angle of about 45 degrees is formed.

3. Switch arrangement (1, 20) according to claim 1 or 2, characterized in that a first main current path (11a) on the end face from the substantially tubular encapsulation housing (2, 2a) and a second main current path (12a) on the α side of the substantially tubular encapsulation housing ( 1, 20) is performed.

4. Switch arrangement (1, 20) according to claim 3, characterized in that a longitudinal axis of the first main current path (11a) and a longitudinal axis of the second main current path (12a) are arranged symmetrically to the vertical and are each directed upwards.

5. Switch arrangement (1, 20) according to one of claims 1 to 4, d a d u r c h g e k e n n z e i c h n e t, that the switch arrangement (1, 20) is held by a support frame (15) which carries a drive device (14) for moving one of the contact pieces.

6. Switch arrangement (1, 20) according to one of claims 1 to 4, d a d u r c h g e k e n n z e i c h n e t, d a s s engages a drive element for moving one of the contact pieces on the shell side through the substantially tubular encapsulation housing (2, 2a).

7. Switch arrangement (1, 20) according to one of claims 1 to 6, d a d u r c h g e k e n n z e i c h n e t, that a bearing of a drive lever is integrated into a wall of the encapsulation housing (2, 2a).

8. Switch arrangement (1, 20) according to claim 7, d a d u r c h g e k e n n z e i c h n e t, that the bearing supports a shaft (13) which is arranged tangentially or parallel to a tangent to the substantially tubular surface of the encapsulation housing (2, 2a).

9. Switch arrangement (1, 20) according to one of claims 1 to 8, characterized in that at least one of the main current paths (11a, 12a) by means of an outdoor bushing (11, 12, 23, 24) Wall of the encapsulation housing (2, 2a) is guided,

10. Switch arrangement (20) according to one of claims 1 to 5, d a d u r c h g e k e n n z e i c h n e t, that a s s at least on one of the outdoor bushings (23, 24) a disconnector (23a, 24a) and / or an earthing switch (32) is arranged.

11. Switch arrangement (20) according to one of claims 1 to 10, d a d u r c h g e k e n n z e i c h n e t, d a s s the contact pieces receiving interrupter unit (3) of transversely to the axis (4) arranged insulators (5a, 5b) is held.