DE29805945U1 - Encapsulation module for a gas-insulated high-voltage system - Google Patents

Description

Encapsulation module for a gas-insulated high-voltage system

The invention is in the field of energy distribution and is to be used in the structural design of an encapsulation module of a gas-insulated high-voltage system, which serves to transition from a three-phase encapsulated arrangement of the phase conductors to a single-phase encapsulated arrangement.

Known encapsulation modules suitable for the above-mentioned application area consist of an encapsulation housing, a disc insulator fixed to the encapsulation housing and three phase conductor pieces supported by the disc insulator. These modules are arranged at the end of busbars and are used to connect open-air bushings for the transition from the encapsulated high-voltage system to overhead lines or to the bare connection of transformers. In these encapsulation modules, the encapsulation housing is designed as a hemispherical with a short cylindrical nozzle with a connection flange, with three short tubular housing areas with connection flanges branching off radially from the hemispherical casing area. The phase conductor pieces, which are fixed at one end to the disc insulator, each protrude into a cylindrical nozzle with their other end (brochure "SF ₆ gas-insulated switchgear type ELK-O", BBC, No. D SI 80097D, 1978).

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Based on this known encapsulation module, which has the features of the generic term of claim 1, the invention is based on the object of designing the encapsulation module in such a way that it can be inserted at any point in a high-voltage switchgear.

GR 98 G 4055 DE

To achieve this object, the invention provides that the cylindrical housing region is provided with a further connecting flange, which is arranged axially symmetrically to the other connecting flange, and that the axes of the three tubular housing regions are arranged in a plane running vertically to the axis of the cylindrical housing region, with the connecting surfaces of the tubular housing regions jointly lying in a plane running parallel to the axis of the cylindrical housing region.

An encapsulation module designed in this way can be installed at any point in a high-voltage switchgear, for example in the connection area of a switchgear panel, in the course of a busbar between two switchgear panels or at the end of the busbar, and enables a right-angled branch for the individual phase conductors, whereby the encapsulation tubes of the individual branched phase conductors basically run parallel to one another in one plane. When connecting outdoor bushings to the new encapsulation module, the spreading can be carried out using angle pieces to maintain the required outdoor distances.

With regard to high-voltage technical boundary conditions, it may be useful to connect the three tubular housing areas with the cylindrical housing area via a housing area common to the three phase conductor sections that widens like a funnel towards the tubular housing areas.

It is also expedient if the phase conductor sections are divided at the transition from the cylindrical housing area to the tubular housing areas or to the funnel-shaped widening housing area by means of detachable connections, whereby the detachable connections are arranged on an axis that is parallel to the common connection plane of the

GR 98 G 4055 DE I.,* ' I :..

Connection flanges of the tubular housing areas and vertical to the axis of the cylindrical housing area. Such a division of the phase conductor pieces facilitates their assembly and enables the encapsulation housing to be used for two positions offset by 180° in the circumferential direction. This division also enables the encapsulation module to be used as a branch module by connecting further phase conductor pieces to the division points of the phase conductors, which are designed as a detachable connection, which lead to the connection level of the further connection flange of the cylindrical housing area.

. Two examples of the new encapsulation module are

shown in Figures 1 to 3.
15

Show

Figures 1 and 2 show a branch module in the cross and

Longitudinal section and

Figure 3 shows a bending module in the longitudinal

cut.

According to Figures 1 and 2, the new encapsulation module consists of an encapsulation housing 1, which has a cylindrical area 10 with the two connection flanges 11 and 12 and three tubular areas 13, 14 and 15, each with a connection flange 16. The tubular housing areas 13, 14 and 15 are connected to the cylindrical housing area 10 via a common funnel-like housing area 17. The cylindrical housing area 10 has an axis A, while the connection flanges 16 of the tubular housing areas 13, 14 and 15 are assigned the axes a, b and c. These axes lie in a plane that is arranged vertically to the axis A of the cylindrical housing area 10, expediently in the middle of this cylindrical housing area.

GR 98 G 4055 DE

• · · &igr;

·

A disc insulator 2 is connected to the connection flange 12, which has connections 21 for connecting phase conductor pieces 4, 5 and 6. Disc insulators 3 are connected to the connection flanges 16, which have connections 31 for phase conductor pieces 4, 5 and 6 to be connected. Each phase conductor piece 4, 5, 6 consists of a first section 41, which is assigned to the cylindrical housing area 10, and a second section 42, which branches off from section 41 and is assigned to a tubular housing area 13, 14 or 15.

The sections 41 and 42 are connected to one another at a separation point 45, the separation points of the three phase conductor sections being arranged along an axis D which runs parallel to the common connection plane of the connection flanges 16 and vertically to the axis A of the cylindrical housing area 10.

In the area of the separation points 45, the sections 41 and 42 are detachably connected by means of a screw connection. Additional phase conductor sections 43 are integrated into these detachable connections, which are further connected at their other end in the area of the connection flange 12.

The encapsulation module according to Figure 3 is designed as an angled module. The screw connection between the phase conductor sections 41 and 42 is optimized with a field electrode 44 and the connection flange 11 is closed with a cover 18.

Claims (4)

GR 98 G 4055 DE I..* I.. Protection claims 1. Encapsulation module for a gas-insulated high-voltage system for the transition from a three-phase encapsulated arrangement of the phase conductors to a single-phase encapsulated arrangement, consisting of - an encapsulation housing with a cylindrical housing area having a connection flange and three tubular housing areas connected to the cylindrical housing area and merging into connection flanges, - a disc insulator connected to the connection flange of the cylindrical housing area with connections for the phase conductors and - three phase conductor pieces, which are connected at one end to the connections and at the other end each protrude into a tubular housing area, characterized in that the cylindrical housing area (10) is provided with a further connection flange (11) which is arranged axially symmetrically to the other connection flange (12), that the axes (a, b, c) of the three tubular housing areas (13, 14, 15) are arranged in a plane running vertically to the axis (A) of the cylindrical housing area (10), wherein the connecting surfaces (16) of the tubular housing regions lie together in a plane running parallel to the axis of the cylindrical housing region. 2. Encapsulation module according to claim 1, characterized in that the three tubular housing areas (13,14,15) are connected to the cylindrical housing area (10) via a common conductor section (4,5,6) extending to the tubular GR 98 G 4055 DE Housing areas are connected to a funnel-like widening housing area (17). 3. Encapsulation module according to claim 1 or 2, characterized in - that the phase conductor pieces are divided at the transition from the cylindrical housing area to the tubular housing areas or to the funnel-like widening housing area by means of detachable connections, the detachable connections (45) being arranged along an axis (D) which runs parallel to the common connection plane of the connection flanges (16) of the tubular housing areas (13,14,15) and vertically to the axis (A) of the cylindrical housing area (10).
15 4. Encapsulation module according to claim 3, characterized in that further phase conductor sections (43) are connected to the division points (45) of the phase conductor sections designed as a detachable connection, which lead to the connection level of the further connection flange (11) of the cylindrical housing area (10).