Switching device with multiple encapsulation housings

Abstract

The invention relates to a switching device (1) having a plurality of encapsulation housings (3). Each encapsulation housing (3) is made of an electrically conductive material and the encapsulation housings (3) are connected to each other in pairs by means of an electrical connection (5) such that all encapsulation housings (3) are electrically connected by means of the connection (5). An electrical connection (5) of each two encapsulation housings (3) is established by projections (7) of the encapsulation housings (3) which are force-fitted and electrically connected to one another.

Description

Technical Field

[0001] The invention relates to a switchgear having a plurality of encapsulating housings. Background Art

[0002] In particular, the present invention relates to a gas-insulated switchgear having a plurality of encapsulating housings, each of which is designed to be gastight. The encapsulating housings of such a switchgear are usually designed to be electrically conductive and grounded, i.e. connected to a common reference potential. This is usually achieved in that the encapsulating housings are connected to each other via busbars, to which the reference potential is applied. Such busbars are usually made of copper. However, such busbars are costly, since copper is expensive and the busbars extend to all encapsulating housings connected thereto. Summary of the invention

[0003] The object of the present invention is to provide a switching device having a plurality of encapsulating housings which is improved with regard to the grounding complexity of the encapsulating housings.

[0004] According to the invention, the above-mentioned object is achieved by a switching device having the features according to the invention.

[0005] Advantageous embodiments of the invention are the subject matter of the present invention.

[0006] The switching device according to the invention has a plurality of encapsulating housings, wherein

[0007] - Each package housing is made of an electrically conductive material, and

[0008] The encapsulating housings are connected to one another in pairs via electrical connections, so that all encapsulating housings are electrically connected via the connections, wherein

[0009] The electrical connection of two encapsulating housings in each case is produced by projections of these encapsulating housings which are force-fitting and electrically connected to one another.

[0010] Therefore, according to the invention, the encapsulating housings of the switch device are electrically connected to each other in pairs in a force-fitting manner, so that all encapsulating housings are electrically connected. Therefore, busbars for electrically connecting the encapsulating housings to their grounding can be omitted. This saves the cost of busbars and reduces the assembly overhead for grounding the encapsulating housings. The electrical connection of every two encapsulating housings by means of protrusions of the encapsulating housings that are force-fitting and electrically connected to each other prevents interruptions in the electrical connection of the encapsulating housings, for example due to movements of the encapsulating housings relative to each other.

[0011] In one design of the present invention, the encapsulating housing and its protrusions are made of aluminum. In particular, this saves copper, which is usually used for busbars that ground the encapsulating housing. This will further reduce costs.

[0012] In another embodiment of the present invention, the protrusions of each two encapsulating housings connected to each other are connected to each other in a force-fitting manner by a threaded connection. For example, each protrusion has a groove for passing a screw of the threaded connection. By means of the threaded connection, the protrusions can be advantageously connected to each other in a simple, safe, economical and detachable manner.

[0013] In another embodiment of the present invention, each protrusion is designed in a web-shaped manner. Compared with a more geometrically complex protrusion design, the web-shaped design of the protrusion is both advantageous and economical.

[0014] In another embodiment of the present invention, each protrusion protrudes vertically from the housing wall of the encapsulating housing. This advantageously allows easy access to the protrusions, in particular for assembling a screw connection connecting two protrusions.

[0015] In another embodiment of the present invention, the connected protrusions are flatly abutted against each other, which can achieve good electrical connection of the protrusions.

[0016] In another design of the present invention, the encapsulation shells are arranged side by side in a row, and every two adjacent encapsulation shells are connected to each other by an electrical connection. Thus, the encapsulation shells are electrically connected to each other in series at the same time. For example, the protrusions of all encapsulation shells are designed to be straight and in the same direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above-mentioned characteristics, features and advantages of the present invention and their implementation methods will become clearer and easier to understand with reference to the following detailed description of the embodiments in conjunction with the accompanying drawings.

[0018] Figure 1 shows a side view of a switchgear having three encapsulating housings,

[0019] Figure 2 Shows Figure 1 Side view of the connection of two encapsulating housings of a switchgear device shown in,

[0020] Figure 3 Shows Figure 1 A perspective view of an encapsulating housing of a switching device is shown in FIG.

[0021] In the drawings, parts corresponding to each other have the same reference numerals. DETAILED DESCRIPTION

[0022] Figure 1 A side view of a gas insulated switchgear 1 with three encapsulating housings 3 is shown. The encapsulating housings 3 are arranged side by side in a row. Each encapsulating housing 3 is made of aluminum.

[0023] In each case two adjacent encapsulating housings 3 are connected to one another via an electrical connection 5, so that all encapsulating housings 3 are electrically connected via the connection 5. During operation of the switching device 1, the encapsulating housings 3 are connected to a common reference potential (ground potential).

[0024] Figure 2 Shows Figure 1 . The connection 5 is established by means of projections 7 of the two encapsulating housings 3 of the switchgear 1 which are force-fitted and electrically connected to each other. The force-fit connection of the projections 7 is established by means of a threaded connection 9. The threaded connection 9 comprises a screw 11 which is guided through recesses 13 in the projections 7 which correspond to each other. The screw head 15 of the screw 11 rests on the projection 7 of the connection 5. The screw end 16 of the screw 11 opposite the screw head 15 is fixed to the other projection 7 of the connection 5 by means of a screw nut 17 (e.g. a hexagonal nut), wherein a clamping disk or a washer 19 is arranged between the screw nut 17 and the projection 7.

[0025] Figure 3 A perspective view of the encapsulating housing 3 is shown. Each encapsulating housing 3 has two projections 7 which are each designed in the form of a web and protrude perpendicularly from a housing wall 21 of the encapsulating housing 3 on opposite sides of the encapsulating housing 3 .

[0026] For a better understanding, the figures show a Cartesian coordinate system with coordinates X, Y, and Z, respectively.

[0027] Although the present invention has been shown and described in more detail by way of preferred embodiments, the present invention is not limited to the disclosed examples and other variations may be derived therefrom by those skilled in the art without departing from the scope of protection of the present invention.

[0028] Regardless of the grammatical gender of a particular term, people with either masculine or feminine identities are included.

[0029] Reference numerals list

[0030] 1Switchgear

[0031] 3Package Shell

[0032] 5. Electrical Connection

[0033] 7 Protrusions

[0034] 9 Threaded connection

[0035] 11 Screws

[0036] 13 grooves

[0037] 15 Screw head

[0038] 16 Screw end

[0039] 17 Screws and nuts

[0040] 19 Clamping disc or washer

[0041] 21 Shell wall

[0042] X, Y, Z Cartesian coordinates

Claims

1. A switchgear (1) having a plurality of encapsulating housings (3), wherein - Each packaging shell (3) is made of an electrically conductive material, and The encapsulating housings (3) are connected to one another in pairs via electrical connections (5), so that all encapsulating housings (3) are electrically connected via the connections (5), wherein The electrical connection (5) of each of two encapsulating housings (3) is produced by projections (7) of the encapsulating housings (3) which are force-fitting and electrically connected to one another.

2. The switchgear (1) according to claim 1, wherein: The packaging shell (3) and its protrusion (7) are made of aluminum.

3. The switchgear (1) according to claim 1 or 2, wherein: The mutually connected projections (7) of each two encapsulating housings (3) are connected to each other in a force-fitting manner via a screw connection (9).

4. The switchgear (1) according to claim 3, wherein: Each protrusion (7) has a recess (13) for passing a screw (11) of a threaded connection (9).

5. The switchgear (1) according to any one of the preceding claims, wherein: Each protrusion (7) is designed in the shape of a web.

6. The switchgear (1) according to any one of the preceding claims, wherein: Each protrusion (7) protrudes vertically from a housing wall (21) of the encapsulating housing (3).

7. The switchgear (1) according to any one of the preceding claims, wherein: The projections (7) of the connection (5) bear against each other in a planar manner.

8. The switchgear (1) according to any one of the preceding claims, wherein: The encapsulating housings (3) are arranged side by side in a row, and every two adjacent encapsulating housings (3) are connected to each other via an electrical connection (5).

9. The switchgear (1) according to claim 8, wherein: The protrusions (7) of all the encapsulating housings (3) are designed to be straight and have the same direction.

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