CN106030900A - Connecting device for waveguides - Google Patents

Abstract

The invention relates to a connecting device (10) for waveguides, comprising a hollow body (12) which consists of electrical conductive materials; a plurality of receiving openings (20, 22) arranged on the hollow body (12) for receiving the waveguides (28, 30) to be connected and at least one vent (26) arranged on the hollow body (12) for dissipating the heat within the hollow body. According to the invention, the vent (26) of said connecting device (10) is designed as a mounting opening (26).

Description

Connectors for waveguides

The invention relates to a connection device for a waveguide.

Background technique

Waveguide is used in GIS (gas-insulated switchgear gas-insulated switchgear) - high voltage technology. Heat is generated in the waveguide due to the current flow. Heat build-up occurs particularly in vertical installations, since the convection that takes place in the module group and assists the dissipation of heat to the environment does not take place in the conductors. Heat can be conducted to adjoining components, such as contacts, which, for known reasons, does not have the desired effect. In order to improve the heat dissipation to the environment, in some areas "ventilation slots" are provided in the conductors.

For example, waveguides must be connected in order to construct a waveguide network. When connecting waveguides, the resistance along the entire circumference must be very low, because high currents will flow in the walls. In waveguides the connection is mostly screwed from the inside. A larger mounting opening is provided for this purpose. However this causes dielectric problems. To overcome this problem, it is customary to close the mounting opening with a cover.

Contents of the invention

The technical problem to be solved by the present invention is to provide a connection device for waveguides which enables both simple installation of the waveguide and optimized convection.

The above-mentioned technical problems are solved by the connecting device according to the invention, which is equipped with:

- a hollow body consisting of an electrically conductive material,

- a plurality of receiving openings arranged on the hollow body for receiving waveguides to be connected, and

- At least one ventilation opening arranged on the hollow body for dissipating heat in the hollow body.

For the connecting device, according to the present invention,

- The vents are constructed as mounting ports.

The connecting device according to the invention has a hollow body and a plurality of receiving openings arranged on the hollow body for receiving waveguides to be connected. The hollow body is formed from an electrically conductive material, for example from aluminum, iron, steel or another metal. In order to dissipate the heat in the hollow body, at least one ventilation opening is arranged on the hollow body.

The connection of the waveguide is usually internally screwed. A mounting port is required for this. According to the invention, the ventilation openings are also used as installation openings. Dielectric problems are avoided by an advantageous design of the spokes surrounding the mounting opening. For the present invention, no cover for the mounting port is required. Since the mounting opening also serves as a ventilation opening, it should not be covered. The combination of mounting openings and ventilation openings enables both simplified mounting of components (eg waveguides, contacts, etc.) on the hollow body and optimized gas convection between the inside and outside of the hollow body.

In order to optimize the heat convection, at least two ventilation openings can be arranged on the hollow body. If necessary, the hollow body can also have several ventilation openings. It should be emphasized here that the number of ports cannot be increased arbitrarily, because the resistance of the hollow body will increase due to too many ports. Care must therefore be taken when arranging and selecting the number of ventilation openings so as not to impede the electrical conductivity of the hollow body.

It is advantageous to have one vent serve as a mounting opening. But it is also possible to have multiple vents as mounting openings if desired.

When the waveguide is connected to the connecting device, the waveguide is fastened to the receiving opening of the hollow body by means of the connecting element. Here, the receiving opening is covered by the waveguide. The connection element therefore cannot directly access the connection point from the outside. The connecting element is accessible from the outside of the hollow body through the mounting opening. The connecting elements can be bolts.

A waveguide is a metallic tube with a round, elliptical or rectangular cross-section. In order to completely cover the receiving opening, the receiving opening can be formed such that its shape corresponds to the cross-section of the waveguide to be connected.

Furthermore, it is advantageous that the hollow body is produced in one piece. The hollow body can be cast in one piece, for example.

In order to realize branching at the waveguide connection, the hollow body can be substantially T-shaped.

Description of drawings

Further advantages and advantageous embodiments of the invention are illustrated by the drawings and explained in the following description. At this point, it should be noted that the drawings have only illustrative features and do not limit the invention in any way. In the attached picture,

Figure 1 shows a front view of a connecting device according to an embodiment of the invention;

Figure 2 shows a perspective view of the connecting device;

Figure 3 shows a perspective view of the assembly of the connection device and the waveguide;

Figure 4 shows a bottom view of the assembly of the connecting device and the waveguide;

Figure 5 shows a perspective view of the assembly of the connection device, waveguide and plug.

A connecting device according to an exemplary embodiment of the invention is shown in FIGS. 1 and 2 . As shown in FIG. 1 , the connecting device 10 has a T-shaped hollow body 12 . The hollow body 12 has an upper end side 14 , two lateral end sides 16 and a bottom side 18 . As shown in FIG. 2 , the hollow body 12 has an upper receiving hole 20 and two lateral receiving holes 22 , wherein the upper receiving hole 20 is arranged on the upper end side of the hollow body 14 and the lateral receiving holes are respectively arranged on both sides. On one of the end sides 16 . For this embodiment, the hollow body 12 has three ventilation openings. Elongate ventilation openings 24 are each arranged on the front side and the rear side of the hollow body 12 . Arranged on the underside of the hollow body 18 are openings 26 which serve both as ventilation openings and as mounting openings. How the installation takes place via the installation opening 26 and how the convection takes place via the ventilation openings 24 , 26 will be explained in more detail below with reference to FIGS. 3 and 4 .

Figure 3 shows the assembly of the connecting device and the waveguide. An upper waveguide 28 is arranged on the upper receiving opening 20 . The fastening of the upper waveguide 28 to the upper receiving opening 20 will be explained further with reference to FIG. 4 . Furthermore, as shown in FIG. 3 , a lateral waveguide 30 is arranged on each lateral receiving opening 22 . The waveguide 30 is positioned on the lateral receiving opening 22 with a plurality of connection elements 32 . In this embodiment, bolts 34 are used as connection elements 32 . However, other elements can also be used as connecting element 32 .

As shown in FIG. 3 , the waveguide 30 is bolted to the hollow body 12 from the inside. The screw 34 would therefore not be accessible from the outside of the hollow body 12 if the mounting opening 26 were not present. Mounting port 26 provides easy access to bolt 34 therethrough. In view of the dielectric problem, the installation opening 26 should not be too large. The mounting opening 26 is sized such that an installer can easily install the bolt 34 therethrough. However, the conduction capacity of the hollow body 12 should be affected as little as possible by the installation opening 26 . At the same time, the large opening 26 acts as a vent for extremely efficient convection. Furthermore, FIG. 3 shows an air flow 36 which passes through the ventilation and installation opening 26 and the elongated ventilation opening 24 . Heat transfer between the inside and outside of the hollow body 12 takes place by means of this air flow 36 .

Figure 4 shows a bottom view of the assembly of the connection device and the waveguide. As can be clearly seen from FIG. 4 , the installation opening 26 is also suitable for the installation of the upper waveguide 28 . Since the upper waveguide 28 is likewise screwed to the hollow body 12 from the inside, the installer must carry out the screwing through the installation opening 26 .

Figure 5 shows the assembly of connection device, waveguide and plug connector. In this exemplary embodiment, a plug connector 38 is arranged on one of the two lateral receiving openings 22 instead of the waveguide 30 .

List of reference signs

10 connection device

12 hollow body

14 Hollow body upper end side

16 Hollow body lateral end

18 Bottom side of hollow body

20 Upper receiving port

22 Lateral receiving port

24 long air vents

26 Ventilation and mounting openings

28 Upper waveguide

30 Lateral waveguide

32 Connecting elements

34 bolts

36 air flow

38 plug connector

Claims (8)

1. A connecting device for a waveguide, which has - a hollow body (12), which consists of an electrically conductive material, - a plurality of receiving openings (20, 22) arranged on the hollow body for receiving waveguides (28, 30) to be connected, - and at least one vent (26) arranged on said hollow body (12) for conducting away heat in the hollow body, It is characterized in that, - The ventilation opening (26) is configured as a mounting opening (26). 2. The connecting device according to claim 1, characterized in that at least two ventilation openings (24, 26) are arranged on the hollow body (12). 3. The connecting device according to claim 2, characterized in that at least one of the ventilation openings (24, 26) is designed as a mounting opening (26). 4. Connecting device according to one of claims 1 to 3, characterized in that the waveguide (28, 30) can be fastened to the hollow body (12) by means of a plurality of connecting elements (32), by A mounting opening (26) enables access to the connection element (32) from the outside of the hollow body (12). 5. The connecting device according to claim 4, characterized in that the connecting element (32) is designed as a screw (34). 6. Connecting device according to one of claims 1 to 5, characterized in that the shape of the receiving opening (20, 22) corresponds to the cross section of the waveguide (28, 30). 7. Connecting device according to one of claims 1 to 6, characterized in that the hollow body (12) is produced in one piece. 8. Connecting device according to one of claims 1 to 7, characterized in that the hollow body (12) is substantially T-shaped.