Non-rotationally symmetrical spark gap, in particular horn spark gap with deion chamber

Abstract

The invention relates to a non-rotationally symmetrical spark gap, in particular a horn spark gap with a deion chamber, a multi-part insulating material housing (1) as a support and receiving body for the horn electrodes and the deion chamber, means for conducting the gas flow related to the arc, wherein the insulating material housing (1) is divided on the plane defined by the horn electrodes and has two half shells, and plug or screw connections (4, 5) which lead out on the end face. According to the invention, with the exception of the sections of the plug or screw connections (4, 5) leading out, the insulating material housing is surrounded on all sides by a cooling surface (14) which is near the housing and lies against the housing surface, and the cooling surface (14) is at least partly supported on webs (8) which are designed to conduct the gas flow on the outer surface of the half shells.

Claims

1. A non-rotationally symmetrical horn spark gap with horn electrodes, a deion chamber and a multi-part insulating material housing as a support and receiving body (1) for the horn electrodes and the deion chamber (2), and means for conducting a gas flow related to an arc, wherein the insulating material housing is divided on a plane (3) defined by the horn electrodes and has two half shells, the half shells having an outer surface, and plug or screw connections (4; 5) which are lead out on an end face; characterized in that, with exception of sections of the plug or screw connections (4; 5) which are lead out, the insulating material housing is surrounded on all sides by a cooling surface (7; 14) formed as a sheathing which is near the housing and lies against the housing surface, wherein the cooling surface (7; 14) formed as a sheathing is at least partly supported on webs (8) present on the outer surface of the half shells which are designed to conduct the gas flow on the outer surface of the half shells.

2. The non-rotationally symmetrical horn spark gap according to claim 1, characterized in that the cooling surface (7;14) formed as a sheathing is jointly connected to the half shells.

3. The non-rotationally symmetrical horn spark gap according to claim 1, characterized in that the cooling surface (7;14) formed as a sheathing has beads or embossings (13; 23) for increasing stability.

4. The non-rotationally symmetrical horn spark gap according to claim 1, characterized in that the sheathing is composed of a material that is of good heat conduction.

5. The non-rotationally symmetrical horn spark gap according to claim 1, characterized in that, at a front-side end of the plug or screw connections (4; 5) which are lead out, a slip body (16) is slid upon the half shells, which overlays at least one fastening lug (15) at least in part, wherein the at least one fastening lug (15) is an integral part of the sheathing.

6. The non-rotationally symmetrical horn spark gap according to claim 5, characterized in that in a covering area of the slip body (16) overlaying the fastening lug, bores or recesses (20; 21) for force-fit connecting are provided in the support and receiving body (1).

7. The non-rotationally symmetrical horn spark gap according to claim 1, characterized in that in a realization of the sheathing (14) from an electrically conductive material, an insulating layer (22) is disposed between the outer surface of the half shells and the sheathing.

8. The non-rotationally symmetrical horn spark gap according to claim 1, characterized in that, for enlarging a heat-relevant surface area, outer sides of the sheathing have a structuring (23).

9. The non-rotationally symmetrical horn spark gap according to claim 5, characterized in that, for an easier overlaying of the fastening lugs (15), the slip body (16) has a wedge inclination (17).

10. The non-rotationally symmetrical horn spark gap according to claim 1, characterized in that the sheathing is realized as a hood that is slid on.

Description

(1) The invention will be explained below in more detail on the basis of an exemplary embodiment and referring to Figures.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS(S)

(2) FIG. 1 shows the non-rotationally symmetrical spark gap formed in accordance with a first embodiment of the invention with a cooling surface, formed as a sheathing, in the form of a hood that may be slid on prior to the step of sliding it onto the horn spark gap with a deion chamber;

(3) FIG. 2 shows the non-rotationally symmetrical spark gap formed in accordance with a first embodiment of the invention with a partially slid on hood;

(4) FIG. 3 shows the non-rotationally symmetrical spark gap formed in accordance with a first embodiment of the invention with the hood completely slid on prior to executing a riveting operation;

(5) FIG. 4 shows the non-rotationally symmetrical spark gap formed in accordance with a second exemplary embodiment of the invention with a metallic hood as a cooling surface as well as an intermediate insulation and a slip body in an exploded view prior to the mounting operation realized by sliding on;

(6) FIG. 5 shows the non-rotationally symmetrical spark gap formed in accordance with a second exemplary embodiment of the invention a representation similar to that according to FIG. 1, however, with an already partially slid on metallic hood; and

(7) FIG. 6 shows the non-rotationally symmetrical spark gap formed in accordance with a second exemplary embodiment of the invention, wherein, when the metallic hood is completely slid on, the slip body encompasses fastening lugs on the side of the hood, and is also in its end position, however, prior to the positive connection by, for example, riveting that still needs to be executed.

DETAILED DESCRIPTION OF THE INVENTION

(8) The non-rotationally symmetrical spark gap of the invention according to FIGS. 1 to 3 first takes a support and receiving body for horn electrodes occluded in the Figures and the partially visible deion chamber 2 as a basis. Furthermore, interspaces for conducting the gas flow related to the arc are visible. The insulating material housing, respectively the support and receiving body, is divided along line 3 in the plane defined by the horn electrodes, and thus results in two half shells.

(9) Plug or screw connections 4; 5 are leading out on the end face.

(10) Guiding grooves 6 provided on the lateral narrow sides serve to slide on the sheathing 7 formed as a cooling surface in a correct position, which sheathing has correspondingly complementary protrusions (not shown) in the interior.

(11) Furthermore, on the outer surfaces of the support and receiving bodies 1 formed as half shells, webs 8 serving to conduct the gas flow are present. In the shown example, the gas flow is here at least in part returned to the ignition area of the horn spark gap electrodes.

(12) The cooling surface 7 formed as a sheathing is realized in the form of a hood.

(13) With the exception of the sections of the plug or screw connection 4; 5 leading out, the support and receiving body 1 is correspondingly surrounded on all sides by a cooling surface which is near the housing and lies against the housing surface.

(14) The cooling surface, respectively the hood 7, partly supports in this case on the webs by its inner sides, which webs are formed to conduct the gas flow on the outer surface of the corresponding half shell.

(15) Due to this form of realization, the necessary mechanical stability is achieved, on the one hand. On the other hand, the gas flow remains unimpeded and may get into close contact with the cooling surface.

(16) The sheathing 7 or the corresponding hood may be connected jointly to the corresponding half shells. In this respect, passage openings 9 and 10 or 11 and 12 are present which receive screws or rivets.

(17) The cooling surface formed as a sheathing may have embossings 13 increasing stability.

(18) According to the embodiment as per FIGS. 4 to 6, a further development of the cooling surface formed as a sheathing is performed. In the example according to FIGS. 4 to 6, a metallic hood 14 is taken as a basis.

(19) On its front and rear side, this metallic hood 14 includes in each case a fastening lug 15.

(20) Furthermore, a slip body 16 is present.

(21) This slip body may be slid onto the support and receiving body in its end side lower area.

(22) It is apparent from the sequence of FIGS. 4 to 6 that the slip body 16 overlays and additionally secures the respective fastening lugs 15 of the hood with wedge inclinations 17 provided on the slip body. Bores or recesses 20; 21 now act as the positive connection of the parts mentioned before and the arrangement resulting therefrom.

(23) Also, in this exemplary embodiment, webs 8 are present, on which the cooling surface 14 formed as a sheathing may support without the gas flow being disturbed which develops after arc ignition.

(24) If, as shown in FIGS. 4 to 6, when the sheathing of a metallic material according to the hood 14 is formed, the material itself is electrically conductive, an insulation intermediate layer 22 which may be formed, for example, as a U-shaped pattern, will be disposed between the support and receiving body 1 and the hood 14.

(25) As already depicted, the outer sides of the sheathing, apart from an embossing increasing stability, may be structured for enlarging the heat-relevant surface area. Such a structure 23 is indicated in FIGS. 4 to 6.