RECTANGULAR RUPTURE DISK

Abstract

A rectangular rupture disk comprising sheet metal includes an edge region with which the rupture disk is fastenable to an opening of a container or of a conduit. In the edge region, the rupture disk has a fold-over including a first folded over part of the sheet metal and a second part of the sheet metal to which the first folded over part is parallel or predominantly parallel. The rupture disk further includes a central region with which the opening is sealable until the container or conduit reaches a bursting pressure, and predetermined breaking lines along which the rupture disk ruptures to at least partially open the central region in response to the container or conduit reaching the bursting pressure.

Claims

1. A rectangular rupture disk, comprising: a sheet metal comprising: an edge region with which the rupture disk is fastenable to an opening of a container or of a conduit, the rupture disk comprising in the edge region a fold-over including a first folded over part of the sheet metal and a second part of the sheet metal to which the first folded over part is parallel or predominantly parallel; a central region with which the opening is sealable until the container or conduit reaches a bursting pressure; and predetermined breaking lines along which the rupture disk ruptures to at least partially open the central region in response to the container or conduit reaching the bursting pressure.

2. The rupture disk of claim 1, wherein the fold-over includes holes to receive screws to secure the rupture disk to an edge of the opening.

3. The rupture disk of claim 2, further comprising a first shoulder area located in the second part of the sheet metal.

4. The rupture disk of claim 3, wherein a space lies between the first folded over part and the second part in a region between an outer edge of the rupture disk and the first shoulder area, and the first folded over part and the second part lie against each other inboard of the first shoulder area.

5. The rupture disk of claim 3, further comprising a second shoulder area in the central region at a distance from the fold-over.

6. The rupture disk of claim 5, wherein the second shoulder area runs in a same direction as the first shoulder area.

7. The rupture disk of claim 5, wherein the second shoulder area runs in an opposite direction to the first shoulder area.

8. The rupture disk of claim 1, wherein a first shoulder area is located in the second part of the sheet metal.

9. The rupture disk of claim 8, wherein a space lies between the first folded over part and the second part in a region between an outer edge of the rupture disk and the first shoulder area, and the first folded over part and the second part lie against each other inboard of the first shoulder area.

10. The rupture disk of claim 8, further comprising a second shoulder area in the central region at a distance from the fold-over.

11. The rupture disk of claim 1, further comprising a shoulder area in the central region at a distance from the fold-over.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0014] An embodiment example of the disclosed rupture disk is described below with reference to the drawings.

[0015] FIG. 1 shows a perspective view of a rupture disk according to the disclosure.

[0016] FIG. 1a shows a top view of the outside of the rupture disk.

[0017] FIG. 2 shows a view of a cross-section through the rupture disk from the same perspective as in FIG. 1.

[0018] FIG. 3 shows an enlarged view of a section from FIG. 2.

[0019] FIG. 4 shows a section of a view of the same cross-section in a top view.

[0020] FIG. 4a shows a section from a view of a corresponding cross-section in a top view of a second rupture disk according to the disclosure.

[0021] FIG. 4b shows a section from a view of a corresponding cross-section in a top view of a third rupture disk according to the disclosure.

DETAILED DESCRIPTION

[0022] It is not necessary for a device according to the disclosure to comprise all the features described below. It is also possible for a device according to the disclosure to have only individual features of the embodiment example described below.

[0023] Referring to FIGS. 1, 1a, 2, 3, and 4, a rupture disk 1 is made from a sheet metal that has been cut to size in a special way. The sheet metal is notched at the corners. The sheet metal is provided with a first shoulder area 15 and a second shoulder area 16 by a setting tool. The first shoulder area 15 is introduced into the sheet metal in a more outwardly location and the second shoulder area 16 in a more inwardly location. In addition, pairs of holes 13 have been introduced in the sheet metal, wherein the holes 13 are the same size. The two holes 13 of a pair are equally spaced on a line perpendicular to a straight line along which the sheet is bent through 180 to create a fold-over in order to thus produce an edge region 11 of the sheet metal. After the folding over, the holes 13 of a pair are one on top of the other and align. Additional holes 14 are provided in the sheet metal at the corners. All these holes 13, 14 are used to attach the rupture disk 1, which rupture disk can be screwed to a container or a conduit using screws that can be passed through these holes 13, 14.

[0024] A middle region 12 of the rupture disk 1 is formed within the edge region 11, in which central region the second shoulder area 16 is provided. The first shoulder area is located in the edge region 11.

[0025] Two parts 111, 112 of the sheet metal are formed in the edge region 11 by the fold-over, namely a first folded over part 111 and a second part 112 parallel to the folded over part 111. The first shoulder area 15 is formed in the second part 112. As a result, there is a region in which the first part 111 and the second part 112 are at a distance from each other, and a region located further inwards in which the first part 111 and the second part 112 lie against each other. In this region, in which the first part 111 and the second part 112 lie against each other, predetermined breaking lines (not shown) are provided, along which the rupture disk 1 ruptures and opens when a bursting pressure is reached.

[0026] In practice, it may be that the first part 111 and the second part 112 lie next to each other in regions between the fold-over and the shoulder area 15. For this purpose, these regions can be curved towards each other, in particular where the holes 13 are provided, however also in a region adjacent to the fold. This curvature can already be produced during the manufacture of the rupture disk, for example during folding. However, it is also possible that the curvature is only created when the rupture disk is assembled, when screws guided through the holes 13 are tightened and the first part 111 and the second part 112 are thereby pressed against each other.

[0027] Both in the second rupture disk according to FIG. 4a and in the rupture disk according to FIG. 4b, which apart from the differences shown correspond to the rupture disk according to FIG. 1 through FIG. 4, the first part 111 and the second part 112 lie against each other. For this purpose, in the second rupture disk according to FIG. 4a and also in the third rupture disk according to FIG. 4b, a third shoulder area 17 is formed in the first part 111 of the edge region 11 by a setting tool, which third shoulder area nestles up against the first shoulder area 15. The first shoulder area 15 and the third shoulder area 17 can be produced in a single operation if the fold-over has been produced first.

[0028] In the case of the third rupture disk, a fourth shoulder area 18 is provided in the first region in addition to the first shoulder area 15, the second shoulder area 16, and the third shoulder area 17 in the second part 112 of the edge region 11, which fourth shoulder area is oriented in the opposite direction to the first shoulder area 15. This forms a circumferential depression in the second part 112 of the edge region 11.

[0029] In the three rupture disks 1 shown, a seal 2 can be arranged on the first shoulder area 15 adjacent to the second part 112 of the edge region 11, which seal, when the rupture disk 1 is mounted, rests against the edge of an opening to be closed and seals a gap between the rupture disk 1 and the edge of the opening. The first shoulder area 15 prevents this seal 2 from being compressed so much during assembly that it is damaged and then possibly no longer fulfills its scaling purpose. The seal 2 can be a sealing strip that is affixed to the second part 112. Alternatively, it can also be a foamed seal 2 that is molded on. In the case of the third rupture disk 1, the circumferential recess limits the location on both sides in which the seal 2 can be arranged.