Locking arrangement for a blast-resistant container

Abstract

The present invention relates to a blast-resistant container, and particularly to a locking arrangement arranged to provide a simplified connection for interlocking a first and a second vessel portion forming part of the container.

Claims

1. A blast-resistant container, comprising: a first open vessel portion having a first circular rim section having a first outer diameter; a second open vessel portion having a second circular rim section having a second outer diameter, and a locking arrangement comprising a ring shaped member having a circular inner circumference, the locking arrangement configured for interconnecting the first and the second open vessel portion, wherein an inner diameter of the ring shaped member is greater than the first and the second outer diameter of the first and the second open vessel portion, respectively, wherein: sets of first axially parallel connection members having a first length are arranged to an outside surface of the first circular rim section, the sets of first axially parallel connection members being spaced apart with a first distance in a circumferential direction; sets of second axially parallel connection members having a second length are arranged to an outside surface of the second circular rim section, the sets of second axially parallel connection members being spaced apart with a second distance in a circumferential direction; an inner surface of the ring shaped member comprises first and second axially separated locking sections; the first locking section comprises spaced apart sets of third axially parallel connection members matching the sets of first axially parallel connection members arranged at the outside surface of the first circular rim; and the second locking section comprises spaced apart sets of fourth axially parallel connection members matching the sets of second axially parallel connection members arranged at the outside surface of the second circular rim.

2. The blast-resistant container according to claim 1, wherein: the first distance is greater than the second distance, and the first length is greater than the second length.

3. The blast-resistant container according to claim 1, wherein the first outer diameter corresponds to the second outer diameter.

4. The blast-resistant container according to claim 2, wherein the first open vessel portion is locked to the second open vessel portion by rotating the locking arrangement a first predetermined amount in a first direction.

5. The blast-resistant container according to claim 4, wherein the first open vessel portion is locked to the locking arrangement and the second vessel portion is unlocked to the locking arrangement by rotating the locking arrangement a further second amount in the first direction.

6. The blast-resistant container according to claim 5, wherein the first open vessel portion is unlocked to the locking arrangement by rotating the locking arrangement a further third amount in the first direction.

7. The blast-resistant container according to claim 1, wherein a length of the sets of third axially parallel connection members arranged at the first locking section is less than the length of the sets of the first axially parallel connection members.

8. The blast-resistant container according to claim 1, wherein a length of the sets of fourth axially parallel connection members arranged at the second locking section is less than the length of the sets of the second axially parallel connection members.

9. The blast-resistant container according to claim 1, wherein the ring shaped member and the sets of third and fourth axially parallel connection members arranged at the inner surface of the ring shaped member are manufactured from a single piece of material.

10. The blast-resistant container according to claim 1, wherein: (i) the sets of third axially parallel connection members are affixed at the inner surface of the ring shaped member; and (ii) the sets of third axially parallel connection members and the ring shaped member are manufactured from different pieces of material.

11. The blast-resistant container according to claim 10, wherein each of the different pieces of material is a metal material.

12. The blast-resistant container according to claim 11, wherein the affixation of the sets of third axially parallel connection members to the inner surface of the ring shaped member is achieved by welding.

13. The blast-resistant container according to claim 1, wherein the first and the second open vessel portion is constructed from a sheet metal element having a thickness of at least 20 mm.

14. The blast-resistant container according to claim 1, wherein each of the first and the second open vessel portion has a curved inner surface.

15. The blast-resistant container according to claim 1, wherein the container is gas-tight.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The various aspects of the invention, including its particular features and advantages, will be readily understood from the following detailed description and the accompanying drawings, in which:

(2) FIG. 1 conceptually illustrates a perspective view of a blast-resistant container according to a currently preferred embodiment of the invention;

(3) FIG. 2A-2C shows detailed views of a locking arrangement provided in relation to the inventive container for arranging the blast-resistant container in a closed state; and

(4) FIG. 3A-3B shows detailed views of a locking arrangement provided in relation to the inventive container for arranging the blast-resistant container in an open state.

DETAILED DESCRIPTION

(5) The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which currently preferred embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness, and fully convey the scope of the invention to the skilled addressee. Like reference characters refer to like elements throughout.

(6) Referring now to the drawings, where FIGS. 1-3 in conjunction depict a conceptual illustration of a blast-resistant container 100 and the operation of such a blast-resistant container 100 in accordance to a currently preferred embodiment of the invention. The blast-resistant container 100 may be arranged onto e.g. a vessel (not shown), allowing the blast-resistant container 100 to be used for transportation of suspected detonation-dangerous material.

(7) In FIG. 1, the blast-resistant container 100 is illustrated to comprise a first 102 and a second 104 open vessel portion. The blast-resistant container 100 further comprises a locking arrangement 106 for interconnecting the first 102 to the second 104 open vessel portion.

(8) The first open vessel portion 102 in turn comprises a first circular rim section 108, and the second open vessel portion 104 comprises a corresponding second circular rim section 110. At an outside surface of the first circular rim section 108 there are arranged, preferably by welding or alternatively by a milling/machining process, sets of first axially parallel connection members 112 having a first length L1. In a corresponding manner, also at an outside surface of the second circular rim section 110 there are arranged, again preferably by welding or alternatively by a milling/machining process, sets of second axially parallel connection members 114 having a second length L2. In the illustrated embodiment, the first length L1 is essentially twice the second length L2. The connection members 112, 114 are curved to match an outside curvature of the essentially circular first 102 and second 104 open vessel portions.

(9) The sets of first axially parallel connection members 112 are spaced apart with a first distance D1, whereas the sets of second axially parallel connection members 114 are spaced apart with a second distance D2. The first length L1 is preferably at least slightly less than the first distance D1 and the second length L2 is preferably at least slightly less than the second distance D2 as will be further elaborated below.

(10) The locking arrangement 106 is formed from a ring shaped member 116 having an inner diameter being greater than the outer diameters of the first 102 and the second 104 vessel portions. An inside surface of the ring shape member 116 is defined to comprise a first 116 and a second 118 locking section. At the first locking section 116, there are arranged sets of axially parallel connection members 120 matching the sets of first axially parallel connection members 112 arranged at the outside surface of the first circular rim 108. In a corresponding manner, at the second locking section 118 there are arranged sets of axially parallel connection members 122 matching the sets of second axially parallel connection members 114 arranged at the outside surface of the second circular rim 110. In a corresponding manner as discussed above, the connection members 120 and 122 are adapted to have a curvature matching the curved inside surface of the ring shaped member 116 and may be welded to the ring shaped member 116.

(11) Furthermore, a length and a spacing/distance between the sets of connection members 120 and 122 is selected such that the locking arrangement 106 may be arranged onto the outside of the rim sections 108, 110, respectively, as will be further discussed below.

(12) In FIG. 2A, the blast-resisting container 100 is illustrated in an unlocked and separated state. It should be understood that the locking arrangement 106 is shown in cross section, with the ring shaped member 116 marked with dotted lines. The connection members 120, 122 will thus be arranged on an inside of the ring shaped member 116. Specifically, connection members at the locking arrangement 106, the first 102 and the second 104 vessel portions are shown to be aligned such that the locking arrangement 106 may be arranged onto the outside of the rim sections 108, 110, respectively. As is indicated, the connection members 122 may be inserted between (i.e. in the spaced between) the connection members 112.

(13) In FIG. 2B, possibly, once the connection members 122 have been inserted between the connection members 112, the connection members 114 are to be inserted between the connection members 124. At this stage, as is further shown in FIG. 2C, the locking arrangement 106 is rotated a first amount (degree) A1, whereby the connection members 112 will thread with the connection members 122, and the connection members 114 will thread with the connection members 124. In the illustration, the rotation the first amount A1 will make the connection members 112 to partly thread/align with the connection members 122 and connection members 114 will fully thread/align with the connection members 124. At this stage, as shown in FIG. 2C, the blast-resisting container 100 is illustrated in a locked and connected state.

(14) It will of course be needed to be able open up the blast-resisting container 100, for example for removing the suspected detonation-dangerous material. This is achieved by rotating the locking arrangement 106 a further second predetermined amount (degree) A2, as is shown in FIG. 3A. Specifically, at this point the connection members 112 will fully thread/align with the connection members 122 will align with the spaced between the connection members 114. Accordingly, and as is shown in FIG. 3B, the second vessel portion 104 may be separated from the locking arrangement 106. At this stage, as shown in FIG. 3B, the blast-resisting container 100 is illustrated in an unlocked state where the second vessel portion 106 is separated from the locking arrangement 106, at the same time as the locking arrangement is locked to the first vessel portion 102.

(15) By further rotating the locking arrangement a third amount (degree), it may be possible to also separate the locking arrangement 106 from the first vessel portion 102. It should be understood that it may be desirable to include e.g. groves, etc. with either of the rim sections 108, 110 or the locking arrangement 106 for allowing the installation of e.g. a high-pressure sealing hose for inert gas. Once inflated, the high-pressure sealing hose will adapt the blast-resistant container 100 to be gas tight.

(16) In summary, the present invention relates to a blast-resistant container, comprising a first open vessel portion having a first circular rim section having a first outer diameter, a second open vessel portion having a second circular rim section having a second outer diameter, and a locking arrangement comprising a ring shaped member having a circular inner circumference, the locking arrangement configured for interconnecting the first and the second open vessel portion, wherein an inner diameter of the ring shaped member is greater than the first and the second outer diameter of the first and the second open vessel portion, respectively, wherein sets of first axially parallel connection members having a first length are arranged to an outside surface of the first circular rim section, the sets of first axially parallel connection members being spaced apart with a first distance in a circumferential direction, sets of second axially parallel connection members having a second length are arranged to an outside surface of the second circular rim section, the sets of second axially parallel connection members being spaced apart with a second distance in a circumferential direction, an inner surface of the ring shaped member comprises first and second axially separated locking sections, the first locking section comprises spaced apart sets of axially parallel connection members matching the sets of first axially parallel connection members arranged at the outside surface of the first circular rim, and the second locking section comprises spaced apart sets of axially parallel connection members matching the sets of second axially parallel connection members arranged at the outside surface of the second circular rim.

(17) In accordance with the present invention, there is provided an explosion resistant container that may be manufactured at a lower cost as compared to prior-art arrangements, due to the novel approach of affixing connection members to the locking arrangement as well as the first and the second rim sections of the vessel portions.

(18) Although the figures may show a specific order of method steps, the order of the steps may differ from what is depicted. In addition, two or more steps may be performed concurrently or with partial concurrence. Such variation will depend on designer choice. All such variations are within the scope of the disclosure. Additionally, even though the invention has been described with reference to specific exemplifying embodiments thereof, many different alterations, modifications and the like will become apparent for those skilled in the art. Variations to the disclosed embodiments can be understood and effected by the skilled addressee in practicing the claimed invention, from a study of the drawings, the disclosure, and the appended claims. Furthermore, in the claims, the word comprising does not exclude other elements or steps, and the indefinite article a or an does not exclude a plurality.