Patent Application
20150291351
This relates to a tank and a double-walled tank and a method of manufacturing the tanks.
Tanks, such as double-walled tanks, are often used to transport or store fluent materials, such as liquids, powders, pellets and the like. Double-walled tanks provide secondary containment against any leaks and also provide additional structural support to the tank. U.S. Pat. No. 7,337,908 (Dedmon) entitled “Container for Bulk Handling of Fluids,” is an example of a double-walled tank that has structural supports on an outer wall.
There is provided a method of manufacturing a double-walled tank. An outer shell, the outer shell having a base and corrugated side walls structurally mounted to the base, the corrugated side walls and the base defining an inner tank receptacle accessible through an upper opening that is vertically opposite the base, the corrugations of the corrugated side walls have a trough and a crest, the trough being spaced within the inner tank receptacle relative to the crest. A plurality of rigid or semi-rigid panels attached together to form an inner tank having a bottom wall and inner side walls. An inner tank inserted into the inner tank receptacle such that the bottom wall rests on the base of the outer shell and the side walls engage the troughs of the corrugations, the inner tank being formed separately and distinctly from the outer shell prior to being inserted into the receptacle.
In another aspect, a roof plate may be installed above the inner tank.
In another aspect, the roof plate may be attached to the inner tank and extend past the outer perimeter of the corrugated side walls.
In another aspect, the roof plate may be attached to the corrugated side walls after the inner tank is inserted into the outer tank.
In another aspect, the roof plate may comprise elongated structural reinforcement members.
In another aspect, the outer shell may comprise an outer wall.
In another aspect, the base of the outer shell may be a skid.
In another aspect, the inner tank may be formed without structural reinforcement members.
In another aspect, the rigid or semi-rigid panels may be sufficiently rigid to withstand conforming to the corrugations of the corrugated side walls.
In another aspect, the inner tank may be supported with a support structure prior to inserting the inner tank into the inner tank receptacle of the outer tank.
There is provided a double walled tank with an inner tank having a plurality of rigid or semi-rigid panels that are attached directly to adjacent panels to form a bottom wall and inner side walls of the inner tank. An outer shell having a base and corrugated side walls structurally mounted directly to the base, the corrugated side walls and the base defining an inner tank receptacle accessible through an upper opening that is vertically opposite the base, the corrugations of the corrugated side walls have a trough and a crest, the trough being spaced within the inner tank receptacle relative to the crest, the inner tank being positioned within the inner tank receptacle such that the inner tank engages the troughs of the corrugated side walls and such that the bottom wall rests on the base of the outer shell, the inner tank being formed separately and distinctly from the outer shell and the outer shell being formed separately and distinctly from the inner tank.
In another aspect, the double walled tank may further comprise a roof plate above the inner tank.
In another aspect, the roof plate may be attached to the inner tank and extend past the outer perimeter of the corrugated sidewalls.
In another aspect, the roof plate may be attached to the corrugated side walls.
In another aspect, the roof plate may comprise elongated structural reinforcement members.
In another aspect, the outer shell may comprise an outer wall.
In another aspect, the base of the outer shell may be a skid.
In another aspect, the inner tank may be formed without structural reinforcement members.
In another aspect, the rigid or semi-rigid panels are sufficiently rigid to withstand conforming to the corrugations of the corrugated side walls.
There is provided a corrugated tank with a base, corrugated side walls structurally mounted directly to the base, the corrugated side walls and the base defining a tank interior, the corrugated side walls having a trough and a crest, the trough being spaced within the inner tank receptacle relative to the crest and a roof plate above the tank interior, the roof plate structurally mounted to the corrugated side walls opposite the base.
In another aspect, the roof plate may comprise have structural reinforcement members.
In another aspect, the base may be a skid.
These and other features will become more apparent from the following description in which reference is made to the appended drawings, the drawings are for the purpose of illustration only and are not intended to be in any way limiting, wherein:
A double-walled tank generally identified by reference numeral 10, will now be described with reference to
The tank described herein may have two tanks, an outer shell 12 and an inner tank 26, to be used in combination. However, depending on the needs of the use, outer shell 12 may also serve as a tank without the need for inner tank 26. The embodiment described below is that of the two tank system providing a double walled tank 10. It will be understood, however, that the outer shell 12 may be constructed using the principles described below and used as a tank without inserting an inner tank 26.
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In this patent document, the word “comprising” is used in its non-limiting sense to mean that items following the word are included, but items not specifically mentioned are not excluded. A reference to an element by the indefinite article “a” does not exclude the possibility that more than one of the element is present, unless the context clearly requires that there be one and only one of the elements.
The scope of the following claims should not be limited by the preferred embodiments set forth in the examples above and in the drawings, but should be given the broadest interpretation consistent with the description as a whole.
