Storage tank containment system

1. A natural gas storage containment tank for use in containing a large volume of high pressure compressed natural gas (CNG) or a large volume of liquid natural gas (LNG), the natural gas storage tank comprising:

four rigid substantially vertical hollow tubular walls positioned approximately 90 degrees apart, the vertical walls each having a longitudinal axis and a first and a second end;

eight rigid substantially horizontal hollow tubular walls each having a longitudinal axis interconnecting and in fluid communication with the respective vertical tubular wall first or second end defining an interior fluid chamber forming a six-sided cube-shaped tank configuration, wherein fluid communication between the horizontal hollow tubular walls connected to the first end and the horizontal hollow tubular walls connected to the second end is through one of the vertical hollow tubular walls; and

an internal bulkhead reinforcement positioned within the interior chamber and connected to the respective horizontal and vertical tubular walls.

2. The storage tank of claim 1 wherein the vertical or horizontal hollow tubular walls each comprise a closed cross-section peripheral wall perpendicular to the respective longitudinal axis.

3. The storage tank of claim 2 wherein each of the horizontal and vertical tubular walls comprises a cylinder portion having a substantially circular cross-section and the sidewalls extend parallel along the longitudinal axis.

4. The storage tank of claim 1 wherein the internal bulkhead reinforcement further comprises three opposing webs connected to and angularly positioned from one another, each web is connected to a different connection joint defined by the intersection of one of the horizontal tubular walls and one of another horizontal tubular wall and vertical tubular wall.

5. The storage tank of claim 1 further comprising a base connected to at least two of the horizontal tubular walls to vertically support the tank when positioned on a support surface.

6. A natural gas storage containment tank for use in containing a large volume of high pressure compressed natural gas (CNG) or a large volume of liquid natural gas (LNG), the natural gas storage tank comprising:

four rigid substantially vertical hollow tubular walls positioned approximately 90 degrees apart, the vertical walls each having a longitudinal axis and a first and a second end;

eight rigid substantially horizontal hollow tubular walls each having a longitudinal axis interconnecting and in fluid communication with the respective vertical tubular wall first or second end defining an interior fluid chamber forming a six-sided cube-shaped tank configuration, wherein fluid communication between the horizontal hollow tubular walls connected to the first end and the horizontal hollow tubular walls connected to the second end is through one of the vertical hollow tubular walls; and

a plurality of closure panels connected to adjacent tubular walls to define a central storage chamber positioned between the tubular walls and capable of confining fluids within the central storage chamber.

7. The storage tank of claim 6 wherein one of the vertical or horizontal tubular walls has a port positioned between the closure panels for fluid communication between the interior chamber and the central chamber.

8. A storage tank for use in containing a fluid the storage tank comprising:

four substantially vertical hollow tubular walls positioned approximately 90 degrees apart, the vertical walls each having a longitudinal axis and a first and a second end, each vertical wall having a hollow corner portion positioned at each of the first and the second ends;

eight substantially horizontal hollow tubular walls interconnecting and in fluid communication with the corner portions defining an interior fluid chamber, each horizontal tubular wall having a longitudinal axis and connecting to two corner portions positioned at respective first ends or second ends of the opposing vertical tubular walls forming a six-sided cube-shaped tank configuration;

an internal bulkhead reinforcement positioned within the interior chamber and connected to the corner portion, the bulkhead including three opposing webs connected to and angularly positioned from one another, each web is connected to a different connection joint defined by the intersection of one of the horizontal tubular walls and one of another horizontal tubular wall and vertical tubular wall, wherein fluid communication between the horizontal hollow tubular walls connected to the first end and the horizontal hollow tubular walls connected to the second end is through one of the vertical hollow tubular walls.

9. The storage tank of claim 8 wherein at least one of the bulkhead webs defines at least one through aperture to maintain fluid communication of the internal chamber on either side of the respective at least one web.

10. The storage tank of claim 8 wherein the bulkhead further comprises a plate positioned in a vertical tubular wall connecting to a respective bulkhead in the adjacent corner portions on each of the first and the second ends of the vertical tubular wall.

11. A storage tank for use in containing a fluid the storage tank comprising:

four substantially vertical hollow tubular walls positioned approximately 90 degrees apart, the vertical walls each having a longitudinal axis and a first and a second end, each vertical wall having a hollow corner portion positioned at each of the first and the second ends;

eight substantially horizontal hollow tubular walls interconnecting and in fluid communication with the corner portions defining an interior fluid chamber, each horizontal tubular wall having a longitudinal axis and connecting to two corner portions positioned at respective first ends or second ends of the opposing vertical tubular walls forming a six-sided cube-shaped tank configuration, wherein fluid communication between the horizontal hollow tubular walls connected to the first end and the horizontal hollow tubular walls connected to the second end is through one of the vertical hollow tubular walls;

a plurality of closure panels connected to adjacent tubular walls to define a central chamber positioned between the tubular walls; and

a port positioned in one of the horizontal or vertical walls between the closure panels for fluid communication between the interior chamber and the central chamber through the port.