Telescopic liquid tank

Abstract

A tank is provided, including a tray positioned on a skid; an outer tank wall positioned within the tray; an inner tank wall positioned within the first outer tank wall; wherein the outer tank walls is moveable from a first position wherein the inner tank wall is substantially contained within the outer tank wall; and a second position wherein the moveable outer tank wall is elevated, thereby increasing the height and storage capacity of the tank.

What is claimed is: 
     
         1 . A tank, comprising:
 a. a spill containment tray positioned on a skid;   b. an outer tank wall positioned within the spill containment tray; and   c. an inner tank wall positioned within the outer tank wall,   wherein the outer tank wall is moveable from a first position wherein the inner tank wall is substantially contained within the outer tank wall; and a second position wherein the outer tank wall is elevated thereby increasing the height and storage capacity of the tank.   
     
     
         2 . The tank of  claim 1  wherein when the outer tank wall is in the second position, a seal is formed between the outer tank wall and the inner tank wall. 
     
     
         3 . The tank of  claim 2  wherein the outer tank wall is moveable from the first position to the second position by a plurality of hydraulic lifts. 
     
     
         4 . The tank of  claim 3  further comprising a pump configured to pump water leaking through the seal into the tray back to the tank. 
     
     
         5 . The tank of  claim 4  wherein the seal further comprises a gasket between a bottom inside portion of the outer tank wall and a top outside portion of the inner tank wall. 
     
     
         6 . The tank of  claim 4  wherein the seal further comprises a plurality of inflatable hoses positioned between the outer tank wall and the inner tank wall. 
     
     
         7 . A tank, comprising:
 a. a spill containment tray positioned on a skid;   b. a first tank wall positioned within the spill containment tray; and   c. a second moveable tank wall,   
       wherein the moveable tank wall is moveable from a first position wherein the first and second tank walls are substantially aligned; and a second position wherein the moveable tank wall is elevated thereby increasing the height and storage capacity of the tank.