Method and apparatus for maintaining the level of cold liquid within a vessel
AssigneeChicago Bridge & Iron Technical Services Company
InventorsDon H. Coers, Ronald C. Weber, Richard J. Kooy
Life of this patent
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Abstract
A method and apparatus for limiting the level of cold liquid within a vessel by sensing the expansion of cold liquid due to ambient heat leak, and venting pressurized vapor from the vessel to reduce the rate of expansion of the cold liquid.
Claims30
A method for limiting the level of cold liquid within a vessel, said method comprising the steps of:
- (a) sensing the expansion of cold liquid to a predetermined level within said vessel;
- and
- (b) maintaining the temperature of the liquid by releasing vapor from the vessel as a result of sensing cold liquid at said predetermined level.
An apparatus for limiting the level of cold liquid within a vessel, said apparatus comprising:
- (a) means for sensing the expansion of cold liquid to a predetermined level within said vessel;
- and
- (b) means for maintaining the temperature of the liquid by releasing vapor from said vessel as a result of sensing cold liquid at said predetermined level.
An apparatus for limiting the level of cold liquid within a vessel having an inner wall and an outer wall spaced apart from the inner wall to define an evacuated space, said apparatus comprising:
- (a) means for sensing the expansion of cold liquid to a predetermined level within said vessel, said means at least partially positioned in said evacuated space;
- and
- (b) means for maintaining the temperature of the liquid by releasing vapor from said vessel as a result of sensing cold liquid at said predetermined level.
Dependencies are inferred from the claim text.