Method of and apparatus for the deaeration of liquid flowing in a closed circulation system
AssigneeSpiro Research B.V.
InventorFranciscus Roffelsen
Life of this patent
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Abstract
The liquid flowing through a heat circulation system including a boiler can be maintained in an air absorbing condition even at the highest elevation in the circulation system. The air absorbing condition is attained by alternately subjecting the liquid in the boiler to the high pressure of the circulating system and at least to atmospheric pressure and effecting deaeration while the liquid is at atmospheric pressure. During deaeration the liquid is blocked from flowing from the boiler into the circulation system. Following deaeration, the liquid is brought up to the high pressure of the system before it is directed back into the system.
Claims24
Method of deaerating a closed liquid circulation system for use in a heating system including a water boiler and a circulation system for receiving liquid from and returning liquid to said boiler, including maintaining the circulation system at a high pressure above atmospheric pressure and pressure degasing the liquid by periodically depressurizing the liquid, wherein the improvement comprises subjecting the entire contents within the boiler alternately to the high pressure of the circulation system and at least to atmospheric pressure, deaerating the liquid in the boiler while it is subjected at least to atmospheric pressure and during the deaeration operation preventing the flow of the liquid from the boiler into the circulation system, after deaeration, while preventing the flow of liquid from the boiler into the circulation system, bringing the liquid within the boiler up to the high pressure of the circulation system and when the high pressure has been attained in the boiler directing the liquid from the boiler into the circulation system.
Apparatus for deaerating a closed liquid circulation system comprising a boiler, a closed cycle circulation system connected to said boiler for recirculating the liquid from the boiler through the circulation system and back into the boiler at a high pressure above atmospheric pressure, said circulation system including a first line for conducting the liquid out of the boiler and a second line for conducting the liquid back into the boiler, a regulatable flow control valve in each of said first and second lines for selectively preventing flow from said circulation system into said boiler, a circulating pump having a suction side and a pressure side located in said circulation system with said first line connected to the suction side of said pump and said second line connected to the pressure side of said pump, a deaeration vessel located above said boiler, means connecting the top of the boiler to the deaeration vessel so that the entire contents of the boiler are accessible to the deaeration vessel, and a pressure generator located in said second line downstream from said flow control valve in said second line and connected to said boiler for selectively subjecting the entire contents of the boiler to one of the high pressure of the circulation system and at least atmospheric pressure.
Apparatus for deaerating a closed liquid circulation system comprising a boiler, a closed cycle circulation system connected to said boiler for recirculating the liquid from the boiler through the circulation system and back into the boiler, said circulation system including a first line for conducting the liquid out of the boiler and a second line for conducting the liquid back into the boiler, a regulatable flow control valve in at least one of said first and second lines, deaerator means connected to the upper end of said boiler, a first cylindrically shaped housing connected to the upper end of said boiler and a second cylindrically shaped housing connected to the lower end of said boiler, said first line connected to said first housing and said second line connected to said second housing, each of said first and second housings forming a cylindrically shaped space, a first displacement piston located in said cylindrically shaped space in said first housing and a second displacement piston located in said cylindrically shaped space in said second housing.
Dependencies are inferred from the claim text.