초록 ▼

Methods and apparatus are provided for detection of leaks in boilers containing a temperature control liquid which is supplemented with feedwater and removed as blowdown, main steam and sootblower steam. In a preferred embodiment, the boiler has an automatic liquid level control mechanism. The metho

Methods and apparatus are provided for detection of leaks in boilers containing a temperature control liquid which is supplemented with feedwater and removed as blowdown, main steam and sootblower steam. In a preferred embodiment, the boiler has an automatic liquid level control mechanism. The methods include measuring rates associated with feedwater supplementation and removal, correcting for the offsets between the supplementation and removal rates, determining the unaccounted for water rate, and comparing the unaccounted for water rate with zero to determine if a leak condition is present.

대표청구항 ▼

[ Having thus described the invention, what we claim is:] [1.]1. A method for detecting a leak in a boiler having an automatic liquid level control mechanism in which a temperature control liquid in a containment means is supplemented with feedwater and is removed as blowdown, main steam and sootblo

[ Having thus described the invention, what we claim is:] [1.]1. A method for detecting a leak in a boiler having an automatic liquid level control mechanism in which a temperature control liquid in a containment means is supplemented with feedwater and is removed as blowdown, main steam and sootblower steam comprising:a) measuring a rate associated with said feedwater supplementation to obtain data;b) measuring a rate associated with said blowdown, main steam, and sootblower steam removal to obtain data;c) determining time and flowmeter reading offsets between feedwater supplementation means and removal means;d) determining an unaccounted for water rate according to the formula:U=unaccounted for water rate;i=time index;t=time;I=water input rate;b=a determinable constant;a=a determinable constant;O=water output rate; andc=a determinable constant;e) comparing said unaccounted for water rate with zero; andf) indicating a leak condition if said unaccounted for water rate is greater than zero.