| 摘要 |
PROBLEM TO BE SOLVED: To cool sealing water while a dearator is compact, its installing space is small and an extension deaeration module can be easily installed by a method wherein the deaerator comprises respective units wherein water feed is operated to deaerate a dissolved gas in raw water, and a vacuum pump is provided to perform necessary control. SOLUTION: A deaerator comprises a base unit 2 operating feed water, a deaeration unit 3 of a dissolved gas in raw water, a control unit 4 performing control operation, and a pump unit 5 equipped with a vacuum pump. The aeration unit 3 is arranged between the base unit 2 and the control unit 4, and the pump unit 5 is arranged below the base unit 2 and the deaeration unit 3. The base nut 2 is equipped with a flow rate control valve 12, a sealing water storage part, and a heat exchanger 13. Extension of the deaeration unit is completed by installing a module bed having an extension unit placed thereon to the control unit 4 and connecting respective kinds of pipe lines. Thereby, the whole of the degasifier 1 becomes compact, the installing space is small, the aeration module can be easily extended, and deaeration efficiency can be improved by water seal cooling of the vacuum pump.
|
