发明名称 |
AN ULTRASONIC CLEANING METHOD |
摘要 |
An ultrasonic cleaning method for cleaning the film, scale and sludge from internal surfaces of tubes (16), tubesheets (18), tube support plates (20) and channel heads (22) of steam generators (10) previously exposed to water or steam at temperatures of more than 200 °C introduces an ultrasonic transducer (52) or transducer array into the steam generator and submerges the ultrasonic transducer (5) and the surface to be cleaned in water or aqueous solution. Ultrasonic energy is introduced into the water at a power level of 20 watts/gallon or more and at frequencies of from 10 to 200 KHz. Large amounts of ultrasonic energy can be introduced into the water so that the energy can efficiently penetrate into the interior rows of tubes and other internal structures.
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申请公布号 |
CA2378932(C) |
申请公布日期 |
2010.09.14 |
申请号 |
CA20002378932 |
申请日期 |
2000.07.12 |
申请人 |
DOMINION ENGINEERING, INC. |
发明人 |
VARRIN, ROBERT D., JR.;KANEDA, SOTARO;SASADA, NAONOBU |
分类号 |
F28G7/00;G21F9/28;B08B3/12;B08B7/02;B08B9/02;B08B9/08;F22B37/00;F22B37/48 |
主分类号 |
F28G7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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