发明名称 |
DESCALING DEVICE FOR STEAM GENERATOR |
摘要 |
Disclosed is a scale removing device for removing scale adhering to the interior of a shell-and-tube-heat-exchanger-type steam generator. The scale removing device is provided with a flexible lance (58) holding a high-pressure water hose (91) and movable with respect to the tube plate, the tube support plates, and the heat-transfer tubes, and a cleaning head (60) mounted to the forward end of the flexible lance. Formed inside the cleaning head is a cavitation generating nozzle hole (99a, 99b) communicating with the high-pressure water hose. Bubbles are generated at the time of cleaning, and the impact pressure generated when the bubbles collapse is propagated to remove scale over a wide range. <IMAGE> |
申请公布号 |
EP1170567(A4) |
申请公布日期 |
2004.04.28 |
申请号 |
EP20000902850 |
申请日期 |
2000.02.03 |
申请人 |
MITSUBISHI HEAVY INDUSTRIES, LTD. |
发明人 |
SHIRAISHI, TADASHI;ICHIOKA, TAKEHIKO;OKADA, HIDEYA;NAKAO, F.;KINUGASA, TOSHIYUKI |
分类号 |
B08B3/02;B08B3/10;C02F1/00;F22B37/47;F22B37/48;F28G1/16;F28G9/00;F28G13/00;F28G15/04 |
主分类号 |
B08B3/02 |
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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