Title:
SUBMERGED PUMP VIBRATION PREVENTIVE DEVICE
Document Type and Number:
Japanese Patent JP3292547
Kind Code:
B2
Abstract:
PURPOSE: To prevent damage of a tank or a pump by preventing propagation of vibration of a submerged pump, and extract sludge from a sludge stored tank having no sludge extracting equipment.
CONSTITUTION: A submerged pump vibration preventive device 7 is formed by suspending a content agitating or transferring submerged pump 6 in a radioactive sludge storage tank 2 from the crane side by a vibration preventive rope 7. The vibration preventive rope 7 is composed of plural rope bodies 8 suspended from the different parts above the tank 2 with a lower part converging inclination, and when earthquake force acceleration corresponding to a natural period of a simple pendulum of the submerged pump is denoted by (αg) and gravitational acceleration is denoted by (g), (θ) from a vertical line of these rope bodies is set so as to satisfy an expression of (θ>tan-1α).
Inventors:
Masanobu Sato
Kenichi Serizawa
Katsuo Katata
Kenichi Serizawa
Katsuo Katata
Application Number:
JP15746193A
Publication Date:
June 17, 2002
Filing Date:
June 28, 1993
Export Citation:
Assignee:
Toshiba Corporation
Ishikawajima Harima Heavy Industries Co., Ltd.
Ishikawajima Harima Heavy Industries Co., Ltd.
International Classes:
F04B39/00; B66C17/06; F04D13/08; F16F15/02; G05D19/02; G21C19/00; (IPC1-7): F04D13/08; B66C17/06; F04B39/00; F16F15/02
Domestic Patent References:
| JP356396A | ||||
| JP559843A | ||||
| JP62135699A | ||||
| JP6156383U | ||||
| JP6148993U |
Attorney, Agent or Firm:
Hisano Hatano (1 person outside)
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