Title:
PUMP FOR CRYOGENIC LIQUEFIED GAS
Document Type and Number:
WIPO Patent Application WO/2012/056832
Kind Code:
A1
Abstract:
Provided is a pump for cryogenic liquefied gas, which is capable of shortening pre-cooling time, reduces the loss of cryogenic liquefied gas, has high pump efficiency, and is cost effective.
Disclosed is a pump for cryogenic liquefied gas, wherein a motor (1) and an impeller (2) are coupled with each other by a shaft (3) transmitting rotary drive therebetween, so arranged that the motor (1) is on the upper side and the impeller (2) is on the lower side, and exist in an enclosed space (14) introducing cryogenic liquefied gas in communication with each other, a heat adjustment portion (11) for holding the motor (1) and the impeller (2) in a gas phase and a liquid phase of the cryogenic liquefied gas respectively is provided between the motor (1) and the impeller (2). Thus, the motor (1) is not immersed in a liquid, the pre-cooling time can be significantly shortened, the loss amount of gasification of the cryogenic liquefied gas can be reduced, and the motor (1) itself can be constructed of relatively inexpensive materials.
Inventors:
JOHCHI TAKETO (JP)
KUNITANI SHINGO (JP)
YOSHINO AKIRA (JP)
KUNITANI SHINGO (JP)
YOSHINO AKIRA (JP)
Application Number:
PCT/JP2011/071545
Publication Date:
May 03, 2012
Filing Date:
September 14, 2011
Export Citation:
Assignee:
AIR WATER INC (JP)
JOHCHI TAKETO (JP)
KUNITANI SHINGO (JP)
YOSHINO AKIRA (JP)
JOHCHI TAKETO (JP)
KUNITANI SHINGO (JP)
YOSHINO AKIRA (JP)
International Classes:
F04D7/02; F04D13/00
Foreign References:
| JPS59200091A | 1984-11-13 | |||
| JPS4632899B1 | 1971-09-27 | |||
| JPH06288382A | 1994-10-11 | |||
| JP2001514360A | 2001-09-11 |
Other References:
"Cryogenic Pump Catalogue", NIKKISO CO., LTD.
SUGURU YOSHIDA: "Fundamental Study of Heat Transfer", 1999, RIKOGAKUSHA PUBLISHING CO., LTD., pages: 36 - 39
"New Edition of Thermophysical Properties Handbook", 2008, YOKENDO CO., LTD., pages: 213
TOYOICHIRO SHIGI: "Low-Temperature Engineering Handbook", 1982, UCHIDA ROKAKUHO PUBLISHING CO., LTD., pages: 197
SUGURU YOSHIDA: "Fundamental Study of Heat Transfer", 1999, RIKOGAKUSHA PUBLISHING CO., LTD., pages: 36 - 39
"New Edition of Thermophysical Properties Handbook", 2008, YOKENDO CO., LTD., pages: 213
TOYOICHIRO SHIGI: "Low-Temperature Engineering Handbook", 1982, UCHIDA ROKAKUHO PUBLISHING CO., LTD., pages: 197
Attorney, Agent or Firm:
MORIMOTO, NAOYUKI (JP)
Naoyuki Morimoto (JP)
Naoyuki Morimoto (JP)
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Claims:
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