发明授权
- 专利标题： Process for pumping gaseous helium at cryogenic temperatures by a positive displacement pump
- 专利标题（中）： 通过正排量泵在低温下泵送气氦的方法
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申请号： US526817申请日： 1995-08-22
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公开(公告)号： US5628194A公开(公告)日： 1997-05-13
- 发明人: Gerard Claudet
- 申请人： Gerard Claudet
- 申请人地址： FRX Paris
- 专利权人： Commissariat a l'Energie Atomique
- 当前专利权人： Commissariat a l'Energie Atomique
- 当前专利权人地址： FRX Paris
- 优先权： FRX9410217 19940823
- 主分类号： F04C29/00
- IPC分类号： F04C29/00 ; C01B23/00 ; F04C18/02 ; F04C25/00 ; F04C29/04 ; F17C13/00
摘要：
Application of a positive displacement pump to the pumping of helium at very low temperatures. Positive displacement pumps, formed from mobile components (35, 36), which deliver gas volumes to pumping chambers, have the advantage of operating under satisfactory conditions for significant temperature, pressure and gas flow rate variations. They are therefore preferred as compared with the hitherto used centrifugal pumps and have means enabling them to operate at very low temperatures.
公开/授权文献
- US5078909A Moisture-absorbent compositions and molded items 公开/授权日：1992-01-07
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