发明名称 |
Methods and systems for maintaining a high vacuum in a vacuum enclosure |
摘要 |
A system for maintaining a high vacuum in a vacuum enclosure such as cryostat, for example, is described. The system includes a high-vacuum pump having an input that is connected to the cryostat and an output. A vacuum vessel is connected to the output of the high-vacuum pump. A second vacuum pump is connectable to the vacuum vessel. The system is operated such that the high-vacuum pump maintains the cryostat at a high vacuum and the second vacuum pump is periodically operated to maintain the pressure of the vacuum vessel below a threshold pressure. The second vacuum pump may be either permanently connected to, or removable from, the vacuum vessel. The vacuum vessel acts to maintain the output of the high-vacuum pump within a suitable pressure range. This removes the need for the output of the high-vacuum pump to be connected to a continuously operating, second-stage vacuum pump. Furthermore, the second vacuum pump is only required to be operated periodically in order to maintain the pressure in the vacuum vessel below the threshold pressure. |
申请公布号 |
US9574564(B2) |
申请公布日期 |
2017.02.21 |
申请号 |
US201113990239 |
申请日期 |
2011.11.24 |
申请人 |
GE Energy Power Conversion Technology LTD. |
发明人 |
Ingles Martin Richard;Fair Ruben;Eugene Joseph |
分类号 |
F04D13/12;F04C23/00;F04C25/02;F04B37/14;F04D25/16 |
主分类号 |
F04D13/12 |
代理机构 |
Wood IP LLC |
代理人 |
Wood IP LLC |
主权项 |
1. A system for maintaining a high vacuum in a vacuum enclosure comprising:
a rotary cryostat; a vacuum vessel; a high-vacuum pump having an input connected to the vacuum enclosure and an output connected to the vacuum vessel; and a second vacuum pump connectable to the vacuum vessel; wherein the high-vacuum pump is operated to maintain the cryostat at a high vacuum and the vacuum vessel is maintained below a threshold pressure by periodic operation of the second vacuum pump, and; wherein the high-vacuum pump and the vacuum vessel are mounted to rotate with the rotary cryostat. |
地址 |
GB |