发明名称 |
Pump for very cold liquids |
摘要 |
A pump for cryogenic liquids is provided with an enclosing vessel of the construction of a Dewar flask. A submerged multistage rotary pump is suspended from the mouth of the flask by means of a system providing thermal insulation opposing the flow of heat down the neck of the flask. The drive motor is coupled to the drive shaft of the immersion pump through a magnet coupling of which the elements are separated by a pressure seal. The latter and the extensive thermal insulation make the pump suitable for pumping liquid air or liquid nitrogen in a pressurized closed circuit and the presence of a supply of the cryogenic liquid around the pump itself makes it possible to start the pump at once after a quiescent period. A level-control sonde operates to assure that the presence of the necessary minimum of liquid in the vessel.
|
申请公布号 |
US4418544(A) |
申请公布日期 |
1983.12.06 |
申请号 |
US19820392652 |
申请日期 |
1982.06.28 |
申请人 |
KERNFORSCHUNGSANLAGE JUELICH GMBH |
发明人 |
HEYBUTZKI, HELMUT;KRUG, WOLFGANG;SEFERIADIS, JOHANN |
分类号 |
F04D7/02;F04B15/08;(IPC1-7):F17C13/00 |
主分类号 |
F04D7/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|