Document Type and Number:
Japanese Patent JPS5111755
Kind Code:
B1
Abstract:
1298804 Pumps operating by electromagnetic interaction with fluids UNITED KINGDOM ATOMIC ENERGY AUTHORITY 19 May 1970 [30 May 1969] 27659/69 Heading H2A [Also in Division G6] An electromagnetic liquid metal pump comprises at least a pair of parallel ducts for liquid metal with a magnetic field applied transversely across the ducts such that by passing liquid metal through one of the ducts an EMF is generated in the liquid metal being passed through the duct. The EMF drives a current through the liquid metal in the second duct and an electromagnetic pumping action is thereby exerted on the liquid metal in the second duct. As shown in Fig. 2. the pump comprises a casing 21 divided into ducts 23, 24, 25 and 26 across which a magnetic field is set up by a permanent magnet (not shown). When liquid sodium is passed upwards through a pipe (not shown) in duct 23, it generates an EMF which in turn creates a downwards pumping action on lithium in pipes (not shown) in ducts 25, 26. A switching line 29 passing through the duct 24 comprises a closed loop with sodium in the bottom U of the lcop. The effect of this switching line 29 is that as the flow of sodium through the duct 23 is gradually increased there is initially no pumping action on the lithium in the ducts 25, 26. At first static sodium in the bottom U of the switching line 29 is drawn up into the duct 24 and at a threshold value of sodium flow rate through the duct 23 maximum pumping action is rapidly achieved on the lithium.
Application Number:
JP4683970A
Publication Date:
April 13, 1976
Filing Date:
May 30, 1970
Export Citation:
International Classes:
G21C7/22; (IPC1-7): G21C7/22