HF high powder electron tube with fluid flow cooling - has envelope covering anode and containing cooling fluid which is directed by projection of internal wall over anode surface

摘要

A high power triode (1) includes a cylindrical directly-heated cathode (5) surrounded by a grid (8) and placed along the longitudinal axis of the tube (3). An anode (15) is situated about the grid. The active part of the anode, which faces the cathode and collects all the emitted electrons, has a diameter smaller than the rest of the anode. A cooling envelope (35), surrounding the anode so that its internal wall (37) follows the anode contour, is provided with a jetting-out component (75), attached to the wall with screws. The anode surface opposite this projection has several grooves (70) backing the active area of the anode and increasing the heat exchange rate. A cooling fluid, pumped through an aperture (49) flows along the anode exterior and is evacuated through a second opening (51). USE/ADVANTAGE - For cooling high power triode, tetrode or pentode. Offers improved cooling efficiency of anode active area.