| 摘要 |
A converging diverging supersonic nozzle (54) for a kinetic spray system (10) is disclosed. In one embodiment, the supersonic nozzle (54) has a first end (53) opposite an exit end (60) and a diverging region (61) adjacent the exit end (60). A removable throat insert (55, 55') has an entrance cone (56) and a throat (58) and is received in the first end (53) with the throat (58) positioned adjacent the diverging region (61). In another embodiment, the removable throat insert (55') has an entrance cone (56), a diverging region (59) and a throat (58) positioned between the entrance cone (56) and the diverging region (59). The disclosed replaceable throat inserts (55, 55') address the problem of excessive wear in the throat (58) relative to the rest of the supersonic nozzle (54) which has plagued other kinetic spray systems. With the disclosed inserts (55, 55') a worn throat (58) can rapidly and economically be replaced while saving the rest of the supersonic nozzle (54). |
