In view of two consecutive failures of Siemens 3RH1122-2KF40 relay on DKZ15 electric bus of Beijing metro line 10, it is found that Siemens 3RH1122-2KF40 relay has the defects of unreliable contact mechanical structur...
The airflow in the reed groove of the air jet loom for the weft insertion includes the jet stream from the relay nozzle, the back leak stream from the reed, and the diffusion stream from the open side. The air velocit...