| 摘要 |
The valve has a control unit for controlling air and gas inlet flaps and actuation units formed of toothed crown rings (12, 13), drive pawl and a control wheel (50). Each of the units drives one of the flaps from open position to closed position of pathway. The toothed wheel and the actuation units enable the flaps, in a nominal operating mode, to simultaneously reach the closed position. A top air end-stop (31) is configured to block the actuation unit when the air inlet flap is in the closed position. A detection unit e.g. sensor, detects travel of another flap beyond the closed position. The control unit is formed by electric motor, pinion, intermediate toothed wheel (9) and peripheral teeth and central teeth. An independent claim is also included for a method for testing integrity of kinematic chain of a three-way valve. |
