Man Turbomaschinen Ag Ghh Borsig

Ghh Borsig Turbomaschinen Gmbh

Achim Zimmermann

The blades ( ) of a turbine of axial design are inserted into an undercut blade groove ( ) of the turbine rotor ( ) in a positive-locking manner and are secured by a blade lock. The blade lock comprises a mounting space ( ), which is in connection with the blade groove ( ) and into which a filler piece ( ), which is in positive-locking relationship with the blade foot ( ) of the blades ( ), and a wedge ( ) are inserted. The cross section of the mounting space ( ) receiving the filler piece ( ) is widened conically beginning from the blade groove ( ). The cross section of the filler piece ( ) is adapted to the cross section of the mounting space ( ).

Blade lock and process for manufacturing a blade lock

A steam control valve is provided with a valve core arranged in the valve housing (10), with an upper valve spindle (5) guided in a sealing packing (12), with a valve cone (1) sliding in a lower and upper valve core (3b) and (3a), and with a valve diffusor (6) arranged in the valve housing (10). Piston rings (4a) are inserted in the upper part (1a) of the valve cone (1) sliding in the valve core upper part (3a), and piston rings (4b) are inserted in the lower part (1c) of the valve cone (1) sliding in the valve core lower part (3b). Clean water is used as the hydraulic fluid for the hydraulic drive attached to a connection spacer (15). At least one axial hole (2) is provided in the valve cone (1). With the upper part (3a) and the lower part (3b) of the valve core (3), the middle part (1b) of the valve cone forms an annular chamber (8), at which at least one suction channel (9) is arranged.

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Mülheim, Germany

Achim Zimmermann