| 摘要 |
<p>A heat-recovery gas turbine rotor (5) having multi-stage moving blades designed to be mounted on each disc (12) comprising inside cavities (9) and outside cavities (8) that are provided between respective discs (12), blade cooling paths (6) for respective moving blades except the rear-most stage moving blade, a cooled steam supply path (13) provided between a rearward portion of the rear-most stage moving blade and the front edge portion of the front-most stage moving blade, a branch path (16) provided at the front-most stage disc portion (12) in such a manner as to communicate with the cooled steam supply path (13) at the proximal end and be branched at the distal end thereof to thereby communicate with one of the blade cooling paths (6) at one of the branches and with the outside cavities (8) at the other, a blade return path (17) designed to communicate with the other blade cooling path (6) at the proximal end thereof and with the inside cavities (9) at the distal end thereof, a cavity connecting path (20) for establishing a connection between the respective inside cavities (9), a return path (11) extending from the inside cavity (9) of the rear-most stage moving blade along the cooled steam supply path (13), blade connecting paths (18) each provided on each disc portion except the front-most and rear-most stage discs for establishing a communication between the blade cooling paths (6) and the outside cavities (8), and an inter-cavity path (19) for connecting the rear-most stage outside cavity (8) to inside cavities (9).</p> |
