| 摘要 |
FIELD: machine building.SUBSTANCE: end bands (411) on blades (419) of the last stage of condensate steam turbine (410) can create significant obstacle and create vortex near wall of the steam guide (423, 424) of the diffuser (300), this results in break-away of the steam flow from the said wall of the steal guide. Vortex creation reduces clear opening for the residual fluid distribution thus resulting in insufficient pressure restoration. The directed inside radial shoulder (425) is suggested, it has set height and distance along the internal wall (480) of the steam guides (423, 424) and slightly deflects the flows of end leak downwards, reducing effect of blocking created by bands.EFFECT: prevention of inadmissible high stresses in screws at connection line and in internal casing.10 cl, 9 dwg |
