TURBINE WITH BUCKET FIXING MEANS

摘要

There is provided a turbine including a rotor wheel including a plurality of dovetail grooves and at least one insertion groove, the dovetail grooves and the insertion groove arranged in a circumferential direction of the rotor wheel; a plurality of first buckets, each of the first buckets including a vane, a platform provided at a first end portion of the vane, and a dovetail provided at the platform and having a shape corresponding to a corresponding dovetail groove; at least one second bucket including a vane, a platform provided at a first end portion of the vane, and at least one protrusion portion provided at the platform and configured to be inserted into a corresponding insertion groove of the insertion groove; and a fixing member configured to be inserted through the protrusion portion and the rotor wheel and configured to restrict radial movement of the second bucket.

主权项

1. A turbine comprising:
a rotor wheel comprising a plurality of dovetail grooves and at least one insertion groove, the plurality of dovetail grooves and the at least one insertion groove arranged in a circumferential direction of the rotor wheel; a plurality of first buckets, each of the plurality of first buckets comprising a first vane, a first platform provided at a first end portion of the first vane, and a dovetail provided at the first platform and having a shape corresponding to a corresponding dovetail groove of the plurality of dovetail grooves; at least one second bucket comprising a second vane, a second platform provided at a first end portion of the second vane, and at least one protrusion portion provided at the second platform and configured to be inserted into a corresponding insertion groove of the at least one insertion groove; and a fixing member configured to be inserted through the at least one protrusion portion and the rotor wheel and configured to restrict radial movement of the at least one second bucket.