Patent ID: 6050776
Filing Date: 2000-04-18
Classification: F01D,F05D

Abstract:
A gas turbine blade unit comprising:a first stationary blade having an inner end portion and an outer end portion;a second stationary blade disposed adjacent to said first stationary blade, and having an inner end portion and an outer end portion;an outer shroud divided into a first outer shroud section and a second outer shroud section, wherein said outer end portions of said first and second stationary blades are connected to said first and second outer shroud sections, respectively;flanges provided on said first and second outer shroud sections, respectively, so that said first and second outer shroud sections can be secured together by bolts;an inner shroud divided into a first inner shroud section and a second inner shroud section, wherein said inner end portions of said first and second stationary blades are connected to said first and second inner shroud sections, respectively;flanges provided on said first and second inner shroud sections, respectively, such that said first and second outer shroud sections can be secured together by bolts;pinholes provided in opposing faces of said first and second outer shroud sections and extending in a turbine rotation tangential direction, said opposing faces extending in a turbine axial direction; andpins inserted into said pinholes, respectively, wherein said pins have a thermal expansion coefficient which is larger than that of said inner and outer shrouds.