STATIONARY BLADE SEGMENT, AND STEAM TURBINE WITH THE SAME

To firmly mount multiple stationary blades on a blade ring.SOLUTION: A stationary blade segment 30 comprises a blade ring 70, multiple stationary blades 33, and a caulking member 90 for restraining movements of the multiple stationary blades 33 with respect to the blade ring 70. The blade ring 70 in...

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Bibliographic Details
Main Authors YAMAMOTO YUKI, WAKI YUICHIRO, DANNO SHOHEI
Format Patent
LanguageEnglish
Japanese
Published 12.09.2019
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Summary:To firmly mount multiple stationary blades on a blade ring.SOLUTION: A stationary blade segment 30 comprises a blade ring 70, multiple stationary blades 33, and a caulking member 90 for restraining movements of the multiple stationary blades 33 with respect to the blade ring 70. The blade ring 70 includes: a blade ring groove 73 outer shrouds 50 of the multiple stationary blades 33 enter; and an accommodation space forming part 81. The blade ring groove 73 includes a projection 76 protruding from a second groove side face 74d of the blade ring groove 73 to a first side Dau in an axial direction Da. The accommodation space forming part 81 forms an accommodation space 87 the caulking member 90 enters in cooperation with the outer shrouds 50. The accommodation space forming part 81 communicates with a first groove side face 74u of the blade ring groove 73. The caulking member 90 is settled within the accommodation space 87 and brought into contact with the blade ring groove 73 and the outer shrouds 50. The caulking member 90 is exposed from an inner opening 88i of the accommodation space 87.SELECTED DRAWING: Figure 3 【課題】翼環に複数の静翼をしっかりと取り付ける。【解決手段】静翼セグメント30は、翼環70と、複数の静翼33と、翼環70に対する複数の静翼33の移動を拘束するコーキング部材90と、を備える。翼環70は、複数の静翼33の外側シュラウド50が入り込む翼環溝73と、収納空間形成部81とを有する。翼環溝73は、翼環溝73の第二溝側面74dから軸線方向Daの第一側Dauに突出する凸部76を有する。収納空間形成部81は、外側シュラウド50と共同して、コーキング部材90が入り込む収納空間87を形成する。収納空間形成部81は、翼環溝73の第一溝側面74uとつながっている。コーキング部材90は、収納空間87内に収まり、翼環溝73及び外側シュラウド50に接している。コーキング部材90は、収納空間87の内側開口88iから露出している。【選択図】図3
Bibliography:Application Number: JP20180036496