NOZZLE MODULE, NOZZLE DIAPHRAGM, STEAM TURBINE, METHOD OF ASSEMBLING NOZZLE DIAPHRAGM, METHOD OF ASSEMBLING STEAM TURBINE, AND METHOD OF DISASSEMBLING STEAM TURBINE

• Main Authors: TERADA KATSUMI, TSURUSAKI YUZO
• Format: Patent
• Language: English; Japanese
• Published: 04.08.2023
• Subjects: BLASTING; ENGINE PLANTS IN GENERAL; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; STEAM ENGINES; WEAPONS

To easily and reliably manufacture a nozzle ring having high accuracy.SOLUTION: A nozzle module constituting a nozzle ring which can be arranged between an inner ring extending in a circumferential direction around a center axis and an outer ring arranged on a radially outer side with respect to the inner ring around the center axis and extending in the circumferential direction, comprises: a nozzle body being of an airfoil shape in cross section and extending in a radial direction; and platform members integrally connected to radial ends of the nozzle body. The platform members each have a first portion which is formed on a first side in an axial direction in which the center axis extends when viewed from the radial direction, and has a pair of first side faces extending in the axial direction, and a second portion which is formed so as to extend to a second side in the axial direction with respect to the first portion when viewed from the radial direction, and has a second side face extending obliquely with respect to the first side face.SELECTED DRAWING: Figure 4 【課題】容易かつ確実に、高い精度を有したノズルリングを製作する。【解決手段】ノズルモジュールは、中心軸回りの周方向に延びる内輪と、内輪に対して中心軸を中心とした径方向の外側に配置されて周方向に延びる外輪と、の間に配置可能とされるノズルリングを構成するノズルモジュールであって、断面が翼型形状をなして径方向に延びるノズル本体と、径方向でのノズル本体の端部に一体にそれぞれ接続されたプラットフォーム部材と、を備え、プラットフォーム部材は、径方向から見た際に、中心軸の延びる軸方向の第一側に形成され、軸方向に延びる一対の第一側面を有した第一部分と、径方向から見た際に、第一部分に対して軸方向の第二側に延びるように形成され、第一側面に対して傾斜して延びる第二側面を有した第二部分と、を備える。【選択図】図４