DAMPING DEVICE AND GAS TURBINE COMBUSTOR

摘要

In a damping device according to the present invention, a damping device 63 is mounted on a bypass pipe 61 that supplies an amount of high-pressure air to a combustor transition piece 33. The damping device 63 includes a fluid introducing unit 71 that forms a fluid introduction space B by covering an outer peripheral portion of the bypass pipe 61, a plurality of acoustic boxes 73a and 73b that forms resonance spaces Da and Db with the base portions connected to the fluid introducing unit 71 and the end portions extending along the outer peripheral portion of the bypass pipe 61 in the circumferential direction, and partition plates 74a and 74b that form resonance ducts Ea and Eb of a predetermined length by partitioning the resonance spaces Da and Db.

主权项

1. A damping device that is mounted on an outer peripheral portion of a pipe including a flow passage through which fluid flows and that damps acoustic vibrations by introducing therein the fluid in the pipe, the damping device comprising:
a fluid introducing unit in which a fluid introduction space that is able to introduce therein the fluid in the flow passage is formed by covering at least a part of the outer peripheral portion of the pipe; a plurality of acoustic boxes that includes a resonance space communicably connected with the fluid introduction space, a base portion connected to the fluid introducing unit, and an end portion extending along the outer peripheral portion of the pipe; and a partition plate that forms a resonance duct of a predetermined length by partitioning each resonance space, wherein the resonance duct includes a resistance member that provides resistance to fluid.