JPH0476943U

JPH0476943U -

Info

Publication number: JPH0476943U
Application number: JP11881490U
Authority: JP
Priority date: 1990-11-15
Filing date: 1990-11-15
Publication date: 1992-07-06

Description

[Brief explanation of the drawing]

第１図はこの考案の第１実施例を示す消音装置
の断面図を含むガスタービン全体の構成図、第２
図は第１図の要部の断面図、第３図はこの考案の
第２実施例を示す要部の断面図、第４図はこの考
案の第３実施例を示す要部の断面図、第５図はこ
の考案の第４実施例を示す要部の断面図、第６図
は従来の消音装置の断面図、第７図は減音量の周
波数特性図、第８図は従来例とこの考案の実施例
との減音特性を比較した説明図である。２３……吸音材、３３……消音通路、３５，７
７……隔壁（周波数可変手段）、３７，６９，８
５，９９……共鳴室、３９，７３，８９……空気
室（周波数可変手段）、４３……通路、４５，７
９，９３……ばね（周波数可変手段）、５１……
空気導入管（周波数可変手段）、８１……制御板
（周波数可変手段）、９１……可動板（周波数可
変手段）、９５……ピストン（周波数可変手段）
、１０３……駆動装置（周波数可変手段）、１０
５……変換器（周波数可変手段）。 Fig. 1 is an overall configuration diagram of a gas turbine including a sectional view of a silencer showing a first embodiment of this invention;
The figure is a sectional view of the main part of Fig. 1, Fig. 3 is a sectional view of the main part showing the second embodiment of this invention, and Fig. 4 is a sectional view of the main part showing the third embodiment of this invention. Fig. 5 is a cross-sectional view of the main parts showing the fourth embodiment of this invention, Fig. 6 is a cross-sectional view of a conventional muffler, Fig. 7 is a frequency characteristic diagram of sound reduction, and Fig. 8 is a diagram of the conventional example and this muffler. It is an explanatory view comparing sound reduction characteristics with an example of the invention. 23... Sound absorbing material, 33... Sound deadening passage, 35, 7
7... Partition wall (frequency variable means), 37, 69, 8
5,99... Resonance chamber, 39,73,89... Air chamber (frequency variable means), 43... Passage, 45,7
9, 93... Spring (frequency variable means), 51...
Air introduction pipe (frequency variable means), 81... Control plate (frequency variable means), 91... Movable plate (frequency variable means), 95... Piston (frequency variable means)
, 103... Drive device (frequency variable means), 10
5...Converter (frequency variable means).

Claims

[Scope of utility model registration request]

A noise-absorbing passage through which intake or exhaust air passes and is provided with a sound-absorbing material, a resonance chamber provided in the passage communicating with the silence passage, and a frequency variable means for changing the resonance frequency of the resonance chamber according to the operating state of the gas turbine. A gas turbine silencing device characterized by having the following.