Combustor and gas turbine with same

Abstract

A combustor which is configured in such a manner that a space for mounting an acoustic damper is reduced, which is reduced in size, and which has improved maintainability. A combustor (5) is provided with a combustion tube (19) which has a combustion region (23) formed therein, and also with an acoustic damper (31) which has a damper cover having an acoustic damper resonance space communicating with the combustion region (23). The damper cover is mounted so as to extend along the combustion tube (19) in the direction crossing the axis direction (L) of the combustion tube (19).

Description

technical field [0001] The present invention relates to a combustor and a gas turbine equipped with the same. Background technique [0002] A gas turbine has a compressor, a combustor, and a turbine. The compressor takes in air, compresses it to high pressure, and sends the high-pressure air to the combustor. [0003] In the combustor, the fuel is blown against the high-pressure air to burn the fuel. The high-temperature combustion gas generated by burning the fuel is sent to the turbine, and the high-temperature combustion gas drives the turbine. [0004] The turbine and the compressor rotate about the same axis of rotation, so by driving the turbine in this way, the compressor is also driven, and air is taken in and compressed as described above. [0005] In the gas turbine operating in this way, combustion vibration may occur when the fuel is combusted, and the combustion vibration may cause noise or vibration during operation of the gas turbine. [0006] In particular...

AI Technical Summary

Problems solved by technology

[0014] However, in the method disclosed in Patent Document 1, a large space is required outside the burner in order to install the bypass flow path and the silencer.

Furthermore, in the method shown in Patent Document 2, needless to say, the silencer extending in the radial direction, even the silencer extending in the axial direction is bent in the radial direction in order to ensure the volume (full length) of the resonance space. , so a large space is required outside the burner in order to install the bypass flow path and the silencer

[0015] In this way, since a large cabin space is required, it may not be possible to transport a gas turbine with an enlarged casing, for example.

Increase in manufacturing cost including this transportation cost

[0016] The burner requires regular maintenance, but in Patent Document 1, the bypass flow path is not removed, and in Patent Document 2, the burner cannot be removed without removing the muffler, so the maintenance work is complicated

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