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Gas turbine

A technology for gas turbines and combustion exhaust gas, which is applied in the direction of gas turbine devices, mechanical equipment, engine components, etc., and can solve problems such as high manufacturing costs, maintenance and inspection costs, and complex gas turbine systems and applications

Inactive Publication Date: 2011-01-12
MITSUBISHI HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, in the gas turbine disclosed in the aforementioned Patent Document 1, it is necessary to additionally install (newly install) piping for pressing the air drawn from the working fluid path before entering the combustor into the working fluid path downstream of the combustor outlet and Booster pumps, etc., so the system and operation of the gas turbine are complicated, and the manufacturing cost and maintenance inspection cost are high.

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Embodiment Construction

[0120] Below, refer to figure 1 A gas turbine according to a first embodiment of the present invention will be described. figure 1 It is a system diagram of the gas turbine of this embodiment.

[0121] Such as figure 1 As shown, the gas turbine 1 of the present embodiment has, as the main structural elements, a compression unit 2 for compressing combustion air; fuel is injected into the high-pressure air sent from the compression unit 2 and combusted to generate high-temperature combustion exhaust gas. Combustion part 3; Turbine part 4, which is located on the downstream side of the combustion part 3 and is driven by combustion exhaust gas released from the combustion part 3; Gas turbine compartment (not shown shown in the figure); a vane-based cooling air system that guides (medium-pressure) compressed air drawn from the middle (middle stage) of the compression unit 2 into the vanes (for example, second-stage vanes) constituting the turbine unit 3 5. A rotor system cooling...

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Abstract

A gas turbine which has a simplified system and can be operated simply, produced at low cost, maintained and inspected at low cost, and can be operated in turn-down conditions. The gas turbine (1) has a compression section (2); a combustion section (3); a turbine section (4); a gas turbine wheel casing for housing therein the compression section (2), the combustion section (3), and the turbine section (4); a cooling air system (5) for stator system, the cooling air system guiding compressed air extracted from the middle of the compression section (2) into a stator which forms the turbine section (4); and a wheel casing extraction system (6) for extracting the compressed air from the outlet of the compression section (2) to the outside of the gas turbine wheel casing. A middle portion of the cooling air system (5) for stator system and a middle portion of the wheel casing extraction system (6) are interconnected through a communication passage (12). Flow rate control means (13) is connected to the middle of the communication passage (12).

Description

technical field [0001] The present invention relates to a gas turbine, and more specifically, to a gas turbine capable of regulating operation (partial load operation or low load operation). Background technique [0002] As a gas turbine capable of throttling operation, for example, a gas turbine disclosed in Patent Document 1 is known. [0003] [Patent Document 1] Japanese Unexamined Patent Publication No. 2007-182883 [0004] When the gas turbine is operated at a high load, the turbine inlet temperature (combustor outlet temperature) of the gas turbine is maintained at a high temperature, and thus the CO (carbon monoxide) emission of the gas turbine is kept low. However, in the case of low-load operation or partial-load operation, the CO emission amount may increase when the turbine inlet temperature is lowered. Therefore, the aforementioned Patent Document 1 discloses a method of maintaining a high turbine inlet temperature even under a low load. [0005] However, in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02C7/18F02C9/18
CPCF02C9/18F02C7/18F01D25/12F02C7/185Y02T50/60
Inventor 久保田哲郎高桥达治藤井庆太桂广人
Owner MITSUBISHI HEAVY IND LTD
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