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Gas combustion turbine and its combined equipment and pressure regulating method and computer program

A gas turbine and steam pressure technology, applied in the field of computer programs and gas turbine combined equipment, can solve the problem that the failure of gas turbine cannot be effectively reduced

Inactive Publication Date: 2003-04-09
MITSUBISHI HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, failures of gas turbines cannot be effectively reduced due to backflow of gas

Method used

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  • Gas combustion turbine and its combined equipment and pressure regulating method and computer program
  • Gas combustion turbine and its combined equipment and pressure regulating method and computer program
  • Gas combustion turbine and its combined equipment and pressure regulating method and computer program

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Embodiment Construction

[0046] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. Some of the components used in the following embodiments are well known to those skilled in the art.

[0047] figure 1 is a schematic block diagram showing a gas turbine employing steam cooling of dynamic and static blades according to a first embodiment of the present invention. figure 2 It is a partial sectional view of the gas turbine according to the first embodiment of the present invention. The gas turbine is characterized in that the cooling vapor pressure at the inlets of the dynamic and static blades is maintained at a level higher than the chamber pressure. In addition to dynamic and static blades, the high-temperature parts of the gas turbine also include combustor tailpipes, turbine main shafts or rotating disks, but when the present invention is applied to cooling d...

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Abstract

A valve that adjusts a pressure of a cooling steam is arranged downstream of a dynamic blade and a stationary blade. This valve is controlled such that a cooling steam pressures in the dynamic blade and the stationary blade are maintained higher than a value obtained by adding a margin pressure to a casing air pressure in a casing.

Description

technical field [0001] The present invention relates to a gas turbine whose dynamic and static blades can be sufficiently cooled so that operational failures can be minimized. The invention also relates to a gas turbine combined device, a cooling steam pressure regulating method and a computer program capable of realizing the method on a computer. Background technique [0002] In order to improve the thermal efficiency of the gas turbine combined cycle, steam is now used instead of air as the cooling medium to cool high-temperature components such as dynamic and static blades in the gas turbine. Under standard conditions, the specific heat of constant-pressure dry steam is cp=1.86kJ / kgk, almost twice that of constant-pressure air, cp=1.00kJ / kgk. Therefore, the same mass of steam has a larger heat capacity than the same mass of air, which can improve the heat absorption effect. If wet steam is used as the cooling medium, the latent heat of evaporation of the moisture can al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D25/12F01K23/10F02C7/18
CPCF01K23/108Y02E20/16Y02E20/18F05D2270/301F05D2270/3015F02C7/185F05D2260/2322
Inventor 百武慎德藤田泰弘
Owner MITSUBISHI HEAVY IND LTD