JPS5638503A - Erosion preventing apparatus for turbine blade - Google Patents

Erosion preventing apparatus for turbine blade

Info

Publication number
JPS5638503A
JPS5638503A JP11427679A JP11427679A JPS5638503A JP S5638503 A JPS5638503 A JP S5638503A JP 11427679 A JP11427679 A JP 11427679A JP 11427679 A JP11427679 A JP 11427679A JP S5638503 A JPS5638503 A JP S5638503A
Authority
JP
Japan
Prior art keywords
turbine
steam
pressure
erosion
generator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP11427679A
Other languages
Japanese (ja)
Inventor
Hiroshi Matsumoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP11427679A priority Critical patent/JPS5638503A/en
Publication of JPS5638503A publication Critical patent/JPS5638503A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
    • F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
    • F01K23/101—Regulating means specially adapted therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]

Abstract

PURPOSE: To prevent the erosion of turbine blades, especially, the last stage blade of a steam turbine in a combined-cycle plant by transitionally lowering the pressure before the governing valve of the turbine according to the humidity to control the rise of the humidity.
CONSTITUTION: A combined-cycle plant comprises a gas turbine 2 driving the first generator 1, a waste heat boiler 4 leading exhaust gas 3 from the turbine 2 to generate steam, and a steam turbine 6 driving the second generator 5 using the steam from the boiler 4. To this, an erosion preventing apparatus is added as shown by broken lines. The apparatus has a pressure bias signal generator 100 that receives a signal 26 of the pressure before a governing valve and a signal of the pressure in a condenser which are values obtained by pressure detectors 25 and 40 respectively, a main steam temperature signal 42 by a temperature detector 39, and the main steam flow rate 44 by a flow detector 41. The output 45 from the pressure bias signal generator is reverse-biased to a subtracter 28 to control the regulating valve 22 so that the erosion of the turbine blades is prevented.
COPYRIGHT: (C)1981,JPO&Japio
JP11427679A 1979-09-07 1979-09-07 Erosion preventing apparatus for turbine blade Pending JPS5638503A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11427679A JPS5638503A (en) 1979-09-07 1979-09-07 Erosion preventing apparatus for turbine blade

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11427679A JPS5638503A (en) 1979-09-07 1979-09-07 Erosion preventing apparatus for turbine blade

Publications (1)

Publication Number Publication Date
JPS5638503A true JPS5638503A (en) 1981-04-13

Family

ID=14633766

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11427679A Pending JPS5638503A (en) 1979-09-07 1979-09-07 Erosion preventing apparatus for turbine blade

Country Status (1)

Country Link
JP (1) JPS5638503A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001046567A1 (en) * 1999-12-21 2001-06-28 Mitsubishi Heavy Industries, Ltd. Gas turbine controller of single-shaft combined cycle power generating plant and gas turbine output calculating method
JP2014112000A (en) * 2012-12-05 2014-06-19 Tlv Co Ltd Gas-liquid separator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001046567A1 (en) * 1999-12-21 2001-06-28 Mitsubishi Heavy Industries, Ltd. Gas turbine controller of single-shaft combined cycle power generating plant and gas turbine output calculating method
US6477842B1 (en) 1999-12-21 2002-11-12 Mitsubishi Heavy Industries, Ltd. Gas turbine controller of single-shaft combined cycle power generating plant and gas turbine output calculating method
JP2014112000A (en) * 2012-12-05 2014-06-19 Tlv Co Ltd Gas-liquid separator

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