[특허]Control of steam temperature in combined cycle power plant

Control of steam temperature in combined cycle power plant 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F01K-023/10 F02C-006/18
출원번호	US-0487730 (2012-06-04)
등록번호	US-9328633 (2016-05-03)
발명자 / 주소	Petzen, John
출원인 / 주소	General Electric Company
대리인 / 주소	Sutherland Asbill & Brennal LLP
인용정보	피인용 횟수 : 0 인용 특허 : 118

초록 ▼

A combined cycle power plant may include a gas turbine comprising a feed forward signal generator and configured to operate in one of one or more firing modes and generate exhaust gas and a heat recovery steam generator configured to receive the exhaust gas and extract thermal energy from the exhaust gas to generate steam. The feed forward signal generator may be configured to generate a feed forward signal that is used to control the temperature of the steam generated by the heat recovery steam generator.

대표청구항 ▼

1. An apparatus, comprising: at least one timer, each timer corresponding with a respective firing mode of a gas turbine and configured to generate a timing signal when the corresponding respective firing mode is active;at least one interpolation block, each interpolation block corresponding to each of the at least one timer and configured to generate an output signal when the corresponding respective firing mode is active; and,a summation block receiving the output signal of each of the interpolation blocks and configured to generate a feed forward control signal that controls water injection rate of an attemperator. 2. The apparatus of claim 1, wherein the at least one timer are count-up timer. 3. The apparatus of claim 1, wherein the at least one timer is configured to reset when the corresponding respective firing mode is inactive. 4. The apparatus of claim 1, wherein the at least one interpolation block is configured to receive the timing signal from the corresponding respective timer. 5. The apparatus of claim 1, wherein generating an output signal further comprises receiving at least one signal associated with the active firing mode. 6. The apparatus of claim 1, wherein the output signal of each interpolation block is indicative of a change in steam temperature from a heat recovery steam generator when the corresponding respective firing mode is active. 7. The apparatus of claim 1, wherein the feed forward signal is an inverse of a change in a steam temperature from a heat recovery steam generator resulting from a change in a firing mode of the gas turbine. 8. The apparatus of claim 7, wherein the feed forward signal is provided to an attemperator controller. 9. A combined cycle power plant, comprising: a gas turbine configured to operate in one of one or more firing modes and generate exhaust gas that is used for generating steam, the gas turbine including a feed forward signal generator configured to generate at least one feed forward signal that is predictive of an expected steam temperature discontinuity due to a change in a firing mode of the gas turbine, the expected steam temperature discontinuity defined at least in part on the basis of stored data from permutations of firing mode changes, wherein the feed forward signal generator comprises one or more timers, each timer corresponding to a set of lit combustors in the gas turbine; anda heat recovery steam generator configured to receive the exhaust gas and extract thermal energy from the exhaust gas to generate steam, the heat recovery steam generator further configured to use the feed forward signal that is used to control the temperature of the steam generated by the heat recovery steam generator. 10. The combined cycle power plant of claim 9, wherein the feed forward signal generator comprises: each timer corresponding with one of the one or more firing modes of the gas turbine and configured to generate a timing signal when the corresponding respective firing mode is active;at least one interpolation block, each interpolation block corresponding to each of the at least one timers and configured to generate an output signal when the corresponding respective firing mode is active; anda summation block receiving the output signal of each of the interpolation blocks and configured to generate the at least one feed forward control signal. 11. The combined cycle power plant of claim 9, wherein controlling the attemperation of the heat recovery steam generator comprises spraying water into a counter flowing heat exchanger. 12. The combined cycle power plant of claim 9, wherein the feed forward signal is an inverse of a change in a steam temperature from a heat recovery steam generator resulting from a change in the one or more firing modes of the gas turbine. 13. The combined cycle power plant of claim 9, wherein the at least one feed forward signal is configured to be sensed at the heat recovery steam generator before a gas turbine exhaust corresponding to the expected steam temperature discontinuity arrives at the heat recovery steam generator. 14. The combined cycle power plant of claim 9, wherein the at least one feed forward signal is configured to arrive at the heat recovery steam generator before a gas turbine exhaust, the gas turbine exhaust arriving at the heat recovery steam generator with a time lag corresponding to a thermal lag in the heat recovery steam generator.

이 특허에 인용된 특허 (118)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
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Control of steam temperature in combined cycle power plant 원문보기

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Control of steam temperature in combined cycle power plant 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

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이 특허에 인용된 특허 (118)

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