[특허]Radial gap measurement on turbines

Radial gap measurement on turbines 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01S-013/08
출원번호	US-0309328 (2007-07-19)
등록번호	US7889119 (2011-02-02)
우선권정보	DE-2006-0 2006 033 461(2006-07-19)
국제출원번호	PCT/EP2007/057465 (2007-07-19)
§371/§102 date	20090113 (20090113)
국제공개번호	WO08/009717 (2008-01-24)
발명자 / 주소	Evers, Daniel Ziroff, Andreas
출원인 / 주소	Siemens Aktiengesellschaft
인용정보	피인용 횟수 : 13 인용 특허 : 23

초록 ▼

Radial gap measurement on turbines by a microwave measuring method and an evaluation of a Doppler effect which varies according to the size of the radial gap is described. At least one radar sensor embodied as a transmission and reception unit is provided in the wall of a turbine housing which is radially oriented towards the centre of the turbine. The relative speed of an outer end of a turbine blade, dependent on the size of the radial gap, is evaluated many times in relation to the radar sensor during the passage of the blade end past the same, and the course of the relative speed over time on the zero crossing constitutes a measure for the radial gap on the basis of the relation between the absolute value of the relative speed and the incline thereof in the zero crossing.

대표청구항 ▼

The invention claimed is: 1. A microwave measurement method of radial gap measurement on turbines and an evaluation of a Doppler effect which varies with the size of a radial gap of a turbine, with a radar sensor embodied as a transmission and reception unit provided in a wall of a turbine housing which is radially oriented towards the center of the turbine, comprising:evaluating a relative speed of an outer end of a turbine blade dependent on the size of the radial gap in relation to the radar sensor during the passage of the blade end past the radar sensor; andconstituting, by the course of the relative speed over time on zero crossing, a measure for the radial gap based upon the relation between an absolute value of the relative speed and the incline thereof in the zero crossing.

이 특허에 인용된 특허 (23)

Loftus, Peter; Parrish, Colin J, Analyzing vibration of rotating blades.
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Mossey Paul W. (Greenhills OH), Apparatus and method for optical clearance determination.
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Oates Robert M. (Murrysville PA) Petronio Carlo F. (Ross Township PA) Kraus Mark G. (Churchill Boro PA), Apparatus for monitoring housed turbine blading to obtain blading-to-housing distance.
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Marchetti, Sergio, Apparatus for temporarily immersing articles in a hot-water bath.
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Bosselmann,Thomas; Willsch,Michael; Perez,Francisco Javier Sevilla; Sanjana,Zal, Doppler radar sensing system for monitoring turbine generator components.
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Bosselmann,Thomas; Willsch,Michael; Perez,Francisco Javier Sevilla; Sanjana,Zal, Doppler radar sensing system for monitoring turbine generator components.
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Billington, Scott Alexander; Geisheimer, Jonathan Lee, Method and system for calibration of a phase-based sensing system.
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Bosselmann,Thomas; Eiermann,Franz; Huber,Klaus; Willsch,Michael, Method for determination of the stress on blades of a turbine machine during operation and corresponding device for carrying out said method.
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Teolis,Carole; Teolis,Anthony, Method of determining the operating status of a turbine engine utilizing an analytic representation of sensor data.
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Halek,James Michael; Harris,Philip Aaron; Thompson,Richard; Ferri,Robert; Squires,Jonathan, Microwave demulsification of hydrocarbon emulsion.
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Sasaki Kunihiko (Nukata JPX) Kodera Masao (Okazaki JPX) Huzino Seizi (Anjo JPX) Tanaka Takeshi (Toyohashi JPX), Microwave probe and rotary body detecting apparatus using the same.
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Grzybowski Richard R. ; Meltz Gerald, Microwave recess distance and air-path clearance sensor.
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Twerdochlib Michael (Oviedo FL) Beeson Robert J. (Oviedo FL) Bateman David E. (Geneva FL) Rozelle Paul F. (Fern Park FL) DeMartini John F. (Lake Mary FL), Microwave system for monitoring turbine blade vibration.
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Gray ; Kenneth W., Miniature doppler radar systems and microwave receivers suitable therefor.
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Keating John E. (Upper Derby PA), Narrow beam radar installation for turbine monitoring.
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Geisheimer,Jonathan; Holst,Thomas, Peak detection and clutter reduction for a microwave sensor.
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Jonathan Geisheimer ; Gene Greneker ; Scott Billington, Phase-based sensing system.
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Baker, Peter D., Proximity sensing.
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Boris Karpman ; John L. Shade ; Daniel E. Kane, System and method of controlling clearance between turbine engine blades and case based on engine components thermal growth model.
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Leogrande,John A.; Jalbert,Peter L.; Wood,C. Bruce; Schryver,Matthew J., Systems and methods for monitoring thermal growth and controlling clearances, and maintaining health of turbo machinery applications.
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Bannister Ronald L. (Westtown PA) Beatty John M. (Aston PA), Turbine blade vibration detection apparatus.
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Daniel Edward Mollmann, Vibration sensing in gas turbine engine.
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Bosche,John Vanden, Wind turbine blade deflection control system.
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이 특허를 인용한 특허 (13)

Hochreutiner, Olivier; Geisheimer, Jonathan; Holst, Thomas; Queloz, Sylvain; Kwapisz, David; Naid-Abdellah, Rachid, Measurement of bladed rotors.
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Newman, John W., Method and apparatus for monitoring wind turbine blades during operation.
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Newman, John W., Method and apparatus for remote feature measurement in distorted images.
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Newman, John W., Nondestructive acoustic doppler testing of wind turbine blades from the ground during operation.
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Kidane, Getnet S.; Desilva, Upul P.; He, Chengli; Ulerich, Nancy H., Optical wear monitoring.
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Monks, Tim, Positioning device for an optical triangulation sensor.
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Peczalski, Andy; Lilly, David Daniel; Mylaraswamy, Dinkar, RF based tracker for rotating objects.
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Dvorkin, Vladimir, Radar system and method for providing information on movements of object's surface.
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Newman, John W., System and method for ground based inspection of wind turbine blades.
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Newman, John W., System and method for ground based inspection of wind turbine blades.
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Tralshawala, Nilesh; Faidi, Waseem Ibrahim, System and method for inspecting a wind turbine blade.
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Shepard, David John, Turbine blade monitoring.
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Singh, Ram Bahadur; Wasdell, David L.; Miller, Keith A, Wear pin gap closure detection system for gas turbine engine.
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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

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Radial gap measurement on turbines 원문보기