Device for detecting and eliminating separation vibrations on compressor blades
Номер патента: DE3605958A1
Опубликовано: 03-09-1987
Автор(ы): Abolhassan Dr Ing Ghiladi, Fridolin Prof Dr Mechel, Jakob Prof Dr Ing Wachter
Принадлежит: Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Опубликовано: 03-09-1987
Автор(ы): Abolhassan Dr Ing Ghiladi, Fridolin Prof Dr Mechel, Jakob Prof Dr Ing Wachter
Принадлежит: Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Реферат: In order to be able with the aid of simple means to detect accurately the start of so-called surging and to initiate counter measures in good time, use is made of a sound pressure transducer, which is inserted into the conveyor channel (5a, 7a) and is fastened to a channel wall in a manner insulated against structure-borne noise, as a sensor for detecting the operating state of the compressor giving rise to surging. Said transducer is preferably in the form of a microphone suitable for picking up acoustic frequencies in the conveyor fluid in the range from approximately 0.1 Hz to 1,000 Hz in conjunction with sound pressure levels of 80 dB to approximately 160 dB. The sound pressure transducer is connected to a sound discriminator (12) which controls the speed-regulated drive motor (11) of the compressor, or controls a bypass valve (8) for the mass flow conveyed by the compressor. <IMAGE>
Deposit detection device for exhaust pump and exhaust pump
Номер патента: US09777612B2. Автор: Yoshihiro Enomoto. Владелец: Edwards Japan Ltd. Дата публикации: 2017-10-03.