Method and apparatus for monitoring a fluid conduit system for leaks
Номер патента: CA2008727A1
Опубликовано: 18-08-1990
Автор(ы): Bjarne Straede, Jens J. Molbaek, Poul E. Hyldig, Theiss Stenstrom
Принадлежит: Danfoss AS
Опубликовано: 18-08-1990
Автор(ы): Bjarne Straede, Jens J. Molbaek, Poul E. Hyldig, Theiss Stenstrom
Принадлежит: Danfoss AS
Реферат: ABSTRACT A method and apparatus are proposed for monitoring a fluid conduit system for leaks. To detect a leakage flow of less than 25 1/h, after closing a main valve (4), the time is measured that is taken by the pressure in the conduit system (12, 13) to drop to a predetermined first value. On reaching this value, a shunt valve (6) is opened and the time is measured that is required by the pressure to rise to a second predetermined value. The leakage flow is calculated from the two times and the two pres-sures together with known constants for the conduit system. Fig. 1
Method and apparatus for correcting heliostat
Номер патента: US20110094499A1. Автор: Makoto Kounosu. Владелец: Mitsui Engineering and Shipbuilding Co Ltd. Дата публикации: 2011-04-28.