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公开(公告)号：CA2482417C
公开(公告)日：2011-04-05
申请号：CA2482417
申请日：2003-04-10
Applicant: NAT OILWELL NORWAY AS
Inventor： KYLLINGSTAD AGE
Abstract: A method of and device for detecting a leak in reciprocating machinery (1), comprising at least two pistons (2, 2'), by the volume flow at least out of the reciprocating machinery (1) being monitored and analysed, e.g. by means of Fourier analysis, in order to make it possible to detect a flow component, where the flow component has a frequency that differs from the fundamental frequency of the reciprocating machinery, the fundamental frequency of thereciprocating machinery being constituted by the rotational frequency of the reciprocating machinery multiplied by the number of pistons (2, 2') in the reciprocating machinery.
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公开(公告)号：NO328800B1
公开(公告)日：2010-05-18
申请号：NO20072236
申请日：2007-04-30
Applicant: NAT OILWELL NORWAY AS
Inventor： KYLLINGSTAD AGE
Abstract: A machine includes at least one piston and a pump shaft. A method for detecting a leak in the machine includes receiving a vibration signal from a vibration sensor disposed on at least one of an upstream pipe and a downstream pipe of the machine, receiving a rotational speed signal and an angular shaft position signal from a speed and position sensor disposed on the machine, calculating a rotational speed and an angular shaft position of the pump shaft, calculating at least one complex harmonic Fourier amplitude of the received vibration signal, low pass filtering the at least one complex harmonic Fourier amplitude, calculating a deviation amplitude as a magnitude of a complex difference between the filtered amplitude and a base amplitude, and monitoring the deviation amplitude to detect a leakage.
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公开(公告)号：NO20074261A
公开(公告)日：2009-02-23
申请号：NO20074261
申请日：2007-08-21
Applicant: NAT OILWELL NORWAY AS
Inventor： KYLLINGSTAD AGE
CPC classification number: G01M3/26 , F04B51/00 , F04B2201/0208 , F04B2201/0605 , F04B2201/0803
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公开(公告)号：NO20072236L
公开(公告)日：2008-10-31
申请号：NO20072236
申请日：2007-04-30
Applicant: NAT OILWELL NORWAY AS
Inventor： KYLLINGSTAD AGE
Abstract: A machine includes at least one piston and a pump shaft. A method for detecting a leak in the machine includes receiving a vibration signal from a vibration sensor disposed on at least one of an upstream pipe and a downstream pipe of the machine, receiving a rotational speed signal and an angular shaft position signal from a speed and position sensor disposed on the machine, calculating a rotational speed and an angular shaft position of the pump shaft, calculating at least one complex harmonic Fourier amplitude of the received vibration signal, low pass filtering the at least one complex harmonic Fourier amplitude, calculating a deviation amplitude as a magnitude of a complex difference between the filtered amplitude and a base amplitude, and monitoring the deviation amplitude to detect a leakage.
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公开(公告)号：NO20072230A
公开(公告)日：2008-10-31
申请号：NO20072230
申请日：2007-04-30
Applicant: NAT OILWELL NORWAY AS
Inventor： KYLLINGSTAD AGE
CPC classification number: G01M3/24 , F04B51/00 , F04B2201/0802 , F04B2201/1201 , G01M13/028 , G01M15/12
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Patent Agency Ranking
公开(公告)号：DK1485618T3
公开(公告)日：2007-01-08
申请号：DK03715863
申请日：2003-03-18
Applicant: NAT OILWELL NORWAY AS
Inventor： MOE MAGNE MATHIAS , KYLLINGSTAD AGE
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公开(公告)号：AT340308T
公开(公告)日：2006-10-15
申请号：AT03715863
申请日：2003-03-18
Applicant: NAT OILWELL NORWAY AS
Inventor： MOE MAGNE MATHIAS , KYLLINGSTAD AGE
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公开(公告)号：EA006123B1
公开(公告)日：2005-10-27
申请号：EA200401186
申请日：2003-03-18
Applicant: NAT OILWELL NORWAY AS
Inventor： MOE MAGNE , KYLLINGSTAD AGE
Abstract: Клапанноеустройство (1) дляпоршневоймашины, содержащеевпускнойклапан (18) ивыпускнойклапан (19), причемкаждыйклапан (18, 19) являетсяподпружиненнымклапаномодностороннегодействия, выполненнымс возможностьюоткрытиядляпотокаприсозданииразностьюдавленияв направлениипотокаусилия, превышающегонапряжениепружины, приэтомклапаны (18, 19) установленыв корпусе (8), которыйобразуеткрышкуцилиндрапоршневоймашины (2) илиприкрепленк указаннойкрышке. Впускнойклапан (18) ивыпускнойклапан (19) смонтированывовтулке (16), выполненнойс возможностьюустановкив проточке (9) корпуса (8) такимобразом, чтотекучаясредаспособнапоступатьк втулке (16) извпускногоканала (11) вкорпусе (8) ипротекатьвовтулку (16) черезвпускнойклапан (18), приэтомвтулка (16) имеетпоменьшеймереодинперфорированныйучасток, обеспечивающийпротеканиятекучейсредыв радиальномнаправленииизвтулки (16) иливовтулку (16) черезотверстия (50, 51), темсамымеепротеканиек проходу (14, 15) илиизуказанногопрохода, которыйобразуетперпендикулярныйилиблизкийк перпендикулярномуканалсообщенияс проточкой (9).
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公开(公告)号：NO20051916D0
公开(公告)日：2005-04-20
申请号：NO20051916
申请日：2005-04-20
Applicant: NAT OILWELL NORWAY AS
Inventor： KYLLINGSTAD AGE
IPC: F04B51/00 , F17C20060101 , G01M3/02 , F17C
Abstract: A method of determining a leakage in a piston machine comprising at least two pistons is provided. The rotational velocity of the piston machine, and therefore the volume flow through the piston machine, is varied periodically as part of a time-limited active test while measuring the differential pressure and the angular position. An angular position-based Fourier analysis of the measured values from differential pressure and rotational velocity measurements performed during the test are used to experimentally determine the amplitude ratio and phase angle difference between volume flow variations and pressure variations. The amplitude ratio and phase angle difference are used, together with an angular position-based Fourier analysis of the measurements of differential pressure and rotational speed made after the active test, to determine the amplitude and phase of the leakage flow.
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公开(公告)号：AU2003219620A1
公开(公告)日：2003-10-08
申请号：AU2003219620
申请日：2003-03-18
Applicant: NAT OILWELL NORWAY AS
Inventor： MOE MAGNE , KYLLINGSTAD AGE
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