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1304 条记录 (耗时 0.031 秒)

    LEAK DETECTORS
    2.
    发明公开
    LEAK DETECTORS 审中-公开

    公开(公告)号：US20240310234A1

    公开(公告)日：2024-09-19

    申请号：US18578121

    申请日：2022-06-01

    申请人： INFICON GmbH

    发明人： Silvio Decker ,  Simon Mathioudakis ,  Randolf Paul Rolff

    IPC分类号： G01M3/26 ,  G01M3/20

    CPC分类号： G01M3/26 ,  G01M3/20

    摘要： A leak detection device for combined integral and localizing leak detection, comprising a test specimen port (14), a test specimen high vacuum pump (16), the inlet of which is connected with the test specimen port (14), at least one pre-vacuum pump (20), the inlet of which is connected via a test specimen line (18) with the outlet (19) of the test specimen high vacuum pump (16), and a gas detector (32) connected with the pre-vacuum pump (20), which is connected via at least a first gas line (28) with the test specimen high vacuum pump (16), the test specimen line (18) and/or the specimen port (14) such that gas from the test specimen port (14) is supplied to the gas detector (32) via the gas line (28) for gas analysis, characterized in that a gas pressure measuring volume (22) connected with a gas pressure sensor is configured in the test specimen line (18) such that, during the gas measurement with the gas detector (32), an integral leak detection can be carried out by measuring the pressure profile in the gas pressure measuring volume (22).

    Oil filter-leak pressure-test station
    3.
    发明授权
    Oil filter-leak pressure-test station 有权

    公开(公告)号：US12066356B2

    公开(公告)日：2024-08-20

    申请号：US17472500

    申请日：2021-09-10

    申请人： Joel Valles ,  Steve Williams ,  Jonathan Richard Fiello

    发明人： Joel Valles ,  Steve Williams ,  Jonathan Richard Fiello

    IPC分类号： G01M3/02 ,  G01M3/26

    CPC分类号： G01M3/26 ,  G01M3/025

    摘要： An apparatus and a method are provided for an oil filter-leak pressure-test station. The oil filter-leak pressure-test station comprises an air pump, a pressure gauge, a vent valve, an overflow reservoir, and a manifold configured to receive an oil filter. The oil filter-leak pressure-test station is configured to apply a desired internal air pressure to an oil filter for observing the oil filter assembly for any potential leaks, such as along a seal ring, rolled seam or a nut-end. The oil filter-leak pressure-test station is also configured to be mounted in a vise or similar mechanical attachment for observation to determine the extent or existence of any leak in the oil filter. The oil filter-leak pressure-test station may also be submerged in water using a submersion reservoir, so as to determine the existence and location of any leaks.

    Method of detecting a leak in a hydraulic pitch system
    5.
    发明授权
    Method of detecting a leak in a hydraulic pitch system 有权

    公开(公告)号：US12038352B2

    公开(公告)日：2024-07-16

    申请号：US17610232

    申请日：2020-04-24

    申请人： Siemens Gamesa Renewable Energy A/S

    发明人： Austin Cherry ,  Dennon Fortner ,  Keld Fyhn Andersen ,  Carsten Dalager Bolvig ,  Kevin Evans ,  Dan Frederiksen

    IPC分类号： G01M3/26

    CPC分类号： G01M3/26

    摘要： Provided is a method of detecting a leak in a hydraulic cylinder of a rotor blade pitch system of a wind turbine including a plurality of rotor blades, which method includes the steps of selecting one of the pitch systems to undergo a functionality test; actuating a fluid pump to move the pistons of the hydraulic cylinders of the pitch systems to their outermost positions; monitoring the hydraulic cylinder pressure levels of the non-selected pitch systems while performing the functionality test on the selected pitch system; and analyzing the monitored hydraulic cylinder pressure levels of the pitch systems to detect a drop in pressure in a pitch cylinder of a non-selected pitch system. A leak detection arrangement of a pitch-controlled wind turbine; and a pitch-controlled wind turbine are also provided.

    Leak detection for pressurized fluid systems
    6.
    发明授权
    Leak detection for pressurized fluid systems 有权

    公开(公告)号：US12000758B2

    公开(公告)日：2024-06-04

    申请号：US17343705

    申请日：2021-06-09

    申请人： Pratt & Whitney Canada Corp.

    发明人： Antwan Shenouda

    IPC分类号： G01M3/26 ,  B64D37/32

    CPC分类号： G01M3/26 ,  B64D37/32

    摘要： In accordance with at least one aspect of this disclosure, a fluid system of an aircraft includes a primary fluid conduit that conveys a primary fluid, and a leak detection system disposed around at least a portion of the primary fluid conduit and forming one or more detection volumes. The leak detection system determines whether there is a primary fluid leak into the one or more detection volumes by sensing a pressure change in the one or more detection volumes.

    Portable Self-Contained Pressure Testing Manifold and Associated Methods
    8.
    发明公开
    Portable Self-Contained Pressure Testing Manifold and Associated Methods 审中-公开

    公开(公告)号：US20240142333A1

    公开(公告)日：2024-05-02

    申请号：US18410915

    申请日：2024-01-11

    申请人： Fermi Research Alliance, LLC

    发明人： Roger A Milholland

    IPC分类号： G01M3/26

    CPC分类号： G01M3/26

    摘要： A portable, case-enclosed pressure test manifold, configured to support both pneumatic and hydrostatic pressure testing, and comprising a downstream fluid path (e.g., a system test gauge, a ball valve, a system test port, a system relief valve, and other components/piping) and an upstream fluid path (e.g., a low-pressure gauge, a high-pressure gauge, and various other components/piping). A regulator and/or the ball valve selectively operate the downstream fluid path, defining a hydrostatic pressure testing path, to receive a liquid; and the upstream fluid path in combination with the downstream fluid path, defining a pneumatic pressure testing path, to receive a gas. Manifold components are pressure rated based on use and are ASME Code B31.3 compliant. Properly rated flexible hoses connect with either of the pneumatic or the hydrostatic pressure testing paths of the manifold. The case includes parking receptables and a carrying handle configured to stow the hose during transport.

    Leak diagnosis method and leak diagnosis device for blowby gas treatment device of internal combustion engine
    9.
    发明授权
    Leak diagnosis method and leak diagnosis device for blowby gas treatment device of internal combustion engine 有权

    公开(公告)号：US11971327B2

    公开(公告)日：2024-04-30

    申请号：US17632328

    申请日：2020-06-02

    申请人： NISSAN MOTOR CO., LTD.

    发明人： Toshihiro Yamagata ,  Akihito Takahashi ,  Shimpei Yamashita

    IPC分类号： G01M3/26 ,  F01M13/02 ,  G01M3/02

    CPC分类号： G01M3/025 ,  F01M13/028 ,  G01M3/26 ,  F01M2250/00

    摘要： A blowby gas treatment device includes a pressure control valve, a fresh air induction pipe, a first blowby gas pipe, a second blowby gas pipe, a shutoff valve, a one-way valve, and a PCV valve. A leak diagnosis includes a first-stage diagnosis to determine whether or not falling of a pressure in a crank case after closing of the shutoff valve under a non-supercharging condition is normal. A second-stage diagnosis is implemented by using an air fuel ratio feedback control, and determining whether or not a sensed intake air quantity obtained by an air flow meter is equal to an actual intake air quantity flowing into a cylinder set. When the sensed intake air quantity is equal to the actual intake air quantity, presence of an in-system leak is determined, and when the actual intake air quantity is larger, presence of an out-of-system leak is determined.

    Display assemblies with differential pressure sensors
    10.
    发明授权
    Display assemblies with differential pressure sensors 有权

    公开(公告)号：US11965804B2

    公开(公告)日：2024-04-23

    申请号：US18091774

    申请日：2022-12-30

    申请人： Manufacturing Resources International, Inc.

    发明人： William Dunn ,  Mike Brown ,  Douglas Bennett ,  Kevin O'Connor ,  Alex Moreau

    IPC分类号： G01M3/26

    CPC分类号： G01M3/26

    摘要： Systems and methods for detecting and alerting to likely leaks in an electronic display assembly are provided. An electronic display assembly includes an electronic display, a testing area, and a differential pressure sensor fluidly connected to ambient air in an ambient environment and gas within the testing area. A controller determines one or more differential pressure readings based on data received from the differential pressure sensor, and generates and transmits an electronic notification where the differential pressure readings are below a predetermined threshold.