公开(公告)号：US11768099B2

公开(公告)日：2023-09-26

申请号：US17433925

申请日：2020-02-04

申请人： PVTE COMPANY LIMITED

发明人： Tanunt Leelayoova ,  Uracha Poopakdee

IPC分类号： G01F25/10

CPC分类号： G01F25/14

摘要： A calibration method for a liquid flowmeter comprising: providing a first tank (12) for receiving said liquid to be measured and a liquid storage tank (14) connected to said first tank (12); providing a liquid delivering line (9) for conveying the liquid from said liquid storage tank (14) to an external device; providing a weighing sensor (22) for weighing the liquid contained in either the first tank (12) or the liquid storage tank (14), wherein during performing the calibration for the flowmeter (20): disconnecting the liquid delivering line (9) in a conveyance direction downstream of the liquid flowmeter (20) from the external device; connecting said liquid delivering line (9) in the conveyance direction downstream of said liquid flowmeter (20) to a calibrating line (7) connected to said first tank (12); and determining a flow rate of the conveyed liquid within a predetermined time interval based on the change in the liquid weight measured by said weighing sensor (22) in said predetermined time interval, wherein the liquid from said liquid storage tank (14) is delivered through the liquid delivering line back to said first tank (12), and the flow rate of the liquid from the liquid storage tank (14) to said first tank (12) is controlled so as to be substantially constant during calibration.

公开(公告)号：US11885663B2

公开(公告)日：2024-01-30

申请号：US17645780

申请日：2021-12-23

申请人： Endress+Hauser Flowtec AG

发明人： Kyle Shipps ,  Jerry E. Stevens

IPC分类号： G01F25/10 ,  G01F1/84 ,  G01F15/00

CPC分类号： G01F25/14 ,  G01F1/84 ,  G01F15/005

摘要： A calibration system and methods for flow metering technologies integrates a known primary reference standard (e.g., a gravimetric scale), configured to determine a mass of calibration fluid, in parallel with surrogate secondary masters (e.g., Coriolis effect flowmeters) connected via an adjustable flowpath having a closed loop mode, including a meter bank, a pump and a measuring section, and an open loop mode, including a reservoir, the meter bank, the pump, the measuring section and the primary reference standard, which enables calibration duality and redundant meter under test confirmation of calibration factors. The disclosed systems and methods enable life cycle assurance of the primary reference standard and the secondary masters' standard reliability and reproducibility over time and, as a redundant system, enable calibration of multiple flow metering technologies, such as, for example, volumetric, mass, density, viscosity and Reynolds number-reliant technologies, in one homogenous system.

公开(公告)号：US20230341254A1

公开(公告)日：2023-10-26

申请号：US18002405

申请日：2021-08-27

申请人： Xi'an Aerospace Propulsion Test Technology Institute

发明人： Binyun TANG ,  Yu CHEN ,  Ming HAN ,  Hongpeng XU ,  Li GUO ,  Jibin SHEN ,  Qiang GAO ,  Yan GAO

IPC分类号： G01F25/10 ,  F17C13/00

CPC分类号： G01F25/14 ,  F17C13/001

摘要： A cryogenic propellant rocket engine, a flowmeter calibration system and method for the cryogenic propellant rocket engine have been provided. The flowmeter calibration system for the cryogenic propellant rocket engine includes a container filling unit, a container, a supply pipeline, a weighing unit, a quick recovery container, a weighing and filling recovery unit and a recovery unit which are sequentially connected; the container filling unit is configured to connect a tank wagon with the container; and the supply pipeline includes a temperature sensor and a pressure sensor, as well as a first isolation valve, a reference flowmeter, a calibration flow adjusting manual valve, a vertical main pipe and N circumferentially and uniformly distributed horizontal pipes which are sequentially connected by a pipeline.

公开(公告)号：US20240102844A1

公开(公告)日：2024-03-28

申请号：US18530833

申请日：2023-12-06

申请人： Endress+Hauser Flowtec AG

发明人： Kyle Shipps ,  Jerry E. Stevens

IPC分类号： G01F25/10 ,  G01F1/84 ,  G01F15/00

CPC分类号： G01F25/14 ,  G01F1/84 ,  G01F15/005

摘要： A calibration system and methods for flow metering technologies integrates a known primary reference standard (e.g., a gravimetric scale), configured to determine a mass of calibration fluid, in parallel with surrogate secondary masters (e.g., Coriolis effect flowmeters) connected via an adjustable flowpath having a closed loop mode, including a meter bank, a pump and a measuring section, and an open loop mode, including a reservoir, the meter bank, the pump, the measuring section and the primary reference standard, which enables calibration duality and redundant meter under test confirmation of calibration factors. The disclosed systems and methods enable life cycle assurance of the primary reference standard and the secondary masters' standard reliability and reproducibility over time and, as a redundant system, enable calibration of multiple flow metering technologies, such as, for example, volumetric, mass, density, viscosity and Reynolds number-reliant technologies, in one homogenous system.

公开(公告)号：US11885658B2

公开(公告)日：2024-01-30

申请号：US17297927

申请日：2018-12-17

申请人： MICRO MOTION, INC.

发明人： Marc Allan Buttler

IPC分类号： G01F1/84 ,  G01F25/10

CPC分类号： G01F1/84 ,  G01F25/14

摘要： A method of converting a directly measured mass flow rate to account for buoyancy is provided. The method includes directly measuring a mass flow rate of a material, measuring a density of the material, and using the measured density of the material to convert the directly measured mass flow rate into a mass value including a buoyancy of a fluid.