| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 101 | FLOW SENSOR | US14800492 | 2015-07-15 | US20170016752A1 | 2017-01-19 | Jamie Speldrich; Richard C. Sorenson |
| A flow sensor assembly includes a housing that defines an inlet port, an outlet port, a main channel and a bypass channel. An inlet flow channel fluidly connects the inlet port of the flow sensor assembly to the main channel and an outlet flow channel fluidly connects the main channel to the outlet port. A bypass feeder input channel fluidly connects the main channel to the bypass channel and a bypass feeder output channel fluidly connect the bypass channel to the main channel. In some instances, at least 40 percent of an input pressure differential applied between the inlet port and the outlet port of the flow sensor assembly drops across the inlet flow channel and the outlet flow channel collectively. A sensor is exposed to a fluid in the bypass channel and senses a measure related to a flow rate of the fluid flowing through the bypass channel. | ||||||
| 102 | FLOW RATE RANGE VARIABLE TYPE FLOW RATE CONTROL APPARATUS | US14626128 | 2015-02-19 | US20150160662A1 | 2015-06-11 | Tadahiro Ohmi; Masahito Saito; Shoichi Hino; Tsuyoshi Shimazu; Kazuyuki Miura; Kouji Nishino; Masaaki Nagase; Katsuyuki Sugita; Kaoru Hirata; Ryousuke Dohi; Takashi Hirose; Tsutomu Shinohara; Nobukazu Ikeda; Tomokazu Imai; Toshihide Yoshida; Hisashi Tanaka |
| A pressure type flow rate control apparatus is provided wherein flow rate of fluid passing through an orifice is computed as Qc=KP1 (where K is a proportionality constant) or as Qc=KP2m (P1−P2)n (where K is a proportionality constant, m and n constants) by using orifice upstream side pressure P1 and/or orifice downstream side pressure P2. A fluid passage between the downstream side of a control valve and a fluid supply pipe of the pressure type flow rate control apparatus comprises at least 2 fluid passages in parallel, and orifices having different flow rate characteristics are provided for each of these fluid passages, wherein fluid in a small flow quantity area flows to one orifice for flow control of fluid in the small flow quantity area, while fluid in a large flow quantity area flows to the other orifice for flow control of fluid in the large flow quantity area. | ||||||
| 103 | Flow rate range variable type flow rate control apparatus | US11913277 | 2006-06-22 | US08418714B2 | 2013-04-16 | Tadahiro Ohmi; Masahito Saito; Shoichi Hino; Tsuyoshi Shimazu; Kazuyuki Miura; Kouji Nishino; Masaaki Nagase; Katsuyuki Sugita; Kaoru Hirata; Ryousuke Dohi; Takashi Hirose; Tsutomu Shinohara; Nobukazu Ikeda; Tomokazu Imai; Toshihide Yoshida; Hisashi Tanaka |
| A pressure type flow rate control apparatus is provided wherein flow rate of fluid passing through an orifice is computed as Qc=KP1 (where K is a proportionality constant) or as Qc=KP2m(P1−P2)n (where K is a proportionality constant, m and n constants) by using orifice upstream side pressure P1 and/or orifice downstream side pressure P2. A fluid passage between the downstream side of a control valve and a fluid supply pipe of the pressure type flow rate control apparatus comprises at least 2 fluid passages in parallel, and orifices having different flow rate characteristics are provided for each of these fluid passages, wherein fluid in a small flow quantity area flows to one orifice for flow control of fluid in the small flow quantity area, while fluid in a large flow quantity area flows to the other orifice for flow control of fluid in the large flow quantity area. | ||||||
| 104 | Multi-gas flow device | US12578276 | 2009-10-13 | US08068999B2 | 2011-11-29 | Chiun Wang; John M. Lull; William S. Valentine |
| A system and method of characterizing or controlling a flow of a fluid is provided that involves a sensor conduit and a bypass. A plurality of fluids may be utilized in the flow control device based on characteristic information of the device generated during calibration thereof. The characteristic information, in turn is based on a dimensionless parameters, such as adjusted dynamic pressure and adjusted Reynolds number. | ||||||
| 105 | Multi-gas flow device | US12578296 | 2009-10-13 | US08010303B2 | 2011-08-30 | Chiun Wang; John M. Lull; William S. Valentine |
| A system and method of characterizing or controlling a flow of a fluid is provided that involves a sensor conduit and a bypass. A plurality of fluids may be utilized in the flow control device based on characteristic information of the device generated during calibration thereof. The characteristic information, in turn is based on a dimensionless parameters, such as adjusted dynamic pressure and adjusted Reynolds number. | ||||||
| 106 | MULTI-GAS FLOW DEVICE | US12578296 | 2009-10-13 | US20100070206A1 | 2010-03-18 | Chiun Wang; John M. Lull; William S. Valentine |
| A system and method of characterizing or controlling a flow of a fluid is provided that involves a sensor conduit and a bypass. A plurality of fluids may be utilized in the flow control device based on characteristic information of the device generated during calibration thereof. The characteristic information, in turn is based on a dimensionless parameters, such as adjusted dynamic pressure and adjusted Reynolds number. | ||||||
| 107 | Multi-gas flow device | US11850505 | 2007-09-05 | US07636640B2 | 2009-12-22 | Chiun Wang; John M. Lull; William S. Valentine |
| A system and method of characterizing or controlling a flow of a fluid is provided that involves a sensor conduit and a bypass. A plurality of fluids may be utilized in the flow control device based on characteristic information of the device generated during calibration thereof. The characteristic information, in turn is based on a dimensionless parameters, such as adjusted dynamic pressure and adjusted Reynolds number. | ||||||
| 108 | Particulate sampler and dilution gas flow device arrangement for an exhaust sampling system | US11546048 | 2006-10-11 | US07565846B2 | 2009-07-28 | William Martin Silvis; Gerald Marek; Wolfgang Schindler |
| An exhaust sampling system is provided that includes a sampler having a sample inlet for receiving an exhaust gas sample. The sampler includes a mixer for receiving the exhaust gas sample and a diluent to produce a diluted exhaust gas. The exhaust sampling system includes first and second dilution gas flow devices. The first and second dilution gas flow devices are fluidly connected to one another at a second junction. Any diluent provided by the first and second dilution gas flow devices intermingles with one another prior to reaching the mixer. A diluted sample flow meter is arranged downstream from the mixer for receiving the diluted exhaust gas. In one example, diluent flow from the first and second dilution gas flow devices intermingles before being introduced to the mixer. In another example, diluent flow from the first dilution gas flow device is leaked out of the second dilution gas flow device in a controlled manner to achieve a desired diluent flow into the mixer. The example exhaust sampling system does not require a measurement of the flow of exhaust gas sample into the system. Instead, the flow of the diluted exhaust gas is measured by the diluted sample flow meter. And, the flow of diluent through the first and second dilution flow meters is measured and the net flow through the first and second dilution flow meters is subtracted from the flow of the diluted exhaust gas through the diluted sample flow meter. | ||||||
| 109 | Fluid flow meter and mixer having removable and replacable displacement member | US11660021 | 2004-08-10 | US07500405B2 | 2009-03-10 | Floyd McCall |
| Fluid flow apparatus, such as a fluid flow meter, a fluid mixing device or a fluid dispersing device, includes a fluid displacement member removeably mounted in a conduit and a pipe or tube extending through the wall of the conduit and having a portion extending through the displacement member to its downstream face for sensing flow conditions at the axis of the conduit downstream of the displacement member. The displacement member is removeably and replaceably mounted on the pipe or tube so that one displacement member can be replaced by one or more displacement members and thereby accommodate a very broad range of flows of various fluids, fluid suspensions and slurries. | ||||||
| 110 | MULTI-GAS FLOW DEVICE | US11850505 | 2007-09-05 | US20080059084A1 | 2008-03-06 | Chiun Wang; John Lull; William Valentine |
| A system and method of characterizing or controlling a flow of a fluid is provided that involves a sensor conduit and a bypass. A plurality of fluids may be utilized in the flow control device based on characteristic information of the device generated during calibration thereof. The characteristic information, in turn is based on a dimensionless parameters, such as adjusted dynamic pressure and adjusted Reynolds number. | ||||||
| 111 | Fitting for hydraulic flow measurement | US09273108 | 1999-03-19 | US06349603B1 | 2002-02-26 | Fritz Spiess |
| A fitting for hydraulic flow measurement includes a fitting housing containing a principal flow duct, a throttle point arranged in the principal duct, a bypass duct for conducting a partial flow connected behind the throttle point to the principal duct, and a flow measuring device with a movable measuring and indicating member for the partial flow. The fitting housing includes a side pipe piece forming a side chamber, wherein the side chamber is directly connected to the principal duct in front of and behind the throttle point in the housing interior. The flow measuring device provided with a measuring part and an indicating part is held in the side pipe piece by single hole mounting and closes off the side chamber to the outside, wherein the indicating part is located outside of the side pipe piece and only the measuring part is acted upon by the partial flow. | ||||||
| 112 | Flowmeter | US752318 | 1996-11-19 | US5763791A | 1998-06-09 | Ali Shambayati |
| A fluid flowmeter comprises a frame having a cavity that is open to one side thereof for the acceptance of a laminar flow module and open to the other side for the acceptance of sensing electronics that measure pressure drop across the module. The module comprises a plurality of plates that are spaced apart by wires and bound to one another to form a unitary assembly that facilitates exchange and replacement. | ||||||
| 113 | Volumetric flow corrector having a densitometer | US48349 | 1993-04-14 | US5357809A | 1994-10-25 | William H. Vander Heyden |
| A method an apparatus for measuring a base condition volumetric flowrate of a pipeline gas flowing through a pipeline in which a pipeline gas flowrate is measured by a pipeline gas flowmeter; a volumetric correction ratio is derived by: measuring a sample gas flowrate of sample gas tapped from the pipeline, measuring an energy flowrate of the sample gas, measuring a heating value of the sample gas, and measuing a base condition density of the sample gas; and the base condition volumetric flowrate of the pipeline gas flowing through the pipeline is determined by adjusting the pipeline gas flowrate as measured by the pipeline gas flowmeter by the volumetric correction ratio. The temperature of the sample gas should be substantially the same as the pipeline gas in the pipeline when the sample gas flowrate is measured. | ||||||
| 114 | Fluid metering apparatus | US991157 | 1992-12-16 | US5357793A | 1994-10-25 | Wijbren Jouwsma |
| Device for measuring pressure differences or mass portions in a fluid flow--gas or liquid--and/or for implementing processes for mixing fluids, whereby when in use the fluid flows into the device, then passes a part therein where the fluid flow is laminar and the flow measurement is made, and finally flows out of the device, whereby the device has a turbulence filter which is integrated therein, with a settling chamber behind it. The fluid then first flows through that filter, so that a laminar flow leads to the flow measuring element. | ||||||
| 115 | Wide-range laminar flowmeter | US940144 | 1992-09-03 | US5297427A | 1994-03-29 | Ali Shambayati |
| An adjustable laminar flowmeter is disclosed for use in fluid flow measurement. The flowmeter comprises a plurality of paths, at least one of which has at least one dimension which is adjustable by means of an adjustment mechanism. A measuring device is located in operative relation with at least one of said paths to measure a characteristic of the flow through that path. By maintaining laminar flow, the ratio of fluid flow through the paths is linear for a wide range of flows. This allows for a simple straight-line approximation of the flow for a wide range of flow. Also, the full scale flow rate through the device is user adjustable. The symmetrical design of the flowmeter enables bi-directional flow measurement. | ||||||
| 116 | Method and apparatus for measuring mass flow and energy content using a differential pressure meter | US787188 | 1991-11-04 | US5226728A | 1993-07-13 | William H. Vander Heyden |
| A method and apparatus for monitoring in real time the mass and energy flow rate of a gas through a pipeline. The invention determines the ratio of the mass flow rate of pipeline gas flowing through a pipeline compared to the mass flow rate of sample gas tapped from the pipeline line. The invention involves tapping sample gas from the pipeline and flowing the sample gas to a capillary tube or a similar device for creating a pressure differential in a small flow. The sample gas is maintained at substantially the same temperature as the gas in the pipeline while the sample gas is in the capillary tube. The sample gas flows through the capillary tube continuously as controlled by a flow controller at a rate that is independent of the pipeline gas flow rate. A differential pressure cell measures the pressure differential of the sample gas across the capillary tube and also measures the pressure differential of the pipeline gas across an orifice in the pipeline. The mass flow ratio of the pipeline gas flowing through the pipeline to the sample gas flowing through the capillary tube is computed using the pressure differentials measured by the differential pressure cell. The energy content of the pipeline gas is determined by measuring the energy content of the sample gas and relating that value to the mass flow ratio of the pipeline gas compared to the sample gas. If the sample gas is a saturated hydrocarbon and is burned with air at maximum flame temperature, the energy content of the pipeline gas stream is mathematically related to the mass flow rate of the air and the mass flow ratio of the pipeline gas compared to the sample gas. | ||||||
| 117 | Fluid delivery monitor | US188850 | 1980-09-19 | US4421417A | 1983-12-20 | Thomas F. McQuade |
| A fluid delivery monitor having a flow sensor, accumulator for recording the duration of sensed flow, a code device to display the contents of and reset the accumulator upon entry of a preselected sequence, and a fluid sensor to disable the accumulator for sensed conductive fluid. The flow sensor is a pressure-sensitive switch recessed in a radial port and a vane substantially covering the port protects the switch from tampering and directs fluid toward the switch. | ||||||
| 118 | Two stage flowmeter | US966844 | 1978-12-06 | US4232549A | 1980-11-11 | Robert S. Migrin; Jerry A. Olson |
| A low pressure drop air flowmeter for an automobile engine is disclosed. The meter contains a main air flow passage, a relatively small venturi to receive a portion of the air flow, pressure ports for sensing stagnation and static pressure and a set of swirl vanes disposed adjacent the outlet of the venturi and operative to impart a swirl to the remainder of the air in the main passage, thereby creating a reduced pressure at the venturi outlet for amplifying the pressure difference between the stagnation and static pressure without appreciably increasing the pressure drop across the flowmeter. A tertiary passage provides a path of fluid communication between points upstream and downstream of the swirl vanes. This passage can be selectively opened or restricted by a valve which, in the preferred embodiment of the invention, opens the tertiary passage with increasing overall flow rate. This arrangement results in a fluid flowmeter having a characteristic pressure drop which is less than that of a conventional device, particularly at high flow rates. Also disclosed is a solenoid valve operative to selectively sample stagnation pressure in the tertiary passage and signal pressure in the throat of the venturi and generate an electrical output signal as a function of the difference between these two pressure signals. | ||||||
| 119 | Method of and apparatus for the measurement of the rate of flow by means of a bypass | US861605 | 1977-12-19 | US4175433A | 1979-11-27 | Sotokazu Rikuta |
| Two pressure-receiving members are provided within a proportional valve interconnecting a main pipe and a bypass line.The ratio of the rate of fluid flow in the main pipe to the rate of fluid flow in the bypass is held constant by moving vertically a valve plug within the proportional valve by the forces developed by the differential pressure placed across each of these two pressure-receiving members and by adjusting the rate of fluid flow in the bypass so as to keep a constant ratio of the pressure differential created across a restriction in the main pipe to the pressure differential created across a restriction in the bypass. Therefore the rate of fluid flow in the main pipe can be determined from a measurement of the rate of fluid flow in the bypass. | ||||||
| 120 | Fluid flow measuring device | US3785206D | 1972-04-26 | US3785206A | 1974-01-15 | BENSON J; BAKER W |
| Apparatus for measuring the velocity of fluid flow includes a form of pitot tube having orifices that develop a differential pressure related to the stream velocity and a means of directing an auxiliary stream of gas at or near one of the orifices. The auxiliary stream is arranged to be deflected by the main stream so that in the range of low velocities of the main stream, wherein pitot tubes are insensitive, the sensitivity of the apparatus is enhanced. In a preferred form of the device, a purged thermal flowmeter connected to the two orifices senses the velocity of the main stream.
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