[특허]Mass-volume vortex flowmeter

[미국특허] Mass-volume vortex flowmeter 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01F-001/86
출원번호	US-0642664 (1991-01-17)
발명자 / 주소	Lew Hyok S. (7890 Oak St. Arvada CO 80005)
인용정보	피인용 횟수 : 44 인용 특허 : 0

초록 ▼

A flowmeter has a vortex generating bluff body (102) disposed across the flow passage (106), a planar member (103) disposed immediate upstream of the bluff body (102) including a plurality of total pressure ports emerging through the leading edge of the planar member (103) and a plurality of static pressure ports emerging through the side faces of the planar member (103), and a vortex sensing device including a planar member (104) and one or two transducers (111 and 112), which flowmeter determines the mass and volume flow rates of the fluid and the density of the fluid from the dynamic pressure determined from the difference between the total and static pressures and the fluid velocity determined from the vortex shedding frequency.

대표청구항 ▼

An apparatus for measuring flow rate of fluid comprising in combination: a) a body including a flow passage; b) a vortex generator of an elongated cylindrical shape with a blunt upstream face disposed across the flow passage, said vortex generator including a planar member disposed immediate upstream of the vortex generator on a plane generally parallel to the central axis of the flow passage and to the longitudinal axis of the vortex generator; c) at least one stub cylindrical member disposed parallel to the central axis of the flow passage and extending from a portion of leading edge of the planar member in a direction opposite to the direction of fluid flow, said at least one stub cylindrical member including a total pressure port emerging through the tip thereof and connected to a first conduit for tapping the total pressure of the fluid flow and at least one static pressure port emerging through cylindrical surface thereof and connected to a second conduit for tapping the static pressure of the fluid flow; d) means for measuring shedding frequency of vortices from the vortex generator; and e) means for measuring difference between the total and static pressure of the fluid flow.

이 특허를 인용한 특허 (44) 인용/피인용 타임라인 분석

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Gysling, Daniel L.; Bryant, Rebecca M.; Winston, Charles R., Flow rate measurement for industrial sensing applications using unsteady pressures.
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Gysling, Daniel L.; Bryant, Rebecca S.; Winston, Charles R., Flow rate measurement using unsteady pressures.
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Gysling, Daniel L.; Kersey, Alan D.; Paduano, James D., Fluid parameter measurement in pipes using acoustic pressures.
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Moon Eric D. ; Wahl Robert E., Method for canceling the dynamic response of a mass flow sensor using a conditioned reference.
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Keita,Mamadi; H철cker,Rainer; Popp,Oliver, Method for determining a mass flow of a fluid flowing in a pipe.
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Lowell A. Kleven ; Robert C. Hedtke ; David E. Wiklund, Method for measuring fluid flow.
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Gysling,Daniel L.; Loose,Douglas H., Sand monitoring within wells using acoustic arrays.
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Gysling, Daniel L., Venturi augmented flow meter.
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Kleven, Lowell A., Vortex flowmeter with measured parameter adjustment.
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Kleven Lowell A. ; Hedtke Robert C. ; Wiklund David E., Vortex flowmeter with signal processing.
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Lowell A. Kleven ; Robert C. Hedtke ; David E. Wiklund, Vortex flowmeter with signal processing.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Mass-volume vortex flowmeter 원문보기