GB1482561A - Device for and a method of monitoring fluid flow - Google Patents

Device for and a method of monitoring fluid flow

Info

Publication number
GB1482561A
GB1482561A GB4261/74A GB426174A GB1482561A GB 1482561 A GB1482561 A GB 1482561A GB 4261/74 A GB4261/74 A GB 4261/74A GB 426174 A GB426174 A GB 426174A GB 1482561 A GB1482561 A GB 1482561A
Authority
GB
United Kingdom
Prior art keywords
flow
fluid
rate
phase
transmitted
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4261/74A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lucas Electrical Co Ltd
Original Assignee
Lucas Electrical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lucas Electrical Co Ltd filed Critical Lucas Electrical Co Ltd
Priority to GB4261/74A priority Critical patent/GB1482561A/en
Priority to DE19742453765 priority patent/DE2453765A1/en
Priority to FR7443247A priority patent/FR2259354A1/fr
Priority to IT7547874A priority patent/IT1035097B/en
Priority to JP50011057A priority patent/JPS50109763A/ja
Publication of GB1482561A publication Critical patent/GB1482561A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
    • G01F1/32—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
    • G01F1/325—Means for detecting quantities used as proxy variables for swirl
    • G01F1/3282—Means for detecting quantities used as proxy variables for swirl for detecting variations in infrasonic, sonic or ultrasonic waves, due to modulation by passing through the swirling fluid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
    • G01F1/32—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
    • G01F1/325—Means for detecting quantities used as proxy variables for swirl
    • G01F1/3287—Means for detecting quantities used as proxy variables for swirl circuits therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Measuring Volume Flow (AREA)

Abstract

1482561 Ultrasonic fluid-flow measurement LUCAS ELECTRICAL Ltd 15 Oct 1974 [30 Jan 1974] 04261/74 Heading G1G A fluid-flow measurement device e.g. for use in measuring air-flow in a fuel injection system, consists in measuring the variations produced in ultrasonic vibrations transmitted across the fluid-flow in the outlet passage from a vortex chamber into which the fluid flows at inlets in the periphery thereof. Air enters vortex chamber 21 through inlets 22 and passes in continuous vortex motion out through outlet tube 23 on the periphery of which are mounted TX transducer 24 and RX transducer 25. It is stated that the modulation imparted to the received ultrasonic signal is generally dependent on the rate of fluid-flow. The flow-rate may be monitored on a C.R.T., which is arranged to display phase difference signal between the transmitted and received signal. Examples are given, Figs. 3-6, (not shown) of various waveforms produced by differing flow-rates. The received signal alone may be alternatively displayed, Figs. 7-12, (not shown). In another embodiment the individual peaks and/or troughs in the modulated waveforms may be counted electronically over a given period of time to provide a digital fluid flow-rate read-out. In a further embodiment, Fig. 13, (not shown), a detection circuit is used to determine electronically, the transmitted/received phase relationship, having two output terminals (33, 34) whereby for an in phase condition, one terminal is negative, for 180 degrees out of phase, the other terminal is negative and for, 90 degrees phase shift, the polarities are equal, the frequency of the output being used to measure the fluidflow-rate.
GB4261/74A 1974-01-30 1974-01-30 Device for and a method of monitoring fluid flow Expired GB1482561A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB4261/74A GB1482561A (en) 1974-01-30 1974-01-30 Device for and a method of monitoring fluid flow
DE19742453765 DE2453765A1 (en) 1974-01-30 1974-11-13 MEDIUM FLOW DEVICE, METHOD OF MEASURING MEDIUM FLOW RATE BY SUCH DEVICE, AND SYSTEM FOR MEASURING MEDIUM FLOW RATE WITH DEVICE OF SUCH KIND
FR7443247A FR2259354A1 (en) 1974-01-30 1974-12-30
IT7547874A IT1035097B (en) 1974-01-30 1975-01-28 FLUID DEVICE AND APPARATUS FOR MUSURING THE FLOW THROUGH IT
JP50011057A JPS50109763A (en) 1974-01-30 1975-01-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4261/74A GB1482561A (en) 1974-01-30 1974-01-30 Device for and a method of monitoring fluid flow

Publications (1)

Publication Number Publication Date
GB1482561A true GB1482561A (en) 1977-08-10

Family

ID=9773782

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4261/74A Expired GB1482561A (en) 1974-01-30 1974-01-30 Device for and a method of monitoring fluid flow

Country Status (5)

Country Link
JP (1) JPS50109763A (en)
DE (1) DE2453765A1 (en)
FR (1) FR2259354A1 (en)
GB (1) GB1482561A (en)
IT (1) IT1035097B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2125549A (en) * 1982-06-30 1984-03-07 Kubota Trane Ltd Fluid flowmeter of the karman vortex detecting type and air conditioning system
US8126154B2 (en) 2006-09-05 2012-02-28 Continental Automotive Gmbh Circuit arrangement for the bidirectional operation of sound transducers disposed at the ends of a measuring section
CN111351958A (en) * 2018-12-21 2020-06-30 上海华虹计通智能***股份有限公司 Time delay detection method and device, and fluid speed measurement method and system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU537006B2 (en) * 1979-01-11 1984-05-31 J-Tec Associates Inc. Density and flowrate of fluid
IT1311771B1 (en) * 1999-02-24 2002-03-19 Giorgio Bergamini PERFECTED GAS FLOW METER WITH ULTRASOUNDS BASED ON PARABOLIC MIRRORS.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2125549A (en) * 1982-06-30 1984-03-07 Kubota Trane Ltd Fluid flowmeter of the karman vortex detecting type and air conditioning system
US8126154B2 (en) 2006-09-05 2012-02-28 Continental Automotive Gmbh Circuit arrangement for the bidirectional operation of sound transducers disposed at the ends of a measuring section
CN111351958A (en) * 2018-12-21 2020-06-30 上海华虹计通智能***股份有限公司 Time delay detection method and device, and fluid speed measurement method and system
CN111351958B (en) * 2018-12-21 2021-11-02 上海华虹计通智能***股份有限公司 Time delay detection method and device, and fluid speed measurement method and system

Also Published As

Publication number Publication date
IT1035097B (en) 1979-10-20
DE2453765A1 (en) 1975-08-07
JPS50109763A (en) 1975-08-29
FR2259354A1 (en) 1975-08-22

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee