GB1490989A - Flow rate meters - Google Patents

Flow rate meters

Info

Publication number
GB1490989A
GB1490989A GB1414274A GB1414274A GB1490989A GB 1490989 A GB1490989 A GB 1490989A GB 1414274 A GB1414274 A GB 1414274A GB 1414274 A GB1414274 A GB 1414274A GB 1490989 A GB1490989 A GB 1490989A
Authority
GB
United Kingdom
Prior art keywords
plate
flow
upstream
march
control member
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
GB1414274A
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.)
UK Secretary of State for Industry
Original Assignee
UK Secretary of State for Industry
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 UK Secretary of State for Industry filed Critical UK Secretary of State for Industry
Priority to GB1414274A priority Critical patent/GB1490989A/en
Publication of GB1490989A publication Critical patent/GB1490989A/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
    • G01F1/05—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
    • G01F1/22—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 by variable-area meters, e.g. rotameters
    • 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
    • G01F1/34—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 measuring pressure or differential pressure
    • G01F1/36—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 measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
    • 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
    • G01F1/34—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 measuring pressure or differential pressure
    • G01F1/36—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 measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
    • G01F1/40—Details of construction of the flow constriction devices
    • G01F1/42—Orifices or nozzles

Landscapes

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

Abstract

1490989 Measuring fluid-flow INDUSTRY SECRETARY OF STATE FOR 24 March 1975 [29 March 1974 2 Dec 1974] 14142/74 and 52107/74 Heading GIR In a flow-rate meter, a passageway 22 has a divergent portion 25 and control member 27 mounted on a stem 29 slideably mounted on a support 31 and provided with a plate 28 and the arrangement is such that the fluid-flow 24 moves the plate 28 against a spring 34 to a position to create an annular orifice 38 between the plate 28 and the divergent portion 25 producing a linear relationship between the flow-rate and a chosen variable related to the area of the orifice. The periphery of the plate 28 may be in the form of a frustrum of a right circular core, Fig 1, or a symmetrical knife edge, Fig 3 (not shown) in which case the device can be used for bi-directional operation. The upstream portion of the pipe 21 may converge in the manner shown at 23, or may be a mirror image of the portion 25, Fig 1 (not shown). The single spring 34 may be replaced by a plurality of springs in parallel arranged to operate in tension or compression or a combination of both. Upstream and downstream pressure taps 36, 37 are provided. In a further embodiment, Fig 4 (not shown) the plate member has a flat circular upstream face on a hollow ogival or conical downstream portion. The pressure tappings may be arranged on the control member and flexible leads connect them to a reading indicator (not shown).
GB1414274A 1975-03-24 1975-03-24 Flow rate meters Expired GB1490989A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1414274A GB1490989A (en) 1975-03-24 1975-03-24 Flow rate meters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1414274A GB1490989A (en) 1975-03-24 1975-03-24 Flow rate meters

Publications (1)

Publication Number Publication Date
GB1490989A true GB1490989A (en) 1977-11-09

Family

ID=10035781

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1414274A Expired GB1490989A (en) 1975-03-24 1975-03-24 Flow rate meters

Country Status (1)

Country Link
GB (1) GB1490989A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0124218A1 (en) * 1983-03-03 1984-11-07 Fluid Devices Limited Fluid-flow transducer
US5125753A (en) * 1989-04-03 1992-06-30 Landis & Gyr Betriebs Ag Device to measure flow-through and/or quantity of heat
FR3035715A1 (en) * 2015-04-29 2016-11-04 Airbus Operations Sas SYSTEM FOR DETERMINING A SENSE OF FLOW OF A GAS IN A CANALIZATION

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0124218A1 (en) * 1983-03-03 1984-11-07 Fluid Devices Limited Fluid-flow transducer
US5125753A (en) * 1989-04-03 1992-06-30 Landis & Gyr Betriebs Ag Device to measure flow-through and/or quantity of heat
FR3035715A1 (en) * 2015-04-29 2016-11-04 Airbus Operations Sas SYSTEM FOR DETERMINING A SENSE OF FLOW OF A GAS IN A CANALIZATION

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee