FR2444935A1 - DYNAMIC GAS PRESSURE MEASURING DEVICE - Google Patents

DYNAMIC GAS PRESSURE MEASURING DEVICE

Info

Publication number
FR2444935A1
FR2444935A1 FR7931231A FR7931231A FR2444935A1 FR 2444935 A1 FR2444935 A1 FR 2444935A1 FR 7931231 A FR7931231 A FR 7931231A FR 7931231 A FR7931231 A FR 7931231A FR 2444935 A1 FR2444935 A1 FR 2444935A1
Authority
FR
France
Prior art keywords
transducer
measuring device
gas pressure
pressure measuring
closed
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.)
Withdrawn
Application number
FR7931231A
Other languages
French (fr)
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.)
Rolls Royce PLC
Original Assignee
Rolls Royce PLC
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 Rolls Royce PLC filed Critical Rolls Royce PLC
Publication of FR2444935A1 publication Critical patent/FR2444935A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
    • G01L9/0051—Transmitting or indicating the displacement of flexible diaphragms using variations in ohmic resistance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/0007—Fluidic connecting means
    • G01L19/0023—Fluidic connecting means for flowthrough systems having a flexible pressure transmitting element
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
    • G01L19/0609—Pressure pulsation damping arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
    • G01L19/0681—Protection against excessive heat
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
    • G01L23/08—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid operated electrically
    • G01L23/18—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid operated electrically by resistance strain gauges

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

Des fluctuations de pression dynamique sont détectées à distance au moyen d'un transducteur 7 communiquant par l'intermédiaire d'un petit trou pratiqué dans une paroi du -conduit 1 constitué par une longueur de tube fermée à une extrémité 2 et ouvert à son autre extrémité 3 vers un espace dans lequel la pression doit être mesurée (par exemple une zone de haute pression dans un moteur à turbine à gaz), le trou étant plus proche de l'extrémité ouverte que de l'extrémité fermée. Une pièce insérée d'atténuation se présentant sous forme d'une tige ou d'un tube peut être disposée contre l'extrémité fermée pour déterminer une caractéristique de réponse de fréquence apériodique exempte de résonance, permettant de détecter des variations de pression dynamique jusqu'aux fréquences de plusieurs kHz, le transducteur étant protégé des hautes températures au point de détection.Dynamic pressure fluctuations are detected remotely by means of a transducer 7 communicating via a small hole made in a wall of the duct 1 consisting of a length of tube closed at one end 2 and open at its other. end 3 to a space in which the pressure is to be measured (eg a high pressure area in a gas turbine engine), the hole being closer to the open end than to the closed end. An attenuation insert in the form of a rod or tube can be disposed against the closed end to determine a resonance-free aperiodic frequency response characteristic, allowing dynamic pressure changes to be detected up to at frequencies of several kHz, the transducer being protected from high temperatures at the point of detection.

FR7931231A 1978-12-21 1979-12-20 DYNAMIC GAS PRESSURE MEASURING DEVICE Withdrawn FR2444935A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7849557A GB2037993A (en) 1978-12-21 1978-12-21 Dynamic gas pressure measuring device

Publications (1)

Publication Number Publication Date
FR2444935A1 true FR2444935A1 (en) 1980-07-18

Family

ID=10501872

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7931231A Withdrawn FR2444935A1 (en) 1978-12-21 1979-12-20 DYNAMIC GAS PRESSURE MEASURING DEVICE

Country Status (5)

Country Link
JP (1) JPS55116237A (en)
DE (1) DE2949670A1 (en)
FR (1) FR2444935A1 (en)
GB (1) GB2037993A (en)
IT (1) IT1126616B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59707653D1 (en) * 1997-08-14 2002-08-08 Alstom Pressure fluctuation measurements in a hot gas chamber (combustion chamber of a gas turbine)
DE10059701A1 (en) * 2000-12-01 2002-06-06 Alstom Switzerland Ltd Probe for measuring pressure vibrations
CA2394960C (en) 2001-08-27 2010-02-16 Mitsubishi Heavy Industries, Ltd. Measuring instrument of the pressure in a combustor
US6978680B2 (en) * 2003-02-27 2005-12-27 General Electric Company Dynamic pressure probe holder and method of obtaining a dynamic pressure signal
US6925883B2 (en) * 2003-08-28 2005-08-09 United Technologies Corporation Non resonating close coupled probe
DE102006010804A1 (en) * 2006-03-07 2007-09-20 Eads Deutschland Gmbh High-temperature pressure sensor element, in particular for measuring pressures within engines, method for its production and component for engines
US8616064B2 (en) 2006-04-21 2013-12-31 Kulite Semiconductor Products, Inc. Combination static and dynamic pressure transducer employing a micro-filter
US7975552B2 (en) * 2006-04-21 2011-07-12 Kulite Semiconductor Products, Inc. Pressure transducer employing a micro-filter and emulating an infinite tube pressure transducer
GB0823085D0 (en) * 2008-12-19 2009-01-28 Rolls Royce Plc Combustor Rumble
DE102014205459A1 (en) * 2014-03-24 2015-10-08 Rolls-Royce Deutschland Ltd & Co Kg Pressure measuring device for measuring dynamic pressures and gas turbine combustion chamber with a pressure measuring device
GB2534166A (en) * 2015-01-15 2016-07-20 Rolls Royce Plc Pressure sensor system
US20170148152A1 (en) * 2015-11-25 2017-05-25 General Electric Company Systems and Methods for Monitoring Component Strain

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3441695A (en) * 1966-11-14 1969-04-29 Gen Motors Corp Rate of fluid pressure change sensor for effecting a signal

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3441695A (en) * 1966-11-14 1969-04-29 Gen Motors Corp Rate of fluid pressure change sensor for effecting a signal

Also Published As

Publication number Publication date
GB2037993A (en) 1980-07-16
DE2949670A1 (en) 1980-06-26
JPS55116237A (en) 1980-09-06
IT1126616B (en) 1986-05-21
IT7928227A0 (en) 1979-12-19

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Legal Events

Date Code Title Description
ST Notification of lapse