FR2392371A1 - Detecting vibrations in liq. - by piezoelectric transducer partic. for low frequencies and high temp. e.g. in nuclear reactor coolant constituted by liq. metal - Google Patents

Detecting vibrations in liq. - by piezoelectric transducer partic. for low frequencies and high temp. e.g. in nuclear reactor coolant constituted by liq. metal

Info

Publication number
FR2392371A1
FR2392371A1 FR7715644A FR7715644A FR2392371A1 FR 2392371 A1 FR2392371 A1 FR 2392371A1 FR 7715644 A FR7715644 A FR 7715644A FR 7715644 A FR7715644 A FR 7715644A FR 2392371 A1 FR2392371 A1 FR 2392371A1
Authority
FR
France
Prior art keywords
liq
partic
cavity
nuclear reactor
piezoelectric transducer
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.)
Granted
Application number
FR7715644A
Other languages
French (fr)
Other versions
FR2392371B1 (en
Inventor
Raymond Blanc
Louis Pelloux
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Priority to FR7715644A priority Critical patent/FR2392371A1/en
Publication of FR2392371A1 publication Critical patent/FR2392371A1/en
Application granted granted Critical
Publication of FR2392371B1 publication Critical patent/FR2392371B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0644—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H3/00—Measuring characteristics of vibrations by using a detector in a fluid
    • G01H3/10—Amplitude; Power
    • G01H3/12—Amplitude; Power by electric means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

A detector of vibrations in a liq. comprises a piezoelectric transducer in a cavity sealed by a membrane in contact with the liq. A vacuum is maintained in the cavity. The membrane is connected to one of the faces of the transducer by a component which transmits vibrations, made of a material which is thermally insulating. The other face of the transducer is fixed and the cavity has a fluid-tight passage for an electric conductor. The detector is partic. adapted for detecting low-frequency vibrations transmitted by a liq. at high temps., e.g. the liq. metal coolant of a nuclear reactor. Satisfactory thermal insulation is achieved through the vacuum established in the cavity and the mechanical transmission component. Low frequency vibrations are detected because of the good electrical insulation and the amplification due to the membrane.
FR7715644A 1977-05-23 1977-05-23 Detecting vibrations in liq. - by piezoelectric transducer partic. for low frequencies and high temp. e.g. in nuclear reactor coolant constituted by liq. metal Granted FR2392371A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7715644A FR2392371A1 (en) 1977-05-23 1977-05-23 Detecting vibrations in liq. - by piezoelectric transducer partic. for low frequencies and high temp. e.g. in nuclear reactor coolant constituted by liq. metal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7715644A FR2392371A1 (en) 1977-05-23 1977-05-23 Detecting vibrations in liq. - by piezoelectric transducer partic. for low frequencies and high temp. e.g. in nuclear reactor coolant constituted by liq. metal

Publications (2)

Publication Number Publication Date
FR2392371A1 true FR2392371A1 (en) 1978-12-22
FR2392371B1 FR2392371B1 (en) 1980-02-22

Family

ID=9191152

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7715644A Granted FR2392371A1 (en) 1977-05-23 1977-05-23 Detecting vibrations in liq. - by piezoelectric transducer partic. for low frequencies and high temp. e.g. in nuclear reactor coolant constituted by liq. metal

Country Status (1)

Country Link
FR (1) FR2392371A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109281631A (en) * 2018-11-09 2019-01-29 美钻深海能源科技研发（上海）有限公司 Underwater kit shakes automatic safe closing well system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109281631A (en) * 2018-11-09 2019-01-29 美钻深海能源科技研发（上海）有限公司 Underwater kit shakes automatic safe closing well system

Also Published As

Publication number Publication date
FR2392371B1 (en) 1980-02-22

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Legal Events

Date Code Title Description
ST Notification of lapse