EP1062055B1 - Demontierbare ringförmige akustische sendeantenne - Google Patents

Demontierbare ringförmige akustische sendeantenne Download PDF

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Publication number
EP1062055B1
EP1062055B1 EP99907670A EP99907670A EP1062055B1 EP 1062055 B1 EP1062055 B1 EP 1062055B1 EP 99907670 A EP99907670 A EP 99907670A EP 99907670 A EP99907670 A EP 99907670A EP 1062055 B1 EP1062055 B1 EP 1062055B1
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EP
European Patent Office
Prior art keywords
rings
annuli
profiled
antenna
antenna according
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 - Lifetime
Application number
EP99907670A
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English (en)
French (fr)
Other versions
EP1062055A1 (de
Inventor
Marc Thomson-CSF EDOUARD
Gilles Thomson-CSF LUBRANO
Vito Thomson-CSF SUPPA
Yves Thomson-CSF LAGIER
Jacques Thomson-CSF BRUN
Jean-Paul Thomson-CSF GUIDO
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.)
Thales Underwater Systems SAS
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Thales Underwater Systems SAS
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Publication date
Application filed by Thales Underwater Systems SAS filed Critical Thales Underwater Systems SAS
Publication of EP1062055A1 publication Critical patent/EP1062055A1/de
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Publication of EP1062055B1 publication Critical patent/EP1062055B1/de
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Expired - Lifetime legal-status Critical Current

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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
    • B06B1/0607—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 multiple elements
    • B06B1/0622—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 multiple elements on one surface
    • B06B1/0633—Cylindrical array

Definitions

  • the present invention relates to transmitting antennas which have the shape of a ring and which are removable. Such antennas are particularly useful for long range low frequency sonars.
  • US Patent 3,243,767 recommends the use of a single tie rod to hold together the transducers, which leads to an embodiment very massive and also requires two fixing covers also massive. This also leads to an increase in mass inactive with respect to the active mass.
  • the invention proposes a removable annular acoustic emission antenna, of the type comprising at least one prestressed ring formed by a set of piezoelectric segment grouped to form sectors substantially identical, of end pieces fixed on these sectors to delimit between them wedge-shaped intervals, and wedge-shaped chocks adapted to these intervals and placed therein, a conforming hoop allowing all sectors to be maintained, and means to for sliding the shims towards the inside of the ring for prestressing the segments on the hoop, characterized in that it includes a set of substantially identical rings superimposed on one above the other so that the chocks are in facing each other, two profiled crowns of the same diameter that the prestressed rings placed respectively at the two ends of the stack, and a set of through tie rods respectively the groups of wedges superimposed by means of longitudinal holes drilled in these shims to be fixed to the crowns profiled in order to press the rings against each other.
  • it comprises two envelopes of elastic material covering respectively the outer and inner faces of the cylinder formed by the stack rings, and each comprising flanges anchoring in peripheral grooves made in the faces of the profiled crowns located from the other side of the faces of these crowns coming to rest on the rings.
  • it also comprises two flanges in the form of crowns fixed respectively to said surfaces of profiled crowns to hold said flanges in said peripheral grooves.
  • it has crowns insulators inserted between the superimposed rings.
  • it also comprises rings of elastic material interposed between the profiled rings and the insulating rings located under these rings to decouple acoustically the rings of the holding structure thereof.
  • the fixing tie rods form screws with heads resting on the outside of one profiled crowns, the other ends of which are threaded and are screwed into tapped blind holes, drilled on the face inside of the other profiled crown.
  • the power connector of the antenna and the inflation tip thereof are fixed on supports elastic bands attached to the outer wall of the inner casing antenna protection.
  • the active elements of this ring are made up of a set of trapezoidal segments 101 in piezoelectric ceramic arranged the against each other with alternating polarizations to constitute the sectors 102 of a circular ring.
  • a number of rings such as that described above are placed one above the other in order to obtain a master cylinder whose emission characteristics, the power available without deterioration in particular, are those desired.
  • three rings 201 to 203 were used .
  • the rings are placed on top of each other in such a way that the active segments 102 be superimposed in continuity with each other others, which means that the corners 106 and the shims 109 are themselves superimposed on each other.
  • shims 109 longitudinal holes 205, one per shim, which connect the face upper and lower side of these shims, as shown in figure 3.
  • the tapped holes 110 are of a sufficiently shallow depth so as not to lead into hole 205, so as not to risk disrupt the assembly described below.
  • the lower profile 208 is pierced with holes which are opposite the holes 205 of ring 203, to allow the tie rods to pass through 206 which are in the form of screws whose heads come to rest on the external face of this profile 208.
  • the other ends of the tie rods 206 are threaded and come screw into tapped blind holes 209 drilled in profile 207 plumb with the rods 206.
  • This construction method is the simplest, but we could use other variants such as for example a hole opening onto the upper face of profile 207 and a nut coming screw on screw 206, or threaded rods at both ends coming from cross the two sections 207 and 208 and each provided with their ends of nuts intended to secure the assembly.
  • crowns 209 and 210 identical to the crowns 204, and from the acoustic point of view of the crowns 211 and 212 of relatively thick elastic material, 4 mm thick rubber for example, which separate these profiles emitting piezoelectric segments.
  • these crowns have have been shown cut to show the superposition of the layers, in particular at the level of the hold 109.
  • the sections 207 and 208 therefore have a flat lower face making it possible to rest on the rubber crowns and an upper face having external peripheral 213 and internal 214 grooves.
  • the external and internal faces of this assembly are covered with two layers of rubber respectively 215 and 216 which form envelopes intended to ensure the tightness of the stack with respect to external agents, in particular sea water in which the device must be submerged.
  • These envelopes have at their ends rims 217 and 218, obtained for example by machining or by molding, which come to be embedded respectively in the grooves 213 and 214.
  • these flanges have a median shoulder 222 which abuts against a mediating circular projection 223 formed on the top of the profiles and concentric with the groove 213, so as to be able to center each flange without difficulty on the corresponding profile, by fitting it like a cover.
  • the crowns can be machined to eliminate the internal excess thickness 230, corresponding to the offset in height of the groove 314 relative to the groove 215 , in order to minimize the inactive weight of the assembly as much as possible.
  • a connector is used multifilaire 224, which is placed in a nozzle 225 produced in the same material, for example rubber, as the inner casing 216.
  • This nozzle is fixed on the outside face of this inside envelope of so as to project into the interior space of the transducer. Fixation is carried out by any known means to connect pieces of material of this nature, by vulcanization for example.
  • valve 226, allowing the filling interior space of the transducer with a suitable fluid, oil for example, is fixed with a 227 cap on the inner casing 216.
  • a transmit antenna In an exemplary embodiment of such a transmit antenna, three rings were assembled, each comprising 14 segments and the interior and exterior diameters are approximately 450 and 600 mm.
  • the active mass / total mass ratio of this device is greater than 75%, which is a particularly remarkable value. otherwise the antenna thus obtained is, as can be seen, entirely can be dismantled and reassembled, making it easy to replace and quickly a segment which would prove to be defective.
  • the support structure of a towed fish for example, we use one or the other, or two flanges 219 and 220.
  • the layers of rubber 211 then allows acoustically decouple the antenna from this structure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Claims (7)

  1. Demontierbare ringförmige akustische Sendeantenne von der Art, die mindestens einen vorgespannten Ring (201) aufweist, der von einer Einheit von piezoelektrischen Segmenten (101), die so gruppiert werden, dass sie im Wesentlichen identische Sektoren (102) bilden, von Endstücken (106), die an diesen Sektoren befestigt sind, um zwischen ihnen keilförmige Zwischenräume zu begrenzen, und von keilförmigen Spannklötzen (109) gebildet wird, die an diese Zwischenräume angepasst und in diesen angeordnet sind, einen Formgebungs-Bandring (108), der es ermöglicht, die Einheit der Sektoren zusammenzuhalten, und Spannmittel (110-112) aufweist, die es ermöglichen, die Spannklötze zur Innenseite des Rings gleiten zu lassen, um die Segmente auf dem Bandring vorzuspannen, dadurch gekennzeichnet, dass sie eine Einheit von im Wesentlichen gleichen vorgespannten Ringen (201-203), die derart übereinander angeordnet sind, dass die Spannklötze einander gegenüber liegen, zwei Profilkronen (207, 208) gleichen Durchmessers wie die vorgespannten Ringe, die je an den beiden Enden des Stapels angeordnet sind, und eine Einheit von Befestigungs-Spannstangen (206) aufweist, welche je die Gruppen von übereinander angeordneten Klötzen über Längslöcher (205) durchqueren, die in diese Klötze gebohrt sind, um an den Profilkronen befestigt zu werden, damit die Ringe gegeneinander gepresst werden.
  2. Antenne nach Anspruch 1, dadurch gekennzeichnet, dass sie zwei Hüllen (215-216) aus elastischem Material aufweist, die die Außen- bzw. die Innenseite des vom Ringstapel gebildeten Zylinders bedecken, und die je umgebogene Randleisten (217, 218) aufweisen, welche sich in Umfangsnuten (213, 214) verankern, die in den Flächen der Profilkronen ausgebildet sind, die in Bezug auf die auf den Ringen aufliegenden Flächen dieser Kronen auf der anderen Seite liegen.
  3. Antenne nach Anspruch 2, dadurch gekennzeichnet, dass sie weiter zwei Flansche in Form von Kronen (219-220) aufweist, die an den Flächen der Profilkronen befestigt sind, um die umgebogenen Randleisten in den Umfangsnuten zu halten.
  4. Antenne nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass sie isolierende Kronen (204) aufweist, die zwischen die übereinander angeordneten Ringe eingefügt sind.
  5. Antenne nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass sie außerdem Ringe aus elastischem Material (211) aufweist, die zwischen die Profilkronen und die unter diesen Kronen befindlichen, isolierenden Ringe eingefügt sind, um die Ringe akustisch von deren Haltestruktur abzukoppeln.
  6. Antenne nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Befestigungs-Spannstangen (206) Schrauben bilden, deren Köpfe auf der Außenfläche einer der Profilkronen aufliegen und deren andere Enden mit Gewinde versehen sind und in mit Gewinde versehene Sacklöcher einschraubt werden, die auf der Innenseite der anderen Profilkrone gebohrt sind.
  7. Antenne nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Stromzufuhrstecker (224) der Antenne und deren Einfüll-Ansatzstück (226) auf elastischen Trägern (225-227) befestigt sind, die selbst an der Außenwand der inneren Schutzhülle (216) der Antenne befestigt sind.
EP99907670A 1998-03-10 1999-03-09 Demontierbare ringförmige akustische sendeantenne Expired - Lifetime EP1062055B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9802912 1998-03-10
FR9802912A FR2776161B1 (fr) 1998-03-10 1998-03-10 Antenne d'emission acoustique annulaire demontable
PCT/FR1999/000523 WO1999046059A1 (fr) 1998-03-10 1999-03-09 Antenne d'emission acoustique annulaire demontable

Publications (2)

Publication Number Publication Date
EP1062055A1 EP1062055A1 (de) 2000-12-27
EP1062055B1 true EP1062055B1 (de) 2004-05-12

Family

ID=9523862

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99907670A Expired - Lifetime EP1062055B1 (de) 1998-03-10 1999-03-09 Demontierbare ringförmige akustische sendeantenne

Country Status (7)

Country Link
US (1) US6345014B1 (de)
EP (1) EP1062055B1 (de)
JP (1) JP4031198B2 (de)
AU (1) AU747667B2 (de)
DE (1) DE69917235T2 (de)
FR (1) FR2776161B1 (de)
WO (1) WO1999046059A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2800229B1 (fr) 1999-10-22 2002-04-05 Thomson Marconi Sonar Sas Transducteur acoustique sous-marin a large bande
FR2809580B1 (fr) 2000-05-26 2002-08-30 Thomson Marconi Sonar Sas Transducteur electrodynamique pour acoustique sous-marine
US7500398B2 (en) * 2003-01-17 2009-03-10 Kistler Holding, Ag Prestressing element for sensors
FR3015785B1 (fr) 2013-12-20 2015-12-25 Thales Sa Antenne omnidirectionnelle compacte pour sonar trempe
FR3087542B1 (fr) 2018-10-22 2021-01-15 Thales Sa Antenne d'emission acoustique

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3243767A (en) * 1962-04-30 1966-03-29 Paul M Kendig Electroacoustic transducer for detection of low level acoustic signals over a broad frequency range
US3559162A (en) * 1969-04-14 1971-01-26 Sparton Corp Unitary directional sonar transducer
BE757591A (fr) 1969-11-25 1971-03-16 Thomson Csf Perfectionnements aux domes de systemes sonars et procede de leur fabrication
FR2290812A1 (fr) 1974-11-08 1976-06-04 Thomson Csf Transducteur electroacoustique pour immersion profonde
GB1518138A (en) 1974-12-17 1978-07-19 Thomson Csf Cooling device for components which dissipate large amounts of heat
FR2589248B1 (fr) 1978-02-17 1988-01-22 Thomson Csf Amelioration des systemes d'autoguidage acoustique de vehicules sous-marins
FR2431419A1 (fr) 1978-07-18 1980-02-15 Thomson Csf Bouee aeroportee largable
FR2450193A1 (fr) 1979-02-27 1980-09-26 Thomson Csf Bouee aeroportee largable a declenchement inertiel
FR2464179A2 (fr) 1979-08-28 1981-03-06 Thomson Csf Bouee aeroportee largable
FR2622333B1 (fr) 1987-10-27 1990-01-26 Thomson Csf Revetement anechoique pour ondes acoustiques
FR2656971B1 (fr) 1990-01-05 1992-09-04 Thomson Csf Hydrophone basse frequence et antenne sonar comportant de tels hydrophones.
FR2672179B1 (fr) 1991-01-25 1993-04-16 Thomson Csf Transducteur acoustique flextenseur pour immersion profonde.
US5630837A (en) * 1993-07-01 1997-05-20 Boston Scientific Corporation Acoustic ablation
FR2725684A1 (fr) 1994-10-18 1996-04-19 Thomson Csf Bouee aeroportee largable
FR2728755B1 (fr) * 1994-12-23 1997-01-24 Thomson Csf Transducteur acoustique en anneau precontraint
FR2730894B3 (fr) 1995-02-21 1997-03-14 Thomson Csf Procede de fabrication d'une carte electronique a refroidissement par conduction thermique
FR2764160B1 (fr) 1997-05-27 1999-08-27 Thomson Marconi Sonar Sas Transducteur electrodynamique pour acoustique sous-marine

Also Published As

Publication number Publication date
US6345014B1 (en) 2002-02-05
DE69917235D1 (de) 2004-06-17
FR2776161B1 (fr) 2000-05-26
AU747667B2 (en) 2002-05-16
JP4031198B2 (ja) 2008-01-09
WO1999046059A1 (fr) 1999-09-16
JP2002505953A (ja) 2002-02-26
AU2732399A (en) 1999-09-27
DE69917235T2 (de) 2005-05-04
FR2776161A1 (fr) 1999-09-17
EP1062055A1 (de) 2000-12-27

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