CN206479247U - One kind is applied to can moving type towed linear-array sonar hydrophone - Google Patents
One kind is applied to can moving type towed linear-array sonar hydrophone Download PDFInfo
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- CN206479247U CN206479247U CN201720038589.3U CN201720038589U CN206479247U CN 206479247 U CN206479247 U CN 206479247U CN 201720038589 U CN201720038589 U CN 201720038589U CN 206479247 U CN206479247 U CN 206479247U
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- hydrophone
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Abstract
Being applied to the utility model discloses one kind can moving type towed linear-array sonar hydrophone, it has a piezoelectric ceramic tube, the piezoelectric ceramic tube is hollow circular cylinder, and the hollow circular cylinder two ends are symmetrical and reverse polarization, the piezoelectric ceramic tube two ends are respectively provided with a cover plate, two hydrophone contact pin one end pass through one of cover plate and are being connected to the piezoelectric ceramic tube just, negative electrode, the hydrophone contact pin and its through the cover plate be provided with insulation protective jacket, the cover plate is provided with sealing material A with piezoelectric ceramic tube junction, the inwall of the piezoelectric ceramic tube sets anti-sound backing, sealing material B is set outside the piezoelectric ceramic tube.The utility model changes existing hydrophone in piezoelectric ceramics tube outside and the internal structure polarized respectively, positive and negative polarization is carried out inside piezoelectric ceramic tube, reduce acceleration sensitivity, have the advantages that favorable expandability, interchangeability are strong, be easy to maintenance, it is highly reliable, it ensure that hydrophone keeps stable connection reliable in use, ensure that the data detected and transmission that the instruction that sends can stablize.
Description
Technical field
The utility model is related to the design of towed linear-array sonar hydrophone and manufacturing technology field, is specifically related to one
Kind be applied to can moving type towed linear-array sonar hydrophone, small volume, it is easy to make, rushing for certain hydraulic pressure intensity can be kept out
The effect of hitting.
Background technology
Towed linear-array sonar is a kind of size for being available for the towing of marine carrier very long sonar, to passive receipts
Listen the submarine noise of activity at a distance or active probe is carried out to submarine, towed linear-array sonar is widely used in Marine Sciences and ground
Study carefully, marine organisms research, detecting underwater object, the field such as military surveillance.
Sonar is just sent out from its birth as effective equipment of detection submarine along with the development of submarine technology
Exhibition, has been equipped with terms of the towing alignment sonar used and the towed linear-array sonar technology researched and developed from current foreign countries, drags
Draging the development trend of gust sonar technique can be summarized as follows：
The passive sonar working frequency that dress warship is used at present, generally 0.1~1.5kHz, the working frequency one of large-scale sonar
As be 1.5~3.5kHz.
Sonar transducer is the chief component of towed array sonar, and one of which is hydrophone.In the prior art, water is listened
Device is all one layer of plastic support of outer wrap mostly, and internal embedding, due to two kinds of materials, influences the propagation of the velocity of sound, causes sound source
Loss is big, and inner ceramic pipe, interior noise elimination backing has larger sound and reverberated, and influences the performance of product, the resistance to pressure energy of hydrophone
Power is poor, and traditional piezoceramic material is still the main material of sonar transducer at present.
The content of the invention
In view of above-mentioned the deficiencies in the prior art, the purpose of this utility model is that fixed occupancy body can be reduced by providing one kind
It is long-pending, easy to use, can effectively improve resistance water impact ability be applied to can moving type towed linear-array sonar hydrophone.
In order to realize above-mentioned utility model purpose, being applied to the utility model proposes one kind can moving type towing line array
Sonar hydrophone, it is characterised in that：The hydrophone has a piezoelectric ceramic tube（6）, the piezoelectric ceramic tube（6）For hollow circle
Cylinder, and the hollow circular cylinder two ends are symmetrical and reverse polarization, the piezoelectric ceramic tube（6）Two ends are respectively provided with a cover plate, two
Individual hydrophone contact pin（1）One end passes through one of cover plate and is connected to the piezoelectric ceramic tube（6）Positive and negative electrode, the hydrophone
Contact pin（1）With its through the cover plate be provided with insulation protective jacket（2）, the cover plate and piezoelectric ceramic tube（6）Junction is provided with
Sealing material A（4）, the piezoelectric ceramic tube（6）Inwall anti-sound backing is set（5）, the piezoelectric ceramic tube（6）Outside sets sealing material
B（8）.
Described piezoelectric ceramic tube（6）Material be piezopolymer.
Described cover plate is spherical outside surface shape.
Described piezoelectric ceramic tube（6）Keep concentric with two cover plates, eccentric situation must not occur.
Described anti-sound backing（5）Using the lightweight foamed plastics of high intensity, because this kind of material is with many tiny
Aperture, sound wave is internally done to be shaken repeatedly, plays noise elimination.
The hydrophone, in order to accurately differentiate hydrophone contact pin（1）Both positive and negative polarity, the hydrophone set water listen
Device contact pin（1）Outer face at be provided with "+", "-" mark, mark hydrophone contact pin（1）Both positive and negative polarity, facilitate wiring to identify,
Hydrophone contact pin（1）Ensure and piezoelectric ceramic tube（6）Polarity it is consistent.
The utility model provide be applied to can moving type towed linear-array sonar hydrophone, change existing hydrophone and exist
Piezoelectric ceramics tube outside and the internal structure polarized respectively, positive and negative polarization is carried out inside piezoelectric ceramic tube, acceleration is reduced
Sensitivity, has the advantages that favorable expandability, interchangeability are strong, is easy to that maintenance, highly reliable, lead time be short, research fund is few, energy
Enough ensure that hydrophone keeps stable connection reliable in use, ensure that the data detected and the instruction sent can stablize
Transmission.
Brief description of the drawings
Fig. 1 is the utility model embodiment hydrophone monnolithic case schematic diagram；
Fig. 2 is the overall planing surface figures of Fig. 1；
Fig. 3 a, Fig. 3 b are piezoelectric ceramic tube structural representations in the utility model embodiment；
Fig. 4 a, Fig. 4 b are the structural representations of the utility model embodiment hydrophone China and foreign countries spheric cover plate 3；
Fig. 5 is the utility model embodiment hydrophone sensitivity curve.
Wherein：1- hydrophone contact pins, 2- insulation protective jackets, 3,7- cover plates, the anti-sound backings of 4- sealing materials A, 5-, 6- piezoelectricity pottery
Porcelain tube, 8- sealing materials B, 9- threads a needle hole.
Embodiment
By further appreciate that public technology, means and its advantage that the utility model is used, especially exemplified by embodiment
And it is as follows to coordinate accompanying drawing to describe in detail, it is believed that specifically understand when can be able to by it deep.
The present embodiment provide be applied to can moving type towed linear-array sonar hydrophone, profile as shown in figure 1, wherein one
"+", "-" electrode designations are labeled with individual outer face, two hydrophone contact pins 1 for playing signal transmitting effect are listened by the water respectively
Draw at positive and negative electrode end inside device.Fig. 2 is the overall planing surface figure of Fig. 1 hydrophones, and it has the piezoelectricity of a hollow circular cylinder
Earthenware 6, and the piezoelectric ceramic tube 6 hollow circular cylinder two ends are symmetrical and reverse polarization, the material of the piezoelectric ceramic tube 6 is
Piezopolymer.The one end of piezoelectric ceramic tube 6 is provided with cover plate 3, and the other end is provided with cover plate 7, two one end of hydrophone contact pin 1 difference
The positive and negative electrode of the piezoelectric ceramic tube 6 is connected to after threading a needle hole 9 through one on cover plate 3, the hydrophone contact pin 1 is worn with it
Insulation protective jacket 2 is provided between the hole 9 of threading a needle crossed, the cover plate 3 and cover plate 7 are Nian Jie with sealing material A4 respectively with piezoelectric ceramic tube 6,
Ensure adhesive strength and environmental suitability, not only ensure to seal but also serve fixed and waterproof action.Cover plate 3 and piezoelectric ceramic tube 6
Sealing material A4 is also filled with the spherical space of junction, the effect of fixed hydrophone contact pin 1 can be further functioned as.The piezoelectricity
The hollow wall of earthenware 6 sets anti-sound backing 5, can prevent sound wave from shaking the inner chamber of piezoelectric ceramic tube 6 is counter, the piezoelectric ceramic tube 6
Outside sets the sealing material B8 of solidification, plays sealing waterproof action.
The cover plate 3 and cover plate 7 for being separately positioned on the two ends of piezoelectric ceramic tube 6 play pressure-resistant effect.In order to increase hydrophone
Water-resistant pressure, cover plate 3 and cover plate 7 be designed to spherical outside surface shape, and this Surface of Sphere can increase the surface area that is stressed, and increase water and listen
The voltage endurance capability of device, enhances the impact resistance of hydrophone.Piezoelectric ceramic tube 6, cover plate 3 and cover plate 7 need to keep concentric,
Eccentric situation must not occur.Fig. 3 a are the contour structures schematic diagrames of piezoelectric ceramic tube 6, and Fig. 3 b are its A-A to profile.Along cylinder
Each segment length at two is polarized positive and negative electrode respectively on body, and middle one section is not done polarization process, by the wiring point of two electrodes point
The inner chamber of piezoelectric ceramic tube 6 is not incorporated into, as positive and negative electrode bonding wire point, the anti-sound backing 5 installed inside piezoelectric ceramic tube 6
Noise elimination is acted on.
As shown in fig. 4 a, Fig. 4 b are its B-B direction profiles to the structure of cover plate 3, between hydrophone contact pin 1 and spherical lower cover 3
The insulation protective jacket 2 of design, ensure that the signal between hydrophone contact pin 1 is not interconnected, plays the effect of insulation.
In order to reduce piezoelectric ceramic tube 6 shake sounding when, sound piezoelectric ceramic tube 6 hollow wall roundtrip,
Noise is caused, the utility model devises anti-sound backing 5 in the hollow wall of piezoelectric ceramic tube 6, and anti-sound backing 5 uses high intensity
Lightweight foamed plastics, because this kind of material has many tiny apertures, sound wave is internally done to be shaken repeatedly, is risen to eliminate the noise and is made
With.
In order to accurately differentiate the positive and negative electrode of hydrophone contact pin 1, hydrophone contact pin 1 is drawn on piezoelectric ceramic tube 6
"+", "-" mark are designed with the sealing material B8 end faces at place, the positive and negative electrode of mark hydrophone contact pin 1 facilitates wiring to identify, water
Device contact pin 1 is listened to ensure consistent with the polarity of piezoelectric ceramic tube 6.
The present embodiment hydrophone working frequency range：1kHz-20kHz；Acoustic pressure sensitivity of hydrophone：≥-200±3dB；Hydrophone
Risen and fallen with interior sensitivity：≤3dB；The anti-acceleration sensitivity of hydrophone：≤-40dB；Hydrophone amplitude coincidence：≤3dB（@2.5
KHz, 10 kHz, 12.5 kHz）；Hydrophone phase conformance：≤5°（@2.5 kHz, 10 kHz, 12.5 kHz）；Maximum functional
The depth 300m depth of waters（3Mpa）, piezoelectric ceramics wall thickness is 1.5mm.Piezoelectric ceramic circular tube internal diameter is 10.5mm, and external diameter is 13.5mm,
Highly it is 16.5mm.Operating environment temperature：18~30 DEG C；Ambient humidity：30%RH~60%RH.
The utility model hydrophone working frequency is 1-20kHz, is no more than 3dB with interior rise and fall, therefore hydrophone can be used
Resonant frequency far above using frequency range.In view of hydrophone finished size, hydrophone resonant frequency is chosen as 80kHz.
Have to piezoelectric ceramic tube 6：
fs=1/(πΦ) × sqrt[1/(SE 11×ρ]
Wherein：Fs---- resonant frequencies；
The average diameter of Φ --- -- piezoelectric ceramic tube 6；
SE11 QUOTE ----elastic compliance constant；
ρ --- -- bulk density.
So, the average diameter of piezoelectric ceramic tube 6 is 12mm.
Hydrophone maximum working depth is 300m, and piezoelectric ceramics wall thickness is 1.5mm.The internal diameter of piezoelectric ceramic tube 6 is 10.5mm,
External diameter is 13.5mm, is highly 16.5mm.
The low frequency sensitivity of piezoelectric ceramic tube 6 is：
M=b{g31(2+ρ)/(1+ρ)+ g33(1-ρ)/(1+ρ)}
Wherein, the inside radius of a---- piezoelectric ceramic tubes 6；
The outer radius of b---- piezoelectric ceramic tubes 6；
ρ --- the ratio between-internal-and external diameter, i.e. ρ=a/b=0.78；
g31/g33----piezoelectric constant；
That is SML=20log (M/M0)=- 198.1dB
Hydrophone sensitivity curve is as shown in Figure 5.
From shown in Fig. 5, emulation sensitivity curve understands that in 1kHz to 20kHz sensitivity average value be -199dB, with theory
Calculating matches.
The radial polarised pipe that the piezoelectric ceramic tube 6 of hydrophone is used, with axial symmetry.For transverse acceleration point
Amount, itself there is acceleration negative function, so transverse acceleration sensitivity is very low, generally below -60dB.Need in the design
What is considered is its axial acceleration sensitivity.
Single pipe axial acceleration sensitivity of piezoelectric ceramic tube 6 is：
MgL=20lgMg
Wherein, Mg=g31(M+2M1)B2t/[2π(a2-b2)2]
In formula, g31It is the piezoelectric constant of piezoelectric ceramic tube 6, a, b, t are the interior outer radius and wall of piezoelectric ceramic tube 6 respectively
It is thick.M and M1The respectively quality of the end casing of piezoelectric ceramic tube 6 and one.
So calculating MgL for -24dB.
Hydrophone technical requirement hydrophone acceleration sensitivity is not more than 40dB, so using axially symmetric design,
Reverse polarization piezoelectric ceramic tube 6.When producing axial vibration, piezoelectric ceramic tube 6 itself is because the electric charge that acceleration is produced mutually is supported
Disappear.In view of piezoelectric ceramic tube 6, mechanical structure, the asymmetry of technique, the reachable below -60dB of its acceleration sensitivity.
Claims (6)
1. one kind is applied to can moving type towed linear-array sonar hydrophone, it is characterised in that：The hydrophone has a pressure
Electroceramics pipe（6）, the piezoelectric ceramic tube（6）For hollow circular cylinder, and the hollow circular cylinder two ends are symmetrical and reverse polarization, should
Piezoelectric ceramic tube（6）Two ends are respectively provided with a cover plate, two hydrophone contact pins（1）One end passes through one of cover plate and is connected to this
Piezoelectric ceramic tube（6）Positive and negative electrode, the hydrophone contact pin（1）With its through the cover plate be provided with insulation protective jacket
（2）, the cover plate and piezoelectric ceramic tube（6）Junction is provided with sealing material A（4）, the piezoelectric ceramic tube（6）Inwall the anti-sound back of the body is set
Lining（5）, the piezoelectric ceramic tube（6）Outside sets sealing material B（8）.
2. according to claim 1, be applied to can moving type towed linear-array sonar hydrophone, it is characterised in that：Described
Piezoelectric ceramic tube（6）Material be piezopolymer.
3. according to claim 1, be applied to can moving type towed linear-array sonar hydrophone, it is characterised in that：Described
Cover plate is spherical outside surface shape.
4. according to claim 1, be applied to can moving type towed linear-array sonar hydrophone, it is characterised in that：Described
Piezoelectric ceramic tube（6）Keep concentric with two cover plates, eccentric situation must not occur.
5. according to claim 1, be applied to can moving type towed linear-array sonar hydrophone, it is characterised in that：Described
Anti- sound backing（5）Using the lightweight foamed plastics of high intensity.
6. according to claim 1, be applied to can moving type towed linear-array sonar hydrophone, it is characterised in that：The water
Listen device that hydrophone contact pin is set（1）Outer face at be provided with "+", "-" mark, mark hydrophone contact pin（1）Both positive and negative polarity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720038589.3U CN206479247U (en) | 2017-01-13 | 2017-01-13 | One kind is applied to can moving type towed linear-array sonar hydrophone |
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| CN201720038589.3U CN206479247U (en) | 2017-01-13 | 2017-01-13 | One kind is applied to can moving type towed linear-array sonar hydrophone |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449504A (en) * | 2017-09-08 | 2017-12-08 | 中国船舶重工集团公司第七〇九研究所 | A kind of pipeline hydrophone stuffing-box and its application method |
| CN112954578A (en) * | 2021-01-29 | 2021-06-11 | 中国科学院声学研究所北海研究站 | Vibration balance type low-noise deep sea hydrophone and manufacturing method thereof |
| CN114777907A (en) * | 2022-04-02 | 2022-07-22 | 中国科学院声学研究所 | Near-zero buoyancy hydrophone for underwater mobile platform and system thereof |
-
2017
- 2017-01-13 CN CN201720038589.3U patent/CN206479247U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449504A (en) * | 2017-09-08 | 2017-12-08 | 中国船舶重工集团公司第七〇九研究所 | A kind of pipeline hydrophone stuffing-box and its application method |
| CN112954578A (en) * | 2021-01-29 | 2021-06-11 | 中国科学院声学研究所北海研究站 | Vibration balance type low-noise deep sea hydrophone and manufacturing method thereof |
| CN112954578B (en) * | 2021-01-29 | 2022-07-01 | 中国科学院声学研究所北海研究站 | Vibration balance type low-noise deep sea hydrophone and manufacturing method thereof |
| CN114777907A (en) * | 2022-04-02 | 2022-07-22 | 中国科学院声学研究所 | Near-zero buoyancy hydrophone for underwater mobile platform and system thereof |
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