CN2802519Y - Small piezoelectric ceramic hydrophone - Google Patents
Small piezoelectric ceramic hydrophone Download PDFInfo
- Publication number
- CN2802519Y CN2802519Y CN 200520112455 CN200520112455U CN2802519Y CN 2802519 Y CN2802519 Y CN 2802519Y CN 200520112455 CN200520112455 CN 200520112455 CN 200520112455 U CN200520112455 U CN 200520112455U CN 2802519 Y CN2802519 Y CN 2802519Y
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- end cover
- support ring
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- pottery
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Abstract
The utility model belongs to the technical field of sonar and marine geophysical prospecting. More specifically, the utility model relates to an underwater acoustic transducer comprising an outer shell, sealing sound transparent glue, upper end covers, lower end covers, a middle support ring and piezoelectric ceramic elements. The utility model is characterized in that the piezoelectric ceramic elements are two radial piezoelectric ceramic circular tubes which have the same electric capacity and sectional electrodes; the two ceramic circular tubes are arranged coaxially on the middle support ring in the manner of the series connection of electrodes; the upper end covers and the lower end covers are respectively arranged at the upper ends and the bottom ends of the two ceramic circular tubes; two electrode columns are firmly arranged on the upper end covers; the middle support ring, the upper end covers and the lower end covers are all bound with the ceramic circular tubes so as to form an integral sealed structure. The utility model has the advantages of controllable working bandwidth, receiving voltage sensitivity and capability of static pressure resistance, stable and reliable performance, simple structure, easy manufacture, high rate of products meeting standards and low cost.
Description
Technical field
The utility model belongs to sonar and offshore geophysical prospecting field, and specifically, the utility model relates to a kind of underwater acoustic transducer.
Background technology
Towing line array plays an important role in remote probe sonar and offshore geophysical prospecting owing to have low and wide working band (several hertz to several KHz), work aperture (hundred meters supreme kms) and flexible folding and unfolding mode greatly.Constituting the towing line array unit (primitive) of towing line array---nautical receiving set is a Primary Component of realizing towing line array, and its size, performance and anti-static pressure ability are most important to excellence war skill index and the raising offshore geophysical prospecting ability that realizes the remote probe sonar.
The array element of using in towed sonar and offshore geophysical prospecting at present mainly contains two kinds of crooked disc and annulars.Crooked disc array element is the towing line array array element a kind of commonly used that develops out on the basis of crooked lamination transducer research (Wollett.R.S Theory OfPiezoelectric Flexural Disk Transducer With Application To UnderwaterSound PB 154257).The advantage of this kind array element is the less easy realization miniaturization of volume, has high reception sensitivity and certain bandwidth, and fatal weakness is the resistance to hydrostatic pressure ability, only suits to use with interior shallow sea at 50 meters.
Annular array element (Patent, U.S., 4205954,1980,5) be a kind of towing line array array element that develops on annulus nautical receiving set basis commonly used, it has the certain receiving sensitivity and the bandwidth of operation of broad, and particularly it has good anti-static pressure ability, but annular array element volume size big (towing line array that is constituted is just thicker), the too high transmission coupling of giving of impedance are brought certain difficulty, are used in large-scale water surface naval vessels towed sonar at present.
Along with the development of operational need and offshore geophysical prospecting demand to the deep-sea expansion, press for a kind of have higher receiving sensitivity, very wide working band and can be, so invention small static-pressure-resisting nautical receiving set is to realize the basis of the demand and crucial at the thin external diameter towing line array of hundreds of rice underwater operation.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, solves at present small-sized, broadband, the high sensitivity of in towed sonar and offshore geophysical prospecting demand and is suitable for the array element problem that use at the deep-sea, thereby a kind of small-sized piezoelectric pottery nautical receiving set is provided.
For realizing above-mentioned utility model purpose, the small-sized piezoelectric pottery nautical receiving set that the utility model provides, comprise shell, sealing entrant sound glue, upper end cover, bottom end cover, piezo ceramic element, it is characterized in that, also comprise support ring in, described piezo ceramic element is the radial polarised piezoelectric ceramic circular tube of the electrode segment of two electric capacity unanimities (electric capacity consistance≤± 7.5%); Described two ceramic pipe arranged in co-axial alignment are installed on the middle support ring by the electrode series system; Upper end cover, bottom end cover are installed in the upper and lower side of two ceramic pipes respectively; Two electrode columns firmly are installed on the upper end cover; Support ring, upper end cover, bottom end cover all carry out bondingly with ceramic pipe in described, form holistic enclosed construction; The outer coated one deck sealing entrant sound glue of described enclosed construction is installed a metal shell outside sealing entrant sound glue.
In the technique scheme, described radial polarised piezoelectric ceramic circular tube inwall has two segmented electrodes, and wherein one is positive electrode, and one is negative electrode, and the gap between two segmented electrodes is 1mm.
In the technique scheme, described upper end cover, bottom end cover, middle support ring are made by the expoxy glass rod.
In the technique scheme, described sealing entrant sound glue is to utilize mould to carry out watertight and the entrant sound coating that forms after the vulcanizing treatment.
In the technique scheme, described two radial polarised piezoelectric ceramic circular tube, its adjacent positive and negative electrode that is arranged in the support ring two ends connects with thin wire, and two other electrode is connected on the electrode column respectively.
In the technique scheme, described radial polarised piezoelectric ceramic circular tube, its length are 5 to 15mm, and internal diameter is 2 to 5mm, should adopt reception type lead titanate piezoelectric ceramics prescription and production technology (as PZT-5) manufacturing piezoelectric ceramic circular tube.
Major advantage of the present utility model is:
A) array element of the present utility model is by two piezoelectricity sensors, and two kinds of 8 machined piece are formed.Piezoelectricity sensor in the utility model is the radial polarised piezoelectric ceramic circular tube of electrode segment, and other machined piece are a copper shell, a pair of copper cover plate, a pair of copper electrode post and with end cap and a middle support ring about glass epoxide made a pair of up and down.The installation of array element and testing and measuring technology are easily gone, and required moulds of industrial equipment are few, and each step has controllability and auditability, can guarantee high production yield.
B) have bandwidth of operation, receiving voltage sensitivity and the anti-static pressure ability that to control, can manufacture and design according to the actual requirements.
The size of this array element, bandwidth of operation, receiving voltage sensitivity and anti-static pressure the ability all interior external radius (a, b) with the radial polarised pipe of electrode segment are relevant with length l, have ripe accurate method of calculation, can design the array element that satisfies different requirements by inside radius a, external radius b and the length l of comprehensive adjustment pipe.
C) stable and reliable for performance.
Its main performance index variation of repetition measurement after the array element of the piezoelectricity sensor being carried out assemble after the burin-in process is used 3 years≤± 1dB.
Description of drawings
Fig. 1 is the radial polarised pipe synoptic diagram of electrode segment in the utility model;
Fig. 2 is the small-sized piezoelectric pottery nautical receiving set inner structure synoptic diagram in the utility model;
Fig. 3 is the small-sized piezoelectric pottery nautical receiving set shell scheme of installation in the utility model;
Fig. 4 is the small-sized piezoelectric pottery nautical receiving set complete structure synoptic diagram in the utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done to describe further.
Small-sized piezoelectric pottery nautical receiving set is to be a kind of novel towing array element that primary element constitutes with the radial polarised piezoelectric ceramic circular tube, and its structure is shown in Fig. 2,3.The radial polarised piezoelectric ceramic circular tube of two electrode segment as shown in Figure 1 is to realize one of gordian technique of the present utility model.The purpose that adopts electrode segment is in order to improve the receiving sensitivity of array element, bandwidth of operation when reducing radial polarised piezoelectric ceramic circular tube size.The size of array element, bandwidth of operation, receiving voltage sensitivity and anti-static pressure the ability all interior external radius (a, b) with the radial polarised pipe of electrode segment are relevant with length l, have ripe accurate method of calculation, can design the array element that satisfies different requirements by inside radius a, external radius b and the length l of comprehensive adjustment pipe.
Shown in Fig. 2,3,4, make a collection of small size piezoelectric ceramic hydrophone (array element).This batch array element adopts " PZT-5 " type piezoceramic material to make the radial polarised pipe (as shown in Figure 1) of electrode segment, each array element adopts two radial polarised pipes, be called piezoelectricity pipe 4, lower piezoelectric pipe 6, in general, the piezoelectricity pipe that the utility model adopted long 5 to 15mm, internal diameter is 2 to 5mm, the gap of its segmented electrode is 1 to 2mm, in the present embodiment, the external radius a of piezoelectricity pipe is 5mm, inside radius b is 4.2mm, and length l is 10mm, and the segmented electrode gap d is 1mm.Require the piezoelectric coefficient d of pipe
33〉=420, two pipe electric capacity consistance are controlled at ± 7.5% within.Adopt the expoxy glass rod to make upper end cover 2, bottom end cover 7 and middle support ring 5, the processing of cleaning before the use and heat.Can adopt epoxy bond technology or additive method that first electrode column 1 and second electrode column 9 are installed on the upper end cover 2.Shell 10 is made up of the cylindrical shell of two ends band concave station and cover plate up and down with holes, and the external diameter of shell is that 15mm, internal diameter are 14.4mm, length 30mm, and upper and lower covers thickness of slab 0.4mm all makes with brass material.The array element that surpasses 5kHz for the frequency of operation upper limit can be taked the measure of dozen round on the cylindrical shell wall, so that reduce the high-frequency transmission loss.Sealing entrant sound glue 3 (i.e. sulfuration " watertight and entrant sound coating ") adopts JA-S casting type polyurethane sound transmitting rubber material and related process.
Ready components and parts are assembled in the following order:
(1) respectively welds the long seven core thin wires of a 30mm at the positive electrode bottom and the negative electrode middle part of last piezoelectricity pipe 4, at the long seven core thin wires of 50mm of negative electrode middle part weldering of lower piezoelectric pipe.
(2) support ring was welded on the positive electrode of lower piezoelectric pipe during the negative electrode lead that will go up the piezoelectricity pipe passed, and the negative electrode lead of lower piezoelectric pipe 6 passes middle support ring 5, and daub (as the normal temperature epoxy cementing agent) compresses the lower piezoelectric pipe on middle support ring 5 steps.
(3) the positive and negative electrode lead-in wire that will go up the lower piezoelectric pipe twines the electrode column lower end that is welded on upper end cover, and the two ends of end cap step daub and last lower piezoelectric pipe compress up and down, and firm for making solder joint, all solder joints should be taked safeguard measure.
(4) standard that installs and solidified " array element " is carried out electric capacity and insulation resistance inspection, stand-by after the eligible clean surface.
(5) standard " array element " is packed into mould is poured into a mould by " JA-S casting type polyurethane sound transmitting rubber " related process.Check after the demoulding whether sulfuric horizon does not evenly have bubble, eligible is repaiied behind the burr stand-by.
(6) the cylindrical copper shell of packing into of the standard " array element " after will vulcanizing is installed lower cover and two ends is killed after the adhesive curing of strong point point.Attention array element will be laid and is fixed on cylindrical shell middle part, and electrode column is contacted with upper cover plate.
(7) Performance Detection:
1. with reaching the insulation resistance of positive and negative electrode between 100V megger potential electrode to shell.
2. use the electric capacity between the capacitance meter potential electrode.
3. adopt working band, receiving voltage sensitivity response and the anti-static pressure ability of national standard " measurement of GB 7965-87 underwater sound underwater acoustic transducer " and " GB 4130-84 nautical receiving set low-frequency calibration method " test array element.
4. adopt bumper and standard accelerometer to measure the acceleration sensitivity response of array element.
5. adopt phasometer in even sound field, to measure the phase differential of array element.
Made a collection of small size piezoelectric ceramic hydrophone (array element) by above-mentioned utility model, measurement result is as follows:
1. reach the insulation resistance 〉=200M Ω of positive and negative electrode between electrode to shell.
2. electric capacity C
o=515 ± 25pf
3. operating frequency range: 5Hz-20kHz
Receiving voltage sensitivity: M=-189 ± 1dB (0dB=1V/ μ Pa; 5-2000Hz)
M＝-189±1.5dB (0dB＝1V/μPa；5-20000Hz)
4. array element is held static pressure ability 〉=5Mpa; Receiving sensitivity with pressure change≤± the acceleration sensitivity response of 0.5dB (in the 4Mpa) array element≤-50dB (0dB=1V/g; 10-5000Hz).
5. the phase differential between each array element≤± 1.5 °
Sensitivity between each array element-causing property≤± 1.5dB
6. physical dimension: φ 15 * 30mm
7. drop into 225 cover small size piezoelectric ceramic hydrophone (array element) components and parts, make finish after after testing certified products be 203, qualification rate 90%.
Assemble out built-in 75 array elements with the small size piezoelectric ceramic hydrophone (array element) that the utility model is made, external diameter φ 37mm or φ 45mm, 100 meters long tow line arrays also show excellent performance in the test at sea.
Claims (8)
1, a kind of small-sized piezoelectric pottery nautical receiving set comprises shell, sealing entrant sound glue, upper end cover, bottom end cover, piezo ceramic element, it is characterized in that, also comprises support ring in; Described piezo ceramic element is the radial polarised piezoelectric ceramic circular tube of the electrode segment of two electric capacity unanimities; Described two ceramic pipe arranged in co-axial alignment are installed on the middle support ring by the electrode series system; Upper end cover, bottom end cover are installed in the upper and lower side of two ceramic pipes respectively; Two electrode columns are installed on the upper end cover; Support ring, upper end cover, bottom end cover all carry out bondingly with ceramic pipe in described, form holistic enclosed construction; The outer coated one deck sealing entrant sound glue of described enclosed construction is installed an entrant sound screening can outside sealing entrant sound glue.
2, by the described small-sized piezoelectric pottery of claim 1 nautical receiving set, it is characterized in that described radial polarised piezoelectric ceramic circular tube inwall has two segmented electrodes, wherein one is positive electrode, and one is negative electrode.
By the described small-sized piezoelectric of claim 2 pottery nautical receiving set, it is characterized in that 3, the gap between described two segmented electrodes is 1 to 2mm.
By the described small-sized piezoelectric pottery of claim 1 nautical receiving set, it is characterized in that 4, described upper end cover, bottom end cover, middle support ring are made by the expoxy glass rod.
5, by the described small-sized piezoelectric of claim 1 pottery nautical receiving set, it is characterized in that, described sealing entrant sound glue be utilize mould pour into a mould and vulcanizing treatment after the watertight and the entrant sound coating that form.
6, by claim 1,2 or 3 described small-sized piezoelectric pottery nautical receiving sets, it is characterized in that, described two radial polarised piezoelectric ceramic tubes, its adjacent positive and negative electrode that is arranged in the support ring two ends connects with thin wire, and two other electrode is connected on the electrode column respectively.
By claim 1,2 or 3 described small-sized piezoelectrics pottery nautical receiving sets, it is characterized in that 7, described radial polarised piezoelectric ceramic circular tube, its length are 5 to 15mm, internal diameter is 2 to 5mm.
8, by claim 1,2 or 3 described small-sized piezoelectric pottery nautical receiving sets, it is characterized in that described radial polarised piezoelectric ceramic circular tube adopts reception type lead lanthanum zirconate titanate (PLZT) electrooptical ceramics material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520112455 CN2802519Y (en) | 2005-07-06 | 2005-07-06 | Small piezoelectric ceramic hydrophone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520112455 CN2802519Y (en) | 2005-07-06 | 2005-07-06 | Small piezoelectric ceramic hydrophone |
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| Publication Number | Publication Date |
|---|---|
| CN2802519Y true CN2802519Y (en) | 2006-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200520112455 Expired - Fee Related CN2802519Y (en) | 2005-07-06 | 2005-07-06 | Small piezoelectric ceramic hydrophone |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105323685A (en) * | 2015-06-09 | 2016-02-10 | 中国科学院声学研究所 | Full-depth low-frequency broadband highly-sensitive piezoelectric hydrophone |
| CN108431627A (en) * | 2015-12-25 | 2018-08-21 | 株式会社电装 | Ultrasonic sensor |
| CN109060110A (en) * | 2018-10-19 | 2018-12-21 | 海鹰企业集团有限责任公司 | A kind of piezoelectric circular hydrophone of small size, high receiving sensitivity |
| CN109782260A (en) * | 2019-03-13 | 2019-05-21 | 海鹰企业集团有限责任公司 | A method of reducing linear array secondary lobe |
| CN110702213A (en) * | 2019-10-15 | 2020-01-17 | 海鹰企业集团有限责任公司 | Small high-sensitivity hydrophone |
| CN112683388A (en) * | 2021-01-13 | 2021-04-20 | 山东省科学院海洋仪器仪表研究所 | Circular tube vector hydrophone |
-
2005
- 2005-07-06 CN CN 200520112455 patent/CN2802519Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105323685A (en) * | 2015-06-09 | 2016-02-10 | 中国科学院声学研究所 | Full-depth low-frequency broadband highly-sensitive piezoelectric hydrophone |
| CN105323685B (en) * | 2015-06-09 | 2018-05-22 | 中国科学院声学研究所 | A kind of piezoelectric hydrophone of full depth of water broad band low frequency high sensitivity |
| CN108431627A (en) * | 2015-12-25 | 2018-08-21 | 株式会社电装 | Ultrasonic sensor |
| CN108431627B (en) * | 2015-12-25 | 2021-12-14 | 株式会社电装 | Ultrasonic sensor |
| CN109060110A (en) * | 2018-10-19 | 2018-12-21 | 海鹰企业集团有限责任公司 | A kind of piezoelectric circular hydrophone of small size, high receiving sensitivity |
| CN109782260A (en) * | 2019-03-13 | 2019-05-21 | 海鹰企业集团有限责任公司 | A method of reducing linear array secondary lobe |
| CN109782260B (en) * | 2019-03-13 | 2021-07-20 | 海鹰企业集团有限责任公司 | Method for reducing linear array side lobe |
| CN110702213A (en) * | 2019-10-15 | 2020-01-17 | 海鹰企业集团有限责任公司 | Small high-sensitivity hydrophone |
| CN112683388A (en) * | 2021-01-13 | 2021-04-20 | 山东省科学院海洋仪器仪表研究所 | Circular tube vector hydrophone |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060802 Termination date: 20100706 |