CN203464995U - Piezoelectric hydrophone - Google Patents
Piezoelectric hydrophone Download PDFInfo
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- CN203464995U CN203464995U CN201320582170.6U CN201320582170U CN203464995U CN 203464995 U CN203464995 U CN 203464995U CN 201320582170 U CN201320582170 U CN 201320582170U CN 203464995 U CN203464995 U CN 203464995U
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Abstract
The utility model relates to a piezoelectric hydrophone comprising a sheath, an output impedance matching device, a waterproof plug and an energy conversion module arranged inside the sheath. The energy conversion module includes a piezoelectric ceramic energy-conversion element, a first copper substrate and a second copper substrate; the first copper substrate, the piezoelectric ceramic energy-conversion element, and the second copper substrate are successively superposed; a silicone rubber is arranged between the first copper substrate and the second copper substrate; and the piezoelectric ceramic energy-conversion element is connected with the waterproof plug by the output impedance matching device. The provided piezoelectric hydrophone has the advantages of high sensitivity and high effective job depth.
Description
Technical field
The utility model belongs to passive detection technical field, relates to a kind of piezoelectric hydrophone, relates in particular to a kind of high sensitivity low frequency piezoelectric hydrophone.
Background technology
The quick expansion of modern offshore oil exploration, increasing to Yu Haiyang piezoelectric seismometer demand, particularly the scale along with high precision seafari constantly expands, more strong for the demand of high performance nautical receiving set.
Accuracy and the reliability of original earthquake data depend primarily on seismoreceiver, so nautical receiving set has very important effect for seafari work.The nautical receiving set market of using at present is both at home and abroad monopolized by external several large manufacturers mostly, domesticly can meet at present geologic prospecting is highly sensitive, LF-response good, resolution is high nautical receiving set temporarily without relevant matured product.
Piezoelectric hydrophone is comprised of piezoelectric energy-conversion element, impedance matching box, damping resistance.Mainly there is the shortcomings such as sensitivity is low, natural frequency is high, dynamic range is little at present existing nautical receiving set, the piezoelectric energy-conversion number of elements of one-sided acceptance is few, and the ability of single-point transducing information causes test parameter unstable.Particularly in existing nautical receiving set, adaptation adopts conventional magnetic core more, cause its primary inductance value lower, inductance value is directly proportional to free-running frequency point, thereby affects the whole free-running frequency point of nautical receiving set, cause low frequency signal responding ability poor, affect entirely precision and the accuracy of seismic exploration.
Utility model content
In order to solve the above-mentioned technical matters existing in background technology, the utility model provides a kind of high sensitivity and effective high piezoelectric hydrophone of working depth.
Technical solution of the present utility model is: the utility model provides a kind of piezoelectric hydrophone, and its special character is: described piezoelectric hydrophone comprises sheath, output impedance adaptation, waterproof plug and the inverting model that is arranged on sheath inside; Described inverting model comprises piezoelectric ceramics inverting element, the first copper base and the second copper base; Described the first copper base, piezoelectric ceramics inverting element and the second copper base are superimposed successively; Between described the first copper base and the second copper base, be provided with silicon rubber; Described piezoelectric ceramics inverting element is connected with waterproof plug by output impedance adaptation.
Above-mentioned inverting model is two; Described two inverting models are symmetricly set on sheath inside.
Above-mentioned output impedance adaptation comprises adaptation and damping resistance; Described piezoelectric ceramics inverting element is successively by adaptation and damping resistance access waterproof plug.
Above-mentioned piezoelectric hydrophone also comprises pressing line disk; Described output impedance adaptation accesses waterproof plug by pressing line disk.
Above-mentioned sheath is to adopt the made sheath of acoustic window material.
Above-mentioned piezoelectric hydrophone also comprises the protective case that is arranged on sheath, output impedance adaptation and pressing line disk outside; Described protective case is by adopting acoustic window material casting sealing moulding.
The utility model has the advantages that:
The utility model provides a kind of piezoelectric type nautical receiving set, and this piezoelectric type nautical receiving set is to utilize piezoelectric ceramics after being subject to external force, on two surface, produces the contrary electric charge of quantity equal symbol, produced electromotive force, adopt novel magnetic core, can realize super large inductance value, guarantee nautical receiving set LF-response.Nautical receiving set provided by the utility model adopts novel exterior mechanical structure, in resonant cavity both sides, all has inverting element, guarantees the Integrity And Reliability of acknowledge(ment) signal, and can improve the sensitivity of output; Adopt disymmetry structure, improved the ability of nautical receiving set resistance to hydrostatic pressure, improved working depth, and can eliminate the interference of the generation acceleration sensitivity in nautical receiving set work; Adopt novel amorphous band alloy magnetic core, make more than adaptation primary inductance value can reach 6000H, more than maximum can reach 10000H, and leakage inductance is minimum, and efficiency is high, guarantee the LF-response of nautical receiving set, and transfer efficiency is high; Inside, by the syntagmatic of piezoelectric ceramics, reduces inner self noise, by damping resistance, makes nautical receiving set reach reasonable damping, has improved the resolution of signal; Whole adopt special-purpose underwater acoustic transmission material injection moulding one-shot forming, sound translative performance is good, seals reliable and stablely, can work under water for a long time, and whole service life is long; Piezoelectric hydrophone is passive seismometer, without power supply is provided, and use that can be permanently effective.
Accompanying drawing explanation
Fig. 1 is the structural representation of nautical receiving set provided by the utility model;
Wherein:
Protective case under 1-; 2-piezoelectric ceramics inverting element; 3-resonant cavity; 4-output impedance adaptation; 5-pressing line disk; 6-sheath; The upper protective case of 7-; 8-waterproof plug.
Embodiment
Referring to accompanying drawing, specifically embodiment of the present utility model is described further.
Referring to Fig. 1, the utility model provides a kind of piezoelectric hydrophone, and this piezoelectric hydrophone comprises sheath 6, output impedance adaptation 4, waterproof plug 8 and the inverting model that is arranged on sheath 6 inside; There is resonant cavity 3 sheath 6 inside; Resonant cavity 3 comprises the first copper base and the second copper base; The common inverting model that forms of piezoelectric ceramics inverting element 2 and resonant cavity 3; The first copper base, piezoelectric ceramics inverting element 2 and the second copper base are superimposed successively; Between the first copper base and the second copper base, be provided with silicon rubber; Piezoelectric ceramics inverting element 2 is connected with waterproof plug 8 by output impedance adaptation 4.
Inverting model is two; Two inverting models are symmetricly set on sheath 6 inside.
Output impedance adaptation 4 comprises adaptation and damping resistance; Piezoelectric ceramics inverting element 2 is successively by adaptation and damping resistance access waterproof plug 8.
Piezoelectric hydrophone also comprises pressing line disk 5; Output impedance adaptation 4 is by pressing line disk 5 access waterproof plugs 8.
Sheath 6 is to adopt the made sheath 6 of acoustic window material.
Piezoelectric hydrophone also comprises the protective case that is arranged on sheath 6, output impedance adaptation 4 and pressing line disk 5 outsides; Protective case is by adopting acoustic window material casting sealing moulding, protective case comprise lower protective case 1 and with lower protective case 1 all-in-one-piece on protective case 7.
Output impedance adaptation 4 is mainly the output impedance that reduces piezoelectric ceramics inverting element, improve the ability that nautical receiving set passes to the signal of accepting instrument, by magnetic core and primary and secondary coil, formed, magnetic core adopts annular amorphous band, primary inductance is larger than the inductance of conventional magnetic core, can reduce the free-running frequency point of nautical receiving set.Output lead is repeatedly coiling on pressing line disk 5, and the tension of protection cable is dragged ability, protection nautical receiving set dependability in work progress.
Piezoelectric ceramics inverting element 2 is arranged on 6 li of special-purpose acoustic window material sheaths with the inverting model that resonant cavity 3 forms, output impedance adaptation 4 side mounted thereto, inverting model adopts symmetrical structure, in a resonant cavity, a pair of energy transducer is installed, while working under water, be subject to Underwater Pressure symmetrically, improved working depth.Have two resonant cavities, also adopt symmetrical structure, eliminate the impact of acceleration measurement response.Adaptation side mounted thereto, is connected with outside output cable by pressing line disk, special-purpose underwater acoustic transmission material sealing injection moulding for inner body.
Claims (6)
1. a piezoelectric hydrophone, is characterized in that: described piezoelectric hydrophone comprises sheath, output impedance adaptation, waterproof plug and the inverting model that is arranged on sheath inside; Described inverting model comprises piezoelectric ceramics inverting element, the first copper base and the second copper base; Described the first copper base, piezoelectric ceramics inverting element and the second copper base are superimposed successively; Between described the first copper base and the second copper base, be provided with silicon rubber; Described piezoelectric ceramics inverting element is connected with waterproof plug by output impedance adaptation.
2. piezoelectric hydrophone according to claim 1, is characterized in that: described inverting model is two; Described two inverting models are symmetricly set on sheath inside.
3. piezoelectric hydrophone according to claim 1 and 2, is characterized in that: described output impedance adaptation comprises adaptation and damping resistance; Described piezoelectric ceramics inverting element is successively by adaptation and damping resistance access waterproof plug.
4. piezoelectric hydrophone according to claim 3, is characterized in that: described piezoelectric hydrophone also comprises pressing line disk; Described output impedance adaptation accesses waterproof plug by pressing line disk.
5. piezoelectric hydrophone according to claim 4, is characterized in that: described sheath is to adopt the made sheath of acoustic window material.
6. piezoelectric hydrophone according to claim 5, is characterized in that: described piezoelectric hydrophone also comprises the protective case that is arranged on sheath, output impedance adaptation and pressing line disk outside; Described protective case is by adopting acoustic window material casting sealing moulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320582170.6U CN203464995U (en) | 2013-09-18 | 2013-09-18 | Piezoelectric hydrophone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320582170.6U CN203464995U (en) | 2013-09-18 | 2013-09-18 | Piezoelectric hydrophone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203464995U true CN203464995U (en) | 2014-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320582170.6U Expired - Lifetime CN203464995U (en) | 2013-09-18 | 2013-09-18 | Piezoelectric hydrophone |
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| CN (1) | CN203464995U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568115A (en) * | 2014-12-31 | 2015-04-29 | 北京长城电子装备有限责任公司 | Multi-purpose small-sized deep water data recording instrument |
| CN105675119A (en) * | 2016-03-17 | 2016-06-15 | 西安陆洲智能传感技术有限公司 | Low-frequency underwater piezoelectric detector |
| CN105841798A (en) * | 2016-05-12 | 2016-08-10 | 重庆医科大学 | High sensitivity hydrophone used for sound wave detection |
| CN106404158A (en) * | 2016-08-31 | 2017-02-15 | 北京越音速科技有限公司 | Hydrophone, transduction method and hydrophone device |
| CN107167838A (en) * | 2017-05-25 | 2017-09-15 | 西安思坦测控技术有限公司 | A kind of land vibroseis target positioning piezo-type sensor |
| CN107631791A (en) * | 2017-08-07 | 2018-01-26 | 国家电网公司 | A kind of sensor for monitoring oil-filled transformer noise |
| CN110940968A (en) * | 2019-12-16 | 2020-03-31 | 西北工业大学 | Low-frequency low-noise piezoelectric vector sensor |
-
2013
- 2013-09-18 CN CN201320582170.6U patent/CN203464995U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568115A (en) * | 2014-12-31 | 2015-04-29 | 北京长城电子装备有限责任公司 | Multi-purpose small-sized deep water data recording instrument |
| CN105675119A (en) * | 2016-03-17 | 2016-06-15 | 西安陆洲智能传感技术有限公司 | Low-frequency underwater piezoelectric detector |
| CN105841798A (en) * | 2016-05-12 | 2016-08-10 | 重庆医科大学 | High sensitivity hydrophone used for sound wave detection |
| CN105841798B (en) * | 2016-05-12 | 2019-05-14 | 重庆医科大学 | Highly sensitive hydrophone for sonic detection |
| CN106404158A (en) * | 2016-08-31 | 2017-02-15 | 北京越音速科技有限公司 | Hydrophone, transduction method and hydrophone device |
| CN107167838A (en) * | 2017-05-25 | 2017-09-15 | 西安思坦测控技术有限公司 | A kind of land vibroseis target positioning piezo-type sensor |
| CN107631791A (en) * | 2017-08-07 | 2018-01-26 | 国家电网公司 | A kind of sensor for monitoring oil-filled transformer noise |
| CN107631791B (en) * | 2017-08-07 | 2019-09-10 | 国家电网公司 | A kind of sensor monitoring oil-immersed transformer noise |
| CN110940968A (en) * | 2019-12-16 | 2020-03-31 | 西北工业大学 | Low-frequency low-noise piezoelectric vector sensor |
| CN110940968B (en) * | 2019-12-16 | 2022-12-13 | 海卓科(浙江自贸区)科技有限公司 | Low-frequency low-noise piezoelectric vector sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170612 Address after: 710065, three floor, building three, Si Tan Industrial Park, 22 five road, hi tech Zone, Shaanxi, Xi'an Patentee after: XI'AN SITAN MEASUREMENT AND CONTROL TECHNOLOGY CO.,LTD. Address before: 710065 No. 22, No. five, hi tech Development Zone, Shaanxi, Xi'an Patentee before: Xi'an Sitan Instruments Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190705 Address after: 710065 No. 22 Science and Technology Fifth Road, Xi'an High-tech Zone, Shaanxi Province Patentee after: Xi'an Sitan Instruments Co.,Ltd. Address before: 710065 Third Floor of No.3 Building, Stan Industrial Park, 22 Science and Technology Fifth Road, Xi'an High-tech Zone, Shaanxi Province Patentee before: XI'AN SITAN MEASUREMENT AND CONTROL TECHNOLOGY CO.,LTD. |
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| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140305 |
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| CX01 | Expiry of patent term |