CN201467422U - Double-side longitudinal-vibration deepwater transmitting transducer - Google Patents
Double-side longitudinal-vibration deepwater transmitting transducer Download PDFInfo
- Publication number
- CN201467422U CN201467422U CN2009200874950U CN200920087495U CN201467422U CN 201467422 U CN201467422 U CN 201467422U CN 2009200874950 U CN2009200874950 U CN 2009200874950U CN 200920087495 U CN200920087495 U CN 200920087495U CN 201467422 U CN201467422 U CN 201467422U
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Abstract
The utility model relates to a double-side longitudinal-vibration deepwater transmitting transducer which has the main structure that a double-side symmetrical longitudinal-vibration transducer is mounted in an acoustic rigid cylindrical casing; and the casing is full of liquid which is communicated with surrounding liquid through a communicating pipe on the lateral side of the cylindrical casing to form a Helmholtz resonator. With the structure, the transducer has a large power capacity in low frequency; and can utilize the coupling between longitudinal vibration frequency and Helmholtz resonance frequency to realize broadband property. The liquid cavity acoustic property of the transducer can be adjusted through acoustic compliance pipe distribution. The transducer can provide a low-frequency sound source for ocean acoustic long distance transmission research, has transmission distance of over 700 kilometers in the depth of about 1,000 meters, and is a large power sound source having important use value in technical fields of ocean acoustic tomography, ocean acoustic environmental monitoring, ocean acoustic exploration and the like.
Description
Technical field
The utility model relates to a kind of acoustic transducer that can use in thousands of meters dark deep-seas.It can be low frequency or very low frequency electrical signal conversion to water-borne acoustic signals, is the marine acoustics chromatography, and the marine acoustics environmental monitoring has the high-power sound source of important use value in the technical fields such as marine acoustics exploration.
Background technology
Sound wave is the most effective information carrier in the water, and underwater acoustic transducer is to realize important senser element in military, the civilian sonar such as is detected in hydrospace detection, navigation, communication, seabed.
Summary of the invention
The purpose of this utility model is will provide a kind of low frequency or very low frequency electrical signal conversion are the two-sided extensional vibration deep water transmitting transducer to water-borne acoustic signals.
The purpose of this utility model is achieved in that a kind of two-sided extensional vibration deep water transmitting transducer, comprise housing, the acoustic compliance pipe is housed in the housing, and housing is provided with a plurality of communicating pipes that communicate with housing, is provided with the oscillator that is made of a plurality of piezoelectric ceramic piece parallel connections in the housing.Oscillator is two-sided symmetrical structure.
The two-sided extensional vibration deep water transmitting transducer that the utility model provides is that the extensional vibration transducer of a two-sided symmetry is installed in the cylindrical shell of a sound rigidity.Be full of fluid in the housing.These fluids are communicated with surrounding fluid communicating pipe by cylindrical side, and form a Helmholtz resonator, owing to adopt with this structure, this device has very big power capacity under low frequency; And utilize the coupling between extensional vibration frequency and the Helmholtz resonance frequency to realize broad band performance.Transducer sap cavity acoustical behavior can lay by the acoustic compliance pipe and regulate.The low-frequency sound source that this device provides can be used for ocean sound wave long-distance communications research, about 1000 meters of the degree of depth, propagation distance reaches more than the 700KM, is the marine acoustics chromatography, the marine acoustics environmental monitoring has the high-power sound source of important use value in the technical fields such as marine acoustics exploration.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is a structural representation of the present utility model.
Embodiment
As shown in Figure 1, the utility model comprises housing 1, and acoustic compliance pipe 3 is housed in the housing 1, and housing 1 is provided with a plurality of communicating pipes 5 that communicate with housing 1, is provided with the oscillator 2 that is made of a plurality of piezoelectric ceramic piece parallel connections in the housing 1.Oscillator 2 is two-sided symmetrical structure.
In the utility model, housing 1 adopts cylindrical structural, it is welded with by heavy wall stainless steel cylindrical housings and side forms a plurality of cylindrical communicating pipes 5, communicating pipe 5 also can be designed to poroid. and housing 1 is the vitals that constitutes helmholtz resonance on acoustics, the wall thickness of housing will satisfy rigid boundary condition. and oscillator 2 is by a plurality of piezoelectric ceramic pieces and radiation head, applying the prestressing force assembling by bolt after utilizing the high-temp epoxy glue bond. potsherd all is connected in parallel, draw "+", "-" electrode wires, and put into baking oven, insulation drops to room temperature after 4 hours naturally under 80 degree temperature, solidify the back and twine epoxy glass fabric on piezoelectric ceramic out-pile surface, put into baking oven, insulation was solidified in 4 hours under 80 degree temperature. and with neoprene oscillator and cable are drawn at last and vulcanize sealing. with housing 1 with oscillator 2 assembles and encapsulation obtains this transducer.
The utility model is full of fluid 4 in use in the housing 1.Fluid 4 is communicated with surrounding fluid communicating pipe 5 by cylindrical shell 1 side, and forms a Helmholtz resonator, and utilizes the coupling between extensional vibration frequency and the Helmholtz resonance frequency to realize broad band performance.Transducer sap cavity acoustical behavior can lay by acoustic compliance pipe 3 and regulate.The low-frequency sound source that this device provides can be used for ocean sound wave long-distance communications research, and about 1000 meters of the degree of depth, propagation distance reaches more than the 700KM.
This transducer operating frequency is from 200～800Hz.Its main electroacoustic index is:
1) operating frequency: 200～800Hz;
2) sound source level: at resonance frequency place, SL 〉=190dB; In frequency band, SL 〉=183dB;
3) operating voltage (effective value): 2500V;
4) depth of water: 〉=1000 meters;
5) the about 97Kg of weight in the air; Overall dimension: Ф 300mmxH550mm.
Claims (2)
1. two-sided extensional vibration deep water transmitting transducer, comprise housing (1), it is characterized in that: acoustic compliance pipe (3) is housed in the housing (1), and housing (1) is provided with a plurality of communicating pipes (5) that communicate with housing (1), is provided with the oscillator (2) that is made of a plurality of piezoelectric ceramic piece parallel connections in the housing (1).
2. two-sided extensional vibration deep water transmitting transducer according to claim 1 is characterized in that: oscillator (2) is two-sided symmetrical structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200874950U CN201467422U (en) | 2009-07-22 | 2009-07-22 | Double-side longitudinal-vibration deepwater transmitting transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200874950U CN201467422U (en) | 2009-07-22 | 2009-07-22 | Double-side longitudinal-vibration deepwater transmitting transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201467422U true CN201467422U (en) | 2010-05-12 |
Family
ID=42394768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200874950U Expired - Lifetime CN201467422U (en) | 2009-07-22 | 2009-07-22 | Double-side longitudinal-vibration deepwater transmitting transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201467422U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102568464A (en) * | 2011-12-31 | 2012-07-11 | 北京长城电子装备有限责任公司 | Underwater transducer for deepwater |
| CN104282299A (en) * | 2013-07-12 | 2015-01-14 | 中国科学院声学研究所 | Longitudinal vibration Helmholtz deepwater low-frequency bandwidth transducer |
-
2009
- 2009-07-22 CN CN2009200874950U patent/CN201467422U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102568464A (en) * | 2011-12-31 | 2012-07-11 | 北京长城电子装备有限责任公司 | Underwater transducer for deepwater |
| CN102568464B (en) * | 2011-12-31 | 2013-08-21 | 北京长城电子装备有限责任公司 | Underwater transducer for deepwater |
| CN104282299A (en) * | 2013-07-12 | 2015-01-14 | 中国科学院声学研究所 | Longitudinal vibration Helmholtz deepwater low-frequency bandwidth transducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100512 |