CN104811879A - Multi-piezoelectric-ceramic-stack excitation deepwater broadband energy converter - Google Patents
Multi-piezoelectric-ceramic-stack excitation deepwater broadband energy converter Download PDFInfo
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- CN104811879A CN104811879A CN201410033314.1A CN201410033314A CN104811879A CN 104811879 A CN104811879 A CN 104811879A CN 201410033314 A CN201410033314 A CN 201410033314A CN 104811879 A CN104811879 A CN 104811879A
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- end cover
- ceramic stack
- cylindrical end
- piezoelectric ceramic
- deep water
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- 230000005284 excitation Effects 0.000 title claims abstract description 10
- 239000000919 ceramic Substances 0.000 claims abstract description 61
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 230000005540 biological transmission Effects 0.000 claims description 7
- 239000004359 castor oil Substances 0.000 claims description 6
- 235000019438 castor oil Nutrition 0.000 claims description 6
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims description 6
- 239000011810 insulating material Substances 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229920002545 silicone oil Polymers 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000004636 vulcanized rubber Substances 0.000 claims description 3
- 238000004078 waterproofing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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Abstract
The invention relates to a multi-piezoelectric-ceramic-stack excitation deepwater broadband energy converter. The multi-piezoelectric-ceramic-stack excitation deepwater broadband energy converter comprises multiple piezoelectric ceramic stacks, a lower tubular end cap, pre-stress screw rod and an upper tubular end cap, wherein any one piezoelectric ceramic stack is installed between the lower tubular end cap and the upper tubular end cap through the pre-stress screw rod, and the multiple piezoelectric ceramic stacks are connected in parallel; and an interval is reserved between the top end of the lower tubular end cap and the bottom end of the upper tubular end cap. According to the invention, by use of multi-modal vibration of the piezoelectric stacks, an upper end plate and a lower end plate, large-broadband emission of the energy converter is realized, by use of the 33 work mode of the multiple piezoelectric stacks, the problems of quite large emission and reduced response which are brought by the anti-phase problem due to radial vibration of a circular pipe structure are reduced, and large-power emission is obtained.
Description
Technical Field
The invention relates to the field of underwater acoustic communication, detection and ocean deep water research, in particular to a multi-piezoelectric ceramic stack excitation deep water broadband transducer.
Background
The 21 st century is the ocean century, and the underwater acoustic transducer is an important means for understanding the ocean and has wide application in the fields of underwater acoustic communication, exploration and ocean deep water research. At present, the importance of various oceanic resource countries on ocean resources and ocean territories is unprecedented, and deep sea development technology has become a hotspot, so that the underwater acoustic transducer is required to work under the deep water condition. This puts higher demands on the performance of the underwater acoustic transducer.
The traditional deep water broadband piezoelectric circular tube transducer adopts an open overflow structure, the transducer of the structure adopts radial vibration and internal liquid cavity vibration to realize broadband, and the transmission voltage response of the transducer is reduced due to the problem of internal and external phase reversal of the radial vibration.
Disclosure of Invention
The invention aims to overcome the problem that the transmission response is greatly reduced due to the internal and external phase reversal problem when the underwater transducer in the prior art works in deep water, thereby providing the deep water and broadband transducer which can obtain larger transmission voltage response.
In order to achieve the purpose, the invention provides a multi-piezoelectric ceramic stack excitation deep water broadband transducer, which comprises a piezoelectric ceramic stack 1, a lower cylindrical end cover 2, a prestressed screw rod 3 and an upper cylindrical end cover 4; wherein,
the piezoelectric ceramic stacks 1 are multiple, any piezoelectric ceramic stack 1 is installed between the lower cylindrical end cover 2 and the upper cylindrical end cover 4 through a prestressed screw 3, and the piezoelectric ceramic stacks 1 are connected in parallel; and a space is reserved between the uppermost end of the lower cylindrical end cover 2 and the lowermost end of the upper cylindrical end cover 4.
In the technical scheme, the device also comprises an elastic sound-transmitting cavity 5 and a compliant tube 6; the elastic sound-transmitting cavity 5 is positioned outside the mounted piezoelectric ceramic stack 1, the lower cylindrical end cover 2, the prestressed screw rod 3 and the upper cylindrical end cover 4, and the compliant pipe 6 is mounted in the elastic sound-transmitting cavity.
In the technical scheme, the outer sleeve of the piezoelectric ceramic stack 1 is provided with a waterproof water-tight layer; the watertight layer is made of polyurethane glue or vulcanized rubber, and electric insulating materials including castor oil are filled in the watertight layer.
Among the above-mentioned technical scheme, 5 inside electric insulation material including castor oil, silicone oil that are filled in the sound cavity is passed through to elasticity, 5 inside material in sound cavity is passed through to elasticity with 5 chamber of passing through to elasticity form watertight structure together.
In the above technical scheme, the middle positions of the lower cylindrical end cover 2 and the upper cylindrical end cover 4 are provided with round holes.
In the technical scheme, the number of the piezoelectric ceramic stacks 1 is between 4 and 12.
In the technical scheme, a prestressed screw 3 is arranged at the center of the piezoelectric ceramic stack 1.
In the technical scheme, a plurality of prestressed screws 3' are uniformly arranged on the periphery of one piezoelectric ceramic stack 1.
The invention has the advantages that:
the transducer is a round tube-like overflow transducer consisting of a plurality of piezoelectric ceramic stacks and an open hole end cover, realizes large broadband emission of the transducer by utilizing multi-mode vibration of the piezoelectric stacks and the upper and lower cover plates, and obtains high-power emission by utilizing a 33 working mode of the plurality of piezoelectric stacks and reducing the problem of large emission response reduction caused by the problem of reverse phase of radial vibration of a round tube structure.
Drawings
FIG. 1 is a schematic structural diagram of a multi-piezo ceramic stack excited deep water broadband transducer of the present invention in one embodiment;
FIG. 2 is a schematic structural diagram of a multi-piezo ceramic stack excited deep water broadband transducer of the present invention in another embodiment;
FIG. 3 is one way in which the multi-piezo ceramic stack excited deep water broadband transducer of the present invention may be pre-stressed;
FIG. 4 is a graph of the response of the multi-piezoelectric ceramic stack excited deep water broadband transducer transmitting voltage.
Reference symbols of the drawings
1 piezoelectric ceramic stack 2 lower cylindrical end cover
3 prestressed screw rod 3' prestressed screw rod
4 upper cylindrical end cover 5 elastic sound-transmitting cavity
6 compliant tube
Detailed Description
The invention will now be further described with reference to the accompanying drawings.
Referring to fig. 1, in one embodiment, the multi-piezo ceramic stack excited deep water broadband transducer of the present invention comprises: the piezoelectric ceramic. The piezoelectric ceramic stack comprises a plurality of piezoelectric ceramic stacks 1, wherein any piezoelectric ceramic stack 1 is arranged between a lower cylindrical end cover 2 and an upper cylindrical end cover 4 through a prestressed screw 3, and the piezoelectric ceramic stacks 1 are connected in parallel; and a space is reserved between the uppermost end of the lower cylindrical end cover 2 and the lowermost end of the upper cylindrical end cover 4.
The various components of the transducer are described further below.
The piezo-ceramic stack 1 can be realized using polarized PZT-4 or PZT-8 piezo-ceramic.
The outer sleeve of the piezoelectric ceramic stack 1 is provided with a waterproof water-tight layer. The watertight layer can be made of polyurethane glue or vulcanized rubber, and electrically insulating substances such as castor oil and the like can be filled in the watertight layer. The electric insulating material can play the roles of electric insulation, heat dissipation and pressure balance.
In the embodiment shown in fig. 1, the number of the piezoelectric ceramic stacks 1 is 6, and the piezoelectric ceramic stacks 1 are uniformly and symmetrically distributed on the same circumference. In other embodiments, the number of the piezoelectric ceramic stacks 1 is between 4 and 12, and the piezoelectric ceramic stacks 1 should be uniformly and symmetrically distributed on the same circumference.
The multiple piezoelectric ceramic stacks 1 are connected in parallel, namely the anode and the cathode of each piezoelectric ceramic stack are connected, and the cathode and the anode are connected.
In this embodiment, the lower cylindrical end cover 2 and the upper cylindrical end cover 4 are provided with circular holes at their middle positions, and in other alternative embodiments, they may not be provided with holes, but may have a certain influence on the sound field performance.
The lower cylindrical end cover 2 and the upper cylindrical end cover 4 can be realized by adopting antirust hard aluminum.
The prestressed screw rod 3 is respectively and rigidly connected with the lower cylindrical end cover 2 and the upper cylindrical end cover 4, and the prestressed screw rod 3 can be realized by stainless steel.
Referring to fig. 2, in another embodiment, the multi-piezo ceramic stack excited deep water broadband transducer of the present invention further comprises: an elastic sound-transmitting cavity 5 and a compliant tube 6; the elastic sound-transmitting cavity 5 is positioned outside the mounted piezoelectric ceramic stack 1, the lower cylindrical end cover 2, the prestressed screw 3 and the upper cylindrical end cover 4, and a compliant pipe 6 can be mounted in the elastic sound-transmitting cavity.
The elastic sound-transmitting cavity 5 can play a waterproof role. In this embodiment, the outer casing of the piezoelectric ceramic stack 1 may not be watertight, but the elastic sound-transmitting cavity 5 is filled with an electrical insulating material including castor oil and silicone oil, and the liquid inside the elastic sound-transmitting cavity 5 and the elastic sound-transmitting cavity 5 form a watertight structure together. Thus, the pressure of the water can be kept the same as that of the surrounding water, and short circuit can not occur under high pressure.
The compliant tube 6 is a closed cylindrical structure with air filled inside, is positioned in the liquid in the elastic sound transmission cavity 5, and can improve the transmitting response performance of the transducer by utilizing certain pressure resistance and compressibility of the compliant tube.
In the embodiment shown in fig. 1, the pre-stressing screws 3 are located inside the piezoelectric ceramic stack 1, i.e. the piezoelectric ceramic stack in this embodiment is pre-stressed by using a central screw, in other embodiments, as shown in fig. 3, the pre-stressing screws 3 'can be installed around the piezoelectric ceramic stack 1, and 4-6 pre-stressing screws 3' can be installed around each piezoelectric ceramic stack 1.
Fig. 4 is a response diagram of the transmitting voltage of the deep water broadband transducer excited by the multi-piezoelectric ceramic stack, which reflects the acoustic performance of the transducer of the present invention, and shows that the structure can obtain broadband and high-power acoustic performance under the condition of meeting deep water operation.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited. Although the present invention has been described in detail with reference to the embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (8)
1. A multi-piezoelectric ceramic stack excitation deep water broadband transducer is characterized by comprising a piezoelectric ceramic stack (1), a lower cylindrical end cover (2), a prestressed screw (3) and an upper cylindrical end cover (4); wherein,
the piezoelectric ceramic stacks (1) are multiple, any piezoelectric ceramic stack (1) is installed between the lower cylindrical end cover (2) and the upper cylindrical end cover (4) through a prestressed screw (3), and the piezoelectric ceramic stacks (1) are connected in parallel; and a space is reserved between the uppermost end of the lower cylindrical end cover (2) and the lowermost end of the upper cylindrical end cover (4).
2. The multi-piezo ceramic stack excited deep water broadband transducer according to claim 1, further comprising an elastic sound-transmitting cavity (5) and a compliant tube (6); the elastic sound-transmitting cavity (5) is positioned outside the mounted piezoelectric ceramic stack (1), the lower cylindrical end cover (2), the prestressed screw (3) and the upper cylindrical end cover (4), and the compliant pipe (6) is mounted in the elastic sound-transmitting cavity.
3. The deep water broadband transducer for excitation of multi-piezo ceramic stack according to claim 1 is characterized in that the outer jacket of piezo ceramic stack (1) is provided with watertight layer for waterproofing; the watertight layer is made of polyurethane glue or vulcanized rubber, and electric insulating materials including castor oil are filled in the watertight layer.
4. The multi-piezo ceramic stack deep water broadband transducer according to claim 2, characterized in that the elastic sound transmission cavity (5) is filled with an electrically insulating substance comprising castor oil, silicone oil, the substance inside the elastic sound transmission cavity (5) and the elastic sound transmission cavity (5) together form a watertight structure.
5. The deep water broadband transducer excited by multiple piezoelectric ceramic stacks of claim 1 or 2, wherein round holes are formed in the middle positions of the lower cylindrical end cover (2) and the upper cylindrical end cover (4).
6. Multi piezo-ceramic stack excited deep water broadband transducer according to claim 1 or 2, characterized in that the number of piezo-ceramic stacks (1) is between 4-12.
7. The deep water broadband transducer of multi-piezo ceramic stack excitation of claim 1, characterized by a pre-stressed screw (3) installed in the center of one piezo ceramic stack (1).
8. The deep water broadband transducer for excitation of multi-piezo ceramic stack according to claim 1 is characterized by that a plurality of pre-stressed screws (3') are installed evenly around one piezo ceramic stack (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410033314.1A CN104811879B (en) | 2014-01-23 | 2014-01-23 | A kind of more piezoelectric ceramic stack excitation deepwater wideband energy converters |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410033314.1A CN104811879B (en) | 2014-01-23 | 2014-01-23 | A kind of more piezoelectric ceramic stack excitation deepwater wideband energy converters |
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| CN104811879A true CN104811879A (en) | 2015-07-29 |
| CN104811879B CN104811879B (en) | 2018-07-03 |
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| CN201410033314.1A Expired - Fee Related CN104811879B (en) | 2014-01-23 | 2014-01-23 | A kind of more piezoelectric ceramic stack excitation deepwater wideband energy converters |
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Cited By (6)
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| CN106481336A (en) * | 2016-10-31 | 2017-03-08 | 重庆博创声远科技有限公司 | Soic wave transmitting energy converter and its drill collar mounting structure |
| CN106644043A (en) * | 2016-12-14 | 2017-05-10 | 中国船舶重工集团公司第七0研究所 | Torpedo modular embedded type cylindrical conformal acoustic base array |
| WO2017176209A1 (en) * | 2016-04-07 | 2017-10-12 | Microfine Materials Technologies Pte Ltd | Displacement connectors of high bending stiffness and piezoelectric actuators made of such |
| EP3507794A4 (en) * | 2016-08-31 | 2019-08-21 | Beijing Supersonic Technology Co., Ltd. | Piezoelectric actuator and low frequency underwater projector |
| CN113333864A (en) * | 2021-06-08 | 2021-09-03 | 北京航空航天大学 | Multi-mode ultrasonic vibration auxiliary machining device and method |
| CN113634474A (en) * | 2021-08-24 | 2021-11-12 | 深圳市特力威科技有限公司 | Multi-dimensional ultrasonic vibration head and machine tool with same |
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| CN102097093A (en) * | 2010-11-26 | 2011-06-15 | 中国科学院声学研究所 | Deepwater wideband spherical transducer |
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2014
- 2014-01-23 CN CN201410033314.1A patent/CN104811879B/en not_active Expired - Fee Related
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017176209A1 (en) * | 2016-04-07 | 2017-10-12 | Microfine Materials Technologies Pte Ltd | Displacement connectors of high bending stiffness and piezoelectric actuators made of such |
| CN109075250A (en) * | 2016-04-07 | 2018-12-21 | 晶致材料科技私人有限公司 | The displacement connector of high bending stiffness and the piezoelectric actuator made of the displacement connector |
| CN109075250B (en) * | 2016-04-07 | 2023-04-04 | 晶致材料科技私人有限公司 | High bending rigidity displacement connector and piezoelectric actuator made of the same |
| EP3507794A4 (en) * | 2016-08-31 | 2019-08-21 | Beijing Supersonic Technology Co., Ltd. | Piezoelectric actuator and low frequency underwater projector |
| CN106481336A (en) * | 2016-10-31 | 2017-03-08 | 重庆博创声远科技有限公司 | Soic wave transmitting energy converter and its drill collar mounting structure |
| CN106481336B (en) * | 2016-10-31 | 2023-08-11 | 重庆博创声远科技有限公司 | Acoustic wave transmitting transducer and drill collar mounting structure thereof |
| CN106644043A (en) * | 2016-12-14 | 2017-05-10 | 中国船舶重工集团公司第七0研究所 | Torpedo modular embedded type cylindrical conformal acoustic base array |
| CN113333864A (en) * | 2021-06-08 | 2021-09-03 | 北京航空航天大学 | Multi-mode ultrasonic vibration auxiliary machining device and method |
| CN113634474A (en) * | 2021-08-24 | 2021-11-12 | 深圳市特力威科技有限公司 | Multi-dimensional ultrasonic vibration head and machine tool with same |
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| Publication number | Publication date |
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| CN104811879B (en) | 2018-07-03 |
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Granted publication date: 20180703 Termination date: 20190123 |