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A transducer, high-power technology, applied in piezoelectric/electrostrictive transducers, sensors, sensor types, etc., can solve the problems of narrow working bandwidth, high Q value, large size, etc., to widen the working bandwidth, The effect of improving the emission voltage response value
Active Publication Date: 2017-12-12
BEIJING GREAT WALL ELECTRONICS EQUIP CO LTD
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Problems solved by technology
The longitudinal vibration transducer is a safe and reliable transducer, but its operating bandwidth is relatively narrow, and its size is often large when it works at low frequencies
The Helmholtz transducer is a transducer combined with a cavity and a short tube. The fluid in the cavity vibrates and radiates out through the short tube to achieve low-frequency emission. Because of the overflow structure, it is a transducer that can be used in large Transducers that work in deep sea areas, but the neck of the short tube has a small radiation area, which will produce a higher Q value and a narrower working bandwidth
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Embodiment 1
[0025] A high-power deep-water broadband transducer, the transducer includes a horn head 1, a piezoelectric ceramic crystal stack 2, an intermediate mass 3, a screw 4, a piezoelectric ceramic ring transducer 5, a connector 6 and a cable 7, such as figure 1 shown.
[0026] Among them, the two horn heads 1 are the same, made of aluminum, with a size of Φ196mm, and 60 pieces of PZT-4 emitting piezoelectric ceramic wafers with a size of Φ60mm and a through hole in the middle are connected in parallel to form a piezoelectric ceramic crystal stack 2, as image 3 As shown; the cylindrical intermediate mass 3 is made of stainless steel, and its size is Φ60mm. The piezoelectric ceramic ring transducer 5 is a ring made of tangentially polarized ceramic strips, such as Figure 4 As shown in (b), the ceramic strip is PZT-4 emission type piezoelectric ceramic material with a size of Φ260mm.
[0027] There is a screw hole in the middle of the intermediate mass block 3, and the stainless s...
Embodiment 2
[0030] A high-power deep-water broadband transducer, in which the two horn heads 1 are the same, the material is aluminum, the size is Φ360mm, and 80 pieces of PZT-4 emitting piezoelectric ceramic discs with a size of Φ70mm and a through hole in the middle are connected in parallel to form a piezoelectric Ceramic crystal pile 2, such as image 3 As shown; the cylindrical intermediate mass 3 is made of stainless steel, with a size of Φ196mm, and the piezoelectric ceramic ring transducer 5 is a ring made of tangentially polarized ceramic strips and metal strips, as Figure 4 As shown in (b), the ceramic strip is made of PZT-4 emitting piezoelectric ceramic material, the metal strip is made of aluminum, and the size is Φ380mm.
[0031] The rest of the structure is the same as the transducer described in Embodiment 1.
[0032] Establish a finite element model in water, impose infinite absorption boundary conditions, and use finite element software to simulate the performance of t...
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Abstract
The invention relates to a high-power deep water broadband transducer, and belongs to the technical field of underwater acoustic transducers. In the transducer: a screw hole is formed in the middle of a middle mass block, a screw with threads on two ends penetrate through the screw hole, and horn heads and a piezoelectric ceramic crystal pile are connected with the middle mass block; the middle mass block is located at the middle of the screw, an even number of piezoelectric ceramic wafers are symmetrically distributed on the left and right sides, the two horn heads are symmetrically distributed on the left and right sides of the piezoelectric ceramic crystal pile and are located on the two ends of the screw, the tails of the horn heads are in threaded connection with the end parts of the screw, and the opening is outward; a cable is connected from the middle mass block; a piezoelectric ceramic circular ring transducer is respectively embedded at each horn head and is connected with the horn head, the piezoelectric ceramic crystal pile and the middle mass block through connecting pieces. The transducer expands the working bandwidth of the transducer while increasing the transmitting power, and realizes high-power deep water broadband transmission.
Description
technical field [0001] The invention relates to a high-power deep-water broadband transducer, in particular to a broadband high-power transducer that can be used in large-depth waters, and belongs to the technical field of underwater acoustic transducers. Background technique [0002] With the development of science and technology and the changes of human society, the strategic significance of the ocean is increasing day by day. And the resources on land are limited, and there are abundant resources in the ocean. In sea water, the propagation attenuation of sound waves is much smaller than that of electromagnetic waves. Therefore, the detection and development of the ocean is inseparable from the use of underwater acoustic equipment. The underwater acoustic transducer is a device that emits and receives sound waves and is the basic component of underwater acoustic equipment. The attenuation coefficient of low-frequency sound waves is relatively small, and the long-distanc...
Claims
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