The invention discloses a cylindrical annular structure of the piezoelectric ceramic transducer, including the former head of radiation, piezoelectric crystal stack, tail block, vulcanized rubber and prestressed bolt, the piezoelectric crystal stack consists of eight groups, evenly distributed along the circumferential direction, the piezoelectric crystal stack ends of bonding between the head and tail radiation quality block, and through to the appropriate size of the prestressed prestressed bolt, output cable by tail mass will lead the piezoelectric crystal stack is connected to the external excitation source. The transducer consists of left and right halves are assembled into a cylindrical structure, coaxially mounted on the drill collar, make full use of the space volume of the drill collar, the transducer can achieve acoustic emission of high power and high sensitivity receiver dual function in 500Hz ~ 30kHz frequency range, two half assembled the cylindrical ring structure design makes it very convenient disassembly, has the advantages of simple structure, convenient manufacture, stable and reliable, low frequency and small advantages, is very suitable for the technical field of acoustic logging.
【技术实现步骤摘要】
【技术保护点】
一种圆柱环形结构的压电陶瓷电声换能器，其特征在于包括辐射头（１）、压电晶堆（８）、尾质量块（６）、硫化橡胶（４）、预应力螺栓（９）及输出电缆（７）；所述的压电晶堆（８）粘接在辐射头（１）和尾质量块（６）之间，并通过预应力螺栓（９）施加合适的预应力，压电晶堆（８）外包覆硫化橡胶（４），输出电缆（７）通过尾质量块（６）将压电晶堆（８）的引线连接至外激励源。
【技术特征摘要】
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