公开(公告)号：WO1982002682A1

公开(公告)日：1982-08-19

申请号：PCT/SU1981000013

申请日：1981-02-02

Applicant: FOMIN VIKTOR IVANOVICH ,  GUZENKO STANISLAV IVANOVICH ,  EGAI MIKHAIL NIKOLAEVICH ,  MANENKOV YURY ALEKSEEVICH

IPC: B06B01/00

CPC classification number: B06B1/0215 ,  B06B2201/58

Abstract: A method of generating acoustic oscillations based on the shock excitation of a magnetostrictive converter with a pulse electric signal. The electric signal is generated in the form of unidirectional half-cycles of cosinusoidal voltage having the length of one to two half-cycles of acoustic oscillations of the loaded converter. The frequency of the electric pulses is chosen equal or multiple to the frequency of the acoustic oscillations. A source of acoustic oscillations comprises a power supply unit (7), a pulse frequency unit (10) and an energy storage capacitor (6) to the plates of which the exciting winding (2) of a magnetostrictive converter (1) is connected through the power circuit of a commutating element (5). The source comprises as well an additional exciting winding (3) placed also on the magnetostrictive converter (1) and concordantly to the winding (2), an additional commutating element (8) and a unit (9) for control of the commutating elements. The additional winding (3) is connected to the plates of the capacitor (6) through the power circuit of the commutating element (8) and through the power supply unit (7), whereas the output of the pulse frequency unit (10) is connected to the input of the unit (9) for control of the commutating elements, the outputs of that unit being connected correspondingly to the control circuits of the commutating elements (5 and 8). The source of acoustic oscillations is intended preferably for ultrasound cleaning of heat exchangers from sediments.

Abstract translation: 基于具有脉冲电信号的磁致伸缩转换器的冲击激励产生声振荡的方法。 电信号是以负载转换器的声振荡的一到两个半周期长度的顺时针电压的单向半周期的形式产生的。 选择电脉冲的频率与声振荡的频率相等或相等。 声振荡源包括一个电磁源单元（7），一个脉冲频率单元（10）和一个储能电容器（6），其中磁致伸缩转换器（1）的励磁绕组（2）通过 换向元件（5）的电源电路。 该源还包括还放置在磁致伸缩转换器（1）上并且一致地连接到绕组（2）的额外的励磁绕组（3），用于控制换向元件的附加换向元件（8）和单元（9）。 附加绕组（3）通过整流元件（8）的电源电路和电源单元（7）连接到电容器（6）的板，而脉冲频率单元（10）的输出为 连接到用于控制换向元件的单元（9）的输入，该单元的输出对应于换向元件（5和8）的控制电路连接。 声波振荡的来源最好用于从沉积物超声波清洗热交换器。