FIELD: engines and pumps.
SUBSTANCE: device to generate the pressure pulses incorporates a working liquid medium source and the working medium lower-pressure space, a working medium circuit, a valve body arranged in the chamber and moving therein, the first circuit tap and the second one to communicate with the valve body opposite parts, a chamber with an orifice on one side of the said valve body, the said orifice communicating with the first tap to allow the working medium come out of the chamber. The valve body, acted upon by the working fluid in taps, can move to its first position to stop the orifice to be opened to release the working medium. The device contains a valve element to allow or interrupt the communication between the chamber and the working medium source via the second tap arranged above the before said chamber stream wise of the working liquid medium.
EFFECT: generation of pressure pulses with high frequency and accuracy without losses of the working medium.
21 cl, 10 dwg
