| 摘要 |
A generator of pressure pulses comprises a body in the axial reboring of which shutoff element of slide-valve type is placed, with formation of pressure, working and discharge cavities, the facet of its valve section is pressed to the saddle arranged in the body, spring controller of pressure of generator opening resting at the tail element of the shutoff element separated from its slide section by reboring, and the edges of the slide part form positive overlap with the reboring of the body, this separated the intermediate cavity where the valve section of the shutoff element is placed from the working one, and negative overlap, this connects the working cavity to the discharge one through the reboring and the flat at the tail element of the shutoff element. The opening pressure controller is arranged as cup screwed to the body of the generator, in its through reboring two placed in coaxial positions springs are installed, the upper ends of those rest at the lower edges of two pistons - with the larger and the smaller diameters.
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