PISTON PUMP WITH VERTICAL SPRING COMPENSATOR OF PRESSURE FLUCTUATIONS Russian patent published in 2021 - IPC F04B15/02 F04B11/00 

FIELD: oil industry.

SUBSTANCE: invention relates to oilfield equipment and devices for damping pressure pulsations in pipeline systems, it can be applied to drilling piston pumps. The piston pump contains a case, a drive part placed in it and a hydraulic part consisting of a block of hydraulic boxes and a vertical spring compensator installed on the discharge line by means of a flange connection. The compensator consists of a case, inside of which there is a piston, the inner surface of which is made in the form of two hemispheres. On the piston, holes are made that make up an angle with the direction of the liquid flow and have the intersection of the axes at a right angle. The holes are used to form counter flows for their subsequent swirling and collision to ensure partial damping of the pulsation before the compression springs come into operation. The working section connected to the case by studs includes compression springs installed in the grooves of the compensator structure elements, the parameters of which are selected in such a way that the pressure pulsation is damped in wide ranges, and the load on the turns of each individual spring occurs sequentially and evenly.

EFFECT: high degree of equalization of the uneven flow of the piston pump is provided in wide ranges due to the selection of parameters for the sequential connection of the springs; invention has a high durability of working elements, which increases the economic efficiency when repairing the device.

1 cl, 2 dwg