STAND FOR RESEARCH OF COMPENSATOR WITH QUASI-ZERO STIFFNESS Russian patent published in 2019 - IPC G01M7/00 

FIELD: hydraulic engineering.

SUBSTANCE: invention relates to the field of hydraulic engineering, in particular to test equipment, and can be used to study the dynamics of the test object under the action of longitudinal vibration loads. Device contains a fixed frame, a source of vibration, a set of weights, an electric motor, an eccentric weight mounted, ensuring the occurrence of vibration of the test elements simulating the behavior of a compensator with quasi-zero stiffness as part of an ESP unit in an oil well. On a fixed frame there is a cylinder with a set of nozzles having a piston with a rod with a set of weights, on the upper end of which there is a source of vibration in the form of an electric motor with an eccentric weight mounted. AC resistor is installed on the cable line connecting the power source to the electric motor, a vibration sensor and an oscillation amplitude meter, made in the form of a metal plate mounted on a dielectric base, are mounted on the rod, with freely moving, along the axis of the above-mentioned metal plate with a constant contact, spring-loaded slider connected to the cylinder rod, connected with the computing unit. In the cylinder piston region, a package of series-connected disc springs is placed one above the other and separated by metal washers having openings for circulation of gas under pressure in the cylinder piston region, and the cylinder in the lower part is pneumatically connected to the pressure gauge and compressor through a valve.

EFFECT: technical result is to improve the accuracy of the measured parameters by creating conditions for testing compensators in modes similar to those used in ESP installations in oil wells, expanding the functionality of the stand, reducing test times.

1 cl, 3 dwg