DEVICE FOR ADJUSTMENT OF THE MONITORING GAS FLOW Russian patent published in 2018 - IPC G01M3/02 G05D7/06 

FIELD: test equipment.

SUBSTANCE: invention relates to the testing technique, namely to the devices for monitoring the local tightness of the welded articles using test gases. Device for controlling the flow of the control gas comprises the body with the adjustable throttle, the locking organ of which is made in the form of a conical needle and a return-shaped seat mounted in the housing has three equally rigid diaphragms fixed at the same distance from each other with piezo-elements, which are installed between them in the form of tubes with the possibility of providing the stable centering suspension of the conical needle rod.

EFFECT: increased load capacity and accuracy of the conical needle movement of the device, reduced dynamic deviations from the impact of the gas flow.

1 cl, 1 dwg