DEVICE FOR HYDRAULIC MACHINE TECHNICAL STATE DIAGNOSTICS Russian patent published in 2018 - IPC F04B51/00 F15B19/00 

FIELD: machine engineering.

SUBSTANCE: device comprises a pressure sensor 1 installed in a pressure line, a hydraulic machine shaft revolution sensor 3, a sensor of hydraulic machine disconnection registration 4, a control unit 5 which includes a delay element and an enabling signal shaper connected in series, an inhibition element 6, a differentiating unit 7, a comparator 8 and an indication unit 9. The registration sensor 4 of the hydraulic machine disconnection is connected to the control unit 5. Outputs of the pressure sensor 1, the revolution sensor 3 and the control unit 5 are connected to inhibition element 6, which output in its turn is connected to the indication unit 9 through the differentiating unit 7 and the comparator 8 connected in series. The device is provided with a flow sensor 2 mounted in the pressure line 1, which output is connected to the inhibition element 6 to ensuring possibility of evaluating the volumetric losses of the hydraulic machine.

EFFECT: increased informativity of hydraulic machine technical state control.

1 dwg