Position of piston accumulator

hydraulic piston accumulator diagram

Accumulator diagram

Check below piston accumulator diagram

Adjust the position of piston accumulator one of an operating sequence of CT device system

piston accumulator diagram
Hydraulic circuit of a piston accumulator

Energize the PV fill proportional valve will fill the piston accumulator (PA). In this case the PV drain is not energized.

Energize the PV drain proportional valve will drain the piston accumulator. In this case the PV fill is not energized.

A constant tension system is a mechanical and hydraulic setup designed to maintain a constant level of strain to the hoisting wires.

Sequence of fill and drain of PA

By energizing the PV fill the PA will start to fill at a speed controlled proportionally. The pressure line is connect to the hydraulic oil side of  PA. Filling is possible with the maximum flow in this case of 160 l/min, the accumulator will be fill in 110 seconds. The maximum pressure is 210 bar at relief valve (RV1).

By energizing the PV drain the PA is drain, the hydraulic oil side of the PA is connect to return line. The speed of draining is proportionally control.

If the hydraulic pressure in the PA is increase above 210 bar, the pressure relief valve (RV1) opens to the tank. When drops below the pressure setting, the RV1 will close. In the system is add another safety measure when the pressure in pressure line above 375 bar the RV2 opens and the oil flows to the tank. The pressure in the pressure line can become higher due to the thermal expansions in the hydraulic lines within system.

The flow control valve (FC) is install for service purposes. Opening of the valve will release the hydraulic pressure of the PA. During normal operation the FC is closed.

The post is filled under Hydraulic Diagram

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