Reservoir pressure maintenance systems with the application of piston or multistage centrifugal pumps.
Plunger high pressure unit for reservoir pressure maintenance.
| Pumped medium | : water (with the suction filter 100 µm) |
| Max. Medium temperature | : 45°Ñ |
| Installation | : zone 2 |
| Explosion subclass | : IIA |
| Temperature code class acc. to ATEX | : Ò3 |
High pressure pump
| Nominal flow rate | : 872 l/min (52,3 m3/h) |
| Max. operating pressure | : 220 bar |
| Plunger diameter | : 70 mm |
| Number of plungers | : 5 |
| Booster pressure, required | : 2-4 bar |
| Drive power, required | : 375 kW |
| Pump speed | : 372 rpm |
| Gear ratio | : 3,99 |
Material
| pump head | : stainless steel (1.4462) |
| stuffing box | : stainless steel |
| plunger | : ceramics |
Lubrication system
- forced feed lubrication system with AC-drive 1,75 kW with the integrated filter, oil pressure sensor and oil temperature sensor
- the integrated oil cooler (cooling medium: water, connection¾)
AC-drive as a 3-phase electric motor for use with the frequency converter
| Power | : 400 kW |
| Nominal speed | : 1500 rpm |
| Voltage | : 400 V |
| Design | : IP 55, B3, ATEX |
Booster pump station (integrated into the high pressure pump) consists of a centrifugal pump with the 3-phase electrical motor acc. to ATEX.
The pump is equipped with:
- pneumatic suction valve lifting system (appr. 5 bar, 30 Nl/min), air is from the mains as the control system for load/unload mode including the solenoid valve 24 V DC and the air service unit
- high-lift safety valve, set pressure 264 bar.
- high pressure gauge, 400 bar
- junction box for connection sensors and control elements
- flexible coupling with protection guard ATEX
Accessories for the pump suction line:
- counter welding neck flange (DN 150, PN10)
- piping in stainless steel (1.4462)
- hand stop valve with the position indicator, position closed (for maintenance)
- suction compensator (rubber type)
- suction pressure switch
High pressure line:
- two high pressure hoses between the pump unit and the common pressure line (DN50) with the counter flange (with damping)
- high pressure hand stop valve with the position indicator, position closed (for maintenance)
- high pressure check valve (to avoid leakage from the high pressure accumulator in case of hose collapse)
- high pressure counter welding neck flange DN 80, PN 315
Base-frame with the damping pads
Switch cabinet (not ATEX) for installation in a non-explosive environment includes:
- frequency converter (1:2)
- pump control and supervision system (integrated into the PLC panel) for automatic safety shutdown in case of:
- max. oil temperature
- min. oil pressure
- min. booster pressure
- max. water suction temperature
- min. compressed air pressure
The pump unit is internally wired up to the above mentioned switch cabinet through 20m electric and control cable.
Pump with wiring on the common base-frame:
- electrical drive 400 kW
- flexible coupling
- pump
- suction stop valve
- suction damper
The pump unit is built in the 15’ container (without acoustic insulation).
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