

ErichHahn HPDU is designed for continuous pumping of heavy oil at process temperatures not exceeding 200°C and pumped product viscosities of 20 to 1000 cSt.
ErichHahn HPDU Advantages
There are various ErichHahn HPDU models available. They have similar designs and compositions while differing from each other in terms of capacity, overall dimensions and components.

Heavy Oil Pumping and Distribution Unit | HPDU
The unit includes a 3 or 4 outlets distributer, a gear pump, a gear motor, a heavy oil filter, a control cabinet, oil heating system and thermal insulation. All the equipment is close mounted on a frame.
It distributes oil product flows among three or four outlets (depending on the unit’s design). The Automated process control system (APCS) controls the flow remotely using electrical actuator butterfly valves.
The internal gear rotary pump is designed for heavy oil pumping.The pump ensures a uniform supply of pumped oil without pulsations to reduce the vibration level of the pumping station, and product foaming. The pump has an integrated safety valve for overpressure protection.
The оperation panel of the control cabinet has controls and indicators of the unit’s operation. The control cabinet connects to the central control cabinet for communication with the frequency converter. The cabinet is an integral part of the automated process control system for supplying heavy oil at the enterprise. The оperation panel of the control cabinet may be used for controlling electrical actuator gate valves, starting the pump, and configuring its rotation speed with the potentiometer. The station has indicators of the pump’s key process parameters, electrical actuator gate valve statuses, grid power supply availability and standby mode.
The automation system for HPDU units uses remote I/O stations and occupies a heated and ventilated control cabinet (the cabinet can be equipped with a PLC processor module if necessary). A frequency controller is used for controlling the motor.
Remote control is implemented via a SCADA system or via other controllers, via the Profinet I/O protocol (Modbus TCP/RTU if required) as well as directly from the control cabinet in the local mode (control of electrical actuator gate valves, pump start-up and frequency settings using controls located on the control cabinet door). The control cabinet also displays the key process parameters (pump current and frequency).
The filter is designed for removing mechanical impurities from the pumped product. The process temperature does not exceed 200 °С. The filter consists of a filter shell, a removable cover, and a filter element.
The pump and filter are heated with thermal oil heating system. All of the units are covered with high density thermal wool insulation and removable protective shells.
HPDU Gear Motor
The manufacturer’s gear motor is designed for transmitting and converting the rotational motion to the gear pump via a flexible coupling.
The frequency converter in the power equipment cabinet is designed for starting the pumping unit and changing its performance.
Other Pumping Equipments
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