Direct Diesel Driven FW w/Eureka BB2 Pump – Component Descriptions

Component Descriptions

Pump Construction

Case and cover
The pump is radial split with double volute casing and nozzles integrally casted flanges. Suction and discharge nozzles are furnished with 300 lbs Ansi B16.5 RF flanges as standard.

Hydraulic range
Capacity: Up to 10.000 m3/h
Total head up to 400 mlc
Design pressure: 40 bar
Temperature: -46°c – 250°c

Coupling and Mechanical seals
The pump is connected to the engine with a flexible cardan coupling and it is designed to use a single mechanical seal according to API 610.

Impeller and wear rings
The impeller is double suction and axially balanced. It is designed with a large eye area to ensure low NPSH requirements, and thus reduce the possibility of cavitations. The impeller wear rings are mounted on the impeller with a slight shrink fit and pinned in position. The case wear ring and cover wear ring are inserted in the case and cover with a slight interference fit and secured with a hollow head set screw.

Bearings
The pump is equipped with an oil-lubricated antifriction or tilting pad bearing to take thrust and radial forces at the drive end. At the non-drive end the shaft is equipped with a silicon carbide journal bearing, flushed and lubricated by the pumped medium. This eliminates the need to let the non drive shaft end penetrate the cover.

Diesel Engine

Diesel engines used in Eureka systems are designed to operate in an offshore/marine environment. The diesel engine is skid mounted, coupled with the driven unit. For each project diesel engines are selected to meet the specified power requirements of the driven unit, be it a generator or a direct driven pump.

Control Panel
Control panels for the diesel engine contain all components and functions necessary for self contained operation, monitoring and protection of the system. The main components typically included in the cabinet are batteries used to power the control panel in case of loss of power from the installation, battery chargers, generator protection equipment (if generator is part of the package), a touch panel in the door to operate and monitor the system locally, and a PLC. The make of PLC can be altered from the Eureka standard to adapt to the SAS system of the installation. Cabinets are IP55 as standard.

Diesel Tank
Diesel day tanks are specially designed for each project, and even bespoke for each single diesel engine if this is required by space limitations, room or container configurations etc.

Room Cooler
To remove excess heat from the container/room, room cooler can be supplied by Eureka. For the self contained systems room coolers must be included. Room coolers typically consist of a seawater cooled circuit, and electrically driven fans for air flow through the cooler. Hydraulically driven fans may be supplied as an option.

Exhaust Cooling
Where there is a requirement to maximum temperature of the exhaust gas, Eureka may supply exhaust coolers. The temperature of the exhaust gas from the diesel engine is normally 400-450degC, and the exhaust cooler typically decreases the temperature to below 200degC. The cooling circuit is normally closed loop water/glycol with an electrically driven circulation pump powered by the generator.

The exhaust cooler is Eureka’s own design and meet the offshore requirements with regards to welding, material, surface treatment and documentation. The exhaust cooler is equipped with separate connection points for differential pressure and temperature transmitters, and instruments may be ordered as an option.

Piping
All on-skid piping will follow Eureka piping specification