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Schotel SERO SHPmarine side channel pump
In order to make the standard SHP seaworthy, the SHPmarine was modifed according to the IMO-IGC regulations.
SERO SHPmarine side channel pump transports LPG
THE SERO PUMPSYSTEMS’ SHPMARINE SIDE CHANNEL PUMP IS INTEGRATED INTO THE SECONDARY FUEL SUPPLY SYSTEMS (SFSS) OF HYBRID SHIP PROPULSION UNITS PUMPING LPG (PROPANE) TO THE MAIN SHIPBOARD ENGINE. IT IS THE FIRST PUMP OF ITS KIND TO BE BOTH LLOYD’S REGISTER ACCEPTED AND DNV GL TYPE APPROVED FOR MARITIME DUAL FUEL PROPULSION SYSTEMS.
ALL PHOTOS COURTESY OF SERO PUMPSYSTEMS, UNLESS STATED OTHERWISE. The special technical features of this pump include a low sucton head requirement, uninterrupted pressure-constant delivery of lowviscosity liquids, and a resistance to shipboard vibratons ensuring high functonal reliability of the SHPmarine in ‘over the water’ applicatons. The SHPmarine pump technology was originally developed for use in the oil & gas industry, handling natural gas liquids in a myriad of midstream producton and process services. It has now been modifed to meet maritme needs as the IMO 2020 initatve to reduce fugitve emissions has been established.
A seaworthy side channel pump
Low NPSHr (Net Positve Sucton Head requirement), reliable and pressure-constant
delivery of volatle LPG, and resistance to vibratons from the ship’s hull – the side channel pump SHPmarine meets all of the technical challenges when pumping LPG from the storage tanks through the SFSS, feeding the main engine of an ocean-going vessel. In order to make the standard SHP seaworthy, the SHPmarine was modifed according to the IMO-IGC regulatons. The pressure-bearing components of the pump – such as the sucton casing, the discharge casing, the outer barrel, and the sealing chamber – are made of austenitc stainless steels or low-temperature steel to meet the pressure requirements.
Five-layer marine paint
The SHPmarine also meets the corrosive and temperature-related demands of shipboard applicatons in many ways. For example, spring-loaded stainless-steel screws and special low-temperature O-rings compensate for the thermal expansion behaviour of the materials during extreme temperature changes. A fve-layer marine paint (C5M) will protect the structural components from salt water and UV radiaton. Special dry-running mechanical seals are used to prevent leakage and control fugitve emissions. They also ensure cost-efcient operaton and service.
Lloyd’s Register approval
To meet the unique fow and head criteria, SERO PumpSystems has extended the SHPmarine’s performance range up to a 10-stage hydraulic confguraton. To assist in servicing the pump, SERO integrated an all-steel spacer coupling between the pump and the drive engine. By implementng these design features, the SHPmarine was accepted by Lloyd’s Register and received the type approval of DNV GL.
Successfully integrated
Depending upon the SFSS design, there can be low pressure pump requirements as well as high pressure pump requirements. The SHPmarine model has been successfully used for either applicaton. Several large gas carriers utlising the dual fuel systems have been recently commissioned and many more are on the way as the IMO 2020 initatve gains momentum. The SERO model SHPmarine has evolved into a sea faring side channel pump soluton.
The SHPmarine side channel pump is the frst pump to be both Lloyd’s Register accepted and DNV GL type approved.
Several large gas carriers utilising the dual fuel systems have been commissioned and more are on the way.
Photo courtesy of BW LPG.
