What is Framo vessel?
The Framo submerged cargo pump It has the ability to pump any type of liquid cargo, no matter how sensitive or viscous. The Framo cargo pump is a vertical single-stage centrifugal pump powered by a hydraulic motor for safe and efficient operation.
How does a Framo pump work?
The cargo pump has a built-in hydraulic motor connected to the impeller by a short independent shaft. Motor, shaft and bearings are lubricated and cooled by the hydraulic driving oil. The pump impeller rotates and acts as a non-return valve to prevent cargo from returning back to tank.
Who invented Framo pump?
Frank Mohn AS
The organization known today as Framo was founded as Frank Mohn AS in Bergen, Norway in 1938. In the early years, Framo operated mainly as an importer of marine equipment to Norway.
Why power packs are used in Framo system?
Power Packs. For the Hydraulic motor to rotate the impeller, there need to be high pressure of hydraulic oil. Power packs supply this high pressure hydraulic oil to the Framo hydraulic motor. Power packs are either installed in the forecastle store or in the engine room of the ship.
What is jockey pump in Framo system?
To regulate the oil temperature, a cooling water inlet valve is controlled from the framo control system. To prevent impurities from entering the hydraulic system, the system is also pressurized (2-6 bar) when not in operation. Depending on the installation, this is done by a jockey or feed pump.
How vacuum drain is done in Framo pump?
The vacuum drain line is equipped with a nozzle. The nozzle mixes the remaining liquid in the drain line with the internal tank atmosphere. This will reduce the weight of the liquid column. Consequently, the remaining liquid column can be emptied by means of a “vacuum” system on deck.
What is cargo oil pump turbine?
Cargo Oil Pump Turbine (COPT) System is found on the Oil Tankers. It has two systems working together to collectively discharge the oil. One system is the driving force which gets the power from steam to drive the second system, the centrifugal pump system.
What is the main difference between the way a positive displacement pump and a centrifugal pump work?
The obvious difference between the two is in the way they operate. As displayed above, centrifugal pumps impart velocity to the liquid, resulting in pressure at the outlet. Positive displacement pumps capture confined amounts of liquid and transfers it from the suction to the discharge port.
Why feed pump should run continuously?
One of the feed pumps must always be running when the power packs are not in operation. If the feed pump stops, the “protection pressure Low” alarms will be initiated.
Why vacuum drain is there in Framo pumps?
What is high capacity mode in a Framo hydraulic system?
When starting the first main power pack, two feed pumps will automatically start before the power pack is started. This is called high capacity mode of feed system. This is to keep the feed pressure on the suction side of the main hydraulic pump.