The vessels operating in the ocean need a large number of seawater to cool down the power system during operation, but the marine organisms such as oysters, barnacle etc. will attach onto the sea chest and the sea water inlet pipeline, their fertility is very powerful and they can expand to a big space in a very short time, which will block off the see chest and make the seawater inlet pipe inner diameter smaller, in this way, it will cause to rise the temperature of engines, seriously impact on the power output from main engine and generators, and make the vessel maintenance cycle greatly shortened.
QLFH-02 Description (Ultrasonic Wave)
OLFH-02 series Marine growth protection devices are designed to drive away Marine organisms, especially those with strong absorbability (like oysters, barnacles, etc.) as they are sensitive to ultrasonic waves. This is a new generation of ultrasonic Marine growth protection device, it is developed according to the characteristics of domestic Marine organisms based on the Russian technology and more the ten years of dedicated research by many domestic experts. The biggest difference is the use of ultrasonic shock to kill Marine organisms attached to the cooling system and make them separate from the surface of pipe.QLFH-02 series device fulfill with all of current shipping registration laws and regulations and other applicable international laws and prevent pollution laws. There is no any contaminant, such as chemicals, additives and toxic substances and it works through high frequency vibration transmission, no any effect to human, no any injure to the pipes and other parts, what's more important is that there is no pollution to the ocean environment.The device is very easy for installation, it can be welded on the ultrasonic generator on the surface of the pipe wall or platform pillar where can be easily attached by the Marine organisms, and then connect the generator with the power control device by cable. The installation can be done during the voyage.The Ultrasonic wave is emitted from the sensor installed on the surface of the pipe, as long as the ultrasonic generator will be running continuously in 24 hours, maintenance free, it can prevent the marine growths for long time. The principle is: the continuous ultrasonic vibration makes the marine growths can't stick on the wall or surface, use the high intensity acoustic filed of ultrasonic to process the marine growths and fluid, make their physical and chemical properties changed and then dispersed, crush, loose, even to death.
Technological Innovation
1.Weld the transducer on the surface of the equipment which need to be protected against Marine organisms, by this way, it simplifies the installation and commissioning, greatly improves the energy efficiency. Meanwhile, it can be installed when the equipment on board is running.
2.Power and transducer power selection and allocation are reasonable ,ultrasonic power density is appropriate, electrical parameters are matched reasonably, and the dynamic adjustment range is wide, which ensures the marine growth protection function and no damage or adverse effects to equipment and people.
3.Transducer adopts new functional material which has following outstanding technical features:3.1 high electromechanical conversion efficiency,20% improved than the average of magnetostrictive materials.3.2 general magnetostrictive materials have large eddy current and high temperature rise, which need cooling measures. The temperature rise of this material during operation is less than 60ºC, and its performance is stable, so it is unnecessary to consider cooling measures.3.3With unique magnetostrictive effect: large amplitude, which is several times higher than normal magnetostrictive materials. The power density is several times higher than the cavitation critical point.
4.The machine has high industrial reliability, long lifespan and high temperature resistance. Continuously operating life more than 10 years.
5.With a wide range of applications, easy conversion of power density and equipment selection, and no limitation to be used for all type of equipment .
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