Vibration and noise caused by marine power units such as diesel engines, propellers, gear boxes, power stations, air compressors, pumps, etc. are the main factors affecting ship comfort, ship electronic instrumentation reliability, crew working and living environment, and also ship water. One of the main sources of noise for radiated noise. All countries in the world are conducting research on ship vibration reduction and noise reduction technology. The American Bureau of Shipping and the Norwegian Classification Society have formulated relevant norms and standards. The Norwegian Classification Society has set the level of comfort for the ship in the specification, level 1 is the highest level of comfort and level 3 is the acceptable level of comfort. The 711 self-developed, domestically pioneered ship power plant vibration and noise "Bustar", its performance has reached the Norwegian Classification Society level 1 comfort requirements.
According to reports, the whole ship vibration reduction and noise reduction comprehensive system control engineering technology is mainly through the three key ways of controlling the vibration and noise source of the ship power plant, cutting off the vibration and noise transmission path, and dealing with the target field vibration and noise, applying modern simulation technology. And test technology, and closely integrated with the whole process of ship design, construction, and sea trials, carry out a series of work such as ship vibration and noise estimation, index allocation, control plan evaluation, implementation and testing, and finally achieve ship vibration and noise reduction. purpose. After repeated trials, tests and real ship applications, its technical indicators have reached the current international advanced level.
It is understood that since 1963, 711 has carried out research and product development of ship vibration and noise reduction technology. After the "Seventh Five-Year Plan", the institute carried out a number of research projects and equipment research and development, and achieved a large number of achievements. It has compiled 26 professional standards, won 13 national scientific and technological progress awards, and 54 provincial and ministerial-level scientific and technological progress awards. And obtained 28 national patents, including 12 invention patents. On this basis, the institute has also formed the largest professional team in the industry, professional system, comprehensive, formed a complete professional technology research and product development system; also has advanced vibration, noise, shaft vibration testing equipment, set up The “Vibration Noise Detection and Standards Laboratory†approved by the former Commission of Science, Technology and Industry for National Defense and the China National Laboratory Accreditation Committee. At present, the institute can provide suitable technology for different types of ships to meet their vibration and noise reduction requirements. With the continuous application of the comprehensive system control engineering technology of the whole ship vibration reduction and noise reduction, more and more ship owners have come to the 711, requiring the application of this advanced technology on their ships.
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