Recently, the application of "Electronic Timing Swirl Spray Cylinder Oil Injection New Technology Application Research" developed by COSCO Group was successfully applied to the world's advanced large-scale diesel cylinder oil lubrication system to the actual ship, which changed the mechanical timing of the previous cylinder oil. The traditional lubrication method of oil injection and piston ring lubrication uses the combination of electronic timing oil injection and rotary scavenging air flow oil to solve the problem of cylinder lubrication of large diesel engines.
According to Chen Zhengjie, general manager of the Safety Technology Supervision Department of COSCO Group, cylinder oil consumption accounts for about 73% of the cost of cylinder equipment for marine diesel engines. Saving cylinder oil consumption is a better way to improve the economy of ships. However, it is difficult to achieve a significant reduction in cylinder oil consumption in conventional cylinder oil lubrication systems due to limitations of their own technology.
The electronic timing swirling spray cylinder lubrication system developed by COSCO Group makes the injection time of the cylinder oil just right. The cylinder oil is injected by the spray method, and the cylinder oil is evenly distributed on the upper part of the cylinder wall and the piston ring by the vortex action of the scavenging gas. Between, the ideal lubrication condition of the cylinder wall is ensured, the wear of the cylinder liner is reduced, and the cylinder oil consumption is significantly reduced. According to the actual ship data statistics, the large-scale diesel engine saves more than 35% of the cylinder oil, and the annual savings cost is 100,000 to 200,000 US dollars.
The actual ship test also shows that the use of diesel engine cylinder oil is more scientific and reasonable after adopting new technology. Various failures and unsafe factors caused by excessive injection of cylinder oil can be avoided, and the reliability of diesel engine operation is obviously improved. . It is reported that a test ship has not used a power-saving device for more than one year, which solves the problem that the ship's automatic deceleration affects the schedule due to the cylinder oil cut-off, and effectively improves the ship's quasi-class rate. At the same time, the daily maintenance workload is also reduced, reducing the maintenance cost and the crew's work intensity, and the resulting indirect benefits are considerable.
In addition, after adopting the new technology, the amount of oil in the oil tank of the cylinder scraped off is obviously reduced. According to the actual measurement, the oil consumption is reduced by about 20%, which reduces the workload and cost of oil treatment; and the reduction of the oil injection rate of the cylinder can significantly reduce the exhaust gas of the diesel engine. Dust particles, sulfur tetraoxide and metal oxide content. These are beneficial to marine environmental protection and ship performance requirements.
According to the level retrieval of relevant authorities, the electronic timing swirl spray cylinder lubrication system represents the advanced level of the cylinder oil injection technology of today's marine diesel engines. It is reported that the new technology has been applied to 26 ships of five companies including COSCO Group, which is owned by COSCO Group. If the promotion surface is calculated based on 50% of COSCO's on-board vessels, it can save more than 10,000 tons of cylinder oil per year, and the economic benefits exceed One hundred million yuan. Especially in the case of rising oil prices year by year, new technologies have become an effective way to save energy and improve the reliability of diesel engines. Chen Zhengjie revealed that the large-scale diesel engine used by ships above 10,000 tons is suitable for adopting this new energy-saving technology. The transformation cost will cost more than RMB 1 million, but the investment can be recovered in about two years.
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Lighting Accessories
Lamp accessories are various parts and accessories used to install, secure and connect lighting fixture. They play an important role, not only to ensure the normal operation of the lamp, but also to improve the use effect and aesthetics of the light.
There are many materials for making lamp accessories, generally speaking, there are metal, plastic, glass, ceramics, etc. Metal generally has a long service life, corrosion resistance, and should not be aged, such as iron product lamps, which have a long service life; Plastic lighting product have a short use time, a faster aging speed, and are easy to deform when heated; The service life of glass and ceramic lighting is long as well.
Nowadays, the lighting and lighting accessories industry uses metal materials as the most widely used base, generally used materials are zinc alloy, aluminum alloy, steel, stainless steel, etc. The use of technology is mainly electroplating, painting, oxidation and electrophoretic coating. With the current people to lighting accessories product performance requirements and environmental awareness improved, electrophoretic coating process has gradually become the preferred process for surface treatment of lighting accessories.
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