711 provides power system integration for a group of high-end scientific research vessels

    According to the news of CSIC, 7111 has recently won the power of a number of scientific research vessels (ship-type shipyards), such as “Dongfanghong No.3” and “Xiangyanghong No.5”, and newly established polar scientific investigation of icebreakers (ship-type shipyards). The system integration reflects the strong strength of the high-end scientific research ship power system.

             The “Dongfanghong No.3” scientific research vessel of Ocean University of China is a new 5,000-ton deep-sea comprehensive scientific research internship ship (ship-type shipyard trading) and one of the largest marine research vessels in the world. It will be equipped with advanced water bodies, seabed and atmosphere. The detection system is expected to be officially put into use in 2018. The 7.1 will provide full ship vibration and noise assessment, power equipment and cabin vibration and noise reduction, low noise propellers (purchasing supply) and shafting.

             “Xiangyanghong No.5” adopts advanced pod-type all-electric propulsion system (purchasing and supply of product warehouse), which can meet the needs of comprehensive marine scientific investigations in atmospheric science, marine hydrology and environmental protection. Upon completion, it will become the national ocean. Offshore platform and mobile laboratory for basic research in marine science and high-tech exploration and development. Seventy-one will provide a complete set of power system equipment such as diesel engine (purchasing and supply) generators (purchasing and supply), propulsion transformers (purchasing and supply), and remote control systems.

             After the completion of the new polar scientific investigation icebreaker, it will be the first true polar icebreaker in China, equipped with advanced marine scientific research equipment such as cable-controlled deep submersible, unmanned remote submersible and underwater detection system, and The Dragon Ship formed a fleet of polar scientific research with complementary advantages and a clear positioning. The seventy-one will provide a power station system for it.

    PVC pipe and pipe fitting

    PVC pipe is extruded by hot pressing method after the cooperation of PVC resin, stabilizer and lubricant. It is the earliest plastic pipe developed and applied.

    PVC-U pipe has strong corrosion resistance, easy adhesion, low price and hard texture. However, due to the leakage of PVC-U monomer and additives, it is only suitable for water supply system with transmission temperature not exceeding 45 ℃. Plastic pipes are used for drainage, wastewater, chemicals, heating and cooling fluids, food, ultra pure liquids, mud, gas, compressed air and vacuum system applications.

    PVC pipe fittings include direct connection, tee and cross joint, and the tee is divided into 45 degrees and 90 degrees.

    Advantages of PVC pipe

    1. It has good tensile and compressive strength, but its flexibility is not as good as other plastic pipes.

    2. Small fluid resistance: the pipe wall of PVC-U pipe is very smooth and has little resistance to fluid. Its roughness coefficient is only 0.009. Its water transmission capacity can be 20% higher than that of cast iron pipe with the same pipe diameter and 40% higher than that of concrete pipe.

    3. Excellent corrosion resistance and drug resistance: PVC-U pipe has excellent acid, alkali and corrosion resistance, is not affected by moisture and soil pH, and does not need any anti-corrosion treatment during pipe laying.

    4. Good water tightness: the installation of PVC-U pipe has good water tightness whether it is connected by bonding or rubber ring.

    5. Anti bite: PVC-U pipe is not a nutrient source, so it will not be eroded by rodents. According to the experiment conducted by the National Health Foundation in Michigan, mice will not bite PVC-U pipes.

    6. Performance test: curing time shrinkage splitting strength tensile property peel strength thermal stability application period storage period release of harmful substances.

    PVC chemical pipe, PVC pipe fittings, PVC tube fitting, PVC hose, PVC pipe, PVC hose fitting

    Glove Industry Co.,Ltd. , https://www.gloveind.com

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