Qingdao, the world's largest deep-sea giant, made

The world's largest deep-sea giant made in Qingdao sailed across the sea to Brazil

the world's largest deep-sea giant made in Qingdao sailed across the sea to Brazil

China's construction machinery information

Guide: yesterday (15th), the underwater floating body built by Wuchang Shipbuilding Heavy Industry Co., Ltd. was completed and delivered in Qingdao's Haixi Bay. After passing the supervision of Huangdao customs, it was loaded and shipped to Brazil. It is reported that this product is specially customized for Petrobras and is mainly used for deep-sea oil exploitation. It is the most

yesterday (15th), the underwater floating body built by Wuchang Shipbuilding Industry Co., Ltd. was completed and delivered in Haixi Bay, Qingdao. After passing the supervision of Huangdao customs, it was loaded and shipped to Brazil. It is reported that this product is specially customized for Petrobras and is mainly used for deep-sea oil exploitation. It is the largest underwater riser support floating body system built in the world so far. Its successful delivery marks China's entry into the list of the world's most high-end deep-sea offshore equipment manufacturers

arrived in Brazil after sailing for more than 40 days

at 10 a.m. yesterday, I saw at the dock of Wuchang Shipbuilding Industry Co., Ltd. located in Haixi Bay of the development zone that under the combined pull of four easily worn tugboats, the huge underwater floating system slowly left the dock and headed for the anchorage outside Qingdao port. After more than 40 days of navigation, the underwater floating system will arrive in Brazil. The deep-sea riser support floating body system delivered this time includes 4 sets of floating bodies and 16 sets of anchor seats. The length, width and height of the product body are 52 meters, 40 meters and 10 meters respectively, with a total weight of more than 2700 tons. The system will increase its oil field output from 257000 barrels per day to 457000 barrels per day, and the total output will increase by 40% after it is serviced by a deep-sea oil field located in the Santos basin 300 kilometers off the coast of Brazil

wear "aluminum underwear" in enclosed spaces

"The biggest challenge to the normal operation of the oil transmission riser of the submarine oil field is to overcome the fatigue problem of the riser. At present, the maximum depth of deep-sea oil production in the world has reached 2500 meters underwater, and the longer the underwater oil pipe is, the gravity and current of itself will make the pipeline fluctuate greatly and reduce the service life. If an underwater floating body is added in the middle, the average deviation of the friction coefficient is very high, which can greatly reduce the fluctuation and improve the production efficiency." Wuchang shipbuilding exhibition will focus on the introduction of a group of basic, strategic and cutting-edge Advanced Materials Engineering Co., Ltd

according to the requirements of Petrobras, the difficulty and cost of installation and maintenance of underwater floating bodies are very large, so it is required to work continuously for 27 years in a maintenance free state. As it will work 250 meters underwater, corrosion prevention has become a major problem

the person in charge said that the underwater floating body wore two layers of "protective clothing" inside and outside the body. The outside of the floating body shall be painted, and the inside of the floating body shall be thermally sprayed with aluminum technology. After melting the 0.5mm thick aluminum wire with high temperature, it shall be sprayed on the steel plate inside the floating body to form a protective film

"there is a large enclosed space of 2700 square meters inside the underwater floating body. It is the first time in China to adopt thermal spraying aluminum technology for corrosion prevention. Workers need to wear special protective clothing to avoid inhaling dust. Thermal spraying aluminum should be carried out at a temperature of 20 ℃. When the dust reaches a certain concentration, it will explode in water, which requires that the working area should be well ventilated and maintain the stability of temperature and humidity." The person in charge said that for this reason, the company has specially trained about 200 thermal spraying aluminum sprayers, all of whom are rare operators for special types of work in offshore equipment manufacturing

all are operated by underwater robots

the person in charge said that after the underwater floating body is placed on the seabed, all are operated by underwater robots, which requires a high degree of standardization of the installation accuracy of various equipment. The installation accuracy of underwater floating body is 10 times that of shipbuilding. The maximum installation error of structural parts of ordinary ships is 1 cm, while the maximum installation error of underwater floating body structural parts is less than 1 mm