Recently, the national key research and development plan "deep-sea key technology and equipment" led by Nantong Liwei Machinery Co., Ltd. has made significant research progress in the key special project "development of all-sea deep geological winch system". Its successful development of the whole sea deep geological winch system, performance and technical indicators fully reached and partially exceeded the level of similar foreign mainstream products, not only the first domestic 13,000 meters of jointless synthetic fiber cable, the key core components to achieve 100% localization, but also became the first set of China Classification Society (CCS) and American Classification Society (ABS) double certification of the whole sea deep geological winch system, and successfully passed the workshop land joint commissioning test.
Where the heart desires, the past. All along, marine scientific expeditions from light blue to deep blue, from the near shore to the ocean, China's desire to carry out "full sea depth" exploration has always been stubborn. The deep-sea geological winch system is mainly used for geological sampling on ocean expedition ships, seabed biological trawling sampling and lifting instruments, and is an indispensable equipment in the process of exploration and development of deep-sea resources. However, almost all of the geological winch systems used in domestic deep-sea scientific research vessels are imported from developed countries such as Norway, so it is urgent to carry out the localization and independent research and development of the all-sea deep-sea geological winch system to provide scientific and technological support for the development and utilization of China's deep-sea resources, transportation power and marine power construction.
Sail the sea The dream of "Made in China" set sail
"The domestic production rate of the whole machine system ≥ 95%, the localization rate of key core components has reached 100%, and the set of all-sea deep geological winch system we have led and developed has overcome the core technology mastered by only a few countries and fully realized its own control." Ge Yangyuan, chief engineer of Liwei Machinery, said, "The maximum working water depth of this winch system will reach 11,000 meters, which can carry out geological sampling operations at the largest sea depth in all sea areas around the world!" ”
Ge Yangyuan, chief engineer of Nantong Liwei Machinery Co., Ltd
In August 2018, recommended by the Ministry of Transport, the "Development of All-Sea Deep Geological Winch System" project led by Nantong Liwei Machinery was approved by the Ministry of Science and Technology as a key special project of the National Key Research and Development Program. The project has a total of 6 topics, Dalian Maritime University, Harbin Engineering University, China State Shipbuilding Corporation No. 708 Research Institute, China Shipbuilding Industry Group Co., Ltd. 710 Research Institute, Shanghai Rainbow Fish Marine Science and Technology Co., Ltd. jointly carried out key core technology research, with a total cost of 20.63 million yuan.
"After more than 3 months of preparation, after several rounds of rigorous expert review, defense and fierce competition, we are the first private enterprise to obtain the project." Mentioning the process of obtaining the project approval at that time, Lou Xingjian, general manager of Liwei Machinery, is still vividly remembered. When asked how to "win" in the top "masters" in China, Lou Xingjian modestly attributed most of the reasons to "opportunity" and "courage", but people familiar with the situation know that since 2015, three consecutive years for the Russian research ship successfully supported the geological winch system, in recent years to undertake the national torch plan and other major scientific and technological research and development projects, a number of scientific and technological achievements to fill the domestic gap, and obtained more than twenty national patents, Liwei obviously has enough to turn "accidental" into "inevitable".
General Manager of Nantong Liwei Machinery Co., Ltd. Lou Xingjian
Chopping waves, "full sea depth" to advance "unstoppable"
The geological winch system of the far-reaching sea scientific expedition operation has problems such as excessive self-weight of traditional steel cables, easy wear and fracture of cables, and unwinding and winding of super-large capacity cables. In view of these stubborn "crux", Liwei Machinery has repeatedly developed and tested, breaking through the structural design and optimization technology of the all-sea deep geological winch system, the tension reduction technology of high-performance large-load traction winch, the rapid compensation response technology of the cable relaxation compensator, the adaptive multi-redundancy precision control technology of the cable trainer, the intelligent control technology of high-precision system integration, etc., and successfully solved the bottleneck problems such as "material update, structural optimization, size customization, and life extension" of the system.
"The structure of the winch system is precise, the marine environment is extremely complex, and any small factor such as temperature, humidity, and airflow will have a huge impact on the de-easing speed, tensile force and depth of the exploration instrument." Repeated debugging, constant summarization, and even sometimes the need to overturn and start over, sea trials for several months, working for several days until four in the morning, are commonplace. For Ge Yangyuan, who has been engaged in the research of key mechanical technologies for 34 years, in order to successfully configure "without a single flaw", it is necessary to sit on the "cold bench", sink his heart, and invest more than ordinary energy and unreserved enthusiasm. "As you might not imagine, we once designed 8 test samples for the gears of an anchor sprocket for the ocean, which lasted for 3 years and tested more than 100 times."
The project takes Liwei Machinery as the leader, and the project team composed of undertaking and participating units has its own advantages in the research fields of ship and ocean engineering, mechanical engineering, etc., covering all aspects of the development of the whole sea deep geological winch system, and building a professional, efficient, intelligent and green marine scientific research equipment system in China's whole sea area, full water depth and all-weather. At present, the system has been installed in the Ministry of Natural Resources Beihai Bureau affiliated to the science survey ship, the next step will be to carry out the deep-sea scientific expedition winch system actual operating conditions application and 11,000 meters of full-sea deep-sea test verification, to help China's marine scientific expedition "to the ocean, to the deep sea, to the polar", towards the "full sea" scientific expedition to the new era of "full sea" scientific expedition.
Prototype of the all-sea deep geological winch system
Never-ending scientific and technological innovation "opens the era"
"Setting international standards for the industry means occupying the commanding heights of the international community and being a passport to participate in international and domestic competition." Referring to the formulation of the international standard of "Ship and Marine Technology - Anchor Sprocket for Marine Ships" of Nantong Liwei Machinery Co., Ltd. in April 2019, Lou Jianjian could not hide his pride.
Ten years to sharpen a sword, a test of the edge. From the formulation of industry standards such as "Mobile Marine Platform Anchor Positioning Device", to the formulation of national standards such as "General Technical Conditions for Bridge Erectors", to the formulation of international standards of "Ship and Marine Technology - Anchor Sprocket for Sea Vessels", and the group standards that are currently entering the technical review stage, Liwei Machinery, as a representative of Nantong private enterprises, has steadily and steadily pursued excellence, and has achieved countless times of self-innovation, zero breakthroughs and "industry first" in the past ten years.
"Liwei Machinery did not sit in the office to nibble on the books of the technicians, the whole factory is a laboratory, I can proudly say today, Liwei Machinery's best technical research and development personnel are the front-line workers who grew up, have been tested by on-site practice." In Lou Xingjian's view, no detour is in vain, every subversive technological innovation needs bold ideas, the courage to practice, those invested energy, stepped on the "thunder" will eventually become the source of "bursting", prompting enterprises to "go forward".
Liwei Machinery started with the traditional product winch in the early days, and the current market share of the winch in the country's high-end products reached more than 80%, especially the high-speed rail construction and the hoist accounted for 95%. However, the company is not satisfied with having only one "single champion", and has successively committed to the development of new products of large-tonnage high-tech lifting cranes and offshore oil operating platforms, large ship mooring positioning winch, pipe laying marine shipwinches, offshore platform deck cranes, coal mines and non-ferrous metal mines and other mining winchs and large mining hoists, and now has a large number of "star products" that are competitive in the subdivision industry and have the right to speak in the global industry.
Chairman of Nantong Liwei Machinery Co., Ltd. Mao Zhiyong (first from the left)
Mao Zhiyong, chairman of the company, said, "'Set up a big ambition, brave climb' is the spirit and pursuit of Liwei innovation! In recent years, thanks to the fertile soil of scientific and technological innovation in Rugao, and thanks to the government's maximum incentive and support for our private enterprises in terms of space, financing and talents, we can let go of our hands and feet and continue to run. "Transformation is the means, upgrading is the goal, Liwei Machinery with the courage to dare to do and self-innovation responsibility, always walk in the forefront of the industry, to achieve a great leap from "leading" to "leading", with a high degree of technical self-confidence to the future "full speed forward"!
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