Chen Ming, head of the \"liaoning ship\" power system technology and assistant director of the 703 research institute of china ship heavy industry group company, published an article detailing the course of the \"liaoning ship\" power system recovery.
In march 2004, mr. chen said, as director of the boiler lab, he was sent to dalian with several technicians from 703 to inspect the ship, the future \"liaoning ship \". Chen Ming found that the main boiler of the military ship except the body, combustion system, control system, auxiliary accessories, valve instruments and so on are all missing.
After returning to the Institute, Chen Ming and the backbone of the technical experts, through research and demonstration, completed the feasibility report of the power system repair program in May. In June, the report was adopted after being reviewed by the Bureau of Science, Technology and Industry for National Defence. The Central Military Commission has also asked 703 to sign a military writ on the quality and quantity of the power system.
Chen Ming said in the article, this is the first contact with the pressurized boiler in China, no drawings, no calculation books, no data, can only use the existing conditions, play subjective initiative, from the physical object to start pushing back, do reverse design. The institute formed a key group, the director of the team leader, to tackle the project, everyone often in the hot summer night sleepless discussion.
To verify the new design of the combustion system and control system, and to provide a full set of operating and maintenance manuals, in the winter of 2004,703 began large-scale construction of test bases. In the summer of 2005,703 began installation and commissioning of the boiler test rig. In the design of the test rig, complete sets of equipment, installation, commissioning and a series of work, everyone worked overtime to complete the time node specified in the military writ.
Five years after the start of work, on May 1,2009 at 9 a.m., the test boiler to carry out ignition test, a success. In March of the year after the onshore test, the successful ignition of the ship's boiler also marked the official start of the mooring test.
With the hot state operation of the boiler, the faults on the boiler body brought by the ship are constantly emerging, including furnace wall brick cracking, uneven external insulation, corrosion of external ducts, corrosion of pipeline valves, etc. Before the ignition, Chen Ming and the technical staff have already forecasted this, the rectification process is relatively smooth.
Mooring test is not smooth, a steam turbine main intake valve in the steam blowing pipe is normal, low load is also normal, in the high load test, the boiler side pressure gauge suddenly and quickly rise, the gauge pressure near the critical value, the alarm rang. After studying, it is the failure of the main inlet valve of the steam turbine, because the disc is placed too long and the disc is stuck under high temperature and high pressure. After a month of dismantling and repairing, a new disc was replaced and the problem was resolved.
During the mooring test, li zu-de, a 67-year-old senior engineer who died of sudden myocardial infarction at the scene in dalian, was also one of 15 designers who died for the carrier project.
Seven years after the start of work, in August 2011, China's first aircraft carrier carried out its first sailing test. After 5 days of navigation test, the main boiler, initiative system withstood the test,703 successfully completed the task.