Hydropower and thermal power generator and steam turbine in bearing

Large diameter, overloading ( Pressure is greater than 3. 0MPa) Sliding bearing is a development trend of hydropower and thermal power with bearing, China has the world's most powerful nuclear power steam turbine bearing of the unit, but it is imported. In large heavy-duty bearing design technology, although some progress has been made in our country, but the overall level, there is still a difference in the developed countries at the same time, bearing materials is also restricted the development of China's high-end heavy-duty bearing a bottleneck. 4. Nuclear power on the nuclear main pump bearings work in high temperature and high pressure, high radiation under extreme working environment, bearing as nuclear main pump rotor bearing part of the special working condition requirements mainly made it one of the key difficulties of system design, the simply introduction and purchase in our country, to foreign companies. In terms of nuclear main pump bearing, just chasing in our country, is a new subject, the nuclear main pump bearing design, material and process technology and bearing system test platform construction, etc. , the tribological performance and dynamic performance of a bearing investigate and bearing performance of the monitoring and prediction technology research is a long-term task. 5. Wind field of wind turbine adopts rolling bearing mostly, but in the yaw system, with large-scale wind turbines, the cabin weight and passed to the tower of torque increase, to scroll the yaw bearing roller design and manufacture of demand is higher and higher, lead to bearing manufacturing costs rise. Sliding yaw bearing arises at the historic moment, therefore, at present, some large international wind power equipment manufacturers have started using composite material, and slide to replace the scroll in the design, use of self-lubricating, achieve the cabin rotational flow, and ensure the robustness and abrasion resistance. 6. Ship industry domestic Marine high-power low-speed diesel engine spare parts localization matching rate is only 50% ~ 60%, and 95% in Japan, South Korea, on to the 90% or so far. As a core supporting sliding bearing of diesel engine research and development relative lag, the domestic research and development of the service life of the product often only 1/3 ~ 1/2 of similar products abroad, and some products are still rely on imports, restricts the improvement of ship diesel engine level; Gas turbine in aircraft engine, ship with the main power equipment, gas pipelines, and other fields has a broad application space, domestic gas turbine, currently used mostly for imported products, improve the level of gas turbine research and development and manufacturing, to promote the development of national economic construction and national defense industry has the positive significance, but also drive the other related manufacturing industry, such as metallurgical material, high temperature alloy, precision relies on to make the development of technology, such as at the same time, realizing the gas turbine domestic more conducive to maintain security of national energy strategy. Our country is currently large diameter, high speed development, 5000 ~ 1000 /分钟) Marine gas turbine caused by bearing design problems need to solve. With the increasingly strengthening of the ecological awareness and improvement of environmental protection, especially in our country the water craft ( Such as ships, submarines and torpedoes, will consume ray, surface warships. ) Of water lubricated bearing vibration, noise, reliability, bearing capacity, stiffness, precision and service life of the increasingly demanding performance requirements, such as low noise, high reliability, long life, large size, high pressure, super lubrication, high precision, high stiffness, low energy consumption, such as intelligent questions remain to be solved