In this direction, pressure vessels and pipelines, vacuum simulation test equipment and low-temperature storage and transportation equipment covered by process equipment are taken as the research objects, and the technical performance, strength, safety and reliability and risk analysis are carried out by using modern design methods to ensure the technological advancement and safe and reliable operation of products. Theoretical research spans the disciplines of material mechanics, damage mechanics, thermodynamics, heat transfer, fluid mechanics, fuzzy mathematics, finite element, artificial neural network, genetic algorithm, corrosion and protection. Product development involves vacuum equipment, low-temperature storage and transportation equipment and pressure vessels, and the application scope covers military industry, aerospace, petroleum, chemical industry and other fields. In recent years, our department has successively undertaken such projects as "Research on Fuzzy Evaluation Method of Engineering Structural Integrity", "Research on Residual Strength Evaluation Technology of In-service Pipeline", "Detection System of Positive Pressure Leakage Rate of Low Temperature Storage Tank", "Space Cold Screen Test Device" and "Development of LNG Tank Container", which has made great progress in theoretical research and product development, and effectively promoted the development of this discipline.
In the past three years, we have completed scientific research and product development projects 17, with a total funding of more than 2 million yuan, and published more than 60 papers, including 4 articles included in SCI and EI. The achievement of this series of achievements indicates that this direction has formed its own research characteristics in China.
Theoretical research, design and manufacturing technology of scroll compressor
Scroll compressor is called the fifth generation positive displacement compressor, which is widely used in air conditioning, refrigeration, power engineering and other fields. Now it has expanded from compressor and expander to vacuum pump and oil pump, and its application field is also expanding.
The "Research on the Theory and Application of Scroll Compressor" carried out by our institute has undertaken research and development projects of national and local governments and enterprises for many times, with accumulated research funds of more than 4 million yuan and more than 60 papers published.
1The third-generation prototype QW90-3 and 75III scroll air-conditioning compressors completed in June 1996 were appraised by experts as "reaching the international advanced level" and obtained the national new product certificate. The research results won the first prize of Gansu Science and Technology Progress Award 1999 in March and the third prize of National Science and Technology Progress Award 1999 in February. Obtained three invention patents: anti-rotation mechanism of scroll compressor, anti-rotation mechanism of variable scroll fluid, and scroll compressor with back pressure cavity sealing device. Apply for invention patent: embedded hub scroll compressor.