Mechanical analysis of key components and machine performance for the oil regeneration project compressor
Special scroll profiles among the functional general scroll profiles were chosen to make a study on the integrative performance of the scroll compressor. Based on such profiles, it was further researched for all factors working on the integrative performance of the scroll compressor and the analysis of gas power was made on the key components influencing the integrative performance and four basic parameters including height, spindle rotation, involute angle and radius parameter of base circle. It was analyzed that the relation of axial gas power, radial gas power tangential gas power, overturning torque and rotation torque of dynamic and static vortex plate by employing the Genetic Algorithms (GA) of MATLAB to obtain the restricted parameter range, and to conclude that there is a linear relationship among four basic parameters and the overall force. Instance calculation was conducted to prove the validity of the restricted range that compression ratio and volume utilization have been increased greatly after optimization, so as to avoid the blindness of parameter selection and consequently improve the integrative performance of the scroll compressor.
The Study and Outlook of Air-Conditioning Refrigeration Compressor Technology Development
This paper introduced the development process and status quo of compressor.Particularly recommended the recent domestic studies about the type of scroll compressor lines,refrigerant,lubrication,frequency-converse technology and so on.Pointed out the direction of scroll compressor development in the future by reviewing the history of scroll compressor.In recent years,with the development of compressor-related industry technology,refrigeration and air-conditioning compressor technology has been rapidly developed and energy efficiency of the whole refrigeration system has been greatly improved.However,due to the double pressure of short supply of energy and environmental protection in future,we have to constantly explore the new technologies of refrigeration and air conditioning industry to meet the requirements of energy development strategy that fits the situation of our country and to achieve the objective of building a harmonious society.
Long Ceramic Beam Tubes for Accelerator Magnets
The ceramic beam tubes for the fast and abort kickers and the bucker and pinger magnets used at Fermilab must meet a number of exacting requirements. The tubes must be long and sufficiently straight so as not to limit magnet design. They must have wall strength capable of withstanding the atmospheric and mechanical forces encountered during construction and operation. Vacuum tight ceramic to stainless steel transitions must be of reasonable cost; they must also withstand high temperature processing and remain vacuum tight to the 10/sup -9/ Torr range. To remove the possibility of static charge buildup each tube must have a surface coating of indium oxide applied to the inner wall. This thin coating is difficult to achieve and requires the most careful attention to detail. The methods used at Fermilab to achieve these goals are presented in this paper.