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 Wysłany: Sob 19:00, 18 Gru 2010 Temat postu: ugg boots günstig Large power plant boiler for Fa |
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Large power plant boiler for Fans of the reliability growth model and forecast
Increasing trend. (Continued on page 14) 14 30 2002 Fluid Machinery Volume 8, air intake flow rate is optional criteria: Vin. ~ (M / s) where 9 - Compressor nominal volume flow, m3/sD-- suction control valve size, nlln should be controlled at 10 ~ 20m / s range to 12 ~ 16m / s is the best. Suction control valve is too small, insufficient and inspiratory noise will increase displacement; suction control valve is too large, the volume will increase machine {La, which is used in some places not allowed. The design of oil separators 42, the overall type oil separators are primarily designed simplified design. The size of Simplified displacement general determined by the compressor. According to the displacement compressor to select the filter, then the size of the filter to determine the size of pension reduction. Experience that is about the size of simplified filter about 3 times the volume. Protection should be to set up a filter frame, the protective effect of the filter, the other also played the role of coarse points. Imports of oil and gas separator gas flow rate should be controlled at 15m / s or so. Separated oil separator is mainly used for structural requirements for compact, easy to maintain filter elements required, the unit easy to layout the various parts of the case. Crude oil is basically no maintenance, and oil points to be regularly replaced. At present the main points is the choice of essential oil products, crude oil must be designed to ensure that their separation if their separation is not good, is bound to increase the oil sub-load, affecting the life of oil points, requiring the separation efficiency of crude oil required to achieve 99. 9% or more. Test prototype uses a split-type oil separator. Sub-purchased oil: Crude oil designed, using the impact, spin combination of points and separate throttle structure. After testing, rough segmentation of the 99.993% efficiency. Designed as crude oil, oil divided the right choices, test prototype of the oil works well, the prototype of the oil consumption is far below the design requirements. 4.3 points back to the oil plant essential oils, whether the design of monolithic or split oil separator should be introduced from the bottom of a return pipe filter will filter down the oil filter the host of the suction chamber into the screw. Return pipe diameter can not be too large, too large it will affect the compressor displacement (due to compressed gas into the suction chamber after the expansion, reducing the inspiratory volume), will increase power consumption,[link widoczny dla zalogowanych], so in return lines need to Add a small hole limit, reduce the return pipe flow area. Holes can not be too small, too small will not smooth accumulation of oil export of oil sub-effect. Orifice diameter should be between 0.5 ~ 2mrn appropriate, large displacement of the compressor is greater, whereas the value of taking a small, prototype for the Qo. 8mm. 5 Conclusion screw compressor unit performance depends not only on the host (or head) of the design, manufacture and assembly, auxiliary equipment design and matching is correct or not is critical. (1) suction control valve selection generally inlet flow rate as a criterion, should be controlled at 10 ~ 20m / s range. (2) oil separator according to applications or user requirements can be designed as a whole or split-type structure, and its imports of gas flow rate should be controlled at 15m / s or so. (3) in the unit system assembly process, the installation should be based on the actual situation or change the pipeline structure (such as return lines in the current limit plus one small larvae L), to improve unit performance. Author: Zhangzhi Heng male Senior Engineer. Address: 888 West Changjiang Road, Hefei, Anhui 230031, Hefei General Machinery Research Institute No.. (Continued from page 22) (3) Power Boiler,[link widoczny dla zalogowanych], Fan of the reliability of the power management to facilitate growth forecast to arrange appropriate maintenance plan and select the appropriate maintenance, it can be provided for the implementation of condition based maintenance decision-making basis, to obtain the largest economic effects. (4) sent to different boiler, Fan of the Reliability Growth Analysis Comparison of results will help maintenance personnel for further analysis will help to improve its manufacturing sector to promote Power Station Boiler,[link widoczny dla zalogowanych], Fan technology in the management perfect. References 1 Si source. Quality and Evaluation Methods of Reliability Growth [M]. Beijing: Beihang University Press, 1997. [2] evaluated the reliability of power generation equipment regulations (temporary) [s]. Power Reliability Management Center,[link widoczny dla zalogowanych], 1997. [3] Shi Jinyuan and so on. Large: scale turbine reliability growth model and field validation [J]. Proceedings of the CSEE. 2000,20 (2). [4] and in 2000 t capacity of 200MW thermal power unit for Auxiliary Equipment Reliability R]. Power Reliability Management Center, 2000, (6). About the author: CAO first regular, male, b. 1974, PhD students, engaged in power generation equipment condition monitoring technology and the nature of the 【f】 heart Maintenance Strategy Technology Address: 200240, Shanghai Jiao Ying admission Energy System (Shanghai Dong Chuan Road,[link widoczny dla zalogowanych], 80O No.) .
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