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Comparison of the pharmaceutical companies of the air compressor selection

Table 3 Comparison of parameters of the initial investment in various types of air compressor comparison Notes: (1) unit prices having left cold and dry, piston air compressor tank dismay; (2) As a single flow is not easy to calculate, cooling towers and pump price is discounted draw (3), quoted in U.S. dollars of imported equipment by $ 1 = Y8.30 translated into RMB. 3 Performance comparison of various types of air compressor air compressor 5, the annual running costs of various types of contrast we refer to the air compressor manufacturer's product introduction, the performance parameters of a list of various types of air compressor to do a certain amount of comparison. Various types of equipment are still models previously described, for example, the usual conditions of operation and maintenance of such quantitative performance parameters in Table 2. In contrast to its list of operating costs, as shown in Table 4. 4, the initial investment of various types of air compressor air compressor comparison to illustrate the various types of initial investment, we still list the model as an example to contrast, as shown in Table 3. 4O China Pharmaceutical Equipment Series 2006 6 5 long-term effects of various types of air compressor models described previously and then computing, for example, the running costs of its long-term use compared to illustrate the list, as shown in Table 5. Table 4, the annual operating costs of various types of air compressor comparison Notes: (1】 power annually to run 350d, 90% full load, the industrial price O.42 yuan / kWh calculated as: (2) consumption of cooling water at the amount of cooling water by 2%. industrial water 1.8O yuan / m calculation; (3) depreciation of equipment at unit prices calculated by dividing the service life of 15 years; (4) the maintenance fee is based on daily consumption statistics and empirical data obtained . Table 5 Comparison of various types of air compressor 7, the long-term operating costs of other types of air compressors that (1) piston and centrifugal air compressors is not the main cooling fan motor,[link widoczny dla zalogowanych], the actual use do not need to be installed in general, so No additional power cost of this part. (2) piston air compressors due to the need to overhaul a year, generally also take into account during the month of overhaul can not be run; another relative to other models, the cost of salaries a year overhaul of about increase of 0.4 million. '(3) screw air compressor rotor surface is generally a special coating, with the running wear, coating will fall off; and due to seal wear and tear easily lead to the deterioration of air quality,[link widoczny dla zalogowanych], Every 5 years continuous operation to replace the nose, this part of the cost of about l5 million yuan each, which is the unit used to maintain the level of units. (4) centrifugal air compressor may be required during the life of one of AC Yingyong , tiaoliu time to replace bearings and other parts cost of about 2O million overhaul, which by the use of the unit to maintain the level of the decision unit may also need to replace the useful life. (5), piston air compressors and screw air compressor volume control are added / unload mode, volume adjustment range is 0 to 100% of the two. The gas control system on the network with the tracheal pressure to follow the good, you can add / uninstall to achieve the purpose of stabilizing the system pressure. (6 ) centrifugal air compressor with intake valve gas control regulation and control and automatic dual control of two, volume adjustment range is l% ~ 100%, gas consumption and stability, flow, run, reliable, and high efficiency. the centrifugal sudden change in air consumption of air compressor surge when the phenomenon and the role of surge protection, likely to cause a sudden loss of network system with the tracheal pressure, affecting the normal gas. (7) Non-scale soft water cooling system and water temperature conditions a lot. three models from Table 2 pre-cooled compressed air discharge temperature can be seen, screw air compressor highest temperature, the water cooling system, scaling the most serious, the most frequent cleaning of the normal operation,[link widoczny dla zalogowanych], the cost also the highest. 8 Conclusion According to the specific circumstances and the use of units of the actual process requirements of compressed air, used air compressors for production needs. not only should not be greedy, seeking foreign, blind selection of quality models and high cost of unnecessary spending more can not blindly selected in order to save costs and frequent failures sufficient number of the poor quality of models, after all, is the air compressor to provide compressed air source for pharmaceutical production of a major power equipment. Based on the purpose of stable supply of compressed air, the choice of screw and centrifugal models used in combination with complementary advantages,[link widoczny dla zalogowanych], this combination is the compressed air system meets the selection process requires a strong guarantee. If,[link widoczny dla zalogowanych], for economic accounting considerations, selection of inexpensive high-quality piston do what it would have a suitable model wise to the actual needs of the unit. Received :2006-06-15 Description: Huang Xu (1968 -), Wuxi, Jiangsu, engineers, bidding Jiangsu Complete Equipment Co., Ltd. Branch Vice President. Research: complete sets of equipment and corporate management. Electrical and Information l7 2006, 41 of 125 total
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