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 Wysłany: Nie 21:14, 23 Sty 2011 Temat postu: Lianhu Pump Station Inlet Road Test and Analysis _ |
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Lianhu Pump Station Inlet Road Test and Analysis
Flow, according to the model than 1:20, a different law similar to the relationship between model and real machine are presented in Table 1. Table 1 Model and the ratio between the real machine pump inlet conduit in Lianhu initial design, Ebara based on past experience, set up in the flow channel in the pier and the separation column, while the number of flow in the same Flod and average velocity, throughout the experiment test a variety of water into the pool water level does not appear vortex, but with equal speed test, after the water separation column is a 2 (a) type of water whirlpool. Inlet passage in the typical flow patterns shown in Figure 3. Loop 3 of the original design flow models typical flow patterns in order to improve the inlet flow conditions, Ebara flow channels in a number of modifications and tests, shortening the length of partition,[link widoczny dla zalogowanych], to reduce the size and the separation column placement, one hundred and eleven eleven thousand one hundred and eleven in 2003 China Rural Water and Hydropower 9 of 13 East Water Supply Improvement Project Risk Management of Electrical and Mechanical Liu Li Ping (Shenzhen Water Supply Improvement Project Construction Headquarters Dongguan,[link widoczny dla zalogowanych], Guangdong 523710) Abstract The project uses the supervision system, tender documents presentation, the establishment of bid bonds and performance bonds, bid evaluation approach taken, contract risk management, and social intermediary organizations to hire professional consulting introduces East Water Supply Improvement Project risk management of electrical and mechanical engineering, electrical and mechanical responses of the project risk management characteristics. Keywords risk management supervision system, electrical and mechanical bond risk aversion East Water Supply Improvement Project, including electrical and mechanical parts of pumps, motors, electrical equipment, computer monitoring system, optical fiber communications, cranes, metal structure, the amount of tapping points along the water equipment, the new 110kV line and part of the transformation of the old lines, and electrical and mechanical equipment installation works. These electrical and mechanical performance of the contract,[link widoczny dla zalogowanych], regardless of the command or suppliers, installation contractors, the quality can happen, progress, reach the target investment risk. If force majeure occurs, will also lead to unexpected losses. In order to reasonably avoid the risk, control project costs, and the signing of the contract in the project implementation, the command attaches great importance to project risk management. 1 Electrical Engineering Risk Management Supervision System to 1.1 by the whole East Water Supply Improvement Project Supervision of Electrical and Mechanical engineers with the whole process of supervision. Supervision consists of three areas: design and supervision, construction supervision, equipment supervision. Supervision of engineers from all over the country, experienced, strong sense of responsibility. Supervising engineer on the design, equipment selection, material selection, review of tender documents, the host equipment, equipment inspection, the construction process tracking, engineering change, system commissioning, completion and acceptance of the whole process of participation, to monitor and maximize limited the deviation in all aspects. With supervision system, the objective of the project effectively avoid human error and because of possible risks. 1.2 The careful preparation and review of tender documents procurement of mechanical and electrical equipment and electrical installation works,[link widoczny dla zalogowanych], tender documents, the draft prepared by the Institute to submit technical supervision of engineers and headquarters staff review, the final design by the command staff organization, supervision engineers and outside experts to , the headquarters technical staff joint hearing. By absorbing,[link widoczny dla zalogowanych], weaknesses, and strive to carefully tender documents, detailed, technical and business aspects from the clear requirements of the bidding process to avoid the situation is not comparable, but also try to avoid the contract unit or determine the winning bid after the bid request the phenomenon of increase . Tender document preparation and review of the detailed rigorous procurement contracts for equipment and equipment installation contract to lay a solid foundation and a clearly defined scope, effectively makes the modified water inlet conduit into the pump become more stable, the other a typical flow speed trials Figure 4.5 Conclusion of Lianhu Pumping Station has been running in a variety of flow and the pump into the pool water level observation of the operation, and pump water into the conduit flow smoothly around El speakers, pump vibration and noise are met the original contract requirements. Note the shape of lotus lake inlet conduit is used to adapt the pump, the flow channel used in a variety of measures to eliminate vortex is also effective. In addition, the Lianhu Pumping Station into the conduit used by the test methods, in particular the principle of three similar test velocity selection, should be the next major domestic test pump inlet passage reference and reference. Mouth
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