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China Resources Power Plant Changshu two 600MW supercritical unit start-up commissioning


(Continued on page 12) * 9. Hunan power unit to start with debugging the first 25 / 2005 Supplement 3.3 600MW unit failure debug 3: adjustment of the turbine oil lubricant oil supply unit is used turbine oil, rather than the traditional shot oil supply device,vibram five fingers outlet, according to unit start-up manual requirements, 3000r/min required to adjust the oil turbine tests in the factory under the guidance of the oil turbine throttle and bypass valves to adjust, but no matter by what means, the host is not up oil pressure adjustment , causing the host exchange oil pump and start pump not stop the consequences. Lubricant by the host system (including the main oil pump, turbine oil, oil cooler, check valve, throttle plate into the oil bearing lubrication, etc.) to find and analysis,tods shoes outlet, we found the problem in the throttle plate, the bearing into the oil throttle plate into the oil filters that fit together with the oil filter and cutting cycle will be qualified with the plate removed, causing the host not to mention oil pressure up. Re-install the bearing into the pipe after the throttle plate, adjust the turbine oil test successfully completed. 3.4 Fault 4: steam-driven oil pump to bring water issues in the steam-driven water pump with pump try to turn a small oil discovery in the process exceeded its water content, for inspection and testing to adjust the pump stops: a. In the static, the seal water pressure adjusted to 0.1MPa, check the water hole steam pump out water from the pump back to the oil droplets can be seen in the spy window; b. In the static, the seal water pressure adjustment No. 1MPa, start small machine hood fan, gas water pump inspection hole into the vacuum; c. In the static, the seal water pressure adjusted to 0.1MPa, the small machine hood fan is not running, the oil from the pump back to the peep window no drops, but the red transfer process in the pump, check water, no water holes, small sharp rise in oil in water content; d. Come processing plant: opened pump bearings, the bearing oil block at the plot has plenty of water, rust, seal water to further verify the returned string into the bearing oil, pump seals as part of ready imported parts,Beats By Dre Studio, pump representatives do not agree disintegration, can not check the pump shaft and seals the gap and the existence of water-blocking film unreasonable; e. The pump seal water, unloading water, seal water pipes examination revealed unloading water return pipe of ~ 57, Institute of manufacturers to provide information on unloading for the water return pipe 89, through the accounts of both the flow area ratio 1: 2.56, may be caused by poor sealing an important reason for water return. The time being to take temporary measures: imports of seal water pressure gauge installation; the pressure and no pressure backwater backwater arranged on both sides in the middle of the summary after the outflow side of the return pipe to avoid the rush of water caused by the other side of the poor return problems; pump gas pipeline on the side of the backwater valve to increase the drain once; medical water pump, I asked the shell-hole to install fan, and strive to check the water leakage into the hole in the water out. These temporary measures, the unit is operating to see,herve leger sale, basically solved the problem of the oil with water, but to solve the problem, need to seal components and structure of water-blocking film to improve. 4 Conclusions and Recommendations At present, domestic production and will be put into the 600Mw supercritical steam turbine start, three major turbine manufacturers only East steam default startup mode for the pressure cylinder start-up mode, the other 2 factory default for the high-pressure cylinder starts, compared to high-pressure cylinder startup mode in the cold, the pressure cylinder to shorten start-up time does not start, but hot and very hot, the pressure cylinder has a more flexible way to start, start the process of the advantages of low consumption of life, help reached quickly rushed to switch the boiler parameters. Of course, the pressure cylinder bypass system start-up mode control for demanding more, in addition, DEH control the heating cylinder requires a combination of reasonable procedures to test the actual process of optimization. (Continued from page 9) supercritical 600MW units,MBTシューズ 販売店, ignition prior to the water. Boiler water rinse under hot, there is no clear standard wash, cold only reference standard, compared to similar foreign units, boiler water quality iron and silica less than 1O prevail. At present, the red tube in accordance with the eligibility criteria to determine the step-down red tube, red tube dynamically during the installation of the target spot problems, the main steam temperature and pressure reach the target spot color ugly; and long red tube regulator, causing the target spot Qualified difficult; necessary to modify the standard hedge tube. * 12.4 .7 security gate security door check superheater setting, usually in an empty sub-critical unit load stage superheater safety door setting. The super-critical unit at this stage superheater safety gate setting is very difficult, the pressure level of the pressure relief valve operation over 30.0MPa, and the bypass to ensure that the boiler by Bunsen traffic parameter control can be difficult; and super easy temperature, is very insecure. Has recommended the unit with a large load conditions in the superheater safety gate setting, the load at 75 ~ 85BMCR, with extremely heavy method superheater safety valve for the entire set.
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