Production and application of thrust bearing , and guide bearing made of filled ptfe in submarine motor pump are introduced 介紹了潛水泵中止推軸承與導(dǎo)向軸承用填充聚四氟乙烯材料進(jìn)行的生產(chǎn)和應(yīng)用。
First , the system boundary of machines affecting the shafts , such as the guide bearings , seal , electrical and hydraulic forces , the water in the runner etc , is analyzed . and the mathematic model of the system boundary of the machine is built 本文首先分析了對機(jī)組主軸系統(tǒng)影響較大的系統(tǒng)邊界條件,如導(dǎo)軸承、水封、電磁拉力、轉(zhuǎn)輪處的水體等,并分別建立了它們的數(shù)學(xué)模型。
Thirdly , the correlative coefficient is computed between the pressure fluctuation signal of draft tube and the displacement signal of upper guide bearing , the thrust bearing and the head cover , with this the conclusions on the shafts response due to pressure surge in 并與模型尾水管壓力脈動(dòng)試驗(yàn)結(jié)果進(jìn)行對比?結(jié)合流動(dòng)仿真試驗(yàn)以及動(dòng)力特性計(jì)算結(jié)果,全面分析?評定機(jī)組的實(shí)際運(yùn)行狀況,劃定運(yùn)行區(qū)域,為電站合理調(diào)度
Second , adopting the linearity of oil film of the guide bearings , the transient response of the shafts is computed and analysis by integrating with willson method . because of the uncertain position of the shafts in the guide bearing , the model and solution method of nonlinear transient response of the shafts is discussed 然后結(jié)合willson數(shù)值積分法,采用線性化油膜力,對機(jī)組軸系的線性瞬態(tài)響應(yīng)進(jìn)行了計(jì)算分析,根據(jù)機(jī)組軸系在瞬態(tài)響應(yīng)中運(yùn)動(dòng)的不確定性,給出了由導(dǎo)軸承油膜力非線性所引起的主軸系統(tǒng)的非線性瞬態(tài)響應(yīng)的建模及求解方法。