本文選題：臨界轉(zhuǎn)速 + 試驗(yàn)研究��； 參考：《汽輪機(jī)技術(shù)》2017年05期

【摘要】：汽輪發(fā)電機(jī)組在臨界轉(zhuǎn)速時(shí)轉(zhuǎn)子的振幅急劇增大,造成動(dòng)靜之間碰摩,給機(jī)組帶來一定的危害。轉(zhuǎn)子臨界轉(zhuǎn)速的計(jì)算方法多種,但是往往計(jì)算結(jié)果與實(shí)際誤差較大。通過伯德圖法、頻譜分析法和李莎茹圖法進(jìn)行轉(zhuǎn)子臨界轉(zhuǎn)速測(cè)量,實(shí)驗(yàn)結(jié)果顯示3種方法所測(cè)結(jié)果基本一致,并確定選取伯德圖法測(cè)量轉(zhuǎn)子臨界轉(zhuǎn)速較為準(zhǔn)確;通過改變轉(zhuǎn)子上輪盤的質(zhì)量和位置變化,利用伯德圖進(jìn)行轉(zhuǎn)子臨界轉(zhuǎn)速測(cè)量,得出隨著質(zhì)量的增大轉(zhuǎn)子臨界轉(zhuǎn)速會(huì)減小,在偏離轉(zhuǎn)子中心位置較遠(yuǎn)處影響不大;相同質(zhì)量情況下,輪盤偏離轉(zhuǎn)子中心越遠(yuǎn),轉(zhuǎn)子臨界轉(zhuǎn)速增加得越快。該試驗(yàn)結(jié)論可指導(dǎo)工程實(shí)踐,對(duì)現(xiàn)場(chǎng)臨界轉(zhuǎn)速的計(jì)算、仿真和實(shí)驗(yàn)起到一定的借鑒作用。
[Abstract]:The amplitude of the rotor increases sharply at the critical speed of the turbine-generator unit, which results in rub-impact between the dynamic and static, and brings certain harm to the unit. There are many methods to calculate the critical speed of the rotor. The critical speed of rotor is measured by Berdtu method, spectrum analysis method and Lisaru chart method. The experimental results show that the results of the three methods are basically the same, and it is determined that the Birdchart method is more accurate to measure the critical speed of the rotor. By changing the mass and position of the wheel on the rotor, the critical speed of the rotor is measured with the Byrd diagram. It is concluded that the critical speed of the rotor will decrease with the increase of mass, and the influence of the distance from the center of the rotor is not significant. At the same mass, the farther the wheel deviates from the center of the rotor, the faster the critical speed of the rotor increases. The experimental results can guide engineering practice and can be used for reference in the calculation, simulation and experiment of the critical speed in the field.
【作者單位】： 沈陽(yáng)工程學(xué)院能源與動(dòng)力學(xué)院;中國(guó)國(guó)電科學(xué)技術(shù)研究院;
【分類號(hào)】：TM621

【相似文獻(xiàn)】

相關(guān)期刊論文 前5條

1 王金明;確定修后轉(zhuǎn)子臨界轉(zhuǎn)速的現(xiàn)場(chǎng)方法[J];節(jié)能;1994年08期

2 羅文泉;一種測(cè)量轉(zhuǎn)子臨界轉(zhuǎn)速的簡(jiǎn)易教學(xué)實(shí)驗(yàn)裝置[J];實(shí)驗(yàn)室研究與探索;1996年02期

3 熊志斌;轉(zhuǎn)子臨界轉(zhuǎn)速理論在我廠電機(jī)試制中的一次應(yīng)用[J];中小型電機(jī);1997年05期

4 羅孟杰，，胡家　，徐玉秀，袁靜;柔性軸電機(jī)轉(zhuǎn)子臨界轉(zhuǎn)速的動(dòng)態(tài)測(cè)試技術(shù)研究[J];沈陽(yáng)工業(yè)大學(xué)學(xué)報(bào);1996年03期

5 胡一明;石曉輝;施全;易鵬;;高速鼠籠電機(jī)轉(zhuǎn)子臨界轉(zhuǎn)速的計(jì)算與分析[J];重慶理工大學(xué)學(xué)報(bào)(自然科學(xué));2013年05期

本文編號(hào)：1978878