外加壓靜壓型機(jī)械密封均壓槽設(shè)計對動態(tài)性能的影響
發(fā)布時間:2018-10-29 13:49
【摘要】:外加壓靜壓氣體密封在啟停等低速運轉(zhuǎn)狀態(tài)下具有良好的性能,并且便于通過調(diào)節(jié)氣源進(jìn)行干預(yù)。密封在運行過程中會受到非浮動環(huán)的竄動和偏擺的影響,故需要良好的追隨性以維持密封穩(wěn)定有效工作。本文采用小擾動法分別計算了采用整周和分區(qū)均壓槽的外加壓靜壓氣體密封的動特性系數(shù),然后進(jìn)一步計算追隨性,并進(jìn)行了對比。結(jié)果表明,采用不同均壓槽形式的密封在軸向上的性質(zhì)差別不大,但相比于采用整周均壓槽,采用分區(qū)均壓槽的靜壓氣體密封具有顯著更高的角向直接動剛度、更好的對非浮動環(huán)偏擺的追隨性。
[Abstract]:The external pressurized hydrostatic gas seal has good performance in low speed operation, such as starting and stopping, and it is convenient to intervene by adjusting the gas source. The seal will be affected by the movement and deflection of the non-floating ring during operation, so it is necessary to keep the seal stable and effective. In this paper, the dynamic characteristic coefficients of external pressurized hydrostatic gas seals with full cycle and zonal equal pressure grooves are calculated by using small perturbation method, and the following characteristics are further calculated and compared. The results show that there is little difference in the axial properties of the seals with different uniform pressure slots, but the hydrostatic gas seals with zonal pressure sharing grooves have significantly higher angular direct dynamic stiffness than those with full cycle uniform pressure grooves. Better follow the non-floating ring pendulum.
【作者單位】: 清華大學(xué)摩擦學(xué)國家重點實驗室;深圳中廣核工程設(shè)計有限公司;北京化工大學(xué);
【基金】:國家重點基礎(chǔ)研究計劃項目(2012CB026003) 國家科技重大專項課題(ZX06901) 國家科技支撐計劃課題(2015BAA08B02)
【分類號】:TH136
本文編號:2297871
[Abstract]:The external pressurized hydrostatic gas seal has good performance in low speed operation, such as starting and stopping, and it is convenient to intervene by adjusting the gas source. The seal will be affected by the movement and deflection of the non-floating ring during operation, so it is necessary to keep the seal stable and effective. In this paper, the dynamic characteristic coefficients of external pressurized hydrostatic gas seals with full cycle and zonal equal pressure grooves are calculated by using small perturbation method, and the following characteristics are further calculated and compared. The results show that there is little difference in the axial properties of the seals with different uniform pressure slots, but the hydrostatic gas seals with zonal pressure sharing grooves have significantly higher angular direct dynamic stiffness than those with full cycle uniform pressure grooves. Better follow the non-floating ring pendulum.
【作者單位】: 清華大學(xué)摩擦學(xué)國家重點實驗室;深圳中廣核工程設(shè)計有限公司;北京化工大學(xué);
【基金】:國家重點基礎(chǔ)研究計劃項目(2012CB026003) 國家科技重大專項課題(ZX06901) 國家科技支撐計劃課題(2015BAA08B02)
【分類號】:TH136
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