Finite element analysis of the structure of the link levers of the labyrinth seal compressors 迷宮密封壓縮機(jī)連桿結(jié)構(gòu)有限元分析
Study of nonlinear dynamic stability of labyrinth seal - rotating wheel system in hydraulic turbines 水輪機(jī)迷宮密封系統(tǒng)非線性動(dòng)力穩(wěn)定性研究
The bottom bearing applies both labyrinth seal and frame seal , which have good performance of sealing . the main shaft is anticorrosive 下軸承端蓋密封采用雙重密封,可確保密封效果,主軸采用防腐新技術(shù),能保護(hù)主軸免受腐蝕。
By the use of the combination of suction labyrinth seal and inflator labyrinth seal and advanced materials , the machine gains long term operation 把原來(lái)簡(jiǎn)單的充氣式迷宮密封改為抽?充氣組合式迷宮密封,同時(shí)氣封采用更為高級(jí)的材質(zhì),實(shí)現(xiàn)了機(jī)組長(zhǎng)周期運(yùn)轉(zhuǎn)。
The main contents are as follows : firstly , the introduction of the labyrinth seals technology , including the classification the forms and the theory of labyrinth seals 本論文主要涉及以下內(nèi)容: 1 、介紹迷宮密封技術(shù),主要包括迷宮密封的分類、密封形式和密封原理。
Sixthly , this article analyses analyzes the influence of such main factors as the rotor whirling speed , the entrance pre - rotating speed , the entrance pressure and the seals clearance on the dynamic characteristics of labyrinth seals 6 、分析轉(zhuǎn)子轉(zhuǎn)速、入口預(yù)旋速度、入口壓力、密封間隙等幾種主要因素對(duì)迷宮密封動(dòng)力特性系數(shù)的影響。
A labyrinth seal is a non - contacting circumferential seal utilizing a tortured path for flow between the stationary and rotating ( or reciprocating ) parts . the design utilizes a series of pressure drops to reduce the leakage 迷宮密封是一種通過(guò)曲折通道增大流動(dòng)阻力來(lái)實(shí)現(xiàn)封嚴(yán)的非接觸密封,通常用于密封氣體,廣泛應(yīng)用于航空、能源、流體等領(lǐng)域的動(dòng)力機(jī)械中。
The combined seal is a new style of non - contact sealing . it solves the problem of big clearence of labyrinth sealing , improves the sealing performance and reduces oil consumption and therefore ensures the long run of equipments 這種組合密封方式是一種新型非接觸式密封形式,解決了以往迷宮密封間隙過(guò)大的問(wèn)題,提高了密封性能,減少了甩油量,從而從根本上保證了設(shè)備長(zhǎng)期運(yùn)行。
Labyrinth seals has been widely used in turbine machine , so the study on the theory of self - excited and dynamic characteristics has great important theoretical and practical meaning to the designing of a turbine machine with a sound dynamic function 迷宮密封廣泛應(yīng)用于透平機(jī)械,研究其激振原理和動(dòng)力特性系數(shù),對(duì)于設(shè)計(jì)一臺(tái)具有良好動(dòng)態(tài)性能的透平機(jī)械具有重要的理論和實(shí)際意義。