發(fā)布時(shí)間：2018-08-28 17:55

【摘要】：本文介于金昊空壓機(jī)廠單螺桿壓縮機(jī)漏油嚴(yán)重的現(xiàn)象，設(shè)計(jì)出雙列反向螺旋槽上游泵送機(jī)械密封，對(duì)其進(jìn)行了解析計(jì)算，并運(yùn)用有限元軟件ANSYS及FLUENT，對(duì)穩(wěn)態(tài)密封環(huán)的溫度場(chǎng)、穩(wěn)態(tài)端面之間的壓力場(chǎng)進(jìn)行了模擬，得出了該密封環(huán)的壓力場(chǎng)、溫度場(chǎng)分布。研究了不同的摩擦副配對(duì)材料、密封介質(zhì)壓力、主軸轉(zhuǎn)速等對(duì)密封端面溫度的影響；并討論了密封腔壓力、轉(zhuǎn)速、密封介質(zhì)的粘度對(duì)機(jī)械密封的一些穩(wěn)定性能參數(shù)的影響，為設(shè)計(jì)、優(yōu)化機(jī)械密封提供了理論指導(dǎo)作用。模擬結(jié)果證明了該設(shè)計(jì)的正確性，變轉(zhuǎn)速或變壓力條件下，所設(shè)計(jì)的新型密封性能良好,端面溫升及摩擦功耗都較低，較普通的機(jī)械密封性能好，較單列的螺旋槽上游泵送機(jī)械密封性能也有所改善，滿足工業(yè)的應(yīng)用要求。最后對(duì)新型機(jī)械密封進(jìn)行了經(jīng)濟(jì)性的分析，使其在功能和經(jīng)濟(jì)上均達(dá)到要求。同時(shí)，，本文對(duì)于解決其他機(jī)械密封的泄露問(wèn)題，具有一定的指導(dǎo)意義和應(yīng)用價(jià)值。
[Abstract]:In this paper, due to the serious oil leakage of single screw compressor in Jinhao Air Compressor Plant, a double-row reverse spiral groove upstream pumping mechanical seal is designed and calculated analytically, and the temperature field of steady sealing ring is calculated by using finite element software ANSYS and FLUENT,. The pressure field and temperature field of the seal ring are simulated. The effects of different friction pairs on the temperature of seal end surface, such as the pressure of sealing medium, the pressure of sealing medium and the rotational speed of spindle, are studied, and the effects of pressure of seal chamber, speed of seal and viscosity of sealing medium on some stable performance parameters of mechanical seal are discussed. It provides theoretical guidance for the design and optimization of mechanical seals. The simulation results prove the correctness of the design. Under the condition of variable rotational speed or variable pressure, the new seal designed has good performance, the end surface temperature rise and friction power consumption are lower, and the performance of mechanical seal is better than that of common mechanical seal. Compared with single row spiral groove upstream pumping mechanical seal performance is also improved to meet the industrial application requirements. Finally, the economic analysis of the new mechanical seal is carried out to make it meet the requirements in function and economy. At the same time, this paper has certain guiding significance and application value for solving the leakage problem of other mechanical seals.
【學(xué)位授予單位】：遼寧工程技術(shù)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類(lèi)號(hào)】：TH136

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