發(fā)布時(shí)間：2018-01-03 13:00

  本文關(guān)鍵詞：組合型線渦旋壓縮機(jī)型線設(shè)計(jì)與渦旋齒的有限元分析　出處：《蘭州理工大學(xué)》2011年碩士論文　論文類(lèi)型：學(xué)位論文

  更多相關(guān)文章： 渦旋壓縮機(jī) 組合型線 有限元分析 ANSYS Workbench

【摘要】：渦旋壓縮機(jī)是近些年發(fā)展起來(lái)的一種新型壓縮機(jī)械,具有效率高、能耗小、結(jié)構(gòu)緊湊、運(yùn)行平穩(wěn)等特點(diǎn)。然而,傳統(tǒng)的單一型線渦旋壓縮機(jī)由于自身固有的結(jié)構(gòu)特點(diǎn)使其空間利用系數(shù)和效率都受到了限制。在開(kāi)發(fā)高壓縮比渦旋壓縮機(jī)時(shí),渦旋圈數(shù)的增加使得泄漏線加長(zhǎng),造成壓縮腔泄漏量增加,導(dǎo)致效率降低,同時(shí)渦旋圈數(shù)的增加也使得加工成本增大。 針對(duì)這種情況,應(yīng)用組合型線來(lái)優(yōu)化單一渦旋型線,利用不同嚙合曲線的自身特點(diǎn),使得組合渦旋型線能夠兼顧吸氣、壓縮、排氣的全過(guò)程,從而達(dá)到提高面積利用系數(shù)、增大排氣量和壓縮比、縮短型線長(zhǎng)度、減少加工成本的目的。 論文首先論述組合型線的嚙合條件、通用型線控制方程的推導(dǎo)及平面曲線理論,并利用法向等距線法生成基圓漸開(kāi)線-高次曲線-基圓漸開(kāi)線組合渦旋型線,推導(dǎo)出壓縮腔的動(dòng)態(tài)容積和動(dòng)態(tài)壓強(qiáng)計(jì)算方程。然后結(jié)合實(shí)例,在不改變吸氣、排氣容積和壓縮比的前提下,對(duì)單一基圓漸開(kāi)線渦旋壓縮機(jī)進(jìn)行優(yōu)化,計(jì)算出組合型線渦旋壓縮機(jī)的吸氣、排氣容積、工作腔壓強(qiáng)、型線長(zhǎng)度等數(shù)據(jù),使之與原基圓漸開(kāi)線型線的數(shù)據(jù)進(jìn)行對(duì)比,結(jié)果顯示:使用組合型線能夠大幅減少型線長(zhǎng)度。最后,使用ANSYS Workbench有限元分析平臺(tái)對(duì)兩種型線的渦旋齒進(jìn)行應(yīng)力與變形的分析,并對(duì)比了兩種型線的應(yīng)力和變形數(shù)據(jù),結(jié)果顯示:兩種型線渦旋盤(pán)的應(yīng)力和變形相似,不會(huì)影響壓縮機(jī)的性能。因此,使用基圓漸開(kāi)線-高次曲線-基圓漸開(kāi)線組合型線優(yōu)化基圓漸開(kāi)線渦旋壓縮機(jī)的型線長(zhǎng)度是完全可行的。
[Abstract]:Scroll compressor is a new type of compression machinery developed in recent years, which has the characteristics of high efficiency, low energy consumption, compact structure and smooth operation. The space utilization coefficient and efficiency of the traditional single-type scroll compressor are limited because of its inherent structural characteristics. In the development of high compression ratio scroll compressor, the increase of the number of scroll circles makes the leakage line longer. The leakage of the compression cavity increases, the efficiency decreases, and the number of vortex coils increases the processing cost. In view of this situation, the combined profile is used to optimize the single vortex line, and the characteristics of different meshing curves are used to make the combined vortex line take into account the whole process of suction, compression and exhaust. In order to increase the area utilization coefficient, increase the exhaust volume and compression ratio, shorten the length of the profile, and reduce the processing cost. This paper first discusses the meshing condition of the combined profile, the derivation of the general control equation of the profile and the theory of plane curve, and uses the normal equidistant line method to generate the basic circle involute, the high order curve and the base circle involute combined vortex profile. The calculation equations of dynamic volume and dynamic pressure of compression cavity are derived. Then the involute scroll compressor with a single base circle is optimized without changing the suction exhaust volume and compression ratio. The suction, exhaust volume, working cavity pressure, profile length and other data of the combined scroll compressor are calculated and compared with the data of the original involute profile of the base circle. The results show that the length of the profile can be greatly reduced by using the combined profile. Finally, the stress and deformation of the vortex teeth of the two profiles are analyzed by using the ANSYS Workbench finite element analysis platform. The results show that the stress and deformation of the vortex disk are similar and will not affect the performance of the compressor. It is feasible to optimize the profile length of the involute scroll compressor by using the combination of involute of base circle, high order curve and involute of base circle.
【學(xué)位授予單位】：蘭州理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2011
【分類(lèi)號(hào)】：TH455

【引證文獻(xiàn)】

中國(guó)碩士學(xué)位論文全文數(shù)據(jù)庫(kù) 前1條

1 黃成東;基于信息熵的渦旋壓縮機(jī)的故障診斷研究[D];蘭州理工大學(xué);2012年

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本文編號(hào)：1373976