本文關(guān)鍵詞：兩級(jí)刷式密封的流動(dòng)計(jì)算與系統(tǒng)參數(shù)的配置研究　出處：《潤(rùn)滑與密封》2017年10期 　論文類型：期刊論文

  更多相關(guān)文章： 刷式密封 級(jí)數(shù) 泄漏 叉排管束 計(jì)算流體力學(xué)

【摘要】：基于兩級(jí)刷式密封的刷絲束截面二維叉排管束模型,利用計(jì)算流體動(dòng)力學(xué)(CFD)方法研究?jī)杉?jí)刷式密封刷絲束截面泄漏流的壓力和流速分布規(guī)律,分析級(jí)數(shù)和級(jí)間距對(duì)出口平均軸向流速的影響,以及上下游級(jí)刷絲排數(shù)對(duì)級(jí)間分壓比的影響規(guī)律。結(jié)果表明:上下游級(jí)刷絲排數(shù)相同時(shí),兩級(jí)刷式密封存在級(jí)間壓力不均勻性,下游級(jí)承受的壓降要大于上游級(jí)承受的壓降,壓力增大會(huì)加劇級(jí)間壓力不均勻性;兩級(jí)刷式密封的泄漏量比單級(jí)的泄漏量要小,當(dāng)級(jí)數(shù)大于3后泄漏量的減少量很小;增加上游級(jí)刷絲排數(shù)或者減少下游級(jí)刷絲排數(shù)能改善級(jí)間壓力不均勻性。
[Abstract]:Two brush seal bristle staggered two-dimensional model based on the use of computational fluid dynamics (CFD) method to study the two bristle brush seal section leakage flow pressure and velocity distribution, influence analysis of series spacing on export average axial velocity, and the upper and lower level bristle rows on effect of two-stage compression ratio. The results show that the upper and lower level brush rows at the same level two brush seal has level pressure unevenness, pressure drop downstream stage to bear greater than that of the upper level under increasing pressure, will aggravate the level pressure uniformity; leakage two brush seal leakage is smaller than the single stage, when the series more than 3 leakage reduction amount is very small; increase the upstream stage wire brush rows or reduce the downstream stage bristle rows can improve the inter stage pressure unevenness.

【作者單位】： 中國(guó)地質(zhì)大學(xué)(北京)工程技術(shù)學(xué)院;清華大學(xué)摩擦學(xué)國(guó)家重點(diǎn)實(shí)驗(yàn)室;
【分類號(hào)】：TH136
【正文快照】： )j縥縥縥縥縥縥，

本文編號(hào)：1427498