【摘要】：在改革開放以后，我國閥門行業(yè)欣欣向榮，而蝶閥也受到了許多應用領域的青睞，以往的普通蝶閥已經(jīng)很難滿足更加嚴酷的應用環(huán)境和更加嚴格的性能要求。而三偏心蝶閥的出現(xiàn)，改變了蝶閥的密封材料，用金屬硬密封形式來取代以往的非金屬密封形式。這一設計不僅提高了蝶閥密封副的使用壽命，而且耐高溫、耐高壓和具有良好的密封效果，擴大了蝶閥的適用領域。但目前國內(nèi)還沒有形成一個較為完善的分析體系，從而使三偏心蝶閥的發(fā)展和應用仍受到一定的限制。 本文以三偏心蝶閥為研究對象，對其結構、受力進行了簡單的分析，歸納出蝶閥蝶板的各主要截面技術參數(shù)的計算公式、蝶閥各偏心值的計算公式；并通過理論分析，對其摩擦力矩和密封力矩進行了分析；總結出三偏心值對蝶閥所受摩擦力矩和密封力矩的影響，，列出了蝶閥各偏心值的適宜區(qū)域。 本文以600Ds343H雙向多層次硬密封蝶閥為例，通過歸納出的公式，計算出600Ds343H雙向多層次硬密封蝶閥的蝶板主要截面輪廓線上的主要技術參數(shù)和各偏心值。并通過所得出的各參數(shù)，建立600Ds343H雙向多層次硬密封蝶閥的數(shù)值模擬分析模型，通過ANSYS有限元軟件對其受力和流場進行分析，對所得分析結果進行對比分析，驗證以上的設計方案是否合理。
[Abstract]:After the reform and opening up, the valve industry in our country is flourishing, and butterfly valve has been favored by many application fields. In the past, ordinary butterfly valve has been difficult to meet the harsher application environment and more stringent performance requirements. The appearance of triple eccentric butterfly valve changed the sealing material of butterfly valve and replaced the former non-metallic seal form with metal hard seal. This design not only improves the service life of butterfly valve seal pair, but also has high temperature, high pressure resistance and good sealing effect, and expands the application field of butterfly valve. However, there is not a perfect analysis system in China, which limits the development and application of tri-eccentric butterfly valve. This paper takes the three-eccentric butterfly valve as the research object, analyzes its structure and force simply, sums up the calculation formula of the main cross section technical parameters of butterfly valve butterfly plate and the calculation formula of each eccentric value of butterfly valve. Through theoretical analysis, the friction torque and sealing moment of butterfly valve are analyzed, and the influence of three eccentricities on friction moment and sealing moment of butterfly valve is summarized, and the suitable regions of each eccentric value are listed. Taking 600Ds343H bi-directional hard sealing butterfly valve as an example, the main technical parameters and eccentricity values of the main section profile of the butterfly plate of 600Ds343H bi-directional hard seal butterfly valve are calculated by the formula summarized in this paper. Through the obtained parameters, the numerical simulation analysis model of 600Ds343H bi-directional hard seal butterfly valve is established, and the stress and flow field of the valve are analyzed by ANSYS finite element software, and the results are compared and analyzed. Verify that the above design is reasonable.
【學位授予單位】：遼寧科技大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：TH134

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本文編號：2402026