【摘要】：采用Eulerian-Lagrangian多相流模型對Y型氣動疏水閥的內(nèi)部流場進行了模擬分析。通過將模擬結(jié)果與現(xiàn)場運行的閥門的實際狀況進行對比驗證了模擬的準確性。研究發(fā)現(xiàn)閥門密封處液滴速度大于破壞閾值速度,此處沖蝕損傷嚴重。為減低閥門沖蝕損傷,提出通過閥內(nèi)流體中液滴對撞來降低液滴速度方法�；诖怂枷�,在疏水閥密封封面前加裝節(jié)流套裝置。發(fā)現(xiàn)液滴速度下降了52%,沖蝕損傷大幅下降且位置遠離密封面,但質(zhì)量流量下降到無節(jié)流裝置的56.5%。為了提高質(zhì)量流量,進而提出采用循環(huán)對流式迷宮式盤片組件作為閥芯的設(shè)計。模擬計算發(fā)現(xiàn)閥門液滴最大速度為78.6 m/s,僅為無盤片閥門的46%,同時的質(zhì)量流量為未加盤片閥門的78.2%。采用循環(huán)對流式迷宮式盤片組件作為閥芯的疏水閥適用于沖蝕嚴重的工況。
[Abstract]:The Eulerian-Lagrangian multiphase flow model is used to simulate the internal flow field of Y-type pneumatic trap. The accuracy of the simulation is verified by comparing the simulation results with the actual situation of the valve running in the field. It is found that the velocity of droplets in the valve seal is greater than the damage threshold velocity, and the erosion damage here is serious. In order to reduce valve erosion damage, a method is proposed to reduce droplet velocity by droplet collision in valve fluid. Based on this idea, a throttle sleeve device is installed in front of the seal cover of the trap valve. It was found that the droplet velocity decreased by 52%, the erosion damage decreased significantly and the location was far away from the sealing surface, but the mass flow rate decreased to 56.5% of the non-throttling device. In order to improve the mass flow rate, the circulating counterflow labyrinth disc module is proposed as the valve core design. The simulation results show that the maximum droplet velocity of the valve is 78.6 m / s, which is only 46% of that of the non-disk valve, and the mass flow rate is 78.2% of that of the non-disk valve. The circulating counterflow labyrinth disc assembly is used as the valve core and the drain valve is suitable for the condition of severe erosion.
【作者單位】： 華東理工大學承壓系統(tǒng)與安全教育部重點實驗室;
【分類號】：TH134

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