氣動疏水閥沖蝕工況數(shù)值模擬及結(jié)構(gòu)優(yōu)化
發(fā)布時(shí)間：2019-03-30 13:29
【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(jìn)行了模擬分析。通過將模擬結(jié)果與現(xiàn)場運(yùn)行的閥門的實(shí)際狀況進(jìn)行對比驗(yàn)證了模擬的準(zhǔn)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(yán)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(yuǎn)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(jìn)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(jì)。模擬計(jì)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(shí)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(yán)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(xué)承壓系統(tǒng)與安全教育部重點(diǎn)實(shí)驗(yàn)室;
【分類號】：TH134
本文編號：2450121
[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(xué)承壓系統(tǒng)與安全教育部重點(diǎn)實(shí)驗(yàn)室;
【分類號】：TH134
【相似文獻(xiàn)】
相關(guān)期刊論文 前3條
1 馮雨田;代替氣動疏水閥的一種孔板裝置[J];輕金屬;2001年01期
2 ;永盛儀表“Y形氣動疏水閥”產(chǎn)品通過國家重大技術(shù)裝備關(guān)鍵零部件產(chǎn)品項(xiàng)目驗(yàn)收[J];深冷技術(shù);2009年05期
3 ;[J];;年期
，本文編號：2450121
本文鏈接：http://sikaile.net/jixiegongchenglunwen/2450121.html
最近更新
教材專著
