【摘要】：運(yùn)用CFD軟件Fluent對液壓滑閥內(nèi)部流場進(jìn)行可視化分析,詳細(xì)研究了閥芯受徑向壓力分布情況和影響因素。計(jì)算發(fā)現(xiàn),徑向壓力分布與閥口開度、入口流量、環(huán)割槽深徑比、進(jìn)出口油道的軸交角都有密切的關(guān)系。閥口開度越大,徑向壓力波動(dòng)越小;入口流量越大,環(huán)割槽深徑比越小,徑向壓力波動(dòng)越大;與進(jìn)出口軸交角為0°和90°相比,進(jìn)出口軸交角為180°時(shí)x=0截面的徑向壓力分布更平穩(wěn)。同時(shí),通過伯努利效應(yīng)對入口中心截面處閥芯周向壓力分布及閥芯軸向分段建立壓力方程,通過理論分析驗(yàn)證了仿真模型和結(jié)果的可靠性。最后分析了徑向力不平衡產(chǎn)生的卡緊力及徑向穩(wěn)態(tài)液動(dòng)力的分布及其影響因素。
[Abstract]:The internal flow field of hydraulic slide valve was analyzed visually by CFD software fluent, and the radial pressure distribution of the valve core and the influencing factors were studied in detail. It is found that the radial pressure distribution is closely related to the opening of the valve, the inlet flow rate, the ratio of the circumferential groove depth to the diameter, and the axial angle of the inlet and outlet oil channel. The greater the opening degree of the valve is, the smaller the radial pressure fluctuation is; the greater the inlet flow rate is, the smaller the ratio of depth to diameter of the ring cutting groove is, and the greater the radial pressure fluctuation is, compared with the angles of 0 擄and 90 擄for the inlet and outlet shafts. The radial pressure distribution of x0 section is more stable when the angle of inlet and outlet axis is 180 擄. At the same time, the pressure equation is established by Bernoulli effect on the circumferential pressure distribution of the valve core and the axial section of the valve core, and the reliability of the simulation model and the results are verified by theoretical analysis. Finally, the distribution and influencing factors of the clamping force and the radial steady-state hydrodynamic force caused by the radial force imbalance are analyzed.
【作者單位】： 浙江工業(yè)大學(xué)特種裝備制造與先進(jìn)加工技術(shù)教育部重點(diǎn)實(shí)驗(yàn)室;浙江大學(xué)城市學(xué)院工程分院;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(51375445) 浙江省自然科學(xué)基金資助項(xiàng)目(LZ13E050002)
【分類號】：TH137.52
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本文編號：2123357