Optimization on the Topological Coupling-Throttling Structures for Directional Valves. Issue 1 (October 2020)

• Record Type: Journal Article
• Authors: Zhang, Xiaolu; Wang, Anlin; Chen, Yuanliu; Jiang, Tao
• Is Part Of: IOP conference series. Volume 585:Issue 1(2020)
• Publication Date: 2020-10
• Subjects: Earth sciences -- Periodicals; Environmental sciences -- Congresses; Environmental sciences -- Periodicals; 550.5
• DOI: 10.1088/1755-1315/585/1/012171
• Languages: English
• ISSNs: 1755-1307

Abstract

Abstract: As for the coupling-throttling effect of multiple grooves and notches on directional spool valves in the process of reversing, A parameterized mathematic model of the coupling-throttling effect for directional valves is proposed in this paper, which uses three basic throttling topological structures (O-shaped, U-shaped and C-shaped) to consist the topological variable space. Specifically, firstly, a bench test was carried out to verify the validation of 3D CFD simulation of the directional valve (on flow and pressure characteristics), which shows a consistent result. Then, on the premise of above, a parametric model of the coupling-throttling effect of multiple grooves and notches on directional valves is established, which accuracy is also proved with CFD simulation; under the constraints of limited topological variables, a topological structure of the coupling grooves and notches is optimized. It can be found from the test results that, the proportional characteristics of the working port is obviously improved, indicating that the parameterized mathematic expression of the coupling-throttling effect can be referred to for the design of such coupling structures.