Flow analysis of a switching valve with innovative poppet head geometry by means of CFD method
Authors:
- Grzegorz Filo,
- Edward Lisowski,
- Janusz Rajda
Abstract
The article presents an analysis of flow through a differential switching valve installed inside a throttle-check valve block. The valve is mounted in a sandwich type arrangement together with a control valve according to ISO 4401 standard. This type of block arrangement is popular and commonly used in hydraulic drive systems. The development of a typical throttle-check valve using a differential switching valve makes it possible to add a secondary fluid stream and thus increase the inflow rate to an actuator, which is particularly important in fixed-delivery pump systems. Due to the limited range of valve dimensions and the need to adapt flow paths to connection ports, channels of complex geometry are made inside the valve block. Therefore, the main aim of the work was to properly profile geometry of the differential switching valve spool in order to obtain a smooth opening in the entire displacement range. A 3D model of flow paths was built and CFD analysis was carried out. The obtained results of numerical simulations have been confirmed experimentally on a test bench. The CFD analysis allowed values of velocity and pressure profiles as well as axial flow force acting on the spool to be determined. The proposed new shapes of the spool head geometry significantly increase the spool head operating range. Although flow rate in the initial phase of switching valve opening was reduced, the amplitude of fluid flow fluctuations also decreased.
- Record ID
- CUT058307e10f3f4404bf9ddf1c3f5d2592
- Publication categories
- ;
- Author
- Journal series
- Flow Measurement and Instrumentation, ISSN 0955-5986, e-ISSN 1873-6998
- Issue year
- 2019
- Vol
- 70
- Pages
- [1-10]
- Article number
- 101643
- Other elements of collation
- fot.; tab.; wykr.; Bibliografia (na s.) - 10; Bibliografia (liczba pozycji) - 25; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 70
- Keywords in English
- switching valve, poppet geometry, flow analysis
- DOI
- DOI:10.1016/j.flowmeasinst.2019.101643 Opening in a new tab
- URL
- https://www.sciencedirect.com/science/article/pii/S0955598619301463?via%3Dihub Opening in a new tab
- Language
- eng (en) English
- Score (nominal)
- 70
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT058307e10f3f4404bf9ddf1c3f5d2592/
- URN
urn:pkr-prod:CUT058307e10f3f4404bf9ddf1c3f5d2592
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.