Fig 1.
Multistage pressure reducing valve.
Fig 2.
The pressure reducing components.
(a) Inner sleeve. (b) Middle sleeve. (c) Outer sleeve. (d) Valve seat with noise reduction cage.
Table 1.
Fluid grid independence test data.
Fig 3.
Comparison of simulated flow rate with standard data.
Fig 4.
Pressure distribution of the flow field at different opening.
(a) 10% opening. (b) 50% opening. (c) 70% opening. (d) 100% opening.
Fig 5.
Radial deformation of the inner sleeve and valve plug at a 50% opening.
(a) Valve plug. (b) Inner sleeve.
Fig 6.
Radial deformation of the matching surfaces at a 50% opening.
(a) Valve plug. (b) Inner sleeve.
Fig 7.
Comparison curves of the deformations of the matching surface.
(a) Valve plug. (b) Inner sleeve.
Fig 8.
Measuring location of the valve trims.
(a) Valve plug. (b) Inner sleeve.
Table 2.
Measurement data of different locations of valve trims.
Fig 9.
Clearances after deformation of the matching surface at a 10% opening.
(a) Initial clearance: 0.073 mm. (b) Initial clearance: 0.010 mm.
Fig 10.
Clearances after deformation of the matching surface at a 50% opening.
(a) Initial clearance: 0.073 mm. (b) Initial clearance: 0.010 mm.
Fig 11.
Clearances after deformation of the matching surface at a 100% opening.
(a) Initial clearance: 0.073 mm. (b) Initial clearance: 0.010 mm.
Table 3.
The simulation clearances at different openings when different initial clearances are set.