Characteristic Analysis of Digital Emulsion Relief Valve Based on the Hydraulic Loading System

Table 3

Optimized structural parameters of relief valve.

Structural parameter	Initial value	Optimized value
Stiffness of pilot valve spring (N/mm)	14.3	14.4
Stiffness of main valve spring (N/mm)	9.038	9.3
Diameter of pilot valve damping hole (mm)	1.2	1.4
Diameter of main valve damping hole (mm)	1.2	1.4
Length of pilot valve damping hole (mm)	14.4	12
Length of main valve damping hole (mm)	14.4	12

Note: the remaining structural parameters are consistent with the initial parameters in Table 2.