Selection criteria for thickness of electric ball valve of stainless steel electric ball valve: the thickness of electric ball valve of stainless steel is usually determined by the working pressure value in the pipeline. Generally, the greater the working pressure, the thicker the thickness, the more layers are selected. On the contrary, the smaller the working pressure, the thinner the thickness, the fewer layers are selected. The hose is mainly reflected in four aspects: pressure bearing capacity, stiffness, stability, and fatigue life; Next, we will introduce the impact of each aspect.
1. Pressure bearing capacity: when the total thickness of multi-layer stainless steel electric ball valve is the same as that of single-layer stainless steel electric ball valve, the circumferential membrane stress and radial membrane stress caused by pressure are not affected. Since the material of each layer in the multi-layer structure is thin, the radial bending stress caused by pressure is increased.
2. Stiffness: As the material of each layer of the multi-layer stainless steel electric ball valve is thin, the overall axial stiffness of the stainless steel electric ball valve decreases and the flexibility increases.
3. Stability: because the material of each layer of multi-layer stainless steel electric ball valve is thin, the column stability and plane stability of stainless steel electric ball valve have decreased.
4. Fatigue life: because the material of each layer of multi-layer stainless steel electric ball valve is thin, the radial membrane stress and bending stress caused by displacement are reduced, and the fatigue life of multi-layer structure is higher than that of single-layer structure.