The flow rate and velocity of the valve mainly depend on the diameter of the valve, and are also related to the resistance of the structure of the valve to the medium, and at the same time have a certain internal relationship with the pressure, temperature and concentration of the medium of the valve.
The flow rate and velocity of the valve mainly depend on the diameter of the valve, and are also related to the resistance of the structure of the valve to the medium, and at the same time have a certain internal relationship with the pressure, temperature and concentration of the medium of the valve.
The flow channel area of the valve is directly related to the flow rate and flow rate, and the flow rate and flow rate are two interdependent quantities. When the flow rate is constant, the flow velocity is large, and the flow channel area can be smaller; If the flow velocity is small, the runner area can be larger. On the contrary, the flow channel area is large, and its flow velocity is small; The flow channel area is small, and its flow velocity is large. The flow rate of the medium is large, and the valve diameter can be smaller, but the resistance loss is large, and the valve is easy to be damaged. The flow rate is large, which will produce electrostatic effect on flammable and explosive media, causing danger; The flow rate is too small, inefficient and uneconomical. For viscous and explosive media, a smaller flow rate should be taken. The flow rate of oil and liquid with high viscosity is selected according to the viscosity, which is generally 0.1~2m/s.
In general, the flow rate is known, and the flow rate can be determined empirically.
The common flow rates of various media are shown in Table 2-2. The nominal diameter of the valve can be calculated from the flow rate and flow rate.
The valve diameter is the same, its structure is different, and the resistance of the fluid is also different. Under the same conditions, the greater the resistance coefficient of the valve, the more the flow rate and flow rate of the fluid through the valve decrease; The smaller the resistance coefficient of the valve, the less the flow rate and flow rate of the fluid through the valve will decrease.
(TWS) Tianjin Tanggu Water-seal Valve Co.,Ltd. mainly produce rubber seated butterfly valve /gate valve/Y-strainer flanged type /balancing valve/wafer dual plate check valve/Air release Valve/IP67 worm gear.We do OEM.
Post time: Sep-11-2024