The Factors and Strategies of Valve Regulation
Introduction
The valve plays an important role in pipe network and pipeline systems in industrial production, energy or city service. Its purpose is to adjust the pressure, flow and direction of switch, in order to facilitate the regulation of medium and realize seamless connection of the system pipe network. When the valve fails to work, the safety of the entire system will be affected. Therefore, the factors affecting valve regulation and the strategies of valve regulation need to be studied and considered.
Factors Affecting Valve Regulation
1. Length of Pipeline
The length of the pipeline has a great impact on the performance of the valve. When the pipeline length is small and the resistance coefficient is large, the flow rate of the flow medium cannot reach the design flow rate through the valve regulation. When the pipe diameter, the flow rate and all other factors remain unchanged, the longer the pipeline, the greater the flow rate of the flow medium through the valve, thus affecting the regulating effect of the valve.
2. Pressure Difference of Valve Ports
When the pressure difference between the valve inlet and outlet ports is too small, the regulating effect of the valve will be weakened, resulting in insufficient flow rate.
3. Diameter of Pipeline
The size of the pipeline has a great impact on the regulating effect of the valve. The larger the pipe diameter, the greater the flow rate through the valve, and the better the regulating effect of the valve. On the contrary, the greater the resistance coefficient, the less the flow rate through the valve, and the poorer the regulating effect of the valve.
4. Flow State of Flow Medium
The flow state of the flow medium has a great impact on the regulating effect of the valve. If the flow medium is in a turbulent flow state, the flow rate through the valve is small, which will reduce the regulating effect of the valve. On the contrary, if the flow medium is in a laminar flow state, the flow rate through the valve is large, which will increase the regulating effect of the valve.
Strategies of Valve Regulation
1. Practical Operation Strategy
The practical operation strategy of the valve should be adopted, that is, when the valve is in the normal working state, the valve should be operated slowly with small steps. When regulating the valve, the opening of the valve should be gradually reduced to maintain the flow rate, and then slowly increase according to the requirements, so as to avoid sudden pressure overload or overregulation, and maintain the normal operation of the valve.
2. Choose Pipeline
Choose the right pipeline, which not only meets the requirements of valve design and parameters, but also has strong adaptability and goodflow rate.
3. Choose Appropriate Flow Medium
Choose the appropriate flow medium and ensure the fluids flow characteristics, turbulence and resistance.
4. Proper Installation of Pipeline Network
The programming of pipe network should try to design gentle bends and avoid sharp angles, so as to reduce the pipe force and improve the hydraulic pressure.
Conclusion
In the regulation of valve, to reduce the failure rate and ensure the normal operation of the system, it is necessary to analyze and consider the factors which affect the regulation of valve, according to the specific working conditions. At the same time, it is necessary to take practical operation strategy, choose proper pipeline, select appropriate flow medium and make proper installation of pipeline network to improve the regulating effect of the valve and ensure the safety of the system.
