In the oil refining and chemical industry, valves are used to control the flow, pressure, temperature and liquid level of fluids, etc., to ensure the safety and efficient operation of process equipment. Common types of valves include:
1. Ball valves have a simple structure, easy operation, good sealing performance, and are suitable for high pressure and large flow occasions. In the oil refining and chemical industry, ball valves are widely used for pipeline switch control. The fluid flow is controlled by the rotation of the ball, and it is often used in occasions that require rapid switching.
2. Gate valves are suitable for large-caliber and high-pressure occasions, can withstand greater pressure, and have good sealing performance. In the oil refining and chemical industry, they are mainly used for switch control, usually in occasions that require full opening or full closing, to control flow and pressure.
3. The stop valve has good adjustment performance and strong sealing, and is suitable for small and medium-caliber pipeline systems. In the oil refining and chemical industry, it is mainly used to adjust flow, flow rate and fluid pressure, and is suitable for occasions that require precise adjustment.
4. Safety valve use: used to prevent the equipment from automatically discharging the medium when the pressure is overpressure or too high, to ensure system safety.
- Features: Automatic opening, pressure relief when system pressure exceeds the set value, key equipment to ensure system safety.
5. Check valve works automatically without external control, often used to prevent equipment damage or contamination. Its main purpose is to prevent medium backflow and ensure one-way flow of fluid, often used in pumping stations and pipeline systems.
6. Regulating valve accurately adjusts flow, usually equipped with electric or pneumatic actuators, often used in automatic control systems. Its use can control the state of fluid by adjusting flow, temperature, pressure, etc., and is often used in complex process flows.
These valve types are very important equipment in the refining and chemical industry. Each valve can play a vital role in different links according to its function, structural characteristics and application occasions.