1. The pressure reducing valve is a valve that reduces the inlet pressure to a certain required outlet pressure through adjustment, and relies on the energy of the medium itself to automatically maintain a stable outlet pressure. From the point of view of fluid mechanics, the pressure reducing valve is a throttling element whose local resistance can be changed, that is, by changing the throttling area, the flow velocity and the kinetic energy of the fluid are changed, resulting in different pressure losses, so as to achieve the purpose of decompression. Then rely on the adjustment of the control and regulation system to balance the fluctuation of the post-valve pressure with the spring force, so that the post-valve pressure remains constant within a certain error range.
2. The safety valve is the opening and closing part that is in a normally closed state under the action of external force. When the medium pressure in the equipment or pipeline rises above the specified value, it will prevent the medium pressure in the pipeline or equipment from exceeding the specified value by discharging the medium to the outside of the system. special valves. Safety valves are automatic valves, mainly used in boilers, pressure vessels and pipelines, to control the pressure not to exceed the specified value, and play an important role in protecting personal safety and equipment operation.
2. The main difference between the pressure reducing valve and the safety valve:
1. The pressure reducing valve is a device that reduces the medium with high pressure to the medium with low pressure. The pressure and temperature values are within a certain range.
2. Safety valves are valves used to prevent boilers, pressure vessels and other equipment or pipelines from being damaged due to overpressure. When the pressure is slightly higher than the normal working pressure, the safety valve will automatically open to reduce the pressure. When the pressure is slightly lower than the normal working pressure, the safety valve closes automatically, stops discharging fluid and keeps sealing. Simply put, the safety valve is to prevent the pressure of the system from exceeding a certain value, and is mainly used to protect the system. The pressure reducing valve is to reduce the pressure of the system from high pressure to a desired value, and its outlet pressure is within a range, as long as it is within this range.
3. Safety valve and pressure reducing valve are two types of valves, which are special valves. Among them, the safety valve belongs to the safety release device , which is a special valve, which only acts when the working pressure exceeds the allowable range, and plays a protective role in the system. The pressure reducing valve is a process valve that can decompress high-pressure logistics to meet the pressure requirements of the post-processing system. Its working process is continuous.
Post time: Aug-31-2023