Principle and setting of safety valve

The steam solenoid valves is a safety device that prevents the pressure device and the container from causing the pressure to rise or the pressure inside the container exceeds the limit. Safety valves are pressure vessels, boilers, pressure pipes and other pressure systems using a wide range of safety devices to ensure the safe operation of the pressure system.
When the container pressure exceeds the design requirements, the safety valve automatically open, exhaust gas reduction device over the high pressure to prevent damage to the container or pipeline. And when the pressure inside the container down to normal operating pressure, that is automatically closed to avoid the container overpressure to discharge all the gas, resulting in waste and production disruption.
air flow control valves mainly by the valve seat, valve (valve core) and loading mechanism of three parts. Some of the valve seat and the valve body is a whole, and the valve body is assembled together, it is connected with the device. The valve flap is often accompanied by a stem, which is fastened to the valve seat. The above valve is the loading mechanism, the size of the load can be adjusted. When the pressure inside the device within a certain working pressure range, the internal medium on the valve above the force is less than the loading mechanism attached to the valve above the force, the difference between the valve and the valve seat between the sealing force, So that the valve discs pressed the valve seat, the equipment can not be discharged media. When the pressure inside the device exceeds the specified working pressure and reaches the opening pressure of the safety valve, the force exerted by the inner medium on the flapper is greater than the force exerted on it by the loading mechanism, so that the valve flap leaves the valve seat, the safety valve opens, The medium is discharged through the valve seat, if the safety valve displacement is greater than the safety of the equipment discharge, the equipment pressure is gradually decreased, and through a short period of time after the exhaust, the pressure is back to normal working pressure. At this point the internal pressure on the valve above the force is less than the loading mechanism applied to it above the force, the valve plate and pressed the valve seat, the media stopped discharging, the equipment to maintain normal working pressure to continue to run. Therefore, the safety valve is through the valve on the media force and load mechanism of the force of the length of their own closed or open to achieve the purpose of preventing overpressure equipment.