The function of steam generator safety valve

The steam generator safety valve is an automatic pressure relief alarm device. Main function: When the boiler pressure exceeds the specified value, it can automatically open the exhaust steam pressure relief to prevent the pressure from continuing to rise. At the same time, it can sound an audio alarm to warn the boiler personnel so that necessary measures can be taken to reduce the boiler pressure to ensure the safety of the boiler and steam turbine. Safety.

When the boiler pressure drops to the allowable value, the safety valve can close itself, so that the boiler can operate safely within the allowable pressure range and prevent the boiler from overpressure and causing an explosion. The safety valve is mainly composed of a valve seat, a valve core and a pressurizing device.

Working principle of the safety valve: The channel in the safety valve seat is connected with the boiler steam space. The valve core is pressed tightly on the valve seat by the pressure generated by the pressurizing device. When the valve is closed; if the air pressure in the boiler is too high, the steam will The supporting force of the valve core also increases. When the supporting force is greater than the pressure of the pressurizing device on the valve core, the valve core is lifted away from the valve seat, leaving the safety valve in an open state, thereby allowing the steam in the boiler to be discharged to achieve relief. The purpose of pressing. When the air pressure in the boiler drops, the steam force on the valve core also decreases. When the steam pressure in the electric steam generator returns to normal, that is, when the steam force is less than the pressure of the pressurizing device on the valve core, the safety valve will automatically closure.

To prevent major accidents, adding a safety valve to a steam generator is a common safety method that plays a vital role in the safety of the enterprise. Configuring a safety valve can effectively avoid safety risks caused by pressure regulator wear, pipeline damage, etc., and effectively improve the safety performance of the equipment.

Safety valves are automatic valves that are mainly used in steam generators, pressure vessels (including high-pressure cleaners) and pipelines to control the pressure not to exceed the specified value and play an important role in protecting personal safety and equipment operation. The opening and closing parts of the safety valve are in a normally closed state due to external force. When the medium pressure in the equipment or pipeline rises above the specified value, the medium pressure in the pipeline or equipment is prevented from exceeding the specified value by discharging the medium outside the system.