Lets learn about quick closing valves together with manufacturers

Let's learn about the quick shut-off valve together with the manufacturer of the 0.3 second quick shut-off valve. Quick shut-off valve is an important component of the safety system of thermal power plant units, which ensures the safe operation of the extraction unit and prevents steam backflow in the extraction pipeline from causing turbine overspeed accidents. For this reason, the State Power Corporation emphasized in Article 8.1.10 of its "Twenty five Requirements for Preventing Major Accidents in Power Production" that "the adjustable extraction check valve of the extraction unit should be tight, the interlocking action should be reliable, and a quick closing extraction stop valve should be installed to prevent extraction backflow from causing overspeed".

The current safety measure adopted by the extraction unit to prevent overspeed caused by extraction backflow is to install check valves on the extraction pipeline. However, the current application of extraction check valves has the defects of slow closing response, loose closing, poor reliability, and inability to effectively prevent extraction backflow. It has caused several major accidents caused by extraction backflow leading to serious overspeed, posing a major safety hazard to production. Therefore, it is necessary to install a new type of safe and reliable quick closing valve on the pipeline to effectively prevent accidents and improve the safety performance of the unit.