What are the hazards of excessive pressure of cast steel gate valve
Publisher：Botou Valve
Many people don't know that if the pressure of cast steel gate valve exceeds a certain range in work, it will do great harm to cast steel gate valve. Today, Xiaobian will tell you about the danger of excessive pressure in cast steel gate valve. In the face of excessive pressure of cast steel gate valve, how to solve the pressure of cast steel gate valve in work is certain. If it exceeds the range, it will be overpressure, which may have adverse consequences.
The working stress of the pressure-bearing parts and the opening and closing parts of the cast steel gate valve will increase sharply when overpressure occurs, and the driving force of the driving mechanism will be overwhelming or even unable to start. In serious cases, the stem will be pulled off, the gate frame will be broken, and the motor will burn out. These phenomena are common in many high-pressure and large-caliber cast steel gate valves. Damage caused by sudden boost: Cast steel gate valve housing.
The strength of valve cover and stem parts is generally designed with the nominal pressure of cast steel gate valve. When abnormal boost pressure occurs, the opening pressure will be doubled, resulting in the use stress of related parts doubled. When the material actual stress exceeds the allowable stress, the high stress parts will break down, leading to the failure of cast steel gate valve. The whole machine of cast steel gate valve will be damaged or scrapped.
It is obvious that it is very dangerous to destroy the safety of the system when the pressure-bearing parts such as shell and valve cover are over-pressured. Once the pressure is over-pressured, the weak parts of the pressure-bearing parts may perforate first, causing leakage of the medium. It will cause huge losses to the production control process. The normal opening and closing of the cast steel gate valve is the key to all kinds of industrial process control, once such control is not available. When the method is implemented, the system must be shut down for maintenance, which will cause huge direct or indirect losses. It is possible to eliminate abnormal boost in the middle cavity fundamentally from the aspects of design, installation and debugging.
