Views: 0 Author: J-VALVES Publish Time: 2025-05-09 Origin: Site
In high-pressure pipeline systems, DBB BALL VALVES are widely used, and their anti-blowout valve stem and self-relieving structures play a crucial role in ensuring the overall safety performance. The following will analyze in detail how these two structures enhance the safety performance of DBB BALL VALVES in high-pressure pipelines.
1.STRUCTURAL PRINCIPLE
The anti-blowout valve stem structure of the DBB BALL VALVE mainly prevents the valve stem from accidentally popping out under high-pressure environments through special limiting devices, fastening designs, and so on. For example, some use anti-rotation pins combined with high-strength nuts for fastening to limit the axial displacement of the valve stem, enabling it to remain firmly in the normal working position when subjected to the force of high-pressure media.
2.SAFETY FUNCTIONS
· Preventing Medium Leakage: Once the valve stem pops out, it will damage the valve's sealing system, leading to a large amount of leakage of high-pressure media and causing safety accidents. The anti-blowout structure can effectively avoid this situation.
· Ensuring Stable Operation: It enables operators to ensure that the valve stem moves along the expected trajectory when opening and closing the valve, preventing operational out-of-control due to accidental popping out and ensuring the smoothness of the operation process.
1.STRUCTURAL PRINCIPLE
The self-relieving structure usually utilizes special channels and pressure-sensitive element designs. When the internal pressure of the valve is too high and exceeds the set safety value, it will automatically open the pressure relief channel to release the excess pressure. For example, some use pressure relief valve discs controlled by springs that automatically open under high pressure to achieve pressure relief.
2.SAFETY FUNCTIONS
· Protecting the Valve Body: It avoids damage to components such as the valve body and valve seat caused by excessive pressure and prevents serious consequences such as valve body rupture caused by overpressure, thus extending the service life of the valve.
· Maintaining System Safety: It can timely release the abnormal high pressure in the high-pressure pipeline, ensuring that the pressure of the entire pipeline system is within a safe range, and avoiding dangerous situations such as system failures or even explosions caused by local overpressure.
Comparison Items | Anti-blowout Valve Stem Structure | Self-relieving Structure |
Action Objects | Mainly targeting the valve stem to prevent its accidental popping out. | Focusing on dealing with excessive internal pressure of the valve. |
Prevented Risks | Avoiding medium leakage and operational out-of-control caused by the valve stem popping out. | Preventing valve damage and system failures caused by overpressure. |
Triggering Mechanisms | Relying on mechanical constraints such as limiting devices to limit the displacement of the valve stem. | Through pressure-sensitive elements, automatically starting when the set pressure value is reached. |
Working States | Continuously ensuring the stability of the valve stem during the normal operation and operation process of the valve. | Usually in a standby state and only plays a role when the pressure is abnormal. |
In high-pressure pipelines, the anti-blowout valve stem and self-relieving structures of the DBB BALL VALVE ensure its safety performance from different aspects. The two complement each other and jointly safeguard the stable and safe operation of the high-pressure pipeline system. During the selection and use processes, attention should be focused on their designs and performance.
