In the safety protection system of air compressors, the rupture disc, as an important overpressure relief device, assumes the important responsibility of preventing equipment damage or safety accidents caused by system overpressure. Among them, reverse arch groove type bursting disc relies on its unique structural design and excellent performance, and has been widely used in air compressor systems.
Unlike traditional positive arch type or flat plate type bursting discs, reverse arch groove type bursting disc adopts a reverse arched disc structure. This structural design can make the force distribution more uniform when under pressure, and can effectively disperse the load caused by the system pressure. At the same time, the choice of rupture disc material is usually a high-strength alloy, which allows the rupture disc to have sufficient strength to withstand normal working pressure, but also has precise fracture properties, and can be reliably discharged during overpressure.
In terms of working principle, during the normal operation of the air compressor, the system pressure acts on the concave surface of the rupture disc, so that the bursting disc is under pressure. At this time, the reverse arch groove type bursting disc can use the mechanical properties of the arch structure to resist pressure and maintain a sealed state so that the compressed air will not leak. When the system overpressure occurs due to abnormal conditions, the pressure exceeds the designed burst pressure of the rupture disc, and the reverse arch structure will be unstable and flipped because it cannot withstand the pressure, and the original reverse arched rupture disc will instantly flip in the direction of the concave surface. During the flipping process, the prefabricated weakening groove will be accurately broken due to stress concentration, forming an unobstructed discharge channel, which quickly discharges the overpressure compressed air, reduces the system pressure, and prevents the equipment from being damaged due to overpressure.
The application of reverse arch groove type bursting disc in air compressors has great advantages. The fatigue resistance of the rupture disc is excellent. During the operation of air compressors, pressure fluctuations are a common phenomenon, especially the pressure pulsation of piston compressors is more obvious. The reverse arch groove type bursting disc's reverse arch structure can absorb the impact of pressure fluctuations through elastic deformation, and the design of the groove avoids excessive stress concentration, so that the rupture disc can withstand tens of thousands of pressure cycles without fatigue failure, reducing the risk of malfunction. There is no debris pollution from the rupture disc. Since the rupture disc is flipped and broken, the debris will be limited to the range of the weakening tank, and no splashing debris will be generated, avoiding clogging or damage to downstream pipelines, valves or other equipment, which is very important for the continuous and stable operation of the air compressor system. In addition, the applicable pressure range of rupture discs is wide. Whether it is a low-pressure micro-air compressor or a high-pressure industrial-grade compressor, reverse arch groove type bursting disc can adjust the arch height, thickness and groove depth parameters to meet the needs of different pressure levels.
In short, reverse arch groove type bursting disc has an irreplaceable safety guarantee role in the air compressor system, which can provide reliable safety support for the stable progress of industrial production.
