In the field of industrial production, the safe operation of pressure vessels, pipelines and other equipment is very important. As a key overpressure protection device, bursting disc plays an important role in ensuring the safety of equipment and personnel. This article will introduce bursting disc in detail for you from several important aspects.
The main function of bursting disc is overpressure relief. When the pressure inside the equipment or pipeline rises due to abnormal conditions such as uncontrolled chemical reaction, wrong valve closing, excessive heating, etc. and reaches the preset burst pressure of bursting disc, bursting disc will burst instantly in accordance with the design method, forming a smooth discharge channel. At this time, the internal high-pressure medium will be quickly discharged through the ruptured bursting disc, thereby preventing the pressure in the equipment from continuing to increase, and preventing the equipment from exploding, deformation and other serious accidents due to overpressure. Compared with other overpressure protection devices such as safety valves, the outstanding characteristics of bursting disc are rapid action, no leakage, and a wide range of applications, especially for those occasions where trace leakage of the medium is not allowed, the medium is highly corrosive, the working conditions are harsh, or the pressure needs to be released quickly.
The working efficiency of bursting disc is related to its own structure and materials. Bursting disc is usually composed of a body, a gripper and other components. The main body is an important element to realize pressure relief. The common types are flat plate type, positive arch type, reverse arch type, etc. Bursting discs of different structures are suitable for different working conditions. For example, the anti-arch type will flip and break due to instability under pressure. It has the characteristics of high burst pressure accuracy and good fatigue resistance. It is suitable for occasions where the stability of the burst pressure is required to be high. The positive arch type is stretched and broken from the vault under pressure. The structure is simple and the manufacturing cost is low. The role of the gripper is to firmly install the body on the discharge port of the equipment or pipeline, while ensuring that the bursting disc can break smoothly during blasting, and to ensure the sealing performance during normal operation to prevent medium leakage.
The choice of material is also very important for bursting disc. The material of the bursting disc body needs to have sufficient strength, toughness and corrosion resistance to adapt to different media and working conditions. Commonly used materials include stainless steel, nickel-based alloys, titanium and titanium alloys. For special media, such as highly corrosive acid and alkali solutions, or high-temperature and low-temperature environments, it is necessary to choose corresponding corrosion-resistant, high-temperature-resistant or low-temperature-resistant materials. The material of the gripper usually needs to be matched with the body and the medium to ensure the sealing and service life of the overall device.
Bursting disc is also widely used in the industrial field, covering chemical, petroleum, pharmaceutical, food, metallurgy, electric power and other industries. Bursting disc can quickly and reliably achieve pressure relief when the equipment is overpressure, and it is an important line of defense to ensure the safety of equipment and personnel in industrial production.
