Traditional high pressure flange is the use of sealing gaskets(oval gaskets, octagonal gaskets,lens gaskets, ect.) plastic deformation to achieve sealing effect,connected to the pipe end, so that the pipe is connected to the pipe parts, the flange has holes, double head bolts to make two flanges closely connected. High-pressure flange sealing mode: the core of high-pressure self-tightening flange is unique, metal to metal new seal, that is, rely on the elastic deformation of the sealing lip of the sealing ring (T-arm) to form a seal, belongs to the hard seal; Then the combination of sleeve section, clip sleeve and seal ring formed a strong rigid body, so that the strength of the connecting part is far greater than the strength of the pipeline base material itself. In the compression, the rib and lip respectively play the role of strength and sealing, not only can be tightly sealed, but also can strengthen the pipeline, greatly strengthen the overall strength of the connection part.
1.What is the sealing form of high-pressure flange
The key to the sealing of high-pressure flange is the old metal-to-metal seal, that is, the seal is formed by the elastic deformation of the sealing lip (T-shaped arm) of the sealing ring, and then the combination of the sleeve stiffener and the skeleton is used to combine the sealing ring and the old metal-to-metal seal. The strength of the pipe base material is far greater than the strength of the pipe base material itself. Various pipe flange standards and flange sealing surface forms can be used to meet various user and engineering needs
Of course, different high-pressure flange connection forms, parts and equipment required are determined according to specific conditions. For example, flange gaskets are also different according to different pressure levels, from low-pressure asbestos gasket, high-pressure asbestos gasket to metal gasket. It is necessary to see the medium and working conditions of high-pressure flange
2. What are the features of high-pressure flange?
High-pressure flange is mainly used in pipeline installation. High-pressure flange connection is an important connection method for pipeline construction. The connection between pipes plays an important role and value. Do you know the features of high-pressure flange?
1. The sealing principle belongs to plastic deformation.
2. Connected by bolts
3. The bolt shall bear tensile force, temperature difference stress and many external stresses such as bending moment and torque.
4. Large volume, heavy weight, difficult installation and positioning
5. The sealing performance is unstable, especially in harsh conditions (high temperature, high pressure, highly toxic medium), which is easy to leak, causing serious consequences
Post time: Jul-22-2022
