The structure of steam pipe expansion joint mainly consists of the following parts:
Bellows: The corrugated pipe is the core component of the steam expansion joint, which is made of stainless steel sheet and is shaped as a flexible pipe with corrugations. The function of corrugated pipe is to pull the expansion and contraction of the expansion joint and absorb the thermal expansion and contraction deformation caused by the pipeline system, which plays an important role in engineering application.
protective sleeve: A protective sleeve is a component used to protect the bellows from mechanical damage and corrosion, usually made of a layer of iron sheet or rubber. Its function is to protect the bellows from the external environment.
End cap: The end cap is a component that holds the bellows in the housing, usually made of cast or forged steel. Its role is used to secure the connection of the bellows and the housing while withstanding the impact of the pressure and media in the pipeline system.
shell: The housing is the outer shell of the steam expansion joint, usually made of steel plate or pressure vessel material. During use, the housing needs to withstand the pressure of the piping system and the impact of the medium.
coupling: A coupling is a socket connection component of a steam expansion joint, usually consisting of a flange and a flange cover. Its function is to connect the steam expansion joint with the pipeline system, and transmit the stress of the pipeline to the bellows, thus alleviating the pressure deformation.
In addition, the expansion joint of steam pipe may also include some other components, such as flange, gasket, limiting device, support and hanger, etc. Among them, the flange is an important component connecting the expansion joint and the pipeline system, and bears the pressure and torque in the pipeline system; The gasket is used to protect the sealing surface between the flange and the bellows and prevent leakage; The limiting device and the support and hanger are used to limit the moving range of the expansion joint and fix the position of the expansion joint.
The structural design of steam pipeline expansion joint can be adjusted and optimized according to specific use conditions and requirements to meet different pipeline system requirements.