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Externally pressure corrugated expansion joint , axial external pressure type corrugated expansion joint,
Valve well installation external pressure corrugated expansion joint,
axial external pressure type corrugated expansion joint,
which is composed of bellows, outer pipe and end ring and other components that bear external pressure,
and is only used to absorb the axial displacement and cannot withstand the pressure thrust of the bellows.
When the required axial displacement is large, and the use of internal pressure axial expansion joint
is limited due to the problem of column instability, the external pressure expansion joint can be considered,
which is characterized by the absence of column instability problem and the large amount of axial compensation.
When the expansion joint is working, the bellows is under tension, not compression.
Axial external pressure metal bellows expansion joint
It is widely used in the connection of thermal pipe network, smelting, power plant, industrial equipment manufacturing
and engineering pipeline system, and effectively ensures the performance characteristics of large compensation capacity,
high pressure, corrosion resistance, fatigue resistance and wear resistance required by pipelines.
Performance characteristics of axial external pressure bellows expansion joint: The axial external pressure bellows expansion joint
is composed of an inner cylinder, a bellows, an outer cylinder and ancillary components. The bellows is subjected to external pressure,
has good closure and bending resistance, and can absorb large displacement amounts. It can be made into single, duplex,
two-way and other forms. The expansion joint of the axial external pressure bellows mainly absorbs the axial displacement,
and has the advantages of large compensation, good thermal insulation performance, and residual medium can be removed.
