Metal Compensator for Gas Pipeline

Compensator is also known as expansion joint, or bellows expansion joint. The
utility model is composed of a bellows (an elastic element) constituting the
main body of the bellows and accessories such as an end pipe, a bracket, a
flange, a conduit, etc. The utility model belongs to a compensation element.
The effective expansion deformation of bellows is used to absorb the size
changes of pipelines, conduits and containers caused by thermal expansion and
cold contraction, or to compensate the axial, transverse and angular
displacements of pipelines, conduits and containers. It can also be used for
noise reduction and vibration reduction. It is widely used in modern industry.
In heating, in order to prevent pipeline deformation or damage caused by
thermal elongation or thermal stress during heating, compensators need to be
installed on the pipeline to compensate the thermal elongation of the pipeline,
thereby reducing the stress of the pipe wall and the force acting on the valve
or support structure.
Advantages of the Metal compensator:
The utility model has the advantages of compact structure, less space
occupation and direct burying; the disadvantage is that the manufacturing is
difficult, the pressure resistance is low, and the compensation ability is
small. The compensation capacity is related to the outer dimensions, wall
thickness and diameter of the corrugated tube: the higher the pressure, the
thicker the wall, the smaller the diameter, the greater the rigidity, and the
smaller the compensation capacity. Waveform compensator is generally used for
applications where the nominal pressure is ≤1.0MPa and the nominal diameter is
≥150mm. It can also be used for large diameter pipes with normal pressure and
low pressure. It can be used in boiler flue gas ducts up to DN4000mm.

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