Where to use hydroformed stainless steel bellows

Where to use hydroformed stainless steel bellows

▸Precision bellows for volume compensators

▸Pressure and temperature sensors; height measurement in aerospace

▸Flexible connectors (expansion joints); absorption of vibration and thermal expansion

▸Metal bellows couplings; torsional (rotational) moments can be compensated

▸Bellows valves (gate, safety or check valves); hermetic stem seals while compensating for the relative motion between the valve plate and the housing caused by the opening and closing of the valve system

 

Ideas for Selecting Expansion Joints

Expansion joints have rectangle-shaped areas as well as waveform with similar shape. A solitary expansion joint in the pipeline bears two-dimensional displacement. The pipe comprising 2 expansion joints can bear three-dimensional displacement. Metal expansion joints could be classified right into full-height expansion joints and also half-height expansion joints.

1. After the user pick the proper expansion joint based on the thermal displacement of the piping system, they have to offer information regarding the tool from the pipe, style stress of the duct, the greatest temperature throughout procedure, the general dimension of sections of the duct, the chosen waveform and the quantity of the waveform to be able to make and also make structure of expansion joints.

2. The maximum allowed expansion of each waveform

Full-height type: △ α = ± 24 mm Half-height: △ α = ± 12 mm.

3. In order to decrease the variety of the waveform, we need to consider the cold-drawn process for expansion joints.

4. The ash board: For pipelines with much less dirt, the ash board doesn%u2019t demand to be made use of for flue pipes with much dirt, the ash board should be embraced.

5. Expansion joints are suitable for pipes whose cross-sectional locations are less than 4.6 square meters and also one side of the overall measurement of the air and also flue gas duct which is less than 1.5 m but higher than 0.6 mm. Standard full-height expansion joints can be put on all air as well as flue gas ducts.