Introducing the locations where vibration is likely to occur in tube and tube heat exchangers
Vibration is prone to occur in the following areas of tube and tube heat exchangers:
1,UShape tube: due toUThe natural vibration frequency of the pipe is low, so it is easy to vibrate.
2. Inlet and outlet area: High flow velocity is usually generated locally in the inlet and outlet area, and this high flow velocity will cause vibration.
3, tube sheet area:
Tube and tube heat exchangerThe unsupported tube span near the tubesheet is often larger than the span in the baffle area, resulting in a lower natural frequency of the tube. The inlet and outlet are connected to this area, and the possible local high flow velocities combined with the low natural frequencies make this an area to consider for vibration prevention.
4. Baffle area: The unsupported span of the pipe located at the baffle cutout is twice the baffle spacing. A large unsupported span will reduce the natural frequency of the pipe, making it easy to vibrate.
52. Obstacle area: Objects that hinder the flow, such as tie rods, anti-collision baffles, etc., can produce local high flow rates, which will cause vibrations near the obstacles in the tube heat exchanger.
