What Are The Best Ways To Prevent Damage To The Cooler To Reduce

What are the best ways to prevent damage to the cooler to reduce

There are many sources of cooler vibration, and one or more of them may be the source of harmful vibrations. Pulsations caused by reciprocating machinery (details of chemical vibrating screens) are one source of excitation; certain vibrations coming through supporting members or connecting pipes are another source of excitation. As the frequency of these types of excitation is determined by the system, it is relatively predictable. The mechanism of hydrodynamic excitation, on the other hand, is more difficult to predict.

Fluid flow excitations can be divided into two main types: namely, those excited by flow parallel to the tube axis (known as longitudinal flow) and those excited by flow perpendicular to the tube axis (known as transverse flow I). Transverse flow can cause large amplitudes under normal circumstances and is very harmful to the tubes of the cooler.

1) Reduce the shell line speed, when the flow cannot be changed, can increase the tube center distance or increase the shell diameter.

2) to improve the inherent frequency of the tube, an effective way is to shorten the maximum span of the tube without support or change the tube, increase the wall thickness, but the effect is not as significant as method 1).

3) Change the form of the folding plate or change the use of folding rods, but also to meet the premise of heat transfer and pressure drop to change the tube arrangement.

4) When the receiver vibration can increase the diameter of the receiver.

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