How to connect heat exchange tube sheet and tube?

Steel shell and tube heat exchangers are widely used in chemical production. The connection between tubes and tubesheet is a very important structure and link in the heat exchanger, whether it is a fixed tubesheet or a floating tubesheet or a U-shaped tubesheet heat exchanger.

The connection joint type of heat exchanger tubesheet and tube can be divided into expansion joint, welding, expansion joint and welding according to different service conditions of heat exchanger.

Tube sheet and tube expansion

1. Traditional expansion process

2. Explosion expansion process

3. Hydraulic tube expansion process

Tube sheet and tube welding

1. Strength welding

2. Seal welding

Welding and expansion of tube sheet and tube

1. Expansion before welding

2. Welding after expansion

Since the heat exchange tube and tube sheet are the only barriers between the tube side and shell side of the heat exchanger, the quality of the connection joint between the heat exchange tube and tube sheet is the most important factor for the failure of the shell and tube heat exchanger.

Tube Sheet Connection