Heat Exchanger Technology Q&A II

1. Q: Why must the gaskets on both sides of the Tube Sheet be made of the same material?

A: Because the Flange fastening bolts on both sides of the tube sheet are the same one, the specific pressure applied to the gaskets on both sides of the tube sheet is the same. If the gaskets on both sides are made of different materials, it is inevitable that one side of the gasket will not have enough pressure to cause seal failure or the other side of the gasket will have too much pressure to cause seal failure.

2. Q: Why does the cooling water heat exchanger produce scale?

A: Scale is formed by the crystallization of dissolved salts in water and attached to the tube wall of the heat exchanger. It is characterized by being dense and hard, firmly attached, and difficult to remove. A large number of suspended particles in water can become crystal seeds. Other impurity ions, bacteria, rough metal surfaces, etc. have a strong catalytic effect on the crystallization process, which greatly reduces the supersaturation required for crystallization. Therefore, the cooling water heat exchanger It is easy to produce limescale.

3. Q: What are the main components of the Floating Head Heat Exchanger?

A: The main components are: tube bundle, baffle, anti-shock plate, tie rod, spacer tube, shell, tube box, tube sheet, inlet flange, outlet flange, floating tube sheet, floating head flange, floating head cover, Floating head hook ring, floating head gasket, outer head cover flange, outer head cover side flange, outer head cover, outer head cover gasket, air vent, drain port, pipe box flange, pipe box side flange, pipe box gasket, Tube box side gasket, fixed saddle, movable saddle.

4. Q: What are the main components of the fixed tube-Plate Heat Exchanger?

A: Tube bundle, baffle, tie rod, spacer tube, shell, tube box (top cover), tube sheet, inlet flange, outlet flange, tube box flange, tube box gasket, fixed Saddles, movable saddles, lug bearings, expansion joint.

5. Q: What are the main components of the U-tube heat exchanger?

A: U-type tube bundle, baffle plate, anti-shock plate (inner guide tube), tie rod, spacer tube, shell, tube box, tube sheet, inlet flange, outlet flange, tube box method flange, pipe box side flange, pipe box gasket, pipe box side gasket, fixed saddle, movable saddle.

6. Q: What are the main components of the casing heat exchanger?

A: Inner tube, outer tube, return elbow.

7. Q: What are the main components of the immersion heat exchanger?

A: Inlet pipe, outlet pipe, collecting pipe, Coil pipe, cooling water tank.

8. Q: What are the main components of the spray heat exchanger?

A: Tube bundles, fans, water nozzles, drain pipes, and feed pumps.