1, Product Introduction
Clad tubesheets is mainly for heat exchangers and pressure vessels, by using explosion bonded method, The top layer and base layer can become together, and explosion method makes the strength strong between 2 or more kinds of different metals.
1. Shell and tube heat exchanger
Shell and tube heat exchanger, also known as tube and tube heat exchanger. It is a partition type heat exchanger with the wall of the tube bundle enclosed in the shell as the heat transfer surface. This type of heat exchanger has a simple structure, reliable operation, and can be made of various structural materials (mainly metal materials). It can be used at high temperatures and pressures and is currently the most widely used type.
2. Fixed tube plate heat exchanger
The two end tube plates of the fixed tube plate are integrated with the shell. Therefore, it has the advantages of simple structure and low cost, but it is difficult to clean and maintain the shell side. The fluid inside the shell must be a clean and non scaling material.
When the temperature difference between two fluids is large, thermal compensation should be considered. Weld a compensation ring at an appropriate location on the shell, and when the shell and tube bundle expand differently, the compensation ring will undergo elastic deformation to adapt to the different degrees of thermal expansion of the shell and tube bundle. This compensation method is simple, but it is not suitable for situations where the temperature difference between the two streams is too large (not greater than 70 ℃) and the fluid pressure in the shell side is too high.
3. Floating head heat exchanger
The floating head heat exchanger has one end of the tube plate that is not connected to the outer shell and can float freely along the axial direction. This structure not only completely eliminates the influence of thermal stress, but also allows the entire tube bundle to be extracted from the shell due to the flange connection between the fixed end tube plate and the shell, making it easy to clean and maintain. Therefore, floating head heat exchangers are widely used, but their structure is relatively complex and their cost is high.
4. U-shaped tube heat exchanger
The U-shaped tube heat exchanger is the only heat exchanger suitable for high temperature, high pressure, and high temperature difference. Each pipe is bent into a U-shape, and the inlet and outlet are installed on both sides of the same pipe plate. The head is divided into two chambers by a partition. In this way, each tube can freely expand and contract without being related to other tubes and shells. This type of heat exchanger has a simpler structure and lighter weight than the floating head type, but the tube side is not easy to clean and is only suitable for heat exchange with clean and non scaling fluids, such as high-pressure gases.
5. Packing box floating head heat exchanger
The packing box type floating head heat exchanger is a modified structure of the floating head heat exchanger, which moves the floating head originally placed inside the shell side to the outside and uses a packing box to prevent the leakage of the medium inside the shell side. The structural feature is that only one end of the tube plate is fixedly connected to the shell, and the other end is sealed with a stuffing box. The tube bundle can expand and contract freely without generating thermal stress caused by the temperature difference between the shell wall and the tube wall.
Titanium clad layer: SB265 GR1;GR2;GR7;GR12
Base layer: Stainless steel; Steel; Forging,etc.
Dimension:
Tube sheets thickness from 10mm to 500mm
DIA from 300mm to 4500mm.
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