Development and application of composite titanium heat exchanger
December 08, 2021
Because the extraction cost of titanium is high, so the price is more expensive, although it has the characteristics of light weight and high strength, but in use is also one of the most important factors affecting the manufacturing cost, so in product design, how to reduce the use of titanium material has become a more important design requirements.
In heat exchangers, the embedded tube plate is an important component. The existing titanium heat exchangers with tube plate and flange have the following shortcomings:
1. Due to the characteristics of titanium and other materials can not be welded, flange and tube plate need titanium, therefore, a large increase in the use of titanium.
2. As the thickness of titanium material has a great influence on the design pressure, when the design pressure increases, the thickness of flange and tubesheet will increase synchronously.
For this reason, researchers have developed a kind of titanium heat exchanger which can adapt to different design pressures and can use the lining ring looper flange structure.
The structure of the three-layer composite tube plate titanium heat exchanger including tube plate and spacer pipe, rod, nut, locking ears, support plate, the u-shaped heat exchange tube, u-shaped tubes dogan, dogan u-shaped overlap together through the heat exchange tube, tube sheet, u-shaped tubes by locking ears fixed on the support plate, locking for the ear piece, multichip locking the ear spacing Settings, such as locking is a set between the ears Distance tube, one end of the pull rod is connected to the tube plate, the other end passes through the distance tube, anti-loose support ear after pressing through the nut, the tube plate is made of three layers of composite material. There are five anti-loose lugs. There is a fixed connection between the anti-loose lug and the support plate. Buffer sleeve is arranged between u-shaped heat exchange tube and tube plate. The buffer sleeve between u-shaped heat exchange tube and tube plate is made of steel. The U-shaped heat exchange tube is welded to the tubesheet after passing through it. Each layer of tube plate is TA9+Q345R+TA9.
Due to U after through the tube plate heat exchange tube and tube sheet welding, and the u-shaped heat exchange tube and tube plate setting buffer between sets, u-shaped heat exchange tube of the reentry after through the tube sheet welding, and the u-shaped heat exchange tube according to material and tube sheet welding titanium layer, the u-shaped heat exchange tube and tube plate intermediate buffer between shell and tube sheet welding, tube plate thickness under the same intensity need the thinner, reduce the cost, And can be welded with other material pipelines at will.
The new titanium heat exchanger has the advantages of simple structure, compact shape and convenient operation.
