It is reported that due to the high cost of titanium extraction, so the price is more expensive, although it has a light weight, high strength characteristics, but also in the use of manufacturing costs is more important in one of the factors affecting the design of the product, how to reduce the use of titanium has become more important design requirements.
Heat exchanger, embedded tube plate is an important component, the existing tube plate and flange titanium heat exchanger has the following shortcomings.
First, due to titanium and other materials can not be welded characteristics, flange and tube plate need titanium, therefore, a large increase in the use of titanium.
Second, due to the titanium thickness of the design pressure has a greater impact on the design pressure, therefore, when the design pressure increases, the flange and tube thickness will increase simultaneously.
For this reason, researchers have studied a different design pressure, at the same time can be used in the ring ring flange structure of the embedded tube titanium heat exchanger.
The structure of the three-layer composite tube and plate titanium heat exchanger includes tube plate, fixed-pitch tube, tie rod, nut, anti-loosening lugs, support plate, U-shaped heat exchanger tube, U-shaped heat exchanger tube for a number of U-shaped heat exchanger tube overlap together through the tube plate, U-shaped heat exchanger tube through the anti-loosening lugs fixed in the support plate, anti-loosening lugs for a number of pieces of anti-loosening lugs are set up at equal distances between anti-loosening lugs fixed-pitch tube is set up, the tie rod is connected to the tube plate, the other end is attached to the tube plate, the other end is connected to the tube plate. One end of the tie rod is connected to the tube plate, and the other end passes through the fixed distance tube and the anti-loosening lugs and is pressed by the nut, and the tube plate is made of three-layer composite material. The anti-loosening lugs are five pieces. The U-shape heat exchanger tube and the tube plate are connected by a fixed connection, and the buffer sleeve between the U-shape heat exchanger tube and the tube plate is made of steel, and the U-shape heat exchanger tube is welded to the tube plate after passing through the tube plate. TA9+Q345R+TA9 is used for each layer of the tube plate.
As the U-shaped heat exchanger tube through the tube plate after welding with the tube plate, and in the U-shaped heat exchanger tube and tube plate buffer set between the U-shaped heat exchanger tube and tube plate, U-shaped heat exchanger tube through the tube plate and then welded, and U-shaped heat exchanger tube according to the material and the titanium layer welded to the tube plate, U-shaped heat exchanger tube and tube plate buffer between the tube plate and tube plate welded to the intermediate layer of the plate, under the same intensity of the thickness of the tube plate needed to be the thinner, reducing the cost and can be used with other materials pipeline Welding with other material piping is also possible.
The new titanium heat exchanger is simple in structure, small in appearance and easy to use.
