Connection of segmented cylinders in tower equipment
Thread Content
Due to their large weight, tower equipment has its cylinder divided into sections to facilitate processing and transportation. Segmented cylinders need to be connected together. When deciding whether to use flanges or welding for connecting these segmented cylinders, what factors need to be considered?
If the tower diameter is small, flange connections can be used to facilitate maintenance. If it is large, it can be welded on-site.
The segmentation of the flanges is usually indicated on the drawings; for towers with very large diameters, flanges are not used, and the components are assembled and welded directly. To understand the function of a flange, it is designed primarily for ease of installation and maintenance. 1. Small-diameter towers can use flanges, which facilitates installation, disassembly, and maintenance. 2. Large-diameter towers are not suitable for this purpose. Not to mention the difficulties in fabricating flanges and the high costs involved, even just the bolts used for fastening pose a significant problem. Therefore, when maintaining large-diameter towers, manholes are used frequently, along with maintenance platforms at different heights; these platforms are equipped with manholes, which facilitate the installation of internal components and packing, as well as make maintenance and repairs easier.
Small-diameter towers can use flanges to facilitate installation, disassembly, and maintenance; generally, DN
I agree with what was said on the 3rd floor, but it is also necessary to consider whether there is the capability for on-site welding; since some equipment requires heat treatment after welding, economic factors must also be taken into account
Generally, small diameters use flange connections.
For towers designed for easy transportation, flange connections are rarely used. It mainly involves welding, such as on-site welding. In the manufacturing plant, consideration must be given to the convenience of on-site assembly; first, attention should be paid to the ellipticity and flatness of the end surfaces of the various sections, followed by the amount of misalignment and the angle of the edges, as well as the straightness of each section. Only in this way can the standard requirements be met.
Generally, flanges are used for small diameters, while welded connections are used for large diameters and telescopic towers. The two small-diameter packing towers (DN500, 700) I designed for Luxi Chemical some time ago used flange connections, while the DN2800/2200 tower I designed for them last year employed a cone shell design
Another point is that flange connections are not suitable when there are too many segments; the number of flanges is generally…
Our factory also installs large-diameter towers in sections; after welding, heat treatment is applied to the welds. Attention must be paid to their verticality during alignment
I would like to ask where the issue of the flange logarithm being less than 5 occurs