Is it okay for the pipe support to extend outside the bracket?

This post was last edited by touchskyyy on 2019-5-13 15:52. Are you referring to the sliding pipe supports on the pipe rack? When designing the axial length of sliding pipe supports, it is necessary to take into account the displacement of the pipelines under thermal conditions; as a result, the pipe supports are designed to be relatively long. When there is thermal expansion, even if the pipeline equipped with a sliding pipe support moves axially, the support remains in place on the pipe rack and does not fall off. In fact, if it falls, it’s because the length of the pipe supports was not taken into account during design, or the pipe supports in other areas were not secured properly, allowing the expansion of the pipes in other sections to push them forward.

As long as gravity is not lost, there should be no problem. Additionally, check the size of the support pipe brackets and the pipes themselves; if the pipes are too large and there are no reinforcement plates on the beam flanges, it can be quite dangerous.

As long as it can provide support, there’s no problem

No problem; you can take a look at the catalog for 97R412 – it shows clearly that whether a support plate or PTFE pad is used, the area covered by it won’t be very large.

As long as it can ensure that the pipe rack is installed stably on the pipe gallery and can perform its intended function, there’s no problem. However. Weren’t your pipe tunnels and pipe racks designed together by the design institute? Why is this happening? If the pipe tunnels are too small, is their load-bearing capacity sufficient?

It is acceptable for the center line to be on the pipe rack, but in the case of pipe supports that can slide, or those with a large sliding range, the design should include extended pipe supports to prevent the pipes from slipping out of the rack

Supports should be added under such beams

For sliding pipe supports in thermal pipelines, there is a design in which, when the pipeline is under heat, the center line of the pipe support coincides with the center of the support. During pipeline installation, the eccentricity between the support and the pipe support corresponds to the amount of thermal expansion. Such pipe supports are generally designed to be longer; some designs provide pipe supports of different lengths depending on the required degree of slippage. However, this approach presents many problems in practical installation – the intention is to save some material, but it actually leads to various issues such as reduced efficiency due to the need to manufacture components of different sizes, and an increased risk of incorrect installation. It is recommended to use standardized, longer sliding pipe supports, and attention should also be paid to strengthening the structure at the locations where such supports are installed

What you mean is pre-stretching during pipeline installation, or what’s known as cold tightening