Understanding of the working load, installation load, and zero-tension in hot and cold conditions for spring supports and hangers
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This spring support has never been used, but it can always be seen, and its exact function has never been understood. All of the definitions mentioned above can be found online, but they’re still hard to understand. For example, regarding the installation load, some people say it refers to the load of the spring at the time of manufacture, while others say it’s the load when there is no deformation. My question is: is the spring compressed or stretched already at the time of manufacture? How can it then have a load? There’s also hot-zero hanging and cold-zero hanging; I can only understand what cold-zero and hot-zero mean, but I’ve never been able to figure out what zero hanging means. Could some expert explain these things in an easy-to-understand way, rather than just quoting definitions?
Here is my personal understanding: Load is simply load – there’s nothing much to say about it. \"Hang 0\" refers to the height; since it’s a spring-mounted structure, temperature has an impact on it, and the height when carrying pipes at high temperatures differs from that at normal temperatures
Is the spring compressed or stretched already at the time of manufacture, meaning it is under stress upon leaving the factory, rather than being shipped in its natural state without any stress? How should height be understood in the context of hanging zeros?
In my understanding, it involves adjusting the height so that each bracket experiences the same vertical displacement when subjected to pressure from the pipes, thereby avoiding uneven stress distribution
For example, there is a long section of pipe, and the pipe supports in the middle have different spacing: some are 6 meters apart, some 7 meters, and some 8 meters. As a result, the load at each point is different; therefore, it’s necessary to adjust the alignment so that the loads are distributed evenly. My understanding is that this involves adjusting the height of the spring brackets. As for adjusting the alignment in the cold state or the hot state, I think it means adjusting it according to the respective condition