Questions regarding the fixed supports of expansion joints.
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As shown in the diagram, how are fixed supports installed at the elbow? Are there standard practices or catalogs?
The latest version of the HG/T21629-2021 standard for chemical industry support and hanger catalogs – when using fixed supports at elbows, a single type of support may not meet your requirements; in such cases, combined supports can be considered, with multiple standard supports used together to achieve the desired function
May I ask, are there any other methods available if standard pipe racks are not used? For example, can an elbow be cast into concrete?
How can an elbow be poured into concrete? This is only possible when the pipe passes through a concrete wall. Concrete walls or piers serve as support points, as long as they can withstand horizontal thrust.
The purpose of the main fixing frame is to withstand the force from the blind plate. The standards state that constrained expansion joints can eliminate blind plate forces, eliminating the need for a main fixing frame. May I ask whether, for a general-purpose single-axis expansion joint, it is possible to eliminate the force exerted by the balance blind plate through the shipping tie rod without removing it, thus avoiding the need for a main fixing frame?
It’s a limit device that can move up and down; it doesn’t affect the axial displacement of the shorter leg, but it restricts the axial displacement of the longer leg. The shorter leg cannot be too long, otherwise the compensator will fail. If you lack experience, I don’t recommend doing it. If you seal it off with cement or weld the entire support in place, then it’s done