Regarding the support of pressure vessels
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Dear experts: I am currently working on a system design that involves a horizontal pressure vessel supported by dual saddle supports. While designing the support structure for this equipment, I found that the pipes exert excessive stress on the vessel’s connections; it is no longer possible to adjust the pipes (the options for size adjustment are limited). Now I am considering changing the support mechanism to a sliding support system – that is, installing a device with rollers under the saddles to allow the equipment to move in the horizontal direction, thereby reducing the stress. Is there any standard for such sliding supports? Urgent! ! ! Thank you all! ! !
The stress on the interface is too high. From a equipment perspective, it’s possible to thicken the connecting pipes or add supports, etc. Why consider the supports first? Even if supports are taken into account, the connecting pipes still need to be considered. Horizontal containers generally have inlet and outlet ports at the top and bottom of the cylinder – are sliding supports useful in such cases? If installation is necessary, could two sliding saddles be used? But that is only to account for thermal expansion; it cannot meet the requirement of frequent movement
The standards mention a structure of rollers installed at the bottom of the saddle, but only briefly, without specifying the exact design. This should be something that designers take into consideration.
Still strengthen it, just a local reinforcement.
It’s a rather complex issue; ask the colleagues at the design institute.
Sliding supports are generally used only to address thermal stress issues; in simple terms, these stresses occur in the horizontal direction. The stresses at the inlets and outlets arise from the normal use of the equipment, and they exist in multiple directions; moreover, they affect both the joints and the cylinder body. Therefore, changing the supports alone should not be sufficient to resolve these stress problems. It is recommended to reinforce the takeover area and the support areas
This post was last edited by tian*anglu on 2010-4-3 01:42. I’m sorry for not explaining it clearly; that device is a tank lying horizontally, with the inlets and outlets located at each end of the tank. There is only one safety valve on the device, with no other pipes connected to it. The pipes connecting to this device exert a huge lateral force on it, and the temperature of those pipes is too high, so it’s no longer possible to rely on the pipes to dissipate that force. Is there really no way left to use sliding bearings in this situation?
Are the imports and exports on the head? Is the excessive nozzle stress caused by thermal displacement? Rolling supports can’t reduce the thermal displacement of pipes, right? Consider installing expansion joints on the pipeline; if the amount of displacement is small, bends can be added to the pipeline to absorb that displacement.