Is it necessary to install a valve between the burst disc on the autoclave and the vessel body?
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Is it necessary to add a valve between the burst disc on the autoclave and the vessel body? The drawings provided by the design institute show valves, but they are not present in the assembly drawings given by the manufacturer! Do you think a high-pressure valve should be installed?
Valves cannot be installed between the safety accessory and the equipment being protected, unless the valve is locked in the open position.
This valve must be a normally open valve, so that it can be replaced easily when the burst disc is damaged without the need to shut down the system. It is advisable to use a three-way valve, as it ensures a normally open state and facilitates replacement.
Previously, it was not allowed according to the rules, but it seems that new rules now permit it. Adding a three-way valve is the best option; if a stop valve is used, it must be in an open position and sealed with lead. For the convenience of system maintenance and safety reasons, it is recommended to install a three-way valve.
Based on the lessons learned from others and personal experience, it is certainly possible to add a valve, but there is one condition: the valve must remain in an open position； From the perspective of maintenance and safety, I personally believe it is advisable to install a three-way high-pressure valve, with each of the two outlets connected to a burst disc ；
There are four ways to connect the rupture disc to the tank body: Rules for Periodic Inspection of Pressure Vessels 1. When the rupture disc is used as a pressure relief device alone, check whether the shut-off valve between the rupture disc and the container is in the fully open position, and whether the seal is intact ； 2. Blowout disks and safety valves are used in series; if the blowout disk is installed on the inlet side of the safety valve. Blowout discs and safety valves are used in series; if the blowout disc is installed on the outlet side of the safety valve. When a burst disc and a safety valve are used in parallel, check whether the shut-off valve installed between the burst disc and the container is in the fully open position and whether the seal is intact.
We still installed it now, for the reason that once the burst disc breaks, it prevents the contents inside the reactor from leaking out and also makes it easier for operators to replace it!
In the view of many users, this valve still needs to be installed; the key is to ensure that it remains in its normal open state and to prevent accidental operation. The locking mechanism of the valve can achieve this goal, whereas ordinary sealants and chain locks cannot.
It can be added; once it’s ensured to remain in an always-on state, simply remove the handwheel and hang it aside. That’s all.
A long time ago (it’s unknown exactly how long), it was not allowed to install valves, even before the safety valves; now this is permitted. These changes were made based on production experience. However, it is essential that these valves remain in an open position, so as to facilitate maintenance after an explosion or when the safety valve activates, reduce material losses, and ensure continuous production. Times are advancing, and technology is improving! ! ! !
Previously, it was not allowed to install valves, even in front of safety valves; now it is permitted to do so. This is mainly related to the issue of emissions of toxic and harmful gases, as valves can help prevent environmental accidents.
The standard designs nowadays can all be added. The explanations upstairs are already quite thorough. Standardized elements are also continuously updated through the development of design practices.
If installed, it is necessary to ensure that the release diameter matches that of the blast disc, and that it remains in an open position at all times
From a safety perspective, valves should not be installed, but to facilitate the maintenance, calibration, and replacement of safety valves, these valves have to be added.
Under normal conditions, the valve remains open; however, it needs to be closed when replacing the burst disc, so a valve should be installed
This also depends on the circumstances; if toxic or harmful gases are being released from the furnace, it is absolutely necessary to add it. There’s no doubt about that.
It is generally added in factories, and it is in an open state
It can be added, but the Dharma door must always remain open!!!!!
It can be added, but make sure the valve is in an open position at all times! To ensure continuous production, a tee valve can be installed, with a burst disc device on each side as a backup. The damaged side can be shut down for replacement, allowing the spare side to be used immediately, thus ensuring that driving can continue normally during repairs.
It’s best not to add it to avoid problems; if added, make sure the valve remains in the open position!
Calculation of the design pressure for rupture discs in chemical process pressure vessels and an introduction to their types: http://bbs.hcbbs.com/thread-1633472-1-1.html (Source: Haichuan Network)