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Regarding failures in the HydroCOM system, how should the new hydrogen generator be operated?

2020-04-10View Original

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Problem description: I would appreciate it if someone who is knowledgeable could explain the operation of HydroCOM. Question one is that the HydroCOM system does not have automatic control based on the system’s pressure head; it operates independently. In the event of a failure in the HydroCOM system, will the load on the new hydrogen generator be 100%? Since our facility has primary and secondary pressure difference interlocks, can we adjust the situation by shutting down Reactor 1/2 and Reactor 3/4? Will this cause the system to shut down due to the interlocks? The interlock value is 5.04 for level 1 and 8.66 for level 2. Question 2: If automatic mode is selected, how is it operated?
Reply #22020-04-10
A reminder from the design institute: Helbig’s variable air volume control system is not linked to the compressor’s discharge pressure. It simply pushes open the suction valve at a set time when the compressor reaches a certain angle. Therefore, if the stepless air volume control system fails completely, it will either keep the intake valve open (operating condition 0, though this is only possible), or it will cease to function (operating condition 100%). Of course, it’s also possible that a certain actuator fails, which can lead to a mismatch in the pressures between stages; this can cause the pressure ratio between stages to be reallocated, with the greatest impact on the last stage. Of course, high exhaust pressure at the outlet rarely triggers a interlock; it is usually the high outlet temperature that causes such an interlock. When the hydrocom fails, flow regulation can only be addressed by implementing backflow.
Reply #32020-04-11
Hello! You replied that you understood, but there is still one question. As you said, \"it either stops working (under 100% operating conditions)\.\" In such a situation, what should be done? Should it be adjusted by using one reverse and one forward operation, or two reverses and two forward operations? My compressor has interlocks: there is a pressure difference interlock between the primary outlet and the primary inlet, and another interlock between the secondary inlet and the secondary outlet. So, if something goes wrong, the machine might shut down due to these interlocks. One more question: do you know how it operates when this is set to automatic based on system pressure?

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