Discuss the precautions for shutting down reciprocating compressors

Hahahahaha, switch off the device? It means the switching between two or more units, right? Lol If that’s the case, let’s explain it based on that meaning. First, make use of the check valves at the outlet of each unit. In other words, before sending in air, the pressure is controlled to be slightly lower than the system pressure using a circulation valve (or vent valve), after which the outlet valve of the delivery unit can be fully opened. What remains is to use the pressure or flow rate of the system as a reference point during the switching process: gradually close the circulation valve (or vent valve) of the unit that is being shut down, and gradually open the circulation valve (or vent valve) of the unit that is taking over, until the pressure in the unit that is being shut down drops. Once that happens, the outlet valve and inlet valve of that unit are closed, and the unit is shut down. It is worth noting that when it is detected that the check valve is leaking air back, the unit’s outlet valve must be used for control. For reference.

After the cutting process is completed, if you want to shut down the unit, do not turn off the power; instead, let it run under no load for 5 to 10 minutes. The main purpose is to prevent malfunctions in the operating machine, as stopping the other machine would result in long restart times that could affect the process system.

The best effect of the cutting machine is to minimize the impact on the process system. To achieve precise cutting, do not open the outlet valve yet; observe the outlet pressure at the last stage of the unit. Once the pressures of the two units are roughly equal, the two teams should operate simultaneously – one team should close the outlet valve of the unit in operation, while the other team opens the outlet valve of the standby unit. Be careful to use gentle movements, and ensure that both teams coordinate their actions