Issues regarding the closed loop of centrifugal compressors
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While reviewing some materials recently, I came across the topic of \"centrifugal compressors operating in a closed loop.\" I have a few questions for the experts out there: 1. What does it mean for a centrifugal compressor to operate in a closed loop? 2. What are the characteristics of the pipeline? 3. What issues should be noted when operating in a closed-loop mode?
Which exact area do you mean by the closed loop? Do you mean the oil system?
Reply to 1# ygxxgy: It refers to the flow of medium in a centrifugal compressor, which moves from the outlet back to the inlet, in a manner similar to backflow in a pump. It is a structural design adopted when the medium is not suitable for air defense, or when the subsequent stages suddenly no longer require the medium, in order to protect the compressor
Reply to 1# ygxxgy regarding pipeline characteristics. Manufacturers generally have already calculated these values; the resistance characteristics are specified, and it is necessary to ensure that these requirements are met during installation. Once installation is complete, the compressor parameters are adjusted during commissioning
Reply to 1# ygxxgy: In closed-loop operation, the load generally decreases. For process compressors in automatic mode, it is necessary to control the incoming pressure, as the compressor does not discharge any medium. To stop the operation of the displacer, it is necessary to direct the gas to the flare or vent, thereby opening the closed state