It's still the accumulator issue
Thread Content
After reading the label on the accumulator, I went back to the device and took a closer look; there were a few things I didn’t understand. On the oil station of the turbine-driven compressor (hydrogen circulation pump), there is an accumulator (large) in the lubricating oil circuit, and there is also an accumulator (smaller) in the control oil circuit. The lubrication system of the motor-driven compressor (hydrogen circulation pump) does not have an accumulator, while the lubrication system of the high-speed centrifugal pump has an accumulator; there is also an accumulator at the outlet of the high-pressure reciprocating pump. What is the difference in the functions of these accumulators?
Normally, the moment of switching between the main and auxiliary oil pumps results in too low oil pressure; the accumulator serves to maintain a stable oil pressure at such times. The size of the accumulator, its pressure, and the amount of oil are related to each other.
On the oil station of the turbine-driven compressor (hydrogen circulation pump), there is an accumulator (of large size) in the lubricating oil pipeline, primarily to maintain a stable oil pressure; generally, both the driving end and the driven end have specific pressure requirements within certain ranges. The control oil circuit also has an accumulator (smaller). It is mainly intended to provide a stable oil pressure. Motor-driven compressors (hydrogen circulation pumps) do not have accumulators in their lubrication systems. Motor-driven compressors are usually reciprocating types, with the crankshaft serving as the component responsible for lubrication; there is no need for extremely precise pressure levels – a value above a certain fixed threshold is sufficient. There is an accumulator in the lubrication circuit of the high-speed centrifugal pump, and another accumulator is present at the outlet of the high-pressure reciprocating pump. In the case of a circulation machine, if it is at the inlet or outlet of the high-pressure reciprocating pump, the purpose is to stabilize pressure fluctuations and reduce vibration. If there are any mistakes, please point them out!
On the oil station of the turbine-driven compressor (hydrogen circulation pump), there is an accumulator (of large size) in the lubricating oil pipeline, primarily used to store a portion of the lubricating oil under pressure. It can be called an accumulator. The control oil circuit also has an accumulator (smaller). It is mainly intended to provide a stable oil pressure. It can be called a buffer; there is an accumulator at the outlet of the high-pressure reciprocating pump. It also stabilizes export pressure. It can be called a buffer; the accumulator in the high-speed pump oil circuit also stores some lubricating oil to ensure that the bearings are not damaged during power loss and deceleration.
Generally, the lubricating oil of a turbine unit passes through an oil pump, an oil cooler, and a filter before being divided into two parts. Along the way is the control oil circuit, which is primarily used to serve the turbine emergency shutdown valve and the speed control system; an accumulator is installed there to provide a stable oil pressure for the control oil circuit【at a relatively low level】. The other circuit is primarily used to supply oil to the bearings of turbines and other related equipment. It features a high-level oil tank, which can also be referred to as an accumulator; its main function is to provide temporary lubrication for the bearings during engine idling in case of power outages, loss of lubricating oil pressure, or other emergency situations, thereby protecting those bearings. --------I’m a beginner too; I’m not sure if the original poster is satisfied
The function of the accumulators is basically the same; only the pressure levels differ…