Why don’t reciprocating compressors have gearboxes
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Typical high-pressure feed pumps use a gearbox between the motor and the pump to increase speed. Why don’t reciprocating compressors have a gearbox to increase speed, but instead use a prime mover with an appropriate speed? What are the disadvantages of using a transmission in reciprocating compressors?
In my opinion, the connection between the crankshaft and the big end bearings of the connecting rods is lubricated by splashing; too low an engine speed can affect this lubrication
It’s mainly the load factor. When a reciprocating compressor starts up, the load is quite high. So theoretically, an acceleration/deceleration gearbox is possible.
They all start under no load; the current is at its highest at the moment of startup, as it has to overcome inertial forces, which is why the ammeters are pushed off their scales. Increase the load gradually after it is operating normally. Starting under load can cause severe damage to the equipment, potentially leading to equipment failures and casualties.
Yes. :handshake
I think there might be several reasons: 1. When analyzing pipeline vibration, the speed is fixed; changing the speed could lead to resonance. 2 Reducing the speed may result in excessive medium pulses, which do not meet the process requirements. 3 It has high inertia, and frequent changes in speed are not economical.
Where is there any scientifically proven evidence regarding economic viability and pipeline vibration issues?
The rotation speed of reciprocating compressors is generally around 300 RPM, and this can be achieved by using multi-stage motors. So why is it necessary to use a gear reducer?
We have used the transmission to change from high to low gear; the low-to-high variation is more commonly used in centrifuges and axial flow fans in commercial applications. There is no market for raising the low voltage of reciprocating machines: the cost is not justified