【Q&A Question 213】November 19, 2016
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【Q&A Question 213】November 19, 2016: What are the reasons for an increase in current in a reciprocating compressor motor? A reference ** will be shown after responding; scoring is achieved by answering the key points. (1) Increased load ； (2) Gas with liquid entrainment ； (3) Cylinder collision or scoring ； (4) Motor failure. Summary post of Q&A from 2016 (updated as of November~~~~) http://bbs.hcbbs.com/thread-1597792-1-1.html Seeking sponsors for the “2016 Haichuan Top 10 Members Selection Contest” http://bbs.hcbbs.com/thread-1628108-1-1.html (Source: Haichuan Chemicals Forum)
⑴The compressor is under excessive load； ⑵Low grid voltage ； ⑶The ammeter is malfunctioning ； ⑷There is a problem with the excitation thyristor ； ⑸Impact of lightning.
There is too much oil coolant in the system. The friction on the piston rod is too high. The power supply is missing a phase or the three-phase voltage is unbalanced. There is air in the oil cooling system. Mechanical failure of the compressor, or excessive or insufficient power supply voltage. There is too much or too little refrigerant oil inside the compressor. Internal fault in the compressor coil winding. The suction and exhaust efficiency of the compressor decreases. The compressor motor coil is damp, causing inter-turn short circuits. The compressor power does not match the oil cooling system. The capacitor capacity for compressor operation is either too large or too small. The oil cooling system is clogged with dirt, water, or oil, and the valves are not fully open.
(1) Increased load； (2) Gas with liquid entrainment ； (3) Cylinder collision or scoring ； (4) Motor failure.
1. The pressure ratio at the inlet and outlet increases； 2. Increased load ； 3. Severe wear of piston rings, resulting in air leakage ； 4. Air valve leakage ；
Increased load, component variations, bearing damage, large return line opening
System pressure increases; the compressor packing is too tight