Judgment of packing leakage in reciprocating compressors
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How to determine packing leakage in reciprocating compressors? Please share your suggestions
The most obvious sign is air leakage from the collection pipe, with vapor escaping; the temperature near the back of the collection pipe is higher. In cases of severe air leakage, the exhaust volume is insufficient
Thank you; this is exactly the problem that occurs with our company’s press
1. Severe leakage causes insufficient flow rate or a drop in inlet pressure. 2. In the case of moderate leakage, there is usually a flow meter available for checking.
The gas volume in the collection tube increases significantly, the temperature at the gas seal rises markedly, the exhaust pressure decreases, and the flow rate drops.
The flow rate is decreasing and the temperature is rising; if possible, use a leak detector to check for leaks
Open the side cover and you can test it by hand; there is also an exhaust pipe below the stuffing box that allows for detecting the amount of leakage. Speaking of safety issues, a large amount of leakage from the stuffing box, combined with oxygen and high temperatures, can lead to combustion; it is essential to check the parallelism of the piston rod to prevent high temperatures from occurring.
Filler leakage does not necessarily lead to a decrease in flow rate! If it is inbound traffic, it causes an increase in traffic volume ； If it is outbound traffic, it causes a decrease in traffic. Primarily, it is determined by the temperature of the filler gas leakage collection pipe or the filler temperature; an auxiliary method for judgment is the filler return water temperature, and additionally, it can be determined by the cylinder compression ratio and exhaust temperature. It can’t be generalized; many reasons have been ruled out...
As pressure drops, flow rate decreases, motor current increases, and the load also increases.
For general process gases (especially those that are flammable and explosive), a collection pipeline is provided at the packing seal, and information such as pressure and flow rate can be determined through this pipeline. Furthermore, when the packing seal leaks, the temperature here will change; additionally, the temperature at the cooling water outlet also rises when the flow rate remains constant
Lubricant is emulsifying in the crankcase! Lubricant is emulsifying in the crankcase! Lubricant is emulsifying in the crankcase!
This issue is relatively simple: check the vent line in the middle chamber at the stuffing box. Feel it with your hand; if it’s hot, it indicates that there is a leak into that chamber. I’m not sure whether your stuffing box has nitrogen cushioning; if it does, you can increase the nitrogen pressure slightly to prevent the leaking gas from escaping.