【Q&A Question 099】2016.07.28
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【Q&A Question 099】July 28, 2016: What are the reasons for overheating of the piston rod in reciprocating machines? The answer key will be available after responding; scoring is based on addressing the key points. 1. Misalignment occurs during the assembly of the piston rod and the stuffing box. 2. The clearance between the piston rod and the stuffing box is too small. 3. Dry friction is caused by dirt or insufficient lubricating oil for the piston rod and filler. 4. There are impurities in the stuffing box. 5. The sealing ring in the stuffing box is stuck and cannot move freely. 6. The sealing ring in the stuffing box is installed incorrectly. 7. During the assembly of the stuffing box, an inclination occurs with the piston rod, causing it to rub against the metal discs in the packing during operation and generate heat.
This post was last edited by fy214152 on 2016-7-28 at 11:56: 1. Misalignment occurs during the assembly of the piston rod and the stuffing box. 2. The clearance between the piston rod and the stuffing box is too small. 3. Dry friction is caused by dirt or insufficient lubricating oil for the piston rod and filler. 4. There are impurities in the stuffing box. 5. The sealing ring in the stuffing box is stuck and cannot move freely. 6. The sealing ring in the stuffing box is installed incorrectly. 7. During the assembly of the stuffing box, an inclination occurs with the piston rod, causing it to rub against the metal discs in the packing during operation and generate heat. Option 3 is more likely
1. The filler needs to be replaced; the internal working medium is leaking； 2. Insufficient cooling water in the filler box or water supply interrupted ； 3. The oil injector has stopped working
Poor lubrication, excessive load, overly tight sealing.
1. The clearance between the piston rod and the filler is too small. 2. Deflection occurs during the assembly of the piston rod and the packing. 3. The surface of the piston rod is rough. 4. Dry friction is caused by dirt in the lubricant for the piston rod and packing, or by insufficient lubricant. 5. Impurities are mixed in the gas within the filler and in the oil. 6. The metal disc seal in the stuffing box cannot be fixed in place and cannot move freely. 7. The stuffing box equipped with a cooling device does not cool properly.
1. Misalignment occurs during the assembly of the piston rod and the stuffing box. 2. The clearance between the piston rod and the stuffing box is too small. 3. Dry friction is caused by dirt or insufficient lubricating oil for the piston rod and filler. 4. There are impurities in the stuffing box. 5. The sealing ring in the stuffing box is stuck and cannot move freely. 6. The sealing ring in the stuffing box is installed incorrectly. 7. During the assembly of the stuffing box, an inclination occurs with respect to the piston rod, causing the piston rod to rub against the metal discs in the packing during operation and generate heat
The filler is too tight, resulting in poor cooling and high intake air temperature