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(1) into the valve spool break, so that the valve is not open (2) there is water in the cylinder (3) rocker pin off or tapered pin cut off (4) gas cylinder piston ring damage (5) cylinder wear gap (6) valve plate, poor contact with the seat (7) insufficient steam pressure (8) in the middle of the piston rod, causing the valve closed (9) discharge valve plate mounted anti-export to death treatment:
(1) Replace the valve or valve plug (2) Open the drain valve to drain the water in the cylinder (3) Install the rocker pin and replace the cone pin (4) Replace the cylinder piston ring (5) Replace the cylinder or piston ring ) Scraping the valve plate and seat (7) Adjust the steam pressure (8) Adjust the position of the piston rod (9) The exhaust valve is installed correctly 2. Symptom:
(1) inlet temperature is too high to produce vaporization, or the surface is too low suction gas (2) the inlet valve is not open or small to open (3) piston nut loose (4) due to the import valve gasket blowing so that the import and export is connected (5) cylinder liner wear, piston ring failure treatment:
(1) to reduce the inlet temperature, to ensure a certain level or to adjust the reciprocation frequency (2) to open the inlet valve to a certain degree of opening or adjusting the reciprocation (3) tighten the piston nut (4) to replace the inlet valve gasket Sleeve or piston ring 3. Symptom: a sound or vibration Cause:
(1) Piston stroke is too large or vaporization is evacuated. (2) The piston nut or piston rod nut is loose. (3) The cylinder liner is loose. (4) ) Crosshead frame connector loose at processing methods:
(1) adjust the piston stroke and the number of reciprocation (2) and tighten the piston nut and piston rod, nut (3) and tighten the cylinder sleeve screws (4) to remove debris in the cylinder, replace the valve ) Repair or replace the crosshead 4. Symptom: gland leak, leak reasons:
(1) Rod wear or surface is not smooth (2) Filler damage (3) Packing gland is not tight or insufficient filler Handling:
(1) Replacing the piston rod (2) Replacing the packing (3) Filling or tightening the gland 5. Symptom: Cylinder piston rod overheating Cause:
(1) Orifice check valve failure (2) Insufficient lubrication (3) Packing too tight Processing methods:
(1) replace the check valve (2) add enough lubricants (3) loose packing gland 6. Symptom: pressure instability reasons:
(1) lax valve or spring elastic uneven (2) piston ring is not flexible in the tank Method:
(1) Grinding valve or replacement spring (2) Piston ring and groove adjustment 7. Symptom: lack of flow Cause:
(1) lax valve (2) Piston ring and cylinder liner gap is too large (3) stroke is too small (4) stroke is too short Treatment:
(1) grind or replace the valve, adjust the spring (2) replace the piston ring or cylinder liner (3) adjust the stroke number (4) adjust the stroke
Roots pump troubleshooting common failure
1. Symptom: Pumping motion reasons: