Analysis and Maintenance of Application Technology Lubricating Airless Compressor Faults Tan Zhigang Guangxi Laibin Smelting Plant, Guangxi Laibin 54610 excerpted for the high air compressor failure rate of this unit air compressor equipment, and the air compressor maintenance is difficult. Based on my own practice and experience in the actual work, the author first introduced the working principle of the B series 3 air compressors. Finally, the fault diagnosis skills and maintenance methods of the air compressors were analyzed from different angles for reference.
Road construction word air compressor; fault; judgment; maintenance air compressor as a kind of complex structure of the equipment, under normal circumstances, rarely failure, can occur, due to the complexity of its structure, increase the difficulty of processing, reduce The speed of repair. Because of its work, and the structure is more complicated, it is difficult for the general maintenance personnel to judge the cause of the failure, thus affecting the normal production to a different extent.
1 Air compressor failure Asked that the feed of the filter press is based on the air compressor as the power source, part of the pneumatic automatic valve opening and mineral material delivery is also powered by the air compressor. More air compressors are used in the workshop process. Due to the large number of air compressors, the faults of each station are different, and the equipment is often shut down due to small questions. Due to the failure of the air compressor, the production of the workshop was affected, and in the serious case, the entire process was interrupted, resulting in great economic losses. Therefore, if you can accurately determine the cause of the failure, and quickly repair it becomes the key to maintenance.
2 West 30 series air compressor working principle 2.12 boundary 310 series oil-free air compressor It is composed of compressor main body cooling system adjustment system lubrication system safety valve gas storage tank motor and other control equipment. The working 3 is electric, the coupling directly drives the crankshaft to drive the connecting rod crosshead and the piston rod to make the piston reciprocate in the compression cylinder, and complete the process of suction compression elimination. The cubic meter single-acting model moves downward in the stage piston, the air passes through the muffler filter, and the suction valve enters the cylinder. When the 1 cylinder moves to the bottom dead center, the suction process is completed. When the piston moves upward, the air in the cylinder is compressed. When the gas is compressed to the stage exhaust pressure, the stage exhaust valve opens, the compressed air is discharged, and after cooling and separating by the stage cooling separator, it enters the stage cylinder and enters the stage cylinder. The gas repeating process is again compressed to the rated pressure and then discharged through the stage exhaust valve. After cooling and separating by the stage cooling separator, it is discharged to the lower gas storage tank for storage. The working mode of the 3910 cubic meter double-acting machine is the same as that of the single-acting model. .
2.2 How to ensure the normal operation of the air compressor to make the compressor work normally. After the installation and maintenance, the necessary test run must be carried out and the indicators should meet the following requirements to clean the inside of the machine, then add the specified grade of lubricant to check the oil level. Whether it meets the requirements; 3 gambles the combination and fastening of each tear; 3 water pipelines open the shut-off valve of the main inlet pipe, and check whether the flow of each branch pipe is unimpeded; 4 correct the pressure, check the pressure and pressure installation Whether the situation is normal; 5 observe and judge whether the sports organization is flexible. Turn the flywheel by hand to make the compressor turn around. If there is any jam or bump, the 5 image should be found and eliminated. Oil pressure refers to the oil pressure not less than 16 cubits 3; 2 when the compressor is running, the sound is normal, there should be no impact noise; 3 check whether the air pressure and pressure work normally.
3 Judgment and maintenance of air compressor failures Through the practical experience of my air compressor maintenance work, combined with theory and practice, I summarized the following fault judgment techniques and maintenance methods of air compressors. There are mainly fault phenomenon level exhaust pressure, abnormal level, high exhaust pressure, and low level 2 exhaust pressure. Judging whether the skill level exhaust valve is leaking or damaged; the Class 3 suction and exhaust valve is leaking or damaged. Maintenance method Grinding or replacing the stage intake valve; grinding or replacing the stage suction valve 0 failure phenomenon level exhaust pressure is low. Judge the skill level exhaust valve may have serious air leaks or damage repair methods to grind or replace the stage intake valve. The phenomenon of oil pressure is reduced. Judging skill oil spring safety valve spring damage, so that the oil from the oil chestnut back to the fuselage, so that the pressure is reduced; 2 the fuselage oil surface is low, the oil pump can not suck oil; 3 oil suction pipe leaks; 4 oil, filter, plug . Maintenance method Replace the spring; 3Inject the lubricating oil of the specified grade, increase the oil level to check the oil pipe joint and the pipe body for leaks; 4Remove the oil filter to clean it.
The phenomenon of exhaustion is significantly reduced or suddenly decreased. Judgment skill The Piston Ring is improperly clamped in the ring groove and loses air tightness; 3 piston ring breaks or breaks; 3 gas valve leaks. Repair method to remove the repair; 3 replace the parts; 3 adjust or repair the gas valve. The fault phenomenon is that the exhaust gas is not pure oil. Judging the skill to hang the oil ring to lose the oil effect repair method to remove the repair or replace the parts. Symptom Six pistons come into contact with or collide with the cylinder. It is judged that the support ring has worn too much and lost support; 3 the piston ring and the crosshead or the piston rod and the piston are loosely connected. Maintenance method. Replace or adjust; 2 adjust and tighten. Symptom Seven safety valve relief valve and load regulator work or are stuck. Judging the rust or dirt caused by the technique is not working; the spring force is too large. Maintenance method to eliminate rust and grinding sealing surface, and apply oil on the sealing surface; 5 adjusted to meet the requirements. Symptom The exhaust temperature is too high. Judgment skill gas valve has air leakage; 2 piston ring damage or poor quality, causing the two ends of the cylinder to collide with each other.
Repair method Grind the valve seat and the valve sealing surface, or replace the valve with the new valve 2 or replace the piston. Fault phenomenon nine discharge failure. Judging the trick dirt into the drain valve, blocking the exhaust hole; 2 the dirt caught the drain valve float; 3 the drain valve component is damaged. Maintenance method Clean the drain valve to remove dirt; 2 Clean the filter to improve cleanliness 3 Replace the drain valve. Fault phenomenon + packing leaking is serious. Judging the technique, the filler is severely worn and deformed, and the airtightness is lost; 2 the spring tightening force is too loose and the piston rod is not tightly attached. Repair method 1 Replace the seal with a new one or replace it with a new one. Fault phenomenon + bearing bush temperature is too high. Judging the gap between the bearing bush and the shaft is too small; 2 the viscosity of the lubricating oil is wrong, the oil is dirty or loses function; 3 the assembly is poor, the contact surface is not good; 4 the bearing is too loose or too tight. The maintenance method is adjusted to the appropriate clearance; 2 replace the new oil; 3 re-calibrate after inspection; 4 tighten to the appropriate. Fault phenomenon + safety valve leakage. Judging the skill spring is tightening or the elastic force disappears; there is dirt impurity between the valve plug and the valve seat; 3 the sealing surface of the valve plug and the valve seat is not tight. Repair method to adjust or replace the new spring; 2 purge cleaning; 3 adjust or repair the sealing surface. Fault phenomenon + the compressor has abnormal sound 1; judgment skill between the cylinder and the piston falls into the hard object; 3 piston rod and Shiyu head loose connection; 3 link size head bearing and shaft radial clearance is too large; 4 suction The exhaust valve is loosely installed, and the gas shock has a sound; the 5 gas valve collides with the piston. Maintenance method to stop and take out the hard object; 3 tighten the nut; 3 check the gap to replace the bearing; 4 tighten the nut on the gas valve cover; 5 adjust the upper and lower dead center gap. Symptoms Ten cooling water is discharged with blisters. Judging skill: The cooling pipe and the tube sheet are not expanded; 2 the gasket between the cylinder head and the cylinder is damaged. Repair method to re-expand the tube; 2 replace the new mat.
4 The reason for the failure of the problem solved the technical difficulty of air compressor maintenance and received good results. Today's era is an era of efficiency and value. How to better deal with the failure of air compressors, improve the speed of fault handling and maintenance quality, and gain valuable time for the production of enterprises, reducing production costs, waiting for each of us. Maintenance line personnel continue to practice the summary.
Li Gui. Internal combustion engines and air compressors. Geological Publishing House, 1994.
Wang Keqin. Air compressor and automatic control. China Railway Publishing House, 1991.
CYPR locomotive piston ring is focusing on high-end locomotive market. The key OEM customer is GE Transportation.
The piston ring material includes cast iron (ductile cast iron, high alloy cast iron and alloy cast iron) and steel (stainless steel, carbon steel, alloy steel), the advanced coating, e.g. CCC, CDC, SFC are widely used. CYPR high performance piston ring has a good wear resistance, high (thermal) scuff resistance, long lifetime and superior fuel economy.
Locomotive Piston Ring,Piston Rings For Locomotive,Piston Ring For Diesel Locomotive,Engine Piston Ring For Locomotive
ASIMCO Shuanghuan Piston Ring (Yizheng) Co., Ltd. , http://www.cypr-pistonring.com