Talking about the service life and economic operation of air compressors Wensunhao Zibo City Yellow Water Supply Authority, Zibo 255000 Zibo City Yellow Water Supply Plant currently uses 1.5 for the production of Liuzhou Air Compressor General Plant.

In order to ensure that this air compressor can meet the gas requirements of the water valve of the water supply valve of the water supply filter, the water supply valve of the water supply valve, the sewage valve of the sewage valve, etc., in the entire gas supply system, in addition to the supplied gas The water separator and the 0 stomach series regenerative air dryer, commonly known as the drying tower, have added a gas storage tank of about 3 cubic meters, and adopted a series of practical and feasible certificates for the gas produced.

After the air compressor was purchased and installed, it was idle for 10 years. In 2001, only the peripheral accessories were overhauled and put into use. In the meantime, there have been many questions, such as the suction and exhaust valve chip and spring break, the valve plate is not tightly sealed, the cooling water circuit is blocked, the air compressor parts are damaged, and the pipeline leaks, etc., but they are all properly solve.

Due to the normal operation of the pneumatic valve 5 used in the filter tank, it directly affects the safety of the production and operation of the filter tank. In severe cases, it not only affects the normal water supply, but also brings great economic losses. Therefore, how to prolong the service life of air compressors, improve the reliability, safety and economy of unit operation, and adopt effective energy-saving and consumption-reducing measures, we must solve the service life of air compressors. With the pulsating load, it is inevitable that wear, deformation and cracks will occur, causing the parts to break or even fail. Therefore, in order to prolong the service life of the air compressor, it is necessary to reduce the number of air compressors on and off as much as possible, and reduce the failure rate.

According to the statistics of some manufacturers using air compressors, the cause of the failure of the air compressor belongs to the design 30, and the improper operation is accounted for as improper maintenance. It belongs to the wear and aging. It is not difficult to see the above statistics, although the air compressor is invalid. The reason is that it has attracted a lot of attention.

Service life and initial failure period. It is caused by the quality of the design and manufacture of the product. For example, in the initial stage of the air compressor of our factory, due to the excessive assembly clearance, there was a noise caused by the loose installation of the exhaust valve, and then the chip and the spring broke. After that, the maintenance personnel adjusted the valve installation in time, and increased the valve body height by adding an aluminum gasket, and replaced the chip spring to solve the problem. In general, the initial failure period is characterized by a high probability of failure, but a stable working state over time.

Accidental failure period. During this period, the equipment has entered a stable working state, and the fault only happened by chance. The characteristic of this period is that the air compressor runs stably, the failure rate is the lowest, and the equipment is in the best working stage. The length of this period determines the effective service life of the air compressor.

Depletion of the failure period. The failure rate is high due to aging fatigue wear and other wear and tear on the components of the air compressor. Failures during this period will become more frequent over time until they are scrapped.

Ways to improve the service life of air compressors From the above analysis, we can see the life cycle of the air compressor and the law of failure. The way to improve the service life of the air compressor is as follows to shorten the initial failure period and prolong the accidental failure period. Early failures are discovered as early as possible and resolved as early as possible so that the operation of new equipment reaches or approaches the level of accidental failure as soon as possible.

Experience exchange guarantees the time of the accidental failure period.

The consumable parts that occur during the accidental failure period, such as the valve spring piston ring, should be replaced in time. Otherwise, the broken valve piece easily damages the sealing surface of the valve body, causing the entire valve body to be scrapped.

Extend the accidental preventive maintenance as much as possible, replace the aging parts in time, and eliminate the factors affecting the air compressor performance parameters in advance.

The failure of the air compressor can be summarized as the failure caused by the wear of the components; the change of the air compressor with the clearance causes the output parameters to be affected; it is the overheating of the unit caused by the failure of the cooling system.

The corresponding measures for the above faults are that after the air compressor is used for a long time, the valve spring piston ring and the like are seriously worn, the air valve is not tight, the air leakage is easy to occur, the exhaust efficiency is low, the piston and the cylinder clearance exceed the allowable value, and the string is prone to occur. Gas phenomenon, need to replace the corresponding accessories in time 5 to adjust the gap. Ensure the reliability of the cooling system operation, make the inlet water temperature and drainage temperature of the cooling water meet the air compressor. The air volume of the two air compressors of our factory is 1.513 blood, the rated exhaust pressure is 0.7MPa, and the switch for 60 valves is used. gas. Due to the uneven use of gas in production, sometimes the instantaneous gas consumption is large. 5 The gas supply pressure fluctuates greatly. Therefore, our factory uses the gas supply tank 5 to balance the fluctuation between gas production and gas consumption, and to ensure that the supply pressure 2 operation mode reduces the final discharge pressure during continuous gas supply. From the perspective of reliability economy and safety of air compressor operation, the final exhaust pressure of the air compressor should be limited.

Under different working pressures, the air compressor of our factory has a fixed relationship between the current value and the exhaust pressure. As the exhaust pressure means the power consumption increases. Moreover, the increase in the heat load of the cooler by the exhaust pressure, which also affects the life of the valve chip and the spring, exacerbates the wear of the various components of the air compressor. The exhaust gas temperature should not exceed 1801; therefore, the final exhaust pressure should be reduced as much as possible while satisfying the production gas.

Reduce boot time. Obtaining more air volume with as little start-up time as possible to achieve a linear upward trend in the relationship between pressure and time when the economy is inflated to the gas tank, but the gas tank is deflated each time due to the sealing structure of the gas tank. The residual pressure must be left, so when the final pressure of the gas tank is 15 hours of the rated working pressure of the gas tank, the air compressor is turned on to inflate the gas tank until the pressure reaches 0.64. This phase is in optimal operation.

The maintenance and repair of the six air compressors is a powerful measure to ensure the efficient operation of the air compressor. Maintenance includes predictive maintenance, regular maintenance, and fault repair.

Predictive maintenance, also called proactive maintenance, that is, weekly inspection, is a predictive maintenance through diagnostic prediction techniques. It mainly includes whether the work of each component is normal; whether the lubricant is sufficient or deteriorated, whether the waterway is unblocked, and whether the pressure index is normal.

Regular maintenance, regular maintenance, washing and replacing filter elements, adding lubricating oil, checking cooling water circuit, etc.; replacing valve chip and spring, checking the tightening condition of piston pin connecting rod bolt, replacing lubricating oil, etc.; repairing, running 2000 hours later Replace the piston ring, adjust the matching clearance, verify the pressure safety valve, etc.; disassemble the air compressor, replace all worn parts, conduct a comprehensive inspection of the auxiliary equipment, and carry out comprehensive anti-corrosion maintenance.

Failure repairs are carried out irregularly and repairs occur at any time.

On the other hand, the air conditioning tank pipelines and air valves of the auxiliary equipment of the air compressors should be strengthened and maintained, and air leakage inspections are often carried out. Otherwise, the operation time of the air compressors will be prolonged, and the air compressors will also be affected. Service life.

Sun Hao, an engineer, Zibo City Water Diversion Administration, is mainly engaged in the Yellow River water treatment process and the study of adding chemicals according to water quality changes.

Work Unit Zibo City Yellow Water Supply Bureau Communication Address Room 1002, Area 6, 52nd Floor, Sports Plaza, Zhangdian District, Zibo City, Shandong Province

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