Through the technical measurement of the mechanical vibration state of 8 air compressors of 40m3 and 11 air compressors of 100m3 at that time, combined with the vibration measurement and evaluation standards of reciprocating piston compressors, according to the actual situation of the site, some of the measured air is measured. The press is technically evaluated, and two air compressors with characteristics are introduced. Air compressor diagnostic maintenance example one a, b is the vibration comparison of the second phase 4100m3 air compressor before and after maintenance. When measured in July 2005, the vibration intensity of the air compressor 2 measuring point is within the standard range, and the measurement is repeated after one quarter of operation. The vibration value of the measuring point is seriously exceeded, and the vibration peak reaches 2641 mm/s. The standard is 18mm/s, which indicates that there is a serious abnormal impact at the cross slide of the high pressure cylinder, and it is likely that the gap is out of tolerance. When checking and repairing, the gap between the measured slider and the slide is 036mm (standard allowable value is 021030mm). After the crosshead was replaced, the vibration situation improved significantly. Air compressor diagnostic maintenance example 2 test 40m3 air compressor 7 machine, found that the PK value is higher (see 5a), é‚ check the processing of the 7 machine level, the data detected again after the repair is completed b. Through the above test, make Make clear judgments, arrange repairs in time, eliminate hidden troubles, and achieved good results. Solution to Compressor Vibration The vibration elimination method of the compressor body will not cause the vibration of the machine. The inertia force and torque of the compressor will cause vibration of the machine. If certain measures are not taken to limit it, it will cause a series of problems, so it is necessary to Start with. The vibration should be absorbed by the foundation and the base soil. The ideal condition is that the foundation has sufficient strength and rigidity. The base surface, the horn and the foundation surface have sufficient contact area, good contact stiffness and the amplitude of the ground bolt vibration. Within the allowable range, the unit and the foundation together form a system that responds very little to the disturbance and ensures the normal operation of the compressor. It is required that the natural frequency of the foundation and the unit differs from the frequency of the disturbance by more than 25% to avoid resonance. Choose a basic air compressor or a large foundation, vibration isolation foundation, etc. Control the base amplitude (or vibration speed). If a combined foundation is used, 23 units of the same type of compressor are used to set the same base plate, which can reduce the amplitude and reduce the wear of the machine bearings. The air compressor suction and exhaust ports are equipped with flexible joints to isolate the vibration between the air compressor and the pipe. The vibration elimination method of the pipeline controls the pulsation pressure unevenness, and the fluctuation of the gas flow pulsation pressure in the pipeline is controlled within the allowable range, which is the most effective method. During pipeline construction, it is required to reduce the turning, avoid sharp turns, avoid the space joint, and the arc radius of the elbow is as large as possible to reduce the excitation force field and the force amplitude, thereby reducing the mechanical vibration amplitude. To prevent mechanical resonance of the pipeline, the natural frequency calculation of the pipeline structure should be carried out during design. The natural frequency should be 3 times or more of the excitation frequency as much as possible. However, for more complicated pipeline systems, the distribution of natural frequency values ​​is very dense and it is difficult to make the pipeline. The system avoids resonance at a certain stage, but since the amplitude of the high-order resonance is small and the amplitude of the fundamental frequency resonance is the largest, the resonance of the low-frequency order should be avoided. Support stiffness is an important factor affecting the natural frequency of the pipe mechanism. The stronger the support stiffness, the greater the influence of the change of support stiffness on the natural frequency of the system. At the same time, the natural frequency value of the pipe is smaller. Therefore, when designing the support, the stress is required to be strong and the quality is small; and the pipeline and the support should strive to use rigid joints instead of adding gaskets, and the distance between the pipeline and the support should not be too far, and should have its own foundation. It can't be connected to the air compressor, and the elevation should be consistent and not too high. The end of the fault diagnosis of the reciprocating piston compressor not only involves the use of instruments and equipment, but also the analyst's understanding of the structure, motion and dynamic characteristics of the mechanical equipment itself, and the understanding of the failure mechanism. Through continuous practice improvement, vibration analysis will be applied more effectively, optimal management will be realized, equipment predictive maintenance will be carried out, and equipment management level will be improved. 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