The waste alkaline oxidation air compressor tile burning reason analysis and processing

The waste alkaline oxidation air compressor tile burning reason analysis and handling, 2020 - 02 - 12 presidential abstract: from the perspective of the safe and stable operation of equipment, the causes of bearing vibration on the waste alkaline oxidation air compressor equipment analysis judgment, eliminate the hidden trouble of equipment operation, ensure the unit is stable for a long period of time travel. Key words: waste alkaline oxidation air compressor; Busbar loss; Analysis 0 foreword judgment and processing waste alkaline oxidation air compressor is the shenhua ningxia coal group limited liability company olefin binary separation plant of key equipment, operation conditions directly affect the stable operation of separation device, related to the separation plant production of safe and stable operation, a direct impact on the normal operation of the factory. 1 summary of equipment waste alkaline oxidation air compressor ( C - 16010个) And its specifications for 4 m6. 5 - 26. 2/37. 7, type into fixed water-cooled symmetrical balance, four columns 4 oil free reciprocating piston, waste alkaline oxidation air compressor is mainly composed of compressor, motor, coupling, and lubricating oil and control union station and other auxiliary equipment, specific parameters as shown in the table. 2 the problem of large compressor turbine front bearing vibration analysis and take measures to ( 1) Fault phenomenon: on February 20, 2017 to C - 16010 a waste alkaline oxidation air compressor for empty load test. 15:06 start for the first time, the main check the lubricating oil import and export temperature and pressure, cooling water, import and export pipeline temperature and pressure, the bearing shell temperature, the temperature of motor bearing, double amplitude values of various parameters, such as vibration, after 20 minutes of downtime, open at the top of the fuselage gland, check the temperature of the connecting rod big head doll, both in 32 ~ 39 ℃, the parties, when confirmed or cover for the second start work; However the second start, the oil temperature is normal, normal, cooling water temperature to normal vibration index; Very operator ( Manufacturing plants, separation workshop) C - found at the scene 16010 a level 4 had soot emitted connecting rod, immediately ask board bearing shell case temperature, fuck reply within 4, 5 watts temperature rises, factory workers live viewing compressor operation, operation report within 5 watts temperature rise to 80 degrees or so, temperature rising too fast, 17:29 rose to 100 degrees when emergency stop at the scene. Then from the # 5 watts of bearing shell temperature curve as shown in the figure 1 parking inspection found that # 4 and # 5 watts badly burned as shown in the attached figure 2. （ 3) Cause analysis: about waste alkali oxidation air compressor four m6. 5 ( Y20） , when the empty load running, burn research thrust ring inside the fuselage, the location in the spindle tungsten gold loss loss in watts. According to the situation of description, analysis (large amount of axial channeling of judgment for the motor Measured values of 0 before installation. 80毫米) More than axial compressor to allow clearance value of 0. 445 mm, and thrust ring with the crank shaft wall friction research, a dramatic increase in the friction heat, cause there is, the main bearing temperature rise, the lubricating oil film was damaged, the crankshaft journal and bearing friction surface, no oil film separation, will be more frequent contact, the bumps on the micro movement under the action of each other in crankshaft journal and bearing shell will produce fatigue crack, and oil production after infiltration crack hydraulic function, accelerate the crack propagation, cause the alloy particle quickly fall off from the bearing surface. Direct contact friction surface and lead to bearing shell temperature, bearing alloy layer of fatigue strength is reduced, further accelerate the production of the bearing alloy crack and fall off. Bearing alloy loss will lead to the crankshaft journal and bearing clearance increases, oil pressure drop and a sound, a short period of time bearing shell was burned. （ 4) Troubleshooting: this phenomenon also technical exchanges, with the electric motor shaft. There are large amount of factors, one is thrust bearing cover installation clearance; Second, bearing clearance, the axial channeling move. Axial channeling in initial debugging, motor positioning in axial compressor see xu values it is possible to avoid loss of locating ring, based on the current installed, may be increased through the gasket to narrow down the motor installation clearance of axial deviation, can be installed to solve burn research issues. On February 26, 2017 in motor side with a 0. 5 mm gasket, adjust motor running quantity to zero. 30 mm, satisfy the positioning of the compressor shaft tile and crankshaft axial clearance value is 0. 227 - 0. The requirement of 445 mm, after follow-up of commissioning, operation parameters to normal. Source: science and wealth, 24, 2017