(Hunan Xiangtan Power Generation Co., Ltd., Xiangtan 411202) The ball mill of Xiangtan Power Generation Co., Ltd. 300,000 kW thermal power generating unit is a steel ball mill produced by Beijing Electric Power Machinery Factory. Its gear diameter is large and the load is heavy, and the lubricant performance is very demanding. After the operation, the asphalt type open gear grease produced by a certain factory was used. After use, it was found that the gear had wear marks, and it was quite difficult to repair and clean. In June 1998, it switched to SH2402 heavy-duty open gear grease (referred to as SH2402 grease) recommended by Sinopec Group Chongqing Yiping Advanced Lubricant Company (referred to as Yiping Company). After more than one year of use, the equipment works well. The results show that the SH2402 grease can fully meet the lubrication requirements of the ball mill gears of our factory.
1 Ball mill big gear technical parameters Ball mill model: DTM350/700 main drive tooth type: spur gear large gear diameter: 95500mm; tooth: mouth 9 pinion diameter: 930mm; tooth: 22 2 oil pump technical parameters oil pump injection Device manufacturer: Tangshan Power Plant oil pump Model: PSRH3 Oil supply points: 5 points Pipe diameter: lmm Oil supply cycle: 1h Oil supply mode: Automatic rated working pressure: 20MPa Actual working pressure: 8MPa3 Ball mill past lubrication situation 8 billiard mills, from the beginning of grid-connected power generation has been using asphalt-type gear grease, showing many shortcomings in use: fatliquoring is difficult, each fatliquoring by manual coating, consumes a lot of labor, and asphalt is toxic, endangering human health; maintenance difficulties During the overhaul, the green leaves should be cleaned first. Because of the coking and agglomeration of the asphalt, it is quite difficult to clean the tooth surface asphalt, and a large amount of toxic solvent is used. The tooth surface is worn, and the gears, especially the large gears, are worn during maintenance. Traces and corroded eclipses affect gear life; using asphalt grease and solvents can pollute the environment.
4 The use of SH2402 grease is a large, heavy-duty, low-speed open gear transmission. The lubricant must have good anti-wear extreme pressure, adhesion, excellent oxidation resistance and pumping. Sex and so on.
The SH 2402 grease developed by Yiping Company is a new generation of open large gear lubricant. The grease has excellent anti-wear extreme pressure and adhesion properties, as well as high sintering load, suitable for lubrication of various types of large, heavy-duty, low-to-medium-speed open gears, as well as various types of teeth. Lubrication of the coupling shaft. The operating temperature range is - 30~200T. The load carrying capacity is above 19600MPa.
After more than one year of actual use of SH2402 grease, it was found that the tooth surface of the gear is kept intact, and there is a layer of oil film on the surface, no wear, cracks, eclipses, etc.; the oil pump system is normal, there is no blockage of the pipeline phenomenon, the oil pump The pressure is stable; the labor volume is greatly reduced, the amount of fatliquoring and maintenance time are reduced; no solvent, no asphalt, no pollution to the environment, and no harm to the human body.
S conclusions have proved that the 8 billiard mill of our company's 300,000 kW thermal power generator is lubricated with the SH2402 heavy duty open gear grease of Yiping Company, which can fully meet the lubrication requirements of the power mill ball gear large gear, and the effect is good.
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