大庆石化总厂水气厂的100B—75S—32曝气机,是30万t乙烯工程的配套设备,1984年从日本神钢法武都拉(株)引进。污水车间有两个系统,每个系统有4台曝气机,只要1台曝气机损坏,该系统的污水处理就停止,曝气机于1985年投用,1992年7月发现一个系统曝气机的减速器有异声,经解体检查,高速轴承严重损坏,轴承内圈与轴套研死,拆卸非常困难。减速器为三级减速,传递功率75kW。高速轴的轴承与轴套、轴套与轴颈均为过盈配合,轴套与轴颈的过盈量达0.051mm;低速轴的轴承与轴颈的过盈量达0.033mm。加上轴颈结构不合理,没有台肩,因此将高速轴的轴套从轴上拉出来,用60t千斤顶 100B-75S-32 Aerator of Daqing Petrochemical Plant Water and Gas Plant is an auxiliary equipment of 300,000 t ethylene project. In 1984, it was introduced from Japan Kobelco Wadudu (strain). Sewage plant has two systems, each system has four aerators, as long as one aerator damage, the system of sewage treatment stopped, the aerator was put into operation in 1985, in July 1992 found a system exposure Gas machine reducer with different sound, disintegration inspection, high-speed bearings, serious damage to the bearing inner ring and bushings research death, disassembly is very difficult. Reducer for the three deceleration, transmission power 75kW. High-speed shaft bearings and bushings, bushings and journal are interference fit, sleeve and journal interference of 0.051mm; low-speed shaft bearing and journal of the interference amounted to 0.033mm. Coupled with the journal structure is unreasonable, there is no shoulder, so the high-speed shaft sleeve pulled out from the shaft, with 60t jack