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我厂一台8AS—12.5型氨压缩机,发生连杆螺栓断裂。事故发生的经过是这样的:81年9月13日发现该机,缸有异声而停车,检修时发现1缸排汽阀片破裂。更换阀片认运转,仍有异声。后增大死隙(在汽缸套与机体间增加一调整死隙的垫片),异声消除,投入运转。该机间断运转五次,计时8小时50分钟。又发现该机排汽管震动而停车。经检查发现:压缩机,缸连杆螺检断裂,连杆大头变形(附图一)活塞裙部破碎(活塞肖孔以下);汽缸下部破裂;曲轴平衡铁撞伤;曲轴箱油冷却水管一处打扁。事故发生后,对该机进行检修。
I plant a 8AS-12.5 ammonia compressor, connecting rod fracture occurred. After the accident occurred is this: September 13, 81 found that the aircraft, the cylinder has a different sound and parking, maintenance and found 1 cylinder exhaust valve rupture. Change the valve recognition operation, there are still different sound. Increase after the dead space (in the cylinder liner and the body to increase the gap between a gasket adjustment), different sound elimination, put into operation. The machine intermittent operation five times, timing 8 hours and 50 minutes. Also found that the machine exhaust pipe vibration and parking. The inspection found that: the compressor, cylinder connecting rod fracture, connecting rod bulk deformation (Figure 1) piston skirt broken (piston Xiao hole below); lower cylinder rupture; crankshaft balance iron hit; crankcase oil cooling water pipe Fight flat. After the accident, the aircraft overhaul.