A pullout device for removing the connecting pin of a large shaft flange of a hydrogenerator, including a hydraulic jack assembly, a support sleeve, a pullout wire rod, a baffle, a gasket, and a fastening nut. The hydraulic jack assembly comprises a jack, a hydraulic cylinder, a hydraulic jack and a hydraulic hose of a hydraulic cylinder. The jack is provided with a through hole, The aperture of the through hole is larger than the diameter of the outer circle of the pullout wire rod; the support sleeve has a cavity with a diameter larger than the outer diameter of the pullout wire rod, and a through hole is provided between the two ends of the support sleeve; the pullout wire rod is in turn in the through hole, the baffle and the cushion of the jack; the support sleeve is closely fitted to the jack; the support sleeve is closely fitted to the jack; the support sleeve is closely fitted to the jack; the support sleeve is closely fitted to the jack; the support sleeve is closely fitted to the jack; the support sleeve is closely fitted to the jack; the support sleeve is closely fitted to the jack; the The pullout wire rod is matched with the gap between the baffle and the gasket, and the baffle and the gasket are closely fitted, and the fastening nut sleeve is locked on the pullout wire rod and closely fitted with the gasket. The device has the advantages of simple structure, compact structure and convenient operation, which can greatly reduce the working intensity of the pulling pin, improve the working efficiency of the pulling pin and save the maintenance cost.
【技术实现步骤摘要】
一种用于拆卸水轮发电机大轴法兰联接销的拔销装置
本技术属于水力发电
,涉及水力发电设备检修拆装,特别是一种用于拆卸水轮发电机大轴法兰联接销的拔销装置。
技术介绍
在水力发电领域,为保障水力发电机组运行稳定和发电生产安全,水电站机组不定时检修是一项常规工作。在检修过程中,拆卸水轮发电机大轴法兰联接销及其它部件联接销是必不可少的环节,每一台水轮发电机的大轴法兰装有8-12根Φ80-Φ120联接销,且联接销与销孔是过盈配合、配合紧密、摩擦力大,拆卸工作量和工作强度大;同时由于水电站贯流式机组结构特点,作业空间较为狭窄,法兰联接销拆卸很不方便。此领域中,现通常是采用平行双千斤顶式拔销装置:两个千斤顶的底座端分别平行顶在法兰端面一销孔的两侧,两千斤顶的活塞端顶在一300mm*200mm*20mm钢板,钢板与一丝杆一端紧固联接,丝杆的另一端与联接销内孔螺纹联接,千斤顶的活塞带动钢板移动,钢板带动丝杆,从而将与丝杆联接一起的联接销拔出。现有的拔销方法及装置确实可以将联接销拔出,但存在以下不足:1、平行双千斤顶式拔销装置,需要两组人同时操作千斤顶,如不同步,销孔两侧受力不均,引起联接销所受的拉力方向与联接销中心轴线不平行,容易造成联接销和销孔拉伤、丝杆弯曲、钢板变形,增加后续拔销难度;2、此装置占据空间较大,由于水电站机组作业空间的限制,操作不方便3、拔销过程中,在联接销拔离销孔的瞬间,联接销和千斤顶容易掉落,需要多人辅助操作,人工成本较高。
技术实现思路
为克服现有技术的不足,本技术提供了一种用于拆卸水轮发电机大轴法兰联接销的拔销装置。本技术所采用的技术方案是:一种用于拆 ...
【技术保护点】
1.一种用于拆卸水轮发电机大轴法兰联接销的拔销装置,其特征在于:包括液压千斤顶组件、支撑套筒(2)、拔销丝杆(3)、挡板(6)、垫片(7)、紧固螺母(8);所述液压千斤顶组件包括千斤顶(4)、液压缸(11)、连通千斤顶(4)和液压缸(11)的液压软管(12),所述千斤顶(4)设有通孔(5),通孔(5)的孔径大于拔销丝杆(3)外圆直径;所述支撑套筒(2)具有孔径大于拔销丝杆(3)外圆直径的通腔,其两端面之间设有贯通的缺口(14),缺口(14)开度尺寸大于拔销丝杆(3)外圆直径;所述拔销丝杆(3)依次穿于支撑套筒(2)、千斤顶(4)的通孔(5)、挡板(6)、垫片(7);所述支撑套筒(2)与千斤顶(4)紧密贴合;所述拔销丝杆(3)分别与挡板(6)和垫片(7)间隙配合;所述挡板(6)和垫片(7)紧密贴合;所述紧固螺母(8)套锁于拔销丝杆(3)上并与垫片(7)紧密贴合。
【技术特征摘要】
1.一种用于拆卸水轮发电机大轴法兰联接销的拔销装置,其特征在于:包括液压千斤顶组件、支撑套筒(2)、拔销丝杆(3)、挡板(6)、垫片(7)、紧固螺母(8);所述液压千斤顶组件包括千斤顶(4)、液压缸(11)、连通千斤顶(4)和液压缸(11)的液压软管(12),所述千斤顶(4)设有通孔(5),通孔(5)的孔径大于拔销丝杆(3)外圆直径;所述支撑套筒(2)具有孔径大于拔销丝杆(3)外圆直径的通腔,其两端面之间设有贯通的缺口(14),缺口(14)开度...
【专利技术属性】
技术研发人员:林承凯,吴国楠,林非,王建清,
申请(专利权)人:华电沙县能源有限公司,
类型:新型
国别省市:福建,35
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