The utility model discloses a new type of surface deformation repair structure in the low pressure inner cylinder of a steam turbine. By processing the sealing groove on the surface of the lower half low pressure inner cylinder, filling the sealing packing in the sealing groove and compressing it after assembly, forming a new seal structure, which can assist the seal in the low pressure inner cylinder after the present deformation is present, and the repair is low. The inner cylinder of the press continues to deform in operation, forming a medium face opening, and squeezing the sealing packing filled in the seal groove because it bears the extrusion. It has a certain elasticity and can be stretched in the position of the opening to prevent the leakage of the inner cylinder of the low pressure inner cylinder through the deformed open cylinder. The process is flexible, without the need of large machine tool equipment processing, site can be constructed, in the process of regular overhaul of the steam turbine, inserted in the overhaul process, does not take up the repair period, effectively saving the maintenance cost of the production enterprise.
【技术实现步骤摘要】
一种汽轮机低压内缸中分面变形修复结构
本技术属于汽轮机维修技术,具体涉及一种汽轮机低压内缸中分面变形修复结构。
技术介绍
湘潭电厂#3机组为上海汽轮机厂生产的600MW超临界、单轴、三缸四排汽、一次中间再热、凝汽式汽轮机,型号为N600-24.2/566/566(191超临界机组),其中的#3机组扩大性小修中发现低压II内缸变形严重,低压进汽处中部最大间隙达到3.85mm,在冷紧螺栓后仍有2.1mm的间隙,导致压力泄漏。根据厂家技术人员的查看后,需要对机组进行停机大修,重点对#3机低压II内缸中分面缺陷的问题进行返厂修平处理。现有技术需要将机组整体运输返厂修理,通过大型机床对汽缸的两个中分面分别进行机加工修平,处理工期较长,工作量大,对生产企业造成的维修成本过高,并且后期仍然会存在出现低压内缸变形的缺陷,不能解决汽缸变形产生的根本问题。
技术实现思路
本技术解决的技术问题是:针对汽轮机低压内缸中分面变形修复存在的上述缺陷,提供一种新型的汽轮机低压内缸中分面变形修复结构。本技术采用如下技术方案实现:一种汽轮机低压内缸中分面变形修复结构,在所述汽轮机的低压内缸中分面上设有密封槽,所述密封槽内填装有密封填料,所述密封填料由装配后的汽轮机低压内缸压紧。优选的,所述密封槽设置在下半低压内缸中分面进汽口两侧的连接筋平面上。优选的,所述密封槽的长×宽×深分别为:800mm×11mm×8mm。在本技术的汽轮机低压内缸中分面变形修复结构中,所述密封填料为编制盘根。本技术采用上述技术方案,相比较现有通过大型机床对整体汽轮机低压内缸进行返厂修平处理,具有如下有益效果:(1)工艺灵活,无 ...
【技术保护点】
1.一种汽轮机低压内缸中分面变形修复结构,其特征在于:所述汽轮机的低压内缸中分面上设有密封槽,所述密封槽内填装有密封填料,所述密封填料由装配后的汽轮机低压内缸压紧。
【技术特征摘要】
1.一种汽轮机低压内缸中分面变形修复结构,其特征在于:所述汽轮机的低压内缸中分面上设有密封槽,所述密封槽内填装有密封填料,所述密封填料由装配后的汽轮机低压内缸压紧。2.根据权利要求1所述的一种汽轮机低压内缸中分面变形修复结构,所述密封槽设置在下半低压内...
【专利技术属性】
技术研发人员:唐亮,
申请(专利权)人:大唐湘潭发电有限责任公司,
类型:新型
国别省市:湖南,43
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