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doi:10.3969/j. issn. 1009 3230.2015.11.003
应用能源技术
2015年第11期(总第215期)
宝钢产800MPa高强钢模型岔管水压试验
靳先聚
(华电郑州机械设计研究院有限公司,郑州450015)
摘要:浙江仙居抽水蓄能电站钢含管模型采用宝钢产的800MPa级高强钢设计制作,通过在岔管上布置一定的电应变片和位移传感器,对其进行水压试验和爆破试验,得到岔管的应力分布和变形情况,与设计院的有限元计算数值相比较,将计算值和试验数值进行比对分析,并对钢岔管进行加压直至爆裂,为仙居抽水蓄能电站钢岔管的最终设计提供试验依据。
关键词:钢岔管;模型;应力分析;水压试验;爆破试验
中图分类号:TK223.6.5文献标志码:B文章编号:1009-3230(2015)11-0008-03
TheHydraulic Testof HighStrengthSteel of 8ooMPainBifurcated
Pipe Model that Produced in Baosteel
Jinxianju
(Huadian Zhengzhou Mechanical Dsign Institute Co..Ltd Henan Zhengzhou 450015)
Abstract: It is designed and manufactured of high strength steel of 800MPa in bifurcated pipe model that pumped storage hydroelectricity of Xianju, at Zhejiang Province. It is obtained the stress and deformation contour of bifurcated pipe structure which is decorated the strain gauges and displacement sensor through Hydrostatic test and burst test. It studied the experimental and finite element method, comparing with the result of finite element method provided by the Design Institute. At last, the bifurcated pipe is pressed until it is burst, which is experimental support for the final structure desig of bifurcated pipe model of pumped storage hydroelectricity of Xianju, at Zhejiang Province
Key words: Steel bifurcated pipe; Model; Stress analysis; Hydraulic pressure test; Blasting test
0引言
宝钢产800MPa级高强钢模型岔管,以浙江仙居抽水蓄能电站钢岔管设计方案为原型,模型岔管按1:2.5正态模型设计,保持模型岔管管壁厚度、肋板厚度与原型岔管管壁厚度和肋板厚度的比例系数不变,助宽比与原型岔管相当,由正态比例确定合理的模型尺寸。
依据DL/T5141-2001《水电站压力钢管设计规范》"」,模型岔管做水压试验并进行结构应力、
收稿日期:2015-10-15
修订日期:2015-1029
作者简介:新先案(1970-),男,山西晋城人,工程师,主要
从事从事水力电力金属结构、起重设备的检测工作。
万方数据
变形、注水量等测试,掌握钢岔管不同水压试验压力下的应力分布状态,与有限元计算结果相比较,将计算值和试验数值进行比对分析。并对钢岔管进行加压直至爆裂,验证模型岔管的超载能力,为仙居抽水蓄能电站钢岔管的最终设计提供试验依据。
1水压试验过程 1.1岔管参数
模型岔管采用上海宝钢生产的800MPa高强钢,岔管体形为对称Y型内加强月牙肋钢岔管,钢岔管分岔角为75°,公切球半径1126.2mm,是是主管半径的1.1128倍,岔管管壳厚度24mm,