【摘 要】
：
田湾核电站1号机组除氧系统某节流孔板后方的直管段在一个换料周期内壁厚由6.6 mm减薄至2.5 mm,极易造成管道泄漏,为机组安全运行带来潜在的隐患。本文就除氧系统孔板后管道
【机 构】
：
中国核动力研究设计院,江苏核电有限公司,
论文部分内容阅读
田湾核电站1号机组除氧系统某节流孔板后方的直管段在一个换料周期内壁厚由6.6 mm减薄至2.5 mm,极易造成管道泄漏,为机组安全运行带来潜在的隐患。本文就除氧系统孔板后管道减薄磨损位置、汽蚀原理进行分析,对除氧系统孔板设计存在的缺陷、采用多级节流孔板代替单级节流孔板优势及管道减薄改进措施进行综合论述。通过改造,满足了除氧系统给水管线的运行要求,且有效降低了管道腐蚀速率。
In Tianwan Nuclear Power Plant Unit 1 deaerator system, a straight pipe section behind an orifice plate is thinned from 6.6 mm to 2.5 mm in one refueling cycle, which can easily lead to pipeline leakage and bring potential risks to the safe operation of the unit. In this paper, after the orifice of deaeration system, the thinning and wear position of the pipe and the principle of cavitation are analyzed. The defects of the orifice design of the deoxygenation system are solved by adopting the multi-level orifice to replace the advantage of the single-stage orifice and the thinning of the pipe Improvement measures for a comprehensive discussion. Through the modification, the operation requirements of the water supply pipeline of the deaeration system are satisfied, and the pipeline corrosion rate is effectively reduced.
其他文献
Preferential solvation of pomalidomide (PMD) was explored in dimethyl sulfoxide (DMSO)-dimethylformamide (DMF),DMSO-tetrahydrofuran (THF).DMSO-methanol (MeOH),D
葡萄是一种古老的果树树种,其果实可以鲜食,可以制成葡萄干、葡萄酒.葡萄的根和藤有止吐、安胎的药用价值,葡萄皮中含有大量的花青素、白藜芦醇、鞣酸,葡萄本身有健脾和胃、
一、设施果树栽培技术原理rn设施果树栽培技术主要是通过人为创建适宜果树生长的环境,也就是通过调控湿度、温度以及日照等气候条件,来促进果树的生长发育和调控开花结果的时
【世界核新闻网站2014年10月1日报道】根据最新公布的恢复计划,美国废物隔离中间工厂(WIPP)将于2016年第一季度恢复运行。该设施是一座超铀废物处置设施,因在2014年2月发生的
在现代农业发展中,要强化对改善农业生产现状、提高农业生产效率这一重要课题的研究, 积极推广普及农业节本增效技术,提高农产品在市场上的竞争力,确保农业增产,农民增收.本
目的:研究沙蜇刺丝囊毒素的提取及其溶血活性稳定性的影响因素.方法:通过自溶法制备沙蜇刺丝囊细胞,利用超声波破碎细胞提取毒素,再将毒素置于不同温度、不同pH值及不同浓度
针对核电站安全注入系统(RIS)低压安注泵(LHSI)小流量管线减振改造方案,开展可实施性评估。采用计算流体动力学(CFD)数值计算与试验模型回路验证相结合的方法,对减振效果进行
The wettability of the membrane surface has shown obvious influent on the separation performance of the membrane.In this work,a hydrophilic PDA-[PDDA/TiO2]+ Cl-
Methotrexate (MTX) is one of the most consumed anti-cancer drugs in the pharmaceutical market around the world.The widespread occurrence of MTX in aquatic envir
Polyethyleneimine (PEI) modified palygorskite (Pal) was used for the adsorption of Cr(Ⅵ) in aqueous solution.The absorbent was characterized by Fourier transfo