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煤机组汽前泵效率在线分析系统研究
2020年电子技术应用第10期
张喜平,吴 春,李 芮
中国大唐集团新能源科学技术研究院有限公司,北京100043
摘要: 汽前泵是大型燃煤机组重要辅助设备,汽前泵泵效率不但是泵运行经济性的重要技术指标,对泵效率劣化趋势的连续分析也是实现汽前泵故障早期诊断的重要技术手段。设计了一种利用火电厂厂级监控信息系统实时数据,实现汽前泵效率在线计算和劣化分析的燃煤机组汽前泵效率在线分析系统。该系统能够快速准确地分析汽前泵的效率劣化趋势,为汽前泵的状态检修提供准确的前期预警和决策依据。系统设计过程中充分考虑了泵效率的计算所要求的机组稳定工况,同时也充分考虑了传感器安装位置不同对泵效率计算的影响,并对其进行补偿。系统设计采用B/S架构,服务端编程使用Java语言,前端使用Bootstrap开源项目。
中圖分類(lèi)號(hào): TN98;TM621.7
文獻(xiàn)標(biāo)識(shí)碼: A
DOI:10.16157/j.issn.0258-7998.200010
中文引用格式: 張喜平,吳春,李芮. 煤機(jī)組汽前泵效率在線(xiàn)分析系統(tǒng)研究[J].電子技術(shù)應(yīng)用,2020,46(10):93-96.
英文引用格式: Zhang Xiping,Wu Chun,Li Rui. Research on on-line efficiency analysis system of booster-pump of coal-fired unit[J]. Application of Electronic Technique,2020,46(10):93-96.
Research on on-line efficiency analysis system of booster-pump of coal-fired unit
Zhang Xiping,Wu Chun,Li Rui
China Datang Corporation Renewable Energy Science and Technology Research Institute,Beijing 100043,China
Abstract: Booster-pump of turbo-feed pump is an important auxiliary equipment of coal-fired power unit. The efficiency of the booster-pump is an important economic index of the pump operation. And also the deterioration analysis of booster pump′s efficiency is an important technical means to realize the early diagnosis pump fault. This paper describes how to design an on-line analysis system of the booster-pump-efficiency, which uses the real-time data of the Supervisory Information System to complete booster pump′s efficiency on-line calculation and the efficiency deterioration analysis. It can quickly and accurately analyze the deterioration trend of the efficiency of booster-pump and provide early warning of the booster-pump fault, which is one of important decision-making basis for the condition based maintenance of the booster-pump. In the process of system design, the stable working condition of the unit required by the calculation of pump efficiency is fully considered, as well as the influence of different installation positions of sensors on the calculation of pump efficiency, and compensation is made for it. The system is designed with B/S framework, Java language is used for server programming, and Bootstrap open source project is used for front-end.
Key words : coal-fired power unit;booster-pump;efficiency;on-line analysis system

0 引言

    燃煤機(jī)組的監(jiān)控系統(tǒng)(SIS)是數(shù)字化電廠(chǎng)的重要組成部分,集成了現(xiàn)代的微電子處理、計(jì)算機(jī)、自動(dòng)控制等科學(xué)技術(shù)。但是,對(duì)于燃煤機(jī)組的一些主要輔助設(shè)備而言,自動(dòng)化、智能化水平相對(duì)較低,仍然存在監(jiān)控中心無(wú)法對(duì)輔助設(shè)備進(jìn)行實(shí)時(shí)監(jiān)控、輔助設(shè)備運(yùn)行狀況未能進(jìn)行高效的統(tǒng)一管理及記錄等問(wèn)題,制約著發(fā)電廠(chǎng)的無(wú)人值守、自動(dòng)化水平的提升,影響著各項(xiàng)先進(jìn)生產(chǎn)管理制度的執(zhí)行[1-8]。因此研發(fā)燃煤機(jī)組主要輔助設(shè)備的在線(xiàn)分析系統(tǒng)具有重要的現(xiàn)實(shí)意義。

    汽前泵是大型燃煤機(jī)組重要輔助設(shè)備,一般每臺(tái)機(jī)組配置2臺(tái)汽前泵。單臺(tái)汽前泵故障停運(yùn)時(shí),會(huì)導(dǎo)致機(jī)組降出力運(yùn)行,汽前泵全部停運(yùn)則會(huì)引起發(fā)電機(jī)組停運(yùn)。汽前泵效率是汽前泵設(shè)備劣化的重要指標(biāo)[9-10]。泵出口密封環(huán)破損、葉片汽蝕等設(shè)備故障的早期會(huì)體現(xiàn)在泵效率的劣化。因此,定期進(jìn)行泵效率實(shí)驗(yàn)并對(duì)試驗(yàn)結(jié)果進(jìn)行分析,是火力發(fā)電企業(yè)汽前泵設(shè)備管理的重要工作。目前,汽前泵效率現(xiàn)場(chǎng)試驗(yàn)較為復(fù)雜,需試驗(yàn)人員現(xiàn)場(chǎng)布置試驗(yàn)測(cè)點(diǎn)和數(shù)據(jù)采集裝置,并需機(jī)組調(diào)整運(yùn)行方式,在泵效率曲線(xiàn)各特征點(diǎn)錄取相關(guān)數(shù)據(jù)進(jìn)行分析計(jì)算。隨著火電廠(chǎng)廠(chǎng)級(jí)監(jiān)控信息系統(tǒng)(SIS)的推廣和普及,汽前泵效率的在線(xiàn)實(shí)時(shí)計(jì)算具備了條件。本文設(shè)計(jì)并實(shí)現(xiàn)了一種利用火電廠(chǎng)廠(chǎng)級(jí)監(jiān)控信息系統(tǒng)的實(shí)時(shí)數(shù)據(jù)完成汽前泵效率在線(xiàn)計(jì)算和劣化趨勢(shì)的泵效率在線(xiàn)分析系統(tǒng),為火力發(fā)電機(jī)組主要輔助設(shè)備在線(xiàn)性能試驗(yàn)做有益的探索和實(shí)踐。




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作者信息:

張喜平,吳  春,李  芮

(中國(guó)大唐集團(tuán)新能源科學(xué)技術(shù)研究院有限公司,北京100043)

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