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煤機(jī)組汽前泵效率在線分析系統(tǒng)研究
2020年電子技術(shù)應(yīng)用第10期
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
摘要： 汽前泵是大型燃煤機(jī)組重要輔助設(shè)備，汽前泵泵效率不但是泵運(yùn)行經(jīng)濟(jì)性的重要技術(shù)指標(biāo)，對(duì)泵效率劣化趨勢(shì)的連續(xù)分析也是實(shí)現(xiàn)汽前泵故障早期診斷的重要技術(shù)手段。設(shè)計(jì)了一種利用火電廠廠級(jí)監(jiān)控信息系統(tǒng)實(shí)時(shí)數(shù)據(jù)，實(shí)現(xiàn)汽前泵效率在線計(jì)算和劣化分析的燃煤機(jī)組汽前泵效率在線分析系統(tǒng)。該系統(tǒng)能夠快速準(zhǔn)確地分析汽前泵的效率劣化趨勢(shì)，為汽前泵的狀態(tài)檢修提供準(zhǔn)確的前期預(yù)警和決策依據(jù)。系統(tǒng)設(shè)計(jì)過(guò)程中充分考慮了泵效率的計(jì)算所要求的機(jī)組穩(wěn)定工況，同時(shí)也充分考慮了傳感器安裝位置不同對(duì)泵效率計(jì)算的影響，并對(duì)其進(jìn)行補(bǔ)償。系統(tǒng)設(shè)計(jì)采用B/S架構(gòu)，服務(wù)端編程使用Java語(yǔ)言，前端使用Bootstrap開(kāi)源項(xiàng)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。隨著火電廠廠級(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)了一種利用火電廠廠級(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計(jì)算和劣化趨勢(shì)的泵效率在線分析系統(tǒng)，為火力發(fā)電機(jī)組主要輔助設(shè)備在線性能試驗(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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