發(fā)布時間：2018-02-15 12:50

  本文關(guān)鍵詞： 鍋爐給水泵 運行參數(shù) 優(yōu)化改進(jìn) 出力匹配 節(jié)能降耗　出處：《華北電力大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：鍋爐給水泵是火力發(fā)電廠中最重要的輔機(jī)。鍋爐給水泵在火電廠實際運行時，由于設(shè)計選型或機(jī)組系統(tǒng)等諸方面的原因，其性能參數(shù)往往會偏離了給水泵的設(shè)計工況點，泵運行參數(shù)出力不夠或出力偏大，泵效率也偏離了給水泵的最佳效率工況點。這就造成了鍋爐給水泵運行參數(shù)及出力與機(jī)組實際工況的不匹配現(xiàn)象，鍋爐給水泵效率偏低，軸功率加大，耗電量增加，機(jī)組效率降低，造成了較大的能源浪費。 本文研究分析了火電廠鍋爐給水泵在運行過程中出現(xiàn)的流量、揚(yáng)程、汽蝕余量等性能參數(shù)及出力與機(jī)組系統(tǒng)不匹配等方面的各種現(xiàn)象和問題，從給水泵的設(shè)計理論和現(xiàn)場運行工況的角度分析問題出現(xiàn)的深層原因和機(jī)理，，提出符合實際、切實有效、經(jīng)濟(jì)可靠的解決措施和處理方案，使鍋爐給水泵能夠適應(yīng)火電廠的實際運行工況，保證鍋爐給水泵在最佳工況點、最高效率點運行，從而提高了鍋爐給水泵和整個機(jī)組的效率，降低了機(jī)組的能源消耗。同時，分析研究給水泵運行過程中性能參數(shù)問題，便于同類產(chǎn)品的改進(jìn)設(shè)計和性能提高，為新產(chǎn)品的研制提供借鑒，也為電力規(guī)劃設(shè)計部門提供了給水泵性能參數(shù)的匹配性確定依據(jù)。
[Abstract]:Boiler feedwater pump is the most important auxiliary machine in thermal power plant. When boiler feedwater pump is in actual operation in thermal power plant, its performance parameters often deviate from the design working point of feedwater pump due to the reasons of design type selection or unit system, etc. The pump operating parameters are not enough or large, and the pump efficiency deviates from the optimum efficiency point of the feed pump, which results in the mismatch between the boiler feed pump operating parameters and the actual working conditions of the unit, and the low efficiency of the boiler feed pump. The increase of shaft power, the increase of power consumption and the decrease of unit efficiency result in a great waste of energy. In this paper, the phenomena and problems of flow rate, lift, cavitation allowance and mismatch between generating force and unit system are studied and analyzed in the operation of boiler feedwater pump in thermal power plant. This paper analyzes the deep causes and mechanism of the problem from the angle of the design theory of the feedwater pump and the operating condition of the field, and puts forward the solving measures and the treatment scheme which accord with the reality, practical, effective, economic and reliable. The boiler feed water pump can adapt to the actual operation condition of the thermal power plant, and ensure the boiler feed water pump to run at the best working condition and the highest efficiency point, thus improving the efficiency of the boiler feed water pump and the whole unit, reducing the energy consumption of the unit, at the same time, In order to improve the design and performance of similar products, this paper analyzes and studies the problem of performance parameters in the course of operation of feedwater pumps, and provides reference for the development of new products, as well as a basis for determining the matching of performance parameters of feedwater pumps for power planning and design departments.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM621

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 王能秀,劉甲凡;離心泵葉輪出口參數(shù)的選擇[J];華中工學(xué)院學(xué)報;1987年01期

2 李海東;計算流體力學(xué)正在蓬勃發(fā)展中[J];科技導(dǎo)報;1997年12期

3 梁永儀,張挺,孫明光;間隔式切割葉片對離心泵性能的影響[J];流體工程;1993年10期

4 陳洪海,袁壽其;低比速離心泵優(yōu)化設(shè)計方法[J];流體機(jī)械;2001年08期

5 王文全;張立翔;閆妍;姚激;;節(jié)能離心泵全流道內(nèi)部湍流的動態(tài)大渦模擬[J];流體機(jī)械;2008年01期

6 楊敏官;李輝;高波;劉棟;顧海飛;;離心泵內(nèi)流場計算及空間導(dǎo)葉內(nèi)流動分析[J];流體機(jī)械;2008年07期

7 潘小強(qiáng),袁王景;CFD軟件在工程流體數(shù)值模擬中的應(yīng)用[J];南京工程學(xué)院學(xué)報(自然科學(xué)版);2004年01期

8 彭曉強(qiáng),張永學(xué),曹樹良,王國玉;低比轉(zhuǎn)數(shù)離心泵葉輪出口紊流流動結(jié)構(gòu)分析[J];農(nóng)業(yè)機(jī)械學(xué)報;2004年01期

9 牟介剛,王樂勤;離心泵性能曲線駝峰判據(jù)的探討[J];農(nóng)業(yè)機(jī)械學(xué)報;2004年04期

10 何希杰,勞學(xué)蘇;離心泵性能曲線穩(wěn)定判據(jù)[J];水泵技術(shù);1994年03期

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