發(fā)布時(shí)間：2018-08-09 13:08

【摘要】：建立凝汽式汽輪機(jī)冷源損失熱量和排汽焓的計(jì)算模型,實(shí)時(shí)分析負(fù)荷和機(jī)組狀態(tài)對(duì)冷端損失、低壓缸排汽濕度和凝汽器總體換熱系數(shù)的影響規(guī)律�；趧e爾曼公式的形式,提出凝汽器總體換熱系數(shù)的經(jīng)驗(yàn)預(yù)測(cè)公式。結(jié)果表明,冷端能量損失百分比隨負(fù)荷增大而單調(diào)降低。冷端能量損失占機(jī)組總輸入能量的48.4%,占總能量損耗的85%~88%。低壓缸排汽焓隨負(fù)荷增加而單調(diào)降低,排汽濕度隨負(fù)荷增加而單調(diào)增大。低負(fù)荷下,低壓缸排汽為微過(guò)熱蒸汽;高負(fù)荷下,低壓缸排汽為飽和濕蒸汽。凝汽器總體換熱系數(shù)隨負(fù)荷增加而單調(diào)增加,且正比于低壓缸排汽流量。
[Abstract]:The calculation model of cooling source heat loss and exhaust enthalpy of condensing steam turbine is established, and the influence of load and unit state on cold end loss, low pressure cylinder exhaust humidity and overall heat transfer coefficient of condenser is analyzed in real time. Based on the form of Vielman formula, an empirical prediction formula for the total heat transfer coefficient of condenser is presented. The results show that the percentage of energy loss at the cold end decreases monotonously with the increase of load. The energy loss at the cold end accounts for 48.4% of the total input energy of the unit, and 858.88% of the total energy loss. The exhaust enthalpy of low pressure cylinder decreases monotonously with the increase of load, and the exhaust humidity increases monotonously with the increase of load. Under low load, the exhaust steam of low pressure cylinder is slightly superheated steam, and the exhaust steam of low pressure cylinder is saturated wet steam at high load. The overall heat transfer coefficient of the condenser increases monotonously with the increase of the load and is proportional to the exhaust flow of the low pressure cylinder.
【作者單位】： 國(guó)電浙江北侖第一發(fā)電有限公司;國(guó)電集團(tuán)國(guó)電電力發(fā)展股份有限公司;
【分類(lèi)號(hào)】：TM621

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 ;我國(guó)將建1200MW超超臨界燃煤發(fā)電機(jī)組[J];上海電力;2009年02期

2 黃立;;20MW貫流式水輪發(fā)電機(jī)運(yùn)行研究[J];科技創(chuàng)新導(dǎo)報(bào);2012年29期

3 佟瑞新,李日新;登封電廠55MW雙水內(nèi)冷汽輪發(fā)電機(jī)技術(shù)特點(diǎn)、安裝及運(yùn)行[J];電站系統(tǒng)工程;1996年05期

4 ;全國(guó)電力行業(yè)在我省舉辦技能大比武——全國(guó)電力行業(yè)200 MW、300 MW火電機(jī)組機(jī)、爐、電運(yùn)行值班員及300 MW集控值班員技能競(jìng)賽在南京隆重舉行[J];江蘇電機(jī)工程;2001年03期

5 馬元s，

本文編號(hào)：2174170