n600-1667-537-537反動式汽輪機(jī)熱力系統(tǒng)熱平衡計(jì)算、8號高壓加熱器設(shè)計(jì)熱力工程專業(yè)畢業(yè)設(shè)計(jì)畢業(yè)論文(已修改)
2025-01-30 14:09 本頁面
【正文】 華中科技大學(xué)文華學(xué)院畢業(yè)設(shè)計(jì)論文華中科技大學(xué)文華學(xué)院畢業(yè)設(shè)計(jì)（論文）題 目：熱平衡計(jì)算、8號高壓加熱器設(shè)計(jì)學(xué) 生 姓 名： 學(xué)號：學(xué) 部 (系): 機(jī) 電 學(xué) 部專 業(yè) 年 級: 級熱力工程指 導(dǎo) 教 師：堂 職 稱：副 教 授2010 年 6月 27日目 錄中文摘要...............................................1Abstract.......................................1...............................................3.............................................3 .........................................3 .........................42. 回?zé)嵯到y(tǒng)簡述及其熱經(jīng)濟(jì)性................ ............ 5.....................................5...............................5 ...........................53. 機(jī)組回?zé)嵯到y(tǒng)的熱平衡計(jì)算................ ............ 7.................................7.....................................8 根據(jù)已知條件進(jìn)行熱力計(jì)算............................8.....................16....................................16 高壓加熱器的結(jié)構(gòu)特點(diǎn)...............................17...................18............................18..................18 ..............................22結(jié)論.....................................................22致謝...........................................23 參考文獻(xiàn)................................................ 24附錄一 近似熱力過程曲線..........................25附錄二 高壓加熱器剖面圖........................26附錄三 600MW機(jī)組系統(tǒng)結(jié)構(gòu)性示意圖............... 27中文摘要給水回?zé)嵯到y(tǒng)是發(fā)電廠熱力系統(tǒng)的核心，它對電廠的熱經(jīng)濟(jì)性起著決定性的作用。目前，火力發(fā)電廠普遍采用了回?zé)岢槠麃砑訜徨仩t給水，提高吸熱的平均溫度，減少吸熱的不可逆損失；同時(shí)還要盡可能的降低排汽參數(shù)，使蒸汽能夠最大限度地在汽輪機(jī)中膨脹做功，減少冷源損失。因而，理想循環(huán)的熱效率也增加了，于是在朗肯循環(huán)基礎(chǔ)上采用回?zé)嵫h(huán)，提高了電廠的熱經(jīng)濟(jì)性。高壓加熱器是利用在汽輪機(jī)內(nèi)已作過一部分功的蒸汽來加熱給水，以減少排汽在凝汽器中的熱損失，從而提高循環(huán)熱效率。高壓加熱器能否正常投入運(yùn)行，對火力發(fā)電廠汽輪機(jī)組的經(jīng)濟(jì)性和出力有很大影響。因此，研究回?zé)岢槠到y(tǒng)以及高壓加熱器的設(shè)計(jì)對提高電廠的熱經(jīng)濟(jì)性具有重大的理論和實(shí)踐意義。本文結(jié)合哈爾濱第三電廠600MW機(jī)組，對其回?zé)嵯到y(tǒng)進(jìn)行熱平衡計(jì)算，功率校核及8號高壓加熱器的設(shè)計(jì)，為回?zé)嵯到y(tǒng)和機(jī)組的安全經(jīng)濟(jì)運(yùn)行及技術(shù)改造提供指導(dǎo)作用。關(guān)鍵詞 汽輪機(jī) 回?zé)嵯到y(tǒng) 高壓加熱器 熱經(jīng)濟(jì)性 600MW機(jī)組AbstractWater Heat System is the core of power plant thermal system，It plays a decisive role in economy of thermal power plants. Currently, power plants using regenerative extraction steam to heat boiler feed water, raise the average temperature of endothermic to reduce the irreversible loss of endothermic. While also reducing exhaust parameters as much as possible, so that the steam turbine to maximize the expansion of doing work in reducing the loss of cold source. Thus, the ideal cycle also increases the thermal efficiency. So based on the use of the Rankine cycle Regenerative cycle thermal power plant to improve.Highpressure heater is used in steam turbine power,which has been made part of the steam to heat water to reduce the exhaust steam in the condenser of the heat loss and improve thermal efficiency. Can the operational pressure heater open in normal having a great impact on the economy of Power Plant Steam Turbine.Therefore, the study highpressure heat recovery steam extraction system and heater design to improve the power plant heat economy is of great theoretical and practical significance. In this paper, the third of Harbin Power Plant 600MW units, heat recovery system to its heat balance, power check and design of high pressure heater will supply important evidence for coal—fire pomer plant online monitoring system and will be useful to direct the optimizing operation for the coal
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