本文選題：移動(dòng)熱源 + 供熱事故　； 參考：《哈爾濱工業(yè)大學(xué)》2017年碩士論文

【摘要】：熱網(wǎng)事故發(fā)生的隨機(jī)性與不可避免性增加了事故預(yù)防的困難度,而移動(dòng)熱源的出現(xiàn)很好的解決了能源在時(shí)間與空間上的匹配問(wèn)題,可以作為供熱系統(tǒng)事故工況下的輔助熱源。然而,目前移動(dòng)熱源的容量較小,我國(guó)對(duì)在事故工況下以移動(dòng)熱源為輔助的搶修應(yīng)用較少。所以,如何建立以移動(dòng)熱源為輔助供熱的出救模型,優(yōu)化移動(dòng)熱源在事故發(fā)生時(shí)的出救容量,是目前急需解決的問(wèn)題。本文基于以移動(dòng)熱源為輔助供熱建立了事故工況下的供熱系統(tǒng)運(yùn)行調(diào)度模型,得到熱源位置不同時(shí)多熱源聯(lián)合供熱系統(tǒng)聯(lián)網(wǎng)運(yùn)行與解列運(yùn)行方案,分析了閥門(mén)位置的改變對(duì)移動(dòng)熱源出救容量的影響。對(duì)移動(dòng)熱源在事故搶修中的應(yīng)用提供相應(yīng)的理論指導(dǎo)。首先,根據(jù)目前市場(chǎng)上應(yīng)用的蓄熱式移動(dòng)供熱和鍋爐式移動(dòng)供熱的優(yōu)缺點(diǎn),本文首先分析研究了兩種形式移動(dòng)熱源的應(yīng)用范圍和工作原理。理論分析了單熱源枝狀管網(wǎng)與單熱源環(huán)狀管網(wǎng)在發(fā)生事故時(shí),基于移動(dòng)熱源輔助供熱對(duì)系統(tǒng)可靠性的影響。根據(jù)枝狀管網(wǎng)的特點(diǎn),以及循環(huán)水泵揚(yáng)程的確定原則,計(jì)算得到在最不利用戶區(qū)域處解列熱負(fù)荷對(duì)系統(tǒng)限額供熱系數(shù)的影響最大。其次,對(duì)多熱源環(huán)狀管網(wǎng)進(jìn)行建模分析。在管網(wǎng)原有閥門(mén)的基礎(chǔ)上,對(duì)管網(wǎng)進(jìn)行獨(dú)立區(qū)的劃分,確定事故工況下解列運(yùn)行的關(guān)閥方案集。理論分析環(huán)狀管網(wǎng)的特點(diǎn),確定事故工況下的聯(lián)網(wǎng)運(yùn)行方案。在不低于最低限額供熱系數(shù)值的前提下,以“移動(dòng)熱源的出救容量最小”為目標(biāo)函數(shù),建立熱網(wǎng)系統(tǒng)在事故工況下的優(yōu)化運(yùn)行數(shù)學(xué)模型。并且根據(jù)水力匯流點(diǎn)的特殊作用,分析在熱網(wǎng)系統(tǒng)正常運(yùn)行工況水力匯流點(diǎn)附近增加閥門(mén)的設(shè)置,對(duì)移動(dòng)熱源出救容量的影響。最后,基于模型案例分析了熱源位置不同時(shí)多熱源聯(lián)合供熱系統(tǒng)聯(lián)網(wǎng)運(yùn)行與解列運(yùn)行的優(yōu)化運(yùn)行方案,驗(yàn)證計(jì)算方案的可行性。在實(shí)際工程案例中,通過(guò)模型計(jì)算對(duì)事故工況下移動(dòng)熱源的配置臺(tái)數(shù)進(jìn)行選擇。
[Abstract]:The randomness and inevitability of heat network accidents increase the difficulty of accident prevention, and the emergence of moving heat sources can solve the problem of energy matching in time and space, and can be used as auxiliary heat sources in heating system under accident conditions. However, at present, the capacity of moving heat source is relatively small, and there are few emergency repair applications in China which are assisted by moving heat source under accident conditions. Therefore, how to set up the rescue model with moving heat source as auxiliary heating, and how to optimize the rescue capacity of moving heat source at the time of accident, is an urgent problem that needs to be solved at present. In this paper, based on the moving heat source as the auxiliary heating source, the operation and scheduling model of the heating system under the accident condition is established, and the network operation and de-listing operation scheme of the multi-heat source combined heating system with different heat source positions are obtained. The influence of valve position on the rescue capacity of moving heat source is analyzed. It provides corresponding theoretical guidance for the application of moving heat source in accident repair. Firstly, according to the advantages and disadvantages of regenerative mobile heating and boiler mobile heating, this paper firstly analyzes the application scope and working principle of two kinds of moving heat sources. In this paper, the influence of auxiliary heating based on moving heat source on the reliability of single heat source branch pipe network and single heat source ring pipe network is analyzed theoretically. According to the characteristics of the branch pipe network and the principle of determining the lift of the circulating water pump, it is found that the heat load at the most unfavorable user area has the greatest influence on the heating coefficient of the system. Secondly, the multi-heat source ring pipe network is modeled and analyzed. On the basis of the original valve of the pipe network, the independent zone of the pipe network is divided, and the set of closing valve schemes for unlisting and running under the accident condition is determined. The characteristics of annular pipe network are analyzed theoretically, and the network operation scheme under accident condition is determined. Under the premise of not less than the minimum limit heating coefficient value, the mathematical model of optimal operation of heat network system under accident condition is established with the objective function of "minimum rescue capacity of moving heat source". According to the special function of the hydraulic confluence point, the effect of adding valve near the hydraulic confluence point in the normal operation condition of the heat network system is analyzed, and the influence of the valve on the rescue capacity of the moving heat source is analyzed. Finally, based on the model case, the optimal operation scheme of multi-heat source combined heating system with different heat source locations is analyzed, and the feasibility of the calculation scheme is verified. In the actual engineering case, the allocation of moving heat source under accident condition is selected by model calculation.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TU995

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本文編號(hào)：2106266