本文選題：低溫液體槽車罐體　切入點(diǎn)：數(shù)值模擬　出處：《北京化工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：低溫液化氣體的廣泛應(yīng)用,使得與低溫液化氣體相關(guān)的儲(chǔ)運(yùn)設(shè)備得到了長(zhǎng)足的發(fā)展。隨著低溫液體需求量的不斷增加,低溫液體運(yùn)輸車正向著大型化和低能耗的方向發(fā)展。本論文對(duì)大型液化氣體罐車的罐體進(jìn)行強(qiáng)度、剛度以及傳熱研究。主要內(nèi)容和結(jié)論如下：(1)使用ANSYS APDL Product模塊對(duì)大型液化氣體罐車罐體進(jìn)行了數(shù)值模擬,考慮了國(guó)家標(biāo)準(zhǔn)規(guī)定的四種運(yùn)輸工況作用。為了更好的模擬實(shí)際支撐情況,在分析的過(guò)程中,采用“標(biāo)準(zhǔn)”接觸方式來(lái)模擬玻璃鋼棒與內(nèi)外罐體的連接。數(shù)值模擬結(jié)果表明,罐體符合強(qiáng)度、剛度要求。(2)低溫液化氣體運(yùn)輸罐的外罐體是典型的外壓容器,為了提高外罐體的抗失穩(wěn)能力,通常設(shè)置多個(gè)加強(qiáng)圈。實(shí)際生產(chǎn)中,為了滿足罐車整體的寬度限制并且不使內(nèi)罐體容積減少,通常對(duì)外罐體加強(qiáng)圈進(jìn)行削邊處理。削邊后的結(jié)構(gòu),不滿足GB150常規(guī)計(jì)算的要求。本論文提出了通過(guò)削邊率計(jì)算剛度削弱系數(shù),進(jìn)而計(jì)算外罐體臨界失穩(wěn)壓力的方法,簡(jiǎn)化工程設(shè)計(jì)中削邊加強(qiáng)圈罐體的失穩(wěn)計(jì)算過(guò)程。(3)對(duì)低溫液化氣體運(yùn)輸車罐體進(jìn)行了熱分析,所建模型忽略了受隔熱材料影響的熱輻射,分析了罐體在熱傳導(dǎo)和熱對(duì)流共同作用下的熱影響區(qū),特別是熱影響區(qū)范圍和溫度梯度大小,這對(duì)實(shí)際工程中的保冷設(shè)計(jì)具有參考價(jià)值。(4)介紹了小型低溫液化氣體槽車用罐的基本結(jié)構(gòu),并對(duì)其在各個(gè)工況下的強(qiáng)度進(jìn)行了計(jì)算。當(dāng)需要增加容積時(shí),強(qiáng)度和保冷對(duì)結(jié)構(gòu)的要求是矛盾的,為同時(shí)滿足兩方面的要求,本論文提出了一種新型結(jié)構(gòu),并對(duì)新型結(jié)構(gòu)的強(qiáng)度進(jìn)行了分析。
[Abstract]:With the wide application of cryogenic liquefied gases, the storage and transportation equipment related to cryogenic liquefied gases has been greatly developed. The cryogenic liquid transport vehicle is developing towards the direction of large scale and low energy consumption. Research on stiffness and Heat transfer. The main contents and conclusions are as follows: 1) numerical simulation of large liquefied gas tank is carried out using ANSYS APDL Product module. In order to better simulate the actual supporting situation, the "standard" contact method is used to simulate the connection between the FRP rod and the inside and outside tank in the process of analysis. The numerical simulation results show that the FRP rod is connected with the inner and outer tank. The outer tank of the cryogenic liquefied gas transport tank is a typical external pressure vessel. In order to improve the instability resistance of the outer tank, several strengthening rings are usually arranged. In order to meet the overall width limit of the tank and not to reduce the volume of the inner tank, the external tank reinforcement ring is usually trimmed. This paper puts forward a method to calculate the stiffness weakening coefficient by cutting ratio, and then calculate the critical unstable pressure of the outer tank. In order to simplify the calculation process of buckling and buckling of the stiffened ring tank in engineering design, the thermal analysis of the tank body of cryogenic liquefied gas transport vehicle is carried out, and the thermal radiation affected by heat insulation material is ignored in the model. The range and temperature gradient of the heat affected zone, especially the heat affected zone, under the combined action of heat conduction and heat convection are analyzed. This paper introduces the basic structure of the tank for small cryogenic liquefied gas tank, and calculates its strength under various working conditions. The requirements of strength and cold preservation are contradictory. In order to meet the requirements of both sides, a new type of structure is proposed and the strength of the new structure is analyzed in this paper.
【學(xué)位授予單位】：北京化工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TQ116;TQ077

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本文編號(hào)：1556675