CFETR CS模型線圈低溫測試平臺(tái)的真空室及傳輸線的結(jié)構(gòu)設(shè)計(jì)與分析
發(fā)布時(shí)間：2019-01-30 14:57
【摘要】：聚變能因清潔、安全、原料儲(chǔ)量豐富等特點(diǎn)成為解決人類能源問題的一條重要途徑。迄今為止,世界上最大可控核聚變試驗(yàn)反應(yīng)堆—ITER,由7個(gè)國家/地區(qū)共同組建。中國作為參與方之一,在吸收和消化ITER關(guān)鍵制造技術(shù)的同時(shí),也在開展自己的聚變實(shí)驗(yàn)堆建設(shè)(CFETR)。中心螺管線圈(Central Solenoid Coil)作為CFETR的關(guān)鍵部件之一,需滿足最高達(dá)12T的磁場及每秒上T的磁場變化率的要求。因?yàn)槲覈鴽]有中心螺管線圈制造經(jīng)驗(yàn),所以我們提出了開展CFETRCS模型線圈關(guān)鍵技術(shù)的研究工作,即采用與CFETR CS原型線圈相同結(jié)構(gòu)的CICC繞制成的CS模型線圈,確保和CFETR CS線圈具有相同的科學(xué)目標(biāo)和物理參數(shù)。在完成CFETRCS模型線圈的研制后,對模型線圈進(jìn)行一系列的實(shí)驗(yàn)來評估模型線圈的性能。而測試實(shí)驗(yàn)需要建立一個(gè)大型低溫測試平臺(tái),平臺(tái)包括大型真空室及內(nèi)置部件、低溫系統(tǒng)、電源系統(tǒng)、電流引線、傳輸線等。針對低溫測試平臺(tái)的真空室和傳輸線,本文進(jìn)行了較為詳細(xì)的結(jié)構(gòu)設(shè)計(jì)和強(qiáng)度分析研究工作。真空室是CFETRCS模型線圈低溫測試平臺(tái)的主要部件之一,主要作用是為測試線圈、冷屏等低溫部件提供一個(gè)高真空、近似絕熱的工作環(huán)境。真空室的結(jié)構(gòu)設(shè)計(jì)需滿足設(shè)計(jì)要求,且考慮到結(jié)構(gòu)件一般設(shè)計(jì)準(zhǔn)則和材料使用條件等,主要包括:壁厚值的理論計(jì)算和評估、連接法蘭設(shè)計(jì)和強(qiáng)度評估以及開孔補(bǔ)強(qiáng)結(jié)構(gòu)設(shè)計(jì)。根據(jù)真空室正常運(yùn)行或發(fā)生故障時(shí)所遇到的狀況,研究真空室所承受的載荷類型和大小(主要為重力載荷、壓力載荷以及地震載荷),對真空室在不同載荷組成的工況下進(jìn)行了詳細(xì)的應(yīng)力分析計(jì)算和強(qiáng)度評估。從分析結(jié)果來看,真空室的結(jié)構(gòu)設(shè)計(jì)是合理的、安全可靠的。真空室主要內(nèi)置部件為冷屏和結(jié)構(gòu)支撐。針對設(shè)計(jì)要求,材料為304不銹鋼。選用合適尺寸的冷屏和結(jié)構(gòu)支撐在保證冷屏和結(jié)構(gòu)支撐機(jī)械強(qiáng)度的同時(shí),也要保證兩者的漏熱量在一定可接受范圍。對冷屏和結(jié)構(gòu)支撐在不同載荷組成的工況下進(jìn)行了詳細(xì)的應(yīng)力分析計(jì)算和強(qiáng)度評估。且在"最苛刻"的工況下,冷屏和結(jié)構(gòu)支撐的最大應(yīng)力值均滿足材料的強(qiáng)度要求,冷屏和結(jié)構(gòu)支撐的結(jié)構(gòu)設(shè)計(jì)符合要求。傳輸線作為CFETRCS模型線圈低溫測試平臺(tái)的重要組成部分,主要用于連接高溫超導(dǎo)電流引線和測試線圈,實(shí)現(xiàn)測試線圈的勵(lì)磁電流傳輸。傳輸線從材料選擇、電絕緣設(shè)計(jì)、低溫位移補(bǔ)償設(shè)計(jì)、支撐設(shè)計(jì)以及外真空管和冷屏設(shè)計(jì)等幾個(gè)方面進(jìn)行結(jié)構(gòu)設(shè)計(jì)。對傳輸線在不同載荷組成的工況下進(jìn)行了詳細(xì)的應(yīng)力分析計(jì)算和強(qiáng)度評估,且在"最糟糕"的工況下,傳輸線的不銹鋼鎧甲和絕緣層的最大等效應(yīng)力值均滿足材料的應(yīng)力許用值,傳輸線的結(jié)構(gòu)設(shè)計(jì)也是合理的、安全可靠的。
[Abstract]:Fusion energy is an important way to solve the problem of human energy because of its clean, safe and abundant raw materials. To date, ITER, the world's largest controlled nuclear fusion test reactor, has been set up by seven countries. As a member of Fang Zhi, China, while absorbing and digesting the key manufacturing technologies of ITER, is also developing its own fusion experiment reactor to build (CFETR). As one of the key components of CFETR, the central coil (Central Solenoid Coil) needs to meet the requirements of the magnetic field up to 12T and the rate of change of the magnetic field on T per second. Because our country has no experience in the manufacture of central coils, we put forward the research work on the key technology of CFETRCS model coils, that is, CS model coils, which are made by CICC winding with the same structure as CFETR CS prototype coils. Ensure that CFETR CS coils have the same scientific objectives and physical parameters. After the development of the CFETRCS model coil, a series of experiments were carried out to evaluate the performance of the model coil. The test experiment needs to establish a large low temperature test platform, which includes large vacuum chamber and built-in components, low temperature system, power supply system, current lead, transmission line and so on. Aiming at the vacuum chamber and transmission line of the low temperature test platform, the structure design and strength analysis work are carried out in detail in this paper. The vacuum chamber is one of the main components of the CFETRCS model coil low temperature test platform. The main function of the chamber is to provide a high vacuum and near adiabatic working environment for the low temperature parts such as the test coil and the cold screen. The structural design of the vacuum chamber needs to meet the design requirements, and takes into account the general design criteria of structural parts and the application conditions of materials, including: the theoretical calculation and evaluation of wall thickness, the design and strength evaluation of connection flange, and the structural design of perforated reinforcement. According to the conditions encountered in the normal operation or failure of the vacuum chamber, the type and magnitude of the load (mainly gravity load, pressure load and seismic load) under the vacuum chamber are studied. The stress analysis and strength evaluation of the vacuum chamber under different loading conditions are carried out. From the analysis results, the structure design of vacuum chamber is reasonable, safe and reliable. The main components of vacuum chamber are cold screen and structure support. For design requirements, the material is 304 stainless steel. The suitable size of cold screen and structural support should be used to ensure the mechanical strength of cold screen and structural support, and to ensure that the heat leakage between them is in a certain acceptable range at the same time. The stress analysis and strength evaluation of cold screen and structural support under different load conditions are carried out. The maximum stress value of cold screen and structure support meets the strength requirement of material under the "most severe" working condition, and the structural design of cold screen and structure support meets the requirement. As an important part of CFETRCS model coil low temperature test platform, transmission line is mainly used to connect HTS current lead and test coil to realize excitation current transmission of test coil. The transmission lines are designed from several aspects, such as material selection, electrical insulation design, low-temperature displacement compensation design, support design, outer vacuum tube and cold screen design, etc. The stress analysis and strength evaluation of the transmission line under different load components are carried out in detail, and in the "worst" condition, The maximum equal-effect force values of the stainless steel armor and the insulating layer of the transmission line meet the allowable stress value of the material, and the structural design of the transmission line is also reasonable, safe and reliable.
【學(xué)位授予單位】：中國科學(xué)技術(shù)大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2017
【分類號】：TL622
[Abstract]:Fusion energy is an important way to solve the problem of human energy because of its clean, safe and abundant raw materials. To date, ITER, the world's largest controlled nuclear fusion test reactor, has been set up by seven countries. As a member of Fang Zhi, China, while absorbing and digesting the key manufacturing technologies of ITER, is also developing its own fusion experiment reactor to build (CFETR). As one of the key components of CFETR, the central coil (Central Solenoid Coil) needs to meet the requirements of the magnetic field up to 12T and the rate of change of the magnetic field on T per second. Because our country has no experience in the manufacture of central coils, we put forward the research work on the key technology of CFETRCS model coils, that is, CS model coils, which are made by CICC winding with the same structure as CFETR CS prototype coils. Ensure that CFETR CS coils have the same scientific objectives and physical parameters. After the development of the CFETRCS model coil, a series of experiments were carried out to evaluate the performance of the model coil. The test experiment needs to establish a large low temperature test platform, which includes large vacuum chamber and built-in components, low temperature system, power supply system, current lead, transmission line and so on. Aiming at the vacuum chamber and transmission line of the low temperature test platform, the structure design and strength analysis work are carried out in detail in this paper. The vacuum chamber is one of the main components of the CFETRCS model coil low temperature test platform. The main function of the chamber is to provide a high vacuum and near adiabatic working environment for the low temperature parts such as the test coil and the cold screen. The structural design of the vacuum chamber needs to meet the design requirements, and takes into account the general design criteria of structural parts and the application conditions of materials, including: the theoretical calculation and evaluation of wall thickness, the design and strength evaluation of connection flange, and the structural design of perforated reinforcement. According to the conditions encountered in the normal operation or failure of the vacuum chamber, the type and magnitude of the load (mainly gravity load, pressure load and seismic load) under the vacuum chamber are studied. The stress analysis and strength evaluation of the vacuum chamber under different loading conditions are carried out. From the analysis results, the structure design of vacuum chamber is reasonable, safe and reliable. The main components of vacuum chamber are cold screen and structure support. For design requirements, the material is 304 stainless steel. The suitable size of cold screen and structural support should be used to ensure the mechanical strength of cold screen and structural support, and to ensure that the heat leakage between them is in a certain acceptable range at the same time. The stress analysis and strength evaluation of cold screen and structural support under different load conditions are carried out. The maximum stress value of cold screen and structure support meets the strength requirement of material under the "most severe" working condition, and the structural design of cold screen and structure support meets the requirement. As an important part of CFETRCS model coil low temperature test platform, transmission line is mainly used to connect HTS current lead and test coil to realize excitation current transmission of test coil. The transmission lines are designed from several aspects, such as material selection, electrical insulation design, low-temperature displacement compensation design, support design, outer vacuum tube and cold screen design, etc. The stress analysis and strength evaluation of the transmission line under different load components are carried out in detail, and in the "worst" condition, The maximum equal-effect force values of the stainless steel armor and the insulating layer of the transmission line meet the allowable stress value of the material, and the structural design of the transmission line is also reasonable, safe and reliable.
【學(xué)位授予單位】：中國科學(xué)技術(shù)大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2017
【分類號】：TL622
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10 劉e，
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