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根据低温液体运输车罐体的结构和故障的特点,通过真空粉末绝热夹层泄漏气体的分析和抽真空的速度等来判断罐体的泄漏,再综合分析氦质谱仪检测的各种数据,能准确地判断出漏点的位置,并采取相应处理措施,能大大地提高了低温液体罐车的检修效率。 相似文献
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改大型等径罐体为锥形罐体结构,可降低液化气体运输半挂车的质心高度,提高行驶安全,对锥形罐体的放样提出了新的思路。 相似文献
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为了研究液罐车在碰撞中装载液体对罐体结构变形损伤的叠加作用,以客车与液罐车追尾碰撞为研究对象,运用Hypermesh建立两车追尾碰撞的有限元分析(Finite Element Analysis,FEA)模型,利用Fluent模拟碰撞后液体晃动过程,在考虑液体晃动冲击的前提下,计算模拟出两车在碰撞过程中的能量变化及罐体结构变形情况,分析了不同冲击载荷和加载工况下的罐体变形失效情况。结果表明,碰撞速度相同时,液体充装率k 值越大,罐体的变形量越大,罐体破裂的临界碰撞速度与液体充装率k 值呈正相关。液体晃动冲击对罐体变形失效的影响不太显著,液体晃动对罐体的冲击损伤远小于外部车辆带来的碰撞损伤。通过分析液体泄漏情况可知,充装率k 值对液体泄漏速率有显著影响。 相似文献
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如图1,混凝土搅拌车罐体由八部分组成:1.法兰;2.封头;3.前锥;4.中节;5.后锥;6.导轨;7.加强圈;8.人孔盖。制造过程中,罐体总成易出现长度、圆度、同轴度超差问题。对罐体加工工艺过程进行了综合分析后认为:前、后锥加工工艺易造成制造误差,影响罐体总成的尺寸精度及几何精度。…… 相似文献
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散装水泥车罐体结构的改进 总被引:4,自引:0,他引:4
大容积散装水泥罐车大多采用半挂形式,其罐体纵横面多V型,容易发生弯曲变形。改为V型罐体的结构经计算验证表明,不仅增加了罐体的容积,还可提高罐体的刚度。 相似文献
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针对一种聚乙烯衬里罐体的实时检测方法进行了探讨,该方法检测时无需放空物料和清洗设备,可以对使用中的聚乙烯衬里罐体进行实时监测。将罐体功能检测仪的检测探头插入到介质液面中,另一端接检测仪主机,报警器可告知使用者衬里层是否即将破损或已经破损。该检测仪在设备上安装十分便携,其主要意义在于衬里层破损前就能发现隐患,而不需要等到腐蚀掉金属罐体或罐体泄漏才被发现。 相似文献
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<正>危险品运输车的罐体副车架总成(下简称:副车架),由车架纵梁、横梁以及罐体斜撑等部件组成,主要起支撑罐体以及罐体与车架连接的作用。副车架各组成零部件应保证罐体所需的设计强度和刚度,且需对所设计的副车架强度进行校核。本文所设计的副车架材料,纵梁采用Q345B/T6,横梁采用Q345B/T4;设计完成后,对罐体副车架的强度以及与底盘车架的连接支座做局部强度校核计算分析。下面是设计、校核过程。 相似文献
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针对原有工装不能适应日益增大的罐体尺寸规格的问题,在原有工装的基础上进行了一系列的改造,使之能够适应多种罐体的尺寸规格。介绍了工装改造方案及改造后工装的使用与调整方法,改造后的工装由原来只适应单一尺寸规格的罐体变为能够适应多个尺寸规格的罐体,且调整操作简单快捷,提高了生产效率,具有较强的实用性和可操作性,为同类型产品进行工装设计提供了参考。 相似文献
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研究了大型独立液货舱内胆在船舶货舱中多支点定位,调整钢垫块的测量加工和最终落位等安装问题。采用内胆和货舱多支点位置尺寸测量分析,确定内胆在货舱中的最佳安装位置,设计制作临时支承对内胆实行水平定位和调整钢垫块的加工尺寸测量,采用适量、有序、多次火焰切割拆除临时支承,使内胆落位于永久支承上,实现了内胆的正确安装。 相似文献
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X. Kang S. Rakheja I. Stiharu 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2001,35(2):75-102
The directional response and roll stability characteristics of a partly filled tractor-semitrailer vehicle, equipped with various cross-section tanks, are investigated as functions of fill volume and steer inputs. The tank-vehicle combination is analytically modeled upon integrating a quasi-static roll plane model of a partly filled tank of generic cross-section with a three-dimensional directional dynamic model of a five-axle tractor-semitrailer vehicle, assuming constant forward speed. The vehicle model is analyzed for different cross-sections of partly filled tanks, including circular, modified-oval and two optimal cross-sections. The directional response characteristics of the vehicle are evaluated to study the influence of partial-fill condition, steering maneuver, and vehicle speed on the roll dynamic performance of the tank cross-section and the vehicle. A comparison of the response characteristics, in terms of variations in cargo c.g. shift and roll mass moment of inertia, roll angle, lateral acceleration and yaw rate of the trailer sprung mass, revealed that the optimal tank geometry yields considerably less variations in the cargo c.g. coordinates and can thus significantly enhance the directional response and roll stability characteristics of partly-filled tank vehicles. 相似文献
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The directional response and roll stability characteristics of a partly filled tractor-semitrailer vehicle, equipped with various cross-section tanks, are investigated as functions of fill volume and steer inputs. The tank-vehicle combination is analytically modeled upon integrating a quasi-static roll plane model of a partly filled tank of generic cross-section with a three-dimensional directional dynamic model of a five-axle tractor-semitrailer vehicle, assuming constant forward speed. The vehicle model is analyzed for different cross-sections of partly filled tanks, including circular, modified-oval and two optimal cross-sections. The directional response characteristics of the vehicle are evaluated to study the influence of partial-fill condition, steering maneuver, and vehicle speed on the roll dynamic performance of the tank cross-section and the vehicle. A comparison of the response characteristics, in terms of variations in cargo c.g. shift and roll mass moment of inertia, roll angle, lateral acceleration and yaw rate of the trailer sprung mass, revealed that the optimal tank geometry yields considerably less variations in the cargo c.g. coordinates and can thus significantly enhance the directional response and roll stability characteristics of partly-filled tank vehicles. 相似文献
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