第一部分 支架形式模拟 ................................................................................................... 2
1.0 普通支架的模拟 ............................................................................................................................ 2 1.1 U-band ...................................................................................................................................... 2 1.2 承重支架 .................................................................................................................................... 3 1.3 导向支架 .................................................................................................................................... 3 1.4 限位支架 .................................................................................................................................... 7 1.5 固定支架 .................................................................................................................................... 7 1.6 吊架 ............................................................................................................................................ 8 1.7 水平拉杆 .................................................................................................................................... 8 1.8 弹簧支架模拟 ............................................................................................................................ 9 2.0 附塔管道支架的模拟 .................................................................................................................. 11 3.0 弯头上支架 .................................................................................................................................. 13 4.0 液压阻尼器 .................................................................................................................................. 14 5.0 CAESARII可模拟虾米弯,但变径虾米弯不能模拟 .................................................................. 15
第二部分 管件的模拟 .................................................................................................... 15
1.0 法兰和阀门的模拟 ...................................................................................................................... 15 2.0 大小头模拟 .................................................................................................................................. 17 3.0 安全阀的模拟 .............................................................................................................................. 18 4.0 弯头的模拟 .................................................................................................................................. 19 5.0 支管连接形式 .............................................................................................................................. 20 6.0 膨胀节的模拟 .............................................................................................................................. 21 6.1 大拉杆横向型膨胀节 .............................................................................................................. 22 6.2 铰链型膨胀节 .......................................................................................................................... 34
第三部分 设备模拟 ......................................................................................................... 42
1.0 塔 .................................................................................................................................................. 42 1.1 板式塔的模拟 .......................................................................................................................... 42 1.2 填料塔的模拟 .......................................................................................................................... 44 1.3 除了模拟塔体的温度,还需模拟塔裙座的温度 .................................................................. 47 2.0 换热器,再沸器 .......................................................................................................................... 48 2.1 换热器模拟也分两种情况 ...................................................................................................... 48
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3.0 板式换热器 .................................................................................................................................. 51 4.0 空冷器 .......................................................................................................................................... 52 4.1 空冷器进口管道和出口管道不在同一侧 .............................................................................. 52 4.2 空冷器进口管道和出口管道在同一侧 .................................................................................. 54 5.0 泵 .................................................................................................................................................. 56 6.0 压缩机,透平 .............................................................................................................................. 58
第四部分 管口校核 ......................................................................................................... 59
1.0 WRC107 .......................................................................................................................................... 59 2.0 Nema 23 ........................................................................................................................................ 62 3.0 API617 .......................................................................................................................................... 64 4.0 API610 .......................................................................................................................................... 65
第五部分 工况组合 ......................................................................................................... 68
1.0 地震 .............................................................................................................................................. 69 2.0 风载 .............................................................................................................................................. 70 3.0 安全阀起跳工况 .......................................................................................................................... 72 4.0 沉降 .............................................................................................................................................. 74
第一部分 支架形式模拟
1.0 普通支架的模拟
1.1 U-band
Strap X Y 2
在CAESAII的输入界面找到restraints选项,并双击打勾,
在Node项目,输入该支架位置的节点,
在type项填入支架的约束形式,U-band只需在type项中输入X,y 用户还需输入支架的摩擦系数Mu,
通常规定:钢与钢接触的承重支架摩擦系数输入0.3
不锈钢与PTFE板接触的承重支架摩擦系数输入为0.1
支架选项中,stif代表支架生根部份的刚度,不输代表无穷大,用户可以把生根部件的刚度输入其中,单位为N/cm
1.2 承重支架
+Y
1.3 导向支架
3