sphere球罐讲义

第24章球形储罐压力容器设计工程师培训教材

目录

•24.1 型式(TYPE)

•24.2 球壳板(SHELL PLATES)

•24.3 装量高度(FILLING HEIGHT)•24.4 标准(STANDARD)

•24.5设计(DESIGN)

•24.6材料(MATERIAL)

•24.7零部件﹑附件(PARTS,ATTACHMENTS)

•24.8球壳板成形(FORMING OF SHELL PETALS)

•24.9组焊(ASSEMBLY WELDING)•24.10无损检测(NONDESTRUCTIVE EXAMINATION)

•24.11焊后整体热处理(POSTWELD HEAD TREATMENT FOR COMPLETED TANK AS A WHOLE)•24.12产品焊接试板(PRODUCT WELDED TEST COUPON)

•24.13压力试验和气密性试验(STATIC PRESSURE TEST AND PNEUMATIC TEST)

•24.14特种球罐(SPHERICAL TANK FOR SPECIAL PURPOSE)

24.1型式

(a)桔瓣式(b)足球瓣式(c)混合式

图24-1 球壳板结构型式

表24.1 1000m3桔瓣式与混合式球罐比较表

型式

球壳

分带数

支柱

根数

总块数各带分块数

焊缝

长度

(m)

桔瓣式58543+16+16+16+3352引进罐

混合式38287+14+7272

桔瓣式5

8

10

54

66

3+16+16+16+3

3+20+20+20+3

GB/T17261

混合式3

4

8

10

30

54

7+16+7

7+20+20+7

24.2球壳板

•球壳板设计要点﹕

•(1)球壳板的几何尺寸应尽可能大。•(2)选择合适的钢板规格,提高板材利用率。•(3)规格要少,互换性要好。

•(4)相邻带纵焊缝应相互错开。

•(5)焊缝布局应均匀,减少装配应力﹑拘束应力与残余应力。

•(6)必须考虑压机及起重能力。

图24-2 引进1000m3丙烯罐俯视图

名称块数

球壳板尺寸

长x宽(弧长)mm

原材料钢板尺寸

长x宽,mm

赤道板温带板极中板极侧板20

40

2

4

6047.6x2237.6

6047.6x2237.6

6155x2450 (20块)

6250x3515 (20块)

6085x3055 (2块)

5330x3065 (2块)

面积总和

(m2)

746810.83表24.2-1 1900m3乙烯罐下料表

公称容积内径各带板数各带球心角°(m 3

) (mm)L

M N 型式S1S2S3S4S5支柱数量焊缝长度(m)400915012––A 903030––6154.4500985012––A 903030––6166.26001050012––A 903030––6177.17001105012––A 903030––6186.48001155012––B 602424––8224.59001200012––B 602424––8233.310001245016––B 702222––8274.515001425016––B 702222––8314.220001565015––B 702220––10335.525001685018––B 802020––12402.93000179001818–C 10401818–12494.63500188502121–D 5022.51717–14513.64000197002424–D 50251616–16708.75000212502424–D 5027.51515–16775.56000

22550

24

24

24

E

40

30

20

14

14

16

892.5

表24.2-2 国外某公司液体球罐球壳板分割表

表24.2-2附图-球罐型式

球罐装量系数与装量高度关系:

装量系数K 系球缺体积V ´与壳体

积V 之比值:

令:装量系数K 相对应的装量高度

H 为:H=kD

i k 为装量高度系数,则:K=3k 2-2k 3

例:1000m 3丙烯球罐,内径

Di=12300mm,装量系数K=0.9,

求装量高度?

解:查表24.3:K=0.9得k=0.8042

则其装量高度为:

H=kDi=0.8042x12300=9891.66

mm 24.3 装量高度

3

234)

3('i

R H

Ri H V V K ππ-==H

Di

表24.3 装量系数K与装量高度系数k的关系

K k K k K k K k K k 0.500.50000.600.56710.700.63680.800.71290.900.8042 0.510.50670.610.57390.710.64400.810.72110.910.8150 0.520.51330.620.58070.720.65130.820.72940.920.8263 0.530.52000.630.58760.730.65870.830.73800.930.8383 0.540.53670.640.59450.740.66610.840.74670.940.8510 0.550.53340.650.60140.750.67360.850.75560.950.8646 0.560.54010.660.60840.760.68130.860.76470.960.8796 0.570.54680.670.61540.770.68900.870.77410.970.8964 0.580.55350.680.62250.780.69680.880.78380.980.9160 0.590.56030.690.62960.790.70480.890.79380.990.9411