蝶阀设计计算书

bM
FMJ+FMF π/4*(DMN+bM)2*P
设计给定 设计给定
5 设计压力
P
设计给定
6 密封面上密封力 7 密封面必须比压 8 密封面计算比压 9 密封面许用比压
FMF
π*(DMN+bM)*bM*qMF
qMF
查《实用阀门设计手册》表3-21
q
FMZ/[π*(DMN+bM)*bM]
[q]
查《实用阀门设计手册》表3-22
2、表中标红的为计算数值，标黄的为过程计算值，标绿的由设计者填写。
简
图
DN 单位
DN 计算数值
#DIV/0! #DIV/0! #DIV/0!
3
型号
零件名称 材料牌号 计算内容
阀体 壁厚校核
序号
计算数据名称
符号
公
式
ASME B16.34阀体通道处最小壁厚
1 壳体最小壁厚
Tm'
2 流道最小直径
d
λd+β+C 设计给定
3 设计壁厚 4 附加裕量
Tm
设计给定
C
设计给定
5 ASME B16.34标准壁厚
结论
#DIV/0!
备注：1、计算公式选自《实用阀门设计手册》第3版 P1266 表5-218；
2、表中标红的为计算数值，标黄的为过程计算值，标绿的由设计者填写。
DN 单位
N N mm mm MPa N MPa MPa MPa
DN 计算数值
0 0
0 #DIV/0!
5
型号 零件名称 材料牌号 计算内容
tB
设计给定（≥MAX[T，TB']）
t'
查GB 26640 P14 表9
结论
合格
备注：1、壁厚计算公式选自GB/T 12238-2008 P10式A.1~A.3；
2、表中标红的为计算数值，标绿的由设计者填写，标蓝的为设计者选填。
DN 单位
mm mm mm mm MPa MPa mm MPa mm mm
3.蝶板最大直径
蝶板 蝶板最大直径
序号
计算数据名称
符号
公式
1 蝶板的弦长
a
d-2c
2 蝶板最大直径
D'
(W2+a2)1/2
3 蝶板和管道或法兰内径之间的公称径向直径
c
设计给定
4 连接管道或法兰的内径
d
设计给定
5 阀门最小安装结构长度
W
设计给定
6 蝶板设计直径
D
设计给定
结论
不合格
备注：1、计算公式选自API 609 P9；
0.064d+2.34 0.020d+4.50 0.0163d+4.70 0.080d+2.29 0.07d+2.54
2.34
4.5
4.7
2.29
2.54
50＜d＜1500 0.033d+4.40
4.4
3≤d＜25 0.086d+2.54
2.54
Class600 25≤d≤50 0.058d+3.30
3.3
50＜d＜1500 0.067d+2.79
2.79
不合格
不合格
不合格
不合格
不合格
不合格
不合格
不合格
不合格
型号 零件名称 材料牌号 计算内容
2.阀座密封比压
简 阀座
密封比压
图
4
序号
计算数据名称
符号
公式
1 密封面上总作用力及计算比压
FMZ
2 密封面出介质作用力
FMJ
3 密封面内径
DMN
4 密封面宽度
2．阀座密封比压································································································ 4 3．蝶板最大直径································································································ 5 4．蝶板厚度······································································································· 7 5．蝶板强度校核································································································ 9
1
型号 零件名称 材料牌号 计算内容
1.1.阀体壁厚-国标（塑性材料）
简 阀体
壁厚校核
图
序号
计算数据名称
符号
公式
DN 单位
1 阀体计算壁厚
T
Pd/(2.3[σL]-P)+C
mm
2 计算压力
P
设计给定
MPa
3 计算内径
d
设计给定
mm
4 许用拉应力 5 腐蚀余量
[σL]
查ASME BPVC Ⅱ-2013 Part D
T
查阅ASME B16.34 P93 表3A
结论
备注：1、壁厚计算公式选自ASME B16.34 P130 表VI-1；
2 、表中标红的为计算数值，标绿的由设计者填写。
1.2.阀体壁厚-美标 简
图
DN 单位
mm mm mm mm mm
Class150
Class300
3≤d＜50 50≤d≤100 100＜d＜1500 3≤d＜25 25≤d≤50
DN 计算数值
#DIV/0!
2
型号 零件名称 材料牌号 计算内容
1.1.阀体壁厚-国标（脆性材料）
简 阀体
壁厚校核
图
序号
计算数据名称
符号
公式
1 阀体计算壁厚
t
2 PN≤10，DN≤1000（灰铸铁）
1.1×[(P+P')D/2W+8.5(1-D/1200)]
3 PN≤10，DN≥1200（灰铸铁）
5.1．饼状式蝶板····························································································· 9 5.2．平板式蝶板···························································································· 10 5.3．桁架式蝶板···························································································· 11 6．阀门总扭矩·································································································· 12 6.1．阀座和转动扭矩···················································································· 13 6.2．包装和轮毂扭矩···················································································· 14 6.3．轴承扭矩······························································································· 15 6.4．重力中心扭矩························································································ 16 6.5．静水力矩······························································································ 17 6.6．动态连接······························································································ 18 6.7．轴偏心扭矩··························································································· 19 7．阀杆强度校核······························································································ 20 7.1．整体式阀轴··························································································· 20 7.2．分体式阀轴··························································································· 21 8．蝶板与阀杆连接强度校核············································································ 22 8.1．销连接·································································································· 22 8.2．键连接·································································································· 23 9．填料压盖（压板）螺栓强度校核·································································· 24 10．填料压盖（压板）弯曲应力校核································································ 25 10.1．填料压盖弯曲应力校核········································································ 25 10.2．填料压板弯曲应力校核········································································ 26 11．底盖螺栓强度校核+垫片宽度校核······························································ 27 12．轴承承载应力校核····················································································· 28
MPa
C
查《实用阀门设计手册》表5-79
mm
6 设计壁厚
TB
设计给定（≥MAX[T，TB']）
mm
7 GB/T 12224 标准壁厚
T'
查GB/T 1V/0!
备注：1、壁厚计算公式选自GB/T 12238-2008 P10式A.4，此式适用于塑形材料阀体；
2、表中标红的为计算数值，标绿的由设计者填写。
1.1×(P+P')D/2W
4 2.5≤PN≤25，200≤DN≤1500（球墨铸铁）
1.1×[(P+P')D/2W+8.5(1+D/3500)]
5 计算压力
P
设计给定
6 水锤压力
P'
设计给定
7 流道直径
D
查《实用阀门设计手册》表3-3
8 材料的许用拉应力
W
灰铸铁为400，球墨铸铁为900
10 设计壁厚 11 GB 26640 标准壁厚
蝶阀设计计算书
目录
1．阀体壁厚······································································································· 1 1.1．国标阀门阀体壁厚··················································································· 1 1.2．美标阀门阀体壁厚··················································································· 3