不锈钢接头、阀门壳体尺寸
发布时间:
2026-06-18
不锈钢接头、阀门壳体尺寸
工况:1,材料为304不锈钢圆棒、冷拉型钢或锻件;2,壳体内充满流体,压力为P;3,壳体外表为圆型。

1,拉力F=PπD2²/4
2,螺纹有效旋合长度(不含倒角)L=1+F/(πD4[τ]×0.35) (L≥3*牙距)
L2=1+F/(πD5[τ]×0.35) (L2≥3*牙距)
3,最佳螺纹螺距P=L/5~L/9
4,中段壳体壁厚S1:根据压力P和内径D1参考钢管耐压壁厚选择
(详见P333页)压力P≤160bar时,最小壁厚按P=160bar选,
以确保外力作用下的安全性
5,端部壳体壁厚S2:S2=1.35×S1(圆形外壳)
6,相同压力下方管或六角管的最小壁厚比圆管最小壁厚小
| P(MPa) |
壳体与接头内流体压力 |
|
F(N) |
流体压力产生的壳体与接头拉力 |
|
D1~D6(mm) |
内径和外径 |
|
D4、D5(mm) |
连接螺纹中径 |
|
L、L2(mm) |
螺纹有效旋合长度(不含倒角) |
|
S1~S3(mm) |
壁厚 |
|
A(mm) |
台阶压紧宽度 |
|
B(mm) |
台阶厚度 |
|
C(mm) |
螺母压紧厚度 |
|
[σL](MPa) |
许用拉应力(详见阀门材料性能资料) |
|
[σy](MPa) |
许用压应力(详见阀门材料性能资料) |
|
[τ](MPa) |
许用剪切应力(详见阀门材料性能资料) |

| K=A/D |
K=1.2~1.4 |
方管和六角管 |
|
|
方管 |
六角管 |
||
|
壁厚比S4/S2= |
0.8 |
0.9 |
|
7,螺纹退刀槽壁厚S3:参考壳体尺寸表
8,计算台阶压紧宽度A,台阶挤压应力σy=F/挤压面积≤0.8×[σy]
4F/(π(D6-0.5)²-πD3²)≤0.8×[σy](0.5mm为安全冗余) A=(D6-D3)/2
9,计算台阶厚度B(B最小值为3.5mm),台阶剪切应力τ=F/剪切面积≤0.6×[τ]
F/(πD3×(B-0.5))≤0.6×[τ](0.5mm为安全冗余)
10,计算螺母压紧厚度C,抗弯截面模量W=πD5(C-0.5)²/6(0.5mm为安全冗余),弯矩M=F×(D7-D3)/2,M/W≤[σL]
壳体尺寸表(单位:mm)
| M |
M2 |
中低压P≤160bar (压力≥120bar时采用铸件表中壁厚需加大20%) |
|||||||||||
|
F(N) |
D1 |
D2 |
D3 |
S1≥ |
S2≥ |
S3≥ |
L≥ |
L2≥ |
A≥ |
B≥ |
C≥ |
||
|
M18*1.5 |
M24*1.5 |
4299 |
16 |
18.5 |
18.4 |
1.2 |
1.6 |
2.2 |
4.5 |
4.5 |
1.1 |
3.5 |
2.9 |
|
M20*1.5 |
M26*1.5 |
5278 |
18 |
20.5 |
20.6 |
1.3 |
1.8 |
2.3 |
4.5 |
4.5 |
1.2 |
3.5 |
3.1 |
|
M22*1.5 |
M28*1.5 |
6359 |
20 |
22.5 |
23.0 |
1.5 |
2 |
2.6 |
4.5 |
4.5 |
1.2 |
3.5 |
3.3 |
|
M24*1.5 |
M30*1.5 |
7539 |
22 |
24.5 |
25.2 |
1.6 |
2.2 |
2.6 |
4.8 |
4.5 |
1.3 |
3.5 |
3.5 |
|
M26*1.5 |
M33*2.0 |
8820 |
24 |
26.5 |
27.6 |
1.8 |
2.4 |
2.7 |
5.1 |
4.5 |
1.3 |
3.5 |
3.7 |
|
M27*2.0 |
M33*2.0 |
9499 |
24 |
27.5 |
27.6 |
1.8 |
2.4 |
2.7 |
6.0 |
6.0 |
1.4 |
3.5 |
3.9 |
|
M30*2.0 |
M36*2.0 |
11684 |
27 |
30.5 |
31.0 |
2.0 |
2.7 |
3.0 |
6.0 |
6.0 |
1.5 |
3.5 |
4.2 |
|
M33*2.0 |
M40*2.0 |
14095 |
30 |
33.5 |
34.4 |
2.2 |
3 |
3.2 |
6.2 |
6.0 |
1.5 |
3.5 |
4.4 |
|
M36*2.0 |
M45*2.0 |
16733 |
33 |
36.5 |
37.8 |
2.4 |
3.2 |
3.4 |
6.6 |
6.0 |
1.6 |
3.5 |
4.7 |
|
M39*2.0 |
M48*2.0 |
19597 |
36 |
39.5 |
41.4 |
2.7 |
3.6 |
3.6 |
7.1 |
6.0 |
1.7 |
3.7 |
4.9 |
|
M42*2.0 |
M52*2.0 |
22687 |
39 |
42.5 |
44.8 |
2.9 |
3.9 |
3.8 |
7.5 |
6.2 |
1.8 |
4.0 |
5.2 |
|
M45*2.0 |
M55*2.0 |
26002 |
42 |
45.5 |
48.2 |
3.1 |
4.2 |
4.0 |
7.9 |
6.6 |
1.9 |
4.2 |
5.5 |
|
M48*2.0 |
M58*2.0 |
29544 |
45 |
48.5 |
51.6 |
3.3 |
4.5 |
4.1 |
8.4 |
7.1 |
2.0 |
4.4 |
5.8 |
|
M52*2.0 |
M64*2.0 |
34619 |
49 |
52.5 |
56.2 |
3.6 |
4.9 |
4.4 |
9.0 |
7.4 |
2.1 |
4.7 |
6.1 |
|
M56*2.0 |
M68*2.0 |
40095 |
53 |
56.5 |
60.8 |
3.9 |
5.3 |
4.7 |
9.6 |
8.0 |
2.2 |
5.0 |
6.5 |
|
M60*2.0 |
M75*2.0 |
45973 |
57 |
60.5 |
65.4 |
4.2 |
5.7 |
5.0 |
10.1 |
8.3 |
2.3 |
5.3 |
6.9 |
|
M64*2.0 |
M78*2.0 |
52253 |
61 |
64.5 |
70.0 |
4.5 |
6.1 |
5.4 |
10.7 |
8.9 |
2.4 |
5.6 |
7.4 |
|
M68*2.0 |
M85*3.0 |
58935 |
65 |
68.5 |
74.6 |
4.8 |
6.5 |
5.7 |
11.3 |
9.3 |
2.5 |
5.9 |
7.9 |
|
M72*3.0 |
M90*3.0 |
66019 |
68 |
72.5 |
78.0 |
5.0 |
6.8 |
6.0 |
12.0 |
9.8 |
2.7 |
6.3 |
8.4 |
|
M76*3.0 |
M95*3.0 |
73504 |
72 |
76.5 |
82.8 |
5.4 |
7.3 |
6.4 |
12.6 |
10.2 |
2.8 |
6.6 |
9.0 |

壳体尺寸表(单位:mm)
|
M |
M2 |
高压P=250bar |
|||||||||||
|
F(N) |
D1 |
D2 |
D3 |
S1≥ |
S2≥ |
S3≥ |
L≥ |
L2≥ |
A≥ |
B≥ |
C≥ |
||
|
M18*1.5 |
M25*1.5 |
6717 |
16 |
18.5 |
20.0 |
2.0 |
2.7 |
2.2 |
5.6 |
4.5 |
1.4 |
3.5 |
3.8 |
|
M20*1.5 |
M28*1.5 |
8247 |
18 |
20.5 |
22.6 |
2.3 |
3.1 |
2.5 |
6.1 |
4.6 |
1.4 |
3.5 |
4.0 |
|
M22*1.5 |
M30*1.5 |
9935 |
20 |
22.5 |
25.0 |
2.5 |
3.4 |
2.6 |
6.5 |
5.0 |
1.5 |
3.5 |
4.2 |
|
M24*1.5 |
M33*2.0 |
11780 |
22 |
24.5 |
27.6 |
2.8 |
3.8 |
2.6 |
7.0 |
5.3 |
1.6 |
3.5 |
4.5 |
|
M26*1.5 |
M36*2.0 |
13782 |
24 |
26.5 |
30.0 |
3.0 |
4.1 |
2.7 |
7.4 |
5.6 |
1.7 |
3.6 |
4.8 |
|
M27*2.0 |
M36*2.0 |
14841 |
24 |
27.5 |
30.0 |
3.0 |
4.1 |
2.7 |
7.7 |
6.0 |
1.8 |
3.9 |
5.2 |
|
M30*2.0 |
M40*2.0 |
18256 |
27 |
30.5 |
33.8 |
3.4 |
4.6 |
3.0 |
8.4 |
6.5 |
1.9 |
4.2 |
5.5 |
|
M33*2.0 |
M45*2.0 |
22024 |
30 |
33.5 |
37.6 |
3.8 |
5.1 |
3.2 |
9.1 |
6.9 |
2.0 |
4.5 |
5.9 |
|
M36*2.0 |
M48*2.0 |
26145 |
33 |
36.5 |
41.2 |
4.1 |
5.5 |
3.4 |
9.8 |
7.5 |
2.1 |
4.8 |
6.3 |
|
M39*2.0 |
M52*2.0 |
30620 |
36 |
39.5 |
45.0 |
4.5 |
6.1 |
3.6 |
10.5 |
8.0 |
2.2 |
5.1 |
6.7 |
|
M42*2.0 |
M56*2.0 |
35448 |
39 |
42.5 |
48.8 |
4.9 |
6.6 |
3.9 |
11.2 |
8.6 |
2.4 |
5.5 |
7.1 |
|
M45*2.0 |
M60*2.0 |
40629 |
42 |
45.5 |
52.4 |
5.2 |
7.0 |
4.2 |
11.8 |
9.1 |
2.5 |
5.8 |
7.6 |
|
M48*2.0 |
M64*2.0 |
46163 |
45 |
48.5 |
56.2 |
5.6 |
7.6 |
4.5 |
12.5 |
9.6 |
2.6 |
6.1 |
8.0 |
|
M52*2.0 |
M70*2.0 |
54091 |
49 |
52.5 |
61.2 |
6.1 |
8.2 |
4.9 |
13.4 |
10.2 |
2.8 |
6.5 |
8.5 |
|
M56*2.0 |
M75*2.0 |
62648 |
53 |
56.5 |
66.2 |
6.6 |
8.9 |
5.3 |
14.4 |
10.9 |
2.9 |
7.0 |
9.0 |
|
M60*2.0 |
M80*2.0 |
71832 |
57 |
60.5 |
71.2 |
7.1 |
9.6 |
5.7 |
15.3 |
11.6 |
3.1 |
7.4 |
9.7 |
|
M64*2.0 |
M90*3.0 |
81645 |
61 |
64.5 |
76.2 |
7.6 |
10.3 |
6.1 |
16.2 |
11.8 |
3.2 |
7.8 |
10.6 |
|
M68*2.0 |
M95*3.0 |
92085 |
65 |
68.5 |
81.2 |
8.1 |
10.9 |
6.5 |
17.1 |
12.6 |
3.4 |
8.2 |
11.4 |
|
M72*3.0 |
M100*3.0 |
103154 |
68 |
72.5 |
85.0 |
8.5 |
11.5 |
6.8 |
18.2 |
13.3 |
3.6 |
8.8 |
12.1 |
|
M76*3.0 |
M105*3.0 |
114850 |
72 |
76.5 |
90.0 |
9.0 |
12.2 |
7.2 |
19.1 |
14.0 |
3.8 |
9.2 |
12.7 |
壳体尺寸表(单位:mm)
|
M |
M2 |
高压P=400bar |
|||||||||||
|
F(N) |
D1 |
D2 |
D3 |
S1≥ |
S2≥ |
S3≥ |
L≥ |
L2≥ |
A≥ |
B≥ |
C≥ |
||
|
M18*1.5 |
M30*1.5 |
10747 |
16 |
18.5 |
24.6 |
4.3 |
5.8 |
2.7 |
8.4 |
5.3 |
1.6 |
3.5 |
4.6 |
|
M20*1.5 |
M34*2.0 |
13196 |
18 |
20.5 |
27.6 |
4.8 |
6.5 |
3.1 |
9.1 |
5.7 |
1.7 |
3.8 |
4.9 |
|
M22*1.5 |
M38*2.0 |
15896 |
20 |
22.5 |
30.6 |
5.3 |
7.2 |
3.4 |
9.8 |
6.1 |
1.8 |
4.0 |
5.2 |
|
M24*1.5 |
M40*2.0 |
18848 |
22 |
24.5 |
33.6 |
5.8 |
7.8 |
3.7 |
10.5 |
6.7 |
1.9 |
4.3 |
5.6 |
|
M26*1.5 |
M45*2.0 |
22051 |
24 |
26.5 |
36.8 |
6.4 |
8.6 |
4.1 |
11.3 |
6.9 |
2.0 |
4.6 |
6.0 |
|
M27*2.0 |
M45*2.0 |
23746 |
24 |
27.5 |
36.8 |
6.4 |
8.6 |
4.1 |
11.8 |
7.3 |
2.1 |
4.9 |
6.4 |
|
M30*2.0 |
M48*2.0 |
29210 |
27 |
30.5 |
41.4 |
7.2 |
9.7 |
4.6 |
12.9 |
8.3 |
2.3 |
5.3 |
6.8 |
|
M33*2.0 |
M55*2.0 |
35239 |
30 |
33.5 |
46.0 |
8.0 |
10.8 |
5.1 |
14.0 |
8.7 |
2.5 |
5.7 |
7.4 |
|
M36*2.0 |
M60*2.0 |
41833 |
33 |
36.5 |
50.6 |
8.8 |
11.9 |
5.6 |
15.1 |
9.3 |
2.6 |
6.1 |
8.0 |
|
M39*2.0 |
M64*2.0 |
48992 |
36 |
39.5 |
55.2 |
9.6 |
13.0 |
6.1 |
16.2 |
10.1 |
2.8 |
6.6 |
8.6 |
|
M42*2.0 |
M68*2.0 |
56716 |
39 |
42.5 |
59.8 |
10.4 |
14.0 |
6.6 |
17.3 |
10.9 |
2.9 |
7.0 |
9.1 |
|
M45*2.0 |
M72*2.0 |
65006 |
42 |
45.5 |
64.4 |
11.2 |
15.1 |
7.2 |
18.4 |
11.7 |
3.1 |
7.4 |
9.8 |
|
M48*2.0 |
M78*2.0 |
73861 |
45 |
48.5 |
69.0 |
12.0 |
16.2 |
7.7 |
19.5 |
12.2 |
3.2 |
7.8 |
10.6 |
|
M52*2.0 |
M85*2.0 |
86546 |
49 |
52.5 |
75.0 |
13.0 |
17.6 |
8.3 |
20.9 |
13.1 |
3.4 |
8.4 |
11.4 |
|
M56*2.0 |
M95*2.0 |
100237 |
53 |
56.5 |
81.2 |
14.1 |
19.0 |
9.0 |
22.4 |
13.6 |
3.7 |
8.9 |
12.3 |
|
M60*3.0 |
M100*3.0 |
114932 |
56 |
60.5 |
85.8 |
14.9 |
20.1 |
9.7 |
24.1 |
14.7 |
3.9 |
9.6 |
13.2 |
|
M64*3.0 |
M105*3.0 |
130632 |
60 |
64.5 |
92.0 |
16.0 |
21.6 |
10.4 |
25.5 |
15.8 |
4.1 |
10.2 |
13.9 |
|
M68*3.0 |
M110*3.0 |
147337 |
64 |
68.5 |
98.0 |
17.0 |
23.0 |
11.0 |
27.0 |
16.9 |
4.3 |
10.8 |
14.6 |
|
M72*3.0 |
M120*3.0 |
165046 |
68 |
72.5 |
104.2 |
18.1 |
24.4 |
11.6 |
28.5 |
17.3 |
4.5 |
11.3 |
15.4 |
|
M76*3.0 |
M125*3.0 |
183761 |
72 |
76.5 |
110.4 |
19.2 |
25.9 |
12.2 |
29.9 |
18.4 |
4.7 |
11.8 |
16.1 |
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