流速 m/sec 锐角弯头 圆滑弯头 标准闸阀 底阀 止回阀 a=30 a=40 a=60 a=80 a=90 d/R=0.4 d/R=0.6 d/R=0.8 d/R=1 d/R=1.5 0.10 0.03 0.04 0.05 0.07 0.08 0.007 0.008 0.01 0.0155 0.027 0.030 30 30 0.15 0.06 0.07
弯头、阀门和闸阀的流动阻力(CM水柱)
流速
m/sec
|
锐角弯头
|
圆滑弯头
|
标准闸阀 |
底阀 |
止回阀 |
a=30 |
a=40 |
a=60 |
a=80 |
a=90 |
d/R=0.4 |
d/R=0.6 |
d/R=0.8 |
d/R=1 |
d/R=1.5 |
0.10 |
0.03 |
0.04 |
0.05 |
0.07 |
0.08 |
0.007 |
0.008 |
0.01 |
0.0155 |
0.027 |
0.030 |
30 |
30 |
0.15 |
0.06 |
0.07 |
0.10 |
0.14 |
0.17 |
0.016 |
0.019 |
0.024 |
0.033 |
0.06 |
0.033 |
31 |
31 |
0.2 |
0.11 |
0.13 |
0.18 |
0.26 |
0.31 |
0.028 |
0.033 |
0.04 |
0.058 |
0.11 |
0.058 |
31 |
31 |
0.25 |
0.17 |
0.21 |
0.28 |
0.4 |
0.48 |
0.044 |
0.052 |
0.063 |
0.091 |
0.17 |
0.090 |
31 |
31 |
0.3 |
0.25 |
0.30 |
0.41 |
0.6 |
0.7 |
0.063 |
0.074 |
0.09 |
0.13 |
0.25 |
0.13 |
31 |
31 |
0.35 |
0.33 |
0.40 |
0.54 |
0.8 |
0.93 |
0.085 |
0.10 |
0.12 |
0.18 |
0.33 |
0.18 |
31 |
31 |
0.4 |
0.43 |
0.52 |
0.71 |
1.0 |
1.2 |
0.11 |
0.13 |
0.16 |
0.23 |
0.43 |
0.23 |
32 |
31 |
0.5 |
0.67 |
0.81 |
1.1 |
1.6 |
1.9 |
0.18 |
0.21 |
0.26 |
0.37 |
0.67 |
0.37 |
33 |
32 |
0.6 |
0.97 |
1.2 |
1.6 |
2.3 |
2.8 |
0.25 |
0.29 |
0.36 |
0.52 |
0.97 |
0.52 |
34 |
32 |
0.7 |
1.35 |
1.65 |
2.2 |
3.2 |
3.9 |
0.34 |
0.40 |
0.48 |
0.70 |
1.35 |
0.70 |
35 |
32 |
0.8 |
1.7 |
2.1 |
2.8 |
4.0 |
4.8 |
0.45 |
0.53 |
0.64 |
0.93 |
1.7 |
0.95 |
36 |
33 |
0.9 |
2.2 |
2.7 |
3.6 |
5.2 |
6.2 |
0.57 |
0.67 |
0.82 |
1.18 |
2.2 |
1.20 |
37 |
34 |
1.0 |
2.7 |
3.3 |
4.5 |
6.4 |
7.6 |
0.7 |
0.82 |
1.0 |
1.45 |
2.7 |
1.45 |
38 |
35 |
1.5 |
6.0 |
7.3 |
10 |
14 |
17 |
1.6 |
1.9 |
2.3 |
3.3 |
6 |
3.3 |
47 |
40 |
2.0 |
11 |
14 |
18 |
26 |
31 |
2.8 |
3.2 |
4.0 |
5.8 |
11 |
5.8 |
61 |
48 |
2.5 |
17 |
21 |
28 |
40 |
48 |
4.4 |
5.2 |
6.3 |
9.1 |
17 |
9.1 |
78 |
58 |
3.0 |
25 |
30 |
41 |
60 |
70 |
6.3 |
7.4 |
9 |
13 |
25 |
13 |
100 |
71 |
3.5 |
33 |
40 |
55 |
78 |
93 |
8.5 |
10 |
12 |
18 |
33 |
18 |
123 |
85 |
4.0 |
43 |
52 |
70 |
100 |
120 |
11 |
13 |
16 |
23 |
42 |
23 |
150 |
100 |
4.5 |
55 |
67 |
90 |
130 |
160 |
14 |
21 |
26 |
37 |
55 |
37 |
190 |
120 |
5.0 |
67 |
82 |
110 |
160 |
190 |
18 |
29 |
36 |
52 |
67 |
52 |
220 |
140 |
1) 弯头中的流动阻力是由于方向的改变导致流线的收缩引起的。
2) 阀门和闸阀的流动阻力值根据实际的测试结果而定。
|