|
 |
| |
| |
|
 |
| 管径（mm） |
25 |
38 |
50 |
65 |
75 |
100 |
125 |
150 |
175 |
200 |
250 |
300 |
| 流量（L/S） |
1 |
3.27 |
3.5 |
0.8 |
|
|
|
|
|
|
|
|
|
| 2 |
13.0 |
14 |
3.1 |
0.8 |
0.4 |
|
|
|
|
|
|
|
| 4 |
|
55 |
13 |
3.2 |
1.6 |
0.4 |
|
|
|
|
|
|
| 6 |
|
|
29 |
7.1 |
3.3 |
0.8 |
0.23 |
|
|
|
|
|
| 8 |
|
|
|
13 |
5.9 |
1.3 |
0.4 |
0.16 |
|
|
|
|
| 10 |
|
|
|
20 |
9.6 |
2.1 |
0.63 |
0.26 |
0.11 |
|
|
|
| |
|
15 |
|
|
21.6 |
6.8 |
1.3 |
0.58 |
0.27 |
0.13 |
|
|
| |
|
20 |
|
|
|
8.6 |
2.7 |
1.1 |
0.5 |
0.26 |
0.07 |
|
| |
|
|
25 |
|
|
13 |
4.1 |
1.6 |
0.74 |
0.37 |
0.12 |
|
| |
|
|
30 |
|
|
19.4 |
5.9 |
2.3 |
1.05 |
0.53 |
0.18 |
0.07 |
| |
|
|
|
40 |
|
|
10.7 |
4.2 |
1.9 |
0.93 |
0.30 |
0.12 |
| |
|
|
|
50 |
|
|
|
6.4 |
2.9 |
1.5 |
0.48 |
0.19 |
| |
|
|
|
|
60 |
|
|
9.4 |
4.3 |
2.1 |
0.68 |
0.27 |
| |
|
|
|
|
70 |
|
|
|
5.8 |
2.9 |
0.93 |
0.37 |
| |
|
|
|
|
|
80 |
|
|
7.7 |
3.7 |
1.2 |
0.49 |
| |
|
|
|
|
|
90 |
|
|
9.6 |
4.7 |
1.5 |
0.6 |
|
|
|
|
|
|
|
100 |
|
|
6.1 |
1.9 |
0.76 |
| |
|
|
|
|
|
|
110 |
|
|
7.2 |
2.3 |
0.9 |
| |
|
|
|
|
|
|
|
120 |
|
8.5 |
2.8 |
1.1 |
| |
|
|
|
|
|
|
|
130 |
|
|
3.3 |
1.3 |
直管摩擦损失表（供估计用）
管100m直管损失米数
（以新铸管为标准，旧管加倍） |
140 |
|
3.7 |
1.5 |
| 160 |
|
4.9 |
2.0 |
| |
180 |
5.2 |
2.4 |
| |
200 |
|
3.0 |
|
| |
阀及弯管折合直管长度（每个） |
种类 |
折合直管直径倍数 |
备注 |
全开闸阀 |
12 |
未畅开加倍 |
标准弯管 |
25 |
|
逆止阀 |
100 |
|
底阀 |
100 |
部分堵塞加倍 |
|
| |
一定管路直径之最大流量限制 |
管路直径（mm） |
最大流量（L/S） |
最大流速（m/s） |
管路直径（mm） |
最大流量（L/S） |
最大流速（m/s） |
25 |
1 |
2.04 |
125 |
30.0 |
2.44 |
38 |
2.5 |
1.69 |
150 |
43.0 |
2.45 |
50 |
4.17 |
2.12 |
175 |
60.0 |
2.49 |
65 |
6.67 |
2.01 |
200 |
83.3 |
2.69 |
75 |
10.0 |
2.26 |
250 |
133.3 |
2.72 |
100 |
18.4 |
2.33 |
300 |
192.0 |
2.71 |
|
|
| |
| |
|
| |
|
|
|
|
