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
|
|
|
一定管路直径之流量限制
|
管路直径
(mm)
|
流量
(L/S)
|
流速
(m/s)
|
管路直径
(mm)
|
流量
(L/S)
|
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
|
|