计算选型
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流量转换表 |
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标准额定流量Qn是指转换成标准状态(1.013bar，0℃时)下的额定流量，单位为L/min。所谓的额定流量，是指上游绝对压力为7bar、下游绝对压力为6bar、介质温度为20℃(已转换成标准状态)时测得的样机的入口流量。标准额定流量可以转换成美国常用的Kv和Cv流量系数。见表美国、欧洲、日本、德国对“阀开关时间测试”的比较 |
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|
Qn/L·min-1 |
Cv |
Kv |
Qn/L·min-1 |
Cv |
Kv |
Qn/L·min-1 |
Cv |
Kv |
|
10 |
0.010 |
0.009 |
10 |
0.01 |
0.009 |
11 |
0.011 |
0.01 |
|
20 |
0.020 |
0.018 |
20 |
0.02 |
0.018 |
22 |
0.022 |
0.02 |
|
30 |
0.030 |
0.027 |
30 |
0.03 |
0.027 |
33 |
0.034 |
0.03 |
|
40 |
0.041 |
0.036 |
39 |
0.04 |
0.036 |
44 |
0.045 |
0.04 |
|
50 |
0.051 |
0.045 |
49 |
0.05 |
0.045 |
55 |
0.056 |
0.05 |
|
60 |
0.061 |
0.055 |
59 |
0.06 |
0.054 |
66 |
0.067 |
0.06 |
|
70 |
0.071 |
0.064 |
69 |
0.07 |
0.062 |
77 |
0.078 |
0.07 |
|
80 |
0.081 |
0.073 |
79 |
0.08 |
0.071 |
88 |
0.090 |
0.08 |
|
90 |
0.091 |
0.082 |
89 |
0.09 |
0.080 |
99 |
0.101 |
0.09 |
|
100 |
0.102 |
0.091 |
98 |
0.10 |
0.089 |
110 |
0.112 |
0.10 |
|
200 |
0.203 |
0.182 |
197 |
0.20 |
0.179 |
220 |
0.224 |
0.20 |
|
300 |
0.305 |
0.273 |
295 |
0.30 |
0.268 |
330 |
0.336 |
0.30 |
|
400 |
0.407 |
0.364 |
394 |
0.40 |
0.357 |
440 |
0.448 |
0.40 |
|
500 |
0.508 |
0.455 |
492 |
0.50 |
0.446 |
550 |
0.560 |
0.50 |
|
600 |
0.610 |
0.545 |
590 |
0.60 |
0.536 |
660 |
0.672 |
0.60 |
|
700 |
0.711 |
0.636 |
689 |
0.70 |
0.625 |
770 |
0.784 |
0.70 |
|
800 |
0.813 |
0.727 |
787 |
0.80 |
0.714 |
880 |
0.896 |
0.80 |
|
900 |
0.915 |
0.818 |
886 |
0.90 |
0.804 |
990 |
1.008 |
0.90 |
|
1000 |
1.016 |
0.909 |
984 |
1.00 |
0.893 |
1100 |
1.120 |
1.00 |
|
2000 |
2.033 |
1.818 |
1968 |
2.00 |
1.786 |
2200 |
2.240 |
2.00 |
|
3000 |
3.049 |
2.727 |
2952 |
3.00 |
2.679 |
3300 |
3.360 |
3.00 |
|
4000 |
4.065 |
3.636 |
3936 |
4.00 |
3.571 |
4400 |
4.480 |
4.00 |
|
5000 |
5.081 |
4.545 |
4920 |
5.00 |
4.464 |
5500 |
5.600 |
5.00 |
|
6000 |
6.098 |
5.455 |
5904 |
6.00 |
5.357 |
6600 |
6.720 |
6.00 |
|
7000 |
7.114 |
6.364 |
6888 |
7.00 |
6.250 |
7700 |
7.840 |
7.00 |
|
8000 |
8.130 |
7.273 |
7872 |
8.00 |
7.143 |
8800 |
8.960 |
8.00 |
|
9000 |
9.146 |
8.182 |
8856 |
9.00 |
8.036 |
9900 |
10.080 |
9.00 |
|
10000 |
10.163 |
9.091 |
9840 |
10.00 |
8.929 |
11000 |
11.200 |
10.00 |
|
20000 |
20.325 |
18.182 |
19680 |
20.00 |
17.857 |
22000 |
22.400 |
20.00 |
|
30000 |
30.488 |
27.273 |
29520 |
30.00 |
26.786 |
33000 |
33.600 |
30.00 |
