液压系统管路通径选择表
国家标准推荐流速
1.吸油管路: 1.2~1.3 m/s
2.回油管路 : 1.7~4.5 m/s
3.压力油管路: <25 bar 2.5~3 m/s，<50bar 3.5~4 m/s，<100bar 4.5~5 m/s，<200bar 5~6 m/s，>200bar 6~7.6 m/s
泵流量与推荐油管通径表(d²=21.22Q/v)
流量（L/min） | 吸油管 1.2-1.3m/s | 回油管 1.7-2.5m/s | ||
5 | 9.4 | 9.0 | 7.9 | 6.5 |
10 | 13.3 | 12.8 | 11.2 | 9.2 |
15 | 16.3 | 15.6 | 13.7 | 11.3 |
20 | 18.8 | 18.1 | 15.8 | 13.0 |
30 | 23.0 | 22.1 | 19.4 | 16.0 |
40 | 26.6 | 25.6 | 22.3 | 18.4 |
50 | 29.7 | 28.6 | 25.0 | 20.6 |
60 | 32.6 | 31.4 | 27.4 | 22.5 |
70 | 35.2 | 33.9 | 30.0 | 24.4 |
80 | 37.6 | 36.2 | 31.6 | 26.0 |
90 | 39.9 | 38.4 | 33.5 | 27.6 |
100 | 42.0 | 40.5 | 35.3 | 29.1 |
110 | 44.1 | 42.5 | 37.0 | 30.5 |
120 | 46.1 | 44.4 | 38.7 | 31.9 |
130 | 47.9 | 46.2 | 40.3 | 33.2 |
140 | 49.8 | 47.8 | 41.8 | 34.5 |
150 | 51.5 | 49.5 | 43.3 | 35.7 |
160 | 53.2 | 51.1 | 44.7 | 36.9 |
170 | 54.8 | 52.7 | 46.1 | 38.0 |
180 | 56.4 | 54.2 | 47.4 | 39.0 |
190 | 58.0 | 55.7 | 48.7 | 40.2 |
200 | 59.5 | 57.1 | 50.0 | 41.2 |
220 | 62.4 | 60.0 | 52.4 | 43.2 |
240 | 65.1 | 62.6 | 54.7 | 45.1 |
260 | 67.8 | 65.1 | 57.0 | 47.0 |
280 | 70.4 | 67.6 | 59.1 | 48.8 |
300 | 72.8 | 70.0 | 61.2 | 50.5 |
350 | 78.7 | 75.6 | 66.1 | 54.5 |
400 | 84.1 | 80.8 | 70.7 | 58.3 |
450 | 89.2 | 85.7 | 74.9 | 61.8 |
500 | 94.0 | 90.3 | 79.0 | 65.1 |
流量（L/min） | <25bar 2.5-3m/s | <50bar 3.5-4m/s | ||
5 | 6.5 | 6.0 | 5.5 | 5.2 |
10 | 9.2 | 8.4 | 7.8 | 7.3 |
15 | 11.3 | 10.3 | 9.5 | 8.9 |
20 | 13.0 | 11.9 | 11.0 | 10.3 |
30 | 16.0 | 14.6 | 13.5 | 12.6 |
40 | 18.4 | 16.8 | 15.6 | 14.6 |
50 | 20.6 | 18.8 | 17.4 | 16.3 |
60 | 22.5 | 20.6 | 19.1 | 17.9 |
70 | 24.4 | 22.3 | 20.6 | 19.3 |
80 | 26.0 | 23.8 | 22.0 | 20.6 |
90 | 27.6 | 25.3 | 23.4 | 21.9 |
100 | 29.1 | 26.6 | 24.6 | 23.1 |
110 | 30.5 | 27.9 | 25.8 | 24.2 |
120 | 31.9 | 29.2 | 27.0 | 25.3 |
130 | 33.2 | 30.4 | 28.1 | 26.3 |
140 | 34.5 | 31.5 | 29.1 | 27.3 |
150 | 35.7 | 32.6 | 30.2 | 28.2 |
160 | 36.9 | 33.6 | 31.1 | 29.1 |
170 | 38.0 | 34.6 | 32.1 | 30.0 |
180 | 39.0 | 35.7 | 33.0 | 30.9 |
190 | 40.2 | 36.7 | 33.9 | 31.7 |
200 | 41.2 | 37.6 | 34.8 | 32.6 |
220 | 43.2 | 39.4 | 36.5 | 34.2 |
240 | 45.1 | 41.2 | 38.1 | 35.7 |
260 | 47.0 | 42.9 | 39.7 | 37.1 |
280 | 48.8 | 44.5 | 41.2 | 38.5 |
300 | 50.5 | 46.1 | 42.6 | 39.9 |
350 | 54.5 | 49.8 | 46.1 | 43.1 |
400 | 58.3 | 53.2 | 49.2 | 46.1 |
450 | 61.8 | 56.4 | 52.2 | 48.9 |
500 | 65.1 | 59.5 | 55.1 | 51.5 |
流量（L/min） | <100bar 4.5-5m/s | <200bar 5-6m/s | ||
5 | 4.8 | 4.6 | 4.6 | 4.2 |
10 | 6.9 | 6.5 | 6.5 | 6.0 |
15 | 8.4 | 8.0 | 8.0 | 7.3 |
20 | 9.7 | 9.2 | 9.2 | 8.4 |
30 | 11.9 | 11.3 | 11.3 | 10.3 |
40 | 13.7 | 13.0 | 13.0 | 11.9 |
50 | 15.4 | 14.6 | 14.6 | 13.3 |
60 | 16.8 | 16.0 | 16.0 | 14.6 |
70 | 18.2 | 17.2 | 17.2 | 15.7 |
80 | 19.4 | 18.4 | 18.4 | 16.8 |
90 | 20.6 | 19.5 | 19.5 | 17.8 |
100 | 21.7 | 20.6 | 20.6 | 18.8 |
110 | 22.8 | 21.6 | 21.6 | 19.7 |
120 | 23.8 | 22.6 | 22.6 | 20.6 |
130 | 24.8 | 23.5 | 23.5 | 21.4 |
140 | 25.7 | 24.4 | 24.4 | 22.3 |
150 | 26.6 | 25.2 | 25.2 | 23.0 |
160 | 27.5 | 26.0 | 26.0 | 23.8 |
170 | 28.3 | 26.9 | 26.9 | 24.5 |
180 | 29.1 | 27.6 | 27.6 | 25.2 |
190 | 29.9 | 28.4 | 28.4 | 25.9 |
200 | 30.7 | 29.1 | 29.1 | 26.6 |
220 | 32.2 | 30.6 | 30.6 | 27.9 |
240 | 33.6 | 31.9 | 31.9 | 29.1 |
260 | 35.0 | 33.2 | 33.2 | 30.3 |
280 | 36.3 | 34.5 | 34.5 | 31.5 |
300 | 37.6 | 35.7 | 35.7 | 32.6 |
350 | 40.6 | 38.5 | 38.5 | 35.2 |
400 | 43.4 | 41.2 | 41.2 | 37.6 |
450 | 46.1 | 43.7 | 43.7 | 39.9 |
500 | 48.6 | 46.1 | 46.1 | 42.0 |
流量（L/min） | >200bar 6-7.6m/s | |
5 | 4.2 | 3.7 |
10 | 6.0 | 5.3 |
15 | 7.3 | 6.5 |
20 | 8.4 | 7.5 |
30 | 10.3 | 9.2 |
40 | 11.9 | 10.6 |
50 | 13.3 | 11.8 |
60 | 14.6 | 12.9 |
70 | 15.7 | 14.0 |
80 | 16.8 | 14.9 |
90 | 17.8 | 15.9 |
100 | 18.8 | 16.7 |
110 | 19.7 | 17.5 |
120 | 20.6 | 18.3 |
130 | 21.4 | 19.0 |
140 | 22.3 | 19.8 |
150 | 23.0 | 20.5 |
160 | 23.8 | 21.1 |
170 | 24.5 | 21.8 |
180 | 25.2 | 22.4 |
190 | 25.9 | 23.0 |
200 | 26.6 | 23.6 |
220 | 27.9 | 24.8 |
240 | 29.1 | 25.9 |
260 | 30.3 | 26.9 |
280 | 31.5 | 28.0 |
300 | 32.6 | 28.9 |
350 | 35.2 | 31.3 |
400 | 37.6 | 33.4 |
450 | 39.9 | 35.4 |
500 | 42.0 | 37.4 |
