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水的壓縮率通常用于在試壓泵選型時幫助計(jì)算打壓的時間,以便技術(shù)人員給用戶提供最佳的產(chǎn)品選型。
水的壓縮率βt(20℃ )
壓力 |
壓縮率 |
壓力 |
壓縮率 |
||
MPa |
Kgf/cm2 |
MPa |
Kgf/cm2 |
||
1.437 |
14.08 |
0.000612 |
57.490 |
563.4 |
0.022400 |
2.874 |
28.17 |
0.001220 |
64.673 |
633.8 |
0.025020 |
4.311 |
42.25 |
0.001830 |
71.857 |
704.2 |
0.027600 |
5.749 |
56.34 |
0.002432 |
79.041 |
774.6 |
0.030250 |
7.186 |
70.42 |
0.003030 |
86.235 |
845.1 |
0.032760 |
8.623 |
84.51 |
0.003624 |
93.418 |
915.5 |
0.035230 |
10.060 |
98.59 |
0.004214 |
100.602 |
985.9 |
0.037800 |
11.500 |
112.7 |
0.004800 |
107.755 |
1056 |
0.040350 |
12.939 |
126.8 |
0.005382 |
115.000 |
1127 |
0.042720 |
14.367 |
140.8 |
0.005980 |
122.143 |
1197 |
0.045220 |
15.806 |
154.9 |
0.006556 |
129.388 |
1268 |
0.047700 |
17.245 |
169.0 |
0.007128 |
136.531 |
1338 |
0.050160 |
18.684 |
183.1 |
0.007696 |
143.673 |
1408 |
0.052600 |
20.122 |
197.2 |
0.008260 |
150.918 |
1479 |
0.055020 |
21.561 |
211.3 |
0.008820 |
158.061 |
1549 |
0.057420 |
23.000 |
225.4 |
0.009408 |
165.306 |
1620 |
0.059570 |
24.429 |
239.4 |
0.009962 |
172.449 |
1690 |
0.061920 |
25.867 |
253.5 |
0.010512 |
179.694 |
1761 |
0.064250 |
27.306 |
267.6 |
0.011058 |
186.837 |
1831 |
0.066560 |
28.745 |
281.7 |
0.011600 |
193.980 |
1901 |
0.068850 |
30.184 |
295.8 |
0.012180 |
201.224 |
1972 |
0.071400 |
31.622 |
309.9 |
0.012716 |
208.367 |
2042 |
0.073660 |
33051 |
323.9 |
0.013248 |
215.612 |
2113 |
0.075900 |
34.490 |
338.0 |
0.013776 |
222.755 |
2183 |
0.078120 |
35.929 |
352.1 |
0.014350 |
230.000 |
2254 |
0.080320 |
37.367 |
366.2 |
0.014820 |
237.143 |
2324 |
0.082500 |
38.806 |
380.3 |
0.015390 |
244.286 |
2394 |
0.084660 |
43.112 |
422.5 |
0.017040 |
251.531 |
2465 |
0.087150 |
50.306 |
493.0 |
0.019740 |
258.673 |
2535 |
0.089280 |
1、20℃時水的壓縮率也可以按如下公式計(jì)算:
βt=(4654-6.8Ph)×Ph×10-7 βt—壓縮率;Ph—絕對壓力(MPa)
2、容器壓縮進(jìn)水量精確計(jì)算:
ΔQ=Vβt/(1-βt) ΔQ—壓縮進(jìn)水量;V—容器容積
3、容器壓縮進(jìn)水估算:
ΔQ=Vβt
4、容器實(shí)際進(jìn)水量計(jì)算還應(yīng)考慮容器及管線受壓變形,其變形率η可根據(jù)實(shí)際情況在0.1%~3%之間選取
5、容器實(shí)際總壓縮水量計(jì)算:
Q總=ΔQ+Vη