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首页Home>美国尼伯科公司 Nibco Inc>铜管件Copper Fittings > 正文Text |
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第47页 Page 47 |
膨胀与收缩 Expansion and Contraction |
![]() 美国尼伯科有限公司 |
小型私人住宅内采用铜管的低压供暖系统中,大多数针对膨胀和压缩的装置都相对简单。连接到散热器的主管、升管和分支,在管道的一端应该能够活动自如或能够浮动。安装孔应该足够大以便于管道的自由活动,操作要小心使得管道吊钩和支撑容许无限制活动,且不会将管道固定住。可提供实用且美观的锻造铜管吊钩。 In the majority of low-pressure heating systems employing copper tube and installed in small houses or private dwellings, provision for expansion and contraction is relatively simple. Mains, risers, and branches to radiators should be free or floating at one end of line. Holes should be large enough to permit free movement of the tube, and care should be exercised so that pipe hangers and supports permit unrestricted movement and do not anchor the tube. Wrought copper tube hangers that are both practicable and neat in appearance are available. 如果铜管管线非常长,则应该配置膨胀曲线或环形回路。通过弯曲回火软处理铜管,可以制作一个简单的膨胀循环回路。将组合扩口管道连接到焊料连接管件上,如图1所示,这些类型的循环回路可以用在存在空间或其他限制条件的地方。符合各种条件的此种膨胀回路的正确比例请参阅相应的表格。 Unusually long runs of copper tubing should be provided with an expansion bend or loop. By bending soft temper copper tube, a simple form of expansion loop can be made. With the addition of combination flared-tube to solder joint fittings, as illustrated in Figure 1, these types of loops can be used when space or other limitations exist. The correct proportions of such expansion loop to meet various conditions are shown in the accompanying table. 图1
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上列图表是以3.05米铜管作为基准点进行计算。您可以在下列情况下使用:30.5米铜管,93.3oC温度变化。对于3.05米基准点是0.2256,对于30.5米则乘以10,结果是膨胀或收缩57.3毫米。
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环绕膨胀回路的半径与膨胀偏置回路的增加长度 Radii of Coiled Expansion Loops and Developed Lengths of Expansion Offsets |
管道公 称通径 Nominal Tube Size |
预计膨胀值 Expected Expansion |
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1/4 | 6 | 152 | 38 | 965 | 9 | 229 | 54 | 1372 | 11 | 279 | 66 | 1676 | 12 | 305 | 77 | 1956 | 14 | 356 | 86 | 2184 | 15 | 381 | 94 | 2388 | 16 | 406 | 102 | 2591 | 17 | 432 | 109 | 2769 |
3/8 | 7 | 178 | 44 | 1118 | 10 | 254 | 63 | 1600 | 12 | 305 | 77 | 1956 | 14 | 356 | 89 | 2261 | 16 | 406 | 99 | 2515 | 17 | 432 | 109 | 2769 | 19 | 483 | 117 | 2972 | 20 | 508 | 126 | 3200 |
1/2 | 8 | 203 | 50 | 1270 | 11 | 279 | 70 | 1778 | 14 | 356 | 89 | 2261 | 16 | 406 | 99 | 2515 | 18 | 457 | 111 | 2819 | 19 | 483 | 122 | 3099 | 21 | 533 | 131 | 3327 | 22 | 559 | 140 | 3556 |
3/4 | 9 | 229 | 59 | 1499 | 13 | 330 | 83 | 2108 | 16 | 406 | 101 | 2565 | 19 | 483 | 117 | 2972 | 21 | 533 | 131 | 3327 | 23 | 584 | 143 | 3632 | 25 | 635 | 155 | 3937 | 26 | 660 | 166 | 4216 |
1 | 11 | 279 | 67 | 1702 | 15 | 381 | 94 | 2388 | 18 | 457 | 115 | 2921 | 21 | 533 | 133 | 3378 | 24 | 610 | 149 | 3785 | 26 | 660 | 163 | 4140 | 28 | 7112 | 176 | 4470 | 30 | 762 | 188 | 4775 |
11/2 | 13 | 330 | 80 | 2032 | 18 | 457 | 113 | 2870 | 22 | 559 | 138 | 3505 | 25 | 635 | 160 | 4064 | 29 | 737 | 179 | 4547 | 31 | 787 | 196 | 4978 | 34 | 864 | 212 | 5385 | 36 | 914 | 226 | 5740 |
2 | 15 | 381 | 91 | 2311 | 21 | 533 | 129 | 3277 | 25 | 635 | 158 | 4013 | 29 | 737 | 183 | 4648 | 33 | 838 | 205 | 5207 | 36 | 914 | 224 | 5690 | 39 | 991 | 242 | 6147 | 41 | 1041 | 259 | 6579 |
21/2 | 16 | 406 | 102 | 2591 | 23 | 584 | 144 | 3658 | 28 | 711 | 176 | 4470 | 32 | 813 | 203 | 5156 | 36 | 914 | 227 | 5766 | 40 | 1016 | 249 | 6325 | 43 | 1092 | 269 | 6833 | 46 | 1168 | 288 | 7315 |
3 | 18 | 457 | 111 | 2819 | 25 | 635 | 157 | 3988 | 30 | 762 | 191 | 4851 | 35 | 889 | 222 | 5639 | 40 | 1016 | 248 | 6299 | 43 | 1092 | 272 | 6909 | 47 | 1194 | 293 | 7442 | 50 | 1270 | 314 | 7976 |
31/2 | 19 | 483 | 120 | 3048 | 27 | 686 | 169 | 4293 | 33 | 838 | 206 | 5232 | 38 | 965 | 239 | 6071 | 43 | 1092 | 267 | 6782 | 47 | 1194 | 293 | 7442 | 50 | 1270 | 316 | 8026 | 54 | 1372 | 338 | 8585 |
4 | 20 | 508 | 128 | 3251 | 29 | 737 | 180 | 4572 | 35 | 889 | 220 | 5588 | 41 | 1041 | 255 | 6477 | 45 | 1143 | 285 | 7239 | 50 | 1270 | 312 | 7925 | 54 | 1372 | 337 | 8560 | 57 | 1448 | 361 | 9169 |
5 | 23 | 584 | 142 | 3607 | 32 | 813 | 201 | 5105 | 39 | 991 | 245 | 6223 | 45 | 1143 | 284 | 7214 | 51 | 1295 | 318 | 8077 | 55 | 1397 | 348 | 8839 | 60 | 1524 | 376 | 9550 | 64 | 1626 | 402 | 10211 |
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