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1楼错误，欧洲简单压力容器是否涵盖是依压力大小(BAR)乘以储气罐容积(L)是否大于50来确定的．
6 Q' u( Q; _# i0 a) X1 p关于美规的，可以参考CSA NO 68 and UL 1450的35~37节写得很明白．
' I4 g! e+ s) H8 T如：
* _: j2 K! X4 r+ j" B9 k35.1.8 When the unit is in its normal operating position, the drain hole shall be provided in the lowest portion of a pressure vessel. The hole shall be a threaded hole of not smaller than 1/4-inch NPT and shall be provided with a removable plug or piping to a drain cock. The system shall have provision for gravity or pressure drainage of the vessel.
# |! O C4 U) M- ~2 d- _. a36.5 A vessel having an inside diameter of more than 3 inches (76 mm) and subject to air or steam pressure generated or stored within the product shall be protected by a pressure-relief device.5 j) r0 `8 _4 f6 P r
' K. z! Y0 \& g. P" | X2 m
37.1 A compressor system with an air-holding tank shall be provided with:$ E8 t/ p8 h+ q
a) A pressure-regulating control switch that complies with the requirements in 37.2, to limit
$ A3 r1 @$ A: i0 p ?9 V6 P% \8 gpressure build-up within the tank;
2 n6 l6 x) ^: w/ R$ z4 AException: A switch need not be provided on a product that uses other means of limiting tank
1 }% Z; I# Y' @0 a5 f7 ~1 [pressure, such as an air dumping valve or a compressor design that inherently limits pressure.! a% R b* x2 L: L6 G) Z& n) I3 i
b) A pressure gauge or other equivalent device to indicate when pressure is retained within the7 ~$ t; W9 I! y% S
tank. A product with a pressure indicator that is not calibrated in pressure units shall be marked
4 e6 e$ i3 u+ S; H9 _( p) U, Qin accordance with 61.1.9. |
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发表于 2009-2-3 17:04
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发表于 2009-3-19 12:37
