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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．
# y5 j0 K; r5 V) d; \0 f" d关于美规的，可以参考CSA NO 68 and UL 1450的35~37节写得很明白．1 t4 G9 o6 b) w
如：
/ g9 Z* h `; r7 h9 t5 b, u+ H35.1.8 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.9 p4 G. j& |0 v: ]% I
36.5 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.7 a# @1 B4 o3 S8 @9 s1 i p
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37.1 A compressor system with an air-holding tank shall be provided with:. f+ X& g5 \- A6 w* P
a) A pressure-regulating control switch that complies with the requirements in 37.2, to limit7 Q c1 V: J$ o, v5 N2 \+ N
pressure build-up within the tank;
9 W$ r. ^. D8 i5 K% w6 pException: A switch need not be provided on a product that uses other means of limiting tank) e( X1 ^! N$ b O. B
pressure, such as an air dumping valve or a compressor design that inherently limits pressure.9 C0 q4 a) `8 b) C
b) A pressure gauge or other equivalent device to indicate when pressure is retained within the
6 u0 J# D, A% t' c/ K9 Utank. A product with a pressure indicator that is not calibrated in pressure units shall be marked; L: f: M( g. a4 O, {- K' J& B
in 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
