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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.
2 d5 I! L$ e7 R0 ~$ S: A关于美规的,可以参考CSA NO 68 and UL 1450的35~37节写得很明白.
( f& h$ C* ~ K) r0 k, @0 ^. t2 }如:
& f, z; P% I5 C4 B4 ^% e. u35.1.8 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.# m+ l/ p' M7 `9 B, w! ?
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.! t7 {5 |: z; a8 Y6 |8 K
: J+ C) V$ s' K37.1 A compressor system with an air-holding tank shall be provided with:
7 U1 }. L6 v2 K6 d) ca) A pressure-regulating control switch that complies with the requirements in 37.2, to limit' r2 F4 ?" d/ x
pressure build-up within the tank;7 W- R s! |7 k6 Y! ?7 x, K5 z7 O
Exception: A switch need not be provided on a product that uses other means of limiting tank
# r! c. R' o: Gpressure, such as an air dumping valve or a compressor design that inherently limits pressure.4 A6 n5 G9 z4 y0 y! W! V
b) A pressure gauge or other equivalent device to indicate when pressure is retained within the
1 \$ v, {. G' H S7 j# Dtank. A product with a pressure indicator that is not calibrated in pressure units shall be marked
- M1 A6 L7 {! W) D. a6 x$ Lin accordance with 61.1.9. |
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