|
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.
0 e# r9 A& V' V7 c0 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.- F" b+ e4 z8 }( R% h! V1 t" Q" g
如:
# o! ^% @1 [( C( G: u% o% f35.1.8 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.2 Y' ?4 z/ S- k( ?2 m
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., K! H$ z+ V- Y' W2 `' Q
4 W( N1 b) B/ W! h5 m* [" n2 V37.1 A compressor system with an air-holding tank shall be provided with:
5 S9 D1 D0 o5 a6 c1 sa) A pressure-regulating control switch that complies with the requirements in 37.2, to limit
/ v( q; R$ N6 }. M$ Fpressure build-up within the tank;% q# o5 c X4 Z& N, S
Exception: A switch need not be provided on a product that uses other means of limiting tank
6 U" ]; {; B9 {; s0 Ppressure, such as an air dumping valve or a compressor design that inherently limits pressure.
3 t2 L1 m. I+ }0 Yb) A pressure gauge or other equivalent device to indicate when pressure is retained within the! {; n+ O; F1 k/ q6 c! U
tank. A product with a pressure indicator that is not calibrated in pressure units shall be marked9 C, C( n+ O6 p2 o2 a0 S
in accordance with 61.1.9. |
|