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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.0 A, u a3 ]! h2 }$ I9 [0 s' _
关于美规的,可以参考CSA NO 68 and UL 1450的35~37节写得很明白.
2 V% p2 h5 a4 ?# S# Y- p如:
% | `' I6 A& ]' i35.1.8 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. [) I$ g" q& B9 d2 @3 `
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.
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A' Q2 z) n2 I: g* n$ y37.1 A compressor system with an air-holding tank shall be provided with:
9 C Y" X/ V6 ]a) A pressure-regulating control switch that complies with the requirements in 37.2, to limit9 Y, r7 i" ~. g4 X2 U1 @
pressure build-up within the tank;
0 L A- k! K" p6 n3 {8 J, @Exception: A switch need not be provided on a product that uses other means of limiting tank
4 A9 k- D; o, F$ B2 Zpressure, such as an air dumping valve or a compressor design that inherently limits pressure.8 J1 c4 P" p( m' E3 j
b) A pressure gauge or other equivalent device to indicate when pressure is retained within the
" Z$ g& l0 ]1 t: O5 gtank. A product with a pressure indicator that is not calibrated in pressure units shall be marked* B4 a2 e- |, W$ E9 @+ ]! Y$ ]& o2 h
in accordance with 61.1.9. |
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