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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．
% y% x- g& G6 [' I- u2 J- \关于美规的，可以参考CSA NO 68 and UL 1450的35~37节写得很明白．
; M- n* ^, D+ Z9 T! S如：! s0 D6 c8 O- |/ o
35.1.8 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! Z E& ?; o& T t
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.! `$ U0 i/ u2 I' F, q% n
7 s9 s( Z4 l: g5 G& P* H' x4 V0 ^37.1 A compressor system with an air-holding tank shall be provided with:+ Z4 ^/ [: [" ~1 c1 r- U; H
a) A pressure-regulating control switch that complies with the requirements in 37.2, to limit( h' C2 U) }6 P6 \1 [5 m. \
pressure build-up within the tank;6 H0 C" g! l# w6 i; |
Exception: A switch need not be provided on a product that uses other means of limiting tank
+ @ F7 t$ N7 t. epressure, such as an air dumping valve or a compressor design that inherently limits pressure.
" Y1 G- Q* j( |( ?/ y6 hb) A pressure gauge or other equivalent device to indicate when pressure is retained within the
0 {) J9 i7 G: q' rtank. A product with a pressure indicator that is not calibrated in pressure units shall be marked1 H3 Y/ S1 k: B1 y' I9 u% Y
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
