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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．
+ g/ c6 ]/ l/ |6 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．0 j+ ?' w- O' c
如：
( S1 q" Y+ J0 F8 s8 `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.
$ b; x( A+ r; N0 o. {' e, D36.5 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.# P# k/ Y5 N; M; p7 C& m
5 ~0 Q7 Z" I9 H9 G, D37.1 A compressor system with an air-holding tank shall be provided with:
. [7 z/ q/ a# Z1 n0 c( E6 @/ x* Ca) A pressure-regulating control switch that complies with the requirements in 37.2, to limit
' n1 P5 m: P2 _1 F2 y7 Vpressure build-up within the tank;3 K; ]9 Q4 d8 @- _; m
Exception: A switch need not be provided on a product that uses other means of limiting tank
, ?" _8 ]5 ` k" ppressure, such as an air dumping valve or a compressor design that inherently limits pressure.7 D) f/ T, H7 Y6 s8 E# {
b) A pressure gauge or other equivalent device to indicate when pressure is retained within the
- J# O6 v; P6 j- a( Etank. A product with a pressure indicator that is not calibrated in pressure units shall be marked, ~9 L: x; e4 M, _& 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
