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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 S1 R& T: }. r8 y, j o `4 `( ~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; h6 s3 \6 [! {. e" n
如：
6 Q+ z" ^; h, n$ ^# c35.1.8 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$ ~" J9 R3 Y1 f, B& t& h2 j
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.2 z5 D3 J7 S$ B5 K' U% j& }: H
/ r) J9 M- ?, f K: c) s# m37.1 A compressor system with an air-holding tank shall be provided with:" g+ T9 P. A+ O
a) A pressure-regulating control switch that complies with the requirements in 37.2, to limit$ ^6 {6 ~+ c; A ^; ]# S! b
pressure build-up within the tank; M# A/ k B t
Exception: A switch need not be provided on a product that uses other means of limiting tank# E, N- Y; {0 H- m% \3 y' {+ k! r, j
pressure, such as an air dumping valve or a compressor design that inherently limits pressure.
$ D0 B: G0 j8 L% Tb) A pressure gauge or other equivalent device to indicate when pressure is retained within the( C9 ~9 e P1 ~9 n; {
tank. A product with a pressure indicator that is not calibrated in pressure units shall be marked5 | u9 J6 p; U& n
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