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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．
3 `7 Y7 J7 v2 y+ ~2 w% z1 g* D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 q5 D/ u# G! _# n. K7 G如：/ @' F* _ {; Z+ Z# P- I: Z( z* V3 ]
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.
5 W8 V% l& t. I/ Q. M4 ]1 R36.5 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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37.1 A compressor system with an air-holding tank shall be provided with:
3 b' [% r, D8 v' b6 ~5 X. b! n3 O" Ea) A pressure-regulating control switch that complies with the requirements in 37.2, to limit8 @( M" ]4 c7 f) T( {
pressure build-up within the tank;/ U6 o% g" r6 b1 W
Exception: A switch need not be provided on a product that uses other means of limiting tank& \% i3 a# T) C: b. Q
pressure, such as an air dumping valve or a compressor design that inherently limits pressure." |: P1 B- F6 J* Y
b) A pressure gauge or other equivalent device to indicate when pressure is retained within the
2 _: n1 K, e/ R0 y: Mtank. A product with a pressure indicator that is not calibrated in pressure units shall be marked
8 s, k. ~ c7 u2 H. Yin 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
