術(shù)語 | 描述 |
---|---|
液化石油氣 liquefied petroleum gas | low pressure liquefied gas composed of one or more light hydrocarbons which are assigned to UN 1011, UN 1075, UN 1965, UN 1969 or UN 1978 only and which consists mainly of propane, propene, butane, butane isomers, butene with traces of other hydrocarbon gases |
壓力容器 pressure vessel | assembly of the pressure envelope (including the openings and their closures) and non-pressure-retaining parts attached directly to it |
地下壓力容器 underground pressure vessel | pressure vessel below the surrounding ground level and completely covered |
地上壓力容器 overground pressure vessel | pressure vessel above the surrounding ground level and not covered |
固定液位計 fixed liquid level gauge | control device, such as a dip tube in combination with a vent valve to indicate when a predetermined liquid level has been reached or surpassed |
安全閥 PRV | self-closing valve which automatically, without the assistance of any energy other than that of the vapour concerned, discharges vapour at a predetermined pressure, and operates with a pop action |
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