4 Oil conservator should have the device of oil-filling, oil-discharge, gas relief and blow-down, oil level meter, vent plug, vent-pipe, lowdown pipe, oil inlet pipe, `lifting hook and so on.

• 4储油柜应具有注油、放油、放气和排污装置，带有油位计、放气塞、排气管、排污管和进油管及吊攀等。