| 摘要 |
<p>1487490 Cleaning tanks JONKOPINGS MEKANISKA WERKSTADS AB 23 April 1975 [26 April 1974] 16856/75 Heading A4F [Also in Division F1] A system comprising a cargo tank is provided with means for unloading and draining cargo and/or washing liquid, cleaning the tank, wash-draining, after-draining, and refining the used washing liquid, and including a main pump 12 connected by a suction pipe 2 to the cargo tank 1 for emptying it through a pressure pipe 13, and e.g. pipe 15, the inlet of the pump 12 being also connected to a washing liquid source, e.g. a sea water inlet 17, spray apparatus 21 in the tank 1 connected to the pressure pipe 13, and a drainage pump 35 for wash-draining and/or after-draining in communication with the suction pipe 2 via a separator tank 5 in which air and/or other gas is removed by suction, e.g. applied by a suction pump (8) Fig. 3 (not shown). The system illustrated in Fig. 9 has a plurality of oil tanks 1 each associated with a main pump 12 and a drainage pump 35 driven by a turbine 37. For unloading and after-draining the oil, various valves in the pipe system are set to produce the flows, indicated in Fig. 9, the complete arrows designating the flow of oil being unloaded or utilized to drive the turbines 37, and the dashed arrows designating the flow of oil being after-drained and fed to a separation tank 27. The turbines 37 may alternatively be driven by a flow of ballast water being fed into the tanks 1. For wash-draining, the outlets of the drainage pumps 35 are connected via pipes (78) Fig. 11 (not shown) to the sea suction pipe 16, or via pipes (80) Fig. 12 (not shown) to the suction pipe 2, and sea water is sprayed into the tanks 1 via the sprayers 21. Wash-draining may also be effected during unloading of the oil by spraying part of the oil through the sprayers 21.</p> |
