| 摘要 |
1343648 Removing oil slicks from open water RHEINWERFT GmbH 7 May 1971 [19 June 1970] 13702/71 Heading B1D An open vessel whose upper edge is defined by a vertically adjustable ring 1 floats on the water at such a level that oil and some water flows over ring 1, oil and water being withdrawn from the vessel by pumps attached to respective conduits 11, 9. Floats 3 hold the vessel at a suitable level in the water, and ring 1 extends above the surface until the pumps reduce the internal levels and cause it to submerge. Float 5 is attached to valves 7, 17 so that the vessel is cut off from conduit 9 when the oil layer in the vessel gets too thick, water being then drawn through inlet 16 to induce a general flow of floating oil towards the vessel. In Fig. 1, ring 1 is buoyant, slidably connected to vessel wall 2 by means 19, and has a gas inlet 12 and steam heater inlet 13. In Fig. 2 (not shown) a toroidal ring is connected to wall 2 by bellows. In Fig. 3 (not shown) the ring is replaced by a rubber sleeve attached to wall 2 and adapted to bend inwards of the vessel in response to a relatively lower liquid level inside.
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