| 摘要 |
<p>An apparatus is provided for dispensing a liquid additive to the surface of a receding liquid in a pressurized vessel, particularly for automatically dispensing a liquid oil spreading agent to the surface of ballast water contained in a pressurized tank of a cargo carrier having oil based material at least partially floating on the surface thereof. The apparatus comprises a base fitting means mounted on said tank above said ballast water; a pressure equalization line having a top portion, an intermediate portion and a lower portion, said lower portion extending through said base fitting means to a point above the surface of said ballast water; a first valve located in said intermediate portion of said pressure equalization line; a liquid flow line having a top portion, an intermediate portion and a lower portion, said lower portion extending through said base fitting means to a point above the surface of said ballast water; said intermediate portion having an adjustable orifice; a second valve located in said intermediate portion of said liquid flow line; a container fitting disposed above said base fitting means having an internally threaded inner portion, the top portions of said pressure equalization line and said liquid flow line extending through said container fitting; and a container having an externally threaded neck for holding a predetermined quantity of said oil spreading agent threadably engaged to said container fitting, the top portion of said pressure equalization line extending above the end of said oil spreading agent.</p> |
