SHIP
    5.
    发明公开
    SHIP 审中-公开

    公开(公告)号:EP3305648A1

    公开(公告)日:2018-04-11

    申请号:EP16803588.9

    申请日:2016-04-05

    摘要: Disclosed is a ship including a storage tank for storing a liquefied gas. The ship includes: an boil-off gas heat exchanger installed on a downstream of the storage tank such that compressed boil-off gas (hereinafter, referred to as "first fluid") is made to exchange heat and cooled using boil-off gas, which is discharged from the storage tank, as a refrigerant; a compressor installed on a downstream of the boil-off gas heat exchanger so as to compress a part of the boil-off gas discharged from the storage tank; an extra compressor installed on a downstream of the boil-off gas heat exchanger in parallel with the compressor so as to compress the other part of the boil-off gas discharged from the storage tank; a refrigerant heat exchanger for additionally cooling the first fluid that is cooled by the boil-off gas heat exchanger; a refrigerant decompressing device which expands the second fluid, which is sent to the refrigerant heat exchanger (hereinafter, referred to as "second fluid") and cooled by the refrigerant heat exchanger, and then sends the second fluid back to the refrigerant heat exchanger; a first decompressing device which expands a part of the first fluid, which is cooled by the boil-off gas heat exchanger and by the refrigerant heat exchanger; and a third decompressing device which expands the remaining part of the first fluid, which is cooled by the boil-off gas heat exchanger and by the refrigerant heat exchanger, and sends the expanded remaining part of the first fluid back to the refrigerant heat exchanger, wherein the refrigerant heat exchanger heat-exchanges the first fluid to cool the first fluid, using the second fluid, a fluid expanded by the refrigerant decompressing device, and a fluid decompressed by the third decompressing device as a refrigerant; the first fluid is boil-off gas compressed by the compressor or is a confluent flow of the boil-off gas compressed by the compressor and the boil-off gas compressed by the extra compressor; and the second fluid is the boil-off gas compressed by the extra compressor or a confluent flow of the boil-off gas compressed by the compressor and the boil-off gas compressed by the extra compressor.

    摘要翻译: 公开了一种包括用于存储液化气的储罐的船。 该船舶包括:蒸发气体热交换器,该蒸发气体热交换器安装在储罐的下游,使得压缩蒸发气体(在下文中称为“第一流体”)被交换热量并使用蒸发气体被冷却, 作为制冷剂从储罐中排出; 压缩机,其安装在所述蒸发气体热交换器的下游,以压缩从所述储罐排出的蒸发气体的一部分; 额外的压缩机,安装在蒸发气体热交换器的与压缩机平行的下游,以压缩从储罐排出的另一部分蒸发气体; 制冷剂热交换器,用于额外冷却由蒸发气体热交换器冷却的第一流体; 制冷剂减压装置,该制冷剂减压装置使送到制冷剂热交换器的第二流体(以下称为“第二流体”)膨胀并被制冷剂热交换器冷却,然后将第二流体送回制冷剂热交换器; 第一减压装置,所述第一减压装置使由所述蒸发气体热交换器和所述制冷剂热交换器冷却的所述第一流体的一部分膨胀; 以及第三减压装置,所述第三减压装置使由所述蒸发气体热交换器和所述制冷剂热交换器冷却的所述第一流体的剩余部分膨胀,并且将膨胀的所述第一流体的剩余部分返回到所述制冷剂热交换器, 其中,所述制冷剂热交换器使用所述第二流体,由所述制冷剂减压装置膨胀的流体以及由所述第三减压装置减压的流体作为制冷剂,对所述第一流体进行热交换以冷却所述第一流体; 第一流体是由压缩机压缩的蒸发气体或是由压缩机压缩的蒸发气体和由额外压缩机压缩的蒸发气体的汇合流; 第二流体是由额外压缩机压缩的蒸发气体或由压缩机压缩的蒸发气体和由额外压缩机压缩的蒸发气体的汇合流。