润滑科技信息平台

专利摘要

本发明公开了一种从BOG再液化系统排出润滑油的方法,所述BOG再液化系统被配置为通过由压缩机压缩BOG来再液化BOG,通过由热交换器与未压缩的BOG进行热交换来冷却压缩的BOG,并降低通过由压缩机冷却的流体的压力。通过减压器进行热交换。在该润滑油排放方法中,压缩机包括至少一个油润滑式气缸,如果满足至少一个预设条件,则确定是时候排放冷凝或固化的润滑油了。 ......

基本信息

专利类型:
发明专利
申请/专利号:
US16/635940
申请日期:
2017-08-03
专利申请人:
分类号:
["F17C9/04","B63B25/16","B63B79/10","B63H21/38","F17C13/02"]
发明/设计人:
LEE, JOON CHAE ， CHOI, DONG KYU ， CHOI, WON JAE ， LYU, SUNG KAK ， JANG, JAE HYEOUNG
权利要求: 1. A BOG reliquefaction system comprising:a compressor configured to compress BOG;a heat exchanger configured to cool the BOG compressed by the compressor through heat exchange using BOG not compressed by the compressor as a refrigerant;a pressure reducer configured to reduce a pressure of fluid cooled by the heat exchanger;a detection unit disposed upstream and/or downstream of the heat exchanger to detect whether the heat exchanger is clogged by lubricant oil;an alarm configured to indicate that the heat exchanger is clogged by the lubricant oil, based on a detection result of the detection unit;a determination unit configured to determine whether the heat exchanger is clogged by the lubricant oil based on the detection result of the detection unit;a bypass line through which BOG is supplied to the compressor after bypassing the heat exchanger; anda bypass valve disposed on the bypass line;wherein, responsive to determining, by the determination unit, that the heat exchanger is clogged by the lubricant oil, the determination unit is configured to control the bypass valve to be opened, thereby supplying the BOG from a storage tank to the compressor through the bypass line without supplying the BOG from the storage tank to a cold fluid channel of the heat exchanger while the BOG compressed by the compressor is supplied to the hot fluid channel of the heat exchanger, which allows the temperature of the hot fluid channel of the heat exchanger to rise to discharge impurities accumulated inside the heat exchanger.2. The BOG reliquefaction system according to claim 1, wherein the detection unit is at least one of a temperature sensor and a pressure sensor.3. The BOG reliquefaction system according to claim 2, wherein the detection unit comprises at least one of:a first temperature sensor disposed upstream of the cold fluid channel of the heat exchanger;a second temperature sensor disposed downstream of the cold fluid channel of the heat exchanger;a third temperature sensor disposed upstream of the hot fluid channel of the heat exchanger;a fourth temperature sensor disposed downstream of the hot fluid channel of the heat exchanger;a first pressure sensor disposed upstream of the hot fluid channel of the heat exchanger; anda second pressure sensor disposed downstream of the hot fluid channel of the heat exchanger.4. The BOG reliquefaction system according to claim 1, wherein the heat exchanger comprises a micro-channel type fluid channel.