Water-electricity co-production device and method based on liquefied natural gas cold energy

The invention provides a water-electricity co-production device based on liquefied natural gas cold energy and a method thereof. The water-electricity co-production device comprises an LNG gasification mechanism for pressurizing and gasifying liquefied natural gas, a power generation mechanism and a seawater desalination mechanism for carrying out desalination operation on seawater, liquefied natural gas in the LNG gasification mechanism is connected with seawater in the seawater desalination mechanism and the power generation mechanism in a heat exchange mode. The power generation mechanism is in power supply connection with the seawater desalination mechanism and the LNG gasification mechanism. The diversity of liquefied natural gas cold energy utilization modes is improved, the recycling amount of cold energy released in the liquefied natural gas gasification process is increased, and the effect of improving the recycling rate of the liquefied natural gas cold energy is achieved. 本发明提供一种基于液化天然气冷能的水-电联产装置及其