Heat exchange system and liquid gasification equipment

The utility model discloses a heat exchange system and liquid gasification equipment, and relates to the technical field of heat exchange, the heat exchange system comprises a box body, an evaporator, a first pipeline, a second pipeline and a heat exchange assembly, one end of the first pipeline is connected with a liquid outlet of the box body, the other end of the first pipeline is connected with a liquid return opening of the box body, and the evaporator and the heat exchange assembly are arranged on the first pipeline; the heat exchange assembly is located between the evaporator and the liquid return opening. The heat exchange assembly comprises a plurality of heat exchangers and thermostats which are sequentially arranged, each thermostat is arranged between every two adjacent heat exchangers and comprises a liquid inlet connector, a first liquid outlet connector and a second liquid outlet connector, and in every two adjacent heat exchangers of the thermostats, the outlet end of the first heat exchanger