Tube-wound heat exchanger with separated core and shell

The invention discloses a core shell separated wound tube heat exchanger, and belongs to the technical field of low temperature heat exchange. The core shell separated wound tube heat exchanger comprises a shell, a sleeve, a center tube, a uniform distributor and an annular sealing section which are sequentially arranged from outside to inside, wherein an annular cavity is formed between the center tube and the shell; the uniform distributor of a groove-shaped disc structure and the annular sealing section are sequentially embedded at the outer part of the sleeve; the annular sealing section is connected with the bottom of the uniform distributor; a plurality of wound tubes are arranged inside the sleeve; one ends of the wound tubes directly stretch out of the bottom of the uniform distributor; the other ends of the wound tubes stretch out of the top of the uniform distributor through gas phase circulation holes; and a plurality of uniformly distributed liquid phase circulation holes and the plurality of symmetrical gas phase circulation holes are formed in the uniform distributor. According to the core shell separated wound tube heat exchanger, the problem that after the heat exchanger is miniaturized, a traditional structure is difficult to process and manufacture can be solved, and the core shell separated wound tube heat exchanger can be utilized in amplification tests of industrial heat exchange devices in natural gas liquefaction.