Heat exchanger with double-shell structure

Abstract

The invention discloses a heat exchanger with a double-shell structure. The heat exchanger with the double-shell structure comprises an outer shell body, an inner shell body and a heat exchange core arranged in the inner shell body, wherein the inner shell body comprises an inner shell with an opening and an inner shell cover plate arranged at an opening end and detachably connected to the inner shell; the outer shell body comprises an outer shell with an opening and an outer shell cover plate arranged at an opening end and detachably connected to the outer shell; the inner shell is sleeved in the outer shell; the inner shell cover plate is sleeved in the outer shell cover plate. That is to say, in the invention, the inner and outer shell bodies can be detached from each other, and the inner and outer shell bodies per se also can be detached, so that the heat exchanger is convenient for cleaning and replacement of a heat exchange core mounted inside the heat exchanger, and avoids damage to the inner and outer shell bodies; meanwhile, a heat insulating material is filled between the inner shell and the outer shell, so that heat-retaining capacity of the heat exchanger per se is enhanced, heat leakage can be prevented, and anti-freezing capability of the heat exchanger is enhanced.

Description

technical field [0001] The invention relates to a heat exchanger, in particular to a double shell structure heat exchanger. Background technique [0002] With the development of science and technology, while the heat exchanger is becoming more and more diversified, it is required to be small in size and large in heat transfer, and the working environment of the application is becoming more and more harsh. The structure of most heat exchangers is a single-shell structure. The cylinders of the plate and shell side are connected to the sealed isolation parts of the cold and hot media at the same time. Due to the temperature difference between the cold and hot media of the heat exchanger, the sealed isolation parts are Thermal stress will be generated, and at the same time, thermal expansion and contraction of the plate and shell side cylinder will be concentrated on the sealing isolation part, causing deformation of the isolation part or cracking of the weld seam, making the he...

AI Technical Summary

Problems solved by technology

[0005] For this reason, the technical problem to be solved by the present invention lies in the double-shell heat exchanger in the prior art. The inner and outer shells are fixedly connected, which is inconvenient to disassemble and has no heat preservation function. Double-shell structure heat exchanger with self-insulation function

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