Shell-tube heat exchanger of coiled heat exchanging pipe

Abstract

The invention discloses a shell-tube heat exchanger of a coiled heat exchanging pipe, and the shell-tube heat exchanger comprises a shell-tube housing and one group or multiple groups of coiled heat exchanging pipes which are arranged inside the shell-tube housing, wherein the shell-tube housing is a cylindrical vertical tube with end covers on two ends, the wall or the end covers of the cylindrical vertical tube are respectively provided with one or one group of heat exchanging medium 1 inlet, one or one group of heat exchanging medium 1 outlets, one or one group of heat exchanging medium 2 inlet and one or one group of heat exchanging medium 2 outlets, each coiled heat exchanging pipe is a continuous U-shaped bending heat exchanging pipeline, the multiple groups of coiled heat exchanging pipes are in parallel connection with one another, pipe orifices on two ends of each coiled heat exchanging pipe are respectively and correspondently connected with the heat exchanging medium 2 inlet and the heat exchanging medium 2 outlet, the coiled heat exchanging pipes are fixed in the shell-tube housing through a support, a space which is formed by the heat exchanging medium 1 inlet, an internal space of the shell-tube housing and the heat exchanging medium 1 outlet is not communicated with a space which is formed by the heat exchanging medium 2 inlet, the internal space of each coiled heat exchanging pipe and the heat exchanging medium 2 outlet. Due to the adoption of the shell-tube heat exchanger, the heat exchanging of the heat exchanging medium 1 and 2 in a small long space of the shell-tube housing under the situation that the heat exchanging medium 2 has a lower limit requirement on the flowing can be realized.

Description

technical field [0001] The invention relates to a heat exchanger, in particular to a shell-and-tube heat exchanger with serpentine heat exchange tubes. Background technique [0002] Common heat exchangers have been widely used, and can be divided into ordinary shell and tube heat exchangers, casing heat exchangers, plate heat exchangers and fin (light tube) air heat exchangers according to the structure; Uses are divided into evaporators, condensers and non-phase-change heat exchangers. [0003] Ordinary shell and tube heat exchanger consists of multi-heel heat exchange straight tubes, spiral tubes or U-shaped tubes fixed in a straight cylinder according to certain specifications. The inner space of the cylinder is divided into two independent areas by the heat exchange tubes. Two heat exchange media with different temperatures flow through two independent areas respectively, and exchange heat through the surface of the heat exchange tube. [0004] The sleeve-tube heat exc...

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Problems solved by technology

[0007] For all the above heat exchangers, in special use cases: the heat exchange medium needs multiple inlets and outlets, the heat exchange medium 2 has a minimum flow rate requirement, the external dimension, length and space requirements are miniaturized, the overall structure requirements are simple, and the production and manufacturing requirements cannot be completely completed. fulfil requirements

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