Square shell-and-tube heat exchanger

Abstract

The invention discloses a square shell-and-tube heat exchanger. The square shell-and-tube heat exchanger comprises a heat exchanger shell, an upper connector and a lower connector, wherein the upper connector is connected to the top of the heat exchanger shell, the lower connector is connected to the bottom of the heat exchanger shell, the heat exchanger shell is square, the two ends of the heat exchanger shell are open, a left side plate of the shell serves as a tube plate, and the outer side face of the tube plate is connected with a semicircular tube bundle; the semicircular tube bundle comprises a plurality of semicircular tubes which are not communicated with one another; a plurality of rows of U-shaped heat exchange tubes are connected in the shell, two communicating ends of each heat exchange tube are correspondingly communicated with two adjacent rows of tube holes in the tube plate, and the two communicating ends of each heat exchange tube are correspondingly communicated withtwo adjacent semicircular tubes; the semicircular pipes at the top end of the semicircular pipe bundle are communicated with a liquid inlet, and the semicircular pipes at the bottom end are communicated with a liquid outlet; and heat exchange liquid enters the heat exchange pipes through the liquid inlet and flows out of the liquid outlet. According to the square shell-and-tube heat exchanger, the more heat exchange tubes can be connected under the same length, so that the problem that the multi-flow heat exchange tubes are difficult to seal is solved.

Description

technical field [0001] The invention relates to the technical field of heat exchangers, in particular to a square shell-and-tube heat exchanger. Background technique [0002] The shell-and-tube heat exchanger includes a gas-liquid heat exchanger, that is, the heat exchange medium is gas, and the target medium is liquid. The conventional gas-liquid heat exchanger has fewer processes and is easy to seal. When the heat exchanger is large, the tube side structure is special, and the number of processes is large, the traditional structure cannot be sealed. [0003] The heat exchanger whose heat exchange medium is gas needs to ensure that the heat exchange medium can be fully utilized to prevent the heat exchange medium from flowing out without being used. How to ensure the sealing of large-scale heat exchangers and ensure the full utilization of heat exchange medium is a problem that we need to consider. Contents of the invention [0004] The purpose of the present invention ...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a square shell-and-tube heat exchanger to solve the problem of difficult sealing of large-flow heat exchangers in the prior art

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