Novel heat exchanger capable of automatically adjusting heat exchange area and flow adjusting method

Abstract

The invention discloses a novel heat exchanger capable of automatically adjusting a heat exchange area. The heat exchanger comprises a shell, a first channel and a second channel symmetrically arranged on two axial sides of the shell, a first sealing plate and a second sealing plate symmetrically sealed on two axial sides of the shell for dividing the shell, the first channel and the second channel into a shell cavity, a first channel cavity and a second channel cavity, heat exchange pipes arranged in the shell in parallel at equal intervals and communicating with the first channel cavity andthe second channel cavity by two ends, a piston arranged in the first channel cavity and tightly contacted with the inner wall of the first channel cavity in the peripheral direction and capable of moving in the axial direction of the first channel cavity, and a driving mechanism connected with the piston by an output end and used for driving the piston to move in the axial direction of the firstchannel cavity. The invention further provides a flow adjusting method of the novel heat exchanger capable of automatically adjusting the heat exchange area; the heat exchange is guaranteed; and the energy is saved.

Description

technical field [0001] The invention relates to the technical field of heat exchangers, and more specifically, the invention relates to a novel heat exchanger with automatic heat exchange area adjustment and a flow adjustment method. Background technique [0002] A heat exchanger is a commonly used process equipment for heat exchange. The shell and tube heat exchanger is a partitioned wall heat exchanger that uses the wall of the tube bundle enclosed in the shell as the heat transfer surface. This kind of heat exchanger has simple structure, low cost, wide cross-section, easy to clean scale, can be made of various structural materials (mainly metal materials), and can be used under high temperature and high pressure. It is the most widely used type at present. [0003] Taking thermal power generation as an example, heat exchangers are essential equipment. Most of the condensers used now are condensers with a fixed heat exchange area. However, in reality, users have differ...

AI Technical Summary

Problems solved by technology

However, in reality, users have different power consumption demands at different times of the day, and the load of the grid changes accordingly, and the load of the steam turbine is also changing, resulting in the change of exhaust steam flow, and the difference between day and night is large

The condenser cannot make changes according to real-time working conditions, which will cause the fluid outlet temperature to deviate from the design value and affect the subsequent process

At the same time, the fluid consumption of the tube side increases, and the water pump also consumes unnecessary energy.

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