A flexible structure of strong thermal adaptability plate-fin heat exchanger core

Abstract

The invention discloses a core body of a plate-fin heat exchanger with strong thermal adaptability in a flexible structure, including a cover plate, a seal, an expandable partition, and an expandable fin. Several layers of expandable partitions and several layers of expandable fins are alternately stacked and arranged, and are connected by brazing with cover plates. The hot channel is two layers of expandable partitions sandwiching a layer of expandable The cold aisle is a layer of expandable fins sandwiched between two layers of expandable partitions arranged opposite to the hot aisle and sealed by seals. The core of the plate-fin heat exchanger is internally cooled. The sealing strips at both ends of the hot aisle are grooved on the aisle side. A flexible structure with strong thermal adaptability plate-fin heat exchanger core body, which can be used in special working conditions such as large heat transfer temperature difference, alternating fluid temperature, discontinuous heat transfer, etc., with a wide range of applicable temperature, double arch Shaped cover plate and double Ω-shaped seal structure can greatly improve the thermal adaptability of the equipment, reduce the risk of damage such as fatigue damage, and prolong the service life of the equipment.

Description

technical field [0001] The invention relates to the field of heat exchangers, in particular to a core body of a plate-fin heat exchanger with a flexible structure and strong thermal adaptability. Background technique [0002] Due to its compact structure, high heat transfer efficiency, and strong adaptability to working fluids, plate-fin heat exchangers have recently been widely used in various fields such as petrochemicals, aviation vehicles, power machinery, air separation cryogenics, and atomic energy. With the continuous improvement of the production technology level, the heat transfer conditions are becoming more and more complicated. More and more special processes such as high and low temperature heat transfer with large temperature difference, variable temperature heat transfer with alternating fluid temperature, and discontinuous heat transfer appear in more and more production processes. In the case of heat exchange in the environment, long-term work in the alterna...

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Problems solved by technology

The above patents have been optimized and innovated on the basis of the design of the traditional plate-fin heat exchanger, which has improved the efficiency of the equipment to a certain extent. There are certain limitations in the application of special heat exchange occasions, and there is still a lot of room for optimization in the design technology of plate-fin heat exchangers.

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