Plate type air-air heat exchanger

Abstract

The invention relates to a heat exchanger, and in particular relates to a plate type air-air heat exchanger. The structure of the plate type air-air heat exchanger is that each layer of plate bundle component at a plate bundle component hot end of the plate type air-air heat exchanger is connected with an expansion joint, so that the problem that the plate bundle component is expanded when being heated is effectively solved. A heat-transfer element of the air-air heat exchanger is a heat-transfer plate used by an octagonal welding plate type heat exchanger, and the surface of the plate is smooth and does not have a flowing dead area, so that dust is convenient to blow and the problem that the dust is accumulated in equipment is thoroughly solved. The plate bundle component of the air-air plate type heat exchanger is horizontally arranged, and the air-air plate type heat exchanger is low in production difficulty, adopts modular arrangement, achieves large-scale equipment, and is applicable to the large device production scale. A fluid distribution region connected with two kinds of medium inlet and outlet pipe boxes is adopted, and a medium pipe box flow guide plate and a flow distributing part of a medium distributing box flow guide plate are arranged in a medium pipe box and a medium distributing box, so that the problem of non-uniform fluid distribution of wide-width pipe boxes of large-scale heat exchange equipment is successfully solved.

Description

technical field [0001] The invention relates to a heat exchanger, in particular to a plate-type gas-gas heat exchanger, which is suitable for heat exchange between high-temperature and low-temperature gas-phase media in boilers, heating furnaces, exhaust gas catalytic incinerators and other petrochemical equipment to realize heat recovery and utilization. Background technique [0002] Most air-to-air heat exchangers in the prior art are heat pipe, shell and tube, heat storage, and plate-fin types, which generally have disadvantages such as low heat transfer efficiency, air leakage, large volume, easy dust accumulation, and high long-term operating costs. [0003] At present, heat exchange equipment using heat transfer plates for octagonal welded plate heat exchangers as heat transfer elements has become the mainstream of heat exchange equipment development, and more and more tubular heat exchange equipment has been or will be plate heat exchange equipment replaced. The appl...

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Problems solved by technology

[0002] Most of the air-to-air heat exchangers in the prior art are heat pipe type, shell and tube type, heat storage type, and plate-fin type, which generally have disadvantages such as low heat transfer efficiency, air leakage, large volume, easy dust accumulation, and high long-term operating costs.

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