Rotating wheel type gas-gas heat exchanger

Abstract

The invention discloses a rotating wheel type gas-gas heat exchanger, relates to the technical field of gas treatment, and solves the technical problem of enlarging the temperature difference application range. The rotating wheel type gas-gas heat exchanger comprises a case, an inner cavity of the case is divided into a low-temperature side air duct and a high-temperature side air duct, a heat exchange rotating wheel is arranged in the case, the heat exchange rotating wheel is composed of a wheel shaft and a heat exchange wheel core; the heat exchange wheel core correspondingly extends into the low-temperature side air duct and the high-temperature side air duct; and the heat exchange wheel core is formed by alternately stacking two metal belts from inside to outside in the radial direction of the heat exchange wheel core, one metal belt is a flat belt, the other metal belt is a corrugated belt, the rigidity of the flat belt is lower than the rigidity of the corrugated belt, the wave trough of the corrugated belt faces inwards, and the wave crest of the corrugated belt faces outwards. The rotating wheel type gas-gas heat exchanger is used for heat exchange between low-temperature gas and high-temperature gas.

Description

technical field [0001] The invention relates to the gas treatment technology, in particular to the technology of a rotary gas-gas heat exchanger. Background technique [0002] Gas-to-gas heat exchangers are used for heat exchange between high-temperature gas and low-temperature gas, such as heat exchange between boiler flue gas and air, heat exchange between kiln exhaust gas and combustion-supporting air, heat exchange between oven exhaust gas and inlet air etc. [0003] The wheel core structure and cavity structure of the existing rotary air-gas heat exchanger are prone to deformation under the action of thermal deformation and thermal stress due to thermal expansion and contraction due to large temperature differences, which will cause sealing failure at the sealing part. Therefore, the existing rotary The application range of the wheeled gas-gas heat exchanger is relatively narrow, and the temperature difference between the low temperature side and the high temperature s...

AI Technical Summary

Problems solved by technology

[0003] The wheel core structure and cavity structure of the existing rotary air-gas heat exchanger are prone to deformation under the action of thermal deformation and thermal stress due to thermal expansion and contraction due to large temperature differences, which will cause sealing failure at the sealing part. Therefore, the existing rotary The application range of the wheeled gas-gas heat exchanger is relatively narrow, and the temperature difference between the low temperature side and the high temperature side is relatively small

In addition, when the pressure difference between the low-temperature side and the high-temperature side is too large, the seal between the low-temperature side and the high-temperature side is easily deformed due to excessive pressure, resulting in seal failure

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