Corrugated plate cooling device and application

CN115790245BActive Publication Date: 2026-01-30NORTHWESTERN POLYTECHNICAL UNIV
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Patent Information

Application Number
CN202211227425.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2022-04-11
Filing Date
2022-10-09
Publication Date
2026-01-30
Estimated Expiration
2042-10-09

AI Technical Summary

Technical Problem

The existing cooling structure of the afterburner of aero engines has problems such as excessive consumption of cold air, large thermal stress, large flow resistance and backflow of gas, making it difficult to effectively protect the heat shield in high-temperature environments.

Method used

The cooling structure adopts a combination of double-layer corrugated plates and hollow turbulence columns. The corrugated plates on the cold side and the corrugated plates on the hot side are staggered. The hollow turbulence columns connect the cold air passage and the high-temperature gas passage to form a gourd-shaped middle channel, and form an air film and convection cooling through the hollow holes.

Benefits of technology

It improves cooling efficiency, reduces cooling gas volume, lowers flow resistance, reduces thermal stress and gas backflow, and extends the service life of the heat insulation screen.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention discloses a corrugated plate cooling device and its application, belonging to the field of aero-engines. It includes a cold-side corrugated plate, a hot-side corrugated plate, and hollow baffle columns. The cold-side corrugated plate is located on one side of the cold air passage, and the hot-side corrugated plate is located on the other side of the high-temperature gas passage. The two corrugated plates are staggered, with the crests corresponding to the troughs. A gourd-shaped intermediate channel with a periodically changing cross-sectional area is formed between the two corrugated plates. Several hollow baffle columns are arranged between the cold-side and hot-side corrugated plates, connecting the cold air passage and the high-temperature gas passage through hollow holes within the columns. The hollow baffle columns connect with the troughs of the cold-side corrugated plate and the crests of the hot-side corrugated plate. This invention employs a cooling structure combining double-layer corrugated plates and hollow baffle columns, fully utilizing the advantages of internal convection cooling and the corrugated plate itself.
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Citation Information

Patent Citations

  • Corrugated board heat shield with water-cooling curtain wall

    CN109595591A