Tube plate type air preheater

By designing a driving mechanism in the tube-plate air preheater to drive the rotation of the sleeve and scraper, online ash cleaning is achieved, solving the problems of lower heat exchange efficiency and increased smoke exhaust temperature caused by soot accumulation, and improving operational convenience and heat exchange efficiency.

CN222911691UActive Publication Date: 2025-05-27雷林工程技术有限公司
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Patent Information

Application Number
CN202421787219.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-26
Publication Date
2025-05-27
Estimated Expiration
2034-07-26

AI Technical Summary

Technical Problem

The existing pipe-plate air preheater is prone to accumulation of soot during use, resulting in a decrease in heat exchange efficiency and an increase in smoke exhaust temperature. Currently, ash cleaning mainly relies on manual operation, which is time-consuming and labor-intensive and inconvenient.

Method used

A pipe plate-type air preheater is designed, using a driving mechanism to drive the sleeve to rotate, and the scraper is used to fit the inner wall of the smoke pipe to achieve online dust cleaning. The device includes a support plate, upper and lower pipe plates, smoke pipes, casings and scrapers. The rotation of the sleeves and scrapers is driven by driving components such as stepper motors and gear systems to clean up the ash accumulation in the inner wall of the smoke pipe.

Benefits of technology

It realizes online dust removal, is easy to operate, improves heat exchange efficiency, reduces smoke exhaust temperature, and the scraper is removably connected to the sleeve for easy replacement and maintenance.

✦ Generated by Eureka AI based on patent content.

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    Figure CN222911691U_ABST
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Abstract

The utility model discloses a tube plate type air preheater, which belongs to the technical field of preheaters and comprises two support plates, an upper tube plate and a lower tube plate are fixedly connected between the two support plates, a plurality of smoke tubes are arranged between the two support plates, and two ends of each smoke tube are fixedly connected with the upper tube plate and the lower tube plate respectively. Two sleeves are rotatably connected outside the smoke tube, the two sleeves are rotatably connected with the lower tube plate and the upper tube plate respectively, a plurality of scraping strips are detachably connected between the two sleeves, and the scraping strips are located in the smoke tube and slide on the inner wall of the smoke tube in an attached mode; a plurality of driving mechanisms are arranged on the lower tube plate, are in one-to-one correspondence with the plurality of smoke exhaust tubes, and are in transmission connection with the plurality of sleeves positioned on the same smoke exhaust tube. The device can realize on-line ash removal and is convenient to operate, so that the heat exchange efficiency is improved, and the smoke exhaust temperature is reduced; and the sleeve is detachably connected with the scraping strip, so that the scraping strip is convenient to replace when damaged.
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