A gland structure for compression packing in turbine outer ring flow test

By designing a pressure sealing cap structure for turbine outer ring flow test, the problem of sealing the sides of the turbine outer ring was solved, achieving efficient sealing and rapid unsealing, ensuring the accuracy of test data and the reliability of equipment.

CN117927666BActive Publication Date: 2026-06-02BEIHANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIHANG UNIV
Filing Date
2024-01-24
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

There is a lack of existing technologies for a method to quickly and effectively seal and unseal the four sides of the turbine outer ring, especially when the turbine outer ring has a complex structure and strong throttling, making it difficult to achieve accuracy and reliability in the sealing test of the film pore.

Method used

A pressure cap structure for pressing and sealing in turbine outer ring flow test was designed, including an outer ring bottom baffle structure and multiple sealing and pressing blocks. The outer ring is stably fixed and the gas film hole is efficiently sealed by bolt connection. The metal material is used to adapt to high temperature and high pressure environment.

Benefits of technology

This technology enables stable fixation of the turbine outer ring and efficient sealing of the film gas vents, ensuring the accuracy of flow tests, improving test efficiency, reducing costs, and enhancing the reliability and ease of maintenance of the equipment.

✦ Generated by Eureka AI based on patent content.

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    Figure CN117927666B_ABST
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Abstract

This invention relates to the field of sealing device technology, specifically to a pressure cap structure used for compression sealing in a turbine outer ring flow test, comprising: an outer ring bottom baffle structure in contact with the bottom surface of the turbine outer ring; a right-side sealing and pressing block connected to the outer ring bottom baffle structure and fixed to the left and right sides of the turbine outer ring for sealing the left and right side air film holes; a front edge fixing block and a rear edge fixing block connected to the outer ring bottom baffle structure by bolts and fixed to the front and rear edges of the turbine outer ring; and a front edge sealing block and a rear edge sealing block fixed to the front and rear edge fixing blocks for sealing the front and rear edge air film holes. This invention provides a strong sealing structure on both sides of the turbine outer ring circumferentially and can easily and quickly seal and unseal the front and rear edge holes, reducing costs while improving the reliability and ease of maintenance of the equipment.
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