A blow-off model pressure measuring device

By designing stepped hole structures and welding bevels on the model body and pressure measuring steel sleeve, and combining them with high-strength stainless steel, the problems of low accuracy and poor airtightness of existing pressure measuring devices were solved, and high-precision wind tunnel test data acquisition was achieved.

CN224354057UActive Publication Date: 2026-06-12CHENGDU KAIDI SEIKO TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHENGDU KAIDI SEIKO TECH CO LTD
Filing Date
2025-05-16
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

Existing pressure measuring devices suffer from low machining accuracy, poor airtightness, and insufficient assembly reliability in wind tunnel testing, resulting in large errors in test data and making it difficult to meet the requirements of high-precision wind tunnel testing.

⚗Method used

A pressure measuring device for a blower model was designed. It adopts a structure in which a first step hole is opened on the model body and a second step hole is opened on the pressure measuring steel sleeve. The difference in hole diameter forms a welding positioning step to ensure that the pressure measuring tube and the pressure measuring hole are coaxially connected. Combined with high-strength stainless steel material and annealed stainless steel hose, the assembly efficiency and structural strength are improved, and the weld strength is ensured by the welding bevel design.

🎯Benefits of technology

It improves the assembly efficiency and structural strength of the pressure measuring device, reduces airflow resistance and pressure measurement data errors, and ensures the stability of the airflow boundary layer and the accuracy of test data.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224354057U_ABST
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Abstract

The utility model relates to aerospace wind tunnel test model technical field, the utility model provides a kind of blowing model pressure measuring device, including model body, pressure measuring steel sleeve and pressure measuring pipe, model body is equipped with first stepped hole, the large diameter section of first stepped hole is close to the pressure measuring end of model body, pressure measuring steel sleeve is cooperatively installed in the large diameter section of first stepped hole, pressure measuring pipe is worn from the small diameter section of first stepped hole, pressure measuring steel sleeve is equipped with second stepped hole, the small diameter section of second stepped hole is close to the pressure measuring end of model body, the small diameter section of second stepped hole is communicated with the pressure measuring position of model body, pressure measuring pipe is cooperatively installed in the large diameter section of second stepped hole, by being equipped with first stepped hole in model body, large diameter section assembly pressure measuring steel sleeve, small diameter section wear pressure measuring pipe, avoid extrusion;And second stepped hole is equipped in pressure measuring steel sleeve, small diameter section pressure, large diameter section welds pressure measuring pipe, aperture difference forms locating step, ensure coaxial butt joint, reduce resistance, improve assembly efficiency and structural strength.
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