临近空间环境下小型风机P-Q曲线性能测试装置与方法
By designing a test device that combines a vacuum pump and a loop-shaped sealed pipeline with a variable cross-section pipeline, and employing a dual-flow coupling calibration method, the problem of PQ curve testing for small fans in low-pressure environments near space was solved, achieving high-precision test results and compatibility with multiple fan models.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NO 30 INST OF CHINA ELECTRONIC TECH GRP CORP
- Filing Date
- 2025-11-06
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies make it difficult to accurately test the PQ curve of small wind turbines in the low-pressure environment of near space, mainly due to the lack of a measurable low-pressure environment of 5 kPa, poor compatibility of testing equipment, and insufficient measurement accuracy caused by low Reynolds number.
A testing device including a vacuum pump and a loop-shaped sealed pipeline was designed. The air pressure inside the pipeline is adjusted by the vacuum pump. Combined with variable cross-section pipeline and Pitot tube testing, a dual flow coupling calibration method is adopted to achieve accurate testing of small fans in low-pressure environments.
It enables accurate testing of PQ curves for small fans in near-space low-pressure environments, improving the accuracy and reliability of test results, reducing testing costs, adapting to fans of different sizes, and meeting testing requirements under low-pressure and low-flow conditions.
Smart Images
Figure CN121429630B_ABST