Railway contact net icing reproduction supercooled liquid drop spraying device and design method

By designing a railway catenary icing reproduction device with multi-specification nozzles and precise flow control, the problem of inaccurate simulation by existing devices has been solved, achieving high-fidelity simulation of the railway catenary icing process and improving the repeatability and accuracy of the test.

CN121703552APending Publication Date: 2026-03-20CENT SOUTH UNIV
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Patent Information

Application Number
CN202610035078.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-12
Publication Date
2026-03-20

AI Technical Summary

Technical Problem

Existing railway catenary icing test devices cannot accurately simulate the impact of supercooled droplets and the evolution of icing shapes. The design of spray devices lacks scientific guidance, making it difficult to reproduce complex wind and rain coupling conditions. Furthermore, it is impossible to accurately control rainfall intensity and droplet spectrum, resulting in poor simulation fidelity and comparability.

Method used

A railway catenary icing simulation supercooled droplet spraying device was designed, comprising a nozzle array, water supply pipeline, background wind field components, auxiliary wind field components, and a control system. By using nozzles of various specifications, independent water supply branches, and precise flow control, combined with background and auxiliary wind fields, the device simulates the train operating environment and achieves precise control of droplet size distribution and rainfall intensity.

Benefits of technology

It achieves high-fidelity simulation of the icing process of railway catenary, improves the repeatability and accuracy of the test, can accurately reproduce the asymmetric dynamic icing morphology, has strong parameter adjustability, high degree of integration, strong adaptability, and good scientific design method and scalability.

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Abstract

The invention relates to the technical field of railway contact net icing tests, in particular to a railway contact net icing reproduction supercooled liquid drop spraying device and a design method, and the device comprises a nozzle array, a water supply pipeline, a water tank, a background wind field assembly, an auxiliary wind field assembly and a control system. According to the invention, the M-P distribution spectrum of natural freezing rain can be macroscopically reproduced, so that the icing physical process is highly real, the optimized array layout ensures that the rain field distribution of the test section is uniform, the test repeatability and precision are high, and the real pneumatic environment and liquid drop collision process during train operation can be controlled and simulated through the background wind field. In addition, in cooperation with the auxiliary wind field assembly, accurate control over the end speed when liquid drops impact the contact network is achieved, and the defect that in the prior art, liquid drop impact energy simulation is insufficient is overcome. The railway contact net icing reproduction supercooled liquid drop spraying device provided by the invention is high in design method scientificity and expansibility.
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