Large-diameter high-speed liquid jet impact test device

A liquid jet and impact test technology, which is applied in the direction of applying repeated force/pulsation force to test the strength of materials, can solve the problems of not seeing the liquid jet impact test device, etc., to avoid test accidents, save costs, and realize adjustability Effect
CN104535440AInactive Publication Date: 2015-04-22XI AN JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XI AN JIAOTONG UNIV
Publication Date
2015-04-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a large-diameter high-speed liquid jet impact test device which comprises a test bed rack, a jet power device, a power bracket device, a liquid jet device, a sample clamping device and an observation device, wherein the jet power device is positioned on the rear side of the test bed rack and is clamped by the power bracket device; the liquid jet device is positioned in front of the jet power device and is fixed on the test bed rack by virtue of a bolt, a liquid nozzle rack is arranged at the front end of the liquid jet device, and a sleeve rack through which only a nylon rod is allowed to penetrate is arranged at the rear end of the liquid jet device; the sample clamping device is positioned in front of the liquid jet device, and a rectangular groove is formed in the middle of the device and is used for clamping the sample; and the observation device is used for observing the speed and diameter of liquid jet. The device can be used for researching notch damage generated by different materials under the impact of high-speed drops of different diameters, the analysis experiment result can guide material selection of wet-steam region steam turbine vanes and other mechanical parts which operate in a water erosion environment, and the test device has significant academic value for further researching the liquid-solid high-speed impact mechanism.
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Description

【Technical field】

[0001] The invention relates to the technical field of erosion experiments, in particular to a liquid jet impact test device. 【Background technique】

[0002] Liquid-solid high-speed impact phenomenon widely exists in various engineering fields, such as the long blades of the last stage of high-power supercritical and ultra-supercritical steam turbines and most of the blades of nuclear power steam turbines work in the wet steam area, and the primary water droplets formed by condensation in the flow The water film is deposited on the surface of the stationary blade, and due to the entrainment effect of the high-speed steam flow, the water film is torn on the steam outlet side of the stationary blade to form larger secondary water droplets. Continuous impact on the back arc causes water erosion damage. When the aircraft passes through clouds and rain areas at high speed, the surface material is vulnerable to the impact of water droplets. The extremely high r...

Claims

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