High-temperature flow field whole-process water-cooling bent frame

Abstract

The invention relates to a high-temperature flow field whole-process water-cooling bent frame. The bent frame comprises a main frame body, a windward plate, a plurality of pitot pressure probes, a plurality of total temperature probes, a water pipe, a triangular supporting frame and a connecting strut, wherein the windward plate is fixedly connected to one side of the main frame body, the triangular supporting frame and the connecting strut are fixedly connected to the other side of the main frame body, the plurality of pitot pressure probes and the plurality of total temperature probes are fixedly connected to the windward plate at intervals, the water pipe is erected at the bottom of the main frame body, side water channels are formed in the two sides of the main frame body, a front water channel is formed in the front end face of the windward plate, the water pipe comprises a water inlet pipe part and a water outlet part, the water inlet pipe part communicates with the bottom of theside water channel in one side of the main frame body, the top of the side water channel in one side of the main frame body communicates with the top of the front water channel and the top of the side water channel in the other side of the main frame body, and the bottom of the front water channel and the bottom of the side water channel in the other side of the main frame body communicate with the water outlet pipe part. The bent frame has the advantages that the bent frame can work normally in a 3,100K flow field, ablation of the bent frame is avoided, and meanwhile ideal flow field data isobtained.

Description

technical field [0001] The invention relates to the technical field of wind tunnel flow field calibration and measurement, in particular to a whole-process water-cooled bent frame for a high-temperature flow field. Background technique [0002] In a hypersonic wind tunnel, in order to prevent the gas from condensing due to the low static temperature under the condition of high Mach number, the gas needs to be heated. Under the condition of Mach number 20, the heating temperature should reach 3100K; in order to obtain the flow field Uniformity, Mach number distribution, temperature distribution and other indicators, the total temperature and Pitot pressure measurement of the wind tunnel flow field are generally carried out by using the bent frame, which is also an important content and method of flow field calibration; among them, for the low total temperature In wind tunnels, the structural design of measuring bent frames generally does not consider the ablation problem, and...

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Problems solved by technology

[0003] There are two main methods to solve the ablation problem of bent racks, one is to use ablation-resistant materials, and the other is to design a water-cooled structure to cool the bent racks; the use of ablation-resistant materials can partially solve the ablation problem, but the resistance The ablation temperature is limited, the material price is high, and the overall temperature of the bent frame rises, which is not conducive to the protection of the internal temperature measuring wire and pressure measuring conduit; the water-cooled bent frame needs to be solved in the design process, such as the water cooling effect and the size of the bent frame. The problem is that if the design of the water channel is unreasonable, the water cooling effect may not be achieved, resulting in local ablation, or the design size of the bent frame may be too large, resulting in blockage of the flow field, and the flow field parameter measurement test cannot be completed

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