Micro leakage diagnosis system of cooling water of arc heater

A technology of arc heater and diagnostic system, which is applied in the direction of detecting the presence of fluid at the leak point, testing aircraft components, and using liquid/vacuum for liquid tightness measurement, etc., to achieve improved accuracy and sensitivity, and clear characteristic lines , the effect of good system reliability

Inactive Publication Date: 2019-11-05
INST OF MECHANICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] For this reason, the embodiment of the present invention provides a micro-leakage diagnosis system for arc heater cooling water. The diagnosis system for arc heater cooling water micro-leakage is accurate, fast response, high sensitivity, and low cost, which can solve the current micro-leakage of arc heaters. Quick and accurate diagnosis when it occurs, greatly improving the safety of equipment operation

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  • Micro leakage diagnosis system of cooling water of arc heater
  • Micro leakage diagnosis system of cooling water of arc heater
  • Micro leakage diagnosis system of cooling water of arc heater

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Embodiment Construction

[0030] The implementation mode of the present invention is illustrated by specific specific examples below, and those who are familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this description. Obviously, the described embodiments are a part of the present invention. , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] Such as figure 1 As shown, the present invention provides a micro-leakage diagnosis system for arc heater cooling water, comprising an arc heater 1, a radiation measurement clip 2, a nozzle 3, a Y-shaped quartz optical fiber 4, a narrow-band filter 5, and a photomultiplier tube 6 , a data processing unit 7 .

[0032] The test gas is heated by the arc generated by the arc heater 1 through...

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Abstract

The invention discloses a micro leakage diagnosis system of cooling water of an arc heater. The system comprises an arc heater, a radiation measurement clamping piece, a jet pipe and a data processingunit; the arc heater and the radiation measurement clamping piece collect high-temperature gas radiation luminescence in an arc chamber of the arc heater; and high temperature gas radiation luminescence collected by the radiation measurement clamping piece enters a Y-shaped quartz fiber divided into two paths, pass two narrowband filter plates in different central wavelengths, and then transmitted to two photomultipliers respectively, after photoelectric conversion by the photomultipliers, a narrowband radiation signal is converted into the voltage signal, the voltage signal is transmitted toa data processing unit for analysis, and real-time output voltage values of the two photomultipliers are obtained. Thus, micro water leakage of the arc heater can be diagnosed rapidly and accurately,and the running safety of equipment is improved greatly.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of aircraft ground aerodynamic thermal test research, in particular to a micro-leakage diagnosis system for arc heater cooling water. Background technique [0002] The arc heater can reproduce the main thermal parameters (total enthalpy, heat flow, etc.) of the aircraft during high-speed flight. Since the 1950s, it has been the preferred test equipment for the screening of heat-resistant materials and the assessment of thermal protection systems for hypersonic aircraft. The arc heater generates an arc and heats the test gas through the high voltage applied to both ends of the electrode. Due to the combined effect of the huge heat flow generated by the high voltage and high current on the electrode and the high temperature gas flushing in the heater, it will inevitably lead to arc heating. The ablation of the device electrode and its metal parts. In order to improve the working reli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/20B64F5/60
CPCB64F5/60G01M3/20
Inventor 林鑫李飞余西龙欧东斌曾徽
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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