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Reliability testing device for ablation-resistant materials

An inspection device and ablation-resistant technology, applied in jet propulsion devices, rocket engine devices, machines/engines, etc., can solve the problems of high inspection cost and lack of popularity, and achieve convenient operation, guaranteed service life and simple structure. Effect

Inactive Publication Date: 2020-04-10
NANJING UNIV OF SCI & TECH
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Problems solved by technology

This method can only study the influence of pulse interval time on the ablation characteristics of thermal insulation materials, and the detection cost is high and it is not universal

Method used

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  • Reliability testing device for ablation-resistant materials

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Embodiment Construction

[0016] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0017] With the development of technologies such as hypersonic vehicles and transcendental ramjet engines, there are great requirements for the ablation resistance of materials. Therefore, the requirements for the reliability detection technology of ablation-resistant and heat-insulating materials are also increasing. At present, the reliability detection device for ablation-resistant heat insulation materials is only suitable for steady-state long-term ablation conditions, without considering the influencing factor of pressure, and lacks short-term and variable load ablation of ablation-resistant heat insulation materials Reliability test device for shock detection.

[0018] Therefore, the present invention proposes a new reliability detection device for ablation-resistant materials.

[0019] combine figure 1 , a reliability testing device for ablation-res...

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Abstract

The invention discloses a reliability testing device for ablation-resistant materials, and relates to the technical field of reliability detection. Ablation impact detection on ablation-resistant heat-insulation materials for a short time and with a variable load is mainly carried out. The reliability testing device for the ablation-resistant materials is mainly composed of three components of a combustion chamber, a spray pipe seat and spray pipes, high-temperature and high-pressure gas generated in the combustion chamber is used for turning by 90 degrees in the spray pipe seat to ablate andimpact the ablation-resistant materials, and by replacing the spray pipes with different throat diameters, the reliability of the ablation-resistant materials under the combined effect of different pressure and temperature can be simulated. The reliability testing device has a simple result and can perform ablation impact detection on test pieces in a short time, and the device is internally coated with a heat insulation layer, so that the service life of the reliability testing device is greatly guaranteed; and in addition, the types and sizes of propellants used in the combustion chamber aredifferent, the ablation impact detection under different working pressure and time can be simulated, more comprehensive testing can be carried out on the test pieces, and the efficiency of the reliability test of the ablation-resistant materials is greatly improved.

Description

technical field [0001] The invention belongs to reliability detection technology, in particular to a reliability detection device for ablation-resistant materials. Background technique [0002] Patent CN110044947A discloses a "reliability detection device for ablation-resistant heat insulation material", and the reliability detection device provided by it includes a mounting seat, a runner mechanism, a mounting part of a test piece and a flame eruption mechanism; the runner mechanism is located on The mounting seat, the wheel mechanism includes a wheel, the wheel can be rotatably arranged; the installation part of the test piece is arranged on the wheel, and the installation part of the test piece has a preset distance from the central axis of the wheel, and is used for installing the test piece; The flame eruption mechanism is arranged on the installation seat, and the flame eruption mechanism includes a spray head, and the spray head is aligned with the installation part o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02K9/96
CPCF02K9/96
Inventor 秦鋆郑健陈雄周长省孙辉
Owner NANJING UNIV OF SCI & TECH
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