Superhigh-temperature heating system with fast response

Abstract

The invention discloses a superhigh-temperature heating system with fast response, belonging to the technical field of designing of heating devices. A heating device comprises a quartz tube, tube holders and a tube mounting seat, wherein the quartz tube is horizontally mounted on the tube mounting seat through the tube holders; two ends of the tube mounting seat are respectively connected with a water cooling pipeline used for cooling the tube mounting seat and the tube holders; an air-cooling pipeline is composed of an air inlet pipeline and an air outlet pipeline; the air outlet of the air inlet pipeline and the air suction port of the air outlet pipeline are respectively arranged on two ends of the quartz tube, and form cooling air flow near the wall of the quartz tube; and a non-contact temperature measuring system collects the surface temperature of the quartz tube and sending the data of the surface temperature to a fan control system, and the fan control system adjusts the flowrate of cooling air in the air-cooling pipeline. The superhigh-temperature heating system provided by the invention ensures cooling of the quartz tube and can avoid influence on the temperature fieldof a test piece; and the adoption of active cooling control technology can improve refrigeration efficiency and refrigeration precision.

Description

Technical field [0001] The invention belongs to the technical field of heating device design, and specifically relates to a fast-response ultra-high temperature heating system. Background technique [0002] With the rapid development of the national aerospace industry and the country’s strategic needs, hypersonic aircraft, reusable vehicles and other aircraft are the hot spots of future research. The aircraft will experience severe aerodynamic heating during the flight, which will cause the temperature of the aircraft structure to rise, reduce the strength and structural rigidity of the material, and then affect the aircraft's carrying capacity. [0003] In recent years, as the flight speed of aircraft has increased, the surface of aircraft has been subjected to higher temperatures and greater heat flow. In order to verify the ability of aircraft to resist extreme thermal environments, ultra-high temperature environments (> 1600℃) heat strength test. In the past high temperatur...

AI Technical Summary

Problems solved by technology

In the previous high-temperature heat strength test, the radiation heater of the quartz lamp tube was usually used to apply the heat load, but the softening temperature of the material of the quartz lamp tube was about 1600°C. not possible

For this type of test, the usual method is to use graphite heaters, silicon-carbon heaters, and silicon-molybdenum heaters, but this type of heater has a large thermal inertia and a slow heating rate, and this type of heater can Oxidation is easy to occur. When the oxidation performance of the test object is not studied, a vacuum environment or a test environment filled with inert gas should be established.

In addition, no matter what kind of heater is used, for the case of ultra-high temperature (1600°C), when the power of the test environment is insufficient, it is even difficult to achieve an ultra-high temperature environment above 1600°C

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