Measuring structure of thermocouple burning rate for wall-mounted pouring charge

Abstract

The invention belongs to the technical field of solid fuel ramjets and particularly relates to a wall-adherent powder loading thermocouple burning speed measuring structure. The wall-adherent powder loading thermocouple burning speed measuring structure comprises a thermocouple, a head welding spot extends to a certain position inside a grain, when a burn surface regresses to be in contact with the head portion of the thermocouple, the thermocouple outputs temperature increase signals, and then an operator can acquire the time between the position change of the burning surface and ignition andfurther acquire the regressing speed of the burning surface at the position. The wall-adherent powder loading thermocouple burning speed measuring structure has the advantages that the thermocouple is applied to target wire measurement, thereby solving the difficult problem of poor reliability of measurement of the burning speed of the powder loading burning surface of a solid fuel ramjet; by means of the integrated thermocouple as the target wire measurement target, the wall-adherent powder loading thermocouple burning speed measuring structure is convenient to mount, simple in structure andreliable to use and effectively achieves measurement of the burning surface regressing rules of wall-adherent powder loading.

Description

technical field [0001] The invention belongs to the technical field of solid fuel ramjet engines, and in particular relates to a thermocouple combustion rate measurement structure for wall-mounted pouring medicine. Background technique [0002] During the working process of the solid fuel ramjet engine, the incoming high-speed air flow passes through the compression surface of the intake port and the shock wave system is decelerated and pressurized into the combustion chamber and then flows through the surface of the powder column. The powder is heated and decomposed and mixed with air to burn and release heat. After the gas flows through the supplementary combustion chamber for further combustion and heat release, it is finally accelerated out of the engine through the nozzle to generate thrust. Therefore, in order to obtain the performance of the solid fuel ramjet engine, it is necessary to conduct a ground test on a direct-connected test bench. Simulate the corresponding...

AI Technical Summary

Problems solved by technology

The reliability of the original target line scheme is low. The main problem of the first one is whether the target line can accurately transmit the fusing signal when the flame burns to the front.

Due to the turning of the target line, the approach loops are very close together, and the burning temperature of the flame is very high. It is possible that the target line after the turning point will be melted together, or the plasma field in the flame will conduct electricity, making the loop conductive and unable to return normally. Signal

The problem with the second solution is the opposite. The reliability of the plasma conduction on the burning surface needs to be verified. Whether it can conduct the conduction back to the channel signal or the power supply may be unstable, and the signal cannot be recognized.

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