A sensor for temperature and heat flow measurement in high temperature environment

Abstract

The invention discloses a sensor for temperature and heat-flow measuring under a high temperature environment. The sensor comprises a protection case body and measurement assemblies. The two sets of measurement assemblies are arranged on a fixation base, which is arranged on the front end face of the protection case body, in the same way; a cooling jacket in each measurement assembly is arranged in a through-hole of the fixation base; and an inlet pipe and an outlet pipe, which are internally and externally sleeve-connected, are arranged in the cooling jacket. Measurement columns, each of which is externally coated with a heat-insulation inner sleeve and a heat-insulation outer sleeve respectively, are fixedly arranged on the front end face of the fixation base; and the middle part of each measurement column is connected with an electric heating terminal of one thermocouple and the real part of each measurement column is connected with an electric heating terminal of one thermocouple. The sensor for temperature and heat-flow measuring is formed through the said structure; through double thermopiles, heat-flow, that reaches the end faces of the measurement columns, can be measured, besides, temperature of gas or solid that is contacted with the end faces of the measurement columns can be measured; the sensor, which can work under the high temperature environment, with the highest working temperature up to 1300 DEG C, can realize a two-parameter measurement of the temperature and the heat-flow.

Description

technical field [0001] The present invention relates to a sensor, specifically, a dual-purpose sensor for temperature and heat flow that can be used in a high-temperature environment (the temperature can reach 1300°C), and can be used for temperature or heat flow measurement of gases and solids. Background technique [0002] Spacecraft engines such as rockets and airplanes are the soul of spacecraft. The research on these engines has been going on, and the thermal protection of the engines is one of the research focuses. [0003] Heat flow and temperature are two important parameters for thermal protection. However, due to the high temperature of the gas in the engine, which can reach thousands of degrees Celsius, most of the existing high-temperature heat flow sensors do not exceed 800°C, which cannot meet the requirements of long-term measurement; at the same time The engine wall temperature is also very high, up to thousands of degrees Celsius, and the direct temperature ...

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Problems solved by technology

[0003] Heat flow and temperature are two important parameters for thermal protection. However, due to the high temperature of the gas in the engine, which can reach thousands of degrees Celsius, most of the existing high-temperature heat flow sensors do not exceed 800°C, which cannot meet the requirements of long-term measurement; at the same time The temperature of the engine wall is also very high, up to thousands of degrees Celsius, and the direct temperature measuring devices on the market cannot meet the measurement requirements

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