Device for measuring sample thermo-physical property in situ

Abstract

The invention discloses a device for measuring the sample thermo-physical property in situ, comprising a reaction kettle internally provided with a tested sample, a gas supply system for providing a gas source for the reaction kettle, a temperature control system for maintaining the reaction temperature in the reaction kettle, a hydraulic driving system connected with the reaction kettle and a measurement and control acquisition system connected with the reaction kettle and used for testing the thermo-physical property of the sample, wherein a background material of which the thermal conductivity is less than that of the tested sample is arranged at the bottom inside a barrel of the reaction kettle, and the measurement and control acquisition system comprises a thermo-physical test probe which is inserted between the tested sample and the background material. By adopting a single-side test structure of the thermo-physical test probe, the thermo-physical property test to different samples can be carried out, and the test speed is fast; the thermo-physical property parameters of the sample under different temperatures and pressures can be measured as the temperature and the pressure are respectively regulated; the reaction extent test is carried out according to the change of the thermo-physical property parameters during the chemical reaction; and the system has definite functions of all parts, favorable upgradability and expandability as well as wide adaptability.

Description

Technical field [0001] The invention relates to a device for in-situ measurement of thermal properties of a sample, in particular to a device for in-situ measurement of thermal properties such as liquid, solid or solid-liquid mixture under high pressure or in a chemical reaction, thermal diffusivity and specific heat capacity . Background technique [0002] The thermophysical properties of materials are one of the very important physical properties of materials, and they are an important basis for evaluating material properties and calculating material heat transfer. Among them, thermal conductivity, thermal diffusivity (temperature conductivity) and specific heat are the three most critical parameters. As important physical parameters of substances, they have important applications in the fields of chemical engineering, energy, power engineering, etc. They are essential basic data in many industrial processes and product designs. [0003] The thermal conductivity of a substance ...

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Problems solved by technology

The method used in the invention patent 200410051811.0 is easy to damage the probe during use, and it is difficult to ensure that the probe remains flat during the test

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