Heat meter sample cell with sample change convenience, high sample change speed and good sealing performance

Abstract

The invention discloses a heat meter sample cell with sample change convenience, high sample change speed and good sealing performance. The heat meter sample cell has the highest work temperature of 600K, and can be conveniently and reliably fixed in a heat meter. The sample cell concretely comprises a metal gasket, a sample cell main body, thermocouple sheaths, a hollow hexagonal nut and a solidcylinder, wherein the metal gasket has the set dimension and hardness (mechanical strength); the sample cell main body is a cylindrical barrel body; a cylindrical trap extending into the barrel body is arranged in the center position of the bottom for placing a thermometer-heating unit; the upper part of the barrel body is provided with a sealing bearing module; the thermocouple sheaths are symmetrically welded at the side surface of the sample cell; an upper hole is provided with an inward annular clamp groove; the upper part of the solid cylinder is provided with a hanging hole so as to hangthe sample cell; the lower part of the solid cylinder is provided with an annular epitaxy buckled with the annular clamp groove; the sealing bearing module is a hollow cylinder, wherein the lower part is in a hexagon rectangle shape, the main body is screw threads, and a knife edge is formed in the top. The heat meter sample cell has the advantages that the structure is compact; the design is novel; the sealing is tight; the sample change is convenient; the use is flexible.

Description

technical field [0001] The invention belongs to a calorimetric device in calorimetry, specifically a sample pool of a thermal insulation heat device with convenient sample change and good sealing performance, which has excellent sealing performance, convenient sample replacement, and can work normally at a high temperature of 600K. The feature of convenient and firm fixing. Background technique [0002] Heat capacity is the sum of the energy contributions of the internal lattice, electrons and other moving forms of the material system, and is a basic thermophysical parameter of matter. Through the accurate measurement of heat capacity, basic thermodynamic data such as enthalpy, entropy, and Gibbs free energy of matter can be obtained, and the structure and phase transition of matter can be understood, as well as the lattice vibration, electronic energy level transition of the microscopic structure of matter, and understanding of superconducting phenomena, magnetism, etc. can...

AI Technical Summary

Problems solved by technology

However, the sample pools of the first two adiabatic calorimeters were sealed by cutting off the capillary, which was complicated to operate, and the repeatability and reliability were poor; It is closely connected with the heat insulation screen, which is not conducive to the control of heat leakage and affects the accuracy of the instrument

At the same time, the maximum temperature of these three calorimetric devices does not exceed 550K, which seriously affects their application

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