Triple point recurrence device with refrigerating machine serving as cooling source

Abstract

The invention relates to a triple point recurrence device with a refrigerating machine serving as a cooling source. The triple point recurrence device with the refrigerating machine serving as the cooling source comprises a measuring room and the refrigerating machine. The measuring room is used for offering measuring spaces of a thermometer to be measured, a standard thermometer and a triple point bottle. The refrigerating machine offers cooling capacity for the triple point recurrence device. In the triple point recurrence device, heat balance among a cooling head, a temperature control copper block and a heat evening block, so that materials in the at least one triple point bottle are in a triple point state and calibration of temperature is conducted. According to the triple point recurrence device with the refrigerating machine serving as the cooling source, operation of the refrigerating machine only needs maintenance of water and electricity, so that operation cost is low; the refrigerating machine serves as the cooling source so that dependence on liquid helium and supply limitation of the liquid helium can be eliminated. The triple point recurrence device with the refrigerating machine serving as the cooling source is compact in structure, easy to move and capable of conducting low temperature calibration tests at any time anywhere, and has notable advantages.

Description

technical field [0001] The invention relates to a triple point reproducing device, in particular to a triple point reproducing device using a refrigerator as a cold source. Background technique [0002] The triple point of low-temperature gas mainly refers to the phase equilibrium point when hydrogen, neon, oxygen, argon and other substances are used as fixed point materials in the coexistence of gas phase, liquid phase and solid phase. Due to the existence of latent heat of phase change, it is relatively easy to obtain a long-term phase change temperature plateau (the temperature remains constant or slightly changes for a period of time) by adiabatic method, that is, the temperature and pressure at equilibrium are basically not affected by the gas phase, The influence of the percentage of sample volume in liquid and solid phases. According to this characteristic of the triple point of low-temperature gas, the temperature measurement industry uses sealed bottle technology t...

AI Technical Summary

Problems solved by technology

[0006] This patent aims to solve the problems of lack of liquid helium, complicated operation, and difficult temperature control faced by traditional cryogenic gas triple point reappearance devices

Images