Thermostat device capable of performing continuous variable temperature control in wide temperature zone

Abstract

The invention discloses a thermostat device capable of performing continuous variable temperature control in a wide temperature zone, which comprises a low-temperature refrigerating system, a sample cavity assembly, a heat insulation assembly and a sample temperature control system. A sample rod body (43) in the sample cavity assembly is provided with a sample temperature sensor (54) and a sample heater (55) which are respectively connected with a temperature controller (57) in the sample temperature control system, the temperature controller (57) is connected with an upper computer (56) through a circuit, and the upper computer (56) performs PID closed-loop control on the sample temperature sensor (54) and the sample heater (55) through the temperature controller (57). A static helium pressure sensor (64) connected with the upper computer (56) is arranged on a static helium pipeline communicated with a static helium interface (47) in the sample cavity assembly. The device disclosed by the invention can realize continuous variable temperature control in a wide temperature zone of 2-800K, and meets the requirements of the current high-end physical property measurement field.

Description

technical field [0001] The present invention belongs to the field of low-temperature instrumentation, low-temperature temperature control method and physical property measurement technology research field, and specifically relates to a thermostat based on a small-sized low-temperature refrigerator and using liquid helium throttling for cooling, which can carry out continuous variable temperature control in a wide temperature range device. Background technique [0002] Cryostats with temperature scanning function are often used in the field of physical property measurement. With the continuous development of material technology, more and more new materials have been successfully developed. In order to verify the properties of these materials, it is a very necessary link to carry out physical property measurement. However, the application fields of these materials are very wide, and it is often necessary to measure their physical properties in a large range under the conditio...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of narrow temperature range, high lower limit of temperature range, and discontinuous temperature change of existing cryostats, and provide a low-temperature refrigerator based on a small cryogenic refrigerator that uses liquid helium throttling for cooling and can perform wide temperature range continuous cooling. The thermostat device with variable temperature control has a more open design, which is convenient for external physical fields to meet the requirements of various physical property measurement environments

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