High temperature thermostatic bath of high capacity and high precision

Abstract

The invention discloses a high temperature thermostatic bath of high capacity and high precision. The thermostatic bath comprises three parts: a thermostatic bath main body, a temperature control system and a temperature measuring system. The thermostatic bath main body mainly comprises an insulation material, 6 heating plates and a thermostatic medium. The temperature measuring system consists of a first precision platinum resistance thermometer, a temperature measuring device, a computer and an RS232 interface. The temperature control system includes a second precision platinum resistance thermometer and a temperature control unit. The outside wall of the thermostatic bath main body is provided with the insulation material, and the inside of the thermostatic bath main body is provided with the thermostatic medium, where the first precision platinum resistance thermometer and the second precision platinum resistance thermometer are both inserted. The first precision platinum resistance thermometer is connected to the temperature measuring device, which is in connection with the computer through the RS 232 interface. The second precision platinum resistance thermometer is connected to the temperature control unit that is in connection with the heating plates simultaneously. The high temperature thermostatic bath of the invention is completely ahead of high temperature thermostatic baths developed at home and abroad, and solves a major problem in high temperature fluid thermophysical property experiments, as well as overcomes the temperature scope restriction to the thermostatic medium in previous thermostatic baths.

Description

Technical field: [0001] The invention belongs to the field of research on thermophysical properties of fluids, in particular to research on thermophysical properties of high-temperature and high-precision fluids. Large-capacity high-precision high-temperature constant temperature bath is an experimental equipment that provides a constant high-temperature environment for the study of fluid thermophysical properties. Background technique: [0002] The constant temperature bath refers to the experimental equipment whose temperature can be adjusted and can be kept at a certain set temperature. All kinds of constant temperature baths are widely used in bioengineering, fine chemical industry, medicine, food, metallurgy, petroleum, agriculture and other fields. They are ideal constant temperature equipment for colleges and universities, research institutes and quality inspection departments. This paper studies the constant temperature bath suitable for the experimental measurement...

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Problems solved by technology

[0012] The precision of domestically produced constant temperature baths is not high, which seriously hinders the conduct of fluid thermophysical property experiments. However, although the constant temperature baths developed by foreign Fluke companies, such as 6022 and 6024, have good performance, their temperature range is limited, all at 300 °C Below, it can no longer meet the temperature requirements of the thermophysical property experiment of high temperature fluid, while the 6045 and 6050 constant temperature tanks have good performance, but their working volume is relatively small, which cannot meet the requirements of the fluid thermophysical property experiment.

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