Adjustable infrared temperature measuring device

Abstract

The invention relates to the technical field of temperature measuring devices, and particularly relates to an adjustable infrared temperature measuring device which comprises a sealing cover, a circuit detector, a first optical cavity, a diaphragm, a second optical cavity and a protective cover. The lower end of the circuit detector is connected with the sealing cover, and the upper end of the circuit detector is connected with the lower end of the first optical cavity. The diaphragm is arranged on the inner side of the top of the first optical cavity, diaphragms with different outer diameters and inner diameters can be selected as the diaphragms, the upper end of the first optical cavity is connected with the lower end of the second optical cavity, and the upper end of the second optical cavity is connected with the protective cover. Compared with the prior art, the diaphragms with different outer diameters and inner diameters are arranged in the first optical cavity I, the effect of obtaining the maximum infrared signal can still be guaranteed under the conditions of different sizes of targets and limited field angles and devices, a guarantee is provided for obtaining the continuous and stable molten steel temperature, and then the steel manufacturing efficiency and quality are improved.

Description

technical field [0001] The invention relates to the technical field of temperature measuring devices, in particular to an adjustable infrared temperature measuring device. Background technique [0002] The iron and steel industry is the basic industry of the country. The continuous measurement of molten steel temperature is the premise of improving the automation level of iron and steel smelting, and is the key to ensuring the quality of steel, improving efficiency and reducing energy consumption. However, the intermittent temperature measurement of consumable fast couples cannot achieve continuous temperature measurement. The thermal radiation continuous temperature measurement method developed in recent years has attracted widespread attention because it does not directly contact molten steel and can greatly reduce the risk of high-temperature corrosion damage. There are problems such as complicated line and data acquisition, and cumbersome installation. [0003] Therefor...

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Problems solved by technology

However, the targets that need to be tested in the steelmaking plant are large or small. If the temperature measurement sensor only has the best response to one temperature measurement target, it is obviously unable to meet the test tasks of multiple conditions. The traditional test method is the infrared temperature measurement device. The aperture is non-adjustable. Even if the target is larger, it is impossible to obtain the maximum signal by changing the aperture due to the limitations of the field of view and the device.

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