Air purging device for infrared thermometer

Abstract

The invention discloses an air purging device for an infrared thermometer. A device body is located at the front end of the infrared thermometer; the infrared thermometer is installed on a high-speedgear box through an adjusting support; the device body is of a triple-concentric cylindrical pipe body structure with the end provided with fixing rings for connection; a middle pipe is embedded in anouter side pipe and forms an outer side annular cavity with the outer side pipe; an inner side pipe is located in the middle pipe and forms an inner side annular space with the middle pipe; and a middle cavity of the inner side pipe is a light path channel; high-pressure gas enters the outer side annular cavity and the inner side annular space through an gas inlet; high-pressure gas forms an annular gas wall through an outer side purging structure to prevent an interference medium from entering a to-be-detected area; and the interference medium in the to-be-detected area can be blown away through an inner side purging structure; a light-transmitting glass sheet in an infrared light path structure can prevent an interference medium from entering the lens of the thermometer; and the temperature of the to-be-detected area is measured through infrared light passing through the infrared light path structure; and the measurement precision and use reliability of the thermometer are improved.

Description

technical field [0001] The invention relates to a non-contact optical temperature measuring device, in particular to a device for preventing external interference medium from flowing into or being brought into the area to be measured and the optical path of infrared temperature measurement by airflow, and can reduce the flow of gas to cool the area to be measured. or heating device. Background technique [0002] In a high-speed gearbox system, the tooth surface of the gear is always in the process of dynamic meshing, so it is impossible to directly arrange a contact thermocouple sensor on the tooth surface or tooth root for temperature measurement without damaging the gear body and affecting the gear transmission performance. Non-contact infrared temperature measurement technology can focus the light beam on the detector through its optical system without destroying the temperature field of the measurement target, collect the infrared electromagnetic radiation of the measure...

AI Technical Summary

Problems solved by technology

In addition, higher pressure gas may also cause the light-transmitting glass sheet on the optical path of the infrared thermometer to be fractured

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