Sapphire tube black body cavity optical fiber temperature measurement device

Abstract

The invention discloses a sapphire tube black body cavity optical fiber temperature measurement device, wherein an optical system comprises a sapphire tube black body cavity, a lens assembly shot anda Y-shaped energy transfer optical fiber; a circuit system comprises a photoelectric detector, a signal processing module and a display module; the sapphire tube black body cavity is formed by coatinga film inside the sealed end of a sapphire tube; the sapphire tube black body cavity, as a sensing part, is in contact with a to-be-measured environment, and converges thermal radiation energy at anenvironment temperature to the Y-shaped energy transfer optical fiber through the lens assembly shot; the Y-shaped energy transfer optical fiber divides thermal radiation energy into two paths of energy beams; the photoelectric detector converts two paths of energy beams into electric signals and transmits the electric signals to the signal processing module to carry out signal processing so as toobtain a digital signal; and the display module obtains a to-be-measured temperature value according to the digital signal and carries out display. According to the invention, the black body cavity and the lens assembly shot are combined so as to avoid continuous exposure of the optical system in a severe environment; and the sapphire tube black body cavity optical fiber temperature measurement device is applicable to the field of high-temperature industries with the long-time temperature measurement requirement.

Description

technical field [0001] The invention belongs to the field of industrial high temperature measurement, and in particular relates to a sapphire tube black body cavity temperature measuring device. Background technique [0002] In the field of industrial high-temperature measurement, traditional thermocouples are widely used for temperature measurement, but they have disadvantages such as poor corrosion resistance, short life, large consumption, and high price. Radiation temperature measurement technology has attracted the attention of researchers since it came out because of its strong anti-interference ability, no environmental influence, and fast response speed. The traditional non-contact high-temperature radiation temperature measurement method usually has its optical collection system exposed to high-temperature environments. Long-term exposure to high-temperature environments can easily lead to lens corrosion or vapor deposition, resulting in deterioration of the optical...

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Problems solved by technology

However, these instruments require sophisticated optical lenses and complex optical signal

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