Ultraviolet flame sensor and manufacturing method thereof

Abstract

An ultraviolet flame sensor and a manufacturing method thereof relate to a solar blind type ultraviolet flame sensor. The invention provides the ultraviolet flame sensor with simple structure, small size, high stability, high strength and high linearity and sensitivity, and the sensor manufacturing method with good versatility, simple technique and low cost. The invention is characterized in that: the ultraviolet flame sensor comprises a uviol piece, a meshed anode which is arranged on the uviol piece, a cathode substrate glass piece, a photocathode which is arranged on the cathode substrate glass piece, a glass ring which is arranged between the cathode and the anode, a vacuum orifice which is arranged on the glass ring, a plastic packaged base which is arranged under the cathode substrate glass piece, a cathode and an anode lead which are adhered to the plastic packaged base and are respectively connected with the cathode and the anode, and a plastic casing which is arranged around the plastic packaged base, the glass ring and the glass piece.

Description

technical field [0001] The invention belongs to the field of flame detectors, in particular to an ultraviolet flame sensor and a preparation method thereof. Background technique [0002] Ultraviolet detection technology is another important photoelectric detection technology developed after infrared and laser technology. It has broad application prospects in medicine, biology, military and other fields, and is of great significance to a country's national defense and national economic construction. , can be widely used in the exhaust flame detection of aircraft and rockets, missile detection and guidance, ultraviolet security communication technology, fire alarm and so on. [0003] The traditional ultraviolet flame sensor uses an ultraviolet photocell as a detection device, which can detect the 1800-2600 in the flame spectrum before the flame has formed an obvious flame. A device that emits an alarm signal through ultraviolet rays. Due to the limitation of the technical l...

AI Technical Summary

Problems solved by technology

It adopts a glass structure, which is mainly composed of transparent purple glass balls, linear or sheet-shaped photocathode and anode. performance needs to be improved

The existing ultraviolet photosensitive tubes are all made of glass spherical shells in a high-temperature environment by vacuuming, which is complicated in process and high in cost.

Moreover, the glass shell is in a molten state in a high-temperature environment, and it is difficult to ensure the distance and parallelism between the cathode and the anode during the production process, and at the same time, the performance requirements for the glass material are relatively high.

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