A through-beam type high temperature resistant smoke sensor and real-time detection method

A high temperature, sensor technology, applied in the direction of color/spectral characteristic measurement, etc., can solve the problem of smoke sensor not working normally, unable to work, smoke detection sensitivity is reduced, etc., to achieve strong real-time, strong anti-interference, low cost. Effect

Inactive Publication Date: 2011-12-21
SHANXI WEILI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under such high temperature conditions, many smoke sensors currently on the market will not work properly
Moreover, in an environment with high smoke concentration, many smoke sensors will attach a large amount of smoke powder to themselves with the increase of use time, which will reduce their own smoke detection sensitivity until they cannot work.

Method used

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  • A through-beam type high temperature resistant smoke sensor and real-time detection method
  • A through-beam type high temperature resistant smoke sensor and real-time detection method
  • A through-beam type high temperature resistant smoke sensor and real-time detection method

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Experimental program
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Effect test

Embodiment 1

[0028] A method for real-time detection of through-beam high-temperature-resistant smoke and dust, comprising the following steps:

[0029] The light emitted by the laser light source passes through an optical narrow-band filter to output light of a specific wavelength, and the receiving end is equipped with the same optical narrow-band filter as the transmitting end, which can effectively eliminate the interference caused by the ambient light to the detection system;

[0030] At the transmitting end, the laser first passes through an optical narrow-band filter and then an optical isolator, and then passes through a pure silica fiber with a core diameter of 800 μm and stainless steel armor to connect to the laser probe.

[0031] The input end of the optical isolator is connected to the output end of the optical narrowband filter, so that the laser light source is not affected by the back reflection and scattered light of the optical path in the system, and can work stably when ...

Embodiment 2

[0044] A through-beam type high temperature resistant smoke sensor provided by the present invention, such as figure 1 , figure 2 shown. Including: a laser light source 101, a first optical narrowband filter 1021, a second optical narrowband filter 1022, an optical isolator 103, a first laser probe 1041, a second laser probe 1042, a photodetector 105, and a first core diameter of 800 μm Armored pure silica fiber 1061, armored pure silica fiber 1062 with a second core diameter of 800 μm, gas supply pipe 107, dust medium 100, laser beam expanding collimating lens 201, laser beam expanding collimating lens group 202, 5-dimensional adjustment Frame 203, flange 204, pure silica optical fiber 205 with a core diameter of 800 μm, pure quartz lens 206, gas nozzle 207, spiral thread port 208, gas input port 209, and pure copper aqueduct 2010.

[0045] The first laser probe 1041 and the second laser probe 1042 consist of a laser beam expansion collimator lens 201, a 5-dimensional adju...

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Abstract

A through-beam high temperature resistant smoke sensor and a real-time detection method. The light radiated by the laser light source is in the visible light band. The core diameter of the pure silica fiber is 800 μm and has stainless steel armor. Each laser probe consists of a set of laser beam expander collimating mirror, a 5-dimensional adjustment frame, and a piece of pure quartz lens. , a pure silica fiber with a core diameter of 800μm, a gas input port, and three gas nozzles. The through-beam high temperature resistant smoke sensor of the present invention adopts the method of separating the laser probe from the laser light source and the photodetector. The method that the adopted devices such as lasers and photodetectors, which are easily affected by environmental conditions, are kept away from high temperature and high smoke concentration environments, and the self-cooling and self-cleaning capabilities of the laser probes enable the smoke sensor of the present invention to be used in various harsh smoke environments. It has the advantages of high temperature resistance, no cleaning, strong anti-interference, strong real-time performance, high precision, high sensitivity and low cost.

Description

technical field [0001] The invention relates to a through-beam type high temperature resistant smoke sensor and a real-time detection method. Specifically, it has the ability to monitor the smoke concentration in real time in a high-temperature and high-density smoke environment. Background technique [0002] The generation of smoke and dust is unavoidable in many factories, so dust removal facilities have become a must-have facility for modern factories. The production site environment of different factories and mines will be very different. For example, the site of a steel factory is accompanied by high-temperature radiation of several hundred degrees when a large amount of smoke is generated. Under such high temperature conditions, many smoke sensors currently on the market will not work properly. Moreover, in an environment with high smoke concentration, many smoke sensors will attach a large amount of smoke powder to themselves as the use time increases, thereby reduc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/27
Inventor 延凤平李琦冯亭樊勇
Owner SHANXI WEILI TECH
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