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Calibration device and method of online laser gas analysis system

An analysis system and laser gas technology, applied in the direction of material analysis, measurement device, and material analysis by optical means, can solve the problems of inability to apply at any time, time-consuming, etc., and achieve the effect of short calibration time and simple calibration structure.

Active Publication Date: 2010-01-20
中钢安环院武汉检测检验有限公司
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AI Technical Summary

Problems solved by technology

However, the disadvantage of this technology is that it cannot be applied at any time, because the calibration process is time-consuming and needs to be carried out on the pipeline site

Method used

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  • Calibration device and method of online laser gas analysis system
  • Calibration device and method of online laser gas analysis system
  • Calibration device and method of online laser gas analysis system

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Embodiment Construction

[0027] Below in conjunction with accompanying drawing, the present invention will be further described:

[0028] figure 1 It is a structural block diagram of an existing typical online laser gas analysis system, which is composed of a host unit 1, a transmitting unit 2, a receiving unit 5, a mechanical fixing device 3, and a purging device 6. The mechanical fixing device 3 fixes the gas pipeline 4, and the gas pipeline 4 is the measured gas 7.

[0029] The calibration device of the present invention integrates the calibration structure into the host unit, and is composed of a laser 8, an optical switch 9, a standard gas chamber 10 and a launch interface 11. The optical switch 9 is arranged in the host unit 1 of the online laser gas analysis system, and is connected with the host unit 1 of the online laser gas analysis system. The laser 8 in the host unit 1 is connected, and the optical switch 9 is also connected to the standard gas chamber 10 and the emission interface 11 . ...

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Abstract

The invention relates to a calibration device and a calibration method of a laser gas analysis system and the laser gas is obtained by coupling the light which is emitted by a laser by an optical fibre, wherein, the calibration device is composed of a laser (8), an optical switch (9), a standard air chamber (10) and a launch interface (11); the optical switch (9) is arranged in a main engine unit (1) of the online laser gas analysis system and is connected with the laser (8) in the main engine unit (1); the optical switch (9) is further connected with the standard air chamber (10) and the launch interface (11); standard to-be-detected gas is sealed in the standard air chamber (10); the launch interface (11) is connected with a launch unit (2) of the online laser gas analysis system. The calibration time is short by adopting the calibration method of the device, and multiple repeated calibrations can be accomplished in a minute; the calibration is programmed with no need of human intervention, and the system state can be monitored at any time; the calibration device has simple structure, and only the light path is improved without changing the structure of field installation, therefore, the current system is easy to be upgraded.

Description

technical field [0001] The invention relates to a calibration device and method for an online laser gas analysis system, in particular to a calibration device and a calibration method for a laser gas analysis system in which the light emitted by a laser is coupled through an optical fiber. Background technique [0002] The advantage of the online gas analysis system compared with the traditional sampling method gas analysis system is that it does not require sampling and pretreatment process, overcomes many defects of the traditional sampling method gas analysis system, has high reliability, fast measurement response speed, and analysis accuracy High, in the field of industrial process control, security and other fields have been more and more widely used. [0003] General online optical gas analysis system includes several basic parts: light emitting device, light receiving device, signal analysis device, drive control device. Generally, two holes are opened on the gas pip...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/01G01N21/39
Inventor 原辉张哲民刘晓波汪冰冰
Owner 中钢安环院武汉检测检验有限公司
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