Non-dispersive infrared optical sulfur hexafluoride gas concentration sensor

A sulfur hexafluoride gas, concentration sensor technology, applied in scientific instruments, material analysis by optical means, instruments, etc., can solve problems such as adsorption of dust, and achieve the effect of ensuring detection accuracy

Active Publication Date: 2017-11-21
常州合众电气有限公司
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in order to solve the problem that the diffused sulfur hexafluoride gas infrared sensor detects in an environment with relatively large dust, the mirror surface will absorb dust, and a non-dispersive infrared optical sensor is now provided. Sulfur hexafluoride gas concentration sensor

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  • Non-dispersive infrared optical sulfur hexafluoride gas concentration sensor

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Embodiment

[0016] Such as figure 1 As shown, a non-dispersive infrared optical sulfur hexafluoride gas concentration sensor includes a housing 1, a first motor 2, a second motor 3, a slider 4, a guide shaft 5, a screw 6, a rotating shaft 7, a mirror 8, Cleaning assembly 9, infrared ray emitting end 10, infrared ray receiving end 11 and detection circuit 12, the housing 1 has a cavity body 102, and the outer peripheral surface of the housing 1 is provided with a ventilation channel communicating with the cavity body 102 port 101, one end of the infrared emitting end 10 and one end of the infrared receiving end 11 are arranged side by side in the cavity body 102, and the infrared emitting end 10 and the infrared receiving end 11 are located at one end of the housing 1 , the infrared emitting end 10 and the infrared receiving end 11 are respectively electrically connected to the detection circuit 12, the rotating shaft 7 is rotatably arranged on the housing 1, and the rotating shaft 7 is pr...

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Abstract

The invention relates to the technical field of sensor devices, and especially relates to a non-dispersive infrared optical sulfur hexafluoride gas concentration sensor. The sensor comprises a shell, a first motor, a second motor, a sliding block, a guiding shaft, a screw rod, a rotating shaft, a mirror surface, a cleaning assembly, an infrared ray emitting end, an infrared ray receiving end and a detection circuit, a cavity body is arranged in the shell, the peripheral surface of the shell is provided with gas vents communicating with the cavity body, and one end of the infrared ray transmitting end and one end of the infrared receiving end are arranged in the cavity body in parallel. When the non-dispersive infrared optical sulfur hexafluoride gas concentration sensor is used, the second motor is started order to make the sliding block shift on the screw rod in order to remove dusts on the mirror surface, and the first motor is started to drive the rotating shaft to rotate in order to make the cleaned mirror surface arranged opposite to the infrared ray receiving end, so the sensor works stably, and the detection accuracy of the sensor is guaranteed.

Description

technical field [0001] The invention relates to the technical field of sensor equipment, in particular to a non-dispersive infrared optical sulfur hexafluoride gas concentration sensor. Background technique [0002] At present, infrared absorption spectroscopy is a commonly used gas detection method. It has the advantages of high measurement accuracy, good repeatability and stability, long service life, and quantitative analysis. Its measurement accuracy can reach one millionth. The resolution reaches the negative 6th power of 10. However, it is difficult to detect trace amounts of SF6 gas in the air. We choose a diffused sulfur hexafluoride gas sensor using infrared absorption spectroscopy to detect the content of sulfur hexafluoride gas in the air. Due to the limitation of use requirements, in order to reduce the volume, the existing diffused sulfur hexafluoride gas sensors are equipped with a mirror for increasing the optical path, and the infrared light emitted by the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3504G01N21/15
CPCG01N21/15G01N21/3504
Inventor 陈启飞韩友峰叶建杨小明
Owner 常州合众电气有限公司
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