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A device for installing an optical probe under high temperature and vibration conditions

An optical probe and conditional technology, which is applied in the direction of measuring devices, material analysis through optical means, scientific instruments, etc., can solve problems such as the difficulty of installing optical probes, improve measurement accuracy and accuracy, ensure accuracy and precision, and reduce offset effect

Active Publication Date: 2022-01-18
AVIC BEIJING CHANGCHENG AVIATION MEASUREMENT & CONTROL TECH INST +2
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  • Abstract
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  • Application Information

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Problems solved by technology

However, the complex environment of high temperature and high vibration in the engine combustion chamber brings great difficulties to the installation of optical probes. Among them, how to realize the protection of optical components and the collimation of optical signals is of great importance to improve the signal-to-noise ratio and stability of the system. important role

Method used

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  • A device for installing an optical probe under high temperature and vibration conditions
  • A device for installing an optical probe under high temperature and vibration conditions
  • A device for installing an optical probe under high temperature and vibration conditions

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Embodiment

[0037] figure 1 It is a specific implementation of the high-precision optical probe installation device under high temperature and vibration conditions, including a laser emitting device a on the left and a laser receiving device b on the right, wherein the devices at both ends include a vacuum flange 1 and a vacuum cavity 2 , wedge-shaped window vacuum flange 3, corrugated chamber 4, and vacuum flange 1, vacuum chamber 2, wedge-shaped window vacuum flange 3, and corrugated chamber 4 are provided with 8 evenly distributed through holes at both ends. Among them, one end of the vacuum flange 1 is connected to one end of the vacuum chamber 2, and the other end of the vacuum chamber 2 is connected to one end of the wedge-shaped window vacuum flange 3, and a sapphire window 22 is opened on it to ensure that the light beam can effectively enter the interior of the combustion chamber; the wedge-shaped window The other end of the vacuum flange 3 and the corrugated cavity. At the same...

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Abstract

The invention relates to a device for installing an optical probe under high temperature and vibration conditions, which is used to improve the accuracy and stability of an aero-engine gas online detection technology, and belongs to the field of probe installation under high temperature and high vibration complex environments. The device of the invention includes two parts: a laser emitting device and a laser receiving device. The device of the invention has a precise platform, high precision, high temperature resistance and high-vibration complex environment, can improve measurement accuracy and accuracy, and can provide technical means for the application of spectral absorption technology in engine complex environments. Most of the devices of the present invention are installed in a vacuum and equipped with cooling and vibration damping devices, which can greatly reduce the influence of the external environment on the measurement results, reduce the diffusion of the engine combustion chamber temperature, avoid damage to the optical probe, and The offset of the optical system can be reduced, and the spectral absorption technology can be used to monitor the gas characteristics of the engine combustion chamber with high precision.

Description

technical field [0001] The invention relates to a device for installing an optical probe under high temperature and vibration conditions, which is used to improve the accuracy and stability of an aero-engine gas online detection technology, and belongs to the field of probe installation under high temperature and high vibration complex environments. Background technique [0002] In aerospace engines, the measurement of gas composition, concentration and other state quantities in high-temperature environments is very important for understanding the combustion conditions inside the engine, and is also an important basis for the optimization of combustion organization and structure. At present, the gas measurement is mostly performed by drawing out the gas in the combustion chamber of the engine and then detecting it. This method cannot realize in-situ real-time detection, and requires the cooperation of multiple devices, and the system structure is complex. However, the in-sit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/31G01N21/01
CPCG01N21/01G01N21/31
Inventor 董祥明刘德峰黄漫国刘伟李欣
Owner AVIC BEIJING CHANGCHENG AVIATION MEASUREMENT & CONTROL TECH INST
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