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A measuring device suitable for two-dimensional reconstruction of gas in combustion flow field

A measuring device and two-dimensional reconstruction technology, applied in measuring devices, using electrical devices, sensing radiation from gas/flame, etc., can solve problems such as large errors in reconstruction results, achieve high precision, avoid reconstruction errors, and save measurements effect of space

Active Publication Date: 2019-07-09
PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the limitation of hardware conditions in the experiment, the rotation angle is 90 degrees, which makes the error of the reconstruction result larger

Method used

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  • A measuring device suitable for two-dimensional reconstruction of gas in combustion flow field
  • A measuring device suitable for two-dimensional reconstruction of gas in combustion flow field
  • A measuring device suitable for two-dimensional reconstruction of gas in combustion flow field

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Experimental program
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Effect test

Embodiment Construction

[0026] The following is a further detailed description of the combustion flow field gas two-dimensional reconstruction measurement device in conjunction with the accompanying drawings.

[0027] figure 1 A schematic diagram of the two-dimensional reconstruction measurement device is given. The measurement device includes an electronically controlled rotary table (1), an electronically controlled translational table combination (2), a laser emitting and receiving end surface (3), a measured area (4), and a laser coupler combination ( 5), laser transmitter (6), etalon (7), detector array (8), laser (9), multi-channel data acquisition card (10), translation stage controller (11), laser controller (12 ), computer (13).

[0028] figure 2 A schematic diagram of the rotary translation stage is given, which includes an electric control rotary stage (1), an electric control translation stage (201, 202), two fixed plates (203, 204), a fixed frame (301), a transmitting probe (302) and ...

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Abstract

The invention discloses a multi-optical path and multi-angle measuring device suitable for two-dimensional reconstruction of gas in a combustion flow field. Including electric control rotation stage, electric control translation stage, laser transmitting and receiving end surface, laser coupler, multi-channel data acquisition card, laser controller, translation stage controller, etalon, laser, detector, computer. The measurement device adopts all-fiber transmitting and receiving, and the two ends of the laser transmitting and receiving end face are respectively fixed on two electronically controlled translation platforms, so that the maximum measurement area of ​​the device is 350mm×350mm, and the minimum adjustable translation distance is 1mm. The bottom end of the translation platform is fixed on the electric control rotation platform, so that the entire measuring device can perform 360° rotation measurement, and the minimum adjustable rotation angle is 1°. The laser controller is used to control the output wavelength of the laser, the etalon is used to calibrate the laser frequency, the detector converts the collected optical signal into an electrical signal, and transmits it to the data acquisition card for processing. The entire device has a wide measurement range and high measurement accuracy, and can realize two-dimensional measurement of high-temperature combustion flow fields.

Description

technical field [0001] The invention belongs to the technical field of flow field optical measurement, relates to tunable semiconductor laser absorption spectrum technology, and is a universal and reliable measurement device developed for two-dimensional reconstruction of combustion flow field gas. Background technique [0002] With the continuous development of aerospace technology and the increasing demand for national defense construction, engine combustion flow field diagnosis and performance evaluation have received more and more attention. The efficient combustion flow field measurement method can provide an important reference for improving the combustion efficiency of the engine. Traditional flow field measurement mainly uses contact measurement methods, such as pneumatic velocity probes, gas sampling probes, thermocouple temperature probes, etc. Contact measurement has disadvantages such as high maintenance cost, high failure rate, slow response speed, inconvenient...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K11/32G01N21/85
CPCG01K11/32G01N21/85G01N2021/8578G01N2201/066G01N21/39G01N2021/399G01J3/0202G01J3/42G01J3/0218G01J3/108G01J5/0014G01J2005/0077G01J5/485G01J5/48G01K7/12G01K11/003G01N21/4795
Inventor 宋俊玲洪延姬王广宇饶伟
Owner PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV
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