CN109163905B - Flame hot wire speed measuring system - Google Patents
Flame hot wire speed measuring system Download PDFInfo
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- CN109163905B CN109163905B CN201810928417.2A CN201810928417A CN109163905B CN 109163905 B CN109163905 B CN 109163905B CN 201810928417 A CN201810928417 A CN 201810928417A CN 109163905 B CN109163905 B CN 109163905B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
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Abstract
The embodiment of the invention relates to a flame hot wire speed measurement system, which comprises: the device comprises an optical signal acquisition module, a photomultiplier and mode electricity conversion module and a combustion processing module; the optical signal acquisition module is used for receiving optical signals spontaneously radiated in the combustion chamber; the photomultiplier and mode-to-electricity conversion module is used for carrying out wavelength selective amplification processing on the optical signal and converting the optical signal into a corresponding voltage signal; and the combustion processing module is used for carrying out operation processing on the voltage signal to determine the flame propagation speed. The real-time on-line measurement of the flame propagation speed in the combustion chamber can be realized.
Description
Technical Field
The embodiment of the invention relates to the technical field of measurement of combustion chambers of aero-engines, in particular to a flame hot wire speed measurement system.
Background
Flame propagation speed in an aircraft engine is directly related to the engine combustion process and thrust characteristics. In the process of model engine development, the problems of limited space for setting an optical window, severe aerodynamic thermal load environment, high-temperature thermal sealing and the like exist, and the precise optical experiment is difficult to be carried out on the performance test field of the model engine, so that the complexity of the optical visualization experiment of the engine and the development and matching of the model engine is increased.
Therefore, a flame speed measuring system with high integration level and applied to the environment of the model engine needs to be developed.
Disclosure of Invention
The embodiment of the invention provides a flame hot wire speed measurement system which can realize real-time online measurement of flame propagation speed in a combustion chamber.
In a first aspect, an embodiment of the present invention provides a flame hot wire velocity measurement system, including:
the device comprises an optical signal acquisition module, a photomultiplier and mode electricity conversion module and a combustion processing module;
the optical signal acquisition module is used for receiving optical signals spontaneously radiated in the combustion chamber;
the photomultiplier and mode-to-electricity conversion module is used for carrying out wavelength selective amplification processing on the optical signal and converting the optical signal into a corresponding voltage signal;
and the combustion processing module is used for carrying out operation processing on the voltage signal to determine the flame propagation speed.
In one possible embodiment, the optical signal acquisition module receives optical signals spontaneously radiated in the combustion chamber by integrating an optical element running through in the axial direction.
In one possible embodiment, the optical element has functions related to guiding, high temperature and pressure sealing and optical fiber protection.
In one possible embodiment, the optical signal collection module receives the optical signal spontaneously radiated in the combustion chamber by arranging an optical fiber.
In one possible embodiment, the photomultiplier and mode-to-electricity conversion module includes:
a photomultiplier sub-module and an A/D conversion sub-module.
In a possible embodiment, the photomultiplier sub-module is configured to amplify the optical signal; and the A/D conversion submodule is used for converting the amplified optical signal into a corresponding voltage signal.
In a possible embodiment, the combustion processing module is specifically configured to perform operation processing on the voltage signal to obtain a one-dimensional or two-dimensional flame propagation speed.
In one possible embodiment, the system further includes:
and the measurement matrix module is used for determining the spatial distribution information of the flame propagation speed according to the acquired optical signals.
According to the flame hot-wire velocity measurement system provided by the embodiment of the invention, the optical signal acquisition module is used for receiving the optical signal of spontaneous radiation in the combustion chamber, the photomultiplier and the module-to-electricity conversion module are used for carrying out wavelength selective amplification processing on the optical signal and converting the optical signal into the corresponding voltage signal, and the combustion processing module is used for carrying out operation processing on the voltage signal to determine the flame propagation velocity, so that the real-time online measurement of the flame propagation velocity in the combustion chamber can be realized.
Drawings
Fig. 1 is a schematic structural diagram of a flame hot-wire velocity measurement system according to an embodiment of the present invention;
FIG. 2 is a one-dimensional flame hot wire according to an embodiment of the present invention;
fig. 3 is a two-dimensional flame hot wire according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
For the convenience of understanding of the embodiments of the present invention, the following description will be further explained with reference to specific embodiments, which are not to be construed as limiting the embodiments of the present invention.
Fig. 1 is a schematic structural diagram of a flame hot-wire velocity measurement system according to an embodiment of the present invention, as shown in fig. 1, the system includes:
the device comprises an optical signal acquisition module 101, a photomultiplier and mode-electricity conversion module 102 and a combustion processing module 103;
the optical signal acquisition module 101 is configured to receive an optical signal that is spontaneously radiated in the combustion chamber;
the photomultiplier and mode-to-electricity conversion module 102 is configured to perform wavelength selective amplification on the optical signal and convert the optical signal into a corresponding voltage signal;
the combustion processing module 103 is configured to perform operation processing on the voltage signal to determine a flame propagation speed.
Optionally, the optical signal collection module 101 receives the optical signal spontaneously radiated in the combustion chamber through an integrated optical element penetrating along the axial direction.
Optionally, the optical element has functions related to guiding, high temperature and pressure sealing and optical fiber protection.
Optionally, the optical signal collection module receives the optical signal spontaneously radiated in the combustion chamber by arranging an optical fiber.
Optionally, the photomultiplier and mode-to-electricity conversion module 102 includes:
a photomultiplier sub-module 1021, and an a/D conversion sub-module 1022.
Optionally, the photomultiplier sub-module is configured to amplify the optical signal; and the A/D conversion submodule is used for converting the amplified optical signal into a corresponding voltage signal.
Optionally, the combustion processing module is specifically configured to perform operation processing on the voltage signal to obtain a one-dimensional or two-dimensional flame propagation speed.
Optionally, the system further comprises: and a measurement matrix module (not shown in fig. 1) for determining the spatial distribution information of the flame propagation speed from the acquired light signal.
In this embodiment, the flame hot-wire velocity measurement system can be divided into two one-dimensional or two-dimensional velocity measurement systems according to the arrangement mode of the optical element, wherein the one-dimensional measurement system weights the flame combustion chemiluminescence intensity with the arrangement position of the optical element to define the flame center position and obtain the flame propagation velocity quantitative information; the two-dimensional measurement system consists of two orthogonal one-dimensional systems. The integrated module is arranged on the end face of the combustion chamber. Three-dimensional flame speed measurement can be performed by a one-dimensional and two-dimensional flame hot wire travel measurement matrix. Meanwhile, flame speed measurement with different spatial resolutions can be realized by adjusting the layout distance.
The flame propagation speed signal that this application acquireed can be used to the interior dynamic flame route of ration analytic engine combustion chamber and vibrate the characteristic.
According to the flame hot-wire velocity measurement system provided by the embodiment of the invention, the optical signal acquisition module is used for receiving the optical signal of spontaneous radiation in the combustion chamber, the photomultiplier and the module-to-electricity conversion module are used for carrying out wavelength selective amplification processing on the optical signal and converting the optical signal into the corresponding voltage signal, and the combustion processing module is used for carrying out operation processing on the voltage signal to determine the flame propagation velocity, so that the real-time online measurement of the flame propagation velocity in the combustion chamber can be realized.
Those of skill would further appreciate that the various illustrative components and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. A flame hot wire velocimetry system, comprising:
the device comprises an optical signal acquisition module, a photomultiplier and mode electricity conversion module and a combustion processing module;
the optical signal acquisition module is used for receiving optical signals of spontaneous radiation in the combustion chamber, and the optical signal acquisition module receives the optical signals of spontaneous radiation in the combustion chamber through the arrangement of optical fibers;
the photomultiplier and mode-to-electricity conversion module is used for carrying out wavelength selective amplification processing on the optical signal and converting the optical signal into a corresponding voltage signal;
the combustion processing module is used for carrying out operation processing on the voltage signal to determine the flame propagation speed;
the measurement matrix module is used for determining the spatial distribution information of the flame propagation speed according to the acquired optical signals;
the flame propagation speed measuring system is divided into one dimension or two dimensions according to the arrangement mode of the optical signal acquisition modules, and the one-dimension measuring system weights the flame combustion chemiluminescence intensity with the arrangement position of the optical signal acquisition modules, defines the central position of flame and obtains the quantitative information of the flame propagation speed; the two-dimensional measurement system consists of two groups of orthogonal one-dimensional systems, three-dimensional flame speed measurement is carried out through one-dimensional and two-dimensional flame hot wire travel measurement matrixes, and flame speeds with different spatial resolutions are measured through adjusting the distribution spacing;
the obtained flame propagation speed signal can be used for quantitatively analyzing dynamic flame paths and oscillation characteristics in the combustion chamber of the aircraft engine.
2. The system of claim 1, wherein the optical signal collection module receives optical signals spontaneously radiating within the combustion chamber through an integrated axially penetrating optical element.
3. The system of claim 2, wherein the optical element has guiding, high temperature and high pressure sealing, and optical fiber protection functions.
4. The system of claim 1, wherein the photomultiplier and mode-to-electricity conversion module comprises:
a photomultiplier sub-module and an A/D conversion sub-module.
5. The system of claim 4, wherein the photomultiplier sub-module is configured to amplify the optical signal; and the A/D conversion submodule is used for converting the amplified optical signal into a corresponding voltage signal.
6. The system according to claim 4 or 5, wherein the combustion processing module is specifically configured to perform arithmetic processing on the voltage signal to obtain a one-dimensional or two-dimensional flame propagation velocity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810928417.2A CN109163905B (en) | 2018-08-15 | 2018-08-15 | Flame hot wire speed measuring system |
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| CN201810928417.2A CN109163905B (en) | 2018-08-15 | 2018-08-15 | Flame hot wire speed measuring system |
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| CN109163905A CN109163905A (en) | 2019-01-08 |
| CN109163905B true CN109163905B (en) | 2020-04-21 |
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| CN113339839A (en) * | 2021-06-09 | 2021-09-03 | 南京法尔银科技有限公司 | Fire detection data processing system and method |
| CN113532870B (en) * | 2021-08-11 | 2022-11-08 | 中国科学院力学研究所 | Online identification system for working mode of engine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH063272A (en) * | 1992-04-23 | 1994-01-11 | Hitachi Ltd | Method and device for measuring metal component in combustion gas |
| CN102288560A (en) * | 2011-07-01 | 2011-12-21 | 刘星 | Fiber-Bragg-grating-based combustion speed rate detector for combustible solid |
| EP2642205A2 (en) * | 2012-03-23 | 2013-09-25 | Rosemount Aerospace Inc. | Apparatus, system and method for observing combustor flames in a gas turbine engine |
| CN105606839A (en) * | 2015-12-16 | 2016-05-25 | 上海理工大学 | Flame radiation-based combustion particle movement speed measurement device and method |
| CN106338616A (en) * | 2016-08-02 | 2017-01-18 | 南京理工大学 | Optical fiber array spatial filtering velocity measurement system |
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2018
- 2018-08-15 CN CN201810928417.2A patent/CN109163905B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH063272A (en) * | 1992-04-23 | 1994-01-11 | Hitachi Ltd | Method and device for measuring metal component in combustion gas |
| CN102288560A (en) * | 2011-07-01 | 2011-12-21 | 刘星 | Fiber-Bragg-grating-based combustion speed rate detector for combustible solid |
| EP2642205A2 (en) * | 2012-03-23 | 2013-09-25 | Rosemount Aerospace Inc. | Apparatus, system and method for observing combustor flames in a gas turbine engine |
| CN105606839A (en) * | 2015-12-16 | 2016-05-25 | 上海理工大学 | Flame radiation-based combustion particle movement speed measurement device and method |
| CN106338616A (en) * | 2016-08-02 | 2017-01-18 | 南京理工大学 | Optical fiber array spatial filtering velocity measurement system |
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