Five-hole multifunctional complex environment combustion simulation device

Abstract

The present invention discloses a five-hole multifunctional complex environment combustion simulation device, which relates to the field of complex environment simulation and electrical control. The device includes a main control console and a high temperature resistant tube, slots on the end surfaces at both ends of the main control console, the high temperature resistant tube passes through the end surfaces at both ends of the main control console, and the high temperature resistant tube is supported by a base, and the base is arranged on the inner bottom surface of the main control console; the two ends of the high temperature resistant tube are sealed by flanges respectively, and a pressure gas flow rate control input port, a lens and an observation window I are arranged on flange I, and the incident light of the lens comes from the corresponding tunable semiconductor laser control terminal; a pressure gas flow rate control output port and an observation window II are arranged on flange II, and a planar array photoelectric detector is located on the surface of flange II; three combustion module insertion holes are opened on the top surface of the main control console, and a combustion module is embedded in each combustion module insertion hole. The present invention has a reasonable design, a simple structure and is easy to operate, and can be constructed in a laboratory scenario to meet the needs of a variety of actual complex environments.

Description

Technical Field

[0001] The present invention relates to the field of complex environment simulation and electrical control, in particular to the field of multi-physical field environment simulation technology, and specifically to a five-hole multifunctional complex environment combustion simulation device. Background Art

[0002] The multi-physical field at the outlet of the combustion chamber of an aero-engine can effectively reflect the combustion state of the engine and is the key basis for the performance evaluation, inspection and maintenance of the aero-engine. Taking the temperature distribution as an example, the uneven and unstable distribution of the combustion flow field will seriously affect the service life and reliability of the downstream hot end components, and affect the key performance indicators of the aero-engine such as the thrust-to-weight ratio. Long-term exposure to an unstable high-temperature environment will lead to a decrease in the strength of the hot end material, creep, and even fracture, resulting in serious consequences. Therefore, an efficient, highly reliable, fast and non-destructive multifunctional test method for the outlet temperature, pressure, gas flow rate and gas composition of the aero-engine combustion chamber will promote the development of my country's aero-engines and contribute to the development of my country's aviation industry. In the current test and measurement, thermocouples, acoustic fluorescence, FTIR passive detection technology and other methods are mostly used to measure multiple parameters such as temperature and gas concentration distribution in high-energy combustion environments such as the outlet of the aero-engine combustion chamber. There are problems such as low test accuracy, limited measurement range, insufficient anti-interference ability, and the inability to accurately restore the internal physical field. It is urgent to carry out research on measurement technology in this field. However, in real-world testing environments, there are a large number of environmental interference factors, which greatly affect the accuracy of the test results and will cost huge amounts of manpower and material resources, reducing research efficiency and limiting the detection of multi-parameter information in complex environments such as the outlet of an aircraft engine combustion chamber where multiple physical fields act together, thus restricting the development of my country's aircraft engine technology.

[0003] Based on the above background, there is an urgent need for a simulation device that can simulate and reconstruct complex multi-physical field environments such as those at the exit of an aircraft engine. Summary of the invention

[0004] In order to solve the problem that there are a large number of environmental interference factors in a real scene test environment, which greatly affect the accuracy of the test results, the present invention provides a five-hole multifunctional complex environment combustion simulation device.

[0005] The present invention is realized through the following technical scheme: a five-hole multifunctional complex environment combustion simulation device, including a main control console and a high-temperature resistant tube, the main control console is in the shape of a rectangular parallelepiped, and slots for the high-temperature resistant tube to pass through are opened on the end faces at both ends of the main control console, the high-temperature resistant tube passes through the end faces at both ends of the main control console, so that the middle section of the high-temperature resistant tube is located inside the main control console, the high-temperature resistant tube is supported by a base I and a base II, and the base I and the base II are arranged on the bottom surface of the main control console; the two ends of the high-temperature resistant tube are sealed by flanges I and II respectively, and the flange I is provided with a pressure gas flow rate control input port, a lens and an observation window I, and the incident light of the lens comes from the corresponding tunable semiconductor Laser control terminal; the flange II is provided with a pressure gas flow rate control output port and an observation window II, the output light of the lens is sent to the array photoelectric detector, and the array photoelectric detector is located on the surface of flange II; three combustion module insertion holes are opened on the top surface of the main control console, and a combustion module is embedded in each combustion module insertion hole, and the three combustion modules are combustion module I, combustion module II, and combustion module III respectively; a terminal controller is also arranged on the outer wall of the main control console; the array photoelectric detector outputs information to the terminal controller; the main control console is preset with a matching wire groove for fixing and arranging the connecting wires connecting the tunable semiconductor laser control terminal and the terminal controller.

[0006] The invention is a five-hole multifunctional complex environment combustion simulation device. The five holes refer to three combustion module insertion holes and two pressure gas flow rate control ports. The combustion module insertion hole is used to embed the combustion module, and the combustion module can change the temperature field distribution inside the combustion field simulation device; one of the two pressure gas flow rate control ports is used to pass different gas components and control the pressure and flow rate of the added gas at the same time, and the other pressure gas flow rate control port is used to discharge high-temperature gas and change the pressure, flow rate, and gas concentration. The combustion simulation device includes a main control console and a high-temperature resistant pipe. The main control console is a rectangular parallelepiped. The end faces at both ends of the main control console are provided with slots for the high-temperature resistant pipe to pass through. The high-temperature resistant pipe passes through the end faces at both ends of the length side direction of the main control console, so that the middle section of the high-temperature resistant pipe is located inside the main control console. The combustion module extends into the high-temperature resistant pipe through the insertion hole to perform combustion simulation; the high-temperature resistant pipe is supported by base I and base II, and base I and base II are arranged on the inner bottom surface of the main control console. The two ends of the high-temperature resistant pipe are sealed by flange I and flange II respectively. Flange I of the high temperature resistant tube is provided with a pressure gas flow rate control input port, a lens and an observation window I. The pressure gas flow rate control input port is used to introduce different gas components and control the pressure and flow rate of the added gas at the same time; the observation window I is used to embed the lens; the incident light of the lens comes from the corresponding tunable semiconductor laser control terminal, and the laser output light passes through the lens and then passes through the high temperature and complex environment in the high temperature resistant tube and is absorbed by the array photoelectric detector. Flange II of the high temperature resistant tube is provided with a pressure gas flow rate control output port and an observation window II. The pressure gas flow rate control output port is used to exhaust and discharge pressure, and change the environmental factors such as pressure, flow rate and gas components inside the simulation device; the function of observation window II is to embed the array photoelectric detector and is also used for observation. There are three combustion module insertion holes on the top surface of the main control console, and a combustion module is embedded in each combustion module insertion hole. The three combustion modules are combustion module I, combustion module II, and combustion module III. The three combustion modules can change the temperature of the high energy combustion field, and the temperature field distribution inside the simulation device can be adjusted through the combustion module. A terminal controller is also set on the side of the main control console to control the entire combustion simulation process. After the array photoelectric detector converts the photoelectric signal, it outputs the information to the terminal controller. The terminal controller is based on TDLAS technology and inverts important parameter information such as gas temperature, pressure, flow rate and composition by measuring the absorption spectrum of gas characteristics in simulated multifunctional complex environments.

[0007] The specific operation of the present invention is: the main control console adjusts the simulation environment, and the parameters in the complex environment, including temperature, pressure, flow rate and gas components, are adjusted through the main control console to realize the simulation of different complex environments. Specifically, in the test, the combustion module first extends into the high temperature resistant tube through the combustion module insertion hole to provide a high temperature environment (different combustion modules can be inserted for multiple tests to provide a complex high temperature environment); and different gas components are introduced through the pressure gas flow rate control input port at one end, and the pressure and flow rate are controlled at the same time, and the high temperature gas is discharged through the pressure gas flow rate control output port at the other end to change the pressure and flow rate; the combustion module is adjusted through the main control console to form different temperature environments. Finally, after the tunable semiconductor laser control terminal emits laser light, it passes through the high temperature complex environment through the lens and is absorbed by the array photoelectric detector, converted into an electrical signal and input into the terminal controller, and then the control module is used based on TDLAS technology to measure the gas characteristic absorption spectrum in the simulated multifunctional complex environment to invert the important parameter information such as gas temperature, pressure, flow rate and component; the detection and control module processes the data and uploads it to the host computer; in the whole process, the observation window is used to embed the lens and the array photoelectric detector. The present invention can adjust the temperature range, pressure and gas flow rate in the simulation environment according to actual demand scenarios, such as the outlet of the combustion chamber of an aerospace engine, a high-temperature boiler, etc., to form a three-dimensional multifunctional complex combustion environment area that meets the experimental requirements. It can also explore the stable control method of the five-hole multifunctional complex combustion environment, construct and optimize the simulation environment under the influence of multiple physical fields; according to the relevant model, a five-hole multifunctional complex environment combustion simulation device is built. The present invention mainly simulates static and quasi-static environments, and can perform inversion and reconstruction of multiple physical fields.

[0008] Preferably, the terminal controller is connected to a host computer.

[0009] Preferably, the terminal controller is provided with a multi-physical field control module and a detection and control module, the multi-physical field control module includes a temperature control module, a pressure control module, a gas flow rate control module, and a gas composition control module; the detection and control module includes a data processing module, a data storage module and a laser detector control module.

[0010] Compared with the prior art, the present invention has the following beneficial effects: The five-hole multifunctional complex environment combustion simulation device provided by the present invention: 1. It is capable of constructing a variety of multifunctional complex environments with a certain scale that meet the needs of actual complex environments in laboratory scenarios, and providing a tested experimental object with a certain degree of confidence for complex environment testing under the influence of multiple physical fields; 2. The adjustment method of the master control console can realize flexible and convenient simulation of a variety of different complex environments, and can also adjust the environmental parameter information in a targeted manner; 3. The present invention builds a quasi-static high-temperature environment under laboratory conditions, and considers a variety of factors affecting the complex environment, such as temperature, pressure, gas flow rate and gas composition, etc., to provide hardware conditions for realizing high-energy combustion field detection in laboratory scenarios, reduce test costs, and improve technical research and development. Research efficiency; Compared with the existing testing technology, the present invention is not limited to theoretical calculations and is closer to real scenes; ④ The present invention has a reasonable design, simple structure and easy operation, and can build a small complex environment that meets the needs of different scenes and has controllable multiple parameters in a limited environment such as a laboratory environment, providing a tested experimental object with a certain degree of confidence for the complex environment, and has good practical application value; ⑤ It has the characteristics of low coupling, high portability and high scalability, and can realize the simulation of complex environments under the influence of various parameters, providing a low-cost and high-efficiency environmental simulation method for the detection of complex environments such as aerospace engine combustion chambers and high-temperature boilers, and providing technical support and environmental basis for the detection of important parameters such as temperature, pressure, flow rate and gas composition in such complex environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the terminal controller structure in the five-hole multifunctional complex environment simulation device described in the present invention.

[0012] Figure 2 This is an overall schematic diagram of the five-hole multifunctional complex environment combustion simulation device described in the present invention.

[0013] Figure 3 This is a flow chart of the five-hole multifunctional complex environment simulation manual control method according to an embodiment of the present invention.

[0014] The markings in the figure are as follows: 1-tunable semiconductor laser control terminal, 2-lens, 3-observation window I, 4-pressure gas flow rate control input port, 5-flange I, 6-high temperature resistant tube, 7-combustion module I, 8-combustion module II, 9-combustion module III, 10-base I, 11-base II, 12-main control console, 13-terminal controller, 14-observation window II, 15-pressure gas flow rate control output port, 16-flange II, 17-array photoelectric detector. DETAILED DESCRIPTION

[0015] The present invention is further described below in conjunction with specific embodiments.

[0016] A five-hole multifunctional complex environment combustion simulation device, such as Figure 2 As shown: it includes a main control console 12 and a high temperature resistant tube 6, the main control console 12 is in the shape of a rectangular parallelepiped, and slots for the high temperature resistant tube 6 to penetrate are opened on the end faces at both ends of the main control console 12, the high temperature resistant tube 6 passes through the end faces at both ends of the main control console 12, so that the middle section of the high temperature resistant tube 6 is located inside the main control console 12, the high temperature resistant tube 6 is supported by a base Ⅰ10 and a base Ⅱ11, and the base Ⅰ10 and the base Ⅱ11 are arranged on the bottom surface of the main control console 12; the two ends of the high temperature resistant tube 6 are sealed by flange Ⅰ5 and flange Ⅱ16 respectively, and the flange Ⅰ5 is provided with a pressure gas flow rate control input port 4, a lens 2 and an observation window Ⅰ3, and the incident light of the lens 2 comes from the corresponding tunable semiconductor laser control terminal 1; the flange Ⅱ16 A pressure gas flow rate control output port 15 and an observation window II 14 are provided on it, and the output light of the lens 2 is sent to the array photoelectric detector 17, and the array photoelectric detector 17 is located on the surface of the flange II 16; three combustion module insertion holes are opened on the top surface of the main control console 12, and a combustion module is embedded in each combustion module insertion hole, and the three combustion modules are combustion module I7, combustion module II8, and combustion module III9 respectively; a terminal controller 13 is also arranged on the outer wall of the main control console 12; the array photoelectric detector 17 outputs information to the terminal controller 13; the main control console 12 is preset with a matching wire groove for fixing and arranging the connecting wires connecting the tunable semiconductor laser control terminal 1 and the terminal controller 13.

[0017] This embodiment adopts the following preferred solution: the terminal controller 13 is connected to the host computer; the terminal controller 13 is provided with a multi-physical field control module and a detection and control module, such as Figure 1 As shown, the multi-physical field control module includes a temperature control module, a pressure control module, a gas flow rate control module, and a gas composition control module; the detection and control module includes a data processing module, a data storage module, and a laser detector control module; and the lens 2 emits conical light.

[0018] The specific operations of this embodiment are as follows: first, the operator exchanges information with the terminal controller 13 carried by the device through the host computer, controls the multi-parameter control module of the device, adjusts the temperature, pressure, flow rate, and gas composition, and realizes the simulation of various complex environments; on the other hand, the terminal controller 13 interacts with the detection and control module to realize the caching and processing of data in complex environments, uses the laser detector control module to control the laser and detector, realizes the tuning of the wavelength optimization modulation, optimizes the detection of high-temperature fields, and establishes an optimization model that can be applied to the real scene environment-detection. The two bases in the main control console 12 support the high temperature resistant tube 6, and a matching wire groove is preset outside the high temperature resistant tube. The wire groove can fix and arrange multiple control connection lines, including the control connection lines between the combustion modules 7-9 and the terminal controller 13 and the connection lines between the tunable semiconductor laser control terminal 1 and the terminal controller 13, to reduce interference; the pressure gas flow rate control input port 4 on the flange Ⅰ5 cooperates with the terminal controller 13 to change the pressure, flow rate, gas composition and other environmental factors inside the simulation device. To achieve high temperature field detection, the combustion module Ⅰ7, the combustion module Ⅱ8, and the combustion module Ⅲ9 are embedded in the high temperature resistant tube through the combustion module insertion hole, and are used to change the temperature parameters inside the simulation device through the terminal controller 13. In this embodiment, the test method used is the tunable semiconductor laser molecular absorption spectroscopy (TDLAS) technology, and its basic theory is the Lambert-Beer Law. When the laser emitted by the tunable laser light source scans the specific absorption line of the gas, after the light beam is absorbed by the gas, the light intensity of the corresponding absorption line wavelength will be attenuated due to gas absorption. After corresponding calculations, important parameter information such as temperature, pressure, flow rate and component concentration is obtained. The specific calculation process is as follows:

[0019] If the incident laser intensity is I0, when passing through a uniform gas medium with an optical path length of L, the intensity of the transmitted light absorbed by a specific gas molecule is I t It can be expressed as formula (1).

[0020] I t =I0exp[-S(T)XPLφ(v)] (1)

[0021] In the formula, v[cm -1 ] is the wave number corresponding to the absorption line, C is the volume concentration fraction of the absorbing gas, L[cm] is the optical path length of light in a uniform gas medium, P[atm] is the total gas pressure, T[K] is the gas temperature during measurement, φ(v)[cm] represents the absorption line function normalized by the integral area, which satisfies the normalization condition: ∫φ(v)dv=1. S[T][cm -2 atm -1 ] is the line intensity corresponding to the absorption line when the gas temperature is T.

[0022] In the formula, S[T](cm -2 atm -1 ) is the absorption line intensity, which is a unique parameter of the absorption line and also a single-valued function of temperature. The absorption line intensity at any temperature can be expressed as:

[0023]

[0024] Where S(T0) is the intensity of the absorption line at the reference temperature T0, h is Planck's constant, c is the speed of light, k is the Boltzmann constant, and E″ is the low-level energy of the absorption line. Q(T) is the partition function of the gas molecule, which can be obtained from the corresponding spectral database.

[0025] In order to understand the TDLAS technology used in the device of the present invention, taking the dual-line temperature measurement method as an example, the complex environment multi-parameter acquisition method based on TDLAS is explained in detail.

[0026] In the embodiment of the present invention, the tunable semiconductor laser control terminal is adjusted to control the laser operating temperature, and the current is adjusted so that the two laser wavelengths reach the selected absorption spectrum. After the laser passes through the test environment formed by the high temperature resistant tube of the environmental simulation device, the detector receives the signal and obtains two absorption intensities through baseline fitting and absorption linear fitting. That is, the ratio of the integral absorption rates of the two absorption spectrum lines is a single-valued function of temperature. Therefore, the flow field temperature is calculated based on the measured integral absorption rates of the two spectrum lines:

[0027]

[0028] In the formula, A i is the integrated absorption rate of the absorption spectrum. When the field to be measured is a uniform flow field, it can be expressed as:

[0029] A i =P·X·S(T)·L (4)

[0030] After obtaining the temperature of the field to be measured, the temperature can be substituted into formula (4) to obtain the component partial pressure of the component to be measured:

[0031]

[0032] When the high temperature field pressure is known or measured by other methods, it is possible to obtain information on a variety of parameters in a complex environment.

[0033] Further, to facilitate understanding of the method provided in this embodiment, the present invention provides a control flow chart of a five-hole multifunctional complex environment simulation control method, see Figure 3 .

[0034] Among them, the process of a functional complex environment simulation control method includes: first, according to the five-hole multifunctional complex environment requirements, the environmental simulation factors such as temperature, pressure, flow rate and gas composition are initialized, and it is determined whether to adjust multiple parameters under the simulated environment scenario, and the simulation of multiple environments is achieved by controlling the key simulation factors of the environment; then, it is determined whether the environment meets the detection requirements. If so, data collection is performed; if not, return to the previous step and continue to adjust until the environment meets the detection requirements, providing technical support for high temperature field detection; finally, the host computer controls whether to perform multiple simulation tests, and if not, it ends.

[0035] In short, the key parameters of complex environments such as temperature, pressure, flow rate and gas composition can be simulated through the environmental simulation device, and the control environment simulation method provided can meet the needs of adjusting various parameters in complex environments to simulate a variety of complex environments.

[0036] The above-mentioned embodiments are only specific implementation methods of the present invention, which are used to illustrate the technical solution of the present invention, but not to limit it. The protection scope of the present invention is not limited to this. Although the present invention is described in detail with reference to the above-mentioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solution recorded in the above-mentioned embodiments or easily think of changes, or replace some of the technical features therein with equivalents; and these modifications, changes or replacements do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solution of the embodiment of the present invention, and should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the scope of the claims.

Claims

1. A five-hole multifunctional complex environment combustion simulation device, Features: The invention comprises a main control panel (12) and a high temperature resistant tube (6), wherein the main control panel (12) is in the shape of a rectangular parallelepiped, and slots for the high temperature resistant tube (6) to be inserted are provided on the end surfaces at both ends of the main control panel (12), and the high temperature resistant tube (6) passes through the end surfaces at both ends of the main control panel (12) so that the middle section of the high temperature resistant tube (6) is located inside the main control panel (12), and the high temperature resistant tube (6) is supported by a base I (10) and a base II (11), and the base I (10) and the base II (11) are arranged on the bottom surface of the main control panel (12); the two ends of the high temperature resistant tube (6) are sealed by flange I (5) and flange II (16) respectively, and the flange I (5) is provided with a pressure gas flow rate control input port (4), a lens (2) and an observation window I (3), and the incident light of the lens (2) comes from a corresponding tunable semiconductor laser control terminal (1); The flange II (16) is provided with a pressure gas flow rate control output port (15) and an observation window II (14), and the output light of the lens (2) is sent to a planar array photoelectric detector (17), and the planar array photoelectric detector (17) is located on the surface of the flange II (16); three combustion module insertion holes are opened on the top surface of the main control console (12), and a combustion module is embedded in each combustion module insertion hole, and the three combustion modules are combustion module I (7), combustion module II (8), and combustion module III (9); a terminal controller (13) is also arranged on the outer wall of the main control console (12); the planar array photoelectric detector (17) outputs information to the terminal controller (13); and a matching wire groove is preset in the main control console (12) for fixing and arranging a connection line connecting the tunable semiconductor laser control terminal (1) and the terminal controller (13); The terminal controller (13) is provided with a multi-physical field control module and a detection and control module, wherein the multi-physical field control module comprises a temperature control module, a pressure control module, a gas flow rate control module and a gas component control module; and the detection and control module comprises a data processing module, a data storage module and a laser detector control module.

2. A five-hole multifunctional complex environment combustion simulation device according to claim 1, Features: The terminal controller (13) is connected to a host computer.

3. A five-hole multifunctional complex environment combustion simulation device according to claim 1, Features: The lens (2) emits cone-shaped light.

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