CN115541522B - Optical path-adjustable high-temperature optical infrared gas detection method, system and device - Google Patents
Optical path-adjustable high-temperature optical infrared gas detection method, system and device Download PDFInfo
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Abstract
The invention provides a method, a system and a device for detecting high-temperature optical infrared gas with an adjustable optical path. Setting the angle of the light path adjusting reflector according to the type of the target gas to be detected and the number of the type of the target gas to be detected in the polluted gas to be detectedA i And a preset angle change time interval; the infrared light source emits infrared light which enters a high-temperature optical sample cell filled with the polluted gas to be detected through a light cutting wheel; according to a preset angleA i Adjusting a light path adjusting reflector at a preset angle change time interval to enable infrared light to enter the high-temperature optical sample cell according to different incident angles; the infrared light emitted by the infrared light source enters the high-temperature optical sample cell filled with the to-be-detected polluted gas through the light cutting wheel. The system comprises modules corresponding to the method steps.
Description
Technical Field
The invention provides a high-temperature optical infrared gas detection method, system and device with an adjustable optical path, and belongs to the technical field of infrared gas detection.
Background
The concentration detection of certain polluted gases in the polluted gases is particularly important in the processes of polluted gas emission and conventional pollutant ultralow emission. Particularly, for the detection of corrosive gas, the corrosion resistance of a gas detection part needs to be improved, and the gas concentration detection devices for detecting the polluted gas at the present stage have the problems of low detection precision and detection accuracy, low detection efficiency and poor corrosion resistance of the detection devices.
Disclosure of Invention
The invention provides a high-temperature optical infrared gas detection method, a system and a device with adjustable optical path, which are used for solving the problems of lower detection precision and accuracy and lower detection efficiency of the existing infrared gas, and adopt the following technical scheme:
a high-temperature optical infrared gas detection method with an adjustable optical path comprises the following steps:
setting the angle of the light path adjusting reflector according to the type and the number of the target gas to be detected in the polluted gas to be detectedA i And a preset angle change time interval;
the infrared light source emits infrared light which enters a high-temperature optical sample cell filled with the to-be-detected polluted gas through a light cutting wheel;
according to a preset angleA i Adjusting a light path adjusting reflector at a preset angle change time interval to enable infrared light to enter the high-temperature optical sample cell according to different incident angles;
the infrared light emitted by the infrared light source enters the high-temperature optical sample cell filled with the to-be-detected polluted gas through the light cutting wheel.
Further, the angle of the light path adjusting reflector is set according to the type and the number of the target gas to be detected in the polluted gas to be detectedA i And a preset angle change time interval comprising:
extracting the type and the quantity of the type of a target gas to be detected and the type of the gas to be detected, wherein the gas concentration is required to be obtained from the polluted gas to be detected;
setting the angle of the light path adjusting reflector aiming at different types of target gases to be detected according to the types of the target gases to be detectedA i (ii) a Wherein, the first and the second end of the pipe are connected with each other,i=1、2、……、n，nrepresents the number of gas species; and the number of the first and second electrodes,A i the value range of (a) is 15-70 degrees;
and determining the angle change time interval of the light path adjusting reflector by using a time interval setting model according to the gas type quantity. Wherein the time interval setting model is as follows:
wherein, the first and the second end of the pipe are connected with each other,Trepresenting an angle change time interval;T 0 when the system response time is shown, the system response time from the start of gas detection to the display of the gas concentration by the indicator of the high-temperature optical infrared gas detection system can be obtained by testing with experimental gas before the gas detection of the high-temperature optical infrared gas detection system, and can also be obtained by the original design index of the high-temperature optical infrared gas detection system;V q showing the actual volume of the to-be-detected polluted gas filled into the high-temperature optical sample cell during gas detection;V c represents the volume of the high-temperature optical sample cell;L 0 indicating the basic detection optical path of the infrared light,L 0 the value range of (A) is 16m-20m;L i denotes the firstiDetecting a corresponding preset detection optical path by using the medium gas;L max representnThe maximum preset detection optical path corresponding to the gas with the concentration to be detected;L min to representnThe corresponding minimum preset detection optical path in the gas with the concentration to be detected is selected;L maxi representnAmong the three gases with the maximum optical path, the first oneiThe optical path corresponding to the seed gas;L mini representnAmong the three gases with the minimum optical path, the first oneiThe optical path corresponding to the seed gas.
An optical path adjustable high temperature optical infrared gas detection system, the high temperature optical infrared gas detection system comprising:
a setting module for setting the angle of the light path adjusting reflector according to the type of the target gas to be detected and the number of the types of the target gas to be detected in the polluted gas to be detectedA i And a preset angle change time interval;
the light cutting wheel control module is used for adjusting the light cutting wheel to enable the infrared light source to emit infrared light to enter the high-temperature optical sample cell filled with the to-be-detected polluted gas through the light cutting wheel;
an angle adjusting module for adjusting the angle according to a preset angleA i And a predetermined angleAdjusting a light path adjusting reflector at a time interval of degree change to enable infrared light to enter the high-temperature optical sample cell according to different incident angles;
and the gas concentration detection module is used for enabling the infrared light source to emit infrared light to enter the high-temperature optical sample cell filled with the to-be-detected polluted gas through the light cutting wheel.
Wherein the setting module includes:
the extraction module is used for extracting the type and the quantity of the type of the target gas to be detected with the gas concentration to be obtained from the polluted gas to be detected;
an angle setting module for setting the angle of the light path adjusting reflector for different kinds of target gases to be detected according to the kinds of the target gases to be detectedA i (ii) a Wherein the content of the first and second substances,i=1、2、……、n，nrepresents the number of gas species; and the number of the first and second electrodes,A i the value range of (1) is 15-70 degrees;
and the time setting module is used for determining the angle change time interval of the light path adjusting reflector by using a time interval setting model according to the gas type quantity. Wherein the time interval setting model is as follows:
wherein the content of the first and second substances,Trepresenting an angle change time interval;T 0 when the system response time is indicated, the system response time is obtained by the high-temperature optical infrared gas detection system from the start of gas detection to the display of the gas concentration by the indicator, and the system response time can be obtained by testing with experimental gas before the gas detection of the high-temperature optical infrared gas detection system, and can also be obtained by the original design index of the high-temperature optical infrared gas detection system;V q the actual volume of the polluted gas to be detected filled in the high-temperature optical sample cell during gas detection is shown;V c represents the volume of the high-temperature optical sample cell;L 0 indicating the basic detection optical path of the infrared light,L 0 the value range of (A) is 16m-20m;L i denotes the firstiDetecting a corresponding preset detection optical path by using the medium gas;L max to representnThe corresponding maximum preset detection optical path in the gas with the concentration to be detected is planted;L min to representnA corresponding minimum preset detection optical path in the gas with the concentration to be detected;L maxi representnOf the three gases to be detected with the maximum optical path, the secondiThe optical path corresponding to the seed gas;L mini to representnAmong the three gases with the minimum optical path, the first oneiThe optical path corresponding to the seed gas.
A high-temperature optical infrared gas detection device with an adjustable optical path comprises an infrared light source, a light cutting wheel, a high-temperature optical sample cell, a gas detector, an amplifier and an indicator; the light cutting wheel is arranged on a light path of the infrared light source; the high-temperature optical sample cell is arranged at the infrared light output end of the light cutting wheel; the gas detector is arranged at the infrared output end of the high-temperature optical sample cell; the signal output end of the gas detector is connected with the signal input end of the amplifier; the signal output end of the amplifier is connected with the signal input end of the indicator; and the high-temperature optical sample cell is provided with a test gas outlet and a test gas inlet.
Further, the high-temperature optical sample cell comprises a triangular reflector, a single-side inclined plane reflector, a primary plane reflector and a secondary plane reflector; the triangular reflector, the single-side inclined plane reflector and the primary plane reflector are arranged on the inner wall of one side of the high-temperature optical sample cell; the second-level plane reflector is arranged on the inner wall of the other side of the high-temperature optical sample cell.
Furthermore, the triangular reflector, the single-side inclined plane reflector, the primary plane reflector and the secondary plane reflector are made of metal elements Au and Pd.
Further, the triangular reflector comprises a first triangular reflector, a second triangular reflector and a third triangular reflector; the single-side inclined plane reflector comprises a first single-side inclined plane reflector and a second single-side inclined plane reflector; the first-stage plane reflector comprises a first-stage plane reflector and a second first-stage plane reflector.
Furthermore, the first primary plane mirror is arranged on the inner wall of one side of the high-temperature optical sample cell close to the light inlet; the first triangular reflector is arranged on one side, close to the light outlet, of the first primary plane reflector; the first single-side inclined plane reflector is arranged on one side, close to the light outlet, of the first triangular reflector; the second triangular reflector is arranged on one side, close to the light outlet, of the first single-side inclined plane reflector; the second primary plane reflector is arranged on one side, close to the light outlet, of the second triangular reflector; the third triangular reflector is arranged on one side, close to the light outlet, of the second primary plane reflector; the second single-side inclined plane reflector is arranged on one side, close to the light outlet, of the third triangular reflector.
Furthermore, an angle-adjustable light path adjusting reflector is arranged at the light inlet of the high-temperature optical sample cell; after entering the light inlet, the infrared light is subjected to light path angle adjustment through the light path adjusting reflector.
Furthermore, the light path adjusting reflector is fixedly arranged on the outer side of the light inlet through an adjustable telescopic rod; the adjustable telescopic rod is used for adjusting and controlling the angle of the light path adjusting reflector through the angle control module.
The invention has the beneficial effects that:
the method, the system and the device for detecting the high-temperature optical infrared gas with the adjustable optical path can effectively improve the optical path of infrared light in a measuring pool under the condition of shortening the overall length of the measuring pool and further reducing the volume and occupied space of the overall high-temperature optical infrared gas detection device by arranging the reflectors with different shapes and structures in the high-temperature optical sample pool. Meanwhile, the optical path adjustment can be performed on the condition of testing the concentration of various target gases in the same polluted gas to be tested through different angle settings of the optical path adjustment reflector aiming at different types of target gases through the change of the incident angle of the optical path, so that the accuracy of gas concentration detection is effectively improved through the mode of improving the optical path, and the automation performance and the adjustment flexibility of the optical path and the optical path adjustment are effectively improved in the same group of gas concentration detection. On the other hand, because the adjustability of the optical path is high, the detection limit is reduced to the maximum extent by increasing the optical path, the gas detection sensitivity is improved, the better the infrared absorption of the pollutant components is, so that the detection precision of the analyzer is effectively improved, and the detection accuracy for special gases is improved to the maximum extent (for example, the detection difficulty is high due to the low proportion of corrosive gases and gas concentrations in the polluted gases).
Drawings
FIG. 1 is a flow chart of the method of the present invention;
FIG. 2 is a system block diagram of the system of the present invention;
FIG. 3 is a schematic diagram of an apparatus according to the present invention;
fig. 4 is a schematic structural diagram of the high-temperature optical sample cell according to the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
The embodiment of the invention provides a high-temperature optical infrared gas detection method with an adjustable optical path, which comprises the following steps of:
s1, setting the angle of a light path adjusting reflector according to the type of target gas to be detected and the number of the type of the target gas to be detected in the polluted gas to be detectedA i And a preset angle change time interval;
s2, infrared light emitted by an infrared light source enters a high-temperature optical sample cell filled with to-be-detected polluted gas through a light cutting wheel;
s3, according to the preset angleA i Adjusting the light path adjusting reflector at a preset angle change time interval to enable infrared light to enter the high-temperature optical sample cell according to different incident angles;
and S4, enabling infrared light emitted by the infrared light source to enter the high-temperature optical sample cell filled with the to-be-detected polluted gas through the light cutting wheel.
Wherein, the angle of the light path adjusting reflector is set according to the type of the target gas to be detected and the number of the types of the target gas to be detected in the polluted gas to be detectedA i And a preset angle change time interval comprising:
s101, extracting the type and the quantity of the target gas to be detected and the type and the quantity of the gas to be detected of the gas concentration to be obtained from the polluted gas to be detected;
s102, setting the angle of the light path adjusting reflector aiming at different types of target gases to be detected according to the types of the target gases to be detectedA i (ii) a Wherein, the first and the second end of the pipe are connected with each other,i=1、2、……、n，nindicating the number of gas species; and the number of the first and second electrodes,A i the value range of (1) is 15-70 degrees;
and S103, determining the angle change time interval of the light path adjusting reflector by using a time interval setting model according to the gas type quantity. Wherein the time interval setting model is as follows:
wherein the content of the first and second substances,Trepresenting an angle change time interval;T 0 when the system response time is shown, the system response time from the start of gas detection to the display of the gas concentration by the indicator of the high-temperature optical infrared gas detection system can be obtained by testing with experimental gas before the gas detection of the high-temperature optical infrared gas detection system, and can also be obtained by the original design index of the high-temperature optical infrared gas detection system;V q the actual volume of the polluted gas to be detected filled in the high-temperature optical sample cell during gas detection is shown;V c representing the volume of the high temperature optical sample cell;L 0 indicating the basic detection optical path of the infrared light path,L 0 the value range of (a) is 16m-20m;L i is shown asiDetecting a corresponding preset detection optical path by using the medium gas;L max to representnIn the gas whose concentration is to be detectedThe maximum preset detection optical path;L min to representnA corresponding minimum preset detection optical path in the gas with the concentration to be detected;L maxi to representnAmong the three gases with the maximum optical path, the first oneiThe optical path corresponding to the seed gas;L mini representnAmong the three gases with the minimum optical path, the first oneiThe optical path corresponding to the seed gas.
The working principle of the technical scheme is as follows: infrared light emitted by the infrared light source enters the high-temperature optical sample cell through the light cutting wheel; filling a to-be-detected polluted gas into the high-temperature optical sample cell from a test gas inlet of the high-temperature optical sample cell; adjusting the light path adjusting mirror to a preset angleA i Adjusting the angle at a preset angle change time interval to enable infrared light to enter the high-temperature optical sample cell according to different incident angles; the method comprises the following specific steps: according to the angle of the different kinds of target gases to be measuredA i And a preset angle change time interval according to the angleA i Sequentially adjusting the angle of the light path adjusting reflector from large to small or from small to large，Infrared light enters the high-temperature optical sample cell according to different incident angles; detecting the light intensity of infrared light output by the high-temperature optical sample cell through a gas detector, comparing the light intensity of the infrared light output by the high-temperature optical sample cell to obtain an electric signal corresponding to a gas concentration numerical value, amplifying the electric signal through an amplifier, and indicating the concentration scale through an indicator; and after the gas concentration detection is finished, discharging the to-be-detected polluted gas out of the high-temperature optical sample cell from the test gas outlet.
The effect of the above technical scheme is: according to the high-temperature optical infrared gas detection method with the adjustable optical path, the whole length of the measurement cell can be shortened through the arrangement of the reflectors with different shapes and structures in the high-temperature optical sample cell, and the optical path of infrared light in the measurement cell is effectively improved under the condition that the size and occupied space of the whole high-temperature optical infrared gas detection device are further reduced. Meanwhile, the optical path adjustment can be performed on the condition of testing the concentration of various target gases in the same polluted gas to be tested through different angle settings of the optical path adjustment reflector aiming at different types of target gases through the change of the incident angle of the optical path, so that the accuracy of gas concentration detection is effectively improved through the mode of improving the optical path, and the automation performance and the adjustment flexibility of the optical path and the optical path adjustment are effectively improved in the same group of gas concentration detection. On the other hand, because the adjustability of the optical path is high, the detection limit is reduced to the maximum extent by increasing the optical path, the gas detection sensitivity is improved, the better the infrared absorption of the pollutant components is, the detection precision of the analyzer is effectively improved, and the detection accuracy for the special gas is improved to the maximum extent (for example, the detection difficulty is high due to the fact that the proportion of corrosive gas and gas concentration in the polluted gas is low).
Meanwhile, the light path adjustment is carried out through the arrangement in the mode, so that the light path corresponding to the gas can be independently set according to each type of gas under the condition that the same pollutant is measured by multiple target gases, and the detection precision and the detection accuracy of each type of gas are further improved. The problem that the detection accuracy and precision of partial gas concentration are reduced due to the fact that the optical path length is not matched with one or more kinds of gases due to the fact that the uniform and consistent optical paths are achieved is solved. Meanwhile, the light path adjustment is carried out in the above mode, so that the automatic continuous self-service adjustment of the angle can be ensured in the process of detecting the concentration of various gases in the same pollutant, and the continuous automatic adjustment and change of the light path and the light path can be further realized. Therefore, the time interval is set in the above mode, so that enough time can be provided for the detection response of each gas in the continuous change and adjustment process of the light path, and the problem that the detection fails due to the fact that the light path is changed when the detection result of the gas concentration is obtained because the detection of the former gas is not completely responded is prevented. Meanwhile, the setting of the time interval and the size of the optical path is combined, the angle change differential can be indirectly obtained through the change degree of the size of the optical path, the adjusting time of the optical path adjusting reflector is different due to the difference of the angle change differential, the adjusting time of the optical path adjusting reflector is comprehensively fed into the time interval setting through the optical path change factor, and the reasonability of the time interval setting and the full amount of the adjusting time can be effectively improved. On the other hand, the problem that the gas concentration detection efficiency is reduced under the condition that the target gas to be detected is more in type due to overlong time interval can be effectively prevented through the setting of the time interval.
The embodiment of the invention provides a high-temperature optical infrared gas detection system with an adjustable optical path, as shown in fig. 2, the high-temperature optical infrared gas detection system comprises:
a setting module for setting the angle of the light path adjusting reflector according to the type and the number of the target gas to be detected in the polluted gas to be detectedA i And a preset angle change time interval;
the light cutting wheel control module is used for adjusting the light cutting wheel to enable the infrared light source to emit infrared light to enter the high-temperature optical sample cell filled with the to-be-detected polluted gas through the light cutting wheel;
an angle adjusting module for adjusting the angle according to a preset angleA i Adjusting a light path adjusting reflector at a preset angle change time interval to enable infrared light to enter the high-temperature optical sample cell according to different incident angles;
and the gas concentration detection module is used for enabling the infrared light source to emit infrared light to enter the high-temperature optical sample cell filled with the to-be-detected polluted gas through the light cutting wheel.
Wherein the setting module includes:
the extraction module is used for extracting the type and the quantity of the target gas to be detected and the type of the gas to be detected, wherein the target gas to be detected has the gas concentration to be obtained from the polluted gas to be detected;
an angle setting module for setting the angle of the light path adjusting reflector for different kinds of target gases to be detected according to the kinds of the target gases to be detectedA i (ii) a Wherein the content of the first and second substances,i=1、2、……、n，nrepresents the number of gas species; and the number of the first and second electrodes,A i the value range of (a) is 15-70 degrees;
and the time setting module is used for determining the angle change time interval of the light path adjusting reflector by using a time interval setting model according to the gas type quantity. Wherein the time interval setting model is as follows:
wherein the content of the first and second substances,Trepresenting an angle change time interval;T 0 when the system response time is indicated, the system response time is obtained by the high-temperature optical infrared gas detection system from the start of gas detection to the display of the gas concentration by the indicator, and the system response time can be obtained by testing with experimental gas before the gas detection of the high-temperature optical infrared gas detection system, and can also be obtained by the original design index of the high-temperature optical infrared gas detection system;V q showing the actual volume of the to-be-detected polluted gas filled into the high-temperature optical sample cell during gas detection;V c representing the volume of the high temperature optical sample cell;L 0 indicating the basic detection optical path of the infrared light path,L 0 the value range of (A) is 16m-20m;L i is shown asiDetecting a corresponding preset detection optical path by using medium gas;L max representnThe corresponding maximum preset detection optical path in the gas with the concentration to be detected is planted;L min to representnA corresponding minimum preset detection optical path in the gas with the concentration to be detected;L maxi representnOf the three gases to be detected with the maximum optical path, the secondiThe optical path corresponding to the seed gas;L mini representnOf the three gases with the minimum optical path, the second oneiThe optical path corresponding to the seed gas.
The working principle of the technical scheme is as follows: firstly, the setting module sets the angle of the light path adjusting reflector according to the type of the target gas to be detected and the quantity of the type of the target gas to be detected in the polluted gas to be detectedA i And a preset angle change time interval; then, the light cutting wheel is adjusted by the light cutting wheel control module, so that infrared light emitted by the infrared light source enters the gas filled with the polluted gas to be measured through the light cutting wheelA warm optical sample cell; then, an angle adjusting module is adopted to adjust the angle according to the preset angleA i Adjusting the light path adjusting reflector at a preset angle change time interval to enable infrared light to enter the high-temperature optical sample cell according to different incident angles; and finally, the gas concentration detection module is used for enabling the infrared light source to emit infrared light to enter the high-temperature optical sample cell filled with the to-be-detected polluted gas through the light cutting wheel.
The operation process of the setting module comprises the following steps:
firstly, extracting the type and the quantity of the target gas to be detected and the type of the gas to be detected, wherein the gas concentration is required to be obtained from the polluted gas to be detected, through an extraction module;
then, an angle setting module is used for setting the angle of the light path adjusting reflector aiming at different types of target gases to be measured according to the types of the target gases to be measuredA i (ii) a Wherein the content of the first and second substances,i=1、2、……、n，nindicating the number of gas species; and the number of the first and second electrodes,A i the value range of (1) is 15-70 degrees;
and finally, determining the angle change time interval of the light path adjusting reflector by using a time interval setting model according to the gas type quantity through a time setting module.
The effect of the above technical scheme is as follows: the high-temperature optical infrared gas detection system based on the high-temperature optical sample cell provided by the embodiment can shorten the overall length of the measurement cell through the arrangement of the reflectors with different shapes and structures in the high-temperature optical sample cell, so that the optical path of infrared light in the measurement cell is effectively improved under the conditions that the volume and occupied space of the overall high-temperature optical infrared gas detection device are reduced. Meanwhile, the optical path adjustment can be performed on the condition of testing the concentration of various target gases in the same polluted gas to be tested through different angle settings of the optical path adjustment reflector aiming at different types of target gases through the change of the incident angle of the optical path, so that the accuracy of gas concentration detection is effectively improved through the mode of improving the optical path, and the automation performance and the adjustment flexibility of the optical path and the optical path adjustment are effectively improved in the same group of gas concentration detection. On the other hand, because the adjustability of the optical path is high, the detection limit is reduced to the maximum extent by increasing the optical path, the gas detection sensitivity is improved, the better the infrared absorption of the pollutant components is, the detection precision of the analyzer is effectively improved, and the detection accuracy for the special gas is improved to the maximum extent (for example, the detection difficulty is high due to the fact that the proportion of corrosive gas and gas concentration in the polluted gas is low).
Meanwhile, the light path adjustment is carried out through the arrangement in the mode, so that the light path corresponding to the gas can be independently set according to each type of gas under the condition that the same pollutant is measured by multiple target gases, and the detection precision and the detection accuracy of each type of gas are further improved. The problem that the detection accuracy and precision of partial gas concentration are reduced due to the fact that the optical path length is not matched with one or more kinds of gases due to the uniform optical path is solved. Meanwhile, the light path adjustment is carried out in the above mode, so that the automatic continuous self-service adjustment of the angle can be ensured in the process of detecting the concentration of various gases in the same pollutant, and the continuous automatic adjustment and change of the light path and the light path can be further realized. Therefore, the time interval is set in the above mode, so that enough time can be provided for the detection response of each gas in the continuous change and adjustment process of the light path, and the problem that the detection fails due to the fact that the light path is changed when the detection result of the gas concentration is obtained because the detection of the former gas is not completely responded is prevented. Meanwhile, the angle change differential can be indirectly acquired through the change degree of the optical distance by combining the setting of the optical distance and the setting of the optical distance, the adjusting time of the optical path adjusting reflector is different due to the difference of the angle change differential, and the adjusting time factor of the optical path adjusting reflector is comprehensively entered into the time distance setting through the optical distance change factor, so that the reasonability of the time distance setting and the full amount of the adjusting time can be effectively improved. On the other hand, the problem that the gas concentration detection efficiency is reduced under the condition that the target gas to be detected is more in type due to overlong time interval can be effectively prevented through the setting of the time interval.
According to one embodiment of the invention, the high-temperature optical infrared gas detection device based on the high-temperature optical sample cell comprises an infrared light source 1, a light cutting wheel 2, a high-temperature optical sample cell 3, a gas detector 4, an amplifier 5 and an indicator 6; the light cutting wheel 2 is arranged on a light path of the infrared light source 1; the high-temperature optical sample cell 3 is arranged at the infrared light output end of the light cutting wheel 2; the gas detector 4 is arranged at the infrared output end of the high-temperature optical sample cell 3; the signal output end of the gas detector 4 is connected with the signal input end of the amplifier 5; the signal output end of the amplifier 5 is connected with the signal input end of the indicator; and the high-temperature optical sample cell 3 is provided with a test gas outlet 7 and a test gas inlet 9. The asymmetry in the high-temperature optical sample cell 3 means that the optical path 37 of the infrared light entering the high-temperature optical sample cell 3 is asymmetric along the central axis of the high-temperature optical sample cell 3 in the longitudinal direction of the high-temperature optical sample cell 3. Wherein the internal temperature of the high-temperature optical sample cell is controlled within the range of 185-200 ℃. Wherein, a plurality of filters 20 are arranged on the light cutting wheel 2.
The high-temperature optical infrared gas detection device further comprises a detection control platform, and the detection control platform is used for controlling the high-temperature optical sample cell 3 to adjust and control the angle of the reflector in the light path adjustment mode according to different gas to be detected in concentration.
The high-temperature optical sample cell 3 comprises a triangular reflector 31, a single-side inclined plane reflector 32, a primary plane reflector 33 and a secondary plane reflector 34; the triangular reflector 31, the single-side inclined plane reflector 32 and the primary plane reflector 33 are arranged on the inner wall of one side of the high-temperature optical sample cell 3; the secondary plane mirror 34 is arranged on the inner wall of the other side of the high-temperature optical sample cell 3. The triangular reflector 31, the single-side inclined plane reflector 32, the primary plane reflector 33 and the secondary plane reflector 34 are made of metal elements Au and Pd. AU and ba particles are smaller, and after high-intensity polishing, the mirror surface reflection rate of the lens is higher than that of lenses made of other materials (the conventional lens is made of magnesium-aluminum alloy), so that the light energy loss of infrared light in multiple reflection is smaller, the optical path of the analyzer can be very long, the longer the optical path is, the better the detection limit is, the better the resolution and the sensitivity is, and the advantage is achieved when low-concentration gas is detected.
Specifically, an electric tracing band is adhered to the periphery of the wall of the high-temperature optical sample cell 3, and a temperature sensor and an infrared detection device control module are arranged on the periphery of the high-temperature optical sample cell; the temperature sensor collects temperature information in the high-temperature optical sample cell 3 in real time and transmits the temperature information to the infrared detection device control module, the infrared detection device control module adjusts the temperature in the high-temperature optical sample cell 3 according to the temperature information monitored by the temperature sensor in real time, and the internal temperature is controlled within the range of 185-200 ℃; the infrared detection device control module can adopt a CPU program control circuit board and a controllable PLC power-on and power-off controller to control the power-on and power-off of the heat tracing band. Specifically, the heat tracing band generates heat after being electrified, and the temperature sensor feeds corresponding signals back to the CPU to inform the PLC power-on and power-off controller in combination with the set upper and lower limit values after sensing the temperature, so that the heating and the balance of the approved temperature are realized through intermittent power-on and power-off.
At present, all industrial pollution sources contain a certain amount of humidity (water vapor) in the emission process of atmospheric pollutants, the temperature of flue gas is usually between 80 ℃ and 200 ℃, the whole environment is hot and humid gas, a conventional analyzer needs to cool and dehumidify the hot and humid sample gas, but the condensation loss (such as SO) of the measured sample gas can be caused by the change of the dew point of the flue gas of a product such as the temperature reduction and dehumidification (SO) only 2 、NO 2 、NO x 、NH 3 HCL, etc.) may even produce secondary reactions that affect accurate measurement of the data. In the process of detecting the atmospheric pollutant gas, if the instrument of the infrared absorption method is adopted, H must be considered 2 Cross interference effects of O gas, conventional cold dry instrumentation removes water but it is not possible to remove H 2 O is removed by 100%, and H remains 2 The analyzer cannot accurately compensate data due to the interference generated by the O, but the analyzer adopts a heating type device to ensure H 2 O is completely gasified and can be directly communicated with H 2 O are measured together, and the analyzer can dynamically perform cross interference of multiple points and gradients in the whole processAnd (6) compensation. Therefore, the data detected by the analyzer is more real and reliable.
The triangular reflector 31 comprises a first triangular reflector, a second triangular reflector and a third triangular reflector; the single-sided bevel mirror 32 includes a first single-sided bevel mirror and a second single-sided bevel mirror; the primary plane mirror 33 includes a first primary plane mirror and a second primary plane mirror. The first primary plane reflector is arranged on the inner wall of one side of the high-temperature optical sample cell 3 close to the light inlet 35; the first triangular reflector is arranged on one side, close to the light outlet 36, of the first primary plane reflector; the first single-side inclined plane reflector is arranged on one side, close to the light outlet 36, of the first triangular reflector; the second triangular reflector is arranged on one side, close to the light outlet 36, of the first single-side inclined plane reflector; the second primary plane reflector is arranged on one side, close to the light outlet 36, of the second triangular reflector; the third triangular reflector is arranged on one side, close to the light outlet 36, of the second primary plane reflector; the second single-side inclined plane reflector is arranged on one side, close to the light outlet 36, of the third triangular reflector.
An angle-adjustable light path adjusting reflector 38 is arranged at the light inlet 35 of the high-temperature optical sample cell 3; after entering the light inlet 35, the infrared light passes through the light path adjusting mirror to adjust the light path adjusting angle.
The light path adjusting reflector 38 is fixedly mounted on the outer side of the light inlet 35 through an adjustable telescopic rod 39; the adjustable telescopic rod 39 performs angle adjustment control of the light path adjusting reflector 38 through an angle control module.
The working principle of the technical scheme is as follows: according to the high-temperature optical infrared gas detection device arranged in the mode, infrared light enters the high-temperature optical sample cell, and the degree of an effective optical path and the adjustability of the length of the optical path can be realized through the combination and the position arrangement of the reflectors in different shapes in the high-temperature optical sample cell. Meanwhile, the optical path length can be improved to the maximum extent under the measuring pool specification of the same length through the asymmetrical arrangement of the optical path of the high-temperature optical sample pool, and different from the traditional measuring pool only keep the optical path to extend along the longitudinal direction of the optical path inlet and outlet of the measuring pool. The infrared absorption rate of pollutant components is increased to the maximum extent through the improvement of the contact diversity of gas and a light path, and further, the gas detection precision and the detection accuracy are effectively improved.
The specific detection process is as follows: infrared light emitted by the infrared light source enters the high-temperature optical sample cell through the light cutting wheel; filling a to-be-detected polluted gas into the high-temperature optical sample cell from a test gas inlet of the high-temperature optical sample cell; adjusting the light path adjusting mirror to a preset angleA i Adjusting the angle at a preset angle change time interval to enable infrared light to enter the high-temperature optical sample cell according to different incident angles; the method comprises the following specific steps: according to the angle of the different target gases to be measuredA i And a predetermined angle change time interval in terms of angleA i Sequentially adjusting the angle of the light path adjusting reflector from large to small or from small to large，Infrared light enters the high-temperature optical sample cell according to different incident angles; detecting the intensity of infrared light output by the high-temperature optical sample cell through a gas detector, comparing the intensity of the infrared light output by the high-temperature optical sample cell to obtain an electric signal corresponding to a gas concentration numerical value, amplifying the electric signal through an amplifier, and indicating the concentration scale through an indicator; and after the gas concentration detection is finished, discharging the to-be-detected polluted gas out of the high-temperature optical sample cell from the test gas outlet.
Wherein, the angle of the light path adjusting reflector is set according to the type of the target gas to be detected and the number of the types of the target gas to be detected in the polluted gas to be detectedA i And a preset angle change time interval comprising:
extracting the type and the quantity of the type of a target gas to be detected with the gas concentration to be obtained from the polluted gas to be detected;
setting the angle of the light path adjusting reflector aiming at different types of target gases to be detected according to the types of the target gases to be detectedA i (ii) a Wherein the content of the first and second substances,i=1、2、……、n，nrepresents the number of gas species; and also,A i the value range of (a) is 15-70 degrees;
and determining the angle change time interval of the light path adjusting reflector by using a time interval setting model according to the gas type quantity. Wherein the time interval setting model is as follows:
wherein, the first and the second end of the pipe are connected with each other,Trepresenting an angle change time interval;T 0 when the system response time is shown, the system response time from the start of gas detection to the display of the gas concentration by the indicator of the high-temperature optical infrared gas detection system can be obtained by testing with experimental gas before the gas detection of the high-temperature optical infrared gas detection system, and can also be obtained by the original design index of the high-temperature optical infrared gas detection system;V q the actual volume of the polluted gas to be detected filled in the high-temperature optical sample cell during gas detection is shown;V c representing the volume of the high temperature optical sample cell;L 0 indicating the basic detection optical path of the infrared light,L 0 the value range of (A) is 16m-20m;L i is shown asiDetecting a corresponding preset detection optical path by using medium gas;L max to representnThe corresponding maximum preset detection optical path in the gas with the concentration to be detected is planted;L min to representnThe corresponding minimum preset detection optical path in the gas with the concentration to be detected is selected;L maxi representnOf the three gases to be detected with the maximum optical path, the secondiThe optical path corresponding to the seed gas;L mini to representnOf the three gases with the minimum optical path, the second oneiSeed gasThe optical path corresponding to the volume.
The effect of the above technical scheme is as follows: according to the high-temperature optical infrared gas detection device with the adjustable optical path, the whole length of the measurement pool can be shortened through the arrangement of the reflectors with different shapes and structures in the high-temperature optical sample pool, and therefore the optical path of infrared light in the measurement pool is effectively improved under the condition that the size and occupied space of the whole high-temperature optical infrared gas detection device are reduced. Meanwhile, the optical path adjustment can be performed on the condition of testing the concentration of various target gases in the same polluted gas to be tested through different angle settings of the optical path adjustment reflector aiming at different types of target gases through the change of the incident angle of the optical path, so that the accuracy of gas concentration detection is effectively improved through the mode of improving the optical path, and the automation performance and the adjustment flexibility of the optical path and the optical path adjustment are effectively improved in the same group of gas concentration detection. On the other hand, because the adjustability of the optical path is high, the detection limit is reduced to the maximum extent by increasing the optical path, the gas detection sensitivity is improved, the better the infrared absorption of the pollutant components is, so that the detection precision of the analyzer is effectively improved, and the detection accuracy for special gases is improved to the maximum extent (for example, the detection difficulty is high due to the low proportion of corrosive gases and gas concentrations in the polluted gases).
Meanwhile, the light path adjustment is carried out through the arrangement in the mode, so that the light path corresponding to the gas can be independently set according to each type of gas under the condition that the same pollutant is measured by multiple target gases, and the detection precision and the detection accuracy of each type of gas are further improved. The problem that the detection accuracy and precision of partial gas concentration are reduced due to the fact that the optical path length is not matched with one or more kinds of gases due to the uniform optical path is solved. Meanwhile, the light path adjustment is carried out in the above mode, so that the automatic continuous self-service adjustment of the angle can be ensured in the process of detecting the concentration of various gases in the same pollutant, and the continuous automatic adjustment and change of the light path and the light path can be further realized. Therefore, the time interval is set in the above mode, so that enough time can be provided for the detection response of each gas in the continuous change and adjustment process of the light path, and the problem that the detection fails due to the fact that the light path is changed when the detection result of the gas concentration is obtained because the detection of the former gas does not completely respond is prevented. Meanwhile, the angle change differential can be indirectly acquired through the change degree of the optical distance by combining the setting of the optical distance and the setting of the optical distance, the adjusting time of the optical path adjusting reflector is different due to the difference of the angle change differential, and the adjusting time factor of the optical path adjusting reflector is comprehensively entered into the time distance setting through the optical distance change factor, so that the reasonability of the time distance setting and the full amount of the adjusting time can be effectively improved. On the other hand, the problem that the gas concentration detection efficiency is reduced under the condition that the target gas to be detected is more in types due to overlong time interval can be effectively prevented through the setting of the time interval.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. The method for detecting the high-temperature optical infrared gas with the adjustable optical path is characterized by comprising the following steps of:
setting the angle of the light path adjusting reflector according to the type and the number of the target gas to be detected in the polluted gas to be detectedA i And a preset angle change time interval;
the infrared light source emits infrared light which enters a high-temperature optical sample cell filled with the to-be-detected polluted gas through a light cutting wheel;
according to a preset angleA i Adjusting a light path adjusting reflector at a preset angle change time interval to enable infrared light to enter the high-temperature optical sample cell according to different incident angles;
the infrared light emitted by the infrared light source enters the high-temperature optical sample cell filled with the polluted gas to be detected through the light cutting wheel.
2. The high-temperature optical infrared gas detection method as claimed in claim 1, wherein the angle of the light path adjusting mirror is set according to the kind of the target gas to be detected and the number of the kinds of the target gas in the contaminated gas to be detectedA i And a preset angle change time interval comprising:
extracting the type and the quantity of the type of a target gas to be detected and the type of the gas to be detected, wherein the gas concentration is required to be obtained from the polluted gas to be detected;
setting the angle of the light path adjusting reflector aiming at different types of target gases to be detected according to the types of the target gases to be detectedA i (ii) a Wherein the content of the first and second substances,i=1、2、……、n，nindicating the number of gas species;
and determining the angle change time interval of the light path adjusting reflector by using a time interval setting model according to the gas type quantity.
3. An optical path adjustable high temperature optical infrared gas detection system, characterized in that, the high temperature optical infrared gas detection system includes:
a setting module for setting the angle of the light path adjusting reflector according to the type of the target gas to be detected and the number of the types of the target gas to be detected in the polluted gas to be detectedA i And a preset angle change time interval;
the light cutting wheel control module is used for adjusting the light cutting wheel to enable the infrared light source to emit infrared light to enter the high-temperature optical sample cell filled with the to-be-detected polluted gas through the light cutting wheel;
an angle adjusting module for adjusting the angle according to a preset angleA i Adjusting a light path adjusting reflector at a preset angle change time interval to enable infrared light to enter the high-temperature optical sample cell according to different incident angles;
and the gas concentration detection module is used for enabling the infrared light source to emit infrared light to enter the high-temperature optical sample cell filled with the to-be-detected polluted gas through the light cutting wheel.
4. The high-temperature optical infrared gas detection device with the adjustable optical path is characterized by comprising an infrared light source (1), a light cutting wheel (2), a high-temperature optical sample cell (3), a gas detector (4), an amplifier (5) and an indicator (6); the light cutting wheel (2) is arranged on a light path of the infrared light source (1); the high-temperature optical sample cell (3) is arranged at the infrared light output end of the light cutting wheel (2); the gas detector (4) is arranged at the infrared output end of the high-temperature optical sample cell (3); the signal output end of the gas detector (4) is connected with the signal input end of the amplifier (5); the signal output end of the amplifier (5) is connected with the signal input end of the indicator; the high-temperature optical sample cell (3) is provided with a test gas outlet (7) and a test gas inlet (9);
the high-temperature optical sample cell (3) comprises a triangular reflector (31), a single-side inclined plane reflector (32), a primary plane reflector (33) and a secondary plane reflector (34); the triangular reflector (31), the single-side inclined plane reflector (32) and the primary plane reflector (33) are arranged on the inner wall of one side of the high-temperature optical sample cell (3); the secondary plane mirror (34) is arranged on the inner wall of the other side of the high-temperature optical sample cell (3).
5. A high temperature optical infrared gas detecting device according to claim 4, characterized in that said triangular reflector (31), said one-side inclined plane reflector (32), said primary plane reflector (33) and said secondary plane reflector (34) are made of metal element Au and metal element Pd.
6. A high temperature optical infrared gas detection device according to claim 4, characterized in that said triangular reflector (31) comprises a first triangular reflector, a second triangular reflector and a third triangular reflector; the single-sided bevel mirror (32) comprises a first single-sided bevel mirror and a second single-sided bevel mirror; the primary plane mirror (33) comprises a first primary plane mirror and a second primary plane mirror.
7. The high-temperature optical infrared gas detection device according to claim 6, characterized in that the first primary plane mirror is disposed on an inner wall of one side of the high-temperature optical sample cell (3) near the light inlet (35); the first triangular reflector is arranged on one side, close to the light outlet (36), of the first primary plane reflector; the first single-side inclined plane reflector is arranged on one side, close to the light outlet (36), of the first triangular reflector; the second triangular reflector is arranged on one side, close to the light outlet (36), of the first single-side inclined plane reflector; the second primary plane reflector is arranged on one side, close to the light outlet (36), of the second triangular reflector; the third triangular reflector is arranged on one side, close to the light outlet (36), of the second primary plane reflector; the second single-side inclined plane reflector is arranged on one side, close to the light outlet (36), of the third triangular reflector.
8. The high-temperature optical infrared gas detection device according to claim 4, characterized in that an angle-adjustable light path adjusting reflector (38) is arranged at the light inlet (35) of the high-temperature optical sample cell (3); after entering the light inlet (35), the infrared light passes through the light path adjusting reflector to adjust the light path adjusting angle.
9. The high-temperature optical infrared gas detection device according to claim 8, wherein the optical path adjusting reflector (38) is fixedly installed outside the light inlet (35) through an adjustable telescopic rod (39); the adjustable telescopic rod (39) is used for adjusting and controlling the angle of the light path adjusting reflector (38) through the angle control module.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100052691A (en) * | 2008-11-11 | 2010-05-20 | 한국표준과학연구원 | Measuring apparatus and method of multi gas pollutants using the ndir detector with multi gas filter |
| CN102183482A (en) * | 2011-02-23 | 2011-09-14 | 中国科学院安徽光学精密机械研究所 | Non-disperse infrared multi-component flue gas analyzer |
| CN103245614A (en) * | 2013-05-14 | 2013-08-14 | 太原理工大学 | Intelligent infrared methane gas detection device |
| CN103398950A (en) * | 2013-08-20 | 2013-11-20 | 天津亿利科能源科技发展股份有限公司 | Array-type multi-optical-path system for gas-phase monitoring |
| CN108918422A (en) * | 2018-05-04 | 2018-11-30 | 中国科学院长春光学精密机械与物理研究所 | A kind of gas absorption cell |
| CN114199815A (en) * | 2020-09-17 | 2022-03-18 | 北京乐氏联创科技有限公司 | High-temperature infrared flue gas analysis method |
-
2022
- 2022-12-01 CN CN202211523882.0A patent/CN115541522B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100052691A (en) * | 2008-11-11 | 2010-05-20 | 한국표준과학연구원 | Measuring apparatus and method of multi gas pollutants using the ndir detector with multi gas filter |
| CN102183482A (en) * | 2011-02-23 | 2011-09-14 | 中国科学院安徽光学精密机械研究所 | Non-disperse infrared multi-component flue gas analyzer |
| CN103245614A (en) * | 2013-05-14 | 2013-08-14 | 太原理工大学 | Intelligent infrared methane gas detection device |
| CN103398950A (en) * | 2013-08-20 | 2013-11-20 | 天津亿利科能源科技发展股份有限公司 | Array-type multi-optical-path system for gas-phase monitoring |
| CN108918422A (en) * | 2018-05-04 | 2018-11-30 | 中国科学院长春光学精密机械与物理研究所 | A kind of gas absorption cell |
| CN114199815A (en) * | 2020-09-17 | 2022-03-18 | 北京乐氏联创科技有限公司 | High-temperature infrared flue gas analysis method |
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