Gas flux monitoring device and method based on Fourier infrared technology

Abstract

The invention provides a gas flux monitoring device and method based on the Fourier infrared technology, and relates to the technical field of optical detection.The monitoring device comprises an interferometer, a gas pool device and a detector, and the gas pool device comprises a support; the gas tank is mounted on the bracket, and mounting cavities are formed in the two ends of the gas tank; the two reflecting mirror assemblies are rotationally arranged in the mounting cavities in the two ends of the gas pool respectively, and at least one side of each reflecting mirror assembly is provided with a reflecting mirror; the cleaning assembly is installed on the support, and the cleaning assembly is inserted into the installation cavity and located on one side of the reflector assembly. And when the to-be-cleaned reflecting mirror rotates into the mounting cavity corresponding to the cleaning assembly, the to-be-detected gas permeating into the gas pool in the mounting cavity is reversely discharged back to the gas pool. The gas flux monitoring device and method provided by the invention can effectively reduce the energy loss of infrared light when the infrared light is reflected in the optical path gas pool, so as to ensure the accuracy of the monitoring result.

Description

Technical Field

[0001] The present invention relates to the field of optical detection technology, and in particular to a gas flux monitoring device and method based on Fourier infrared technology. Background Art

[0002] Fourier transform infrared spectroscopy (FTIR) is one of the most ideal methods for gas concentration detection. It has high sensitivity, accurate wave number, good repeatability, and a wide range of applications. With the continuous innovation of FTIR instrument models and the continuous improvement of instrument performance, FTIR technology has been widely used in various fields of production and research.

[0003] When Fourier infrared technology is currently used for gas flux monitoring, the reflector in the optical path gas pool is exposed to the gas pool for a long time and will be contaminated by the gas to be detected in the gas pool, thereby affecting the reflection effect of the infrared light through the reflector, resulting in a large loss of light energy of the infrared light when it is reflected by the reflector. Summary of the invention

[0004] In view of the shortcomings of the prior art mentioned above, the purpose of the present invention is to provide a gas flux monitoring device and method based on Fourier infrared technology, which is used to solve the problem in the prior art that when using Fourier infrared technology for gas flux monitoring, the reflector in the optical path gas pool is exposed to the gas pool for a long time and will be contaminated by the gas to be detected in the gas pool, thereby affecting the reflection effect of the infrared light through the reflector, resulting in a large loss of light energy of the infrared light when it is reflected by the reflector.

[0005] To achieve the above-mentioned purpose and other related purposes, the present invention provides a gas flux monitoring device based on Fourier infrared technology, the monitoring device comprising an interferometer, a gas pool device and a detector, the gas pool device comprising: a bracket; a gas pool, the gas pool is mounted on the bracket, and mounting cavities are provided at both ends of the gas pool; a reflector assembly, two reflector assemblies are respectively rotatably arranged in the mounting cavities at both ends of the gas pool, and at least one side of the reflector assembly is provided with a reflector; and a cleaning assembly, the cleaning assembly is mounted on the bracket, and the cleaning assembly is inserted in the mounting cavity and is located on one side of the reflector assembly; when the reflector to be cleaned is rotated to the mounting cavity corresponding to the cleaning assembly, the gas to be detected in the gas pool that has penetrated into the mounting cavity is discharged back to the gas pool, and the surface of the reflector placed in the mounting cavity is cleaned, and after the cleaning, the mounting cavity is vacuumed, and then the reflector is returned to the gas pool.

[0006] In one embodiment of the present invention, the gas pool includes: a pool body, with a light inlet, a light outlet, an air inlet and an air outlet at both ends of the pool body, respectively. The light inlet and the light outlet are respectively arranged at the ends of the gas pool outside the installation cavity.

[0007] In one embodiment of the present invention, the reflector assembly includes: a rotating seat, a ball groove is provided in the installation cavity, the rotating seat is rotatably arranged in the ball groove, and the contact surface between the rotating seat and the ball groove is a spherical surface; and a driving motor, the driving motor is installed on the outside of the gas pool, and the power output end of the driving motor is connected to the rotating seat to drive the rotating seat to flip back and forth; wherein the reflectors are respectively arranged on both sides of the rotating seat.

[0008] In one embodiment of the present invention, the cleaning component includes: an exhaust component, which is installed on a bracket, and a power output end of the exhaust component is inserted in the installation cavity to exhaust the installation cavity before the reflector assembly flips back and forth to switch the reflector; and a flushing and drying component, which is inserted on the side of the gas pool, and the power output end of the flushing and drying component is located in the installation cavity between the exhaust component and the reflector assembly, so as to flush the surface of the reflector corresponding to the return switch with anhydrous ethanol, and blow it dry after flushing.

[0009] In one embodiment of the present invention, the exhaust assembly includes: a piston, which is slidably inserted in the installation cavity, and the end surface of the installation cavity is provided with a piston groove corresponding to the reflector assembly and the reflector; a push motor, which is installed on the bracket, and the power output end of the push motor is connected to the piston; and a ventilation assembly, an exhaust port is opened on the gas pool, and the ventilation assembly switches the exhaust gas in the installation cavity to the outside and the gas pool through the exhaust port.

[0010] In one embodiment of the present invention, the ventilation component includes: a one-way valve, which is movably inserted in the exhaust port, the air inlet end of the one-way valve corresponds to the installation cavity, and the air outlet end of the one-way valve corresponds to the inner wall of the exhaust port; a switching valve, the switching valve is installed on the side wall of the gas pool, and the air inlet end of the switching valve corresponds to the inner wall of the exhaust port, and the air inlet end of the switching valve is arranged corresponding to the air outlet end of the one-way valve, the first air outlet end of the switching valve is interconnected with the inner cavity of the gas pool through a circulation pipeline, and the second air outlet end of the switching valve is connected to the outside; and a pushing motor, the pushing motor is installed on the outer wall of the gas pool, and the power output end of the pushing motor is connected to the one-way valve.

[0011] In one embodiment of the present invention, the flushing and drying assembly includes: a sleeve, two sleeves are respectively installed on the upper and lower sides of one end of the gas pool, and are connected to the installation cavity; a first plug rod, the first plug rod is slidably inserted in one sleeve, and a plurality of nozzles are provided on the surface of the first plug rod to spray anhydrous ethanol onto the reflector; a second plug rod, the second plug rod is movably inserted in another sleeve; a first push motor, the first push motor is installed on the bracket, and the power output end of the first push motor is connected to the first plug rod; and a second push motor, the second push motor is installed on the bracket, and the power output end of the second push motor is connected to the second plug rod.

[0012] In one embodiment of the present invention, an air inlet pipeline is inserted on the first plug rod, and one end of the air inlet pipeline is connected to the side wall of the first plug rod; an air outlet pipeline is inserted on the second plug rod, and one end of the air outlet pipeline is connected to the side wall of the second plug rod; wherein dry gas is introduced into the air inlet pipeline, enters the installation cavity through the side wall of the first plug rod, and is discharged from the corresponding air outlet pipeline on the second plug rod.

[0013] In one embodiment of the present invention, the end surface of the first plug rod corresponds to the inner side wall of the installation cavity, so that when the first plug rod withdraws from the installation cavity, the end surface of the first plug rod forms a blockage on the inner side wall of the installation cavity; the end surface of the second plug rod corresponds to the inner side wall of the installation cavity, so that when the second plug rod withdraws from the installation cavity, the end surface of the second plug rod forms a blockage on the inner side wall of the installation cavity.

[0014] The present invention also provides a monitoring method for the aforementioned gas flux monitoring device based on Fourier infrared technology, comprising the following steps: obtaining cleaning signals for the reflector assemblies at both ends of the gas pool, controlling the reflector on the reflector assembly on one side of the gas pool to flip to the corresponding side of the cleaning assembly; controlling the cleaning assembly to push and discharge the gas to be detected in the installation cavity between the cleaning assembly and the flipped reflector assembly into the gas pool; after the gas to be detected is emptied, controlling the cleaning assembly to spray the surface of the flipped reflector assembly with anhydrous ethanol in the installation cavity; after the spraying is completed, controlling the cleaning assembly to blow and dry the flipped reflector assembly on the inner side of the installation cavity; after the blowing and drying is completed, controlling the cleaning assembly to empty the gas in the installation cavity, and then flipping the flipped reflector assembly back into the gas pool.

[0015] As described above, the gas flux monitoring device and method based on Fourier infrared technology of the present invention have the following beneficial effects: through the cooperation between the reflector assembly and the gas pool, the reflector assembly can be used to switch back and forth between the gas pool and the installation cavity on one side of the cleaning assembly, so that after switching, the reflector can be sealed and automatically cleaned to reduce the energy loss of infrared light when passing through the reflector. In addition, the gas can be emptied after the reflector assembly is switched, which can avoid the external discharge of the gas to be detected in the gas pool, and also avoid the external gas from entering the gas pool and polluting the gas to be detected in the gas pool. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of the overall structure of the gas pool device of the present invention.

[0017] Figure 2 A cross-sectional view of one end of a gas cell device according to an embodiment of the present invention is shown.

[0018] Figure 3A cross-sectional view showing the other end of a gas cell device according to an embodiment of the present invention.

[0019] Figure 4 Shown is a schematic structural diagram of a cleaning component provided by an embodiment of the present invention.

[0020] Figure 5 Shown is a schematic structural diagram of a cleaning assembly after the installation cavity is opened provided by an embodiment of the present invention.

[0021] Figure 6 Shown is a schematic structural diagram of a washing and drying assembly provided in one embodiment of the present invention.

[0022] Figure 7 The display is provided by an embodiment of the present invention Figure 6 Schematic diagram of the structure of the washing and drying component after removing the installation cavity.

[0023] Figure 8 Shown is a schematic structural diagram of an exhaust assembly provided in one embodiment of the present invention.

[0024] Fig. 9 Shown is a schematic structural diagram of a ventilation component provided by an embodiment of the present invention.

[0025] Fig.10 The display is provided by an embodiment of the present invention Fig. 9 Enlarged view of point A in the middle.

[0026] Fig.11 Shown is a flow chart of the monitoring method of the present invention. DETAILED DESCRIPTION

[0027] See also Figure 1 The present invention provides a gas flux monitoring device based on Fourier infrared technology. The monitoring device includes an interferometer, a gas pool device and a detector. The gas pool device includes: a bracket 1; a gas pool 2, the gas pool 2 is installed on the bracket 1, and both ends of the gas pool 2 are provided with mounting cavities 201; a reflector assembly 3, two reflector assemblies 3 are respectively rotated and arranged in the mounting cavities 201 at both ends of the gas pool 2, and at least one side of the reflector assembly 3 is provided with a reflector 301; and a cleaning assembly 4, the cleaning assembly 4 is installed on the bracket 1, and the cleaning assembly 4 is inserted in the mounting cavity 201 and is located on one side of the reflector assembly 3; when the reflector 301 to be cleaned is rotated to the mounting cavity 201 corresponding to the cleaning assembly 4, the gas to be detected in the gas pool 2 that penetrates into the mounting cavity 201 is discharged back to the gas pool 2, and the surface of the reflector 301 placed in the mounting cavity 201 is cleaned, and after the cleaning, the mounting cavity 201 is vacuumed, and then the reflector 301 is returned to the gas pool 2.

[0028] It is not difficult to find from the above content that when using Fourier infrared technology to monitor gas flux, the light source emits infrared light, which is reflected to the interferometer through the reflector. In the interferometer, the beam splitter divides the infrared light into two beams, one reaching the moving mirror and the other reaching the fixed mirror. The moving mirror moves at a certain speed, so that the infrared light passing through the moving mirror and the infrared light passing through the fixed mirror produce a fixed optical path difference. The two infrared light beams with a certain optical path difference meet at the beam splitter to form interference light. The interference light comes out of the interferometer and passes through the aperture to adjust the light flux, and then passes through the collimator to collimate the light path, and then passes through the gas pool device to interact with the gas to be detected, and then feeds back to the detector. The detector sends the obtained interference light signal to the computer for Fourier transform processing, restores the interference pattern to a spectrum, and then further calculates the gas flux entering the gas pool device based on the spectrum.

[0029] Specifically, in the gas pool device, the infrared light after passing through the aperture and the collimator enters the gas pool 2 installed on the bracket 1. In the gas pool 2, the infrared light will be reflected back and forth by the reflectors 301 on the reflector assembly 3 at both ends of the gas pool 2 to increase the optical path. Since the reflector 301 is exposed to the gas pool 2 for a long time, it will be contaminated by the gas to be detected, thereby affecting the reflection effect of the infrared light passing through the reflector 301, so that the infrared light will have a large loss of light energy when it is reflected by the reflector 301. Therefore, the present invention can realize the rotation of the reflector 301 from the gas pool 2 to the side of the installation cavity 201 and corresponding to the cleaning assembly 4 through the reflector 301 installed on at least one side of the reflector assembly 3. The cleaning component 4 will further push the leaked gas to be detected in the gas pool 2 in the installation cavity 201 between the cleaning component 4 and the reflector 301 back into the gas pool 2, and then the cleaning component 4 will spray the surface of the reflector 301 in the installation cavity 201 with, for example, anhydrous ethanol, and then dry the reflector 301 after spraying to ensure that the reflector 301 is in a clean state. Next, the cleaning component 4 will empty the installation cavity 201 so that the installation cavity 201 is in a vacuum sealed state, and then the reflector component 3 will flip back to its original position so that the clean reflector 301 increases the optical path for infrared light reflection. Through the above method, the reflector 301 can be automatically cleaned without disassembling the gas pool device to reduce the energy loss of infrared light when passing through the reflector 301. Moreover, before and after the reflector assembly 3 is flipped, the installation cavity 201 is emptied by the cleaning assembly 4, which can avoid the discharge of the gas to be detected in the gas pool 2, and also avoid the outside gas from entering the gas pool 2 and polluting the gas to be detected in the gas pool 2.

[0030] It is worth noting that the reflector 301 can be two mirrors respectively arranged on both sides of the reflector assembly 3. Thus, when one of the reflectors 301 is in use, the other reflector 301 can be switched to the installation cavity 2 for cleaning, thereby ensuring that the cleaning work and the infrared light reflection work are respectively performed by the two reflectors 301 at the same time, so as to improve the working efficiency of the monitoring device.

[0031] like Figures 1 to 3 As shown, the gas pool 2 includes: a pool body 21, with a light inlet 211, a light outlet 212, an air inlet 213 and an air outlet 214 at both ends of the pool body 21, and the light inlet 211 and the light outlet 212 are respectively arranged at the ends of the gas pool 2 outside the installation cavity 201.

[0032] In one embodiment of the present invention, in the gas pool 2, the infrared light processed by the aperture and the collimator can enter the pool body 21 through the light inlet 211. In the pool body 21, the infrared light is reflected back and forth by the reflectors 301 on the reflector assembly 3 on both sides of the pool body 21, thereby increasing the optical path of the infrared light. In the pool body 21, the gas to be detected can also be introduced through the air inlet 213, and the gas to be detected can be discharged through the air outlet 214.

[0033] In this embodiment, the reflector 301 may include two types, namely, a primary reflector and a secondary reflector. The primary reflector and the secondary reflector are respectively mounted on two reflector assemblies 3 at both ends of the cell body 21, wherein the primary reflector is mounted on both sides of one reflector assembly 3, and the secondary reflector is mounted on both sides of the other reflector assembly 3, and the secondary reflectors are mounted on each side of the reflector assembly 3 on which the secondary reflectors are mounted, and two secondary reflectors are arranged in parallel.

[0034] Furthermore, the reflector assembly 3 includes: a rotating seat 31, a ball groove 202 is provided in the installation cavity 201, the rotating seat 31 is rotatably arranged in the ball groove 202, and the contact surface between the rotating seat 31 and the ball groove 202 is a spherical surface; and a driving motor 32, the driving motor 32 is installed on the outside of the gas pool 2, and the power output end of the driving motor 32 is connected to the rotating seat 31 to drive the rotating seat 31 to flip back and forth; wherein, the reflectors 301 are respectively arranged on both sides of the rotating seat 31.

[0035] In this embodiment, the rotation motor 32 may be a servo motor. The rotation motor 32 may drive the rotating seat 31 to rotate in the ball groove 202 in the installation cavity 201, and the outer wall of the rotating seat 31 and the inner wall of the ball groove 202 are always sealed. When the rotating seat 31 rotates to make the reflector 301 reach the set reflection position, the rotating seat 31 and the ball groove 202 may be kept in a relatively sealed state, thereby avoiding the mutual communication between the installation cavity 201 and the gas pool 2.

[0036] like Figures 1 to 5As shown, the cleaning component 4 includes: an exhaust component 41, which is installed on the bracket 1, and the power output end of the exhaust component 41 is inserted in the installation cavity 201 to exhaust the inside of the installation cavity 201 before the reflector component 3 flips back and forth to switch the reflector 301; and a flushing and drying component 42, which is inserted on the side of the gas pool 2, and the power output end of the flushing and drying component 42 is located in the installation cavity 201 between the exhaust component 41 and the reflector component 3, so as to flush the surface of the reflector 301 corresponding to the return switch with anhydrous ethanol, and blow it dry after flushing.

[0037] In one embodiment of the present invention, when the cleaning component 4 processes the reflector 301, the exhaust component 41 can be used to exhaust the installation cavity 201 between the reflector 301 and the cleaning component 4 after the reflector component 3 is flipped back and forth. Specifically, after the reflector 301 is flipped out, the gas that has seeped out of the gas pool 2 into the installation cavity 201 can be discharged back into the gas pool 2, and the gas in the installation cavity 201 can be discharged out after the reflector 301 is rinsed and dried with anhydrous ethanol by the rinse and dry component 42. And after the exhaust is completed, when the reflector 301 and the reflector component 3 are flipped back to the original position again, the exhaust component 41 pushes the gas to be detected that has seeped into the installation cavity 201 into the gas pool 2 again. In the above manner, it is possible to complete the cleaning of the reflectors 301 on both sides of the reflector component 3 under the premise that there is no leakage of the gas to be detected in the gas pool 2.

[0038] like Figures 2 to 5 and Figure 8 As shown, the exhaust component 41 includes: a piston 411, which is slidably inserted in the installation cavity 201, and the end surface of the installation cavity 201 is provided with a piston groove 4111 corresponding to the reflector assembly 3 and the reflector 301; a push motor 412, which is installed on the bracket 1, and the power output end of the push motor 412 is connected to the piston 411; and a ventilation component 413, an exhaust port 215 is opened on the gas pool 2, and the ventilation component 413 switches the exhaust gas in the installation cavity 201 to the outside and the gas pool 2 through the exhaust port 215.

[0039] In one embodiment of the present invention, when the exhaust component 41 exhausts the installation cavity 201, the push motor 412, which is preferably a push rod motor, drives the piston 411 to move back and forth in the installation cavity 201 toward the side of the reflector assembly 3, so that the gas to be detected in the installation cavity 201 between the piston 411 and the reflector assembly 3 enters the ventilation component 413 through the exhaust port 215, and the gas to be detected is discharged back to the gas pool 2 through the ventilation component 413. Alternatively, after the flushing and drying component 42 cleans the reflector 301, the gas in the installation cavity 201 is discharged from the installation cavity 201 through the ventilation component 413 to ensure that the installation cavity 201 is in a vacuum state.

[0040] like Fig.10 As shown, the ventilation component 413 includes: a one-way valve 4131, which is movably inserted in the exhaust port 215, the air inlet end of the one-way valve 4131 corresponds to the installation cavity 201, and the air outlet end of the one-way valve 4131 corresponds to the inner wall of the exhaust port 215; a switching valve 4132, the switching valve 4132 is installed on the side wall of the gas pool 2, and the air inlet end of the switching valve 4132 corresponds to the inner wall of the exhaust port 215, and the air inlet end of the switching valve 4132 is arranged corresponding to the air outlet end of the one-way valve 4131, the first air outlet end of the switching valve 4132 is interconnected with the inner cavity of the gas pool 2 through the circulation pipeline 4133, and the second air outlet end of the switching valve 4132 is connected to the outside; and a pushing motor 4134, the pushing motor 4134 is installed on the outer wall of the gas pool 2, and the power output end of the pushing motor 4134 is connected to the one-way valve 4131.

[0041] In one embodiment of the present invention, when the gas exchange component 413 is used to completely exhaust the gas in the installation cavity 201, when the gas to be exhausted is the gas to be detected, the switching valve 4132 is switched to be connected to the inner cavity of the body pool 2 through the circulation pipeline 4133, and after the piston 411 reaches the maximum stroke, the side wall of the piston 411 is completely in contact with the reflector assembly 3 and the reflector 301, and the gas to be detected in the installation cavity 201 is completely exhausted, and the remaining small part of the gas to be detected will be in the exhaust port 215 between the one-way valve 4131 and the piston 411. When the one-way valve 4131 is driven by the push motor 4134, which is preferably a push rod motor, to contact the piston 411 along the exhaust port 215, the gas to be detected in the exhaust port 215 is completely discharged to the inlet end of the switching valve 4132 through the one-way valve 4131, and discharged to the circulation pipeline 4133 through the first outlet end of the switching valve 4132, and further discharged into the gas pool 2.

[0042] like Figures 5 to 7As shown, the flushing and drying component 42 includes: a sleeve 421, two sleeves 421 are respectively installed on the upper and lower sides of one end of the gas pool 2, and are connected to the installation cavity 201; a first plug rod 422, the first plug rod 422 is slidably inserted in one sleeve 421, and a plurality of nozzles 423 are provided on the surface of the first plug rod 422 to spray anhydrous ethanol to the reflector 301; a second plug rod 424, the second plug rod 424 is movably inserted in another sleeve 421; a first push motor 425, the first push motor 425 is installed on the bracket 1, and the power output end of the first push motor 425 is connected to the first plug rod 422; and a second push motor 426, the second push motor 426 is installed on the bracket 1, and the power output end of the second push motor 426 is connected to the second plug rod 424.

[0043] In one embodiment of the present invention, when the washing and drying component 42 sprays and dries the reflector 301, the first push motor 425, which is preferably a push rod motor, pushes the first plug rod 422 along the sleeve 421 into the installation cavity 201, and the second push motor 426, which is preferably a push rod motor, pushes the second plug rod 424 along the other sleeve 421 into the installation cavity 201. Thus, the nozzle 423 on the first plug rod 422 sprays anhydrous ethanol to wash the surface of the reflector 301, and during the washing process, the first push motor 425 can move the first plug rod 422 back and forth to ensure that the surface of the reflector 301 is fully sprayed. After the spraying is completed, the drying process is performed. After the drying process, the first plug rod 422 and the second plug rod 424 are returned to their original positions.

[0044] Furthermore, an air inlet pipeline 427 is inserted on the first plug rod 422, and one end of the air inlet pipeline 427 is connected to the side wall of the first plug rod 422; an air outlet pipeline 428 is inserted on the second plug rod 424, and one end of the air outlet pipeline 428 is connected to the side wall of the second plug rod 424; wherein, dry gas is introduced into the air inlet pipeline 427, enters the installation cavity 201 through the side wall of the first plug rod 422, and is discharged from the corresponding air outlet pipeline 428 on the second plug rod 424.

[0045] In this embodiment, a dry gas such as an inert gas can be introduced into the installation cavity 201 through the air inlet line 427 from the first plug rod 422, and discharged through the air outlet line 428 on the second plug rod 424, forming convection in the installation cavity 201, thereby carrying the anhydrous ethanol on the reflector 301 and the reflector assembly 3 out of the installation cavity 201, so as to achieve a drying process on the surface of the reflector 301 and the reflector assembly 3.

[0046] Furthermore, the end surface of the first plug rod 422 corresponds to the inner side wall of the installation cavity 201, so that when the first plug rod 422 withdraws from the installation cavity 201, the end surface of the first plug rod 422 forms a blockage against the inner side wall of the installation cavity 201; the end surface of the second plug rod 424 corresponds to the inner side wall of the installation cavity 201, so that when the second plug rod 424 withdraws from the installation cavity 201, the end surface of the second plug rod 424 forms a blockage against the inner side wall of the installation cavity 201.

[0047] In this embodiment, after the first rod 422 and the second rod 424 have completed the spray cleaning and drying treatments, in order to ensure the sealing of the installation cavity 201, the first rod 422 and the second rod 424 return to their original positions in the sleeve 421, and at the same time, the end surface of the first rod 422 corresponds to the inner surface shape of the installation cavity 201, and the end surface of the second rod 424 corresponds to the inner surface shape of the installation cavity 201, so as to achieve the sealing of the two sleeves 421 by the first rod 422 and the second rod 424, and also avoid gas residue at the ends of the first rod 422 and the second rod 424 when the piston 411 moves, thereby achieving complete exhaustion of the gas in the installation cavity 201.

[0048] like Fig.11 As shown, the present invention also provides a monitoring method for the aforementioned gas flux monitoring device based on Fourier infrared technology, comprising the following steps: Step S10: obtaining cleaning signals for the reflector assemblies 3 at both ends of the gas pool 2, and controlling the reflector 301 on the reflector assembly 3 at one side of the gas pool 2 to flip to the corresponding side of the cleaning assembly 4; Step S20: Control the cleaning component 4 to push and discharge the gas to be detected in the installation cavity 201 between the cleaning component 4 and the turned-over reflector component 3 into the gas pool 2; Step S30: after the gas to be detected is exhausted, the cleaning component 4 is controlled to spray the surface of the turned-over reflector component 3 with anhydrous ethanol in the installation cavity 201; Step S40: after the spray cleaning is completed, the cleaning component 4 is controlled to blow and dry the turned-over reflector component 3 inside the mounting cavity 201; Step S50 : after the air blowing and drying is completed, the cleaning component 4 is controlled to exhaust the gas in the installation cavity 201 , and then the turned-over reflector component 3 is turned over and returned to the gas pool 2 .

[0049] In summary, the present invention discloses a gas flux monitoring device and method based on Fourier infrared technology. Through the cooperation between the reflector assembly 3 and the gas pool 2, the reflector 301 can be switched back and forth between the gas pool 2 and the installation cavity 201 on one side of the cleaning assembly 4 through the reflector assembly 3, so that after the switching, the reflector 301 can be sealed and automatically cleaned to reduce the energy loss of infrared light when passing through the reflector 301. In addition, the gas can be emptied after the reflector assembly 3 is switched, which can avoid the external discharge of the gas to be detected in the gas pool 2, and also avoid the external gas from entering the gas pool 2 to pollute the gas to be detected in the gas pool 2. Therefore, the present invention effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0050] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A gas flux monitoring device based on Fourier infrared technology, characterized in that: The monitoring device comprises an interferometer, a gas pool device and a detector, and the gas pool device comprises: Bracket (1); A gas pool (2), the gas pool (2) being mounted on the bracket (1), and both ends of the gas pool (2) being provided with mounting cavities (201); A reflector assembly (3), wherein two reflector assemblies (3) are rotatably disposed in the mounting cavities (201) at two ends of the gas pool (2), and a reflector (301) is disposed on at least one side of the reflector assembly (3); and a cleaning component (4), the cleaning component (4) being mounted on the bracket (1), and the cleaning component (4) being inserted into the mounting cavity (201) and located on one side of the reflector component (3); When the reflector (301) to be cleaned is rotated into the installation cavity (201) corresponding to the cleaning component (4), the gas to be detected in the gas pool (2) that has penetrated into the installation cavity (201) is discharged back into the gas pool (2), and the surface of the reflector (301) placed in the installation cavity (201) is cleaned. After the cleaning process, the installation cavity (201) is vacuumed, and then the reflector (301) is returned to the gas pool (2).

2. The gas flux monitoring device based on Fourier infrared technology according to claim 1, characterized in that: The gas pool (2) comprises: A pool body (21), wherein two ends of the pool body (21) are respectively provided with a light inlet (211), a light outlet (212), an air inlet (213) and an air outlet (214), and the light inlet (211) and the light outlet (212) are respectively provided at the end of the gas pool (2) outside the installation cavity (201).

3. The gas flux monitoring device based on Fourier infrared technology according to claim 1, characterized in that: The reflector assembly (3) comprises: A rotating seat (31), wherein a ball groove (202) is provided in the mounting cavity (201), the rotating seat (31) is rotatably arranged in the ball groove (202), and the contact surface between the rotating seat (31) and the ball groove (202) is a spherical surface; and A rotating motor (32), the rotating motor (32) being mounted outside the gas pool (2), and a power output end of the rotating motor (32) being connected to the rotating seat (31) to drive the rotating seat (31) to flip back and forth; Wherein, the reflectors (301) are respectively arranged on both sides of the rotating seat (31).

4. The gas flux monitoring device based on Fourier infrared technology according to claim 1, characterized in that: The cleaning component (4) comprises: an exhaust assembly (41), the exhaust assembly (41) being mounted on the bracket (1), the power output end of the exhaust assembly (41) being inserted into the mounting cavity (201) so as to exhaust air in the mounting cavity (201) before the reflector assembly (3) flips back and forth to switch the reflector (301); and A flushing and drying component (42), the flushing and drying component (42) is inserted into the side of the gas pool (2), and the power output end of the flushing and drying component (42) is located in the installation cavity (201) between the exhaust component (41) and the reflector component (3), so as to flush the surface of the reflector (301) corresponding to the return switch with anhydrous ethanol, and blow air to dry it after flushing.

5. The gas flux monitoring device based on Fourier infrared technology according to claim 4 is characterized in that: The exhaust assembly (41) comprises: A piston (411), the piston (411) being slidably inserted in the installation cavity (201), and an end surface of the installation cavity (201) being provided with a piston groove (4111) corresponding to the reflector assembly (3) and the reflector (301); A pushing motor (412), the pushing motor (412) being mounted on the bracket (1), and a power output end of the pushing motor (412) being connected to the piston (411); and A ventilation component (413) is provided on the gas pool (2) with an exhaust port (215), and the ventilation component (413) switches the exhaust gas in the installation cavity (201) to the outside and to the gas pool (2) through the exhaust port (215).

6. The gas flux monitoring device based on Fourier infrared technology according to claim 5 is characterized in that: The ventilation component (413) comprises: a one-way valve (4131), the one-way valve (4131) being movably inserted in the exhaust port (215), the air inlet end of the one-way valve (4131) corresponding to the installation cavity (201), and the air outlet end of the one-way valve (4131) corresponding to the inner side wall of the exhaust port (215); a switching valve (4132), the switching valve (4132) being mounted on a side wall of the gas pool (2), and the air inlet end of the switching valve (4132) corresponding to the inner side wall of the exhaust port (215), and the air inlet end of the switching valve (4132) corresponding to the air outlet end of the one-way valve (4131), the first air outlet end of the switching valve (4132) being in communication with the inner cavity of the gas pool (2) via a circulation pipeline (4133), and the second air outlet end of the switching valve (4132) being in communication with the outside; and A pushing motor (4134), wherein the pushing motor (4134) is installed on the outer wall of the gas pool (2), and a power output end of the pushing motor (4134) is connected to the one-way valve (4131).

7. The gas flux monitoring device based on Fourier infrared technology according to claim 4 is characterized in that: The rinsing and drying assembly (42) comprises: Sleeves (421), two sleeves (421) are respectively installed on upper and lower sides of one end of the gas pool (2), and are connected to the installation cavity (201); A first insertion rod (422), the first insertion rod (422) being slidably inserted in one of the sleeves (421), and a plurality of spray heads (423) being provided on the surface of the first insertion rod (422) for spraying anhydrous ethanol onto the reflector (301); A second insertion rod (424), the second insertion rod (424) being movably inserted in the other sleeve (421); a first push motor (425), the first push motor (425) being mounted on the bracket (1), the power output end of the first push motor (425) being connected to the first insertion rod (422); and A second push motor (426), wherein the second push motor (426) is mounted on the bracket (1), and a power output end of the second push motor (426) is connected to the second insertion rod (424).

8. The gas flux monitoring device based on Fourier infrared technology according to claim 7, characterized in that: An air intake pipeline (427) is inserted into the first insertion rod (422), and one end of the air intake pipeline (427) is connected to the side wall of the first insertion rod (422); An air outlet pipeline (428) is inserted into the second insertion rod (424), and one end of the air outlet pipeline (428) is connected to the side wall of the second insertion rod (424); The dry gas is introduced into the air inlet pipeline (427), enters the installation cavity (201) through the side wall of the first insertion rod (422), and is discharged from the corresponding air outlet pipeline (428) on the second insertion rod (424).

9. The gas flux monitoring device based on Fourier infrared technology according to claim 7, characterized in that: The end surface of the first insertion rod (422) corresponds to the inner side wall of the installation cavity (201), so that when the first insertion rod (422) withdraws from the installation cavity (201), the end surface of the first insertion rod (422) forms a blockage on the inner side wall of the installation cavity (201); the end surface of the second insertion rod (424) corresponds to the inner side wall of the installation cavity (201), so that when the second insertion rod (424) withdraws from the installation cavity (201), the end surface of the second insertion rod (424) forms a blockage on the inner side wall of the installation cavity (201).

10. A monitoring method for a gas flux monitoring device based on Fourier infrared technology according to any one of claims 1 to 9, characterized in that: The steps include: Acquiring cleaning signals for the reflector assemblies (3) at both ends of the gas pool (2), and controlling the reflector (301) on the reflector assembly (3) located on one side of the gas pool (2) to flip to the corresponding side of the cleaning assembly (4); Controlling the cleaning component (4) to push and discharge the gas to be detected in the installation cavity (201) between the cleaning component (4) and the turned-over reflector component (3) into the gas pool (2); After the gas to be detected is exhausted, controlling the cleaning component (4) to spray clean the surface of the turned-over reflector component (3) with anhydrous ethanol in the installation cavity (201); After the spray cleaning is completed, controlling the cleaning component (4) to blow air and dry the turned-over reflector component (3) inside the mounting cavity (201); After the air drying is completed, the cleaning component (4) is controlled to exhaust the gas in the installation cavity (201), and then the turned-over reflector component (3) is turned over and returned to the gas pool (2).

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