A multi-component gas measurement device
By combining multiple laser and optical components, efficient and low-cost detection of multi-component gases is achieved, solving the problems of large size and high cost of traditional devices, and making it suitable for space-constrained industrial sites.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YINIAN SENSOR TECH (SHENZHEN) CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-07-07
AI Technical Summary
Traditional single-wavelength laser gas detection devices can only measure one type of gas, requiring the deployment of multiple lasers and detectors, resulting in high system costs and large equipment size, making them difficult to install flexibly in space-constrained industrial sites.
Multiple first laser components emit beams of different wavelengths, which, combined with window adjustment components and reflection components, enable the measurement of multi-component gases. Through the cooperation of the transmissive and reflective film on the window adjustment component and the reflection component, a complete optical path is formed, avoiding the deployment of multiple lasers and detectors.
It enables flexible detection of multiple gases in space-constrained industrial environments, reduces system costs and equipment size, and offers advantages such as non-contact, high selectivity, and long lifespan, while avoiding cross-interference and high maintenance costs associated with traditional methods.
Smart Images
Figure CN224471533U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of gas measurement, and in particular to a multi-component gas measurement device. Background Technology
[0002] With the rapid development of industrial environmental monitoring, chemical process control, and atmospheric environmental detection, the demand for rapid and high-precision measurement of multi-component gases is becoming increasingly urgent. Traditional gas detection methods (such as electrochemical sensors and semiconductor sensors) often suffer from problems such as cross-interference, short lifespan, and high maintenance costs. In contrast, gas detection technology based on the principle of spectral absorption is gradually becoming the mainstream solution in the industry due to its advantages such as non-contact operation, high selectivity, and long lifespan.
[0003] The core principle of spectral absorption technology is the Beer-Lambert Law, which states that gas molecules exhibit characteristic absorption of light at specific wavelengths, and the gas concentration can be deduced by measuring the degree of light intensity attenuation. However, because different gas molecules have different absorption spectra (e.g., CO2 at 4.26 μm, CH4 at 3.3 μm, and NO at 5.3 μm), traditional single-wavelength laser gas detection devices (such as TDLAS, tunable diode laser absorption spectroscopy) can typically only measure one type of gas. To simultaneously detect multiple gases, multiple lasers and detectors must be deployed, significantly increasing system costs and resulting in bulky equipment that is difficult to install flexibly in space-constrained industrial environments (such as inside pipelines, flues, or reactors). Utility Model Content
[0004] The purpose of this application is to overcome the above-mentioned technical problems and provide a multi-component gas measuring device that can simultaneously detect multiple gases and can be flexibly installed in space-constrained industrial sites.
[0005] Firstly, the multi-component gas measuring device disclosed in this application adopts the following scheme:
[0006] A multi-component gas measuring device includes: a housing containing a gas to be measured; a laser mechanism including multiple first laser components arranged side-by-side within the housing for emitting light beams of different wavelengths that transmit through the gas to be measured; a detector disposed within the housing, with multiple detectors corresponding to the first laser components, for receiving reflected light beams; a window adjustment assembly disposed within the housing, with multiple window adjustment assemblies corresponding to the first laser components and the detector, wherein each window adjustment assembly has a first window with transmissive and reflective films on both sides suitable for different wavelength bands for reflecting and transmitting light beams of different wavelength bands emitted by the first laser components; and a reflective assembly connected to one side of the housing for reflecting the light beam transmitted through the window adjustment assembly, wherein the reflected light beam is further reflected and transmitted through the window adjustment assembly to the corresponding detector.
[0007] By adopting the above technical solution, multiple first laser components emit light beams of different wavelengths that penetrate the gas being measured. After reflection and transmission by the window adjustment component and the reflection component, the reflected light beams are received by the corresponding detectors, enabling the measurement of multi-component gases. Specifically, in this multi-component gas measuring device, the housing can contain the gas being measured, providing a stable spatial environment for measurement; multiple first laser components arranged in parallel can emit light beams of different wavelengths that penetrate the gas being measured; the window adjustment component is coated with first windows suitable for different wavelength bands of transmissivity and reflectivity, which can reflect and transmit light beams of different wavelengths, ensuring the effective transmission and processing of light beams of different wavelengths within the device; the reflection component can reflect the light beam transmitted by the window adjustment component, and then cause the reflected light beam to be reflected and transmitted again by the window adjustment component to the corresponding detector, forming a complete optical path, thereby achieving accurate measurement of multi-component gases.
[0008] Optionally, the first laser assembly includes: a first laser fixed within the housing relative to the window adjustment assembly; a drive unit fixed to the first laser; and a second window connected to the drive shaft of the drive unit, wherein the drive unit drives the second window to rotate, and the light beam emitted by the first laser is transmitted through the rotating second window to the window adjustment assembly.
[0009] By adopting the above technical solution, the first laser is fixed in the box relative to the window adjustment assembly, which can ensure the stability of the first laser position and enable the emitted beam to be accurately directed to the window adjustment assembly; the driving component is fixed on the first laser and can reliably provide rotational power for the second window; the driving component drives the second window to rotate, and the beam emitted by the first laser is projected through the rotating second window, which can destroy the stability of the relatively stable interference noise in the optical path by introducing a high-frequency random phase, so that the low-frequency noise is transformed into high-frequency noise, thereby facilitating the subsequent reduction of the influence of interference noise on the signal by setting an appropriate low-pass filter.
[0010] Optionally, the laser mechanism further includes a second laser located within the housing and positioned relative to the window adjustment assembly, for emitting a visible beam for adjustment.
[0011] By adopting the above technical solution, a second laser is set in the box relative to the window adjustment assembly and emits a visible beam for assembly and adjustment, which facilitates the assembly and adjustment of the multi-component gas measuring device.
[0012] Optionally, the window adjustment assembly includes: an adjustment frame, movably disposed within the housing, with a window receiving groove and multiple adjustment components on the adjustment frame; a first window slab, disposed in the window receiving groove, and the multiple adjustment components respectively passing through the side and side ends of the adjustment frame for abutting and adjusting the tilt angle of the first window slab.
[0013] By adopting the above technical solution, the adjustment frame is movably installed inside the housing, which can flexibly change the position of the window adjustment component inside the housing to adapt to different optical path requirements; the adjustment frame is provided with a window receiving slot, which can stably accommodate the first window and ensure the installation stability of the first window; the adjustment frame is provided with multiple adjustment components, which are respectively installed on the side and side end of the adjustment frame, and can precisely abut against and adjust the tilt angle of the first window, thereby accurately controlling the reflection and transmission direction of the beam and improving the adjustment accuracy and measurement accuracy of the beam of the multi-component gas measuring device.
[0014] Optionally, the adjustment frame is provided with an arc-shaped groove for screws to pass through, so as to adjust the rotation angle of the adjustment frame relative to the housing.
[0015] By adopting the above technical solution, an arc-shaped groove is set on the adjustment frame, and the rotation angle of the adjustment frame relative to the box can be adjusted by the screw moving through it. This allows for flexible adjustment of the position of the window adjustment component, optimizing the reflection and transmission effects of light beams of different wavelengths and improving the accuracy of multi-component gas measurement.
[0016] Optionally, the reflective assembly includes: a connecting pipe located outside the housing; a flange ring, one end of which is fitted onto the connecting pipe and the other end connected to the housing; an isolation window embedded in the flange ring for projecting a light beam; and a reflector disposed in the connecting pipe and located at the end of the isolation window away from the housing, the reflector having three mutually perpendicular reflective surfaces.
[0017] By adopting the above technical solution, a reflective assembly is formed by connecting pipes, flange rings, isolation windows, and reflectors. The connecting pipes are located outside the housing, the flange rings connect the connecting pipes and the housing, the isolation windows are embedded in the flange rings for transmitting light beams, and the reflectors are set in the connecting pipes. The three mutually perpendicular reflective surfaces can reflect the light beams transmitted through the window adjustment assembly and the isolation windows, so that the reflected light beams are strictly parallel to the incident light but in the opposite direction. The reflected light beams are then transmitted or reflected by the isolation windows and the window adjustment assembly to the corresponding detectors, thereby realizing the measurement of multi-component gases.
[0018] Optionally, there are three of each of the first laser and the detector, one of the second lasers, and five window adjustment components. Among the five window adjustment components, three are arranged in parallel for output beams, and two are arranged in parallel for return beams. They are spaced apart at the top of the three output beam window adjustment components.
[0019] By adopting the above technical solution, three first lasers are set to emit beams of different wavelengths. The beams are then emitted to the reflector through three window adjustment components and an isolation window, and then reflected back to the three detectors through two window adjustment components. This enables the effective transmission and reception of multi-wavelength beams, improving the accuracy and efficiency of multi-component gas measurement. A second laser is set to emit a visible beam for assembly and adjustment, which facilitates the assembly and adjustment of the device.
[0020] Optionally, the retroreflective assembly further includes: a first sealing ring, embedded in the flange ring, wherein the isolation window abuts against the first sealing ring; and a second sealing ring, embedded between the flange ring and the housing.
[0021] By adopting the above technical solution, a first sealing ring is set in the flange ring so that the isolation window plate abuts against the first sealing ring, and a second sealing ring is set between the flange ring and the housing, the sealing performance of the device can be improved, the gas to be measured can be prevented from leaking, and the measurement accuracy can be guaranteed.
[0022] Optionally, it also includes a display element disposed on the housing for displaying equipment status and gas concentration information.
[0023] By adopting the above technical solution, the operating status of the multi-component gas measuring device and the concentration of the gas being measured can be understood in real time and intuitively, which makes it easier for operators to obtain relevant information about the equipment and gas, and improves the convenience and accuracy of operation.
[0024] Optionally, the second window is a wedge-shaped window or a frosted glass pane.
[0025] By adopting the above technical solution, the second window can be a wedge-shaped window or a frosted glass plate, which can realize the effect of the laser beam being transmitted through the second window and then transmitted to the window adjustment component, thereby realizing the device to measure multi-component gases.
[0026] In summary, this application includes at least one of the following beneficial technical effects:
[0027] 1. Multiple first laser components emit beams of different wavelengths that penetrate the gas being tested, enabling the simultaneous detection of multiple gases. This avoids the problem that traditional single-wavelength laser gas detection devices require the deployment of multiple lasers and detectors to detect multiple gases, thus reducing system costs.
[0028] 2. The device has a compact structure, which solves the problem that traditional testing devices are bulky and difficult to install flexibly in space-constrained industrial sites;
[0029] 3. Based on the principle of spectral absorption, it has the advantages of non-contact, high selectivity and long life, avoiding the problems of cross-interference, short life and high maintenance cost of traditional gas detection methods. Attached Figure Description
[0030] Figure 1 This is a three-dimensional structural schematic diagram of a multi-component gas measuring device disclosed in an embodiment of this application;
[0031] Figure 2 for Figure 1 A partial structural schematic diagram of a multi-component gas measuring device is disclosed.
[0032] Figure 3 for Figure 1 A partial structural schematic diagram of a multi-component gas measuring device is disclosed.
[0033] Figure 4 for Figure 1 A schematic diagram of the optical path of a multi-component gas measuring device during gas measurement;
[0034] Figure 5 for Figure 1 A schematic diagram of the regulating frame in a disclosed multi-component gas measuring device.
[0035] Explanation of reference numerals in the attached figures:
[0036] 10. Housing; 20. Laser mechanism; 21. First laser assembly; 211. First laser; 212. Driver; 213. Second window; 22. Second laser; 30. Detector; 40. Window adjustment assembly; 41. First window; 42. Adjustment frame; 421. Window receiving slot; 422. Adjustment component; 423. Arc groove; 50. Reflection assembly; 51. Connecting pipe; 52. Flange ring; 53. Isolation window; 54. Reflector; 541. Reflecting surface; 60. Display component. Detailed Implementation
[0037] The terminology used in the following embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. As used in the specification and appended claims of this application, the singular expressions “a,” “an,” “the,” “the,” and “this” are intended to include the plural expressions as well, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in this application refers to and includes any or all possible combinations of one or more of the listed items.
[0038] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature, and in the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.
[0039] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.
[0040] See Figure 1 , Figure 2 and Figure 3 The first embodiment of this application discloses a multi-component gas measuring device, which includes: a housing 10, a laser mechanism 20, a detector 30, a window adjustment assembly 40, and a reflection assembly 50.
[0041] The chamber 10 contains the gas to be measured. The laser mechanism 20 includes multiple first laser components 21, arranged side-by-side within the chamber 10, emitting beams of different wavelengths that transmit through the gas to be measured. Multiple detectors 30 are configured within the chamber 10 corresponding to the multiple first laser components 21, used to receive the reflected beams. Multiple window adjustment components 40 are configured corresponding to the first laser components 21 and detectors 30, wherein the first windows 41 are coated with transmissive and reflective films (i.e., optical antireflective films and reflective films) suitable for different wavelengths on opposite sides, used to reflect and transmit beams of different wavelengths.
[0042] The reflector 50 is connected to one side of the housing 10 to reflect the light beam transmitted through the window adjustment assembly 40. The reflected light beam is then reflected again by the window adjustment assembly 40 and transmitted to the corresponding detector 30. In this way, by setting multiple first laser assemblies 21 to emit light beams of different wavelengths, multiple gases can be targeted. Furthermore, the cooperation between the window adjustment assembly 40 and the reflector 50 enables a single device to measure multiple components of gas, avoiding the deployment of multiple lasers and detectors 30. This achieves the effect of simultaneously detecting multiple gases, reducing system costs and equipment size, and facilitating installation in space-constrained industrial environments.
[0043] For details, see Figure 3 The first laser component 21 includes a first laser 211, a driver 212, and a second window 213. The first laser 211 is fixed in the housing 10 relative to the window adjustment component 40. The first laser 211 is a laser emitting structure that can emit a specific wavelength beam. The brand, model, and power are not limited here, as long as they can meet the requirement of emitting the corresponding wavelength beam.
[0044] The driving component 212 is a high-speed motor fixed to the first laser 211, and has a drive shaft for connecting the second window 213. The second window 213 can be a wedge-shaped window or a frosted glass plate. During operation, the driving component 212 drives the second window 213 to rotate at high speed through the drive shaft. The beam emitted by the first laser 211 is transmitted to the window adjustment assembly 40 through the high-speed rotating second window 213. During this process, the rotation frequency of the second window 213 driven by the driving component 212 is greater than the signal integration frequency of the detector 30. This achieves the goal of disrupting the stability of the relatively stable interference noise in the optical path by introducing a high-frequency random phase, thus converting low-frequency noise into high-frequency noise. Subsequently, the influence of interference noise on the signal can be reduced by setting an appropriate low-pass filter.
[0045] For details, see Figure 3 and Figure 4 The laser mechanism 20 also includes a second laser 22, located inside the housing 10 and positioned relative to the window adjustment assembly 40, for emitting a visible beam for installation and adjustment. The second laser 22 has a similar structure to the first laser 211, but emits a visible beam, which facilitates the observation and adjustment of the optical path during device installation and debugging. Of course, it can also replace other light source devices that can emit visible beams.
[0046] The second laser 22 only needs to be turned on during installation and adjustment. Before being installed on the device, its collimation and coaxiality have been adjusted. When the second laser 22 is turned on during installation and adjustment, the optical path can be observed and recorded by the naked eye to adjust the position of the window adjustment component 40. After adjustment, the second laser 22 is turned off, and the first laser 211 can be turned on in sequence to start working.
[0047] For details, see Figure 5 The window adjustment assembly 40 includes a first window 41 and an adjustment frame 42. The adjustment frame 42 is movably mounted within the housing 10. It has a window receiving slot 421 and multiple adjustment components 422. The adjustment frame 42 is movably fixed within the housing 10. The window receiving slot 421 is used to hold the first window 41. The adjustment frame 42 also has multiple mounting positions for the adjustment components 422, which are screws. The mounting positions are on the side and side end of the adjustment frame 42. The pitch angle of the window 41 can be adjusted by screwing the adjustment components 422 that pass through the side of the adjustment frame 42. After adjustment, the first window 41 is fixed by tightening the adjustment components 422 on the side end of the adjustment frame 42, thus achieving the adjustment and fixation of the angle of the first window 41. In this way, through the cooperation of the adjustment frame 42 and the adjustment components 422, the tilt angle of the second window 213 can be precisely adjusted, thereby controlling the reflection and transmission path of the light beam to meet the needs of different gas measurements.
[0048] The adjustment frame 42 is provided with an arc-shaped groove 423 for a screw to pass through, so that the screw can adjust the tilt angle, or rotation angle, of the adjustment frame 42 relative to the housing 10. The arc-shaped groove 423 is an arc-shaped through groove. After the screw passes through the arc-shaped groove 423, it can be fixed to the housing 10. By loosening the screw and rotating the adjustment frame 42, the rotation angle of the adjustment frame 42 relative to the housing 10 can be changed, and the propagation direction of the light beam can be further adjusted.
[0049] For details, see Figure 2 The reflective assembly 50 includes a connecting pipe 51, a flange ring 52, an isolation window 53, and a reflector 54. The connecting pipe 51 is located on the outside of the housing 10, with a cylindrical pipe on the inside. One end of the flange ring 52 is fitted onto the connecting pipe 51, and the other end is connected to the housing 10, serving as a connection and seal. It has a ring-shaped structure with connection holes. The isolation window 53 is a transparent optical window embedded in the flange ring 52 for transmitting light beams. The isolation window 53 divides the device into the inside and outside of the housing 10, thus achieving isolation and sealing.
[0050] The reflector 54 is disposed in the connecting pipe 51 and located at the end of the isolation window 53 away from the housing 10. It is used to reflect the light beam transmitted through the window adjustment assembly 40. The reflector 54 is a hollow angular cubic retroreflector with three reflecting surfaces 541, which are perpendicular to each other. According to the principle of optical reflection, no matter what angle the incident light enters from, after continuous reflection from the three surfaces, the outgoing light is strictly parallel to the incident light but in the opposite direction. The combination of the connecting pipe 51, flange ring 52, isolation window 53, and reflector 54 enables the light beam to be effectively reflected and propagated within the device, completing the measurement process of multi-component gas.
[0051] In addition, the reflective assembly 50 also includes a first sealing ring and a second sealing ring (not shown in the figure). The first sealing ring is embedded in the flange ring 52, and the isolation window 53 abuts against the first sealing ring (i.e., fixed by a pressure ring method). Its function is to prevent gas leakage and the ingress of external dust, etc. It is an annular ring made of elastic material such as rubber. Of course, in another embodiment, the isolation window 53 can be fixed in the flange ring 52 by adhesive bonding, which also serves as a seal. The second sealing ring is embedded between the flange ring 52 and the housing 10, and also serves as a seal to prevent external moisture from entering the housing 10 and interfering with the equipment.
[0052] For details, see Figure 3 and Figure 4 There are three first lasers 211 and three detectors 30, one second laser 22, and a total of five window adjustment assemblies 40. Three of these window adjustment assemblies are arranged side-by-side to emit the beams from the three first lasers 211, and two are arranged side-by-side to reflect the beams reflected by the reflector 54. The two reflector beam window adjustment assemblies are spaced apart above the three emitted beam window adjustment assemblies 40, as shown in the specific positions below. Figure 3 As shown in the image.
[0053] Specifically, the beams emitted by the three first lasers 211 are transmitted through the window adjustment components 40 and isolation windows 53 of the three outgoing beams to the reflector 54. The beams are then reflected by the reflector 54, passed through the isolation windows 53, and transmitted to the window adjustment components 40 of the two return beams for reflection and transmission to the three detectors 30. The window adjustment component 40 of the rightmost return beam transmits and reflects the beam to two detectors 30. This arrangement of quantity and layout is optimized according to the needs of multi-component gas measurement, enabling effective measurement of multiple gases. Different gases correspond to different wavelengths of light, and this layout allows for accurate detection of the concentration of different gases.
[0054] See Figure 4The diagram shows the optical path of the beams emitted by three lasers. For example, suppose the first laser 211, which emits three beams in parallel, emits tunable laser wavelengths A, B, and C, respectively, and the visible light laser (second laser 22) has a wavelength of D. The first window 41 of the window adjustment assembly 40 of the rightmost beam is coated with a transmission D band and a reflection C band. The first window 41 of the window adjustment assembly 40 of the middle beam is coated with a transmission C and D band and a reflection B band. The first window 41 of the window adjustment assembly 40 of the left beam is coated with a transmission B, C, and D band and a reflection A band. The first window 41 of the window adjustment assembly 40 for the reflected beam on the left is coated with a reflection band A and transmission bands B, C, and D. The first window 41 of the window adjustment assembly 40 for the reflected beam on the right is coated with a reflection band B and transmission bands C and D. Beams of different wavelengths emitted by the three first lasers 211 are transmitted through the first window 41, reflected by the second window 213 of the window adjustment assembly 40 for the reflected beam, and transmitted through the isolation window 53 to reach the emitter through the optical path. After being translated a certain distance by the emitter, they return along the original angle and are reflected and transmitted to the second window 213 of the window adjustment assembly 40 for the reflected beam to reach the detector 30. In this way, by using beams of different wavelengths emitted by the three first lasers 211, and in conjunction with the second windows 213 of the window adjustment assembly 40 coated with different transmission and reflection bands, the simultaneous measurement of the concentration of multiple components in a gas can be achieved.
[0055] Furthermore, the device also includes a display element 60, which is disposed on the outside of the housing 10, for displaying equipment status and gas concentration information, so that operators can easily understand the operating status and measurement results of the device in real time. The display element 60 is a display screen device, and its structure includes a display panel and control circuits, etc. The size and type of the display element 60 are not limited here, as long as it can realize the information display function.
[0056] The implementation principle of this embodiment is as follows: The multi-component gas measuring device emits beams of different wavelengths through multiple first laser components 21. Utilizing the transmissivity and reflectivity of the window adjustment component 40 and the reflection effect of the reflective component 50, the beams undergo multiple reflections and transmissions within the device before being received by the detector 30. Through data processing, the concentration of the multi-component gases is obtained. Compared to traditional single-wavelength laser gas detection devices, this device can simultaneously detect multiple gases without the need to deploy multiple sets of lasers and detectors 30, reducing system costs and equipment size. Furthermore, the beam path can be flexibly adjusted through structures such as the window adjustment component 40 and the arc-shaped groove 423, facilitating installation and use in space-constrained industrial environments. The display component 60 facilitates the operator's access to measurement information, improving the practicality and operability of the device.
[0057] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
[0058] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A multi-component gas measuring device, characterized in that, include: The chamber (10) contains the gas to be measured; The laser mechanism (20) includes multiple first laser components (21) arranged side by side inside the housing (10) for emitting beams of different wavelengths to transmit through the gas being measured; A detector (30) is disposed inside the housing (10), and multiple detectors are disposed corresponding to the first laser assembly (21) for receiving the reflected beam; A window adjustment assembly (40) is set inside the housing (10). Multiple such assemblies are set to correspond to the first laser assembly (21) and the detector (30). The first window (41) on each window adjustment assembly (40) is coated with a reflective film suitable for different wavelengths on both sides, which is used to reflect and transmit different wavelength beams emitted by the first laser assembly (21). A reflector assembly (50) is connected to one side of the housing (10) for reflecting the light beam transmitted through the window adjustment assembly (40), wherein the reflected light beam is then reflected and transmitted through the window adjustment assembly (40) to the corresponding detector (30).
2. The multi-component gas measuring device according to claim 1, characterized in that, The first laser component (21) includes: The first laser (211) is fixed inside the housing (10) relative to the window adjustment assembly (40); The driving component (212) is fixed to the first laser (211); The second window (213) is connected to the drive shaft of the drive member (212). The drive member (212) drives the second window (213) to rotate. The light beam emitted by the first laser (211) is transmitted through the rotating second window (213) to the window adjustment assembly (40).
3. The multi-component gas measuring device according to claim 2, characterized in that, The laser mechanism (20) also includes a second laser (22), located inside the housing (10) and positioned relative to the window adjustment assembly (40), for emitting a visible beam for adjustment.
4. The multi-component gas measuring device according to claim 1, characterized in that, The window adjustment assembly (40) includes: An adjustment frame (42) is movably installed inside the housing (10). A window slat receiving groove (421) and multiple adjustment components (422) are provided on the adjustment frame (42). The first window panel (41) is housed in the window panel receiving groove (421), and a plurality of the adjusting members (422) are respectively inserted through the side and side end of the adjusting frame (42) to abut and adjust the tilt angle of the first window panel (41).
5. The multi-component gas measuring device according to claim 4, characterized in that, The adjustment frame (42) is provided with an arc-shaped groove (423) for screws to pass through, so as to adjust the rotation angle of the adjustment frame (42) relative to the housing (10).
6. The multi-component gas measuring device according to claim 3, characterized in that, The reflective component (50) includes: The connecting pipe (51) is located outside the box (10); A flange ring (52) is fitted with the connecting pipe (51) at one end and connected to the box body (10) at the other end; An isolation window (53) is embedded in the flange ring (52) for projecting light beams; A reflector (54) is disposed in the connecting pipe (51) and located at the end of the isolation window (53) away from the housing (10). The reflector (54) has three mutually perpendicular reflective surfaces (541).
7. The multi-component gas measuring device according to claim 6, characterized in that, The first laser (211) and the detector (30) are each set to 3, the second laser (22) is set to 1, and the window adjustment assembly (40) is set to 5. Among the 5 window adjustment assemblies (40), 3 of the window adjustment assemblies (40) are arranged in parallel for output beams, and 2 of the window adjustment assemblies (40) are arranged in parallel for reflective beams. They are spaced apart at the upper end of the 3 output beam window adjustment assemblies (40).
8. The multi-component gas measuring device according to claim 6, characterized in that, The reflective component also includes: A first sealing ring is embedded in the flange ring (52), wherein the isolation window (53) abuts against the first sealing ring; The second sealing ring is embedded between the flange ring (52) and the housing (10).
9. The multi-component gas measuring device according to claim 5, characterized in that, Also includes: A display element (60) is disposed on the housing (10) for displaying equipment status and gas concentration information.
10. The multi-component gas measuring device according to claim 2, characterized in that, The second window (213) is a wedge-shaped window or a frosted glass sheet.