Spectrum detection equipment

Abstract

The present application discloses a spectrum detection device, including: a reaction device and a light source emitting device. The reaction device includes a reaction pool; the reaction pool and the first concave lens are respectively arranged on both sides of the first collimating lens, and the concave surface of the first concave lens is arranged toward the reaction pool, the dichroic mirror is arranged between the first concave lens and the first collimating lens, and the dichroic mirror is arranged on the output light path of the first concave lens; the ultraviolet light transmission component and the infrared light transmission component are respectively arranged on two different output light paths of the dichroic mirror, and the output light paths of the ultraviolet light transmission component and the infrared light transmission component are both through the first collimating lens; the reaction pool is located on the output light path of the first collimating lens; the ultraviolet light beam emitted by the ultraviolet light source and the infrared light beam emitted by the infrared light source are focused on the same point of the concave surface of the first concave lens. The spectrum detection device of the present application can improve the accuracy of the detection results of complex gas components.

Description

Technical Field

[0001] The present application relates to the technical field of spectrum detection, and in particular to a spectrum detection device. Background Art

[0002] The detection of gas by spectral detection equipment is mainly based on the absorption characteristics of gas molecules to specific wavelengths. When the spectrum of a specific wavelength passes through the molecules in the gas, part of the radiation will be absorbed by the molecules, and the rest will continue to propagate. By measuring the difference between the amount of absorbed radiation and the amount of transmitted radiation, the concentration and type of gas molecules can be determined. In complex gas components such as flue gas, the same band may be absorbed by multiple gas molecules at the same time. In this case, it is necessary to use multiple light sources to detect complex gas components. In traditional spectral detection equipment, when using multiple light sources to detect complex gas components, the consistency and spatial overlap of the output light path are prone to be insufficient, thereby affecting the accuracy of the detection results. Summary of the invention

[0003] In view of this, the purpose of the present application is to overcome the deficiencies in the prior art and to provide a spectral detection device that can improve the accuracy of detection results for complex gas components.

[0004] To achieve the above objectives, the technical solutions adopted in this application are as follows:

[0005] According to the spectral detection device of the embodiment of the present application, it includes: a reaction device, including a reaction pool; a light source emitting device, including a first concave lens, an infrared light source, an ultraviolet light source, a dichroic mirror, an ultraviolet light transmission component, an infrared light transmission component and a first collimating lens; the reaction pool and the first concave lens are respectively arranged on both sides of the first collimating lens, and the concave surface of the first concave lens is arranged toward the reaction pool, the dichroic mirror is arranged between the first concave lens and the first collimating lens, and the dichroic mirror is arranged on the output light path of the first concave lens; the ultraviolet light transmission component and the infrared light transmission component are both arranged between the dichroic mirror and the first collimating lens, and are respectively arranged on two different output light paths of the dichroic mirror, and the output light paths of the ultraviolet light transmission component and the infrared light transmission component are both through the first collimating lens; the reaction pool is located on the output light path of the first collimating lens; the ultraviolet light source and the infrared light source are symmetrically arranged on both sides of the first concave lens, and the ultraviolet light beam emitted by the ultraviolet light source and the infrared light beam emitted by the infrared light source are focused on the same point of the concave surface of the first concave lens.

[0006] The spectrum detection device of the present application has the following advantages:

[0007] In the spectral detection device of the present application, the output optical paths of the ultraviolet light transmission component and the infrared light transmission component both pass through the first collimating lens, and the reaction cell is located on the output optical path of the first collimating lens. Therefore, the ultraviolet light and the infrared light can enter the reaction cell through the first collimating lens respectively to detect the complex gas components in the reaction cell. In this process, since the light beam will be absorbed by the gas molecules in the reaction cell, the quality of the light will affect the accuracy of the detection of the absorbed light. Since the ultraviolet light source component and the infrared light source component are symmetrically arranged on both sides of the first concave lens, and the ultraviolet light beam emitted by the ultraviolet light source component and the infrared light beam emitted by the infrared light source component are focused on the same point on the concave surface of the first concave lens, the ultraviolet light beam emitted by the ultraviolet light source component and the infrared light beam emitted by the infrared light source component can be converged onto the same optical path through the first concave lens. In this way, the optical path deviation can be reduced and the entry can be enhanced. The consistency of the direction of the light beam and the uniformity of the light intensity in the reaction pool can be improved, and the phenomenon of light intensity weakening caused by reflection and refraction can be reduced. Since the dichroic mirror is arranged between the first concave lens and the first collimating lens, and the dichroic mirror is arranged on the output light path of the first concave lens, the ultraviolet light transmission component and the infrared light transmission component are both arranged between the dichroic mirror and the first collimating lens, and the ultraviolet light transmission component and the infrared light transmission component are respectively arranged on two different output light paths of the dichroic mirror, therefore, the ultraviolet light beam and the infrared light beam focused on the same light path can be split by the dichroic mirror, so as to facilitate the subsequent optimization of the light beam for a specific wavelength band, which is helpful for the detailed analysis of the light beam for a specific wavelength band. At the same time, the optimized light beam can be focused on the same light path again through the first collimating lens, so as to ensure the consistency of the direction of the light beam and the uniformity of the light intensity entering the reaction pool, so as to improve the accuracy of the detection results of complex gas components.

[0008] According to the spectral detection device of the embodiment of the present application, the dichroic mirror is provided with an infrared light output optical path, the infrared light transmission component includes a second collimating lens and a first transmission optical fiber, the second collimating lens is arranged between the dichroic mirror and the first collimating lens, and is arranged on the infrared light output optical path, the first transmission optical fiber is arranged between the first collimating lens and the second collimating lens, and is arranged on the output optical path of the second collimating lens, and the first collimating lens is arranged on the output optical path of the first transmission optical fiber.

[0009] According to the spectral detection device of the embodiment of the present application, the dichroic mirror is also provided with an ultraviolet light output optical path, and the ultraviolet light output optical path is arranged at an angle with the infrared light output optical path, and the ultraviolet light transmission component includes a first reflector and a second transmission optical fiber, the first reflector is arranged between the dichroic mirror and the first collimating lens and is arranged on the ultraviolet light output optical path, the second transmission optical fiber is arranged between the first collimating lens and the first reflector and is arranged on the output optical path of the first reflector, and the first collimating lens is arranged on the output optical path of the second transmission optical fiber.

[0010] According to the spectral detection device of an embodiment of the present application, the ultraviolet light transmission component also includes an adjustment grating, which is arranged between the first reflector and the second transmission optical fiber, and the adjustment grating is located on the output light path of the first reflector, and the second transmission optical fiber is located on the output light path of the adjustment grating.

[0011] According to the spectral detection device of the embodiment of the present application, the ultraviolet light transmission component also includes a first focusing component and a second focusing component, the first focusing component is arranged between the adjustment grating and the second transmission optical fiber, and the first focusing component is located on the output light path of the adjustment grating, the second focusing component is arranged between the first focusing component and the second transmission optical fiber, and the second focusing component is located on the output light path of the first focusing component, and the second transmission optical fiber is located on the output light path of the second focusing component.

[0012] According to the spectral detection equipment of the embodiment of the present application, the ultraviolet light source includes a plurality of light-emitting parts, and the plurality of light-emitting parts are arranged in an array, the ultraviolet light beams emitted by each of the light-emitting parts are focused on the same point of the concave surface of the first concave lens, and the ultraviolet light beams emitted by any two of the light-emitting parts are within different wavelength ranges.

[0013] According to the spectrum detection device of the embodiment of the present application, the reaction device further includes a first concave reflector, a second concave reflector, a third concave reflector, a plane reflector and a spectrum detection component, the first concave reflector, the second concave reflector, the third concave reflector and the plane reflector are all arranged in the reaction pool, and the spectrum detection component is arranged on the reaction pool;

[0014] The reaction pool is provided with an air inlet, and the first concave reflector, the third concave reflector and the plane reflector are located on one side of the air inlet, the second concave reflector and the spectrum detection component are located on the other side of the air inlet, and the plane reflector is located between the first concave reflector and the third concave reflector;

[0015] The first concave reflector is located on the output light path of the first collimating lens. The light beam reflected by the first concave reflector is reflected to the plane reflector via the second concave reflector, then reflected back to the second concave reflector via the plane reflector, then reflected to the third concave reflector via the second concave reflector, and then reflected to the spectrum detection element via the third concave reflector.

[0016] According to the spectrum detection device of the embodiment of the present application, the first concave reflecting mirror is located outside the focus of the second concave reflecting mirror.

[0017] According to the spectral detection device of an embodiment of the present application, the focus of the first concave reflecting mirror and the focus of the second concave reflecting mirror are arranged to overlap at the overlapping focus, and the reaction pool is provided with a plurality of air inlets arranged at intervals, and each of the air inlets is arranged close to the overlapping focus.

[0018] According to the spectrum detection device of the embodiment of the present application, the third concave reflecting mirror is located outside the focus of the first concave reflecting mirror. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 The structure diagram of the spectrum detection device in the present application is shown;

[0021] Figure 2 A schematic diagram showing the structure of the light source emitting device in the present application is shown;

[0022] Figure 3 The schematic diagram of the structure of the reaction device in the present application is shown.

[0023] Description of main component symbols:

[0024] 100-reaction device; 110-reaction pool; 111-air inlet; 120-first concave reflector; 130-second concave reflector; 140-third concave reflector; 150-plane reflector; 160-spectral detection element; 170-coincidence focus;

[0025] 200-light source emitting device; 210-first concave lens; 220-infrared light source component; 230-ultraviolet light source component; 240-two-way mirror; 241-infrared light output optical path; 242-ultraviolet light output optical path; 250-ultraviolet light transmission component; 251-first reflector; 252-second transmission optical fiber; 253-adjusting grating; 254-first focusing component; 255-second focusing component; 260-infrared light transmission component; 261-second collimating lens; 262-first transmission optical fiber; 270-first collimating lens. DETAILED DESCRIPTION

[0026] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0027] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] Reference Figures 1 to 3 As shown, the spectrum detection device involved in the embodiment of the present application includes: a reaction device 100 and a light source emitting device 200.

[0032] Specifically, the reaction device 100 includes a reaction pool 110; the light source emitting device 200 includes a first concave lens 210, an infrared light source component 220, an ultraviolet light source component 230, a dichroic mirror 240, an ultraviolet light transmission component 250, an infrared light transmission component 260 and a first collimating lens 270; the reaction pool 110 and the first concave lens 210 are respectively arranged on both sides of the first collimating lens 270, and the concave surface of the first concave lens 210 is arranged toward the reaction pool 110, the dichroic mirror 240 is arranged between the first concave lens 210 and the first collimating lens 270, and the dichroic mirror 240 is arranged on the output light path of the first concave lens 210; the ultraviolet light transmission component 250, the infrared light transmission component 260 and the first collimating lens 270; The component 250 and the infrared light transmission component 260 are both arranged between the dichroic mirror 240 and the first collimating lens 270, and are respectively arranged on two different output light paths of the dichroic mirror 240. The output light paths of the ultraviolet light transmission component 250 and the infrared light transmission component 260 both pass through the first collimating lens 270; the reaction pool 110 is located on the output light path of the first collimating lens 270; the ultraviolet light source component 230 and the infrared light source component 220 are symmetrically arranged on both sides of the first concave lens 210, and the ultraviolet light beam emitted by the ultraviolet light source component 230 and the infrared light beam emitted by the infrared light source component 220 are focused on the same point of the concave surface of the first concave lens 210.

[0033] In the spectral detection device of the present application, the output optical paths of the ultraviolet light transmission component 250 and the infrared light transmission component 260 are both through the first collimating lens 270, and the reaction pool 110 is located on the output optical path of the first collimating lens 270. Therefore, the ultraviolet light and the infrared light can enter the reaction pool 110 through the first collimating lens 270 respectively to detect the complex gas components in the reaction pool 110. In this process, since the light beam will be absorbed by the gas molecules in the reaction pool 110, the quality of the light will affect the absorption of the gas molecules. The accuracy of the light collection detection is improved because the ultraviolet light source component 230 and the infrared light source component 220 are symmetrically arranged on both sides of the first concave lens 210, and the ultraviolet light beam emitted by the ultraviolet light source component 230 and the infrared light beam emitted by the infrared light source component 220 are focused on the same point of the concave surface of the first concave lens 210. In this way, the ultraviolet light beam emitted by the ultraviolet light source component 230 and the infrared light beam emitted by the infrared light source component 220 can be converged on the same optical path through the first concave lens 210, so that the optical path deviation can be reduced and the detection accuracy can be increased. The consistency of the direction and uniformity of the light intensity of the light beam entering the reaction pool 110 are enhanced, and the phenomenon of light intensity weakening caused by reflection and refraction is reduced. Since the dichroic mirror 240 is arranged between the first concave lens 210 and the first collimating lens 270, and the dichroic mirror 240 is arranged on the output light path of the first concave lens 210, the ultraviolet light transmission component 250 and the infrared light transmission component 260 are both arranged between the dichroic mirror 240 and the first collimating lens 270, and the ultraviolet light transmission component 250 and the infrared light transmission component 260 are respectively arranged on two different output light paths of the dichroic mirror 240, therefore, the ultraviolet light beam and the infrared light beam focused on the same light path can be split by the dichroic mirror 240, so as to facilitate the subsequent optimization of the light beam for a specific wavelength band, which is helpful for the detailed analysis of the light beam for a specific wavelength band. At the same time, the optimized light beam can be focused on the same light path again through the first collimating lens 270, so as to ensure the consistency of the direction and uniformity of the light intensity of the light beam entering the reaction pool 110, so as to improve the accuracy of the detection results of complex gas components.

[0034] Specifically, in this embodiment, the first concave lens 210 is a plano-concave lens. The plane side of the plano-concave lens has basically no refractive effect on light, while the concave side causes the light to converge. Therefore, the plano-concave lens can achieve the purpose of converging ultraviolet light beams and infrared light beams.

[0035] Specifically, in this embodiment, the dichroic mirror 240 is characterized in that it almost completely transmits light of a certain wavelength and almost completely reflects light of other wavelengths. In this way, the infrared light beam and the ultraviolet light beam can be separated by the dichroic mirror 240, thereby achieving the purpose of spectral separation.

[0036] Reference Figure 2As shown, the dichroic mirror 240 is provided with an infrared light output optical path 241, and the infrared light transmission component 260 includes a second collimating lens 261 and a first transmission optical fiber 262. The second collimating lens 261 is arranged between the dichroic mirror 240 and the first collimating lens 270, and is arranged on the infrared light output optical path 241. The first transmission optical fiber 262 is arranged between the first collimating lens 270 and the second collimating lens 261, and is arranged on the output optical path of the second collimating lens 261, and the first collimating lens 270 is arranged on the output optical path of the first transmission optical fiber 262.

[0037] In this embodiment, the dichroic mirror 240 is completely transparent to the infrared light beam, so that the infrared light beam emitted through the first concave lens 210 can pass through the dichroic mirror 240 and fall onto the second collimating lens 261, so that the infrared light beam is guided to the first transmission optical fiber 262 through the second collimating lens 261, and then guided to the first collimating lens 270 through the first transmission optical fiber 262, so that the infrared light beam can enter the reaction pool 110 through the first collimating lens 270.

[0038] Specifically, in this embodiment, the infrared light source 220 is a DFB (Distributed Feedback Laser) laser. The DFB laser usually operates in the near-infrared band and has very good spectral purity, which can enable the spectral detection equipment of the present application to have a higher quality infrared beam. The second collimating lens 261 is a laser collimating lens. The laser collimating lens can convert the laser beam into a parallel collimated beam so as to guide the infrared beam to the first transmission optical fiber 262. The first transmission optical fiber 262 is a single-mode optical fiber. The laser beam transmitted by the single-mode optical fiber is extremely narrow and has extremely high beam quality and stability, so that the infrared beam entering the reaction pool 110 has a higher beam quality.

[0039] Continue to refer to Figure 2 As shown, the dichroic mirror 240 is also provided with an ultraviolet light output optical path 242, and the ultraviolet light output optical path 242 is arranged at an angle with the infrared light output optical path 241. The ultraviolet light transmission component 250 includes a first reflector 251 and a second transmission optical fiber 252. The first reflector 251 is arranged between the dichroic mirror 240 and the first collimating lens 270, and is arranged on the ultraviolet light output optical path 242. The second transmission optical fiber 252 is arranged between the first collimating lens 270 and the first reflector 251, and is arranged on the output optical path of the first reflector 251, and the first collimating lens 270 is arranged on the output optical path of the second transmission optical fiber 252.

[0040] In this embodiment, the dichroic mirror 240 almost completely reflects the ultraviolet light beam, so that the ultraviolet light beam emitted through the first concave lens 210 can fall on the first reflector 251 through the refraction of the dichroic mirror 240, so as to realize the splitting of the infrared light beam and the ultraviolet light beam. Furthermore, the ultraviolet light beam can be reflected to the second transmission optical fiber 252 through the first reflector 251, and then guided to the first collimating lens 270 through the second transmission optical fiber 252, so that the ultraviolet light beam can enter the reaction pool 110 through the first collimating lens 270.

[0041] Specifically, the ultraviolet light source 230 includes a plurality of light-emitting parts arranged in an array, the ultraviolet light beam emitted by each light-emitting part is focused on the same point of the concave surface of the first concave lens 210, and the ultraviolet light beams emitted by any two light-emitting parts are within different wavelength ranges.

[0042] In this embodiment, since the ultraviolet light beams emitted by any two light-emitting parts are in different wavelength ranges, ultraviolet light beams of different wavelength bands can enter the reaction pool 110 to expand the detection range of gas molecules. Since the ultraviolet light beam emitted by each light-emitting part is focused on the same point of the concave surface of the first concave lens 210, multiple ultraviolet light beams of different wavelength ranges can be converged into a composite ultraviolet light beam through the first concave lens 210, thereby improving the quality of the ultraviolet light beam.

[0043] Specifically, in this embodiment, the array arrangement of the plurality of light-emitting units may be a regular hexagonal arrangement, a regular quadrilateral arrangement, a regular octagonal arrangement, a cube arrangement, a regular octahedron arrangement, etc., and the specific arrangement form is determined according to the detection requirements.

[0044] Specifically, in this embodiment, the light emitting part is an LED ultraviolet lamp. Compared with ordinary ultraviolet lamps and xenon lamps, LED ultraviolet lamps have the advantages of low energy consumption and fast response speed, and can achieve optimal brightness in the shortest time while saving energy.

[0045] Specifically, in this embodiment, the second transmission optical fiber 252 is a multimode optical fiber, which can transmit ultraviolet light beams in different wavelength ranges to meet the requirements of light beam transmission in multiple wavelength ranges.

[0046] Continue to refer to Figure 2 As shown, the ultraviolet light transmission component 250 also includes an adjustment grating 253, which is arranged between the first reflector 251 and the second transmission optical fiber 252, and the adjustment grating 253 is located on the output light path of the first reflector 251, and the second transmission optical fiber 252 is located on the output light path of the adjustment grating 253.

[0047] In this embodiment, since the adjustment grating 253 is arranged between the first reflector 251 and the second transmission optical fiber 252, and the adjustment grating 253 is located on the output optical path of the first reflector 251, and the second transmission optical fiber 252 is located on the output optical path of the adjustment grating 253, the composite ultraviolet light beam can be reflected onto the adjustment grating 253 through the first reflector 251, so that the composite ultraviolet light beam can be decomposed into ultraviolet light beams of different wavelength ranges according to the detection requirements through the adjustment grating 253, so as to meet the detection requirements of different gas molecules, and further, the decomposed ultraviolet light beams of different wavelength ranges can be transmitted through the second transmission optical fiber 252.

[0048] Continue to refer to Figure 2 As shown, the ultraviolet light transmission component 250 also includes a first focusing component 254 and a second focusing component 255. The first focusing component 254 is arranged between the adjustment grating 253 and the second transmission optical fiber 252, and the first focusing component 254 is located on the output light path of the adjustment grating 253. The second focusing component 255 is arranged between the first focusing component 254 and the second transmission optical fiber 252, and the second focusing component 255 is located on the output light path of the first focusing component 254. The second transmission optical fiber 252 is located on the output light path of the second focusing component 255.

[0049] In this embodiment, since the first focusing element 254 is arranged between the adjustment grating 253 and the second transmission optical fiber 252, and the first focusing element 254 is located on the output optical path of the adjustment grating 253, when the adjustment grating 253 decomposes the composite ultraviolet light beam into ultraviolet light beams of different wavelength ranges according to the detection requirements, the first focusing element 254 can converge the ultraviolet light beams to control the propagation direction of each ultraviolet light beam and limit the width of each ultraviolet light beam, thereby improving the quality of each ultraviolet light beam. Furthermore, since the second focusing element 255 is arranged between the first focusing element 254 and the second transmission optical fiber 252, and the second focusing element 255 is located on the output optical path of the first focusing element 254, and the second transmission optical fiber 252 is located on the output optical path of the second focusing element 255, the ultraviolet light beams can be further converged by the second focusing element 255 to improve the focusing degree of each ultraviolet light beam and ensure that each ultraviolet light beam can fall on the second transmission optical fiber 252.

[0050] Specifically, in this embodiment, the first focusing element 254 is a focusing element with a light-transmitting slit, so that each ultraviolet light beam can propagate through the light-transmitting slit, thereby controlling the propagation direction of each ultraviolet light beam through the light-transmitting slit and limiting the width of each ultraviolet light beam; the second focusing element 255 is a converging lens, that is, a convex lens, which can further focus the ultraviolet light beam after passing through the light-transmitting slit through the converging lens to ensure that each ultraviolet light beam can fall onto the second transmission optical fiber 252.

[0051] Reference Figure 3 As shown, the reaction device 100 further includes a first concave reflecting mirror 120, a second concave reflecting mirror 130, a third concave reflecting mirror 140, a plane reflecting mirror 150 and a spectrum detecting element 160. The first concave reflecting mirror 120, the second concave reflecting mirror 130, the third concave reflecting mirror 140 and the plane reflecting mirror 150 are all arranged in the reaction pool 110, and the spectrum detecting element 160 is arranged on the reaction pool 110. The reaction pool 110 is provided with an air inlet 111, and the first concave reflecting mirror 120, the third concave reflecting mirror 140 and the plane reflecting mirror 150 are located on one side of the air inlet 111, and the second concave reflecting mirror 130 is disposed on the other side of the reaction pool 110. 0 and the spectrum detection component 160 are located on the other side of the air inlet 111, and the plane reflector 150 is located between the first concave reflector 120 and the third concave reflector 140; the first concave reflector 120 is located on the output light path of the first collimating lens 270, and the light beam reflected by the first concave reflector 120 is reflected to the plane reflector 150 via the second concave reflector 130, and then reflected back to the second concave reflector 130 via the plane reflector 150, and then reflected to the third concave reflector 140 via the second concave reflector 130, and then reflected to the spectrum detection component 160 via the third concave reflector 140.

[0052] Specifically, in the present embodiment, the first collimating lens 270 can transform the light beam passing through the collimating lens into a parallel collimated light beam, so as to improve the consistency of the propagation direction of the light beam in the reaction pool 110, thereby improving the quality of light.

[0053] In this embodiment, the light beam entering the reaction pool 110 through the first collimating lens 270 can fall on the first concave reflector 120, and be reflected to the second concave reflector 130 through the first concave reflector 120, and then be reflected to the plane reflector 150 through the second concave reflector 130, and then be reflected back to the second concave reflector 130 by the plane reflector 150, and then be reflected to the third concave reflector 140 through the second concave reflector 130, and then be reflected to the spectrum detection component 160 through the third concave reflector 140, so as to realize the light beam to be turned back through the air inlet 111 multiple times in the reaction pool 110, so that the gas entering the reaction pool 110 through the air inlet 111 can absorb the light beams of different wavelength ranges, so that the spectrum of the light beam after entering the reaction pool 110 can be compared with the spectrum of the light beam before entering the reaction pool 110 through the spectrum detection component 160, so as to realize the concentration detection of gas molecules.

[0054] Continue to refer to Figure 3 As shown, the second concave reflecting mirror 130 is located outside the focus of the first concave reflecting mirror 120 .

[0055] In this embodiment, since the second concave reflecting mirror 130 is located outside the focus of the first concave reflecting mirror 120, the light beam reflected by the first concave reflecting mirror 120 will first be focused at the focus after passing through the first concave reflecting mirror 120, and will gradually diverge after passing through the focus, and finally fall into the lower half of the second concave reflecting mirror 130 in a divergent state, and then the divergent light beam will be focused into a parallel light beam through the focusing effect of the second concave reflecting mirror 130, so that the light beam can fall on the plane reflecting mirror 150 in a parallel state, and then the light beam will be reflected to the upper half of the second concave reflecting mirror 130 in a parallel state through the effect of the plane reflecting mirror 150.

[0056] Continue to refer to Figure 3 As shown, the third concave reflecting mirror 140 is located outside the focus of the second concave reflecting mirror 130 .

[0057] In this embodiment, since the third concave reflecting mirror 140 is located outside the focus of the second concave reflecting mirror 130, the parallel light beam emitted through the upper half of the second concave reflecting mirror 130 will first be focused at the focus of the second concave reflecting mirror 130, and gradually diverge after passing the focus, and finally fall into the third concave reflecting mirror 140 in a divergent state, and then the divergent light beam is focused into a parallel light beam through the focusing effect of the third concave reflecting mirror 140, so that the light beam reflected from the third concave reflecting mirror 140 to the spectrum detection element 160 is a parallel light beam, so as to facilitate the detection of the spectrum of the light beam.

[0058] Specifically, continue to refer to Figure 3 As shown, in this embodiment, the second concave reflector 130 and the plane reflector 150 are symmetrically arranged on both sides of the air inlet 111, the first concave reflector 120 is arranged near the top of the second concave reflector 130, and the third concave reflector 140 is arranged near the bottom of the second concave reflector 130, so that the first concave reflector 120 can reflect the light beam to the lower half of the second concave reflector 130, and the plane reflector 150 can reflect the light beam to the upper half of the second concave reflector 130, and the second concave reflector 130 can reflect the light beam to the third concave reflector 140, so as to realize the propagation of the light beam in the reaction pool 110.

[0059] Continue to refer to Figure 3 As shown, the focus of the first concave reflecting mirror 120 and the focus of the second concave reflecting mirror 130 are overlapped on the overlapped focus 170 , and the reaction pool 110 is provided with a plurality of air inlets 111 arranged at intervals, and each air inlet 111 is arranged close to the overlapped focus 170 .

[0060] In this embodiment, since the focus of the first concave reflector 120 and the focus of the second concave reflector 130 are overlapped on the overlapping focus 170, more light beams can be focused on the overlapping focus 170. At this time, the light beam quality at the overlapping focus 170 is better, and has a better effect when absorbed by the gas, and the measurement result is more accurate. Since each air inlet 111 is arranged close to the overlapping focus 170, when the gas enters the reaction pool 110, the gas concentration detection result can be more accurate.

[0061] Specifically, in the present embodiment, the focus of the first concave reflecting mirror 120 and the second concave reflecting mirror 130 can be adjusted by adjusting the curvature or focal length of the first concave reflecting mirror 120, or by adjusting the curvature or focal length of the second concave reflecting mirror 130, so that the focus of the first concave reflecting mirror 120 and the focus of the second concave reflecting mirror 130 can overlap on the overlapping focus 170.

[0062] Specifically, in this embodiment, the wavelength range of the infrared light beam is generally between 780nm and 2526nm, the wavelength range of the ultraviolet light beam is generally between 10nm and 400nm, and ultraviolet light is divided into three types: A rays, B rays and C rays (referred to as UVA, UVB and UVC respectively), with wavelength ranges of 315nm to 400nm, 280nm to 315nm, and 190 nm to 280nm respectively.

[0063] In some embodiments, when it is necessary to combine the components of NO and NH 3 The combination of NO and NH 3 When the respective concentrations of NO are detected, the optimal wavelength corresponding to the absorption characteristics of NO is 200nm~228nm, and NH 3 The optimal wavelengths corresponding to the absorption characteristics of NO and NH are 190nm~220nm and 1511nm~1513nm. 3 There are overlapping absorption bands in the ultraviolet region. At this time, the spectrum detection device of the present application can be used to first measure the amount of infrared light absorbed to obtain NH 3 The content of NO and NH 3 The overlapping absorption of ultraviolet light in the ultraviolet light region can be obtained by subtracting the absorption of infrared light from the absorption of ultraviolet light to obtain the absorption of ultraviolet light by NO, so as to obtain the NO content and realize the simultaneous measurement of the two.

[0064] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0065] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A spectrum detection device, characterized in that: include: A reaction device, including a reaction tank; A light source emitting device, comprising a first concave lens, an infrared light source component, an ultraviolet light source component, a dichroic mirror, an ultraviolet light transmission component, an infrared light transmission component and a first collimating lens; The reaction pool and the first concave lens are respectively arranged on both sides of the first collimating lens, and the concave surface of the first concave lens is arranged toward the reaction pool, the dichroic mirror is arranged between the first concave lens and the first collimating lens, and the dichroic mirror is arranged on the output light path of the first concave lens; The ultraviolet light transmission component and the infrared light transmission component are both arranged between the dichroic mirror and the first collimating lens, and are respectively arranged on two different output light paths of the dichroic mirror, and the output light paths of the ultraviolet light transmission component and the infrared light transmission component both pass through the first collimating lens; The reaction pool is located on the output light path of the first collimating lens; The ultraviolet light source component and the infrared light source component are symmetrically arranged on both sides of the first concave lens, and the ultraviolet light beam emitted by the ultraviolet light source component and the infrared light beam emitted by the infrared light source component are focused on the same point of the concave surface of the first concave lens, and the ultraviolet light beam emitted by the ultraviolet light source component and the infrared light beam emitted by the infrared light source component are converged onto the same optical path through the first concave lens.

2. The spectrum detection device according to claim 1, characterized in that: The dichroic mirror is provided with an infrared light output optical path, and the infrared light transmission component includes a second collimating lens and a first transmission optical fiber, the second collimating lens is arranged between the dichroic mirror and the first collimating lens, and is arranged on the infrared light output optical path, the first transmission optical fiber is arranged between the first collimating lens and the second collimating lens, and is arranged on the output optical path of the second collimating lens, and the first collimating lens is arranged on the output optical path of the first transmission optical fiber.

3. The spectrum detection device according to claim 2, characterized in that: The dichroic mirror is also provided with an ultraviolet light output optical path, and the ultraviolet light output optical path is arranged at an angle with the infrared light output optical path. The ultraviolet light transmission component includes a first reflector and a second transmission optical fiber. The first reflector is arranged between the dichroic mirror and the first collimating lens and is arranged on the ultraviolet light output optical path. The second transmission optical fiber is arranged between the first collimating lens and the first reflector and is arranged on the output optical path of the first reflector. The first collimating lens is arranged on the output optical path of the second transmission optical fiber.

4. The spectrum detection device according to claim 3, characterized in that: The ultraviolet light transmission component also includes an adjustment grating, which is arranged between the first reflector and the second transmission optical fiber, and the adjustment grating is located on the output light path of the first reflector, and the second transmission optical fiber is located on the output light path of the adjustment grating.

5. The spectrum detection device according to claim 4, characterized in that: The ultraviolet light transmission component also includes a first focusing component and a second focusing component, the first focusing component is arranged between the adjustment grating and the second transmission optical fiber, and the first focusing component is located on the output light path of the adjustment grating, the second focusing component is arranged between the first focusing component and the second transmission optical fiber, and the second focusing component is located on the output light path of the first focusing component, and the second transmission optical fiber is located on the output light path of the second focusing component.

6. The spectrum detection device according to claim 1, characterized in that: The ultraviolet light source device includes a plurality of light-emitting parts, and the plurality of light-emitting parts are arranged in an array. The ultraviolet light beams emitted by each of the light-emitting parts are focused on the same point of the concave surface of the first concave lens, and the ultraviolet light beams emitted by any two of the light-emitting parts are within different wavelength ranges.

7. The spectrum detection device according to any one of claims 1 to 6, characterized in that: The reaction device further comprises a first concave reflecting mirror, a second concave reflecting mirror, a third concave reflecting mirror, a plane reflecting mirror and a spectrum detection component, wherein the first concave reflecting mirror, the second concave reflecting mirror, the third concave reflecting mirror and the plane reflecting mirror are all arranged in the reaction pool, and the spectrum detection component is arranged on the reaction pool; The reaction pool is provided with an air inlet, and the first concave reflector, the third concave reflector and the plane reflector are located on one side of the air inlet, the second concave reflector and the spectrum detection component are located on the other side of the air inlet, and the plane reflector is located between the first concave reflector and the third concave reflector; The first concave reflector is located on the output light path of the first collimating lens. The light beam reflected by the first concave reflector is reflected to the plane reflector via the second concave reflector, then reflected back to the second concave reflector via the plane reflector, then reflected to the third concave reflector via the second concave reflector, and then reflected to the spectrum detection element via the third concave reflector.

8. The spectrum detection device according to claim 7, characterized in that: The first concave reflecting mirror is located outside the focus of the second concave reflecting mirror.

9. The spectrum detection device according to claim 8, characterized in that: The focus of the first concave reflecting mirror and the focus of the second concave reflecting mirror are overlapped at the overlapped focus. The reaction pool is provided with a plurality of air inlets arranged at intervals, and each of the air inlets is arranged close to the overlapped focus.

10. The spectrum detection device according to claim 7, characterized in that: The third concave reflecting mirror is located outside the focus of the first concave reflecting mirror.

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