High temperature universal gas cell

Abstract

The utility model discloses a high temperature general gas measuring pool belongs to spectral analysis technical field, solves the problem that the current spectral gas measurement light pool can not realize high temperature gas effective measurement. A kind of high temperature general gas measuring pool, including shell, optical fiber module and be located in the prism lens subassembly of shell, the prism lens subassembly is located on the shell, the optical fiber module is located in one end of the shell;When using, high temperature gas is inhaled into the shell, the optical fiber module emits incident light to the prism lens subassembly, the prism lens subassembly reflects the incident light emitted by the optical fiber module to fiber optic spectrometer, and the fiber optic spectrometer carries out accurate measurement analysis to output light. The high temperature general gas measuring pool of the utility model is high in the accuracy rate of the detected gas and the high temperature general gas measuring pool is small in size, and is convenient to install.

Description

Technical Field

[0001] This utility model belongs to the field of spectroscopic analysis technology, specifically relating to a high-temperature universal gas measuring cell. Background Technology

[0002] Currently, a basic schematic diagram of a spectroscopic gas measurement optical cell used for gas detection is shown below. Figure 1 As shown, the system includes an incident fiber optic coupling connector (101), a sealed window (102), a first reflecting mirror (103), a second reflecting mirror (104), a third reflecting mirror (105), and an exiting fiber optic coupling connector (106). Light measuring the gas in the spectral gas measurement cell passes through the sealed window (102), enters the incident fiber optic coupling connector (101), and is reflected by the first reflecting mirror (103), then by the second reflecting mirror (104), and finally by the third reflecting mirror (105). After being reflected by the third reflecting mirror (105), the light passes through the sealed window (102) and enters the exiting fiber optic coupling connector (106). The light is then guided by an optical fiber to the fiber optic spectrometer, where the outgoing light is analyzed to detect the gas within the spectral analysis and detection module. Figure 1 As can be seen from the use of the device, the ultraviolet reflective film that needs to be deposited in the current spectroscopic gas measurement cell is a bottleneck in the industry. That is, if a high reflectivity ultraviolet reflective film is to be obtained, its high temperature resistance is not good, while the high temperature resistant ultraviolet reflective film that can be made has poor reflectivity. Therefore, the existing spectroscopic gas measurement cell is not easy to achieve effective measurement of high temperature gases. Utility Model Content

[0003] The purpose of this invention is to provide a high-temperature universal gas measuring cell, which solves the problem that existing spectroscopic gas measuring cells are not accurate enough when measuring high-temperature gases and are not easy to achieve effective measurement of high-temperature gases.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A high-temperature universal gas measuring cell includes a housing, an optical fiber module, and a prism lens assembly disposed within the housing. The prism lens assembly is located on the housing, and the optical fiber module is disposed at one end of the housing. In use, after high-temperature gas is introduced into the housing, the optical fiber module emits incident light that is directed toward the prism lens assembly. The prism lens assembly reflects the incident light emitted by the optical fiber module to a fiber optic spectrometer, which then performs precise measurement and analysis on the output light.

[0006] In some embodiments, the prism lens assembly includes a first compound prism lens, a second compound prism lens, and a third compound prism lens. The first compound prism lens is disposed at one end of the housing, and the second and third compound prism lenses are disposed perpendicularly at the other end of the housing and symmetrically disposed on the central axis of the housing.

[0007] In some embodiments, the housing further includes a rear end cover and a front end cover, the front end cover being disposed at one end of the housing, the rear end cover being disposed at the other end of the housing, the second compound prism lens and the third compound prism lens being fixedly disposed on the rear end cover, and the first compound prism lens being fixedly disposed on the front end cover.

[0008] In some embodiments, the optical fiber module includes an incident optical fiber assembly and an outgoing optical fiber assembly. The incident optical fiber assembly emits the incident light, which passes through the prism lens assembly and is reflected by the prism lens assembly before being directed to the outgoing optical fiber assembly to form outgoing light.

[0009] In some embodiments, the incident fiber assembly and the outgoing fiber assembly are vertically disposed at one end of the housing and symmetrically disposed on the central axis of the housing.

[0010] In some embodiments, the incident light emitted by the incident fiber assembly passes sequentially through the second composite prism lens, the first composite prism lens, and the third composite prism lens, and is then emitted through the exiting fiber assembly.

[0011] In some embodiments, the incident fiber assembly includes an incident fiber connector, an incident fiber disposed within the incident fiber connector, and an incident window connected to the incident fiber; the exiting fiber assembly includes an exiting fiber connector, an exiting fiber disposed within the exiting fiber connector, and an exiting window connected to the exiting fiber.

[0012] In some embodiments, the optical fiber module further includes a first fixing member, a second fixing member, a first sealing member, and a second sealing member, wherein the first fixing member is connected to the incident window, the first sealing member is disposed at the incident window, and the second sealing member is disposed at the exit window.

[0013] In some embodiments, the first composite prism lens includes a first prism and a first lens disposed on the first prism, the second composite prism lens includes a second prism and a second lens disposed on the second prism, and the third composite prism lens includes a third prism and a third lens disposed on the third prism, wherein the second lens and the third lens are both disposed opposite to the first lens.

[0014] In some embodiments, the first composite prism lens includes a first prism and a first lens arranged parallel to the first prism with its axis coinciding with the center line of the first prism; the second composite prism lens includes a second prism and a second lens arranged parallel to the second prism with its axis coinciding with the center line of the second prism; the third composite prism lens includes a third prism and a third lens arranged parallel to the third prism with its axis coinciding with the center line of the third prism; both the second lens and the third lens are arranged opposite to the first lens.

[0015] In some embodiments, the first prism, the second prism, and the third prism are solid prisms or hollow prisms.

[0016] In some embodiments, the first lens, the second lens, and the third lens are spherical lenses or aspherical lenses.

[0017] In some embodiments, the housing is provided with a first air port and a second air port, and the gas flows out of the second air port through the first air port.

[0018] Compared with the prior art, the high-temperature universal gas measuring cell of this utility model introduces gas into the housing, the optical fiber module emits incident light which is directed to the prism lens assembly, the prism lens assembly reflects the incident light emitted by the optical fiber module to the fiber optic spectrometer, the light is reflected and refracted inside the housing and output, the fiber optic spectrometer measures and analyzes the output light, the fiber optic spectrometer measures and analyzes the output light, the high-temperature gas being measured can be detected with high accuracy, and the high-temperature universal gas measuring cell is small in size and easy to install. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of an existing gas spectral detection cell;

[0020] Figure 2 A schematic diagram of a high-temperature universal gas measuring cell provided for an embodiment of this utility model;

[0021] Figure 3 This is a first schematic diagram of the first composite prism lens of this utility model;

[0022] Figure 4 This is a first schematic diagram of the second composite prism lens of this utility model;

[0023] Figure 5 This is a first schematic diagram of the third composite prism lens of this utility model;

[0024] Figure 6 This is a second schematic diagram of the first composite prism lens of this utility model;

[0025] Figure 7This is a second schematic diagram of the first composite prism lens of this utility model;

[0026] Figure 8 This is a second schematic diagram of the first composite prism lens of this utility model.

[0027] In the figure, 101. Incident fiber optic coupling connector, 102. Sealed window, 103. First reflector, 104. Second reflector, 105. Third reflector, 106. Outgoing fiber optic coupling connector; 1. Housing, 11. First air port, 12. Second air port, 13. Rear end cover, 14. Front end cover, 2. Prism lens assembly, 21. First compound prism lens, 211. First prism, 212. First lens, 22. Second compound prism lens, 221. Second prism. 222. Second lens, 23. Third compound prism lens, 231. Third prism, 232. Third lens, 3. Fiber optic module, 31. Incident fiber assembly, 311. Incident fiber connector, 312. Incident fiber, 313. Incident window, 32. Outgoing fiber assembly, 321. Outgoing fiber connector, 322. Outgoing fiber, 323. Outgoing window, 33. First fixing member, 34. Second fixing member, 35. First sealing member, 36. Second sealing member. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] In the description of this utility model, it should be clarified that the terms "vertical," "lateral," "longitudinal," "front," "rear," "left," "right," "up," "down," and "horizontal," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are merely for the convenience of describing this utility model. They do not imply that the device or element referred to must have a specific orientation or position, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] This utility model provides a high-temperature universal gas measuring cell, such as... Figure 2As shown, the device includes a housing 1, an optical fiber module 3, and a prism lens assembly 2 disposed within the housing 1. The prism lens assembly 2 is located on the housing 1, and the optical fiber module 3 is disposed at one end of the housing 1. In use, after high-temperature gas is introduced into the housing 1, the optical fiber module 3 emits incident light that is directed toward the prism lens assembly 2. The prism lens assembly 2 reflects the incident light emitted by the optical fiber module 3 to the optical fiber spectrometer, which then performs precise measurement and analysis on the output light.

[0031] After adopting the above scheme, the gas is introduced into the housing 1. The optical fiber module 3 emits incident light that is directed towards the prism lens assembly 2. The prism lens assembly 2 reflects the incident light emitted by the optical fiber module 3 to the fiber optic spectrometer. The light is reflected and refracted inside the housing 1 and output. The fiber optic spectrometer measures and analyzes the output light. The fiber optic spectrometer can detect high-temperature gas with high accuracy. Moreover, the high-temperature universal gas measuring cell is small in size and does not take up much space.

[0032] In this embodiment, the prism lens assembly 2 includes a first composite prism lens 21, a second composite prism lens 22, and a third composite prism lens 23. The first composite prism lens 21 is disposed at one end of the housing 1, and the second composite prism lens 22 and the third composite prism lens 23 are perpendicularly disposed at the other end of the housing 1 and symmetrically disposed on the central axis of the housing 1.

[0033] In this embodiment, the housing 1 further includes a rear end cover 13 and a front end cover 14. The front end cover 14 is located at one end of the housing 1, and the rear end cover 13 is located at the other end of the housing 1. The second compound prism lens 22 and the third compound prism lens 23 are both fixedly mounted on the rear end cover 13, and the first compound prism lens 21 is fixedly mounted on the front end cover 14.

[0034] More specifically, the housing 1 also includes a rear end cover 13 and a front end cover 14. The second compound prism lens 22 and the third compound prism lens 23 are both fixed on the rear end cover 13, and the first compound prism lens 21 is fixed on the front end cover 14. The fixing method can be adopted in a variety of ways, such as by adhesive, magnetic attraction or other mechanical parts.

[0035] In this embodiment, the optical fiber module 3 includes an incident optical fiber assembly 31 and an outgoing optical fiber assembly 32. The incident optical fiber assembly 31 emits the incident light, which passes through the prism lens assembly 2 and is reflected by the prism lens assembly 2 before being directed to the outgoing optical fiber assembly 32 to form outgoing light.

[0036] In this embodiment, the incident fiber assembly 31 and the outgoing fiber assembly 32 are vertically disposed at one end of the housing 1 and symmetrically disposed on the central axis of the housing 1.

[0037] More specifically, the incident fiber assembly 31 and the outgoing fiber assembly 32 are vertically disposed at one end of the housing 1 and located on the same central axis, so that the gas to be measured can be more fully reflected by light inside the housing 1, making the measurement results more accurate.

[0038] Furthermore, the incident fiber assembly 31 and the outgoing fiber assembly 32 are vertically disposed on the front end cover 14.

[0039] In this embodiment, the incident light emitted by the incident fiber assembly 31 passes sequentially through the second composite prism lens 22, the first composite prism lens 21, and the third composite prism lens 23, and is then emitted through the exiting fiber assembly 32.

[0040] More specifically, the incident light emitted by the incident fiber assembly 31 passes sequentially through the second composite prism lens 22, the first composite prism lens 21 and the third composite prism lens 23, and is then emitted through the exiting fiber assembly 32, so that the gas being measured can be more fully reflected by the light inside the housing 1, making the measurement results more accurate.

[0041] In this embodiment, the incident fiber assembly 31 includes an incident fiber connector 311, an incident fiber 312 disposed within the incident fiber connector 311, and an incident window 313 connected to the incident fiber 312. The exiting fiber assembly 32 includes an exiting fiber connector 321, an exiting fiber 322 disposed within the exiting fiber connector 321, and an exiting window 323 connected to the exiting fiber 322.

[0042] More specifically, the incident light used for gas measurement is introduced through the incident optical fiber 312, which is connected to the incident optical fiber connector 311. It is then directed through the incident window 313 to the prism lens assembly 2. After being reflected by the prism lens assembly 2, it passes through the exit window 323 and is transmitted to the fiber optic spectrometer via the exit optical fiber 322. The exit optical fiber 322 is connected to the exit optical fiber connector 321.

[0043] Furthermore, by setting the incident fiber connector 311 and the outgoing fiber connector 321, the incident fiber 312 and the outgoing fiber 322 can be made conjugate.

[0044] Furthermore, collimating lenses can be installed at both the incident fiber 312 and the exit fiber 322 to further improve coupling efficiency and enhance the intensity of the measured light.

[0045] Furthermore, the incident light used for gas measurement is introduced through the incident optical fiber 312, directed towards the second compound prism lens 22, reflected by the second compound prism lens 22 and directed towards the first compound prism lens 21, reflected by the first compound prism lens 21 and directed towards the third compound prism lens 23, which reflects it to the exit window 323, and then through the exit optical fiber 322 to the fiber optic spectrometer. The light is reflected three times in the gas measurement cell.

[0046] Furthermore, the fixed angles between the first composite prism lens 21, the second composite prism lens 22, and the third composite prism lens 23 and the housing 1 can be adjusted in different ways according to the actual optical system design.

[0047] Furthermore, the first composite prism lens 21, the second composite prism lens 22, and the third composite prism lens 23 can be fixed to the housing 1 in various ways, such as by adhesive, magnetic attraction, or other mechanical parts.

[0048] In this embodiment, the optical fiber module 3 further includes a first fixing member 33, a second fixing member 34, a first sealing member 35, and a second sealing member 36. The first fixing member 33 is connected to the incident window 313, the first sealing member 35 is located at the incident window 313, and the second sealing member 36 is located at the exit window 323.

[0049] More specifically, the first fixing member 33 is used to fix the entrance window 313, the second fixing member 34 is used to fix the exit window 323, the first sealing member 35 is provided at the entrance window 313, and the second sealing member 36 is provided at the exit window 323. The first sealing member 35 and the second sealing member 36 not only serve to fix the entrance window 313 and the exit window 323, but also serve to seal the gas being measured.

[0050] Furthermore, the first seal 35 and the second seal 36 are non-metallic sealing rings, metallic sealing gaskets, or other components that can perform a sealing function.

[0051] In the specific implementation process of this embodiment, such as Figures 3-5 As shown, the first compound prism lens 21 includes a first prism 211 and a first lens 212 disposed on the first prism 211; the second compound prism lens 22 includes a second prism 221 and a second lens 222 disposed on the second prism 221; and the third compound prism lens 23 includes a third prism 231 and a third lens 232 disposed on the third prism 231. The second lens 222 and the third lens 232 are both disposed opposite to the first lens 212.

[0052] More specifically, the incident light passes through the second lens 222 and is directed towards the second prism 221. After being reflected by the second prism 221, the light passes through the second lens 222 again and exits. Therefore, the second compound prism 22 acts as an optical reflector. Similarly, the first compound prism 21 and the third compound prism 23, like the second compound prism 22, also act as optical reflectors. The second compound prism 22 and the third compound prism 23 are installed at an angle, meaning that the edges of the prisms are symmetrically mounted on the rear end cover 13 at a certain angle. Thus, the incident light is reflected between the second compound prism 22, the first compound prism 21, and the third compound prism 23 to form the outgoing light, and the incident and outgoing light are in a conjugate state.

[0053] Furthermore, the first prism 211 is used for both light reflection and fixing the first lens 212, the second prism 221 is used for both light reflection and fixing the second lens 222, and the third prism 231 is used for both light reflection and fixing the third lens 232.

[0054] In the specific implementation process of this embodiment, such as Figures 6-8 As shown, the first compound prism lens 21 includes a first prism 211 and a first lens 212 arranged parallel to the first prism 211 and whose axis coincides with the center line of the first prism 211. The second compound prism lens 22 includes a second prism 221 and a second lens 222 arranged parallel to the second prism 221 and whose axis coincides with the center line of the second prism 221. The third compound prism lens 23 includes a third prism 231 and a third lens 232 arranged parallel to the third prism 231 and whose axis coincides with the center line of the third prism 231. The second lens 222 and the third lens 232 are both arranged opposite to the first lens 212.

[0055] More specifically, the separate first lens 212 and first prism 211, the separate second lens 222 and second prism 221, and the separate third lens 232 and third prism 231 also function as optical reflectors.

[0056] In this embodiment, the first prism 211, the second prism 221, and the third prism 231 are solid prisms or hollow prisms.

[0057] In this embodiment, the first lens 212, the second lens 222, and the third lens 232 are either spherical lenses or aspherical lenses.

[0058] Furthermore, the first composite prism lens 21, the second composite prism lens 22, and the third composite prism lens 23 may or may not be coated with optical films.

[0059] Furthermore, the first composite prism lens 21, the second composite prism lens 22, and the third composite prism lens 23 can cover ultraviolet light, visible light, and infrared light, that is, the high-temperature gas measuring cell of this utility model embodiment can use ultraviolet light, visible light, and infrared light, etc.

[0060] In this embodiment, the housing 1 is provided with a first air port 11 and a second air port 12, and the gas flows out of the second air port 12 through the first air port 11.

[0061] More specifically, the first air inlet 11 is an air inlet, and conversely, the second air inlet 12 can also be an air inlet, while the first air inlet 11 is an air outlet at this time.

[0062] The workflow provided by this utility model embodiment is as follows: The incident light for gas measurement is introduced through the incident optical fiber 312, passes through the incident window 313, and is fixed by the first fixing member 33. The light is sequentially directed towards the second composite prism lens 22, the first composite prism lens 21, and the third composite prism lens 23 to form an M-shaped optical path. After exiting through the exit window 323, the light is transmitted to the fiber optic spectrometer via the exit optical fiber 322. The second fixing member 34 fixes the exit window 323. The first sealing member 35 is located at the incident window 313, and the second sealing member 36 is located at the exit window 323 to seal the gas to be measured. The gas to be measured can be measured by analyzing the spectral characteristics of the output light through the fiber optic spectrometer. The gas to be measured can also be a high-temperature gas.

[0063] In summary, the gas measuring cell of this invention introduces gas into the housing 1, and the optical fiber module 3 emits incident light that is directed towards the prism lens assembly 2. The prism lens assembly 2 reflects the incident light emitted by the optical fiber module 3 to the fiber optic spectrometer. The light is reflected and refracted inside the housing 1 and output. The fiber optic spectrometer performs measurement and analysis on the output light, including at high temperatures. The fiber optic spectrometer can detect the gas being measured with high accuracy, and this high-temperature universal gas measuring cell is small in size and easy to install.

[0064] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A high-temperature universal gas measuring cell, characterized in that, The device includes a housing (1), an optical fiber module (3), and a prism lens assembly (2) disposed within the housing (1). The prism lens assembly (2) is located on the housing (1), and the optical fiber module (3) is disposed at one end of the housing (1). In use, after high-temperature gas is introduced into the housing (1), the optical fiber module (3) emits incident light that is directed toward the prism lens assembly (2). The prism lens assembly (2) reflects the incident light emitted by the optical fiber module (3) to the optical fiber spectrometer, which then performs precise measurement and analysis on the output light.

2. The high-temperature universal gas measuring cell according to claim 1, characterized in that, The prism assembly (2) includes a first compound prism (21), a second compound prism (22) and a third compound prism (23). The first compound prism (21) is disposed at one end of the housing (1), and the second compound prism (22) and the third compound prism (23) are disposed perpendicularly at the other end of the housing (1) and symmetrically disposed on the central axis of the housing (1).

3. The high-temperature universal gas measuring cell according to claim 2, characterized in that, The housing (1) further includes a rear end cover (13) and a front end cover (14). The front end cover (14) is located at one end of the housing (1), and the rear end cover (13) is located at the other end of the housing (1). The second compound prism lens (22) and the third compound prism lens (23) are both fixedly mounted on the rear end cover (13), and the first compound prism lens (21) is fixedly mounted on the front end cover (14).

4. The high-temperature universal gas measuring cell according to claim 2, characterized in that, The optical fiber module (3) includes an incident optical fiber assembly (31) and an outgoing optical fiber assembly (32). The incident optical fiber assembly (31) emits the incident light to the prism lens assembly (2), and after being reflected by the prism lens assembly (2), it is directed to the outgoing optical fiber assembly (32) to form outgoing light.

5. The high-temperature universal gas measuring cell according to claim 4, characterized in that, The incident fiber assembly (31) and the outgoing fiber assembly (32) are perpendicularly disposed at one end of the housing (1) and symmetrically disposed on the central axis of the housing (1).

6. The high-temperature universal gas measuring cell according to claim 5, characterized in that, The incident light emitted by the incident fiber assembly (31) passes sequentially through the second composite prism lens (22), the first composite prism lens (21), and the third composite prism lens (23), and is then emitted through the outgoing fiber assembly (32).

7. The high-temperature universal gas measuring cell according to claim 4, characterized in that, The incident fiber assembly (31) includes an incident fiber connector (311), an incident fiber (312) disposed within the incident fiber connector (311), and an incident window (313) connected to the incident fiber (312). The exit fiber assembly (32) includes an exit fiber connector (321), an exit fiber (322) disposed within the exit fiber connector (321), and an exit window (323) connected to the exit fiber (322).

8. The high-temperature universal gas measuring cell according to claim 7, characterized in that, The fiber optic module (3) further includes a first fixing member (33), a second fixing member (34), a first sealing member (35), and a second sealing member (36). The first fixing member (33) is connected to the incident window (313), the first sealing member (35) is located at the incident window (313), and the second sealing member (36) is located at the exit window (323).

9. The high-temperature universal gas measuring cell according to claim 2, characterized in that, The first compound prism lens (21) includes a first prism (211) and a first lens (212) disposed on the first prism (211). The second compound prism lens (22) includes a second prism (221) and a second lens (222) disposed on the second prism (221). The third compound prism lens (23) includes a third prism (231) and a third lens (232) disposed on the third prism (231). The second lens (222) and the third lens (232) are both disposed opposite to the first lens (212).

10. The high-temperature universal gas measuring cell according to claim 2, characterized in that, The first compound prism lens (21) includes a first prism (211) and a first lens (212) arranged parallel to the first prism (211) and whose axis coincides with the center line of the first prism (211). The second compound prism lens (22) includes a second prism (221) and a second lens (222) arranged parallel to the second prism (221) and whose axis coincides with the center line of the second prism (221). The third compound prism lens (23) includes a third prism (231) and a third lens (232) arranged parallel to the third prism (231) and whose axis coincides with the center line of the third prism (231). The second lens (222) and the third lens (232) are both arranged opposite to the first lens (212).

11. The high-temperature universal gas measuring cell according to claim 9 or 10, characterized in that, The first prism (211), the second prism (221) and the third prism (231) are solid prisms or hollow prisms.

12. The high-temperature universal gas measuring cell according to claim 9 or 10, characterized in that, The first lens (212), the second lens (222), and the third lens (232) are spherical lenses or aspherical lenses.

13. The high-temperature universal gas measuring cell according to any one of claims 2-10, characterized in that, The housing (1) is provided with a first air port (11) and a second air port (12), and the gas flows out of the second air port (12) through the first air port (11).

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