Flue gas absorption cell easy to maintain

Abstract

The utility model relates to a flue gas absorption cell easy to maintain, which comprises a lens end cover assembly, a pair of dustproof lens assemblies, a pair of gas path interfaces, a gas absorption cell cavity and a reflector end cover assembly, and the lens end cover assembly and the reflector end cover assembly are respectively arranged at the left end and the right end of the gas absorption cell cavity. The dustproof lens assembly is arranged in the gas absorption cell cavity, and the gas path interface is arranged above the gas absorption cell cavity and is communicated with the gas absorption cell cavity; the dust-proof lens assembly comprises ultraviolet plane glass and a dust-proof lens assembly shell, the dust-proof lens assembly shell is fixed on the gas absorption cell cavity through a positioning pin and partially extends into the gas absorption cell cavity, and the ultraviolet plane glass is fixed on the dust-proof lens assembly shell through UV curing. The optical component and the to-be-monitored gas are separated through the dustproof lens assembly, so that dust in the flue gas cannot be accumulated on the surface of the optical component, and the failure risk of the flue gas analyzer is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas monitoring, in particular to a flue gas absorption pool which is easy to maintain. Background Art

[0002] With the continuous development of industry, the requirements of various enterprises for flue gas emissions and production processes are constantly increasing. Real-time measurement and analysis of flue gas components is one of the production focuses of an enterprise. At this stage, ultraviolet spectrometer is one of the important means to monitor flue gas components. In the production process of flue gas monitoring, dust is inevitably present in the flue gas to be monitored. In most gas absorption cells on the market, the flue gas to be monitored is in direct contact with optical components. After working for a long time, dust accumulates on the optical components. As a result, the energy value of the gas analyzer decreases after a period of use, and the gas analyzer must be maintained.

[0003] At present, there are two ways for maintenance personnel to deal with gas analyzers: 1. Send it back to the manufacturer for maintenance; 2. Manually disassemble it for flushing or wiping. The first method not only requires high maintenance costs, but also affects the daily production of the enterprise, and the time cost is high; the second method is simple and fast, but there is a risk of scratching optical components and failing to restore the optical path, which has a certain impact on the normal production of the enterprise.

[0004] Based on this, an easy-to-maintain flue gas absorption pool is proposed to solve the above-mentioned problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an easy-to-maintain flue gas absorption pool, which can prevent dust in the flue gas from damaging optical components, reduce the cost and difficulty of manual maintenance, and ensure that the flue gas analyzer can work effectively for a long time.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an easy-to-maintain flue gas absorption cell, comprising a lens end cover assembly, a pair of dustproof lens assemblies, a pair of gas path interfaces, a gas absorption cell cavity and a reflector end cover assembly, wherein the lens end cover assembly and the reflector end cover assembly are respectively installed at the left and right ends of the gas absorption cell cavity, the dustproof lens assembly is installed in the gas absorption cell cavity, and the gas path interface is installed above the gas absorption cell cavity and communicated with it;

[0007] The dustproof lens assembly comprises an ultraviolet plane glass and a dustproof lens assembly housing, the dustproof lens assembly housing is fixed to the gas absorption cell cavity by a positioning pin, and a portion of the housing extends into the gas absorption cell cavity, and the ultraviolet plane glass is fixed to the dustproof lens assembly housing by UV curing;

[0008] The gas absorption cell cavity is a square hollow cavity with a smooth inner wall, and the inner size of the gas absorption cell cavity is consistent with the size of the part of the dustproof lens assembly shell placed inside the gas absorption cell cavity.

[0009] Furthermore, the lens end cover assembly includes two ultraviolet lenses, a square ultraviolet reflector, a lens end cover body and an optical adjuster. The lens end cover body is fixed to the left end of the gas absorption cell cavity. The ultraviolet lens and the square ultraviolet reflector are fixed to the lens end cover body by UV curing. The optical adjuster is installed on the lens end cover body.

[0010] Furthermore, the lens end cover body is provided with an arc-shaped groove for installing the optical adjuster, and the arc-shaped protrusion of the optical adjuster and the arc-shaped groove of the lens end cover body have the same curvature.

[0011] Furthermore, a positioning pin hole is provided on the dustproof lens assembly housing, and the positioning pin hole matches the positioning pin of the gas absorption cell cavity.

[0012] Furthermore, a sealing ring in contact with the top of the dustproof lens assembly housing is embedded on the top surface of the gas absorption cell cavity.

[0013] Furthermore, the reflector end cap assembly includes two circular ultraviolet reflectors and a reflector end cap body. The reflector end cap body is fixed to the right end of the gas absorption cell cavity. The circular ultraviolet reflector is fixed to the reflector end cap body by UV curing.

[0014] Furthermore, the gas path interface is a universal barbed elbow.

[0015] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0016] The easy-to-maintain flue gas absorption pool separates the optical components and the gas to be monitored through a dust-proof lens assembly, so that dust in the flue gas cannot accumulate on the surface of the optical components, reducing the risk of failure of the flue gas analyzer;

[0017] During long-term use, if there is dust on the surface of the dust-proof lens assembly, maintenance personnel can directly remove the dust-proof lens assembly to rinse or wipe it, which is simple and quick. If there is excessive wiping, the maintenance cost of the dust-proof lens assembly is much lower than the maintenance cost of optical components (especially reflectors);

[0018] In addition, during the maintenance process, maintenance personnel do not need to disassemble optical components, which has little impact on the main optical path and reduces the risk of a significant reduction in the energy value of the flue gas analyzer;

[0019] By providing positioning pins, the original optical path at the factory can be restored to the greatest extent possible, reducing the risk of failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the lens end cover assembly of the utility model;

[0022] Figure 3 This is a schematic diagram of the dustproof lens assembly of the utility model;

[0023] Figure 4 This is a schematic diagram of the reflector end cover assembly of the utility model;

[0024] Figure 5 This is a simulation diagram of the optical path of the utility model;

[0025] Figure 6 This is the appearance diagram of the structure of the utility model.

[0026] In the figure: 1. Lens end cover assembly; 2. Dust-proof lens assembly; 3. Gas path interface; 4. Gas absorption cell cavity; 5. Reflector end cover assembly; 6. UV lens; 7. Square UV reflector; 8. Lens end cover body; 9. Optical adjuster; 10. Dust-proof lens assembly housing; 11. UV flat glass; 12. Round UV reflector; 13. Reflector end cover body. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-6 In this embodiment, an easy-to-maintain flue gas absorption cell comprises a lens end cover assembly 1, a pair of dustproof lens assemblies 2, a pair of gas path interfaces 3, a gas absorption cell cavity 4 and a reflector end cover assembly 5. The lens end cover assembly 1 and the reflector end cover assembly 5 are respectively installed at the left and right ends of the gas absorption cell cavity 4, the dustproof lens assembly 2 is installed in the gas absorption cell cavity 4, the gas path interface 3 is installed above the gas absorption cell cavity 4 and is connected thereto, and the gas path interface 3 is a universal barb elbow, which is easy to disassemble and replace, thereby improving practicality.

[0029] When in use, after the monitored gas enters the gas absorption cell cavity 4 through the gas path interface 3, the gas molecules can fill the entire cavity, while most of the dust exists between the two sets of dustproof lens components 2, which can protect the optical components to the greatest extent. The ultraviolet light source emits light, which is focused by the lens end cover component 1 through the light input end of a focal length adjuster and enters the gas absorption cell cavity 4. After multiple reflections through the reflector end cover component 5, the light enters the optical fiber from the optical fiber input end of another focal length adjuster, and enters the spectrometer and other analytical instruments after optical fiber transmission, so as to realize the detection of the monitored gas.

[0030] like Figure 2 As shown, the lens end cover assembly 1 includes two ultraviolet lenses 6, a square ultraviolet reflector 7, a lens end cover body 8 and a pair of optical adjusters 9. The lens end cover body 8 is fixed to the left end of the gas absorption cell cavity 4. The ultraviolet lens 6 and the square ultraviolet reflector 7 are fixed to the lens end cover body 8 by UV curing, and the optical adjuster 9 is installed on the lens end cover body 8.

[0031] The lens end cap body 8 is provided with an arc-shaped groove for installing the optical adjuster 9, and the arc-shaped protrusion of the optical adjuster 9 has the same curvature as the arc-shaped groove of the lens end cap body 8. The optical adjuster 9 can be rotated at a certain angle on the lens end cap body 8. During factory adjustment and return to factory repair, the main light path is adjusted by rotating the optical adjuster 9. As for the rotation method of the optical adjuster 9, it is a well-known technology and will not be described in detail here.

[0032] like Figure 3 As shown, the dustproof lens assembly 2 includes an ultraviolet flat glass 11 and a dustproof lens assembly shell 10. The dustproof lens assembly shell 10 is fixed to the gas absorption cell cavity 4 by positioning pins, and partially extends into the gas absorption cell cavity 4. The ultraviolet flat glass 11 is fixed to the dustproof lens assembly shell 10 by UV curing. Positioning pin holes are provided on the dustproof lens assembly shell 10, and the positioning pin holes match the positioning pins of the gas absorption cell cavity 4, which can ensure that the dustproof lens assembly 2 has minimal impact on the main optical path during the disassembly and assembly process.

[0033] In addition, a sealing ring in contact with the top of the dustproof lens assembly housing 10 is embedded on the top surface of the gas absorption cell cavity 4, so as to ensure the sealing performance of the dustproof lens assembly 2 after installation.

[0034] The gas absorption cell cavity 4 is a square hollow cavity with a smooth inner wall. The internal dimensions of the gas absorption cell cavity 4 are consistent with the dimensions of the part of the dustproof lens assembly shell 10 placed inside the gas absorption cell cavity 4, and a sealing strip in contact with the dustproof lens assembly shell 10 is embedded on the inner wall of the gas absorption cell cavity 4, which can ensure that the contact part between the gas absorption cell cavity 4 and the dustproof lens assembly 2 can achieve a dustproof effect and prevent dust from contacting optical components.

[0035] like Figure 4 As shown, the reflector end cap assembly 5 includes two circular UV reflectors 12 and a reflector end cap body 13. The reflector end cap body 13 is fixed to the right end of the gas absorption cell cavity 4. The circular UV reflector 12 is fixed to the reflector end cap body 13 by UV curing. The lens end cap assembly 1 and the reflector end cap assembly 5 form the main light path of the gas absorption cell, ensuring that light enters from one end of the lens end cap assembly 1 and exits from the other end after multiple reflections.

[0036] By using the above-mentioned easy-to-maintain flue gas absorption pool, it is possible to prevent dust in the flue gas from damaging optical components and reduce the cost and difficulty of manual maintenance. The specific usage method is as follows:

[0037] First, the gas to be monitored enters the gas absorption cell cavity 4 through the gas path interface 3. The gas molecules can fill the entire cavity, and most of the dust exists between the two ultraviolet plane glasses 11, which can protect the optical components to the greatest extent. When the device is working, the light emitted from the ultraviolet light source passes through the optical fiber input end on a focal length adjuster and is focused by an ultraviolet lens 6 and enters the gas absorption cell cavity 4, and passes through a circular ultraviolet reflector 12, a square ultraviolet reflector 7, another circular ultraviolet reflector 12 in sequence, and finally is focused by another ultraviolet lens 6, and enters the optical fiber from the optical fiber output end on another focal length adjuster, and enters the spectrometer and other analytical devices after optical fiber transmission.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An easy-to-maintain flue gas absorption pool, characterized in that: The invention comprises a lens end cover assembly (1), a pair of dustproof lens assemblies (2), a pair of gas path interfaces (3), a gas absorption cell cavity (4) and a reflector end cover assembly (5), wherein the lens end cover assembly (1) and the reflector end cover assembly (5) are respectively mounted on the left and right ends of the gas absorption cell cavity (4), the dustproof lens assembly (2) is mounted in the gas absorption cell cavity (4), and the gas path interface (3) is mounted above the gas absorption cell cavity (4) and is in communication with the gas absorption cell cavity (4); The dustproof lens assembly (2) comprises an ultraviolet flat glass (11) and a dustproof lens assembly housing (10); the dustproof lens assembly housing (10) is fixed to the gas absorption cell cavity (4) by means of positioning pins and partially extends into the gas absorption cell cavity (4); the ultraviolet flat glass (11) is fixed to the dustproof lens assembly housing (10) by means of UV curing; The gas absorption cell cavity (4) is a square hollow cavity with a smooth inner wall, and the internal dimensions of the gas absorption cell cavity (4) are consistent with the dimensions of the portion of the dustproof lens assembly housing (10) placed inside the gas absorption cell cavity (4).

2. The easy-to-maintain flue gas absorption pool according to claim 1, characterized in that: The lens end cover assembly (1) comprises two ultraviolet lenses (6), a square ultraviolet reflector (7), a lens end cover body (8) and a pair of optical adjusters (9); the lens end cover body (8) is fixed to the left end of the gas absorption cell cavity (4); the ultraviolet lens (6) and the square ultraviolet reflector (7) are both fixed to the lens end cover body (8) by UV curing; and the optical adjuster (9) is installed on the lens end cover body (8).

3. The easy-to-maintain flue gas absorption pool according to claim 2, characterized in that: The lens end cover body (8) is provided with an arc-shaped groove for installing the optical adjuster (9), and the arc-shaped protrusion of the optical adjuster (9) and the arc-shaped groove of the lens end cover body (8) have the same curvature.

4. The easy-to-maintain flue gas absorption pool according to claim 1, characterized in that: The dustproof lens assembly housing (10) is provided with a positioning pin hole, and the positioning pin hole matches the positioning pin of the gas absorption cell cavity (4).

5. The easy-to-maintain flue gas absorption pool according to claim 1, characterized in that: A sealing ring in contact with the top of the dustproof lens assembly housing (10) is embedded on the top surface of the gas absorption cell cavity (4).

6. The easy-to-maintain flue gas absorption pool according to claim 1, characterized in that: The reflector end cover assembly (5) comprises two circular ultraviolet reflectors (12) and a reflector end cover body (13); the reflector end cover body (13) is fixed to the right end of the gas absorption cell cavity (4); and the circular ultraviolet reflector (12) is fixed to the reflector end cover body (13) by UV curing.

7. The easy-to-maintain flue gas absorption pool according to claim 1, characterized in that: The gas path interface (3) is a universal barbed elbow.

Images