Ultraviolet flue gas analyzer and detachable gas chamber thereof

Abstract

The utility model discloses an ultraviolet flue gas analyzer and a detachable gas chamber thereof. The detachable gas chamber comprises a gas chamber outer pipe, a gas chamber inner pipe, an end cover, a reflection assembly, a protection window sheet and a collimating mirror assembly, the air chamber inner pipe is detachably installed in the air chamber outer pipe, and the reflection assembly and the protection window piece are detachably installed at the first end and the second end of the air chamber inner pipe respectively. The end cover and the collimating mirror assembly are detachably installed at the first end and the second end of the gas chamber outer pipe respectively. And the protection window sheet can isolate and protect the collimator assembly, so that the optical lens is prevented from being polluted. The reflection assembly, the protection lens and the air chamber inner pipe form an integral module, when cleaning and maintenance are needed, the integral module can be taken out together, through the modularized design, the air chamber can be conveniently and rapidly disassembled, cleaned and maintained, the maintenance difficulty of the instrument is further reduced, the modularized design can also conveniently guarantee the integral positioning of the module, and the maintenance efficiency is improved. Therefore, the operation of readjusting the light path is reduced, and the accuracy of instrument measurement results is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas detection technical field, concretely relates to a kind of ultraviolet flue gas analyzers and its detachable gas chamber. BACKGROUND

[0002] At present, with the wide application of ultraviolet differential absorption spectroscopy technology, integrated hot and wet method ultraviolet analyzer becomes one of the mainstream products in the field of fixed pollution flue gas measurement. The integrated hot and wet method ultraviolet analyzer sucks the gas to be measured into the inner tube of the gas chamber after filtering, and the heating device is arranged around the gas chamber. The gas to be measured will not condense into liquid water after entering the inner tube of the gas chamber, so as to reduce the loss of sulfur dioxide and other gases. However, the instrument only filters the gas to be measured and then enters the gas chamber, and the gaseous molecular pollutants are not effectively treated, which is easy to produce ammonium salt or other crystalline substances. These substances are particularly easy to adhere to the optical lens and the inner wall of the gas chamber, affecting the propagation of the light path and thus affecting the measurement result. Therefore, the optical lens and the gas chamber are easy to maintain, which is a key problem to be solved. Some existing analyzers set a sample gas inlet at the front end of the gas chamber and a sample gas outlet and a protective gas inlet at the rear end, and reduce the pollution of the optical element by introducing protective gas at the rear end. However, the protective gas cannot completely block the pollution, and with the extension of the use cycle, the optical element will also be polluted. Once the optical element is polluted, the entire gas chamber needs to be disassembled for maintenance of the optical element, and the light path needs to be adjusted again, and subsequent value calibration is required, which is time-consuming and laborious, and the maintenance difficulty is high. Therefore, a new ultraviolet flue gas analyzer and its gas chamber are needed to improve the maintenance difficulty of the existing instrument. SUMMARY

[0003] In order to overcome the shortcomings of the prior art, the purpose of the utility model is to provide a detachable gas chamber of ultraviolet flue gas analyzer, which can reduce the maintenance difficulty of the instrument and ensure the accuracy of the measurement result of the instrument.

[0004] To solve the above problems, the utility model adopts the following technical scheme: a detachable gas chamber of ultraviolet flue gas analyzer, comprising a gas chamber outer tube, a gas chamber inner tube, an end cover, a reflection assembly, a protective window piece and a collimating mirror assembly; the gas chamber inner tube is detachably installed in the gas chamber outer tube, the reflection assembly is detachably installed at the first end of the gas chamber inner tube, and the protective window piece is detachably installed at the second end of the gas chamber inner tube; the end cover is detachably installed at the first end of the gas chamber outer tube, and the collimating mirror assembly is installed at the second end of the gas chamber outer tube.

[0005] Compared with the prior art, the detachable air chamber has the following beneficial effects: the second end of the air chamber inner pipe is provided with a protective window piece, which can isolate and protect the collimating mirror assembly, avoid pollution of the optical lens, and prolong the period of disassembly and maintenance of the optical lens.

[0006] The detachable air chamber of the ultraviolet flue gas analyzer has the following beneficial effects: the air chamber inner pipe can rotate relative to the air chamber outer pipe.

[0007] The detachable air chamber of the ultraviolet flue gas analyzer has the following beneficial effects: the second end of the air chamber inner pipe is provided with a protective window piece, which can isolate and protect the collimating mirror assembly, avoid pollution of the optical lens, and prolong the period of disassembly and maintenance of the optical lens.

[0008] The detachable air chamber of the ultraviolet flue gas analyzer has the following beneficial effects: the second end of the air chamber inner pipe is provided with a protective window piece, which can isolate and protect the collimating mirror assembly, avoid pollution of the optical lens, and prolong the period of disassembly and maintenance of the optical lens.

[0009] The detachable air chamber of the ultraviolet flue gas analyzer has the following beneficial effects: the second end of the air chamber inner pipe is provided with a protective window piece, which can isolate and protect the collimating mirror assembly, avoid pollution of the optical lens, and prolong the period of disassembly and maintenance of the optical lens.

[0010] The detachable air chamber of the ultraviolet flue gas analyzer has the following beneficial effects: the second end of the air chamber inner pipe is provided with a protective window piece, which can isolate and protect the collimating mirror assembly, avoid pollution of the optical lens, and prolong the period of disassembly and maintenance of the optical lens.

[0011] The detachable air chamber of the ultraviolet flue gas analyzer has the following beneficial effects: the second end of the air chamber inner pipe is provided with a protective window piece, which can isolate and protect the collimating mirror assembly, avoid pollution of the optical lens, and prolong the period of disassembly and maintenance of the optical lens.

[0012] The detachable air chamber of the ultraviolet flue gas analyzer has the following beneficial effects: the second end of the air chamber inner pipe is provided with a protective window piece, which can isolate and protect the collimating mirror assembly, avoid pollution of the optical lens, and prolong the period of disassembly and maintenance of the optical lens.

[0013] The detachable air chamber of the ultraviolet flue gas analyzer has the following beneficial effects: the second end of the air chamber inner pipe is provided with a protective window piece, which can isolate and protect the collimating mirror assembly, avoid pollution of the optical lens, and prolong the period of disassembly and maintenance of the optical lens.

[0014] The utility model will be further explained in detail below in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the whole structure schematic diagram of detachable air chamber of the utility model embodiment;

[0016] Figure 2 It is Figure 1 The sectional view of the structure shown.

[0017] Explanation of reference numerals: 100 air chamber outer pipe, 200 air chamber inner pipe, 210 blowback gas hole, 300 end cover, 400 reflection assembly, 410 corner cone seat, 420 corner cone, 500 protective window piece, 600 collimating mirror assembly, 700 window piece frame, 800 filter element, 900 fixed baffle. DETAILED DESCRIPTION

[0018] The embodiments of the utility model will be described in detail below, referring to Figure 1 And Figure 2 The embodiments of the utility model provide a detachable air chamber of ultraviolet flue gas analyzer, including air chamber outer pipe 100, air chamber inner pipe 200, end cover 300, reflection assembly 400, protective window piece 500 and collimating mirror assembly 600, air chamber inner pipe 200 is detachably installed in air chamber outer pipe 100, reflection assembly 400 is detachably installed at the first end of air chamber inner pipe 200, and protective window piece 500 is detachably installed at the second end of air chamber inner pipe 200, end cover 300 is detachably installed at the first end of air chamber outer pipe 100, and collimating mirror assembly 600 is installed at the second end of air chamber outer pipe 100.

[0019] The detachable air chamber is provided with protective window piece 500 at the second end of air chamber inner pipe 200, can isolate and protect collimating mirror assembly 600, avoids optical lens from being contaminated, prolongs the period of disassembling and maintaining optical lens, the detachable air chamber still detachably installs reflection assembly 400 at the second end of air chamber inner pipe 200, can form an integral module with reflection assembly 400, protective lens and air chamber inner pipe 200, when needing cleaning and maintenance, can take out air chamber inner pipe 200 by disassembling end cover 300, reflection assembly 400 and protective lens can be taken out together, reflection assembly 400 and protective lens can be disassembled at this time, reflection assembly 400, protective lens and air chamber inner pipe 200 are cleaned and maintained, after cleaning, reflection assembly 400 and protective lens are reinstalled in air chamber inner pipe 200, and finally air chamber inner pipe 200 is installed back in air chamber outer pipe 100 again, and end cover 300 is installed, and the modular design can facilitate the quick disassembly, cleaning and maintenance of air chamber, thereby reducing the maintenance difficulty of instrument, and the modular design can also facilitate the overall positioning of module, thereby reducing the operation of readjusting optical path, and ensuring the accuracy of instrument measurement result.

[0020] Further, the gas chamber outer tube 100 can be a one-piece structure, and the gas chamber inner tube 200 is shorter than the one-piece gas chamber outer tube 100. After the end cap 300 is removed, a tool can be inserted into the gas chamber outer tube 100 to pull out the gas chamber inner tube 200. Figure 1 and Figure 2 As shown, the gas chamber outer tube 100 can also be a split structure, which can be connected by multiple tubular structures. When the gas chamber needs to be disassembled for cleaning and maintenance, a portion of the tubular structure at the first end of the gas chamber outer tube 100 can be removed, specifically to the position of the first end of the gas chamber inner tube 200. At this time, the first end of the gas chamber inner tube 200 is exposed, and the gas chamber inner tube 200 can be directly removed. Further, the end cap 300 can be installed at the first end of the gas chamber outer tube 100 by threaded connection, and the gas tightness can be ensured by the O-ring clamped between them.

[0021] Further, the reflection assembly 400 includes a corner pyramid seat 410 and a corner pyramid 420. The corner pyramid seat 410 is used to reflect ultraviolet light and is detachably installed at the first end of the gas chamber inner tube 200. The corner pyramid 420 is detachably installed on the corner pyramid seat 410. A filter element 800 is installed between the first end of the gas chamber inner tube 200 and the end cap 300, which is used to preliminarily filter the sample gas before being sucked into the gas chamber inner tube 200. A fixed baffle 900 is installed between the first end of the gas chamber inner tube 200 and the filter element 800, which is used to adjust and compensate the installation length, so that the filter element 800, the gas chamber inner tube 200, etc. can be fixedly installed in the gas chamber outer tube 100. When cleaning and maintenance is needed, the end cap 300, the filter element 800 and the fixed baffle 900 can be removed, and then the gas chamber inner tube 200 can be pulled out. In order to further reduce the maintenance difficulty and prolong the maintenance period, a back-blowing hole 210 is provided in the inner periphery of the second end of the gas chamber inner tube 200, and the back-blowing hole 210 is distributed along the circumference of the gas chamber inner tube 200, so that the sample gas entering the gas chamber inner tube 200 can be prevented from gathering at the position of the protective window piece 500, which can effectively prevent the protective window piece 500 from being contaminated, thereby avoiding affecting the light path propagation.

[0022] When working, the detachable gas chamber can be installed in the ultraviolet smoke analyzer for use. After the sample gas passes through the filter element 800, it is sucked into the gas chamber inner tube 200. The ultraviolet light emitted by the light source passes through the collimator assembly 600, penetrates the protective window piece 500 into the gas chamber inner tube 200, and reaches the corner pyramid 420 at the first end of the gas chamber inner tube 200. After total reflection by the corner pyramid 420, it penetrates the protective window piece 500 again and enters the collimator assembly 600, and finally converges into the detector.

[0023] Further, refer to Figure 2The second end of the inner tube 200 is provided with a window frame 700, and the protective window sheet 500 is detachably installed in the window frame 700. The protective window sheet 500 can isolate the collimator assembly 600, so that the optical lens is prevented from being polluted, and the ultraviolet light needs to pass through the protective window sheet 500 before entering the inner tube 200. Further, the inner tube 200 can rotate relative to the outer tube 100, and after being disassembled and cleaned and then reassembled, the optical path can be adjusted by rotating the inner tube 200.

[0024] The embodiment of the utility model also provides a kind of ultraviolet flue gas analyzer, including the detachable air chamber described above, it at least has the all beneficial effects that the detachable air chamber of the ultraviolet flue gas analyzer described above can bring.

[0025] It should be noted that, in the description of the utility model, if there is reference to orientation description, such as the orientation or positional relationship indicated by the upper, lower, front, rear, left, right and the like, it is based on the orientation or positional relationship shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and is not indicative or implicit of the device or element indicated must have a particular orientation, be constructed or operated in a particular orientation, and cannot be understood as a limitation on the utility model.

[0026] In the description of the utility model, the meaning of several is one or more, and the meaning of multiple is two or more than two, greater than, less than, more than and the like are not included in the number, and above, below, within and the like are included in the number. If there is a description of first or second and the like, it is only used for the purpose of distinguishing technical features, and cannot be understood as indicative or implicit of relative importance or implicit indication of the number of indicated technical features or implicit indication of the sequence of indicated technical features.

[0027] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installing and connecting should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.

[0028] The above-mentioned embodiments are only preferred embodiments of the utility model, and cannot be used to limit the scope of protection of the utility model, and any non-substantial changes and replacements made by the person skilled in the art on the basis of the utility model all belong to the scope of protection required by the utility model.

Claims

1. A detachable gas chamber for an ultraviolet flue gas analyzer, characterized in that, It includes an outer air duct (100), an inner air duct (200), an end cap (300), a reflector assembly (400), a protective window (500), and a collimating lens assembly (600); The inner air tube (200) is detachably installed inside the outer air tube (100), the reflective component (400) is detachably installed at the first end of the inner air tube (200), and the protective window (500) is detachably installed at the second end of the inner air tube (200). The end cap (300) is detachably mounted on the first end of the outer air duct (100), and the collimating lens assembly (600) is mounted on the second end of the outer air duct (100).

2. The detachable gas chamber of the ultraviolet flue gas analyzer according to claim 1, characterized in that, The inner tube (200) of the air chamber is rotatable relative to the outer tube (100).

3. The detachable gas chamber of the ultraviolet flue gas analyzer according to claim 1, characterized in that, A backflush air hole (210) is provided on the inner circumference of the second end of the air chamber tube (200).

4. The detachable gas chamber of the ultraviolet flue gas analyzer according to claim 3, characterized in that, Multiple backflush vents (210) are distributed circumferentially along the inner tube (200) of the air chamber.

5. The detachable gas chamber of the ultraviolet flue gas analyzer according to claim 1, characterized in that, The second end of the gas chamber tube (200) is provided with a window frame (700), and the protective window (500) is detachably installed in the window frame (700).

6. The detachable gas chamber of the ultraviolet flue gas analyzer according to claim 1, characterized in that, A filter element (800) is installed between the first end of the gas chamber tube (200) and the end cap (300).

7. The detachable gas chamber of the ultraviolet flue gas analyzer according to claim 6, characterized in that, A fixing baffle (900) is installed between the first end of the gas chamber tube (200) and the filter element (800).

8. The detachable gas chamber of the ultraviolet flue gas analyzer according to claim 1, characterized in that, The reflective assembly (400) includes a pyramidal base (410) and a pyramid (420), wherein the pyramidal base (410) is detachably mounted on the first end of the air chamber tube (200), and the pyramid (420) is detachably mounted on the pyramidal base (410).

9. An ultraviolet flue gas analyzer, characterized in that, Includes the removable air chamber as described in any one of claims 1-8.

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