CN109060663B - Gas absorption tank and optical gas analyzer - Google Patents
Gas absorption tank and optical gas analyzer Download PDFInfo
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- CN109060663B CN109060663B CN201810716374.1A CN201810716374A CN109060663B CN 109060663 B CN109060663 B CN 109060663B CN 201810716374 A CN201810716374 A CN 201810716374A CN 109060663 B CN109060663 B CN 109060663B
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 80
- 230000003287 optical effect Effects 0.000 title claims abstract description 19
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 238000004026 adhesive bonding Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 10
- 238000009792 diffusion process Methods 0.000 abstract description 3
- 210000004027 cell Anatomy 0.000 description 23
- 210000005056 cell body Anatomy 0.000 description 9
- 238000012544 monitoring process Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000306 component Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002835 absorbance Methods 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/03—Cuvette constructions
- G01N21/031—Multipass arrangements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
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- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Optical Measuring Cells (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
A gas absorption tank relates to the field of gas detection equipment, and comprises a gas absorption tank body, a first end cover, a gas flow dividing piece, a second end cover and a gas converging piece. The gas absorption tank body is provided with an air inlet end, an air outlet end and an air chamber. The first end cover is connected with the air inlet end, and the first end cover is provided with a first mounting groove and a first through hole. The second end cover is connected with the air outlet end, and is provided with a second mounting groove and a second through hole. The gas splitter is arranged in the first mounting groove and is provided with a first air inlet hole, a first gas circulation groove and a plurality of first air outlet holes which are communicated with each other. The gas converging piece is arranged in the second mounting groove and is provided with a plurality of second air inlets, second gas circulation grooves and second air outlets which are mutually communicated. The gas absorption cell can improve the uniformity and stability of the diffusion of the detected gas in the gas absorption cell, thereby improving the detection precision of the optical gas analyzer.
Description
Technical Field
The invention relates to the field of gas detection equipment, in particular to a gas absorption tank and an optical gas analyzer.
Background
The gas absorption cell is one of the core components of the optical gas analyzer, and mainly comprises a cell body, a gas inlet and outlet, an optical path chamber and the like. The light beam passing through the gas absorption cell is absorbed by the gas in the gas absorption cell, and the gas concentration is measured by calculating absorbance. The gas absorption tank is mainly applied to the fields of air pollution research, environmental monitoring, gas purity analysis, industrial production process monitoring, exhaust gas analysis, petroleum exploration geological logging process monitoring and the like.
In the prior art, the structure of the gas absorption cell mostly does not consider the influence of the uniformity of gas distribution in the gas chamber of the gas absorption cell on the detection result, so that the equivalent optical path is not stable enough, and the measurement is not accurate enough.
Disclosure of Invention
The invention aims to provide a gas absorption cell which can improve the uniformity and stability of the diffusion of a detected gas in the gas absorption cell, thereby improving the detection precision of an optical gas analyzer.
Another object of the present invention is to provide an optical gas analyzer capable of improving uniformity and stability of diffusion of a measured gas in a gas absorption cell, thereby improving detection accuracy of the optical gas analyzer.
Embodiments of the present invention are implemented as follows:
A gas absorption cell includes a gas absorption cell body, a first end cap, a gas flow divider, a second end cap, and a gas flow converging member. The gas absorption tank body is provided with an air inlet end, an air outlet end and an air chamber. The air chamber is communicated with the air inlet end and the air outlet end, and is used for accommodating the tested gas.
The first end cover is connected with the air inlet end of the gas absorption tank body, a first mounting groove is concavely formed in one face of the first end cover, which faces the gas absorption tank body, and a first through hole is formed in a first peripheral wall of the first end cover.
The gas splitter is arranged in the first mounting groove and is provided with a first air inlet hole, a first gas circulation groove and a plurality of first air outlet holes. The first air inlet hole is communicated with the first through hole of the first end cover, the first air inlet hole is communicated with the first air circulation groove, and the first air circulation groove is communicated with a plurality of first air outlet holes.
The second end cover is connected with the air outlet end of the gas absorption tank body, a second mounting groove is concavely formed in one end, close to the gas absorption tank body, of the second end cover, and a second through hole is formed in the second peripheral wall of the second end cover.
The gas converging piece is arranged in the second mounting groove and is provided with a plurality of second air inlets, a second gas circulation groove and second air outlets. The second air inlets are communicated with the second air circulation grooves, the second air circulation grooves are communicated with the second air outlets, and the second air outlets are communicated with the second through holes of the second end cover.
Further, in a preferred embodiment of the present invention, the gas splitter includes a first base and a first sidewall extending from an edge of the first base toward the gas absorption tank body, the first gas inlet hole is disposed on the first sidewall, the plurality of first gas outlet holes are disposed on a first end portion of the first sidewall near the gas absorption tank body, and the first gas circulation groove is concavely disposed on a first inner wall surface of the first base.
Further, in a preferred embodiment of the present invention, the gas converging member includes a second base and a second side wall extending from an edge of the second base toward the gas absorbing tank body, the second gas outlet holes are formed in the second side wall, the plurality of second gas inlet holes are formed in a second end portion of the second side wall, which is close to the gas absorbing tank body, and the second gas circulation groove is concavely formed in a second inner wall surface of the second base.
Optionally, in a preferred embodiment of the present invention, the number of the first air outlet holes is two or more, and the number of the second air inlet holes is two or more.
Optionally, in a preferred embodiment of the present invention, the plurality of first air outlet holes are uniformly distributed on the gas splitting member, and the plurality of second air inlet holes are uniformly distributed on the gas converging member.
Further, in a preferred embodiment of the present invention, the air flow splitter further includes a first mirror and a second mirror, the first mirror is disposed in the first mounting groove, and the first mirror is fixedly connected to a surface of the air flow splitter facing away from the first end cover, the second mirror is disposed in the second mounting groove, and the second mirror is fixedly connected to a surface of the air flow splitter facing away from the second end cover.
Optionally, in a preferred embodiment of the present invention, the fixed connection is bonding.
Further, in a preferred embodiment of the present invention, the light-emitting device further includes a light-emitting port and a light-entering port, the first end cover is provided with a first through hole, the position of the gas splitter corresponding to the first through hole is provided with a through hole of the gas splitter, the position of the first reflector corresponding to the through hole of the gas splitter is provided with a through hole of the first reflector, the first through hole, the through hole of the gas splitter and the through hole of the first reflector are mutually communicated and jointly form the light-entering port, the second end cover is provided with a second through hole, the position of the gas combiner corresponding to the second through hole is provided with a through hole of the gas combiner, the position of the second reflector corresponding to the through hole of the gas splitter is provided with a through hole of the second reflector, and the second through holes, the through holes of the gas combiner and the through holes of the second reflector are mutually communicated and jointly form the light-emitting port.
Further, in a preferred embodiment of the present invention, the air inlet nozzle is installed at the first through hole of the first end cover, and the air outlet nozzle is installed at the second through hole of the second end cover.
An optical gas analyzer comprising the gas absorption cell described above.
The embodiment of the invention has the beneficial effects that: the gas absorption tank provided by the embodiment of the invention is provided with the gas splitting piece and the gas converging piece, the gas splitting piece is provided with a plurality of outlets, and the gas converging piece is provided with a plurality of inlets, so that the detected gas can enter the gas chamber of the gas absorption tank body from a plurality of positions at the same time and can be output from a plurality of positions at the same time, the mixing uniformity of the detected gas in the gas absorption tank can be effectively improved, the accuracy and the stability of optical gas detection are improved, the problem of nonuniform gas mixing is effectively prevented, and the defects in the prior art are overcome.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view showing the structure of a first embodiment of a gas absorption cell of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a partial enlarged view at B in FIG. 1;
FIG. 4 is a schematic view of the gas manifold of FIG. 1;
FIG. 5 is a schematic view of the gas converging member of FIG. 1;
FIG. 6 is a schematic view of the gas splitter and first mirror of FIG. 1;
FIG. 7 is a schematic view showing the structure of a second embodiment of the gas absorption cell of the present invention.
Icon: 1-a gas absorption cell body; 2-a first end cap; 3-a second end cap; 4-gas splitter; 5-a gas converging member; 6-a first mirror; 7-a second mirror; 8-a light inlet; 9-a light outlet; 10-an air inlet nozzle; 11-an air inlet end; 12-an air outlet end; 13-air chambers; 20-an air outlet nozzle; 21-a first mounting groove; 22-a first peripheral wall; 23-a first through hole; 24-a first through hole; 31-a second mounting groove; 32-a second peripheral wall; 33-a second through hole; 34-a second through hole; 41-a first air inlet hole; 42-a first gas flow cell; 43-a first air outlet; 44-a first base; 45-a first sidewall; 46-a first end; 47-a first inner wall surface; 48-through holes of the gas splitter; 51-a second air inlet hole; 52-a second gas flow cell; 53-a second air outlet; 54-a second base; 55-a second sidewall; 56-a second end; 57-a second inner wall surface; 58-through holes of the gas confluence member; 61-a through hole of the first mirror; 71-a through hole of the second mirror; 100-gas absorption cell.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
First embodiment
Referring to fig. 1, the present embodiment provides a gas absorption cell 100, which includes a gas absorption cell body 1, a first end cover 2, a second end cover 3, a gas splitter 4, and a gas combiner 5.
Referring to fig. 1 to 3, the gas absorption cell body 1 has a gas inlet end 11, a gas outlet end 12, and a gas chamber 13, the gas chamber 13 communicating the gas inlet end 11 and the gas outlet end 12, the gas chamber 13 being for accommodating a gas to be measured. The first end cover 2 is in sealing connection with the air inlet end 11 of the gas absorption tank body 1, a first mounting groove 21 is concavely arranged on one surface of the first end cover 2 facing the gas absorption tank body 1, and a first through hole 23 is arranged on a first peripheral wall 22 of the first end cover 2. The second end cover 3 is hermetically connected to the gas outlet end 12 of the gas absorption tank body 1, a second mounting groove 31 is concavely formed on a surface of the second end cover 3 facing the gas absorption tank body 1, and a second through hole 33 is formed on a second peripheral wall 32 of the second end cover 3.
The gas absorbing tank body 1 has a hollow structure, and the hollow cavity is the air chamber 13 of the gas absorbing tank body 1.
The gas splitter 4 is disposed in the first mounting groove 21, and the gas splitter 4 is provided with a first gas inlet hole 41, a first gas circulation groove 42 and a plurality of first gas outlet holes 43, wherein the first gas inlet hole 41 is communicated with the first through hole 23 of the first end cap 2, the first gas inlet hole 41 is communicated with the first gas circulation groove 42, and the first gas circulation groove 42 is communicated with the plurality of first gas outlet holes 43. The gas converging member 5 is disposed in the second mounting groove 31, and the gas converging member 5 is provided with a plurality of second gas inlet holes 51, a second gas flow groove 52 and a second gas outlet hole 53, the plurality of second gas inlet holes 51 are communicated with the second gas flow groove 52, the second gas outlet hole 53 is communicated with the second through hole 33 of the second end cover 3, and the second gas outlet hole 53 is communicated with the second gas flow groove 52.
The gas flow dividing member 4 is fixedly and hermetically connected to the first end cap 2, and the gas flow converging member 5 is fixedly and hermetically connected to the second end cap 3.
The measured gas enters the first air inlet hole 41 through the first through hole 23, enters the air chamber 13 through the plurality of first air outlet holes 43 to be mixed, enters the air chamber from the plurality of second air inlet holes 51, and is collected to the second air outlet holes 53 to be output through the second through hole 33.
Further, referring to fig. 4, the gas splitter 4 includes a first base 44 and a first sidewall 45 extending from an edge of the first base 44, the first gas inlet 41 is disposed on the first sidewall 45, the first gas outlet 43 is disposed on the first sidewall 45 near a first end 46 of the gas absorption cell body 1, and the first gas circulation groove 42 is concavely disposed on a first inner wall surface 47 of the first base 44.
Further, referring to fig. 5, the gas converging member 5 includes a second base 54 and a second side wall 55 extending from an edge of the second base 54, the second gas outlet 53 is provided on the second side wall 55, the second gas inlet 51 is provided on the second side wall 55 near a second end 56 of the gas absorption cell body 1, and the second gas circulation groove 52 is concavely provided on a second inner wall surface 57 of the second base 54.
The first gas flow groove 42 is an annular groove connecting the first gas inlet hole 41 and the first gas outlet hole 43, and is used for connecting the two, and the present invention specifically uses an annular structure, which is shown by way of example, but not limited to an annular structure, and the specific shape, size, and position of the first gas flow groove 42 are not limited. The second annular groove is also for this purpose and will not be described in detail here.
Alternatively, the number of the first air outlet holes 43 is two or more, and the number of the second air inlet holes 51 is two or more.
Alternatively, the first air outlet holes 43 are uniformly distributed along the center of the gas splitter 4, and the second air inlet holes 51 are uniformly distributed along the center of the gas converging member 5.
According to the gas absorption tank 100 provided by the embodiment of the invention, the detected gas can enter the gas chamber 13 of the gas absorption tank body 1 from a plurality of positions at the same time and can be output from a plurality of positions at the same time, so that the mixing uniformity of the detected gas in the gas absorption tank 100 can be improved, and the stability of optical gas detection can be improved. Meanwhile, the first air outlet holes 43 and the second air inlet holes 51 are uniformly distributed, so that uniformity and stability of air circulation during air inlet and outlet can be improved.
Further, referring to fig. 6, the gas flow splitter further includes a first reflecting mirror 6 and a second reflecting mirror 7, the first reflecting mirror 6 is disposed in the first mounting groove 21 of the first end cover 2, and the first reflecting mirror 6 is fixedly connected to a surface of the gas flow splitter 4, which faces away from the first end cover 2, the second reflecting mirror 7 is disposed in the second mounting groove 31 of the second end cover 3, and the second reflecting mirror 7 is fixedly connected to a surface of the gas flow splitter 5, which faces away from the second end cover 3.
Alternatively, the first reflecting mirror 6 is fixedly connected with the gas flow dividing member 4 in an adhesive manner, and the second reflecting mirror 7 is fixedly connected with the gas flow converging member 5 in an adhesive manner.
Further, referring to fig. 1-5, the first end cover 2 is provided with a first through hole 24, the position of the gas splitter 4 corresponding to the first through hole 24 is provided with a through hole 48 of the gas splitter, the position of the first reflector 6 corresponding to the through hole 48 of the gas splitter is provided with a through hole 61 of the first reflector, the first through hole 24, the through hole 48 of the gas splitter and the through hole 61 of the first reflector are mutually communicated and jointly form an optical inlet 8, the second end cover 3 is provided with a second through hole 34, the position of the gas combiner 5 corresponding to the second through hole 34 is provided with a through hole 58 of the gas combiner, the position of the second reflector 7 corresponding to the through hole 58 of the gas combiner is provided with a through hole 71 of the second reflector, and the second through hole 34, the through hole 58 of the gas combiner and the through hole 71 of the second reflector are mutually communicated and jointly form an optical outlet 9.
It should be noted that, the light inlet 8 is used for allowing the light beam to pass through, and a transparent window is disposed at the light inlet 8 to allow the light beam to pass through, and meanwhile, the gas to be measured in the gas chamber 13 in the gas absorption cell 100 can be prevented from leaking from the light inlet 8. The light outlet 9 is used for emitting light beams, and is also provided with a transparent window sheet which can transmit the light beams and can prevent the tested gas in the gas chamber 13 in the gas absorption tank 100 from leaking from the light outlet 9.
The gas absorption cell 100 operates on the principle that: the gas to be measured enters from the first through hole 23 of the first end cover 2, then enters into the gas splitter 4, enters from the first air inlet hole 41 of the gas splitter 4, reaches the first gas circulation groove 42, then is output from the first air outlet holes 43 distributed circumferentially, reaches the air chamber 13 of the gas absorption tank body 1, is uniformly mixed, reaches the gas converging piece 5, enters from the second air inlet holes 51 distributed circumferentially, enters the second air outlet holes 53 through the second gas circulation groove 52, then enters into the second end cover 3, and finally is output from the second through hole 33. According to the invention, the detected gas enters the gas chamber 13 of the gas absorption tank body 1 from a plurality of positions at the same time and is output from a plurality of positions at the same time, so that the mixing uniformity of the detected gas in the gas chamber 13 of the gas absorption tank body 1 can be improved, and the stability and the accuracy of optical gas detection can be improved.
Second embodiment
Referring to fig. 7, the present embodiment provides a gas absorption cell 100, which includes a gas absorption cell body 1, a first end cap 2, a second end cap 3, a gas splitter 4, a gas converging member 5, a first reflecting mirror 6, a second reflecting mirror 7, a light inlet 8, a light outlet 9, a light inlet nozzle 10 and a light outlet nozzle 20. Wherein the air inlet nozzle 10 is installed at the first through hole 23 of the first end cover 2, and the air outlet nozzle 20 is installed at the second through hole 33 of the second end cover 3. The gas absorption cell body 1, the first end cover 2, the second end cover 3, the gas splitting member 4, the gas converging member 5, the first reflecting mirror 6, the second reflecting mirror 7, the light inlet 8, the light outlet 9 are consistent with those in the above embodiments, and the structure and the beneficial effects thereof have been specifically described in the above embodiments, so that the description thereof will be omitted herein.
The air inlet nozzle 10 has an air inlet channel, the air inlet nozzle 10 is connected to the first end cap 2, and the air inlet channel of the air inlet nozzle 10 is communicated with the first through hole 23 of the first end cap 2. The air outlet nozzle 20 is provided with an air outlet channel, the air outlet nozzle 20 is connected with the second end cover 3, and the air outlet channel of the air outlet nozzle 20 is communicated with the second through hole 33 of the second end cover 3.
It should be noted that, the air inlet nozzle 10 and the air outlet nozzle 20 are provided for air inlet and outlet, and the shape is not limited as long as the purpose can be achieved.
The gas absorption cell 100 operates on the principle that: the gas to be tested enters from the gas inlet nozzle 10, passes through the gas inlet channel of the gas inlet nozzle 10, enters from the first through hole 23 of the first end cover 2, enters into the gas splitter 4, enters from the first gas inlet hole 41 of the gas splitter 4, reaches the first gas circulation groove 42, then outputs from the first gas outlet holes 43 which are uniformly distributed, reaches the gas chamber 13 of the gas absorption tank body 1, uniformly mixes, reaches the gas converging piece 5, enters from the second gas inlet holes 51 which are uniformly distributed, enters the second gas outlet holes 53 through the second gas circulation groove 52, enters into the second end cover 3, and outputs through the second through hole 33 to the gas outlet nozzle 20, and finally outputs from the gas outlet channel of the gas outlet nozzle 20. According to the invention, the detected gas enters the gas chamber 13 of the gas absorption tank body 1 from a plurality of positions at the same time and is output from a plurality of positions at the same time, so that the mixing uniformity of the detected gas in the gas chamber 13 of the gas absorption tank body 1 can be improved, and the stability and the accuracy of optical gas detection can be improved.
The present invention also provides an optical gas analyzer including any of the gas absorption cells 100 described above, having the same structure and advantageous effects as the gas absorption cell 100 in the foregoing embodiments. Since the structure and advantageous effects of the gas absorption cell 100 have been described in detail in the foregoing embodiments, they are not described in detail herein.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A gas absorption cell, the gas absorption cell comprising:
The gas absorption tank body is provided with a gas inlet end, a gas outlet end and a gas chamber, wherein the gas chamber is communicated with the gas inlet end and the gas outlet end and is used for accommodating tested gas;
The first end cover is connected with the air inlet end of the gas absorption tank body, a first mounting groove is concavely formed in one surface of the first end cover, facing the gas absorption tank body, of the first end cover, and a first through hole is formed in a first peripheral wall of the first end cover;
The gas flow dividing piece is arranged in the first mounting groove and is provided with a first gas inlet hole, a first gas flow groove and a plurality of first gas outlet holes, the first gas inlet hole is communicated with the first through hole of the first end cover, the first gas inlet hole is communicated with the first gas flow groove, and the first gas flow groove is communicated with the plurality of first gas outlet holes;
The second end cover is connected with the air outlet end of the gas absorption tank body, a second mounting groove is concavely formed in one end, close to the gas absorption tank body, of the second end cover, and a second through hole is formed in a second peripheral wall of the second end cover; and
The gas converging piece is arranged in the second mounting groove, and is provided with a plurality of second air inlets, a second gas circulation groove and a second air outlet, the second air inlets are communicated with the second gas circulation groove, the second gas circulation groove is communicated with the second air outlet, and the second air outlet is communicated with the second through hole of the second end cover;
The gas dividing piece comprises a first base and a first side wall extending from the edge of the first base towards the gas absorption tank body, the first gas inlet holes are formed in the first side wall, the plurality of first gas outlet holes are formed in the first end portion, close to the gas absorption tank body, of the first side wall, and the first gas circulation groove is concavely formed in the first inner wall surface of the first base;
The gas converging piece comprises a second base and a second side wall extending from the edge of the second base towards the gas absorption tank body, the second air outlet holes are formed in the second side wall, the plurality of second air inlet holes are formed in the second end portion, close to the gas absorption tank body, of the second side wall, and the second gas circulating groove is concavely formed in the second inner wall surface of the second base.
2. The gas absorption cell of claim 1, wherein the number of the first gas outlet holes is two or more, and the number of the second gas inlet holes is two or more.
3. The gas absorption cell of claim 1, wherein the plurality of first gas outlet holes are uniformly distributed on the gas dividing member, and the plurality of second gas inlet holes are uniformly distributed on the gas converging member.
4. The gas absorption cell of claim 1, further comprising a first mirror and a second mirror, wherein the first mirror is disposed within the first mounting groove and is fixedly connected to a side of the gas flow divider that faces away from the first end cap, the second mirror is disposed within the second mounting groove and is fixedly connected to a side of the gas flow divider that faces away from the second end cap.
5. The gas absorption cell according to claim 4, wherein the fixed connection is adhesive bonding.
6. The gas absorption cell according to claim 4, further comprising a light inlet and a light outlet, wherein a first through hole is formed in the first end cover, a through hole of the gas splitter is formed in a position of the gas splitter corresponding to the first through hole, a through hole of the first reflector is formed in a position of the first reflector corresponding to the through hole of the gas splitter, the first through hole, the through hole of the gas splitter and the through hole of the first reflector are communicated with each other and jointly form the light inlet, a second through hole is formed in the second end cover, a through hole of the gas combiner is formed in a position of the gas combiner corresponding to the second through hole, a through hole of the second reflector is formed in a position of the second reflector corresponding to the through hole of the gas combiner, and the second through hole, the through hole of the gas combiner and the through hole of the second reflector are communicated with each other and jointly form the light outlet.
7. The gas absorption cell of claim 1, further comprising a gas inlet nozzle mounted at the first through hole of the first end cap and a gas outlet nozzle mounted at the second through hole of the second end cap.
8. An optical gas analyzer comprising the gas absorption cell according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810716374.1A CN109060663B (en) | 2018-07-03 | 2018-07-03 | Gas absorption tank and optical gas analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810716374.1A CN109060663B (en) | 2018-07-03 | 2018-07-03 | Gas absorption tank and optical gas analyzer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109060663A CN109060663A (en) | 2018-12-21 |
| CN109060663B true CN109060663B (en) | 2024-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810716374.1A Active CN109060663B (en) | 2018-07-03 | 2018-07-03 | Gas absorption tank and optical gas analyzer |
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| CN107064024A (en) * | 2016-12-14 | 2017-08-18 | 山东大学 | It is a kind of to improve the air chamber of accuracy of detection when spectral absorption method measures gas concentration |
| CN207282513U (en) * | 2017-09-19 | 2018-04-27 | 浙江绿烨科技股份有限公司 | A kind of component for improving diffusion uniformity |
| CN208432527U (en) * | 2018-07-03 | 2019-01-25 | 青岛海纳光电环保有限公司 | A kind of gas absorption cell and optical gas analyzer |
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| TWM341702U (en) * | 2008-03-14 | 2008-10-01 | Bay Zu Prec Co Ltd | Gas feeding apparatus of vacuum sputtering equipment |
| TWM445758U (en) * | 2012-04-16 | 2013-01-21 | Bay Zu Prec Co Ltd | Gas diffusion device of vacuum equipment |
| CN202585362U (en) * | 2012-05-08 | 2012-12-05 | 北儒精密股份有限公司 | Gas diffusion device of vacuum equipment |
| CN202830231U (en) * | 2012-09-11 | 2013-03-27 | 江阴鑫辉太阳能有限公司 | Flowing gas stabilizing device of crystalline silicon solar cell diffusion furnace |
| CN107064024A (en) * | 2016-12-14 | 2017-08-18 | 山东大学 | It is a kind of to improve the air chamber of accuracy of detection when spectral absorption method measures gas concentration |
| CN106770026A (en) * | 2017-01-23 | 2017-05-31 | 章欣 | Optical gas absorbance pond and optical gas sensor |
| CN207282513U (en) * | 2017-09-19 | 2018-04-27 | 浙江绿烨科技股份有限公司 | A kind of component for improving diffusion uniformity |
| CN208432527U (en) * | 2018-07-03 | 2019-01-25 | 青岛海纳光电环保有限公司 | A kind of gas absorption cell and optical gas analyzer |
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