CN106483085B - Light absorption test light pool for photometer - Google Patents
Light absorption test light pool for photometer Download PDFInfo
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- CN106483085B CN106483085B CN201611121634.8A CN201611121634A CN106483085B CN 106483085 B CN106483085 B CN 106483085B CN 201611121634 A CN201611121634 A CN 201611121634A CN 106483085 B CN106483085 B CN 106483085B
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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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- 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
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
A light absorption test light pool for a photometer belongs to the technical field of photometric instruments. The method is characterized in that: including shell (3), be provided with the passageway that shines of test light source at shell (3) middle part, be provided with sample gas test subassembly in shining the passageway, form the gaseous circulation passageway of sample that the test light source passed in sample gas test subassembly, the even and perpendicular setting of passageway that shines with the test light source of thickness of the gaseous circulation passageway of sample, set up the inlet end that communicates simultaneously with the gaseous circulation passageway of sample and the end of giving vent to anger on shell (3). In this a light absorption test light cell for photometer, through setting up the gaseous test assembly of sample, even and the gaseous circulation unit of adjustable through thickness in the gaseous test assembly of sample has formed the gaseous circulation passageway of sample, has accomplished the accurate control to the gaseous thickness of sample to the accurate measurement to the gaseous concentration of sample has been realized.
Description
Technical Field
A light absorption test light pool for a photometer belongs to the technical field of photometric instruments.
Background
Spectrophotometric methods are used to quantitatively analyze a substance by measuring the absorbance of the substance at a specific wavelength or within a certain range of wavelengths. Common test light sources include ultraviolet light, visible light, infrared light, and the like. The photometer generally adopts a light source capable of generating a plurality of wavelengths, a series of light splitting devices are used for generating a light source with a specific wavelength, after the light source passes through a tested sample absorption layer, part of the light source is absorbed, and the light absorption value of a sample can be calculated, so that the concentration of the sample can be measured. While the thickness of the absorbing layer is inversely proportional to the concentration of the sample. In the prior art, the thickness of the absorption layer can not be accurately controlled, so that the data in the sample measurement process is inaccurate, and the concentration of the sample can not be correctly reflected.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the defects of the prior art are overcome, the gas testing component is provided, the gas flowing unit with the uniform and adjustable thickness in the gas testing component forms a flowing channel of the gas of the sample, the accurate control of the gas thickness of the sample is completed, and therefore the light absorption testing optical cell for the photometer for accurately measuring the gas concentration of the sample is realized.
The technical scheme adopted by the invention for solving the technical problems is as follows: this a light absorption test light pond for photometer which characterized in that: including the shell, be provided with the passageway that shines of test light source in the middle part of the shell, be provided with sample gas test subassembly in shining the passageway, sample gas test subassembly includes dismantled and assembled gas flow cell, gas flow cell forms the gaseous circulation passageway of sample in sample gas test subassembly, the test light source passes the gaseous circulation passageway of sample perpendicularly, set up the inlet end that communicates simultaneously with the gaseous circulation passageway of sample and give vent to anger the end on the shell.
Preferably, a cavity is arranged in the housing, a light inlet and a light outlet of the irradiation channel are respectively formed above and below the cavity, the diameters of the light inlet and the light outlet are smaller than the diameter of the cavity, and the sample gas testing component is clamped in the cavity.
Preferably, the sample gas testing assembly further comprises a light filter and a supporting sheet, the light filter, the gas circulation unit and the supporting sheet are sequentially arranged along the irradiation direction of the test light source, an opening is formed in the middle of the gas circulation unit, extending portions extending to the outer sides of the supporting sheet are arranged on two sides of the opening, the gas inlet end and the gas outlet end are respectively communicated with the extending portions, and the opening and the extending portions form a flow channel of the sample gas.
Preferably, the gas circulation unit is a light cell ring, the opening in the middle of the light cell ring comprises a main vent hole arranged in the center of the light cell ring body and auxiliary vent holes forming the extension parts, the auxiliary vent holes are symmetrically arranged on two sides of the main vent hole and are integrated with the main vent hole, and the opening area of the main vent hole is smaller than that of the support part.
Preferably, the support sheet cross-section is an inverted "T" type, and includes a base that is matched with the housing cavity and the support portion, and the support portion is a boss that is protrudingly disposed above the base.
Preferably, the air inlet end and the air outlet end are respectively an air inlet pipe and an air outlet pipe which are arranged on the side part of the shell.
Preferably, the optical filter, the gas flow cell and the support sheet are all circular.
Preferably, the housing is of a detachable design and is provided with a sealing element at the joint.
Compared with the prior art, the invention has the beneficial effects that:
1. in this a light absorption test light cell for photometer, through setting up sample gas test subassembly, even and the gaseous circulation unit of adjustable through thickness in the sample gas test subassembly has formed the gaseous circulation passageway of sample, has accomplished the accurate control to sample gas thickness to the accurate measurement to sample gas concentration has been realized.
2. Only the shell and the sample gas testing assembly consisting of the optical filter, the optical cell ring and the supporting sheet are arranged, the mechanical connection relation is not too complicated, and the structure is extremely simple and the performance is reliable.
3. The thickness of the light cell ring can be accurately controlled by a mature technical means, so that the light cell rings with different thicknesses can be designed aiming at different sample gases, the accuracy of the thickness test of the sample gases is ensured, and the accurate measurement of the concentration of the sample gases is realized.
4. The shell adopts detachable design, so that the sample gas testing component inside the shell is easy to replace, the universality of a product is ensured, and meanwhile, a sealing piece is arranged at the joint of the shell, so that good air tightness is realized.
Drawings
FIG. 1 is a cross-sectional view of a light absorption test cell for use in a photometer.
FIG. 2 is a top view of a light absorption test cell for use in a photometer.
FIG. 3 is a light absorption test cell for a photometer
Wherein: 1. light inlet hole 2, air inlet pipe 3, shell 4, optical filter 5, optical cell ring 501, main vent hole 502, auxiliary vent hole 6, support sheet 7, air outlet pipe 8 and light outlet hole.
Detailed Description
FIGS. 1 to 3 are preferred embodiments of the present invention, and the present invention will be further described with reference to FIGS. 1 to 3.
As shown in fig. 1 to 2, a light absorption test light pool for a photometer comprises a housing 3, wherein a cylindrical cavity with a diameter equal to that of the housing 3 is arranged in the housing 3, and the upper end of the cylindrical cavity penetrates out of the top of the housing 3 and then is communicated with the outside to form a light inlet hole 1 positioned at the top of the housing 3; the lower end of the cylindrical inner cavity penetrates out of the bottom of the shell 3 and then is communicated with the outside to form a light outlet hole 8 located at the bottom of the shell 3, and the diameters of the light inlet hole 1 and the light outlet hole 8 are smaller than that of the cylindrical inner cavity inside the shell 3. An air inlet pipe 2 and an air outlet pipe 7 are arranged on the side portion of the shell 3 in a protruding mode, and the air inlet pipe 2 and the air outlet pipe 7 are symmetrically arranged on two sides of the shell 3 and are communicated with the inner cavity of the shell 3 from two sides.
An optical filter 4, an optical cell ring 5 and a supporting sheet 6 are sequentially arranged in a cylindrical inner cavity of the shell 3 from top to bottom, wherein the optical filter 4 is an optical device for selecting specific wavelengths, so that light passing through the optical filter 4 becomes light with a certain specific wavelength. The outer diameter of the filter 4 is the same as the inner diameter of the cylindrical cavity of the housing 3. The section of the supporting sheet 6 is inverted T-shaped, the supporting sheet comprises a cylindrical base and a boss which is concentrically arranged above the base and is also cylindrical, and the outer diameter of the base of the supporting sheet 6 is the same as the inner diameter of the cylindrical cavity of the shell 3.
As shown in fig. 3, the cell ring 5 disposed between the filter 4 and the support sheet 6 includes a body and a vent hole axially disposed in the middle of the body, the vent hole being defined by a main vent hole 501 and an auxiliary vent hole 502. The main vent hole 501 is circular and concentrically arranged at the center of the body, and the auxiliary vent holes 502 are arranged in two numbers, symmetrically arranged at two ends of the main vent hole 501 and integrated with the main vent hole 501.
The diameter of the main vent hole 501 is smaller than that of the cylindrical boss above the support sheet 6, and the upper part of the support sheet 6 cannot penetrate out of the middle part of the optical cell ring 5, so that the support function of the support sheet 6 on the optical cell ring 5 is realized. The outer ends of the auxiliary air vents 502 at both sides of the main air vent 501 are located outside the cylindrical boss above the support plate 6, and thus a part of the auxiliary air vents 502 at both sides are located outside the cylindrical boss above the support plate 6.
When the optical filter 4, the optical cell ring 5 and the support sheet 6 are installed in the cylindrical cavity of the housing 3, the auxiliary air holes 502 at both sides respectively correspond to the air inlet pipe 2 and the air outlet pipe 7 at both sides of the housing 3. After the filter 4, the optical cell ring 5 and the support sheet 6 are installed in the cylindrical cavity of the housing 3, an annular space is formed between the outer side of the cylindrical boss above the support sheet 6 and the inner wall of the housing 3, and a test space with the same thickness as the optical cell ring 5 is formed above the cylindrical boss above the support sheet 6.
The specific working process and working principle are as follows:
the sample gas enters the inner cavity of the shell 3 through the gas inlet pipe 2 on the shell 3, after the sample gas enters the inner cavity of the shell 3, a part of the annular space outside the supporting sheet 6 is directly output from the gas outlet pipe 7, and the other part of the sample gas enters the main vent hole 501 of the optical cell ring 5 from the auxiliary vent hole 502 of the optical cell ring 5. At this time, the light source enters from the light inlet 1, becomes a test light source with a specific wavelength after being filtered by the optical filter 4, the test light source continues to enter the light cell ring 5 and irradiates into the sample gas, the test light source exits from the light outlet 8 after being partially absorbed by the sample gas, and the concentration of the sample is accurately measured by measuring the light absorption value of the sample gas to the test light source.
In the light absorption test cell for photometers, the housing 3 is designed to be detachable from top to bottom, and is connected by conventional connecting means, such as bolts, threads, and the like, and a sealing member is provided at the joint to achieve good airtightness. Because the thickness of the light cell ring 5 can be accurately controlled by a mature technical means, the light cell ring 5 with different thicknesses can be designed aiming at different sample gases, so that the accuracy of the thickness measurement of the sample gases is ensured, and the accurate measurement of the concentration of the sample gases is realized.
The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention will still fall within the protection scope of the technical solution of the present invention.
Claims (5)
1. A light absorption test cell for a photometer, comprising: the device comprises a shell (3), wherein an irradiation channel of a test light source is arranged in the middle of the shell (3), a sample gas testing component is arranged in the irradiation channel, the sample gas testing component comprises a detachable gas circulation unit, the gas circulation unit forms a sample gas circulation channel in the sample gas testing component, the test light source vertically penetrates through the sample gas circulation channel, and an air inlet end and an air outlet end which are simultaneously communicated with the sample gas circulation channel are arranged on the shell (3); the sample gas testing assembly further comprises a light filter (4) and a supporting sheet (6), the light filter (4), the gas circulation unit and the supporting sheet (6) are sequentially arranged along the irradiation direction of the testing light source, an opening is formed in the middle of the gas circulation unit, extending parts extending to the outer side of the supporting part of the supporting sheet (6) are arranged on two sides of the opening, the gas inlet end and the gas outlet end are respectively communicated with the extending parts, and the opening and the extending parts form a sample gas circulation channel; the gas circulation unit is a light cell ring (5), the opening in the middle of the light cell ring (5) comprises a main vent hole (501) arranged at the center of the light cell ring (5) body and auxiliary vent holes (502) forming the extension parts, the auxiliary vent holes (502) are symmetrically arranged on two sides of the main vent hole (501) and are integrated with the main vent hole (501), and the opening area of the main vent hole (501) is smaller than that of the supporting part; the shell (3) is designed to be detachable from the top and the bottom, and a sealing piece is arranged at the joint.
2. The light absorption test cell for a photometer of claim 1, wherein: the shell (3) is internally provided with a cavity, a light inlet hole (1) and a light outlet hole (8) of the irradiation channel are respectively formed above and below the cavity, the diameters of the light inlet hole (1) and the light outlet hole (8) are smaller than the diameter of the cavity, and the sample gas testing component is clamped in the cavity.
3. A light absorption test cell for a photometer according to claim 1, wherein: the section of the support sheet (6) is inverted T-shaped, and comprises a base matched with the cavity of the shell (3) and a support part, wherein the support part is a boss which is arranged above the base in a protruding mode.
4. The light absorption test cell for a photometer of claim 1, wherein: the air inlet end and the air outlet end are respectively an air inlet pipe (2) and an air outlet pipe (7) which are arranged on the side part of the shell (3).
5. A light absorption test cell for a photometer according to claim 1, wherein: the optical filter (4), the gas circulation unit and the support sheet (6) are all round.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611121634.8A CN106483085B (en) | 2016-12-08 | 2016-12-08 | Light absorption test light pool for photometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611121634.8A CN106483085B (en) | 2016-12-08 | 2016-12-08 | Light absorption test light pool for photometer |
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| Publication Number | Publication Date |
|---|---|
| CN106483085A CN106483085A (en) | 2017-03-08 |
| CN106483085B true CN106483085B (en) | 2022-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611121634.8A Active CN106483085B (en) | 2016-12-08 | 2016-12-08 | Light absorption test light pool for photometer |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107421906A (en) * | 2017-06-13 | 2017-12-01 | 淄博前沿医疗器械有限公司 | A kind of photometer of efficiently measurement concentration of ozone gas |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1271858A (en) * | 1999-03-06 | 2000-11-01 | 痕量分析公司 | Photometric detection system and method for gas |
| CN2574025Y (en) * | 2002-07-16 | 2003-09-17 | 吉林大学 | Absorption cell for spectrophotometry |
| CN201262613Y (en) * | 2008-08-28 | 2009-06-24 | 淄博前沿医疗器械有限公司 | Gas-liquid dual-purpose glass absorbed light pool |
| CN202256143U (en) * | 2011-08-09 | 2012-05-30 | 浙江大合建设工程检测有限公司 | Circular type spectrophotometer |
| CN103278450A (en) * | 2013-05-24 | 2013-09-04 | 徐姗 | Sample room for analyzing liquid absorption spectrum |
| KR101627187B1 (en) * | 2015-03-05 | 2016-06-03 | 한국표준과학연구원 | High sensitivity light absorption cell for small volume sample based on capillary tubing and measurement apparatus comprising it |
| CN205580979U (en) * | 2016-05-06 | 2016-09-14 | 新材料与产业技术北京研究院 | Spectrophotometer equipment |
-
2016
- 2016-12-08 CN CN201611121634.8A patent/CN106483085B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1271858A (en) * | 1999-03-06 | 2000-11-01 | 痕量分析公司 | Photometric detection system and method for gas |
| CN2574025Y (en) * | 2002-07-16 | 2003-09-17 | 吉林大学 | Absorption cell for spectrophotometry |
| CN201262613Y (en) * | 2008-08-28 | 2009-06-24 | 淄博前沿医疗器械有限公司 | Gas-liquid dual-purpose glass absorbed light pool |
| CN202256143U (en) * | 2011-08-09 | 2012-05-30 | 浙江大合建设工程检测有限公司 | Circular type spectrophotometer |
| CN103278450A (en) * | 2013-05-24 | 2013-09-04 | 徐姗 | Sample room for analyzing liquid absorption spectrum |
| KR101627187B1 (en) * | 2015-03-05 | 2016-06-03 | 한국표준과학연구원 | High sensitivity light absorption cell for small volume sample based on capillary tubing and measurement apparatus comprising it |
| CN205580979U (en) * | 2016-05-06 | 2016-09-14 | 新材料与产业技术北京研究院 | Spectrophotometer equipment |
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| CN106483085A (en) | 2017-03-08 |
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Address after: 255086 east side of 1st floor, building a, building 12, Instrument Industrial Park, No. 9009, Qinglongshan Road, high tech Zone, Zibo City, Shandong Province Applicant after: Shandong Qianfeng medical device Co.,Ltd. Address before: 255086 floors 1-3, comprehensive building of advanced manufacturing industrial innovation park, Huabei Road, high tech Industrial Development Zone, Zibo City, Shandong Province Applicant before: ZIBO QIANYAN MEDICAL INSTRUMENT CO.,LTD. |
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