CN210803284U - Chemiluminescence azotometer - Google Patents
Chemiluminescence azotometer Download PDFInfo
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- CN210803284U CN210803284U CN201921774843.1U CN201921774843U CN210803284U CN 210803284 U CN210803284 U CN 210803284U CN 201921774843 U CN201921774843 U CN 201921774843U CN 210803284 U CN210803284 U CN 210803284U
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- chemiluminescence
- photoelectric detector
- azotometer
- reaction chamber
- determination device
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Abstract
The utility model discloses a chemiluminescence azotometer relates to chemistry and detects technical field, and the detection efficiency who has solved current chemiluminescence azotometer method is low, and the noise is big, very big restriction the problem of low-content monitoring. The utility model discloses a main technical scheme does: including chemiluminescence azotometer and treater, the treater with the output of chemiluminescence azotometer is connected, the laminating has the light shield layer on the inner wall of chemiluminescence azotometer, chemiluminescence azotometer includes pan feeding passageway, pyrolysis furnace, desicator, reaction chamber and photoelectric detector, the first end of pyrolysis furnace is connected the pan feeding passageway, the second end of pyrolysis furnace is connected the first end of desicator, the second end of desicator is connected the first end of reaction chamber, the second end of reaction chamber is connected photoelectric detector's first end, photoelectric detector's second end is connected the treater, treater include micro-current amplifier and computer host computer.
Description
Technical Field
The utility model relates to a chemistry detects technical field, especially relates to a chemiluminescence azotometer.
Background
With the deterioration of environmental conditions and the increase of awareness of people about the environment, higher requirements are put on environmental supervision. As an important means for environmental supervision, environmental monitoring instruments are increasingly gaining attention from governments and enterprises. China has promulgated environmental air quality standards and atmospheric pollution sum emission standards for a long time, and more than 6000 environmental air quality monitoring sites are established. The monitoring technology of the independent intellectual property is developed to form the industry of the environment monitoring instrument, and the environment monitoring instrument can replace the import from the perspective, save foreign exchanges, meet the urgent requirements of China on the air quality monitoring instrument at present and drive the development of other related fields; in the long run, the monopoly of developed countries in the technical field can be broken, the competitiveness of China in the international large market of the environmental monitoring instrument is improved, the environmental monitoring capability and the environmental supervision law enforcement modernization level are improved, and the environmental protection career of China is developed.
The traditional chemiluminescence nitrogen detection method adopts a photomultiplier to collect optical radiation signals, and because the collection wavelength is in the range of 700nm-900nm, the existing photomultiplier in the wave band has low detection efficiency and high noise, and greatly restricts low-content monitoring.
Disclosure of Invention
In view of this, the embodiment of the utility model provides a, the main objective is that the detection efficiency who solves current chemiluminescence nitrogen detection method is low, and the noise is big, very big restriction the problem of low-content monitoring. In order to achieve the above object, the utility model mainly provides the following technical scheme:
on the one hand, the embodiment of the utility model provides a chemiluminescence azotometer, this chemiluminescence azotometer includes: the chemiluminescence nitrogen determination device comprises a chemiluminescence nitrogen determination device and a processor, wherein the processor is connected with the output end of the chemiluminescence nitrogen determination device, a shading layer is attached to the inner wall of the chemiluminescence nitrogen determination device, the chemiluminescence nitrogen determination device comprises a feeding channel, a pyrolysis furnace, a dryer, a reaction chamber and a photoelectric detector, the first end of the pyrolysis furnace is connected with the feeding channel, the second end of the pyrolysis furnace is connected with the first end of the dryer, the second end of the dryer is connected with the first end of the reaction chamber, the second end of the reaction chamber is connected with the first end of the photoelectric detector, the second end of the photoelectric detector is connected with the processor, and the processor comprises a micro-current amplifier and a computer host;
the temperature range of the chemiluminescence nitrogen determinator is set to be constant at 40-100 ℃, the photoelectric detector is an indium gallium arsenic photoelectric detector, the central peak detection wavelength of the photoelectric detector is 1300-1700nm, a narrow band filter is arranged on the front side of the light inlet end of the photoelectric detector, and the allowed waveband of the narrow band filter is 1500+/-50 nm.
Optionally, the light shielding layer is made of a black nylon material.
Optionally, a tetrafluoro coating is coated on the inner wall of the chemiluminescent nitrogen determining device, and an antistatic agent is arranged in the tetrafluoro coating.
Optionally, the reaction chamber comprises an ozone reactor, a particulate filter and a temperature detector.
Optionally, a heat dissipation patch is disposed on an outer side surface of the chemiluminescent nitrogen fixing device, and a position of the heat dissipation patch corresponds to a position of the photodetector.
The embodiment of the utility model provides a chemiluminescence azotometer, because under certain condition, the chemiluminescence intensity in the reaction is directly proportional with the yield of nitric oxide, and the volume of nitric oxide is directly proportional with total nitrogen volume in the sample that awaits measuring again, so can survey the total nitrogen content that the sample that awaits measuring gathers through survey chemiluminescence's intensity. The photodetector is set to be an InGaAs photodetector, so that the central peak detection wavelength can be within 1300-1700nm, and the nitrogen detection efficiency can be improved. In addition, the narrow-band filter is arranged on the front side of the light-entering end of the photoelectric detector, and the allowed waveband of the narrow-band filter is 1500+/-50nm, so that the effect of reducing the interference of other substances can be achieved, and the accuracy of the detection result is improved.
Drawings
Fig. 1 is a schematic structural diagram of a chemiluminescent nitrogen determinator according to an embodiment of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention for achieving the intended purpose of the present invention, the following detailed description of the embodiments, structures, features and effects of the chemiluminescent nitrogen determinator according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
Example one
As shown in fig. 1, a first embodiment of the present invention provides a chemiluminescent nitrogen determinator, including:
the chemiluminescence nitrogen determination device comprises a chemiluminescence nitrogen determination device 1 and a processor 2, wherein the processor 2 is connected with the output end of the chemiluminescence nitrogen determination device 1, a shading layer is attached to the inner wall of the chemiluminescence nitrogen determination device 1, the chemiluminescence nitrogen determination device 1 comprises a feeding channel 11, a pyrolysis furnace 12, a dryer 13, a reaction chamber 14 and a photoelectric detector 15, the first end of the pyrolysis furnace 12 is connected with the feeding channel 11, the second end of the pyrolysis furnace 12 is connected with the first end of the dryer 13, the second end of the dryer 13 is connected with the first end of the reaction chamber 14, the second end of the reaction chamber 14 is connected with the first end of the photoelectric detector 15, the second end of the photoelectric detector 15 is connected with the processor 2, and the processor 2 comprises a micro-current amplifier 21 and a computer host 22;
the temperature range of the chemiluminescence nitrogen determinator 1 is set to be constant temperature of 40-100 ℃, the photoelectric detector 15 is an indium gallium arsenic photoelectric detector 15, the central peak detection wavelength of the photoelectric detector 15 is 1300-1700nm, a narrow band filter is arranged on the front side of the light inlet end of the photoelectric detector 15, and the allowed waveband of the narrow band filter is 1500+/-50 nm.
Specifically, the working process of the chemiluminescence azotometer provided by the embodiment is as follows: after entering the chemiluminescent nitrogen determination device 1 through the material inlet channel 11, a sample to be tested is introduced into the pyrolysis furnace 12, at a high temperature of about 1050 ℃, the sample to be tested is completely gasified and subjected to oxidative cracking, nitrides therein are quantitatively converted into Nitric Oxide (NO), reaction gas is carried by carrier gas, magnesium perchlorate can remove moisture therein through the dryer 13 and enters the reaction chamber 14, metastable nitric oxide reacts with O3 gas from the ozone generator in the reaction chamber 14 and is converted into excited NO2, when excited NO2 is transited to a ground state, photons are emitted, an optical signal is detected and received by the photoelectric detector 15 according to a specific wavelength and is processed through the micro current amplifier 21 and the computer mainframe 22 of the processor 2, and the optical signal can be converted into an electrical signal proportional to light intensity. Under certain conditions, the chemiluminescence intensity in the reaction is in direct proportion to the generation amount of the nitric oxide, and the amount of the nitric oxide is in direct proportion to the total nitrogen amount in the sample to be detected, so that the total nitrogen content in the sample to be detected can be detected by measuring the chemiluminescence intensity.
Further, since the total nitrogen chemiluminescence wavelength is between 700nm and 3000nm, and the peak wavelength is 1500nm, we can set the photodetector 15 as an InGaAs photodetector 15 according to this property, and specifically can obtain the photodetector by customization, so that the central peak detection wavelength is between 1300-1700nm, and further can improve the nitrogen detection efficiency.
Furthermore, a narrow band filter is arranged on the front side of the light inlet end of the photoelectric detector 15, the allowed pass band of the narrow band filter is 1500+/-50nm, and the narrow band filter is arranged in front of the detector, so that the effect of reducing the interference of other substances is achieved.
The embodiment of the utility model provides a chemiluminescence azotometer, because under certain condition, the chemiluminescence intensity in the reaction is directly proportional with the formation volume of nitric oxide, and the volume of nitric oxide is directly proportional with total nitrogen volume in the sample that awaits measuring again, so can survey the total nitrogen content that the sample that awaits measuring gathers through survey chemiluminescence's intensity. By setting the photodetector 15 to be the InGaAs indium gallium arsenide photodetector 15, the center peak detection wavelength thereof can be made between 1300-1700nm, and the detection efficiency of nitrogen can be further improved. In addition, a narrow band filter is arranged on the front side of the light-entering end of the photoelectric detector 15, and the allowed pass band of the narrow band filter is 1500+/-50nm, so that the effect of reducing the interference of other substances can be achieved, and the accuracy of the detection result is improved.
The shading layer can be in various specific setting forms, and specifically, the shading layer can be made of black nylon materials to improve the shading effect of the shading layer, so that the shading effect can be reliably ensured, and the detection accuracy of the total nitrogen content in a sample to be detected can be improved.
Specifically, the inner wall of the chemiluminescent nitrogen determinator 1 is coated with a tetrafluoro coating, the tetrafluoro coating is provided with an antistatic agent, and in the process of measuring nitrogen by a chemiluminescent method for petroleum products, if water vapor exists, the detection result is fatally affected, and aiming at the problem, the adopted solution can be as follows: the temperature of the chemiluminescence nitrogen fixing device 1 is set to be constant temperature of 40-100 ℃, and the inner wall of the chemiluminescence nitrogen fixing device 1 is coated with a layer of tetrafluoro coating added with antistatic agent, so that the problem of influence of water vapor on detection junction in the detection process can be solved.
Specifically, the reaction chamber 14 includes an ozone reactor, a particulate filter, and a temperature detector.
Specifically, the outer side surface of the chemiluminescent nitrogen fixing device 1 is provided with a heat dissipation patch, and the position of the heat dissipation patch corresponds to the position of the photoelectric detector 15. Can improve the radiating effect of chemiluminescence azotometer 1, especially can improve the radiating effect of the photoelectric detector 15 part of chemiluminescence azotometer 1, avoid the condition emergence of the photoelectric detector 15 damage that causes because high temperature in the work, can improve photoelectric detector 15's life, improve its measuring accuracy nature. Specifically, the structure of the heat dissipation patch is not particularly limited, and only a good heat dissipation effect is achieved, and naturally, other heat dissipation structures may be adopted for heat dissipation, for example, a fan may be arranged to cool and dissipate heat.
It should be noted that in the description of the present specification, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. A chemiluminescence azotometer, which is characterized by comprising:
the chemiluminescence nitrogen determination device comprises a chemiluminescence nitrogen determination device and a processor, wherein the processor is connected with the output end of the chemiluminescence nitrogen determination device, a shading layer is attached to the inner wall of the chemiluminescence nitrogen determination device, the chemiluminescence nitrogen determination device comprises a feeding channel, a pyrolysis furnace, a dryer, a reaction chamber and a photoelectric detector, the first end of the pyrolysis furnace is connected with the feeding channel, the second end of the pyrolysis furnace is connected with the first end of the dryer, the second end of the dryer is connected with the first end of the reaction chamber, the second end of the reaction chamber is connected with the first end of the photoelectric detector, the second end of the photoelectric detector is connected with the processor, and the processor comprises a micro-current amplifier and a computer host;
the temperature range of the chemiluminescence nitrogen determinator is set to be constant at 40-100 ℃, the photoelectric detector is an indium gallium arsenic photoelectric detector, the central peak detection wavelength of the photoelectric detector is 1300-1700nm, a narrow band filter is arranged on the front side of the light inlet end of the photoelectric detector, and the allowed waveband of the narrow band filter is 1500+/-50 nm.
2. The chemiluminescent azotometer according to claim 1,
the shading layer is made of black nylon materials.
3. The chemiluminescent azotometer according to claim 1,
the inner wall of the chemiluminescence nitrogen determination device is coated with a tetrafluoro coating, and an antistatic agent is arranged in the tetrafluoro coating.
4. The chemiluminescent azotometer according to claim 1,
the reaction chamber comprises an ozone reactor, a particle filter and a temperature detector.
5. The chemiluminescent azotometer according to claim 1, further comprising:
and a heat dissipation patch is arranged on the outer side surface of the chemiluminescence nitrogen fixing device, and the position of the heat dissipation patch corresponds to that of the photoelectric detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921774843.1U CN210803284U (en) | 2019-10-22 | 2019-10-22 | Chemiluminescence azotometer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921774843.1U CN210803284U (en) | 2019-10-22 | 2019-10-22 | Chemiluminescence azotometer |
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| CN210803284U true CN210803284U (en) | 2020-06-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117191706A (en) * | 2023-09-15 | 2023-12-08 | 小仙炖霸州食品有限公司 | Azometer |
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2019
- 2019-10-22 CN CN201921774843.1U patent/CN210803284U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117191706A (en) * | 2023-09-15 | 2023-12-08 | 小仙炖霸州食品有限公司 | Azometer |
| CN117191706B (en) * | 2023-09-15 | 2024-02-13 | 小仙炖霸州食品有限公司 | Azometer |
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