CN203479697U - Non-dispersive infrared detector - Google Patents
Non-dispersive infrared detector Download PDFInfo
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- CN203479697U CN203479697U CN201320298729.2U CN201320298729U CN203479697U CN 203479697 U CN203479697 U CN 203479697U CN 201320298729 U CN201320298729 U CN 201320298729U CN 203479697 U CN203479697 U CN 203479697U
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- 238000001514 detection method Methods 0.000 claims abstract description 84
- 238000007789 sealing Methods 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 9
- 239000000428 dust Substances 0.000 abstract description 8
- 239000006185 dispersion Substances 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 50
- 238000004458 analytical method Methods 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000002835 absorbance Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000000921 elemental analysis Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides a non-dispersive infrared detector, comprising a transmitter module, a detection chamber and a receiving module, wherein the transmitter module is used for transmitting an infrared ray; the detection chamber receives a detected gas; the receiving module reflects a test result; the transmitter module is tightly connected with one end of the detection chamber detachably, and/or the receiving module is tightly connected with the other end of the detection chamber detachably. The detection chamber is detachably connected with the transmitter module, and/or connected with the receiving module, the detection chamber can be separated from the transmitter module and/or separated from the receiving module if dust exists in the detection chamber in the using process, and then the detection chamber is cleaned, so that the target of cleaning inside the detection chamber is achieved, the dispersion effect on an infrared ray caused by the dust is avoided, and the measurement accuracy is ensured.
Description
Technical Field
The utility model relates to an elemental analysis technical field, in particular to non-dispersive infrared detector.
Background
The elemental analysis is an analysis for identifying elements present in an organic substance and determining the content thereof, and the types and methods of elements to be tested are various at present. The element analysis system for five elements of carbon, hydrogen, oxygen, nitrogen and sulfur in a test substance is the most common, and the element analysis system adopts an infrared method, a thermal conductivity method or an infrared-thermal conductivity method to measure the elements at present. The hydrogen element is measured by the product water after combustion in the test process, the carbon element is measured by the carbon dioxide after combustion, and the measurement process is realized by a non-dispersive infrared sensor.
The current element analysis system takes an infrared method as an example, and the infrared method takes the lambert-beer law as a basis to measure elements. The lambert-beer law mathematical expression is a = lg (1/T) = Kbc, where a is absorbance; t is the transmittance, which is the intensity of incident light on the transmitted light intensity ratio; k is the molar absorption coefficient, which is related to the nature of the absorbing species and the wavelength λ of the incident light; c is the concentration of the light absorbing species; b is the thickness of the absorbing layer. The physical meaning of lambert-beer's law is that when a beam of parallel monochromatic light passes perpendicularly through a uniform, non-scattering, light-absorbing substance, the absorbance a is proportional to the concentration c of the light-absorbing substance and the thickness b of the absorbing layer.
Currently, non-dispersive infrared detectors include: the gas detection device comprises an emitting module for emitting infrared rays, a detection chamber for receiving detected gas and a receiving module for reflecting detection results. In the prior art, in order to avoid the leakage of gas in the detection chamber or the entrance of external gas into the detection chamber, the non-dispersive infrared detector is usually configured as an integrated structure to ensure the tightness of the detector.
However, in actual operation, dust is inevitably brought in by the gas entering the infrared detector, so that after long-term use, dust adheres to the detector of the non-dispersive infrared detector, thereby causing dispersion of infrared light, and the infrared tester is of an integrated structure, so that the detection chamber is difficult to clean, and the test result is inaccurate.
Therefore, how to provide a non-dispersive infrared detector, which is easy to clean to improve the accuracy of the test result, is a technical problem that needs to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a non-dispersive infrared detector, the washing of being convenient for to improve the accuracy of test result.
In order to solve the technical problem, the utility model provides a following technical scheme:
a non-dispersive infrared detector comprising: the device comprises an emitting module for emitting infrared rays, a detecting chamber for receiving detected gas and a receiving module for reacting a detection result, wherein the emitting module is detachably and hermetically connected with one end of the detecting chamber,
and/or the receiving module is detachably and hermetically connected with the other end of the detection chamber.
Preferably, in the above detector, the transmitting module is detachably and hermetically connected to one end of the detection chamber, and the receiving module is detachably and hermetically connected to the other end of the detection chamber.
Preferably, in the detector, the emission module is connected to one end of the detection chamber by a first screw and sealed by a first sealing member;
the receiving module is connected with the other end of the detection chamber through a second screw and sealed through a second sealing piece.
Preferably, in the above detector, the transmitting module includes:
an infrared light source for emitting infrared rays;
the light source circuit board is electrically connected with the infrared light source;
the infrared detection device is arranged at one end of the detection chamber and can enable infrared rays to enter an infrared emission window of the detection chamber.
Preferably, the detector further includes a heat dissipation assembly for dissipating heat of the infrared light source.
Preferably, in the above detector, the detection chamber includes:
the gas detection device comprises a detection chamber main body, wherein the detection chamber main body is provided with a gas inlet joint, a gas channel and a gas outlet joint for the gas to be detected to enter;
the detection chamber comprises a detection chamber body, a gold-plated gas chamber arranged in the detection chamber body, an infrared emission window arranged at one end of the gold-plated gas chamber, a gas channel communicated with the gold-plated gas chamber, and a gas outlet joint communicated with the gold-plated gas chamber.
Preferably, in the above detector, the receiving module includes:
the receiving infrared window is arranged at the other end of the gold-plated gas chamber;
the light-gathering cone is connected with the infrared receiving window and used for collecting infrared rays;
the sensor is connected with the cone top of the light gathering cone;
and a signal circuit board for measuring sensor information.
Preferably, the detector further includes a connection board circuit board electrically connected to the signal circuit board and the light source circuit board.
The utility model also provides a non-dispersive infrared detector, include: the device comprises an emitting module for emitting infrared rays, a detection chamber for receiving detected gas and a receiving module for reacting a test result, wherein the emitting module is detachably and hermetically connected with one end of the detection chamber, and/or the receiving module is detachably and hermetically connected with the other end of the detection chamber. Through can dismantling the detection room and the emission module links to each other, and/or can dismantle with receiving module and link to each other, in the use, if there is the accessible behind the dust in the detection room to detect room and emission module separation and/or with receiving module separation, then wash the detection room to reach the indoor clean purpose of detection, avoid the dust to the dispersion influence of infrared ray, guarantee measuring accuracy.
Drawings
Fig. 1 is a schematic structural diagram of a non-dispersive infrared detector according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of a non-dispersive infrared detector according to an embodiment of the present invention.
Wherein,
the device comprises a heat dissipation assembly 1, a transmitting module 2, an air inlet joint 3, an air outlet joint 4, a detection chamber 5, a receiving module 6, a sensor 7, a light gathering cone 8, a second sealing element 9, an infrared receiving window 11, a sealing ring 12, a gas channel 13, a gold-plated gas chamber 14, a first sealing element 15, an infrared transmitting window 16, an infrared light source 17, a light source circuit board 18, a connecting board circuit board 19 and a signal circuit board 20.
Detailed Description
The utility model discloses the core is that a non-dispersive infrared detector is provided, is convenient for wash to improve test result's accuracy.
In order to make the technical field of the present invention better understand, the present invention is further described in detail with reference to the accompanying drawings and embodiments.
Referring to fig. 1, an embodiment of the present invention provides a non-dispersive infrared detector, including: the device comprises an emitting module 2 for emitting infrared rays, a detection chamber 5 for receiving detected gas and a receiving module 6 for reacting a test result, wherein the emitting module 2 is detachably connected with one end of the detection chamber 5 in a sealing way, and/or the receiving module 6 is detachably connected with the other end of the detection chamber 5 in a sealing way.
Through can dismantling detection room 5 and emission module 2 and link to each other, and/or can dismantle with receiving module 6 and link to each other, in the use, if there is the accessible behind the dust in the detection room 5 with detection room 5 and emission module 2 separation and/or with receiving module 6 separation, then wash detection room 5 to reach the clean purpose in the detection room 5, avoid the dust to the dispersion influence of infrared ray, guarantee measuring accuracy.
Because the detection chamber 5 has a certain length, in order to further facilitate the user to clean the detection chamber 5, in this embodiment, the emission module 2 is detachably and hermetically connected with one end of the detection chamber 5, and the other end of the detection chamber 5 is detachably and hermetically connected with the receiving module 6. When the detection chamber 5 needs to be cleaned, both the transmitting module 2 and the receiving module 6 can be separated from the detection chamber 5, and then the detection chamber 5 can be cleaned. It will be appreciated by those skilled in the art that either one of the transmitter module 2 and the receiver module 6 may also be detachable from the detection chamber 5 in order to ensure the hermeticity of the detection chamber 5.
Specifically, the emission module 2 is connected to one end of the detection chamber 5 by a first screw (not shown), and is sealed by a first sealing member 15; the receiving module 6 is connected to the other end of the detection chamber 5 by a second screw (not shown) and sealed by a second sealing member 9. The embodiment only provides a specific connection mode, and the connection can be realized through other connecting pieces in practical operation. Preferably, the first seal 15 and the second seal 9 are both sealing rings.
In a further embodiment, the transmitting module 2 specifically includes: an infrared light source 17, a light source circuit board 18 and an emission infrared window 16.
The infrared light source 17 is electrically connected to the light source circuit board 18, and when the infrared light source 17 is used, the light source circuit board 18 supplies power to the infrared light source 17, so that the infrared light source 17 emits infrared rays.
Is arranged at one end of the detection chamber 5 and is capable of making infrared rays enter an infrared emission window 16 of the detection chamber 5. In order to complete the detection of the gas to be detected by the infrared ray, it is necessary to introduce the infrared ray generated by the infrared light source 17 into the detection chamber 5 so as to detect the gas to be detected in the detection chamber 5 without dispersion.
Since the infrared light source 17 generates a certain amount of heat during operation, in order to ensure the normal use of the detector, a further embodiment further includes a heat dissipation assembly 1 for dissipating heat from the infrared light source 17. In actual use, the heat dissipation assembly 1 may be a heat exchanger device. The heat sink assembly 1 is provided to dissipate heat from the infrared light source 17, and may be any heat dissipating structure that can achieve the above object.
The detection chamber 5 disclosed in the present embodiment includes: a detection chamber body (not shown) and a gold-plated gas chamber 14 opened in the detection chamber body.
The detection chamber body is provided with an air inlet joint 3 for the gas to be detected to enter, a gas channel 13 to be detected and an air outlet joint 4, the gas channel 13 to be detected is communicated with the gold-plated gas chamber 14, and the air outlet joint 4 is communicated with the gold-plated gas chamber 14. The gas to be detected enters the gas channel 13 through the gas inlet joint 3 and enters the gold-plated gas chamber 14 along the gas channel 13, the gas to be detected in the gold-plated gas chamber 14 can be detected by infrared rays due to the fact that the gas to be detected in the gold-plated gas chamber 14 can be irradiated by infrared rays, and after the detection is finished, the gas to be detected is discharged out of the gold-plated gas chamber 14 through the gas outlet joint 4. Furthermore, the gold-plated air chamber 14 can be installed in a containing cavity formed in the detection chamber main body, and in order to prevent the gold-plated air chamber 14 from shaking in the containing cavity, a sealing ring is preferably arranged between the gold-plated air chamber and the containing cavity, and the sealing ring 12 is sleeved on the outer surface of the gold-plated air chamber 14. In this embodiment, the number of the seal rings 12 is not limited.
The gold-plated gas chamber 14 provided in the present embodiment is opened in the detection chamber main body, i.e. the detection chamber main body forms the gold-plated gas chamber 14, preferably, the cross section of the gold-plated gas chamber 14 is circular, and the infrared emission window 16 is arranged at one end of the gold-plated gas chamber 14, i.e. the infrared emission window 16 is arranged between the gold-plated gas chamber 14 and the infrared light source 17.
In a further embodiment, the receiving module 6 comprises: a receiving infrared window 11, a light-gathering cone 8, a sensor 7 and a signal circuit board 20.
Wherein, the receiving infrared window 11 is arranged at the other end of the gold-plated gas chamber 14, preferably, the ports at the two ends of the gold-plated gas chamber 14 are respectively shielded by the transmitting infrared window 16 and the receiving infrared window 11. The infrared transmitting window 16 and the infrared receiving window 11 are made of a material that can transmit infrared rays.
In view of the above problem, the present embodiment provides a light-gathering cone 8 connected to the infrared receiving window 11 for collecting infrared rays, and preferably, the larger diameter end of the light-gathering cone 8 is connected to the infrared receiving window 11, and the cone top of the light-gathering cone 8 is connected to the sensor 7. So as to ensure that the infrared rays are collected and converged under the action of the light converging cone 8.
The sensor 7 is used for receiving the infrared rays collected by the light-gathering cone 8, the collected infrared rays are processed into electric signals and then are transmitted to the signal circuit board 20 used for measuring the information of the sensor 7, and the concentration of the components of the gas to be detected can be indirectly measured according to the information displayed by the signal circuit board 20, so that the detection is finished.
In practical production, the signal circuit board 20 and the light source circuit board 18 can be electrically connected with the connecting board circuit board 19, so that the light source circuit board 18 and the signal circuit board 20 can be overhauled through the connecting board circuit board 19.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A non-dispersive infrared detector comprising: an emitting module for emitting infrared rays, a detecting chamber (5) for receiving detected gas and a receiving module (6) for reacting the detection result, characterized in that the emitting module (2) is detachably and hermetically connected with one end of the detecting chamber (5),
and/or the receiving module (6) is detachably and hermetically connected with the other end of the detection chamber (5).
2. The detector according to claim 1, characterized in that the emission module (2) is connected to one end of the detection chamber (5) by a first screw and sealed by a first seal (15);
the receiving module (6) is connected with the other end of the detection chamber (5) through a second screw and sealed through a second sealing piece (9).
3. The detector according to claim 1, characterized in that the transmission module (2) comprises:
an infrared light source (17) for emitting infrared rays;
a light source circuit board (18) electrically connected to the infrared light source (17);
an infrared emission window (16) which is arranged at one end of the detection chamber (5) and can enable infrared rays to enter the detection chamber (5).
4. A detector according to claim 3, further comprising a heat sink assembly (1) for dissipating heat from the infrared light source (17).
5. A detector according to claim 3, characterized in that the detection chamber (5) comprises:
the gas detection device comprises a detection chamber main body, wherein the detection chamber main body is provided with a gas inlet joint (3), a gas channel (13) and a gas outlet joint (4) for the gas to be detected to enter;
the detection chamber comprises a gold-plated gas chamber (14) arranged in the detection chamber body, the infrared emission window (16) is arranged at one end of the gold-plated gas chamber (14), the gas channel (13) is communicated with the gold-plated gas chamber (14), and the gas outlet joint (4) is communicated with the gold-plated gas chamber (14).
6. The detector according to claim 5, characterized in that the receiving module (6) comprises:
an infrared receiving window (11) arranged at the other end of the gold-plated gas chamber (14);
a light gathering cone (8) connected with the infrared receiving window (11) and used for collecting infrared rays;
a sensor (7) connected with the cone top of the light gathering cone (8);
a signal circuit board (20) for measuring the information of the sensor (7).
7. The detector of claim 6, further comprising a connection board circuit board (19) electrically connected with the signal circuit board (20) and the light source circuit board (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320298729.2U CN203479697U (en) | 2013-05-28 | 2013-05-28 | Non-dispersive infrared detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320298729.2U CN203479697U (en) | 2013-05-28 | 2013-05-28 | Non-dispersive infrared detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203479697U true CN203479697U (en) | 2014-03-12 |
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| CN201320298729.2U Expired - Lifetime CN203479697U (en) | 2013-05-28 | 2013-05-28 | Non-dispersive infrared detector |
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| Country | Link |
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| CN (1) | CN203479697U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105486652A (en) * | 2015-10-23 | 2016-04-13 | 成都市亿泰科技有限公司 | Photonic-crystal-based controllable non-dispersive infrared gas sensor |
| CN105486654A (en) * | 2015-10-23 | 2016-04-13 | 成都市亿泰科技有限公司 | Metamaterial-based adjustable non-dispersive infrared gas sensor |
| CN107367478A (en) * | 2017-07-19 | 2017-11-21 | 常州合众电气有限公司 | Non-dispersive infrared optical sulfur hexafluoride gas concentration sensor |
| CN107991236A (en) * | 2017-12-04 | 2018-05-04 | 华北电力大学（保定） | Microbial aerosol detection device |
| CN109682770A (en) * | 2018-12-29 | 2019-04-26 | 中国船舶重工集团公司第七一八研究所 | A kind of multicomponent Freon gas infrared detecting device |
| CN109883978A (en) * | 2019-03-26 | 2019-06-14 | 翼捷安全设备（昆山）有限公司 | Multiple light courcess light cone array gas sensor and detection method |
| CN111141695A (en) * | 2019-12-24 | 2020-05-12 | 中国船舶重工集团公司第七一八研究所 | Non-dispersive infrared multi-component Freon gas detection system |
| CN113029996A (en) * | 2021-03-31 | 2021-06-25 | 山东大学 | Hydrogen purity online detection instrument and use method and application thereof |
-
2013
- 2013-05-28 CN CN201320298729.2U patent/CN203479697U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105486652A (en) * | 2015-10-23 | 2016-04-13 | 成都市亿泰科技有限公司 | Photonic-crystal-based controllable non-dispersive infrared gas sensor |
| CN105486654A (en) * | 2015-10-23 | 2016-04-13 | 成都市亿泰科技有限公司 | Metamaterial-based adjustable non-dispersive infrared gas sensor |
| CN105486654B (en) * | 2015-10-23 | 2019-02-15 | 深圳市华中航技术检测有限公司 | Adjustable non-dispersive infrared gas sensor based on Meta Materials |
| CN107367478A (en) * | 2017-07-19 | 2017-11-21 | 常州合众电气有限公司 | Non-dispersive infrared optical sulfur hexafluoride gas concentration sensor |
| CN107991236A (en) * | 2017-12-04 | 2018-05-04 | 华北电力大学（保定） | Microbial aerosol detection device |
| CN107991236B (en) * | 2017-12-04 | 2020-08-25 | 华北电力大学（保定） | Microbial aerosol detection device |
| CN109682770A (en) * | 2018-12-29 | 2019-04-26 | 中国船舶重工集团公司第七一八研究所 | A kind of multicomponent Freon gas infrared detecting device |
| CN109682770B (en) * | 2018-12-29 | 2024-04-09 | 中国船舶重工集团公司第七一八研究所 | Multicomponent freon gas infrared detection device |
| CN109883978A (en) * | 2019-03-26 | 2019-06-14 | 翼捷安全设备（昆山）有限公司 | Multiple light courcess light cone array gas sensor and detection method |
| CN111141695A (en) * | 2019-12-24 | 2020-05-12 | 中国船舶重工集团公司第七一八研究所 | Non-dispersive infrared multi-component Freon gas detection system |
| CN113029996A (en) * | 2021-03-31 | 2021-06-25 | 山东大学 | Hydrogen purity online detection instrument and use method and application thereof |
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| TR01 | Transfer of patent right |
Effective date of registration: 20190528 Address after: No. 1259 Liangtang East Road, Xingsha Industrial Base (Changlong Street), Changsha Economic and Technological Development Zone, Changsha City, Hunan Province Patentee after: Changsha Kaiyuan Instruments Co.,Ltd. Address before: 410100 No. 172 Kaiyuan Road, Changsha economic and Technological Development Zone, Hunan Patentee before: CHANGSHA KAIYUAN INSTRUMENTS Co.,Ltd. |
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Granted publication date: 20140312 |