CN203479697U - Non-dispersive infrared detector - Google Patents
Non-dispersive infrared detector Download PDFInfo
- Publication number
- 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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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 element analysis technology field, particularly a kind of non-dispersive infrared detector.
Background technology
Ultimate analysis is identify the element existing in organism and measure it containing quantitative analysis, and element kind and the method for test are varied at present.EAS for the carbon in test substances, hydrogen, oxygen, nitrogen, five kinds of elements of sulphur is the most common, and this EAS adopts infrared method, thermal conductivity method or infrared-thermal conductivity method translocation to measure element at present.In test process, protium is measured with the product water after burning, and carbon is measured with the carbon dioxide after burning, and mensuration process all realizes by non-dispersive infrared sensor.
Current EAS, take infrared method as example, and infrared method be take Lambert-Beer's law as according to element is measured.Lambert-Beer's law mathematic(al) representation is A=lg (1/T)=Kbc, and wherein A is absorbance; T is transmittance, is that transmitted intensity is than upper incident intensity; K is molar absorption coefficient, and it is relevant with the character of absorbing material and the wavelength X of incident light; C is the concentration of extinction material; B is absorber thickness.The physical significance of Lambert-Beer's law is when the vertical extinction material by a certain even non-scattering of a branch of collimated monochromatic ligth, and its absorbance A is directly proportional to concentration c and the absorption bed thickness b of extinction material.
At present, non-dispersive infrared detector comprises: for launching the sensing chamber of ultrared transmitter module, reception detected gas, and the receiver module of reaction detection result.In the prior art, for fear of detecting indoor gas, leak, or ambient atmos enters sensing chamber, non-dispersive infrared detector is set to integral structure conventionally, to guarantee the sealing of detecting device.
But, in practical operation, the gas that enters infrared detector inevitably can be brought dust into, this makes after long-time use, in the detecting device of non-dispersive infrared detector, understand adhesive dust, thereby cause the loose look of infrared light, and because infrared test device is integral type structure, be difficult to cleaning in sensing chamber, make test result out of true.
Therefore, how providing a kind of non-dispersive infrared detector, be convenient to clean, to improve the degree of accuracy of test result, is the current technical issues that need to address of those skilled in the art.
Utility model content
The purpose of this utility model is to provide a kind of non-dispersive infrared detector, is convenient to clean, to improve the degree of accuracy of test result.
For solving the problems of the technologies described above, the utility model provides following technical scheme:
A non-dispersive infrared detector, comprising: for launching ultrared transmitter module, receiving the sensing chamber of detected gas and the receiver module of reaction detection result, wherein, described transmitter module is connected with one end removable seal of described sensing chamber,
And/or described receiver module is connected with the other end removable seal of described sensing chamber.
Preferably, in above-mentioned detecting device, described transmitter module is connected with one end removable seal of described sensing chamber, is connected with the other end removable seal of described sensing chamber with described receiver module.
Preferably, in above-mentioned detecting device, described transmitter module is connected by the first screw with one end of described sensing chamber, and seals by the first seal;
Described receiver module is connected by the second screw with the other end of described sensing chamber, and seals by the second seal.
Preferably, in above-mentioned detecting device, described transmitter module comprises:
Be used for launching ultrared infrared light supply;
The light source circuit board being electrically connected to described infrared light supply;
Be arranged on one end of described sensing chamber, and can make infrared ray enter the transmitting infrared window of described sensing chamber.
Preferably, in above-mentioned detecting device, also comprise the radiating subassembly that is used to described infrared light supply to dispel the heat.
Preferably, in above-mentioned detecting device, described sensing chamber comprises:
Sensing chamber's main body, offers the inlet suction port, gas passage and the air outlet adapter that for detected gas, enter in described sensing chamber main body;
Be opened in the gold-plated air chamber in described sensing chamber main body, described transmitting infrared window is arranged on one end of described gold-plated air chamber, and described gas passage is communicated with described gold-plated air chamber, and described air outlet adapter is communicated with described gold-plated air chamber.
Preferably, in above-mentioned detecting device, described receiver module comprises:
Be arranged on the reception infrared window of the other end of described gold-plated air chamber;
Be connected with described reception infrared window, for collecting ultrared optically focused cone;
The sensor being connected with the vertex of a cone of described optically focused cone;
Signal circuit board for survey sensor information.
Preferably, in above-mentioned detecting device, also comprise the web joint circuit board being electrically connected to described signal circuit board and described light source circuit board.
The utility model also provides a kind of non-dispersive infrared detector, comprise: for launching ultrared transmitter module, receiving the sensing chamber of detected gas and the receiver module of reaction test result, wherein, transmitter module is connected with one end removable seal of sensing chamber, and/or receiver module is connected with the other end removable seal of sensing chamber.By sensing chamber is detachably connected with transmitter module, and/or be detachably connected with receiver module, in use, can be by sensing chamber is separated with transmitter module and/or separated with receiver module after dust if having in sensing chamber, then sensing chamber is cleaned, thereby reach object clean in sensing chamber, avoid dust to ultrared dispersive influence, guarantee the degree of accuracy of measuring.
Accompanying drawing explanation
The structural representation of the non-dispersive infrared detector that Fig. 1 provides for the utility model embodiment;
The cut-open view of the non-dispersive infrared detector that Fig. 2 provides for the utility model embodiment.
Wherein,
1 for radiating subassembly, 2 for transmitter module, 3 for inlet suction port, 4 for air outlet adapter, 5 for sensing chamber, 6 for receiver module, 7 for sensor, 8 for optically focused cone, 9 be the second seal, 11 for receive infrared window, 12 for O-ring seal, 13 for gas passage, 14 for gold-plated air chamber, 15 be the first seal, 16 for transmitting infrared window, 17 for infrared light supply, 18 for light source circuit board, 19 for web joint circuit board, 20 be signal circuit board.
Embodiment
The utility model core is to provide a kind of non-dispersive infrared detector, is convenient to clean, to improve the degree of accuracy of test result.
In order to make those skilled in the art person understand better the utility model scheme, below in conjunction with drawings and embodiments, the utility model is described in further detail.
Please refer to shown in Fig. 1, the utility model embodiment provides a kind of non-dispersive infrared detector, comprise: for launching ultrared transmitter module 2, receiving the sensing chamber 5 of detected gas and the receiver module 6 of reaction test result, wherein, transmitter module 2 is connected with one end removable seal of sensing chamber 5, and/or receiver module 6 is connected with the other end removable seal of sensing chamber 5.
By sensing chamber 5 is detachably connected with transmitter module 2, and/or be detachably connected with receiver module 6, in use, can be by sensing chamber 5 is separated with transmitter module 2 and/or separated with receiver module 6 after dust if having in sensing chamber 5, then sensing chamber 5 is cleaned, thereby reach the object of sensing chamber's 5 interior cleanings, avoid dust to ultrared dispersive influence, guarantee the degree of accuracy of measuring.
Because sensing chamber 5 has certain length, in order to be further convenient to user to cleaning in sensing chamber 5, in the present embodiment, transmitter module 2 is connected with one end removable seal of sensing chamber 5, the other end of sensing chamber 5 is connected with receiver module 6 removable seals simultaneously.When needs clean sensing chamber 5, can transmitter module 2 is separated with receiver module 6 Jun Yu sensing chamber 5, and then clean sensing chamber 5.It will be appreciated by persons skilled in the art that in order to guarantee the sealing of sensing chamber 5, also can any one and sensing chamber 5 in transmitter module 2 and receiver module 6 is detachable.
Particularly, transmitter module 2 is connected by the first screw (not marking in figure) with one end of sensing chamber 5, and by the first seal 15 sealings; Receiver module 6 is connected by the second screw (not marking in figure) with the other end of sensing chamber 5, and by the second seal 9 sealings.The present embodiment has only been to provide a kind of concrete connected mode, in practical operation, also can be realized and being connected by other web members.Preferably, the first above-mentioned seal 15 and the second seal 9 are sealing ring.
Further, in embodiment, above-mentioned transmitter module 2 specifically comprises: infrared light supply 17, light source circuit board 18 and transmitting infrared window 16.
Wherein, infrared light supply 17 is electrically connected to light source circuit board 18, and in use, light source circuit board 18 provides electric power for infrared light supply 17, so that infrared light supply 17 transmitting infrared rays.
Be arranged on one end of sensing chamber 5, and can make infrared ray enter the transmitting infrared window 16 of sensing chamber 5.In order to complete the detection of infrared ray to detected gas, the detected gas that the infrared ray on-dispersive that need to make infrared light supply 17 produce enters in 5 Nei，Yi Dui sensing chamber 5 of sensing chamber detects.
Due to infrared light supply 17 in the course of the work, can produce certain heat, in order to guarantee the normal use of this detecting device, further in embodiment, also comprise the radiating subassembly 1 for infrared light supply 17 is dispelled the heat.In actual use, this radiating subassembly 1 can be heat exchanger device.The core that radiating subassembly 1 is set is that infrared light supply 17 is dispelled the heat, and therefore, so long as can realize the radiator structure of above-mentioned purpose, all can.
In the present embodiment, disclosed sensing chamber 5 comprises: sensing chamber's main body (not marking in figure) and be opened in the gold-plated air chamber 14 in sensing chamber's main body.
Wherein, in sensing chamber's main body, offer the inlet suction port 3 entering for detected gas, detected gas passage 13 and air outlet adapter 4, and detected gas passage 13 is communicated with gold-plated air chamber 14, and air outlet adapter 4 is communicated with gold-plated air chamber 14.Detected gas enters in gas passage 13 by inlet suction port 3, and enter gold-plated air chamber 14 along gas passage 13, due to can be by infrared radiation in gold-plated air chamber 14, therefore can complete the detection of infrared ray to the detected gas in gold-plated air chamber 14, after detection completes, detected gas is discharged gold-plated air chamber 14 by air outlet adapter 4.Further, also gold-plated air chamber 14 can be arranged in the accommodating cavity that sensing chamber's main body offers, in order to prevent that gold-plated air chamber 14 from rocking in accommodating cavity, preferably can O-ring seal be set between, and sealing circle 12 is set in the outside surface of gold-plated air chamber 14.In the present embodiment, the number of O-ring seal 12 is not limited.
The gold-plated air chamber 14 providing in the present embodiment is opened in sensing chamber's main body, be that sensing chamber's main body forms gold-plated air chamber 14, preferably, the xsect of this gold-plated air chamber 14 is circular, and transmitting infrared window 16 is arranged on one end of gold-plated air chamber 14, transmitting infrared window 16 is set between gold-plated air chamber 14 and infrared light supply 17.
Further, in embodiment, receiver module 6 comprises: receive infrared window 11, optically focused cone 8, sensor 7 and signal circuit board 20.
Wherein, receive the other end that infrared window 11 is arranged on gold-plated air chamber 14, preferably, the port at the two ends of this gold-plated air chamber 14 blocks by transmitting infrared window 16 and reception infrared window 11 respectively.Above-mentioned transmitting infrared window 16 and reception infrared window 11 are the material that can make infrared penetration.
Because effective contact area of sensor 7 is less, and for the diameter of gold-plated air chamber 14 compared with for large detecting device, be difficult to guarantee that the infrared ray passing is all received by sensor 7 in gold-plated air chamber 14, therefore, can affect the linearity of detecting device, and linear quality is to evaluate the important parameter of infrared detector quality, in view of the above problems, in the present embodiment, be provided with and receive infrared window 11 and be connected, and for collecting ultrared optically focused cone 8, preferably, larger one end of diameter of this optically focused cone 8 is connected with reception infrared window 11, and the vertex of a cone of optically focused cone 8 is connected with sensor 7.By optically focused 8 the effect of bore, infrared ray is collected and converged guaranteeing.
The ultrared sensor 7 of collecting for receiving optically focused cone 8, after being become to electric signal, the infra red treatment of collection passes to the signal circuit board 20 for survey sensor 7 information, the information showing according to signal circuit board 20, just can indirectly measure the concentration of the component of detected gas, thereby complete detection.
In actual production, also signal circuit board 20 and light source circuit board 18 all can be electrically connected to web joint circuit board 19, to overhaul by 19 pairs of light source circuit boards 18 of web joint circuit board and signal circuit board 20.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the utility model.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (7)
1. a non-dispersive infrared detector, comprise: for launching ultrared transmitter module, receiving the sensing chamber (5) of detected gas and the receiver module (6) of reaction detection result, it is characterized in that, described transmitter module (2) is connected with one end removable seal of described sensing chamber (5)
And/or described receiver module (6) is connected with the other end removable seal of described sensing chamber (5).
2. detecting device according to claim 1, is characterized in that, described transmitter module (2) is connected by the first screw with one end of described sensing chamber (5), and by the first seal (15) sealing;
Described receiver module (6) is connected by the second screw with the other end of described sensing chamber (5), and by the second seal (9) sealing.
3. detecting device according to claim 1, is characterized in that, described transmitter module (2) comprising:
Be used for launching ultrared infrared light supply (17);
The light source circuit board (18) being electrically connected to described infrared light supply (17);
Be arranged on one end of described sensing chamber (5), and can make infrared ray enter the transmitting infrared window (16) of described sensing chamber (5).
4. detecting device according to claim 3, is characterized in that, also comprises the radiating subassembly (1) that is used to described infrared light supply (17) to dispel the heat.
5. detecting device according to claim 3, is characterized in that, described sensing chamber (5) comprising:
Sensing chamber's main body, offers the inlet suction port (3), gas passage (13) and the air outlet adapter (4) that for detected gas, enter in described sensing chamber main body;
Be opened in the gold-plated air chamber (14) in described sensing chamber main body, described transmitting infrared window (16) is arranged on one end of described gold-plated air chamber (14), and described gas passage (13) is communicated with described gold-plated air chamber (14), described air outlet adapter (4) is communicated with described gold-plated air chamber (14).
6. detecting device according to claim 5, is characterized in that, described receiver module (6) comprising:
Be arranged on the reception infrared window (11) of the other end of described gold-plated air chamber (14);
Be connected with described reception infrared window (11), for collecting ultrared optically focused cone (8);
The sensor (7) being connected with the vertex of a cone of described optically focused cone (8);
Signal circuit board (20) for survey sensor (7) information.
7. detecting device according to claim 6, is characterized in that, also comprises the web joint circuit board (19) being electrically connected to described signal circuit board (20) and described light source circuit board (18).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320298729.2U CN203479697U (en) | 2013-05-28 | 2013-05-28 | Non-dispersive infrared detector |
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| CN201320298729.2U CN203479697U (en) | 2013-05-28 | 2013-05-28 | Non-dispersive infrared detector |
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| CN203479697U true CN203479697U (en) | 2014-03-12 |
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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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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 |