CN215179645U - Gas detection device for total organic carbon analyzer - Google Patents
Gas detection device for total organic carbon analyzer Download PDFInfo
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- CN215179645U CN215179645U CN202120923074.8U CN202120923074U CN215179645U CN 215179645 U CN215179645 U CN 215179645U CN 202120923074 U CN202120923074 U CN 202120923074U CN 215179645 U CN215179645 U CN 215179645U
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Abstract
The utility model relates to a water quality testing technical field especially relates to a gas detection device for total organic carbon analysis appearance, sets up the light that includes first convex lens and be located the infrared pointolite on the first convex lens focus through the entrance point in gaseous detection barrel and takes place the subassembly, sets up including second convex lens and being located in the gaseous internal exit end of detection barrel infrared receiver's in the second convex lens focus light receiving assembly to make the light that takes place the subassembly emission from light and be the parallel light, and then make the infrared light in the absorption cavity be the parallel light, then convert the parallel light into a focus light source through light receiving assembly and receive by infrared receiver, thereby can improve the accuracy that gaseous detected.
Description
Technical Field
The utility model relates to a water quality testing technical field, more specifically the says so, is a gas detection device for total organic carbon analysis appearance.
Background
Total Organic Carbon (TOC) is determined by a special instrument, namely a total organic carbon analyzer (hereinafter referred to as TOC analyzer), and the total organic carbon analyzer has the advantages of simple flow, good reproducibility, high sensitivity, stability and reliability, no chemical consumption in the determination process, basically no secondary pollution, complete oxidation and the like.
Water TOC is generally classified into dry, wet and direct conductivity processes
And (3) dry method: the method is mainly characterized in that a water sample to be detected is sampled to a high-temperature cracking furnace of a total organic carbon analyzer from a sample bottle by a sampling pump module or a pump sampling mechanism, the high-temperature cracking furnace is heated at high temperature (a combustion pipe is filled with a catalyst in advance and heated to 800 ℃), organic matters in the sample are decomposed into CO2, CO2 is cooled by a condensing device and reaches a CO2 detector, and the content of the organic matters in the water sample to be detected is reversely deduced by the content of the CO2 detected by the detector, so that the purpose of detection is achieved.
The existing CO2 detector is typically an NDIR (Non-dispersive Infra-red) infrared carbon dioxide sensor, which is a reliable and accurate carbon dioxide gas sensor. The NDIR non-dispersive infrared sensor uses an infrared light source, the infrared light (point light source) emitted by the infrared sensor passes through a special gas chamber, the carbon dioxide gas absorbs the infrared light with the specific wavelength of 4.26 μm, the optical signal is converted into a corresponding electric signal through a special detector to form the shape of a peak, the area of the peak is measured by data processing, and the carbon content in the sample can be calculated by firstly calculating the relation (calibration curve) between the carbon content in the carbon standard solution and the peak area by an external standard method because the peak area is proportional to the carbon content in the sample. The existing detection device uses a scattering infrared light source on one side of an air chamber, and reflects light rays in the air chamber to be detected in a way of plating silver on the surface of the air chamber, so that loss of infrared light in the process of propagation in the air chamber is compensated, an infrared detection module on the other side of the air chamber cannot cause inaccuracy of a final test result due to light consumption, but a coating on the surface of the air chamber in the detection device gradually becomes black due to oxidation corrosion, so that the quantity of reflected light passing through the coating is reduced, and the test result is finally influenced; this is undesirable to those skilled in the art.
SUMMERY OF THE UTILITY MODEL
Because prior art has above-mentioned defect, this application has provided a gas detection device for total organic carbon analysis appearance, and its aim at optimizes current gas detection device for total organic carbon analysis appearance, solves the defect of gas detection device for total organic carbon analysis appearance.
In order to achieve the technical purpose, the following technical scheme is adopted in the application:
a gas detection apparatus for a total organic carbon analyzer, comprising: the device comprises a gas detection cylinder, a light generation assembly and a light receiving assembly;
a gas absorption cavity is arranged in the gas detection cylinder; the light generating assembly and the light receiving assembly are respectively arranged on two sides of the gas absorption cavity and seal the gas absorption cavity;
the light generating assembly is used for generating infrared parallel light, the light receiving assembly is used for receiving the infrared parallel light, the gas detection cylinder is provided with a gas inlet and a gas outlet, and the gas inlet and the gas outlet are communicated with the gas absorption cavity.
Preferably, the both ends of gaseous detection barrel are entrance point and exit end respectively, the light generation subassembly set up in the entrance point of gaseous detection barrel, the light receiving component set up in the exit end of detection barrel.
Preferably, the light generating assembly includes a first convex lens and an infrared point light source located at a focal point of the first convex lens.
Preferably, the light generating assembly further comprises a first sealing plate, and the infrared point light source is disposed on the first sealing plate.
Preferably, the first convex lens and the first sealing plate are both detachably mounted on the gas detection cylinder.
Preferably, the light receiving assembly includes a second convex lens and an infrared receiver located at a focal point of the second convex lens.
Preferably, the light generating assembly further comprises a second sealing plate, the infrared receiver being disposed on the second sealing plate.
Preferably, the second convex lens and the second sealing plate are both detachably mounted on the gas detection cylinder.
Preferably, the gas detection device is used for detecting CO2C content in the gas. Compared with the prior art, the method has the following advantages or beneficial effects:
the utility model discloses a gas detection device for total organic carbon analysis appearance, the entrance point through in gaseous detection barrel sets up and includes first convex lens and is located the subassembly is taken place to the light of infrared pointolite on the first convex lens focus, in gaseous detection barrel exit end setting include second convex lens and be located infrared receiver's on the second convex lens focus light receiving assembly to make the light that the subassembly was given place to from the light and launch and be the parallel light, and then make the infrared light in the absorption cavity be the parallel light, then convert the parallel light into a focus light source through light receiving assembly and receive by infrared receiver, thereby can improve the accuracy that gaseous detected.
Drawings
FIG. 1 is a schematic diagram of the operation of the light generating module and the light receiving module of the present invention
Fig. 2 is a schematic structural diagram of a gas detection device for a total organic carbon analyzer according to an embodiment of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific examples, which should not be construed as limiting the invention.
As shown in fig. 1 and 2, the utility model discloses a gas detection device for a total organic carbon analyzer; specifically, the gas detection device includes: the device comprises a gas detection cylinder 1, a light generation assembly and a light receiving assembly; the gas detection cylinder 1 is internally provided with a gas absorption cavity, and the light generation assembly and the light receiving assembly are respectively arranged at two sides of the gas absorption cavity and seal the gas absorption cavity; the light generating assembly is used for generating infrared parallel light, the light receiving assembly is used for receiving the infrared parallel light, the gas detection cylinder body 1 is provided with a gas inlet 8 and a gas outlet 9, and the gas inlet 8 and the gas outlet 9 are both communicated with the gas absorption cavity.
In a preferred embodiment of the present invention, the two ends of the gas detection cylinder are respectively an inlet end and an outlet end, the light generating assembly is disposed at the inlet end of the gas detection cylinder 1, and the light receiving assembly is disposed at the outlet end of the gas detection cylinder; the light generating assembly comprises a first convex lens 3, a first sealing plate 6 and an infrared point light source 2 which is positioned on the focus of the first convex lens 3 and arranged on the first sealing plate 6; the light receiving assembly comprises a second convex lens 4, a second sealing plate 7 and an infrared receiver 5 which is positioned on the focus of the second convex lens 4 and is arranged on a second sealing plate 6; therefore, scattered light rays emitted by the infrared point light source 2 at the focus of the first convex lens 3 can be converted into parallel light rays through the first convex lens 3, and then the parallel light rays are converged on the infrared receiver 5 at the focus of the second convex lens 4 after passing through the second convex lens 4.
In a preferred embodiment of the present invention, the first convex lens 3 and the first sealing plate 6 are detachably mounted on the gas detection cylinder 1, and the second convex lens 4 and the second sealing plate 7 are detachably mounted on the gas detection cylinder 1, so as to facilitate the detachment.
Specifically, the gas detection device is used for detecting CO2The content of C in the gas, and CO is detected by the gas detection device2The specific process of the gas is as follows:
firstly, infrared light emitted by an infrared point light source 2 is converted into parallel infrared light through a first convex lens 3, the parallel light is converged to a focus through a second convex lens 4 and is received by an infrared receiver 5 arranged at the focus, meanwhile, CO2 gas to be detected enters a gas absorption cavity from a gas inlet 8 and absorbs 4.26um infrared light inside the gas absorption cavity and then flows out of a gas outlet 9, so that the infrared receiving module can collect the infrared light without 4.26um, optical signals are converted into corresponding electric signals to form the shape of a peak, the area of the peak is measured by data processing, and the relation (calibration curve) between the carbon content in carbon liquid and the peak area is firstly solved by an external standard method because the peak area is proportional to the carbon content in a sample, and the carbon content in the sample can be calculated.
To sum up, the utility model provides a gaseous detection device converts the infrared light of scattering into the parallel light through first convex lens, and the mode that rethread second convex lens converted the parallel light into the pointolite lets infrared receiver receive and convert the test result into, and the parallel light just no longer relies on the cladding material reflection on air chamber surface at the in-process of propagating like this, makes the light consumption littleer to infrared receiver also can compare the collection infrared light that awaits measuring of concentrating, and then can promote the precision of final test.
Those skilled in the art will appreciate that variations may be implemented by those skilled in the art in combination with the prior art and the above-described embodiments, and will not be described herein in detail. Such variations do not affect the essence of the present invention, and are not described herein.
The above description is directed to the preferred embodiment of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that devices and structures not described in detail are understood to be implemented in a manner common in the art; without departing from the scope of the invention, it is intended that the present invention shall not be limited to the above-described embodiments, but that the present invention shall include all the modifications and variations of the embodiments. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention all still fall within the protection scope of the technical solution of the present invention, where the technical entity does not depart from the content of the technical solution of the present invention.
Claims (9)
1. A gas detection device for a total organic carbon analyzer, comprising: the device comprises a gas detection cylinder, a light generation assembly and a light receiving assembly;
a gas absorption cavity is arranged in the gas detection cylinder; the light generating assembly and the light receiving assembly are respectively arranged on two sides of the gas absorption cavity and seal the gas absorption cavity;
the light generating assembly is used for generating infrared parallel light, the light receiving assembly is used for receiving the infrared parallel light, the gas detection cylinder is provided with a gas inlet and a gas outlet, and the gas inlet and the gas outlet are communicated with the gas absorption cavity.
2. The gas detecting apparatus for a total organic carbon analyzer according to claim 1, wherein the gas detecting cylinder has an inlet end and an outlet end at both ends thereof, the light generating module is disposed at the inlet end of the gas detecting cylinder, and the light receiving module is disposed at the outlet end of the gas detecting cylinder.
3. The gas detecting device for a total organic carbon analyzer according to claim 1, wherein the light generating unit includes a first convex lens and an infrared point light source located at a focal point of the first convex lens.
4. The gas detecting device for a total organic carbon analyzer according to claim 3, wherein the light generating assembly further comprises a first sealing plate, and the infrared point light source is disposed on the first sealing plate.
5. The gas detecting device for a total organic carbon analyzer according to claim 4, wherein the first convex lens and the first sealing plate are detachably attached to the gas detecting cylinder.
6. The gas detecting device for a total organic carbon analyzer according to claim 1, wherein the light receiving unit includes a second convex lens and an infrared receiver located at a focal point of the second convex lens.
7. The gas detecting device for a total organic carbon analyzer according to claim 6, wherein the light generating module further comprises a second sealing plate, and the infrared receiver is disposed on the second sealing plate.
8. The gas detecting device for a total organic carbon analyzer according to claim 7, wherein the second convex lens and the second sealing plate are detachably attached to the gas detecting cylinder.
9. The gas detecting apparatus for a total organic carbon analyzer according to claim 1, wherein the gas detecting apparatus is for detecting CO2C content in the gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120923074.8U CN215179645U (en) | 2021-04-29 | 2021-04-29 | Gas detection device for total organic carbon analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120923074.8U CN215179645U (en) | 2021-04-29 | 2021-04-29 | Gas detection device for total organic carbon analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215179645U true CN215179645U (en) | 2021-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120923074.8U Active CN215179645U (en) | 2021-04-29 | 2021-04-29 | Gas detection device for total organic carbon analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215179645U (en) |
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2021
- 2021-04-29 CN CN202120923074.8U patent/CN215179645U/en active Active
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