CN215179646U - Detection device for corrosion-resistant total organic carbon analyzer - Google Patents
Detection device for corrosion-resistant total organic carbon analyzer Download PDFInfo
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- CN215179646U CN215179646U CN202120949504.3U CN202120949504U CN215179646U CN 215179646 U CN215179646 U CN 215179646U CN 202120949504 U CN202120949504 U CN 202120949504U CN 215179646 U CN215179646 U CN 215179646U
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Abstract
The utility model discloses a corrosion-resistant total detection device for organic carbon analysis appearance all sets up the sapphire lens in detection device's infrared light source transmission side and receiving side for seal the PCB subassembly that has infrared light source and the PCB subassembly that has infrared receiving module. Therefore, between the infrared light source of the detector and the detection air chamber, and the infrared receiving module and the monitoring module utilize the sapphire lens to perform isolation, thereby effectively preventing harmful substances in the mixed gas to be detected from corroding or oxidizing related components and preventing moisture in the mixed gas from humidifying components.
Description
Technical Field
The utility model belongs to the water quality testing field, concretely relates to corrosion-resistant total detection device for 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 TOC 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 infrared carbon dioxide sensor, which is one of the most reliable and accurate carbon dioxide gas sensors. 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.
Because the existing CO2 detector has no protection device, the aging of components such as a light source and a PCB board card in the detection device can be accelerated due to the influence of a small amount of sulfides and acidizing substances contained in gas to be detected, the service life can be greatly shortened, and the defects are obvious.
Disclosure of Invention
The utility model discloses the technical problem that will solve is: the utility model provides a corrosion-resistant total detection device for organic carbon analysis appearance has solved the problem that PCB subassembly does not have protection part and ages fast among the prior art.
The utility model discloses a solve above-mentioned technical problem and adopt following technical scheme:
the utility model provides a corrosion-resistant total for organic carbon analytical instrument detection device, all sets up the sapphire lens at detection device's infrared light source transmission side and receiving side for seal the PCB subassembly that has infrared light source and the PCB subassembly that has infrared receiving module.
The infrared light source transmitting side and the receiving side comprise internal pressing rings, heavy grooves are formed in the internal pressing rings according to the specifications of the sapphire lenses, and the sapphire lenses are arranged in the heavy grooves and sealed through sealing rings.
And a sealing ring is placed in the sinking groove, and a sapphire lens is clamped on the sealing ring.
Two sealing rings are clamped in the peripheral groove of the inner pressing ring.
And the inner pressing ring with the sapphire lens installed is clamped into a corresponding groove of the infrared light source installation seat.
The PCB assembly with the infrared light source and the PCB assembly with the infrared receiving module are respectively attached to the outer side of the infrared light source mounting seat and are fixed.
The PCB assembly with the infrared light source and the PCB assembly with the infrared receiving module are locked on corresponding screw holes of the infrared light source mounting seat through screws.
And a quick-connection plug is arranged on the emitting side of the infrared light source.
The quick-connection plug is arranged on the circumferential outer side of the emitting side of the infrared light source.
The infrared receiving module is welded on the receiving module PCB to form a PCB assembly with the infrared receiving module.
Compared with the prior art, the utility model discloses following beneficial effect has:
the sapphire lens is arranged on the light source divergence side and the light source receiving side, the PCB assembly and the detection air chamber are isolated, and therefore the corrosion or oxidation of harmful substances in the mixed gas to be detected can be effectively prevented, and the moisture humidification component can be prevented.
Drawings
Fig. 1 is a structural schematic diagram of the corrosion-resistant CO2 detection device of the present invention.
Wherein, the labels in the figure are: 1-a light source PCB; 1-1-an infrared light source; 2-internal pressing ring; 3-a first sealing ring; 4-a second sealing ring; 5-a sapphire lens; 6-quick plug; 7-infrared light source mounting base; 8-detector screw cap; 9-a third sealing ring; 10-a reflector tube; 11-receiving a module PCB; 11-1-infrared receiving module.
Detailed Description
The structure and working process of the present invention will be further explained with reference to the accompanying drawings.
The utility model aims at providing a corrosion-resistant total detection device for organic carbon analysis appearance all sets up the sapphire lens in detection device's infrared light source transmission side and receiving side for seal the PCB subassembly that has infrared light source and the PCB subassembly that has infrared receiving module. The PCB board that has infrared source is pressed into a heavy groove of detector inside clamping ring processing to the side is dispersed at the light source, its diameter degree of depth is unanimous with the sapphire lens, place an O type sealing washer in detector heavy inslot portion, then put into heavy groove and light source seat to the sapphire lens and compress tightly, utilize the sapphire lens to do the isolation usefulness between detector infrared source and detection air chamber like this to can effectively prevent the harmful substance among the gas mixture that awaits measuring from corroding or oxidation relevant part, also can prevent moisture humidifying part wherein. The same is true on the light source receiving side.
In a specific embodiment, as shown in figure 1,
the utility model provides a corrosion-resistant total for organic carbon analytical instrument detection device, all sets up the sapphire lens at detection device's infrared light source transmission side and receiving side for seal the PCB subassembly that has infrared light source and the PCB subassembly that has infrared receiving module.
The infrared light source emission side: firstly, two first sealing rings 3 are clamped in grooves at the periphery of an inner pressing ring 2, then a second sealing ring 4 is placed in the groove, a sapphire mirror 5 is clamped on the second sealing ring 4, an installed sapphire lens assembly is clamped in a corresponding groove of an infrared light source installation seat 7, then a light source PCB 1 with an infrared light source 1-1 is attached to the outer side of the infrared light source installation seat 7 and is tightly locked and compacted at a corresponding screw hole position by using a screw, then a third sealing ring 9 is placed in a groove in a detector nut 8 and is tightly screwed with the infrared light source installation seat 7 by using a screw thread, and finally a quick connector 6 is screwed at a corresponding position on the outer side of the infrared light source installation seat 7.
Infrared light source receiving side: the infrared receiving module 11-1 is welded on the receiving module PCB 11, and the rest structure principle is similar to the transmitting side of the infrared light source.
After the infrared source emitting side assembly and the infrared source receiving side assembly are installed, two ends of the reflection tube 10 are respectively inserted into the two modules to form an integral detector module
The detection module has the following test principle: the CO2 gas to be measured enters from 6 and enters a cavity inside 10 through an air hole groove 1 processed at two ends of 10, after absorbing infrared light with a specific wavelength of 4.26 mu m in the infrared light emitted by 1-1, the gas is discharged from 6 (a quick connector) at an exhaust end at a receiving side, at the moment, an infrared receiving side module absorbs the infrared light without the wavelength of 4.26 mu m, an optical signal is converted into a corresponding electrical signal to form the shape of a peak, the area of the peak is measured by data processing, and as the peak area is in proportion to the carbon content in the sample, the relationship (a calibration curve) between the carbon content in the carbon standard solution and the peak area is firstly solved by an external standard method, so that the carbon content in the sample can be calculated.
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 belong to 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 (10)
1. The utility model provides a corrosion-resistant total detection device for organic carbon analysis appearance which characterized in that: and sapphire lenses are arranged on the emitting side and the receiving side of the infrared light source of the detection device and used for sealing the PCB assembly with the infrared light source and the PCB assembly with the infrared receiving module.
2. The detecting device for a corrosion-resistant total organic carbon analyzer according to claim 1, characterized in that: the infrared light source transmitting side and the receiving side comprise internal pressing rings, heavy grooves are formed in the internal pressing rings according to the specifications of the sapphire lenses, and the sapphire lenses are arranged in the heavy grooves and sealed through sealing rings.
3. The detecting device for a corrosion-resistant total organic carbon analyzer according to claim 2, characterized in that: and a sealing ring is placed in the sinking groove, and a sapphire lens is clamped on the sealing ring.
4. The detecting device for a corrosion-resistant total organic carbon analyzer according to claim 2, characterized in that: two sealing rings are clamped in the peripheral groove of the inner pressing ring.
5. The detecting device for a corrosion-resistant total organic carbon analyzer according to claim 4, wherein: and the inner pressing ring with the sapphire lens installed is clamped into a corresponding groove of the infrared light source installation seat.
6. The detecting device for a corrosion-resistant total organic carbon analyzer according to claim 5, wherein: the PCB assembly with the infrared light source and the PCB assembly with the infrared receiving module are respectively attached to the outer side of the infrared light source mounting seat and are fixed.
7. The detecting device for a corrosion-resistant total organic carbon analyzer according to claim 6, wherein: the PCB assembly with the infrared light source and the PCB assembly with the infrared receiving module are locked on corresponding screw holes of the infrared light source mounting seat through screws.
8. The detecting device for a corrosion-resistant total organic carbon analyzer according to claim 1, characterized in that: and a quick-connection plug is arranged on the emitting side of the infrared light source.
9. The detecting device for a corrosion-resistant total organic carbon analyzer according to claim 8, wherein: the quick-connection plug is arranged on the circumferential outer side of the emitting side of the infrared light source.
10. The detecting device for a corrosion-resistant total organic carbon analyzer according to claim 1, characterized in that: the infrared receiving module is welded on the receiving module PCB to form a PCB assembly with the infrared receiving module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120949504.3U CN215179646U (en) | 2021-05-06 | 2021-05-06 | Detection device for corrosion-resistant total organic carbon analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120949504.3U CN215179646U (en) | 2021-05-06 | 2021-05-06 | Detection device for corrosion-resistant total organic carbon analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215179646U true CN215179646U (en) | 2021-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120949504.3U Active CN215179646U (en) | 2021-05-06 | 2021-05-06 | Detection device for corrosion-resistant total organic carbon analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215179646U (en) |
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2021
- 2021-05-06 CN CN202120949504.3U patent/CN215179646U/en active Active
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