CN207114421U - A kind of diffusion type sensor of chemical gas and calibration system - Google Patents
A kind of diffusion type sensor of chemical gas and calibration system Download PDFInfo
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- CN207114421U CN207114421U CN201720961612.6U CN201720961612U CN207114421U CN 207114421 U CN207114421 U CN 207114421U CN 201720961612 U CN201720961612 U CN 201720961612U CN 207114421 U CN207114421 U CN 207114421U
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- gas
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- absorption cell
- type sensor
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Abstract
The utility model discloses a kind of diffusion type sensor of chemical gas and calibration system, and the diffusion type sensor of chemical gas includes explosion-proof casing and the signal processor, temperature control module, laser and the gas absorption cell that are packaged in the explosion-proof casing；Temperature control module is connected with laser；One end of gas absorption cell is provided with collimater and photodetector, and the output end of laser is directed at the input of the collimater, and the output end of collimater and the entrance of the gas absorption cell are oppositely arranged；The other end of gas absorption cell is provided with gold-plated optical mirror slip.The utility model uses laser measuring technology, diffusion type gas absorption cell is configured, using long light path air chamber, there is higher sensitivity compared with traditional equipment, the data of measurement are more accurate, response speed is more quick, and good dustproof effect, it is corrosion-resistant, service life is long the advantages that.
Description
Technical field
It the utility model is related to testing equipment field, more particularly to a kind of diffusion type sensor of chemical gas and calibration system
System.
Background technology
Electrochemical sensor existing short life in use at present, measurement data is easily drifted about, calibration frequently, transfinite every time
It will be verified after alarm or the problem of more emat sensor, especially when detecting ammonia concentration, due to some chemical characteristics of ammonia,
Common chemical sensor is caused to detect ammonia concentration precision not high enough.
Utility model content
The utility model mainly provides a kind of diffusion type sensor of chemical gas, it is intended to which solving current chemical sensor makes
The service life present in is short, and measurement data is easily drifted about, calibration is frequent, will verify or change sensing after each overload alarm
The problems such as device.
To achieve the above object, the utility model provides a kind of diffusion type sensor of chemical gas, the diffusion type chemistry
Gas sensor include explosion-proof casing and be packaged in the explosion-proof casing signal processor, temperature control module, laser and
Gas absorption cell；
The temperature control module is connected with the laser, and one end of the gas absorption cell is provided with collimater and photodetection
Device, the output end of the laser are directed at the input of the collimater, and the output end of the collimater absorbs with the gas
The entrance in pond is oppositely arranged, and the collimater is used to that the gas absorption cell will to be injected after laser alignment caused by the laser
It is interior；
The other end of the gas absorption cell is provided with gold-plated optical mirror slip, and the gold-plated optical mirror slip is used for the collimation
The shoot laser of device reflexes to the photodetector.
Preferably, the individual reflection light path of the gold-plated optical mirror slip is not less than 28 centimetres.
Alternatively, the chemical gas is ammonia.
Preferably, the laser is to produce the CWMD butterfly-type lasers that wavelength is 1512 nanometers.
Preferably, the gas absorption cell is encapsulated by air chamber cylinder, and the cylinder has multiple passages, wherein, it is each logical
Stomata is encapsulated by sintered filter core, and the gas absorption cell is used to receive the chemical gas spread in current environment.
Preferably, the gas absorption cell also includes air chamber substrate, and the optical detector and the collimater are fixed on
One end of the air chamber substrate, the optical mirror slip are fixed on the other end of the air chamber substrate.
Preferably, the air chamber substrate, and the inwall of the air chamber cylinder are respectively provided with and sprayed by polytetrafluorethylecoatings coatings
Aluminum alloy material afterwards.
Alternatively, the diffusion type sensor of chemical gas also includes power module, the power module respectively with it is described
Temperature control module, the signal processor and photodetector connection.
Preferably, the explosion-proof casing is cast aluminium explosion-proof casing.
The utility model also provides a kind of diffusion type chemical gas calibration system, and the system is included as claim is above
The diffusion type sensor of chemical gas, and remote control, the remote control are used for by wirelessly connecting with the signal processor
Connect, to carry out infrared remote control calibration to the signal processor.
The utility model uses laser measuring technology, diffusion type gas absorption cell is configured, using long light path air chamber, the equipment
There is higher sensitivity compared with traditional equipment, the data of measurement are more accurate, response speed is more quick and dust-proof
The advantages that effect is good, corrosion-resistant, service life is long, and then the service life for solving current chemical sensor is short, measurement data
Easily drift, calibration be frequent, will be verified after each overload alarm or the problems such as more emat sensor, can be widely used in steel,
The industries such as metallurgy, thermoelectricity, petrochemical industry, chemical industry, coking.
Brief description of the drawings
Fig. 1 is the structured flowchart of diffusion type sensor of chemical gas in the embodiment of the utility model one；
Fig. 2 is that laser signal flows to schematic diagram in diffusion type sensor of chemical gas in the embodiment of the utility model one；
Fig. 3 is gas absorption cell external structure schematic diagram in the utility model diffusion type sensor of chemical gas；
Fig. 4 is gas absorption cell internal structure schematic diagram in the utility model diffusion type sensor of chemical gas.
Drawing reference numeral explanation：
| Label | Title | Label | Title |
| 01 | Explosion-proof casing | 08 | Gold-plated optical mirror slip |
| 02 | Signal processor | 501 | Air chamber adapter |
| 03 | Temperature control module | 502 | Air chamber cylinder |
| 04 | Laser | 503 | The passage encapsulated by sintered filter core |
| 05 | Gas absorption cell | 504 | Air chamber end cap |
| 06 | Photodetector | 505 | End cap sinters filter disc |
| 07 | Collimater | 506 | Demarcate valve |
| 051 | Air chamber substrate | 052 | Collimater cushion block |
| 09 | Power module |
Realization, functional characteristics and the advantage of the utility model purpose will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only part of the embodiment of the present utility model, rather than all
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belong to the scope of the utility model protection.
If it is to be appreciated that related in the utility model embodiment directionality instruction (such as upper and lower, left and right, it is preceding,
Afterwards ...), then directionality instruction be only used for explain it is relative between each part under a certain particular pose (as shown in drawings)
Position relationship, motion conditions etc., if the particular pose changes, directionality instruction also correspondingly changes therewith.
If, should " first ", " the in addition, relate to the description of " first ", " second " etc. in the utility model embodiment
Two " etc. description is only used for describing purpose, and it is not intended that instruction or implying its relative importance or implicit indicating meaning
The quantity of the technical characteristic shown.Thus, " first " is defined, the feature of " second " can express or implicitly include at least one
Individual this feature.In addition, the technical scheme between each embodiment can be combined with each other, but must be with ordinary skill
Personnel can be implemented as basis, and this technical side is will be understood that when the combination appearance of technical scheme is conflicting or can not realize
The combination of case is not present, also not within the protection domain of the requires of the utility model.、
The utility model proposes a kind of diffusion type sensor of chemical gas, Fig. 1 to Fig. 4 is diffusion provided by the utility model
One embodiment of formula sensor of chemical gas.
With reference to figure 1, the diffusion type sensor of chemical gas includes explosion-proof casing 01 and is packaged in the explosion-proof casing
Signal processor 02, temperature control module 03, laser 04 and gas absorption cell 05 in 01；The temperature control module 03 and the laser
Device 04 connects；One end of the gas absorption cell 05 is provided with collimater 07 and photodetector 06, the output of the laser 04
End is directed at the input of the collimater 07, and the output end of the collimater 07 is relative with the entrance of the gas absorption cell 05 to be set
Put, the collimater 07 is used to inject in the gas absorption cell 05 after laser alignment caused by the laser 04；
The other end of the gas absorption cell 05 is provided with gold-plated optical mirror slip 08, and the gold-plated optical mirror slip 08 is used for institute
The shoot laser for stating collimater 07 reflexes to the photodetector 06.
Using the diffusion type sensor of chemical gas set based on said structure, the data for measuring chemical gas are not easy to float
Move, sensitivity is higher, while meets to the requirement of explosion proof of chemical sensor in the industries such as smelting steel, electric power, petrochemical industry, for electricity
The industrial security monitoring system such as power, chemical industry provides the thinking of novelty and practicable solution.
If in the specific implementation, occurring chemical gas leakage in current operating environment, the chemical gas of leakage can be diffused into
In the gas absorption cell 05 of the diffusion type sensor of chemical gas, so as to detect chemical gas concentration.
In the present embodiment, the chemical gas is by taking ammonia as an example；With reference to figure 2, the explosion-proof casing 01 is also packaged with electricity
Source module 09, the power module 09 respectively with the temperature control module 03, the signal processor 02 and the photodetection
Device 06 electrically connects；The temperature control module 08 is connected with laser 04, is controlled with the operating temperature to laser 04 so that is swashed
Light device 04 works under the operating temperature of setting.Laser enters after collimater 07 is collimated caused by the laser 04
Gas absorption cell 05, the laser after the collimation of collimater 05 are reflected by gold-plated optical mirror slip 08, to form swashing after decaying
Optical signal enters the photodetector 06；Laser signal after decaying after gas absorption cell 05 enters laser detector
After 06, the photo-detector 06 converts optical signal into electric signal and is sent into signal processor 02, the signal processor 02
Change to obtain ammonia gas concentration value in gas absorption cell 05 by the light intensity before and after gas absorption cell 05 according to laser；That is signal
The ammonia gas concentration value according to corresponding to being scaled electric signal of processor 02, and the initial concentration value of ammonia gas can be ignored not
Meter, therefore to converse the ammonia gas that may be considered in gas absorption cell 05 of ammonia gas concentration value come dense for signal processor
Angle value.
Further, the individual reflection light path of the gold-plated optical mirror slip is not less than 28 centimetres.
It will be understood that；Because light path of the laser in gas absorption cell 05 is longer, the chemical gas of final sensor measurement
The concentration value precision of body is higher, if the equipment size to be set to too small, the measurement accuracy of the concentration value of influence chemical gas；
The diffusion type sensor of chemical gas can be arranged to 15*10*10 cubic centimetres by the present embodiment, so be easy to user to take
Band, the individual reflection light path of the gold-plated optical mirror slip are not less than 28 centimetres.
Further, the laser 04 is to produce the CWMD butterfly-type lasers that wavelength is 1512 nanometers, laser power
Less than 5mW；Due to some chemical characteristics of ammonia, in order to strengthen the diffusion type sensor of chemical gas in the dense of measurement ammonia
The sensitivity of angle value, select wavelength optimal for 1512 nanometers of CWMD butterfly-type laser measurement effects.
With reference to figure 3, the gas absorption cell 05 of the diffusion type sensor of chemical gas is encapsulated by air chamber cylinder 502, described
Cylinder has multiple passages 503 encapsulated by sintered filter core；The one end of air chamber cylinder 502 is fixed with air chamber adapter 501, air chamber
The other end of cylinder 502 is fixed with air chamber end cap 504, and air chamber end cap 504 has end cap sintering filter disc 505, meets IP65
(grades of Ingress Protection 65, for electrical appliance enclosure to allotrylic degree of protection) requirement, the gas
Absorption cell is used to receive the chemical gas spread in current environment；And in tail end (the i.e. air chamber end cap of gas absorption cell 05
504) using the demarcation coverage mode of valve 506 so that stated accuracy is higher more accurate.
Further, with reference to figure 4, gas, which absorbs 05 pond, also includes air chamber substrate 051, the optical detector 06 and described
Collimater 07 is fixed on one end of the air chamber substrate, and air chamber substrate 051 is additionally provided with collimater cushion block 052, and collimater 07 is fixed
In on collimater cushion block 052, the gold-plated optical mirror slip 08 is fixed on the other end of the air chamber substrate 051.
Further, the air chamber substrate 501, and the inwall of the air chamber cylinder 502 are respectively provided with by polytetrafluoroethylene (PTFE)
Aluminum alloy material after (Teflon) coating spraying, to prevent ammonia gas absorption in gas absorption cell inwall, avoid influenceing measurement essence
Degree, and then corrosion-resistant and can improves the effect of measurement accuracy.
Further, the explosion-proof casing is cast aluminium explosion-proof casing.Above-mentioned explosion-proof casing is cast aluminium explosion-proof casing, is met
Explosion-proof Design and IP65 designs so that the service life of the sensor of chemical gas is longer.
The utility model also proposes a kind of diffusion type chemical gas calibration system, and the system includes diffusion type described above
Sensor of chemical gas, and remote control, the remote control be used for by with the signal processor wireless connection, by institute
State signal processor 02 and carry out infrared remote control calibration, the zero point to signal processor 02, tune precision and alarm point can be realized
Calibration, and then user will need not verify after overload alarm every time or more emat sensor.
Preferred embodiment of the present utility model is the foregoing is only, not thereby limits the scope of the claims of the present utility model,
Every equivalent structure under utility model of the present utility model design, made using the utility model specification and accompanying drawing content
Conversion, or directly/be used in other related technical areas indirectly and be included in scope of patent protection of the present utility model.
Claims (10)
1. a kind of diffusion type sensor of chemical gas, it is characterised in that the diffusion type sensor of chemical gas includes explosion-proof shell
Body and the signal processor being packaged in the explosion-proof casing, temperature control module, laser and gas absorption cell；
The temperature control module is connected with the laser, and one end of the gas absorption cell is provided with collimater and photodetector,
The output end of the laser is directed at the input of the collimater, the output end of the collimater and the gas absorption cell
Entrance is oppositely arranged, and the collimater is used to inject in the gas absorption cell after laser alignment caused by the laser；
The other end of the gas absorption cell is provided with gold-plated optical mirror slip, and the gold-plated optical mirror slip is used for the collimater
Shoot laser reflexes to the photodetector.
2. diffusion type sensor of chemical gas as claimed in claim 1, it is characterised in that the single of the gold-plated optical mirror slip
Reflect light path and be not less than 28 centimetres.
3. diffusion type sensor of chemical gas as claimed in claim 2, it is characterised in that the chemical gas is ammonia.
4. diffusion type sensor of chemical gas as claimed in claim 3, it is characterised in that the laser is to produce wavelength to be
1512 nanometers of CWMD butterfly-type lasers.
5. diffusion type sensor of chemical gas as claimed in claim 4, it is characterised in that the gas absorption cell is justified by air chamber
Cylinder encapsulation, the cylinder have multiple passages, wherein, each passage is encapsulated by sintered filter core, and the gas absorption cell is used for
Receive the chemical gas spread in current environment.
6. diffusion type sensor of chemical gas as claimed in claim 5, it is characterised in that the gas absorption cell also includes gas
Room substrate, the optical detector and the collimater are fixed on one end of the air chamber substrate, and the optical mirror slip is fixed on
The other end of the air chamber substrate.
7. diffusion type sensor of chemical gas as claimed in claim 6, it is characterised in that the air chamber substrate, and it is described
The inwall of air chamber cylinder is respectively provided with the aluminum alloy material after being sprayed by polytetrafluorethylecoatings coatings.
8. the diffusion type sensor of chemical gas as described in claim 1-7 any one, it is characterised in that the diffusion type
Learning gas sensor also includes power module, the power module respectively with the temperature control module, the signal processor and
The photodetector connection.
9. the diffusion type sensor of chemical gas as described in claim 1-7 any one, it is characterised in that the explosion-proof casing
For cast aluminium explosion-proof casing.
10. a kind of diffusion type chemical gas calibration system, it is characterised in that the system is included such as any one of claim 1-9
Described diffusion type sensor of chemical gas, and remote control, the remote control are used for by wireless with the signal processor
Connection, to carry out infrared remote control calibration to the signal processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720961612.6U CN207114421U (en) | 2017-08-02 | 2017-08-02 | A kind of diffusion type sensor of chemical gas and calibration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720961612.6U CN207114421U (en) | 2017-08-02 | 2017-08-02 | A kind of diffusion type sensor of chemical gas and calibration system |
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| Publication Number | Publication Date |
|---|---|
| CN207114421U true CN207114421U (en) | 2018-03-16 |
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| CN201720961612.6U Active CN207114421U (en) | 2017-08-02 | 2017-08-02 | A kind of diffusion type sensor of chemical gas and calibration system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114397257A (en) * | 2021-12-20 | 2022-04-26 | 清华大学 | H2S corrosivity and adsorption analytical characteristic synchronous monitoring system |
-
2017
- 2017-08-02 CN CN201720961612.6U patent/CN207114421U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114397257A (en) * | 2021-12-20 | 2022-04-26 | 清华大学 | H2S corrosivity and adsorption analytical characteristic synchronous monitoring system |
| CN114397257B (en) * | 2021-12-20 | 2024-02-06 | 清华大学 | H (H) 2 Synchronous monitoring system for S corrosiveness and adsorption analysis characteristics |
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