CN206638623U - A kind of detection means of accurate Characterization volatile organic compoundses sensor - Google Patents
A kind of detection means of accurate Characterization volatile organic compoundses sensor Download PDFInfo
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- CN206638623U CN206638623U CN201720026757.7U CN201720026757U CN206638623U CN 206638623 U CN206638623 U CN 206638623U CN 201720026757 U CN201720026757 U CN 201720026757U CN 206638623 U CN206638623 U CN 206638623U
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- 238000001514 detection method Methods 0.000 title claims abstract description 18
- 238000012512 characterization method Methods 0.000 title claims abstract description 8
- 238000012360 testing method Methods 0.000 claims abstract description 56
- 238000003908 quality control method Methods 0.000 claims abstract description 28
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 12
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 12
- 238000011084 recovery Methods 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims description 3
- 210000004556 brain Anatomy 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 19
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000000740 bleeding effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004949 mass spectrometry Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 206010007269 Carcinogenicity Diseases 0.000 description 1
- 229910001308 Zinc ferrite Inorganic materials 0.000 description 1
- 230000007670 carcinogenicity Effects 0.000 description 1
- 231100000260 carcinogenicity Toxicity 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
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- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
It the utility model is related to a kind of detection means of accurate Characterization volatile organic compoundses sensor.The utility model is made up of measure loop, recovery loop, mechanism for testing and valve actuating mechanism；Measure loop connects air pump all the way for test intake valve, test quality controls meter, test tank, test air outlet valve；It is that synthesis of air bottle draws two-way to recover loop, and connecting humidity all the way for wet air quality control meter matches somebody with somebody trial jar, and another way is dry air quality control meter, and air inlet valve is connected after merging；Mechanism for testing is that power adapter connects data acquisition unit and connects sensor, reconnects computer；Valve actuating mechanism is connecting test loop, recovers loop and sets the proportioning case of pressure gauge, electric fan.The utility model overcomes the defects such as easily generation is drifted about, cost height is low with sensitivity.The utility model test result is accurate, reduces the testing time, realizes the accurate detection to volatile organic compoundses under different humidity environment.
Description
Technical field
Detection means is the utility model is related to, more particularly to a kind of accurate Characterization volatile organic compoundses sensor performance
Detection means.
Background technology
Volatile organic compoundses (VOCs) refer to the hydrocarbon that saturated vapour pressure is relatively low, readily volatilized under normal temperature and
Its derivative is denitrification, another pollution sources outside little particle.Volatile organic compoundses largely have toxicity, excitant
And carcinogenicity, environmental pollution can be caused, also can seriously damage health.In recent years, due to China's haze weather increasingly
Seriously, country also increasingly payes attention to VOCs pollution problem, and has put into effect the discharge of relevant regulations control pernicious gas, ensures
The safety of ecological environment and the health of human body.All needed in numerous areas such as Chemical Manufacture, environmental protection, medicine and construction materials
VOCs is detected, detection and early warning.Therefore development cost is low, the accurate detection means high, that detection range is wide of measurement is non-
Often it is necessary.
Before the present utility model, there is researcher to use gas chromatograph, mass spectrometry, photoionization
Test detection and fiber optics sensing equipment is detected.But although gas chromatograph and mass spectrometry test result can
Lean on, but detection device volume is larger, cost is higher, test period length, is not suitable for large-scale application.Semi-conductor gas senses
Device, cost is low, response is fast, high sensitivity, has good commercial application prospect.But gas sensor easily drifts about, need
Periodically sensor performance is demarcated, it is therefore desirable to it is a kind of low cost, easy to operate, and can be in different test environments
Inside reach the apparatus of accurate, quick sign volatile organic compoundses sensor.
Utility model content
The purpose of this utility model, which is that, overcomes drawbacks described above, develops a kind of accurate Characterization volatile organic compoundses and passes
The detection means of sensor performance.
The technical solution adopted in the utility model is：
A kind of detection means of accurate Characterization volatile organic compoundses sensor performance, it is mainly characterized by by examining
Survey time road, recover loop, mechanism for testing and valve actuating mechanism composition；The measure loop connects air pump, air pump for test intake valve
Connecting test quality control meter, test quality control meter connecting test tank, test tank connecting test air outlet valve；The recovery loop
Two-way is drawn for synthesis of air bottle, connecting humidity all the way for wet air quality control meter matches somebody with somebody trial jar, and another way is dry air
Quality control meter, air inlet valve is connected after merging；The mechanism for testing is that power adapter connects data acquisition unit and connected
Sensor, reconnect computer；The valve actuating mechanism is connecting test loop, recovers loop and sets pressure gauge, electric fan to match somebody with somebody
Compare case.
Sensor is set in the test tank of the measure loop.
The advantages of the utility model and effect, which are to match each interface on case, switch independent control, organic volatile
Property gas and synthesis of air can be separately injected into, injection synthesis of air can be desorbed sensor, resistance value is returned to initial value.
Whole set-up procedure be able to can be completed in 5 minutes.Due to the control of quality control meter and pressure gauge, test result is more
Accurately, by preparing different humidity environment, humidity operating environment can be simulated, so when the device can effectively reduce test
Between, realize the accurate detection to volatile organic compoundses under different humidity environment.
Brief description of the drawings
Fig. 1 --- the utility model principle schematic diagram.
Fig. 2 --- the utility model is to ZnFe2O4Sensor carries out the result schematic diagram of acetone gas test.
Component names corresponding to each label expression are as follows in figure：
Computer 1, data acquisition unit 2, power adapter 3, test quality control meter 4, air pump 5, test intake valve 6, test
Air outlet valve 7, air inlet valve 8, pressure gauge 9, proportioning case 10, electric fan 11, liquid injection hole 12, air bleeding valve 13, wet air
Quality control meter 14, dry air quality control meter 15, humidity are with trial jar 16, test tank 17, sensor 18, synthesis of air bottle
19。
Embodiment
As shown in fig. 1：
The utility model is made up of measure loop, recovery loop, mechanism for testing and valve actuating mechanism, and component devices own
Part, 19 in addition to synthesis of air bottle outside, be both placed on air-sensitive testboard.It will be surveyed with threaded connection successively by testing pipeline
Examination intake valve 6, air pump 5, test quality control meter 4, the test tank 17 equipped with sensor 18 and test air outlet valve 7 are connected, so as to
Form measure loop；In the front of measure loop, the gas in 19 in synthesis of air bottle is drawn with test pipeline and is divided into two
Road, all the way to match somebody with somebody trial jar 16, wherein pipeline and wet air matter with the wet air quality control meter 14 and humidity of placed in series
Amount control meter 14 is threaded connection, and another way is dry air quality control meter 15, and it is with being connected wet air quality control meter
14 and humidity with trial jar 16 to be connected in parallel, the test pipeline of shunting is matched somebody with somebody by dry air quality control meter 15 and humidity
It is combined into after trial jar 16 and proportioning case 9 is returned to by air inlet valve 8 all the way, this set mechanism composition recovers loop.In measure loop
Rear, power adapter 3, data acquisition unit 2 are connected by wire with sensor, are carried out temperature control and data acquisition, are obtained
Data shown by computer, so as to form mechanism for testing.It is connected with measure loop, recovery loop in simultaneously and has pressure
Table 9, the proportioning case 10 of electric fan 11 form valve actuating mechanism.Its concrete structure is as shown in Figure 1.
The utility model application process briefly explains：
A period of time is vacuumized by case 11 is matched using air pump 5 before test, opens synthesis of air bottle 19 afterwards, synthesis is empty
Gas is divided into two-way through pipeline, and a-road-through crosses humidity turns into wet air (humidity 100%) with trial jar 16, is passed directly into all the way
Dry air quality control meter 15, wet air quality control meter 14 and dry air quality control meter 15 are passed through by control
The gas flow of (500ml/min-1000ml/min), control the moisture content of air in tube.Air with fixed humidity leads to
Cross air inlet valve 8 to be passed through into proportioning case 10, when the when number of pressure gauge 9 is normal, closes air inlet valve 8 and synthesis is empty
Gas cylinder 19.Volatile organic compoundses are injected through liquid injection hole 12, such as methanol, ethanol, acetone, toluene, pass through electric fan 11
Accelerate gas diffusion velocity, obtain the VOCs gases of concentration fixation.Open valve test intake valve 6, test air outlet valve 7, proportioning
Gas in case 11 is pumped in the presence of air pump 5 to test quality control meter 4, by controlling test quality control meter 4
(50mL/min-200mL/min) come control injection test tank 17 in gas flow, sensor 18 by power supply with know device 3 carry out
Heating, caused resistance variations are received by data acquisition unit 2 and are sent to computer 1, and detected gas is by testing air outlet valve
7 return in proportioning case.After sensor response terminates, air inlet valve 8, synthesis of air bottle 19 and air bleeding valve 13 are opened, is opened
Recover loop, pass through wet air quality control meter 14, dry air quality control meter 15 (500mL/min-1000mL/min)
By in the gas injection proportioning case 10 of fixed humidity, progressively obtain background gas, recover sensor, excessive gas is by being vented
Valve 13 is discharged through pipeline.
The utility model can enter Mobile state to a variety of volatile organic compoundses in different humidity situation and accurately detect, this
Detection device by the equipment accuracy controllings such as pressure gauge, quality control meter detect environment so that detection data more it is accurate its
Accurate testing result is as shown in Figure 2.
Claims (2)
1. a kind of detection means of accurate Characterization volatile organic compoundses sensor, it is characterised in that by measure loop, be restored back to
Road, mechanism for testing and valve actuating mechanism composition；The measure loop connects air pump, air pump connecting test quality control for test intake valve
System meter, test quality control meter connecting test tank, test tank connecting test air outlet valve；The recovery loop is that synthesis of air bottle draws
Go out two-way, connecting humidity all the way for wet air quality control meter matches somebody with somebody trial jar, and another way is dry air quality control meter, is merged
Air inlet valve is connected afterwards；The mechanism for testing is that power adapter connects data acquisition unit and connects sensor, reconnects electricity
Brain；The valve actuating mechanism is connecting test loop, recovers loop and sets the proportioning case of pressure gauge, electric fan.
2. a kind of detection means of accurate Characterization volatile organic compoundses sensor according to claim 1, its feature exist
Sensor is set in the test tank of the measure loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720026757.7U CN206638623U (en) | 2017-01-05 | 2017-01-05 | A kind of detection means of accurate Characterization volatile organic compoundses sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720026757.7U CN206638623U (en) | 2017-01-05 | 2017-01-05 | A kind of detection means of accurate Characterization volatile organic compoundses sensor |
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| Publication Number | Publication Date |
|---|---|
| CN206638623U true CN206638623U (en) | 2017-11-14 |
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ID=60261748
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720026757.7U Expired - Fee Related CN206638623U (en) | 2017-01-05 | 2017-01-05 | A kind of detection means of accurate Characterization volatile organic compoundses sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN206638623U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109932490A (en) * | 2019-03-20 | 2019-06-25 | 西安航空学院 | Gas pretreatment device with reverse pumping function and gas detection device |
-
2017
- 2017-01-05 CN CN201720026757.7U patent/CN206638623U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109932490A (en) * | 2019-03-20 | 2019-06-25 | 西安航空学院 | Gas pretreatment device with reverse pumping function and gas detection device |
| CN109932490B (en) * | 2019-03-20 | 2024-02-13 | 西安航空学院 | Gas pretreatment device with back-pumping function and gas detection device |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171114 |