CN107991344A - A kind of gas sensor performance testing device - Google Patents
A kind of gas sensor performance testing device Download PDFInfo
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- CN107991344A CN107991344A CN201711432831.6A CN201711432831A CN107991344A CN 107991344 A CN107991344 A CN 107991344A CN 201711432831 A CN201711432831 A CN 201711432831A CN 107991344 A CN107991344 A CN 107991344A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
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Abstract
The invention discloses a kind of gas sensor performance testing device, belong to detection device technical field.Gas sensor performance testing device, including to distribution and providing the test babinet of measurement atmosphere, the both ends of the test babinet are external using tracheae and connect composition bypass, and circulation air pump is equipped with the bypass, and opening the circulation air pump mixes gas circulating flow in the test babinet.Using the airflow circulating of bypass, accelerate gas mixing, avoid test error.And four-way valve is connected in bypass, it is convenient to connect exhaust emissions by switching linking objective source of the gas and exhaust emissions, and realize the functions such as gas washing, distribution, dynamic test, there is wide applicability.
Description
Technical field
The present invention relates to a kind of gas sensor performance testing device, belong to detection device technical field.
Background technology
Gas sensor refers to the device to certain gas sensitization, is component in corresponding gaseous environment gas, dense
Electronic component of the detection such as degree to induction signal.Gas sensor or to prepare the sensitive material of gas sensor, its performance parameter
Quality be an important factor for determining the quality of made gas sensor, so being ground to gas sensor performance test
Study carefully and produce very necessary in gas sensor work.It is a large amount of that gas sensor performance test work includes distribution, test, calculating etc.
Numerous and diverse work, facilitates handy test equipment to be greatly enhanced work efficiency.
The basic composition of gas sensor performance testing device includes testing babinet and being arranged in test babinet carrying signal
The sample test platform of interface, test babinet provide measurement atmosphere, and sample stage connects element under test as test module and collects biography
Feel signal.
In the prior art, the gas sample that test babinet is injected when configuring target atmosphere is gradually dispersed in whole babinet,
This process causes to survey gas sensor detection signal lag.Only atmosphere can just carry out gas sensor inspection to be measured after being sufficiently mixed uniformly
Survey, signal is only desirable exact value at this time.Such gas sensor performance test apparatus work efficiency is low, and cannot accomplish fast
Fast dynamic online in real time is tested.
In addition, test device of the prior art lacks corresponding gas washing and exhaust emissions processing, measurement atmosphere is vulnerable to
The influence of babinet residual gas is tested, causes resultant error.And gas sensor performance test, which often also includes part with atmosphere, to be had
Malicious pernicious gas, testing end every time needs opening distribution babinet atmosphere therein is diffused into air, so device needs to pacify
Putting could use in the air exhaust environments such as fume hood.Such as cannot effectively it protect, the work to the research of long campaigns gas sensor
Personnel cause health hazard.
In view of foregoing existing technical problem, developing a kind of efficient gas sensor performance testing device of mixed gas has in fact
Use meaning.
The content of the invention
To solve the above-mentioned problems, the present invention provides a kind of gas sensor performance testing device that can quickly mix gas.Institute
The technical solution of use is as follows：
A kind of gas sensor performance testing device, including to distribution and provide the test babinet of measurement atmosphere, the survey
The both ends of examination babinet are external using tracheae and connect composition bypass, and circulation air pump is equipped with the bypass, followed described in unlatching
Ring air pump mixes gas circulating flow in the test babinet.
Further, four-way valve is further included, the four-way valve is connected in the bypass by two adjacent interfaces, and another two
A interface connects source of the gas and picks out exhaust emissions pipeline respectively, make by switch the four-way valve make it is described bypass connection source of the gas with
Gas is injected into the test babinet, tail gas is discharged by exhaust emissions pipeline.
Further, by the air guide direction of the circulation air pump, by air inlet to outlet order, the order of connection of each component according to
It is secondary to be：
Source of the gas --- four-way valve --- test babinet --- circulation air pump --- exhaust emissions pipeline.
Further, the source of the gas includes carrier gas or object gas to be checked；The carrier gas is inert gas or air.
Further, the exhaust emissions pipeline connection exhaust equipment or toxic and harmful gas processing equipment.
Further, the circulation air pump is peristaltic pump, after the flow velocity for measuring peristaltic pump, can determine that by timing and passes through the pump housing
Flow.
Further, the interface of the corresponding bypass is equipped with outlet module in the test box body；The outlet
The body of module is the cylindrical shape of end closure, and the gas outlet circumferentially arranged is opened up in side.
Further, the gas outlet is bar gap-like, its strip direction and axially inclined about 10-45 ° of angle.
Using preceding solution, compared with prior art, the gas sensor performance testing device at least have with
Lower beneficial effect：
(1) using the airflow circulating of bypass, and the setting of outlet module improves mixed gas efficiency, accelerates gas mixing, keeps away
Exempt from test error；
(2) carrier gas can access by four-way Vavle switching, be passed through carrier gas certain time can quickly will test babinet in impurity
Gas is discharged, and improves testing efficiency, and avoid the interference of foreign gas；
(3) source of the gas equipped with object gas to be checked and is conveniently connected, being passed directly into test babinet can realize in real time online
Dynamic detection；
(4) after or by carrier gas gas washing, target source of the gas, the ON cycle air pump such as the collection airbag of switching equipped with object gas are simultaneously counted
When, the mixed gaseity of circulation is switched back into after bringing quantitative object gas into, distribution and static test can be achieved in once-through operation；
(5) and exhaust emissions, more environmentally friendly, science are conveniently connected, and avoids tester and poisonous and harmful test gas
Excessive contact, ensure that tester's is healthy and safe.
In conclusion the present invention provides the gas sensor performance testing device system of a set of high-efficiency multi-use, have extensive
Practicality.
Brief description of the drawings
Fig. 1 is the structure diagram of the gas sensor performance testing device of the present invention, is that atmosphere circulates admixture in figure；
Fig. 2 is the gas washing of gas sensor performance testing device and the structure diagram of exhaust condition of the present invention；
Fig. 3 is the structure diagram of the gas outlet in the gas sensor performance testing device of the present invention.
Embodiment
For the technological means and beneficial effect that the present invention is further explained, below in conjunction with attached drawing and preferred embodiment, to this
The embodiment of invention describes in detail：
As shown in attached drawing 1,2, gas sensor performance testing device is included to provide the test babinet 4 of measurement atmosphere,
Its both ends is external using tracheae and connects composition bypass, and circulation air pump 2 is equipped with bypass, and circulation air pump 2 is peristaltic pump.
The interface of corresponding bypass is equipped with outlet module 3,5 in test babinet 4.As shown in Figure 3, outlet module 3,5
Body 3-a be cylindrical shape, end closed by end cap 3-c, and the gas outlet 3-b circumferentially arranged is opened up in side.Gas outlet 3-b
For bar gap-like, its strip direction and axially inclined about 10-45 ° of angle.
Bypass is equipped with four-way valve 1, in its two neighboring interface connection bypass, another two interface connect respectively source of the gas 7 and
Pick out exhaust emissions pipeline 6；Source of the gas 7 can connect inert gas or air as carrier gas, or connection object gas to be checked；Tail gas is arranged
Put pipeline 6 and be connected to the exhaust equipments such as fume hood.
By the air guide direction of circulation air pump 2, by air inlet to outlet order, the order of connection of each component is followed successively by：
--- --- test babinet 4 --- circulation air pump 2 --- the exhaust emissions pipeline 6 of four-way valve 1 of source of the gas 7.
During test, switching four-way valve 1 access carrier gas, be passed through carrier gas certain time quickly will test babinet 4 in impurity gas
Body is discharged, and improves testing efficiency, and avoid the interference of foreign gas；Source of the gas of 7 interface of the source of the gas connection equipped with object gas to be checked,
It is passed directly into test babinet 4 and realizes real-time dynamic on-line monitoring；Or by carrier gas gas washing after, source of the gas 7 switching object gas is housed
Collection airbag, ON cycle air pump 2 and timing, the mixed gaseity of circulation, once-through operation are switched back into after bringing quantitative object gas into
Complete distribution and static test.
Above description is the embodiment of the present invention, and each illustrate does not form limit to the substantive content of the present invention
System, person of ordinary skill in the field make an amendment or deform to foregoing embodiment, without departing substantially from the essence of the present invention.
Claims (8)
1. a kind of gas sensor performance testing device, including to distribution and the test babinet of measurement atmosphere is provided, its feature exists
It is external using tracheae at its both ends and connect composition bypass in, the test babinet, and circulating air is equipped with the bypass
Pump, opening the circulation air pump mixes gas circulating flow in the test babinet.
2. gas sensor performance testing device as claimed in claim 1, it is characterised in that further include four-way valve, the four-way
Valve is connected in the bypass by two adjacent interfaces, and another two interface connects source of the gas and picks out exhaust emissions pipeline respectively,
Make to make the bypass connect source of the gas to inject gas into the test babinet by switching the four-way valve, tail gas is arranged by tail gas
Put pipeline discharge.
3. gas sensor performance testing device as claimed in claim 2, it is characterised in that by the air guide side of the circulation air pump
To by air inlet to outlet order, the order of connection of each component is followed successively by：Source of the gas --- four-way valve --- test babinet --- circulation
Air pump --- exhaust emissions pipeline.
4. gas sensor performance testing device as claimed in claim 2, it is characterised in that the source of the gas includes carrier gas or to be checked
Object gas；The carrier gas is inert gas or air.
5. gas sensor performance testing device as claimed in claim 2, it is characterised in that the exhaust emissions pipeline connection row
Wind devices or toxic and harmful gas processing equipment.
6. gas sensor performance testing device as claimed in claim 1, it is characterised in that the circulation air pump is peristaltic pump.
7. gas sensor performance testing device as claimed in claim 1, it is characterised in that corresponding in the test box body
The interface of the bypass is equipped with outlet module；
The outlet module, its body are the cylindrical shape of end closure, and the gas outlet circumferentially arranged is opened up in side.
8. gas sensor performance testing device as claimed in claim 7, it is characterised in that the gas outlet is bar gap-like, its
Strip direction and axially inclined about 10-45 ° of angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711432831.6A CN107991344A (en) | 2017-12-26 | 2017-12-26 | A kind of gas sensor performance testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711432831.6A CN107991344A (en) | 2017-12-26 | 2017-12-26 | A kind of gas sensor performance testing device |
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| CN107991344A true CN107991344A (en) | 2018-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711432831.6A Pending CN107991344A (en) | 2017-12-26 | 2017-12-26 | A kind of gas sensor performance testing device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110470800A (en) * | 2019-08-27 | 2019-11-19 | 武汉科技大学 | A kind of air distribution system and method for NOx sensor calibration |
| CN110596311A (en) * | 2019-08-05 | 2019-12-20 | 苏州迈优医疗科技有限公司 | Novel multichannel exhaled gas analyzer and operation method |
| CN110596310A (en) * | 2019-08-05 | 2019-12-20 | 苏州迈优医疗科技有限公司 | Exhaled gas analyzer and operation method |
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| CN202393754U (en) * | 2011-11-09 | 2012-08-22 | 上海交通大学 | Gas circulating device for gas-sensitive sensor performance testing |
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| WO2017133616A1 (en) * | 2016-02-01 | 2017-08-10 | 武汉清琪科技有限公司 | Gas-sensitive component, gas-sensitive device and system |
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Patent Citations (6)
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| CN202393754U (en) * | 2011-11-09 | 2012-08-22 | 上海交通大学 | Gas circulating device for gas-sensitive sensor performance testing |
| JP2015145812A (en) * | 2014-02-03 | 2015-08-13 | 富士通株式会社 | gas sensor and gas monitoring system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110596311A (en) * | 2019-08-05 | 2019-12-20 | 苏州迈优医疗科技有限公司 | Novel multichannel exhaled gas analyzer and operation method |
| CN110596310A (en) * | 2019-08-05 | 2019-12-20 | 苏州迈优医疗科技有限公司 | Exhaled gas analyzer and operation method |
| CN110596310B (en) * | 2019-08-05 | 2023-03-10 | 苏州迈优医疗科技有限公司 | Exhaled gas analyzer and operation method |
| CN110470800A (en) * | 2019-08-27 | 2019-11-19 | 武汉科技大学 | A kind of air distribution system and method for NOx sensor calibration |
| CN110470800B (en) * | 2019-08-27 | 2022-08-16 | 武汉科技大学 | Gas distribution system and method for nitrogen oxide sensor calibration |
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