CN206772889U - Electrochemical carbon monoxide sensor - Google Patents
Electrochemical carbon monoxide sensor Download PDFInfo
- Publication number
- CN206772889U CN206772889U CN201720455278.7U CN201720455278U CN206772889U CN 206772889 U CN206772889 U CN 206772889U CN 201720455278 U CN201720455278 U CN 201720455278U CN 206772889 U CN206772889 U CN 206772889U
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- Prior art keywords
- gas
- connecting piece
- carbon monoxide
- electrode
- shell
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Abstract
The utility model discloses a kind of electrochemical carbon monoxide sensor, including shell, conductive tie layers and gas catalysis membrane electrode assembly, conductive tie layers are arranged on the bottom in shell, gas catalysis membrane electrode assembly is arranged on conductive tie layers, gas catalysis membrane electrode assembly enters gas cap and its filtering unit of interior setting by conduction from top to bottom, it is close to the electrode connecting piece of filtering unit lower end setting, it is close to the catalysis electrode piece composition of electrode connecting piece lower end setting, gas pilot hole is provided with electrode connecting piece, electric current transfer layer is provided with gas pilot hole, conductive tie layers and gas catalytic membrane electrode assemblie are embedded in in reeded sealing ring together, and it is integrally provided in the shell and forms sensor.The utility model more compact structure, carrying is more convenient, accuracy of detection is high, cost is low, output is stable and use range is wide.
Description
Technical field
Sensor application field is the utility model is related to, more particularly to a kind of electrochemical carbon monoxide sensor.
Background technology
The pernicious gases such as carbon monoxide, it is characterized in that colorless and odorless, is not easy to find；Danger is easily produced after suction, seriously
The injures and deaths of personnel can be caused；Detection for this pernicious gas, kind is also more at present, and most of detection instrument is work
Industry or large-scale experimental place.Inside uses the sensor main for detecting this pernicious gas to be passed with semiconductor, infrared ray
Sensor, liquid electrochemical sensor, semisolid electrochemical sensor.Semiconductor transducer mainly uses tin ash reaction mechanism,
Power consumption in use is very much not portable, and be affected by temperature it is big, the problems such as short life；Infrared ray sensor, though precision it is high into
This is also high, is not easy the common peopleization；Chemical sensor is then current people first choice in use, but the liquid in currently available technology
The shortcomings of short volume of water storage reaction container structural life-time is big used by state sensor, another aqueous water is readily volatilized, in production
Also easy leakage, it is affected by temperature limitation；Semisolid electrochemical sensor using acidic electrolyte bath because having corrosion and leakage feelings
Condition, and complex manufacturing, it is unfavorable for keeping the safety in production, is also easily affected by temperature, the life-span is influenceed by acidic liquid, Yi Hui
Hair, elapsing its sensitivity over time can also decline therewith.
Utility model content
The purpose of this utility model is that solve prior art and above mentioned problem, devises a kind of more compact structure, carries more
Pure solid-state electrochemistry carbon monoxide transducer convenient, accuracy of detection is high, cost is low, output is stable and use range is wide.
To reach above-mentioned purpose, the technical solution of the utility model is as follows：
Electrochemical carbon monoxide sensor, including shell, conductive tie layers and gas catalysis membrane electrode assembly, it is described to lead
Electric connection layer is arranged on the bottom in shell, and the gas catalysis membrane electrode assembly is arranged on the conductive tie layers, described
Gas catalysis membrane electrode assembly enters the filtering unit of gas cap and its interior setting by conduction from top to bottom, is close to gas filtration list
The electrode connecting piece of first lower end setting, the catalysis electrode piece composition for being close to the setting of electrode connecting piece lower end, the electrode connecting piece
On be provided with gas pilot hole, electric current transfer layer, the conductive tie layers and gas catalysis are provided with the gas pilot hole
Membrane electrode assembly is embedded in in reeded sealing ring together, and is integrally provided in the shell and is formed sensor.
Preferably, the shell using the strong steel body material of electric conductivity or uses dielectric dielectric material, described
Shell needs to draw a conductor wire when using dielectric dielectric material.
Preferably, the electrode connecting piece is drawn by the way of the strong steel body material of electric conductivity or use conductive lead wire,
The gas pilot hole vertically corresponds to the direction in the working electrode face of electrode connecting piece.
Preferably, the conduction enters gas cap using the stronger steel body material of electric conductivity.
Preferably, the conduction, which is entered, needs when gas cap uses dielectric dielectric material by its leading with electrode connecting piece
Electrical lead electrically connects.
Preferably, the conduction enters gas cap and offers gas conveying door or gas delivery holes.
Preferably, the filtering unit passes through in the good material of property for adsorbed gas material, the gas of activity
One or two composition.
Preferably, the electric current transfer layer is gas permeability height and the diaphragm of good conductivity.
Preferably, the gas pilot hole of electrode connecting piece enters CO gas in the gas catalysis membrane electrode assembly
When, catalysis electrode piece is in working electrode is catalyzed in face of gas and makes electrode that chemical oxidation reaction occur and changes into electric current
It is delivered in electrode connecting piece by electric current transfer layer, then is detected by shell body output.
Preferably, the shell uses nothing to be brought into close contact with electrode connecting piece.
Pass through above-mentioned technical proposal, electrochemical carbon monoxide sensor provided by the utility model, substitute existing liquid
The sensor of water storage reaction container, the problem of semisolid acidity electrochemical sensor, there is anticorrosion, the low technique of cost simplifies, body
The integrated level of the smaller auxiliary products of product is higher, while sensor for temperature influence is smaller, and its life-span is existing 2 times, reaction
Sensitivity is faster, linear more preferable.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art.
Fig. 1 is a kind of explosive view of electrochemical carbon monoxide sensor disclosed in the utility model embodiment；
Fig. 2 is a kind of structural representation of electrochemical carbon monoxide sensor disclosed in the utility model embodiment.
In figure：
1st, shell；2nd, conductive tie layers；3rd, conduction enters gas cap；4th, filtering unit；5th, electrode connecting piece；6th, catalysis electricity
Pole piece；7th, rubber blanket；8th, electric current transfer layer.
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 describe.
A kind of electrochemical carbon monoxide sensor provided by the utility model, as shown in Figure 1-2, including shell 1, conduction are even
Layer 2 and gas catalysis membrane electrode assembly are connect, the conductive tie layers 2 are arranged on the bottom in shell 1, the gas catalysis film
Electrode assemblie is arranged on the conductive tie layers 2, the gas catalysis membrane electrode assembly from top to bottom by conduction enter gas cap 3 and
Its interior filtering unit 4 set, it is close to the electrode connecting piece 5 of the lower end of filtering unit 4 setting, is close to electrode connecting piece
The catalysis electrode piece 6 that 5 lower ends are set forms, and the conduction enters gas cap 3 and offers gas conveying door or gas delivery holes, the gas
Body filter element 4 is made up of for adsorbed gas material, the gas of activity one or both of good material of property, the electricity
Gas pilot hole is provided with pole connection sheet 5, electric current transfer layer 8, the electric current transfer layer 8 are provided with the gas pilot hole
For gas permeability height and the diaphragm of good conductivity, the shell 1 is brought into close contact with electrode connecting piece 5 using nothing, described to be conductively connected
One layer of electrode connecting piece 5 is additionally provided between layer 2 and gas catalysis membrane electrode assembly, is easy to conductive tie layers 2 and gas catalysis
The connection of membrane electrode assembly, the conduction enter between gas cap 3 and filtering unit 4 to be provided with rubber blanket 7, play shockproof effect
Fruit, the conductive tie layers 2 and gas catalytic membrane electrode assemblie are embedded in in reeded sealing ring together, and are integrally provided in
Sensor is formed in the shell 1.Total configuration design is carried into button cell body, small volume, and install convenient
It is convenient.
When the gas pilot hole of electrode connecting piece 5 enters CO gas in the gas catalysis membrane electrode assembly, urge
Polarizing electrode piece 6 is in working electrode is catalyzed in face of gas and makes electrode that chemical oxidation reaction occur and changes into electric current by electricity
Stream transfer layer is delivered in electrode connecting piece, then is detected by the output of the body of shell 1.
Catalysis electrode piece 6 is operated the processing of layer and Catalytic Layer by handling dried PEMFC films, and specific processing can
Carried out with printing technology or spraying technology, catalytic mechanism material used can be processed by a certain percentage with noble metal platinum or palladium
Bonding, the post-processing time is short, and thermally processable and heat pressing process is to increase the viscosity of loading after processing PEMFC films
Degree, punching fitting is carried out after machining.
The shell 1 is using the strong steel body material of electric conductivity or uses dielectric dielectric material, and the shell 1 is adopted
Need to draw a conductor wire during with dielectric dielectric material.
The electrode connecting piece 5 is drawn by the way of the strong steel body material of electric conductivity or use conductive lead wire, the gas
Body pilot hole vertically corresponds to the direction in the working electrode face of electrode connecting piece 5.
The conduction enters gas cap 3 using the stronger steel body material of electric conductivity, and the conduction enters gas cap 3 using dielectric
Need to electrically connect it with the conductive lead wire of electrode connecting piece 5 during dielectric material.
The scope of application in the example of the utility model：
1st, this structure solid-state polymerization type fuel cell miniature equivalent to one, the stable current signal of main output, and
Carbonomonoxide concentration in the current signal and air of output is into good linear relationship.
2nd, this structure is fabulous for carbon monoxide susceptibility, can change internal structure difference mechanism and extend other types biography
Sensor.
3rd, this structure can substitute the semisolid electrochemical sensor under the conditions of prior art completely, and storage-type electrochemistry passes
Sensor.
The operation principle of the utility model embodiment is as follows：
1st, when include in atmosphere CO gas be diffused into it is conductive enter gas cap filtering unit on when, gas
CO gas is delivered in the gas pilot hole of electrode connecting piece by filter element, and filtering unit blocks other gas
Body is purified clean CO gas so as to inside.CO gas in gas pilot hole connects by electrode
Pilot hole on piece is sent on the working electrode face of catalysis electrode piece, by the catalyst that supports to an oxygen on catalysis electrode face
Change carbon gas and carry out catalysis neutralization so that the ion on electrode is moved with being converted to electric current to being swapped on electrode
Signal, this signal can be different so as to conversion capability according to the content of gas.The current signal so exported will be according to gas institute
Content exports the current signal of proportional relationship.
2nd, the fastness that the catalysis content that the catalysis electrode piece is supported has bonding is the speed of constant current signal movement,
So as to influence the performance of integral sensors.
The electric current output parameter of the utility model embodiment is as follows：
1st, the sensor output signal of this structure relation directly proportional to carbonomonoxide concentration；
2nd, it is consistent that the biosensor output parameter of this structure, which is not, between 3-6nA/PPM.
A kind of electrochemical carbon monoxide sensor disclosed in the utility model, substitute the biography of existing liquid water storage reaction container
Sensor, the problem of semisolid acidity electrochemical sensor, there is anticorrosion, the low technique of cost simplifies, the smaller auxiliary products of volume
Integrated level it is higher, while the sensor for temperature influence it is smaller, its life-span be existing 2 times, reaction sensitivity faster, linearly
More preferably.Meanwhile total is designed to button cell bodies, volume is smaller, and it is convenient that installation carries, and can be designed based on shell
Installation table top is slightly stayed for base plane or degree portion, has compact-sized, or easily may be used using non-conductive dielectric.Make full use of catalysis
Oxidation mechanism principle, CO gas is catalyzed into electric current output, so as to the detection to CO gas, detection gas are not
It is limited to CO gas, applicability is wider.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or new using this practicality
Type.A variety of modifications to these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments in the case where not departing from spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (10)
1. electrochemical carbon monoxide sensor, including shell, conductive tie layers and gas catalysis membrane electrode assembly, its feature
It is：The conductive tie layers are arranged on the bottom in shell, and the gas catalysis membrane electrode assembly is arranged on described be conductively connected
On layer, the gas catalysis membrane electrode assembly enters the filtering unit of gas cap and its interior setting by conduction from top to bottom, is close to
The electrode connecting piece of filtering unit lower end setting, the catalysis electrode piece composition for being close to the setting of electrode connecting piece lower end, it is described
Gas pilot hole is provided with electrode connecting piece, electric current transfer layer, the conductive tie layers are provided with the gas pilot hole
It is embedded in together with reeded sealing ring with gas catalytic membrane electrode assemblie, and is integrally provided in the shell and forms sensing
Device.
2. electrochemical carbon monoxide sensor according to claim 1, it is characterized in that：The shell is strong using electric conductivity
Steel body material or use dielectric dielectric material, the shell needs extraction one when using dielectric dielectric material
Root conductor wire.
3. electrochemical carbon monoxide sensor according to claim 1, it is characterized in that：The electrode connecting piece is using conductive
Property strong steel body material or drawn by the way of conductive lead wire, the gas pilot hole vertically corresponds to the work of electrode connecting piece
Make the direction of electrode surface.
4. electrochemical carbon monoxide sensor according to claim 1, it is characterized in that：The conduction enters gas cap using conductive
The stronger steel body material of property.
5. electrochemical carbon monoxide sensor according to claim 3, it is characterized in that：The conduction is entered gas cap and led using non-
Need to electrically connect it with the conductive lead wire of electrode connecting piece during electrical dielectric material.
6. electrochemical carbon monoxide sensor according to claim 1, it is characterized in that：The conduction enters gas cap and offers gas
Body conveys door or gas delivery holes.
7. electrochemical carbon monoxide sensor according to claim 1, it is characterized in that：The filtering unit is activity
Adsorbed gas material, gas pass through one or both of good material of property form.
8. electrochemical carbon monoxide sensor according to claim 1, it is characterized in that：The electric current transfer layer is gas permeability
High and good conductivity diaphragm.
9. electrochemical carbon monoxide sensor according to claim 1, it is characterized in that：The gas catalysis membrane electrode assembly
When the gas pilot hole of middle electrode connecting piece enters CO gas, catalysis electrode piece is urged in working electrode in face of gas
Changing neutralization makes electrode that chemical oxidation reaction occur and changes into electric current and be delivered to by electric current transfer layer in electrode connecting piece, then passes through
Shell body output is detected.
10. electrochemical carbon monoxide sensor according to claim 1, it is characterized in that：The shell and electrode connecting piece
It is brought into close contact using seamless.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720455278.7U CN206772889U (en) | 2017-04-27 | 2017-04-27 | Electrochemical carbon monoxide sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720455278.7U CN206772889U (en) | 2017-04-27 | 2017-04-27 | Electrochemical carbon monoxide sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206772889U true CN206772889U (en) | 2017-12-19 |
Family
ID=60635664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720455278.7U Withdrawn - After Issue CN206772889U (en) | 2017-04-27 | 2017-04-27 | Electrochemical carbon monoxide sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206772889U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106932451A (en) * | 2017-04-27 | 2017-07-07 | 无锡雷宏美电子科技有限公司 | Electrochemical carbon monoxide sensor |
| CN113376222A (en) * | 2021-06-08 | 2021-09-10 | 北京思众电子科技有限公司 | Novel methane sensor |
-
2017
- 2017-04-27 CN CN201720455278.7U patent/CN206772889U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106932451A (en) * | 2017-04-27 | 2017-07-07 | 无锡雷宏美电子科技有限公司 | Electrochemical carbon monoxide sensor |
| CN106932451B (en) * | 2017-04-27 | 2023-10-13 | 无锡雷宏美电子科技有限公司 | Electrochemical carbon monoxide sensor |
| CN113376222A (en) * | 2021-06-08 | 2021-09-10 | 北京思众电子科技有限公司 | Novel methane sensor |
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| GR01 | Patent grant | ||
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171219 Effective date of abandoning: 20230724 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20171219 Effective date of abandoning: 20230724 |