CN205280647U - Mixed potential sensor - Google Patents
Mixed potential sensor Download PDFInfo
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- CN205280647U CN205280647U CN201521059383.6U CN201521059383U CN205280647U CN 205280647 U CN205280647 U CN 205280647U CN 201521059383 U CN201521059383 U CN 201521059383U CN 205280647 U CN205280647 U CN 205280647U
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Abstract
The utility model discloses a mixed potential sensor aims at providing the mixed potential sensor that can portably, fast, accurately detect the gaseous NOx (NO2+NO) of nitrogen oxide, carbon monoxide CO and oxygen content simultaneously. The utility model discloses a by lower supreme superimposed oxygen content measuring unit in proper order (1), pt electrode heating unit (2), carbon oxygen compound and nitrogen oxygen compound measuring unit (3) three, combine through isostatic pressing and sintering between the individual part. The utility model discloses be applied to mixed potential sensor's technical field.
Description
Technical field
This utility model relates to a kind of mixed potential sensors, particularly to a kind of mixed potential sensors possessing measurement of oxygen content unit, Pt heated by electrodes unit, hydrocarbon and oxynitride measuring unit.
Background technology
In recent years, along with surging of world car consumption, the automobile exhaust pollution problem brought therewith is on the rise. Some cities are changed into by the coal-smoke pollution in past based on vehicle emission pollution. Oxides of nitrogen gas NOx(NO in vehicle exhaust2+ NO) and the discharge of the gas such as CO can damage the ozone layer, cause acid rain and photochemical fog, to the living environment of the mankind with healthy constitute serious threat. Current improvement means mainly use triple mode catalytic converter to reduce the exhaust pollution of electromotor, and wherein oxygen sensor is requisite element. Owing to the air-fuel ratio of gaseous mixture is once deviation theory air-fuel ratio, the detergent power of CO, HC and NOx will sharply be declined by three-way catalyst, therefore oxygen sensor is installed in exhaustor, in order to detect the concentration of oxygen in aerofluxus, and send feedback signal to ECU, the increase and decrease of fuel injector distributive value is controlled again by ECU, thus by the air-fuel ration control of gaseous mixture near theoretical value, but traditional oxygen sensor is merely able to measure the information that in the aerofluxus after engine combustion, whether oxygen is superfluous, i.e. oxygen content, for the oxides of nitrogen gas NOx(NO in aerofluxus2+ NO) and the gas such as CO can not play detection effect, and oxygen sensor is at oxides of nitrogen gas NOx(NO2+ NO) and the atmosphere that exists of the gas such as CO in can produce abnormal electromotive force, that is the oxygen content detection signal that now oxygen sensor sends has certain deviation, the closed loop control making ECU can not accurately control very much air-fuel ratio, the nox in exhaust gas NOx(NO of electromotor2+ NO) and the discharge of the gas such as CO can not reduce substantially, pollute environmental hazard health. It is badly in need of exploitation for this and is capable of measuring accurately and rapidly oxides of nitrogen gas NOx(NO in vehicle exhaust2+ NO), the device of carbon monoxide CO and oxygen content. Traditional NOx detecting device (e.g., chemical luminescence detector, chromatograph etc.) is although having higher sensitivity and relatively low detection limit, but device is complicated, expensive, and can not realize the on-the-spot monitoring continuously of NOx, is also not easy to the installation on automobile.
Utility model content
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, it is provided that one can simultaneously easy, detection oxides of nitrogen gas NOx(NO quickly and accurately2+ NO), the mixed potential sensors of carbon monoxide CO and oxygen content.
The technical scheme is that this utility model of this utility model includes the measurement of oxygen content unit being sequentially overlapped from the bottom to top, Pt heated by electrodes unit, hydrocarbon and three parts of oxynitride measuring unit, described measurement of oxygen content unit includes the first Zirconia electrolytic layer and the second Zirconia electrolytic layer that are sequentially overlapped from the bottom to top, the top and bottom of described first Zirconia electrolytic layer are printed with interior work Pt electrode and outer work Pt electrode respectively, described outer work Pt electrode be printed with porous protective layer further below, described Pt heated by electrodes unit includes the 3rd Zirconia electrolytic layer being sequentially overlapped from the bottom to top, Pt heater circuit printing layer and the 4th Zirconia electrolytic layer, described hydrocarbon and oxynitride measuring unit include the 5th Zirconia electrolytic layer and the 6th Zirconia electrolytic layer that are sequentially overlapped from the bottom to top, the top and bottom of wherein said 6th Zirconia electrolytic layer are printed with porous oxidation Asia nickel printing layer and porous strontium lanthanum manganese oxide printing layer respectively, it is printed with porous air channel layer below described porous strontium lanthanum manganese oxide printing layer.
The top and bottom of described Pt heater circuit printing layer are also printed with the first alumina insulation printing layer and the second alumina insulation printing layer respectively.
Below described second Zirconia electrolytic layer, corresponding described interior work Pt electrode place is provided with air duct.
The afterbody of described porous oxidation Asia nickel printing layer and described porous strontium lanthanum manganese oxide printing layer adopts Precious Metal printing to form conducting wire and electrode.
The beneficial effects of the utility model are: owing to this utility model includes the measurement of oxygen content unit that is sequentially overlapped from the bottom to top, Pt heated by electrodes unit, hydrocarbon and three parts of oxynitride measuring unit, described measurement of oxygen content unit includes the first Zirconia electrolytic layer and the second Zirconia electrolytic layer that are sequentially overlapped from the bottom to top, the top and bottom of described first Zirconia electrolytic layer are printed with interior work Pt electrode and outer work Pt electrode respectively, described outer work Pt electrode be printed with porous protective layer further below, described Pt heated by electrodes unit includes the 3rd Zirconia electrolytic layer being sequentially overlapped from the bottom to top, Pt heater circuit printing layer and the 4th Zirconia electrolytic layer, described hydrocarbon and oxynitride measuring unit include the 5th Zirconia electrolytic layer and the 6th Zirconia electrolytic layer that are sequentially overlapped from the bottom to top, the top and bottom of wherein said 6th Zirconia electrolytic layer are printed with porous oxidation Asia nickel printing layer and porous strontium lanthanum manganese oxide printing layer respectively, it is printed with porous air channel layer below described porous strontium lanthanum manganese oxide printing layer. so achieving simplicity, quickly and accurately detection oxides of nitrogen gas NOx(NO by measurement of oxygen content unit, Pt heated by electrodes unit, hydrocarbon and the oxynitride measuring unit being superimposed together2+ NO), the content of carbon monoxide CO and oxygen.
As a kind of improvement of the present utility model, the top and bottom of described Pt heater circuit printing layer are also printed with the first alumina insulation printing layer and the second alumina insulation printing layer respectively, by this mechanism, it is possible to prevent Pt heater circuit from must heat the current signal measuring unit on both sides and produce impact.
Accompanying drawing explanation
Fig. 1 is complete section structural representation of the present utility model.
Detailed description of the invention
As shown in Figure 1, in the present embodiment, described mixed potential sensors includes the measurement of oxygen content unit 1 being sequentially overlapped from the bottom to top, Pt heated by electrodes unit 2, hydrocarbon and 3 three parts of oxynitride measuring unit, described measurement of oxygen content unit 1 includes the first Zirconia electrolytic layer 11 and the second Zirconia electrolytic layer 12 being sequentially overlapped from the bottom to top, the top and bottom of described first Zirconia electrolytic layer 11 are printed with interior work Pt electrode 13 and outer work Pt electrode 14 respectively, described outer work Pt electrode 14 be printed with porous protective layer 15 further below, described Pt heated by electrodes unit 2 includes the 3rd Zirconia electrolytic layer 21 being sequentially overlapped from the bottom to top, Pt heater circuit printing layer 22 and the 4th Zirconia electrolytic layer 23, described hydrocarbon and oxynitride measuring unit 3 include the 5th Zirconia electrolytic layer 31 and the 6th Zirconia electrolytic layer 32 being sequentially overlapped from the bottom to top, the top and bottom of wherein said 6th Zirconia electrolytic layer 32 are printed with porous oxidation Asia nickel printing layer 33 and porous strontium lanthanum manganese oxide printing layer 34 respectively, it is printed with porous air channel layer 35 below described porous strontium lanthanum manganese oxide printing layer 34. simplicity, quickly and accurately detection oxides of nitrogen gas NOx(NO is achieved by the measurement of oxygen content unit 1 being superimposed together, Pt heated by electrodes unit 2, hydrocarbon and oxynitride measuring unit 32+ NO), the content of carbon monoxide CO and oxygen. This structure is middle heating arrangement, two-sided measurement unit can be made simultaneously to be heated, be heated rapid and uniform, single either above or below can be avoided to cause too high internal stress to heating.
In the present embodiment, the top and bottom of described Pt heater circuit printing layer 22 are also printed with the first alumina insulation printing layer 24 and the second alumina insulation printing layer 25 respectively. It is possible to prevent Pt heater circuit must heat the current signal measuring unit on both sides and produces impact.
In the present embodiment, described second Zirconia electrolytic layer 12 corresponding described interior work Pt electrode 13 place below is provided with air duct 121.
In the present embodiment, the afterbody of described porous oxidation Asia nickel printing layer 33 and described porous strontium lanthanum manganese oxide printing layer 34 adopts Precious Metal printing to form conducting wire and electrode.
In the present embodiment, the thickness of described first to the 6th Zirconia electrolytic layer is 0.3+/-0.03mm, the thickness of described first and second alumina insulation printing layers is 0.1-0.3mm, the thickness 0.3+/-0.03mm of described air duct 121, by each Zirconia electrolytic layer being completed for printing and described air duct 121 layers lamination in order, then isostatic pressed 25-30MPa, form lamination base substrate, cut after isostatic pressing, sensor base substrate is challenge in formation by oneself, the thickest temperature 2 hours by sintering furnace with 1420-14800 DEG C, sintering prepares described mixed potential sensors.
This utility model is applied to the technical field of mixed potential sensors.
Although embodiment of the present utility model describes with practical solution, but it is not intended that the restriction to this utility model implication, for those skilled in the art, the combination according to this specification amendment to its embodiment and with other schemes will be apparent from.
Claims (4)
1. a mixed potential sensors, it is characterized in that: it includes the measurement of oxygen content unit (1) being sequentially overlapped from the bottom to top, Pt heated by electrodes unit (2), hydrocarbon and (3) three parts of oxynitride measuring unit, described measurement of oxygen content unit (1) includes the first Zirconia electrolytic layer (11) and the second Zirconia electrolytic layer (12) that are sequentially overlapped from the bottom to top, the top and bottom of described first Zirconia electrolytic layer (11) are printed with interior work Pt electrode (13) and outer work Pt electrode (14) respectively, described outer work Pt electrode (14) be printed with porous protective layer (15) further below, described Pt heated by electrodes unit (2) includes the 3rd Zirconia electrolytic layer (21) being sequentially overlapped from the bottom to top, Pt heater circuit printing layer (22) and the 4th Zirconia electrolytic layer (23), described hydrocarbon and oxynitride measuring unit (3) include the 5th Zirconia electrolytic layer (31) and the 6th Zirconia electrolytic layer (32) that are sequentially overlapped from the bottom to top, the top and bottom of wherein said 6th Zirconia electrolytic layer (32) are printed with porous oxidation Asia nickel printing layer (33) and porous strontium lanthanum manganese oxide printing layer (34) respectively, it is printed with porous air channel layer (35) below described porous strontium lanthanum manganese oxide printing layer (34).
2. mixed potential sensors according to claim 1, it is characterised in that: the top and bottom of described Pt heater circuit printing layer (22) are also printed with the first alumina insulation printing layer (24) and the second alumina insulation printing layer (25) respectively.
3. mixed potential sensors according to claim 1, it is characterised in that: described second Zirconia electrolytic layer (12) corresponding described interior work Pt electrode (13) place below is provided with air duct (121).
4. mixed potential sensors according to claim 1, it is characterised in that: the afterbody of described porous oxidation Asia nickel printing layer (33) and described porous strontium lanthanum manganese oxide printing layer (34) adopts Precious Metal printing to form conducting wire and electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521059383.6U CN205280647U (en) | 2015-12-18 | 2015-12-18 | Mixed potential sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521059383.6U CN205280647U (en) | 2015-12-18 | 2015-12-18 | Mixed potential sensor |
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| CN205280647U true CN205280647U (en) | 2016-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521059383.6U Expired - Fee Related CN205280647U (en) | 2015-12-18 | 2015-12-18 | Mixed potential sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019085995A1 (en) * | 2017-11-03 | 2019-05-09 | 深圳市森世泰科技有限公司 | Gas sensor and ceramic chip therefor |
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2015
- 2015-12-18 CN CN201521059383.6U patent/CN205280647U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019085995A1 (en) * | 2017-11-03 | 2019-05-09 | 深圳市森世泰科技有限公司 | Gas sensor and ceramic chip therefor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160601 Termination date: 20161218 |
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| CF01 | Termination of patent right due to non-payment of annual fee |