CN207601002U - Oxygen sensor zero self-checking device - Google Patents
Oxygen sensor zero self-checking device Download PDFInfo
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- CN207601002U CN207601002U CN201721817870.3U CN201721817870U CN207601002U CN 207601002 U CN207601002 U CN 207601002U CN 201721817870 U CN201721817870 U CN 201721817870U CN 207601002 U CN207601002 U CN 207601002U
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- gas
- way valves
- oxygen
- steering engine
- deoxidizing
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Abstract
The utility model discloses a kind of oxygen sensor zero self-checking devices, including gas circuit electric switch-over mechanism, device for deoxidizing, oxygen measurement unit and measure-controlling unit, gas circuit electric switch-over mechanism includes a steering engine and two position four-way valves, and steering engine connects the valve shaft of two position four-way valves by shaft coupling；The control line of steering engine is connected to the output terminal of measure-controlling unit, outputs signal to steering engine, and steering engine drives the switching of two position four-way valve valve shafts rotation progress gas circuit.The A interfaces access samples hydrogen of two position four-way valves, B interface is connected to the air inlet of device for deoxidizing, the gas outlet of device for deoxidizing is connected to the C interface of two position four-way valves, the air inlet of the D interface connection oxygen measurement unit gas chamber of two position four-way valves, the gas outlet connecting line of oxygen measurement unit gas chamber.The utility model can realize the timing alignment of oxygen sensor zero, improve the accuracy of oxygen content measurement and the stability of instrument, highly practical, and application easy to spread simple in structure.
Description
Technical field
The utility model belongs to gas line Measurement Technique field, more particularly to a kind of zero point auto-calibration of oxygen sensor
Device.
Background technology
At present, in the generator system of hydrogen_cooling in hydrogen oxygen content detection much using electrochemical sensor into
Row measures, and there are Zero drift in main amplifier in the long-term use for such sensor, cause measurement result inaccurate or even report by mistake
Alert situation.Therefore periodic calibration is needed using the detection instrument of such sensor, to ensure the correctness of testing result.But
In calibration process, need to consume a large amount of calibrating gas and artificial.
Utility model content
Part to solve the deficiencies in the prior art, the oxygen that the utility model offer a kind of can set calibration cycle pass
Sensor zero self-checking device.
In order to solve the above technical problems, the utility model adopts the following technical solution：Zero point auto-calibration of oxygen sensor
Device, including gas circuit electric switch-over mechanism, device for deoxidizing, oxygen measurement unit and measure-controlling unit.
Gas circuit electric switch-over mechanism includes a steering engine and two position four-way valves, and steering engine connects two four by shaft coupling
The valve shaft of port valve；Two position four-way valves have 4 interfaces, and air inlet is A mouthfuls, others respectively B, C and D interface, internal A-D,
B-C channels can switch to A-B, C-D channel by rotating valve shaft；The control signal wire of steering engine is connected to the defeated of measure-controlling unit
Outlet, measure-controlling unit output signal to steering engine, and steering engine drives the switching of two position four-way valve valve shafts rotation progress gas circuit, by A-
D, B-C channels switch to A-B, C-D channel or reversely switch back.
The A interfaces of two position four-way valves access samples hydrogen, the B interface gas piping of two position four-way valves by gas piping
It is connected to the air inlet of device for deoxidizing, the gas outlet of device for deoxidizing connects the C interface of two position four-way valves with gas piping, two four
The D interface of port valve connects the air inlet of oxygen measurement unit gas chamber with gas piping, and the gas outlet of oxygen measurement unit gas chamber connects
Gas piping is connect as exhaust outlet.The detection signal of oxygen measurement unit connects the input of measure-controlling unit by signal wire
End.
Device for deoxidizing is a container containing air inlet and gas outlet, catalyst is loaded inside container, in device for deoxidizing
On be additionally provided with temperature sensor, the signal wire of temperature sensor is connected to the input terminal of measure-controlling unit.
Oxygen measurement unit is made of gas chamber and oxygen sensor, and oxygen sensor is embedded in the inside of gas chamber, oxygen sensor
It is connected through a screw thread between device and gas chamber, the sensitive area of oxygen sensor is closed in plenum interior, is provided on gas chamber into gas
Mouth and gas outlet, the gas outlet connection gas piping of gas chamber are used as gas exhaust piping.The signal of sensor detection is connected by signal wire
Connect the input terminal of measure-controlling unit.
When the utility model is in measuring state, A mouth of the samples hydrogen through two position four-way valves enters two position four-way valves, passes through
Two position four-way valve of servos control makes samples hydrogen carry out oxygen content subsequently into oxygen measurement unit gas chamber from D mouthfuls of outflows
It measures, the detection signal input measurement control unit of oxygen sensor is collected, handles, stores, shows, uploads.
When the utility model needs to carry out zero point correction, the control signal control steering engine of measure-controlling unit output makes two
A-B the and C-D inner passages of four-way valve are opened, and A mouth of the samples hydrogen through two position four-way valves enters, from B mouthfuls of outflows, into deoxidation
Device, then the mouths of the C through two position four-way valves enter, then go out from D mouthfuls, subsequently into oxygen measurement unit gas chamber to oxygen sensor into
The purging and zero point correction of row zero.During this, hydrogen and oxygen generationization under the action of device for deoxidizing internal accelerator
It learns reaction production water and removes the oxygen contained in hydrogen, not oxygenous standard air source blowing for oxygen sensor zero is provided
It sweeps and the calibration of zero.Heat can be released when being chemically reacted due to hydrogen and oxygen, temperature in it is detected by temperature sensor
Degree when the heat released relatively of the oxygen content in hydrogen make that temperature increases to over setting value in device for deoxidizing more, measures control
The motor-driven work of unit control flaps, steering engine drive two position four-way valves to act, make the A-D and B-C of two position four-way valves further through shaft coupling
Inner passage is opened, and changes air flow direction, and gas circuit is made to be restored to measuring state, and pause carries out zero point correction.
The utility model is simple in structure, easily operated, it is most important that the zero timing alignment of oxygen sensor can be achieved,
Improve the accuracy of oxygen content measurement and the stability of instrument, highly practical, application easy to spread.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
Specific embodiment
As shown in Figure 1, the oxygen sensor zero self-checking device of the utility model, including device for deoxidizing 3, gas circuit electricity
Dynamic switching mechanism, oxygen measurement unit and measure-controlling unit 7；
Gas circuit electric switch-over mechanism includes two position four-way valves 1 and a steering engine 2, and steering engine 2 connects two by shaft coupling
The valve shaft of position four-way valve 1；Two position four-way valves 1 have 4 interfaces, and air inlet is A mouthfuls, others respectively B, C and D interface, in
Portion's A-D, B-C channel can switch to A-B, C-D channel by rotating valve shaft；The control signal wire of steering engine 2 is connected to measurement control
The output terminal of unit 7, measure-controlling unit 7 output signal to steering engine 2, and steering engine 2 drives two position four-way valves, 1 valve shaft to rotate into promoting the circulation of qi
The switching on road is switched to A-B, C-D channel by A-D, B-C channel or is reversely switched back.
The A interfaces of two position four-way valves 1 access samples hydrogen, the B interface flue of two position four-way valves 1 by gas piping
Road is connected to the air inlet of device for deoxidizing 3, and the gas outlet of device for deoxidizing 3 connects the C interface of two position four-way valves 1 with gas piping,
The D interface of two position four-way valves 1 connects the air inlet of oxygen measurement unit gas chamber 4 with gas piping, oxygen measurement unit gas chamber 4
Gas outlet connection gas piping is used as exhaust outlet.
Device for deoxidizing 3 is a container containing air inlet and gas outlet, catalyst is loaded inside container, in device for deoxidizing
On be additionally provided with temperature sensor 6, the signal wire of temperature sensor 6 is connected to the input terminal of measure-controlling unit 7.
Oxygen measurement unit is made of gas chamber 4 and oxygen sensor 5, and oxygen sensor is embedded in the inside of gas chamber 5, and oxygen passes
It is connected through a screw thread between sensor 5 and gas chamber 4, the sensitive area of oxygen sensor 5 is closed in inside gas chamber 4, is set on gas chamber 4
There are air intake and gas outlet, the gas outlet connection gas piping of gas chamber 4 is used as gas exhaust piping.The signal of sensor detection passes through letter
The input terminal of number line connection measure-controlling unit.
When the utility model is in measuring state, A mouth of the samples hydrogen through two position four-way valves 1 enters two position four-way valves 1, leads to
Crossing steering engine 2 controls two position four-way valves 1 that samples hydrogen is made to carry out oxygen content into oxygen measurement unit gas chamber 4 from D mouthfuls of outflows
It measures, the detection signal input measurement control unit 7 of oxygen sensor 5 is collected, processing, storage, display, the operations such as uploads.
When the utility model needs to carry out zero point correction, the control signal control steering engine 2 that measure-controlling unit 7 exports makes two
The inner passage of the A-B and C-D of position four-way valve 1 are opened, and A mouth of the samples hydrogen through two position four-way valves 1 enters, and is flowed out from B mouthfuls, into
Enter device for deoxidizing 3, then the C mouths through two position four-way valves 1 enter, then go out from D mouthfuls, subsequently into oxygen measurement unit gas chamber to oxygen
Gas sensor carries out the purging and zero point correction of zero.During this, under the action of 3 internal accelerator of device for deoxidizing hydrogen and
Oxygen generates chemical reaction generation water and removes the oxygen contained in hydrogen, provides not oxygenous standard air source for oxygen sensor
The purging of device zero and the calibration of zero.Heat can be released when being chemically reacted due to hydrogen and oxygen, by temperature sensor 6
Its interior temperature is detected, when the heat released relatively of the oxygen content in hydrogen make temperature in device for deoxidizing 3 increase to over setting value more
When, measure-controlling unit 7 controls steering engine 2 to act, and steering engine 2 drives two position four-way valves 1 to act further through shaft coupling, makes two four-ways
The inner passage of the A-D and B-C of valve 1 are opened, and gas circuit is made to be restored to measuring state, and pause carries out zero point correction.
The present embodiment is every according to this hair not to the limitation of works in any form such as shape, material, the structures of the present invention
Any simple modification, equivalent change and modification that bright technical spirit makees above example, belongs to the technology of the present invention side
The protection domain of case.
Claims (3)
1. oxygen sensor zero self-checking device, it is characterised in that：Including gas circuit electric switch-over mechanism, device for deoxidizing, oxygen
Gas measuring unit and measure-controlling unit；
Gas circuit electric switch-over mechanism includes a steering engine and two position four-way valves, and steering engine connects two position four-way valves by shaft coupling
Valve shaft；Two position four-way valves have 4 interfaces, and air inlet is A mouthfuls, and others are respectively B, C and D interface, and internal A-D, B-C lead to
Road can switch to A-B, C-D channel by rotating valve shaft；The control signal wire of steering engine is connected to the output terminal of measure-controlling unit,
Measure-controlling unit outputs signal to steering engine, and steering engine drives the switching of two position four-way valve valve shafts rotation progress gas circuit, by A-D, B-C
Channel switches to A-B, C-D channel or reversely switches back；
The A interfaces of two position four-way valves access samples hydrogen by gas piping, and the B interface of two position four-way valves is connected with gas piping
To the air inlet of device for deoxidizing, the gas outlet of device for deoxidizing connects the C interface of two position four-way valves, two position four-way valves with gas piping
D interface with gas piping connect oxygen measurement unit gas chamber air inlet, oxygen measurement unit gas chamber gas outlet connection gas
Body pipeline is used as exhaust outlet；
Temperature sensor is provided on device for deoxidizing, the signal wire of temperature sensor is connected to the input terminal of measure-controlling unit；
The detection signal of the lambda sensor set in the gas chamber of oxygen measurement unit connects measure-controlling unit by signal wire
Input terminal.
2. oxygen sensor zero self-checking device according to claim 1, it is characterised in that：Device for deoxidizing is one
Container containing air inlet and gas outlet, container inside load catalyst, temperature sensor are provided on device for deoxidizing.
3. oxygen sensor zero self-checking device according to claim 1, it is characterised in that：Oxygen measurement unit by
Gas chamber and oxygen sensor are formed, and oxygen sensor is embedded in the inside of gas chamber, is connected between oxygen sensor and gas chamber by screw thread
It connects, the sensitive area of oxygen sensor is closed in plenum interior, and air intake and gas outlet, the gas outlet of gas chamber are provided on gas chamber
It connects gas piping and is used as gas exhaust piping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721817870.3U CN207601002U (en) | 2017-12-22 | 2017-12-22 | Oxygen sensor zero self-checking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721817870.3U CN207601002U (en) | 2017-12-22 | 2017-12-22 | Oxygen sensor zero self-checking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207601002U true CN207601002U (en) | 2018-07-10 |
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ID=62766518
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721817870.3U Active CN207601002U (en) | 2017-12-22 | 2017-12-22 | Oxygen sensor zero self-checking device |
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| CN (1) | CN207601002U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109669015A (en) * | 2019-02-28 | 2019-04-23 | 重庆大学 | A kind of air quality detection system and its detection bearing calibration |
| CN110208359A (en) * | 2019-07-04 | 2019-09-06 | 希尔思仪表（深圳）有限公司 | For measuring the measuring device and measuring method of Oil in circulating gas steam or other hydrocarbon contents |
| CN110455984A (en) * | 2018-05-07 | 2019-11-15 | 中国石油化工股份有限公司 | Gas concentration sensor caliberating device and method |
-
2017
- 2017-12-22 CN CN201721817870.3U patent/CN207601002U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455984A (en) * | 2018-05-07 | 2019-11-15 | 中国石油化工股份有限公司 | Gas concentration sensor caliberating device and method |
| CN109669015A (en) * | 2019-02-28 | 2019-04-23 | 重庆大学 | A kind of air quality detection system and its detection bearing calibration |
| CN110208359A (en) * | 2019-07-04 | 2019-09-06 | 希尔思仪表（深圳）有限公司 | For measuring the measuring device and measuring method of Oil in circulating gas steam or other hydrocarbon contents |
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