CN110455991A - A kind of measurement of oxygen sensor and calibration equipment - Google Patents
A kind of measurement of oxygen sensor and calibration equipment Download PDFInfo
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- CN110455991A CN110455991A CN201910697965.3A CN201910697965A CN110455991A CN 110455991 A CN110455991 A CN 110455991A CN 201910697965 A CN201910697965 A CN 201910697965A CN 110455991 A CN110455991 A CN 110455991A
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 150
- 239000001301 oxygen Substances 0.000 title claims abstract description 150
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 150
- 238000005259 measurement Methods 0.000 title claims abstract description 62
- 238000012795 verification Methods 0.000 claims abstract description 85
- 239000007789 gas Substances 0.000 claims abstract description 76
- 230000002000 scavenging effect Effects 0.000 claims abstract description 24
- 230000006837 decompression Effects 0.000 claims abstract description 19
- 238000004064 recycling Methods 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000012797 qualification Methods 0.000 claims description 7
- 239000002912 waste gas Substances 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 12
- 238000012360 testing method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0006—Calibrating gas analysers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Measuring Oxygen Concentration In Cells (AREA)
Abstract
A kind of measurement of oxygen sensor and calibration equipment, are mounted on EGR diesel engine peculiar to vessel, including oxygen sensor, daily measurement working line, verify pipeline, accurate verification pipeline and the general pipeline that releases roughly；Wherein, the oxygen concentration of daily measurement working line measurement scavenging air, after scavenging air is released by decompression with moisture, by solenoid valve control and be again depressured, into oxygen sensor while measuring oxygen concentration；Rough verification pipeline is used for the daily verification of oxygen sensor, and compressed air is released by decompression with moisture, by solenoid valve control and again after decompression, verifies one by one to oxygen sensor；Accurate verification pipeline for oxygen sensor period verify, criteria check gas pass through solenoid valve control, then by decompression after, oxygen sensor is verified one by one.Measuring device and calibration equipment are fitted together by the present invention, and the verification that oxygen sensor can be carried out directly on host effectively controls the discharge of diesel engine nitrogen oxides to ensure that the normal operation of egr system.
Description
Technical field
The present invention relates to the measurements and verification of a kind of exhaust gas recycling use for diesel engine oxygen sensor peculiar to vessel, and in particular to one
The measurement of kind oxygen sensor and calibration equipment, belong to Diesel Engine Technique Field.
Background technique
In order to cope with the discharged nitrous oxides Tier III regulation being increasingly stringenter, shipping industry has been proposed at present
A series of diesel engine new technologies and adjustable strategies, wherein exhaust gas recycling (EGR) technology is meet Tier III regulation effective
One of technical cue.The principle of EGR Technology are as follows: introduce a part by purified exhaust gas to diesel engine scavenging collection
It manages, the CO that the partial oxidation in diesel engine scavenging air generates during will being burned2It is substituted, thus diesel engine thermal response
When burn rate by relative drop, simultaneously because CO2With biggish specific heat capacity, thus the peak temperature of diesel combustion
The generation of nitrogen oxides when will substantially reduce, while greatly reduce diesel engine thermal response meets Tier III row to reach
Put regulation purpose.
It can be seen that suitable diesel exhaust recirculation rate from the principle of above-mentioned EGR Technology and be to ensure that exhaust gas
Recycling (EGR) operates normally and can satisfy the basis of Tier III effluent specification.And the ER EGR Rate of diesel engine
It is to be controlled according to the oxygen concentration in diesel engine scavenging collector, therefore the standard of the oxygen sensor to measure oxygen concentration
True property is most important for the control of exhaust gas recycling (EGR) system.
The conventional practice of marine diesel oxygen sensor verification at present is to send sensor to relevant speciality mechanism to carry out
Verification.It is advised according to current international law, when diesel engine bench tests period, sensor calibration is valid for three months；When ship navigates
Row service period, the validity period of sensor calibration are 1 year.However this practice is for recycling (EGR) diesel engine for exhaust gas
Oxygen sensor for, there is certain deficiencies: 1) in view of oxygen sensor exhaust gas recycling (EGR) system control
Play the role of vital in system, if verified according to existing related international regulations, the validity period verified is obvious
It is partially long, to will affect the accuracy of diesel engine oxygen concentration testing, and then cause exhaust gas recycling (EGR) system can not be accurate
Operation, this will directly affect the control of the performance condition and diesel engine discharged nitrous oxides of diesel engine；2) oxygen sensor send to
Professional institution carries out verification and needs period regular hour, this will affect the normal operation of ship.
Therefore certain in addition to being equipped at runtime for the marine diesel with exhaust gas recycling (EGR) device
Except redundancy device, oxygen sensor there is a need for being able to be verified in day-to-day operation, and verifying work needs quickly, just
It is prompt and accurate, the normal operation of marine diesel cannot be influenced.Therefore, how exhaust gas recycling (EGR) diesel engine oxygen is being ensured
While gas sensor measurement accuracy, efficiently and easily oxygen sensor can be verified, this is one, and there is an urgent need to solve
Certainly the problem of.
Summary of the invention
It is an object of the present invention to overcome the limitation of existing oxygen sensor device verification mode, a kind of oxygen is provided
The measurement of sensor and calibration equipment can quickly and easily carry out the school of oxygen sensor in diesel engine normal course of operation
It tests, it is ensured that the checking precision of oxygen sensor meets design requirement, ensures the normal fortune of diesel engine waste gas recycling system control
Row, the discharge of the performance and nitrogen oxides that make diesel engine meets the requirements, avoid the check problem of oxygen sensor to ship just
Often operation adversely affects.
Based on above-mentioned purpose, the technical solution used in the present invention is as follows:
A kind of measurement of oxygen sensor and calibration equipment, are mounted on EGR diesel engine peculiar to vessel, it is characterised in that: described
Measurement and calibration equipment include oxygen sensor, daily measurement working line, verify pipeline, accurate verification pipeline and let out roughly
General pipeline is put, release general pipeline described in oxygen sensor connection；
The oxygen of the scavenging air of the daily scavenging collector of the measurement working line measurement from the EGR diesel engine peculiar to vessel
Gas concentration, for controlling the operation of diesel engine waste gas recycling system, which includes sequentially connected sweep
Gas air intlet pipeline, throttle valve, condensed water bleeder valve, solenoid valve and throttle valve, the latter throttle valve and the oxygen pass
Sensor connection；After the scavenging air is released by the decompression of the throttle valve and the moisture of the condensed water bleeder valve, pass through
The control of the solenoid valve, later by the decompression again of the latter throttle valve, into the oxygen sensor, which is passed
Sensor measures the oxygen concentration in the scavenging air, and then the scavenging air is discharged into the general pipeline that releases；
The rough verification pipeline is used for the daily verification of the oxygen sensor, including compressed air inlet pipeline, cold
Condensed water discharging valve, pressure-regulating valve, solenoid valve and throttle valve, the throttle valve are connect with the oxygen sensor；The compression is empty
Gas inlet pipe road is passed through daily verification gas, the daily verification gas by the moisture of the condensed water bleeder valve release with it is described
After the decompression of pressure-regulating valve, by the control of the solenoid valve, later by the decompression again of the throttle valve, into described
Oxygen sensor is verified, and the oxygen concentration of the daily verification gas of the measurement result and input of the oxygen sensor is consistent i.e.
For qualification, then the daily verification gas is discharged into the general pipeline that releases；
Period of the accurate verification pipeline for the oxygen sensor verifies, including calibrating gas inlet ductwork, electricity
Magnet valve and throttle valve, the throttle valve are connect with the oxygen sensor；The calibrating gas inlet ductwork is passed through criteria check gas
Body, the criteria check gas pass through the control of the solenoid valve, later by the decompression of the throttle valve, pass into the oxygen
Sensor is verified, and the oxygen concentration of the criteria check gas of the measurement result and input of the oxygen sensor is consistent as closing
Lattice, then the criteria check gas is discharged into the general pipeline that releases.
Further, when the daily measurement working line work, the rough verification pipeline and accurate verification pipe
Road is in close state；When the rough verification pipeline work, the daily measurement working line and accurate verification pipeline
It is in close state；When the accurate verification pipeline work, at the daily measurement working line and rough verification pipeline
In closed state.
Further, the oxygen sensor, daily measurement working line, rough verification pipeline and accurate verification pipeline
Quantity more than one, each oxygen sensor, daily measurement working line, rough verification pipeline and accurate verification pipeline are in parallel connection
State.
Further, when the daily measurement working line work, all oxygen sensors are simultaneously to the scavenging
Air measures；When verification pipeline or accurate verification pipeline work roughly, each oxygen sensor is verified respectively.
Further, the daily verification gas is the compressed air from surrounding air, and oxygen concentration is
21%.
Further, the criteria check gas be by certification calibrating gas, oxygen concentration be 14%~
16%.
Compared with traditional oxygen sensor measuring device, main feature of the invention is with advantage:
1. oxygen sensor measuring device and oxygen sensor calibration equipment are fitted together by the present invention, simplification is reached
The effect of structure, this has apparent difference with previous oxygen sensor measuring device.
2. oxygen sensor measurement of the present invention being capable of the convenience progress directly on host on the spot with calibration equipment
The verification of oxygen sensor is verified without sending oxygen sensor to relevant speciality mechanism；As long as in this way on ship
It is configured with satisfactory criteria check gas and compressed air, so that it may carry out oxygen directly on ship during navigation
The rough verification of sensor and accurate verification, so as to shorten the period of verification, it is ensured that the accuracy of oxygen sensor guarantees
The measurement accuracy of diesel engine oxygen concentration, and then ensured the normal operation of exhaust gas recycling (EGR) system, it efficiently controls
The discharge of diesel engine nitrogen oxides.
3. the present invention verifies the daily verification gas used roughly as the compressed air of diesel engine itself, and diesel engine compresses
Air is derived from atmosphere, and there is no need to additional verification reference gas and its input equipments, this greatly facilitates the day of oxygen sensor
Often verification.
Detailed description of the invention
Fig. 1 is principle schematic diagram of the invention.
In figure,
X1, X2 are condensed water bleeder valve, and C1, C2 are pressure-regulating valve, J1, J2, J3, J4, J5, J6, J7, J8, J9, J10
For throttle valve, O1, O2, O3 are oxygen sensor, and P1, P2, P3, P4 are pressure gauge, and V1 is three-way cut-off valve, V2, V3, V4, V5,
V6, V7, V8, V9 are solenoid valve, and V10, V12, V13, V14 are two logical shut-off valves, and S1 is that pressure adjusts gas bleeder valve, and G is total to release
Pipe.
Specific embodiment
The present invention is described in detail in the following with reference to the drawings and specific embodiments, but protection scope of the present invention is not limited to
Following embodiments.The equivalence changes and modification that all contents according to this specification are made all should belong to the present patent application requirement
The technical scope of protection.
Below using the measurement containing 3 oxygen sensors and calibration equipment as embodiment.
Referring to Fig. 1, the measurement of the oxygen sensor and calibration equipment are mounted on exhaust gas recycling (EGR) device
On marine diesel comprising three oxygen sensors O1, O2 and O3, daily measurement working line, verify pipeline roughly, is accurate
Verification pipeline and its related auxiliary piping and the general pipeline G that releases；The oxygen sensor O1, O2 and O3 are separately connected the general pipeline that releases
G, each oxygen sensor connects daily measurement working line, rough verification pipeline and accurate verification pipeline, and they are in simultaneously
Connection state；Pressure gauge P4 is also connected on the general pipeline G that releases, pressure adjusts the logical shut-off valve V12 of gas bleeder valve S1 and two, the pressure
Adjust gas bleeder valve S1 be mainly used to adjust described in the release gas of general pipeline G release pressure, the two logical shut-off valve V12 is then used to let out
Put the condensed water and residual gas released in general pipeline G.
The oxygen concentration of scavenging air of the daily measurement working line measurement in diesel engine scavenging collector, institute
The oxygen concentration of measurement will be used to control the operation of diesel engine waste gas recycling system.The daily measurement working line includes successively
The scavenging air inlet ductwork of connection, two logical shut-off valve V13 and V14, throttle valve J9 and J10, three-way cut-off valve V1, condensed water are let out
Put valve X2, solenoid valve V4, V5 and V6 and throttle valve J3, J5 and J7, the throttle valve J3, J5 and J7 respectively with the oxygen sensor
Device O1, O2 are connected with O3；Condensed water bleeder valve X2 also passes through pressure-regulating valve C2 connection and releases general pipeline G, and is connected to pressure
Table P3.
The rough verification pipeline is used for the daily verification of the oxygen sensor, mainly empty comprising sequentially connected compression
Gas inlet pipe road (i.e. daily verification gas inlet manifold), condensed water bleeder valve X1, pressure-regulating valve C1, solenoid valve V2, V3, V7
With V8 and throttle valve J2, J4 and J6, the throttle valve J2, J4 and J6 are connect with described oxygen sensor O1, O2 and O3 respectively；Institute
It states solenoid valve V2 and also passes through two logical shut-off valve V10 connections and release general pipeline G, the pressure-regulating valve C1 also passes sequentially through throttle valve J1
Release general pipeline G described in connecting with J8, and pressure gauge P1 and P2 are connected with before and after throttle valve J1.The compressed air inlet pipeline
It is passed through daily verification gas, which uses the compressed air of diesel engine itself, since diesel engine compressed air is come
Derived from surrounding air, so its oxygen concentration is 21% or so.
Period of the accurate verification pipeline for the oxygen sensor verifies, including calibrating gas inlet ductwork, electricity
Magnet valve V9, V3, V7 and V8 and throttle valve J2, J4 and J6, the throttle valve J2, J4 and J6 respectively with the oxygen sensor O1,
O2 is connected with O3；The solenoid valve V9 also passes through two logical shut-off valve V10 connections and releases general pipeline G.The calibrating gas inlet ductwork
It is passed through criteria check gas, which uses the calibrating gas of 14%~16% oxygen concentration by certification.
When the described daily measurement working line work, the scavenging air of diesel engine pass through respectively two logical shut-off valve V13 and
14, using three-way cut-off valve V1 is reached after throttle valve J9 and J10 decompression, after being released by condensed water bleeder valve X2 moisture, divide
Not Tong Guo solenoid valve V4, V5 and V6 control, depressurized again using throttle valve J3, J5 and J7 arrive separately at oxygen sensor O1,
At O2 and O3, scavenging air flows into the general pipeline G that releases after oxygen sensor O1, O2 and O3 measure oxygen concentration simultaneously.In day
Often when the work of measurement working line, the related valve member of rough verification pipeline and accurate verification pipeline is in close state.
When verification pipeline work roughly, after compressed air is released by condensed water bleeder valve X1 moisture, using pressure
Regulating valve C1 decompression starts respectively to verify oxygen sensor O1, O2 and O3 after reaching at solenoid valve V2.When progress oxygen
When gas sensor O1 is verified, solenoid valve V3 is opened, and the logical shut-off valve V10 of solenoid valve V7 and V8 and two is closed, and compressed air passes through
Solenoid valve V3 control, throttle valve J2 are reached at oxygen sensor O1 after depressurizing again, and oxygen sensor O1 is measured in compressed air
Oxygen concentration, the oxygen concentration of the daily verification gas of the measurement result and input of oxygen sensor O1 is consistent as closing
Lattice, gas finally flow into the gathering tube G that releases；It is verified after oxygen sensor O1 has been verified, then to oxygen sensor O2, this
When solenoid valve V7 open, the logical shut-off valve V10 of solenoid valve V3 and V8 and two is closed, and compressed air passes through solenoid valve V7 control, section
Stream valve J4 is reached after depressurizing again and is verified at oxygen sensor O2, the measurement result of oxygen sensor O2 and the day of input
Often the oxygen concentration of verification gas is consistent as qualification, verifies gas later and flows into the general pipeline G that releases；When oxygen sensor O2 is completed
After verification, then oxygen sensor O3 is verified, solenoid valve V8 is opened at this time, the logical shut-off valve of solenoid valve V3 and V7 and two
V10 is closed, and is reached at oxygen sensor O3 after compressed air is controlled by solenoid valve V8, throttle valve J6 is depressurized again and is carried out school
It tests, the oxygen concentration of the daily verification gas of the measurement result and input of oxygen sensor O3 is consistent as qualification, later school
It tests gas and flows into the general pipeline G that releases.In verification pipeline work roughly, the phase of daily measurement working line and accurate verification pipeline
Valve member is closed to be in close state.
When the work of accurate verification pipeline, criteria check gas starts respectively to pass oxygen after solenoid valve V9 control
Sensor O1, O2 and O3 are verified.When oxygen sensor O1 is verified, solenoid valve V3 open, solenoid valve V7 and V8 with
And two logical shut-off valve V10 close, criteria check gas is by reaching oxygen sensor after solenoid valve V3 control, throttle valve J2 decompression
The oxygen concentration of the criteria check gas of the measurement result and input of O1, oxygen sensor O1 is consistent as qualification, through peroxide
Gas after gas sensor O1 measurement finally flows into the general pipeline G that releases；After oxygen sensor O1 has been verified, then to oxygen sensor
O2 is verified, and solenoid valve V7 is opened at this time, and the logical shut-off valve V10 of solenoid valve V3 and V8 and two is closed, and criteria check gas is logical
Solenoid valve V7 is crossed to control, verified at arrival oxygen sensor O2 after throttle valve J4 decompression, the measurement of oxygen sensor O2
As a result it is consistent with the oxygen concentration of the criteria check gas of input as qualification, gas flows into the general pipeline G that releases later；When oxygen passes
After sensor O2 completes verification, then oxygen sensor O3 is verified, solenoid valve V8 is opened at this time, solenoid valve V3 and V7 and two
Logical shut-off valve V10 is closed, and criteria check gas after solenoid valve V8 control, throttle valve J6 decompression by reaching at oxygen sensor O3
It being verified, the oxygen concentration of the criteria check gas of the measurement result and input of oxygen sensor O3 is consistent as qualification,
Criteria check gas flows into the general pipeline G that releases later.In the work of accurate verification pipeline, daily measurement working line and rough school
The related valve member for testing pipeline is in close state.
Related auxiliary piping of the invention is mainly used to ensure daily measurement work and the verifying work of oxygen sensor
Go on smoothly.Wherein, generally adjusted by the compressed air pressure after pressure-regulating valve C1 to 120mbar or so, by pressure
It is shown on table P1；Throttle valve J1 and J8 is used to adjust the pressure of compressed air, 5-10mbar or so is generally adjusted to, in pressure gauge P2
Upper display；Throttle valve J9, J10 and pressure-regulating valve C2 are used to adjust the diesel engine scavenging air of the daily measurement of oxygen sensor
Pressure, generally adjust to 30mbar or so, it is shown on pressure gauge P3.
The convenience and accuracy of oxygen sensor verification in order to balance, further provides for oxygen sensor method of calibration
Are as follows: when initial correlation, rough verification step is first carried out, then carry out accurate verification step；When daily verification, it is only necessary to carry out oxygen
The rough verification step of sensor, general gap periods are 1 day；When period verifies, the rough verification step of oxygen sensor is first carried out,
Oxygen sensor accurate verification step is carried out again, and general gap periods are 1 month.
The scope of protection of present invention is not limited only to above-described embodiment, also should be without creative work including other
Obtainable obvious equivalent transformation and alternative solution.
Claims (6)
1. measurement and the calibration equipment of a kind of oxygen sensor are mounted on EGR diesel engine peculiar to vessel, it is characterised in that: described
Measurement and calibration equipment include oxygen sensor, daily measurement working line, verify pipeline, accurate verification pipeline roughly and release
General pipeline releases general pipeline described in oxygen sensor connection；
The oxygen of the scavenging air of the daily scavenging collector of the measurement working line measurement from the EGR diesel engine peculiar to vessel is dense
Degree, for controlling the operation of diesel engine waste gas recycling system, which includes that sequentially connected scavenging is empty
Gas inlet pipe road, throttle valve, condensed water bleeder valve, solenoid valve and throttle valve, the latter throttle valve and the oxygen sensor
Connection；After the scavenging air is released by the decompression of the throttle valve and the moisture of the condensed water bleeder valve, by described
The control of solenoid valve, later by the decompression again of the latter throttle valve, into the oxygen sensor, the oxygen sensor
The oxygen concentration in the scavenging air is measured, then the scavenging air is discharged into the general pipeline that releases；
The rough verification pipeline is used for the daily verification of the oxygen sensor, including compressed air inlet pipeline, condensed water
Bleeder valve, pressure-regulating valve, solenoid valve and throttle valve, the throttle valve are connect with the oxygen sensor；The compressed air into
Mouth pipeline is passed through daily verification gas, which is released and the pressure by the moisture of the condensed water bleeder valve
After the decompression of regulating valve, by the control of the solenoid valve, later by the decompression again of the throttle valve, into the oxygen
Sensor is verified, and the oxygen concentration of the daily verification gas of the measurement result and input of the oxygen sensor is consistent as closing
Lattice, then the daily verification gas is discharged into the general pipeline that releases；
Period of the accurate verification pipeline for the oxygen sensor verifies, including calibrating gas inlet ductwork, solenoid valve
And throttle valve, the throttle valve are connect with the oxygen sensor；The calibrating gas inlet ductwork is passed through criteria check gas, should
Criteria check gas passes through the control of the solenoid valve, later by the decompression of the throttle valve, into the oxygen sensor
It is verified, the oxygen concentration of the criteria check gas of the measurement result and input of the oxygen sensor is consistent as qualification, so
The criteria check gas is discharged into the general pipeline that releases afterwards.
2. measurement and the calibration equipment of oxygen sensor according to claim 1, it is characterised in that: when the daily survey
When measuring working line work, the rough verification pipeline and accurate verification pipeline are in close state；When the rough verification
When pipeline works, the daily measurement working line and accurate verification pipeline are in close state；When the accurate verification pipe
When road works, the daily measurement working line and rough verification pipeline are in close state.
3. measurement and the calibration equipment of oxygen sensor according to claim 1, it is characterised in that: the oxygen sensor
The quantity more than one of device, daily measurement working line, rough verification pipeline and accurate verification pipeline, each oxygen sensor, day
Often measurement working line, rough verification pipeline and accurate verification pipeline are in parallel connection.
4. measurement and the calibration equipment of oxygen sensor according to claim 3, it is characterised in that: when the daily survey
When measuring working line work, all oxygen sensors simultaneously measure the scavenging air；When rough verification pipeline or essence
Really when the work of verification pipeline, each oxygen sensor is verified respectively.
5. measurement and the calibration equipment of oxygen sensor according to claim 1, it is characterised in that: the daily verification
Gas is the compressed air from surrounding air, oxygen concentration 21%.
6. measurement and the calibration equipment of oxygen sensor according to claim 1, it is characterised in that: the criteria check
Gas is by the calibrating gas of certification, and oxygen concentration is 14%~16%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910697965.3A CN110455991A (en) | 2019-07-31 | 2019-07-31 | A kind of measurement of oxygen sensor and calibration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910697965.3A CN110455991A (en) | 2019-07-31 | 2019-07-31 | A kind of measurement of oxygen sensor and calibration equipment |
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| Publication Number | Publication Date |
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| CN110455991A true CN110455991A (en) | 2019-11-15 |
Family
ID=68484170
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910697965.3A Withdrawn CN110455991A (en) | 2019-07-31 | 2019-07-31 | A kind of measurement of oxygen sensor and calibration equipment |
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|---|---|---|---|---|
| CN201845003U (en) * | 2010-07-23 | 2011-05-25 | 夏学苏 | Self-correcting online analytical instrument for oxygen concentration of flue gas |
| CN102435440A (en) * | 2011-09-29 | 2012-05-02 | 天津大学 | Method for utilizing single oxygen concentration sensor to test exhaust gas recirculation rate of diesel engine |
| CN102866232A (en) * | 2012-10-08 | 2013-01-09 | 中国矿业大学 | Automatic calibration method and device for gas sensor |
| CN107656014A (en) * | 2017-08-14 | 2018-02-02 | 武汉船用机械有限责任公司 | A kind of monitoring system and method for crude oil carrier oxygen content |
-
2019
- 2019-07-31 CN CN201910697965.3A patent/CN110455991A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201845003U (en) * | 2010-07-23 | 2011-05-25 | 夏学苏 | Self-correcting online analytical instrument for oxygen concentration of flue gas |
| CN102435440A (en) * | 2011-09-29 | 2012-05-02 | 天津大学 | Method for utilizing single oxygen concentration sensor to test exhaust gas recirculation rate of diesel engine |
| CN102866232A (en) * | 2012-10-08 | 2013-01-09 | 中国矿业大学 | Automatic calibration method and device for gas sensor |
| CN107656014A (en) * | 2017-08-14 | 2018-02-02 | 武汉船用机械有限责任公司 | A kind of monitoring system and method for crude oil carrier oxygen content |
Non-Patent Citations (1)
| Title |
|---|
| 无: "氧气传感器的调校", 《HTTPS://WWW.DOCIN.COM/P-1360620019.HTML》 * |
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Application publication date: 20191115 |
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| WW01 | Invention patent application withdrawn after publication |