CN201852816U - Analyzer for measuring humidity and oxygen - Google Patents
Analyzer for measuring humidity and oxygen Download PDFInfo
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- CN201852816U CN201852816U CN2010205911639U CN201020591163U CN201852816U CN 201852816 U CN201852816 U CN 201852816U CN 2010205911639 U CN2010205911639 U CN 2010205911639U CN 201020591163 U CN201020591163 U CN 201020591163U CN 201852816 U CN201852816 U CN 201852816U
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- sampling probe
- wide area
- type sensor
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Abstract
The utility model discloses an analyzer for measuring humidity and oxygen. The analyzer comprises a first sampling probe, a second sampling probe, a first wide area specific current type sensor, a second wide area specific current type sensor and a calculation control module, wherein the first sampling probe is connected with the first wide area specific current type sensor, and the first wide area specific current type sensor is used for analyzing smoke gas collected by the first sampling probe, and a first current signal is obtained; the second sampling probe is connected with the second wide area specific current type sensor, and the second wide area specific current type sensor is used for analyzing the smoke gas collected by the second sampling probe, and a second current signal is obtained; and the calculation control module is respectively connected with the first wide area specific current type sensor and the second wide area specific current type sensor, and used for processing the first current signal and the second current signal for obtaining humidity and oxygen content in the smoke gas.
Description
Technical field
The utility model relates to the fume emission field, in particular to a kind of analyser of measuring humidity and oxygen.
Background technology
Along with increasing of CEMS (Continuous Emission Monitoring System, flue gas automatic monitored control system) project, the problem of moisture measurement also more and more (they mainly being that probe damage and apparatus measures are inaccurate).Because humidity and oxygen are the calculating factors of wet basis coefficient important among the CEMS, and existing hygronom can not have been met the need of market, and industries such as light textile, hospital, the drying of wood, food processing and burning are also urgent day by day to the demand of (more than 100 ℃) moisture measurement and control aspect under the high temperature in recent years.
Measurement to moisture in the exhaust in the prior art mainly contains condensation method, measurement with wet and gravimetric method.Contrast three kinds of methods, all show the structure more complicated, calculate more loaded down with trivial details, and simultaneously on-line measurement oxygen concentration and humidity.
The utility model content
The utility model provides a kind of analyser of measuring humidity and oxygen, in order to the problem of on-line measurement oxygen concentration and humidity simultaneously in the prior art.
For achieving the above object, the utility model provides a kind of analyser of measuring humidity and oxygen, and it comprises: first sampling probe, second sampling probe, first wide area than current type sensor, second wide area than current type sensor and calculation control module, wherein
First sampling probe is connected than current type sensor with first wide area, and first wide area is used for the flue gas of the first sampling probe collection is analyzed than current type sensor, obtains first current signal;
Second sampling probe is connected than current type sensor with second wide area, and second wide area is used for the flue gas of the second sampling probe collection is analyzed than current type sensor, obtains second current signal;
Calculation control module is connected than current type sensor with second wide area than current type sensor with first wide area respectively, is used for first current signal and second current signal are handled humidity and the oxygen content that obtains flue gas.
Preferable, the analyser of above-mentioned measurement humidity and oxygen also comprises: cabinet, calculation control module is arranged in the cabinet.
Preferable, in the analyser of above-mentioned measurement humidity and oxygen, cabinet is wall-hanging closed case.
Preferable, in the analyser of above-mentioned measurement humidity and oxygen, first wide area is respectively the Bosch lambda sensor than the current type sensor and second wide area than current type sensor.
Preferable, in the analyser of above-mentioned measurement humidity and oxygen, but first sampling probe and second sampling probe adopt the structure of direct insertion blowback respectively.
Preferable, in the analyser of above-mentioned measurement humidity and oxygen, the inside of first sampling probe and second sampling probe is respectively arranged with heating rod and thermal resistance.
Preferable, in the analyser of above-mentioned measurement humidity and oxygen, calculation control module comprises: current-voltage converting unit, signal processing unit, AD converting unit, CPU (central processing unit) and DA converting unit, wherein, the current-voltage converting unit is connected with second sampling probe with first sampling probe, is used for first current signal and second current signal are converted to first voltage signal and second voltage signal respectively; Signal processing unit is connected between current-voltage converting unit and the AD converting unit, is used for first voltage signal and second voltage signal are amplified and filtering, and is converted to digital signal through the AD converting unit; CPU (central processing unit) is connected with the AD converting unit, be used for calculating the oxygen concentration of flue gas according to the digital signal of the first voltage signal correspondence, and calculate humidity in the flue gas, and oxygen concentration and humidity are separately converted to current signal and output according to the difference of the digital signal of the first voltage signal correspondence digital signal corresponding with second voltage signal; The DA converting unit is connected between CPU (central processing unit) and first sampling probe and second sampling probe.
Preferable, in the analyser of above-mentioned measurement humidity and oxygen, calculation control module also comprises: LCD, be connected with CPU (central processing unit), and be used to show oxygen concentration and humidity; Bus interface is used for oxygen concentration and humidity are outputed to communication facilities.
Preferable, in the analyser of above-mentioned measurement humidity and oxygen, calculation control module also comprises: input block, be connected with CPU (central processing unit), and be used to receive user's input.
The foregoing description is gathered flue gas by two probes, and then utilize wide area than the current type sensor characteristic of oxygen determination concentration and humidity simultaneously, calculate oxygen concentration and humidity in the flue gas, overcome in the prior art problem of on-line measurement oxygen concentration and humidity simultaneously.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is according to the measurement humidity of an embodiment of the utility model and the analyser synoptic diagram of oxygen;
Fig. 2 is according to the measurement humidity of the employing cabinet of an embodiment of the utility model and the analyser synoptic diagram of oxygen;
Fig. 3 is the sonde configuration synoptic diagram according to an embodiment of the utility model;
Fig. 4 pops one's head among Fig. 3 along the right view of A-A;
Fig. 5 is the analyser workflow synoptic diagram according to the measurement humidity of an embodiment of the utility model and oxygen.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not paying the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Wide area has restriction than the formed minimum hole of current type sensor cathode one side to the gas that flows into, oxygen concentration one regularly in dry gas, the output current value of sensor does not increase with the increase of impressed voltage, and reaching a certain steady state value, this constant current value is called the first boundary current value under this oxygen concentration; If this sensor is placed the environment that contains water vapor and progressively improves working sensor voltage, arrive the significant second boundary current value with regard to energy measurement.The first boundary current value (I1) and the second boundary current value (I2) respectively with environment in partial pressure of oxygen and to contain the partial pressure of oxygen of water vapor proportional.
Can draw the humidity sensing characteristic of wide area than current sensor thus: when boundary current type humidity sensor was in the dry air, its boundary current value was a steady state value; When containing water vapor in the ambiance, two sections steps then can appear, at first section, because the existence of water vapor the partial pressure of oxygen in the ambiance is reduced, thereby descending appears in the first boundary current value (I1), at second section, because the water vapor in the atmosphere is adsorbed by sensor cathode and electrolytic reaction takes place, and has produced new oxonium ion, therefore the second boundary current value increases.Therefore, by detecting the ration the power supply difference DELTA I (Δ I=I2 one I1) of flow valuve of two segment limits, just can detect the steam partial pressure value in the ambiance easily.
Wide area is special oxygen determination than current type sensor, and it measures electric current has good linear relationship in low-voltage (under the 1V) and oxygen content, is feasible together so oxygen determination and hygrometric degree are incorporated into.
Fig. 1 is according to the measurement humidity of an embodiment of the utility model and the analyser synoptic diagram of oxygen, it comprises: first sampling probe 10, second sampling probe 20, first wide area than current type sensor 30, second wide area than current type sensor 40 and calculation control module 50, wherein
Present embodiment is gathered flue gas by two probes, and then utilize wide area than the current type sensor characteristic of oxygen determination concentration and humidity simultaneously, calculate oxygen concentration and humidity in the flue gas, overcome in the prior art problem of on-line measurement oxygen concentration and humidity simultaneously.
Preferable, the analyser of above-mentioned measurement humidity and oxygen also comprises: cabinet, calculation control module is arranged in the cabinet.
Fig. 2 is according to the measurement humidity of the employing cabinet of an embodiment of the utility model and the analyser synoptic diagram of oxygen.As shown in Figure 2, cabinet is wall-hanging closed case, to satisfy the outdoor application requirement.
Preferable, in the analyser of above-mentioned measurement humidity and oxygen, first wide area is respectively the Bosch lambda sensor than the current type sensor and second wide area than current type sensor.
Preferable, in the analyser of above-mentioned measurement humidity and oxygen, but first sampling probe and second sampling probe adopt the structure of direct insertion blowback respectively, can solve the easy blocking problem of probe in the prior art, probe is easy to change simultaneously, and is easy to use, and reduced maintenance cost.
Preferable, in the analyser of above-mentioned measurement humidity and oxygen, the inside of first sampling probe and second sampling probe is respectively arranged with heating rod and thermal resistance, in order to obtain the standard aqueous vapor of high temperature (more than 100 degrees centigrade).
Fig. 3 is the sonde configuration synoptic diagram according to an embodiment of the utility model.As shown in Figure 3, this probe comprises: flange assembly 1, sampling component 2, filter assemblies 3, plug 4, plug packing ring 5, hexagon socket cap head screw 6, aviation socket 7, cross recessed small pan head screw 8, heating rod, thermal resistance and probe.
Fig. 4 pops one's head in along the right view of A-A among Fig. 3.
Preferable, in the analyser of above-mentioned measurement humidity and oxygen, calculation control module comprises: current-voltage converting unit, signal processing unit, AD converting unit, CPU (central processing unit) and DA converting unit, wherein, the current-voltage converting unit is connected with second sampling probe with first sampling probe, is used for first current signal and second current signal are converted to first voltage signal and second voltage signal respectively; Signal processing unit is connected between current-voltage converting unit and the AD converting unit, is used for first voltage signal and second voltage signal are amplified and filtering, and is converted to digital signal through the AD converting unit; CPU (central processing unit) is connected with the AD converting unit, be used for calculating the oxygen concentration of flue gas according to the digital signal of the first voltage signal correspondence, and calculate humidity in the flue gas, and oxygen concentration and humidity are separately converted to current signal (as 4-20mA) and output according to the difference of the digital signal of the first voltage signal correspondence digital signal corresponding with second voltage signal; The DA converting unit is connected between CPU (central processing unit) and first sampling probe and second sampling probe.
Changing the humidity of popping one's head in arbitrarily will recalibrate, if change oxygen probe, oxygen determination also need be calibrated.Calibrate by calculation control unit, obtain moisture measurement value and oxygen concentration measurements consistent when dispatching from the factory.
Temporarily can't obtain under the high temperature standard aqueous vapor situation, can be earlier produce humidity by humidity cabinet, again by high Hygrothermograph TPI597 to its accurate measurement, obtain range gas (80 ℃, 85%) accurately, humidity dividing potential drop 40.3kPa, with high pure nitrogen as gas at zero point.But Using such method is verified linear point after carrying out zero point, range calibration.
Changing after the probe can be by airborne humidity as a certain linear point with carry out 2 calibrations zero point, obtains moisture measurement value consistent when dispatching from the factory.Its theoretical foundation is: since probe measurement from zero point (0kPa) to terminal point (40.3kPa) sampled signal and humidity be ideal linearity and concern, (0-40.3) 4-20mA of kPa correspondence is also linear with humidity, and probe with linea obliqe posterior skew only can take place and slope changes and change.If, promptly recover to dispatch from the factory measured value so the humidity partial pressure value of any point in the middle of accurately obtaining just can reach the coincidence of changing two oblique lines in probe front and back by regulating intercept and slope.
It is the same with the calibration steps of humidity that oxygen measuring probe is changed the back calibration steps.
Preferable, in the analyser of above-mentioned measurement humidity and oxygen, calculation control module also comprises: LCD, be connected with CPU (central processing unit), and be used to show oxygen concentration and humidity; Bus interface is used for oxygen concentration and humidity are outputed to communication facilities.
Preferable, in the analyser of above-mentioned measurement humidity and oxygen, calculation control module also comprises: input block (as load button), be connected with CPU (central processing unit), and be used to receive user's input.
Fig. 5 is the analyser workflow synoptic diagram according to the measurement humidity of an embodiment of the utility model and oxygen.
The technical indicator of the analyser of oxygen determination and humidity is as follows in the foregoing description:
Humidity: (0～40) Kpa; Linear error: ± 2%FS;
Zero point drift: ± 2%FS.7d; Span drift: ± 2%FS.7d;
Repeatability: 2%FS;
Oxygen: (025) %; Linear error: ± 1%FS;
Zero point drift: ± 2%FS.7d; Span drift: ± 2%FS.7d;
Repeatability: 2%FS;
Power supply: (220 ± 10%) AVC 50/60Hz;
Power: 50W;
Response time:＜20s
Working sensor temperature: (0～700) ℃;
Host work environment: (20～50) ℃;
Serviceable life: 〉=1400d.
One of ordinary skill in the art will appreciate that: accompanying drawing is the synoptic diagram of an embodiment, and module in the accompanying drawing or flow process might not be that enforcement the utility model is necessary.
One of ordinary skill in the art will appreciate that: the module in the device among the embodiment can be described according to embodiment and be distributed in the device of embodiment, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.
Above-mentioned the utility model embodiment sequence number is not represented the quality of embodiment just to description.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of programmed instruction, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above embodiment only in order to the explanation the technical solution of the utility model, is not intended to limit; Although the utility model is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that previous embodiment is put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of the utility model embodiment technical scheme.
Claims (9)
1. an analyser of measuring humidity and oxygen is characterized in that, comprising: first sampling probe, second sampling probe, first wide area than current type sensor, second wide area than current type sensor and calculation control module, wherein
Described first sampling probe is connected than current type sensor with described first wide area, and described first wide area is used for the flue gas of the described first sampling probe collection is analyzed than current type sensor, obtains first current signal;
Described second sampling probe is connected than current type sensor with described second wide area, and described second wide area is used for the flue gas of the described second sampling probe collection is analyzed than current type sensor, obtains second current signal;
Described calculation control module is connected than current type sensor with described second wide area than current type sensor with described first wide area respectively, is used for described first current signal and described second current signal are handled humidity and the oxygen content that obtains described flue gas.
2. analyser according to claim 1 is characterized in that, also comprises:
Cabinet, described calculation control module is arranged in the described cabinet.
3. analyser according to claim 1 is characterized in that, described cabinet is wall-hanging closed case.
4. analyser according to claim 1 is characterized in that, described first wide area is respectively the Bosch lambda sensor than current type sensor and described second wide area than current type sensor.
5. analyser according to claim 1 is characterized in that, but described first sampling probe and described second sampling probe adopt the structure of direct insertion blowback respectively.
6. analyser according to claim 5 is characterized in that, the inside of described first sampling probe and described second sampling probe is respectively arranged with heating rod and thermal resistance.
7. analyser according to claim 1 is characterized in that, described calculation control module comprises: current-voltage converting unit, signal processing unit, AD converting unit, CPU (central processing unit) and DA converting unit, wherein
Described current-voltage converting unit is connected with described second sampling probe with described first sampling probe, is used for described first current signal and described second current signal are converted to first voltage signal and second voltage signal respectively;
Described signal processing unit is connected between described current-voltage converting unit and the described AD converting unit, is used for described first voltage signal and described second voltage signal are amplified and filtering, and is converted to digital signal through described AD converting unit;
Described CPU (central processing unit) is connected with described AD converting unit, be used for calculating the oxygen concentration of flue gas according to the digital signal of the described first voltage signal correspondence, and calculate humidity in the flue gas, and described oxygen concentration and described humidity are separately converted to current signal and output according to the difference of the digital signal of the described first voltage signal correspondence digital signal corresponding with described second voltage signal;
Described DA converting unit is connected between described CPU (central processing unit) and described first sampling probe and described second sampling probe.
8. analyser according to claim 7 is characterized in that, described calculation control module also comprises:
LCD is connected with described CPU (central processing unit), is used to show described oxygen concentration and described humidity;
Bus interface is used for described oxygen concentration and described humidity are outputed to communication facilities.
9. analyser according to claim 8 is characterized in that, described calculation control module also comprises:
Input block is connected with described CPU (central processing unit), is used to receive user's input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205911639U CN201852816U (en) | 2010-10-29 | 2010-10-29 | Analyzer for measuring humidity and oxygen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205911639U CN201852816U (en) | 2010-10-29 | 2010-10-29 | Analyzer for measuring humidity and oxygen |
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| CN201852816U true CN201852816U (en) | 2011-06-01 |
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| CN2010205911639U Expired - Lifetime CN201852816U (en) | 2010-10-29 | 2010-10-29 | Analyzer for measuring humidity and oxygen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110945338A (en) * | 2017-07-28 | 2020-03-31 | 京瓷株式会社 | Sensor module |
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- 2010-10-29 CN CN2010205911639U patent/CN201852816U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110945338A (en) * | 2017-07-28 | 2020-03-31 | 京瓷株式会社 | Sensor module |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110601 |