CN216847588U - High-temperature flue gas nitrogen oxide detector of in-situ measurement method - Google Patents
High-temperature flue gas nitrogen oxide detector of in-situ measurement method Download PDFInfo
- Publication number
- CN216847588U CN216847588U CN202123364395.8U CN202123364395U CN216847588U CN 216847588 U CN216847588 U CN 216847588U CN 202123364395 U CN202123364395 U CN 202123364395U CN 216847588 U CN216847588 U CN 216847588U
- Authority
- CN
- China
- Prior art keywords
- flue gas
- temperature flue
- nitrogen oxide
- high temperature
- detector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to a pollution sources control or regional gaseous on-line monitoring technology field of blowdown discloses a high temperature flue gas nitrogen oxide detector of normal position measurement method, including detector body and high temperature resistant test probe, high temperature resistant test probe with the detector body is connected through the high temperature resistant probe rod of certain length, high temperature resistant test probe includes high temperature resistant filter and sets up the high temperature resistant nitrogen oxygen sensor in high temperature resistant filter, realizes under abominable high temperature, high dust concentration environment, adopts normal position method measuring mode to monitor the nitrogen oxide concentration in the high temperature flue gas, has innovatively solved high temperature flue gas extraction difficulty, the trouble scheduling problem of condensation, can be fast, accurate, carry out data monitoring high-efficiently, shorten the circulation route of high temperature flue gas, reduce monitoring instrument comprehensive cost, improve gaseous detection efficiency.
Description
Technical Field
The application relates to the technical field of pollution source control or online monitoring of gas in a pollution discharge area, in particular to a high-temperature flue gas nitrogen oxide detector adopting an in-situ measurement method.
Background
Along with the more serious air pollution condition in recent years in China, the proportion of haze and gas pollutants in the pollutants is more and more important, and therefore the task of air pollution detection and treatment in China is more and more important.
The detection of NOx and nitrogen oxides is particularly important when monitoring and controlling atmospheric pollution. The formation of NOx nitrogen oxides consists mainly of two parts, thermal NOx nitrogen oxides and fuel NOx nitrogen oxides, the former being composed of N contained in air involved in combustion2The latter is generated from nitrogen elements of the fuel itself.
Thermal NOx nitrogen oxides are oxygen (O) in air2) And nitrogen (N)2) NO and NO produced in high temperature environment formed during fuel combustion2And the rate of formation of NOx oxides increases exponentially with increasing temperature. Therefore, the temperature has a determining effect on the formation of thermal NOx nitrogen oxides.
Fuels such as natural gas boilers, biomass boilers, biogas boilers and the like have low nitrogen content, but have high combustion temperature, so that the source of NOx nitrogen oxides is mainly thermal NOx.
Therefore, in the field of NOx nitrogen oxide detection, particularly in the field of high-temperature flue gas in boilers and other types of high-temperature flue gas treated by a denitration device, a high-temperature flue gas nitrogen oxide detector is needed, which can directly detect the concentration of nitrogen oxide in the high-temperature flue gas. However, most of the existing nitrogen oxide monitoring technologies are detection by a removable condensation method, and the existing nitrogen oxide monitoring technologies adopt detectors of types such as a non-dispersive infrared absorption method, a non-dispersive ultraviolet absorption method, an ultraviolet differential absorption spectrum method, a chemical fluorescence method and an electrochemical method, and the detectors are optical or electrochemical components, when the temperature of flue gas is higher than 55 ℃, a circuit system of the electronic components is damaged, so that the flue gas sample gas needs to be condensed and cooled first, and then detection is performed. Under this kind of operating mode, the flue gas sample gas need only pass through long pipeline, just can detect, and monitoring cost and monitoring efficiency will receive very big influence.
SUMMERY OF THE UTILITY MODEL
In order to shorten the circulation route of high temperature flue gas, reduce monitoring instrument comprehensive cost, improve gaseous detection efficiency, the application provides the technical scheme of the high temperature flue gas nitrogen oxide detector of an in-situ measurement method:
the utility model provides a high temperature flue gas nitrogen oxide detector of normal position measurement method, includes detector body and high temperature resistant test probe, high temperature resistant test probe with the detector body is connected through the high temperature resistant probe rod of certain length, high temperature resistant test probe includes high temperature resistant filter and sets up the high temperature resistant nitrogen oxygen sensor in high temperature resistant filter.
The probe rod comprises a tubular rod body, and a wire rod sheath or/and heat insulation materials are/is filled in the rod body.
The nitrogen-oxygen sensor is a thick-film double-pool zirconium oxide nitrogen-oxygen sensor.
The detector body comprises a liquid crystal screen module, a processor module, a storage module, a data communication interface and an IO input/output interface; the liquid crystal screen module, the storage module, the data communication interface and the IO input/output interface are all in communication connection with the processor module, and the processor module is connected with the nitrogen oxygen sensor through the data communication interface.
A protective cover is arranged outside the filter.
The high-temperature flue gas nitrogen oxide detector of the in-situ measurement method further comprises an air pump, and an air outlet of the air pump is arranged opposite to a detection end of the nitrogen-oxygen sensor.
The detector body further comprises an IO control module, and the processor module is connected with the air pump through the IO control module.
The detector body also comprises an alarm signal output module.
The detector body also comprises a touch module, a USB interface, an Ethernet interface and an indicator light module which are connected with the processor module.
In summary, the present application includes at least one of the following beneficial technical effects:
1. according to the detector, the detector body and the detection probe are connected through the probe rod with a certain length, the nitrogen-oxygen sensor is arranged in the filter, high-temperature smoke with high temperature reaching 500 ℃ can be effectively resisted under severe high-temperature and high-dust concentration environments, the concentration of nitrogen oxides in the high-temperature smoke is monitored in an in-situ measurement mode, the problems of difficulty in extracting the high-temperature smoke, trouble in condensation and the like are innovatively solved, and data monitoring can be rapidly, accurately and efficiently carried out;
2. preferably, the functions of monitoring and analyzing the concentration of nitrogen oxides in high-temperature flue gas in real time, acquiring data, recording and storing, setting early warning and alarming over standard are realized, the self-blowing control device of the air pump can be started at regular time, the filter is prevented from being blocked and an analysis instrument is prevented from being crashed, the failure of monitoring and analyzing data is avoided, the normal work of the detector is not influenced after blowing, and the detector for detecting nitrogen oxides in flue gas can work in a severe working condition environment;
3. the nitrogen-oxygen sensor preferably adopts the nitrogen-oxygen sensor of thick film double cell zirconia principle, and the probe rod preferably adopts stainless steel probe rod, comes the signal line normal work of protection nitrogen-oxygen sensor under the high temperature flue gas, and nitrogen-oxygen sensor signal transmission to processor module, and then can monitor the concentration value of nitrogen oxide in the flue gas in real time.
4. The built-in large-capacity storage module avoids data leakage or tampering, and guarantees accuracy and reliability of monitoring and analyzing data.
Drawings
FIG. 1 is an architectural block diagram of the present application.
Fig. 2 is a schematic view of the overall structure of the present application.
Fig. 3 is a schematic view of a reverse purge condition of the outlet duct of the present application.
Description of reference numerals: 1. a touch module; 2. a liquid crystal screen module; 3. an alarm module; 4. an indicator light module; 5. a processor module; 6. a storage module; 7. an IO input/output interface; 8. a USB interface; 9. a data communication interface; 10. a nitrogen-oxygen sensor; 11. an IO control module; 12. an air pump; 13. a stainless steel probe rod; 14. a stainless steel filter; 15. a stainless steel protective cover; 16. and blowing back to the air outlet.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
Referring to fig. 1-3, the embodiment of the application discloses a high-temperature flue gas nitrogen oxide detector of an in-situ measurement method, which comprises a detector body and a high-temperature-resistant detection probe, wherein the detector body comprises an integrally connected liquid crystal screen module 2, a processor module 5, an alarm module 3, a storage module 6, a data communication interface 9 and an IO input/output interface 7; the liquid crystal screen module 2, the alarm module 3, the storage module 6, the data communication interface 9 and the IO input/output interface 7 are all in communication connection with the processor module 5; the high-temperature-resistant detection probe is connected with the detector body through a high-temperature-resistant probe rod 13 with a certain length, the probe rod 13 is a high-temperature-resistant heat-insulating material part, the high-temperature-resistant detection probe comprises a high-temperature-resistant filter 14 and a high-temperature-resistant nitrogen-oxygen sensor 10 arranged in the high-temperature-resistant filter 14, and the liquid crystal screen module 2 is a liquid crystal display screen and is used for displaying detected nitrogen oxide concentration data; the processor module 5 is connected with a nitrogen-oxygen sensor 10 through a data communication interface 9; the nitrogen-oxygen sensor 10 is connected to the processor module 5 through the data communication interface 9 and is used for detecting the concentration of nitrogen oxides in the gas to be detected in real time, and the nitrogen-oxygen sensor 10 preferably adopts a thick-film double-cell zirconium oxide nitrogen-oxygen sensor in the embodiment.
Preferably, the probe 13 comprises a tubular rod body, a wire sheath is arranged in the rod body or/and a heat insulation material is filled in the rod body, so that the cost can be effectively reduced, and the normal work of the pipeline in a high-temperature environment can be protected.
Further preferably, the processor module 5 is connected with an air pump 12, an air outlet of the air pump 12 is over against a detection end of the nitrogen oxygen sensor 10 in the stainless steel filter 14, the detection end of the nitrogen oxygen sensor 10 is positioned in the stainless steel filter 14, and a stainless steel protective cover 15 is arranged on the outer side of the stainless steel filter 14. An IO control module 11 is arranged on the processor module 5, the air pump 12 is connected to the processor module 5 through the IO control module, an air outlet pipe 17 is connected to the air pump 12, an air outlet of the air outlet pipe 17 faces to a detection end of the nitrogen-oxygen sensor 10, and a back flushing air outlet 16 is further arranged on the detection probe; when processor module 5 issues the instruction of starting air pump 12, switch on air pump 12 circuit and make air pump 12 begin work, air pump 12 is through on pumping into nitrogen oxygen sensor 10 with the outside air, and reverse purging nitrogen oxygen sensor 10 blows away impurity in the nitrogen oxygen sensor 10 and the particulate matter attached to the stainless steel filter 14 outside in the reverse direction.
The processor module 5 is used for processing and analyzing the real-time monitoring data of the nitrogen-oxygen sensor 10, converting the acquired real-time concentration signal value of the nitrogen-oxygen sensor unit into a digital concentration value according to signal type analysis data, outputting and displaying the digital concentration value in real time through the liquid crystal screen module 2, and storing the digital concentration value into the storage module 6;
the storage module 6 is used for storing the real-time monitoring data and the historical data processed by the processor module 5 and is read and written by the processor module 5 at any time;
the processor module 5 is connected with an alarm module 3, the alarm module comprises an audible and visual alarm, and if the concentration value exceeds a set target value, the processor module 5 can output an alarm signal through the alarm module 3.
As a preferred embodiment, the diameter of the air outlet pipe is 3-5mm, and the air outlet pipe is made of stainless steel, so that the air pressure during air outlet is increased, the air outlet pressure is increased, and the cleaning effect of impurities and dust is stronger.
The processor module 5 is in communication connection with the touch module 1, and the touch module 1 is used for enabling a human hand to touch the display screen to inquire historical records and perform multi-point calibration operation on the smoke nitrogen oxide detector, so that the operation of staff management and the like is facilitated.
Also included is an indicator light module 4 connected to the processor module 5.
The processor module 5 is connected with a USB interface 8 for connecting other external equipment, and the processor module 5 is connected with an Ethernet interface for connecting an external network.
The implementation principle of the high-temperature flue gas nitrogen oxide detector adopting the in-situ measurement method is as follows:
1. the nitrogen-oxygen sensor adopting the thick-film double-cell zirconia principle adopts an in-situ measurement mode, and a stainless steel probe rod 13 is extended into a flue gas pipeline (or a chimney) at high temperature or normal temperature, so that the nitrogen oxide concentration of flue gas sample gas in the pipeline is rapidly, accurately and efficiently monitored, and a data signal is transmitted to a processor module in real time;
2. the processor module 5 transmits the information to the liquid crystal screen module 2 in real time after processing the information, stores the data to the storage module 6, and starts an alarm system to inform a worker to process the data when the data concentration exceeds a preset value;
3. the air pump 12 pumps air, and the stainless steel filter 14 where the nitrogen-oxygen sensor 10 is located is blown and swept in a back-sounding mode at a timing task, so that stable work of the high-temperature smoke nitrogen oxide detector is guaranteed.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the principles of the present invention.
Claims (10)
1. The utility model provides a high temperature flue gas nitrogen oxide detector of normal position measurement method, includes detector body and high temperature resistant test probe, its characterized in that: the high-temperature-resistant detection probe is connected with the detector body through a high-temperature-resistant probe rod with a certain length, and comprises a high-temperature-resistant filter and a high-temperature-resistant nitrogen-oxygen sensor arranged in the high-temperature-resistant filter.
2. The high-temperature flue gas nitrogen oxide detector of the in-situ measurement method of claim 1, which is characterized in that: the probe rod comprises a tubular rod body, and a wire rod sheath or/and heat insulation materials are/is filled in the rod body.
3. The high-temperature flue gas nitrogen oxide detector of the in-situ measurement method of claim 1, which is characterized in that: the nitrogen-oxygen sensor is a thick-film double-pool zirconium oxide nitrogen-oxygen sensor.
4. The high-temperature flue gas nitrogen oxide detector of the in-situ measurement method of claim 1, which is characterized in that: the detector body comprises a liquid crystal screen module, a processor module, a storage module, a data communication interface and an IO input/output interface; the liquid crystal screen module, the storage module, the data communication interface and the IO input/output interface are all in communication connection with the processor module, and the processor module is connected with the nitrogen oxygen sensor through the data communication interface.
5. The high-temperature flue gas nitrogen oxide detector of the in-situ measurement method of claim 1, which is characterized in that: a protective cover is arranged outside the filter.
6. The high-temperature flue gas nitrogen oxide detector of the in-situ measurement method of claim 1, which is characterized in that: the high-temperature flue gas nitrogen oxide detector of the in-situ measurement method further comprises an air pump, and an air outlet of the air pump is arranged opposite to a detection end of the nitrogen-oxygen sensor.
7. The high-temperature flue gas nitrogen oxide detector of an in-situ measurement method according to claim 4, characterized in that: the high-temperature flue gas nitrogen oxide detector of the in-situ measurement method further comprises an air pump, and an air outlet of the air pump is arranged opposite to a detection end of the nitrogen-oxygen sensor.
8. The high-temperature flue gas nitrogen oxide detector of in-situ measurement of claim 7, wherein: the detector body further comprises an IO control module, and the processor module is connected with the air pump through the IO control module.
9. The high-temperature flue gas nitrogen oxide detector of the in-situ measurement method of claim 4, wherein: the detector body also comprises an alarm signal output module.
10. The high-temperature flue gas nitrogen oxide detector of the in-situ measurement method of claim 4, wherein: the detector body also comprises a touch module, a USB interface, an Ethernet interface and an indicator light module which are connected with the processor module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123364395.8U CN216847588U (en) | 2021-12-29 | 2021-12-29 | High-temperature flue gas nitrogen oxide detector of in-situ measurement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123364395.8U CN216847588U (en) | 2021-12-29 | 2021-12-29 | High-temperature flue gas nitrogen oxide detector of in-situ measurement method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216847588U true CN216847588U (en) | 2022-06-28 |
Family
ID=82113089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123364395.8U Active CN216847588U (en) | 2021-12-29 | 2021-12-29 | High-temperature flue gas nitrogen oxide detector of in-situ measurement method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216847588U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115931976A (en) * | 2022-12-26 | 2023-04-07 | 武汉泰肯环保科技发展有限公司 | Denitration system NOx concentration in-situ monitoring device based on double-pool thick-film zirconia |
-
2021
- 2021-12-29 CN CN202123364395.8U patent/CN216847588U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115931976A (en) * | 2022-12-26 | 2023-04-07 | 武汉泰肯环保科技发展有限公司 | Denitration system NOx concentration in-situ monitoring device based on double-pool thick-film zirconia |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201335967Y (en) | On-line monitoring system for emission of industrial fumes and flue gases | |
| KR100890062B1 (en) | Sample gas sampleing probe unit and exhaust gas telemetering system using the same | |
| CN203941102U (en) | A kind of solid waste incineration is processed on-line analysis system | |
| US5627328A (en) | Gas sampling system and method | |
| US7771654B1 (en) | Apparatus for monitoring gaseous components of a flue gas | |
| CN105675801A (en) | Continuous flue gas emission monitoring system | |
| CN202994770U (en) | System for monitoring smoke continuously | |
| CA2250685C (en) | Air contamination monitor | |
| CN106840264A (en) | A kind of continuous on-line monitoring system of flue gas | |
| CN103852438A (en) | Online solid waste incineration treatment analysis system | |
| CN104297020A (en) | Flue gas pollution collection device and method | |
| CN207263223U (en) | A kind of coal-fired plant flue gas purifier monitors system | |
| CN216847588U (en) | High-temperature flue gas nitrogen oxide detector of in-situ measurement method | |
| CN116148321A (en) | CEMS system data processing-based high-precision carbon emission monitoring system | |
| CN202614743U (en) | Solid waste smoke on-line monitoring and analyzing device | |
| CN102721791A (en) | Verifying method and verifying device for flue gas emission continuous monitoring system | |
| BRPI1010448A2 (en) | burner monitoring burner tower pilots | |
| CN204944994U (en) | A kind of high-humidity gas fume dust concentration on-line measuring device | |
| CN104048995A (en) | Diffuser diagnostic for in-situ flue gas measurement device | |
| CN209857956U (en) | Continuous emission monitoring system of flue gas | |
| CN108195786A (en) | A kind of out of stock CEMS systems on-Line Monitor Device | |
| CN104406932B (en) | The determination of uv absorption method of stationary source waste gas sulfur dioxide | |
| CN213455605U (en) | Continuous monitoring system for smoke emission | |
| CN214668559U (en) | Ultralow CEMS continuous emission monitoring devices of flue gas | |
| CN206656751U (en) | A kind of continuous on-line monitoring system of flue gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |