CN111443168A - Boiler flue gas nitrogen oxide monitoring alarm system - Google Patents
Boiler flue gas nitrogen oxide monitoring alarm system Download PDFInfo
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- CN111443168A CN111443168A CN202010341471.4A CN202010341471A CN111443168A CN 111443168 A CN111443168 A CN 111443168A CN 202010341471 A CN202010341471 A CN 202010341471A CN 111443168 A CN111443168 A CN 111443168A
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- nitrogen oxide
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- flue gas
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- 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
- G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method, e.g. intermittent, or the display, e.g. digital
- G01N33/0063—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method, e.g. intermittent, or the display, e.g. digital using a threshold to release an alarm or displaying means
Abstract
The invention relates to a boiler flue gas nitrogen oxide monitoring and alarming system, which comprises a nitrogen oxide detector, a data receiving and preprocessing device, a network center device, a data analysis device and an alarming device, wherein the data receiving and preprocessing device receives nitrogen oxide concentration data detected by the nitrogen oxide detector, preprocesses the nitrogen oxide concentration data and transmits the data to the network center device, the data analysis device analyzes the preprocessed data transmitted from the network center device and then transmits the data to the alarming device, and when the nitrogen oxide concentration value received by the alarming device exceeds a specified limit value, an alarm is given. The nitrogen oxide monitoring and alarming system provided by the invention has a simple principle, is convenient to operate, and can find whether the concentration of nitrogen oxide at the smoke exhaust part of the boiler meets the national emission requirement or not in time, thereby realizing environmental protection and effectively avoiding environmental pollution.
Description
Technical Field
The invention relates to the technical field of boiler emission testing, in particular to a boiler flue gas nitrogen oxide monitoring and alarming system.
Background
After the reform is opened, with the continuous development of economy, environmental problems are highlighted day by day. The major environmental problems including nitrogen oxides have not been solved. Environmental pollution problems due to fossil fuels have become more severe in recent years, such as haze, greenhouse effect, air pollution, acid rain, and sand storm. The main reasons are caused by combustion emission of various industrial furnaces, straw combustion, automobile exhaust emission and the like. Nitrogen Oxides (NO)x) Mainly composed of NO and NO2、N2O、N2O3、N2O4、N2O5A mixture of nitrogen oxides, and the most significant of the nitrogen oxides are NO and NO2When the nitrogen oxide meets water vapor in the air, the combination of the nitrogen oxide and the water vapor can cause serious natural disasters such as acid rain, photochemical smog and the like to seriously damage the natural environment on which the human lives and cause greenhouse effect. In addition, the disasters can indirectly cause the water and soil quality to deteriorate, and affect the normal growth of crops and livestock, so that a vicious circle is formed, more serious and severe atmospheric environmental pollution problems are caused, and the health of human beings is greatly damaged. Fuel such as fuel oil, coal and the like can generate a large amount of nitrogen oxides in the combustion process, and the nitrogen oxides account for NO in ChinaxAbove 1/3 total emissions. At present, the serious air pollution problem causes high attention of relevant government departments in China, a series of powerful measures are taken to rectify waste gas, and various nitrogen oxide detection instruments are made to come out.
However, at present, no boiler nitrogen oxide monitoring and alarming system is available for alarming the content of nitrogen oxide discharged by flue gas, the nitrogen oxide data can only be detected manually, the system is not convenient, and the system is not suitable for low nitrogen oxide discharge required by environmental protection departments, so that the development of the nitrogen oxide monitoring and alarming system suitable for boilers is urgently needed.
Disclosure of Invention
The invention aims to provide a boiler flue gas nitrogen oxide monitoring and alarming system to solve the existing technical problems.
In order to solve the above problems, the invention provides a boiler flue gas nitrogen oxide monitoring and alarming system, comprising:
the nitrogen oxide detector is positioned at the discharge position of a discharge flue of the boiler and is used for detecting the concentration of nitrogen oxide in the flue gas;
a data receiving and pre-processing device;
the network center equipment is a control end of the system and is electrically connected with the data receiving and preprocessing equipment;
the data analysis equipment is electrically connected with the network center equipment;
the alarm device is electrically connected with the data analysis device;
the data receiving and preprocessing device receives the concentration data of the nitrogen oxide detected by the nitrogen oxide detector, preprocesses the data and transmits the data to the network center device, the data analysis device analyzes the preprocessed data transmitted from the network center device and then transmits the data to the alarm device, and when the concentration value of the nitrogen oxide received by the alarm device exceeds a specified limit value, the alarm device gives an alarm.
Preferably, the nitrogen oxide detector is provided with a probe, and the probe is inserted into a discharge position of a discharge flue of the boiler.
Preferably, the probe is made of corrosion-resistant stainless steel.
Preferably, the nitrogen oxide detector is provided with an air pump, a cooler and a condensation tank, the cooler cools the flue gas sucked by the air pump to form condensed water in the condensation tank, and the condensed water is automatically discharged when the condensed water in the condensation tank reaches a specified water level.
Preferably, the nitrogen oxide detector is provided with a processor, and the processor is an editable logic processor and can edit the limit value of the nitrogen oxide.
Preferably, the data receiving and preprocessing device is an intelligent device, data preprocessing software is installed on the data receiving and preprocessing device, and a detector inputs the concentration data of the nitrogen oxides detected by the nitrogen oxide detector into the data preprocessing software.
Preferably, the nitrogen oxide detector is electrically connected to the data receiving and preprocessing device.
Preferably, the data receiving and preprocessing device and the data analysis device are respectively connected with the network center device through a mobile network or wireless communication.
Preferably, the data analysis device is a notebook computer, data analysis software is installed in the notebook computer, and the data analysis software converts the concentration data of the nitrogen oxides into electric signals and transmits the electric signals to the alarm device.
Preferably, the alarm device comprises an information receiving module, a signal transmission module, an alarm control module and an alarm lamp, wherein the information receiving module is connected with the signal transmission module, and the alarm control module is respectively connected with the signal transmission module and the alarm lamp;
the information receiving module is connected with the data analysis equipment through a mobile network or a wireless communication module, when the concentration data of the nitric oxide analyzed by the data analysis equipment exceeds a specified limit value, an electric signal is sent to the alarm control module through the signal transmission module, the alarm control module controls the alarm lamp to start, and at the moment, the alarm lamp rings and flashes.
Compared with the prior art, the invention has the following technical effects:
the nitrogen oxide monitoring and alarming system provided by the invention has a simple principle, is convenient to operate, and can find whether the concentration of nitrogen oxide at the smoke exhaust part of the boiler meets the national emission requirement or not in time, thereby realizing environmental protection and effectively avoiding environmental pollution.
The nitrogen oxide monitoring and alarming system provided by the invention can effectively monitor the nitrogen oxide data information discharged by the boiler equipment, monitor the boiler equipment, and check the boiler equipment on site after the data is in problem, thereby greatly saving labor force and improving the accuracy and effectiveness of the data.
Drawings
FIG. 1 is a schematic structural diagram of a boiler flue gas nitrogen oxide monitoring and alarming system according to a preferred embodiment of the present invention;
FIG. 2 is a block diagram of a nitrogen oxide detector provided in accordance with a preferred embodiment of the present invention;
fig. 3 is a block diagram of an alarm device according to a preferred embodiment of the present invention.
Detailed Description
The following detailed description is made with reference to the accompanying drawings, which illustrate an embodiment.
Referring to fig. 1 to 3, a boiler flue gas nitrogen oxide monitoring and alarming system includes:
the nitrogen oxide detector 2 is positioned at the discharge position of the discharge flue 1 of the boiler and is used for detecting the concentration of nitrogen oxide in the flue gas;
a data receiving and pre-processing device 3;
the network center equipment 4 is a control end of the system and is electrically connected with the data receiving and preprocessing equipment 3;
the data analysis equipment 5 is electrically connected with the network center equipment 4;
the alarm device 6 is electrically connected with the data analysis device 5;
the data receiving and preprocessing device 3 receives the concentration data of the nitrogen oxides detected by the nitrogen oxide detector 2, preprocesses the data and transmits the data to the network center device 4, the data analyzing device 5 analyzes the preprocessed data transmitted from the network center device 4 and then transmits the data to the alarm device 6, and when the concentration value of the nitrogen oxides received by the alarm device 6 exceeds a specified limit value, an alarm is given.
The nitrogen oxide detector 2 is a mature prior art, and therefore, the present invention will not be described in detail with respect to its specific structure, but will be described in detail with respect to specific applications of its components. In this embodiment, the nitrogen oxide detector 2 is provided with a probe, the probe is connected with the nitrogen oxide detector 2, and the probe is inserted into the discharge position of the discharge flue 1 of the boiler. The highest exhaust smoke temperature can reach 300 ℃, so the probe is made of materials capable of resisting 300 ℃, has high strength and is not easy to bend, the anti-corrosion stainless steel material is preferably used for the probe in the embodiment, the probe is made of the anti-corrosion stainless steel material and is tightly connected with the exhaust flue 1, the anti-corrosion stainless steel pipe or the rubber pipe is preferably used for the probe and is connected with the nitrogen oxide detector, and the anti-corrosion stainless steel pipe is preferably used for the probe and is connected with the nitrogen oxide detector 2 in the embodiment.
The nitrogen oxide detector 2 is further provided with an air suction pump, a cooler and a condensation tank, wherein the cooler cools flue gas sucked by the air suction pump into the condensation tank to form condensed water, and when the condensed water in the condensation tank reaches a specified water level, the condensed water is automatically discharged, so that smoke dust and particulate matters are effectively filtered.
The nitrogen oxide detector 2 is also provided with an automatic processor 22 and a nitrogen oxide sensor 23, so that the content of nitrogen oxide can be detected at any time in a boiler plant, and the environmental pollution can be effectively prevented. The processor 22 can be selected from various types, and can be selected according to actual conditions in the implementation process, and the editable logic processor 22 is selected in the patent and can edit the limited value of the nitrogen oxide. In this embodiment, the flue gas enters the nitrogen oxide detector, is cooled and condensed in the condensation tank, and only dry flue gas is left after the temperature is reduced and moisture and particulate matters are removed, and the flue gas enters the nitrogen oxide sensor 23 for measurement.
The nitrogen oxide detector 2 is also provided with a built-in memory 24, and the built-in memory 24 stores nitrogen oxide concentration data so that a user can check the nitrogen oxide concentration data at any time.
The nitrogen oxide detector 2 is further provided with a power module 21, such as a battery pack, which is a lithium battery pack with a mature technology in the embodiment, and provides sufficient power for the nitrogen oxide detector 2.
The nitrogen oxide detector 2 is further provided with a display module 25, such as a display, and the sensor 23, the display module 25 and the power module 21 are electrically connected to the processor 22 respectively.
In the present invention, the nitrogen oxide detector 2 may or may not be electrically connected to the data receiving and preprocessing device 3, and the following description will be made for both cases.
As an embodiment, the data receiving and preprocessing device 3 is an intelligent device, such as a portable smart phone or a tablet, and the data receiving and preprocessing device 3 is installed with data preprocessing software, and a detector inputs the concentration data of the nitrogen oxides detected by the nitrogen oxide detector 2 into the data preprocessing software.
As another example, referring to fig. 2, the nitrogen oxide detector 2 is electrically connected to the data receiving and preprocessing device 3 (through a mobile network or a wireless communication connection, such as a USB connection), and the nitrogen oxide concentration data detected by the nitrogen oxide detector 2 is directly transmitted to the data receiving and preprocessing device 3. In this embodiment, the above-mentioned manually input data is replaced by automatic transmission, that is, the data receiving and preprocessing device 3 is an intelligent device, such as a portable smart phone or a tablet, the data receiving and preprocessing device 3 is provided with data preprocessing software, and the concentration data of the nitrogen oxide detected by the nitrogen oxide detector 2 is automatically transmitted to the data preprocessing software.
The data receiving and preprocessing equipment 3 is connected with the network center equipment 4 through a mobile network or wireless communication (such as WiFi), and gives an alarm when abnormal data occurs to remind field staff to check the point survey.
The data analysis device 5 is connected with the network center device 4 through a mobile network or wireless communication (such as WiFi), the data analysis device 5 may be a portable notebook computer, data analysis software is installed in the notebook computer, and the data analysis software converts the concentration data of the nitrogen oxides into an electric signal and transmits the electric signal to the alarm device 6.
Referring to fig. 3, the alarm device 6 is a device that can be discovered, preferably an alarm, but is not limited thereto. In this embodiment, the alarm device 6 is provided with a controller and an alarm lamp 34, the controller includes an information receiving module 31, a signal transmission module 32 and an alarm control module 33, the information receiving module 31 is connected with the signal transmission module 32, and the alarm control module 33 is respectively connected with the signal transmission module 32 and the alarm lamp 34;
the information receiving module 31 is connected with the data analysis device 5 through a mobile network or a wireless communication module, when the concentration data of the nitrogen oxides analyzed by the data analysis device 5 exceeds a specified limit value, the information receiving module 31 sends an electric signal to the alarm control module 33 through the signal transmission module 32, the alarm control module 33 controls the alarm lamp 34 to start, and at the moment, the alarm lamp 34 rings and flashes. Further, after the alarm control module 33 receives the nitrogen oxide exceeding signal, the alarm button is started, the alarm lamp 34 starts to make a sound and flicker, and the sound changes according to the size of the transmitted signal, and the larger the electric signal is, the higher the concentration of the nitrogen oxide is, and the louder the sound is.
In this embodiment, the data analysis device 5 is placed in the hand of the inspector, automatically screens out abnormal data, analyzes the data, and sends the data to the information receiving module 31 of the alarm device 6.
The nitrogen oxide monitoring alarm system that this embodiment provided can effectively monitor boiler equipment and discharge nitrogen oxide data information to monitor boiler equipment, go after the data goes wrong to the scene inspect can, saved the labour greatly and improved data accuracy and validity, alright carry out data analysis or even controlgear to equipment after data acquisition simultaneously, compare at the mode of on-the-spot monitoring data with artifical in the past, saved manpower and material resources, let the on-the-spot nitrogen oxide detect and become effectively rapidly.
In the embodiment, the connection is performed by applying application technologies such as a sensor network, wireless communication and a database, and 24-hour real-time monitoring on boiler equipment is realized.
The disclosure above is only one specific embodiment of the present application, but the present application is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present application.
Claims (10)
1. The utility model provides a boiler flue gas nitrogen oxide monitoring alarm system which characterized in that includes:
the nitrogen oxide detector is positioned at the discharge position of a discharge flue of the boiler and is used for detecting the concentration of nitrogen oxide in the flue gas;
a data receiving and pre-processing device;
the network center equipment is a control end of the system and is electrically connected with the data receiving and preprocessing equipment;
the data analysis equipment is electrically connected with the network center equipment;
the alarm device is electrically connected with the data analysis device;
the data receiving and preprocessing device receives the concentration data of the nitrogen oxide detected by the nitrogen oxide detector, preprocesses the data and transmits the data to the network center device, the data analysis device analyzes the preprocessed data transmitted from the network center device and then transmits the data to the alarm device, and when the concentration value of the nitrogen oxide received by the alarm device exceeds a specified limit value, the alarm device gives an alarm.
2. The boiler flue gas nitrogen oxide monitoring and alarming system of claim 1, wherein the nitrogen oxide detector is provided with a probe, and the probe is inserted into a discharge place of a discharge flue of a boiler.
3. The boiler flue gas nitrogen oxide monitoring and alarming system of claim 2, wherein the probe is made of corrosion-resistant stainless steel material.
4. The boiler flue gas nitrogen oxide monitoring and alarming system of claim 1, wherein the nitrogen oxide detector is provided with an air suction pump, a cooler and a condensation tank, the cooler cools flue gas sucked by the air suction pump to form condensed water in the condensation tank, and when the condensed water in the condensation tank reaches a specified water level, the condensed water is automatically discharged.
5. The boiler flue gas nitrogen oxide monitoring and alarming system of claim 1, wherein the nitrogen oxide detector is provided with a processor, the processor is an editable logic processor, and limit values of nitrogen oxides can be edited.
6. The boiler flue gas nitrogen oxide monitoring and alarming system of claim 1, wherein the data receiving and preprocessing device is an intelligent device, data preprocessing software is installed on the data receiving and preprocessing device, and a detector inputs nitrogen oxide concentration data detected by the nitrogen oxide detector into the data preprocessing software.
7. The boiler flue gas nitrogen oxide monitoring and alarming system of claim 1, wherein the nitrogen oxide detector is electrically connected with the data receiving and preprocessing device.
8. The boiler flue gas nitrogen oxide monitoring and alarming system of claim 1, wherein the data receiving and preprocessing device and the data analyzing device are respectively connected with a network center device through a mobile network or wireless communication.
9. The boiler flue gas nitrogen oxide monitoring and alarming system of claim 1, wherein the data analysis device is a notebook computer, and data analysis software is installed in the notebook computer and converts concentration data of nitrogen oxides into electric signals to be transmitted to the alarming device.
10. The boiler flue gas nitrogen oxide monitoring and alarming system of claim 1, wherein the alarming device comprises an information receiving module, a signal transmission module, an alarm control module and an alarm lamp, wherein the information receiving module is connected with the signal transmission module, and the alarm control module is respectively connected with the signal transmission module and the alarm lamp;
the information receiving module is connected with the data analysis equipment through a mobile network or a wireless communication module, when the concentration data of the nitric oxide analyzed by the data analysis equipment exceeds a specified limit value, an electric signal is sent to the alarm control module through the signal transmission module, the alarm control module controls the alarm lamp to start, and at the moment, the alarm lamp rings and flashes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010341471.4A CN111443168A (en) | 2020-04-26 | 2020-04-26 | Boiler flue gas nitrogen oxide monitoring alarm system |
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| CN202010341471.4A CN111443168A (en) | 2020-04-26 | 2020-04-26 | Boiler flue gas nitrogen oxide monitoring alarm system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112774415A (en) * | 2020-12-17 | 2021-05-11 | 国网河北省电力有限公司电力科学研究院 | Nitrogen oxide conversion device and flue gas monitoring system |
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