Flue gas parameter analysis device

Abstract

This utility model discloses a flue gas parameter analysis device, comprising: a detection box mechanism including a sampling device, the sampling device including a sampling tube having a flue gas inlet end and a flue gas outlet end; and an analysis and detection device configured to be connected to the flue gas outlet end for detecting the composition and pressure of the flue gas. According to this utility model's flue gas parameter analysis device, by setting up an analysis and detection device capable of detecting both flue gas composition and flue gas pressure, the device can simultaneously generate multiple different aspects of detection data at the same measuring point, thereby increasing the correlation between detection results and improving the accuracy of boiler combustion status analysis. Simultaneously, it can reduce the use of detection equipment, thereby reducing the time required for equipment replacement and improving detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of flue gas analysis and measurement technology, and in particular to a flue gas parameter analysis device. Background Technology

[0002] In the operation of coal-fired power plant boilers, flue gas composition testing is a core method for evaluating combustion efficiency, pollutant formation characteristics, and boiler operating status. However, existing detection systems consist of independent flue gas analyzers, temperature sensors, micromanometers, and other equipment, with a total weight exceeding 8 kg and dimensions of 400×300×200 mm. 3 Multiple sets of cables and adapters need to be carried on site, and the wiring time accounts for 25% of the total test time. In addition, each device needs to be operated separately, which leads to the fragmentation of multi-parameter detection functions and the inability to obtain multi-dimensional data of the same measurement point simultaneously, which seriously affects the calculation accuracy of the combustion model. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a flue gas parameter analysis device that can simultaneously generate multiple different aspects of detection data at the same measuring point, thereby increasing the correlation between the detection results and improving the accuracy of boiler combustion condition analysis.

[0004] The flue gas parameter analysis device according to this utility model is used to analyze and detect the flue gas of a coal-fired power unit boiler, comprising: a sampling device, the sampling device including: a sampling tube having a flue gas inlet end and a flue gas outlet end; and an analysis and detection device configured to be connected to the flue gas outlet end for detecting the composition and pressure of the flue gas.

[0005] According to the flue gas parameter analysis device of this utility model, by setting up an analysis and detection device that can detect both flue gas components and flue gas pressure, the flue gas parameter analysis device can simultaneously generate multiple different aspects of detection data at the same measurement point, thereby increasing the correlation between the detection results and improving the accuracy of boiler combustion status analysis; at the same time, it can also reduce the use of detection equipment, thereby reducing the time required for equipment replacement and improving detection efficiency.

[0006] According to some embodiments of the present invention, the analytical detection device includes: a housing with an installation space inside; an electrochemical sensor and a pressure sensor, both arranged within the installation space; the electrochemical sensor for detecting the components and concentrations of the flue gas; and the pressure sensor for detecting the relative pressure of the flue gas.

[0007] According to some embodiments of the present invention, the housing has a first air inlet and a second air inlet. The first air inlet is connected to the gas passage of the electrochemical sensor, and the second air inlet is connected to the gas passage of the pressure sensor. The sampling device further includes a diverter, a first connecting pipe, and a second connecting pipe. The diverter has a first inlet, a first outlet, and a second outlet. The flue gas outlet is connected to the first inlet. The first outlet is connected to the first air inlet through the first connecting pipe, and the second outlet is connected to the second air inlet through the second connecting pipe.

[0008] According to some embodiments of the present invention, the sampling device further includes: a filter and a first control valve, the filter and the first control valve being connected in series on the first connecting pipe, the filter being used to filter impurities in the flue gas, and the first control valve being used to control the opening and closing of the first connecting pipe; and a second control valve, the second control valve being connected in series on the second connecting pipe, and the second control valve being used to control the opening and closing of the second connecting pipe.

[0009] According to some embodiments of the present invention, the analytical detection device further includes: an air pump, the air inlet of which is connected to the first air inlet, and the air outlet of which is connected to the air passage of the electrochemical sensor; a cyclone dust collector and a condensation dehumidification module, wherein the cyclone dust collector and the condensation dehumidification module are sequentially connected between the air pump and the electrochemical sensor along the flow direction of the flue gas.

[0010] According to some embodiments of the present invention, a static pressure balance hole is also formed on the housing, and the pressure sensor includes: a first channel and a second channel arranged in parallel, the first channel being connected to the second air inlet so that the pressure sensor can detect the absolute pressure of the flue gas, and the second channel being connected to the external environment through the static pressure balance hole so that the pressure sensor can detect the ambient pressure.

[0011] According to some embodiments of the present invention, the flue gas parameter analysis device further includes: a thermocouple, which is detachably connected to the radial outside of the sampling tube, with the temperature measuring end of the thermocouple close to the flue gas inlet end; the analysis and detection device further includes: a temperature analysis unit, which is arranged in the installation space and electrically connected to the thermocouple to receive the electrical signal from the thermocouple and convert the electrical signal into a temperature value.

[0012] According to some embodiments of the present invention, the analytical detection device further includes: a central controller, which is arranged within the installation space and electrically connected to the temperature analysis unit, the electrochemical sensor, and the pressure sensor. The central controller includes: a control panel and / or control buttons, which are fixed to the upper surface of the housing; and / or, the analytical detection device further includes: a power supply, which is arranged within the installation space and electrically connected to the temperature analysis unit, the electrochemical sensor, and the pressure sensor for supplying power to the temperature analysis unit, the electrochemical sensor, and the pressure sensor.

[0013] According to some embodiments of the present invention, the sampling tube includes: a handle, the handle extending radially along the sampling tube, the handle being disposed at one end of the sampling tube near the flue gas outlet end, and the handle being detachably connected to the sampling tube.

[0014] According to some embodiments of the present invention, the sampling tube includes a plurality of sub-sampling tubes, which are sequentially connected along the length of the sampling tube, and two connected sub-sampling tubes are detachably connected.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] Figure 1 This is a schematic diagram showing the connection between the sampling device and the thermocouple according to an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the analysis and detection device according to an embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of a shunt according to an embodiment of the present utility model;

[0019] Figure 4 This is a schematic diagram of a sub-sampling tube according to an embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of a sub-sampling tube according to another embodiment of the present invention;

[0021] Figure 6 This is a schematic diagram of a self-locking stainless steel cable tie according to an embodiment of the present utility model.

[0022] Figure label:

[0023] 10. Sampling device; 11. Sampling tube; 111. Sub-sampling tube; 112. Handle; 12. Diverter; 121. First inlet; 122. First outlet; 123. Second outlet; 13. Filter; 14. First control valve; 15. Second control valve; 16. First connecting pipe; 17. Second connecting pipe; 18. Self-locking stainless steel cable tie;

[0024] 20. Analytical and testing device; 21. Housing; 211. First air inlet; 212. Second air inlet; 213. Static pressure balance hole; 214. Exhaust port; 215. Heat dissipation hole; 216. Temperature measurement interface; 217. USB interface; 218. Charging interface; 22. Central controller; 221. Control panel; 222. Control buttons; 23. Thermocouple; 231. Plug. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0026] The following is for reference. Figures 1-6 This invention describes a flue gas parameter analysis device according to an embodiment of the present invention.

[0027] The flue gas parameter analysis device according to an embodiment of this utility model is used to analyze and detect the flue gas of a coal-fired power unit boiler, with reference to... Figure 1 and Figure 2 The flue gas parameter analysis device includes a sampling device 10 and an analysis and detection device 20. The sampling device 10 is used to extend into the flue to obtain flue gas and then transport the flue gas to the analysis and detection device 20 for detection.

[0028] Specifically, the sampling device 10 includes: a sampling tube 11 having a flue gas inlet end and a flue gas outlet end; and an analysis and detection device 20 configured to be connected to the flue gas outlet end for detecting the composition and pressure of the flue gas.

[0029] It is understood that the analysis and detection device 20 can be used to detect both the composition and pressure of flue gas. That is, when the sampling tube 11 is inserted into a certain detection point and the flue gas at that point is obtained, the analysis and detection device 20 in this embodiment can both detect and analyze the composition and the flue gas pressure at that point. Thus, it is understood that the flue gas parameter analysis device in this embodiment can simultaneously generate multiple different aspects of detection data at the same measurement point. This can increase the correlation between detection results, thereby improving the accuracy of boiler combustion status analysis. At the same time, it can also reduce the use of detection equipment, thereby reducing the time required for equipment replacement and improving detection efficiency.

[0030] It should be noted that the flue gas inlet and flue gas outlet are defined relative to the flow direction of the flue gas entering the sampling tube 11. That is, the flue gas inlet of the sampling tube 11 is the port that extends into the flue to obtain the flue gas, and the flue gas outlet is the end that delivers the flue gas to the analysis and detection device 20 away from the inlet.

[0031] Specifically, when testing is required, the operator inserts the sampling tube 11 into the flue. The flue gas enters the sampling tube 11 from the flue gas inlet end and is then transported to the analysis and testing device 20 through the flue gas outlet end for analysis and testing.

[0032] According to the flue gas parameter analysis device of this utility model embodiment, by setting up an analysis and detection device 20 that can detect both flue gas components and flue gas pressure, the flue gas parameter analysis device can simultaneously generate multiple different aspects of detection data at the same measurement point, thereby increasing the correlation between the detection results and improving the accuracy of boiler combustion status analysis; at the same time, it can also reduce the use of detection equipment, thereby reducing the time required for equipment replacement and improving detection efficiency.

[0033] According to some embodiments of this utility model, refer to Figure 2 The analytical detection device 20 includes a housing 21, an electrochemical sensor, and a pressure sensor. The housing 21 has an internal installation space. Both the electrochemical sensor and the pressure sensor are located within this space. The electrochemical sensor detects the components and concentrations of the flue gas, while the pressure sensor detects the relative pressure of the flue gas. It is understood that the electrochemical sensor and pressure sensor are integrated into one unit via the housing 21. This avoids the need for multiple independent devices occupying excessive space, reduces the number of components, and makes the analytical detection device 20 easy to carry and move, facilitating rapid on-site deployment and mobile use.

[0034] According to some embodiments of this utility model, refer to Figure 2The housing 21 has a first air inlet 211 and a second air inlet 212. The first air inlet 211 is connected to the air passage of the electrochemical sensor, and the second air inlet 212 is connected to the air passage of the pressure sensor. The sampling device 10 also includes a diverter 12, a first connecting pipe 16, and a second connecting pipe 17. The diverter 12 has a first inlet 121, a first outlet 122, and a second outlet 123. The flue gas outlet is connected to the first inlet 121, the first outlet 122 is connected to the first air inlet 211 through the first connecting pipe 16, and the second outlet 123 is connected to the second air inlet 212 through the second connecting pipe 17. It can be understood that the flue gas can pass through the diverter 12 and then through the first connecting pipe 16 to enter the electrochemical sensor for flue gas component analysis, or through the second connecting pipe 17 to enter the pressure sensor for pressure analysis. This allows the analysis and detection device 20 to acquire multi-dimensional data at the same measuring point, thereby improving the accuracy of combustion model calculations.

[0035] According to some embodiments of this utility model, refer to Figure 3 The sampling device 10 also includes a filter 13, a first control valve 14, and a second control valve 15. The filter 13 and the first control valve 14 are connected in series on the first connecting pipe 16. The filter 13 is used to filter impurities in the flue gas, and the first control valve 14 is used to control the opening and closing of the first connecting pipe 16. The second control valve 15 is connected in series on the second connecting pipe 17 and is used to control the opening and closing of the second connecting pipe 17. Specifically, the filter 13 can effectively remove fine particulate matter, oil stains, and harmful gas impurities from the flue gas, preventing impurities from clogging the electrochemical sensor, thereby extending the service life of the equipment. At the same time, it can also ensure that the flue gas sample entering the electrochemical sensor has high purity and strong representativeness, thereby significantly improving the accuracy of flue gas component measurement. The first control valve 14 and the second control valve 15 can control whether the flue gas flows out from the first connecting pipe 16 or the second connecting pipe 17. In this way, the flue gas flow direction can be easily switched between different measurement interfaces, thereby meeting diverse flue gas parameter measurement needs.

[0036] Optionally, filter 13 is a removable filter 13, which makes it easy to replace the filter element and thus reduces maintenance costs.

[0037] Optionally, the filter element of filter 13 is a high-temperature filter element, and the filter element includes active adsorption material. This ensures the safety of use of filter 13 while also removing impurities more effectively.

[0038] According to some embodiments of this utility model, the analysis and detection device 20 further includes: an air pump, a cyclone dust collector, and a condensation and dehumidification module. The air pump's inlet is connected to the first air inlet 211, and the air pump's outlet is connected to the gas passage of the electrochemical sensor. The cyclone dust collector and the condensation and dehumidification module are sequentially connected between the air pump and the electrochemical sensor along the flow direction of the flue gas. Specifically, the air pump is mainly used to provide driving force for the flow of flue gas in the sampling tube 11; the cyclone dust collector is mainly used to remove particles ≥10μm from the flue gas; and the condensation and dehumidification module is mainly used to remove water from the flue gas to ensure that the dew point is ≤-40℃, thereby improving the accuracy of flue gas analysis.

[0039] According to some embodiments of this utility model, refer to Figure 3 The housing 21 also has a static pressure balance hole 213. The pressure sensor includes a first channel and a second channel arranged in parallel. The first channel is connected to the second air inlet 212 to allow the pressure sensor to detect the absolute pressure of the flue gas. The second channel is connected to the external environment through the static pressure balance hole 213 to allow the pressure sensor to detect the ambient pressure. Specifically, the absolute pressure and ambient pressure can be detected simultaneously, allowing the pressure sensor to directly output relative pressure. Relative pressure usually refers to the pressure difference relative to atmospheric pressure, which more directly reflects the actual working condition of the combustion process and ventilation system inside the boiler. For example, it can more accurately indicate the working efficiency of the fan, whether the flue is blocked, etc., thus making it easier to detect problems such as air leakage and blockage, thereby helping to quickly locate and solve problems.

[0040] Optionally, an exhaust port 214 is also formed on the housing 21, through which residual gas can be discharged, thus preventing the accumulation of residual gas and improving the safety of the detection device.

[0041] According to some embodiments of this utility model, refer to Figure 1 The flue gas parameter analysis device also includes a thermocouple 23, which is detachably connected to the radial outer side of the sampling tube 11. The temperature measuring end of the thermocouple 23 is close to the flue gas inlet. The analysis and detection device 20 also includes a temperature analysis unit, which is arranged in the installation space and electrically connected to the thermocouple 23 to receive the electrical signal from the thermocouple 23 and convert the electrical signal into a temperature value. Specifically, the temperature measuring end of the thermocouple 23 contacts the flue gas being measured, and the electrical connection end of the thermocouple 23 is led out to the temperature analysis unit arranged in the analysis and detection device 20 to realize the measurement of flue gas temperature. That is to say, the analysis and detection device 20 of this embodiment can simultaneously analyze and detect the flue gas temperature while analyzing and detecting the composition or pressure of the flue gas. In other words, the analysis and detection device 20 of this embodiment can simultaneously acquire multi-dimensional data of the same measuring point, thereby improving the calculation accuracy of the combustion model.

[0042] It should be noted that the thermocouple 23 in this embodiment is a dual-channel K-type thermocouple 23. A temperature measurement interface 216 is formed on the housing 21. The electrical connection terminal of the thermocouple 23 is a plug 231, which is connected to the temperature measurement interface 216 to realize the transmission of electrical signals. Further, it should be noted that the dual-channel K-type thermocouple 23 utilizes the Seebeck effect to obtain electrical signals. Specifically, when the nickel-chromium / nickel-silicon alloy (two different metals) junction of the K-type thermocouple 23 is heated, a voltage signal proportional to the temperature difference is generated due to the Seebeck effect. The electrical signal is transmitted to the temperature analysis unit through the plug 231. The temperature analysis unit converts the electrical signal into a temperature value using a built-in ITS-90 standard thermocouple 23 calibration table.

[0043] Optionally, the thermocouple 23 is arranged in parallel on the radial outer side of the sampling tube 11, and the thermocouple 23 and the sampling tube 11 are connected by a self-locking stainless steel cable tie 18, which can improve the connection stability between the thermocouple 23 and the sampling tube 11.

[0044] According to some embodiments of this utility model, the analysis and detection device 20 further includes a central controller 22, which is arranged in the installation space and electrically connected to the temperature analysis unit, the electrochemical sensor, and the pressure sensor. The central control unit can be used to receive and analyze signals from the temperature analysis unit, the electrochemical sensor, and the pressure sensor to manage or store the data after flue gas detection.

[0045] Optionally, the central controller 22 includes functions such as intelligent calibration, fault diagnosis, data management, and data display. Specifically, intelligent calibration is performed upon power-on, such as automatically running sensor zero-point calibration (introducing ambient air for 30 seconds) when the equipment starts up, verifying whether the oxygen concentration is close to 21%, detecting the ambient pressure and returning it to zero, to ensure the accuracy of subsequent detection results.

[0046] Fault diagnosis includes: real-time monitoring of sensor status, such as alarms for thermocouple 23 disconnection, low flow warnings due to filter blockage, and alarms for abnormal batteries (e.g., red flashing alarm when battery level is <10%, automatic data saving and shutdown when battery level is <5%). This effectively prevents more serious equipment problems, thereby reducing maintenance costs.

[0047] Data management includes data storage and data output. The measured data can be selected for data storage, with a default of 5 seconds per group and support for cyclic overwrite. In addition, the housing 21 of the analysis and detection device 20 is also equipped with a USB interface 217, which allows operators to export CSV or EXCEL format files for data recording and storage.

[0048] The central controller 22 includes a control panel 221 and / or control buttons 222, which are fixed to the upper surface of the housing 21. It is understood that the central controller 22 may include only the control panel 221, only the control buttons 222, or both. The control panel 221 can display detection data to provide operators with a more intuitive understanding of the monitoring results; the control buttons can be used to switch or start / stop sensors to automate the detection process.

[0049] Optionally, the control panel 221 features a split-screen interactive design for data display, with a 1:1 split ratio (real-time data on the left screen and dynamic curves on the right screen), and includes a capacitive touchscreen that supports gesture switching. This allows for a one-step automation improvement in the analysis and testing process.

[0050] According to some embodiments of this utility model, the analytical detection device 20 further includes a power supply, which is arranged within the installation space and electrically connected to the temperature analysis unit, the electrochemical sensor, and the pressure sensor to supply power to them. The power supply can store electrical energy to power the temperature analysis unit, the electrochemical sensor, and the pressure sensor, thereby ensuring their normal operation.

[0051] Optionally, the power supply is located at the bottom of the housing 21 and is a quick-release lithium battery pack. The battery pack is detachably connected to the bottom via a buckle, which allows the operator to replace the battery by hand. This allows the operator to carry a spare battery according to the working time and working environment, effectively extending the equipment's battery life. As a result, the analysis and testing device 20 can meet the continuous operation requirements of long-term testing or complex working conditions.

[0052] Optionally, the battery pack has a built-in intelligent power balancing chip, and a three-pin anti-misinsertion charging interface 218 is formed on the housing 21 to cooperate with it. It is compatible with industrial-grade power adapters, realizes 24V safe voltage input and overcurrent protection, and ensures safe and stable charging process.

[0053] Optionally, the housing 21 adopts a one-piece molding process. Multiple heat dissipation layers are arranged sequentially from top to bottom on the side wall of the housing 21. Each heat dissipation layer has multiple heat dissipation holes 215 arranged in a matrix. The channels of the heat dissipation holes 215 are angled at 15°, thus forming a hot air flow channel. This allows for passive heat dissipation through air convection without the need for additional active cooling components, thereby controlling the operating temperature of the processor and battery pack below 55°C and ensuring stable continuous operation. Simultaneously, a metal dustproof mesh is provided on one side of the multiple heat dissipation holes 215. This effectively prevents dust and other impurities from entering the housing 21 and damaging the equipment inside, thereby extending the equipment's lifespan.

[0054] According to some embodiments of this utility model, refer to Figure 1 and Figure 4 The sampling tube 11 includes a handle 112, which extends radially along the sampling tube 11 and is located at one end of the sampling tube 11 near the flue gas outlet. The handle 112 is detachably connected to the sampling tube 11. This effectively prevents accidental slippage of the sampling tube 11 during flue gas sampling in a vertical test flue, thus preventing damage to expensive and delicate boiler equipment. Furthermore, when performing grid sampling in a vertical flue, the operator can quickly and accurately move the sampling gun across the flue cross-section by holding the handle 112 and pushing it, enabling efficient multi-point sampling and improving the safety and efficiency of the flue gas sampling process. Additionally, the detachable connection between the handle 112 and the sampling tube 11 allows for replacement of only the damaged component if either the handle 112 or the sampling tube 11 is damaged, thereby reducing the maintenance cost of the sampling tube 11.

[0055] According to some embodiments of this utility model, refer to Figure 1 and Figures 4-5 The sampling tube 11 includes multiple sub-sampling tubes 111, which are sequentially connected along the length of the sampling tube 11, and two connected sub-sampling tubes 111 are detachably connected. It is understood that the multiple sub-sampling tubes 111 can be flexibly spliced ​​according to actual conditions, enabling the sampling tube 11 to effectively adapt to the needs of flue gas ducts of different widths, thereby ensuring accurate measurement of flue gas parameters under various complex working conditions. Furthermore, the detachable connection makes the sampling tube 11 easier to disassemble and assemble, thus improving its portability during transportation.

[0056] It should be noted that there are various ways to detach the connection. For example, it can be a threaded connection, such as one end of each sub-sampling tube 111 having an internal thread and the other end having an external thread, with the sub-sampling tubes 111 connected by a threaded fit. In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0057] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0058] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0059] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0060] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A flue gas parameter analysis device for analyzing and detecting flue gas from a coal-fired power plant boiler, characterized in that, include: Sampling device (10), the sampling device (10) includes: sampling tube (11), the sampling tube (11) having a flue gas inlet end and a flue gas outlet end; An analytical detection device (20) is configured to be connected to the flue gas outlet end for detecting the composition of the flue gas and the pressure of the flue gas.

2. The flue gas parameter analysis device according to claim 1, characterized in that, The analytical detection device (20) includes: The housing (21) has an installation space inside; An electrochemical sensor and a pressure sensor are provided, both of which are arranged within the installation space. The electrochemical sensor is used to detect the components and concentrations of the flue gas, and the pressure sensor is used to detect the relative pressure of the flue gas.

3. The flue gas parameter analysis device according to claim 2, characterized in that, The housing (21) has a first air inlet (211) and a second air inlet (212). The first air inlet (211) is connected to the gas channel of the electrochemical sensor, and the second air inlet (212) is connected to the gas channel of the pressure sensor. The sampling device (10) further includes: a diverter (12), a first connecting pipe (16), and a second connecting pipe (17). The diverter (12) has a first inlet (121), a first outlet (122), and a second outlet (123). The flue gas outlet is connected to the first inlet (121). The first outlet (122) is connected to the first air inlet (211) through the first connecting pipe (16). The second outlet (123) is connected to the second air inlet (212) through the second connecting pipe (17).

4. The flue gas parameter analysis device according to claim 3, characterized in that, The sampling device (10) further includes: A filter (13) and a first control valve (14) are connected in series on the first connecting pipe (16). The filter (13) is used to filter impurities in the flue gas, and the first control valve (14) is used to control the opening and closing of the first connecting pipe (16). The second control valve (15) is connected in series with the second connecting pipe (17) and is used to control the opening and closing of the second connecting pipe (17).

5. The flue gas parameter analysis device according to claim 3, characterized in that, The analytical detection device (20) further includes: An air pump, the air inlet of which is connected to the first air inlet (211), and the air outlet of which is connected to the air passage of the electrochemical sensor. A cyclone dust collector and a condensation dehumidification module are sequentially connected between the air pump and the electrochemical sensor along the flow direction of the flue gas.

6. The flue gas parameter analysis device according to claim 3, characterized in that, The housing (21) also has a static pressure balance hole (213). The pressure sensor includes a first channel and a second channel arranged in parallel. The first channel is connected to the second air inlet (212) so that the pressure sensor can detect the absolute pressure of the flue gas. The second channel is connected to the external environment through the static pressure balance hole (213) so that the pressure sensor can detect the ambient pressure.

7. The flue gas parameter analysis device according to claim 2, characterized in that, The flue gas parameter analysis device further includes a thermocouple (23), which is detachably connected to the radial outside of the sampling tube (11), with the temperature measuring end of the thermocouple (23) close to the flue gas inlet end. The analysis and detection device (20) further includes a temperature analysis unit, which is arranged in the installation space and is electrically connected to the thermocouple (23) to receive the electrical signal of the thermocouple (23) and convert the electrical signal into a temperature value.

8. The flue gas parameter analysis device according to claim 7, characterized in that, The analytical detection device (20) further includes a central controller (22), which is arranged within the installation space and is electrically connected to the temperature analysis unit, the electrochemical sensor, and the pressure sensor. The central controller (22) includes: a control panel (221) and / or control buttons (222), wherein the control panel (221) and / or the control buttons (222) are fixed to the upper surface of the housing (21); and / or, The analytical detection device (20) further includes a power supply, which is arranged in the installation space and electrically connected to the temperature analysis unit, the electrochemical sensor and the pressure sensor to supply power to the temperature analysis unit, the electrochemical sensor and the pressure sensor.

9. The flue gas parameter analysis device according to claim 1, characterized in that, The sampling tube (11) includes a handle (112) extending radially along the sampling tube (11) and disposed at one end of the sampling tube (11) near the flue gas outlet. The handle (112) is detachably connected to the sampling tube (11).

10. A flue gas parameter analysis device according to claim 1, characterized in that, The sampling tube (11) includes a plurality of sub-sampling tubes (111), which are connected sequentially along the length of the sampling tube (11), and two connected sub-sampling tubes (111) are detachably connected.

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