A new measuring CO sampling device

Abstract

The utility model discloses a novel CO sampling device of measurement relates to gas detection field, the technical scheme of utility model discloses a plurality of sampling probe rod, each sampling probe rod distribution economizer export to the flue of denitration entrance, each sampling probe rod with the one end intercommunication of manifold, the other end of manifold extends to the air preheater export, the sampling probe of analyzer is provided to the manifold. Through multipoint sampling in reflux pipe manifold sampling detection, can more comprehensive sampling, improve the accuracy of detection, avoid denitration entrance NOx drift, CO measurement data distortion problem, and also can be cited to denitration export measurement NOx, CO by analogy.

Description

Technical Field

[0001] This utility model relates to the field of gas detection, and in particular to a novel CO sampling device. Background Technology

[0002] During boiler combustion, CO (carbon monoxide) measurement is a key indicator for assessing combustion and safety. The CO level directly reflects the completeness of combustion; excessively high CO levels indicate incomplete combustion, potentially leading to fuel waste and environmental pollution. CO is also a toxic gas, and high concentrations can harm operators. Furthermore, excessively high CO concentrations can cause high-temperature corrosion of water-cooled walls, affecting boiler safety, stability, and service life. With increasingly stringent national environmental protection requirements, CO emissions must be strictly controlled. Measuring CO levels allows for timely adjustments to combustion to reduce pollutant emissions. In conclusion, providing accurate CO parameters plays a crucial role in enabling operators to adjust combustion processes.

[0003] Currently, CO measurement and sampling devices, such as the boiler flue gas concentration detection device disclosed in patent document CN211528146U, use single-point sampling. They utilize the original denitrification inlet CMES sampling device, and the analyzer measures the CO again through the tail gas of the denitrification inlet analyzer. However, there is air leakage in the denitrification flue, the sampled gas varies greatly, the measurement data is greatly disturbed, and even the CO measurement data is zero. The measured CO data is obviously distorted. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a novel CO sampling device. By sampling at multiple points in the reflux manifold, it can achieve more comprehensive sampling, improve the accuracy of detection, and avoid problems such as NOx drift at the denitrification inlet and distortion of CO measurement data.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a novel CO sampling device, comprising several sampling probes; Each of the aforementioned sampling probes is distributed in the flue from the economizer outlet to the denitrification inlet; Each of the sampling probes is connected to one end of the manifold, and the other end of the manifold extends to the air preheater outlet. The manifold is equipped with a sampling probe of the analyzer.

[0006] In this scheme, one end of the return pipe is located in the flue from the economizer outlet to the denitrification inlet, and the other end is located in the air preheater. There is a pressure difference between the two ends, and the flue gas in the flue will easily flow to the air preheater through the manifold.

[0007] Taking multiple samples from the flue gas duct from the economizer outlet to the denitrification inlet, and then sampling and testing them after the reflux pipe converges, allows for more comprehensive sampling, improves the accuracy of testing, and avoids problems such as NOx drift at the denitrification inlet and distortion of CO measurement data.

[0008] Preferably, the sampling probe extends into the interior of the flue, enabling more effective collection of the generated flue gas.

[0009] Preferably, the sampling probe extends 180-220cm into the flue to ensure effective collection of flue gas.

[0010] Preferably, four sampling probes are distributed in the flue gas ducts from the economizer outlet to the denitrification inlet on both sides of boiler A and B. This allows for comprehensive and effective collection of flue gas from various points.

[0011] Preferably, the manifold between the sampling probe and the sampling rod is equipped with a manifold chamber to facilitate the collection of flue gas from various points.

[0012] Preferably, the manifold is equipped with a stirring paddle to combine the flue gas from various points.

[0013] Preferably, the agitator is a fan blade, which rotates relative to the manifold. The flowing flue gas drives the fan blade to rotate automatically and stir the air.

[0014] Preferably, the fan blades are axial flow fan blades, which can better agitate the flue gas.

[0015] Preferably, an air inlet and an air outlet are respectively provided on both sides of the manifold to drive the fan blades to rotate.

[0016] Preferably, the two ends of the shaft of the axial fan blade point to the air inlet and the air outlet, respectively, thereby driving the fan blade to rotate.

[0017] The beneficial effects of this utility model are: By sampling at multiple points in the reflux manifold, more comprehensive sampling can be achieved, improving the accuracy of the test and avoiding problems such as NOx drift at the denitrification inlet and distortion of CO measurement data. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only two of the drawings in this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the manifold of an embodiment of the present utility model; The components include: 1. Sampling probe; 2. Manifold; 3. Air preheater; 4. Sampling probe; 5. Analytical instrument; 6. Flue; 7. Manifold; 8. Air inlet; 9. Air outlet; 10. Agitator. Detailed Implementation

[0020] To enhance understanding of this utility model, it will be described in further detail below with reference to the accompanying drawings and embodiments. These embodiments are only used to explain this utility model and do not limit the scope of protection of this utility model.

[0021] Example 1

[0022] like Figure 1 As shown, a novel CO sampling device includes several sampling probes 1; each of the sampling probes 1 is distributed in the flue 6 from the economizer outlet to the denitrification inlet; each of the sampling probes 1 is connected to one end of a manifold 2, the other end of the manifold 2 extends to the air preheater 3 outlet, and the manifold 2 is equipped with a sampling probe 4 of an analyzer.

[0023] In this scheme, one end of the return pipe is located in the flue 6 from the economizer outlet to the denitrification inlet, and the other end is located in the air preheater 3. There is a pressure difference between the two ends, and the flue gas in the flue 6 will easily flow to the air preheater 3 through the manifold 2.

[0024] Multiple samples were taken from the flue gas duct from the economizer outlet to the denitrification inlet (6 points), and then sampled and tested after the return pipe converged. Samples taken by sampling probe 4 were analyzed by CEMS and CO analyzer 5. This method allows for more comprehensive sampling, improves detection accuracy, and avoids problems such as NOx drift at the denitrification inlet and distortion of CO measurement data.

[0025] The various detection devices in this solution are existing components and not areas for improvement, so their structures will not be described in detail.

[0026] The sampling probe 1 extends into the interior of the flue 6, enabling more effective collection of the generated flue gas.

[0027] The sampling probe 1 extends 180-220cm into the flue 6 to ensure effective collection of flue gas.

[0028] Four sampling probes 1 are distributed in the flue ducts 6 from the economizer outlet to the denitrification inlet on both sides of boiler A and B. This allows for comprehensive and effective collection of flue gas from various points.

[0029] Example 2 Compared to Embodiment 1, this embodiment also includes the following distinguishing feature: the manifold 2 between the sampling probe 4 and the sampling probe rod 1 is provided with a manifold 7 to facilitate the collection of flue gas from various points.

[0030] The manifold 7 is equipped with a stirring paddle 10 to combine the flue gas from various points.

[0031] The stirring blade 10 is a fan blade that rotates relative to the manifold 7. The flowing flue gas drives the fan blade to rotate automatically and stir the air.

[0032] The fan blades are axial flow blades, which can better agitate the flue gas.

[0033] The manifold 7 has an air inlet 8 and an air outlet 9 on both sides to drive the fan blades to rotate.

[0034] The two ends of the shaft of the axial fan blade point to the air inlet 8 and the air outlet 9, respectively, driving the fan blade to rotate.

[0035] The beneficial effects of this utility model are: By sampling at multiple points in the reflux manifold, more comprehensive sampling can be achieved, improving detection accuracy and avoiding problems such as NOx drift at the denitrification inlet and distortion of CO measurement data. The same principle can be applied to measuring NOx and CO at the denitrification outlet.

[0036] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A novel CO sampling device, characterized in that, Includes several sampling probes (1); Each of the sampling probes (1) is distributed in the flue (6) from the economizer outlet to the denitrification inlet; Each of the sampling probes (1) is connected to one end of the manifold (2), and the other end of the manifold (2) extends to the outlet of the air preheater (3). The manifold (2) is equipped with a sampling probe (4) of the analyzer.

2. The novel CO sampling device according to claim 1, characterized in that: The sampling probe (1) extends into the interior of the flue (6).

3. The novel CO sampling device according to claim 1, characterized in that: The sampling probe (1) extends 180-220cm into the flue (6).

4. The novel CO sampling device according to claim 1, characterized in that: Four sampling probes (1) are distributed in the flue (6) from the economizer outlet to the denitrification inlet on both sides of boiler A and B.

5. A novel CO sampling device according to claim 1, characterized in that: A manifold (7) is provided in the manifold (2) between the sampling probe (4) and the sampling probe rod (1).

6. A novel CO sampling device according to claim 5, characterized in that: The manifold (7) is equipped with a stirring paddle (10).

7. A novel CO sampling device according to claim 6, characterized in that: The stirring paddle (10) is a fan blade, which rotates relative to the manifold (7).

8. A novel CO sampling device according to claim 7, characterized in that: The fan blades are axial flow fan blades.

9. A novel CO sampling device according to claim 8, characterized in that: The manifold (7) is provided with an air inlet (8) and an air outlet (9) on both sides.

10. A novel CO sampling device according to claim 9, characterized in that: The two ends of the shaft of the axial flow fan point to the air inlet (8) and the air outlet (9), respectively.

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