Anti-blocking and corrosion flue gas monitoring sampling probe and sampling method

Abstract

This invention discloses a flue gas monitoring sampling probe and sampling method that prevents clogging and corrosion, belonging to the technical field of flue gas monitoring sampling probes. It includes a corrosion-resistant probe body, a mounting plate fixedly installed at one end of the outer side of the probe body, a controller fixedly installed at the upper end of the mounting plate, an anti-clogging filter screen inside the probe body, a soot blowing assembly on the mounting plate to prevent the anti-clogging filter from clogging, a rotating cleaning assembly on the probe body for cleaning the surface of the anti-clogging filter, an outer protective shell inside the probe body, and a temperature control layer inside the outer protective shell. The soot blowing assembly includes a backflushing device fixedly installed at the upper end of the mounting plate and an annular backflushing pipe fixedly connected to the output end of the backflushing device and surrounding the outer side of the probe body. This invention has the advantages of corrosion and clogging prevention, significantly improving the sampling efficiency of the sampling probe.

Description

Technical Field

[0001] This invention relates to the field of flue gas monitoring sampling probe technology, specifically to a flue gas monitoring sampling probe and sampling method that is resistant to clogging and corrosion. Background Technology

[0002] Flue gas monitoring sampling probes are the core front-end components of continuous flue gas monitoring systems for stationary pollution sources. They are mainly used to collect representative flue gas samples from emission outlets such as industrial flues and chimneys, and then transport them to back-end analytical instruments to achieve accurate monitoring of pollutant concentrations in the flue gas.

[0003] Traditional flue gas monitoring sampling probes mostly use only a single-layer filter or lack an active anti-clogging structure, relying solely on the flue gas flow rate to scour the filter surface. In flue gas conditions with high dust concentrations, such as sintering flue gas from power plants and steel mills, particulate matter easily accumulates and caking on the filter surface, causing blockage of the sampling channel in a short time, leading to a sharp drop or even interruption in sampling flow, directly affecting the continuity of monitoring data. At the same time, the internal protection structure of traditional probes is simple, mostly a single-layer metal shell, such as ordinary 304 stainless steel, without a dedicated anti-corrosion lining. When facing flue gas containing corrosive components such as sulfur oxides, nitrogen oxides, and hydrogen chloride, the shell is easily corroded and perforated, leading to flue gas leakage and probe failure. Summary of the Invention

[0004] The purpose of this invention is to provide a flue gas monitoring sampling probe and sampling method that is resistant to clogging and corrosion, and has the advantages of corrosion resistance and clogging resistance, thus solving the problem that existing flue gas monitoring sampling probes cannot achieve efficient corrosion resistance and clogging resistance.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A flue gas monitoring sampling probe that is resistant to clogging and corrosion includes a corrosion-resistant probe body, a mounting plate fixedly installed at one end of the outer side of the corrosion-resistant probe body, a controller fixedly installed at the upper end of the mounting plate, an anti-clogging filter screen inside the corrosion-resistant probe body, a soot blowing component for preventing the anti-clogging filter screen from clogging by blowing air on the mounting plate, a rotating cleaning component for cleaning the surface of the anti-clogging filter screen on the corrosion-resistant probe body, an outer protective shell inside the corrosion-resistant probe body, a temperature control layer inside the outer protective shell, and an anti-corrosion protective layer made of polytetrafluoroethylene inside the temperature control layer.

[0006] Preferably, the soot blowing assembly includes a back-blowing device fixedly mounted on the upper end of the fixed mounting plate, and an annular back-blowing pipe fixedly connected to the output end of the back-blowing device and surrounding the outside of the anti-corrosion probe body.

[0007] It is worth noting that the annular backflush pipe is arranged around the outside of the anti-corrosion probe body, which can evenly distribute the high-pressure airflow output by the backflush device to each air blowing head, ensuring that the air output pressure of each air blowing head is consistent, realizing uniform backflush of the anti-clogging filter screen, and avoiding blockage caused by inadequate backflush in some areas; however, it is necessary to ensure the sealing of the connection between the annular backflush pipe and the backflush device and air blowing head during installation to prevent airflow leakage.

[0008] Preferably, the inner wall of the anti-corrosion probe body is provided with multiple air blowing heads at the outer position of the anti-clogging filter, and the air blowing heads are connected to the annular back-blowing pipe, with the air blowing head outlet direction facing the surface of the anti-clogging filter.

[0009] It is worth noting that the air blowing head is located on the outside of the anti-clogging filter and the air outlet direction is towards the filter surface. This allows the high-pressure airflow delivered by the annular backflushing pipe to be accurately sprayed onto the filter surface, directly washing away the attached dust particles and improving the targeting and efficiency of backflushing to clear blockages. However, it is important to ensure that the air outlet direction of the air blowing head is accurately aligned with the anti-clogging filter surface to avoid deviation that would reduce the clearing effect.

[0010] Preferably, the rotating cleaning assembly includes a support side plate fixedly installed on the outside of the anti-corrosion probe body and a servo motor fixedly installed on the upper end of the support side plate.

[0011] It is worth noting that the servo motor, as the power source of the rotating cleaning component, can provide stable and adjustable rotational power to drive the subsequent pulleys and cleaning rods to actively clean the surface of the anti-clogging filter. However, it is necessary to ensure proper linkage and debugging with the controller to ensure that the motor start-stop and speed adjustment are precise and controllable.

[0012] Preferably, a first anti-corrosion cover is fitted on the outside of the servo motor, and a vertical rotating shaft is fixedly connected to the outside of the output end of the servo motor.

[0013] It is worth noting that the vertical rotating shaft, as a power transmission component, can transmit the rotational power of the servo motor to the drive pulley, realizing the directional transmission of power; however, it is necessary to lubricate the vertical rotating shaft regularly to reduce rotational friction resistance and avoid wear or jamming of the vertical rotating shaft.

[0014] Preferably, a drive pulley is fixedly installed on the outside of the vertical rotating shaft, and a drive belt is connected to the outside of the drive pulley.

[0015] It is worth noting that the drive pulley is fixed on the outside of the vertical rotating shaft and can rotate synchronously with the shaft. It drives the transmission belt through friction to achieve secondary power transmission. However, it is necessary to check the wear of the pulley teeth regularly. If the tooth surface is severely worn or deformed, it needs to be replaced in time.

[0016] Preferably, a driven pulley is connected to the outside of the drive belt, and a second anti-corrosion cover is fitted on the outside of the drive pulley, the drive belt, and the driven pulley.

[0017] It is worth noting that the second anti-corrosion cover is installed on the outside of the drive pulley, transmission belt and driven pulley. It can isolate corrosive fumes and dust, prevent transmission components from being corroded or jammed, and ensure the stable operation of the transmission system. However, it is necessary to ensure the airtightness of the cover and reserve appropriate maintenance openings to facilitate the later maintenance of transmission components.

[0018] Preferably, a rotating rod is fixedly installed on the side of the driven pulley, and an anti-clogging cleaning rod is detachably connected to the outside of the rotating rod. The inner side of the anti-clogging cleaning rod is provided with cleaning bristles that fit against the surface of the anti-clogging filter.

[0019] It is worth noting that the cleaning brush bristles adhere to the surface of the anti-clogging filter screen and can penetrate deep into the filter screen pores when rotated to brush away the attached fine particles, making up for the shortcomings of the back-flushing component in cleaning stubborn dust. However, care should be taken to avoid the cleaning brush bristles coming into contact with high-temperature flue gas or corrosive substances to prevent the bristles from aging and deforming.

[0020] A method for flue gas monitoring and sampling that prevents clogging and corrosion, the method being based on the aforementioned flue gas monitoring and sampling probe that prevents clogging and corrosion, comprising: Start the controller, which triggers the soot blowing assembly to operate. The soot blowing assembly sprays high-pressure airflow toward the surface of the anti-clogging filter to initially sweep away the particulate matter attached to the surface of the anti-clogging filter. At the same time, the controller starts the rotating cleaning component to brush the surface of the anti-clogging filter with soft bristles to remove stubborn particles remaining after the high-pressure airflow is blown away. During this process, the outer protective shell provides external protection for the internal components of the anti-corrosion probe body, the temperature control layer regulates the internal temperature of the anti-corrosion probe body to prevent flue gas from condensing and forming an acidic water film, and the anti-corrosion protective layer made of polytetrafluoroethylene directly isolates the corrosive components in the flue gas, protecting the anti-corrosion probe body and internal components from corrosion. After being cleaned by both the soot blowing assembly and the rotating brush assembly, the anti-clogging filter ensures that the flue gas passes through smoothly, enabling stable sampling and monitoring of the flue gas. The entire process is precisely controlled by the controller, which automatically adjusts the blowing pressure of the soot blowing assembly and the rotation speed of the rotating brush assembly according to the clogging status of the anti-clogging filter.

[0021] Compared with the prior art, the present invention has at least the following beneficial technical effects: This invention provides a flue gas monitoring sampling probe and sampling method that prevents clogging and corrosion. The soot blowing component blows high-pressure air onto the surface of the anti-clogging filter, blowing away the dust adhering to the filter and preventing particulate matter from accumulating and hardening. This reduces the probability of filter clogging at the source, ensures unobstructed sampling channels, and extends the filter cleaning cycle. The rotating cleaning component and the soot blowing component form a dual anti-clogging combination of "blowing + brushing". The mechanical rotation drives the cleaning component to brush against the filter surface, removing stubborn dust that the soot blowing component failed to clean, resulting in a more thorough anti-clogging effect, especially suitable for flue gas conditions with high dust concentrations. At the same time, the anti-corrosion protective layer has excellent acid and alkali resistance and corrosion resistance. It directly contacts the flue gas and firmly isolates corrosive components in the flue gas, preventing the probe body from being corroded and perforated, significantly extending the probe's service life, and also preventing corrosion products from mixing into the flue gas sample and affecting monitoring accuracy. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the annular backflush pipe of the present invention; Figure 3 This is a three-dimensional structural diagram of the air blowing head of the present invention; Figure 4 This is a three-dimensional disassembled structural diagram of the second anti-corrosion outer cover of the present invention; Figure 5 This is a three-dimensional structural diagram of the anti-clogging cleaning brush rod of the present invention.

[0024] Explanation of reference numerals in the attached figures: 1. Corrosion-resistant probe body; 2. Fixed mounting plate; 3. Controller; 4. Anti-clogging filter; 101. Outer protective shell; 102. Temperature control layer; 103. Corrosion-resistant protective layer; 501. Backflush device; 502. Annular backflush pipe; 503. Air blowing head; 601. Support side plate; 602. Servo motor; 603. First anti-corrosion cover; 604. Vertical rotating shaft; 605. Drive pulley; 606. Transmission belt; 607. Driven pulley; 608. Second anti-corrosion cover; 609. Rotating rod; 610. Anti-clogging cleaning rod. Detailed Implementation

[0025] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0026] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "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 used only for the convenience of describing this invention 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 invention.

[0027] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In this invention, 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 invention according to the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] It should be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0031] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0032] The accompanying drawings illustrate various structural schematic diagrams according to embodiments disclosed in this invention. These drawings are not to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0033] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0034] Example 1 Please see Figure 1-5 The present invention provides a flue gas monitoring sampling probe that is resistant to clogging and corrosion, comprising a corrosion-resistant probe body 1. The probe body 1 is characterized by having a fixed mounting plate 2 fixedly installed at one end of its outer side, a controller 3 fixedly installed at the upper end of the mounting plate 2, an anti-clogging filter 4 inside the probe body 1, a soot blowing assembly on the mounting plate 2 to prevent the anti-clogging filter 4 from clogging the blowing air, a rotating cleaning assembly on the probe body 1 for cleaning the surface of the anti-clogging filter 4, an outer protective shell 101 inside the probe body 1, a temperature control layer 102 inside the outer protective shell 101, and a corrosion-resistant protective layer 103 made of polytetrafluoroethylene inside the temperature control layer 102.

[0035] During operation, the controller 3 is activated, which triggers the soot blowing assembly to operate. The soot blowing assembly sprays high-pressure airflow toward the surface of the anti-clogging filter 4 to initially clean the particles attached to the surface of the anti-clogging filter 4. At the same time, the controller 3 starts the rotating cleaning component to brush the soft bristles of the cleaning component to adhere to the surface of the anti-clogging filter 4 and remove stubborn particles remaining after the high-pressure airflow is blown away. During this process, the outer protective shell 101 provides external protection for the internal components of the anti-corrosion probe body 1, the temperature control layer 102 regulates the internal temperature of the anti-corrosion probe body 1 to prevent flue gas from condensing and forming an acidic water film, and the anti-corrosion protective layer 103 made of polytetrafluoroethylene directly isolates the corrosive components in the flue gas, protecting the anti-corrosion probe body 1 and its internal components from corrosion. After being cleaned by both the soot blowing assembly and the rotating brush assembly, the anti-clogging filter 4 ensures that the flue gas passes through smoothly, enabling stable sampling and monitoring of the flue gas. The entire process is precisely controlled by the controller 3, which automatically adjusts the blowing pressure of the soot blowing assembly and the rotation speed of the rotating brush assembly according to the clogging status of the anti-clogging filter 4.

[0036] In this embodiment, the soot blowing assembly includes a back-blowing device 501 fixedly installed on the upper end of the fixed mounting plate 2, and an annular back-blowing pipe 502 fixedly connected to the output end of the back-blowing device 501 and surrounding the outside of the anti-corrosion probe body 1.

[0037] In this embodiment, the inner wall of the anti-corrosion probe body 1 is provided with multiple air blowing heads 503 corresponding to the outer position of the anti-clogging filter 4, and the air blowing heads 503 are connected to the annular backflushing pipe 502. The air blowing head 503 is directed towards the surface of the anti-clogging filter 4, which can accurately spray the high-pressure airflow delivered by the annular backflushing pipe 502 onto the surface of the anti-clogging filter 4, directly flushing the attached dust particles and improving the targeting and efficiency of backflushing to clear blockages.

[0038] In this embodiment, the rotating cleaning assembly includes a support side plate 601 fixedly installed on the outside of the anti-corrosion probe body 1 and a servo motor 602 fixedly installed on the upper end of the support side plate 601.

[0039] In this embodiment, a first anti-corrosion cover 603 is provided on the outside of the servo motor 602.

[0040] In this embodiment, a vertical rotating shaft 604 is fixedly connected to the outer side of the output end of the servo motor 602. A drive pulley 605 is fixedly mounted on the outer side of the vertical rotating shaft 604, and a drive belt 606 is drivenly connected to the outer side of the drive pulley 605.

[0041] In this embodiment, a driven pulley 607 is connected to the outer side of the transmission belt 606, and a second anti-corrosion cover 608 is fitted on the outer side of the driving pulley 605, the transmission belt 606, and the driven pulley 607.

[0042] In this embodiment, a rotating rod 609 is fixedly installed on the side of the driven pulley 607. An anti-clogging cleaning rod 610 is detachably connected to the outside of the rotating rod 609. The inner side of the anti-clogging cleaning rod 610 is provided with cleaning bristles that fit against the surface of the anti-clogging filter screen 4. The cleaning bristles fit against the surface of the anti-clogging filter screen 4 and can penetrate into the pores of the anti-clogging filter screen 4 when rotating, brushing away the attached fine particles and making up for the shortcomings of the back-flushing component in cleaning stubborn dust.

[0043] Example 2 Please see Figure 1-5 This invention provides a flue gas monitoring sampling probe that is resistant to clogging and corrosion. It includes a corrosion-resistant probe body 1, a mounting plate 2 fixedly installed at one end of the outer side of the probe body 1, a controller 3 fixedly installed at the upper end of the mounting plate 2, an anti-clogging filter 4 inside the probe body 1, a soot blowing assembly on the mounting plate 2 to prevent the anti-clogging filter 4 from clogging the blowing air, a rotating cleaning assembly on the probe body 1 for cleaning the surface of the anti-clogging filter 4, an outer protective shell 101 inside the probe body 1, a temperature control layer 102 inside the outer protective shell 101, and a corrosion-resistant protective layer 103 made of polytetrafluoroethylene inside the temperature control layer 102. The corrosion-resistant protective layer 103 has excellent acid and alkali resistance and corrosion resistance. Being in direct contact with flue gas, it can firmly isolate corrosive components in the flue gas, preventing the probe body 1 from being corroded and perforated, significantly extending the service life of the probe body 1, and also preventing corrosion products from mixing into the flue gas sample and affecting the monitoring accuracy.

[0044] The dust blowing assembly includes a back-blowing device 501 fixedly installed on the upper end of the fixed mounting plate 2, and an annular back-blowing pipe 502 fixedly connected to the output end of the back-blowing device 501 and surrounding the outside of the anti-corrosion probe body 1. Multiple air blowing heads 503 are provided on the inner wall of the anti-corrosion probe body 1 at the outer position corresponding to the anti-clogging filter 4, and the air blowing heads 503 are connected to the annular back-blowing pipe 502. The air outlet direction of the air blowing heads 503 is towards the surface of the anti-clogging filter 4. The air blowing heads 503 are located at the outer position of the anti-clogging filter 4, and the air outlet direction is towards the surface of the anti-clogging filter 4. This allows the high-pressure airflow delivered by the annular back-blowing pipe 502 to be accurately sprayed onto the surface of the anti-clogging filter 4, directly flushing away the attached dust particles and improving the targeting and efficiency of back-blowing for cleaning.

[0045] The rotating cleaning assembly includes a support side plate 601 fixedly installed on the outside of the anti-corrosion probe body 1, a servo motor 602 fixedly installed on the upper end of the support side plate 601, a first anti-corrosion cover 603 sleeved on the outside of the servo motor 602, a vertical rotating shaft 604 fixedly connected to the outside of the output end of the servo motor 602, a drive pulley 605 fixedly installed on the outside of the vertical rotating shaft 604, a drive belt 606 drivingly connected to the outside of the drive pulley 605, and a driven pulley 606 drivingly connected to the outside of the drive belt 606. 07. The drive pulley 605, the transmission belt 606, and the driven pulley 607 are all fitted with a second anti-corrosion cover 608. A rotating rod 609 is fixedly installed on the side of the driven pulley 607. An anti-clogging cleaning rod 610 is detachably connected to the outside of the rotating rod 609. The inner side of the anti-clogging cleaning rod 610 is provided with cleaning bristles that fit against the surface of the anti-clogging filter screen 4. The cleaning bristles fit against the surface of the anti-clogging filter screen 4 and can penetrate into the pores of the anti-clogging filter screen 4 when rotating, brushing away the attached fine particles and making up for the shortcomings of the back-flushing component in cleaning stubborn dust.

[0046] Working principle: Start the controller 3, which triggers the back-blowing device 501 to run. The high-pressure airflow generated by the back-blowing device 501 is delivered to the annular back-blowing pipe 502. The annular back-blowing pipe 502 evenly distributes the airflow to multiple sets of air blowing heads 503. The air blowing heads 503 spray high-pressure airflow toward the surface of the anti-clogging filter screen 4 to initially sweep away the particulate matter attached to the surface of the anti-clogging filter screen 4. Simultaneously, controller 3 starts servo motor 602. Under the protection of the first anti-corrosion cover 603, servo motor 602 drives vertical rotating shaft 604 to rotate. Vertical rotating shaft 604 drives drive pulley 605 to rotate. Drive pulley 605 drives driven pulley 607 to rotate through transmission belt 606. Drive pulley 605, transmission belt 606, and driven pulley 607 are stably transmitted under the protection of the second anti-corrosion cover 608. Driven pulley 607 drives rotating rod 609 to rotate. Rotating rod 609 drives anti-clogging cleaning brush rod 610 to rotate. The cleaning soft bristles on the inner side of anti-clogging cleaning brush rod 610 adhere to the surface of anti-clogging filter screen 4 to clean and remove stubborn particles remaining after high-pressure airflow purging. During this process, the outer protective shell 101 provides external protection for the internal components of the anti-corrosion probe body 1, the temperature control layer 102 regulates the internal temperature of the anti-corrosion probe body 1 to prevent flue gas from condensing and forming an acidic water film, and the anti-corrosion protective layer 103 made of polytetrafluoroethylene directly isolates the corrosive components in the flue gas, protecting the anti-corrosion probe body 1 and its internal components from corrosion. After being cleaned by both the soot blowing assembly and the rotating brush assembly, the anti-clogging filter 4 ensures that the flue gas passes through smoothly, enabling stable sampling and monitoring of the flue gas. The entire process is precisely controlled by the controller 3, which automatically adjusts the blowing pressure of the soot blowing assembly and the rotation speed of the rotating brush assembly according to the clogging status of the anti-clogging filter 4.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0048] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made based on the technical concept proposed in this invention shall fall within the scope of protection of the claims of this invention.

Claims

1. A clogging and corrosion resistant flue gas monitoring sampling probe comprising a corrosion resistant probe body (1), characterized in that, A fixed mounting plate (2) is fixedly installed on one side of the anti-corrosion probe body (1). A controller (3) is fixedly installed on the upper end of the fixed mounting plate (2). An anti-clogging filter (4) is provided inside the anti-corrosion probe body (1). A dust blowing component is provided on the fixed mounting plate (2) to prevent the anti-clogging filter (4) from clogging the blowing air. A rotating cleaning component is provided on the anti-corrosion probe body (1) to clean the surface of the anti-clogging filter (4) in an anti-clogging manner. An outer protective shell (101) is provided inside the anti-corrosion probe body (1). A temperature control layer (102) is provided inside the outer protective shell (101). An anti-corrosion protective layer (103) made of polytetrafluoroethylene is provided inside the temperature control layer (102).

2. A clogging and corrosion resistant flue gas monitoring sampling probe according to claim 1, characterized in that, The soot blowing assembly includes a back-blowing device (501) fixedly installed on the upper end of the fixed mounting plate (2) and an annular back-blowing pipe (502) fixedly connected to the output end of the back-blowing device (501) and surrounding the outside of the anti-corrosion probe body (1).

3. The anti-clogging and anti-corrosion flue gas monitoring sampling probe according to claim 2, characterized in that, Multiple air blowing heads (503) are provided on the inner wall of the anti-corrosion probe body (1) corresponding to the outer side of the anti-clogging filter (4), and the air blowing heads (503) are connected to the annular back-blowing pipe (502). The air blowing head (503) is directed towards the surface of the anti-clogging filter (4).

4. The anti-clogging and anti-corrosion flue gas monitoring sampling probe according to claim 1, characterized in that, The rotating cleaning assembly includes a support side plate (601) fixedly installed on the outside of the anti-corrosion probe body (1) and a servo motor (602) fixedly installed on the upper end of the support side plate (601).

5. The anti-clogging and anti-corrosion flue gas monitoring sampling probe according to claim 4, characterized in that, The servo motor (602) is fitted with a first anti-corrosion cover (603).

6. The anti-clogging and anti-corrosion flue gas monitoring sampling probe according to claim 5, characterized in that, A vertical rotating shaft (604) is fixedly connected to the outer side of the output end of the servo motor (602).

7. The anti-clogging and anti-corrosion flue gas monitoring sampling probe according to claim 6, characterized in that, A drive pulley (605) is fixedly installed on the outside of the vertical rotating shaft (604), and a drive belt (606) is connected to the outside of the drive pulley (605).

8. The anti-clogging and anti-corrosion flue gas monitoring sampling probe according to claim 7, characterized in that, A driven pulley (607) is connected to the outside of the drive belt (606). A second anti-corrosion cover (608) is fitted on the outside of the drive pulley (605), the drive belt (606) and the driven pulley (607).

9. A flue gas monitoring sampling probe for preventing clogging and corrosion according to claim 8, characterized in that, A rotating rod (609) is fixedly installed on the side of the driven pulley (607). An anti-clogging cleaning rod (610) is detachably connected to the outside of the rotating rod (609). The inner side of the anti-clogging cleaning rod (610) is provided with cleaning bristles that fit against the surface of the anti-clogging filter (4).

10. A flue gas monitoring and sampling method to prevent clogging and corrosion, characterized in that, This method is based on a clogging and corrosion-resistant flue gas monitoring sampling probe according to any one of claims 1 to 9, comprising: Start the controller (3), which triggers the soot blowing assembly to operate. The soot blowing assembly sprays high-pressure airflow toward the surface of the anti-clogging filter (4) to initially blow away the particles attached to the surface of the anti-clogging filter (4). At the same time, the controller (3) starts to rotate the cleaning component and the cleaning soft bristles adhere to the surface of the anti-clogging filter (4) to clean and remove stubborn particles remaining after the high-pressure airflow is blown away. During this process, the outer protective shell (101) provides external protection for the internal components of the anti-corrosion probe body (1), the temperature control layer (102) regulates the internal temperature of the anti-corrosion probe body (1) to prevent flue gas from condensing and forming an acidic water film, and the anti-corrosion protective layer (103) made of polytetrafluoroethylene directly isolates the corrosive components in the flue gas, protecting the anti-corrosion probe body (1) and its internal components from corrosion. After being cleaned by both the soot blowing assembly and the rotating brush assembly, the anti-clogging filter (4) ensures that the flue gas passes through smoothly and achieves stable sampling and monitoring of the flue gas. The entire process is precisely controlled by the controller (3), which automatically adjusts the blowing pressure of the soot blowing assembly and the rotation speed of the rotating brush assembly according to the clogging status of the anti-clogging filter (4).

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