A device for carbon emission spot-checking in power plants

Abstract

The application discloses a carbon emission sampling and detecting device in a power plant, and belongs to the field of gas sampling, detecting and analyzing. A pipeline penetrating through a chimney is arranged on the sampling device. Flue gas sequentially passes through a treatment device for cooling and dust removal along the pipeline, is detected by a detecting device, and is discharged. The sampling device comprises a flow channel. A first filter screen is arranged in the flow channel. A fan blade is arranged below the first filter screen. When the fan blade rotates, the ash on the first filter screen is sucked out and discharged into the chimney. When the upper switch assembly is closed, the flue gas is introduced. When the upper and lower switch assemblies are both closed and the fan blade rotates, the ash on the first filter screen can be cleaned. Under the rotation of the fan blade, the cleaned ash is discharged from the outside of the outlet in the side wall of the flow channel. When the fan blade rotates, part of the ash accumulated in the pipeline can be reversely sucked into the flow channel.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of gas sampling, detection and analysis, and particularly relates to a carbon emission sampling and testing device for use in a power plant. BACKGROUND

[0002] Global climate governance occupies an important position, and in order to effectively respond to global warming, more and more cities have included the problem of peaking of carbon emissions into the consideration category.

[0003] At present, the main source of carbon emissions is the combustion of fossil fuels, such as thermal power generation and automobile emissions, although clean energy such as wind and solar energy has been used, but the current energy structure is still dominated by thermal power generation, and thermal power plants are important control points of carbon emissions.

[0004] Taking a thermal power plant of a coal-fired unit type as an example, the main components of flue gas of a coal-fired boiler are N2, O2, particulate matter, CO2, SO2, nitrogen oxides (NO x ), water vapor and a small amount of CO, SO3, H2, CH4 and other hydrocarbon compounds, and the composition of flue gas is complex. When the carbon emissions of a coal-fired unit in a thermal power plant are calculated, sampling and testing are often used, but when flue gas is sampled and tested, the content of soot in the flue gas is large, the filter screen is easy to be blocked, the filter screen needs to be cleaned frequently, and when the soot is cleaned, the soot is not easy to be discharged due to the airflow blowing of the chimney, so that the soot is easy to be accumulated on the filter screen again. If the filter screen is not cleaned frequently, the content of carbon dioxide in the sampling and testing is reduced, which affects the authenticity of the measurement value, and in addition, if the soot is not effectively cleaned and enters the detection equipment, some of the soot will be deposited in the equipment, which affects the accuracy of the detection equipment and reduces the service life of the equipment. SUMMARY

[0005] The purpose of the present application is to solve the above problems, and to provide a carbon emission sampling and testing device for use in a power plant, which can filter and clean soot and take out the soot on the filter screen to maintain the filtering efficiency of the filter screen.

[0006] To achieve the above purpose, the technical scheme adopted by the present application is as follows: a carbon emission sampling and testing device for use in a power plant, comprising a sampling device arranged in a chimney, a pipeline passing through the chimney is arranged on the sampling device, flue gas passes through a treatment device in sequence for cooling and dust removal along the pipeline, and is discharged after being detected by a detection device;

[0007] The sampling device comprises a flow channel, a first filter screen is arranged in the flow channel, and a fan blade is arranged below the first filter screen, the fan blade rotates to suck out the soot on the first filter screen and discharge the soot into the chimney;

[0008] The processing device includes a cooling component and a dust removal component that are interconnected. The dust removal component includes a housing, and an adsorption component for adsorbing flue gas is movably disposed inside the housing.

[0009] As a further improvement to the above technical solution, the upper and lower ends of the flow channel are provided with switch components, and the lower sidewall of the flow channel is provided with several outlets.

[0010] A cleaning component that can contact the first filter screen is connected to the rotating shaft of the fan blade. When the switch components at the upper and lower ends are closed, the dust is discharged from the outlet when the fan blade rotates.

[0011] As a further improvement to the above technical solution, the switch assembly located at the lower end of the flow channel includes a plurality of movable plates rotatably disposed on the side wall of the flow channel, one end of each movable plate passing through the side wall of the flow channel.

[0012] The flow channel end is rotatably fitted with a rotating sleeve on the outer side, and the rotating sleeve is provided with several through holes that can communicate with the outlet; and the bottom surface of the rotating sleeve is in contact with and engaged with the rotating shaft of the movable plate.

[0013] The rotating sleeve rotates synchronously, driving the movable plate to move and opening the bottom inlet of the flow channel. However, the bottom of the flow channel and the outlet cannot open synchronously.

[0014] As a further improvement to the above technical solution, the cleaning assembly includes a rotating rod fixedly mounted on the fan blade rotation shaft, and a cleaning brush that can contact the first filter screen is provided on the rotating rod.

[0015] As a further improvement to the above technical solution, a cleaning channel is provided on the upper and lower sides of the box, and gas flows from top to bottom in the cleaning channel. When the gas blows through the adsorption component, it blows the adsorbed dust downwards and discharges it.

[0016] Control valves are provided at both the air inlet and outlet of the cleaning channel, and a switch valve is provided at the outlet of the pipe connected to the box. A drive component is also provided on the cleaning channel to drive the position change of the adsorption component.

[0017] As a further improvement to the above technical solution, the cleaning channels are symmetrically arranged on both sides of the pipe;

[0018] The adsorption assembly includes a frame that is slidably disposed inside the box, and a plurality of electrode plates are fixedly disposed inside the frame;

[0019] The inner wall of the housing is provided with conductive sheets that are in contact with the electrode plate and conduct electricity; and when the electrode plate and the cleaning channel are in the same vertical direction, the electrode plate and the conductive sheets are disconnected and the power is cut off.

[0020] As a further improvement to the above technical solution, the drive assembly includes a rack fixedly mounted on the frame, the rack having a notch in the middle, a motor fixedly mounted on the housing, and a gear meshing with the rack connected to the motor shaft;

[0021] Both ends of the housing are also provided with pushers to move the frame so that the gear meshes with the rack.

[0022] As a further improvement to the above technical solution, the cooling assembly includes a plurality of heat-conducting components extending into the pipe; a cleaning assembly for cleaning the surface of the heat-conducting components is provided inside the pipe;

[0023] The cleaning component includes several scrapers on both sides of the heat-conducting component. Grooves are provided on both sides of the heat-conducting component to facilitate the adhesion of dust and other impurities. The scrapers are in contact with the heat transfer component, and the contact surfaces are coupled to each other with the grooves.

[0024] When the scraper scrapes the heat-conducting component up and down, the adsorption assembly is located in the middle of the box, and the inlet control valve of the switch valve and the cleaning channel is closed, while the outlet control valve is open, and the flue gas is discharged through the outlet.

[0025] As a further improvement to the above technical solution, the pipe connected to the cooling component has a three-way structure, one end of which is connected to the flow channel, and the other end is on the same vertical line as the end connected to the cooling component.

[0026] The cleaning assembly also includes a movable rod connected to a plurality of the scrapers, and the bottom end of the tee structure of the pipe is provided with a drive source for driving the movable rod to move up and down.

[0027] As a further improvement to the above technical solution, a filter device is connected to the pipe connected to the flow channel. The filter device includes a switching disk rotatably disposed between the filter and the pipe. The switching disk is provided with a plurality of cavities that can communicate with each other with the pipe. A second filter screen is placed in the cavity. A second driving source is connected to the switching disk to drive it to rotate so as to switch different second filter screens.

[0028] One of the cavities has a fan on one side to blow dust off the second filter screen, and a collection pipe on the other side.

[0029] The beneficial effects of this invention are:

[0030] 1. This invention provides a carbon emission sampling device for power plants. By setting switch components at the upper and lower ends of the flow channel, when the switch components at both ends are opened simultaneously, flue gas can be smoothly passed upwards. When the upper switch component is closed, flue gas is introduced. When both the upper and lower switches are closed and the fan blades rotate, the dust on the first filter screen can be cleaned. Under the rotation of the fan blades, the cleaned dust is discharged outwards from the outlet on the side wall of the flow channel. When the fan blades rotate, some of the dust accumulated in the pipe can be drawn back into the flow channel. When the upper and lower switch components are opened, the drawn-in dust is blown upwards through the flow channel by the flue gas flow and discharged.

[0031] 2. Multiple filtration processes are set up to effectively remove dust from the sampled flue gas. Each filtration process can automatically remove the filtered soot, ensuring normal flue gas flow while maintaining a low level of soot. By setting up adsorption components, the adsorbed soot can be carried out in reverse by the incoming gas. The two stations can switch between each other without affecting the normal dust removal process. Moreover, during the gas flow, the flue gas inside the chamber can be further cooled, so that the temperature of the flue gas entering the testing equipment can be further reduced, protecting the testing equipment.

[0032] 3. By controlling the up-and-down movement of the scraper, the scraper can sweep and clean the heat-conducting component, removing dust and some crystals condensed on it, ensuring the heat conductivity of the component. The grooves on the heat-conducting component increase the contact area between the component and the flue gas, resulting in a better cooling effect. The grooves also provide a good adhesion surface for soot and crystals, enabling effective capture of soot and crystals. During cleaning, the grooves guide the scraper, making it easier to remove soot and crystals.

[0033] 4. When cleaning the heat-conducting components, high-temperature liquid can be introduced into the cooling components to reduce condensation and eliminate their cooling effect. The heat-conducting components heat up under the influence of flue gas, making them easier to clean. During cleaning, the switch valve should be closed, the inlet control valve of the cleaning channel should be closed, and the outlet control valve should be open. The adsorption component should be placed in the middle of the housing. Therefore, the flue gas entering the cooling and dust removal components will be discharged through the outlet of the cleaning channel, preventing it from directly entering the testing equipment and protecting it. When the inlet and outlet control valves of the cleaning channel are open, gas can be introduced into the cooling components, allowing for reverse air blowing within the cooling components and pipes, which can blow dust out in the opposite direction. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0035] Figure 2 This is a schematic diagram of the sampling device.

[0036] Figure 3 This is a schematic diagram of the dust removal component.

[0037] Figure 4 This is a schematic diagram of the cooling component.

[0038] Figure 5 for Figure 1 A magnified schematic diagram of the local structure at point A;

[0039] Figure 6 for Figure 1 A magnified view of the structure at point B in the middle;

[0040] Figure 7 for Figure 2 A magnified schematic diagram of the local structure at point C;

[0041] Figure 8 for Figure 2 A magnified schematic diagram of the local structure at point D;

[0042] Figure 9 for Figure 2 Schematic diagram of the structure in the E direction;

[0043] Figure 10 for Figure 2 Schematic diagram of the cross-sectional structure in the FF direction;

[0044] Figure 11 for Figure 2 Schematic diagram of the cross-sectional structure in the middle GG direction;

[0045] Figure 12 This is a schematic diagram of the external structure of the dust removal component;

[0046] Figure 13 for Figure 12 Schematic diagram of partial cross-section;

[0047] Figure 14 This is a schematic diagram of the working state of the dust removal assembly when the adsorption component is placed in the middle and exhausts gas outwards.

[0048] Figure 15 This is a schematic diagram of the working state of the dust removal assembly when the adsorption component is placed in the middle and air is blown into the pipe in reverse.

[0049] Figure 16 This is a schematic diagram showing the installation arrangement between the adsorption component and the gear.

[0050] Figure 17 for Figure 4 Cross-sectional view along the HH direction;

[0051] Figure 18 for Figure 4 A magnified schematic diagram of the local structure at point I;

[0052] Figure 19 for Figure 5 Cross-sectional view along the JJ direction;

[0053] Figure 20 for Figure 17 A magnified schematic diagram of the local structure at point K;

[0054] Figure 21 for Figure 2 A magnified schematic diagram of the structure at point L in the middle.

[0055] The text labels in the diagram represent: 10, sampling device; 101, flow channel; 102, first filter screen; 103, fan blade; 104, second filter screen; 105, rotating sleeve; 106, movable plate; 107, rotating rod; 108, cleaning brush; 109, support bar; 110, pressure rod; 111, support rod; 112, cover plate; 113, connecting rod; 20, processing device; 201, cooling assembly; 2011, heat-conducting component; 20110, groove; 2012, heat transfer component; 2013, scraper; 2014, movable rod; 202. Dust removal component; 2020. Housing; 20201. Conductive sheet; 2021. Adsorption component; 20210. Frame; 20211. Electrode plate; 20212. Rack; 20213. Notch; 20214. Pushing component; 2022. Cleaning channel; 30. Detection device; 40. Pipeline; 41. Switch valve; 42. Filter device; 43. Switching disc; 44. Fan; 45. Collection pipe; 46. Cavity; 47. Dust collection pipe. Detailed Implementation

[0056] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0057] As per the instruction manual Figures 1-21As shown in the figure, as a specific embodiment of the present invention, the specific structure of the present invention is as follows: a carbon emission sampling device for power plants, including a sampling device 10 installed in the chimney, the sampling device 10 including a flow channel 101, the flow channel 101 being assembled from three parts: upper, middle and lower, the sampling device 10 being provided with a pipe 40 passing through the chimney, the pipe 40 being connected to and interconnected with the middle part of the flow channel 101, the flue gas passing through the pipe 40 sequentially through the treatment device 20 for cooling and dust removal, and being discharged after being detected by the detection device 30, the detection device 30 using infrared absorption method for measurement, the measuring instruments inside the detection device 30 being existing instruments, which will not be described here, the final measured data being sent to the PLC and flue gas monitoring system for calculation and statistics, the calculation method and formula for carbon dioxide emissions are already existing technology, and will not be described here.

[0058] A first filter screen 102 is provided inside the flow channel 101. The first filter screen 102 is detachably installed inside the lower flow channel 101 and is formed by splicing two parts, as shown in the attached instruction manual. Figure 2 , 10 As shown in Figure 11, several support bars 109 are arranged in the flow channel 101. The first filter screen 102 is placed above the support bars 109. A pressure bar 110 is also arranged in the flow channel 101, which presses the first filter screen 102 onto the support bars 109. A fan blade 103 is also arranged on the flow channel 101 below the first filter screen 102. The fan blade 103 and the support bars 109 rotate relative to each other. The support bars 109 support the fan blade 103. A drive motor is connected to the fan blade 103. The motor is located outside the chimney. The output shaft of the motor passes through the chimney and the flow channel 101 and is connected to the rotation shaft of the fan blade 103. When the fan blade 103 rotates, it drives the airflow in the flow channel 101 to move downward, sucking out the soot on the first filter screen 102 and discharging it into the chimney, thus cleaning the first filter screen 102.

[0059] The processing device 20 includes a cooling component 201 and a dust removal component 202 that are interconnected. Specifically, the cooling component 201 and the dust removal component 202 are connected by a pipe 40. The cooling component 201 includes a heat transfer element 2012, which is a commonly used liquid cooling device. It includes a coolant flow pipe that can be wrapped around the outside of the pipe 40, and insulation material that wraps the flow pipe. Please refer to the attached instruction manual. Figure 4 , 17 As shown, introducing different liquids into the flow pipe can lower the temperature of the flue gas in the pipe 40, thus achieving a cooling effect.

[0060] The dust removal component 202 includes a housing 2020, in which an adsorption component 2021 for adsorbing flue gas is movably disposed. After the cooled flue gas is discharged from the cooling component 201, it enters the adsorption component 2021 for further adsorption, which can further remove particulate matter and protect the subsequent detection device, making the detection data more accurate.

[0061] As per the instruction manual Figure 2 , 7 As shown in Figures 8, 9, and 10, further optimizations are made based on the above embodiments: switch assemblies are provided at the upper and lower ends of the flow channel 101, that is, they are respectively provided in the upper and lower parts of the flow channel 101; a plurality of outlets are provided on the lower side wall of the flow channel 101, and the outlets are provided on the lower part of the flow channel 101.

[0062] A cleaning assembly that can contact the first filter screen 102 is connected to the rotating shaft of the fan blade 103. The cleaning assembly includes a rotating rod 107 fixedly mounted on the rotating shaft of the fan blade 103. The rotating rod 107 is symmetrically arranged on the rotating shaft of the fan blade 103. A cleaning brush 108 that can contact the first filter screen 102 is provided on the rotating rod 107 (see attached figure). Figure 8 When the fan blade 103 rotates, it will simultaneously drive the rotating rod 107 and the cleaning brush 108 to rotate, thereby cleaning the dust filtered on the first filter screen 102.

[0063] The switch assembly located at the lower end of the flow channel 101 includes a plurality of movable plates 106 rotatably disposed on the side wall of the flow channel 101. The movable plates 106 are arranged along the diametrical direction of the flow channel 101. One end of each movable plate 106 passes through the side wall of the flow channel 101, and the other end is rotatably connected to a support base at the bottom of the rotating shaft of the fan blade 103. A support rod 111 fixed to the support base and the flow channel 101 is also provided (see attached figure). Figure 9 When all the movable pieces 106 are laid horizontally, the inlet of the flow channel 101 is closed; when all the movable pieces 106 are arranged vertically, the inlet is opened.

[0064] A rotating sleeve 105 is rotatably mounted on the outer side of the lower end of the flow channel 101. The rotating sleeve 105 has several through holes that can communicate with the outlet. The bottom surface of the rotating sleeve 105 is in contact with and engaged with the rotating shaft of the movable piece 106 (see attached figure). Figure 7When the rotating sleeve 105 rotates, it synchronously drives the movable piece 106 to move. The rotation control of the rotating sleeve 105 can be controlled by adding other drive mechanisms such as handwheels or drive motors, which is a conventional control method. It is not shown in this embodiment. The bottom inlet of the flow channel 101 is opened, and the bottom inlet of the flow channel 101 and the outlet on the side wall of the flow channel 101 cannot be opened synchronously. That is, when the movable piece 106 is controlled to open the bottom inlet of the flow channel 101, it means that air is being introduced. At this time, the rotating sleeve 105 closes the outlet on the side wall of the flow channel 101. When the rotating sleeve 105 is rotated so that the through hole on the rotating sleeve 105 and the outlet on the flow channel 101 are connected to each other, the rotation of the rotating sleeve 105 drives the movable piece 106 to rotate and close the bottom inlet of the flow channel 101, thereby closing the bottom inlet of the flow channel 101.

[0065] The switching assembly at the top of the flow channel 101 is a flip-up cover plate 112, which is connected to each other by a connecting rod 113 to form a parallelogram structure (see attached). Figure 21 The opening and closing of the cover plate 112 can be controlled by adding a cylinder or other driving element to the chimney, which is a conventional control method and is not shown in this embodiment. During the rotation of the fan blade 103, after the switch components at the upper and lower ends are closed, the flue gas in the flow channel 101 and pipe 40 is drawn downward. During the rotation of the fan blade 103, the rotating rod 107 and cleaning brush 108 are driven to clean the dust on the first filter screen 102. The cleaned dust is discharged downward with the airflow through the outlets on both sides of the flow channel 101, which can reduce the impact of the airflow in the chimney on the soot.

[0066] When the upper and lower switch components are turned on, the dust drawn above the first filter screen 102 can be directly discharged through the flow channel 101 under the blowing of the flue gas.

[0067] As per the instruction manual Figure 3 , 12 As shown in 13, 14, 15, and 16, the above embodiments are further optimized as follows: the upper and lower sides of the housing 2020 are connected by cleaning channels 2022, and the cleaning channels 2022 are symmetrically arranged on both sides of the pipe 40. Specifically, the cleaning channels 2022 are filled with gas flowing from top to bottom. When the gas blows through the adsorption component 2021, it blows the adsorbed dust downwards and discharges it.

[0068] Both the air inlet and outlet of the cleaning channel 2022 are equipped with control valves, which are electromagnetic control valves as shown. A switch valve 41 is installed at the outlet of the pipe 40 communicating with the housing 2020. The cleaning channel 2022 is also equipped with a drive component that drives the position change of the adsorption component 2021 (see attached diagram). Figure 3 ).

[0069] The adsorption assembly 2021 includes a frame 20210 slidably disposed inside the housing 2020. Several sets of electrode plates 20211 are fixedly disposed within the frame 20210. In this embodiment, two sets of electrode plates 20211 are provided. Conductive sheets 20201 (see attached diagram) are disposed on the inner wall of the housing 2020, each in contact with and conducting electricity to the electrode plates 20211. Figure 13 When the electrode plate 20211 and the cleaning channel 2022 are in the same vertical direction, the electrode plate 20211 and the conductive sheet 20201 are disconnected from the power supply. That is, after the frame 20210 slides to one end in the box 2020, a set of electrode plates 20211 and conductive sheets 20201 near the end of the box 2020 can be disconnected from the power supply and located in the ventilation position of the cleaning channel 2022. During the ventilation process, the electric field loses its adsorption force on the dust, and the adsorbed dust is blown away and carried out by the blowing of the gas. The other set can move to the air intake position in the same vertical direction as the pipe 40 to continue to treat the flue gas for dust suppression.

[0070] The drive assembly includes a rack 20212 fixedly mounted on the frame 20210. The rack 20212 is located on the front side of the frame 20210. The rack 20212 has a notch 20213 in the middle, which divides the rack 20212 into two parts. A motor is fixedly mounted on the housing 2020, and a gear (see attached diagram) that meshes with the rack 20212 is connected to the motor shaft. Figure 16 When the motor starts, it drives the gears to rotate, which in turn drives the frame 20210 to the middle position, thereby moving the frame 20210 to the middle position of the housing 2020. The state at this point can be seen in the attached diagram. Figure 14 As shown in Figure 15;

[0071] Both ends of the housing 2020 are also provided with pushers 20214 to move the frame 20210 so that the gear meshes with the rack 20212. Specifically, the pusher 20214 is an electromagnet, and a permanent magnet is fixedly set on the frame 20210. After the electromagnet is energized, it can drive the permanent magnet on the frame 20210 and the frame 20210 to move together, so that the frame 20210 can pass the middle position, thereby making the gear and rack 20212 mesh with each other, ensuring that the gear continues to drive the frame 20210 to move when it rotates.

[0072] As per the instruction manual Figure 4 , 6As shown in Figures 17, 18, and 20, further optimizations are made based on the above embodiments: the cooling assembly 201 includes several heat-conducting elements 2011 extending into the pipe 40. The heat-conducting elements 2011 are plate-shaped and several pieces are symmetrically arranged in the center. This arrangement can reduce obstruction of the flue gas flow rate and facilitate the normal flow of flue gas. A cleaning assembly for cleaning the surface of the heat-conducting elements 2011 is provided in the pipe 40. The cleaning assembly is mainly provided because during cooling, the flue gas temperature drops rapidly. Some gaseous substances will condense into solids on the condensing fins after the temperature drops rapidly. Therefore, a lot of dust and easily condensable oxides will condense into lumps on the heat-conducting elements 2011. Over time, this will affect the entry of flue gas and the cooling and condensation effect.

[0073] The cleaning assembly includes several scrapers 2013 on both sides of the heat-conducting element 2011. Grooves 20110 are provided on both sides of the heat-conducting element 2011 to facilitate the adhesion of dust and other impurities. The scrapers 2013 contact the heat transfer element 2012, and the contact surfaces are coupled with the grooves 20110. The grooves 20110 facilitate the adhesion of substances and increase the contact area with the flue gas, thereby improving the cooling effect. During the cleaning process of the scrapers 2013, the assembly guides the up-and-down movement of the scrapers 2013, making the cleaning process more convenient (see attached drawing processing device 20).

[0074] Since the scraper 2013 needs to heat the heat-conducting component 2011 when cleaning it by scraping it up and down, so that the condensed material can easily detach, the coolant flow into the heat transfer component 2012 can be stopped, and the temperature can be raised by the heating effect of the flue gas. In order to prevent the flue gas from directly entering the detection device, the adsorption component 2021 needs to be controlled to be located in the middle of the box 2020, and the control valve 41 and the air inlet control valve of the cleaning channel 2022 need to be closed, while the air outlet control valve needs to be opened, so that the flue gas can be discharged through the air outlet of the cleaning channel 2022. See the attached document for details. Figure 14 As shown in the image.

[0075] The pipe 40 connected to the cooling assembly 201 has a three-way structure, one end of which is connected to the flow channel 101, and the other end is on the same vertical line as the end connected to the cooling assembly 201.

[0076] The cleaning assembly also includes a movable rod 2014 connected to several scrapers 2013. The bottom end of the three-way structure of the pipe 40 is provided with a drive source for driving the movable rod 2014 up and down. In this embodiment, the drive source is a motor, and a gear is connected to the output shaft of the motor. The gear and the movable rod 2014 are driven by a rack and pinion mechanism. A dust collection pipe 47 for collecting soot is also provided on one side of the pipe 40. Dust or solid condensate scraped from the heat-conducting component 2011 settles and falls through the dust collection pipe 47 and is discharged (see attached diagram). Figure 6 On the other hand, the control valve at the air inlet of the cleaning channel 2022 can be opened, while the control valves at the air outlets of the switching valve 41 and the heat-conducting component 2011 are closed. The adsorption assembly 2021 is then moved to the middle position of the housing 2020. At this point, the gas introduced into the cleaning channel 2022 can be reversed and enter the pipe 40, blowing out the dust and condensate in the cooling assembly 201 in the opposite direction (see attached diagram). Figure 15 When reverse gas is introduced, it is only allowed when no flue gas has been introduced into the pipe 40, or just after the introduction of flue gas has stopped, in order to prevent mutual obstruction between the gas and the flue gas during the introduction.

[0077] As per the instruction manual Figure 1 , 5 As shown in Figure 19, a further optimization is made based on the above embodiment: a filter device 42 is connected to the pipe 40 connected to the flow channel 101. The filter device 42 includes a switching disk 43 rotatably disposed between the pipe 40 and the pipe 40. The pipe 40 is provided with a shell that can accommodate the switching disk 43. The switching disk 43 is provided with a plurality of cavities 46 that can communicate with each other with the pipe 40. A second filter screen 104 is placed in each cavity 46. There are 3 cavities 46, only one of which is interconnected with the pipe 40. A second drive source is connected to the switching disk 43 to drive it to rotate and switch different second filter screens 104. The second drive source is a motor. A gear is connected to the output shaft of the motor. Gears meshing with each other are provided on the outer edge of the cavity 46. When the motor is started, it can control the switching of different cavities 46, thereby replacing different second filter screens 104 for filtration.

[0078] One of the cavities 46 has a fan 44 on one side to blow out the dust on the second filter screen 104, and a collection pipe 45 on the other side. The fan 44 and the collection pipe 45 are respectively fixed on the outer shell of the switching disk 43. By starting the fan 44, the dust filtered on the second filter screen 104 can be reversed and discharged into the collection pipe 45, which plays a cleaning role.

[0079] The specific usage of the present invention is as follows: When the flue gas is being sampled and tested normally, the switch assembly below the flow channel 101 is first opened and the switch assembly above is closed. The flue gas passes through the first filter screen 102 and the second filter screen 104 and enters the pipe 40. It is cooled down by the cooling component 201 and enters the box 2020 for further dust reduction. Then it enters the detection device 30 for detection.

[0080] When there is too much dust on the electrode plate 20211, the adsorption component 2021 is driven by the drive component to move to one side of the box 2020. Another set of electrode plates 20211 enters the position where the flue gas passes to continue the dust reduction treatment. The cleaning channel 2022 vents into the box 2020, which can blow off the dust adsorbed on the electrode plate 20211 and discharge it to the outside.

[0081] When it is necessary to clean the deposits on the heat-conducting component 2011, first close the switch valve 41, close the control valve at the inlet end of the cleaning channel 2022, open the control valve at the outlet end, and control the drive component to move the adsorption component 2021 to the middle position of the box 2020, stop the flow of coolant into the heat transfer component 2012, and the temperature of the heat-conducting component 2011 rises under the action of flue gas, and the flue gas enters the box 2020 and is discharged through the outlet of the cleaning channel 2022; then control the motor connected to the movable rod 2014 to start, which can drive the movable rod 2014 to move up and down. During the up and down movement of the movable rod 2014, it can drive the scraper 2013 to clean the heat-conducting component 2011, and scrape the impurities and deposits on the heat-conducting component 2011 downwards.

[0082] When the detection of flue gas is stopped, the switch components at the upper and lower ends of the control channel 101 are first turned off, and then the drive motor connected to the fan blade 103 is started. The motor drives the fan blade 103 to rotate, and simultaneously drives the rotating rod 107 and the cleaning brush 108 to rotate, which can clean the dust on the first filter screen 102. Driven by the fan blade 103, the dust is discharged into the chimney through the outlet on the side of the channel 101.

[0083] Furthermore, when the detection stops, the inlet control valve of the cleaning channel 2022 is opened and the outlet control valve is closed. The switch valve 41 is closed, and the adsorption component 2021 moves to the middle position of the box 2020. Gas can be injected into the pipe 40 in reverse, so that the dust and other deposits that have been cleaned on the heat-conducting component 2011 in the pipe 40 can be discharged outward through the dust collection pipe 47 connected to the pipe 40. The dust on the second filter screen 104 will flow back into the flow channel 101. When the switch components on the upper and lower sides of the flow channel 101 are opened, the dust will be carried outward by the action of the flue gas flow upward through the flow channel 101.

[0084] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0085] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A carbon emission sampling device for use in power plants, comprising a sampling device (10) installed inside a chimney, characterized in that: The sampling device (10) is equipped with a pipe (40) that passes through the chimney. The flue gas passes through the treatment device (20) in sequence along the pipe (40) for cooling and dust removal, and is discharged after being detected by the detection device (30). The sampling device (10) includes a flow channel (101), a first filter screen (102) is provided in the flow channel (101), and a fan blade (103) is provided below the first filter screen (102). When the fan blade (103) rotates, it sucks out the soot on the first filter screen (102) and discharges it into the chimney. The processing device (20) includes a cooling component (201) and a dust removal component (202) that are interconnected. The cooling component (201) includes a heat transfer element (2012). The dust removal component (202) includes a housing (2020). An adsorption component (2021) for adsorbing flue gas is movably disposed inside the housing (2020). The adsorption component (2021) includes a frame (20210) that is slidably disposed inside the housing (2020). Several sets of electrode plates (20211) are fixedly disposed inside the frame (20210). The upper and lower sides of the housing (2020) are connected by cleaning channels (2022), and gas flows from top to bottom in the cleaning channels (2022). When the gas blows through the adsorption component (2021), it blows the adsorbed dust downwards and discharges it. The cleaning channel (2022) is equipped with control valves at both the air inlet and outlet. A switch valve (41) is installed at the outlet of the pipe (40) that connects to the box (2020). The cleaning channel (2022) is also equipped with a drive component that drives the position of the adsorption component (2021) to change. The drive assembly includes a rack (20212) fixedly mounted on the frame (20210), the rack (20212) having a notch (20213) in the middle, a motor fixedly mounted on the housing (2020), and a gear meshing with the rack (20212) connected to the motor shaft; The two ends of the housing (2020) are also provided with pushers (20214) to push the frame (20210) to move so that the gear meshes with the rack (20212).

2. The carbon emission sampling device for power plants according to claim 1, characterized in that: Switching assemblies are provided at the upper and lower ends of the flow channel (101), and several outlets are provided on the lower side wall of the flow channel (101). A cleaning component that can contact the first filter screen (102) is connected to the rotating shaft of the fan blade (103). When the switch components at the upper and lower ends are closed, the dust is discharged from the outlet when the fan blade (103) rotates.

3. The carbon emission sampling device for power plants according to claim 2, characterized in that: The switch assembly located at the lower end of the flow channel (101) includes a plurality of movable pieces (106) rotatably disposed on the side wall of the flow channel (101), one end of the movable pieces (106) passing through the side wall of the flow channel (101); The flow channel (101) has a rotating sleeve (105) rotatably mounted on its outer side at its end. The rotating sleeve (105) has several through holes that can communicate with the outlet. The bottom surface of the rotating sleeve (105) is in contact with the rotating shaft of the movable piece (106). The rotating sleeve (105) rotates synchronously, driving the movable piece (106) to move, opening the bottom inlet of the flow channel (101), and the bottom of the flow channel (101) and the outlet cannot open synchronously.

4. A carbon emission sampling device for power plants according to claim 2, characterized in that: The cleaning assembly includes a rotating rod (107) fixedly mounted on the rotating shaft of the fan blade (103), and a cleaning brush (108) that can contact the first filter screen (102) is provided on the rotating rod (107).

5. A carbon emission sampling device for power plants according to claim 1, characterized in that: The cleaning channels (2022) are symmetrically arranged on both sides of the pipe (40); The inner wall of the housing (2020) is provided with conductive sheets (20201) that are in contact with the electrode plate (20211) and conduct electricity; and when the electrode plate (20211) and the cleaning channel (2022) are in the same vertical direction, the electrode plate (20211) and the conductive sheet (20201) are disconnected from each other and the power is cut off.

6. A carbon emission sampling device for power plants according to claim 5, characterized in that: The cooling assembly (201) includes a plurality of heat-conducting elements (2011) extending into the pipe (40); a cleaning assembly for cleaning the surface of the heat-conducting elements (2011) is provided in the pipe (40); The cleaning assembly includes a plurality of scrapers (2013) on both sides of the heat-conducting component (2011). Grooves (20110) are provided on both sides of the heat-conducting component (2011) to facilitate the adhesion of dust and impurities. The scrapers (2013) contact the heat transfer component (2012), and the contact surfaces are coupled to each other with the grooves (20110). When the scraper (2013) scrapes the heat-conducting component (2011) up and down, the adsorption component (2021) is located in the middle of the box (2020), and the inlet control valve of the switch valve (41) and the cleaning channel (2022) is closed, the outlet control valve is opened, and the flue gas is discharged through the outlet.

7. A carbon emission sampling device for power plants according to claim 6, characterized in that: The pipe (40) connected to the cooling assembly (201) has a three-way structure, one end of which is connected to the flow channel (101), and the other end is on the same vertical line as the end connected to the cooling assembly (201). The cleaning assembly also includes a movable rod (2014) connected to a plurality of the scrapers (2013), and the bottom end of the tee structure of the pipe (40) is provided with a drive source for driving the movable rod (2014) to move up and down.

8. A carbon emission sampling device for power plants according to claim 1, characterized in that: A filter device (42) is connected to the pipe (40) connected to the flow channel (101). The filter device (42) includes a switching disk (43) rotatably disposed between the pipe (40). The switching disk (43) is provided with a plurality of cavities (46) that can communicate with each other between the pipe (40). A second filter screen (104) is placed in the cavity (46). A second drive source is connected to the switching disk (43) to drive it to rotate in order to switch different second filters (104). One of the cavities (46) has a fan (44) on one side to blow out the dust on the second filter screen (104), and a collection pipe (45) on the other side.

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