An on-line monitoring device for carbon content of fly ash from a coal-fired boiler

Abstract

The present application belongs to the technical field of power plant thermal engineering, and particularly relates to a coal-fired boiler fly ash carbon content online monitoring device. Fly ash samples are taken at four points of the flue cross section. After the samples are taken, color information is collected by an imaging device, compared with historical sample imaging in a memory, and analyzed for carbon content change trends in the fly ash. The samples are then crushed by a hydraulic device, separated by a centrifuge, weighed and calculated to obtain accurate fly ash carbon content values. The multi-point sampling method effectively ensures the objectivity and accuracy of the samples. The imaging device can store and analyze sample color changes and intuitively reflect fly ash carbon content change trends. The centrifugal separation device separates the crushed samples, effectively separates different components, more accurately extracts the carbon-containing part, and performs weighing and calculation.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of power plant thermal energy engineering, and particularly relates to a coal-fired boiler fly ash carbon content online monitoring device. BACKGROUND

[0002] The boiler fly ash carbon content is an important index reflecting the combustion efficiency of the coal-fired boiler of the thermal power plant, and real-time detection of the fly ash carbon content will be beneficial to guiding the correct adjustment of the air-coal ratio and improving the boiler combustion control level; reasonable control of the fly ash carbon content index will be beneficial to reducing the power generation cost and improving the economy of the unit operation.

[0003] With the continuous development of the power generation units in China towards large capacity and high parameters, it is increasingly important and urgent to realize online detection of the carbon content in the boiler fly ash to control and optimize the boiler combustion, reduce the coal consumption for power generation, improve the "bidding for on-grid" capability and the comprehensive utilization capability of the pulverized coal ash. The traditional laboratory measurement method of the fly ash carbon content is the chemical ignition weight loss method, which is an offline laboratory analysis method. Although this method has the characteristics of high precision, it is affected by factors such as ash sample collection and analysis time lag, resulting in that the measurement results cannot timely and accurately reflect the current combustion conditions of the boiler, and the guidance for the real-time adjustment of the boiler combustion control lacks real-time performance. SUMMARY

[0004] The present application aims to provide a coal-fired boiler fly ash carbon content online monitoring device to solve the technical problems that the traditional monitoring equipment cannot realize real-time detection and the measurement results are inaccurate.

[0005] To solve the above technical problems, the specific technical solutions of the present application are as follows:

[0006] In some embodiments of the present application, a coal-fired boiler fly ash carbon content online monitoring device is provided, comprising:

[0007] A flue is internally provided with a flow-through cavity;

[0008] A support component is a frame structure, which is arranged in the flow-through cavity and fixedly connected with the flue;

[0009] An air inlet component is arranged in the flow-through cavity of the flue in a matrix arrangement, which is arranged on the support component and fixedly connected with the support component;

[0010] The air inlet end of the air inlet component is opposite to the flow direction of the flue gas;

[0011] A negative pressure component is arranged on the air inlet component, and an air outlet component is further arranged thereon;

[0012] The air outlet component penetrates the flue and is arranged outside, and the inner diameter of the air outlet component is smaller than that of the air inlet component;

[0013] The shunt component is provided with a plurality of air inlet ends and air outlet ends, and the air inlet ends are connected with the air outlet component;

[0014] The color collection component is connected with the air outlet end of the shunt component;

[0015] The crushing component is connected with the air outlet end of the color collection component through a pipeline, and the air outlet end is provided with a collection component;

[0016] The negative pressure component forms a negative pressure area in the air inlet component, so that the flue gas at different positions in the flue enters the air inlet component and flows into the shunt component through the air outlet component, and after color analysis by the color collection component, the dust is crushed by the crushing component and collected by the collection component.

[0017] In some embodiments of the present application, the air inlet component is a pipeline structure, and an electromagnetic valve is further arranged thereon;

[0018] The air inlet component is arranged in the flow cavity of the flue in a mouth-shaped manner, and collects flue gas at different positions in the same plane.

[0019] In some embodiments of the present application, the color collection component is a combined structure, comprising:

[0020] The shell is internally provided with a cavity, and a plurality of air inlet ends and air outlet ends are arranged thereon;

[0021] The connecting pipe component penetrates the air inlet end of the shell and is connected with the air outlet end of the shunt component at one end, and penetrates the air outlet end of the shell and is connected with the air inlet end of the crushing component at the other end;

[0022] The connecting pipe component is made of transparent material;

[0023] The dust blowing component is arranged in the cavity, and is provided with an air outlet end, and the air inlet end is connected with a compressed air source outside;

[0024] The air blowing pipeline is connected with the connecting pipe component at one end and connected with the air outlet end of the dust blowing component at the other end;

[0025] The photoelectric coupler is arranged in the cavity, and is arranged at the air inlet end of the shell, and the photoelectric coupler is arranged symmetrically at both sides of the connecting pipe component;

[0026] The color difference measurement component is arranged on the connecting pipe component and below the photoelectric coupler.

[0027] In some embodiments of the present application, further comprising: a separation component for separating the dust in the collection component;

[0028] The separating component comprises:

[0029] a box, which is internally provided with a mounting cavity;

[0030] a driving component, which is arranged in the mounting cavity and has a rotating end penetrating through the box;

[0031] a rotating component, which is arranged on the rotating end of the driving component and is fixedly connected with the rotating end;

[0032] a support component, which is arranged on the rotating component and is fixedly connected with the rotating component, and is provided with a plurality of limiting grooves for placing the collecting component;

[0033] a cover component, which is sleeved on the support component and has a bottom in contact with the box;

[0034] a weighing component, which is arranged on the box and is fixedly connected with the box.

[0035] In some embodiments of the application, the control component is arranged on the box.

[0036] The control component comprises:

[0037] an execution module, which is electrically connected with the driving component, the electromagnetic valve, the negative pressure component, the crushing component, the photoelectric coupler and the color-difference component;

[0038] a detection module, which is electrically connected with the photoelectric coupler, the color-difference component and the weighing component;

[0039] a storage module, which stores historical fly ash imaging data and is electrically connected with the detection module to record the image information collected by the detection module;

[0040] a central processing module, which is electrically connected with the detection module, the execution module and the storage module, compares the detection image of the detection module with the historical fly ash imaging data in the storage module, and generates a carbon content change trend chart of fly ash;

[0041] a communication module, which is connected with the central processing module and an external terminal system, and transmits the data information detected and obtained by the central processing module to the external terminal system;

[0042] a time module, which is connected with the central processing module and provides time data for the central processing module;

[0043] A power module supplies power to the central processing module, the communication module, the detection module, the execution module and the time module.

[0044] In some embodiments of the present application, the monitoring method is as follows:

[0045] Step one: the flue gas flow at different positions in the same plane in the flue flow cavity is collected by the air inlet component, and is transmitted to the shunt component through the negative pressure component and the air outlet component;

[0046] Step two: the flue gas sulfur at each position entering the shunt component is transmitted to the color collection component, image collection is performed through the photoelectric coupler and the color difference component, and data is generated and transmitted to the detection module; the detection module transmits signals to the storage module and the central processing module; the central processing module compares the received image information with historical fly ash imaging data in the storage module to generate a corresponding fly ash carbon content change trend graph;

[0047] Step three: the flue gas flow flowing out of the color collection component is dusted by the crushing component, the collected dust is crushed, the corresponding dust is obtained, and the dust is collected by the collection component;

[0048] Step four: the collection component with the collected dust is placed on the separation component, dust separation operation is performed by rotating the driving component, the separated dust is poured into the weighing component, the weighing component weighs, and the obtained weight data is transmitted to the central processing module; the central processing module integrates data, updates the fly ash carbon content change trend graph, and obtains accurate fly ash carbon content numerical value;

[0049] Step five: the communication component transmits the updated fly ash carbon content change trend graph and the accurate fly ash carbon content numerical value in the central processing module to the external terminal system.

[0050] Compared with the prior art, the beneficial effects of the present application are that fly ash samples are taken at four points of the flue cross section, color information is collected by the imaging device after the samples are taken, color comparison is performed with historical sample imaging in the storage, the fly ash carbon content change trend is analyzed, the samples are crushed by the hydraulic device, separation is performed by the centrifuge, and accurate fly ash carbon content numerical value is obtained by weighing after separation. By adopting the multi-point sampling mode, the objectivity and accuracy of sampling can be effectively ensured; the imaging device can store and analyze sample color changes, and can directly reflect the fly ash carbon content change trend; the centrifugal separation device can effectively separate different components after crushing the samples, more accurately extract the carbon-containing part, and perform weighing calculation. BRIEF DESCRIPTION OF DRAWINGS

[0051] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments with reference made to the accompanying drawings. The drawings are for purposes of illustration only and are not intended to limit the present application thereto, as the present application can have application in environments beyond those shown or described. Like reference numerals are used to denote like parts throughout the various figures. In the drawings:

[0052] Figure 1 An overall internal structure schematic view is provided for the first embodiment of the present application;

[0053] Figure 2 A flue cross-sectional structure schematic view is provided for the first embodiment of the present application;

[0054] Figure 3 A separation component internal structure schematic view is provided for the first embodiment of the present application;

[0055] Figure 4 A separation component structure schematic view is provided for the first embodiment of the present application;

[0056] Figure 5 A color collection component internal structure schematic view is provided for the second embodiment of the present application. DETAILED DESCRIPTION

[0057] The specific embodiments of the present application will now be described in further detail with reference to the drawings and embodiments. The following embodiments are presented by way of illustration of the present application, and are not intended to limit the scope of the present application.

[0058] For better understanding of the purpose, structure and function of the present application, the present application will be described in further detail below with reference to the drawings.

[0059] Embodiment One

[0060] Referring to the drawings, according to the embodiments of the present application, there are provided: Figures 1-4 As shown in the drawings, according to the embodiments of the present application, there are provided:

[0061] A flue 1, the flue 1 is internally provided with a flow-through cavity 101;

[0062] A support component 102, the support component 102 is a frame structure, which is provided in the flow-through cavity 101, and is fixedly connected with the flue 1 (the fixed connection herein is that the support component 102 is mounted on the flue 1 through bolts, connecting members, etc., the positional relationship between the support component 102 and the flue 1 is constant, and the support component 102 can be disassembled), which specifically provides support for the air inlet component 2;

[0063] The air inlet component 2 is in a pipeline structure, and is arranged in the flow cavity 101 of the flue 1 in a matrix manner, specifically, the air inlet component 2 is arranged in the flow cavity 101 of the flue 1 in a mouth-shaped manner, collects flue gas at different positions in the same plane, is arranged on the support component 102, and is fixedly connected with the support component 102; the air inlet end of the air inlet component 2 is opposite to the flue gas flow direction, so that the flue gas flow in the flow cavity 101 can be better collected;

[0064] It should be noted that, in order to collect flue gas flow in a larger range, an arc-shaped cover can be additionally arranged on the air inlet end of the air inlet component 2, so that the flue gas flow can enter the air inlet component 2 more quickly and in a larger amount;

[0065] In order to facilitate closing and opening of the air inlet component 2, a control valve structure such as an electromagnetic valve can be additionally arranged on the air inlet component 2;

[0066] The negative pressure component 3 is a negative pressure pump, and the negative pressure component 3 is arranged on each air inlet component 2 and is further provided with an air outlet component 4, which is an air outlet pipe; the internal part of the air inlet component 2 forms a negative pressure area by opening the negative pressure component 3, so that the flue gas flow in the flow cavity 101 can enter the air inlet component 2 more quickly;

[0067] The air outlet component 4 penetrates the flue 1 and has an inner diameter smaller than that of the air inlet component 2; by making the diameter of the air outlet component 4 smaller than that of the air inlet component 2, the flue gas flow can be accelerated in the air outlet component 4, so that the flue gas flow can enter subsequent components more quickly;

[0068] The shunt component 5 is a switching component structure, which has a switching connection function, and is provided with a plurality of air inlet ends and air outlet ends, and the air inlet end is connected with the air outlet component 4; the shunt component 5 transmits the entering flue gas flow to the color collection component 6 for imaging data collection; the number of the air inlet end and the air outlet end of the shunt component 5 is consistent with the number of the air inlet component 2, so that the flue gas flow at each position of the flow cavity 101 in the same plane can be more accurately detected;

[0069] The color collection component 6, the air inlet end of the color collection component 6 is connected with the air outlet end of the shunt component 5 through a pipeline; it should be noted that the connecting pipeline between the air inlet end of the color collection component 6 and the air outlet end of the shunt component 5 is made of transparent material, preferably made of high-temperature-resistant glass; in order to facilitate data collection of the color collection component 6, the pipeline in the color collection component 6 is also made of transparent material;

[0070] The crushing component 7 is a hydraulic crushing device, and further provided with a dust collecting device, the crushing component 7 is connected with the air outlet end of the color collection component 6 through a pipeline, and the air outlet end is provided with a collecting component 8 which is in a tubular structure;

[0071] It should be noted that the dust collecting device filters the flue gas flow into the crushing component 7, intercepts the dust in the flue gas flow, and the intercepted dust is crushed by the crushing component 7, and finally collected and contained by the collecting component 8. Since the crushing component is a known technology in the art and is not the focus of the present application, it will not be described again;

[0072] The separating component 9 separates the dust in the collecting component 8.

[0073] The separating component 9 specifically comprises:

[0074] The box 901 is internally provided with a mounting cavity;

[0075] The driving component 902 is a stepper motor, which is arranged in the mounting cavity and has a rotating end penetrating through the box 901;

[0076] The rotating component 903 is a rotating disc, which is arranged on the rotating end of the driving component 902 and fixedly connected with the rotating end. The fixed connection is achieved by bolts, connecting members or the like, so that the rotating component 903 and the rotating end of the driving component 902 maintain a constant position, and the rotating component 903 rotates with the driving component 902;

[0077] The support component 904 is a double-layer plate structure, which is provided with a limiting hole 9041 and arranged on the rotating component 903 and fixedly connected with the rotating component 903. The fixed connection is achieved by bolts, connecting members or the like, so that the support component 904 and the rotating component 903 maintain a constant position, and the support component 904 rotates with the rotating component 903. The support component 904 is provided with a plurality of limiting grooves for placing the collecting component 8, which are formed by the limiting holes 9041 on the double-layer plate;

[0078] The cover component 905 is a cylindrical structure with an open bottom, which is sleeved on the support component 904 and in contact with the box 901. The cover component 905 is added to avoid the collecting component from being separated from the limiting groove during the separation process;

[0079] The weighing component 906 is a weight detection device, which is arranged on the box 901 and fixedly connected with the box 901.

[0080] Through the above technical solutions, the technical effects produced in the embodiments of the present application are:

[0081] The flue gas flow at four positions in the same plane in the flow passage 101 of the flue 1 is collected by the air inlet component 2, so that the flue gas flow at the corresponding position enters the air inlet component 2 and then enters the color collection component 6 through the air outlet component 4, and the image is collected and transmitted by the color collection component 6. The flue gas flow passes through the color collection component 6 and then enters the crushing component 7. The dust contained in the flue gas flow is collected by the crushing component 7 and crushed to obtain a sample. The sample is transmitted to the collection component 8. The collection component 8 is placed on the support component 904. The rotation component 903 drives the support component 904 to rotate by starting the driving component 902, so that the sample in the collection component 8 is separated, and the carbon-containing component after the sample is separated is weighed, and then the accurate carbon content value of the fly ash at each position is obtained more accurately.

[0082] By adopting the multi-point sampling mode, the objectivity and accuracy of sampling can be effectively ensured. The color collection component 6 can perform color imaging on the flue gas flow, thereby providing a basis for subsequent storage and analysis of sample color changes. The centrifugal separation component separates the crushed sample, which can effectively separate different components of the material and more accurately extract the carbon-containing part for weighing and calculation.

[0083] Embodiment two

[0084] Referring to the accompanying Figure 5 The color collection component 6 in the embodiment of the present application adopts part of the structure in the above embodiment. The color collection component 6 is a combined structure and includes:

[0085] The shell 601 is internally provided with a cavity, and a plurality of air inlet ends and air outlet ends are respectively arranged on the shell 601;

[0086] The connecting pipe component 602 is an L-shaped pipe structure, which is made of transparent material, preferably glass that can withstand high temperature. One end of the connecting pipe component 602 penetrates the air inlet end of the shell 601 and is connected with the air outlet end of the shunt component 5. The other end penetrates the air outlet end of the shell 601 and is connected with the air inlet end of the crushing component 7.

[0087] The dust blowing component 603 is a gas pump, which is arranged in the cavity and is provided with an air outlet end. The air inlet end of the dust blowing component 603 is connected with a compressed air source outside.

[0088] The air blowing pipe 604 is connected with the connecting pipe component 602 at one end and is connected with the air outlet end of the dust blowing component 603 at the other end. Specifically, the air blowing pipe 604 extends into the connecting pipe component 602.

[0089] The photoelectric coupler 605 is arranged in the cavity and is arranged at the air inlet end of the shell 601. The photoelectric coupler 605 is arranged symmetrically on both sides of the connecting pipe component 602.

[0090] The colorimetric color difference component 606 is a colorimetric color difference meter or a color analyzer, which is arranged on the connecting pipe component 602 and below the photoelectric coupler 605;

[0091] The flue gas flow is color imaged by the photoelectric coupler 605 and the colorimetric color difference component 606;

[0092] In order to facilitate real-time detection and control of each component, a control component is also indispensable, which is arranged on the box 901;

[0093] The control component includes:

[0094] An execution module, which is electrically connected with the driving component 902, the electromagnetic valve, the negative pressure component 3, the crushing component 7, the photoelectric coupler 605, and the colorimetric color difference component 606;

[0095] A detection module, which is electrically connected with the photoelectric coupler 605, the colorimetric color difference component 606, and the weighing component 906, receives detection data of the photoelectric coupler 605, the colorimetric color difference component 606, and the weighing component 906, and performs signal conversion to transmit to a central processing module;

[0096] A storage module, which stores historical fly ash imaging data and is electrically connected with the detection module to record image information collected by the detection module;

[0097] A central processing module, which is electrically connected with the detection module, the execution module, and the storage module, compares detection images of the detection module with historical fly ash imaging data in the storage module to generate a carbon content change trend chart in fly ash;

[0098] A communication module, which is data-connected with the central processing module and an external terminal system, and transmits data information detected and obtained in the central processing module to the external terminal system;

[0099] The communication module is provided with two TCP / IP protocol interfaces PORT1 and PORT2, the TCP / IP protocol interface P2 of the central processing module is connected with the TCP / IP protocol interface PORT2 of the communication module, and the TCP / IP protocol interface PORT1 of the communication module is reserved for backup; the communication module is also provided with an RS232 interface and an RS485 interface, and the RS485 interface is connected with the external terminal system through a copper core twisted pair line;

[0100] A time module, which is connected with the central processing module to provide time data for the central processing module;

[0101] A power module supplies power to the central processing module, the communication module, the detection module, the execution module and the time module.

[0102] The monitoring method in the embodiment is as follows:

[0103] Step one: the flue gas flow at different positions in the same plane in the flow cavity 101 is collected by the air inlet component 2, and is transmitted to the shunt component 5 through the negative pressure component 3 and the air outlet component 4. It should be noted that the central processing module controls the opening or closing of the electromagnetic valve of the air inlet component 2, and thus controls the number of air inlet components 2 and the positions in the flow cavity 101 to be detected.

[0104] Step two: the flue gas sulfur at each position is transmitted to the color collection component 6 by the shunt component 5, and image collection is performed through the photoelectric coupler 605 and the color difference component 606, and data is generated and transmitted to the detection module. The detection module transmits signals to the storage module and the central processing module. The central processing module compares the received image information with the historical fly ash imaging data in the storage module, and generates a corresponding fly ash carbon content change trend chart.

[0105] Step three: the flue gas flow in the color collection component 6 is collected and crushed by the crushing component 7, the collected fly ash is crushed, the corresponding dust is obtained, and the dust is collected by the collection component 8.

[0106] Step four: the collection component 8 with the collected dust is placed on the separation component, and the dust separation operation is performed by rotating the driving component 902. The separated dust is poured into the weighing component 906, weighed by the weighing component 906, and the obtained weight data is transmitted to the central processing module. The central processing module integrates the data, updates the fly ash carbon content change trend chart, and obtains the accurate fly ash carbon content value.

[0107] Step five: the communication component transmits the updated fly ash carbon content change trend chart and the accurate fly ash carbon content value in the central processing module to the external terminal system.

[0108] Through the above technical solution, the technical effects produced in the embodiment of the application are as follows:

[0109] The flue gas flow is detected by the optocoupler 605 and the colorimetric component 606, and corresponding images are generated and uploaded. By adding the dust blowing component 603 and the air blowing pipe 604, the flue gas flow in the connecting pipe component 602 is propelled, preventing some dust in the flue gas flow from adhering to the inner wall of the connecting pipe component 602 and affecting the subsequent detection results, thereby further improving the detection accuracy. In addition, by adding the control component, the flue gas flow in the flow cavity 101 of the flue 1 is monitored, and a trend chart of the change in carbon content in fly ash and the value of carbon content in fly ash are generated in real time, which makes it easier for the observer to understand the situation in the flue 1 and to better control the working status between various components. It has the characteristics of convenient control, real-time monitoring of the flue 1, and improved detection accuracy.

[0110] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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 application.

[0111] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0112] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0113] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0114] The foregoing description of the disclosed embodiments enables a person skilled in the art to make or use the application. Modifications of these embodiments will occur to persons of skill in the art, and that the appended claims are intended to cover all such modifications that do not depart from the true spirit and scope of the application. Therefore, the application is not limited to the embodiments shown but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An online monitoring device for carbon content in fly ash from a coal-fired boiler, characterized in that, include: The flue has a flow cavity inside; A support component, which is a frame structure, is located inside the flow cavity and is fixedly connected to the flue. An air intake component is arranged in a matrix within the flow cavity of the flue and is mounted on a support component, with a fixed connection between the air intake component and the support component. The air intake end of the air intake component faces the direction of flue gas flow; A negative pressure component is provided on the air inlet component, and an air outlet component is also provided thereon; The exhaust component extends through the flue and its inner diameter is smaller than that of the intake component. The diversion component has several air inlets and air outlets, with the air inlets connected to the air outlets. A color collecting component, wherein the air inlet of the color collecting component is connected to the air outlet of the diverting component; The pulverizing component is connected to the air outlet of the color collecting component via a pipe, and a collecting component is provided on the air outlet. The negative pressure component creates a negative pressure zone inside the intake component, allowing flue gas from different locations in the flue to enter the intake component and flow from the exhaust component into the diversion component. After color analysis by the color acquisition component, the flue gas is pulverized by the pulverizing component and collected by the collection component. The air intake component is a pipe-type structure, and a solenoid valve is also provided on it; The air intake component is arranged in a U-shape in the flow chamber of the flue, and it collects flue gas from different positions on the same plane; The color acquisition component is a modular structure, including: A housing, wherein the housing has an internal cavity and is provided with a plurality of air inlets and air outlets; A connecting pipe component, one end of which passes through the air inlet of the housing and is connected to the air outlet of the diverting component, and the other end of which passes through the air outlet of the housing and is connected to the air inlet of the crushing component. The connecting pipe component is made of transparent material; A dust blowing component is provided in a cavity, with an air outlet and an air inlet connected to an external compressed air source. An air blowing pipe, one end of which is connected to a connecting pipe component, and the other end of which is connected to the air outlet of a dust blowing component; An optocoupler is disposed within a cavity at the air inlet of the housing, and the optocouplers are symmetrically arranged on both sides of the connecting pipe component. A colorimetric component is provided on the connecting tube component and is located below the optocoupler. It also includes: a separation component that separates the smoke and dust from the collection component; The separation components include: The housing has an internal mounting cavity; A driving component, wherein the driving component is disposed in the mounting cavity and its rotating end extends through the housing; A rotating component is disposed on the rotating end of the driving component, and is fixedly connected to the rotating end; A support component is provided on the rotating component and is fixedly connected to the rotating component. It is provided with several limiting grooves for placing the collecting component. The sealing component is fitted onto the support component, and its bottom contacts the housing. A weighing component is mounted on the housing and is fixedly connected to the housing.

2. The online monitoring device for carbon content in fly ash of a coal-fired boiler according to claim 1, characterized in that, Also includes: A control component, which is mounted on the housing; The control components include: The execution module is electrically connected to the drive component, solenoid valve, negative pressure component, crushing component, optocoupler, and colorimetric component. The detection module is electrically connected to the optocoupler, the colorimetric component, and the weighing component. A storage module stores historical fly ash imaging data and is electrically connected to the detection module to record image information acquired by the detection module. The central processing module is electrically connected to the detection module, the execution module, and the storage module. It generates a trend chart of carbon content change in fly ash by comparing the detected image from the detection module with the historical fly ash imaging data in the storage module. The communication module is connected to the central processing module and to an external terminal system, and transmits the data information detected and obtained in the central processing module to the external terminal system. A time module, which is connected to the central processing module, provides time data to the central processing module; The power supply module supplies power to the central processing module, communication module, detection module, execution module, and time module.

3. A monitoring method for an online monitoring device for carbon content in fly ash of a coal-fired boiler as described in claim 2, characterized in that, The monitoring methods are as follows: Step 1: The air intake component collects the flue gas flow from different locations on the same plane within the flue gas flow chamber, and transmits it to the diversion component through the negative pressure component and the air outlet component; Step 2: The diversion component transmits the flue gas sulfur from various locations to the color acquisition component. The image is acquired by the optocoupler and the color difference measurement component, and the generated data is transmitted to the detection module. The detection module transmits signals to the storage module and the central processing module. The central processing module compares the received image information with the historical fly ash imaging data in the storage module to generate a corresponding trend chart of carbon content change in fly ash. Step 3: The pulverizing component collects the flue gas flowing out of the color collection component, pulverizes the collected flue gas to obtain the corresponding dust, and collects the dust through the collection component. Step 4: Place the collected dust collection component on the separation component, and perform dust separation operation by driving the component to rotate. The separated dust is poured into the weighing component, which weighs it and transmits the obtained weight data to the central processing module. The central processing module integrates the data, updates the trend chart of carbon content change in fly ash, and obtains an accurate value of carbon content in fly ash. Step 5: The communication component transmits the updated trend chart of carbon content change in fly ash and the accurate value of carbon content in fly ash from the central processing module to the external terminal system.

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