Data-enabled analysis method and system for internal ignition of coal mill of coal-fired unit

Abstract

The invention discloses a data-enabled internal ignition analysis method and system for a coal mill of a coal-fired unit. The system comprises a first greater comparison module, a second greater comparison module, a first AND module, a first off-delay module, a first delay module, a first switching module, a first pulse module, a first AND module, a first NOT module, a second delay module, a second pulse module, a first counting module, a third greater comparison module and a second counting module. A fourth greater comparison module, a third delay module and a third pulse module; according to the method, a coal mill blockage model is adopted as an initial judgment condition, boundary conditions suitable for safe operation of the coal mill are formulated in combination with equipment operation conditions under various working conditions, the problem of fire in the coal mill is analyzed and judged in time, and operators are prompted to stop the coal mill as soon as possible and close an entrance and exit door and a sealing air door of the coal mill. And fire-fighting steam or inert gas is added for fire extinguishing.

Description

Technical Field

[0001] The present invention belongs to the field of intelligent control of thermal power plants, and specifically relates to a data-enabled coal-fired unit coal mill internal ignition analysis method and system. Background Art

[0002] In coal-fired units, internal fire in the coal mill is a serious safety issue, which not only threatens the safe operation of the equipment, but also may have a major impact on the entire power generation system. At present, the original causes of this problem include: coal type factors. When burning coal with high volatile matter, high fixed carbon and low ash melting point, it is easy to cause pebble coal to smoke and catch fire; pebble coal discharge problems. If pebble coal is not discharged in time or improperly handled, it may cause pebble coal to accumulate and catch fire inside the coal mill; environmental temperature problems. The higher the ambient temperature, the greater the possibility of pebble coal smoking and catching fire; mill outlet temperature problems. The higher the mill outlet temperature, the easier it is for pebble coal to smoke and catch fire; equipment failure problems. Failure of valves or equipment related to pebble coal causes pebble coal to fail to be discharged normally and accumulate, resulting in smoke and fire. Insufficient inspection problems. Insufficient inspection or poor monitoring may result in the problem of pebble coal smoking and catching fire not being discovered and handled in time.

[0003] Based on the reasons under the above six different working conditions, it is urgently necessary to develop a data-enabled coal-fired unit coal mill internal fire analysis method and system to solve the internal fire problem of the coal mill and help the equipment operate safely and stably. Summary of the invention

[0004] The purpose of the present invention is to provide a data-enabled coal-fired unit coal mill internal fire analysis method and system. The present invention adopts the coal mill blockage model as the initial judgment condition, combines the equipment operating conditions under various working conditions, formulates boundary conditions suitable for the safe operation of the coal mill, and timely analyzes and judges the problem of internal fire in the coal mill, prompting the operating personnel to shut down the coal mill as soon as possible, close the coal mill entrance and exit doors and sealing air dampers, and put in fire steam or inert gas for fire extinguishing.

[0005] In order to achieve the above object, the present invention adopts the following technical solution: A data-enabled coal-fired unit coal mill internal ignition analysis system, comprising a first greater than comparison module, a second greater than comparison module, a first phase and module, a first break delay module, a first delay module, a first switching module, a first pulse module, a first and module, a first negation module, a second delay module, a second pulse module, a first counting module, a third greater than comparison module, a second counting module, a fourth greater than comparison module, a third delay module and a third pulse module; The output end of the first greater than comparison module and the output end of the second greater than comparison module are both connected to the first phase AND module, and the output end of the first phase AND module is connected to the first delay module; the output end of the first delay module is respectively connected to the first AND module, the EN end of the first counting module and the EN end of the second counting module, the output end of the first negative module is connected to the first AND module, the output end of the first AND module and the output end of the first switching module are respectively connected to the input end and the R end of the second delay module, and the output end of the second delay module is connected to the second pulse module; The output end of the first off-delay module is connected to the EN end of the first switching module; the output end of the second pulse module and the output end of the third pulse module are respectively connected to the input end and the R end of the second counting module, the output end of the second counting module is connected to the fourth greater than comparison module, the output end of the fourth greater than comparison module is connected to the third delay module, and the output end of the third delay module is connected to the third pulse module; the output end of the first pulse module and the output end of the third pulse module are respectively connected to the input end and the R end of the first counting module, and the output end of the first counting module is connected to the third greater than comparison module.

[0006] A further improvement of the present invention is that it also includes a first subtraction module, a second subtraction module, a fifth greater than comparison module, a sixth greater than comparison module, a seventh greater than comparison module, an eighth greater than comparison module, a fourth delay module, a fifth delay module, a sixth delay module, a second and module, a third and module, a first or module and a fourth and module; The output end of the first subtraction module is connected to the fifth greater than comparison module, and the output end of the fifth greater than comparison module is connected to the fourth delay module; the air-powder mixed temperature at the coal mill outlet is connected to the sixth greater than comparison module, and the output end of the sixth greater than comparison module is connected to the fifth delay module; the air-powder mixed temperature at the coal mill outlet and the air-powder mixed temperature at the coal mill outlet in the previous minute are both connected to the second subtraction module, the output end of the second subtraction module is connected to the seventh greater than comparison module, the output end of the seventh greater than comparison module is connected to the sixth delay module, and the output end of the sixth delay module and the coal mill blockage warning are both connected to the second AND module; the output end of the fourth delay module, the output end of the fifth delay module, and the output end of the second AND module are all connected to the first OR module; the output end of the eighth greater than comparison module is connected to the third AND module, and the output end of the first OR module and the output end of the third AND module are both connected to the fourth AND module.

[0007] A further improvement of the present invention is that the speed of the coal feeder belt motor is connected to a first greater than comparison module, and the coal mill current is connected to a second greater than comparison module.

[0008] A further improvement of the present invention is that the output end of the second delay module is also connected to the calling of the Python main model for coal mill plugging grinding, and the calling of the Python main model for coal mill plugging grinding is respectively connected to the first pulse module and the first break delay module.

[0009] A further improvement of the present invention is that the output end of the third greater than comparison module is connected to the coal mill plugging grinding warning.

[0010] A further improvement of the present invention is that both the coal mill outlet air-powder mixture temperature and the coal mill outlet air-powder mixture temperature in the previous 1 minute are connected to the first subtraction module.

[0011] A further improvement of the present invention is that the output end of the coal feeding amount is connected to the eighth greater than comparison module, and the grinding roll lowering in place is connected to the third AND module.

[0012] A further improvement of the present invention is that the output end of the fourth AND module is connected to the coal mill fire warning.

[0013] A method for analyzing the internal fire of a coal mill in a coal-fired unit empowered by data includes: When the speed of the coal feeder belt motor meets the built-in constant 100 of the first greater than comparison module and the coal mill current meets the built-in constant 5 of the second greater than comparison module, and when this condition meets the built-in constant 30 of the first delay module, then after the judgment of the first AND module, the second delay module, and the second pulse module, it is concluded that the Python main model for coal mill plugging grinding is called; When the calling of the Python main model for coal mill plugging grinding meets the built-in constant 3 of the first break delay module, it triggers the built-in constant 8 of the first switching module, and this signal is output after 8 seconds; conversely, it triggers the built-in constant 15 of the first switching module, and this signal is output after 15 seconds; this function is used to trigger the R end of the second delay module to reset the signal of the calling of the Python main model for coal mill plugging grinding to 0; When the speed of the coal feeder belt motor meets the built-in constant 100 of the first greater than comparison module and the coal mill current meets the built-in constant 5 of the second greater than comparison module, and when this condition meets the built-in constant 30 of the first delay module, it triggers the counting function of the first counting module. This functional module performs effective counting based on the triggering times of the calling of the Python main model for coal mill plugging grinding at the input end. When it meets the built-in constant 3 of the third greater than comparison module, it outputs the coal mill plugging grinding warning; when it is necessary to reset this function, the calling of the Python main model for coal mill plugging grinding needs to successively meet the built-in constant 3 of the second counting module, the fourth greater than comparison module, the third delay module, and the third pulse module, and finally the counting function of the first counting module can be reset to 0, and the coal mill plugging grinding warning also becomes 0.

[0014] A further improvement of the present invention also includes: The first or module is triggered when any of the following three conditions are met: The air-powder mixed temperature at the outlet of the coal mill and the air-powder mixed temperature at the outlet of the coal mill one minute ago are sequentially subtracted by the first subtraction module, judged by the built-in constant 8 of the fifth greater than comparison module, and judged by the built-in constant 10 of the fourth delay module; the air-powder mixed temperature at the outlet of the coal mill is sequentially judged by the built-in constant 110 of the sixth greater than comparison module and the built-in constant 10 of the fifth delay module; the air-powder mixed temperature at the outlet of the coal mill and the air-powder mixed temperature at the outlet of the coal mill and the air-powder mixed temperature at the outlet of the coal mill one minute ago are sequentially subtracted by the second subtraction module, judged by the built-in constant 5 of the seventh greater than comparison module, and judged by the built-in constant 10 of the sixth delay module, and the coal mill blockage warning is satisfied at the same time; The third AND module is triggered when any of the following conditions are met: The coal feeding quantity satisfies the built-in constant 10 of the eighth greater than comparison module, and the grinding roller is lowered to 1; When the first OR module is 1 and the third AND module is 1, the coal mill fire warning is finally output after judgment by the fourth AND module.

[0015] Compared with the prior art, the present invention has at least the following beneficial technical effects: The present invention provides a data-enabled coal-fired unit coal mill internal fire analysis method, which adopts a quantitative boundary condition analysis method to sort out and analyze the causes of coal mill fire, formulate an operating boundary range suitable for coal mill fire judgment, and guide the safe operation of the equipment.

[0016] The present invention provides a data-enabled coal-fired unit coal mill internal ignition analysis system, which adopts a data set collected by on-site sensor equipment and utilizes a modular judgment system to analyze and organize the coal mill operation data. The system performs health evaluation and safety guidance on the equipment operation status.

[0017] In summary, the data-enabled coal-fired unit coal mill internal fire analysis method and system described in the present invention take into account the safety, stability and efficiency of the coal mill under different operating conditions, timely analyze and determine the problem of internal fire in the coal mill, and prompt the operating personnel to shut down the coal mill as soon as possible, close the coal mill entrance and exit doors and sealing dampers, and introduce fire steam or inert gas for fire extinguishing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the internal ignition analysis system of the coal-fired unit coal mill enabled by the data of the present invention; Figure 2 Schematic diagram of the internal ignition analysis system of the coal-fired unit coal mill enabled by the data of the present invention; Figure 3 This is a rendering of an embodiment of the present invention.

[0019] In the attached figure: 001. Call Python main model coal mill blockage, 002. Coal feeder belt motor speed, 003. Coal mill current, 004. First greater than comparison module, 005. Second greater than comparison module, 006. First phase and module, 007. First break delay module, 008. First delay module, 009. First switching module, 010. First pulse module, 011. First and module, 012. First non-module, 013. Second delay module, 014. Second pulse module, 015. First counting module, 016. Third greater than comparison module, 017. Second counting module, 018. Fourth greater than comparison module, 019. Third delay module, 020. The third pulse module, 021, coal mill blockage warning, 022, coal mill outlet air-powder mixture temperature, 023, coal mill outlet air-powder mixture temperature in the previous minute, 024, coal feed amount, 025, grinding roller lowered into place, 026, first subtraction module, 027, second subtraction module, 028, fifth greater than comparison module, 029, sixth greater than comparison module, 030, seventh greater than comparison module, 031, eighth greater than comparison module, 032, fourth delay module, 033, fifth delay module, 034, sixth delay module, 035, second and module, 036, third and module, 037, first or module, 038, fourth and module, 039, coal mill fire warning. DETAILED DESCRIPTION

[0020] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0025] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0026] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0027] Various structural schematic diagrams of the embodiments disclosed in the present invention are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0028] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0029] The present invention provides a data-enabled coal-fired unit coal mill internal fire analysis method and system. The present invention adopts the coal mill blockage model as the initial judgment condition, combines the equipment operating conditions under various working conditions, formulates boundary conditions suitable for the safe operation of the coal mill, and timely analyzes and judges the problem of internal fire in the coal mill, prompting the operating personnel to shut down the coal mill as soon as possible, close the coal mill entrance and exit doors and sealing dampers, and introduce fire steam or inert gas for fire extinguishing.

[0030] Example 1 like Figure 1 As shown, the data-enabled coal-fired unit coal mill internal ignition analysis system provided by the present invention includes: calling the Python main model coal mill blockage 001, the coal feeder belt motor speed 002, the coal mill current 003, the first greater than comparison module 004, the second greater than comparison module 005, the first phase and module 006, the first break delay module 007, the first delay module 008, the first switching module 009, the first pulse module 010, the first and module 011, the first non-module 012, the second delay module 013, the second pulse module 014, the first counting module 015, the third greater than comparison module 016, the second counting module 017, the fourth greater than comparison module 0 18. The third delay module 019, the third pulse module 020, the coal mill blockage warning 021, the coal mill outlet air-powder mixture temperature 022, the coal mill outlet air-powder mixture temperature in the previous minute 023, the coal feed amount 024, the grinding roller lowering into place 025, the first subtraction module 026, the second subtraction module 027, the fifth greater than comparison module 028, the sixth greater than comparison module 029, the seventh greater than comparison module 030, the eighth greater than comparison module 031, the fourth delay module 032, the fifth delay module 033, the sixth delay module 034, the second and module 035, the third and module 036, the first or module 037, the fourth and module 038 and the coal mill fire warning 039.

[0031] The coal feeder belt motor speed 002 is connected to the first greater than comparison module 004, the coal mill current 003 is connected to the second greater than comparison module 005, the output end of the first greater than comparison module 004 and the output end of the second greater than comparison module 005 are both connected to the first phase AND module 006, and the output end of the first phase AND module 006 is connected to the first delay module 008; the output end of the first delay module 008 is respectively connected to the first AND module 011, the EN end of the first counting module 015 and the EN end of the second counting module 017, the output end of the first negative module 012 is connected to the first AND module 011, the output end of the first AND module 011 and the output end of the first switching module 009 are respectively connected to the input end and R end of the second delay module 013, and the output end of the second delay module 013 is sequentially connected to the second pulse module 014 and the Python main model coal mill blockage 001 is called.

[0032] The Python main model coal mill blockage 001 is called to be connected to the first pulse module 010 and the first off-delay module 007 respectively, and the output end of the first off-delay module 007 is connected to the EN end of the first switching module 009; the output end of the second pulse module 014 and the output end of the third pulse module 020 are respectively connected to the input end and R end of the second counting module 017, the output end of the second counting module 017 is connected to the fourth greater than comparison module 018, the output end of the fourth greater than comparison module 018 is connected to the third delay module 019, and the output end of the third delay module 019 is connected to the third pulse module 020; the output end of the first pulse module 010 and the output end of the third pulse module 020 are respectively connected to the input end and R end of the first counting module 015, the output end of the first counting module 015 is connected to the third greater than comparison module 016, and the output end of the third greater than comparison module 016 is connected to the coal mill blockage warning 021.

[0033] like Figure 2 As shown, in this embodiment, it also includes: The coal mill outlet air-powder mixed temperature 022 and the coal mill outlet air-powder mixed temperature 023 in the previous minute are both connected to the first subtraction module 026, the output end of the first subtraction module 026 is connected to the fifth greater than comparison module 028, and the output end of the fifth greater than comparison module 028 is connected to the fourth delay module 032; the coal mill outlet air-powder mixed temperature 022 is connected to the sixth greater than comparison module 029, and the output end of the sixth greater than comparison module 029 is connected to the fifth delay module 033; the coal mill outlet air-powder mixed temperature 022 and the coal mill outlet air-powder mixed temperature 023 in the previous minute are both connected to the second subtraction module 027, the output end of the second subtraction module 027 is connected to the seventh greater than comparison module 030, and the seventh greater than comparison module 030 is connected to the output end of the sixth greater than comparison module 029. The output end of the comparison module 030 is connected to the sixth delay module 034, and the output end of the sixth delay module 034 and the coal mill blockage warning 021 are both connected to the second AND module 035; the output end of the fourth delay module 032, the output end of the fifth delay module 033, and the output end of the second AND module 035 are all connected to the first OR module 037; the output end of the coal feed quantity 024 is connected to the eighth greater than comparison module 031, and the output end of the eighth greater than comparison module 031 and the grinding roller lowering position 025 are both connected to the third AND module 036, the output end of the first OR module 037 and the output end of the third AND module 036 are both connected to the fourth AND module 038, and the output end of the fourth AND module 038 is connected to the coal mill fire warning 039.

[0034] Example 2 like Figure 1 As shown, the data-enabled coal-fired unit coal mill internal ignition analysis method provided by the present invention includes: 1) When the speed of the coal feeder belt motor 002 satisfies the first built-in constant 100 greater than the comparison module 004 and the coal mill current 003 satisfies the second built-in constant 5 greater than the comparison module 005, when this condition meets the built-in constant 30 of the first delay module 008, then after the judgment of the first and module 011, the second delay module 013, and the second pulse module 014, it is concluded that the Python main model coal mill blockage 001 is called.

[0035] 2) When the Python main model coal mill blockage 001 is called and the built-in constant 3 of the first interruption delay module 007 is met, the built-in constant 8 of the first switching module 009 is triggered, and this signal is output after 8 seconds; conversely, the built-in constant 15 of the first switching module 009 is triggered, and this signal is output after 15 seconds. This function is used to trigger the R end of the second delay module 013 to reset the signal of calling the Python main model coal mill blockage 001 to 0.

[0036] 3) When the speed of the coal feeder belt motor 002 satisfies the first built-in constant 100 greater than the comparison module 004 and the coal mill current 003 satisfies the second built-in constant 5 greater than the comparison module 005, when this condition satisfies the built-in constant 30 of the first delay module 008, the counting function of the first counting module 015 is triggered. This function module calls the Python main model coal mill blockage 001 according to the input end to effectively count the number of trigger times. When the third built-in constant 3 greater than the comparison module 016 is met, the coal mill blockage warning 021 is output; when the function needs to be reset, calling the Python main model coal mill blockage 001 needs to satisfy the second counting module 017, the fourth built-in constant 3 greater than the comparison module 018, the third delay module 019, and the third pulse module 020 in sequence, and finally the counting function of the first counting module 015 can be reset to 0, and the coal mill blockage warning 021 also becomes 0.

[0037] like Figure 2 As shown, in this embodiment, it also includes: 1) The first or module 037 is triggered when any one of the following three conditions is met: the air-powder mixed temperature 022 at the coal mill outlet and the air-powder mixed temperature 023 at the coal mill outlet one minute ago are sequentially subtracted by the first subtraction module 026, judged by the built-in constant 8 of the fifth greater than comparison module 028, and judged by the built-in constant 10 of the fourth delay module 032; the air-powder mixed temperature 022 at the coal mill outlet is sequentially judged by the built-in constant 110 of the sixth greater than comparison module 029, and judged by the built-in constant 10 of the fifth delay module 033; the air-powder mixed temperature 022 at the coal mill outlet and the air-powder mixed temperature 023 at the coal mill outlet one minute ago are sequentially subtracted by the second subtraction module 027, judged by the built-in constant 5 of the seventh greater than comparison module 030, and judged by the built-in constant 10 of the sixth delay module 034, and the coal mill blockage warning 021 is 1 at the same time.

[0038] 2) The third AND module 036 is triggered when any of the following conditions is met: the coal feed quantity 024 satisfies the eighth greater than the built-in constant 10 of the comparison module 031, and the grinding roller lowering position 025 is 1.

[0039] 3) When the first or module 037 is 1 and the third and module 036 is 1, after the fourth and module 038 makes a judgment, the coal mill fire warning 039 is finally output.

[0040] Example 1 like Figure 3As shown, through the implementation and application of the technology of the present invention in a simulation environment, the historical curve of the internal ignition of the powder making system is used for verification. When the historical operating condition curve is in "local combustion", the "fire temperature" begins to gradually rise. When the "combustion surface expands", the model early warning judgment identifies that an early warning prompt has been issued when the combustion surface expands, prompting the operating personnel to take relevant treatment measures in time. This avoids the further expansion of the accident and the occurrence of "full combustion" and "serious combustion", providing a guarantee for the safety of the equipment.

[0041] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0042] In addition, it should be understood that although this specification is described in accordance with the implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art. The above content is only to illustrate the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution according to the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. Data-enabled coal-fired unit coal mill internal ignition analysis system, characterized by: It comprises a first greater than comparison module (004), a second greater than comparison module (005), a first phase and module (006), a first break delay module (007), a first delay module (008), a first switching module (009), a first pulse module (010), a first and module (011), a first negation module (012), a second delay module (013), a second pulse module (014), a first counting module (015), a third greater than comparison module (016), a second counting module (017), a fourth greater than comparison module (018), a third delay module (019) and a third pulse module (020); The output end of the first greater than comparison module (004) and the output end of the second greater than comparison module (005) are both connected to the first phase AND module (006), and the output end of the first phase AND module (006) is connected to the first delay module (008); the output end of the first delay module (008) is respectively connected to the first AND module (011), the EN end of the first counting module (015) and the EN end of the second counting module (017); the output end of the first negative module (012) is connected to the first AND module (011), the output end of the first AND module (011) and the output end of the first switching module (009) are respectively connected to the input end and the R end of the second delay module (013); the output end of the second delay module (013) is connected to the second pulse module (014); The output end of the first off-delay module (007) is connected to the EN end of the first switching module (009); the output end of the second pulse module (014) and the output end of the third pulse module (020) are respectively connected to the input end and the R end of the second counting module (017); the output end of the second counting module (017) is connected to the fourth greater than comparison module (018); the output end of the fourth greater than comparison module (018) is connected to the third delay module (019); the output end of the third delay module (019) is connected to the third pulse module (020); the output end of the first pulse module (010) and the output end of the third pulse module (020) are respectively connected to the input end and the R end of the first counting module (015); the output end of the first counting module (015) is connected to the third greater than comparison module (016).

2. The data-enabled coal-fired unit coal mill internal ignition analysis system according to claim 1 is characterized in that: It also includes a first subtraction module (026), a second subtraction module (027), a fifth greater than comparison module (028), a sixth greater than comparison module (029), a seventh greater than comparison module (030), an eighth greater than comparison module (031), a fourth delay module (032), a fifth delay module (033), a sixth delay module (034), a second AND module (035), a third AND module (036), a first OR module (037) and a fourth AND module (038); The output end of the first subtraction module (026) is connected to the fifth greater than comparison module (028), and the output end of the fifth greater than comparison module (028) is connected to the fourth delay module (032); the air-powder mixed temperature (022) at the coal mill outlet is connected to the sixth greater than comparison module (029), and the output end of the sixth greater than comparison module (029) is connected to the fifth delay module (033); the air-powder mixed temperature (022) at the coal mill outlet and the air-powder mixed temperature (023) at the coal mill outlet in the previous minute are both connected to the second subtraction module (027), and the output end of the second subtraction module (027) is connected to the seventh greater than comparison module (030). ), the output end of the seventh greater than comparison module (030) is connected to the sixth delay module (034), the output end of the sixth delay module (034) and the coal mill blockage warning (021) are both connected to the second AND module (035); the output end of the fourth delay module (032), the output end of the fifth delay module (033), and the output end of the second AND module (035) are all connected to the first OR module (037); the output end of the eighth greater than comparison module (031) is connected to the third AND module (036), and the output end of the first OR module (037) and the output end of the third AND module (036) are both connected to the fourth AND module (038).

3. The data-enabled coal-fired unit coal mill internal ignition analysis system according to claim 2 is characterized in that: The coal feeder belt motor speed (002) is connected to a first greater than comparison module (004), and the coal mill current (003) is connected to a second greater than comparison module (005).

4. The data-enabled coal-fired unit coal mill internal ignition analysis system according to claim 3 is characterized in that: The output end of the second delay module (013) is also connected to calling the Python main model coal mill blockage (001), and the calling Python main model coal mill blockage (001) is respectively connected to the first pulse module (010) and the first interruption delay module (007).

5. The data-enabled coal-fired unit coal mill internal ignition analysis system according to claim 4 is characterized in that: The output end of the third greater than comparison module (016) is connected to the coal mill blockage warning (021).

6. The data-enabled coal-fired unit coal mill internal ignition analysis system according to claim 5, characterized in that: The air-powder mixture temperature at the coal mill outlet (022) and the air-powder mixture temperature at the coal mill outlet in the previous minute (023) are both connected to the first subtraction module (026).

7. The data-enabled coal-fired unit coal mill internal ignition analysis system according to claim 6, characterized in that: The output end of the coal feeding amount (024) is connected to the eighth greater than comparison module (031), and the grinding roller lowering position (025) is connected to the third and module (036).

8. The data-enabled coal-fired unit coal mill internal ignition analysis system according to claim 7, characterized in that: The output end of the fourth AND module (038) is connected to the coal mill fire warning (039).

9. A data-enabled coal-fired unit coal mill internal fire analysis method, characterized in that: The method is based on the data-enabled coal-fired unit coal mill internal ignition analysis system according to claim 8, comprising: When the speed of the coal feeder belt motor (002) satisfies the first built-in constant 100 of the comparison module (004) and the coal mill current (003) satisfies the second built-in constant 5 of the comparison module (005), when this condition satisfies the built-in constant 30 of the first delay module (008), then after the judgment of the first and module (011), the second delay module (013) and the second pulse module (014), it is concluded that the Python main model coal mill blockage (001) is called; When the Python main model coal mill blockage (001) is called and the built-in constant 3 of the first interruption delay module (007) is satisfied, the built-in constant 8 of the first switching module (009) is triggered, and this signal is output after 8 seconds; otherwise, the built-in constant 15 of the first switching module (009) is triggered, and this signal is output after 15 seconds; this function is used to trigger the R end of the second delay module (013) to reset the signal of calling the Python main model coal mill blockage (001) to 0; When the speed of the coal feeder belt motor (002) satisfies the built-in constant 100 of the first greater than comparison module (004) and the coal mill current (003) satisfies the built-in constant 5 of the second greater than comparison module (005), when this condition satisfies the built-in constant 30 of the first delay module (008), the counting function of the first counting module (015) is triggered. The function module effectively counts the number of trigger times of the Python main model coal mill blockage (001) according to the input end. When the built-in constant 3 of the third greater than comparison module (016) is satisfied, the coal mill blockage warning (021) is output. When it is necessary to reset the function, calling the Python main model coal mill blockage (001) needs to sequentially satisfy the second counting module (017), the fourth greater than comparison module (018) built-in constant 3, the third delay module (019), and the third pulse module (020). Finally, the counting function of the first counting module (015) can be reset to 0, and the coal mill blockage warning (021) also becomes 0.

10. The data-enabled coal-fired unit coal mill internal fire analysis method according to claim 9, characterized in that: Also includes: The first OR module (037) is triggered when any of the following three conditions are met: The air-powder mixed temperature (022) at the outlet of the coal mill and the air-powder mixed temperature (023) at the outlet of the coal mill one minute before are sequentially subjected to subtraction calculation by the first subtraction module (026), judgment by the built-in constant 8 of the fifth greater than comparison module (028), and judgment by the built-in constant 10 of the fourth delay module (032); the air-powder mixed temperature (022) at the outlet of the coal mill is sequentially subjected to the built-in constant 110 of the sixth greater than comparison module (029), and judgment by the built-in constant 10 of the fifth delay module (033); the air-powder mixed temperature (022) at the outlet of the coal mill and the air-powder mixed temperature (023) at the outlet of the coal mill one minute before are sequentially subjected to subtraction calculation by the second subtraction module (027), judgment by the built-in constant 5 of the seventh greater than comparison module (030), and judgment by the built-in constant 10 of the sixth delay module (034), and the coal mill blockage warning (021) is satisfied to be 1 at the same time; The third AND module (036) is triggered when any of the following conditions are met: The coal feeding amount (024) satisfies the built-in constant 10 of the eighth greater than comparison module (031), and the grinding roller lowering position (025) is 1; When the first OR module (037) is 1 and the third AND module (036) is 1, after judgment by the fourth AND module (038), a coal mill fire warning (039) is finally output.

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