Clinker adhesion evaluation system, information processing device, and program

Abstract

To provide a system for determining the soundness of heating piping.SOLUTION: A clinker adhesion evaluation system 100 includes a 3D laser scan device 2 installed so as to be able to scan heating piping 6 of a boiler 5, a metal temperature measurement device 3 provided in the heating piping 6 of the boiler 5, and an information processing device 1, and the information processing device 1 includes a laser scan result reception part 101 for receiving a laser scan result of the 3D scan device 2 to the heating piping 6 of the boiler 5, a first clinker evaluation part 103 for evaluating clinker 7 adhered to the surface of the heating piping 6, a metal temperature reception part 102 for receiving a metal temperature measured by the metal temperature measurement device 3, a second clinker evaluation part 104 for evaluating the clinker 7 from a drop value of the metal temperature, and a clinker determination part 105 for determining the soundness of the heating piping 6 on the basis of an evaluation result of the first clinker evaluation part 103 and an evaluation result of the second clinker evaluation part 104.SELECTED DRAWING: Figure 1

Description

Technical Field

[0005]

[0001] The present invention relates to a clinker adhesion evaluation system, an information processing device, and a program.

Background Art

[0002] Conventionally, in a coal-fired thermal power plant, it is inevitable that clinkers (lumps of eluted components of components contained in coal such as ash) generated during boiler combustion adhere to the heating pipes arranged in the boiler. The adhesion of these clinkers inhibits the heat transfer on the surface of the heating pipes, leading to a decrease in boiler heat absorption and boiler efficiency. Since these heating pipes in the boiler are installed in a high-temperature, closed, and dark place surrounded by a boiler casing, it is almost impossible to visually check the clinker adhesion situation, and it is difficult to grasp the exact fouling state inside the boiler.

[0003] As a solution to this problem, as a method for checking the adhesion or fouling of clinkers in a boiler, a technique has been proposed in which a combustion state of the boiler is judged by calculating using a concentration signal of a smoke density meter installed in a boiler outlet flue and a temperature signal measured by a thermometer, and the internal fouling state is grasped. For example, there is Patent Document 1 as a document in which this kind of technique is described.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] This invention focuses on the fact that clinker buildup affects the concentration and temperature of exhaust gas generated during boiler combustion, and aims to understand the overall degree of boiler contamination. However, there are many different brands of coal used in coal-fired boilers, and even with a single brand, it is almost impossible to find coal with the same composition. Furthermore, when burning mixed coal of different brands or a single brand, the concentrations of nitrogen oxides (NOx) and sulfur oxides (SOx) in the boiler exhaust gas do not always show the same values ​​even when burning the same mass of coal. In addition, the combustion air used during combustion experiences considerable temperature differences between summer and winter, which also affects the trend of boiler exhaust gas temperature. For these reasons, understanding contamination remains difficult. Moreover, it is not possible to determine in detail "where" and "to what extent" clinker buildup is present.

[0006] The present invention has been made in view of the above, and aims to provide a system for determining the integrity of boiler heating piping. [Means for solving the problem]

[0007] (1) The clinker adhesion evaluation system comprises a 3D laser scanning device installed to scan the heating pipes of a boiler, a metal temperature measuring device installed on the heating pipes of the boiler, and an information processing device. The information processing device comprises a laser scan result receiving unit that receives the laser scan results of the 3D laser scanning device for the heating pipes in the boiler, a first clinker evaluation unit that evaluates the clinker adhering to the surface of the heating pipes from the difference between the laser scan results received by the laser scan result receiving unit and a pre-stored laser scan result of the heating pipes in a healthy state, a metal temperature receiving unit that receives the metal temperature measured by the metal temperature measuring device, a second clinker evaluation unit that evaluates the clinker from the decrease in metal temperature received by the metal temperature receiving unit compared to a pre-stored metal temperature in a healthy state, and a clinker determination unit that determines the integrity of the heating pipes based on the evaluation results of the first clinker evaluation unit and the evaluation results of the second clinker evaluation unit.

[0008] According to the invention of (1), a system for determining the integrity of heating pipes is provided.

[0009] (2) In the clinker adhesion evaluation system of (1), the difference is based on the volume of the heating pipe obtained based on the shape obtained by 3D laser scanning.

[0010] According to the invention of (2), the clinker deposition volume can be determined, making it possible to prevent damage to the heating pipe caused by clinker.

[0011] (3) In the clinker adhesion evaluation system of (1) or (2), if the difference evaluated by the first clinker evaluation unit exceeds a pre-stored threshold, the clinker determination unit determines that the integrity of the boiler may have been impaired due to clinker adhesion to the heating pipe.

[0012] According to the invention of (3), a determination is made that the soundness may have been compromised, which is the stage just before a definitive conclusion.

[0013] (4) In the clinker adhesion evaluation system of (1) or (2), if the metal temperature evaluated by the second clinker evaluation unit falls below a value stored in advance, the clinker determination unit determines that the integrity of the boiler may have been impaired due to clinker adhesion to the heating pipe on which the metal temperature measuring device is installed.

[0014] According to invention (4), clinker adhesion in heating pipes located in areas where 3D laser scanning cannot be performed can also be evaluated. Therefore, the possibility of clinker adhesion can be reliably identified.

[0015] (5) In the clinker adhesion evaluation system of (1) or (2), if the difference evaluated by the first clinker evaluation unit exceeds a pre-stored threshold, and the metal temperature evaluated by the second clinker evaluation unit falls below a pre-stored value, the clinker determination unit determines that the integrity of the boiler has been compromised due to clinker adhesion to the heating pipe.

[0016] According to the invention of (5), the soundness of the boiler can be reliably evaluated by combining the two evaluation results. Therefore, it is possible to provide a result that definitively determines that the soundness is compromised.

[0017] (6) In the clinker adhesion evaluation system described in (1) to (5), a 3D laser scanning device performs laser scanning of the heating pipes inside the boiler from multiple directions.

[0018] According to invention (6), a 3D laser scan with fewer blind spots can be performed, allowing for a more accurate estimation of the amount of clinker buildup.

[0019] (7) In any of the clinker adhesion evaluation systems described in (1) to (6), a metal temperature measuring device is provided in the heating pipe where the laser of the 3D laser scanning device cannot reach.

[0020] According to invention (7), blind spots that occur even when multiple 3D laser scanning devices are provided can be compensated for.

[0021] (8) The information processing device includes a laser scan result receiving unit that receives the laser scan results of a 3D laser scanning device for heating pipes in a boiler; a first clinker evaluation unit that evaluates the clinker adhering to the surface of the heating pipes from the difference between the laser scan results received by the laser scan result receiving unit and the laser scan results for heating pipes in a healthy state that are stored in advance; a metal temperature receiving unit that receives the metal temperature measured by a metal temperature measuring device; a second clinker evaluation unit that evaluates the clinker from the decrease in metal temperature received by the metal temperature receiving unit compared to the metal temperature in a healthy state that is stored in advance; and a clinker determination unit that determines the integrity of the heating pipes based on the evaluation results of the first clinker evaluation unit and the evaluation results of the second clinker evaluation unit.

[0022] According to the invention of (8), it is possible to provide an information processing device that can reliably determine the integrity of a heating pipe.

[0023] (9) The program causes a computer to execute a laser scan result receiving function for receiving the laser scan result of a 3D laser scanning device for a heating pipe in a boiler, a first clinker evaluation function for evaluating a clinker adhering to the surface of the heating pipe from the difference between the laser scan result received by the laser scan result receiving function and the laser scan result of the sound heating pipe stored in advance, a metal temperature receiving function for receiving the metal temperature measured by a metal temperature measuring device, a second clinker evaluation function for evaluating a clinker from the decrease value of the metal temperature received by the metal temperature receiving function compared to the sound metal temperature stored in advance, and a soundness determination function for determining the soundness of the heating pipe based on the evaluation result of the first clinker evaluation function and the evaluation result of the second clinker evaluation function.

[0024] According to the invention of (9), it is possible to provide a program for reliably determining the soundness of a heating pipe.

Brief Description of the Drawings

[0025] [Figure 1] It is a schematic diagram showing the appearance of a system for reliably determining the soundness of a heating pipe according to an embodiment of the present invention. [Figure 2] It is a schematic diagram showing the hardware configuration of an information processing device according to an embodiment of the present invention. [Figure 3] It is a block diagram showing the functional configuration of an information processing device according to an embodiment of the present invention. [Figure 4] It is a side view showing the details of the mounting form of a 3D scanning device according to an embodiment of the present invention. [Figure 5] It is a side view of a boiler showing the mounting arrangement of a 3D laser scanning device and a metal temperature measuring device according to an embodiment of the present invention. [Figure 6] It is a flowchart showing the steps from the evaluation to the removal of a clinker according to an embodiment of the present invention.

Modes for Carrying Out the Invention

[0026] Hereinafter, a clinker adhesion evaluation system 100 for determining the integrity of a heating pipe 6 according to an embodiment of the present invention will be described with reference to the drawings. In each figure, the same components are denoted by the same reference numerals.

[0027] Figure 1 shows an overall overview of a clinker adhesion evaluation system 100 for determining the integrity of a heating pipe 6 according to an embodiment of the present invention. A first 3D laser scanning device 2a, a second 3D laser scanning device 2b, and a metal temperature measuring device 3 are installed in the boiler 5. Hereinafter, when the functions of the first 3D laser scanning device 2a and the second 3D laser scanning device 2b are the same and not distinguished, they may be referred to as 3D laser scanning device 2. The 3D laser scanning device 2 and the metal temperature measuring device 3 are connected by an information processing device 1 and a wireless transceiver 4.

[0028] The information processing device 1 evaluates the clinker 7 adhering to the heating pipes 6 of the boiler 5 based on the information received from the 3D laser scanning device 2 and the metal temperature measuring device 3. Based on the evaluation results of the clinker 7, the information processing device 1 determines the integrity of the heating pipes 6.

[0029] Figure 2 is a block diagram showing the hardware configuration of the information processing device 1. As shown in Figure 2, the information processing device 1 comprises a control unit 10, an input / output unit 16, a communication means 17, and a storage unit 18. The control unit 10 includes a processor 11, a ROM (Read Only Memory) 12, a RAM (Random Access Memory) 13, a bus 14, and an input / output interface 15. The information processing device 1 may be a general-purpose personal computer capable of performing various functions by installing various programs, or it may be a computer embedded in dedicated hardware.

[0030] The processor 11 performs various calculations and processes. The processor 11 is, for example, a CPU (central processing unit), MPU (micro processing unit), SoC (system on a chip), DSP (digital signal processor), GPU (graphics processing unit), ASIC (application specific integrated circuit), PLD (programmable logic device), or FPGA (field-programmable gate array). Alternatively, the processor 11 is a combination of several of these. Furthermore, the processor 11 may be a combination of these with hardware accelerators, etc.

[0031] The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. The processor 11 performs various processes according to the program recorded in ROM 12 or the program loaded into RAM 13. Part or all of the program may be incorporated into the circuitry of the processor 11.

[0032] Bus 14 is also connected to input / output interface 15. An input / output unit 16, a communication means 17, and a storage unit 18 are connected to the input / output interface 15.

[0033] The input / output unit 16 is electrically connected to the input / output interface 15 by wire or wireless connection. The input / output unit 16 consists of, for example, an input unit such as a keyboard and mouse, and an output unit such as a display for displaying captured images and a speaker for amplifying sound. The input / output unit 16 may also have an integrated configuration of display and input functions, such as a touch panel.

[0034] The communication means 17 is a device for the processor 11 to communicate with the 3D laser scanning device 2, the metal temperature measuring device 3, and other devices via a network such as the Internet (not shown), according to the embodiment of the present invention. The storage unit 18 is a storage device such as a hard disk drive (HDD) or a solid-state drive (SSD) that stores 3D laser scanning results, metal temperature evaluation results, clinker evaluation results, etc.

[0035] The hardware configuration shown in Figure 2 is merely an example and is not limited to this configuration. In addition to being composed of various processing units such as single processors, multi-processors, and multi-core processors, a combination of these various processing units and processing circuits such as ASICs (Application Specific Integrated Circuits) and FPGAs (Field-Programmable Gate Arrays) may be adopted to realize a functional configuration as a processor. The information processing unit 1 does not have a storage unit 18, but a configuration in which a storage unit 18 is provided separately may also be adopted.

[0036] Figure 3 is a block diagram showing the functional configuration of the information processing device 1 according to this embodiment. As shown in Figure 3, the information processing device 1 has the following functional configurations: a laser scan result receiving unit 101, a metal temperature receiving unit 102, a first clinker evaluation unit 103, a second clinker evaluation unit 104, a clinker determination unit 105, an alarm transmission unit 106, and a soot blower activation unit 107, all of which are realized by the processor 11 shown in Figure 2.

[0037] The functions of each functional part in Figure 3 will be explained with reference to Figures 1, 2, and 4 through 6.

[0038] The laser scan result receiving unit 101 receives the results of the 3D laser scanning device 2 scanning the surface of the heating pipes 6 inside the boiler 5.

[0039] Figure 4 is a schematic diagram showing how the 3D laser scanning device 2 is installed on the boiler wall 52 of the boiler room 51. Figure 4 is a cross-sectional view of the boiler room 51, cut in the direction in which the heating pipes 6 extend. Inside the boiler room 51, the heating pipes 6 are arranged extending vertically. Although only a part of them is shown in Figure 4, the heating pipes 6 are shown in a perspective view to aid understanding. The heating pipes 6 are shown schematically in Figure 4, but they are components through which water or steam flows. Hot air 53 is introduced into the boiler room 51, heating the water in the heating pipes 6 and converting it into steam.

[0040] In coal-fired power plants, if the coal ash generated during coal combustion has high adhesion properties, coal ash grows on the heating pipes 6 in the boiler room 51 and on the walls of the boiler room 51. This is clinker 7. To detect the clinker 7 adhering to the heating pipes 6 in the boiler room 51, a 3D laser scanning device 2 is installed adjacent to a spherical insulating glass 54 provided on the boiler wall 52. Cooling air is blown from a blower 55 between the insulating glass 54 and the boiler room 51, forming an air curtain 56. The air curtain 56 has two effects: a cooling effect and preventing coal ash contained in the boiler exhaust gas from adhering to the insulating glass 54. The air curtain 56 prevents damage to the insulating glass 54, prevents fouling of the insulating glass 54, and ensures visibility or laser transmission.

[0041] The 3D laser scanning device 2 can change the direction of laser beam emission by swiping up, down, left, and right, and performs a laser scan 23 on clinker 7 attached to components of the boiler room 51, such as the heating pipes 6. Since an air curtain 56 is provided, the laser scan 23 can be performed even while the boiler 5 is in operation, and the 3D laser scanning device 2 is operational.

[0042] The 3D laser scanning device 2 measures distance, for example, using a phase difference distance method. The emitted laser light is irradiated onto the heating pipe 6, which is the object to be measured, through a lens, and the reflected light is focused by the lens and received by the light receiving unit. There is a time elapsed according to the distance, and a phase difference occurs between the emitted wavelength and the received wavelength. Since the phase difference differs when the distance to the object to be measured is different, the distance can be measured by calculating this phase difference.

[0043] Returning to Figure 3, the laser scan result receiving unit 101 receives the laser scan results performed when the heating pipe 6 is in good condition, either before the boiler 5 is in operation or after the clinker 7 has been removed by a steam spray type soot blower (described later), and stores them in the storage unit 18 beforehand. The first clinker evaluation unit 103 directly measures and evaluates the clinker 7 adhering to the surface of the heating pipe 6 based on the difference between the laser scan results received by the laser scan result receiving unit 101 and the laser scan results of the heating pipe 6 in good condition that are stored beforehand. The difference between the laser scan results received by the laser scan result receiving unit 101 and the laser scan results of the heating pipe 6 in good condition that are stored beforehand corresponds, for example, to the difference between the volume of the heating pipe 6 in good condition obtained by 3D laser scanning and the volume of the heating pipe 6 that may have clinker 7 adhering to it, obtained by 3D laser scanning.

[0044] The first clinker evaluation unit 103 can also overlay the measurement results onto a layout diagram of the boiler 5's heating pipes 6 displayed on a display screen, capturing the size and shape of the clinker 7 and displaying the adhesion results. This allows for a three-dimensional understanding of the adhesion state. The adhesion state, including the location, size, shape, and amount of clinker adhesion, is directly measured.

[0045] By capturing the size and shape of the clinker 7 and displaying it on the screen, anyone can accurately visually confirm the degree of contamination of the heating pipe 6.

[0046] As shown in Figure 5, the 3D laser scanning device 2 may include, for example, a first 3D laser scanning device 2a installed on the side of the boiler 5, and 3D laser scanning devices 2c to 2d installed on the upper wall of the boiler 5. Water or steam flows through the heating pipe 6, and it is connected to other pipes both above and below, but in Figure 5, these connections are omitted and a perspective view including a cross-section is shown for clarity.

[0047] The first 3D laser scanning device 2a scans the first 3D scanning area 21a. The third 3D laser scanning device 2c scans the third 3D scanning area 21c. The fourth 3D laser scanning device 2d scans the fourth 3D scanning area 21d.

[0048] Multiple 3D laser scanning devices 2 are installed around the boiler 5. 3D laser scanning is performed from multiple directions to cover the heating pipes 6 inside the boiler 5.

[0049] However, it is impossible to adequately scan the inside of the assembled heating pipes 6. In areas not exposed to the surface side of the 3D laser scanning device 2, there are areas 22 where laser scanning 23 is not possible, making 3D scanning difficult.

[0050] In particular, a metal temperature measuring device 3 is placed in the 3D scanning difficult region 22. As shown in Figure 5, a metal temperature measuring device 3e is placed in the 3D scanning difficult region 22. Metal temperature measuring devices 3a, 3c, and 3d may also be installed in the 3D scanning regions 21a, 21c, and 21d, respectively. Multiple metal temperature measuring devices 3 are placed. When distinguishing between them, they are denoted as 3a, 3c, etc. Since they have similar functions, when no distinction is made, they are denoted as metal temperature measuring device 3.

[0051] The scanning function primarily measures the surface shape of the heating pipe 6 and cannot measure the interior; therefore, the measurement of the metal temperature compensates for this limitation. The metal temperature measuring device 3 measures the temperature of the heating pipe 6. The metal temperature measuring device 3 is, for example, a thermometer in which a thermocouple is installed on the cross-section of the metal tube that makes up the heating pipe 6, and measures the temperature of the part of the heating pipe 6 that is in contact with the water or steam flowing through the heating pipe 6. The metal temperature measuring device 3 measures and monitors the temperature, including localized heating of the heating pipe 6. When clinker 7 adheres to the heat transfer surface of the heating pipe 6, heat exchange between the exhaust gas and the boiler water flowing inside the heating pipe 6 is hindered, resulting in a decrease in the metal temperature.

[0052] The metal temperature receiving unit 102 receives the metal temperature from the metal temperature measuring device 3. The second clinker evaluation unit 104 uses the temperature of the boiler room 51 as a reference and estimates the amount of clinker 7 deposited based on the decrease in the metal temperature of the heating pipe 6 received by the metal temperature receiving unit 102 during clinker evaluation, compared to the metal temperature of the heating pipe 6 when it is in good condition, which is stored in advance.

[0053] The clinker determination unit 105 determines the integrity of the heating pipe 6 based on the evaluation results of the first clinker evaluation unit 103 and the evaluation results of the second clinker evaluation unit 104.

[0054] The clinker determination unit 105 determines that the integrity of the boiler 5 may have been compromised due to the adhesion of clinker 7 to the heating pipe 6 if the difference between the measured 3D scan result and the previously measured 3D scan result under normal conditions, as evaluated by the first clinker evaluation unit 103, exceeds a pre-stored threshold.

[0055] For example, the first clinker evaluation unit 103 determines the estimated thickness of the clinker 7 from the difference between the measured 3D scan result and the previously measured 3D scan result when the boiler is healthy. If that thickness exceeds, for example, a threshold of 60 mm, it is determined that the health of the boiler 5 may have been compromised.

[0056] The clinker determination unit 105 determines that if the metal temperature of the heating pipe 6 evaluated by the second clinker evaluation unit 104 drops below a pre-stored value, there is a possibility that the integrity of the boiler 5 has been compromised due to the adhesion of clinker 7 to the heating pipe 6 on which the metal temperature measuring device 3 is installed.

[0057] For example, the second clinker evaluation unit 104 calculates the difference between the measured temperature of the heating pipe 6 and the previously measured temperature of the heating pipe 6 when it is healthy. If the temperature drop exceeds, for example, a threshold of 100°C, it is determined that the health of the boiler 5 may have been compromised.

[0058] The clinker determination unit 105 determines that the integrity of the boiler 5 has been compromised due to the adhesion of clinker 7 to the heating pipe 6 if the difference between the measured 3D scan result and the previously measured 3D scan result under normal conditions, as evaluated by the first clinker evaluation unit 103, exceeds a pre-stored threshold, and the metal temperature evaluated by the second clinker evaluation unit 104 drops below a pre-stored value.

[0059] For example, the first clinker evaluation unit 103 determines the estimated thickness of the clinker 7 from the difference between the measured 3D scan result and the previously measured 3D scan result when the boiler is healthy. If this thickness exceeds, for example, a threshold of 60 mm, it is determined that the health of the boiler 5 may have been compromised. Furthermore, for example, the second clinker evaluation unit 104 determines the difference between the measured temperature of the heating pipe 6 and the previously measured temperature of the heating pipe 6 when the boiler is healthy. If this temperature drop exceeds, for example, a threshold of 100 degrees Celsius, it is determined that the health of the boiler 5 may have been compromised. If both of these determinations are made simultaneously, it is determined that the health of the boiler 5 has been compromised.

[0060] By comparing the clinker adhesion results scanned with the 3D laser scanning device 2 with the decreasing trend of the metal temperature of the heating pipe 6, it becomes possible to determine the extent and degree of clinker adhesion with greater accuracy based on these two physical elements: the clinker adhesion image and the decrease in metal temperature.

[0061] Returning to Figure 3, the alarm transmission unit 106 transmits a warning that the integrity of the boiler 5 may have been compromised, or an alarm that the integrity of the boiler 5 has been compromised, based on the determination made by the clinker determination unit 105.

[0062] The boiler 5 is equipped with a steam spray type soot blower, for example, which blows steam onto components in the boiler room 51, such as the heating pipes 6, to remove clinker 7. Based on a warning or alarm from the alarm signaling unit 106, the soot blower activation unit 107 activates the soot blower activation circuit. This enables more effective clinker removal and contributes to maintaining boiler efficiency.

[0063] The effects of implementing the soot blower include the recovery of the heat absorption rate of the heating pipe 6, stabilization of steam temperature control by improving gas flow, and stabilization of boiler combustion by correcting imbalances in the oxygen concentration of the boiler exhaust gas.

[0064] Generally, the automatic start circuit of a soot blower uses the enthalpy of the water flowing into the boiler 5 or the steam generated in the boiler to predict the degree of contamination and start the soot blower. By incorporating warnings and alarms from the alarm signaling unit 106 into this automatic circuit and performing detailed operational management, it is possible to avoid premature clinker removal and imbalances in heat absorption by the clinker 7.

[0065] Figure 6 illustrates the process from evaluation to removal of clinker 7 adhering to the boiler 5.

[0066] When the process starts, the laser scan result receiving unit 101, as part of the normal 3D scan result acquisition process, has the 3D laser scanning device 2 3D scan the heating pipe 6 of the boiler 5 when it is healthy and free of clinker 7, receives the scan result, and stores the result in the storage unit 18 (step S11). Next, the metal temperature receiving unit 102, for the boiler 5 when it is healthy and free of clinker 7, receives the measured temperature result from the metal temperature measuring device 3 and stores the result in the storage unit 18 (step S12). After a predetermined time has elapsed as part of the predetermined time waiting process (step S13), the laser scan result receiving unit 101 has the 3D laser scanning device 2 3D scan the heating pipe 6 of the boiler 5, receives the scan result, and stores the result in the storage unit 18 (step S11). Next, the metal temperature receiving unit 102, for the boiler 5, receives the measured temperature result from the metal temperature measuring device 3 and stores the result in the storage unit 18 (step S12).

[0067] As part of the clinker determination process, the first clinker evaluation unit 103 first extracts from the storage unit 18 the laser scan results of the 3D laser scanning device 2 on the heating pipe 6 in the boiler 5 and the laser scan results of the heating pipe 6 in a healthy state that have been stored in advance, and evaluates the clinker 7 adhering to the surface of the heating pipe 6 from the difference between these two results. Furthermore, as part of the clinker determination process, the second clinker evaluation unit 104 evaluates the clinker 7 from the decrease in metal temperature received by the metal temperature receiving unit 102 compared to the metal temperature in a healthy state that has been stored in advance (step S16).

[0068] The clinker determination unit 105, as part of the clinker determination process, returns to step S13 if both the evaluation by the first clinker evaluation unit 103 and the evaluation by the second clinker evaluation unit 104 are normal (step S16: no abnormalities).

[0069] If the clinker determination unit 105 determines that there is an abnormality in either the evaluation of the first clinker evaluation unit 103 or the evaluation of the second clinker evaluation unit 104, it determines that the integrity of the boiler 5 may have been impaired due to the adhesion of clinker 7 (step S16: abnormality in only one), and proceeds to the clinker determination unit additional determination process (step S17). As part of the additional determination process, the alarm issuing unit 106 issues a warning, and the clinker determination unit 105, as part of the additional determination process, acquires information about the adhesion of clinker 7 in the area surrounding the area where the warning was issued.

[0070] The clinker determination unit 105 takes into account the condition of the surrounding area and, if it determines that there is no abnormality associated with the adhesion of clinker 7, returns the process to step S13. For example, if it is determined that there is no abnormality associated with the adhesion of clinker 7 in all of the surrounding area, the clinker determination unit 105 determines that there is no abnormality in the area to be determined.

[0071] In the clinker determination process of step S16, if the clinker determination unit 105 determines that there is an abnormality in both the evaluation of the first clinker evaluation unit 103 and the evaluation of the second clinker evaluation unit 104 (step S16: abnormality in both), or if it determines that there is an abnormality in the additional determination process of step S17 (step S17: abnormality present), the process proceeds to the soot blower startup process (step S18).

[0072] As part of the soot blower startup process, the soot blower startup unit 107 activates the soot blower startup circuit.

[0073] If monitoring is to continue (Step S19: Yes), return to Step S13. If monitoring is not to continue (Step S19: No), monitoring ends (Step END).

[0074] The above description mainly focused on the clinker adhesion evaluation system 100. The information processing device 1 of the clinker adhesion evaluation system 100 can be used independently. Furthermore, it is possible to use a clinker adhesion evaluation method that follows the same steps as those performed by a program that causes a computer to execute the functions of the information processing device 1. [Explanation of symbols]

[0075] 1. Information Processing Device 2 3D laser scanning device 3. Metal temperature measuring device 4 Wireless Transmitter / Receiver 5 Boiler 6 Heating piping 7 Klinka 8. Laser light 100 Clinker Adhesion Evaluation System 101 Laser Scan Result Reception Department 102 Metal temperature receiving section 103 First Clinker Evaluation Department 104 Second Clinker Evaluation Department 105 Clinker detection unit

Claims

1. A 3D laser scanning device installed to scan the heating pipes of a boiler, A metal temperature measuring device provided in the heating pipe of the boiler, Information processing device and It has, The 3D laser scanning device is installed adjacent to a spherical insulating glass panel provided on the boiler wall, and cooling air is blown between the insulating glass panel and the boiler, forming an air curtain. The aforementioned information processing device is A laser scan result receiving unit that receives the laser scan results of the 3D laser scanning device for the heating pipe in the boiler, A first clinker evaluation unit evaluates the clinker adhering to the surface of the heating pipe based on the difference between the laser scan result received by the laser scan result receiving unit and the laser scan result of the heating pipe when it is in good condition, which is stored in advance. A metal temperature receiving unit that receives the metal temperature measured by the aforementioned metal temperature measuring device, A second clinker evaluation unit evaluates the clinker based on the decrease in the metal temperature received by the metal temperature receiving unit compared to the metal temperature under healthy conditions which is stored in advance. The system includes a clinker determination unit that determines the integrity of the heating pipe based on the evaluation results of the first clinker evaluation unit and the evaluation results of the second clinker evaluation unit. Clinker adhesion evaluation system.

2. The difference is based on the volume of the heating pipe obtained based on the shape obtained by the 3D laser scanning device. The clinker adhesion evaluation system according to claim 1.

3. If the difference evaluated by the first clinker evaluation unit exceeds a pre-stored threshold, the clinker determination unit determines that the integrity of the boiler may have been compromised due to the adhesion of clinker to the heating pipe. A clinker adhesion evaluation system according to claim 1 or claim 2.

4. If the metal temperature evaluated by the second clinker evaluation unit falls below a pre-stored value, the clinker determination unit determines that the integrity of the boiler may have been compromised due to the adhesion of clinker to the heating pipe on which the metal temperature measuring device is installed. A clinker adhesion evaluation system according to claim 1 or claim 2.

5. If the difference evaluated by the first clinker evaluation unit exceeds a pre-stored threshold, and the metal temperature evaluated by the second clinker evaluation unit falls below a pre-stored value, the clinker determination unit determines that the integrity of the boiler has been compromised due to the adhesion of clinker to the heating pipe. A clinker adhesion evaluation system according to claim 1 or claim 2.

6. The 3D laser scanning device performs laser scanning of the heating pipes in the boiler from multiple directions. A clinker adhesion evaluation system according to any one of claims 1 to 5.

7. The metal temperature measuring device is installed in the heating pipe where the laser beam of the 3D laser scanning device does not reach. A clinker adhesion evaluation system according to any one of claims 1 to 6.

8. A laser scan result receiving unit that receives the laser scan results of a 3D laser scanning device for heating pipes in a boiler, A first clinker evaluation unit evaluates the clinker adhering to the surface of the heating pipe based on the difference between the laser scan result received by the laser scan result receiving unit and a pre-stored laser scan result for the heating pipe when it is in good condition. A metal temperature receiving section that receives the metal temperature measured by a metal temperature measuring device, A second clinker evaluation unit evaluates the clinker based on the decrease in the metal temperature received by the metal temperature receiving unit compared to the metal temperature under healthy conditions which is stored in advance. The system includes a clinker determination unit that determines the integrity of the heating pipe based on the evaluation results of the first clinker evaluation unit and the evaluation results of the second clinker evaluation unit. The 3D laser scanning device is installed adjacent to a spherical insulating glass provided in the boiler wall, and cooling air is blown between the insulating glass and the boiler, forming an air curtain. Information processing device.

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