Boiler fire observation hole decoking method, device and system, electronic equipment and storage medium

Abstract

The embodiment of the invention discloses a boiler fire observation hole decoking method, device and system, electronic equipment and a storage medium. The method comprises the following steps that image information of a boiler fire observation hole is obtained; the image information comprises a plurality of target pictures, and the plurality of target pictures are pictures of the boiler fire observation hole shot from different shooting angles. According to the multiple target pictures in the image information, whether the boiler fire observation hole needs to be decoked is judged, if yes, a decoking unit is controlled to decoke the boiler fire observation hole, and if not, the boiler fire observation hole is not decoked. According to the method, automatic decoking can be achieved, the accuracy is high, and then the personal safety of operators can be ensured.

Description

Technical Field

[0001] The embodiments of the present invention specifically relate to a boiler fire-viewing hole decoking method, device, system, electronic equipment and storage medium. Background Art

[0002] Currently, coal-fired boilers are prone to coking and fouling, particularly the boiler's flame observation holes, which are easily clogged by coke. These holes are primarily used to observe combustion conditions within the boiler furnace. However, if these holes are blocked, operators are unable to directly observe the flame within the boiler furnace, making it difficult to detect combustion anomalies such as unstable or extinguished flames. This increases the risk of furnace explosion or fire extinguishing.

[0003] Therefore, during boiler operation, operators need to promptly remove coke from the boiler's fire-viewing hole. Traditionally, operators visually inspect whether decoking is necessary and manually remove the coke from the fire-viewing hole through mechanical impact.

[0004] However, this decoking method poses a significant risk to personnel safety, especially as operators are easily burned by the high temperature in the furnace while observing the fire viewing hole and manually decoking. Summary of the Invention

[0005] The technical problem to be solved by the embodiments of the present invention is to address the above-mentioned deficiencies in the prior art and provide a boiler fire-viewing hole decoking method, device, system, electronic equipment and storage medium. The boiler fire-viewing hole decoking method can realize automated decoking.

[0006] According to an embodiment of the first aspect of the present invention, a method for decoking a boiler fire-viewing hole is provided, the method comprising the following steps:

[0007] Get the image information of the boiler fire viewing hole,

[0008] The image information includes: multiple target images, which are images of the boiler fire viewing hole taken from different shooting angles;

[0009] Determine whether the boiler fire-viewing hole needs to be decoked based on multiple target images in the image information:

[0010] If so, the decoking unit is controlled to decoke the boiler fire viewing hole.

[0011] The boiler fire-viewing hole decoking method in an embodiment of the present invention obtains multiple target images by taking pictures of the boiler fire-viewing hole from different shooting angles, and judges whether the boiler fire-viewing hole needs to be decoked based on the target images. In this way, the automatic judgment of the boiler fire-viewing hole decoking can be achieved, and the staff no longer needs to observe with the human eye whether decoking is needed; moreover, by observing the boiler fire-viewing hole from multiple different angles, the accuracy of computer vision judgment can also be improved to avoid misjudgment. Then, if it is determined that decoking is necessary, the decoking unit is controlled to decoke the boiler fire-viewing hole. By automatically controlling the decoking unit to decoke the boiler fire-viewing hole, the operator no longer needs to manually remove the coke at the fire-viewing hole by mechanical impact. In summary, this method can achieve automatic decoking with high accuracy, thereby ensuring the personal safety of the operator.

[0012] Optionally, based on multiple target images in the image information, determine whether the boiler fire viewing hole needs to be decoked, specifically:

[0013] It is determined whether the shadow area ratio of the boiler fire viewing hole in each target image in the image information reaches a preset threshold. If so, it is determined that the boiler fire viewing hole needs to be decoked.

[0014] Optionally, the method further includes:

[0015] After the decoking unit completes the first decoking of the boiler fire-viewing hole, it obtains the image information of the boiler fire-viewing hole again and re-determines whether the boiler fire-viewing hole needs to be decoked again based on the image information:

[0016] If so, the decoking unit is controlled to decoke the boiler again; if not, the decoking process ends.

[0017] According to an embodiment of the second aspect of the present invention, a boiler fire-viewing hole decoking device is provided, which is used to implement the above-mentioned boiler fire-viewing hole decoking method, including: a monitoring unit, a control unit and a decoking unit; the monitoring unit is facing the boiler fire-viewing hole and is used to obtain image information of the boiler fire-viewing hole; the control unit is electrically connected to the monitoring unit and is used to determine whether the boiler fire-viewing hole needs to be decoked based on the image information of the boiler fire-viewing hole obtained by the monitoring unit, and if so, sends a start signal; the decoking unit includes a scraper drill bit and a driving device, the decoking unit includes a scraper drill bit and a driving device, the central axis of the scraper drill bit and the central axis of the boiler fire-viewing hole are on the same extension line, and the tip of the scraper drill bit faces the boiler fire-viewing hole, the driving end of the driving device is connected to the scraper drill bit, and the driving device is electrically connected to the control unit, and the driving device is used to drive the scraper drill bit to rotate around its own axis and drive the scraper drill bit to advance along the central axis of the boiler fire-viewing hole when receiving the start signal sent by the control unit, thereby decoking the boiler fire-viewing hole.

[0018] Optionally, the boiler fire viewing hole decoking device also includes a mounting portion, which is annular and spaced apart from the boiler fire viewing hole. The central axis of the mounting portion and the central axis of the boiler fire viewing hole are on the same extension line. The monitoring unit includes multiple cameras, which are arranged circumferentially along the mounting portion. The multiple cameras are all facing the boiler fire viewing hole. The multiple cameras take pictures of the boiler fire viewing hole from different shooting angles, thereby obtaining image information of the boiler fire viewing hole.

[0019] Optionally, the scraper drill bit includes a blade and a blade holder, the blade holder is connected to the driving end of the driving device, one end of the blade is a tip, and the other end is a connecting end, the tip of the blade faces the boiler fire viewing hole, and the connecting end of the blade is connected to the blade holder. There are multiple blades, and the multiple blades are arranged around the central axis of the blade holder.

[0020] Optionally, an air flow groove is provided between two adjacent blades, and a plurality of compressed air nozzles are provided on the blade holder. The number of compressed air nozzles is the same as the number of air flow grooves, and each compressed air nozzle corresponds to an air flow groove. The compressed air nozzle is used to spray air into the air flow groove to remove the coke chips in the air flow groove.

[0021] Optionally, the boiler fire-viewing hole decoking device further includes: a compressed air unit, the compressed air unit being connected to the compressed air nozzle, and the compressed air unit being used to provide compressed air to the compressed air nozzle.

[0022] According to an embodiment of the third aspect of the present invention, a coal-fired power plant boiler system is provided, comprising: a boiler and the above-mentioned boiler fire-viewing hole decoking device; the boiler is used for coal combustion, the boiler is provided with a fire-viewing hole, and the boiler fire-viewing hole decoking device is used for decoking the boiler fire-viewing hole.

[0023] According to an embodiment of the fourth aspect of the present invention, there is provided an electronic device comprising a memory and a processor, wherein a computer program is stored in the memory, and when the processor runs the computer program stored in the memory, the processor executes the above-mentioned boiler fire-viewing hole decoking method.

[0024] According to an embodiment of the fifth aspect of the present invention, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the processor executes the above-mentioned boiler fire-viewing hole decoking method. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic diagram of the structure of a boiler fire-viewing hole decoking device in some embodiments of the present invention;

[0026] Figure 2a is a front view of a drag drill bit in some embodiments of the present invention;

[0027] Figure 2bis a schematic cross-sectional view of a drag drill bit in some embodiments of the present invention.

[0028] In the figure: 1. Monitoring unit; 11. Camera; 2. Mounting part; 3. Decoking unit; 31. Scraper drill bit; 311. Blade; 312. Blade holder; 313. Compressed air nozzle; 32. Driving device; 321. First motor; 322. Threaded rod; 323. Threaded block; 324. Fixing part; 33. Rotating gun body; 4. Control unit; 5. Equipment fixing unit; 6. Compressed air unit; 7. Pipeline; 8. Transmission module. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by ordinary technicians in this field based on the embodiments of the present invention without creative work are within the scope of the embodiments of the present invention.

[0030] In the description of the embodiments of the present invention, it should be noted that the terms "upper", "lower" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience and simplification of the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the embodiments of the present invention.

[0031] In the description of the embodiments of the present invention, the terms "first", "second" and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0032] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connect," "dispose," "install," "fix," etc. should be understood in a broad sense. For example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a direct connection, an indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0033] It should be noted that coal combustion can easily lead to coking and contamination in boilers, which can severely affect unplanned shutdowns of the unit. Therefore, timely decoking of the boiler furnace, large screen, and other parts is necessary to ensure boiler production efficiency and safety. Common decoking methods include sootblower decoking, load reduction coking, grinding and coking, changing coal type decoking, and manual coking. Manual coking is mainly performed in areas such as the boiler's fire viewing hole and the bottom of the cold ash hopper, which poses a significant risk to personnel safety.

[0034] The existing boiler fire-viewing hole decoking device mainly works on the principle of mechanical impact, which has the disadvantages of incomplete coke cleaning and low working efficiency for larger and harder coke blocks. In addition, the coke blocks cleaned by impact are prone to be large and hard, which fall from a high place and cause a greater impact on the boiler cold ash hopper.

[0035] Furthermore, traditional methods such as manual tamping and mechanical decoking suffer from low efficiency, high risks, complex operation, and potential damage to the boiler's heating surfaces. There is an urgent need to develop an intelligent, efficient boiler decoking and ash cleaning device to ensure stable boiler production and personnel safety.

[0036] Example 1

[0037] The embodiment of the present invention discloses a method for decoking a boiler fire-viewing hole, comprising the following steps:

[0038] The image information of the boiler fire viewing hole is obtained. The image information of the boiler fire viewing hole includes: multiple target images, and the multiple target images are images of the boiler fire viewing hole taken from different shooting angles.

[0039] Based on multiple target images in the image information, determine whether the boiler fire viewing hole needs to be decoked.

[0040] If so, the decoking unit 3 is controlled to decoke the boiler fire viewing hole; if not, the boiler fire viewing hole is not decoked.

[0041] It should be noted that this method can be implemented using a computer program.

[0042] The boiler fire-viewing hole decoking method of this embodiment captures multiple target images of the boiler fire-viewing hole from different angles. The target images are then used to determine whether the boiler fire-viewing hole requires decoking. This automates the process of determining whether decoking is necessary, eliminating the need for human visual inspection. Furthermore, by observing the boiler fire-viewing hole from multiple angles, the accuracy of computer vision judgments is improved, preventing misjudgments. If decoking is determined to be necessary, decoking unit 3 is controlled to decoke the boiler fire-viewing hole. By automatically controlling decoking unit 3 to decoke the boiler fire-viewing hole, operators no longer need to manually remove coke from the fire-viewing hole through mechanical impact.

[0043] In summary, this method can realize automated decoking with high accuracy, thereby ensuring the personal safety of operators.

[0044] In this embodiment, whether the boiler fire viewing hole needs to be decoked is determined based on multiple target images in the image information, specifically:

[0045] It is determined whether the shadow area ratio of the boiler fire viewing hole in each target image in the image information reaches a preset threshold. If so, it is determined that the boiler fire viewing hole needs to be decoked.

[0046] It's important to note that the coked area in the boiler's flame-viewing hole blocks the bright light from the furnace flame. Therefore, the lower-brightness areas (shaded areas) in the target image correspond to the actual coked areas in the boiler's flame-viewing hole. The unobstructed areas of the boiler's flame-viewing hole, on the other hand, allow the bright light from the furnace flame to pass through, resulting in a higher brightness in the target image. By calculating the percentage of the shadowed area of the boiler's flame-viewing hole in the target image, we can determine the hole's blockage status.

[0047] Furthermore, before determining whether the shadow area ratio of the boiler fire viewing hole in the target image reaches a preset threshold, the target image must be preprocessed to obtain a grayscale image. This preprocessing can be performed using existing image processing software, such as OpenCV or Visual Pro. The shadow area ratio is then calculated based on the grayscale image. Specifically, the shadow area ratio in the grayscale image can also be calculated using existing software, such as OpenCV.

[0048] In this embodiment, the preset threshold value ranges from 50% to 100%. For example, the preset threshold value may be 50%, that is, when the shadow area of the boiler fire viewing hole accounts for greater than or equal to 50%, it is determined that the boiler fire viewing hole needs to be decoked.

[0049] As another example, the preset threshold may be 80%, that is, when the shadow area of the boiler fire viewing hole accounts for greater than or equal to 80%, it is determined that the boiler fire viewing hole needs to be decoked.

[0050] For another example, the primary function of a boiler fire-viewing hole is to facilitate observation of conditions within the furnace. During the coal-fired power plant's boiler combustion process, operators need to periodically observe the combustion conditions within the furnace through the boiler fire-viewing hole. Therefore, ensuring the boiler fire-viewing hole is unobstructed only when it is needed suffices. Therefore, in some embodiments, the time interval between two observations of the combustion conditions within the furnace through the boiler fire-viewing hole is relatively long, and the preset threshold value can reach 100%. When the shadow area of the boiler fire-viewing hole reaches 100%, indicating that the boiler fire-viewing hole is completely blocked by coke, it is determined that the boiler fire-viewing hole needs to be decoked.

[0051] A target image is determined to be of the first category. That is, based on the target image, it is determined that the boiler fire viewing hole needs to be decoked.

[0052] Since errors may occur in the acquisition process of a single target image, combining multiple target images to make a judgment can more accurately determine whether the boiler fire viewing hole needs to be decoked.

[0053] After the decoking unit 3 completes the first decoking of the boiler fire viewing hole, coke residue may still remain in the boiler fire viewing hole, causing the boiler fire viewing hole to be unable to meet the requirements of observing the flame combustion situation in the furnace. Therefore, in some embodiments, the method further includes:

[0054] After the decoking unit 3 completes one decoking of the boiler fire viewing hole, it obtains the image information of the boiler fire viewing hole again, and re-determines whether the boiler fire viewing hole needs to be decoked again based on the image information: if so, the decoking unit 3 is controlled to decoke the boiler again; if not, the decoking process ends.

[0055] Among them, the image information of the boiler fire viewing hole was obtained again, also including a target picture.

[0056] The above steps: Based on the image information, re-determine whether the boiler fire-viewing hole needs to be decoked again, which can be achieved through the following steps:

[0057] When the shadow area ratio of the boiler fire viewing hole in the target image reaches a preset threshold, the target image is determined to be of the first category; otherwise, the target image is determined to be of the second category.

[0058] When all target images are determined to be of the first category, it is determined that the boiler fire viewing hole needs to be decoked; otherwise, it is determined that the boiler fire viewing hole does not need to be decoked.

[0059] In other words, when the decoking unit 3 completes one rotation forward and backward operation, the furnace flame can be observed from the monitoring module, and the operation can be stopped. The monitoring unit 1 needs to observe and inspect after the rotating gun body 33 has been rotated and retreated.

[0060] It can be seen that the process of re-determining whether the boiler fire-viewing hole needs to be decoked again is the same as the process of decoking for the first time, and will not be repeated here.

[0061] In summary, the boiler fire-viewing hole decoking method in this embodiment has the following advantages:

[0062] (1) A visual solution is used to determine whether the boiler fire-viewing hole needs to be decoked. This can be done completely automatically without operator intervention.

[0063] (2) Comprehensive judgment is made based on target images taken from multiple shooting angles, which can greatly improve the accuracy of judgment.

[0064] (3) After the judgment is completed, the decoking unit 3 can be automatically controlled to complete the automated decoking without the need for manual mechanical impact by the operator, thereby ensuring the safety of the workers.

[0065] (4) After the decoking unit 3 completes the first decoking, it can also automatically perform the second decoking, thereby ensuring the decoking effect of the boiler fire viewing hole.

[0066] Example 2

[0067] See also Figure 1 、 Figure 2a and Figure 2b The present invention also discloses a boiler fire-viewing hole decoking device, which is used to implement the boiler fire-viewing hole decoking method in Example 1. The device includes: a monitoring unit 1, a control unit 4, and a decoking unit 3.

[0068] The monitoring unit 1 is oriented toward the boiler fire viewing hole and is configured to obtain image information of the boiler fire viewing hole. The control unit 4 is electrically connected to the monitoring unit 1 and is configured to determine whether the boiler fire viewing hole needs to be decoked based on the image information of the boiler fire viewing hole obtained by the monitoring unit 1. If so, it issues a start signal. The decoking unit 3 includes a scraper drill bit 31 and a drive device 32. The decoking unit 3 includes a scraper drill bit 31 and a drive device 32. The central axis of the scraper drill bit 31 is coextensive with the central axis of the boiler fire viewing hole, and the tip of the scraper drill bit 31 faces the boiler fire viewing hole. The drive end of the drive device 32 is connected to the scraper drill bit 31, and the drive device 32 is electrically connected to the control unit 4. Upon receiving a start signal from the control unit 4, the drive device 32 is configured to drive the scraper drill bit 31 to rotate about its own axis and drive the scraper drill bit 31 to advance along the central axis of the boiler fire viewing hole, thereby decoking the boiler fire viewing hole.

[0069] It should be noted that the monitoring unit 1 in the present boiler fire-viewing hole decoking device obtains image information of the boiler fire-viewing hole. This enables automated judgment of boiler fire-viewing hole decoking, eliminating the need for staff to visually observe whether decoking is required. The control unit 4 analyzes the image information and, based on the analysis results, issues a start command to the drive device 32 of the decoking unit 3. In accordance with the start command, the drive device 32 drives the scraper drill bit 31 to rotate around its own axis and drives the scraper drill bit 31 to advance along the central axis of the boiler fire-viewing hole, thereby decoking the boiler fire-viewing hole. Compared to the existing mechanical impact method, the advantage of rotating the scraper drill bit 31 to decoke the boiler fire-viewing hole is that it can avoid the generation of large and hard coke blocks, thereby preventing these large and hard coke blocks from falling from a height and causing a large impact and damage to the boiler's cold ash hopper.

[0070] In summary, by adopting this boiler fire-viewing hole decoking device, operators no longer need to manually remove coke from the fire-viewing hole through mechanical impact. This device can achieve automated decoking, thereby ensuring the personal safety of operators.

[0071] See also Figure 1 In this embodiment, the boiler fire viewing hole decoking device further includes a mounting portion 2, which is annular and spaced apart from the boiler fire viewing hole. The central axis of the mounting portion 2 and the central axis of the boiler fire viewing hole are on the same extension line. The monitoring unit 1 includes a plurality of cameras 11, which are arranged circumferentially along the mounting portion 2. The plurality of cameras 11 are all facing the boiler fire viewing hole. The plurality of cameras 11 respectively capture images of the boiler fire viewing hole from different shooting angles, thereby obtaining image information of the boiler fire viewing hole.

[0072] Furthermore, the control unit 4 is further configured to determine whether each target image in the image information belongs to the first or second category: when the shadow area ratio of the boiler fire-viewing hole in the target image reaches a preset threshold, the target image is determined to be in the first category; otherwise, the target image is determined to be in the second category. If all target images are determined to be in the first category, the control unit 4 determines that the boiler fire-viewing hole needs to be decoked and sends a start signal to the drive unit; otherwise, the control unit determines that the boiler fire-viewing hole does not need to be decoked.

[0073] Coked areas in the boiler's flame-viewing hole block the bright light from the furnace flame. Therefore, the lower-brightness areas (shadows) in the target image correspond to the actual coked areas in the boiler's flame-viewing hole. Unblocked areas of the boiler's flame-viewing hole, on the other hand, allow the bright light from the furnace flame to pass through, resulting in higher brightness in the target image. By calculating the percentage of shadowed areas within the boiler's flame-viewing hole in the target image, we can determine the hole's blockage status.

[0074] Since errors may occur in the acquisition process of a single target image, combining multiple target images to make a judgment can more accurately determine whether the boiler fire viewing hole needs to be decoked.

[0075] See also Figure 2a and Figure 2b In this embodiment, the scraper drill bit 31 includes a blade 311 and a blade holder 312. The blade holder 312 is connected to the driving end of the driving device 32. One end of the blade 311 is a tip and the other end is a connecting end. The tip of the blade 311 faces the boiler fire viewing hole. The connecting end of the blade 311 is connected to the blade holder 312. There are multiple blades 311, and the multiple blades 311 are arranged around the central axis of the blade holder 312.

[0076] The outer diameter of the scraper drill bit 31 is adapted to the inner diameter of the boiler fire viewing hole. Specifically, the drill bit size needs to be slightly smaller than the fire viewing hole size to avoid vibration of the gun body during rotation causing equipment deflection.

[0077] Specifically, the scraper drill bit 31 faces the boiler fire-viewing hole. A drive device 32 rotates the scraper drill bit 31 about its own axis and propels it forward along the central axis of the boiler fire-viewing hole. As the scraper drill bit 31 propels forward, its blade 311 scrapes away coke from the boiler fire-viewing hole, thereby decoking the hole. The scraper drill bit 31 on the decoking unit 3 cuts coke chunks, crushing large chunks into smaller ones that fall into the cold ash hopper, minimizing the risk of overly large and heavy coke chunks posing a risk to the cold ash hopper surface.

[0078] Furthermore, an air flow slot is provided between two adjacent blades 311. The blade holder 312 is provided with a plurality of compressed air nozzles 313. The number of compressed air nozzles 313 is the same as the number of air flow slots, and each compressed air nozzle 313 corresponds to an air flow slot. The compressed air nozzles 313 are used to spray air into the air flow slots to remove burnt debris from the air flow slots.

[0079] The boiler fire-viewing hole decoking device further includes: a compressed air unit 6 , which is in communication with the compressed air nozzle 313 and is used to provide compressed air to the compressed air nozzle 313 .

[0080] The compressed air cooling module (i.e., the compressed air unit 6) compresses external air and inputs it into the rotating gun body 33 through the pipe 7. The compressed air is then ejected through the compressed air nozzle 313 on the rotary decoking module, thereby continuously reducing the overheating problem of the scraper drill bit 31 during the decoking process and also clearing the dust and debris in the fire viewing hole.

[0081] The boiler fire-viewing hole decoking device in this embodiment will be further described below:

[0082] The device also includes an equipment fixing module (i.e., equipment fixing unit 5), which secures the intelligent rotary decoking device to the boiler's fire viewing platform. This unit is a telescopic bracket that connects to the intelligent rotary decoking device and secures it to the boiler's fire viewing platform. The bracket can be adjusted to ensure that the outlet of the intelligent rotary decoking device is flush with the boiler's fire viewing platform.

[0083] The intelligent rotary decoking device is connected to the compressed air cooling module (i.e., the compressed air unit 6). The intelligent rotary decoking device includes a rotary decoking module (i.e., the decoking unit 3) and a coke and dust accumulation monitoring module (i.e., the monitoring unit 1). The rotary decoking module (i.e., the decoking unit 3) includes a scraper bit 31. The scraper bit 31 is connected to the outlet of the rotating lance 33. The inlet of the rotating lance 33 is connected to the outlet of the compressed air cooling module via a pipe 7.

[0084] The coke and ash accumulation monitoring module (i.e., the aforementioned monitoring unit 1) is connected to the intelligent analysis module (i.e., the aforementioned control unit 4) via the transmission module 8. The coke and ash accumulation monitoring module transmits the collected image data to the intelligent analysis module via the transmission module 8. The intelligent analysis module interprets and analyzes the image data from the fire viewing hole and issues start / stop commands to the intelligent rotary decoking device. The intelligent analysis module transmits the start / stop commands to the intelligent rotary decoking device, which then performs decoking and ash cleaning operations from the fire viewing hole.

[0085] The rotating gun body 33 is integrally slidably mounted with the intelligent rotating decoking device via a fixing device (i.e., the fixing portion 9).

[0086] The driving device 32 includes a first motor 321 and a second motor (not shown in the figure). The first motor 321 is used to drive the rotating gun body 33 to move along the central axis of the boiler fire-viewing hole, and then drive the scraper drill bit 31 to enter the boiler fire-viewing hole. The second motor is used to drive the scraper drill bit 31 to rotate, thereby cutting the coke blocks in the boiler fire-viewing hole, cutting and crushing the large coke blocks into small coke blocks so that they fall into the cold ash hopper. The output end of the first motor 321 is fixedly connected to a horizontally arranged threaded rod 322. The threaded rod 322 is threadedly connected to the threaded block 323, thereby driving the threaded rotating gun body 33 to move horizontally. The outlet end of the rotating gun body 33 is connected to the rotary decoking module (the scraper drill bit 31), thereby realizing the decoking and ash cleaning operation of the boiler fire-viewing hole.

[0087] The rotary decoking module includes a scraper bit 31 and a compressed air nozzle 313. The scraper bit 31 is made of medium carbon steel. The compressed air nozzle 313 controls the flow of compressed air, cooling the scraper bit 31 and cleaning it.

[0088] Furthermore, the coke accumulation monitoring module in this device records images of coke accumulation at the fire viewing hole and transmits them to the intelligent analysis module via transmission module 8. The intelligent analysis module compiles and analyzes the transmitted signals to determine whether coke has occurred at the fire viewing hole. Based on the analysis results, it issues corresponding instructions to the intelligent decoking device, achieving the goal of automated intelligent start / stop of the device, improving the overall intelligence level of the equipment and reducing the influence of human operation. After the device is started, the motor drives the rotating lance body 33 horizontally via the threaded rod 322 and threaded block 323, propelling the rotary decoking module to rotate the coke blocks near the boiler fire viewing hole. The decoking operation is carried out under the rotating cutting action of the scraper drill bit 31. The compressed air module compresses low-temperature air through pipe 7 into the rotating lance body 33, and then ejects it from the compressed air nozzle 313 on the rotary decoking module to cool and clean the scraper drill bit 31. The present invention has a simple structure and ingenious design, and uses a rotary decoking drill bit to remove hard coke at the boiler fire viewing hole. Intelligence reduces labor costs and ensures the safety of personnel and equipment. In addition, the device is simple and reliable, easy to operate and maintain, and suitable for promotion.

[0089] In summary, this boiler fire-viewing hole decoking device is an intelligent decoking device for coal-fired power plant boiler fire-viewing holes, relating to the field of coal-fired boiler furnace monitoring and cleaning technology. It includes an equipment fixing module, which connects the boiler intelligent rotary decoking device to the boiler platform. This module can secure the intelligent rotary decoking device to the boiler to prevent severe vibration during operation. The outlet of the intelligent rotary decoking device is connected to the boiler fire-viewing hole and includes a rotary decoking module, a compressed air cooling module, a coke accumulation monitoring module, and an intelligent analysis module. The rotary decoking module and the intelligent decoking device are integrally slidably mounted, with a motor-driven gear rotating to enter the fire-viewing hole for decoking. The compressed air cooling module is connected to the rotary decoking module and compresses low-temperature air before it is introduced, thereby reducing the temperature around the rotary decoking module and the fire-viewing hole. The coke accumulation monitoring module is used to detect the degree of coke accumulation at the boiler fire-viewing hole and transmit it to the intelligent analysis module in the form of image data. The intelligent analysis module determines whether to activate the decoking device based on real-time feedback data. This invention enables unmanned intelligent decoking, simplifies operation and maintenance, reduces the safety risks associated with manual operation, and mitigates production safety risks caused by severe coking around boiler fire-viewing holes. The invention can be applied to coal-fired power plant boilers, industrial boilers, and waste incinerators, and is particularly suitable for boilers burning high-alkali coal, demonstrating its broad market application prospects.

[0090] The boiler fire-viewing hole decoking device has the following technical effects:

[0091] 1. This device can intelligently identify whether there is a problem of coking and ash accumulation at the boiler's fire viewing hole throughout the entire process, and selectively start and stop the device based on background analysis, thereby completing the decoking and ash cleaning work at the boiler's fire viewing hole, replacing the labor intensity of manual decoking.

[0092] 2. When decoking and cleaning the boiler fire viewing hole, there is no need for on-site inspection, which avoids the harm of harsh working environment to the health of operators and improves the safety of decoking.

[0093] 3. The rotary decoking device uses a scraper drill bit 31 for cutting and compressed air cooling. On the one hand, it can break large coke blocks into smaller ones, which are blown into the furnace by compressed air, thereby preventing the impact of large coke falling on the cold ash hopper. On the other hand, the compressed air cools the scraper drill bit 31, ensuring the stability of the drill bit.

[0094] Example 3

[0095] This embodiment further explains the working principle of the boiler fire-viewing hole decoking device in Example 2:

[0096] The equipment fixing module is fixed to the boiler platform, and the telescopic bracket between it and the intelligent rotary decoking device is adjusted so that the device is horizontally parallel to and connected to the boiler fire viewing hole. After connecting to the fire viewing hole, the coke accumulation monitoring module begins to monitor the coke accumulation at the boiler fire viewing hole and uploads the captured image data to the back-end computer via the transmission module 8. The intelligent analysis module set in the back-end computer organizes and analyzes the image data. After determining whether there is coke accumulation in the boiler fire viewing hole, it transmits the start-up command to the motor and compressed air module in the intelligent rotary decoking device. After the motor starts, it rotates the threaded rod 322, which drives the threaded block 323 to rotate the rotating gun body 33 in the horizontal direction, pushing the rotary decoking module to rotate closer to the coke block. The scraper drill bit 31 on the rotary decoking module cuts the coke block, cutting and crushing large coke blocks into small coke blocks, which then fall into the cold ash hopper, reducing the risk of excessive coke blocks on the cold ash hopper surface. The compressed air cooling module compresses the external air and inputs it into the rotating gun body 33 through the pipe 7. The compressed air is then ejected through the compressed air nozzle 313 on the rotary decoking module, thereby continuously reducing the overheating problem of the scraper drill bit 31 during the decoking process and also clearing the dust and debris in the fire viewing hole.

[0097] Example 4

[0098] An embodiment of the present invention further discloses a coal-fired power plant boiler system, comprising: a boiler and the boiler fire-viewing hole decoking device of embodiment 3.

[0099] The boiler is used for coal combustion, and is provided with a fire viewing hole. The boiler fire viewing hole decoking device is used for decoking the boiler fire viewing hole.

[0100] The coal-fired power plant boiler system, by adopting the boiler fire-viewing hole decoking device of Example 3, can realize automatic decoking of the boiler fire-viewing hole, thereby greatly improving the decoking efficiency and preventing large and hard coke blocks from falling and damaging the boiler heating surface, thereby improving the safety of the boiler.

[0101] Example 5

[0102] An embodiment of the present invention further discloses an electronic device, including a memory and a processor, wherein a computer program is stored in the memory. When the processor runs the computer program stored in the memory, the processor executes the above-mentioned boiler fire-viewing hole decoking method.

[0103] Specifically, the computer program stored in the memory includes the following program modules:

[0104] The acquisition unit is used to acquire image information of the boiler fire viewing hole, where the image information includes: multiple target pictures, which are pictures of the boiler fire viewing hole taken from different shooting angles.

[0105] The analyzing unit is used to determine whether the boiler fire viewing hole needs to be decoked based on multiple target images in the image information; if so, control the decoking unit to decoke the boiler fire viewing hole.

[0106] In this embodiment, the analysis unit includes: a first processing module and a second processing module. The first processing module is used to respectively determine whether multiple target images in the image information are of the first category or the second category: when the shadow area ratio of the boiler fire viewing hole in the target image reaches a preset threshold, the target image is determined to be of the first category; otherwise, the target image is determined to be of the second category. The first processing module is also used to determine that the boiler fire viewing hole needs to be decoked when all target images are determined to be of the first category, and to send a first electrical signal. Otherwise, it is determined that the boiler fire viewing hole does not need to be decoked, and a second electrical signal is sent. The second processing module is electrically connected to the first processing module, and is used to control the decoking unit 3 to decoke the boiler fire viewing hole according to the first electrical signal.

[0107] In this embodiment, the analysis unit also includes: a third processing module; the third processing module is used to obtain image information of the boiler fire viewing hole again after the decoking unit 3 completes one decoking of the boiler fire viewing hole, and re-determine whether the boiler fire viewing hole needs to be decoked again based on the image information. If so, the decoking unit 3 is controlled to decoke the boiler again; if not, the decoking process ends.

[0108] In the embodiments of the present invention, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present application. A general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of the present application may be directly implemented as being executed by a hardware processor, or may be executed by a combination of hardware and software modules in the processor.

[0109] Example 6

[0110] An embodiment of the present invention further discloses a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the processor executes the above-mentioned boiler fire-viewing hole decoking method.

[0111] Computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information (such as computer-readable instructions, data structures, program modules or other data). Computer storage media includes but is not limited to RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer.

[0112] It will be understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present invention, and the present invention is not limited thereto. Those skilled in the art will appreciate that various modifications and improvements can be made without departing from the spirit and substance of the present invention, and such modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A boiler fire-viewing hole decoking method, characterized in that: The following steps are involved: Acquire image information of the boiler fire viewing hole, wherein the image information includes: a plurality of target images, wherein the plurality of target images are images of the boiler fire viewing hole taken from different shooting angles; Determine whether the boiler fire viewing hole needs to be decoked based on multiple target images in the image information: If so, the decoking unit (3) is controlled to decoke the boiler fire viewing hole.

2. The boiler fire-viewing hole decoking method according to claim 1, characterized in that: The determining whether it is necessary to decoke the boiler fire viewing hole according to the plurality of target images in the image information is specifically as follows: Determine whether the shadow area ratio of the boiler fire viewing hole in each target image in the image information reaches a preset threshold; If so, it is determined that the boiler fire viewing hole needs to be decoked.

3. The boiler fire-viewing hole decoking method according to claim 2, characterized in that: The method further comprises: After the decoking unit (3) completes the decoking of the boiler fire viewing hole, the image information of the boiler fire viewing hole is obtained again, and based on the image information, it is re-determined whether the boiler fire viewing hole needs to be decoked again: If yes, the decoking unit (3) is controlled to decoke the boiler again; if no, the decoking process ends.

4. A boiler fire-viewing hole decoking device, used to implement the boiler fire-viewing hole decoking method according to any one of claims 1 to 3, characterized in that: include: A monitoring unit (1), a control unit (4) and a decoking unit (3); The monitoring unit (1) is directed toward the boiler fire viewing hole and is used to obtain image information of the boiler fire viewing hole; The control unit (4) is electrically connected to the monitoring unit (1) and is used to determine whether the boiler fire viewing hole needs to be decoked based on the image information of the boiler fire viewing hole obtained by the monitoring unit (1), and if so, to send a start signal; The decoking unit (3) comprises a scraper drill bit (31) and a driving device (32), wherein the central axis of the scraper drill bit (31) and the central axis of the boiler fire-viewing hole are on the same extension line, and the tip of the scraper drill bit (31) faces the boiler fire-viewing hole, and the driving end of the driving device (32) is connected to the scraper drill bit (31). The driving device (32) is electrically connected to the control unit (4). When receiving a start signal from the control unit (4), the driving device (32) is used to drive the scraper drill bit (31) to rotate around its own axis and drive the scraper drill bit (31) to advance along the central axis of the boiler fire-viewing hole, thereby decoking the boiler fire-viewing hole.

5. The boiler fire-viewing hole decoking device according to claim 4, characterized in that: The boiler fire-viewing hole decoking device further comprises a mounting portion (2), the mounting portion (2) being annular, the mounting portion (2) being spaced apart from the boiler fire-viewing hole, the central axis of the mounting portion (2) being on the same extended line as the central axis of the boiler fire-viewing hole, The monitoring unit (1) includes a plurality of cameras (11), the plurality of cameras (11) are arranged along the circumferential direction of the mounting portion (2), the plurality of cameras (11) are all directed toward the boiler fire viewing hole, and the plurality of cameras (11) respectively take pictures of the boiler fire viewing hole from different shooting angles, thereby obtaining image information of the boiler fire viewing hole.

6. The boiler fire-viewing hole decoking device according to claim 5, characterized in that: The scraper drill bit (31) comprises a blade (311) and a blade holder (312), wherein the blade holder (312) is connected to the driving end of the driving device (32), one end of the blade (311) is a tip, and the other end is a connecting end, the tip of the blade (311) faces the boiler fire viewing hole, and the connecting end of the blade (311) is connected to the blade holder (312). There are multiple blades (311), and the multiple blades (311) are arranged around the central axis of the blade seat (312).

7. The boiler fire-viewing hole decoking device according to claim 6, characterized in that: An air flow groove is provided between two adjacent blades (311). The knife seat (312) is provided with a plurality of compressed air nozzles (313), the number of the compressed air nozzles (313) is the same as the number of the air flow grooves, and each compressed air nozzle (313) corresponds to an air flow groove, and the compressed air nozzle (313) is used to spray air into the air flow groove to remove burnt debris in the air flow groove.

8. The boiler fire-viewing hole decoking device according to claim 7, characterized in that: The boiler fire-viewing hole decoking device further comprises: a compressed air unit (6), the compressed air unit (6) being in communication with the compressed air nozzle (313), and the compressed air unit (6) being used to provide compressed air to the compressed air nozzle (313).

9. A coal-fired power plant boiler system, characterized in that: include: A boiler and a boiler fire-viewing hole decoking device according to any one of claims 4 to 8; The boiler is used for coal combustion, the boiler is provided with a fire viewing hole, and the boiler fire viewing hole decoking device is used for decoking the boiler fire viewing hole.

10. An electronic device, characterized in that: The invention comprises a memory and a processor, wherein a computer program is stored in the memory, and when the processor runs the computer program stored in the memory, the processor executes the boiler fire viewing hole decoking method according to any one of claims 1 to 3.

11. A computer-readable storage medium, characterized in that A computer program is stored thereon, and when the computer program is executed by a processor, the processor executes the boiler fire-viewing hole decoking method according to any one of claims 1 to 3.

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