Ash removal method for boiler flue and related device

Abstract

The embodiment of the invention discloses an ash removal method for a boiler flue, a related device and a server applied to an ash removal system. The ash removal system comprises the server, monitoring equipment in communication connection with the server and ash removal equipment. The method comprises the steps that the operation state of the boiler is determined, the operation state represents the load degree in the boiler operation process, and the operation state comprises the low load state and the high load state; when the boiler is in the low-load state, ash deposition monitoring data of a horizontal flue of the boiler are obtained through monitoring equipment; and according to the ash deposition monitoring data, controlling the ash removal equipment to execute corresponding ash removal operation. Targeted dust removal operation is carried out on different accumulated dust amounts of the boiler flue, so that the efficiency of cleaning the accumulated dust in the boiler flue is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of boiler ash removal, in particular to a method for removing ash from a boiler flue and related device. BACKGROUND

[0002] As the core power equipment and heat source of industrial production, energy supply and people's livelihood heating, the boiler is known as the industrial heart. At present, the safe and stable operation of the boiler still faces many severe challenges and problems to be solved, among which the dust accumulation of the boiler is a serious safety hazard.

[0003] For some fuels, alkali metal salts and sulfuric acid salts in flue gas are in a gaseous state at high temperatures, and when the temperature decreases, they will condense into a liquid state and adhere to dust particles and flue walls, greatly increasing the adhesion of the dust, making it difficult to be blown away once it comes into contact with the flue wall, thereby accelerating the formation and thickening of the dust layer. The burner often does not operate at the best operating condition, which easily leads to incomplete combustion of the fuel, producing more unburned carbon particles with light specific gravity but high adhesion. These carbon particles themselves have strong adsorption and adhesion, forming a very strong dust accumulation.

[0004] The prior art removes dust by setting a scraper, ash removal mechanism and other mechanical devices inside the horizontal pipeline, and removing dust by physical scraping or shoveling. However, it has the following disadvantages: the continuous friction between the scraper and the pipe wall and the dust will cause the scraper to wear out, and when cleaning dust with high adhesion or serious hardening, the mechanical structure has the risk of being stuck, blocked or even causing the drive motor to burn out, which requires regular replacement and maintenance, increasing the cost of labor and spare parts. SUMMARY

[0005] Therefore, the present application provides a method for removing ash from a boiler flue and related device, in order to improve the efficiency of cleaning the ash accumulation in the boiler flue by taking targeted dust removal operations according to different amounts of dust accumulation in the boiler flue.

[0006] In a first aspect, the embodiments of the present application provide a method for removing ash from a boiler flue, applied to a server of an ash removal system, the ash removal system comprising: the server, a monitoring device in communication connection with the server, and an ash removal device; the method comprising: determining the operating state of the boiler, the operating state being indicative of the load degree during the operation of the boiler, the operating state comprising a low load state and a high load state; when the boiler is in the low load state, obtaining ash accumulation monitoring data of the horizontal flue of the boiler through the monitoring device; controlling the ash removal device to perform corresponding ash removal operations according to the ash accumulation monitoring data.

[0007] In a possible embodiment, the obtaining the ash deposition monitoring data of the horizontal flue of the boiler comprises: receiving the ash deposition thickness data of the bottom of the horizontal flue and the front-rear pressure difference data of the horizontal flue sent by the monitoring device.

[0008] In a possible embodiment, the controlling the ash removal device to perform corresponding ash removal operations according to the ash deposition monitoring data comprises: when the ash deposition thickness data is less than a first thickness threshold value and the front-rear pressure difference data is less than a first pressure difference threshold value, controlling the ash removal device to start and perform a sound wave ash removal process, the ash removal device comprising a sound wave ash remover arranged at the top and the side of the horizontal flue respectively; and obtaining the ash deposition monitoring data in real time and adjusting the power of the ash removal device according to the change speed of the ash deposition monitoring data.

[0009] In a possible embodiment, the ash removal system further comprises a baffle arranged at the inlet of the horizontal flue; and the controlling the ash removal device to perform corresponding ash removal operations according to the ash deposition monitoring data comprises: when the ash deposition thickness data is greater than the first thickness threshold value and less than a second thickness threshold value and the front-rear pressure difference data is greater than the first pressure difference threshold value and less than a second pressure difference threshold value, controlling the ash removal device to start and perform the sound wave ash removal process; and controlling the baffle to reduce the opening angle to increase the flow rate of the gas passing through the horizontal flue, so that the gas carries away the ash deposition of the horizontal flue.

[0010] In a possible embodiment, the ash removal system further comprises an operation and maintenance device, the operation and maintenance device being a mobile device used by an operation and maintenance personnel of the boiler; and the controlling the ash removal device to perform corresponding ash removal operations according to the ash deposition monitoring data comprises: when the ash deposition thickness data is greater than the second thickness threshold value and the front-rear pressure difference data is greater than the second pressure difference threshold value, sending manual ash removal information to the operation and maintenance device, the manual ash removal information being used to instruct the operation and maintenance personnel to perform manual ash removal processing on the boiler.

[0011] In a possible embodiment, after the sending of the manual ash removal information to the operation and maintenance device, the method further comprises: receiving feedback information sent by the operation and maintenance device, the feedback information being used to represent that the operation and maintenance personnel complete the manual ash removal processing; and in response to the feedback information, controlling the ash removal device to start and perform the sound wave ash removal process on the residual ash deposition of the horizontal flue.

[0012] In a possible embodiment, the ash removal system further comprises an airflow flow rate sensor; the determining the operation state of the boiler comprises: detecting, by the airflow flow rate sensor, an airflow flow rate of the horizontal flue; determining that the operation state of the boiler is the low-load state when the airflow flow rate is lower than a preset flow rate threshold; and determining that the operation state of the boiler is the high-load state when the airflow flow rate is higher than the preset flow rate threshold.

[0013] In a second aspect, an embodiment of the present application provides an ash removal device for a boiler flue, applied to a server of an ash removal system, the ash removal system comprising: the server, a monitoring device in communication connection with the server, and an ash removal device; the ash removal device for the boiler flue comprises: a determination unit, an acquisition unit, and a control unit; the determination unit is configured to determine an operation state of a boiler, the operation state being indicative of a load degree in an operation process of the boiler, and the operation state comprising a low-load state and a high-load state; the acquisition unit is configured to acquire, by the monitoring device, ash deposition monitoring data of a horizontal flue of the boiler when the boiler is in the low-load state; and the control unit is configured to control the ash removal device to perform a corresponding ash removal operation according to the ash deposition monitoring data.

[0014] In a third aspect, an embodiment of the present application provides an electronic device, comprising a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor, and the programs comprise instructions for performing the steps in the second aspect of the embodiment of the present application.

[0015] In a fourth aspect, an embodiment of the present application provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program for electronic data exchange, and the computer program causes a computer to perform some or all of the steps described in the second aspect of the embodiment of the present application.

[0016] In a fifth aspect, an embodiment of the present application provides a computer program product, comprising a non-transitory computer readable storage medium storing a computer program, the computer program being operable to cause a computer to perform some or all of the steps described in the second aspect of the embodiment of the present application. The computer program product can be a software installation package.

[0017] It can be seen that by the provided ash removal method for the boiler flue and the related device, the method comprises: firstly determining the operation state of the boiler, the operation state comprising a low load state and a high load state; secondly, when the boiler is in the low load state, obtaining the ash deposition monitoring data of the horizontal flue of the boiler by the monitoring device; and finally controlling the ash removal device to perform corresponding ash removal operation according to the ash deposition monitoring data. In this way, by taking targeted dust removal operation according to different ash deposition amounts of the boiler flue, the efficiency of cleaning the ash deposition of the boiler flue is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Figure 1 is a system architecture schematic diagram of an ash removal system provided by an embodiment of the present application; Figure 2 is an application scenario schematic diagram of an ash removal system provided by an embodiment of the present application; Figure 3 is another application scenario schematic diagram of an ash removal system provided by an embodiment of the present application; Figure 4 is a flowchart schematic diagram of an ash removal method for a boiler flue provided by an embodiment of the present application; Figure 5 is another application scenario schematic diagram of an ash removal system provided by an embodiment of the present application; Figure 6 is a functional unit composition block diagram of an ash removal device for a boiler flue provided by an embodiment of the present application; Figure 7 is a structural block diagram of an electronic device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0020] In order to make the person skilled in the art better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0021] The terms "first", "second", and the like in the description and in the claims of the present application and above-described drawings are used to distinguish different objects, and are not used to describe a particular order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device including a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or units inherent to the process, method, product, or device.

[0022] It should be understood that the term "and / or" herein only describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent three cases of A alone, A and B together, and B alone. In addition, the character " / " herein represents an "or" relationship between the front and rear associated objects.

[0023] "Multiple" appearing in the embodiments of the present application means two or more. "Connection" appearing in the embodiments of the present application means direct connection or indirect connection and various connection modes to achieve communication between devices, which is not limited by the embodiments of the present application.

[0024] Reference to "embodiments" herein means that the specific features, structures, or characteristics described in conjunction with the embodiments can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily mean the same embodiment, nor is it an independent or alternative embodiment to other embodiments. The skilled person in the art explicitly and implicitly understands that the embodiments described herein can be combined with other embodiments.

[0025] The related content, concepts, meanings, technical problems, technical solutions, beneficial effects, etc. involved in the embodiments of the present application are described below.

[0026] As the core power equipment and heat source of industrial production, energy supply and people's livelihood heating, the boiler is known as the industrial heart. At present, the safe and stable operation of the boiler still faces many severe challenges and problems to be solved, among which the dust accumulation of the boiler is a serious safety hazard. For some fuels, alkali metal salt and sulfate in flue gas are in a gaseous state at high temperature, and when the temperature decreases, they will condense into a liquid state, adhere to the dust particles and the flue wall, greatly increasing the viscosity of the dust, so that it is difficult to be blown away once it contacts the flue wall, thereby accelerating the formation and thickening of the dust layer. The burner often does not operate at the best operating condition, which easily leads to incomplete combustion of the fuel, producing more unburned carbon particles with light specific gravity but high viscosity. These carbon particles themselves have strong adsorption and adhesion, forming a very strong cohesive dust.

[0027] The prior art removes dust by setting a scraper, a dust removal mechanism and other mechanical devices inside the horizontal pipeline to remove dust by physical scraping or shoveling, but has the following disadvantages: the continuous friction between the scraper and the pipeline wall and dust causes the scraper to wear out, and when cleaning dust that is sticky or seriously caked, the mechanical structure is at risk of being stuck, blocked or even causing the driving motor to burn out, which requires regular replacement and maintenance, increasing labor and spare parts costs.

[0028] To solve the above problems, the present application provides a dust removal method for a boiler flue and related devices, in order to improve the efficiency of cleaning the dust accumulated in the boiler flue by taking targeted dust removal operations according to different amounts of dust accumulated in the boiler flue.

[0029] First, the method in the embodiments of the present application is applied to a server, which is combined with Figure 1 The dust removal method for a boiler flue in the embodiments of the present application is described. Figure 1 is a system architecture diagram of a dust removal system provided by the embodiments of the present application, as Figure 1 shown, the dust removal system 100 includes a server 110, a monitoring device 120 in communication with the server 110, and a dust removal device 130. Among them, the dust removal system 100 is a system for cleaning the dust accumulated in the horizontal flue of the boiler.

[0030] Among them, the server 110 determines the running state of the boiler, the running state is a load degree representing the running process of the boiler, and the running state includes a low load state and a high load state; secondly, when the boiler is in a low load state, the server 110 obtains dust accumulation monitoring data of the horizontal flue of the boiler through the monitoring device 120; finally, the server 110 controls the dust removal device to perform corresponding dust removal operation according to the dust accumulation monitoring data.

[0031] Specifically, the server 110 is the control device and master control unit of the dust removal system, used to receive the dust accumulation monitoring data sent by the monitoring device and analyze it to determine the stage of the flue dust accumulation; according to the dust accumulation stage, send precise control instructions to the dust removal device to realize phased dust removal; and real-time monitor the running state of the dust removal device, if the data is abnormal during the dust removal process, automatically adjust the control strategy to ensure the safety of the boiler operation. The dust removal device 130 can be an acoustic dust removal device, which generates low-frequency high-intensity sound waves by driving the sound wave generator with compressed air, disturbs the dust to make it suspended, and is discharged with the flue gas.

[0032] Specifically, please refer to Figure 2 , Figure 2 is an application scenario diagram of a dust removal system provided by the embodiments of the present application, as Figure 2 shown, including a horizontal flue 20.

[0033] The bottom of the horizontal flue 20 is provided with a monitoring device 120, which is a sensing device for collecting accumulated ash monitoring data, for monitoring the accumulated ash thickness and the front-rear pressure difference of the bottom of the horizontal flue in real time. Specifically, the horizontal flue 20 is designed with a bearing upper limit, and real-time monitoring of the accumulated ash thickness can avoid deformation, subsidence or collapse of the flue caused by excessive weight of the accumulated ash, thereby ensuring the safe operation of the boiler; a continuously rising front-rear pressure difference means that the cross section of the flue is blocked, which may cause flue gas backflow, abnormal furnace pressure, and even ignition of accumulated ash, and real-time monitoring can trigger an early warning to avoid serious accidents such as explosion and corrosion perforation.

[0034] The top of the horizontal flue 20 further comprises a plurality of ash removal devices 130 arranged at intervals, which are electrically connected to the server 110, for generating low-frequency high-intensity sound waves by a compressed air driven sound wave generator to disturb the dust and make it suspended.

[0035] Specifically, please refer to Figure 3 , Figure 3 is another application scenario of the ash removal system provided by the embodiment of the present application, as shown in Figure 3 , a plurality of ash removal devices 130 are also arranged at intervals on the side of the horizontal flue 20; a plurality of ash removal devices 130 are installed at intervals along the axis direction on the top or above the side of the horizontal flue 20 to remove dust from the horizontal flue 20, high-intensity, low-frequency sound waves are generated in the horizontal flue 20 by the horn of the ash removal device 130, ensuring that the sound waves can radiate downward and to all directions to cover the entire cross section, so that the dust particles of the accumulated dust produce acoustic flow and vibration, destroy their deposition structure, and always remain in a suspended state and be carried away by the flowing flue gas.

[0036] Next, in combination with Figure 4 , a model training method in the embodiment of the present application will be described, Figure 4 is a flowchart of an ash removal method for a boiler flue provided by the embodiment of the present application, the method in the embodiment is applied to the server 110 of the ash removal system 100 as shown in Figures 1-3 , and the method comprises the following steps: Step S410, determining the operating state of the boiler.

[0037] The operating state is a load degree representing the operation of the boiler, and the operating state includes a low load state and a high load state. Specifically, when the boiler is reduced from a high load to a low load, the flue gas flow rate gradually decreases, and the energy cannot support the carrying of dust out of the horizontal flue, resulting in the falling of dust particles to the bottom of the horizontal flue and gradual accumulation, forming accumulated dust. Therefore, in the low load state of the boiler, the accumulated dust in the boiler flue needs to be monitored and cleaned in time to ensure the safe operation of the boiler.

[0038] At step S420, when the boiler is in a low load state, the soot monitoring data of the horizontal flue of the boiler is acquired by the monitoring device.

[0039] In one possible embodiment, the soot monitoring data of the horizontal flue of the boiler is acquired, including: receiving the soot thickness data of the bottom of the horizontal flue and the front-rear pressure difference data of the horizontal flue sent by the monitoring device.

[0040] The monitoring of the soot thickness can avoid deformation, subsidence or collapse of the flue caused by excessive soot weight, and ensure safe operation of the boiler; a continuously rising front-rear pressure difference means that the flue cross section is blocked, which may cause flue gas backflow, abnormal furnace pressure, and even soot ignition. Real-time monitoring can trigger early warning and avoid serious accidents such as explosion and corrosion perforation.

[0041] In this embodiment, the soot thickness data and the front-rear pressure difference data of the horizontal flue are monitored to comprehensively control the soot condition of the flue, which facilitates subsequent targeted soot cleaning operation according to the soot condition, thereby comprehensively ensuring the safe operation of the boiler and improving the soot cleaning efficiency of the flue.

[0042] At step S430, the soot cleaning device is controlled to perform corresponding soot cleaning operation according to the soot monitoring data.

[0043] Specifically, the soot cleaning stage of the current horizontal flue can be determined according to the soot monitoring data, including: a light soot stage, a medium soot stage and a heavy soot stage; in the light soot stage, the soot thickness is low and the front-rear pressure difference of the flue is small, and the soot cleaning device can be used for soot cleaning in a small amount and multiple times, so that the dust is in a suspended state and is discharged with the main gas flow when the dust has not yet firmly adhered; in the medium soot stage, when the boiler load continues to decrease, the flue gas flow rate becomes smaller and smaller, which causes more dust particles to fall to the horizontal flue, so that the soot cleaning device alone cannot completely clean the dust, and the baffle needs to be used as the main soot cleaning means to adjust the flue gas flow rate to ensure that the flue gas has enough energy to carry away most of the dust, and the soot cleaning device is used as an auxiliary means for soot cleaning; in the heavy soot stage, the flow cross section is seriously blocked and the bottom soot is hardened, which causes difficulties in the operation of the boiler system and safety risks. Only the baffle and the acoustic soot cleaner cannot fundamentally solve the soot problem, and are prone to accelerate the wear of the equipment, so that manual soot cleaning is mainly used by instructing the boiler operation and maintenance personnel to realize manual soot cleaning.

[0044] In the embodiment, firstly, the operation state of the boiler is determined, and the operation state includes a low load state and a high load state; secondly, when the boiler is in the low load state, the ash deposition monitoring data of the horizontal flue of the boiler is obtained through the monitoring device; and finally, the corresponding ash removal operation is performed on the ash removal device according to the ash deposition monitoring data. In this way, by taking targeted dust removal operation according to different dust amounts of the boiler flue, the efficiency of cleaning the ash deposition of the boiler flue is improved.

[0045] In one possible embodiment, according to the ash deposition monitoring data, the corresponding ash removal operation is performed on the ash removal device, including: when the ash deposition thickness data is less than a first thickness threshold value, and the front and rear pressure difference data is less than a first pressure difference threshold value, the ash removal device is controlled to start and perform the sound wave ash removal processing, and the ash removal device includes sound wave ash removers respectively arranged at the top and the side of the horizontal flue; the ash deposition monitoring data is obtained in real time, and the power of the ash removal device is adjusted according to the change speed of the ash deposition monitoring data.

[0046] When the ash deposition thickness data is less than the first thickness threshold value, and the front and rear pressure difference data is less than the first pressure difference threshold value, it indicates that the current flue dusting stage belongs to light dusting, and the ash removal device can be controlled to perform ash removal alone; a small amount of multiple ash removal mode is adopted, and when the dust has not been firmly attached, the dust is disturbed by frequent and short sound wave energy to keep it in a suspended state and be discharged with the main airflow. Specifically, the first thickness threshold value can be 50 mm, and the first pressure difference threshold value can be set to 10%.

[0047] During the ash removal process, the ash deposition monitoring data is monitored in real time through the monitoring device, and if the change speed of the ash deposition monitoring data is relatively slow, it means that the current ash removal effect of the ash removal device is poor, and the power of the ash removal device can be increased to improve the ash removal effect. Specifically, the frequency and number of sound waves emitted by the ash removal device can also be adjusted, and the compressed air pressure is ensured to be at the upper limit of the rated range to maximize the sound wave output energy.

[0048] It can be seen that in the embodiment, when it is determined that the current flue dusting stage is light by judging the ash deposition thickness data and the front and rear pressure difference data, the ash removal device is controlled to start and perform the sound wave ash removal processing; and the ash deposition monitoring data is obtained in real time, and the power of the ash removal device is adjusted according to the change speed of the ash deposition monitoring data. In this way, in the case of light dusting, the ash removal device is controlled to perform ash removal operation alone, without additional consumption of system resources, and the ash removal operation is efficiently and timely performed, and the power of the ash removal device is adjusted in real time to ensure the ash removal effect.

[0049] In one possible embodiment, the dust removal system further includes a baffle plate disposed at the inlet of the horizontal flue; based on ash accumulation monitoring data, the dust removal equipment is controlled to perform corresponding dust removal operations, including: when the ash accumulation thickness data is greater than a first thickness threshold and less than a second thickness threshold, and when the pressure difference data is greater than a first pressure difference threshold and less than a second pressure difference threshold, the dust removal equipment is controlled to start and perform acoustic dust removal treatment; and the baffle plate is controlled to reduce its opening angle to increase the flow rate of the gas through the horizontal flue, so that the gas carries away the ash accumulation in the horizontal flue.

[0050] Specifically, please refer to Figure 5 , Figure 5 This is a schematic diagram illustrating another application scenario of the dust removal system provided in this application embodiment. See also... Figure 5 ,like Figure 1 The dust removal system 100 shown also includes baffles, including an upper baffle 510 and a lower baffle 520 with a certain angle, which are respectively set at the top and bottom of the inlet of the horizontal flue.

[0051] Specifically, when the ash thickness is greater than the first thickness threshold but less than the second thickness threshold, and the differential pressure is greater than the first differential pressure threshold but less than the second differential pressure threshold, it indicates that the current stage of flue dust accumulation is moderate. As the boiler load continues to decrease, the flue gas velocity will become increasingly lower, leading to more dust particles settling into the horizontal flue. Individual cleaning equipment is insufficient to completely remove the dust, and individual cleaning is too resource-intensive. Therefore, baffles are needed as the primary cleaning method. Thus, while controlling the start-up of the cleaning equipment, it is also necessary to reduce the opening angle of the upper baffle 510 and lower baffle 520 to reduce the flue gas flow area, thereby increasing the gas velocity through the flue and ensuring that the flue gas has sufficient energy to carry away most of the dust. Specifically, the second thickness threshold can be 200 mm, and the second differential pressure threshold can be set to 30%.

[0052] As can be seen, in this embodiment, by judging the ash thickness data and the pressure difference data before and after, when it is determined that the current dust accumulation stage in the flue is moderate, the cleaning equipment is started to perform sonic cleaning treatment; and the opening and closing angle of the baffle is reduced to increase the flow rate of the gas through the horizontal flue, so that the gas carries away the ash accumulated in the horizontal flue. In this way, when the dust accumulation is more severe, the cleaning equipment and the baffle work together to ensure that the flue gas carries away most of the dust, and the remaining dust is removed by the cleaning equipment. This avoids the cleaning equipment operating beyond its capacity due to cleaning dust alone, reduces equipment consumption, and effectively improves cleaning efficiency.

[0053] In a possible embodiment, the soot cleaning system further comprises an operation and maintenance device, the operation and maintenance device being a mobile device used by an operator of the boiler; the controlling the soot cleaning device to perform the corresponding soot cleaning operation according to the soot deposition monitoring data comprises: when the soot deposition thickness data is greater than the second thickness threshold value and the front-rear pressure difference data is greater than the second pressure difference threshold value, sending manual soot cleaning information to the operation and maintenance device, the manual soot cleaning information being used to instruct the operator to perform manual soot cleaning on the boiler.

[0054] When the soot deposition thickness data is greater than the second thickness threshold value and the front-rear pressure difference data is greater than the second pressure difference threshold value, it indicates that the current flue dust deposition stage belongs to heavy dust deposition, the flow cross section is seriously blocked, the bottom soot is hardened, the boiler system is difficult to operate, there is a safety risk, and the soot cleaning by relying on the baffle and the soot cleaning device cannot fundamentally solve the soot deposition problem and is easy to accelerate the wear of the equipment. Therefore, the manual soot cleaning information is sent to the operation and maintenance device to instruct the operator of the boiler to perform manual soot cleaning.

[0055] Specifically, manual soot cleaning is mainly used, and tools such as air picks, electric picks, and high-pressure water guns are used to clean layer by layer and segment by segment until the flue metal wall surface is exposed, and the manual soot cleaning is basically completed.

[0056] It can be seen that, in the embodiment, when it is determined that the current flue dust deposition stage is heavy according to the soot deposition thickness data and the front-rear pressure difference data, the manual soot cleaning information is sent to the operation and maintenance device, and the manual soot cleaning information is used to instruct the operator to perform manual soot cleaning on the boiler. In this way, in the case of serious dust deposition, the operator of the boiler is notified in time to perform soot cleaning, which avoids excessive operation of the soot cleaning device to reduce equipment consumption, and at the same time, the operator is notified in time to perform treatment for serious dust deposition, which is beneficial to realize efficient and timely soot cleaning.

[0057] In a possible embodiment, after the manual soot cleaning information is sent to the operation and maintenance device, the method further comprises: receiving feedback information sent by the operation and maintenance device, the feedback information being used to represent that the operator completes the manual soot cleaning; and in response to the feedback information, controlling the soot cleaning device to start and performing acoustic soot cleaning on residual soot deposition of the horizontal flue.

[0058] Wherein, due to the use of pick, high-pressure water gun and other tools by operation and maintenance personnel, although the hardened main bulk dust can be removed, it is difficult to reach the corners, gaps and small gaps of the heating surface, and loose or weakly adherent dust is easily left, which can become the core of subsequent dust accumulation and accelerate secondary accumulation. When the load is low, the flue gas flow rate is low and the dust adhesion is strong. If the residual dust is not removed in time, it will quickly absorb new dust and form a dust layer again in a short period of time, resulting in ineffective dust removal and even causing the recurrence of flue blockage. Therefore, after manual dust removal is completed, the dust removal equipment can disturb the dust to be suspended by low-frequency high-intensity sound waves, and the non-contact cleaning will not damage the flue wall surface after manual dust removal.

[0059] As can be seen, in the embodiment, feedback information sent by the operation and maintenance equipment is received, and in response to the feedback information, the dust removal equipment is controlled to start and perform sound wave dust removal processing on the residual dust in the horizontal flue. The level of automation and intelligence of the dust removal system is optimized, the risk of entering the heavy dust accumulation stage again in a short period of time is avoided, and the dust removal frequency and operation and maintenance cost are reduced.

[0060] In one possible embodiment, the dust removal system further comprises an airflow flow rate sensor; determining the operation state of the boiler comprises: detecting the airflow flow rate of the horizontal flue by the airflow flow rate sensor; when the airflow flow rate is lower than a preset flow rate threshold, determining that the operation state of the boiler is a low-load state; when the airflow flow rate is higher than the preset flow rate threshold, determining that the operation state of the boiler is a high-load state.

[0061] Wherein, the airflow flow rate sensor is a physical quantity monitoring device installed in the horizontal flue, and the core function is to collect the flow velocity data of the flue gas in the flue in real time and convert the data into an electrical signal for transmission to the server. The preset flow rate threshold should be equal to or slightly higher than the critical settling velocity of the dust, that is, when the flow rate is lower than this value, the dust begins to settle and accumulate dust.

[0062] Wherein, the boiler load determines the fuel supply amount, and then affects the flue gas volume flow. When the load is low, the fuel is less, the flue gas volume flow decreases, and under the condition that the cross-sectional area of the flue is fixed, the airflow flow rate must decrease; when the load is high, the flow rate is positively correlated with the load, which can be used as an intuitive quantitative index of the load state. When the load is low, the flue gas flow rate is insufficient, the dust is easy to settle and the adhesion increases, which is a high-risk working condition of dust accumulation, and the corresponding phased dust removal strategy needs to be started. When the load is high, the flue gas flow rate is sufficient to effectively carry the dust out, the dust accumulation risk is low, and the low-load dedicated dust removal process does not need to be started, and only the regular monitoring needs to be maintained.

[0063] It can be seen that, in the embodiment, the air flow rate of the horizontal flue is detected by the air flow rate sensor; when the air flow rate is lower than the preset flow rate threshold, it is determined that the operation state of the boiler is a low load state; and when the air flow rate is higher than the preset flow rate threshold, it is determined that the operation state of the boiler is a high load state. The traditional method of judging the load of the boiler by relying on manual observation or indirect parameters is avoided, the air flow rate is a direct physical quantity in the flue, and the accuracy of the load state determination is ensured by excluding human interference through sensor detection. The load determination is realized by a single core parameter, the calculation pressure of the server is reduced, and the response efficiency of the ash removal system is improved.

[0064] The embodiments of the present application can divide the functional units of the electronic device according to the above-mentioned method examples. For example, each functional unit can be divided according to each function, or two or more functions can be integrated in one processing unit. The integrated unit can be realized in the form of hardware or software functional unit. It should be noted that the division of units in the embodiments of the present application is illustrative, and is only a logical function division. When actually implemented, another division method can be used.

[0065] Consistent with the embodiments of Figure 4 , please refer to Figure 6 , Figure 6 is a functional unit composition block diagram of the ash removal device for the boiler flue provided by the embodiments of the present application. The ash removal device for the boiler flue 600 is applied to the server 110 of the ash removal system 100 as shown in Figure 1 . The ash removal device for the boiler flue 600 includes a determination unit 610, an acquisition unit 620, and a control unit 630. The determination unit 610 is configured to determine the operation state of the boiler, wherein the operation state represents the load degree in the operation process of the boiler, and the operation state includes a low load state and a high load state. The acquisition unit 620 is configured to acquire the ash deposition monitoring data of the horizontal flue of the boiler by the monitoring device when the boiler is in the low load state. The control unit 630 is configured to control the ash removal device to perform a corresponding ash removal operation according to the ash deposition monitoring data.

[0066] In one possible embodiment, when the ash deposition monitoring data of the horizontal flue of the boiler is acquired, the acquisition unit 620 is specifically configured to receive the ash deposition thickness data of the bottom of the horizontal flue and the front-rear pressure difference data of the horizontal flue sent by the monitoring device.

[0067] In a possible implementation, in the aspect of controlling the soot cleaning device to perform a corresponding soot cleaning operation according to the soot monitoring data, the control unit 630 is specifically configured to: when the soot thickness data is less than a first thickness threshold value and the front-rear pressure difference data is less than a first pressure difference threshold value, control the soot cleaning device to start and perform a sound wave soot cleaning process, the soot cleaning device including sound wave soot cleaners arranged at the top and the side of the horizontal flue respectively; and in real time, acquire the soot monitoring data, and adjust the power of the soot cleaning device according to the change speed of the soot monitoring data.

[0068] In a possible implementation, the soot cleaning system further includes a baffle arranged at the inlet of the horizontal flue; in the aspect of controlling the soot cleaning device to perform a corresponding soot cleaning operation according to the soot monitoring data, the control unit 630 is specifically configured to: when the soot thickness data is greater than the first thickness threshold value and less than a second thickness threshold value, and the front-rear pressure difference data is greater than the first pressure difference threshold value and less than a second pressure difference threshold value, control the soot cleaning device to start and perform the sound wave soot cleaning process; and control the baffle to reduce the opening angle, so as to increase the flow rate of the gas passing through the horizontal flue, and enable the gas to carry away the soot of the horizontal flue.

[0069] In a possible implementation, the soot cleaning system further includes an operation and maintenance device, the operation and maintenance device being a mobile device used by an operation and maintenance personnel of the boiler; in the aspect of controlling the soot cleaning device to perform a corresponding soot cleaning operation according to the soot monitoring data, the control unit 630 is specifically configured to: when the soot thickness data is greater than the second thickness threshold value and the front-rear pressure difference data is greater than the second pressure difference threshold value, send manual soot cleaning information to the operation and maintenance device, the manual soot cleaning information being used to instruct the operation and maintenance personnel to perform a manual soot cleaning process on the boiler.

[0070] In a possible implementation, after the manual soot cleaning information is sent to the operation and maintenance device, the control unit 630 is specifically further configured to: receive feedback information sent by the operation and maintenance device, the feedback information being used to represent that the operation and maintenance personnel complete the manual soot cleaning process; and in response to the feedback information, control the soot cleaning device to start and perform the sound wave soot cleaning process on residual soot of the horizontal flue.

[0071] In a possible implementation, the soot cleaning system further includes an airflow flow rate sensor; in the aspect of determining the operation state of the boiler, the determination unit 610 is specifically configured to: detect the airflow flow rate of the horizontal flue through the airflow flow rate sensor; when the airflow flow rate is lower than a preset flow rate threshold value, determine that the operation state of the boiler is the low-load state; and when the airflow flow rate is higher than the preset flow rate threshold value, determine that the operation state of the boiler is the high-load state.

[0072] It can be understood that, since the method embodiments and the device embodiments are different present forms of the same technical concept, the content of the method embodiments part in the present application should be adapted to the device embodiments part synchronously, which will not be repeated here.

[0073] Figure 7 is a structural block diagram of an electronic device provided by an embodiment of the present application. As shown in Figure 7 , the electronic device 700 can include one or more of the following components: a processor 701, a memory 702 coupled with the processor 701, wherein the memory 702 can store one or more computer programs, and the one or more computer programs can be configured to be executed by the one or more processors 701 to implement the method as described in the above examples. Wherein, the electronic device 700 can be a server 110 as shown in Figure 1 .

[0074] The processor 701 can include one or more processing cores. The processor 701 connects various parts in the entire electronic device 700 by various interfaces and lines, and performs various functions of the electronic device 700 and processes data by running or executing instructions, programs, code sets or instruction sets stored in the memory 702, and calling data stored in the memory 702. Optionally, the processor 701 can be implemented in at least one of a hardware form of a digital signal processing (DSP), a field-programmable gate array (FPGA), a programmable logic array (PLA). The processor 701 can integrate a combination of one or several of a central processing unit (CPU), a graphics processor (GPU), and a modem. It can be understood that the above-mentioned modem can also not be integrated into the processor 701, but be implemented by a separate communication chip.

[0075] The memory 702 can include a random access memory (RAM) and can also include a read-only memory (ROM). The memory 702 can be used to store instructions, programs, codes, code sets, or instruction sets. The memory 702 can include a program storage area and a data storage area, where the program storage area can store instructions for implementing an operating system, instructions for implementing at least one function (such as a touch function, a sound playing function, an image playing function, etc.), instructions for implementing the various method examples described above, and the like. The data storage area can also store data created by the electronic device 700 in use, and the like.

[0076] It can be understood that the electronic device 700 can include more or fewer structural elements than those in the above structural block diagram, for example, a power module, a physical key, a WiFi (Wireless Fidelity) module, a speaker, a Bluetooth module, a sensor, and the like, which are not limited herein.

[0077] Embodiments of the present application further provide a computer storage medium, wherein a computer program / instructions are stored on the computer storage medium, and the computer program / instructions are executed by a processor to implement some or all steps of any method described in the above method embodiments.

[0078] Embodiments of the present application further provide a computer program product, which includes a non-transitory computer readable storage medium storing a computer program, and the computer program is operable to cause a computer to perform some or all steps of any method described in the above method embodiments.

[0079] It should be understood that, in various embodiments of the present application, the size of the sequence number of the above processes does not mean the order of execution, and the execution order of the processes should be determined according to their functions and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0080] In several embodiments provided in the present application, it should be understood that the disclosed methods, devices and systems can be implemented in other ways. For example, the above-described device embodiments are only schematic; for example, the division of units is only a logical function division, and actual implementation can have another division manner; for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms.

[0081] The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, i.e. may be located in one place, or may be distributed to multiple network units. Part or all of the units may be selected according to actual needs to achieve the purpose of the embodiment.

[0082] In addition, each functional unit in various embodiments of the application can be integrated in one processing unit, or each unit can be physically included separately, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of hardware plus software functional unit.

[0083] The integrated unit realized in the form of software functional unit can be stored in a computer readable storage medium. The software functional unit is stored in a storage medium, including a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute part of the steps of the method of various embodiments of the application. The foregoing storage medium includes a U disk, a mobile hard disk, a magnetic disk, an optical disk, a volatile memory or a non-volatile memory. The non-volatile memory can be a read-only memory (read-only memory, ROM), a programmable read-only memory (programmable ROM, PROM), an erasable programmable read-only memory (erasable PROM, EPROM), an electrically erasable programmable read-only memory (electrically EPROM, EEPROM) or a flash memory. The volatile memory can be a random access memory (random access memory, RAM) used as an external cache. By way of example but not limitation, many forms of random access memory (random access memory, RAM) can be used, such as static random access memory (static RAM, SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synchlink DRAM, SLDRAM) and direct memory bus random access memory (direct rambus RAM, DR RAM) and various media that can store program codes.

[0084] Although the present application has been disclosed in its preferred form, it is to be understood that numerous additions, substitutions and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the application as defined by the appended claims.

Claims

1. A method for cleaning ash from boiler flues, characterized in that, A server applied to a dust removal system, the dust removal system comprising: the server, monitoring equipment communicatively connected to the server, and dust removal equipment; the method comprising: Determine the operating status of the boiler, which characterizes the load level during boiler operation, including low load and high load states; When the boiler is in the low load state, the monitoring equipment is used to obtain ash accumulation monitoring data of the boiler's horizontal flue. Based on the ash accumulation monitoring data, the dust removal equipment is controlled to perform the corresponding dust removal operation.

2. The method according to claim 1, characterized in that, The acquisition of ash accumulation monitoring data in the horizontal flue of the boiler includes: The system receives data on the ash thickness at the bottom of the horizontal flue and the pressure difference data across the horizontal flue, both transmitted by the monitoring device.

3. The method according to claim 2, characterized in that, The step of controlling the dust removal equipment to perform corresponding dust removal operations based on the dust accumulation monitoring data includes: When the ash accumulation thickness data is less than the first thickness threshold and the front-to-back pressure difference data is less than the first pressure difference threshold, the cleaning device is controlled to start and perform sonic cleaning treatment. The cleaning device includes sonic cleaners respectively installed at the top and side of the horizontal flue. The dust accumulation monitoring data is acquired in real time, and the power of the dust removal equipment is adjusted according to the rate of change of the dust accumulation monitoring data.

4. The method according to claim 3, characterized in that, The dust removal system further includes a baffle plate disposed at the inlet of the horizontal flue; the step of controlling the dust removal equipment to perform corresponding dust removal operations based on the dust accumulation monitoring data includes: When the ash accumulation thickness is greater than the first thickness threshold and less than the second thickness threshold, and the differential pressure is greater than the first differential pressure threshold and less than the second differential pressure threshold, the cleaning equipment is started to perform the acoustic cleaning process; and... The baffle is controlled to reduce its opening and closing angle to increase the flow rate of gas through the horizontal flue, so that the gas carries away the ash accumulated in the horizontal flue.

5. The method according to claim 4, characterized in that, The ash removal system also includes maintenance equipment, which is mobile equipment used by the boiler's maintenance personnel; the step of controlling the ash removal equipment to perform corresponding ash removal operations based on the ash accumulation monitoring data includes: When the ash accumulation thickness data is greater than the second thickness threshold and the pressure difference data is greater than the second pressure difference threshold, a manual ash removal message is sent to the maintenance equipment. The manual ash removal message is used to instruct the maintenance personnel to perform manual ash removal on the boiler.

6. The method according to claim 5, characterized in that, After sending manual dust removal information to the maintenance equipment, the method further includes: Receive feedback information sent by the maintenance equipment, the feedback information being used to indicate that the maintenance personnel have completed the manual dust removal process; In response to the feedback information, the cleaning equipment is started to perform the acoustic cleaning treatment on the residual ash in the horizontal flue.

7. The method according to any one of claims 1-6, characterized in that, The ash removal system also includes an airflow velocity sensor; determining the boiler's operating status includes: The airflow velocity in the horizontal flue is detected by the airflow velocity sensor. When the airflow velocity is lower than a preset velocity threshold, the boiler's operating state is determined to be the low-load state. When the airflow velocity is higher than the preset velocity threshold, the boiler's operating state is determined to be the high-load state.

8. A ash removal device for boiler flues, characterized in that, A server is used in a ash removal system, the ash removal system comprising: the server, monitoring equipment communicatively connected to the server, and ash removal equipment; the ash removal device for boiler flues comprises: a determining unit, an acquiring unit, and a controlling unit; wherein, The determining unit is used to determine the operating state of the boiler, which is a characterization of the load level during the operation of the boiler, including low load state and high load state. The acquisition unit is used to acquire ash accumulation monitoring data of the horizontal flue of the boiler through the monitoring device when the boiler is in the low load state. The control unit is used to control the dust removal equipment to perform corresponding dust removal operations based on the dust accumulation monitoring data.

9. An electronic device, characterized in that, It includes a processor and a memory, the memory being used to store one or more programs and configured to be executed by the processor, the programs including instructions for performing the steps of the method as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, A computer program for storing electronic data interchange, wherein the computer program causes a computer to perform the method as described in any one of claims 1-7.

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