Soot blowing system
By installing a data acquisition terminal and soot blower inside the boiler, combined with an information comparison module and controller, precise soot blowing of the power plant boiler is achieved, solving the problems of increased flue gas temperature and damage to the heating surface metal caused by slag buildup inside the boiler, and extending the service life of the boiler and the heating surface metal.
Patent Information
- Application Number
- CN202511294105.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-10
- Publication Date
- 2026-01-13
AI Technical Summary
In existing technologies, the slag buildup inside power plant boilers is judged based on the experience of operators, which leads to untimely or frequent soot blowing, affecting the boiler flue gas temperature and the lifespan of the heated surface metal.
Multiple data acquisition terminals are used to monitor the internal status of the boiler in real time. Through the information comparison module and the controller, the soot blower is precisely controlled to blow soot in key ash accumulation areas. This includes infrared flue gas temperature, ash accumulation monitoring, wind speed, wall temperature and desuperheating water monitoring, combined with the alternating use of acoustic and steam soot blowers.
It enables timely soot blowing inside the boiler, extends the boiler's service life, protects the metal of the heating surface, avoids localized wear, and improves the thoroughness of soot removal and the even distribution of stress on the heating surface.
Smart Images
Figure CN121322969A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of boiler technology, and more specifically to a soot blowing system. Background Technology
[0002] Existing power plant boilers often accumulate severe ash buildup during long-term use, requiring the use of soot blowers to clean the ash-covered areas. Currently, the determination of whether to perform soot blowing relies on the experience of the operators to assess the slagging condition within the boiler furnace.
[0003] Using the above-mentioned soot blowing method, if soot blowing is not timely in the furnace of the power plant boiler, it can easily lead to an increase in the flue gas temperature of the power plant boiler, severely reducing the service life of the power plant boiler. Frequent soot blowing in the furnace can easily damage the internal heating surface metal of the power plant boiler, significantly shortening the service life of the heating surface metal. Summary of the Invention
[0004] In view of this, the present invention provides a soot blowing system to solve the problem that the existing method of relying on the experience of operators to judge the slag condition in the furnace of a power plant boiler and to determine whether to blow soot into the boiler is not timely. This can easily lead to an increase in the flue gas temperature of the power plant boiler, which will seriously reduce the service life of the power plant boiler. Furthermore, frequent soot blowing can easily damage the heat transfer surface metal inside the power plant boiler, which will seriously shorten the service life of the heat transfer surface metal.
[0005] This invention provides a soot blowing system, comprising:
[0006] Multiple data acquisition terminals are respectively arranged in all different areas of the furnace inside the boiler. The data acquisition terminals are suitable for acquiring the operating status data of different areas of the furnace inside the boiler in real time.
[0007] The information comparison module is connected to multiple data acquisition terminals; the information comparison module is adapted to compare the operating status data with a preset threshold in real time to obtain the degree of ash accumulation in different areas of the boiler furnace and to identify key ash accumulation areas where the ash accumulation operating status data exceeds the preset threshold.
[0008] Multiple soot blowers are installed in different areas of the furnace inside the boiler.
[0009] A controller is in signal connection with the information comparison module and the plurality of soot blowers, and is adapted to control the soot blowers corresponding to the key soot deposition area in real time to perform soot blowing operation on the key soot deposition area. Advantageously, the data acquisition terminal is arranged to obtain the operation state data of different areas of the furnace in real time, and the information comparison module and the controller are combined to control the soot blowers to perform soot blowing operation on the key soot deposition area, so that timely soot blowing of the furnace is realized, the service life of the boiler is prolonged, the metal of the heating surface in the boiler is protected, and the service life of the metal of the heating surface is prolonged.
[0010] Optionally, the data acquisition terminal comprises:
[0011] An infrared flue gas temperature measuring module is adapted to monitor the flue gas temperature of the furnace in the boiler in real time.
[0012] A soot deposition monitoring module is adapted to monitor the soot deposition thickness and soot deposition density of the heating surface of the furnace in the boiler in real time.
[0013] A wind speed monitoring module is adapted to monitor the wind speed and wind direction of the furnace in the boiler in real time.
[0014] A wall temperature monitoring module is adapted to monitor the temperature of the wall of the heating surface of the furnace in the boiler in real time.
[0015] A desuperheating water monitoring module is adapted to monitor the flow rate of the desuperheating water and the temperature of the desuperheating water in real time.
[0016] Optionally, the infrared flue gas temperature measuring module is an infrared flue gas temperature measuring probe, the wall temperature monitoring module is a temperature measuring meter, and the wind speed monitoring module is an ultrasonic wind direction and wind speed sensor.
[0017] Optionally, the soot blower comprises:
[0018] An acoustic soot blower is arranged in all different areas of the furnace in the boiler.
[0019] A steam soot blower is arranged in all different areas of the furnace in the boiler, and the acoustic soot blower and the steam soot blower are adapted to alternately perform soot blowing operation on the key soot deposition area. Advantageously, the acoustic soot blower is used for removing loose soot deposition by high-frequency acoustic vibration and is suitable for large-area and light-to-moderate soot deposition area, and the steam soot blower is used for removing stubborn soot deposition and slag by high-pressure steam injection, and the alternately used acoustic soot blower and steam soot blower can cover different types of soot deposition and improve the completeness of soot removal, thereby avoiding local wear caused by long-term effect of a single soot blowing mode, the acoustic soot blower has no mechanical contact, the steam soot blower has strong pertinence, the alternately used acoustic soot blower and steam soot blower can balance the stress of the heating surface, and the service life of the boiler equipment is prolonged.
[0020] Optionally, the steam soot blower is provided with a connected telescopic mechanism and a soot blowing nozzle, and the telescopic mechanism is suitable for driving the soot blowing nozzle to approach or move away from the place to be blown.
[0021] Optionally, further comprising:
[0022] The upper computer is signal connected with the plurality of data acquisition terminals and the information comparison module; the upper computer is suitable for carrying out noise reduction and format conversion processing on the running state data, and cooperates with the information comparison module to obtain the soot deposition degree of different areas of the internal furnace of the boiler and obtain the key soot deposition area whose soot deposition running state data exceeds a preset threshold value;
[0023] The central processing module is signal connected with the upper computer through the communication module; the central processing module is suitable for cooperating with the information comparison module to obtain the soot deposition degree of different areas of the internal furnace of the boiler and obtain the key soot deposition area whose soot deposition running state data exceeds a preset threshold value;
[0024] The information manager is signal connected with the upper computer through the communication module, and the information manager is signal connected with the central processing module; the information manager is suitable for storing the running state data, the soot blowing operation record and the fault data in real time, and storing them according to time, area and parameter type to form a historical database. Beneficial effects: the application adopts the above technical scheme, and the running state data is processed by the upper computer to ensure data validity; the running state data is stored by the information manager, which is convenient for later retrieval.
[0025] Optionally, the central processing module is provided with a calculation engine, and the calculation engine is suitable for statistically analyzing the historical data in the historical database, generating a preset threshold value, and cooperating with the information comparison module to obtain the soot deposition degree of different areas of the internal furnace of the boiler and obtain the key soot deposition area whose soot deposition running state data exceeds the preset threshold value. Beneficial effects: the application adopts the above technical scheme, and the calculation engine is set to analyze the historical data in depth, accurately identify the soot deposition position and the soot deposition degree.
[0026] Optionally, further comprising:
[0027] The fault backup module is signal connected with the information manager and the central processing module; the fault backup module is suitable for backing up abnormal data;
[0028] The transmission early warning unit is signal connected with the fault backup module and the central processing module; the transmission early warning unit is suitable for timely warning faults and transmitting fault data to the fault backup module for storage;
[0029] The early warning device is connected with the transmission early warning unit, and is adapted to give an alarm when the transmission early warning unit sends an early warning fault signal.
[0030] Optionally, the communication module includes 4G, 5G, Wi-Fi or industrial Ethernet.
[0031] Optionally, the data acquisition terminal and the soot blower located in the same area have a unified number. Advantage: The application adopts the above technical solution, and the number is set to realize accurate soot blowing according to the demand and avoid blind operation. BRIEF DESCRIPTION OF DRAWINGS
[0032] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0033] Figure 1 The connection schematic block diagram of the soot blowing system provided in the embodiments of the present application. DETAILED DESCRIPTION
[0034] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.
[0035] As shown in a specific embodiment of the soot blowing system, it comprises a plurality of data acquisition terminals, an information comparison module, a plurality of soot blowers and a controller. Figure 1
[0036] The plurality of data acquisition terminals are arranged in all different areas of the internal furnace of the boiler respectively, and are adapted to acquire the operation state data of the different areas of the internal furnace of the boiler in real time. The boiler can be a power plant boiler. The information comparison module is in signal connection with the plurality of data acquisition terminals, and is adapted to compare the operation state data with preset thresholds in real time to obtain the ash deposition degree of the different areas of the internal furnace of the boiler and the key ash deposition area whose operation state data exceeds the preset threshold. A plurality of soot blowers are arranged in the different areas of the internal furnace of the boiler respectively. The controller is in signal connection with the information comparison module and the plurality of soot blowers, and is adapted to control the soot blowers corresponding to the key ash deposition area to be started in real time to perform soot blowing operation on the key ash deposition area.
[0037] Specifically, the data acquisition terminal comprises an infrared flue gas temperature measuring module, an ash deposition monitoring module, a wind speed monitoring module, a wall temperature monitoring module and a desuperheating water monitoring module. The infrared flue gas temperature measuring module is adapted to monitor the flue gas temperature of the internal furnace of the boiler in real time. The ash deposition degree is determined by monitoring the change of the flue gas temperature of the internal furnace of the boiler. When the ash deposition is excessive, the heat cannot be effectively transferred, and the flue gas temperature will rise. The ash deposition monitoring module is adapted to monitor the ash deposition thickness and ash deposition density of the heating surface of the internal furnace of the boiler in real time. The ash deposition thickness and ash deposition density directly reflect the amount of ash deposition. When the ash deposition thickness or ash deposition density exceeds the preset threshold, the soot blower is controlled by the controller to perform soot blowing operation on the area. The wind speed monitoring module is adapted to monitor the wind speed and wind direction of the internal furnace of the boiler in real time. The wall temperature monitoring module is adapted to monitor the temperature of the wall of the heating surface of the internal furnace of the boiler in real time. Excessive ash deposition will hinder the heat conduction of the wall of the heating surface of the internal furnace of the boiler, causing the temperature of the wall of the heating surface of the internal furnace of the boiler to abnormally rise, and the change of the temperature of the wall of the heating surface of the internal furnace of the boiler is monitored in real time to indirectly verify the ash deposition degree. The desuperheating water monitoring module is adapted to monitor the flow of desuperheating water and the temperature of desuperheating water in real time. When the temperature of the superheated steam is abnormally high due to excessive ash deposition, the desuperheating water system adjusts the flow of desuperheating water and the temperature of desuperheating water, and the flow of desuperheating water and the temperature of desuperheating water are used to assist in determining the heat exchange efficiency of the heating surface of the internal furnace of the boiler.
[0038] More specifically, the infrared flue gas temperature measuring module is an infrared flue gas temperature measuring probe, the wall temperature monitoring module is a temperature measuring meter, and the wind speed monitoring module is an ultrasonic wind direction and wind speed sensor.
[0039] Specifically, the soot blower comprises: a sonic soot blower and a steam soot blower. The sonic soot blower is arranged in all different areas of the internal furnace of the boiler. The steam soot blower is arranged in all different areas of the internal furnace of the boiler; the sonic soot blower and the steam soot blower are adapted to alternately perform soot blowing operation on the key soot deposition area. The sonic soot blower removes loose soot deposition by high-frequency sonic vibration, and is suitable for large-area and light-to-moderate soot deposition area; the steam soot blower removes stubborn soot deposition and slag by high-pressure steam jet, and the alternation of the two can cover different types of soot deposition and improve the thoroughness of soot removal; avoid local wear caused by long-term action of a single soot blowing method, the sonic soot blower has no mechanical contact, the steam soot blower has strong pertinence, and the alternation can balance the stress of the heating surface and prolong the service life of the equipment.
[0040] Further, the steam soot blower is provided with a connected telescopic mechanism and a soot blowing nozzle, and the telescopic mechanism is adapted to drive the soot blowing nozzle to approach or move away from the place to be soot blown. The telescopic mechanism can make the soot blowing nozzle reach different positions inside the furnace of the boiler and directly reach the serious soot deposition area, that is, directly reach the key soot deposition area; and is especially suitable for cleaning soot in hidden parts such as deep parts of the furnace and gaps between heating surfaces.
[0041] Further, the soot blowing system also comprises: an upper computer, a central processing module and an information manager. The upper computer is signal connected with a plurality of data acquisition terminals and an information comparison module; the upper computer is adapted to perform noise reduction and format conversion processing on the running state data, and cooperates with the information comparison module to obtain the soot deposition degree of different areas of the internal furnace of the boiler and obtain the key soot deposition area whose soot deposition running state data exceeds the preset threshold value. The central processing module is signal connected with the upper computer through a communication module; the central processing module is adapted to cooperate with the information comparison module to obtain the soot deposition degree of different areas of the internal furnace of the boiler and obtain the key soot deposition area whose soot deposition running state data exceeds the preset threshold value. The information manager is signal connected with the upper computer through the communication module, and the information manager is signal connected with the central processing module; the information manager is adapted to store the running state data, soot blowing operation record and fault data in real time, and store them according to time, area and parameter type to form a historical database.
[0042] Specifically, the communication module comprises: 4G, 5G, Wi-Fi or industrial Ethernet.
[0043] Further, the central processing module is provided with a computing engine, which is adapted to statistically analyze the historical data in the historical database, generate a preset threshold value, and cooperate with the information comparison module to obtain the soot deposition degree of different areas of the internal furnace of the boiler and obtain the key soot deposition area whose soot deposition running state data exceeds the preset threshold value. The computing engine can be a high-performance computing engine.
[0044] Further, the soot blowing system also comprises a fault backup module, a transmission early warning unit and an early warning device. The fault backup module is signal connected with the information manager and the central processing module. The fault backup module is adapted to backup abnormal data, i.e. fault data. The transmission early warning unit is signal connected with the fault backup module and the central processing module. The transmission early warning unit is adapted to timely early warn the fault and transmit the fault data to the fault backup module for storage. The early warning device is signal connected with the transmission early warning unit. The early warning device is adapted to alarm when the transmission early warning unit sends an early warning signal.
[0045] Further, the data collection terminal and the soot blower located in the same area have a unified number.
[0046] The present application completes the monitoring of the internal state of the boiler during the soot blowing and cleaning process through the mutual cooperation of the plurality of data collection terminals, the central processing module and the fault backup module, thereby improving the safety of the boiler during use.
[0047] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.
Claims
1. A soot blowing system, characterized in that, include: Multiple data acquisition terminals are respectively arranged in all different areas of the furnace inside the boiler. The data acquisition terminals are suitable for acquiring the operating status data of different areas of the furnace inside the boiler in real time. The information comparison module is connected to multiple data acquisition terminals; the information comparison module is adapted to compare the operating status data with a preset threshold in real time to obtain the degree of ash accumulation in different areas of the boiler furnace and to identify key ash accumulation areas where the ash accumulation operating status data exceeds the preset threshold. Multiple soot blowers are installed in different areas of the furnace inside the boiler. The controller is signal-connected to the information comparison module and multiple soot blowers; the controller is adapted to control the activation of soot blowers corresponding to key ash accumulation areas in real time, so as to perform soot blowing operations on key ash accumulation areas.
2. The soot blowing system according to claim 1, characterized in that, The data acquisition terminal includes: Infrared flue gas temperature measurement module, suitable for real-time monitoring of flue gas temperature inside the boiler furnace; The ash accumulation monitoring module is suitable for real-time monitoring of the ash accumulation thickness and density on the heating surface of the furnace inside the boiler. The wind speed monitoring module is suitable for real-time monitoring of wind speed and direction inside the boiler furnace; The wall temperature monitoring module is suitable for real-time monitoring of the temperature of the heating surface wall inside the boiler furnace. The desuperheating water monitoring module is suitable for real-time monitoring of the flow rate and temperature of the desuperheating water.
3. The soot blowing system according to claim 2, characterized in that, The infrared flue gas temperature measurement module is an infrared flue gas temperature measurement probe; the wall temperature monitoring module is a temperature measuring meter; and the wind speed monitoring module is an ultrasonic wind direction and wind speed sensor.
4. The soot blowing system according to claim 1, characterized in that, The soot blower includes: Sonic soot blowers are installed in all different areas of the boiler's internal furnace. Steam soot blowers are installed in all different areas of the furnace inside the boiler; the sonic soot blowers and steam soot blowers are adapted to alternately blow soot on the key ash accumulation areas.
5. The soot blowing system according to claim 4, characterized in that, The steam soot blower is equipped with a connected telescopic mechanism and a soot blowing nozzle. The telescopic mechanism is adapted to move the soot blowing nozzle closer to or away from the area to be soot blown.
6. The soot blowing system according to any one of claims 1-5, characterized in that, Also includes: The host computer is connected to multiple data acquisition terminals and information comparison modules. The host computer is suitable for noise reduction and format conversion of the operating status data, and works with the information comparison module to obtain the degree of ash accumulation in different areas of the boiler furnace and to identify key ash accumulation areas where the ash accumulation operating status data exceeds a preset threshold. The central processing module is connected to the host computer via a communication module; the central processing module is adapted to work with the information comparison module to obtain the degree of ash accumulation in different areas of the boiler's internal furnace and to acquire key ash accumulation areas whose ash accumulation operation status data exceeds a preset threshold. The information manager is connected to the host computer via a communication module and is also connected to the central processing module. The information manager is adapted to store the operating status data, soot blowing operation records, and fault data in real time, and to classify and store them according to time, region, and parameter type to form a historical database.
7. The soot blowing system according to claim 6, characterized in that, The central processing module is equipped with a computing engine, which is suitable for statistical analysis of historical data in the historical database, generating preset thresholds, and working with the information comparison module to obtain the degree of ash accumulation in different areas of the boiler furnace and to identify key ash accumulation areas whose ash accumulation operation status data exceeds the preset threshold.
8. The soot blowing system according to claim 6, characterized in that, Also includes: The fault backup module is signal-connected to both the information manager and the central processing module; the fault backup module is suitable for backing up abnormal data. The transmission early warning unit is signal-connected to both the fault backup module and the central processing module. The transmission early warning unit is adapted to provide timely early warning of faults and transmit the fault data to the fault backup module for storage; An alarm device is connected to the transmission alarm unit and is adapted to sound an alarm when the transmission alarm unit issues an alarm fault signal.
9. The soot blowing system according to claim 6, characterized in that, The communication module includes: 4G, 5G, Wi-Fi or industrial Ethernet.
10. The soot blowing system according to any one of claims 1-5, characterized in that, Data acquisition terminals and soot blowers located in the same area have a unified number.