Boiler bottom air inlet volume adjustment method and device

Abstract

The present invention provides a method and device for adjusting the air intake volume of a boiler bottom, and belongs to the technical field of boiler control in coal-fired power plants. A dry slag discharger is arranged below the bottom of the boiler, and a damper for adjusting the air intake volume is arranged on the dry slag discharger. The method comprises: obtaining the air intake velocity, air intake temperature, and external slag temperature of the dry slag discharger at the slag discharge end, the air outlet temperature, the internal slag temperature, and the steel belt temperature of the dry slag discharger at the slag discharge end, and the slag quality on the dry slag discharger; determining the heat release of the slag based on the external slag temperature, the internal slag temperature, and the slag quality; determining the heat absorption of the air based on the air intake velocity, the air intake temperature, and the air outlet temperature; determining the air demand based on the steel belt temperature, the slag heat release, and the air absorption; and adjusting the opening of the damper so that the air intake volume of the boiler bottom meets the air demand. The present invention ensures the boiler efficiency, improves the safety and reliability of the stable operation of the boiler, and improves the service life of the slag discharger by accurately controlling the air intake volume of the boiler bottom.

Description

Technical Field

[0001] The present invention relates to the technical field of boiler control in coal-fired power plants, and in particular to a method for adjusting the air intake volume at the bottom of a boiler, a device for adjusting the air intake volume at the bottom of a boiler, an electronic device and a readable storage medium. Background Art

[0002] Thermal power plants need to discharge a large amount of ash during the power generation process. According to the slag discharge state, it can be divided into: wet slag discharge system and dry slag discharge system. Compared with the wet slag discharge system, the dry slag discharge system has the advantages of water saving, energy saving, and ash resource utilization. However, from the current application effect, the dry slag discharge system is prone to air leakage at the bottom of the furnace. It can be seen that the tightness of the boiler bottom seal is crucial to the safety and economic operation of the boiler.

[0003] The slag removal process of the dry slag removal system is as follows: the slag after the boiler is burned falls from the furnace to the slag removal device at the bottom, is pre-cooled through the hydraulic shut-off door, and is pre-crushed to a slag with a particle size of no more than 200mm. It is transported to the slag crusher by the steel belt conveyor, and then sent to the slag bin by the bucket elevator. However, due to the micro-negative pressure operation mode in the boiler, the pressure of the bottom section of the boiler is about -100Pa. Under the action of the pressure difference, part of the cold air is installed with air inlets from the side panels and the top plate of the steel belt machine box body to cool the slag and steel belt; the other part is the leakage of the slag crusher bucket elevator system from the tail of the dry slag machine. The quantitative cold air is heated by the slag and enters the furnace, which can reduce the physical heat loss of the boiler ash and improve the thermal efficiency of the boiler; but excessive cold air entering the furnace will lead to an increase in the amount of unorganized air leakage in the boiler, as well as a decrease in the primary and secondary air volumes, which will increase the boiler exhaust temperature and reduce the boiler efficiency. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a method and device for regulating the air inlet volume at the bottom of a boiler, so as to at least solve the above-mentioned problem that excessive cold air enters the furnace, which will lead to an increase in the unorganized air leakage of the boiler, and a decrease in the primary and secondary air volumes, thereby increasing the boiler exhaust temperature and reducing the boiler efficiency.

[0005] In order to achieve the above-mentioned object, the first aspect of the present invention provides a method for adjusting the air intake volume of a boiler furnace bottom, wherein a dry slag discharger is arranged below the boiler furnace bottom, a slag inlet end of the dry slag discharger is connected to the boiler furnace bottom, and a damper for adjusting the air intake volume is arranged at a slag outlet end of the dry slag discharger, and the method comprises:

[0006] Obtain the air inlet velocity, air inlet temperature, and external slag temperature at the slag discharge end of the dry slag discharger, obtain the air outlet temperature, internal slag temperature, and steel belt temperature at the slag inlet end of the dry slag discharger, and obtain the slag mass on the dry slag discharger;

[0007] Determining the heat release of slag based on the outer slag temperature, the inner slag temperature and the slag mass;

[0008] Determining the amount of air absorbed based on the inlet air speed, the inlet air temperature, and the outlet air temperature;

[0009] Determining the air demand based on the steel strip temperature, the slag heat release and the air heat absorption;

[0010] The opening of the damper is adjusted so that the air intake at the bottom of the boiler meets the air demand.

[0011] Optionally, determining the heat release of the slag based on the outer slag temperature, the inner slag temperature and the slag mass includes:

[0012] The heat release of slag is calculated using the following formula:

[0013]

[0014] in, Release heat to the slag; is the slag mass; is the correction factor; is the internal slag temperature; is the external slag temperature.

[0015] Optionally, determining the amount of air absorbed heat based on the inlet air speed, the inlet air temperature, and the outlet air temperature includes:

[0016] The air heat absorption is calculated using the following formula:

[0017]

[0018] in, Absorbs heat from the air; is the air flow correction factor; is the inlet wind speed; is the cross-sectional area of ​​the slag discharge end of the dry slag discharger; is the correction factor; is the inlet air temperature; The outlet air temperature.

[0019] Optionally, determining the air requirement based on the temperature of the steel strip, the heat released by the slag, and the heat absorbed by the air includes:

[0020] The air demand is calculated using the following formula:

[0021]

[0022] in, is the air demand; Absorbs heat from the air, Release heat to the slag; is the correction factor; is the temperature of steel strip; is the preset reference temperature; is the air flow correction factor.

[0023] Optionally, the method further includes:

[0024] When the temperature of the steel strip is greater than a preset temperature threshold, an alarm is generated and the opening of the damper is adjusted to a preset opening.

[0025] A second aspect of the present invention provides a boiler furnace bottom air intake regulating device, wherein a dry slag discharger is arranged below the boiler furnace bottom, a slag inlet end of the dry slag discharger is connected to the boiler furnace bottom, and a damper for regulating the air intake amount is arranged at a slag outlet end of the dry slag discharger, and the device comprises:

[0026] The data acquisition module is used to obtain the air inlet velocity, air inlet temperature, and external slag temperature at the slag discharge end of the dry slag discharger, the air outlet temperature, internal slag temperature, and steel belt temperature at the slag inlet end of the dry slag discharger, and the slag quality on the dry slag discharger;

[0027] a slag heat release determination module, used to determine the slag heat release based on the outer slag temperature, the inner slag temperature and the slag mass;

[0028] an air heat absorption determination module, used to determine the air heat absorption based on the inlet air speed, the inlet air temperature and the outlet air temperature;

[0029] An air demand determination module, used to determine the air demand based on the steel strip temperature, the slag heat release and the air heat absorption;

[0030] The opening adjustment module is used to adjust the opening of the damper so that the air intake at the bottom of the boiler meets the air demand.

[0031] Optionally, the air demand determination module is specifically used to:

[0032] The air demand is calculated using the following formula:

[0033]

[0034] in, is the air demand; Absorbs heat from the air, Release heat to the slag; is the correction factor; is the temperature of steel strip; is the preset reference temperature; is the air flow correction factor.

[0035] Optionally, the device further comprises:

[0036] The alarm adjustment module is used to generate an alarm and adjust the opening of the air door to a preset opening when the temperature of the steel strip is greater than a preset temperature threshold.

[0037] A third aspect of the present invention provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the above-mentioned boiler bottom air inlet volume adjustment method when executing the computer program.

[0038] On the other hand, the present invention provides a machine-readable storage medium having instructions stored thereon, the instructions being used to enable a machine to execute the above-mentioned method for adjusting the air intake volume of a boiler bottom.

[0039] This technical solution determines the air demand by accurately calculating the heat released by the slag and the heat absorbed by the air, thereby adjusting the opening of the air door to adjust the amount of air entering the furnace so that the amount of air entering the furnace bottom matches the air demand. By accurately controlling the air intake at the bottom of the boiler, the physical heat loss of the boiler ash is reduced, the boiler efficiency is guaranteed, the safety and reliability of the stable operation of the boiler are improved, and the steel belt temperature of the slag discharger is ensured to be within the preset range, thereby increasing the service life of the slag discharger.

[0040] Other features and advantages of the embodiments of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present invention, but do not constitute a limitation on the embodiments of the present invention. In the accompanying drawings:

[0042] Figure 1 It is a flow chart of the boiler bottom air inlet volume adjustment method provided by the present invention;

[0043] Figure 2 It is a schematic diagram of the connection structure between the boiler and the dry slag discharger provided by the present invention;

[0044] Figure 3 The present invention is a schematic structural diagram of a boiler bottom air inlet volume regulating device.

[0045] Description of Reference Numerals

[0046] 10-data acquisition module; 20-slag heat release determination module;

[0047] 30-air heat absorption determination module; 40-air demand determination module;

[0048] 50-Opening adjustment module. DETAILED DESCRIPTION

[0049] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0050] Figure 1 It is a flow chart of the boiler bottom air inlet volume adjustment method provided by the present invention; Figure 2 It is a schematic diagram of the connection structure between the boiler and the dry slag discharger provided by the present invention; Figure 3 The present invention is a schematic structural diagram of a boiler bottom air inlet volume regulating device.

[0051] Example 1

[0052] like Figure 2 As shown, in this embodiment, a dry slag discharger is arranged below the bottom of the boiler, the slag inlet end of the dry slag discharger is connected to the bottom of the boiler, and the slag outlet end of the dry slag discharger is provided with a damper for adjusting the air intake. The dry slag discharger is a slag treatment device for the bottom of the pulverized coal furnace, which is used to cool and transport the hot slag. The slag well and slag bin and other equipment are arranged before and after it to form a complete set of dry slag discharge system, realizing the entire bottom slag treatment process of: collection → pre-crushing → transportation and cooling → crushing → storage → regular discharge. The dry slag discharger is also called a dry slag remover, or dry slag machine for short. The slag after the combustion of the boiler falls from the furnace to the steel belt of the dry slag discharger at the bottom. The steel belt is connected end to end, and its running direction is from the slag inlet end of the dry slag discharger to the slag outlet end of the dry slag discharger. The height of the slag outlet end of the dry slag discharger is higher than the height of the slag inlet end of the dry slag discharger. The slag after the combustion of the boiler falls from the furnace to the steel belt at the slag inlet end of the dry slag discharger at the bottom, and is transported from the steel belt to the slag outlet end of the dry slag discharger. During the transportation process, the air damper at the slag outlet end of the dry slag discharger opens a certain opening, allowing air to enter the dry slag discharger and take away the heat emitted by the slag on the steel belt, reducing the steel belt and slag, heating the air, and the heated air enters the furnace through the bottom of the boiler furnace to assist the furnace combustion and improve the combustion efficiency. Among them, the air damper can also be set as a pneumatic valve, an electric valve, etc. to achieve air intake adjustment.

[0053] like Figure 1 As shown, an embodiment of the present invention provides a method for adjusting the air inlet volume of a boiler bottom, the method comprising:

[0054] Step 1, obtaining the air inlet velocity, air inlet temperature, and external slag temperature at the slag discharge end of the dry slag discharger, obtaining the air outlet temperature, internal slag temperature, and steel belt temperature at the slag inlet end of the dry slag discharger, and obtaining the slag mass on the dry slag discharger;

[0055] Specifically, in this embodiment, Figure 2 Taking the dry slag discharger and boiler connection structure shown as an example, a wind speed sensor is set at the wind speed measuring point of the slag discharge end of the dry slag discharger to obtain the inlet wind speed; a temperature sensor is set at the external wind temperature measuring point of the slag discharge end of the dry slag discharger to obtain the inlet air temperature; a temperature sensor is set at the external slag temperature infrared measuring point of the slag discharge end of the dry slag discharger to obtain the external slag temperature of the slag on the steel belt; a temperature sensor is set at the internal wind temperature measuring point of the slag inlet end of the dry slag discharger to obtain the outlet air temperature; a temperature sensor is set at the internal slag temperature infrared measuring point of the slag inlet end of the dry slag discharger to obtain the internal slag temperature of the slag on the steel belt; a temperature sensor is set at the steel belt temperature measuring point of the slag inlet end of the dry slag discharger to obtain the steel belt temperature, wherein the specific setting positions of the temperature sensor and the wind speed sensor can be determined according to the actual use environment. To ensure the accuracy of the data, they are theoretically set at both ends of the slag inlet end and the slag discharge end of the dry slag discharger. The measuring points can be designed as a single point or several points, and can also be designed as a layout grid temperature measurement method. Both the temperature sensor and the wind speed sensor can have a certain high temperature resistance performance, and the wind speed sensor can be set as an anemometer.

[0056] The quality of slag on the dry slag discharger can be measured by a weighing device, or calculated by adding the amount of coal to the boiler. The high temperature weighing sensor can be set in the dry slag discharger for measurement by a weighing device. The high temperature weighing sensor has the same strain measurement principle as the resistance strain type weighing sensor at room temperature. A mechanical force is applied to the weighing sensor to cause a slight deformation in the center of the elastic body. This slight deformation causes the resistance of the strain gauge glued to the elastic measuring body to change, which is converted into an electrical signal for measurement through a Wheatstone bridge. The main differences are: the high temperature weighing sensor uses an automatic compensation high temperature strain gauge, high temperature resistant adhesive, high temperature resistant solder and high temperature resistant special cable, uses a computer automatic acquisition system for temperature compensation, uses a computer controlled continuous method, automatically heats and loads, and uses special manufacturing processes and special compensation components to ensure that it maintains the accuracy of the high temperature weighing sensor in the harsh operating temperature environment, long-term high temperature heat radiation, environmental temperature gradient or transient change, and ensures that it is stable and reliable. The following calculation formula can be used to calculate the amount of coal added to the boiler: ,in, is the slag mass; The quality of coal; is the ash mass percentage; is the percentage of ash in slag to the total ash of coal fired; is the combustible content in the slag; more specifically, in the embodiment, The value of is 20%; The value of is 35%; The value is 20%. The above calculation formula is determined by experience or by analyzing and fitting the historical data of the amount of coal burned and the slag remaining after combustion.

[0057] Step 2: determining the heat release of the slag based on the outer slag temperature, the inner slag temperature and the slag mass;

[0058] Specifically, in this embodiment, the heat release of the slag is calculated using the following calculation formula:

[0059]

[0060] in, Release heat to the slag; is the slag mass; is the correction factor; is the internal slag temperature; is the external slag temperature.

[0061] More specifically, the slag falls from the furnace onto the steel belt of the dry slag discharger. At this time, the temperature of the slag is relatively high, which corresponds to the internal slag temperature. As the dry slag discharger transports the slag to the slag discharge end of the dry slag discharger, the temperature of the slag itself decreases due to the heat absorption of the air during the transportation process, which corresponds to the external slag temperature. The total heat release of the slag can be determined by the temperature changes before and after, combined with the quality of the slag.

[0062] Step 3: determining the amount of heat absorbed by the air based on the inlet air speed, the inlet air temperature and the outlet air temperature;

[0063] Specifically, in this embodiment, the air heat absorption is calculated using the following formula:

[0064]

[0065] in, Absorbs heat from the air; is the air flow correction factor; is the inlet wind speed; is the cross-sectional area of ​​the slag discharge end of the dry slag discharger; is the correction factor; is the inlet air temperature; The outlet air temperature.

[0066] More specifically, the air enters the dry slag discharger from the air gate. At this time, the air temperature is relatively low, which corresponds to the inlet air temperature. As the air moves to the bottom of the boiler, it absorbs heat during the movement, and the air temperature itself increases, which corresponds to the outlet air temperature. The total heat absorbed by the air can be determined by the changes in air temperature and the air flow rate.

[0067] Normally, the proportion of moisture in the air is very small and can be generally ignored. The dry air density under standard conditions is 1.293 kg / m³. In the implementation method, the unit of the cross-sectional area is square meters. Therefore, the air volume flow rate is .

[0068] Step 4: determining the air demand based on the temperature of the steel strip, the heat released by the slag and the heat absorbed by the air;

[0069] Specifically, in this embodiment, the air demand is calculated using the following formula:

[0070]

[0071] in, is the air demand; Absorbs heat from the air, Release heat to the slag; is the correction factor; is the temperature of steel strip; is the preset reference temperature; is the air flow correction factor.

[0072] Specifically, under normal circumstances, the heat released by slag is usually not completely matched with the heat absorbed by air, because the slag is placed on the steel belt, and the steel belt will also absorb heat during the process of conveying the slag. Therefore, when using the heat released by slag and the heat absorbed by air to determine the air demand, it is necessary to consider the change in the temperature of the steel belt, so as to ensure that the air demand can be calculated more accurately. In this embodiment, It is a preset reference temperature, which is determined by experience or historical data based on the optimal operating temperature of the steel strip.

[0073] Step 5: Adjust the opening of the damper so that the air intake at the bottom of the boiler meets the air demand.

[0074] Specifically, the air demand calculated by the above calculation method can be a positive value or a negative value. When the air demand is a positive value, it means that the amount of gas entering the bottom of the boiler is insufficient, and the controller increases the opening of the damper so that the air intake at the bottom of the boiler meets the air demand; when the air demand is a negative value, it means that the amount of gas entering the bottom of the boiler is excessive, and the controller reduces the opening of the damper so that the air intake at the bottom of the boiler meets the air demand.

[0075] More specifically, in the process of increasing and decreasing the damper opening, the damper opening is controlled according to the preset damper variation coefficient. The damper opening, speed and angle can all be controlled.

[0076] Furthermore, the method further comprises:

[0077] When the temperature of the steel strip is greater than a preset temperature threshold, an alarm is generated and the opening of the damper is adjusted to a preset opening.

[0078] Specifically, in this embodiment, in order to further ensure that the temperature of the steel belt does not exceed the optimal working temperature during the operation of the dry slag discharger, so as to improve the service life of the dry slag discharger, when the temperature of the steel belt is greater than the preset temperature threshold, an alarm is generated to issue a warning; at the same time, the opening of the air door is adjusted to the preset opening, and the air intake is increased to reduce the temperature of the steel belt.

[0079] Example 2

[0080] like Figure 3 As shown, an embodiment of the present invention provides a boiler bottom air inlet volume regulating device, the device comprising:

[0081] The data acquisition module 10 is used to obtain the air inlet velocity, air inlet temperature, and external slag temperature at the slag discharge end of the dry slag discharger, the air outlet temperature, internal slag temperature, and steel belt temperature at the slag inlet end of the dry slag discharger, and the slag quality on the dry slag discharger;

[0082] A slag heat release determination module 20, configured to determine the slag heat release based on the outer slag temperature, the inner slag temperature and the slag mass;

[0083] The air heat absorption determination module 30 is used to determine the air heat absorption based on the inlet air speed, the inlet air temperature and the outlet air temperature;

[0084] An air demand determination module 40, configured to determine the air demand based on the steel strip temperature, the slag heat release and the air heat absorption;

[0085] The opening adjustment module 50 is used to adjust the opening of the damper so that the air intake at the bottom of the boiler meets the air demand.

[0086] Furthermore, the air demand determination module 40 is specifically used for:

[0087] The air demand is calculated using the following formula:

[0088]

[0089] in, is the air demand; Absorbs heat from the air, Release heat to the slag; is the correction factor; is the temperature of steel strip; is the preset reference temperature; is the air flow correction factor.

[0090] Furthermore, the device also includes:

[0091] The alarm adjustment module is used to generate an alarm and adjust the opening of the air door to a preset opening when the temperature of the steel strip is greater than a preset temperature threshold.

[0092] Example 3

[0093] An embodiment of the present invention further provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the above-mentioned boiler bottom air inlet volume adjustment method when executing the computer program.

[0094] Example 4

[0095] The embodiment of the present invention further provides a readable storage medium, on which instructions are stored, and the instructions are used to enable a machine to execute the above-mentioned boiler bottom air inlet volume adjustment method.

[0096] Those skilled in the art will understand that all or part of the steps in the method for implementing the above-mentioned embodiments can be completed by instructing the relevant hardware through a program, and the program is stored in a storage medium, including several instructions for making a single-chip microcomputer, a chip or a processor execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0097] The optional embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above embodiments. Within the technical concept of the embodiments of the present invention, the technical scheme of the embodiments of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the embodiments of the present invention. It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the embodiments of the present invention will not further describe various possible combinations.

[0098] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the embodiments of the present invention, they should also be regarded as the contents disclosed in the embodiments of the present invention.

Claims

1. A method for adjusting the air intake volume of a boiler furnace bottom, wherein a dry slag discharger is arranged below the boiler furnace bottom, the slag inlet end of the dry slag discharger is connected to the boiler furnace bottom, and the slag outlet end of the dry slag discharger is provided with a damper for adjusting the air intake volume, characterized in that: The method comprises: Obtain the air inlet velocity, air inlet temperature, and external slag temperature at the slag discharge end of the dry slag discharger, obtain the air outlet temperature, internal slag temperature, and steel belt temperature at the slag inlet end of the dry slag discharger, and obtain the slag mass on the dry slag discharger; Determining the heat release of slag based on the outer slag temperature, the inner slag temperature and the slag mass; Determining the amount of air absorbed based on the inlet air speed, the inlet air temperature, and the outlet air temperature; Determining the air demand based on the steel strip temperature, the slag heat release and the air heat absorption; Adjusting the opening of the damper so that the air intake at the bottom of the boiler meets the air demand; Wherein, determining the air demand based on the temperature of the steel strip, the heat released by the slag and the heat absorbed by the air comprises: The air demand is calculated using the following formula: in, is the air demand; Absorbs heat from the air, Release heat to the slag; is the correction factor; is the temperature of steel strip; is the preset reference temperature; is the air flow correction factor.

2. The method for adjusting the air volume at the bottom of a boiler according to claim 1, characterized in that: Determining the heat release of slag based on the outer slag temperature, the inner slag temperature and the slag mass includes: The heat release of slag is calculated using the following formula: in, Release heat to the slag; is the slag mass; is the correction factor; is the internal slag temperature; is the external slag temperature.

3. The method for adjusting the air volume at the bottom of a boiler according to claim 1, characterized in that: Determining the amount of heat absorbed by air based on the inlet air speed, the inlet air temperature, and the outlet air temperature includes: The air heat absorption is calculated using the following formula: in, Absorbs heat from the air; is the air flow correction factor; is the inlet wind speed; is the cross-sectional area of ​​the slag discharge end of the dry slag discharger; is the correction factor; is the inlet air temperature; The outlet air temperature.

4. The method for adjusting the air volume at the bottom of a boiler according to claim 1, characterized in that: The method further comprises: When the temperature of the steel strip is greater than a preset temperature threshold, an alarm is generated and the opening of the damper is adjusted to a preset opening.

5. A boiler furnace bottom air inlet volume regulating device, wherein a dry slag discharger is arranged below the boiler furnace bottom, the slag inlet end of the dry slag discharger is connected to the boiler furnace bottom, and the slag outlet end of the dry slag discharger is provided with a damper for regulating the air inlet volume, characterized in that: The device comprises: The data acquisition module is used to obtain the air inlet velocity, air inlet temperature, and external slag temperature at the slag discharge end of the dry slag discharger, the air outlet temperature, internal slag temperature, and steel belt temperature at the slag inlet end of the dry slag discharger, and the slag quality on the dry slag discharger; a slag heat release determination module, used to determine the slag heat release based on the outer slag temperature, the inner slag temperature and the slag mass; an air heat absorption determination module, used to determine the air heat absorption based on the inlet air speed, the inlet air temperature and the outlet air temperature; An air demand determination module, used to determine the air demand based on the steel strip temperature, the slag heat release and the air heat absorption; An opening adjustment module is used to adjust the opening of the damper so that the air intake at the bottom of the boiler meets the air demand; Wherein, the air demand determination module is specifically used for: The air demand is calculated using the following formula: in, is the air demand; Absorbs heat from the air, Release heat to the slag; is the correction factor; is the temperature of steel strip; is the preset reference temperature; is the air flow correction factor.

6. The boiler bottom air inlet volume regulating device according to claim 5, characterized in that: The device also includes: The alarm adjustment module is used to generate an alarm and adjust the opening of the air door to a preset opening when the temperature of the steel strip is greater than a preset temperature threshold.

7. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the boiler bottom air inlet volume adjustment method described in any one of claims 1-4 is implemented.

8. A readable storage medium having instructions stored thereon, the instructions being used to enable a machine to execute the boiler bottom air inlet volume regulating method according to any one of claims 1 to 4.

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