A hierarchical temperature control system for a biomass combustion boiler

Abstract

The application discloses a biomass combustion boiler hierarchical temperature control system, and relates to the technical field of temperature control systems, which comprises a boiler body, and a plurality of combustion cavities are arranged in the boiler body, characterized in that a temperature detection module, a feeding module and a temperature reduction module are arranged in each combustion cavity; the temperature detection module is configured to detect the real-time temperature in each combustion cavity; the feeding module is configured to add combustion materials into each combustion cavity; and the temperature reduction module is configured to reduce the temperature in each combustion cavity after being started; the temperature detection module, the feeding module and the temperature reduction module are connected with a main control module; the main control module receives the real-time temperature detection results of each combustion cavity by the temperature detection module; and the main control module controls the feeding module to add combustion materials into the corresponding combustion cavity to increase the temperature in the corresponding combustion cavity or controls the temperature reduction module to work to reduce the temperature in the corresponding combustion cavity according to the real-time temperature detection results. The application can accurately control the temperature of the multi-layer biomass combustion boiler.

Description

Technical Field

[0001] This application relates to the field of temperature control system technology, specifically a tiered temperature control system for a biomass combustion boiler. Background Technology

[0002] Biomass boilers are a type of boiler that uses biomass energy as fuel. Biomass boilers with multiple combustion chambers can perform staged combustion, thus improving heating efficiency. However, these multi-chamber biomass boilers require individual temperature control for each chamber. Traditional control methods often rely on manual temperature monitoring of each chamber, which presents safety and operational challenges. Therefore, a superior temperature control system is needed to ensure precise temperature control in multi-chamber biomass boilers. Summary of the Invention

[0003] The purpose of this application is to provide a tiered temperature control system for biomass combustion boilers to solve the technical problems mentioned above.

[0004] To achieve the above objectives, this application discloses the following technical solution: a multi-level temperature control system for a biomass combustion boiler, comprising a boiler body with multiple combustion chambers, characterized in that each combustion chamber is equipped with a temperature detection module, a feeding module, and a cooling module; the temperature detection module is configured to detect the real-time temperature within each combustion chamber; the feeding module is configured to add combustible material to each combustion chamber; and the cooling module is configured to lower the temperature within each combustion chamber upon activation. The temperature detection module, the feeding module, and the cooling module are respectively connected to a main control module. The main control module receives the real-time temperature detection results from the temperature detection module for each combustion chamber. Based on the real-time temperature detection results, the main control module controls the feeding module to add combustible material to the corresponding combustion chamber to raise the temperature, or controls the cooling module to lower the temperature within the corresponding combustion chamber.

[0005] Preferably, the feeding module includes:

[0006] The weighing unit is configured to weigh the combustible material to be fed into the corresponding combustion chamber;

[0007] The material quantity control unit is configured to control the amount of combustible material on the weighing unit.

[0008] Preferably, the cooling module includes:

[0009] A feed reduction unit is configured to remove the combustible material from the combustion chamber that needs to be cooled.

[0010] The physical cooling unit is configured to lower the temperature inside the combustion chamber that needs to be cooled through cooling measures, including spraying coolant or spraying cooling water.

[0011] Preferably, the cooling module further includes:

[0012] The intermittent operation control unit is configured to control the intermittent operation of the material reduction unit and the physical cooling unit, and to control the temperature detection module to detect the temperature of the corresponding combustion chamber between two consecutive operation processes.

[0013] Preferably, the material reduction unit is connected to a regenerative kiln, which is configured to store the heat generated by the combustion of the combustible material fed into the material reduction unit.

[0014] Preferably, each combustion chamber is connected to a regenerable kiln. When heating is performed, the main control module controls the regenerable kiln to deliver heat to the corresponding combustion chamber based on the real-time temperature detection results. After the heat is delivered, the module controls the temperature detection module to perform temperature detection and determines whether to control the regenerable kiln to continue delivering heat or to control the feeding module to add combustibles to the corresponding combustion chamber to raise the temperature of the corresponding combustion chamber based on the temperature detection results.

[0015] Preferably, the multi-level temperature control system for this biomass combustion boiler also includes a temperature control system module. The temperature control system module is configured to analyze the heating effect based on the combustion elements of the combustible material. The temperature control system module is connected to the main control module. Based on the analysis results of the temperature control system module, the main control module obtains the expected temperature in each combustion chamber in advance and provides temperature control suggestions based on the expected temperature.

[0016] As a preferred embodiment, the operating method of this type of tiered temperature control system for biomass combustion boilers includes:

[0017] A temperature control system is constructed, wherein the combustion elements in the temperature control system include the type of combustible material, the mass of the combustible material, and the calorific value per unit mass, and the temperature control system module is configured to analyze the heating effect based on the combustion elements of the combustible material.

[0018] The temperature monitoring module detects the temperature in each combustion chamber in real time. When the detected temperature is greater than the required temperature, the cooling module cools the corresponding combustion chamber. When the detected temperature is less than the required temperature, the feeding module adds fuel to the corresponding combustion chamber to raise the temperature.

[0019] The main control module, based on the combustion elements of the combustion materials placed in each combustion chamber, matches the corresponding analysis results in the temperature control system module to obtain the expected temperature in each combustion chamber, and provides a response strategy for whether to raise or lower the temperature required in the next stage.

[0020] Preferably, the temperature control system module is further configured to calculate the temperature difference based on the temperature detection value and temperature demand value in the combustion chamber, and to calculate the amount of fuel replenishment based on the combustion elements of the fuel in the corresponding combustion chamber. The main control module obtains the amount of fuel replenishment and controls the feeding module to replenish the fuel in the corresponding combustion chamber to raise the temperature.

[0021] Beneficial Effects: The tiered temperature control system for biomass combustion boilers disclosed in this application accurately acquires the temperature within each combustion chamber through a temperature detection module. Based on the temperature detection results, the main control module controls the feeding module or cooling module to heat or cool the corresponding combustion chamber, thereby achieving temperature control for each combustion chamber. During the control process, the intermittent cooling process ensures uniform temperature throughout the combustion chamber, resulting in excellent cooling performance. Simultaneously, the regenerative furnace allows for the collection of waste heat from the combustion chamber, improving energy utilization. Furthermore, the temperature control system module can predict the combustion temperature within the combustion chamber, enabling the development of heating or cooling strategies based on the required temperature, thus achieving better temperature control. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a structural block diagram of the tiered temperature control system for a biomass combustion boiler in an embodiment of this application;

[0024] Figure 2 This is a block diagram illustrating the working method of the tiered temperature control system for a biomass combustion boiler in this application embodiment. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] In this document, the term "comprising" is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0027] Example

[0028] refer to Figure 1 The illustrated multi-stage temperature control system for a biomass combustion boiler includes a boiler body with multiple combustion chambers inside.

[0029] Each combustion chamber is equipped with a temperature detection module, a feeding module, and a cooling module. The temperature detection module is configured to detect the real-time temperature in each combustion chamber, the feeding module is configured to add combustible material to each combustion chamber, and the cooling module is configured to lower the temperature in each combustion chamber upon activation.

[0030] The temperature detection module, feeding module, and cooling module are connected to the main control module. The main control module receives the real-time temperature detection results of each combustion chamber from the temperature detection module. Based on the real-time temperature detection results, the main control module controls the feeding module to add combustion materials to the corresponding combustion chamber to raise the temperature of the corresponding combustion chamber or controls the cooling module to work to lower the temperature of the corresponding combustion chamber.

[0031] Specifically, the feeding module includes a weighing unit and a material quantity control unit. The weighing unit is configured to weigh the combustible material to be fed into the corresponding combustion chamber; the material quantity control unit is configured to control the amount of combustible material on the weighing unit, and it can be a mechanical structure located above the weighing unit for holding and preventing the combustible material from entering.

[0032] Specifically, the cooling module includes: a feed reduction unit, a physical cooling unit, and an intermittent operation control unit. The feed reduction unit is configured to remove the combustible material from the combustion chamber that needs cooling; it can be installed at the location where the combustible material is placed within the combustion chamber for catching and removing it. The physical cooling unit is configured to lower the temperature within the combustion chamber through cooling measures, including spraying coolant or cooling water. The intermittent operation control unit is configured to control the intermittent operation of the feed reduction unit and the physical cooling unit. This can be achieved through a time-delay function implemented by a time control device such as a delay circuit, and it controls the temperature detection module to monitor the temperature of the corresponding combustion chamber between two consecutive operation cycles. The advantage of this configuration is that the intermittent cooling process ensures uniform temperature throughout the combustion chamber, resulting in good cooling performance.

[0033] In a preferred embodiment of this invention, the feed-reducing unit is connected to a regenerative kiln, which is configured to store the heat generated by the combustion of the combustible material fed into the feed-reducing unit. Specifically, the feed-reducing unit transports combustible material taken from the combustion chamber into the regenerative kiln for combustion, and the regenerative kiln stores the heat generated by the combustion. Furthermore, each combustion chamber is connected to the regenerative kiln. During heating, the main control module controls the regenerative kiln to deliver heat to the corresponding combustion chamber based on real-time temperature detection results. After heat delivery, the main control module controls the temperature detection module to perform temperature detection and determines whether to control the regenerative kiln to continue delivering heat or to control the feeding module to add combustible material to the corresponding combustion chamber to raise its temperature. In other words, when heating is required, the heat stored in the regenerative kiln is released into the corresponding combustion chamber for heating, and after heating, the main control module adaptively controls the feeding module to add combustible material to raise the temperature based on the detected real-time temperature.

[0034] As another preferred embodiment of this invention, the multi-level temperature control system for this biomass combustion boiler further includes a temperature control system module. This module is configured to analyze the heating effect based on the combustion elements of the combustible material. The temperature control system module is connected to the main control module. Based on the analysis results from the temperature control system module, the main control module pre-obtains the expected temperature within each combustion chamber and provides temperature control recommendations based on this expected temperature. The temperature control system module is also configured to calculate the temperature difference based on the detected temperature value and the required temperature value within the combustion chamber, and to calculate the amount of combustible material to be replenished based on the combustion elements of the combustible material in the corresponding combustion chamber. The main control module obtains this replenishment amount and controls the feeding module to replenish combustible material into the corresponding combustion chamber to raise the temperature. Based on this embodiment, as... Figure 2 As shown, the working method of this type of tiered temperature control system for biomass combustion boilers includes:

[0035] S1 - Construct a temperature control system. The combustion elements in the temperature control system include the type of combustible material, the mass of combustible material, and the calorific value per unit mass. The temperature control system module is configured to analyze the heating effect based on the combustion elements of the combustible material.

[0036] The S2 temperature monitoring module monitors the temperature in each combustion chamber in real time. When the detected temperature is higher than the required temperature, the cooling module cools the corresponding combustion chamber. Under high-temperature conditions, when the temperature needs to decrease slowly, the physical cooling unit sprays coolant into the combustion chamber. When the temperature needs to decrease significantly, the feed unit removes some of the combustible material, thus lowering the temperature. When the temperature needs to decrease significantly and rapidly, both the physical cooling unit and the feed unit are activated simultaneously for dual cooling. When the detected temperature is lower than the required temperature, the feeding module adds combustible material to the corresponding combustion chamber to raise the temperature. Specifically, the temperature control system module calculates the amount of combustible material to be added based on the combustion elements of the combustible material in the corresponding combustion chamber and feeds the corresponding amount of combustible material into the combustion chamber through the feeding module to raise the temperature.

[0037] The S3 main control module, based on the combustion elements of the combustion materials placed in each combustion chamber, matches the corresponding analysis results in the temperature control system module to obtain the expected temperature in each combustion chamber, and provides corresponding strategies for raising or lowering the temperature required in the next stage.

[0038] The tiered temperature control system for biomass combustion boilers disclosed in this application accurately acquires the temperature within each combustion chamber through a temperature detection module. Based on the temperature detection results, the main control module controls the feeding module or cooling module to heat or cool the corresponding combustion chamber, thereby achieving temperature control for each combustion chamber. Simultaneously, through the configuration of the temperature control system module, the combustion temperature within the combustion chamber can be estimated, allowing for the formulation of heating or cooling strategies based on the required subsequent temperature, thus achieving better temperature control.

[0039] In the embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0040] Those skilled in the art will understand that all or part of the steps of the above embodiments can be implemented by hardware or by a program instructing related hardware. The program can be stored in a computer-readable storage medium, such as a read-only memory, a disk, or an optical disk.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of this application and is not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A multi-stage temperature control system for a biomass combustion boiler, comprising a boiler body, wherein the boiler body contains multiple combustion chambers, characterized in that, Each combustion chamber is equipped with a temperature detection module, a feeding module, and a cooling module. The temperature detection module is configured to detect the real-time temperature in each combustion chamber. The feeding module is configured to add combustible material to each combustion chamber. The cooling module is configured to lower the temperature in each combustion chamber after activation. The temperature detection module, the feeding module, and the cooling module are respectively connected to the main control module. The main control module receives the real-time temperature detection results of the temperature detection module in each combustion chamber. Based on the real-time temperature detection results, the main control module controls the feeding module to add combustion materials to the corresponding combustion chamber to raise the temperature of the corresponding combustion chamber or controls the cooling module to work to lower the temperature of the corresponding combustion chamber. The cooling module includes a feed reduction unit and a physical cooling unit. The feed reduction unit is configured to remove the combustible material from the combustion chamber that needs cooling. The physical cooling unit is configured to lower the temperature in the combustion chamber through cooling measures, including spraying coolant or spraying cooling water. The main control module is configured to: control only the physical cooling unit when the detected temperature is higher than the required temperature and a slow decrease is needed; control only the feed reduction unit to remove part of the combustible material when a large decrease is needed; and control both the physical cooling unit and the feed reduction unit to operate simultaneously when a large and rapid decrease is needed.

2. The tiered temperature control system for biomass combustion boilers according to claim 1, characterized in that, The feeding module includes: The weighing unit is configured to weigh the combustible material to be fed into the corresponding combustion chamber; The material quantity control unit is configured to control the amount of combustible material on the weighing unit.

3. The tiered temperature control system for biomass combustion boilers according to claim 1, characterized in that, The cooling module also includes: The intermittent operation control unit is configured to control the intermittent operation of the material reduction unit and the physical cooling unit, and to control the temperature detection module to detect the temperature of the corresponding combustion chamber between two consecutive operation processes.

4. The tiered temperature control system for biomass combustion boilers according to claim 1, characterized in that, The material reduction unit is connected to the heat storage kiln, which is configured to store the heat generated by the combustion of the combustible material fed into the material reduction unit.

5. The tiered temperature control system for biomass combustion boilers according to claim 1, characterized in that, Each combustion chamber is connected to a regenerative kiln. During the heating process, the main control module controls the regenerative kiln to deliver heat to the corresponding combustion chamber based on the real-time temperature detection results. After the heat is delivered, the module controls the temperature detection module to perform temperature detection and determines whether to control the regenerative kiln to continue delivering heat or to control the feeding module to add combustibles to the corresponding combustion chamber to raise the temperature of the corresponding combustion chamber based on the temperature detection results.

6. The tiered temperature control system for biomass combustion boilers according to claim 1, characterized in that, The multi-level temperature control system for this biomass combustion boiler also includes a temperature control system module. The temperature control system module is configured to analyze the heating effect based on the combustion elements of the combustible material. The temperature control system module is connected to the main control module. Based on the analysis results of the temperature control system module, the main control module obtains the expected temperature in each combustion chamber in advance and provides temperature control suggestions based on the expected temperature.

7. The staged temperature control system for biomass combustion boilers according to claim 6, characterized in that, The working method of this type of tiered temperature control system for biomass combustion boilers includes: A temperature control system is constructed, wherein the combustion elements in the temperature control system include the type of combustible material, the mass of the combustible material, and the calorific value per unit mass, and the temperature control system module is configured to analyze the heating effect based on the combustion elements of the combustible material. The temperature monitoring module detects the temperature in each combustion chamber in real time. When the detected temperature is greater than the required temperature, the cooling module cools the corresponding combustion chamber. When the detected temperature is less than the required temperature, the feeding module adds fuel to the corresponding combustion chamber to raise the temperature. The main control module, based on the combustion elements of the combustion materials placed in each combustion chamber, matches the corresponding analysis results in the temperature control system module to obtain the expected temperature in each combustion chamber, and provides a response strategy for whether to raise or lower the temperature required in the next stage.

8. The staged temperature control system for biomass combustion boilers according to claim 7, characterized in that, The temperature control system module is also configured to calculate the temperature difference based on the temperature detection value and temperature demand value in the combustion chamber, and to calculate the amount of fuel replenishment based on the combustion elements of the fuel in the corresponding combustion chamber. The main control module obtains the amount of fuel replenishment and controls the feeding module to replenish the fuel in the corresponding combustion chamber to raise the temperature.

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