Burner self-adjusting control system

Abstract

The invention relates to the technical field of industrial boilers, in particular to a burner self-adjusting control system which comprises a burner, a controller, an air door servo motor, a boiler, a chimney, a flue gas data acquisition point, a temperature sensor and a carbon monoxide sensor. The combustor is mounted at an inlet of the boiler; a controller and an air door servo motor are arranged on the combustor; a chimney is arranged at the tail end of the boiler, two flue gas data acquisition points are arranged on the chimney, and a temperature sensor and a carbon monoxide sensor are arranged in the two flue gas data acquisition points respectively. The smoke exhaust temperature is controlled to be stable, the content of carbon monoxide in smoke is controlled to enable combustion to be sufficient, and the rising and falling trend is judged to avoid errors.

Description

Technical Field

[0001] The invention relates to the technical field of industrial boilers, and in particular to a burner self-regulating control system. Background Art

[0002] As an important component of industrial boilers, burners have the function of releasing fuel energy into heat energy. At the same time, they also produce flue gas pollutants. With the improvement of environmental protection requirements, low-nitrogen gas burners are also widely used. The nozzle structure of the gas burner plays a decisive role in the emission of pollutants generated during the combustion process. The design and processing level of the burner nozzle structure determines the combustion load required in production and safe and stable boiler operation.

[0003] During the operation of the current burner, the operating state changes due to environmental changes or changes in gas pressure components, which will cause the combustion to be suboptimal and carbon monoxide to be produced, thereby reducing the operating stability. In order to maintain the best combustion state and ensure the stable and safe operation of the burner, it is a problem that designers need to solve. Summary of the invention

[0004] The purpose of the present invention is to solve the above-mentioned shortcomings in the prior art, and to propose a burner self-regulating control system, which applies the control and comparison of flue gas temperature and carbon monoxide content to the burner control system, aiming to solve the problems of unstable operation of common boiler gas burners.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] Design a burner self-regulating control system, which includes a burner, a controller, a damper servo motor, a boiler, a chimney, a flue gas data collection point, a temperature sensor, and a carbon monoxide sensor;

[0007] The burner is installed at the boiler inlet;

[0008] The burner is provided with a controller and a damper servo motor;

[0009] A chimney is provided at the end of the boiler, and two flue gas data collection points are provided on the chimney. A temperature sensor and a carbon monoxide sensor are respectively provided in the two flue gas data collection points.

[0010] In detail, the controller is used to control the overall operation of the burner and receive feedback signals to issue commands to the gas actuator.

[0011] In detail, the damper servo motor is used to receive commands from the controller and drive the damper to rotate.

[0012] In detail, the temperature sensor and the carbon monoxide sensor are connected to the controller via cables to transmit signals.

[0013] In detail, the temperature sensor is used to detect the smoke temperature in the chimney and transmit it to the controller.

[0014] In detail, the carbon monoxide sensor is used to detect the carbon monoxide content in the flue gas in the chimney and transmit it to the controller.

[0015] The design scheme proposed by the present invention has the following beneficial effects during application:

[0016] 1. Control the exhaust temperature to make it stable, control the carbon monoxide content in the flue gas to ensure complete combustion, and determine the rising and falling trends to avoid errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 It is the control logic diagram of the present invention.

[0019] In the figure: 1. Burner; 2. Controller; 3. Damper servo motor; 4. Boiler; 5. Chimney; 6. Flue gas data collection point; 7. Temperature sensor; 8. Carbon monoxide sensor. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Reference Figure 1-Figure 2 A burner self-regulating control system, the burner self-regulating control system comprises a burner 1, a controller 2, a damper servo motor 3, a boiler 4, a chimney 5, a flue gas data collection point 6, a temperature sensor 7, and a carbon monoxide sensor 8;

[0022] The burner 1 is installed at the inlet of the boiler 4;

[0023] The burner 1 is provided with a controller 2 and a damper servo motor 3;

[0024] A chimney 5 is provided at the end of the boiler 4 , and two flue gas data collection points 6 are provided on the chimney 5 . A temperature sensor 7 and a carbon monoxide sensor 8 are provided in the two flue gas data collection points 6 , respectively.

[0025] It should be further explained that the controller 2 is used to control the overall operation of the burner 1 and receive feedback signals to issue commands to the gas actuator.

[0026] It should be further explained that the damper servo motor 3 is used to receive commands from the controller 2 and drive the damper to rotate.

[0027] It should be further explained that the temperature sensor 7 and the carbon monoxide sensor 8 are connected to the controller 2 via cables to transmit signals.

[0028] It should be further explained that the temperature sensor 7 is used to detect the flue gas temperature in the chimney 5 and transmit it to the controller 2 .

[0029] It should be further explained that the carbon monoxide sensor 8 is used to detect the carbon monoxide content of the flue gas in the chimney 5 and transmit it to the controller 2 .

[0030] Working mode: At the beginning of operation, set the flue gas temperature range and the upper limit of carbon monoxide content. During operation, first judge the flue gas temperature. When the flue gas temperature is not within the set range, then judge whether the flue gas temperature is higher than the set temperature range. If the flue gas temperature is higher than the set temperature range, the servo motor controls the air door to open wide and then judge the temperature change trend. If the trend is decreasing, adjust the temperature within the set range and transmit it to the controller for record. If the trend is increasing, the servo motor controls the air door to close until the temperature drops to the set temperature range and then transmit it to the controller for record. If the flue gas temperature is lower than the set temperature range, the servo motor controls the air door to close wide and then judge the temperature change trend. If the trend is increasing, adjust the temperature within the set range and then transmit it to the controller for record. If the trend is decreasing, the servo motor controls the air door to open wide and then transmit it to the controller for record. Then determine whether the carbon monoxide content is lower than the set value. If it is lower than the set value, the program ends; otherwise, the servo motor controls the air door to close, and then determine the trend of the carbon monoxide content change. If the trend is downward, adjust the carbon monoxide content to below the set value and then enter the next step of determination; otherwise, the servo motor controls the air door to open until the carbon monoxide content is lower than the set value and then enter the next step of determination.

[0031] If the flue gas temperature is within the set range when it is initially determined, then determine whether the carbon monoxide content is lower than the set value, if so, then end; if not, the servo motor controls the damper to close, and then determine the trend of the carbon monoxide content change, if the trend is downward, adjust the carbon monoxide content to below the set value before proceeding to the next step of determination, otherwise, the servo motor controls the damper to open until the carbon monoxide content is lower than the set value before proceeding to the next step of determination.

[0032] This reciprocating cycle continues until the flue gas temperature is within the set range and the carbon monoxide content is lower than the set value.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A burner self-regulating control system, characterized in that: The burner self-regulating control system comprises a burner (1), a controller (2), a damper servo motor (3), a boiler (4), a chimney (5), a flue gas data collection point (6), a temperature sensor (7), and a carbon monoxide sensor (8); The burner (1) is installed at the inlet of the boiler (4); The burner (1) is provided with a controller (2) and a damper servo motor (3); A chimney (5) is provided at the end of the boiler (4), and two flue gas data collection points (6) are provided on the chimney (5). A temperature sensor (7) and a carbon monoxide sensor (8) are respectively provided in the two flue gas data collection points (6).

2. A burner self-regulating control system according to claim 1, characterized in that: The controller (2) is used to control the overall operation of the burner (1) and to receive feedback signals to issue commands to the gas actuator.

3. A burner self-regulating control system according to claim 1, characterized in that: The damper servo motor (3) is used to receive commands from the controller (2) and drive the damper to rotate.

4. A burner self-regulating control system according to claim 1, characterized in that: The temperature sensor (7) and the carbon monoxide sensor (8) are connected to the controller (2) via cables to transmit signals.

5. A burner self-regulating control system according to claim 1, characterized in that: The temperature sensor (7) is used to detect the smoke temperature in the chimney (5) and transmit it to the controller (2).

6. A burner self-regulating control system according to claim 1, characterized in that: The carbon monoxide sensor (8) is used to detect the carbon monoxide content in the flue gas in the chimney (5) and transmit it to the controller (2).

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