An air-injection adaptive air distribution kiln combustion system

Abstract

The utility model relates to an air-powered ejection adaptive air distribution kiln combustion system, comprising an air supply component, a methanol burner, a feed balancer and a controller. The methanol burner comprises a gas phase pipeline, a liquid phase pipeline, a combustion nozzle, a secondary air inlet and a guide tube, the gas phase pipeline is connected to the air supply component through a pipeline, the gas phase pipeline and the liquid phase pipeline are both connected to the combustion nozzle, the guide tube is connected to the combustion nozzle, a mixing chamber is provided in the combustion nozzle, and an ignition needle and an ion probe are provided on the combustion nozzle. By arranging a double-path ejection flow channel and a mixing chamber in the combustion nozzle, the gas phase and the liquid phase are fed separately and then mixed, so that the methanol fuel can be fully mixed with the air, and the combustion efficiency is improved. The controller can realize the precise control of the ratio of methanol fuel to air, and automatically adjust the fuel supply according to the actual needs of the kiln and the combustion situation, to ensure stable and efficient combustion.

Description

Technical Field

[0001] The utility model relates to the technical field of kiln equipment, in particular to an air dynamic injection adaptive air distribution kiln combustion system. Background Art

[0002] With the development of industry, kilns, as important heat energy conversion equipment, are widely used in ceramics, metallurgy, chemical industry and other industries. Existing kiln burners mostly use natural gas or liquefied petroleum gas combustion systems for heating, but natural gas or liquefied petroleum gas will produce a lot of black smoke when burning, and the flame combustion intensity is not enough, the combustion is unstable, and it is easy to cause the problem of flameout.

[0003] Based on this, the utility model provides an aerodynamically induced adaptive air distribution kiln combustion system. Utility Model Content

[0004] The purpose of the utility model is to provide an air-powered injection adaptive air distribution kiln combustion system to solve the technical problems in the prior art proposed in the above-mentioned background technology that a large amount of black smoke will be generated when natural gas or liquefied petroleum gas is burned, and the flame combustion intensity is insufficient, the combustion is unstable, and it is easy to cause the flameout.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An air-powered injection adaptive air distribution kiln combustion system comprises an air supply component, a methanol burner, a feed balancer and a controller; the air supply component is used to supply compressed air to the methanol burner at a set flow rate; the methanol burner comprises a gas phase pipeline, a liquid phase pipeline, a combustion nozzle, a secondary air inlet and a guide tube, the gas phase pipeline is connected to the air supply component through a pipeline, the gas phase pipeline and the liquid phase pipeline are both connected to one end of the combustion nozzle, the guide tube is connected to the other end of the combustion nozzle, a mixing chamber is provided in the combustion nozzle, and an ignition needle and an ion probe are provided on the combustion nozzle; the feed balancer is connected to the liquid phase pipeline through a fuel pipe; the controller is used to control ignition and fire detection as well as the supply ratio of methanol fuel and air.

[0007] As a preferred embodiment, the air supply assembly includes a ball valve, a proportional valve, an air circuit pressure regulating valve and a solenoid valve, wherein the ball valve, the proportional valve, the air circuit pressure regulating valve and the solenoid valve are connected in sequence through a pipeline, and the solenoid valve is located at one end of the pipeline connected to the gas phase pipeline.

[0008] As a preferred solution, a fuel level control device is provided in the feed balancer, an exhaust valve is provided at the top of the feed balancer, a fuel outlet is provided at the bottom of the feed balancer, and the fuel outlet is connected to the fuel pipe.

[0009] As a preferred solution, it further comprises a temperature sensor, which is electrically connected to the controller and is used to monitor the flame temperature.

[0010] As a preferred solution, the controller includes a user interface for receiving setting parameters input by a user.

[0011] As a preferred solution, a flame stabilizing disk is provided on the outside of the combustion nozzle, and the ion probe and the ignition needle are mounted on the flame stabilizing disk.

[0012] It can be seen from the technical solution provided by the utility model that the aerodynamic injection adaptive air distribution kiln combustion system provided by the utility model has the following beneficial effects compared with the prior art:

[0013] The utility model arranges a double-path injection flow channel and a mixing chamber in the combustion nozzle, so that the gas phase pipeline and the liquid phase pipeline can be respectively connected to the combustion nozzle for separate feeding, and then mixed through the mixing chamber, so that the methanol fuel can be fully mixed with the air, thereby improving the combustion efficiency, and the controller can realize the precise control of the ratio of methanol fuel to air, and the fuel supply can be automatically adjusted according to the actual demand of the kiln and the combustion situation, thereby ensuring stable and efficient combustion. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional schematic diagram of the overall structure of the air-powered injection adaptive air distribution kiln combustion system provided by the embodiment of the utility model;

[0015] Figure 2 The utility model is provided in an embodiment of the present invention and is a schematic diagram of the overall structural cross-section of the aerodynamically induced adaptive air distribution kiln combustion system.

[0016] In the figure: 1. Air supply assembly; 11. Ball valve; 12. Proportional valve; 13. Gas circuit pressure regulating valve; 14. Solenoid valve; 2. Methanol burner; 21. Gas phase pipeline; 22. Liquid phase pipeline; 23. Combustion nozzle; 24. Secondary air inlet; 25. Flow guide tube; 26. Ignition needle; 27. Ion probe; 28. Flame stabilizing disk; 3. Feed balancer; 31. Fuel pipe; 32. Exhaust valve; 33. Fuel outlet; 4. Controller. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0018] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0019] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0021] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] See also Figure 1 to Figure 2 The embodiment of the present application provides an air-powered injection adaptive air distribution kiln combustion system, comprising an air supply component 1, a methanol burner 2, a feed balancer 3 and a controller 4. The air supply component 1 is used to supply compressed air to the methanol burner 2 at a set flow rate; the methanol burner 2 comprises a gas phase pipeline 21, a liquid phase pipeline 22, a combustion nozzle 23, a secondary air inlet 24 and a guide tube 25, the gas phase pipeline 21 is connected to the air supply component 1 through a pipeline, the gas phase pipeline 21 and the liquid phase pipeline 22 are both connected to one end of the combustion nozzle 23, the guide tube 25 is connected to the other end of the combustion nozzle 23, a mixing chamber is provided in the combustion nozzle 23, and an ignition needle 26 and an ion probe 27 are provided on the combustion nozzle 23; the feed balancer 3 is connected to the liquid phase pipeline 22 through a fuel pipe 31; the controller 4 is used to control ignition detection and the supply ratio of methanol fuel and air.

[0023] Working principle and effect: The high-pressure air regulated by the air supply component 1 flows through the gas phase pipe 21 to the mixing chamber of the combustion nozzle 23. At this time, suction is generated at the pipe mouth of the liquid phase pipe 22, so that the methanol fuel in the feed balancer 3 is sucked into the mixing chamber of the combustion nozzle 23 by negative pressure through the fuel pipe 31. The two-phase medium is mixed and atomized and then ejected from the combustion nozzle 23. Then the controller 4 sends a detection instruction to the ion probe 27. After detecting the medium, the ion probe 27 generates a high-voltage arc ignition together with the ignition needle 26, and then inhales the preheated fresh air through the secondary air inlet 24. The combustion flames are mixed and burned in the guide tube 25 and generate high-temperature flames that are ejected from the guide tube 25.

[0024] Compared with the prior art, the utility model sets a dual-path injection channel and a mixing chamber in the combustion nozzle 23, so that the gas phase pipeline 21 and the liquid phase pipeline 22 can be connected to the combustion nozzle 23 respectively for separate feeding, and then mixed through the mixing chamber, so that the methanol fuel can be fully mixed with the air, thereby improving the combustion efficiency, and the controller 4 can realize the precise control of the ratio of methanol fuel to air, and can automatically adjust the fuel supply according to the actual needs of the kiln and the combustion conditions, thereby ensuring stable and efficient combustion.

[0025] In one embodiment, Figure 2 As shown, the air supply assembly 1 includes a ball valve 11, a proportional valve 12, a gas circuit pressure regulating valve 13 and a solenoid valve 14, which are sequentially connected through a pipeline, and the solenoid valve 14 is located at one end of the pipeline connected to the gas phase pipeline 21. It is used to supply compressed air to the combustion nozzle 23 at a set flow rate to achieve premixing of methanol fuel and air.

[0026] In one embodiment, Figure 2 As shown, a fuel level control device is provided in the feed balancer 3, an exhaust valve 32 is provided at the top of the feed balancer 3, a fuel outlet 33 is provided at the bottom of the feed balancer 3, and the fuel outlet 33 is connected to the fuel pipe 31. It is used to supply methanol fuel to the combustion nozzle 23 at a set liquid level difference to achieve premixing of methanol fuel and air.

[0027] In one embodiment, a temperature sensor is further included, which is electrically connected to the controller 4 and is used to monitor the flame temperature. The controller 4 is used to start ignition and monitor the combustion state in real time. If the combustion state is abnormal, the controller 4 controls the solenoid valve 14 to automatically lock, and can output an analog signal in real time according to the result of the temperature sensor monitoring to automatically adjust the proportional valve 12, so as to realize the supply ratio of air and methanol fuel to control the power output of the burner.

[0028] In one embodiment, the controller 4 includes a user interface for receiving setting parameters input by a user, such as inputting parameters such as target temperature and target pressure, and the power of the burner can be automatically adjusted accordingly.

[0029] In one embodiment, Figure 2 As shown, the combustion nozzle 23 is provided with a flame stabilizing disk 28 on the outside, and the ion probe 27 and the ignition needle 26 are installed on the flame stabilizing disk 28. The main function of the flame stabilizing disk 28 is to organize the airflow so that the flame can burn stably. The flame stabilizing disk 28 achieves its function through specific structures, such as cyclone blades, cyclone disks, etc. These structures can generate a swirling airflow, which is conducive to the full mixing of air and fuel, and also has the function of adjusting the secondary air volume.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An air-injection adaptive air distribution kiln combustion system, characterized in that: It comprises an air supply component (1), a methanol burner (2), a feed balancer (3) and a controller (4); The air supply assembly (1) is used to supply compressed air to the methanol burner (2) at a set flow rate; The methanol burner (2) comprises a gas phase pipeline (21), a liquid phase pipeline (22), a combustion nozzle (23), a secondary air inlet (24) and a flow guide pipe (25); the gas phase pipeline (21) is connected to the air supply assembly (1) through a pipeline; the gas phase pipeline (21) and the liquid phase pipeline (22) are both connected to one end of the combustion nozzle (23); the flow guide pipe (25) is connected to the other end of the combustion nozzle (23); a mixing chamber is provided in the combustion nozzle (23); and an ignition needle (26) and an ion probe (27) are provided on the combustion nozzle (23); The feed balancer (3) is connected to the liquid phase pipeline (22) through a fuel pipe (31); The controller (4) is used to control ignition and fire detection as well as the supply ratio of methanol fuel and air.

2. The aerodynamic injection adaptive air distribution kiln combustion system according to claim 1 is characterized by: The air supply assembly (1) comprises a ball valve (11), a proportional valve (12), a gas circuit pressure regulating valve (13) and a solenoid valve (14); the ball valve (11), the proportional valve (12), the gas circuit pressure regulating valve (13) and the solenoid valve (14) are connected in sequence via a pipeline, and the solenoid valve (14) is located at one end of the pipeline connected to the gas phase pipeline (21).

3. The air dynamic injection adaptive air distribution kiln combustion system according to claim 1 is characterized by: A fuel liquid level control device is provided in the feed balancer (3), an exhaust valve (32) is provided at the top of the feed balancer (3), and a fuel outlet (33) is provided at the bottom of the feed balancer (3), and the fuel outlet (33) is communicated with the fuel pipe (31).

4. The air dynamic injection adaptive air distribution kiln combustion system according to claim 1 is characterized by: It also includes a temperature sensor, which is electrically connected to the controller (4) and is used to monitor the flame temperature.

5. The aerodynamic injection adaptive air distribution kiln combustion system according to claim 1 is characterized by: The controller (4) comprises a user interface for receiving setting parameters input by a user.

6. The air dynamic injection adaptive air distribution kiln combustion system according to claim 1 is characterized by: The combustion nozzle (23) is externally sleeved with a flame stabilizing disk (28), and the ion probe (27) and the ignition needle (26) are mounted on the flame stabilizing disk (28).

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