A boiler combustion flame stabilizing device

Abstract

The utility model provides a boiler combustion flame stabilizing device relates to the field of flame stabilizing equipment for boiler combustion, including air supply mechanism, including the air supply subassembly for providing combustion -supporting air, and the preheating subassembly for air heating, air inlet component, for providing combustion-supporting fuel gas, control component, for the regulation combustion-supporting pressure and temperature, mixing subassembly, for gas air mixing, the air supply subassembly includes the fan, the air pipe for air delivery, the utility model discloses a preheating subassembly is set up to the air that enters the boiler and is preheated, effectively solved the problem that the flame is not stable because of the low temperature of external air, can significantly improve the propagation speed and combustion reaction efficiency of flame, avoid the phenomenon that flame shakes, shifts, ensure the normal operation and heating efficiency of boiler, simultaneously, the air after preheating helps fuel to burn more fully, reduces the generation of incomplete combustion product, saves the energy both, reduces the emission of pollutant.

Description

Technical Field

[0001] This utility model belongs to the field of flame stabilization equipment for boiler combustion, specifically a boiler combustion flame stabilization device. Background Technology

[0002] A boiler combustion flame stabilization device is a device used to maintain the stability of the boiler combustion flame, often referred to as a flame stabilizer or flame stabilizer. Its main function is to provide a stable ignition source during combustion, ensuring that the fuel-air mixture can continue to burn and preventing the flame from going out. Gas burners are key equipment in boiler flame stabilization devices. In the boiler system, they are not only responsible for the combustion process of fuel, but also for forming a stable flame in the boiler combustion zone by precisely controlling the mixing ratio of gas (such as natural gas, liquefied petroleum gas, blast furnace gas, etc.) and air, maintaining continuous flame combustion, and preventing flameout or flameout, thereby ensuring the stability of the boiler combustion flame. However, in practical applications, the external air temperature is lower than the internal combustion temperature of the boiler, and the temperature difference is significant. Especially in winter, the low air temperature when the fan delivers air directly affects the combustion state of the flame. When the temperature of the supplied air is too low, the temperature of the gas mixed with the fuel will drop, which will slow down the flame propagation speed and make the combustion reaction sluggish. This will eventually cause the flame to be unstable, and the flame may flicker or deviate, affecting the normal operation and heating efficiency of the boiler. In addition, the low air temperature will also lead to incomplete combustion of fuel, producing more incomplete combustion products such as carbon monoxide. This not only wastes energy but also increases the emission of pollutants. Utility Model Content

[0003] This invention provides a boiler combustion flame stabilization device to solve the above-mentioned problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A boiler combustion flame stabilization device, comprising, The air supply mechanism includes an air supply assembly for supplying combustion air and a preheating assembly for heating the air; The air intake assembly is used to provide combustion-supporting fuel gas; Control components are used to regulate combustion pressure and temperature; A mixing component for mixing fuel gas and air; The air supply assembly includes a fan, an air duct for air delivery, and a first regulating valve for adjusting the air volume. The preheating assembly includes a heating chamber, a heating rod located inside the heating chamber, and fins located on the surface of the heating rod.

[0005] A further improvement of this utility model is that the heating box is located at the outlet end of the fan and is connected to the outlet of the fan, and one end of the air duct is connected to the top of the heating box.

[0006] A further improvement of this invention is that the heating rod is fixed to the inner cavity of the heating box, and the fins are fixed to the surface of the heating rod.

[0007] A further improvement of this invention is that the heating rod is provided in several groups.

[0008] A further improvement of this utility model is that the air intake assembly includes a pipe frame, a gas pipe fixedly connected to the pipe frame, a second regulating valve for adjusting the air intake volume, an air intake valve connected to one end of the gas pipe, and a pressure gauge fixed to the surface of the pipe frame.

[0009] A further improvement of this utility model is that the control component includes a PLC control cabinet, a temperature sensor for detecting temperature, a first pressure transmitter for detecting wind force, and a second pressure transmitter for detecting gas pressure. The first pressure transmitter is located at the outlet of the fan, and the second pressure transmitter is located on the surface of the gas pipe. The output terminals of the temperature sensor, the first pressure transmitter, and the second pressure transmitter are all electrically connected to the input terminal of the PLC control cabinet. The output terminal of the PLC control cabinet is electrically connected to the input terminals of the fan, the first regulating valve, the heating rod, and the second regulating valve, respectively.

[0010] A further improvement of this utility model is that the mixing component includes a mixing tank, a combustion tube fixed to one end of the mixing tank, and an igniter fixed to the surface of the combustion tube, wherein the igniter penetrates into the inner cavity of the combustion tube, and the air duct and the gas pipe are both connected to the inner cavity of the mixing tank.

[0011] A further improvement of this invention is that the first regulating valve is located at the connection between the air duct and the mixing tank.

[0012] A further improvement of this invention is that the second regulating valve is located at the connection between the mixing tank and the gas pipe.

[0013] A further improvement of this invention is that temperature sensors are installed at the upper and lower ends of the heating box and on the surface of the mixing tank.

[0014] Compared with the prior art, the present invention has at least the following beneficial technical effects: This utility model provides a boiler combustion flame stabilization device that effectively solves the problem of flame instability caused by low external air temperature by setting a preheating component to preheat the air entering the boiler. It can significantly improve the flame propagation speed and combustion reaction efficiency, avoid flame shaking and deviation, and ensure the normal operation and heating efficiency of the boiler. At the same time, the preheated air helps the fuel to burn more completely, reducing the generation of incomplete combustion products, which saves energy and reduces pollutant emissions. In addition, by controlling the combustion pressure and temperature precisely by controlling the component, and by using the mixing component to achieve uniform mixing of fuel gas and air, the stability of the boiler combustion flame is further improved. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the connection structure between the air supply mechanism and the air intake component and the mixing component of this utility model; Figure 3 This is a schematic diagram of the main structure of the air supply mechanism of this utility model; Figure 4 This is a cross-sectional structural diagram of the heating box of this utility model.

[0017] In the picture: 100. Air supply mechanism; 110. Air supply assembly; 111. Fan; 112. Air duct; 113. First regulating valve; 120. Preheating assembly; 121. Heating box; 122. Heating rod; 123. Fin; 200. Air intake assembly; 210. Pipe rack; 220. Gas pipe; 230. Second regulating valve; 240. Air intake valve; 250. Pressure gauge; 300. Control assembly; 310. PLC control cabinet; 320. Temperature sensor; 330. First pressure transmitter; 340. Second pressure transmitter; 400. Mixing assembly; 410. Mixing tank; 420. Combustion tube; 430. Ignition device. Detailed Implementation

[0018] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] It should be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0024] It should also be understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0025] The accompanying drawings show various structural schematic diagrams according to embodiments of the present invention. These drawings are not to scale, and some details have been enlarged and may have been omitted for clarity. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0026] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0027] Example 1 like Figure 1-4 As shown, this is the first embodiment of the present invention. This embodiment provides a boiler combustion flame stabilization device, including an air supply mechanism 100, including an air supply component 110 for providing combustion air, a preheating component 120 for air heating, an air intake component 200 for providing combustion gas, a control component 300 for regulating combustion pressure and temperature, and a mixing component 400 for mixing gas and air. The air supply component 110 includes a fan 111, an air duct 112 for air delivery, and a first regulating valve 113 for regulating air volume. The preheating component 120 includes a heating box 121, a heating rod 122 located in the inner cavity of the heating box 121, and fins 123 located on the surface of the heating rod 122.

[0028] like Figure 1-4As shown, the air supply mechanism 100 includes a fan 111, an air duct 112, and a first regulating valve 113, used to provide and regulate the flow rate of combustion air to ensure that the amount of air entering the boiler combustion chamber is controllable and suitable for different load conditions. The preheating assembly 120 includes a heating box 121, a heating rod 122, and fins 123, used to preheat the supplied air. The heating box 121 is located at the outlet of the fan 111 to ensure that the air is heated before entering the mixing chamber. The top and bottom of the heating box 121 are both conical, which helps to form a more uniform airflow within the heating box 121. The heating chamber 121 is designed to ensure that every part of the air is fully preheated. The surface of the heating chamber 121 can also be wrapped with an insulation layer to reduce heat loss and improve preheating efficiency. In addition, the inlet and outlet of the heating chamber 121 are equipped with sealing devices to prevent air leakage and ensure heating stability and safety. The fins 123 enhance heat exchange efficiency and improve air heating effect. The multiple heating rods 122 improve heating capacity and redundancy, thereby effectively increasing the air temperature and avoiding the problem of low temperature mixed gas temperature caused by low temperature. This effectively solves the problem of flame instability caused by low temperature air supply.

[0029] Example 2 Reference Figure 1-4 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0030] In this embodiment, the heating box 121 is located at the outlet end of the fan 111 and is connected to the outlet of the fan 111, and one end of the air duct 112 is connected to the top of the heating box 121.

[0031] The heating rod 122 is fixed to the inner cavity of the heating box 121, and the fins 123 are fixed to the surface of the heating rod 122. The heating rod 122 is provided with several sets.

[0032] The intake assembly 200 includes a pipe frame 210, a gas pipe 220 fixedly connected to the pipe frame 210, a second regulating valve 230 for adjusting the intake volume, an intake valve 240 connected to one end of the gas pipe 220, and a pressure gauge 250 fixed to the surface of the pipe frame 210.

[0033] The control assembly 300 includes a PLC control cabinet 310, a temperature sensor 320 for detecting temperature, a first pressure transmitter 330 for detecting wind force, and a second pressure transmitter 340 for detecting gas pressure. The first pressure transmitter 330 is located at the outlet of the fan 111, and the second pressure transmitter 340 is located on the surface of the gas pipe 220. The output terminals of the temperature sensor 320, the first pressure transmitter 330, and the second pressure transmitter 340 are all electrically connected to the input terminal of the PLC control cabinet 310. The output terminal of the PLC control cabinet 310 is electrically connected to the input terminals of the fan 111, the first regulating valve 113, the heating rod 122, and the second regulating valve 230, respectively.

[0034] The mixing assembly 400 includes a mixing tank 410, a combustion tube 420 fixed to one end of the mixing tank 410, and an igniter 430 fixed to the surface of the combustion tube 420. The igniter 430 extends into the inner cavity of the combustion tube 420. The air duct 112 and the gas pipe 220 are both connected to the inner cavity of the mixing tank 410.

[0035] The first regulating valve 113 is located at the connection between the air duct 112 and the mixing tank 410, and the second regulating valve 230 is located at the connection between the mixing tank 410 and the gas pipe 220. Temperature sensors 320 are installed at the upper and lower ends of the heating box 121 and on the surface of the mixing tank 410.

[0036] like Figure 1-4 As shown, the intake assembly 200 includes a gas pipe 220, a second regulating valve 230, an intake valve 240, and a pressure gauge 250, used to control the gas flow and pressure, ensuring the stability and safety of gas delivery. The second regulating valve 230 precisely controls the gas quantity, and in conjunction with preheated air, dynamically adjusts the air-fuel ratio, thereby improving combustion quality. The control assembly 300 includes a PLC control cabinet 310, a temperature sensor 320, a first pressure transmitter 330, and a second pressure transmitter 340, realizing closed-loop control of the combustion system. The temperature sensor 320 monitors the temperature of air, mixed gas, and gas in real time. The first pressure transmitter 330 and the second pressure transmitter 240... The transmitter 340 provides feedback on air pressure and gas pressure. The PLC control cabinet 310 integrates a PLC controller, voltage regulator, frequency converter, and other components. Based on the feedback data, it automatically adjusts the speed of the fan 111, the opening of the first regulating valve 113 and the second regulating valve 230, and the power of the heating rod 122. Through intelligent control, it dynamically adjusts the air preheating intensity and the gas supply ratio to maintain flame stability. The mixing assembly 400 includes a mixing tank 410, a combustion tube 420, and an igniter 430. The mixing tank 410 is equipped with a baffle plate and a vortex generator to ensure sufficient contact between the gas and air. The igniter 430 is located inside the combustion tube 420 to achieve rapid ignition. The heating rod 122 and fins 123 effectively increase the air temperature and reduce the temperature difference with the combustion temperature, thereby increasing the temperature of the mixed gas and accelerating the flame propagation speed. The PLC controller dynamically adjusts the fan 111, the two regulating valves, and the heating rod 122 based on feedback from temperature and pressure sensors to ensure that the flame remains stable under different ambient temperatures. The two regulating valves achieve a dynamic ratio of gas and air to avoid incomplete combustion. Inside the mixing tank 410, the guide plates are arranged at a specific angle to form a spiral mixing flow between the incoming gas and preheated air. The vortex generator adopts a multi-stage blade structure to further enhance the mixing effect, ensuring that the gas and air reach a uniform mixing state before entering the combustion tube 420. This not only improves the combustion efficiency but also reduces local high or low temperature areas caused by uneven mixing, thereby avoiding flame flickering or deviation. The igniter 430 adopts a high-voltage electric arc ignition method, which can ignite the mixed gas in a very short time, ensuring rapid ignition and stable combustion when the boiler starts up.

[0037] In operation, the blower 111 is first started to introduce outside air into the air supply mechanism 100. After being accelerated by the blower 111, the air enters the heating box 121. The heating rods 122 and fins 123 in the heating box 121 preheat the air. The preheated air is then transported to the mixing tank 410 through the air duct 112. At the same time, the gas pipe 220 in the air intake assembly 200, under the control of the second regulating valve 230, delivers an appropriate amount of gas to the mixing tank 410. In the mixing tank 410, the preheated air and gas are fully mixed under the action of the guide plate and the vortex generator to form a uniform gas mixture. After the gas mixture enters the combustion pipe 420, the igniter 430 quickly ignites the gas mixture, forming a stable gas mixture. The combustion flame is controlled by temperature sensor 320, first pressure transmitter 330, and second pressure transmitter 340 in component 300, which monitor air temperature, wind pressure, and gas pressure in real time and feed the data back to PLC control cabinet 310. Based on the feedback data, PLC control cabinet 310 automatically adjusts the speed of fan 111, the opening of first regulating valve 113 and second regulating valve 230, and the power of heating rod 122 to ensure stable combustion of the flame under different operating conditions. Through the above structure and working principle, the air entering the boiler is preheated, the combustion pressure and temperature are precisely controlled, and the gas and air are mixed evenly, thereby significantly improving the stability of the boiler combustion flame.

[0038] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail in this application.

[0039] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.

Claims

1. A boiler combustion flame stabilization device, characterized in that, include, The air supply mechanism (100) includes an air supply assembly (110) for supplying combustion air and a preheating assembly (120) for heating the air. Intake assembly (200) for providing combustion-supporting fuel gas; Control components (300) are used to regulate combustion pressure and temperature; Mixing assembly (400) for gas-air mixing; The air supply assembly (110) includes a fan (111), an air duct (112) for air delivery, and a first regulating valve (113) for regulating the air volume. The preheating assembly (120) includes a heating box (121), a heating rod (122) located inside the heating box (121), and fins (123) located on the surface of the heating rod (122).

2. The boiler combustion flame stabilizing device according to claim 1, characterized in that, The heating box (121) is located at the outlet end of the fan (111) and is connected to the outlet of the fan (111). One end of the air duct (112) is connected to the top of the heating box (121).

3. The boiler combustion flame stabilizing device according to claim 1, characterized in that, The heating rod (122) is fixed to the inner cavity of the heating box (121), and the fins (123) are fixed to the surface of the heating rod (122).

4. The boiler combustion flame stabilizing device according to claim 3, characterized in that, The heating rod (122) is provided in several groups.

5. The boiler combustion flame stabilizing device according to claim 1, characterized in that, The air intake assembly (200) includes a pipe frame (210), a gas pipe (220) fixedly connected to the pipe frame (210), a second regulating valve (230) for adjusting the air intake volume, an air intake valve (240) connected to one end of the gas pipe (220), and a pressure gauge (250) fixed to the surface of the pipe frame (210).

6. The boiler combustion flame stabilizing device according to claim 5, characterized in that, The control component (300) includes a PLC control cabinet (310), a temperature sensor (320) for detecting temperature, a first pressure transmitter (330) for detecting wind force, and a second pressure transmitter (340) for detecting gas pressure. The first pressure transmitter (330) is located at the outlet of the fan (111), and the second pressure transmitter (340) is located on the surface of the gas pipe (220). The output terminals of the temperature sensor (320), the first pressure transmitter (330), and the second pressure transmitter (340) are all electrically connected to the input terminal of the PLC control cabinet (310). The output terminal of the PLC control cabinet (310) is electrically connected to the input terminals of the fan (111), the first regulating valve (113), the heating rod (122), and the second regulating valve (230), respectively.

7. The boiler combustion flame stabilizing device according to claim 6, characterized in that, The mixing assembly (400) includes a mixing tank (410), a combustion tube (420) fixed to one end of the mixing tank (410), and an igniter (430) fixed to the surface of the combustion tube (420). The igniter (430) extends into the inner cavity of the combustion tube (420), and the air duct (112) and the gas pipe (220) are both connected to the inner cavity of the mixing tank (410).

8. The boiler combustion flame stabilizing device according to claim 7, characterized in that, The first regulating valve (113) is located at the connection between the air duct (112) and the mixing tank (410).

9. The boiler combustion flame stabilizing device according to claim 7, characterized in that, The second regulating valve (230) is located at the connection between the mixing tank (410) and the gas pipe (220).

10. The boiler combustion flame stabilizing device according to claim 7, characterized in that, Temperature sensors (320) are installed on the upper and lower ends of the heating box (121) and on the surface of the mixing tank (410).

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