Full premixed intelligent long-lasting lamp suitable for pure oxygen combustor

Abstract

The application discloses a full-premixing intelligent long-lasting lamp suitable for a pure oxygen burner, which comprises a mixer, a mixing pipeline and a combustion nozzle which are sequentially connected, the mixer is connected with a gas inlet pipe and an oxygen inlet pipe respectively, the mixer is provided with an ignition rod which penetrates through the mixer, the mixing pipeline and the combustion nozzle, the mixer is of a Venturi structure, the oxygen inlet pipe is connected to a side wall of the mixer far from the mixing pipeline, the gas inlet pipe is connected to a position with the smallest diameter in the middle of the mixer, and the mixer is provided with an ultraviolet flame detector. The full-premixing combustion is adopted, oxygen and gas are simultaneously introduced into a combustion zone, the flame speed propagation is faster, and almost no nitrogen oxide and carbon monoxide are generated.

Description

TECHNICAL FIELD

[0001] The present application relates to a long-lasting lamp, in particular to a full premixing type intelligent long-lasting lamp suitable for pure oxygen burners. BACKGROUND

[0002] The burner has developed from air combustion to oxygen-rich combustion to pure oxygen combustion with oxygen concentration greater than 90%. Air contains 79% nitrogen and only 21% oxygen. Nitrogen takes away a large amount of heat in the combustion reaction, while pure oxygen combustion has less nitrogen, and the flue gas takes away less heat. Premixing combustion controls the mixing ratio through an adjustable intelligent air bypass to make the combustion temperature lower than the initial temperature of thermal nitrogen oxide formation, thereby reducing the formation of nitrogen oxides. The flame temperature of the pure oxygen burner is high, and the traditional long-lasting lamp is not suitable. Gas and oxygen cannot enter the furnace at the same time, which poses a safety risk. From the urgent need for energy saving and environmental protection, the pure oxygen burner has developed rapidly, and a full premixing type intelligent long-lasting lamp suitable for pure oxygen burners is needed. SUMMARY

[0003] To solve the above problems, the following technical solutions are proposed:

[0004] A full premixing type intelligent long-lasting lamp suitable for pure oxygen burners, comprising a mixer, a mixing pipeline and a combustion nozzle connected in sequence, the mixer is connected with a gas inlet pipe and an oxygen inlet pipe, further comprising an ignition rod penetrating the mixer, the mixing pipeline and the combustion nozzle, the mixer is a Venturi structure, the oxygen inlet pipe is connected to the side wall of the mixer away from the mixing pipeline, the gas inlet pipe is connected to the smallest diameter part of the mixer, and the mixer is provided with an ultraviolet flame detector.

[0005] Further, a conical protective cover is arranged above one end of the combustion nozzle, a plurality of connecting rods are fixedly connected to the bottom of the conical protective cover in a uniform and equidistant manner in the circumferential direction, the connecting rods are installed on the mounting bearing at the bottom, the connecting rods are arranged in the axial direction of the mounting bearing, the inner ring of the mounting bearing is fixedly connected to the outer wall of the mixing pipeline, and the mounting bearing can rotate on the mixing pipeline.

[0006] Further, a driving fan is arranged in the mixing pipeline, the driving fan is drivingly connected with a bevel gear A through a fan rotating shaft, the bevel gear A is engaged with a bevel gear C, the bevel gear C is drivingly connected with a bevel gear B through a transmission rotating shaft, the transmission rotating shaft penetrates the mixing pipeline, and the bevel gear B drives the mounting bearing to rotate.

[0007] Further, the transmission rotating shaft is rotatably connected to the mixing pipeline through a sealing bearing, and the connection between the transmission rotating shaft and the mixing pipeline is sealed by the sealing bearing.

[0008] Furthermore, an annular mounting base is fixedly connected to the outer ring of the mounting bearing, the mounting bearing is embedded in the middle of the mounting base, the connecting rod is fixedly connected to the mounting base, and a bevel gear ring is provided on the side of the mounting base away from the connecting rod, which meshes with bevel gear B.

[0009] Furthermore, the fan shaft passes through the fan bearing and is rotatably connected to the fan bearing, and the fan bearing is fixedly connected to the inner wall of the mixing pipe by fan mounting brackets that are evenly arranged in the circumferential direction.

[0010] Furthermore, a backfire prevention plate is installed inside the burner, and flame acceleration holes are evenly distributed on the backfire prevention plate, through which the ignition rod passes.

[0011] Furthermore, this includes emergency shut-off valves, pressure regulating valves, pressure transmitters, micro-control valves, oxygen regulating valves, combustion controllers, and gas flow meters.

[0012] An emergency shut-off valve, a pressure regulating valve, a micro-regulating valve, a pressure transmitter, and a gas flow meter are sequentially installed on the gas inlet pipe.

[0013] An emergency shut-off valve, an oxygen regulating valve, a pressure transmitter, and a gas flow meter are sequentially installed on the oxygen inlet pipe.

[0014] The pressure regulating valve is electrically connected to the combustion controller and the ultraviolet flame detector.

[0015] The beneficial effects of this invention are as follows:

[0016] This invention is applied to pure oxygen burners, where the furnace temperature is higher than that of air-assisted burners, reaching 2500℃. The burner nozzle material is silicon carbide or other high-temperature resistant materials, capable of withstanding temperatures up to 2900℃, and possesses high rigidity, making it resistant to deformation.

[0017] It adopts fully premixed combustion, which ensures that oxygen and fuel gas enter the combustion zone simultaneously, resulting in faster flame propagation and almost no production of nitrogen oxides and carbon monoxide.

[0018] A backfire prevention plate is welded to one end near the burner nozzle. It has a venturi structure to prevent backfire and can accelerate the flame speed.

[0019] It features an intelligent control valve system that achieves the optimal air-fuel ratio through precise electronic air-fuel ratio adjustment, saving fuel and ensuring safety.

[0020] During daily use of the automatic light, since it is exposed to the external environment, the conical protective cover can block rainwater from entering the light during rainy weather, thus preventing the light from going out. At the same time, the rotating conical protective cover can shake the rainwater away from it, preventing it from falling into the light through the edge of the cover.

[0021] This continuous lamp has a simple structure and is easy to install. It uses a fully premixed combustion method, which controls the air-fuel ratio through valves to achieve zero nitrogen oxide generation. It is energy-saving, environmentally friendly, and resistant to high temperatures, making it suitable for pure oxygen burners. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the pipeline of the present invention;

[0024] Figure 3 This is a schematic diagram of the burner structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0026] Figure 5 for Figure 4 Enlarged view of a portion of the image.

[0027] The reference numerals in the attached diagrams are explained as follows: 1. Mixer; 2. Mixing pipe; 3. Burner nozzle; 4. Gas inlet pipe; 5. Oxygen inlet pipe; 6. Ultraviolet flame detector; 7. Ignition rod; 8. Anti-backfire plate; 9. Emergency shut-off valve; 10. Pressure regulating valve; 11. Pressure transmitter; 12. Micro-regulating valve; 13. Oxygen regulating valve; 14. Combustion controller; 15. Gas flow meter; 161. Mounting bearing; 162. Mounting base; 163. Bevel gear ring; 17. Drive fan; 171. Bevel gear A; 172. Fan bearing; 173. Fan shaft; 174. Fan mounting bracket; 181. Transmission shaft; 182. Bevel gear B; 183. Bevel gear C; 19. Conical protective cover; 191. Connecting rod. Detailed Implementation

[0028] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] The present invention will be further described below with reference to the accompanying drawings:

[0031] Example 1

[0032] In this embodiment, as Figure 1 , 2 As shown in Figure 3, a fully premixed intelligent continuous lamp suitable for pure oxygen burners includes a mixer 1, a mixing pipe 2, and a burner 3 connected in sequence. The mixer 1 is connected to a gas inlet pipe 4 and an oxygen inlet pipe 5. It also includes an ignition rod 7 that runs through the mixer 1, the mixing pipe 2, and the burner 3. The mixer 1 has a Venturi structure. The oxygen inlet pipe 5 is connected to the side wall of the mixer 1 away from the mixing pipe 2, and the gas inlet pipe 4 is connected to the smallest diameter point in the middle of the mixer 1. An ultraviolet flame detector 6 is installed on the mixer 1. The mixer 1 has a Venturi structure with large ends and a small middle section, which accelerates gas flow. One end of the mixer 1 is open and connected to the mixing pipe 2, while the other end is sealed with two round holes for the ultraviolet flame detector 6 and the ignition rod 7. The photosensitive tube of the ultraviolet flame detector 6 is connected to an extended tube at the bottom of the mixer 1 via a threaded connection to detect the flame.

[0033] The burner is equipped with a backfire prevention plate 8, on which flame acceleration holes are evenly distributed. The ignition rod 7 passes through these flame acceleration holes. The evenly distributed flame acceleration holes on the backfire prevention plate 8 increase the flame combustion speed.

[0034] The system includes an emergency shut-off valve 9, a pressure regulating valve 10, a pressure transmitter 11, a micro-regulating valve 12, an oxygen regulating valve 13, a combustion controller 14, and a gas flow meter 15. The emergency shut-off valve 9, pressure regulating valve 10, micro-regulating valve 12, pressure transmitter 11, and gas flow meter 15 are sequentially installed on the gas inlet pipe 4; the emergency shut-off valve 9, oxygen regulating valve 13, pressure transmitter 11, and gas flow meter 15 are sequentially installed on the oxygen inlet pipe 5; and the pressure regulating valve 10 is electrically connected to the combustion controller 14 and the ultraviolet flame detector 6. The emergency shut-off valve 9 can manually cut off the gas supply in an emergency, thus disconnecting the fuel supply in the event of a power outage or other sudden event; the pressure regulating valve 10 can adjust the gas flow rate to ensure that oxygen and gas are fully mixed in the mixer 1, and it has its own filter; the pressure transmitter 11 can be used to detect pressure and display pipeline pressure; the micro-adjustment valve 12 can adjust a small amount of flow rate, making the control more precise; the oxygen regulating valve 13 can be used to control the oxygen intake; the combustion controller 14 can control the pressure regulating valve 10, receive ultraviolet flame detection signals, and send automatic ignition signals; the gas flow meter 15 can be used to detect gas flow rate.

[0035] During use, the air-fuel ratio is adjusted before gas intake according to the amount of pure oxygen required for combustion. Gas enters the gas intake pipe 4 from the gas inlet, passing through the emergency shut-off valve 9, pressure regulating valve 10, micro-regulating valve 12, pressure transmitter 11, and gas flow meter 15. Pure oxygen enters the pipeline from the oxygen inlet, passing through the emergency shut-off valve 9, oxygen regulating valve 13, pressure transmitter 11, and gas flow meter 15. Then, gas and pure oxygen enter the mixer 1 from the gas intake pipe 4 and oxygen intake pipe 5 respectively. After the gas and oxygen are fully mixed in a precise ratio, they pass through the mixing pipe 2 and the anti-backfire plate 8 to the burner 3. After automatic ignition by the ignition rod 7, the gas and oxygen are fully combusted without the generation of nitrogen oxides. The ultraviolet flame detector 6 at the end of the continuous lamp detects the flame combustion status through a photosensitive tube. If the flame is extinguished, it can immediately react to the combustion controller 14 to close the gas valve.

[0036] During operation, the air-fuel ratio is calculated based on the amount of pure oxygen required for combustion before gas intake; the emergency shut-off valve 9 is normally open; the gas passes through the pressure regulating valve 10, which controls the gas pressure to match the oxygen pressure, and then through the micro-regulating valve 12, which controls the gas flow rate to the pre-calculated intake volume; then it passes through the pressure transmitter 11 and the gas flow meter 15, and the measured flow rate meets the expected standard; the pure oxygen passes through the oxygen regulating valve 13, which controls the oxygen flow rate to the pre-calculated intake volume, and then passes through the pressure transmitter 11 and the gas flow meter 15, and the measured flow rate meets the expected standard; finally, the gas and pure oxygen enter the mixer 1 to mix at a precise air-fuel ratio.

[0037] Example 2

[0038] In this embodiment, asFigure 4 , 5 As shown, a conical protective cover 19 is provided above one end of the burner nozzle 3. Connecting rods 191 are fixedly connected to the bottom of the conical protective cover 19 at uniform intervals along its circumference. The bottom of the connecting rods 191 is mounted on a mounting bearing 161, which is positioned axially. The inner ring of the mounting bearing 161 is fixedly connected to the outer wall of the mixing pipe 2, allowing the mounting bearing 161 to rotate on the mixing pipe. A drive fan 17 is installed inside the mixing pipe 2. The drive fan 17 is driven by a bevel gear A171 via a fan shaft 173. Bevel gear A171 meshes with a bevel gear C183. Bevel gear C183 is driven by a bevel gear B182 via a drive shaft 181. The drive shaft 181 passes through the mixing pipe 2, and bevel gear B182 drives the mounting bearing 161 to rotate. The drive shaft 181 is rotatably connected to the mixing pipe 2 via a sealed bearing, and the connection between the drive shaft 181 and the mixing pipe 2 is sealed by the sealed bearing. A ring-shaped mounting base 162 is fixedly connected to the outer ring of the mounting bearing 161. The mounting bearing 161 is embedded in the middle of the mounting base 162. A connecting rod 191 is fixedly connected to the mounting base 162. A bevel gear ring 163 is provided on the side of the mounting base 162 away from the connecting rod 191, and the bevel gear ring 163 meshes with a bevel gear B182. A fan shaft 173 passes through the fan bearing 172 and is rotatably connected to the fan bearing 172. The fan bearing 172 is fixedly connected to the inner wall of the mixing pipe 2 by fan mounting brackets 174 evenly arranged in the circumferential direction.

[0039] During use, the gas and oxygen enter the mixing pipe 2 after passing through the mixer 1. The gas mixture in the Venturi mixer 1 has a relatively high speed, giving it the kinetic energy to drive the drive fan 17 as it passes through the mixing pipe 2. The rotation of the drive fan 17 drives the mounting base 162, which is mounted on the mounting bearing 161, through bevel gears A171, C183, and B182. The rotation of the mounting base 162 synchronously drives the rotation of the conical protective cover 19. During daily use of the night light, since the night light is exposed to the external environment, the conical protective cover 19 can block rainwater from entering the night light, thus preventing it from going out. At the same time, the rotating conical protective cover 19 can also throw rainwater away from the cover, preventing it from falling into the night light through its edges.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A fully premixed intelligent continuous lamp suitable for pure oxygen burners, comprising a mixer (1), a mixing pipe (2), and a burner (3) connected in sequence, wherein the mixer (1) is connected to a gas inlet pipe (4) and an oxygen inlet pipe (5), and further comprising an ignition rod (7) penetrating the mixer (1), the mixing pipe (2), and the burner (3), characterized in that: The mixer (1) is of Venturi structure, the oxygen inlet pipe (5) is connected to the side wall of the mixer (1) away from the mixing pipe (2) one end, the gas inlet pipe (4) is connected to the minimum diameter in the middle of the mixer (1), the mixer (1) is provided with ultraviolet flame detector (6); The upper part of one end of the combustion nozzle (3) is provided with a conical protective cover (19), the bottom of the conical protective cover (19) is fixedly connected with connecting rods (191) which are uniformly and equidistantly arranged, the bottom of the connecting rod (191) is installed on the mounting bearing (161), the connecting rod (191) is arranged in the axial direction of the mounting bearing (161), the inner ring of the mounting bearing (161) is fixedly connected to the outer wall of the mixing pipe (2), and the mounting bearing (161) can rotate on the mixing pipe; The mixing pipe (2) is provided with a driving fan (17), the driving fan (17) is drivingly connected with a bevel gear A (171) through a fan rotating shaft (173), the bevel gear A (171) is engaged with a bevel gear C (183), the bevel gear C (183) is drivingly connected with a bevel gear B (182) through a transmission rotating shaft (181), the transmission rotating shaft (181) penetrates the mixing pipe (2), and the bevel gear B (182) drives the mounting bearing (161) to rotate; The combustion nozzle (3) is provided with an anti-backfire plate (8), a plurality of flame acceleration small holes are uniformly arranged on the anti-backfire plate (8), and the ignition rod (7) penetrates the flame acceleration small holes.

2. A fully premixed intelligent pilot light suitable for use in a pure oxygen combustor according to claim 1, characterized in that: The transmission rotating shaft (181) is rotatably connected to the mixing pipe (2) through a sealing bearing, and the connection between the transmission rotating shaft (181) and the mixing pipe (2) is sealed by the sealing bearing.

3. A fully premixed intelligent pilot light suitable for use in a pure oxygen combustor according to claim 1, characterized in that: The outer ring of the mounting bearing (161) is fixedly connected with an annular mounting base (162), the mounting bearing (161) is embedded in the middle of the mounting base (162), the connecting rod (191) is fixedly connected to the mounting base (162), the mounting base (162) is provided with a bevel gear (163) away from the connecting rod (191), and the bevel gear (163) is engaged with the bevel gear B (182).

4. A fully premixed intelligent pilot light suitable for use in a pure oxygen combustor according to claim 1, characterized in that: The fan rotating shaft (173) penetrates the fan bearing (172) and is rotatably connected to the fan bearing (172), and the fan bearing (172) is fixedly connected to the inner wall of the mixing pipe (2) through the fan mounting frame (174) which is uniformly arranged in the circumferential direction.

5. A fully premixed intelligent pilot light suitable for use in a pure oxygen combustor according to claim 1, wherein: The emergency shut-off valve (9), the pressure regulating valve (10), the pressure transmitter (11), the micro-adjusting valve (12), the oxygen regulating valve (13), the combustion controller (14) and the gas flowmeter (15) are sequentially arranged on the gas inlet pipe (4); The emergency shut-off valve (9), the oxygen regulating valve (13), the pressure transmitter (11) and the gas flowmeter (15) are sequentially arranged on the oxygen inlet pipe (5); The pressure regulating valve (10) is electrically connected to the combustion controller (14) and the ultraviolet flame detector (6).

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