Low-heating-value low-nitrogen bottom combustion temperature self-adjusting combustor

Abstract

The invention discloses a low-calorific-value low-nitrogen bottom combustion temperature self-adjusting burner, and relates to the field of heat energy engineering, the low-calorific-value low-nitrogen bottom combustion temperature self-adjusting burner comprises a switching assembly and a gas nozzle assembly, the switching assembly comprises a switching cover, and the bottom of the switching cover is fixedly connected with a bottom cover plate through four hexagon socket screws; the rear portion of the adapter cover is fixedly connected with a rear cover plate through four hexagon socket screws, the interior of the adapter cover penetrates through the top and is fixedly connected with an air cylinder, the top of the air cylinder is fixedly connected with a butt flange, the top of the air cylinder is fixedly connected with a fire gathering cover through the butt flange, and the top of the fire gathering cover is fixedly connected with a necking opening. Through the arrangement of the switching assembly and the fuel gas nozzle assembly, combustion-supporting air is divided into rotational flow combustion-supporting air, central combustion-supporting air and peripheral combustion-supporting air, fuel gas is divided into central fuel gas and peripheral fuel gas, the fuel gas and the combustion-supporting air can be mixed and combusted in different modes, and the beneficial effect of optimizing the combustion process is achieved.

Description

Technical Field

[0001] The invention relates to the field of thermal energy engineering, and in particular to a low calorific value and low nitrogen bottom burning temperature self-regulating burner. Background Art

[0002] Burner is a key equipment widely used in industrial boilers to mix fuel and air and burn them efficiently to generate heat. It usually consists of a fuel supply system, an air supply system, an ignition device, a combustion chamber and a control system.

[0003] There are a large number of vertical bottom-fired heating furnaces on site in the wild oil fields. These heating furnaces use earthen burners for combustion operations. Since they use natural induced draft, the air volume cannot be accurately controlled, which can easily cause air-fuel ratio imbalance. This will not only lead to incomplete combustion, causing a large amount of carbon monoxide to be produced in the flue gas, causing serious pollution to the surrounding environment, but also reduce the thermal efficiency of the boiler. In addition, the earthen burners are greatly affected by environmental factors. When the external wind increases, or the calorific value or pressure of the gas changes suddenly, the earthen burners are very easy to extinguish, which will not only interfere with normal production, but also pose a safety hazard. Summary of the invention

[0004] The main purpose of the present invention is to provide a low calorific value and low nitrogen bottom burning temperature self-regulating burner, which can effectively solve the technical problems in the background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A low calorific value, low nitrogen bottom-burning temperature self-regulating burner comprises an adapter assembly and a gas nozzle assembly, wherein the adapter assembly comprises an adapter cover, the bottom of the adapter cover is fixedly connected to a bottom cover plate by four hexagon socket bolts, the rear of the adapter cover is fixedly connected to a rear cover plate by four hexagon socket bolts, the inside of the adapter cover is fixedly connected to a wind tube through the top, the top of the wind tube is fixedly connected to a docking flange, the top of the wind tube is fixedly connected to a fire hood by the docking flange, and the top of the fire hood is fixedly connected to a shrinkage;

[0007] The gas nozzle assembly includes a flame stabilizing disk, the interior of the adapter cover is fixedly connected to a fixed base near the bottom, the bottom of the fixed base passes through the top and is fixedly connected to a bottom column, the top of the bottom column is fixedly connected to a gas main pipe 1, a gas grading main pipe is arranged inside the adapter cover and inside the wind tube, the bottom of the gas grading main pipe is fixedly connected to one end of the gas main pipe 1, six branch pipes are equidistantly fixedly connected to the outer surface of the gas grading main pipe, and the branch pipes are connected to the interior of the gas grading main pipe, a nozzle is fixedly connected to the top of the branch pipe, three connecting columns are equidistantly fixedly connected to the top of the gas grading main pipe, the top of the gas grading main pipe is connected to the flame stabilizing disk through the three connecting columns, the flame stabilizing disk is located inside the fire gathering cover, a plurality of center holes are opened at the center position of the top of the flame stabilizing disk, six swirl blades are equidistantly rotatably connected to the interior of the flame stabilizing disk, and three nozzles are equidistantly fixedly connected to the top of the gas grading main pipe.

[0008] As a further solution of the present invention, the top of the gas grading main pipe is in a closed state, the bottom of the nozzle is connected to the interior of the gas grading main pipe, and the outer surface of the gas grading main pipe is symmetrically fixedly connected to two connecting seats, and the interiors of the two connecting seats are fixedly connected with connecting copper sleeves, one of the connecting copper sleeves has a temperature sensor fixedly connected thereto, and the top of the temperature sensor passes through the top of the flame stabilizing disk, and the other connecting copper sleeve has an ignition pin fixedly connected thereto, and the top of the ignition pin passes through the top of the flame stabilizing disk, and the top of the ignition pin is curved.

[0009] As a further solution of the present invention, a pair of fixing ear seats are fixedly connected to the outer surface of the base column and located on the top of the fixed base, the fixing ear seats are connected to the fixed base by hexagon socket bolts, and a fixing rod is fixedly connected to the outer surface of the gas grading main pipe near the bottom, and the fixing rod is connected to the adapter cover by hexagon socket bolts.

[0010] As a further solution of the present invention, a mixing assembly is provided at the front part of the adapter cover, and the mixing assembly includes a mixing front end pipe and a mixing rear end pipe, a mixing fixed flange is fixedly connected between the mixing front end pipe and the mixing rear end pipe, a gas intake pipe is provided on the outer surface of the mixing front end pipe near the top, and an intake fixed flange is fixedly connected between the gas intake pipe and the mixing front end pipe.

[0011] As a further solution of the present invention, a mixing rear end connecting flange is fixedly connected between the rear portion of the mixing rear end pipe and the front portion of the adapter cover, and a mixing front end connecting flange is fixedly connected to the front portion of the mixing front end pipe.

[0012] As a further solution of the present invention, a gas main pipe assembly is arranged inside the mixed front end pipe and the mixed rear end pipe, and the gas main pipe assembly includes a gas main pipe 2 and a gas hose. A pipe quick-release connecting buckle is arranged at the front of the gas main pipe 1, and the gas main pipe 1 and the gas hose are connected to each other via the pipe quick-release connecting buckle. A butt buckle is arranged at the front of the gas hose, and the gas hose and the gas main pipe 2 are connected to each other via the butt buckle. An air intake butt pipe is fixedly connected to the top of the gas main pipe 2, and the air intake butt pipe is communicated with the gas intake pipe.

[0013] As a further solution of the present invention, the outer surface of the second gas main pipe is fixedly connected to a docking seat near the bottom, a fixing column is provided on the inner wall of the mixing front end pipe, the outer surface of the mixing front end pipe is threadedly connected to a fixing bolt near the bottom, and the bottom of the docking seat is connected to the fixing column by a fixing bolt.

[0014] As a further scheme of the present invention, an air supply assembly is provided at the front part of the mixing front-end pipe, and the air supply assembly includes a fan body, and an air supply connecting flange is fixedly connected to the rear part of the fan body, and the air supply connecting flange and the mixing front-end connecting flange are fixed to each other by four hexagonal bolts, and an air inlet pipe is fixedly connected to one side through the interior of the fan body, and a baffle is rotatably connected to the interior of the air inlet pipe, and two fixed brackets are fixedly connected to the outer surface of the air inlet pipe near the top, and the tops of the two fixed brackets are fixedly connected to the actuator, and the other side of the fan body is fixedly connected to the motor.

[0015] As a further solution of the present invention, the output shaft of the actuator is fixedly connected to the rotating shaft of the baffle, and the output shaft of the motor is fixedly connected to the fan blades inside the fan body.

[0016] As a further solution of the present invention, a fixing seat is fixedly connected to one side of the adapter cover, and a flame detector is fixedly connected to the fixing seat through the inside of the adapter cover.

[0017] The beneficial effects of the present invention are as follows:

[0018] By setting up the adapter assembly and the gas nozzle assembly, the combustion-supporting air is divided into swirl combustion-supporting air, central combustion-supporting air and peripheral combustion-supporting air, and the gas is divided into central gas and peripheral gas, so that the gas and the combustion-supporting air can be mixed and burned in different ways, achieving the beneficial effect of optimizing the combustion process;

[0019] By setting the flame stabilizing plate, swirl blades and center hole, the center gas is impacted by the center combustion-supporting wind to disperse the flame and stabilize the combustion, reduce the flame dispersion temperature, reduce the generation of nitrogen oxides, and achieve the beneficial effect of reducing nitrogen oxide emissions;

[0020] By setting the constriction, the mixed gas is guided to gather toward the center and form a swirl, the incompletely burned gas is sucked in to participate in the combustion, and the smoke generated after combustion and the unburned mixed combustible gas are sucked back to participate in the combustion, thereby achieving the beneficial effects of improving the degree of complete combustion, improving combustion efficiency, making full use of fuel and reducing energy waste;

[0021] By setting a temperature sensor and an actuator, according to the flame temperature detected by the temperature sensor, the actuator drives the baffle to rotate and adjust the air door opening to adapt to the changes in the calorific value and pressure of the gas, thereby achieving the beneficial effect of avoiding safety hazards such as flameout;

[0022] By setting structures such as fixed ears, fixed rods, fixed seats, fixed bolts, etc., each component is stably fixed, so as to achieve the beneficial effect of stabilizing the overall structure of the burner, ensuring the stability of the gas grading main pipe, and thus ensuring the gas transmission and flame stability;

[0023] By providing a butt buckle, a quick-release pipe connection buckle and a mixed fixing flange, the gas main pipe 2 and the gas hose, the gas hose and the gas main pipe 1, and the mixed front pipe and the mixed rear pipe can be quickly butted and fixedly connected to ensure stable gas transportation, thereby achieving the beneficial effect of facilitating the installation, disassembly and maintenance of the burner gas transportation pipeline, so that the burner can be quickly assembled when used on-site in an oil field, while also reducing the time and labor costs required for repairing and replacing parts, and improving the operability and practicality of the entire burner;

[0024] Since the various components are fixedly connected by various flanges and hexagon socket bolts, the flanges can ensure the sealing of the connections between the various components. This connection method ensures the sealing of the gas during transportation, avoids the risk of gas leakage, improves the safety of burner use, and can better maintain the stability of the entire gas transportation system when the gas composition and pressure change, ensure the stable supply of gas, and then ensure the continuous and stable progress of the combustion process, providing a reliable basic condition for realizing the self-regulating function of the low calorific value and low nitrogen bottom burning temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of a low calorific value, low nitrogen bottom burning temperature self-regulating burner of the present invention;

[0026] Figure 2 This is a schematic diagram of the overall structure of a low calorific value, low nitrogen bottom burning temperature self-regulating burner according to the present invention;

[0027] Figure 3 This is a schematic diagram of a transfer assembly of a low calorific value, low nitrogen bottom-firing temperature self-regulating burner according to the present invention;

[0028] Figure 4A structural diagram showing a gas nozzle assembly and a gas main assembly of a low calorific value, low nitrogen bottom-firing temperature self-regulating burner according to the present invention;

[0029] Figure 5 It is a left view of a gas nozzle assembly of a low calorific value, low nitrogen bottom-firing temperature self-regulating burner of the present invention;

[0030] Figure 6 This is a diagram of the mixing components of a low calorific value, low nitrogen bottom burning temperature self-regulating burner of the present invention;

[0031] Figure 7 This is a diagram showing the air supply assembly of a low calorific value, low nitrogen bottom-firing temperature self-regulating burner according to the present invention.

[0032] In the figure: 1. air supply assembly; 2. mixing assembly; 3. adapter assembly; 4. gas nozzle assembly; 5. temperature sensor; 6. ignition needle; 7. fixing seat; 8. flame detector; 9. gas main pipe assembly; 10. fan body; 11. air inlet pipe; 12. baffle; 13. fixing bracket; 14. actuator; 15. air supply connection flange; 16. motor; 17. mixing front end pipeline; 18. mixing rear end pipeline; 19. mixing fixing flange; 20. air inlet fixing flange; 21. gas inlet pipe; 22. mixing front end connecting flange; 23. mixing rear end connecting flange; 24. fixing column; 25. adapter cover; 26. Rear cover; 27. Bottom cover; 28. Air duct; 29. ​​Docking flange; 30. Fire hood; 31. Narrowing; 32. Fixed base; 33. Air intake butt pipe; 34. Gas main pipe 2; 35. Docking seat; 36. Fixing bolts; 37. Docking buckle; 38. Gas hose; 39. Gas main pipe 1; 40. Pipe quick-release connector; 41. Gas grading main pipe; 42. Flame stabilizing plate; 43. Connecting column; 44. Nozzle; 45. Center hole; 46. Swirl blade; 47. Branch pipe; 48. Nozzle; 49. Connecting seat; 50. Connecting copper sleeve; 51. Fixing rod; 52. Bottom column; 53. Fixed ear seat. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0034] like Figure 1 - Figure 7As shown, a low calorific value and low nitrogen bottom burning temperature self-regulating burner includes an adapter assembly 3 and a gas nozzle assembly 4, the adapter assembly 3 includes an adapter cover 25, the bottom of the adapter cover 25 is fixedly connected to a bottom cover plate 27 by four hexagon socket bolts, the rear of the adapter cover 25 is fixedly connected to a rear cover plate 26 by four hexagon socket bolts, the inside of the adapter cover 25 is fixedly connected to a wind tube 28 through the top, the top of the wind tube 28 is fixedly connected to a docking flange 29, the top of the wind tube 28 is fixedly connected to a fire hood 30 by the docking flange 29, and the top of the fire hood 30 is fixedly connected to a shrinkage 31;

[0035] The gas nozzle assembly 4 includes a flame stabilizing plate 42, the interior of the adapter cover 25 is fixedly connected to a fixed base 32 near the bottom, the bottom of the fixed base 32 passes through the top and is fixedly connected to a bottom column 52, the top of the bottom column 52 is fixedly connected to a gas main pipe 39, the interior of the adapter cover 25 and the interior of the wind tube 28 are provided with a gas grading main pipe 41, the bottom of the gas grading main pipe 41 is fixedly connected to one end of the gas main pipe 39, the outer surface of the gas grading main pipe 41 is equidistantly fixedly connected to six branch pipes 47, and the branch pipes 47 are connected to the interior of the gas grading main pipe 41. The top of the branch pipe 47 is connected, a nozzle 48 is fixedly connected to the top of the gas grading main pipe 41, and three connecting columns 43 are equidistantly fixedly connected to the top of the gas grading main pipe 41. The top of the gas grading main pipe 41 is connected to the flame stabilizing plate 42 through the three connecting columns 43. The flame stabilizing plate 42 is located inside the fire hood 30. A plurality of center holes 45 are opened at the bottom of the top center position of the flame stabilizing plate 42. Six swirl blades 46 are equidistantly connected to the top of the flame stabilizing plate 42. The inside of the gas grading main pipe 41 is fixedly connected to three nozzles 44 at equidistant distances through the top of the flame stabilizing plate 42.

[0036] First, the combustion-supporting wind will enter the interior of the adapter cover 25 from the front of the adapter cover 25, and then blow upward along the wind tube 28. At this time, the combustion-supporting wind will be divided into three parts. The first part will blow upward against the six swirl blades 46 to form swirl combustion-supporting wind. The second part will blow upward along the plurality of center holes 45 to form center combustion-supporting wind. The third part will blow upward along the gap between the flame stabilizing plate 42 and the fire-collecting cover 30, and the combustion-supporting wind will hit the constriction 31, thereby flowing back to the top of the flame stabilizing plate 42 to form peripheral combustion-supporting wind.

[0037] Secondly, the gas enters the interior of the gas main pipe 39 from the front part thereof, and then is transported upward along the interior of the gas grading main pipe 41, and the gas is divided into two parts. The first part is sprayed out from the three nozzles 44 at the top of the gas grading main pipe 41 to form the central gas, and the second part is transported upward along the six branch pipes 47 through the nozzles 48 to the gap between the gas grading main pipe 41 and the wind tube 28, and along the gap between the flame stabilizing plate 42 and the flame hood 30, so that the second part of the gas is sprayed upward from the gap between the flame stabilizing plate 42 and the flame hood 30, thereby forming the peripheral gas, and the gas sprayed from the nozzles 48 is also sprayed upward along the central hole 45, thereby also forming the central gas;

[0038] At this time, the central gas ignites the ejected gas through the ignition needle 6, and the central gas is mixed with the central combustion-supporting wind and the swirl combustion-supporting wind and burns to form a swirl central fire. The central gas disperses the flame under the impact of the central combustion-supporting wind, and reduces the flow rate of the wind to make the combustion more stable. Under the premise of stability, the flame dispersion temperature is reduced, thereby reducing the generation of nitrogen oxides;

[0039] After the peripheral fuel gas is mixed with the peripheral combustion-supporting air, it flows out from the contraction 31 and burns to form a peripheral diffusion flame. In the process of flowing out through the contraction 31, the contraction 31 has an inwardly contracting structure to guide the mixed gas to gather towards the center and form a vortex outward, so that the smoke generated after combustion and the unburned mixed combustible gas are sucked back to the contraction 31 to participate in the combustion. Through the suction effect, the incompletely burned gas can re-enter the combustion area, thereby improving the completeness of combustion, improving combustion efficiency, making full use of fuel, and reducing energy waste.

[0040] In this embodiment, the top of the gas grading main pipe 41 is in a closed state, the bottom of the nozzle 44 is connected to the interior of the gas grading main pipe 41, and the outer surface of the gas grading main pipe 41 is symmetrically fixedly connected to two connecting seats 49, and the interiors of the two connecting seats 49 are fixedly connected to connecting copper sleeves 50, one of the connecting copper sleeves 50 is penetrated and fixedly connected with a temperature sensor 5, and the top of the temperature sensor 5 penetrates the top of the flame stabilizing disk 42, and the other connecting copper sleeve 50 is fixedly connected with an ignition needle 6, and the top of the ignition needle 6 penetrates the top of the flame stabilizing disk 42, and the top of the ignition needle 6 is curved.

[0041] The ignition needle 6 will ignite the central gas and the peripheral gas, thereby forming a swirl central fire and a peripheral diffusion fire, and the top of the temperature sensor 5 will detect the temperature of the peripheral diffusion flame and the central swirl central fire.

[0042] In this embodiment, a pair of fixing ear seats 53 are fixedly connected to the outer surface of the bottom column 52 and located at the top of the fixed base 32, and the fixing ear seats 53 are connected to the fixed base 32 by hexagon socket bolts. The outer surface of the gas grading main pipe 41 is fixedly connected to the bottom with a fixing rod 51, and the fixing rod 51 is connected to the adapter cover 25 by hexagon socket bolts.

[0043] The bottom column 52 can be fixedly connected to the fixed base 32 and the adapter cover 25 respectively by fixing the ear seat 53 and the fixing rod 51, so that the gas grading main pipe 41 is fixed. Therefore, when the gas is transported upward along the inside of the gas grading main pipe 41, the gas grading main pipe 41 can remain stable, thereby stabilizing the transportation of the gas, so that the peripheral dispersed fire and the swirl center fire can remain stable.

[0044] In this embodiment, a mixing assembly 2 is provided at the front of the adapter cover 25, and the mixing assembly 2 includes a mixing front end pipe 17 and a mixing rear end pipe 18, and a mixing fixed flange 19 is fixedly connected between the mixing front end pipe 17 and the mixing rear end pipe 18. A gas intake pipe 21 is provided on the outer surface of the mixing front end pipe 17 near the top, and an intake fixed flange 20 is fixedly connected between the gas intake pipe 21 and the mixing front end pipe 17.

[0045] In this embodiment, a mixing rear end connection flange 23 is fixedly connected between the rear portion of the mixing rear end pipe 18 and the front portion of the adapter cover 25 , and a mixing front end connection flange 22 is fixedly connected to the front portion of the mixing front end pipe 17 .

[0046] In this embodiment, a gas main pipe assembly 9 is arranged inside the mixing front end pipe 17 and the mixing rear end pipe 18. The gas main pipe assembly 9 includes a gas main pipe 2 34 and a gas hose 38. A pipe quick-release connector 40 is arranged at the front of the gas main pipe 1 39. The gas main pipe 1 39 and the gas hose 38 are connected to each other via the pipe quick-release connector 40. A docking buckle 37 is arranged at the front of the gas hose 38. The gas hose 38 and the gas main pipe 2 34 are connected to each other via the docking buckle 37. An air intake docking pipe 33 is fixedly connected to the top of the gas main pipe 2 34. The air intake docking pipe 33 is communicated with the gas intake pipe 21.

[0047] The gas passes through the gas inlet pipe 21 and enters the interior of the gas main pipe 2 34 along the gas inlet butt pipe 33, and then flows through the butt buckle 37, the gas hose 38 and the pipeline quick-release connection buckle 40, so that the gas can be transported along the gas main pipe 1 39 and to the interior of the gas grading main pipe 41, thereby forming central gas and peripheral gas.

[0048] In this embodiment, the outer surface of the gas main pipe 34 is fixedly connected to a docking seat 35 near the bottom, the inner wall of the mixing front end pipe 17 is provided with a fixing column 24, the outer surface of the mixing front end pipe 17 is threadedly connected to a fixing bolt 36 near the bottom, and the bottom of the docking seat 35 is connected to the fixing column 24 by the fixing bolt 36.

[0049] Through the cooperation of the docking seat 35, the fixing column 24 and the fixing bolts 36, the second gas main pipe 34 can be fixed inside the mixing front end pipe 17, avoiding the unstable gas delivery caused by the shaking of the second gas main pipe 34 during gas delivery.

[0050] In this embodiment, an air supply assembly 1 is provided at the front of the mixing front-end pipe 17, and the air supply assembly 1 includes a fan body 10, and an air supply connecting flange 15 is fixedly connected to the rear of the fan body 10. The air supply connecting flange 15 and the mixing front-end connecting flange 22 are fixed to each other by four hexagonal bolts. An air inlet pipe 11 is fixedly connected to one side of the interior of the fan body 10, and a baffle 12 is rotatably connected to the interior of the air inlet pipe 11. Two fixed brackets 13 are fixedly connected to the outer surface of the air inlet pipe 11 near the top, and an actuator 14 is fixedly connected to the top of the two fixed brackets 13. The other side of the fan body 10 is fixedly connected to the motor 16.

[0051] The actuator 14 is started to drive the baffle 12 to rotate inside the air inlet pipe 11, thereby opening one end of the air inlet pipe 11. At this time, the motor 16 is started again to drive the fan blades inside the fan body 10 to rotate, thereby sucking the external wind into the fan body 10 along one end of the air inlet pipe 11, and then the wind is transported to the inside of the mixing front end pipe 17 along the rear part of the fan body 10, and then blown to the inside of the adapter cover 25 along the inside of the mixing rear end pipe 18, thereby forming swirling combustion-supporting wind, peripheral combustion-supporting wind and central combustion-supporting wind;

[0052] When the gas composition changes and the calorific value decreases or the gas pressure decreases, the temperature sensor 5 will detect that the flame temperature formed is reduced. When the temperature is lower than the set temperature, the actuator 14 will receive the temperature signal transmitted by the temperature sensor 5, thereby driving the baffle 12 to rotate, reducing the gap between the baffle 12 and the air inlet pipe 11, thereby reducing the damper opening until the flame temperature meets the set temperature. When the gas composition changes and the calorific value increases or the gas pressure increases, the temperature sensor 5 will detect that the flame temperature formed is increased. When the temperature is higher than the set temperature, the actuator 14 will receive the temperature signal transmitted by the temperature sensor 5, thereby driving the baffle 12 to rotate, increasing the gap between the baffle 12 and the air inlet pipe 11, thereby increasing the damper opening until the flame temperature meets the set temperature. Therefore, the rotation amplitude of the baffle 12 is adjusted and the damper opening is changed to adapt to changes in the calorific value and pressure of the on-site gas, thereby avoiding safety hazards such as flameout.

[0053] In this embodiment, the output shaft of the actuator 14 is fixedly connected to the rotating shaft of the baffle 12 , and the output shaft of the motor 16 is fixedly connected to the fan blades inside the fan body 10 .

[0054] In this embodiment, a fixing seat 7 is fixedly connected to one side of the adapter cover 25 , and a flame detector 8 is fixedly connected to the inside of the adapter cover 25 through the fixing seat 7 .

[0055] It should be noted that the present invention is a low calorific value, low nitrogen bottom burning temperature self-regulating burner. When in use, first, the combustion-supporting wind will enter the interior of the adapter cover 25 from the front of the adapter cover 25, and then blow upward along the wind tube 28. At this time, the combustion-supporting wind will be divided into three parts. The first part will blow upward against the six swirl blades 46 to form a swirl combustion-supporting wind. The second part will blow upward along a plurality of center holes 45 to form a central combustion-supporting wind. The third part will blow upward along the gap between the flame stabilizing disk 42 and the fire hood 30, and the combustion-supporting wind will hit the constriction 31, thereby flowing back to the top of the flame stabilizing disk 42 to form a peripheral combustion-supporting wind.

[0056] Secondly, the gas will pass through the gas inlet pipe 21 and enter the interior of the gas main pipe 2 34 along the gas inlet butt pipe 33, and then flow through the butt buckle 37, the gas hose 38 and the pipeline quick-release connection buckle 40, so that the gas can be transported along the gas main pipe 1 39 and to the interior of the gas grading main pipe 41. The gas enters the interior of the gas main pipe 1 39 from the front part of the gas main pipe 1 39, and then is transported upward along the interior of the gas grading main pipe 41, and the gas is divided into two parts. The first part is sprayed from the three nozzles 44 at the top of the gas grading main pipe 41 to form the central gas, and the second part is transported upward along the six branch pipes 47 through the nozzle 48 to the gap between the gas grading main pipe 41 and the wind tube 28, so that the second part of the gas will be sprayed upward from the gap between the flame stabilizing plate 42 and the fire hood 30, so as to form peripheral gas, and the gas sprayed from the nozzle 48 will also be sprayed upward along the center hole 45, so as to also form the central gas;

[0057] At this time, the central gas ignites the ejected gas through the ignition needle 6, and the central gas is mixed with the central combustion-supporting wind and the swirl combustion-supporting wind and burns to form a swirl central fire. The central gas disperses the flame under the impact of the central combustion-supporting wind, and reduces the flow rate of the wind to make the combustion more stable. Under the premise of stability, the flame dispersion temperature is reduced, thereby reducing the generation of nitrogen oxides;

[0058] The peripheral gas and the peripheral combustion-supporting air are mixed and flow out from the constriction 31 and burn, forming a peripheral diffusion flame. In the process of flowing out through the constriction 31, the constriction 31 is inwardly contracted to guide the mixed gas to gather toward the center and form a vortex outward, so that the smoke generated after combustion and the unburned mixed combustible gas are sucked back to the constriction 31 to participate in the combustion. Through the suction effect, the incompletely burned gas can enter the combustion area again, thereby improving the completeness of combustion, improving the combustion efficiency, making full use of fuel, and reducing energy waste.

[0059] The actuator 14 is started to drive the baffle 12 to rotate inside the air inlet pipe 11, thereby opening one end of the air inlet pipe 11. At this time, the motor 16 is started again to drive the fan blades inside the fan body 10 to rotate, thereby sucking the external wind into the fan body 10 along one end of the air inlet pipe 11, and then the wind is transported to the inside of the mixing front end pipe 17 along the rear part of the fan body 10, and then blown to the inside of the adapter cover 25 along the inside of the mixing rear end pipe 18, thereby forming swirling combustion-supporting wind, peripheral combustion-supporting wind and central combustion-supporting wind;

[0060] When the gas composition changes and the calorific value decreases or the gas pressure decreases, the temperature sensor 5 will detect that the flame temperature formed is reduced. When the temperature is lower than the set temperature, the actuator 14 will receive the temperature signal transmitted by the temperature sensor 5, thereby driving the baffle 12 to rotate, reducing the gap between the baffle 12 and the air inlet pipe 11, thereby reducing the damper opening until the flame temperature meets the set temperature. When the gas composition changes and the calorific value increases or the gas pressure increases, the temperature sensor 5 will detect that the flame temperature formed is increased. When the temperature is higher than the set temperature, the actuator 14 will receive the temperature signal transmitted by the temperature sensor 5, thereby driving the baffle 12 to rotate, increasing the gap between the baffle 12 and the air inlet pipe 11, thereby increasing the damper opening until the flame temperature meets the set temperature. Therefore, the rotation amplitude of the baffle 12 is adjusted and the damper opening is changed to adapt to changes in the calorific value and pressure of the on-site gas, thereby avoiding safety hazards such as flameout.

[0061] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A low calorific value, low nitrogen bottom burning temperature self-regulating burner, comprising a transfer assembly (3) and a gas nozzle assembly (4), characterized in that: The adapter assembly (3) comprises an adapter cover (25), the bottom of the adapter cover (25) is fixedly connected to a bottom cover plate (27) via four hexagon socket bolts, the rear of the adapter cover (25) is fixedly connected to a rear cover plate (26) via four hexagon socket bolts, the interior of the adapter cover (25) is penetrated through the top and fixedly connected to a wind tube (28), the top of the wind tube (28) is fixedly connected to a docking flange (29), the top of the wind tube (28) is fixedly connected to a fire hood (30) via the docking flange (29), and the top of the fire hood (30) is fixedly connected to a shrinkage (31); The gas nozzle assembly (4) comprises a flame stabilizing plate (42); the interior of the adapter cover (25) is fixedly connected to a fixed base (32) near the bottom; the bottom of the fixed base (32) passes through the top and is fixedly connected to a bottom column (52); the top of the bottom column (52) is fixedly connected to a gas main pipe (39); a gas grading main pipe (41) is arranged inside the adapter cover (25) and inside the wind tube (28); the bottom of the gas grading main pipe (41) is fixedly connected to one end of the gas main pipe (39); six branch pipes (47) are equidistantly fixedly connected to the outer surface of the gas grading main pipe (41); and the branch pipes (47) are connected to the gas grading main pipe (41). The top of the branch pipe (47) is fixedly connected to a nozzle (48); the top of the gas staging main pipe (41) is equidistantly fixedly connected to three connecting columns (43); the top of the gas staging main pipe (41) is connected to a flame stabilizing disk (42) through the three connecting columns (43); the flame stabilizing disk (42) is located inside the fire hood (30); a plurality of center holes (45) are opened through the bottom of the top center position of the flame stabilizing disk (42); six swirl blades (46) are equidistantly connected to the top of the flame stabilizing disk (42); and three nozzles (44) are equidistantly fixedly connected to the top of the gas staging main pipe (41).

2. A low calorific value, low nitrogen bottom burning temperature self-regulating burner according to claim 1, characterized in that: The top of the gas grading main pipe (41) is in a closed state, the bottom of the nozzle (44) is connected to the inside of the gas grading main pipe (41), and the outer surface of the gas grading main pipe (41) is symmetrically fixedly connected to two connecting seats (49), and the insides of the two connecting seats (49) are fixedly connected to connecting copper sleeves (50), and the inside of one of the connecting copper sleeves (50) is penetrated and fixedly connected with a temperature sensor (5), and the top of the temperature sensor (5) penetrates the top of the flame stabilizing disk (42), and the inside of the other connecting copper sleeve (50) is fixedly connected with an ignition needle (6), and the top of the ignition needle (6) penetrates the top of the flame stabilizing disk (42), and the top of the ignition needle (6) is arranged in a curved shape.

3. The low calorific value and low nitrogen bottom burning temperature self-regulating burner according to claim 1 is characterized in that: A pair of fixing ears (53) are fixedly connected to the outer surface of the bottom column (52) and located at the top of the fixing base (32); the fixing ears (53) and the fixing base (32) are connected via hexagon socket bolts; a fixing rod (51) is fixedly connected to the outer surface of the gas grading main pipe (41) near the bottom; the fixing rod (51) and the adapter cover (25) are connected via hexagon socket bolts.

4. The low calorific value and low nitrogen bottom burning temperature self-regulating burner according to claim 1 is characterized in that: A mixing assembly (2) is arranged at the front of the adapter cover (25), and the mixing assembly (2) comprises a mixing front end pipe (17) and a mixing rear end pipe (18), a mixing fixing flange (19) is fixedly connected between the mixing front end pipe (17) and the mixing rear end pipe (18), a gas intake pipe (21) is arranged on the outer surface of the mixing front end pipe (17) near the top, and an intake fixing flange (20) is fixedly connected between the gas intake pipe (21) and the mixing front end pipe (17).

5. A low calorific value, low nitrogen bottom burning temperature self-regulating burner according to claim 4, characterized in that: A mixing rear end connection flange (23) is fixedly connected between the rear portion of the mixing rear end pipe (18) and the front portion of the adapter cover (25), and a mixing front end connection flange (22) is fixedly connected to the front portion of the mixing front end pipe (17).

6. A low calorific value, low nitrogen bottom burning temperature self-regulating burner according to claim 4, characterized in that: A gas main pipe assembly (9) is arranged inside the mixing front end pipe (17) and the mixing rear end pipe (18), and the gas main pipe assembly (9) comprises a second gas main pipe (34) and a gas hose (38). A pipe quick-release connection buckle (40) is arranged at the front of the first gas main pipe (39), and the first gas main pipe (39) and the gas hose (38) are connected to each other via the pipe quick-release connection buckle (40). A butt joint buckle (37) is arranged at the front of the gas hose (38), and the gas hose (38) and the second gas main pipe (34) are connected to each other via the butt joint buckle (37). An air intake butt joint pipe (33) is fixedly connected to the top of the second gas main pipe (34), and the air intake butt joint pipe (33) is connected to the gas intake pipe (21).

7. A low calorific value, low nitrogen bottom burning temperature self-regulating burner according to claim 6, characterized in that: The outer surface of the second gas main pipe (34) is fixedly connected to a docking seat (35) near the bottom, the inner wall of the mixing front end pipe (17) is provided with a fixing column (24), the outer surface of the mixing front end pipe (17) is threadedly connected to a fixing bolt (36) near the bottom, and the bottom of the docking seat (35) and the fixing column (24) are connected via the fixing bolt (36).

8. The low calorific value and low nitrogen bottom burning temperature self-regulating burner according to claim 5 is characterized in that: An air supply assembly (1) is provided at the front of the mixing front end pipe (17), and the air supply assembly (1) includes a fan body (10), and an air supply connection flange (15) is fixedly connected to the rear of the fan body (10), and the air supply connection flange (15) and the mixing front end connection flange (22) are fixed to each other by four hexagonal bolts, and an air inlet pipe (11) is fixedly connected to one side of the inside of the fan body (10), and a baffle (12) is rotatably connected to the inside of the air inlet pipe (11), and two fixed brackets (13) are fixedly connected to the outer surface of the air inlet pipe (11) near the top, and the tops of the two fixed brackets (13) are fixedly connected to the actuator (14). The other side of the fan body (10) is fixedly connected to the motor (16).

9. A low calorific value, low nitrogen bottom burning temperature self-regulating burner according to claim 8, characterized in that: The output shaft of the actuator (14) is fixedly connected to the rotating shaft of the baffle (12), and the output shaft of the motor (16) is fixedly connected to the fan blades inside the fan body (10).

10. The low calorific value and low nitrogen bottom burning temperature self-regulating burner according to claim 1, characterized in that: One side of the adapter cover (25) is fixedly connected to a fixing seat (7), and the interior of the adapter cover (25) penetrates the fixing seat (7) and is fixedly connected to a flame detector (8).

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