Full-premixing whole-course ultralow-nitrogen gas combustion head device
The fully premixed ultra-low nitrogen gas combustion head device solves the problems of reducing thermal energy utilization and increasing condensate caused by the low nitrogen emission method of the existing burner, achieving safe and efficient combustion and low nitrogen oxide emissions.
Patent Information
- Application Number
- CN202422321562.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-24
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-09-24
AI Technical Summary
In existing burners, combustion methods such as external flue gas circulation or internal flue gas circulation plus staging and segmentation are used to achieve low nitrogen emissions, resulting in a reduced boiler thermal energy utilization rate and increased condensate consumption, which is not conducive to the use of burners.
The fully premixed and full-process ultra-low nitrogen gas combustion head device is used to detect flame signals through ion rods to control the gas source and power supply, and combine the cyclone component to realize the premix and subdivided mixing of natural gas and air, ensuring full combustion of gas and reducing nitrogen oxide NOx emissions.
The safety and thermal energy utilization of the burner are improved, and the emission of nitrogen oxide NOx is reduced, while maintaining the stability and safety of combustion.
Smart Images
Figure CN223306916U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gas burner equipment, in particular to a full-premixed full-process ultra-low nitrogen gas combustion head device. Background Art
[0002] With the rapid development of society, mankind has entered a period of transition from the era of industrial civilization to the era of ecological civilization. The new flue gas emission standards have reduced the concentration of smoke, CO, NOX, SO2, N2, H2O, CO2, sulfur compounds and other pollutants. For example, the local standards in Beijing and Hebei require that the NOX emissions of boiler exhaust gas be less than 30mg / Nm3; the local standards in Shanghai, Jiangsu, Zhejiang and other places require that the NOX emissions of boiler exhaust gas be less than 50mg / Nm3. Among the burners currently in use, the vast majority use flue gas external circulation or flue gas internal circulation plus staged and segmented combustion methods to achieve low nitrogen emission requirements. However, this type of structural design combustion method reduces the thermal energy utilization rate of the boiler and increases the consumption of condensed water, which is not conducive to the use of the burner. For this reason, we have proposed a fully premixed and full-process ultra-low nitrogen gas burner device. Utility Model Content
[0003] To address the above-mentioned issues, the present invention provides a fully premixed, full-process, ultra-low nitrogen gas burner. This solves the problem that most existing burners utilize combustion methods such as external flue gas recirculation or internal flue gas recirculation with staged and segmented combustion to achieve low nitrogen emissions. However, this structural design and combustion method reduces the boiler's thermal energy utilization rate and increases condensate consumption, making it unsuitable for burner use.
[0004] The utility model discloses a full premixed and full-range ultra-low nitrogen gas burner head device, comprising a flame tube assembly, a mixing section assembly is provided on one side of the flame tube assembly, a flame detector assembly is provided on the side of the mixing section assembly close to the flame tube assembly, a central fire stabilizing flame disk assembly is provided in the middle of the flame tube assembly and the mixing section assembly, a bypass ignition gun assembly is plugged into the middle of the central fire stabilizing flame disk assembly, and an ion rod is provided on one side of the central fire stabilizing flame disk assembly;
[0005] The central fire flame stabilizing disk assembly includes a central air outlet pipe assembly, which is fixedly connected to the mixing section assembly through a fixing frame. The end of the central air outlet pipe assembly away from the fixing frame is fixedly connected to the ion rod through an ion rod fixing frame. A cyclone assembly is sleeved on the outer side of the central air outlet pipe assembly. Two symmetrical flame stabilizing disks are provided on the side of the central air outlet pipe assembly away from the fixing frame, and the two flame stabilizing disks are fixedly connected by a fixing column.
[0006] In the above solution, the cyclone assembly includes a welding sleeve, which is connected to the outside of the central air outlet pipe assembly. A plurality of cyclone plates arranged in a matrix are provided on the outside of the welding sleeve. An outer ring is provided on the outside of the cyclone plates, and a mesh plate is provided on one side between the welding sleeve and the outer ring.
[0007] In the above scheme, the flame detector assembly includes a flame detector mounting base, which is fixedly installed above the mixing section assembly. A quick plug is fixedly installed on the flame detector mounting base. A flame detector is provided on the side of the flame detector mounting base away from the quick plug, and a first cable lock is provided on the flame detector.
[0008] In the above scheme, the bypass ignition gun assembly includes an ignition tube assembly, which is inserted into the center air outlet pipe assembly. The ignition tube assembly is fixedly connected to the center air outlet pipe assembly through an ignition tube fixing frame. An ignition needle fixing frame is provided at one end of the ignition tube assembly away from the ignition tube fixing frame, and a double row of ignition needles are fixedly installed on the ignition needle fixing frame.
[0009] In the above solution, a second cable lock is provided below the end of the mixing section assembly away from the flame tube assembly.
[0010] In the above solution, a G3 / 4 joint body is provided on the side wall of the mixing section assembly away from the flame tube assembly, and a G1 / 2 joint body is provided below the G3 / 4 joint body.
[0011] The advantages and beneficial effects of the present invention are as follows: the present invention provides a fully premixed and full-process ultra-low nitrogen gas burner head device. When there is a flame at the front end of the flame tube, the ion rod detects the flame signal. After the signal is transmitted to the program controller through the signal amplifier, the controller issues an instruction to cut off the running gas source and power supply to ensure combustion safety. The cyclone component can premix the natural gas and air through the mesh plate and the swirl plate, and deliver the fully mixed gas into the furnace by subdividing the fully mixed gas, so that the gas can be fully and completely burned, thereby effectively ensuring the temperature of the fire scene at the center, and is more conducive to reducing the emission of nitrogen oxides NOx. The burner has a reasonable structure and layout, is beautiful and generous, has high combustion safety, and the gas and oxygen can be fully mixed, which effectively reduces the emission of nitrogen oxides. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0013] Figure 1 This is a first structural diagram of the utility model;
[0014] Figure 2 This is a second structural diagram of the present utility model;
[0015] Figure 3 It is a cross-sectional view of the utility model;
[0016] Figure 4 This is a schematic structural diagram of part A of the utility model;
[0017] Figure 5 This is a schematic structural diagram of the central fire stabilizing disk assembly of the utility model;
[0018] Figure 6 This is a schematic diagram of the structure of the cyclone assembly of the utility model;
[0019] Figure 7 This is a schematic structural diagram of the bypass ignition gun assembly of the present utility model.
[0020] In the figure: 1, flame tube assembly 2, mixing section assembly 3, flame detector assembly 31, flame detector mounting base 32, quick plug 33, flame detector 34, first cable lock 4, center fire flame stabilizing disk assembly 41, center outlet pipe assembly 42, fixing frame 43, ion rod fixing frame 44, cyclone assembly 441, welding sleeve 442, swirl sheet 443, outer ring 444, mesh plate 45, flame stabilizing disk 46, fixing column 5, bypass ignition gun assembly 51, ignition tube assembly 52, ignition tube fixing frame 53, ignition needle fixing frame 54, double row ignition needle 6, ion rod 7, second cable lock 8, G3 / 4 connector body 9, G1 / 2 connector body. DETAILED DESCRIPTION
[0021] The following embodiments are used to further describe the specific embodiments of the present invention in conjunction with the accompanying drawings and examples. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.
[0022] like Figure 1-7As shown, the utility model is a full premixed full-range ultra-low nitrogen gas burner head device, including a flame tube assembly 1, characterized in that a mixing section assembly 2 is provided on one side of the flame tube assembly 1, a flame detector assembly 3 is provided on the mixing section assembly 2 close to the side of the flame tube assembly 1, a central fire stabilizing flame disk assembly 4 is provided in the middle of the flame tube assembly 1 and the mixing section assembly 2, a bypass ignition gun assembly 5 is plugged into the middle of the central fire stabilizing flame disk assembly 4, and an ion rod 6 is provided on one side of the central fire stabilizing flame disk assembly 4. If a flame phenomenon appears at the front end of the flame tube assembly 1, the ion rod 9 immediately detects the flame signal, and transmits the signal to the burner program controller through the ion rod signal amplifier to immediately cut off the gas source and power supply of the burner at the same time to ensure the safety of the burner;
[0023] The central fire flame stabilizing disk assembly 4 includes a central air outlet pipe assembly 41, which is fixedly connected to the mixing section assembly 2 through a fixing frame 42. The end of the central air outlet pipe assembly 41 away from the fixing frame 42 is fixedly connected to the ion rod 6 through an ion rod fixing frame 43. A cyclone assembly 44 is sleeved on the outer side of the central air outlet pipe assembly 41. Two symmetrical flame stabilizing disks 45 are provided on the side of the central air outlet pipe assembly 41 away from the fixing frame 42, and the two flame stabilizing disks 45 are fixedly connected by a fixing column 46.
[0024] The cyclone assembly 44 includes a welding sleeve 441, which is sleeved on the outside of the central air outlet pipe assembly 41. A plurality of swirl plates 442 arranged in a matrix are provided on the outside of the welding sleeve 441. An outer ring 443 is provided on the outside of the swirl plates 442. A mesh plate 444 is provided on one side between the welding sleeve 441 and the outer ring 443. The cyclone assembly 44 can transport the premixed natural gas of natural gas and air through the mesh plate 444 and the swirl plates 442, and deliver the fully mixed gas into the furnace by subdividing the mixed gas, so that the gas is fully and completely burned, thereby effectively ensuring the temperature of the fire at the center and being more conducive to reducing the emission of nitrogen oxides NOx.
[0025] The flame detector assembly 3 includes a flame detector mounting base 31, which is fixedly installed above the mixing section assembly 2. A quick plug 32 is fixedly installed on the flame detector mounting base 31. A flame detector 33 is provided on the side of the flame detector mounting base 31 away from the quick plug 32. A first cable lock 34 is provided on the flame detector 33. The quick plug 32 is directly tightened on the flame detector mounting base 31 and connected to instrument air from the outside to cool the flame detector 33, ensuring long-term normal operation of the burner. The first cable lock 34 can fix the connecting wire of the flame detector 33.
[0026] The bypass ignition gun assembly 5 includes an ignition tube assembly 51, which is inserted into the center air outlet pipe assembly 41. The ignition tube assembly 51 is fixedly connected to the center air outlet pipe assembly 41 through an ignition tube fixing frame 52. An ignition needle fixing frame 53 is provided at one end of the ignition tube assembly 51 away from the ignition tube fixing frame 52. A double row of ignition needles 54 are fixedly mounted on the ignition needle fixing frame 53. The main function of the bypass ignition gun assembly 5 is to form an arc with the double row of ignition needles 54 after power is turned on, igniting the natural gas ejected from the ignition tube assembly 51, and igniting the burner with a small fire for normal combustion after 3 seconds. After 3 seconds, the bypass ignition stops running.
[0027] A second cable lock 7 is provided below the end of the mixing section assembly 2 away from the flame tube assembly 1. The second cable lock 7 is directly tightened on the mixing section assembly 2 to fix the ignition high-voltage wire to prevent the ignition high-voltage wire from vibrating under the action of wind pressure inside the mixing section assembly 2.
[0028] The side wall of the mixing section assembly 2 away from the flame tube assembly 1 is provided with a G3 / 4 joint body 8, and a G1 / 2 joint body 9 is provided below the G3 / 4 joint body 8. The G3 / 4 joint body 8 and the G1 / 2 joint body 9 can be connected to external natural gas pipelines respectively.
[0029] If flame appears at the front end of the flame tube assembly 1, the ion rod 9 immediately detects the flame signal, and transmits the signal to the burner program controller through the ion rod signal amplifier to immediately cut off the gas source and power supply of the burner to ensure the safety of the burner. The cyclone assembly 44 can mix the natural gas and air premixed through the mesh plate 444 and the swirl plate 442, and deliver the fully mixed gas into the furnace by subdividing the mixed gas, so that the gas can be fully and completely burned, thereby effectively ensuring the temperature of the fire scene at the center and being more conducive to reducing the emission of nitrogen oxides NOx. The main function of the bypass ignition gun assembly 5 is to form an arc with the double-row ignition needles 54 after power is turned on, igniting the natural gas ejected from the ignition tube assembly 51, and igniting the burner to burn normally with a small fire after 3 seconds. After 3 seconds, the bypass ignition stops running.
[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A fully premixed, full-range ultra-low nitrogen gas burner head device, comprising a flame tube assembly (1), characterized in that: A mixing section assembly (2) is provided on one side of the flame tube assembly (1); a flame detector assembly (3) is provided on the side of the mixing section assembly (2) close to the flame tube assembly (1); a central fire stabilizing disk assembly (4) is provided in the middle of the flame tube assembly (1) and the mixing section assembly (2); a bypass ignition gun assembly (5) is plugged into the middle of the central fire stabilizing disk assembly (4); and an ion rod (6) is provided on one side of the central fire stabilizing disk assembly (4); The central fire flame stabilizing disk assembly (4) comprises a central air outlet pipe assembly (41), the central air outlet pipe assembly (41) is fixedly connected to the mixing section assembly (2) via a fixing frame (42), the end of the central air outlet pipe assembly (41) away from the fixing frame (42) is fixedly connected to the ion rod (6) via an ion rod fixing frame (43), a cyclone assembly (44) is sleeved on the outer side of the central air outlet pipe assembly (41), and two symmetrical flame stabilizing disks (45) are provided on the side of the central air outlet pipe assembly (41) away from the fixing frame (42), and the two flame stabilizing disks (45) are fixedly connected via a fixing column (46).
2. A full premixed full process ultra-low nitrogen gas burner device according to claim 1, characterized in that: The cyclone assembly (44) comprises a welding sleeve (441), the welding sleeve (441) being sleeved on the outside of the central air outlet pipe assembly (41), a plurality of swirl sheets (442) arranged in a matrix being provided on the outside of the welding sleeve (441), an outer ring (443) being provided on the outside of the swirl sheets (442), and a mesh plate (444) being provided on one side between the welding sleeve (441) and the outer ring (443).
3. The full premixed and full-process ultra-low nitrogen gas burner device according to claim 1 is characterized in that: The flame detector assembly (3) comprises a flame detector mounting base (31), the flame detector mounting base (31) being fixedly mounted above the mixing section assembly (2), a quick plug (32) being fixedly mounted on the flame detector mounting base (31), a flame detector (33) being provided on a side of the flame detector mounting base (31) away from the quick plug (32), and a first cable lock (34) being provided on the flame detector (33).
4. A full premixed full process ultra-low nitrogen gas burner device according to claim 1, characterized in that: The bypass ignition gun assembly (5) comprises an ignition tube assembly (51), the ignition tube assembly (51) is plugged into the interior of the central air outlet pipe assembly (41), the ignition tube assembly (51) is fixedly connected to the central air outlet pipe assembly (41) via an ignition tube fixing frame (52), an ignition needle fixing frame (53) is provided at one end of the ignition tube assembly (51) away from the ignition tube fixing frame (52), and a double row of ignition needles (54) are fixedly mounted on the ignition needle fixing frame (53).
5. The full premixed and full ultra-low nitrogen gas burner device according to claim 1 is characterized in that: A second cable lock (7) is provided below one end of the mixing section assembly (2) away from the flame tube assembly (1).
6. The full premixed and full ultra-low nitrogen gas burner device according to claim 1 is characterized in that: A G3 / 4 joint body (8) is provided on the side wall of one end of the mixing section assembly (2) away from the flame tube assembly (1), and a G1 / 2 joint body (9) is provided below the G3 / 4 joint body (8).