Plasma ignition burner for natural gas

Abstract

The utility model relates to the technical field of plasma ignition, and discloses a plasma ignition burner for natural gas, which comprises a connecting disc, a central gas pipe is fixedly connected inside the connecting disc, a spiral ring is arranged outside the central gas pipe, a plurality of protective shells are fixedly connected to the bottom of the connecting disc, and the protective shells are arranged in the central gas pipe. Electrode rods are fixedly connected to the interiors of the protection shells, plasma electrode tips are fixedly connected to the bottoms of the electrode rods, adjusting air discs are slidably connected to the exteriors of the multiple protection shells, a plurality of connecting holes are formed in the exteriors of the adjusting air discs, and bolts are in threaded connection to the exteriors of the central air pipes. The bottom of the bolt is fixedly connected with a cushion piece, and the bottom of the central gas pipe is fixedly connected with a flame nozzle. According to the utility model, the external thread at the gas outlet end of the central gas pipe can adjust the distance between the wind disc and the electrode tip according to the wind pressure of each user, so as to ensure the uniform dispersion of plasmas, thereby improving the ignition efficiency and stability.

Description

Technical Field

[0001] The utility model relates to the technical field of plasma ignition, in particular to a plasma ignition burner for natural gas. Background Art

[0002] The natural gas plasma ignition burner utilizes plasma technology and can quickly ignite natural gas. It has the characteristics of efficient ignition, energy saving, good stability, etc., and is applicable to fields such as industrial combustion and gas turbines. It can work under different pressures and flows and requires regular inspection and maintenance. It is a reliable device for natural gas combustion.

[0003] In the prior art, during the use of some plasma ignition burners, if the distance between the air disk and the electrode head cannot be adjusted, it is impossible to adapt to the changes in the wind pressure of different users. This may lead to uneven distribution of plasma, reduced ignition efficiency, and poor stability. It is difficult to meet the requirements of different working conditions, affecting the performance of the equipment, increasing the ignition difficulty and cost, and bringing inconvenience to users. Therefore, a plasma ignition burner for natural gas is proposed to solve the above problems. Summary of the Utility Model

[0004] To make up for the above deficiencies, the utility model provides a plasma ignition burner for natural gas, aiming to improve the problem of the distance between the air disk and the flame nozzle in the prior art.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A plasma ignition burner for natural gas includes a connection disk. A central gas pipe is fixedly connected inside the connection disk. A spiral ring is arranged outside the central gas pipe. A plurality of protective shells are fixedly connected to the bottom of the connection disk. An electrode rod is fixedly connected inside the protective shell. A plasma electrode head is fixedly connected to the bottom of the electrode rod. An adjusting air disk is slidably connected to the outside of the plurality of protective shells. A plurality of connection holes are arranged outside the adjusting air disk. A bolt is threadedly connected to the outside of the central gas pipe. A cushioning piece is fixedly connected to the bottom of the bolt. A flame nozzle is fixedly connected to the bottom of the central gas pipe. A fixing component for installing the flame nozzle is fixedly connected to the outside of the bottom of the central gas pipe. The bolt and the spiral ring are in threaded connection;

[0007] As a further description of the above technical solution:

[0008] The fixing component includes that the front end of a fixing hoop is fixedly connected to the rear end of the central gas pipe. A rotating shaft is rotatably connected to the left side of the fixing hoop. The other side of the rotating shaft is rotatably connected to a rotating hoop. A torsion rod is threadedly connected to the front end of the rotating hoop. A positioning block is fixedly connected to the rear end of the torsion rod;

[0009] As a further description of the above technical solution:

[0010] A screw is threadedly connected to the left side of the rotating hoop, and a gasket is slidably connected to the outside of the screw. The protective shell is made of corundum ceramics;

[0011] As a further description of the above technical solution:

[0012] A positioning bolt is threadedly connected to the outside of the screw, and the outside of the screw is threadedly connected to the inside of the right side of the fixing hoop;

[0013] As a further description of the above technical solution:

[0014] The front end of the gasket is in contact with the rear end of the right side of the fixing hoop, and the rear end of the gasket is in contact with the front end of the positioning bolt;

[0015] As a further description of the above technical solution:

[0016] A fire-resistant sealing ring is fixedly connected to the inner bottom end of the central gas pipe, and the inner top end of the flame nozzle is fixedly connected to the outside of the fire-resistant sealing ring;

[0017] As a further description of the above technical solution:

[0018] A plurality of diffusion holes are formed in the outside of the flame nozzle, and the rear end of the positioning block is in contact with the front end of the top of the flame nozzle;

[0019] As a further description of the above technical solution:

[0020] The front end of the fixing hoop is fixedly connected to the outside of the flame nozzle, and the bottom of the cushioning piece is in contact with the top of the adjusting air disk.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, by transmitting gas into the central gas pipe for transmission, the electrode rod can transmit plasma, and by mixing the gas in the central gas pipe and the plasma of the adjusting air disk, and then rising through the twisting connection hole, the external thread at the air outlet end of the central gas pipe can adjust the distance between the air disk and the electrode head according to the air pressure of each user, ensuring uniform dispersion of the plasma, thus improving the ignition efficiency and stability, meeting the needs of different users, adapting to various working conditions, enhancing the use experience, and making the ignition process more accurate and efficient.

[0023] 2. In the utility model, by fixing the fixing hoop at the connection between the central gas pipe and the flame nozzle, and then adjusting the position by rotating the rotating hoop through the rotating shaft, the pipe for transmitting natural gas is installed and fixed to the burner, which can enhance the connection stability, prevent leakage and ensure safety. At the same time, it is easy to operate and fix the position of the burner. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional schematic diagram of a plasma ignition burner for natural gas proposed by the present utility model;

[0025] Figure 2 A structural schematic diagram of a bolt of a plasma ignition burner for natural gas proposed by the present utility model;

[0026] Figure 3 A structural schematic diagram of a fixing hoop of a plasma ignition burner for natural gas proposed by the present utility model;

[0027] Figure 4 is Figure 3 The enlarged view at position A in

[0028] Legend description:

[0029] 1. Connection plate; 2. Central gas pipe; 3. Spiral ring; 4. Protection shell; 5. Electrode rod; 6. Air regulating disc; 7. Connection hole; 8. Bolt; 9. Pad piece; 10. Plasma electrode head; 11. Fixing hoop; 12. Rotating shaft; 13. Rotating hoop; 14. Diffusion hole; 15. Screw; 16. Gasket; 17. Positioning bolt; 18. Torsion bar; 19. Positioning block; 20. Fire-resistant sealing ring; 21. Flame nozzle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0031] Refer to Figures 1 to 3, An embodiment provided by the present utility model: A plasma ignition burner for natural gas, including a connection disk 1. The connection disk 1 can provide support force for subsequent workpieces and establish a fixed source for other components at the same time. A central gas pipe 2 is fixedly connected inside the connection disk 1, and the gas can be transmitted through the central gas pipe 2. A spiral ring 3 is provided outside the central gas pipe 2, and the spiral ring 3 can enable subsequent workpieces to move on its surface. A plurality of protective shells 4 are fixedly connected to the bottom of the connection disk 1. An electrode rod 5 is fixedly connected inside the protective shell 4. The protective shell 4 can protect the electrode rod 5. At the same time, the insulation of the protective shell 4 uses a corundum ceramic tube. The breakdown voltage of the corundum ceramic tube is not less than 20,000V, and the wall thickness of the insulation tube is greater than 1.5mm. The electrode rod 5 uses a nickel-based alloy. A plasma electrode head 10 is fixedly connected to the bottom of the electrode rod 5. The power supply can be transmitted to the plasma electrode head 10 through the electrode rod 5, achieving the effect of transmitting current. At the same time, the gap of the plasma electrode head 10 is 3 - 4mm, with an interval of 120°. When the discharge surface of the plasma electrode head 10 is a spherical surface or an ellipsoidal surface, the ionization effect and diffusion effect of the plasma are the best;

[0032] An adjusting air disk 6 is slidably connected to the outside of the plurality of protective shells 4. A plurality of connection holes 7 are provided outside the adjusting air disk 6. At the same time, the adjusting air disk 6 can move outside the protective shell 4. The position of the protective shell 4 can be adjusted through these connection holes 7. A bolt 8 is threadedly connected to the outside of the protective shell 4. The bolt 8 and the spiral ring 3 are threadedly connected, and the bolt 8 can move on the spiral ring 3. To ensure the insulation effect between the electrode head 10 and the air disk 6 and prevent short circuits or breakdowns caused by reasons such as carbon accumulation, the surface of the electrode head 10 must be insulated. Except for the plasma arc excitation positions opposite to the annular pieces, the upper and lower surfaces and the inner and outer ring surfaces of the annular pieces are all surface-insulated. The treatment material is 7 parts of polysilazane + 2 parts of sodium metasilicate + 1 part of organic solvent. The treatment process is as follows: The electrode head is heated to 60 degrees, and a polysilazane coating is evenly applied. The coating thickness is controlled within 0.1 - 0.2mm. It is placed above a filter paper and cured at room temperature for 12 - 16 hours, and then heated to 700 degrees in a resistance furnace and kept warm for 2 hours. After the coating is ceramized, it is taken out to ensure that the linear expansion coefficient is 11 - 13 * 10 - 6 / degree;

[0033] To ensure that the air supply of the adjusting air disk 6 can blow the plasma arc, 6 vertical holes with a diameter of 6.2m are evenly arranged along the circumferential direction inside the cyclone groove of the adjusting air disk 6. Among them, three are through holes for the electrode rod 5, and three are discrete holes. The distance between the center position of the holes and the center position of the air disk depends on the diameter of the air disk, ensuring that the distance between the electrode and the extension of the flame nozzle 21 is not less than 6mm;

[0034] The length of the spiral ring 3 is 100 mm, which is convenient for adjusting the distance between the wind disk 6 and the electrode head according to the wind pressure of each user. The bottom of the bolt 8 is fixedly connected with a spacer 9, and the bottom of the spacer 9 is in contact with the top of the adjustable wind disk 6. The spacer 9 can prevent the bolt 8 from shaking, so that the bolt 8 can be stabilized on the top of the adjustable wind disk 6. The bottom of the central air pipe 2 is fixedly connected with a flame nozzle 21, and a plurality of diffusion holes 14 are provided on the outside of the flame nozzle 21. Plasma ignition is used to replace the original spark ignition, and the flame is continuously supplied to the flame nozzle 21. The plasma containing active oxygen and charged particles is transported in the combustion chamber, which greatly shortens the ignition time of natural gas, and at the same time improves its combustion efficiency and heat radiation efficiency to achieve energy saving effect. According to the length of the plasma flame, the position of the plasma electrode head 10 is 3 to 4 mm below the lower edge of the natural gas outlet hood; according to the working frequency and voltage of the plasma, the distance between the electrode head and the central gas pipe 2 and the outer ring sleeve is required to be not less than 6 mm, and the upper and lower 30 mm sections of the relative position of the central gas pipe 2 and the outer ring sleeve corresponding to the plasma electrode head 10 should be simply polished;

[0035] Reference Figure 3 and Figure 4 The bottom outside of the central gas pipe 2 is fixedly connected with a fixing assembly for installing the flamethrower 21, and the fixing assembly includes a front end of a fixing hoop 11 fixedly connected to the rear end of the central gas pipe 2, and the left side of the fixing hoop 11 is rotatably connected with a rotating shaft 12, and the bronze drum fixing hoop 11 can be fixed to the rear end of the central gas pipe 2 as a fixing effect, and the other side of the rotating shaft 12 is rotatably connected with a rotating hoop 13. At the same time, the rotating rotating shaft 12 can adjust the position of the rotating hoop 13, and the front end of the fixing hoop 11 is fixedly connected to the outside of the flamethrower 21. Through such a design, the flamethrower 21 can be subsequently fixed, and the front end of the rotating hoop 13 is threadedly connected with a torsion bar 18, and the rear end of the torsion bar 18 is fixedly connected with a positioning block 19, and the rear end of the positioning block 19 is in contact with the top front end of the flamethrower 21. Through the relationship between the torsion bar 18 and the positioning block 19, the flamethrower 21 can be more firmly installed.

[0036] The left side of the rotating hoop 13 is threadedly connected with a screw 15, and the external thread of the screw 15 is connected with a positioning bolt 17. The external thread of the screw 15 is connected to the right side of the fixing hoop 11. Through such a design, the fixing hoop 11 and the rotating hoop 13 can be fixed to each other. The external sliding connection of the screw 15 is a gasket 16, and the front end of the gasket 16 is in contact with the right rear end of the fixing hoop 11, and the rear end of the gasket 16 is in contact with the front end of the positioning bolt 17. At the same time, through the design of this gasket 16, the connection between the screw 15 and the positioning bolt 17 can be more stable. The internal bottom end of the central air pipe 2 is fixedly connected with a fire-resistant sealing ring 20, and the internal top end of the flamethrower 21 is fixedly connected to the outside of the fire-resistant sealing ring 20. The connection between the flamethrower 21 and the central air pipe 2 can be sealed by the fire-resistant sealing ring 20 to prevent gas leakage.

[0037] Working principle: The gas is transmitted to the inside of the central gas pipe 2, and then the electrode rod 5 can transmit plasma. By mixing the gas inside the central gas pipe 2 with the plasma of the regulating wind disk 6, the fire source can be transmitted. When the two are mixed, they are ejected through the flame nozzle 21. Secondly, the diffusion hole 14 opened on the outside of the flame nozzle 21 can greatly increase the range of the transmitted fire source. Secondly, by twisting the bolt 8 for adjustment, the plasma can be evenly dispersed. Plasma ignition is used to replace the original spark ignition. By continuously delivering plasma containing active oxygen and charged particles into the combustion chamber, the ignition time of natural gas is greatly shortened, and its combustion efficiency and thermal radiation efficiency are improved, thereby achieving energy-saving effects.

[0038] When the contact between the central gas pipe 2 and the flame-spraying nozzle 21 needs to be installed and fixed, firstly, the fixing hoop 11 is fixed at the joint of the central gas pipe 2 and the flame-spraying nozzle 21, and then the rotating hoop 13 can be rotated by the rotating shaft 12 to adjust the position, and then the torsion bar 18 is twisted to push the positioning block 19 to move, when the positioning block 19 can squeeze between the flame-spraying nozzle 21 and the central gas pipe 2, and then the other end of the fixing hoop 11 and the rotating hoop 13 are connected by the screw 15, and the outer sliding of the screw 15 The gasket 16 is then fastened by the positioning bolt 17. This design can prevent the screw 15 from shaking during installation, and at the same time, the fixing hoop 11 and the rotating hoop 13 can achieve the effect of fastening the flamethrower 21 and the central air pipe 2. At the same time, a fire-resistant sealing ring 20 is fixed at the joint of the central air pipe 2 and the flamethrower 21 to prevent accidental gas leakage. Through this design, the flamethrower 21 can be fixed and fixed conveniently, and the flamethrower 21 can be repaired at the same time.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A plasma ignition burner for natural gas, comprising a connecting plate (1), characterized in that: Inside the connecting plate (1), a central air pipe (2) is fixedly connected. A spiral ring (3) is provided on the outside of the central air pipe (2). At the bottom of the connecting plate (1), a plurality of protective shells (4) are fixedly connected. Inside the protective shell (4), an electrode rod (5) is fixedly connected. At the bottom of the electrode rod (5), a plasma electrode head (10) is fixedly connected. The outside of the plurality of protective shells (4) is slidably connected with an adjusting air disc (6). A plurality of connecting holes (7) are provided on the outside of the adjusting air disc (6). The outside of the central air pipe (2) is threadedly connected with a bolt (8). At the bottom of the bolt (8), a cushioning piece (9) is fixedly connected. At the bottom of the central air pipe (2), a flame nozzle (21) is fixedly connected. At the bottom of the central air pipe (2), a fixing component for installing the flame nozzle (21) is fixedly connected. The bolt (8) and the spiral ring (3) are in threaded connection.

2. The plasma ignition burner for natural gas according to claim 1, characterized in that: The fixing component includes that the front end of a fixing hoop (11) is fixedly connected to the rear end of the central air pipe (2). The left side of the fixing hoop (11) is rotatably connected with a rotating shaft (12). The other side of the rotating shaft (12) is rotatably connected with a rotating hoop (13). The front end of the rotating hoop (13) is threadedly connected with a torsion rod (18). The rear end of the torsion rod (18) is fixedly connected with a positioning block (19).

3. The plasma ignition burner for natural gas according to claim 2, characterized in that: The left side of the rotating hoop (13) is threadedly connected with a screw (15). A gasket (16) is slidably connected to the outside of the screw (15). The protective shell (4) is made of corundum ceramics.

4. The plasma ignition burner for natural gas according to claim 3, wherein: The outside of the screw (15) is threadedly connected with a positioning bolt (17). The outside of the screw (15) is threadedly connected inside the right side of the fixing hoop (11).

5. A plasma ignition burner for natural gas according to claim 4, characterized in that: The front end of the gasket (16) is in contact with the rear end of the right side of the fixing hoop (11). The rear end of the gasket (16) is in contact with the front end of the positioning bolt (17).

6. A plasma ignition burner for natural gas according to claim 1, characterized in that: At the inner bottom end of the central air pipe (2), a fire-resistant sealing ring (20) is fixedly connected. The inner top end of the flame nozzle (21) is fixedly connected to the outside of the fire-resistant sealing ring (20).

7. A plasma ignition burner for natural gas according to claim 2, characterized in that: A plurality of diffusion holes (14) are provided on the outside of the flame nozzle (21). The rear end of the positioning block (19) is in contact with the front end of the top of the flame nozzle (21).

8. A plasma ignition burner for natural gas according to claim 7, characterized in that: The front end of the fixing hoop (11) is fixedly connected to the outside of the flame nozzle (21). The bottom of the cushioning piece (9) is in contact with the top of the adjusting air disc (6).

Images