Double-swirl gas burner with high calorific value adaptability

Abstract

The invention relates to a double-rotational-flow gas burner, in particular to a double-rotational-flow gas burner with high calorific value adaptability, and aims to solve the problems that a traditional double-rotational-flow gas burner cannot maintain the stable flow speed of gas and combustion-supporting air at a nozzle of the gas burner, cannot maintain the stable flame and cannot adapt to the great change of the calorific value of the gas. The center air cylinder, the standby gas cylinder, the gas cylinder, the standby combustion-supporting air cylinder and the combustion-supporting air cylinder are sequentially arranged from inside to outside, the standby gas adjustable guide vane is arranged between the center air cylinder and the standby gas cylinder, and the gas fixed guide vane is arranged between the standby gas cylinder and the gas cylinder. The combustion-supporting air fixed guide vane is arranged between the gas cylinder and the standby combustion-supporting air cylinder, the standby combustion-supporting air fixed guide vane is arranged between the standby combustion-supporting air cylinder and the combustion-supporting air cylinder, and the standby gas adjustable guide vane realizes blade angle adjustment between the central air cylinder and the standby gas cylinder. The burner is applied to the field of burners.

Description

Technical Field

[0001] The invention relates to a double swirl gas burner, in particular to a double swirl gas burner with strong calorific value adaptability. The invention is applied to the field of burners. Background Art

[0002] When burning low-calorific value by-product gases from the metallurgical industry (blast furnace gas, converter gas, coke oven gas, etc.), double swirl gas burners are generally used. They are generally cylindrical, with the central air tube, gas tube, and combustion-supporting air tube from the inside to the outside. There are no guide vanes in the central air tube, and the central wind is direct wind; fixed gas guide vanes are set between the central air tube and the gas tube, and the gas leaves the burner nozzle in a swirl manner; fixed air guide vanes are set between the gas tube and the combustion-supporting air tube, and the combustion-supporting wind is swirl wind. Since the theoretical air volume for combustion of gases with different calorific values ​​varies greatly, the gas volume flow rate of gas burners with different calorific values ​​of the same power will also differ by several times. The low calorific value gas has a large volume flow rate and a small combustion-supporting air volume, while the high calorific value gas has a small volume flow rate and a large combustion-supporting air volume. In existing gas burners, each layer of air ducts and guide vanes are fixedly welded, and the flow area of ​​gas and combustion-supporting air is fixed. When burning gas with lower calorific value, the gas velocity will increase and the combustion-supporting air velocity will decrease; when burning gas with higher calorific value, the gas velocity will decrease and the combustion-supporting air velocity will increase. Traditional double-swirl gas burners cannot maintain stable gas and combustion-supporting air velocity at the gas burner nozzle, cannot maintain flame stability, and cannot adapt to large changes in gas calorific value. Summary of the invention

[0003] The purpose of the present invention is to solve the problems that traditional double-swirl gas burners cannot maintain stable gas and combustion-supporting air flow rates at the gas burner nozzle, cannot maintain flame stability, and cannot adapt to large changes in the calorific value of the gas, and thus provide a double-swirl gas burner with strong calorific value adaptability.

[0004] The technical solution adopted by the present invention to solve the above problems is:

[0005] A double swirl gas burner with strong calorific value adaptability, comprising a central air cylinder, a gas cylinder, a combustion-supporting air cylinder, a spare gas cylinder, a spare combustion-supporting air cylinder, a gas fixed guide vane, a combustion-supporting air fixed guide vane, a spare gas adjustable guide vane and a spare combustion-supporting air fixed guide vane;

[0006] The central air duct, spare gas cylinder, gas cylinder, spare combustion-supporting air duct and combustion-supporting air duct are arranged in sequence from the inside to the outside, the spare gas adjustable guide vane is arranged between the central air duct and the spare gas cylinder, the gas fixed guide vane is arranged between the spare gas cylinder and the gas cylinder, the combustion-supporting air fixed guide vane is arranged between the gas cylinder and the spare combustion-supporting air duct, the spare combustion-supporting air fixed guide vane is arranged between the spare combustion-supporting air duct and the combustion-supporting air duct, and the spare gas adjustable guide vane realizes blade angle adjustment between the central air duct and the spare gas cylinder.

[0007] Furthermore, the combustion-supporting air cylinder is processed along the length direction to have a first combustion-supporting air cylinder, a second combustion-supporting air cylinder and a third combustion-supporting air cylinder;

[0008] The first combustion-supporting air tube, the second combustion-supporting air tube and the third combustion-supporting air tube are connected in sequence along the length direction. The second combustion-supporting air tube is a conical tube. The small end of the second combustion-supporting air tube is connected to one end of the third combustion-supporting air tube, and one end of the first combustion-supporting air tube is connected to the large end of the second combustion-supporting air tube.

[0009] Furthermore, it also includes a spare combustion-supporting air volume adjustment mechanism, which includes a conical cylinder, a cylinder, at least two pull rods and a plurality of pulleys;

[0010] The small end of the conical cylinder is fixedly connected to one end of the cylinder, a plurality of pulleys are radially mounted on the side wall of the cylinder, one end of the pull rod is fixedly connected to the large end of the conical cylinder and the other end of the cylinder.

[0011] The conical cylinder and the round cylinder are arranged between the spare combustion-supporting air cylinder and the combustion-supporting air cylinder, and the round cylinder is slidingly arranged on the outer side wall of the spare combustion-supporting air cylinder through a plurality of pulleys, and the conical surface of the conical cylinder is matched with the conical surface of the second combustion-supporting air cylinder.

[0012] Furthermore, it also includes a standby gas adjustable guide vane adjustment mechanism, which includes a rotating rod, a slide plate, a plurality of blade shafts and a plurality of driving rods;

[0013] The standby gas adjustable guide vane includes a plurality of adjustable blades, each of which is provided with a blade shaft, and the plurality of adjustable blades are radially provided between the central wind tube and the standby gas cylinder, and each adjustable blade is rotatably connected to the central wind tube and the standby gas cylinder via the blade shaft, and each blade shaft is connected to a driving rod, which drives the blade shaft to rotate, and one end of the rotating rod is fixedly connected to the slide groove plate, and the slide groove plate is cooperated with the plurality of driving rods, and the rotating rod is provided in the central wind tube.

[0014] Further, the chute plate includes a central plate, a plurality of support rods and a plurality of waist-shaped rings;

[0015] A plurality of support rods are evenly distributed radially on the central disk, and a waist-shaped ring is fixedly installed on the outer end of each support rod, and a driving rod is inserted in each waist-shaped ring.

[0016] Furthermore, the waist-shaped hole of each waist-shaped ring on the slide plate is arranged outside the central air cylinder.

[0017] Furthermore, the center line of the central air cylinder, the center line of the backup gas cylinder, the center line of the gas cylinder, the center line of the backup combustion-supporting air cylinder and the center line of the combustion-supporting air cylinder are arranged to overlap.

[0018] Furthermore, the fixed gas guide vanes, the fixed combustion-supporting air guide vanes, the spare gas adjustable guide vanes and the spare combustion-supporting air fixed guide vanes are all arranged close to the outlet end of the central air duct.

[0019] Furthermore, a baffle ring is provided at the inlet end of the spare combustion-supporting air cylinder, and the baffle ring is installed on the outer side wall of the spare combustion-supporting air cylinder.

[0020] Furthermore, the taper of the conical cylinder is the same as the taper of the second combustion-supporting air cylinder.

[0021] Beneficial effects of the present invention:

[0022] 1. The present invention is based on the characteristics that low calorific value gas has a large volume flow rate and a small combustion-supporting air volume, and high calorific value gas has a small volume flow rate and a large combustion-supporting air volume. By adjusting the gas flow rate in the standby gas circulation area of ​​the burner and the combustion-supporting air flow rate in the standby combustion-supporting air circulation area, when the calorific value of the gas changes significantly, the gas and combustion-supporting air flow rates at the burner nozzle are ensured to change slightly, the gas flame is maintained stable, and the adaptability of the burner to changes in the calorific value of the gas is enhanced.

[0023] 2. The present invention adopts a burner that can adapt to multiple calorific value gases at the same time, reducing the types and number of boiler burners, reducing the number of water-cooled wall openings, reducing the boiler air leakage rate, and reducing the complexity of the boiler system.

[0024] 3. This application aims at the fact that there are many types of metallurgical waste gas and the proportion of blending varies greatly. The cost of setting up burners and gas transportation systems separately is extremely high. By adopting this high calorific value-adaptive double swirl burner, various gases can be mixed at the mother pipe, greatly reducing the investment cost.

[0025] 4. This application retains the basic structure of the double swirl gas burner, only increasing the spare circulation area of ​​gas and combustion-supporting air, retaining its characteristics of simple structure, low resistance, strong adaptability to gas fluctuations, not easy to block, and strong ignition stability. This application is equipped with two adjustment mechanisms, which are simple to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is an overall schematic diagram of the double swirl gas burner with high calorific value adaptability of the present invention.

[0027] Figure 2It is a schematic diagram of the adjustment state of the double swirl gas burner with strong calorific value adaptability of the present invention when burning low calorific value gas.

[0028] Figure 3 It is a schematic diagram of the adjustment state of the double swirl gas burner with strong calorific value adaptability of the present invention when burning high calorific value gas.

[0029] Figure 4 For the present invention Figure 2 Schematic diagram of the blade opening in the middle standby gas circulation area.

[0030] Figure 5 for Figure 4 A-axis view and BB section view.

[0031] Figure 6 for Figure 5 Middle BB section view.

[0032] Figure 7 for Figure 3 Schematic diagram of blade closure in the middle standby gas circulation area.

[0033] Figure 8 for Figure 7 Center C view.

[0034] Fig. 9 Bit Figure 8 Middle DD section view.

[0035] Fig.10 for Figure 2 Schematic diagram of closing the baffle in the middle standby combustion air circulation area.

[0036] Fig.11 for Figure 3 Schematic diagram of the opening of the baffle in the middle standby combustion air circulation area.

[0037] Fig.12 It is a schematic diagram of the chute plate 15. DETAILED DESCRIPTION

[0038] Specific implementation method 1: Combination Figure 1-Figure 12 The present embodiment is described as a strong calorific value adaptable double swirl gas burner, which comprises a central air cylinder 1, a gas cylinder 2, a combustion-supporting air cylinder 3, a spare gas cylinder 4, a spare combustion-supporting air cylinder 5, a gas fixed guide vane 6, a combustion-supporting air fixed guide vane 7, a spare gas adjustable guide vane 8 and a spare combustion-supporting air fixed guide vane 9;

[0039] The central air duct 1, the spare gas cylinder 4, the gas cylinder 2, the spare combustion-supporting air duct 5 and the combustion-supporting air duct 3 are arranged in sequence from the inside to the outside, the spare gas adjustable guide vane 8 is arranged between the central air duct 1 and the spare gas cylinder 4, the gas fixed guide vane 6 is arranged between the spare gas cylinder 4 and the gas cylinder 2, the combustion-supporting air fixed guide vane 7 is arranged between the gas cylinder 2 and the spare combustion-supporting air duct 5, the spare combustion-supporting air fixed guide vane 9 is arranged between the spare combustion-supporting air duct 5 and the combustion-supporting air duct 3, and the spare gas adjustable guide vane 8 realizes blade angle adjustment between the central air duct 1 and the spare gas cylinder 4.

[0040] In this embodiment, a standby gas cylinder 4 with a standby gas adjustable guide vane 8 is arranged between the front end outer side of the central air cylinder 1 and the gas cylinder 2 to form a standby gas flow area. The standby gas flow area changes the gas flow in the standby gas flow area by changing the adjustable angle of the standby gas adjustable guide vane 8.

[0041] In this embodiment, a spare combustion-supporting air duct 5 with a spare combustion-supporting air fixed guide vane 9 is arranged on the inner side of the combustion-supporting air duct 3 to form a spare combustion-supporting air circulation area. A spare combustion-supporting air volume adjustment mechanism 11 is arranged at the mouth of the spare combustion-supporting air duct 5. The spare combustion-supporting air volume can be adjusted within a certain range through the spare combustion-supporting air volume adjustment mechanism 11.

[0042] Specific implementation method 2: Combination Figure 1-Figure 3 This embodiment is described. In this embodiment, a strong calorific value adaptable double swirl gas burner is described. The combustion-supporting air cylinder 3 is processed along the length direction with a first combustion-supporting air cylinder, a second combustion-supporting air cylinder and a third combustion-supporting air cylinder;

[0043] The first combustion-supporting air tube, the second combustion-supporting air tube and the third combustion-supporting air tube are connected in sequence along the length direction, the second combustion-supporting air tube is a conical tube, the small end of the second combustion-supporting air tube is connected to one end of the third combustion-supporting air tube, and one end of the first combustion-supporting air tube is connected to the large end of the second combustion-supporting air tube. Other methods are the same as the first embodiment.

[0044] Specific implementation method three: Combination Figure 1 , Figure 2 and Fig.11 The embodiment of the present invention is described as a double swirl gas burner with strong calorific value adaptability, which also includes a spare combustion-supporting air volume adjustment mechanism 11, and the spare combustion-supporting air volume adjustment mechanism 11 includes a conical cylinder 17, a cylinder 18, at least two pull rods 16 and a plurality of pulleys 19;

[0045] The small end of the conical cylinder 17 is fixedly connected to one end of the cylinder 18, a plurality of pulleys 19 are radially mounted on the side wall of the cylinder 18, one end of the pull rod 16 is fixedly connected to the large end of the conical cylinder 17 and the other end of the cylinder 18,

[0046] The conical cylinder 17 and the cylinder 18 are arranged between the spare combustion-supporting air cylinder 5 and the combustion-supporting air cylinder 3, and the cylinder 18 is slidably arranged on the outer wall of the spare combustion-supporting air cylinder 5 through a plurality of pulleys 19, and the conical surface of the conical cylinder 17 is arranged in coordination with the conical surface of the second combustion-supporting air cylinder. The other methods are the same as those in the second specific embodiment.

[0047] When the calorific value of the gas introduced into the burner changes, the present invention rotates the standby combustion-supporting air volume adjustment mechanism 11 to change the blade angle, thereby changing the gas flow in the standby gas circulation area, ensuring a small change in the gas flow rate at the burner nozzle.

[0048] Specific implementation method four: Combination Figure 1 , Figure 2 and Figure 7 The embodiment of the present invention is described as a double swirl gas burner with strong calorific value adaptability, which also includes a spare gas adjustable guide vane adjustment mechanism 10, and the spare gas adjustable guide vane adjustment mechanism 10 includes a rotating rod 12, a chute plate 15, a plurality of blade shafts 13 and a plurality of driving rods 14;

[0049] The standby gas adjustable guide vane 8 includes a plurality of adjustable vanes, each of which is provided with a vane shaft 13, and the plurality of adjustable vanes are radially provided between the central wind tube 1 and the standby gas cylinder 4, and each adjustable vane is rotatably connected and provided on the central wind tube 1 and the standby gas cylinder 4 via the vane shaft 13, each vane shaft 13 is connected to a driving rod 14, the driving rod 14 drives the vane shaft 13 to rotate, one end of the rotating rod 12 is fixedly connected to the chute plate 15, the chute plate 15 is provided in cooperation with the plurality of driving rods 14, and the rotating rod 12 is provided in the central wind tube 1. Other methods are the same as those in the first specific implementation mode.

[0050] In this embodiment, to prevent gas leakage, the standby gas adjustable guide vane adjustment mechanism 10 is inserted into the burner from the central air tube 1. Pulling the standby gas adjustable guide vane adjustment mechanism 10 changes the distance between the conical baffle and the combustion-supporting air tube, thereby changing the combustion-supporting air flow rate in the standby combustion-supporting air circulation area, ensuring that the combustion-supporting air flow rate at the burner nozzle changes slightly. The gas and combustion-supporting air flow rates are stable, maintaining the stability of the gas flame, thereby enhancing the adaptability of the burner to changes in the calorific value of the gas.

[0051] Specific implementation method five: Combination Figure 1 , Figure 2 , Figure 5 , Figure 8 and Fig.12 This embodiment is described. In this embodiment, a double swirl gas burner with strong calorific value adaptability is described. The chute plate 15 includes a central plate, a plurality of support rods and a plurality of waist-shaped rings.

[0052] A plurality of support rods are evenly distributed radially on the central disk, and a waist-shaped ring is fixedly installed at the outer end of each support rod, and a driving rod 14 is inserted in each waist-shaped ring.

[0053] The rotating rod 12 drives the chute plate 15 to rotate, and the chute plate 15 drives the driving rod 14 to rotate around the blade shaft 13, and the blade shaft 13 drives the standby gas adjustable guide blade 8 to adjust the angle between the central air cylinder 1 and the standby gas cylinder 4, thereby changing the gas flow in the standby gas circulation area. Other methods are the same as those in the fourth embodiment.

[0054] Specific implementation method six: Combination Fig.12 This embodiment describes a double swirl gas burner with strong calorific value adaptability, in which the waist-shaped holes of each waist-shaped ring on the chute plate 15 are located outside the central air tube 1. Other methods are the same as those in the fifth embodiment.

[0055] Specific implementation method seven: Combination Figure 1-Figure 3 This embodiment is described. In this embodiment, a strong calorific value adaptable double swirl gas burner is described. The center line of the central air cylinder 1, the center line of the spare gas cylinder 4, the center line of the gas cylinder 2, the center line of the spare combustion air cylinder 5 and the center line of the combustion air cylinder 3 are arranged to coincide. Other methods are the same as those in the first embodiment.

[0056] Specific implementation method eight: Combination Figure 1-Figure 3 This embodiment describes a strong calorific value adaptive double swirl gas burner, wherein the gas fixed guide vane 6, the combustion-supporting air fixed guide vane 7, the spare gas adjustable guide vane 8 and the spare combustion-supporting air fixed guide vane 9 are all arranged near the outlet end of the central air duct 1. Other methods are the same as those in the first embodiment.

[0057] Specific implementation method nine: Combination Figure 1-Figure 3 To explain this embodiment, the embodiment described is a double swirl gas burner with high calorific value adaptability, wherein a baffle ring is provided at the inlet end of the spare combustion-supporting air cylinder 5 , and the baffle ring is installed on the outer side wall of the spare combustion-supporting air cylinder 5 .

[0058] The cylinder 18 is blocked by the retaining ring and the cylinder 18 is limited in the axial direction. Other methods are the same as those in the first embodiment.

[0059] Specific implementation method ten: Combination Figure 1-Figure 3 , Fig.10 and Fig.11 The present embodiment is described as a double swirl gas burner with strong calorific value adaptability, wherein the taper of the conical tube 17 is the same as the taper of the second combustion-supporting air tube.

[0060] The backup combustion-supporting air cylinder 5 and the combustion-supporting air cylinder 3 are blocked by the conical surface of the conical cylinder 17 and the second combustion-supporting air cylinder. Other methods are the same as those in the first specific embodiment.

[0061] The present application sets a spare gas cylinder 4 between the front end outer side of the central air cylinder 1 and the gas cylinder 2 to form a spare gas circulation area, and the gas flow in the gas circulation area can be adjusted within a certain range through the opening angle of the spare gas adjustable guide vane 8; a spare combustion-supporting air cylinder 5 is set inside the combustion-supporting air cylinder 3 to form a spare combustion-supporting air circulation area, and a spare combustion-supporting air volume adjustment mechanism 11 is set at the inlet end, and the spare combustion-supporting air volume adjustment mechanism 11 is adjusted within a certain range. In this way, when the calorific value of the gas changes significantly, the gas and combustion-supporting air flow rates at the burner nozzle can be guaranteed to change slightly, and the gas flame can be maintained stable, thereby enhancing the adaptability of the burner to changes in the calorific value of the gas.

[0062] The above-mentioned specific implementation can be partially adjusted in different ways by those skilled in the art without departing from the principle and purpose of the present invention. The protection scope of the present invention shall be based on the claims and shall not be limited by the above-mentioned specific implementation. Each implementation scheme within its scope shall be subject to the constraints of the present invention.

Claims

1. A double swirl gas burner with strong calorific value adaptability, characterized by: It comprises a central air cylinder (1), a fuel gas cylinder (2), a combustion-supporting air cylinder (3), a spare fuel gas cylinder (4), a spare combustion-supporting air cylinder (5), a fixed fuel gas guide vane (6), a fixed combustion-supporting air guide vane (7), a spare fuel gas adjustable guide vane (8) and a spare combustion-supporting air fixed guide vane (9); The central air duct (1), the spare gas cylinder (4), the gas cylinder (2), the spare combustion-supporting air duct (5) and the combustion-supporting air duct (3) are arranged in sequence from the inside to the outside; the spare gas adjustable guide vane (8) is arranged between the central air duct (1) and the spare gas cylinder (4); the gas fixed guide vane (6) is arranged between the spare gas cylinder (4) and the gas cylinder (2); the combustion-supporting air fixed guide vane (7) is arranged between the gas cylinder (2) and the spare combustion-supporting air duct (5); the spare combustion-supporting air fixed guide vane (9) is arranged between the spare combustion-supporting air duct (5) and the combustion-supporting air duct (3); and the spare gas adjustable guide vane (8) is arranged between the central air duct (1) and the spare gas cylinder (4) to adjust the blade angle.

2. A double swirl gas burner with high calorific value adaptability according to claim 1, characterized in that: The combustion-supporting air cylinder (3) is processed along the length direction to include a first combustion-supporting air cylinder, a second combustion-supporting air cylinder and a third combustion-supporting air cylinder; The first combustion-supporting air tube, the second combustion-supporting air tube and the third combustion-supporting air tube are connected in sequence along the length direction. The second combustion-supporting air tube is a conical tube. The small end of the second combustion-supporting air tube is connected to one end of the third combustion-supporting air tube, and one end of the first combustion-supporting air tube is connected to the large end of the second combustion-supporting air tube.

3. A double swirl gas burner with high calorific value adaptability according to claim 2, characterized in that: It also includes a spare combustion-supporting air volume adjustment mechanism (11), which includes a conical cylinder (17), a cylinder (18), at least two pull rods (16) and a plurality of pulleys (19); The small end of the conical cylinder (17) is fixedly connected to one end of the cylinder (18), a plurality of pulleys (19) are radially mounted on the side wall of the cylinder (18), one end of the pull rod (16) is fixedly connected to the large end of the conical cylinder (17) and the other end of the cylinder (18), The conical cylinder (17) and the round cylinder (18) are arranged between the spare combustion-supporting air cylinder (5) and the combustion-supporting air cylinder (3), and the round cylinder (18) is slidably arranged on the outer wall of the spare combustion-supporting air cylinder (5) via a plurality of pulleys (19), and the conical surface of the conical cylinder (17) is arranged in coordination with the conical surface of the second combustion-supporting air cylinder.

4. The double swirl gas burner with high calorific value adaptability according to claim 1, characterized in that: It also includes a standby gas adjustable guide vane adjustment mechanism (10), which includes a rotating rod (12), a chute plate (15), a plurality of blade shafts (13) and a plurality of driving rods (14); The standby gas adjustable guide blade (8) comprises a plurality of adjustable blades, each of which is provided with a blade shaft (13). The plurality of adjustable blades are radially provided between a central wind tube (1) and a standby gas cylinder (4), and each adjustable blade is rotatably connected to the central wind tube (1) and the standby gas cylinder (4) via the blade shaft (13). Each blade shaft (13) is connected to a driving rod (14), and the driving rod (14) drives the blade shaft (13) to rotate. One end of the rotating rod (12) is fixedly connected to a chute plate (15), and the chute plate (15) is provided in cooperation with the plurality of driving rods (14). The rotating rod (12) is provided in the central wind tube (1).

5. A double swirl gas burner with high calorific value adaptability according to claim 4, characterized in that: The chute plate (15) comprises a central plate, a plurality of support rods and a plurality of waist-shaped rings; A plurality of support rods are evenly distributed radially on the central disk, and a waist-shaped ring is fixedly installed on the outer end of each support rod, and a driving rod (14) is inserted in each waist-shaped ring.

6. A double swirl gas burner with high calorific value adaptability according to claim 5, characterized in that: The waist-shaped hole of each waist-shaped ring on the chute plate (15) is arranged outside the central air cylinder (1).

7. The double swirl gas burner with high calorific value adaptability according to claim 1, characterized in that: The center line of the central air cylinder (1), the center line of the spare gas cylinder (4), the center line of the gas cylinder (2), the center line of the spare combustion-supporting air cylinder (5) and the center line of the combustion-supporting air cylinder (3) are arranged to overlap.

8. The double swirl gas burner with high calorific value adaptability according to claim 1, characterized in that: The gas fixed guide vane (6), the combustion-supporting air fixed guide vane (7), the spare gas adjustable guide vane (8) and the spare combustion-supporting air fixed guide vane (9) are all arranged near the outlet end of the central air duct (1).

9. The double swirl gas burner with high calorific value adaptability according to claim 1, characterized in that: The inlet end of the spare combustion-supporting air cylinder (5) is provided with a baffle ring, which is mounted on the outer side wall of the spare combustion-supporting air cylinder (5).

10. The double swirl gas burner with high calorific value adaptability according to claim 1, characterized in that: The taper of the conical cylinder (17) is the same as the taper of the second combustion-supporting air cylinder.

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