阅读说明：本技术 双气环喷射枪燃烧装置 (Combustion device of double-gas-ring injection gun ) 是由 肖江东 邢永梅 李响 于 2019-09-19 设计创作，主要内容包括：根据本发明的双气环喷射枪燃烧装置,包括进气部和燃烧部,进气部包括壳体、气环件、进气管,进气管的一端与气环件连通,另一端与外部气源连通,燃烧部包括喉口、中心气环式枪体、内圈气环式枪体、外圈气环式枪体、稳焰装置、多个内圈气环连接气管、多个外圈气环连接气管、中心气环连接气管,喉口一端与壳体的一端连通,外圈气环式枪体呈圆环管状,设置有多个外圈喷射孔,中心气环式枪体设置有多个中心喷射孔,稳焰装置设置在中心气环式枪体的外侧,通过连接件与喉口的内壁相连,内圈气环式枪体设置有多个内圈喷射孔,内圈气环连接气管、外圈气环连接气管的一端分别连通气环件的一端,另一端分别连通内圈气环式枪体、外圈气环式枪体。(The double-gas-ring injection gun combustion device comprises a gas inlet part and a combustion part, wherein the gas inlet part comprises a shell, a gas ring part and a gas inlet pipe, one end of the gas inlet pipe is communicated with the gas ring part, the other end of the gas inlet pipe is communicated with an external gas source, the combustion part comprises a throat opening, a central gas ring type gun body, an inner ring gas ring type gun body, an outer ring gas ring type gun body, a flame stabilizing device, a plurality of inner ring gas ring connecting gas pipes, a plurality of outer ring gas ring connecting gas pipes and a central gas ring connecting gas pipe, one end of the throat opening is communicated with one end of the shell, the outer ring gas ring type gun body is in a circular pipe shape and is provided with a plurality of outer ring injection holes, the central gas ring type gun body is provided with a plurality of central injection holes, the flame stabilizing device is arranged on the outer side of the central gas ring type gun body and is connected with the inner wall of the throat opening through a connecting piece, the inner ring gas ring, the other end is respectively communicated with the inner ring air ring type gun body and the outer ring air ring type gun body.)

1. A dual gas ring injection lance combustion apparatus comprising:

an air intake portion; and

a combustion part, one end of which is communicated with the air inlet part,

wherein the air inlet part comprises a shell, an air ring piece and an air inlet pipe,

the shell is cylindrical, two ends of the shell are open,

the gas ring piece is cylindrical and arranged in the shell, the axis of the gas ring piece is collinear with the axis of the shell, the section of the gas ring piece is a circular ring,

one end of the air inlet pipe is communicated with the air ring piece, the other end of the air inlet pipe is communicated with an external air source, the axis of the air inlet pipe is vertical to the axis of the shell,

the combustion section includes: a throat, a central gas ring type gun body, an inner ring gas ring type gun body, an outer ring gas ring type gun body, a flame stabilizing device, a plurality of inner ring gas ring connecting air pipes, a plurality of outer ring gas ring connecting air pipes and a central gas ring connecting air pipe,

the throat opening is in a cylindrical shape with two open ends, one end of the throat opening is communicated with one end of the shell, the other end of the throat opening is a free end,

the outer ring gas ring type gun body is in a circular ring tube shape, is arranged on the outer wall of the throat and is positioned at the free end of the throat, a plurality of outer ring jet holes are arranged on the outer ring gas ring type gun body,

the central gas ring type gun body is arranged at the center of the flame stabilizing device, the axis of the central gas ring type gun body is collinear with the axis of the throat, a plurality of central jet holes are arranged on the central gas ring type gun body,

the flame stabilizing device is arranged at the outer side of the central gas ring type gun body and is connected with the inner wall of the throat opening through a connecting piece,

the inner ring gas ring type gun body is in a circular ring tube shape, is arranged on the outer wall of the flame stabilizing device and is coaxial with the flame stabilizing device, a plurality of inner ring jet holes are arranged on the inner ring gas ring type gun body,

one end of the central gas ring connecting gas pipe is communicated with one end of the gas ring piece, the other end is communicated with the central gas ring type gun body,

one end of the inner ring gas ring connecting gas pipe is communicated with one end of the gas ring piece, the other end is communicated with the inner ring gas ring type gun body,

one end of the outer ring gas ring connecting air pipe is communicated with one end of the gas ring piece, and the other end of the outer ring gas ring connecting air pipe is communicated with the outer ring gas ring type gun body.

2. The dual gas ring injection lance combustion apparatus of claim 1 wherein:

wherein, the distance between the outer ring gas ring type gun body and the end surface of the throat is 15-35 mm.

3. The dual gas ring injection lance combustion apparatus of claim 1 wherein:

the outer ring injection holes are arranged in a multi-row circumferential manner, and the outer ring injection holes in adjacent rows are arranged in a crossed manner at intervals.

4. The dual gas ring injection lance combustion apparatus of claim 1 wherein:

wherein, the diameter of the outer ring injection hole is 2.5-9mm, and the number is 80-120.

5. The dual gas ring injection lance combustion apparatus of claim 1 wherein:

wherein, the distance between the inner ring gas ring type gun body and the end surface of the throat is 50-100 mm.

6. The dual gas ring injection lance combustion apparatus of claim 1 wherein:

wherein, the diameter of the inner ring injection hole is 3-7mm, and the number is 9-27.

7. The dual gas ring injection lance combustion apparatus of claim 1 wherein:

wherein, the included angle between the axis of the central injection hole and the axis of the central gas ring type gun body is 45-65 degrees.

8. The dual gas ring injection lance combustion apparatus of claim 1 wherein:

wherein, the diameter of the central injection hole is 2.5-5mm, and the number is 6-12.

Technical Field

The invention belongs to the field of environmental protection, and particularly relates to a combustion device of a double-gas-ring injection gun.

Background

The burners in the market mostly adopt a gas pipe air gun mode or a premixed low-nitrogen burner, the burners adopting the gas pipe air gun mode basically adopt a multi-gun structural form in order to enable gas to be dispersed more uniformly, and the structural form has the problems of limitation of arrangement space and high production cost; and the low-nitrogen combustor in the premixing structure has certain potential safety hazard.

Disclosure of Invention

In order to solve the problems, the invention provides a combustion device of a double-gas-ring injection gun. The technology of the combustion device of the double-gas-ring injection gun is the most important component in the ultra-low nitrogen combustor, is mainly applied to the ultra-low nitrogen combustor, and belongs to an ultra-low nitrogen emission environment-friendly device.

The invention provides a combustion device of a double-gas-ring injection gun, which is characterized by comprising a gas inlet part and a combustion part, wherein one end of the combustion part is communicated with the gas inlet part, the gas inlet part comprises a shell, a gas ring part and a gas inlet pipe, the shell is cylindrical, two ends of the shell are open, the gas ring part is cylindrical and is arranged in the shell, the axis of the gas ring part is collinear with the axis of the shell, the section of the gas ring part is a circular ring, one end of the gas inlet pipe is communicated with the gas ring part, the other end of the gas inlet pipe is communicated with an external gas source, the axis of the gas inlet pipe is vertical to the: the flame stabilizing device comprises a throat opening, a central air ring type gun body, an inner ring air ring type gun body, an outer ring air ring type gun body, a flame stabilizing device, a plurality of inner ring air ring connecting air pipes, a plurality of outer ring air ring connecting air pipes and a central air ring connecting air pipe, wherein the throat opening is in a cylindrical shape with two open ends, one end of the throat opening is communicated with one end of a shell, the other end of the throat opening is a free end, the outer ring air ring type gun body is in a circular tube shape and is arranged on the outer wall of the throat opening and is positioned at the free end of the throat opening, a plurality of outer ring jet holes are arranged on the outer ring air ring type gun body, the central air ring type gun body is arranged in the center of the flame stabilizing device, the axis of the central air ring type gun body is collinear with the axis of the throat opening, a plurality of central jet holes are arranged on the central air ring type gun body, the flame stabilizing device is arranged on the outer side of the central, the flame stabilizing device is coaxially arranged, a plurality of inner ring jet holes are formed in the inner ring gas ring type gun body, the central gas ring is connected with one end of the gas pipe and one end of the ventilation ring piece, the other end of the central gas ring is communicated with the central gas ring type gun body, one end of the inner ring gas ring is connected with one end of the gas pipe and one end of the ventilation ring piece, the other end of the inner ring gas ring is communicated with the inner ring gas ring type gun body, one end of the outer ring gas ring is connected with one end of the ventilation ring piece.

The combustion device of the double-gas-ring injection gun provided by the invention can also have the following characteristics: wherein, the distance between the outer ring gas ring type gun body and the end surface of the throat opening is 15-35 mm.

In addition, the dual-gas-ring injection gun combustion apparatus provided by the present invention may further include: the plurality of outer ring injection holes are arranged in a multi-row circumference mode, and the outer ring injection holes in adjacent rows are arranged in a crossed mode at intervals.

In addition, the dual-gas-ring injection gun combustion apparatus provided by the present invention may further include: wherein, the diameter of the jet holes of the outer ring is 2.5-9mm, and the number of the jet holes is 80-120.

In addition, the dual-gas-ring injection gun combustion apparatus provided by the present invention may further include: wherein, the distance between the inner ring gas ring type gun body and the end surface of the throat opening is 50-100 mm.

In addition, the dual-gas-ring injection gun combustion apparatus provided by the present invention may further include: wherein, the diameter of the injection holes of the inner ring is 3-7mm, and the number of the injection holes is 9-27.

In addition, the dual-gas-ring injection gun combustion apparatus provided by the present invention may further include: wherein, the included angle between the axis of the central injection hole and the axis of the central gas ring type gun body is 45-65 degrees.

In addition, the dual-gas-ring injection gun combustion apparatus provided by the present invention may further include: wherein, the diameter of the central injection hole is 2.5-5mm, and the number is 6-12.

Action and Effect of the invention

According to the double-gas-ring injection gun combustion device, the plurality of ring-shaped injection gun bodies are arranged in a layered and segmented mode, and the front position and the rear position of the ring-shaped injection gun bodies are different, so that the double-gas-ring injection gun combustion device has the advantages that the gas quantity ratio and the combustion-supporting air quantity ratio are changed, and the problem that the temperature of the flame root is overhigh is solved.

In addition, the annular injection gun head in the double-gas-ring injection gun combustion device is uniformly provided with a plurality of gas injection holes, so that the distribution of dispersed gas is realized, the distribution of each local gas quantity and the optimal mixing of the gas and combustion air are ensured, and the emission of nitrogen oxides is reduced.

Further, a plurality of gas jet holes equipartition distribute around the burning larynx mouth to the gas jet hole has different angles, makes the more even of combustion gas dispersion, has solved the uneven problem of gas distribution, guarantees the best mixture of gas and combustion air, reduces nitrogen oxide's emission.

Furthermore, the double-gas-ring injection gun gas device solves the problems of limited space arrangement and high production cost of the gas pipe gas gun structure burner, and the air-fuel ratio of the arrangement form of the double-gas-ring injection gun gas device is more uniform than that of the multi-gun arrangement of the low-nitrogen burner in the gas pipe gas gun structure form; meanwhile, the problem of potential safety hazard of the premixing type low-nitrogen combustor is solved.

Drawings

FIG. 1 is a schematic perspective view of a dual gas ring injection lance combustion apparatus in an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of FIG. 1;

FIG. 3 is a schematic front view of an inner ring gas ring type gun body and flame holder according to an embodiment of the invention;

FIG. 4 is a schematic cross-sectional view of FIG. 3;

FIG. 5 is a perspective view of a central gas ring gun body in accordance with an embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of FIG. 5;

FIG. 7 is a schematic front view of an outer ring gas ring gun body according to an embodiment of the invention;

FIG. 8 is a schematic sectional view A-A of FIG. 7;

fig. 9 is a schematic sectional view B-B of fig. 7.

Detailed Description

In order to make the technical means, the original features, the achieved objects and the effects of the present invention easily understood, the following embodiments are specifically described with reference to the accompanying drawings.