CN219414757U - Burner for unstable air source of single-well heating furnace - Google Patents

Abstract

The utility model relates to the technical field of burners, and discloses a burner for an unstable air source of a single-well heating furnace, which comprises an air guide cylinder, a gas inlet pipe, a gas guide main pipe and a fire gathering cover, wherein the air guide cylinder is connected with the fire gathering cover; the gas inlet pipe is connected with the gas diversion main pipe; the gas diversion main pipe is arranged in the air guide cylinder and the fire gathering cover, and a plurality of gas cyclone branch pipes are uniformly distributed on the circumference of one end of the gas diversion main pipe, which is far away from the gas inlet pipe; the top of the gas cyclone branch pipe is provided with a gas cyclone spray hole; a plurality of peripheral branch pipes are uniformly distributed on the gas diversion main pipe at positions close to the gas cyclone branch pipes in a circumferential manner; the top of the peripheral branch pipe is provided with a gas peripheral spray hole. The utility model applies the staged combustion technology and the strong swirl flame stabilizing technology to the burner technology, and solves the problems of unstable combustion and the like caused by unstable gas components of the gas burner of the single-well heating furnace.

Description

Burner for unstable air source of single-well heating furnace

Technical Field

The utility model belongs to the technical field of the combustor, concretely relates to a combustor that is used for unstable air supply of single well heating furnace.

Background

The environmental problems are also more serious with the development of society, and are concerned by domestic and foreign society. In China, the problem of environmental pollution is also increased, the frequency of atmospheric pollution is increased continuously, the national standard of environmental protection is also increased continuously, the original combustion technologies cannot meet the national standard, and the combustion technologies and design level are required to be further improved to control the emission of the burner.

The existing single-well heating furnace burner gas is mostly mixed gas and associated gas, the gas composition is changed, the water content and the impurities are more, and the combustion is unstable, so that flameout and air leakage problems are caused, and the labor cost, the workload and the working difficulty are increased. There is therefore still a need for a more rational staged gas burner to organize combustion and control flame stability. How to design a combustion head which can stably reduce the oxygen concentration and ensure the full combustion and can further reduce the nitrogen oxides at the same time is a problem which needs to be solved before the technical staff.

Disclosure of Invention

The purpose of the utility model is that: the burner for the unstable gas source of the single-well heating furnace is characterized in that a staged combustion technology, a smoke internal circulation technology and a strong rotational flow flame stabilizing technology are applied to a forced air blasting burner technology, and the problems that combustion is unstable and the like caused by unstable gas components of the gas burner of the single-well heating furnace are solved. In order to achieve the technical purpose, the technical scheme adopted by the novel device is as follows:

a burner for an unstable air source of a single-well heating furnace comprises an air guide cylinder, a fuel gas inlet pipe, a fuel gas guide main pipe and a fire gathering cover;

the air guide cylinder is connected with the fire gathering cover; the gas inlet pipe is connected with the gas diversion main pipe; the gas diversion main pipe is arranged in the air guide cylinder and the fire gathering cover, and a plurality of gas cyclone branch pipes are uniformly distributed on the circumference of one end of the gas diversion main pipe, which is far away from the gas inlet pipe; the top of the gas cyclone branch pipe is provided with a gas cyclone spray hole; a plurality of peripheral branch pipes are uniformly distributed on the gas diversion main pipe at positions close to the gas cyclone branch pipes in a circumferential manner; the top of the peripheral branch pipe is provided with a gas peripheral spray hole.

Further, one end of the fuel gas diversion main pipe, which is far away from the fuel gas inlet pipe, is also provided with a flame stabilizing disc; a plurality of flame stabilizing disc air holes are uniformly distributed on the flame stabilizing disc along the radial direction; the flame stabilizing disc air holes penetrate through the flame stabilizing disc.

Further, one end of the fire gathering cover far away from the air guide cylinder is provided with a fire gathering cover contraction section; the fire gathering cover contraction section is in a contraction shape, and the aperture of one end of the fire gathering cover contraction section, which is close to the fire gathering cover, is larger than the aperture of one end of the fire gathering cover contraction section, which is far away from the fire gathering cover.

Further, two supporting pulley blocks forming an included angle of 90 degrees are arranged between the gas diversion main pipe and the fire gathering cover; the supporting pulley block is connected with the fuel gas diversion main pipe; the supporting pulley block is used for supporting the gas inlet pipe.

Further, a mounting flange is arranged at the joint of the air guide cylinder and the fire gathering cover; a plurality of screw holes are uniformly distributed on the circumference of the mounting flange.

Further, the number of the gas cyclone branch pipes is 3-12.

Further, the number of the gas peripheral branch pipes is 6-18.

Compared with the prior art, the utility model has the beneficial effects that:

(1) A flame stabilizing disc is arranged to stabilize central flame, so that combustion is more stable;

(2) The shrinkage opening of the fire gathering cover is arranged to enable the gas to curl back the smoke, so that the mixture is more uniform, the combustion temperature is reduced, and the emission of nitrogen oxides is further reduced

(3) The swirl branch pipe nozzle increases the gas swirl, stabilizes flame, makes air and premixed gas mix more evenly, improves combustion efficiency.

Drawings

The utility model can be further illustrated by means of non-limiting examples given in the accompanying drawings;

FIG. 1 is a block diagram of a burner for an unstable gas source for a single well furnace of the present utility model;

FIG. 2 is a top view of a burner for a single well furnace unsteady gas source of the present utility model;

FIG. 3 is a schematic perspective view of a burner for an unstable gas source of a single well furnace according to the present utility model;

FIG. 4 is a right side view of a burner for an unstable gas source for a single well furnace of the present utility model.

The main reference numerals are as follows:

an air passage 1; an air guide cylinder 2; a gas inlet pipe 3; a gas diversion main pipe 4; a mounting flange 5; screw holes 6; a supporting pulley block 7; a gas swirl branch pipe 8; a gas peripheral branch pipe 9; a gas swirl nozzle 10; the peripheral jet holes 11 of the fuel gas; a flame stabilizing tray 12; flame stabilizing tray air holes 13; a fire gathering cover 14; and a fire gathering cover contraction section 15.

Detailed Description

The present utility model will be described in detail below with reference to the drawings and the specific embodiments, wherein like or similar parts are designated by the same reference numerals throughout the drawings or the description, and implementations not shown or described in the drawings are in a form well known to those of ordinary skill in the art. In addition, directional terms such as "upper", "lower", "top", "bottom", "left", "right", "front", "rear", etc. in the embodiments are merely directions with reference to the drawings, and are not intended to limit the scope of the present utility model.

As shown in fig. 1-4, a burner for an unstable gas source of a single-well heating furnace comprises an air guide cylinder 2, a gas inlet pipe 3, a gas guide main pipe 4 and a fire gathering cover 14;

an air channel 1 is formed on the inner side of the air guide cylinder 2 and is used for guiding air to a boiler furnace through the channel through which the air flows; the air guide cylinder 2 is connected with the fire gathering cover 14; the gas inlet pipe 3 is connected with the gas diversion main pipe 4; as a more preferable implementation mode, the aperture of the gas inlet pipe is larger than that of the fire gathering cover, so that the arrangement can improve the air circulation speed and ensure that the air and the gas are mixed more fully; as a more preferable implementation mode, the air guide cylinder 2, the fire gathering cover 14, the gas inlet pipe 3 and the gas guide main pipe 4 are coaxially arranged, so that the mixing degree of the gas and the air is improved, the mixing is more sufficient, and the combustion stability is improved; the gas diversion main pipe 4 is arranged in the air guide cylinder 2 and the fire gathering cover 14, and a plurality of gas cyclone branch pipes 8 are uniformly distributed on the circumference of one end of the gas diversion main pipe 4 far away from the gas inlet pipe 3; the top of the gas cyclone branch pipe 8 is provided with a gas cyclone spray hole 10; a plurality of peripheral branch pipes 9 are uniformly distributed on the gas diversion main pipe 4 at positions close to the gas cyclone branch pipes 8 in a circumferential manner; the top of the peripheral branch pipe 9 is provided with a gas peripheral spray hole 11.

In some embodiments, the end of the gas diversion main pipe 4 far away from the gas inlet pipe 3 is also provided with a flame stabilizing disc 12; a plurality of flame stabilizing disc air holes 13 are uniformly distributed on the flame stabilizing disc 12 along the radial direction; the flame stabilizing disc air holes 13 penetrate through the flame stabilizing disc 12, so that the air speed is stabilized, turbulence is generated, the fuel and the air are fully mixed, and the fuel can be fully combusted stably.

In some embodiments, the end of the fire gathering cover 14 remote from the air guide cylinder 2 is provided with a fire gathering cover contraction section 15; the fire gathering cover contraction section 15 is in a contraction shape, and the aperture of one end of the fire gathering cover contraction section 15 close to the fire gathering cover 14 is larger than the aperture of one end of the fire gathering cover contraction section 15 far away from the fire gathering cover 14; the shrinkage of the shrinkage port causes the reduction of the flow area and the increase of the air flow velocity, so that the air in the fire gathering cover can flow to the boiler furnace independently.

In some embodiments, two supporting pulley blocks 7 forming an included angle of 90 degrees are arranged between the gas diversion main pipe 4 and the fire gathering cover 14; the supporting pulley block 7 is connected with the fuel gas diversion main pipe 4; the supporting pulley block 7 is used for supporting the gas inlet pipe 3, so that the gas inlet pipe is fixed, the gas inlet pipe is prevented from loosening, and the combustion stability is further affected.

In some embodiments, the connection between the air guide cylinder 2 and the fire gathering cover 14 is provided with a mounting flange 5; a plurality of screw holes 6 are uniformly distributed on the circumference of the mounting flange 5; the burner for the unstable gas source of the single-well heating furnace is convenient to install and detach.

In some embodiments, the number of gas swirl tubes 8 is 3-12; the number of the gas peripheral branch pipes 9 is 6-18. The arrangement makes the mixture of the fuel gas and the air more sufficient and uniform, makes the combustion more stable and further reduces the formation of NOx.

When in use, air enters the burner from the air channel 1, flows in the air guide cylinder 2, flows through the flame holding cover 14 and then is divided into two parts at the front end of the flame holding disk 12, and most of the air flows between the flame holding disk 12 and the flame holding cover 14 to form peripheral air; a further small portion of the air flows from the flame holder plate air holes 13 forming a central air.

The fuel gas flows into the fuel gas inlet pipe 3 and then enters the fuel gas diversion main pipe 4, the tail end of the fuel gas diversion main pipe 4 is divided into two parts of fuel gas, and the first part of fuel gas flows through the fuel gas swirl branch pipe 8 and then is sprayed out of the fuel gas swirl spray hole 10 to be mixed with central air to form central swirl flame; the second part flows through the gas peripheral branch pipe 9 and then is sprayed out from the gas peripheral spray holes 11 to be mixed with peripheral air, and the peripheral diffusion flame area is formed by downstream development, wherein the air quantity of the area is relatively large, oxygen-enriched combustion is formed, the redundant peripheral air divides the flame to a certain extent, the classification effect is improved, and the flame temperature and NOx are further reduced.

The mixing effect and shearing effect of each combustion area are generated by the swirling action, and intense substance and heat transfer is carried out, so that stable and efficient combustion areas are formed together.

The burner for the unstable gas source of the single-well heating furnace provided by the utility model is described in detail above. The description of the specific embodiments is only intended to aid in understanding the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims (7)

1. The utility model provides a combustor for unstable air supply of single well heating furnace, includes air guide shell (2), gas intake pipe (3), gas water conservancy diversion are responsible for (4) and are drawn together fire cover (14), its characterized in that:

the air guide cylinder (2) is connected with the fire gathering cover (14); the gas inlet pipe (3) is connected with the gas diversion main pipe (4); the gas diversion main pipe (4) is arranged in the air guide cylinder (2) and the fire gathering cover (14), and a plurality of gas cyclone branch pipes (8) are uniformly distributed on the circumference of one end, far away from the gas inlet pipe (3), of the gas diversion main pipe (4); the top of the gas swirling branch pipe (8) is provided with a gas swirling spray hole (10); a plurality of peripheral branch pipes (9) are uniformly and circumferentially distributed at the position, close to the gas cyclone branch pipe (8), on the gas diversion main pipe (4); the top of the peripheral branch pipe (9) is provided with a fuel gas peripheral spray hole (11).

2. A burner for a single well heating furnace unsteady gas source as recited in claim 1, wherein:

one end of the fuel gas diversion main pipe (4) far away from the fuel gas inlet pipe (3) is also provided with a flame stabilizing disc (12); a plurality of flame stabilizing disc air holes (13) are uniformly distributed on the flame stabilizing disc (12) along the radial direction; the flame stabilizing disc air holes (13) are communicated with the flame stabilizing disc (12).

3. A burner for a single well heating furnace unsteady gas source as recited in claim 2, wherein:

one end of the fire gathering cover (14) far away from the air guide cylinder (2) is provided with a fire gathering cover contraction section (15); the fire gathering cover contraction section (15) is in a contraction shape, and the aperture of one end of the fire gathering cover contraction section (15) close to the fire gathering cover (14) is larger than the aperture of one end of the fire gathering cover contraction section (15) far away from the fire gathering cover (14).

4. A burner for a single well heating furnace unsteady gas source as recited in claim 3, further comprising:

two supporting pulley blocks (7) forming an included angle of 90 degrees are arranged between the gas diversion main pipe (4) and the fire gathering cover (14); the supporting pulley block (7) is connected with the fuel gas diversion main pipe (4); the supporting pulley block (7) is used for supporting the gas inlet pipe (3).

5. A burner for a single well heating furnace unsteady gas source as recited in claim 4, further comprising:

the connecting part of the air guide cylinder (2) and the fire gathering cover (14) is provided with a mounting flange (5); a plurality of screw holes (6) are uniformly distributed on the circumference of the mounting flange (5).

6. A burner for a single well heating furnace unsteady gas source as recited in claim 5, further comprising:

the number of the gas cyclone branch pipes (8) is 3-12.

7. A burner for a single well heating furnace unsteady gas source as recited in claim 6, further comprising:

the number of the gas peripheral branch pipes (9) is 6-18.