阅读说明：本技术 自冷却梁式燃烧器 (Self-cooling beam type burner ) 是由 张惠 赵利红 于 2020-07-24 设计创作，主要内容包括：本发明公开了一种自冷却梁式燃烧器,涉及炉窑附属设备技术领域,包括中空梁体,梁体内部设有风箱,梁体的底部并列设有多个与燃气管连通的喷嘴,燃气管设置于风箱内部,燃气管的进气端延伸至梁体的外部与燃气管路相连；风箱与梁体内壁之间为二次风通道,与风箱连通的助燃风进口、与二次风通道连通的二次风进口分别设置于梁体的侧壁上；喷嘴的四周均设有与风箱及二次风通道连通的助燃风出口及二次风出口。通过风箱内的助燃风,以及风箱与梁体内壁之间二次风通道内流通的二次风,起到冷却降温作用；同时助燃风及二次风经热交换后温度升高,在喷嘴处参与二次燃烧,确保燃气充分燃烧。(The invention discloses a self-cooling beam type burner, which relates to the technical field of furnace kiln auxiliary equipment and comprises a hollow beam body, wherein an air box is arranged in the beam body, a plurality of nozzles communicated with a gas pipe are arranged at the bottom of the beam body in parallel, the gas pipe is arranged in the air box, and the gas inlet end of the gas pipe extends to the outside of the beam body and is connected with the gas pipe; a secondary air channel is arranged between the air box and the inner wall of the beam body, and a combustion-supporting air inlet communicated with the air box and a secondary air inlet communicated with the secondary air channel are respectively arranged on the side wall of the beam body; the periphery of the nozzle is provided with a combustion-supporting air outlet and a secondary air outlet which are communicated with the air box and the secondary air channel. The cooling function is achieved through combustion-supporting air in the air box and secondary air circulating in a secondary air channel between the air box and the inner wall of the beam body; meanwhile, the temperature of the combustion-supporting air and the secondary air is increased after heat exchange, and the secondary combustion is participated in at the nozzle, so that the full combustion of the fuel gas is ensured.)

1. A self-cooling beam type burner characterized in that: the fuel gas pipe is arranged in the air box, and the air inlet end of the fuel gas pipe extends to the outside of the beam body; a secondary air channel is arranged between the air box and the inner wall of the beam body, and a combustion-supporting air inlet communicated with the air box and a secondary air inlet communicated with the secondary air channel are respectively arranged on the side wall of the beam body; and combustion-supporting air outlets and secondary air outlets communicated with the air box and the secondary air channel are formed in the periphery of the nozzle.

2. The self-cooling girder burner as claimed in claim 1, wherein: the air box is a cuboid hollow box body, two ends of the air box are provided with baffle plates, a combustion-supporting air buffer bin is formed between the baffle plates and two end plates of the beam body, and the combustion-supporting air inlet is formed in the side wall of the beam body corresponding to the combustion-supporting air buffer bin; a combustion-supporting air channel is arranged between the baffle and the side wall of the beam body and is used for communicating the combustion-supporting air buffer bin with the air box; ribbed plates connected with the beam body are arranged on the upper side wall and the lower side wall of the air box along the length direction of the air box.

3. The self-cooling girder burner as claimed in claim 2, wherein: the middle part of bellows is equipped with the division board that is used for keeping apart bellows and roof beam body symmetry into two parts, the nozzle symmetry sets up on the roof beam body lower extreme face of division board both sides.

4. The self-cooling girder burner as claimed in claim 3, wherein: a guide plate is arranged between the front side wall and the rear side wall of the air box and the beam body, one end of the guide plate is fixedly connected with the partition plate, a bending part for bending the guide plate by 180 degrees is arranged in the middle of the guide plate, the bending part is used for dividing the guide plate into an upper horizontal part and a lower horizontal part, and secondary air channels which are communicated with each other are respectively arranged between the tail end of the upper horizontal part or the lower horizontal part and the partition plate, between the upper horizontal part or the lower horizontal part and the upper and lower inner walls of the beam body, and between the bending part and the baffle plate; the secondary air inlet is arranged on the side wall of the beam body corresponding to the inner side of the bending part.

5. The self-cooling girder burner as claimed in claim 4, wherein: the upper horizontal part and the lower horizontal part of the guide plate are parallel to each other, four groups of guide plates are respectively arranged at the front part and the rear part of the bellows, and the four groups of guide plates are symmetrically arranged at two sides of the isolation plate and are arranged up and down two by two.

6. The self-cooling girder burner as claimed in claim 1, wherein: the number of the combustion-supporting air inlets is more than four, and the combustion-supporting air inlets are symmetrically arranged on the front side wall and the rear side wall at two ends of the beam body in two groups.

7. The self-cooling girder burner as claimed in claim 1, wherein: the secondary air inlets are more than eight and are symmetrically arranged on the front side wall and the rear side wall at two ends of the beam body in two groups.

8. The self-cooling girder burner as claimed in claim 7, wherein: every group overgrate air import is four, and four overgrate air imports two liang set up on the lateral wall around the roof beam body, and arrange on the lateral wall around the roof beam body from top to bottom.

9. A self-cooling girder burner as claimed in any one of claims 1 to 8, wherein: the gas pipes and the nozzles are divided into two groups, each group of gas pipes and nozzles are six, and each group of gas pipes is arranged at intervals from top to bottom; the nozzles are arranged at intervals along the length direction of the beam body.

Technical Field

The invention relates to the technical field of furnace and kiln auxiliary equipment, in particular to a self-cooling beam type burner.

Background

At present, the cooling mode of a combustor commonly used for a beam type lime kiln mostly adopts a water cooling combustion beam technology and an oil cooling combustion beam technology. The specific operation is as follows: the burner with oil cooling or water cooling is directly placed in the flame for use, a large amount of heat is taken away by heat conducting oil or water medium while the burner is protected, so that the consumed gas quantity of the burner in the combustion process is large, and meanwhile, the flame temperature at the nozzle end of the burner is high, the harmful gas emission is large.

Disclosure of Invention

The invention aims to solve the technical problem of the prior art and provides a self-cooling beam type combustor which has the advantages of reasonable structure, low heat loss and less harmful gas emission during combustion.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

a self-cooling beam type burner comprises a hollow beam body, wherein an air box is arranged inside the beam body, a plurality of nozzles communicated with a gas pipe are arranged at the bottom of the beam body in parallel, the gas pipe is arranged inside the air box, and the gas inlet end of the gas pipe extends to the outside of the beam body and is connected with a gas pipeline; a secondary air channel is arranged between the air box and the inner wall of the beam body, and a combustion-supporting air inlet communicated with the air box and a secondary air inlet communicated with the secondary air channel are respectively arranged on the side wall of the beam body; and combustion-supporting air outlets and secondary air outlets communicated with the air box and the secondary air channel are formed in the periphery of the nozzle.

Preferably, the air box is a cuboid hollow box body, baffles are arranged at two ends of the air box, a combustion-supporting air buffer bin is formed between each baffle and each end plate of the beam body, and the combustion-supporting air inlet is formed in the side wall of the beam body corresponding to the combustion-supporting air buffer bin; a combustion-supporting air channel is arranged between the baffle and the side wall of the beam body and is used for communicating the combustion-supporting air buffer bin with the air box; ribbed plates connected with the beam body are arranged on the upper side wall and the lower side wall of the air box along the length direction of the air box.

Preferably, the middle part of the air box is provided with a partition plate for symmetrically partitioning the air box and the beam body into two parts, and the nozzles are symmetrically arranged on the lower end face of the beam body at two sides of the partition plate.

Preferably, a guide plate is arranged between the front side wall and the rear side wall of the bellows and the beam body, one end of the guide plate is fixedly connected with the partition plate, a bending part for bending the guide plate by 180 degrees is arranged in the middle of the guide plate, the bending part is used for dividing the guide plate into an upper horizontal part and a lower horizontal part, and secondary air channels which are communicated with each other are arranged between the tail end of the upper horizontal part or the lower horizontal part and the partition plate, between the upper horizontal part or the lower horizontal part and the upper and lower inner walls of the beam body, and between the bending part and the baffle plate; the secondary air inlet is arranged on the side wall of the beam body corresponding to the inner side of the bending part.

Preferably, the upper horizontal part and the lower horizontal part of the guide plate are parallel to each other, four groups of guide plates are respectively arranged at the front part and the rear part of the air box, and the four groups of guide plates are symmetrically arranged at two sides of the isolation plate and are arranged up and down two by two.

Preferably, the number of the combustion-supporting air inlets is more than four, and the combustion-supporting air inlets are symmetrically arranged on the front side wall and the rear side wall of the two ends of the beam body in two groups.

Preferably, the number of the secondary air inlets is more than eight, and the secondary air inlets are symmetrically arranged on the front side wall and the rear side wall at two ends of the beam body in two groups.

Preferably, every group overgrate air import is four, and four overgrate air imports two by two set up on the lateral wall around the roof beam body, and arrange on the lateral wall around the roof beam body from top to bottom.

Preferably, the gas pipes and the nozzles are divided into two groups, each group of gas pipes and nozzles are six, and each group of gas pipes is arranged at intervals from top to bottom; the nozzles are arranged at intervals along the length direction of the beam body.

Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: compared with the prior art, the air box is embedded in the hollow beam body, the nozzle at the bottom of the beam body is communicated with the gas pipe in the air box, the secondary air channel is formed between the air box and the inner wall of the beam body, combustion-supporting air flows outside the gas pipe in the air box, the combustion-supporting air inlet communicated with the air box and the secondary air inlet communicated with the secondary air channel are both arranged on the side wall of the beam body, the air box and the secondary air channel are utilized to play a role in cooling, and a cooler is not required to be additionally installed; and meanwhile, combustion-supporting air outlets and secondary air outlets which are communicated with the air box and the secondary air channel are formed in the periphery of the nozzle, and the combustion-supporting air and the secondary air participate in secondary combustion at the nozzle after heat exchange.

Drawings

FIG. 1 is a front view of a self-cooling beam burner provided by an embodiment of the present invention;

FIG. 2 is a top view of the self-chilled beam combustor of FIG. 1;

FIG. 3 is a cross-sectional view C-C of FIG. 2;

FIG. 4 is a sectional view A-A of FIG. 2;

FIG. 5 is a cross-sectional view B-B of FIG. 2;

FIG. 6 is an enlarged view of a portion of FIG. 1 at I;

in the figure: 1-a beam body; 2-an air box; 3-a gas pipe; 4-a nozzle; 5-secondary air channel; 6-combustion-supporting air inlet; 7-secondary air inlet; 8-combustion-supporting air outlet; 9-secondary air outlet; 10-a baffle plate; 11-combustion-supporting air buffer bin; 12-secondary air flow direction; 13-a rib plate; 14-a separator plate; 15-guide plate, 150-bending part, 151-upper horizontal part and 152-lower horizontal part.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 and 2, the self-cooling beam type burner provided by the invention comprises a hollow beam body 1, wherein an air box 2 is arranged inside the beam body 1, a plurality of nozzles 4 communicated with a gas pipe 3 are arranged at the bottom of the beam body 1 in parallel, the gas pipe 3 is arranged inside the air box 2, and the air inlet end of the gas pipe 3 extends to the outside of the beam body 1 and is connected with a gas pipeline; a secondary air channel 5 is arranged between the air box 2 and the inner wall of the beam body 1, and a combustion-supporting air inlet 6 communicated with the air box 2 and a secondary air inlet 7 communicated with the secondary air channel 5 are respectively arranged on the side wall of the beam body 1; and combustion-supporting air outlets 8 and secondary air outlets 9 which are communicated with the air box 2 and the secondary air channel 5 are formed in the periphery of the nozzle 4, so that a three-channel nozzle structure is formed. The cooling function is achieved by utilizing the air box and the secondary air channel, meanwhile, the periphery of the nozzle is provided with a combustion-supporting air outlet and a secondary air outlet which are communicated with the air box and the secondary air channel, and the high-temperature secondary air after heat exchange participates in secondary combustion of flame at the nozzle outlet, so that the combustion efficiency of the combustor is improved.

In a specific embodiment of the present invention, as shown in fig. 1 and 5, the air box 2 is a rectangular hollow box, baffles 10 are arranged at two ends of the air box 2, a combustion-supporting air buffer bin 11 is formed between the baffles and two end plates of the 10 beam body 1, and the combustion-supporting air inlet 6 is arranged on a side wall of the beam body 1 corresponding to the combustion-supporting air buffer bin 11; a combustion-supporting air channel is arranged between the baffle 10 and the side wall of the beam body 1 and is used for communicating the combustion-supporting air buffer bin 11 with the air box 2; ribbed plates 13 connected with the beam body 1 are arranged on the upper side wall and the lower side wall of the air box 2 along the length direction of the air box, so that the air box is firmly installed. Combustion-supporting air enters the combustion-supporting air buffer bin through the combustion-supporting air inlet, then enters the air box through the combustion-supporting air channel, is finally sprayed out through the combustion-supporting air outlets around the nozzles to participate in primary combustion, and the combustion-supporting air is utilized to enable fuel gas to be fully combusted.

In one embodiment of the present invention, as shown in fig. 1 and 4, the middle of the wind box 2 is provided with a partition plate 14 for symmetrically dividing the wind box 2 and the beam body 1 into two parts; the nozzles 4 are symmetrically arranged on the lower end faces of the beam bodies 1 at two sides of the isolation plate 14. The length of the gas pipe can be effectively shortened by utilizing the partition plate, so that the gas pipe is reasonably distributed in the air box; meanwhile, the heat of the secondary air and the beam body is fully exchanged, and the efficiency of the secondary air heat exchange is improved.

In a specific embodiment of the present invention, as shown in fig. 3 and 5, a flow guide plate 15 is disposed between the front and rear side walls of the air box 2 and the beam body 1, one end of the flow guide plate 15 is fixedly connected to the isolation plate 14, a bending portion 150 for bending the flow guide plate 15 by 180 ° is disposed in the middle of the flow guide plate 15, the bending portion 150 is used for dividing the flow guide plate 15 into an upper horizontal portion 151 and a lower horizontal portion 152, and secondary air channels 5 which are communicated with each other are disposed between the end of the upper horizontal portion 151 or the lower horizontal portion 152 and the isolation plate 14, between the upper horizontal portion 151 or the lower horizontal portion 152 and the upper and lower inner walls of the beam body 1, and between the bending portion 150 and; the secondary air inlet 7 is arranged on the side wall of the beam body 1 corresponding to the inner side of the bending part 150. The guide plate adopts the S-shaped rotary channel to increase the flow path of the secondary air, so that the secondary air and the heat conducted by the beam body can be subjected to sufficient heat exchange, the self-cooling of the combustor is realized, and the service life of the combustor is prolonged.

In an embodiment of the present invention, as shown in fig. 3, the upper horizontal portion 151 and the lower horizontal portion 152 of the air guide plate 15 are parallel to each other, four sets of air guide plates 15 are respectively disposed at the front and the rear of the wind box 2, and the four sets of air guide plates 15 are symmetrically disposed at both sides of the partition plate 14 and arranged two by two up and down. By adopting the structure, secondary air can be divided and enter, and finally discharged from secondary air outlets around the nozzle to participate in secondary combustion.

In the specific manufacturing process, as shown in fig. 2 and 4, the number of the combustion-supporting air inlets 6 is more than four, and the combustion-supporting air inlets are symmetrically arranged on the front side wall and the rear side wall at the two ends of the beam body 1 in two groups. Wherein, the number of the secondary air inlets 7 is more than eight, and the secondary air inlets are symmetrically arranged on the front side wall and the rear side wall at the two ends of the beam body 1 in two groups; every group overgrate air import 7 is four, and four overgrate air imports 7 two liang set up on the lateral wall around the roof beam body 1, and arrange on the lateral wall around the roof beam body 1 from top to bottom. The number of the combustion-supporting air inlets and the number of the secondary air inlets can be adjusted according to actual conditions.

As shown in fig. 1, the gas pipes 3 and the nozzles 4 are divided into two groups, each group of gas pipes 3 and nozzles 4 is six, and each group of gas pipes 3 are arranged at intervals from top to bottom; the nozzles 4 are arranged at intervals along the length direction of the beam body 1. Wherein, the quantity of nozzle is unanimous with the quantity of gas pipe, can adjust according to actual conditions.

The working principle of the invention is as follows: when the three-channel nozzle is used, fuel gas enters the fuel gas channel of the three-channel nozzle structure through the fuel gas pipe, combustion-supporting air enters the combustion-supporting air outlet channel of the three-channel nozzle through the air box, and the combustion-supporting air and the fuel gas are combusted for the first time at the nozzle outlet. Meanwhile, secondary air enters a secondary air channel between the guide plates outside the air box, a plurality of secondary air inlets are formed in the two ends of the beam body, and the secondary air of the secondary air channel finally converges on the lower end face of the air box and enters a secondary air outlet channel of the three-channel nozzle to be discharged. At the moment, heat transferred by the burner placed in the flame is exchanged with air in the secondary air channel, and the secondary air absorbs a large amount of heat while protecting the burner beam body. And finally, high-temperature secondary air participates in secondary combustion of flame at a secondary air outlet of the nozzle.

In conclusion, the invention can realize self-cooling of the burner, solves the problem of taking away a large amount of heat by adopting heat conduction oil cooling or water cooling, and greatly reduces the energy consumption of the burner during combustion. On the other hand, the secondary air reduces the temperature of the combustor through heat exchange, improves the combustion efficiency of the combustor and reduces the emission of harmful gas during combustion.

The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.