CN217519854U - A kind of burner - Google Patents

Abstract

The application relates to the field of combustors, in particular to a combustor. The combustor comprises a first combustion assembly and a second combustion assembly, wherein the first combustion assembly comprises a shell and a combustion head; the shell is surrounded with a first combustion chamber; the second combustion component comprises a flame guide pipe, a combustion-supporting gas inlet pipe and a smoke exhaust pipe; the second combustion assembly is provided with a second combustion cavity, the flame guide pipe is communicated with the smoke port and the second combustion cavity, the combustion-supporting gas inlet pipe is communicated with the second combustion cavity, one end of the smoke exhaust pipe is communicated with the second combustion cavity, and the other end of the smoke exhaust pipe is connected with one end, close to the first combustion cavity, of the flame guide pipe. Combustible gas is combusted in the first combustion assembly, and combustion-supporting gas is introduced through the combustion-supporting gas inlet pipe, so that smoke is combusted secondarily and sufficiently in the second combustion cavity, and the release of harmful gas is reduced; the temperature of the shell is reduced, the heat loss of the shell is reduced, and the heat efficiency is improved. The pollution of the flue gas to the position of the second combustion cavity is avoided.

Description

A kind of burner

Technical Field

The application relates to the field of combustors, in particular to a combustor.

Background

The radiant tube burner utilizes the burner in the radiant tube to generate high-temperature flue gas, the heat is radiated and transferred to the radiant tube, the radiant tube then radiates and transfers the heat to media in the heating furnace, the high-temperature flue gas gradually exchanges heat and cools in the radiant tube under the flow guiding action of the pipeline, the high-temperature flue gas flows to the rear end from the front end of the radiant tube, and then flows out of the radiant tube from the periphery of the rear end and returns to the outlet of the front end.

But the radiant tube burner has a problem of insufficient combustion.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the present application is to provide a burner, which aims to improve the problem of sufficient combustion compensation of the existing radiant tube burner.

The present application provides a burner comprising a first combustion assembly and a second combustion assembly; the first combustion assembly comprises a housing and a combustion head; the shell is surrounded with a first combustion cavity, the combustion head is positioned in the first combustion cavity, and the shell is provided with a flue gas port for discharging flue gas; the second combustion assembly comprises a flame guide pipe, a combustion-supporting gas inlet pipe and a smoke exhaust pipe; the second combustion assembly is provided with a second combustion cavity, the flame guide pipe is communicated with the smoke port and the second combustion cavity, the combustion-supporting gas inlet pipe is communicated with the second combustion cavity, one end of the smoke exhaust pipe is communicated with the second combustion cavity, and the other end of the smoke exhaust pipe is connected with one end, close to the first combustion cavity, of the flame guide pipe.

Combustible gas is combusted in the first combustion assembly, then the flue gas enters the second combustion cavity through the flame guide pipe, and the combustion-supporting gas is introduced through the combustion-supporting gas inlet pipe, so that the flue gas is combusted secondarily in the second combustion cavity, the flue gas is fully combusted, and the release of harmful gases such as carbon monoxide is reduced; the temperature of the shell is reduced, the heat loss of the shell is reduced, and the heat efficiency is improved. The smoke exhaust pipe discharges smoke in the second combustion chamber to one end, close to the first combustion chamber, of the flame guide pipe; the pollution of the flue gas to the position of the second combustion cavity is avoided.

In some embodiments of the present application, the oxidant gas inlet pipe extends at least partially into the flue pipe.

In some embodiments of the present application, the first combustion assembly further comprises a first insulating member disposed on an inner wall of the housing.

In some embodiments of the present application, a smoke exhaust pipe extends to an end of the housing distal from the second combustion assembly; and a second heat preservation piece is arranged between the smoke exhaust pipe and the shell.

In some embodiments of the present application, the combustion supporting gas inlet pipe is provided with a gas distribution pipe.

In some embodiments of the present application, the smoke exhaust pipe is provided with a radiation part, and the radiation part is sleeved outside the smoke exhaust pipe; and the second combustion chamber is positioned at one end of the radiation part far away from the first combustion assembly.

In some embodiments of the present application, the first combustion assembly further comprises a perforated plate connected to the burner head along a flow path of the combustible gas within the first combustion chamber, the burner head being located downstream of the perforated plate.

In some embodiments of the present application, the first combustion assembly further comprises a mixture intake pipe in communication with the first combustion chamber.

In some embodiments of the present application, the second combustion assembly comprises a plurality of said combustion gas inlet tubes distributed around said flame conducting tube.

In some embodiments of the present application, a width of a gap between the smoke exhaust pipe and the flame guide pipe in a radial direction of the flame guide pipe is smaller than an inner diameter of the flame guide pipe.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 is a schematic view illustrating an internal structure of a combustor provided in an embodiment of the present application;

FIG. 2 shows an enlarged schematic view at A in FIG. 1;

FIG. 3 shows an enlarged view at B in FIG. 1;

fig. 4 is a schematic view showing a partial structure of an oxidant gas inlet pipe provided in the embodiment of the present application.

Icon: 100-a burner; 110-a first combustion assembly; 111-a housing; 112-a burner head; 113-a multi-well plate; 114-a first thermal insulation; 115-a second insulating member; 116-a first combustion chamber; 117-mixture inlet pipe; 120-a second combustion assembly; 121-flame guide tube; 122-combustion-supporting gas inlet pipe; 123-smoke exhaust pipe; 124-a radiation part; 125-a second combustion chamber; 126-gas distribution pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present application, it is to be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, refer to the orientation or positional relationship as shown in the drawings, or as conventionally placed in use of the product of the application, or as conventionally understood by those skilled in the art, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting the present application.

Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Examples

Fig. 1 shows a schematic internal structure diagram of a burner 100 provided in an embodiment of the present application, please refer to fig. 1, the embodiment provides a burner 100, the burner 100 provided in the embodiment can be used in various scenes that need to be heated, and the embodiment does not limit the use of the burner 100.

The burner 100 comprises a first combustion assembly 110 and a second combustion assembly 120, wherein the first combustion assembly 110 and the second combustion assembly 120 are connected with each other, and combustible gas is introduced into the first combustion assembly 110 and enters the second combustion assembly 120 to be continuously combusted after the first combustion assembly 110 is combusted; in this process, the combustion-supporting gas needs to be introduced into the second combustion assembly 120, and no additional combustible gas needs to be introduced into the second combustion assembly 120.

In the present application, the combustible gas may be natural gas or other combustible-containing gas; the combustion-supporting gas can be air or oxygen, and the type of combustible gas and combustion-supporting gas is not limited in the embodiment of the application.

Fig. 2 is an enlarged view of a portion a in fig. 1, and referring to fig. 1 and 2, the first combustion assembly 110 includes a housing 111, a combustion head 112, a porous plate 113, a first heat-insulating member 114, and a second heat-insulating member 115.

The housing 111 encloses a first combustion chamber 116, and the combustion head 112, the porous plate 113 and the first heat insulating member 114 are all located in the first combustion chamber 116. The housing 111 is provided with a flue gas port for discharging flue gas and an air inlet for allowing combustible gas to enter. Both the air inlet and the flue gas port are in communication with the first combustion chamber 116. In the present application, the shape and material of the housing 111 are not limited, and the shape of the housing 111 may be set according to the usage scenario of the burner 100.

In this embodiment, the first thermal insulation member 114 is attached to the inner wall of the housing 111, the first thermal insulation member 114 is a layered structure, and the shape of the first thermal insulation member 114 matches the shape of the inner wall of the housing 111. The main function of the first thermal insulation member 114 is to prevent more heat in the first combustion chamber 116 from being dissipated to the outside of the casing 111, and to prevent the casing 111 from being cooled due to an excessive temperature. The material of the first insulating member 114 is not limited in this embodiment. It is understood that in other embodiments of the present application, the shape of the first insulating member 114 may not match the shape of the inner wall of the housing 111, and may be set according to the shape requirement of the first combustion chamber 116; alternatively, in some embodiments of the present application, for embodiments in which the material with good thermal insulation property is selected for the casing 111, the first thermal insulation member 114 is not necessary, and the first thermal insulation member 114 may not be provided.

The burner head 112, the perforated plate 113 are both located within the first combustion chamber 116, and in this embodiment, the burner head 112 is located downstream of the perforated plate 113 along the flow path of the combustible gas within the first combustion chamber 116. In other words, the perforated plate 113 is closer to the inlet of the combustible gas than the burner head 112. The porous plate 113 has the function of preventing backfire, and combustible gas firstly passes through the porous plate 113 and then enters the combustion head 112 for combustion; in some embodiments, perforated plate 113 may not be provided.

Illustratively, in embodiments of the present application, the combustion head 112 may be a porous media burner 100, such as a porous ceramic media burner 100, or a porous metal media burner 100.

The second heat preservation member 115 is positioned outside the shell 111, and the second heat preservation member 115 has the function of isolating the shell 111 from other parts, so that the temperature of the shell 111 is prevented from being rapidly diffused; reducing heat utilization; it is understood that the second insulating member 115 is not essential in the embodiment of the present application, and the second insulating member 115 may not be provided.

In this embodiment, the first combustion assembly 110 is provided with a mixed gas inlet pipe 117, the mixed gas inlet pipe 117 is communicated with the first combustion chamber 116, and the mixed gas inlet pipe 117 is used for conveying a mixed gas to the first combustion chamber 116, where the mixed gas includes a combustible gas and a combustion-supporting gas; the components and the proportion of the combustible gas and the combustion-supporting gas can be selected according to specific use scenes, and the application does not limit the components and the proportion.

The first combustion assembly 110 is provided with a mixed gas inlet pipe 117, and when the first combustion assembly is used, the mixed gas is input from the mixed gas inlet pipe 117, so that the combustion in the first combustion chamber 116 of the first combustion assembly 110 is more sufficient, and the content of carbon monoxide in the first combustion chamber can be reduced.

In other embodiments, the first combustion assembly 110 may not be provided with the air-fuel mixture inlet pipe 117, and the air-fuel mixture inlet pipe 117 may be separately provided, so as to communicate the air-fuel mixture inlet pipe 117 with the first combustion chamber 116 after the first combustion assembly 110 is used.

After the combustible gas is burned and sintered in the first combustion chamber 116, the combustible gas enters the second combustion assembly 120 to be continuously combusted, so that the content of combustible substances in the flue gas is reduced.

Fig. 3 shows an enlarged view at B in fig. 1, and referring to fig. 1 and 3, in the embodiment of the present application, the second combustion assembly 120 includes a flame guide pipe 121, an oxidant gas inlet pipe 122, a smoke exhaust pipe 123, and a radiation portion 124. The second combustion assembly 120 has a second combustion chamber 125; in this embodiment, the second combustion chamber 125 is surrounded by a smoke exhaust pipe 123.

Flame guide tube 121 is in communication with first combustion assembly 110, specifically, flame guide tube 121 is in communication with the flue gas port of first combustion assembly 110.

The combustion-supporting gas inlet pipe 122 is communicated with the second combustion chamber 125, and the combustion-supporting gas inlet pipe 122 mainly functions to convey combustion-supporting gas to the second combustion chamber 125 and promote the combustion of the flue gas entering the second combustion chamber 125 again.

The smoke exhaust pipe 123 is communicated with the second combustion chamber 125, and the smoke exhaust pipe 123 mainly functions to exhaust the smoke of the second combustion chamber 125.

In the present application, in order to avoid the pollution of the second combustion assembly 120 by the exhausted flue gas, one end of the smoke exhaust pipe 123 is communicated with the second combustion chamber 125, and the other end of the smoke exhaust pipe 123 is connected with one end of the flame guide pipe 121 close to the first combustion chamber 116; the smoke exhaust pipe 123 exhausts the smoke in the second combustion chamber 125 to the location of the first combustion assembly 110; when the burner 100 provided by the present application is utilized, the second combustion assembly 120 can be extended into a portion to be heated, and no flue gas is discharged from the position of the second combustion assembly 120, so that pollution to the portion to be heated can be avoided to a great extent.

In this embodiment, one end of the smoke exhaust pipe 123 is enclosed to form the second combustion chamber 125, and it is understood that in other embodiments of the present application, the second combustion chamber 125 may be enclosed by an additional housing.

In this embodiment, the end of the smoke exhaust pipe 123 far away from the second combustion assembly 120 is connected to the outer shell 111, further, the second heat insulation member 115 is located between the smoke exhaust pipe 123 and the outer shell 111, and the end of the smoke exhaust pipe 123 far away from the second combustion chamber 125 is flush with the air inlet of the outer shell 111.

In this embodiment, the smoke exhaust pipe is provided with a radiation part 124, and the radiation part 124 is sleeved outside the flame guide pipe; and the second combustion chamber is located at one end of the radiant section away from the first combustion assembly. The radiation unit 124 radiates heat in the second combustion chamber 125, and heats the environment around the smoke exhaust pipe 123 with the heat.

In this embodiment, the radiation portion 124 is integrally disposed with the smoke exhaust pipe 123, that is, the radiation portion 124 is a part of the smoke exhaust pipe 123, and the radiation portion 124 has a function of radiating heat and a function of guiding smoke.

It is understood that in other embodiments of the present application, the radiation portion 124 may be provided separately from the smoke exhaust pipe 123; illustratively, the radiating portion 124 is attached to the outer wall of the smoke exhaust pipe 123, or the radiating portion 124 is attached to the inner wall of the smoke exhaust pipe 123. When only the environment in a specific direction or a specific position needs to be heated, the radiation part 124 can be attached to only part of the position of the smoke exhaust pipe 123, so that the heat utilization rate is increased.

In this embodiment, the smoke discharge pipe 123 and the flame guide pipe 121 are both circular pipes, the smoke discharge pipe 123 is sleeved outside the flame guide pipe 121, the second combustion chamber 125 is located at an end of the flame guide pipe 121, the length of the smoke discharge pipe 123 is greater than that of the flame guide pipe 121, and the smoke discharge pipe 123 is located outside the second combustion chamber 125. In this embodiment, the radiation part 124 has a tubular shape, and the radiation part 124 is located outside the second combustion chamber 125. The smoke exhaust pipe 123 and the flame guide pipe 121 are sleeved with each other, heat can be transferred to the periphery as far as possible, in addition, the flame guide pipe 121 is positioned in the smoke exhaust pipe 123, smoke in the flame guide pipe 121 can be heated, and the smoke can be rapidly combusted after entering the second combustion cavity 125 and being in contact with combustion-supporting gas, so that the smoke can be fully combusted.

It should be noted that in other embodiments of the present application, the smoke exhaust pipe 123 and the flame guide pipe 121 may have other shapes.

As mentioned above, the combustion-supporting gas inlet pipe 122 is communicated with the second combustion chamber 125; in the present embodiment, in order to heat the combustion-supporting gas in the combustion-supporting gas inlet pipe 122, at least a part of the combustion-supporting gas inlet pipe 122 is sleeved in the smoke exhaust pipe 123; that is, the combustion-supporting gas inlet pipe 122 extends from the smoke exhaust pipe 123, and then extends to the second combustion chamber 125, and contacts with the flue gas in the second combustion chamber 125 to perform secondary combustion on the flue gas.

The heat in the smoke exhaust pipe 123 can heat the combustion-supporting gas in the combustion-supporting gas inlet pipe 122, when the combustion-supporting gas enters the second combustion chamber 125, the combustion-supporting gas exchanges heat with the flue gas in the smoke exhaust pipe 123, the combustion-supporting gas is heated, the flue gas in the second combustion chamber 125 can be rapidly combusted, and the heat of the flue gas is fully utilized.

It is understood that in other embodiments of the present application, the combustion-supporting gas inlet pipe 122 may not be sleeved in the flue gas pipe, and the combustion-supporting gas inlet pipe 122 may be directly communicated with the second combustion chamber 125 under the condition that it is ensured that the gas in the second combustion chamber 125 is not leaked.

Fig. 4 is a partial schematic structural diagram of the combustion-supporting gas inlet pipe 122 provided in the embodiment of the present application, please refer to fig. 1 and fig. 4, in the embodiment, the combustion-supporting gas inlet pipe 122 is provided with a gas distribution pipe 126; the combustion-supporting gas in the combustion-supporting gas inlet pipe 122 is distributed through a gas distribution pipe 126, and the outlet of the gas distribution pipe 126 delivers the combustion-supporting gas to the second combustion chamber 125 through a plurality of pipelines.

Referring to fig. 1 again, in the present embodiment, compared to the combustion-supporting gas inlet pipe 122, the end of the flame guiding pipe 121 is closer to the end of the second combustion assembly 120 away from the first combustion assembly 110; the second combustion assembly 120 is substantially T-shaped with respect to the first combustion assembly 110, and the second combustion assembly 120 has a length greater than that of the first combustion assembly 110 along the length of the flame guide tube 121, and the second combustion assembly 120 has a length less than that of the first combustion assembly 110 along a direction perpendicular to the length of the flame guide tube 121. In the present embodiment, the width of the gap between the smoke discharge pipe 123 and the flame guide pipe 121 is smaller than the inner diameter of the flame guide pipe 121 in the radial direction of the flame guide pipe 121. The flame is burned at the outlet of the flame guide tube 121, so that the temperature in the second combustion chamber is high, a high-temperature combustion region is formed, and the combustion heat is efficiently utilized.

In the present application, the inner diameter of the flame guide pipe 121 is 60mm, the outer diameter of the flame guide pipe 121 is 80mm, the radial direction of the flame guide pipe 121, the width of the gap between the smoke discharge pipe 123 and the flame guide pipe 121 is 62.76mm, and the inner diameter of the smoke discharge pipe 123 is 120 mm. It is to be understood that, in the present application, the foregoing size is merely an example, and is not limited to the above size, and the size of each component may be selected according to a usage scenario.

It should be noted that, in other embodiments of the present application, the flame guide tube 121 of the second combustion assembly 120 may be configured in an S-shape, etc., and the present application does not limit the path direction of the tube.

The combustor 100 provided by the embodiment of the application has at least the following advantages:

combustible gas is combusted in the first combustion assembly 110, then the flue gas enters the second combustion cavity 125 through the flame guide pipe 121, and the combustion-supporting gas is introduced through the combustion-supporting gas inlet pipe 122, so that the flue gas is combusted secondarily in the second combustion cavity 125, the flue gas is combusted fully, and the release of harmful gases such as carbon monoxide is reduced; the smoke exhaust pipe 123 discharges the smoke in the second combustion chamber 125 to one end of the flame guide pipe 121 close to the first combustion chamber 116; the second combustion chamber 125 is located at a position that does not release the flue gas, thereby avoiding the flue gas from polluting the position of the second combustion chamber 125.

In addition, the combustor 100 of this application includes two combustion assembly, reduces the temperature of shell, has reduced the shell and has lost the heat, and the installation of combustion-supporting gas intake pipe forms the heat exchange with the exhaust pipe, reduces the tail gas temperature, the increase of thermal efficiency. The burner 100 of the present application is suitable for radiant heating of atmosphere sensitive materials, or for submerged heating of liquid metals with less radiation absorption

For the embodiment that at least part of the combustion-supporting gas inlet pipe 122 is sleeved in the smoke exhaust pipe 123, the heat of the smoke exhaust pipe 123 can be fully utilized to preheat the combustion-supporting gas, so that the combustion in the second combustion chamber 125 is more sufficient.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A burner, characterized in that it comprises:

a first combustion assembly; the first combustion assembly comprises a housing and a combustion head; the shell is surrounded with a first combustion cavity, the combustion head is positioned in the first combustion cavity, and the shell is provided with a flue gas port for discharging flue gas; and

the second combustion assembly comprises a flame guide pipe, a combustion-supporting gas inlet pipe and a smoke exhaust pipe; the second combustion assembly is provided with a second combustion cavity, the flame guide pipe is communicated with the smoke port and the second combustion cavity, the combustion-supporting gas inlet pipe is communicated with the second combustion cavity, one end of the smoke exhaust pipe is communicated with the second combustion cavity, and the other end of the smoke exhaust pipe is connected with one end, close to the first combustion cavity, of the flame guide pipe.

2. The burner of claim 1 wherein said combustion supporting gas inlet pipe extends at least partially into said smoke exhaust pipe.

3. The burner of claim 1, wherein the first combustion assembly further comprises a first insulating member disposed on an inner wall of the housing.

4. The burner of claim 1, wherein the smoke exhaust tube extends to an end of the housing distal from the second combustion assembly; and a second heat preservation piece is arranged between the smoke exhaust pipe and the shell.

5. The burner of claim 1, wherein the combustion gas inlet pipe is provided with a gas distribution pipe.

6. The burner of claim 1, wherein the smoke exhaust pipe is provided with a radiation part which is sleeved outside the flame guide pipe; and the second combustion chamber is positioned at one end of the radiation part far away from the first combustion assembly.

7. The burner of claim 1, wherein the first combustion assembly further comprises a perforated plate coupled to the burner head along a flow path of the combustible gas within the first combustion chamber, the burner head being positioned downstream of the perforated plate.

8. The burner of claim 1, wherein the first combustion assembly further comprises a mixture intake conduit in communication with the first combustion chamber.

9. The burner of claim 1, wherein the second combustion assembly includes a plurality of said combustion-supporting gas inlets distributed about the flame guide tube.

10. The burner of claim 1, wherein a gap width between the smoke exhaust pipe and the flame guide pipe in a radial direction of the flame guide pipe is smaller than an inner diameter of the flame guide pipe.

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