CN214425992U

CN214425992U - A burner and combustion equipment

Info

Publication number: CN214425992U
Application number: CN202120393083.0U
Authority: CN
Inventors: 付超; 张振文; 任志恒; 朱凯; 孔凡磊; 战斗
Original assignee: Zhongke Zhuoyi Environmental Technology Dongguan Co ltd; Songshan Lake Materials Laboratory
Current assignee: Zhongke Zhuoyi Environmental Technology Dongguan Co ltd; Songshan Lake Materials Laboratory
Priority date: 2021-02-22
Filing date: 2021-02-22
Publication date: 2021-10-19
Anticipated expiration: 2031-02-22

Abstract

The present application relates to the field of equipment, in particular, to a burner and combustion equipment. The burner includes: an intake chamber; a combustion chamber and a combustion assembly, the combustion assembly includes interconnected porous media and a first cooling pipe, the combustion assembly is provided with at least one passage for gas to pass through, and at least two side walls of each passage are first cooling pipe. The part of the resistance that enters the combustion chamber through the channel for combustion is small, which can make the burner enter the combustion state quickly, solve the problem of unstable fire detection when the combustion of porous media is small, and also reduce the combustion resistance. For flameless combustion, the combustion state of the part of the flameless combustion through the porous medium is relatively stable, and the heat provided by the combustion part of the porous medium to the outside stabilizes the flame of the combustion part through the channel, which solves the problem of entering the combustion chamber through the channel to burn the part of the flame. unstable situation.

Description

Combustor and combustion equipment

Technical Field

The application relates to the field of equipment, in particular to a combustor and combustion equipment.

Background

Porous media combustion is a combustion mode in which porous media are added to a burner. The combustor added with the porous medium enables the temperature of a combustion area to tend to be uniform due to the existence of three heat exchange modes of convection, heat conduction and radiation, and keeps a relatively stable temperature gradient. Compared with free combustion, the porous medium combustion has the advantages of high combustion rate, good combustion stability, large load regulation range, large heat accumulation intensity, small volume of the combustor, good gas adaptability, low pollutant discharge in flue gas, wide combustion limit, low combustible heat value and the like.

However, the porous medium burner is easy to have the problems of unstable fire detection signals and overlarge combustion resistance at the time of low load.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a combustor and a combustion device, which aim at solving the problems that the existing porous medium combustor has unstable fire detection signals and overlarge combustion resistance at the time of low load.

The present application provides a burner, the burner includes:

an air intake chamber;

a combustion chamber; and

separate the combustion module of air intake chamber and combustion chamber, combustion module includes interconnect's porous medium and first cooling tube, combustion module is provided with at least one passageway that supplies the gas to pass through, porous medium with first cooling tube all with the inner wall of combustion chamber is connected, the passageway intercommunication air intake chamber with the combustion chamber, every two at least lateral walls of passageway are first cooling tube.

A part of the gas in the air inlet chamber is subjected to flameless combustion in the combustion chamber through the porous medium, and a part of the gas enters the combustion chamber through the channel for combustion. Form two kinds of combustion state in whole combustion chamber, it is less to get into the partial resistance that the combustion chamber carries out the burning through the passageway, can make the combustor get into the combustion state fast, reduce the combustion resistance, the fast burning drives simultaneously and carries out flameless burning through porous medium, the partial combustion state of flameless burning through porous medium goes on is more stable, the heat that porous medium combustion part externally provided plays stabilizing effect to through passageway combustion part flame, the condition of entering the combustion chamber through the passageway and carrying out combustion part flame unstability has been solved.

In some embodiments of the first aspect of the present application, the combustion assembly comprises a plurality of said porous media arranged at intervals, each of said porous media being connected on both sides to said first cooling pipe, and at least one of said passages being provided between two adjacent ones of said porous media.

In some embodiments of the first aspect of the present application, the combustion assembly comprises a plurality of said first cooling tubes, one of said first cooling tubes being connected to one of said porous media on each of two sides.

In some embodiments of the first aspect of the present application, the combustion chamber is provided with a second cooling duct.

In some embodiments of the first aspect of the present application, the second cooling tube is spaced from the passage and is configured to enable a plume of combusted gases passing through the passage to contact the second cooling tube.

In some embodiments of the first aspect of the present application, the intake chamber and said combustion chamber are jacketed by a cooling assembly.

In some embodiments of the first aspect of the present application, a perforated plate is provided within the inlet chamber, the perforated plate being provided with a plurality of gas distribution holes extending towards the combustion chamber.

In some embodiments of the first aspect of the present application, the width of the channel is 0.5-1.5 mm.

The width of passageway is 0.5-1.5mm, can avoid the part that the natural gas got into the combustion chamber through the passageway and carries out the burning to lead to the burning unstable because the width is too big, and if the width is great also can lead to more gas to get into the combustion chamber through the passageway, lead to carrying out flameless burning through porous medium partly less, be unfavorable for the stability of burning.

In some embodiments of the first aspect of the present application, the combustion chamber is provided with a flame detector.

The application also provides a combustion device, which comprises a gas mixing chamber and the combustor, wherein the gas mixing chamber is used for mixing fuel gas and combustion-supporting gas, and the gas mixing chamber is communicated with the gas inlet chamber.

The combustion apparatus that this application embodiment provided burning resistance is less, and whole combustion assembly's temperature is more even, and the burning is stable.

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 shows a schematic internal structure diagram of a first view angle of a combustor provided by an embodiment of the present application.

Fig. 2 shows a schematic internal structure diagram of a second view angle of the combustor provided by the embodiment of the application.

Fig. 3 shows a schematic structural diagram of a combustion apparatus provided in embodiment 2 of the present application.

Icon: 100-a burner; 110-an inlet chamber; 111-a multi-well plate; 120-a combustion assembly; 121-a porous medium; 122 — first cooling tube; 123-channel; 130-a combustion chamber; 131-a second cooling tube; 132-a flame detector; 140-a cooling assembly; 200-a combustion device; 210-gas mixing chamber.

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 should be understood that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when products of the application are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are used only for convenience in describing the application and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have specific orientations, be constructed in specific orientations, and operate, and therefore, should not be construed as limiting the 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.

Example 1

Fig. 1 is a schematic diagram illustrating an internal structure of a first view of a burner 100 according to an embodiment of the present disclosure, and referring to fig. 1, the embodiment provides a burner 100.

The combustor 100 basically includes an intake chamber 110, a combustion assembly 120 and a combustion chamber 130. The combustion chamber 130 is used to divide the burner 100 into an intake chamber 110 and a combustion chamber 130, in other words, the intake chamber 110 and the combustion chamber 130 are respectively arranged on two sides of the combustion assembly 120 along the direction of gas intake. Gas enters the burner 100 through the intake chamber 110 and is ignited by the combustion assembly 120 and combusted within the combustion chamber 130.

Fig. 2 is a schematic diagram illustrating an internal structure of the combustor 100 from a second perspective according to an embodiment of the present disclosure.

Referring to fig. 1 and 2, in the present application, the combustion assembly 120 includes a porous medium 121 and a first cooling pipe 122, and the porous medium 121 is connected to the first cooling pipe 122; the porous medium 121 and the first cooling pipe 122 are both connected with the inner wall of the combustion chamber 130, the combustion assembly 120 is provided with a channel 123, and at least two side walls of the channel 123 are the first cooling pipe 122; the passage 123 is provided for the passage of the combustion gas, and in the embodiment of the present application, the combustion assembly 120 includes three passages 123, and at least two side walls of each passage 123 are the first cooling pipes 122. It should be noted that in other embodiments of the present application, the number of the channels 123 may be one, two, four or more, and may be set according to the size and dimension of the combustor 100.

In the embodiment of the present application, the combustion assembly 120 includes 4 porous media 121 and 8 first cooling pipes 122, in this embodiment, the material of the porous media 121 is foam silicon carbide, the porous media 121 is rectangular thin plate, and the first cooling pipes 122 are fixedly connected to the porous media 121. Both ends of each porous medium 121 in the length direction are connected to the inner wall of the combustion chamber 130, and both ends of each porous medium 121 in the width direction are connected to the first cooling pipe 122; two first cooling pipes 122 are provided between two adjacent porous media 121, and one passage 123 is provided between the two first cooling pipes 122. The first cooling pipe 122 forms two ends of the channel 123, the channel 123 can be used for gas to pass through, then the gas is combusted in the combustion chamber 130, the gas entering the combustion chamber 130 from the channel 123 can be rapidly combusted, the combustion resistance of the combustor 100 is reduced, and the temperature of the first cooling pipe 122 can be reduced, so that the backfire is avoided.

It should be noted that in other embodiments of the present application, the porous medium 121 may have other shapes, such as a circular plate, a semicircular plate, or other irregular-shaped plate.

In the embodiment of the present application, the number of the porous media 121 in the combustion assembly 120 may be one or more, and the number of the first cooling pipes 122 may be one or more.

The combustor 100 may include only one porous medium 121, or may also include two, three, or more porous media 121.

Accordingly, in other embodiments of the present application, the number of the first cooling pipes 122 may be one, for example, the first cooling pipes 122 are arranged in a plurality of S-shaped bends, the porous medium 121 is connected to the first cooling pipes 122, and the channel 123 is located between two bent sections of the first cooling pipes 122. Alternatively, in some embodiments, the number of the first cooling pipes 122 is plural, and the four sidewalls of the channel 123 may be all the first cooling pipes 122.

In the embodiment of the present application, the cooling medium in the first cooling pipe 122 is water, and the first cooling pipe 122 is a square pipe, and the square pipe is connected to the porous medium 121 around the porous medium 121.

It should be noted that in other embodiments of the present application, the cooling medium in the first cooling pipe 122 may be other liquid, such as other heat transfer medium, for example, oil.

Alternatively, in other embodiments of the present application, the first cooling pipe 122 may be a pipe having another shape, such as a circular pipe.

The channel 123 is used to pass a portion of the fuel gas, and in some embodiments of the present disclosure, the width of the channel 123 is 0.5-1.5mm, such as 0.5mm, 1mm, 1.2mm, 1.5mm, and so on.

In the present embodiment, the width of the passage 123 refers to the width of the passage 123 in the direction perpendicular to the direction in which the gas enters the combustion chamber 130.

The width of the channel 123 is 0.5-1.5mm, which can prevent unstable combustion caused by too large width of the part of the natural gas entering the combustion chamber 130 through the channel 123, and if the width is large, more gas enters the combustion chamber through the channel 123, resulting in less part of the flameless combustion through the porous medium 121, which is not favorable for stable combustion.

In addition, the first cooling pipes 122 are arranged on two sides of the channel 123 to cool the air inlet chamber 110, so that the tempering after the temperature in the air inlet chamber 110 is too high and reaches a fire point is avoided.

In summary, a part of the gas in the gas inlet chamber 110 is flameless combusted through the porous medium 121, and a part of the gas enters the combustion chamber 130 through the passage 123 to be combusted. Two combustion states are formed in the whole combustion chamber, the resistance of the part of gas entering the combustion chamber 130 through the channel 123 for combustion is small, instability caused by large load can be avoided, the combustion resistance is reduced, rapid combustion drives flameless combustion through the porous medium 121 at the same time, flameless combustion through the porous medium 121 is stable, and the problem that the part of gas entering the combustion chamber 130 through the channel 123 for combustion is unstable is solved.

In the embodiment of the present application, the second cooling pipe 131 is disposed in the combustion chamber 130, the second cooling pipe 131 is installed in the combustion chamber 130, and after the combustion gas is combusted in the combustion chamber 130, the temperature in the combustion chamber 130 can be reduced through the second cooling pipe 131, so as to reduce the emission of nitrogen oxides.

In the embodiment of the present application, the second cooling tubes 131 are disposed in the combustion chamber 130 in a plurality of tube array arrangements, so as to increase the heat exchange area between the second cooling tubes 131 and the gas in the combustion chamber 130, and increase the heat exchange effect of the second cooling tubes 131.

In other embodiments of the present application, the arrangement of the second cooling pipe 131 in the combustion chamber 130 may be other, and the present application does not limit the arrangement thereof.

In the embodiment of the present application, the cooling medium in the second cooling pipe 131 is water, and in other embodiments, the cooling medium in the second cooling pipe 131 may be oil, a water-oil mixture, or other heat exchange medium. The second cooling pipe 131 is a circular pipe, and in other embodiments, the second cooling pipe 131 may be a square pipe or the like.

In the embodiment of the present application, the second cooling pipe 131 is located above the combustion chamber 130 of the passage 123, in other words, in the extending direction of the passage 123, the second cooling pipe 131 is located in the extending direction of the passage 123 within the combustion chamber 130. The second cooling pipe 131 intersects with the extending direction of the passage 123.

The combustion gas enters the combustion chamber 130 through the passage 123 and then is combusted, the second cooling pipe 131 is located in the extending direction of the passage 123 in the combustion chamber 130, and the second cooling pipe 131 can cool the flame which enters the combustion chamber 130 through the passage 123.

In this embodiment, the second cooling pipe 131 is spaced apart from the passage 123 such that the flame burning through the passage 123 into the combustion chamber 130 can contact the second cooling pipe 131, and the temperature of the flame is reduced to reduce the amount of discharged nitrogen oxides.

In some embodiments of the present application, the second cooling pipe 131 is not necessary, and the second cooling pipe 131 may not be provided in the combustion chamber 130.

Further, in other embodiments of the present application, the second cooling pipe 131 may have other positions in the combustion chamber 130, and is not limited to being located in the extending direction of the channel 123.

In the present embodiment, a flame detector 132 is provided in the combustion chamber 130, and the flame detector 132 is used to detect the combustion condition in the combustion chamber 130.

In the embodiment of the present application, the inlet chamber 110 is provided with a porous plate 111, the porous plate 111 is installed in the inlet chamber 110, and the porous plate 111 is provided with a plurality of air distribution holes extending toward the combustion chamber 130, in other words, the air distribution holes in the porous plate 111 can supply the combustion gas to move in a direction toward the combustion chamber 130.

The air distribution holes are distributed in the porous plate 111, and the air distribution holes have the function of distributing fuel gas, so that the fuel gas can be fully combusted in the combustion chamber 130.

In the present embodiment, the porous plate 111 is a porous ceramic fiber plate, and in other embodiments of the present application, the porous plate 111 may be made of other materials. Alternatively, in other embodiments of the present application, the porous plate 111 may not be provided.

In the present application, the intake chamber 110 and the combustion chamber 130 are integrally provided. The intake chamber 110 and the combustion chamber 130 are separated by the combustion assembly 120. In the present application, the intake chamber 110 and the combustion chamber 130 are jacketed with a cooling assembly 140; the cooling assembly 140 may cool the intake chamber 110 and the combustion chamber 130.

In the present application, the cooling assembly 140 is a water jacket; the cooling module 140 includes a housing sleeved outside the air intake chamber 110 and the combustion chamber 130, a cavity for cooling water to flow through is disposed between the housing and the air intake chamber 110 and the combustion chamber 130, and a water inlet and a water outlet are disposed on the housing and are communicated with the cavity. In the present embodiment, the first cooling pipe 122 is communicated with the cooling module 140, so that the cooling medium in the first cooling pipe 122 and the cooling medium in the cooling module 140 can be exchanged with each other; in other embodiments of the present application, the first cooling tube 122 and the cooling assembly 140 may be independent of each other.

The cooling unit 140 reduces the temperature of the periphery of the intake chamber 110 and the combustion chamber 130, thereby preventing a fire or the like from occurring around the intake chamber 110 and the combustion chamber 130 due to a high temperature.

It should be noted that, in other embodiments of the present application, the temperature reducing medium in the cooling module 140 is not limited to water, and oil or a mixture of water and oil may be used.

The cooling unit 140 is not limited to the above-described structure and arrangement, and the cooling unit 140 may be arranged in an air heat exchange manner or the like.

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

the utility model provides a combustor 100 gathers porous medium burning and two kinds of combustion methods of water-cooling premix burning, passageway 123 between two adjacent first cooling tubes 122 supplies partial gas to pass through, and the gas of this part can reduce combustor 100's combustion resistance, makes the gas get into combustion state fast, and first cooling tube 122 can avoid the intake chamber 110 temperature higher and avoid taking place the tempering. The combustion of the porous media 121 results in a more stable overall combustion and a more uniform temperature across the combustion region of the combustion assembly 120.

The present application provides a combustor 100 having a relatively large load ratio, which may be greater than 1: 5.

Example 2

Fig. 3 shows a schematic structural diagram of a combustion apparatus 200 provided in embodiment 2 of the present application, please refer to fig. 1, fig. 2, and fig. 3, and the present application further provides a combustion apparatus 200, where the combustion apparatus 200 includes a gas mixing chamber 210 and the above-mentioned combustor 100, and the combustor 100 refers to embodiment 1, which is not described again in this embodiment. The gas mixing chamber 210 communicates with the intake chamber 110 of the burner 100.

The gas mixing chamber 210 is mainly used for mixing fuel gas and combustion-supporting gas, in this embodiment, the combustion-supporting gas is air, and the combustion-supporting gas is introduced through a fan. It should be noted that in other embodiments of the present application, the oxidant gas may be oxygen.

The gas mixing chamber 210 is now mixed and then delivered to the burner 100 through the inlet chamber 110 for combustion, which facilitates the full combustion.

In the present embodiment, the combustion apparatus 200 is provided with an igniter. Accordingly, the combustion apparatus 200 of the present application has all the advantages of the combustor 100 described above.

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

1. A burner, characterized in that it comprises:

an air intake chamber;

a combustion chamber; and

2. The combustor as claimed in claim 1, wherein the combustion assembly comprises a plurality of said porous media arranged at intervals, each of said porous media is connected to said first cooling pipe on both sides thereof, and at least one of said passages is provided between two adjacent ones of said porous media.

3. The combustor of claim 2, wherein said combustion assembly includes a plurality of said first cooling tubes, one of said first cooling tubes being connected to each of two sides of one of said porous media.

4. A burner according to claim 1, wherein the combustion chamber is provided with a second cooling tube.

5. The burner of claim 4 wherein the second cooling tube is spaced from the passageway and is configured to allow a burning plume of gas passing through the passageway to contact the second cooling tube.

6. A burner according to any of claims 1 to 5, wherein the inlet chamber and the combustion chamber are jacketed with a cooling assembly.

7. Burner according to any of claims 1 to 5, wherein a perforated plate is arranged in the inlet chamber, said perforated plate being provided with a plurality of gas distribution holes, said holes extending towards the combustion chamber.

8. A burner according to any of claims 1 to 5, wherein the width of the channel is 0.5 to 1.5 mm.

9. A burner according to any of claims 1 to 5, wherein the combustion chamber is provided with a flame detector.

10. A combustion device, characterized in that it comprises a gas mixing chamber for mixing a fuel gas and an oxidant gas, said gas mixing chamber being in communication with said inlet chamber, and a burner according to any one of claims 1 to 9.