CN215411881U

CN215411881U - Low carbon swirl burner with flexible and adjustable flame diameter

Info

Publication number: CN215411881U
Application number: CN202121429080.4U
Authority: CN
Inventors: 李水清; 宋民航; 黄骞; 杨远平; 卫吉丽; 张易阳
Original assignee: Tsinghua University
Current assignee: Tsinghua University
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2022-01-04
Anticipated expiration: 2031-06-25

Abstract

The utility model relates to a low-carbon cyclone burner with flexibly adjustable flame diameter, which comprises: the combustion stabilizing structure comprises an air chamber shell and a hollow combustion stabilizing body, wherein the combustion stabilizing body is provided with a hollow combustion stabilizing chamber, an inner tangent air flow channel and an outer tangent air flow channel; a tangential gas flow structure comprising a tangential gas flow tube, a gas flow baffle, a tangential adjustment assembly capable of adjusting the gas flow baffle to block the inner tangential gas flow channel, the outer tangential gas flow channel, or to be removed from the peripheral sides of the inner and outer tangential gas flow channels; and the axial airflow structure comprises an axial airflow pipe, a reducing valve component and an axial adjusting component, wherein the reducing valve component is arranged in the axial airflow pipe and is used for adjusting the airflow circulation area of the axial airflow output by the axial airflow pipe, so that the flexible adjustment of the diameter of the outside swirling flame and the diameter of the inside axial direct-current flame is realized.

Description

Low-carbon cyclone burner with flexibly adjustable flame diameter

Technical Field

The utility model relates to the technical field of burner equipment, in particular to a low-carbon cyclone burner with flexibly adjustable flame diameter.

Background

Under the background demand of carbon neutralization in China and in the world, the improvement of the utilization rate of non-fossil energy is imperative. Among them, the ammonia fuel has outstanding advantages in carbon emission reduction because the ammonia fuel does not contain carbon element. The ammonia fuel has the properties of high heat value and high octane value, and combustion products only contain nitrogen and water, so that pollution-free recycling can be realized, and the ammonia fuel is a clean fuel. However, the problem of poor ignitability of ammonia exists, the spontaneous combustion temperature and the minimum ignition energy of ammonia are high, and the ammonia is difficult to realize independent combustion as fuel under the actual condition, so that how to realize the ignition of ammonia gas and enhance the combustion stability is a difficult problem in the existing ammonia gas combustion technology.

Aiming at the problems of difficult ignition and poor combustion stability of ammonia fuel, combustible gas or pulverized coal and the like are often adopted for mixed combustion supporting, but the overall proportion of the ammonia fuel is still low, the problems of difficult ignition and poor combustion stability are easy to occur under the condition of large-proportion mixed combustion of the ammonia fuel, and the flexible adjustment of the combustion characteristics in the ammonia combustion process is insufficient, so that the requirements of rapid preheating, ignition and stable combustion of the ammonia fuel cannot be met.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide a low-carbon cyclone burner with flexibly adjustable flame diameter, which can realize flexible adjustment, aiming at the problem that the flexible adjustment of the combustion characteristics in the ammonia combustion process is insufficient.

A low-carbon cyclone burner with flexibly adjustable flame diameter comprises:

the combustion stabilizing structure comprises an air chamber shell and a hollow combustion stabilizing body, wherein the combustion stabilizing body is arranged in the air chamber shell and is provided with a hollow combustion stabilizing chamber, an inner tangent air flow channel and an outer tangent air flow channel which are communicated with the air chamber shell and the combustion stabilizing chamber;

the tangential airflow structure comprises a tangential airflow pipe, an airflow baffle and a tangential adjusting assembly, the tangential airflow pipe is arranged in the air chamber shell along the radial direction and is communicated with the air chamber shell, the airflow baffle is connected with the tangential adjusting assembly and is positioned on the peripheral side of the combustion stabilizing body, and the tangential adjusting assembly can adjust the airflow baffle to shield the inner tangential airflow channel, the outer tangential airflow channel or remove the airflow baffle from the peripheral side of the inner tangential airflow channel and the outer tangential airflow channel; and

the axial airflow structure comprises an axial airflow pipe, a reducing valve assembly and an axial adjusting assembly, wherein the axial airflow pipe is axially arranged in the air chamber shell and extends into the combustion stabilizing chamber, the reducing valve assembly is arranged in the axial airflow pipe and is used for adjusting the airflow circulation area of axial airflow output by the axial airflow pipe, and the axial adjusting assembly is connected with the reducing valve assembly and is used for driving the reducing valve assembly to move.

In one embodiment, the combustion stabilizing body comprises a plurality of combustion stabilizing forming bodies and a plurality of separation blocks, the plurality of combustion stabilizing forming bodies are arranged in the combustion stabilizing chamber in an enclosing mode at intervals, the separation blocks are arranged between every two adjacent combustion stabilizing forming bodies, the two combustion stabilizing forming bodies and the separation blocks are arranged in an enclosing mode to form the inner tangential air flow channel and the outer tangential air flow channel, and each inner tangential air flow channel corresponds to one air flow baffle.

In one embodiment, an outer tangential airflow flaring is arranged at the airflow inlet of the inner tangential airflow channel, an inner tangential airflow flaring is arranged at the airflow inlet of the outer tangential airflow channel, and the cross section of the inner tangential airflow flaring and the cross section of the outer tangential airflow flaring are arranged in a triangular shape.

In one embodiment, the tangential adjustment assembly comprises a hollow air adjusting disc and an air volume ratio adjusting rod, the air adjusting disc is arranged in the air chamber shell, is sleeved on the axial airflow pipe and is positioned below the combustion stabilizing chamber, a plurality of airflow baffles are respectively vertically arranged on the air adjusting disc along the circumferential direction and are arranged corresponding to a plurality of internal airflow channels or a plurality of external airflow channels, the cross sections of the airflow baffles are arranged in an arc shape, the air volume ratio adjusting rod is vertically arranged on the air adjusting disc and extends out through the air chamber shell, and the air volume ratio adjusting rod can drive the air adjusting disc and the airflow baffles thereon to rotate around the axial airflow pipe when rotating;

the cross section arc length of the airflow baffle is less than or equal to the maximum circumferential dimension of the outer side of the separation block, and the cross section arc length of the airflow baffle is greater than or equal to the maximum circumferential dimension of the outer side of each of the outer tangential airflow flaring and the inner tangential airflow flaring;

the tangential adjusting component also comprises a sliding positioning piece which is in a ring shape, is adjacent to the air adjusting plate and is respectively arranged at two sides of the air adjusting plate and used for positioning the air adjusting plate.

In one embodiment, each of the inner and outer tangential flow channels is a set of flow channels, a plurality of sets of the flow channels are uniformly arranged on the peripheral side of the combustion chamber, and the inner tangential flow channel and the corresponding outer tangential flow channel form an included angle, the direction of the tangential flow conveyed by the outer tangential flow channel in the combustion chamber is tangential to the outer area of the axial flow pipe, and the direction of the tangential flow conveyed by the inner tangential flow channel in the combustion chamber can intersect with the inner area of the axial flow pipe;

when the airflow baffle closes each inner tangential airflow channel and opens each outer tangential airflow channel, the tangential rotating jet with the maximum diameter can be constructed;

the smallest diameter tangential rotating jet can be incorporated when the airflow baffle opens each of the inner tangential airflow channels and closes each of the outer tangential airflow channels.

In one embodiment, the combustion stabilizing chamber is arranged in a square shape, and the number of the inner tangent airflow channels and the number of the outer tangent airflow channels are four and are arranged at four corners of the combustion stabilizing chamber;

the tangential airflow injection included angle alpha of the inner tangent airflow channel and the tangential airflow injection included angle beta of the outer tangent airflow channel need to satisfy the condition that alpha/(90-beta) is more than or equal to 1.2.

In one embodiment, the tangential air flow structure further comprises a positioning bolt arranged at the bottom of the air chamber shell, one end of the positioning bolt penetrates through the air chamber shell and abuts against the air adjusting disc, and the air adjusting disc can be fixed or loosened when the positioning bolt is screwed in;

the low-carbon cyclone burner with the flexibly adjustable flame diameter further comprises a partition plate, the partition plate is arranged in the air chamber shell and divides an inner cavity of the air chamber shell into a plurality of air dividing chambers, and each air dividing chamber corresponds to one group of the inner tangential air flow channels and the outer tangential air flow channels.

In one of them embodiment, axial adjusting part includes the adjusting disk, the reducing valve subassembly includes blade base, a plurality of valve blade, a plurality of guide post and a plurality of location pivot, and a plurality of valve blade evenly set up along the circumferencial direction blade base, and each the one end of valve blade is through corresponding the rotatable setting of location pivot is in on the blade base, the adjusting disk with blade base axial interval sets up, a plurality of guide ways are seted up to the adjusting disk, the guide post install in valve blade to install in corresponding in the guide way, the adjusting disk with axial adjusting part connects, when the adjusting disk rotates, can pass through the guide way with the cooperation drive of guide post the valve blade winds the location pivot rotates.

In one embodiment, the axial adjustment assembly further comprises an inner diameter adjustment rod connected with the adjustment disk and extending out of the axial airflow tube in a radial direction;

the axial adjusting assembly further comprises an axial mounting shell, the axial mounting shell is arranged on the periphery of the axial airflow pipe, and the inner diameter adjusting rod penetrates through the axial mounting shell to extend out;

the axial adjustment assembly further comprises an inner diameter adjustment sealing sheet, and the inner diameter adjustment sealing sheet is arranged in the axial installation shell and connected with the inner diameter adjustment rod.

In one embodiment, the axial airflow pipe comprises an axial round pipe, a mounting pipe and an axial air pipe which are connected in sequence, one end of the axial round pipe extends into the combustion stabilizing body and is flush with the end surface of the inner wall of the combustion stabilizing chamber, the mounting pipe protrudes out of the axial round pipe along the radial direction, the reducing valve component and the axial adjusting component are mounted in the mounting pipe, and the axial air pipe is used for conveying axial airflow;

a porous pipe system is arranged in the axial round pipe, comprises a plurality of cylindrical pipes and is processed by heat storage type ceramic materials;

or a direct current sleeve is arranged in the axial round pipe and comprises a plurality of coaxially sleeved cylindrical pipes.

After the technical scheme is adopted, the utility model at least has the following technical effects:

when the low-carbon cyclone burner with the flexibly adjustable flame diameter works, tangential airflow enters the inner tangential airflow channel and the outer tangential airflow channel of the combustion stabilizing body through the tangential airflow pipe and the air chamber shell and further enters the combustion stabilizing chamber, axial airflow enters the combustion stabilizing chamber through the axial airflow pipe, and the axial airflow and the tangential airflow are mixed and then injected in the combustion stabilizing chamber, so that the rapid temperature rise, ignition and combustion stabilization of combustible gas are realized. And the tangential adjusting structure drives the reducing valve component to move, the airflow circulation area of the axial airflow output by the axial airflow pipe can be adjusted, the axial airflow is flexibly adjusted, and the flexible adjustment of the diameter of the swirling flame is realized. The low-carbon cyclone burner with the flexibly adjustable flame diameter can adjust the flow of tangential airflow and axial airflow entering a combustion stabilizing chamber through the tangential adjusting assembly and the axial adjusting assembly, can flexibly adjust and match the diameter of the outer-side cyclone flame and the diameter of the inner-side axial direct-current flame, and is suitable for rapid temperature rise, ignition and stable combustion under the conditions of different types of combustible gases and component concentrations.

Drawings

FIG. 1 is a top cross-sectional view of a low carbon swirl burner with a flexibly adjustable flame diameter according to an embodiment of the utility model;

FIG. 2 is a cross-sectional view at A-A of the flexibly flame diameter adjustable low carbon swirl burner of FIG. 1;

FIG. 3 is a schematic view of the diameter-reducing valve assembly and the inner diameter adjusting rod in the low-carbon cyclone burner with the flexibly adjustable flame diameter shown in FIG. 2, as seen from a surface;

FIG. 4 is a schematic view of the variable diameter valve assembly of FIG. 3 from another surface with the valve vanes closed;

FIG. 5 is a schematic view of the valve assembly of FIG. 4 with the valve vanes open;

FIG. 6 is a perspective view of another embodiment of the low carbon swirl burner of FIG. 1 with a flexibly adjustable flame diameter;

FIG. 7 is a schematic view of the tangential airflow flow of the low carbon swirl burner of FIG. 1 with flexibly adjustable flame diameter;

FIG. 8 is a schematic view of the flow of the air stream at the maximum swirl radius generated by the low carbon swirl burner with flexibly adjustable flame diameter shown in FIG. 1;

FIG. 9 is a schematic view of the flow of the air stream at the minimum swirl radius generated by the low carbon swirl burner with flexibly adjustable flame diameter shown in FIG. 1;

FIG. 10 is a schematic view of a swirling flame produced in the flexibly flame diameter adjustable low carbon swirling burner of FIG. 1;

FIG. 11 shows the structural positions of main parameters in the low-carbon cyclone burner with the flexibly adjustable flame diameter shown in FIG. 1.

Wherein: 100. the flame diameter is flexible and adjustable; 110. a stable combustion structure; 111. an air chamber housing; 112. a stable combustion body; 1121. an outer circum-flow channel; 1122. an inner tangential air flow channel; 1123. a stable combustion forming body; 1124. a separation block; 1125. flaring by external tangential airflow; 1126. flaring by internal tangential airflow; 1127. a stable combustion chamber; 120. a tangential airflow configuration; 113. a partition plate; 1131. an air dividing chamber; 121. a tangential gas flow tube; 122. an airflow baffle; 123. a tangential adjustment assembly; 1231. a wind adjusting plate; 1232. an air volume ratio adjusting rod; 1233. sliding the positioning sheet; 1234. tangentially mounting the shell; 1235. the air quantity ratio adjusting sealing sheet; 124. positioning the bolt; 130. an axial airflow structure; 131. an axial airflow duct; 1311. an axial circular tube; 1312. installing a pipe; 1313. an axial air pipe; 132. a variable diameter valve assembly; 1321. a blade base; 1322. a valve blade; 1323. a guide post; 1324. positioning the rotating shaft; 133. an axial adjustment assembly; 1331. an adjusting disk; 13311. a guide groove; 1332. an inner diameter adjusting rod; 1333. axially mounting the housing; 1334. an inner diameter adjusting sealing sheet; 134. a porous piping system; 135. and (4) a direct current sleeve.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1, 2 and 10, the present invention provides a low carbon swirl burner 100 with a flexibly adjustable flame diameter. The low-carbon cyclone burner 100 with the flexibly adjustable flame diameter can flexibly adjust the flame diameter, has the characteristic of flexibly adjusting the cyclone flame diameter and the combustion characteristic, and improves the rapid heating, firing and stable combustion performance under the working condition of large-flow proportion of combustible gas. It is understood that the combustible gas is ammonia gas, and in other embodiments of the utility model, the combustible gas can be other gases that can be combusted in a low carbon burner.

The low-carbon cyclone burner 100 with the flexibly adjustable flame diameter can flexibly adjust and match the outer cyclone flame diameter and the inner axial direct-current flame diameter so as to promote rapid temperature rise, ignition and stable combustion under the conditions of different types of combustible gases and component concentrations. The structure of the low-carbon cyclone burner 100 with flexibly adjustable flame diameter is described in detail below.

Referring to fig. 1, 2 and 10, in one embodiment, the low carbon swirl burner 100 with flexibly adjustable flame diameter includes a combustion stabilizing structure 110, a tangential airflow structure 120, and an axial airflow structure 130. The combustion stabilizing structure 110 includes an air chamber housing 111, a hollow combustion stabilizing body 112, the combustion stabilizing body 112 is disposed in the air chamber housing 111, and the combustion stabilizing body 112 has a hollow combustion stabilizing chamber 1127, an inner directional air flow channel 1122 and an outer directional air flow channel 1121 for communicating the air chamber housing 111 and the combustion stabilizing chamber 1127. The tangential airflow structure 120 includes a tangential airflow pipe 121, an airflow baffle 122, and a tangential adjustment assembly 123, the tangential airflow pipe 121 is disposed radially in the plenum housing 111 and is communicated with the plenum housing 111, the airflow baffle 122 is connected with the tangential adjustment assembly 123 and is located on the peripheral side of the combustion stabilizing body 112, and the tangential adjustment assembly 123 can adjust the airflow baffle 122 to shield the inner tangential airflow channel 1122, the outer tangential airflow channel 1121, or to be removed from the peripheral sides of the inner tangential airflow channel 1122 and the outer tangential airflow channel 1121. The axial airflow structure 130 includes an axial airflow pipe 131, a variable diameter valve assembly 132 and an axial adjustment assembly 133, the axial airflow pipe 131 is axially disposed in the plenum housing 111 and extends into the combustion stabilizing chamber 1127, the variable diameter valve assembly 132 is disposed in the axial airflow pipe 131 for adjusting an airflow flow area of the axial airflow output by the axial airflow pipe 131, and the axial adjustment assembly 133 is connected to the variable diameter valve assembly 132 for driving the variable diameter valve assembly 132 to move.

The stable combustion structure 110 is a main body structure of the low-carbon cyclone burner 100 with the flame diameter flexibly adjustable. The outer portion of the combustion stabilizing structure 110 is cylindrically arranged, the tangential airflow structure 120 is arranged on the periphery of the combustion stabilizing structure 110 along the tangential direction, and the tangential airflow structure 120 is used for conveying tangential airflow into the combustion stabilizing structure 110. The axial airflow structure 130 is disposed at one end of the combustion stabilizing structure 110 along the axial direction, and is used for conveying an axial airflow into the combustion stabilizing structure 110. The tangential airflow and the axial airflow form rotational flow airflow in the combustion stabilizing structure 110 and are output, so that the combustible gas can be ignited and combusted conveniently.

Specifically, the combustion stabilizing structure 110 includes a plenum housing 111 and a combustion stabilizing body 112, and the combustion stabilizing body 112 is disposed in the plenum housing 111. A passage for tangential gas flow is formed between the inner wall of the plenum housing 111 and the outer wall of the combustion stabilizing body 112. That is, the plenum housing 111 is formed in a ring shape as a whole, is fitted over the outer side of the combustion stabilizing body 112, and is ventilated to the respective inner and outer circumferential

air flow passages

1122 and 1121 through the passage of the plenum housing 111. The inner part of the combustion stabilizing body 112 is provided with a hollow combustion stabilizing chamber 1127, and the outer wall of the combustion stabilizing body 112 is also provided with an inner tangent airflow channel 1122 and an outer tangent airflow channel 1121.

The inner tangent airflow channel 1122 and the outer tangent airflow channel 1121 are arranged to penetrate through the flame stabilizing body 112, and the tangential airflow in the channels enters the flame stabilizing chamber 1127 through the inner tangent airflow channel 1122 and the outer tangent airflow channel 1121 respectively. Further, the number of the inner tangential air flow channels 1122 is plural and equal to the number of the outer tangential air flow channels 1121, each inner tangential air flow channel 1122 is disposed adjacent to the outer tangential air flow channel 1121, and the plural inner tangential air flow channels 1122 are disposed at intervals in the axial direction of the flame stabilizer 112. Therefore, the tangential airflow can be ensured to form rotational flow airflow after entering the stable combustion chamber 1127, and the swirling effect is ensured.

The tangential airflow structure 120 is disposed on the circumferential side of the plenum housing 111 in a tangential direction, and specifically, the tangential airflow pipe 121 is connected to the plenum housing 111 such that the inner cavity of the plenum housing 111 is communicated with the tangential airflow pipe 121. Thus, after the external tangential airflow enters the tangential airflow pipe 121, the tangential airflow enters the channel formed by the plenum housing 111 and the flame stabilizing body 112, and further enters the flame stabilizing chamber 1127 through the internal tangential airflow channel 1122 and the external tangential airflow channel 1121.

Further, a tangential adjustment assembly 123 is provided in the tangential airflow duct 121, and an airflow baffle 122 is added, the airflow baffle 122 being provided corresponding to the inner tangential airflow channel 1122 or the outer tangential airflow channel 1121. When the tangential adjustment assembly 123 rotates, the airflow baffle 122 can be driven to rotate synchronously, so that the airflow baffle 122 shields the inner tangent airflow channel 1122 or the outer tangent airflow channel 1121. When the airflow baffle 122 at least partially obstructs the inner tangential airflow channel 1122, a tangential airflow can enter the flame stabilizing chamber 1127 through the outer tangential airflow channel 1121, at which point a tangential rotating jet of maximum diameter can be constructed. When the airflow baffle 122 at least partially obstructs the outer airflow passageway, a tangential rotating jet of minimal diameter can be created.

The axial air flow structure 130 is axially disposed at one end of the combustion stabilizing body 112, as shown in fig. 2, in this embodiment, the axial air flow structure 130 is located below the combustion stabilizing body 112, and the axial air flow structure 130 is communicated with the combustion stabilizing chamber 1127 to deliver axial air flow into the combustion stabilizing chamber 1127. Specifically, the axial gas flow structure 130 includes an axial gas flow tube 131, a variable diameter valve assembly 132, and an axial adjustment assembly 133. An axial gas flow tube 131 extends through the plenum housing 111 into the combustion stabilization chamber 1127 such that the axial gas flow tube 131 communicates with the combustion stabilization chamber 1127 for delivering an axial gas flow into the combustion stabilization chamber 1127.

Furthermore, a variable diameter valve assembly 132 is provided in the axial gas flow pipe 131, and is capable of adjusting a gas flow area of the axial gas flow pipe 131 for delivering the axial gas flow. When the flow area of the variable diameter valve assembly 132 is increased, the axial flow with a larger flow can be conveyed, and when the flow area of the variable diameter valve assembly 132 is decreased, the axial flow with a smaller flow can be conveyed. Moreover, the variable diameter valve assembly 132 is connected to the axial adjustment assembly 133, and the axial adjustment assembly 133 can drive the variable diameter valve assembly 132 to move synchronously when moving, so as to adjust the airflow area of the axial airflow pipe 131.

When the low-carbon cyclone burner 100 with the flexibly adjustable flame diameter works, tangential airflow enters the inner tangential airflow channel 1122 and the outer tangential airflow channel 1121 of the combustion stabilizing body 112 through the air chamber shell 111 through the tangential airflow pipe 121 and further enters the combustion stabilizing chamber 1127, axial airflow enters the combustion stabilizing chamber 1127 through the axial airflow pipe 131, and the axial airflow and the tangential airflow are mixed and then injected in the combustion stabilizing chamber 1127, so that the rapid temperature rise, ignition and combustion stabilization of combustible gas are realized.

Moreover, the tangential adjustment assembly 123 drives the airflow baffle 122 to move, so that the internal tangent airflow channel 1122 or the external tangent airflow channel 1121 can be selectively shielded, the purpose of adjusting the airflow ratio between the internal tangent airflow and the external tangent airflow is achieved, the mutual injection effect of the external tangent airflow and the internal tangent airflow is changed, and the jet flow incidence angle is changed; the axial adjusting component 133 drives the reducing valve component 132 to move, the airflow circulation area of the axial airflow output by the axial airflow pipe 131 can be adjusted, the axial airflow can be flexibly adjusted, and the diameter of the swirl flame can be flexibly adjusted.

The low-carbon cyclone burner 100 with the flexibly adjustable flame diameter in the above embodiment adjusts the flow rates of the tangential airflow and the axial airflow entering the combustion stabilizing chamber 1127 through the tangential adjusting assembly 123 and the axial adjusting assembly 133, and can flexibly adjust and match the outer cyclone flame diameter and the inner axial direct-current flame diameter to adapt to rapid temperature rise, ignition and stable combustion under the conditions of different types of combustible gases and component concentrations.

Referring to fig. 1, 2 and 10, in an embodiment, the combustion stabilizing body 112 includes a plurality of combustion stabilizing formation bodies 1123 and a plurality of dividing blocks 1124, the plurality of combustion stabilizing formation bodies 1123 are spaced and enclosed to form a combustion stabilizing chamber 1127, the dividing blocks 1124 are disposed between two adjacent combustion stabilizing formation bodies 1123, two combustion stabilizing bodies 112 and the dividing blocks 1124 are enclosed to form an inner and an outer

lateral airflow channels

1122 and 1121, and each inner lateral airflow channel 1122 corresponds to one airflow baffle 122.

The plurality of combustion stabilizing formation bodies 1123 and the plurality of partition blocks 1124 are arranged in a ring shape in a spaced and surrounding manner to form a combustion stabilizing chamber 1127. The cross section of the outer wall of the plurality of combustion stabilizing forming bodies 1123 is arc-shaped, the cross section of the outer wall of the partition block 1124 is also arc-shaped, the combustion stabilizing forming bodies 1123 and the arc of the partition block 1124 are positioned on the same circumference, and the center of the circumference is positioned on the axis of the axial airflow pipe 131. Thus, the combustion stabilizing formation 1123 and the partition 1124 form the combustion stabilizing body 112 having a cylindrical outer wall.

One of the combustion stabilizing formations 1123 and one surface of the dividing block 1124 are circumscribed to the air flow channel 1122, and the other surface of the dividing block 1124 and the adjacent combustion stabilizing formation 1123 are circumscribed to the air flow channel 1121. The other inner tangential airflow channels 1122 are arranged in a similar manner to the outer tangential airflow channels 1121. Alternatively, the number of the inner tangential airflow channels 1122 is three or more, and the number of the outer tangential airflow channels 1121 is equal to the number of the inner tangential airflow channels 1122.

Referring to fig. 1, 2 and 10, in an embodiment, each inner tangential airflow channel 1122 and each outer tangential airflow channel 1121 form a set of airflow channels, a plurality of sets of airflow channels are uniformly disposed on the peripheral side of the flame stabilizing chamber 1127, the inner tangential airflow channel 1122 forms an included angle with the corresponding outer tangential airflow channel 1121, the direction in which the outer tangential airflow channel 1121 conveys the tangential airflow in the flame stabilizing chamber 1127 is tangential to the outer region of the axial airflow pipe 131, and the direction in which the inner tangential airflow channel 1122 conveys the tangential airflow in the flame stabilizing chamber 1127 can intersect with the inner region of the axial airflow pipe 131. When the airflow baffle 122 closes the inner tangential airflow channels 1122 and opens the outer tangential airflow channels 1121, a tangential rotating jet of maximum diameter can be constructed. When the airflow baffle 122 opens each inner tangential airflow channel 1122 and closes each outer tangential airflow channel 1121, a tangential rotating jet of the smallest diameter can be formed.

That is, the plurality of outer tangential air flow passages 1121 are uniformly distributed on the circumferential side of the flame stabilizing chamber 1127, and the plurality of inner tangential air flow passages 1122 are uniformly distributed on the circumferential side of the flame stabilizing chamber 1127, so that uniform distribution of tangential air flow can be ensured. Also, the distance from the outlet end of outer tangential air flow channel 1121 to axial air flow tube 131 is greater than the distance from the outlet end of inner tangential air flow channel 1122 to axial air flow tube 131. The outer tangential airflow channel 1121 can be tangential to the outer region of the axial airflow tube 131 after outputting a tangential airflow, as shown in fig. 8, and the inner tangential airflow channel 1122 can be tangential to the inner region of the axial airflow tube 131 after outputting a tangential airflow, as shown in fig. 9.

It will be appreciated that since the end of the axial gas flow tube 131 is flush with the end of the flame stabilization chamber 1127, i.e., there is no projecting axial gas flow tube 131 in the flame stabilization chamber 1127, the above-mentioned tangency or intersection with the inner or outer region of the axial gas flow tube 131 means tangency or intersection with the extension of the axial gas flow tube 131. Thus, the outer tangential airflow passage 1121 can form a larger-sized tangential swirling flow jet in the outer region of the extension line of the axial airflow pipe 131, and the inner tangential airflow passage 1122 can enter the inner region of the extension line of the axial airflow pipe 131 to form a smaller-sized tangential swirling flow jet.

After the outer and inner

tangential airflow channels

1121, 1122 are arranged in the above manner, an included angle exists between each inner tangential airflow channel 1122 and the corresponding outer tangential airflow channel 1121, so that two adjacent jets can be mixed to form one jet after being jetted for a certain distance. Based on the bernoulli principle, the mutual injection effect between two adjacent airflows can be changed by adjusting the airflow flow ratio of each adjacent outer tangential airflow channel 1121 to each inner tangential airflow channel 1122, so that the jet angle after the adjacent airflows are mixed is changed, and finally, the flexible adjustment of the radius of the rotating jet formed in the central area of the combustion stabilizing chamber 1127 is realized.

Referring to fig. 7 to 9, specifically, when the tangential adjusting assembly is operated to move in a direction, the tangential adjusting member can drive the airflow baffle 122 to move, so that the airflow baffle 122 closes each inner tangential airflow channel 1122 and opens each outer tangential airflow channel 1121, and at this time, the tangential airflow enters the combustion stabilizing chamber 1127 from the outer tangential airflow channel 1121, and a tangential rotating jet with a maximum diameter can be constructed. When the tangential adjusting component is adjusted to move towards the other direction, the tangential adjusting component can drive the airflow baffle 122 to move, so that the airflow baffle 122 opens each inner tangential airflow channel 1122 and closes each outer tangential airflow channel 1121, at the moment, tangential airflow enters the combustion stabilizing chamber 1127 from the inner tangential airflow channel 1122, and tangential rotating jet flow with the minimum diameter can be constructed.

Referring to fig. 1, 2 and 10, in the present embodiment, the combustion stabilizing chamber 1127 is disposed in a square shape, and the number of the inner tangent airflow channel 1122 and the outer tangent airflow channel 1121 is four, and the combustion stabilizing chamber 1127 is disposed at four corners. The outer periphery of the flame stabilizing body 112 is arranged in a cylindrical shape, the inner flame stabilizing chamber 1127 is arranged in a square shape, one of the inner tangent airflow channel 1122 and the outer tangent airflow channel 1121 are arranged at one corner of the square flame stabilizing chamber 1127, and the other inner tangent airflow channels 1122 and the outer tangent circulation channels are arranged in the same manner. The inner and outer

circumferential airflow channels

1122, 1121 are separated by a separation block 1124. Of course, the shape of the flame stabilizing chamber 1127 may also be circular, etc. in other embodiments of the utility model. Also, the number of the inner and outer lateral

air flow passages

1122, 1121 is not particularly limited to four, and may be three or more.

As shown in fig. 11, the main structural parameters of the low-carbon swirling burner 100 with the flame diameter flexibly adjustable are described. The included angle alpha of the tangential airflow injection in the internal airflow channel 1122 and the included angle beta of the tangential airflow injection outside the external airflow channel 1121 are recorded, and the side length of the combustion stabilizing chamber 1127 is A. The tangential air jet included angle α of the inner tangential air flow channel 1122 and the tangential air jet included angle β of the outer tangential air flow channel 1121 are such that α/(90 ° - β) is greater than or equal to 1.2. Thus, the air flow ejected from the outer and inner tangential

air flow channels

1121, 1122 can be configured to form a high-speed rotating jet in the combustion chamber 1127. Moreover, when simultaneously closing each inner tangential airflow channel 1122 and opening each outer tangential airflow channel 1121, it is possible to construct a tangential swirl jet having a maximum diameter of 2 ((0.5A-h) tan β -0.5A) cos β; when simultaneously opening each inner tangential airflow channel 1122 and closing each outer tangential airflow channel 1121, a tangential rotating jet of a minimum diameter of 2 (0.5A- (a-m-0.5 Acot α)) sin α can be constructed.

Referring to FIG. 1, in one embodiment, an outer tangential airflow flare 1125 is provided at the airflow inlet of the inner tangential airflow passage 1122, an inner tangential airflow flare 1126 is provided at the airflow inlet of the outer tangential airflow passage 1121, and the inner tangential airflow flare 1126 is triangularly shaped in cross-section with the outer tangential airflow flare 1125.

The entrance to the inner tangential airflow channel 1122 is a flared structure, i.e., an inner tangential airflow flare 1126 is provided. The inner tangential airflow flare 1126 may increase the area at the entrance of the inner tangential airflow channel 1122 to facilitate tangential airflow into the inner tangential airflow channel 1122. The inlet of the outer tangent airflow channel 1121 is a flared structure, i.e., an outer tangent airflow flare 1125 is provided. The outer tangential airflow flared end 1125 may increase the area at the entrance of the outer tangential airflow channel 1121 to facilitate tangential airflow into the outer tangential airflow channel 1121. Moreover, the inner and

outer airflow flares

1126, 1125 are triangular in cross-section to facilitate tangential airflow. Optionally, the inner facing airflow flare 1126 is oriented opposite the outer facing airflow flare 1125.

The cross section of the flame stabilizing chamber 1127 in the above embodiment is square, and an outer tangent airflow channel 1121 and an inner tangent airflow channel 1122 are respectively arranged at both ends of any edge of the flame stabilizing chamber 1127. The outer tangential airflow channel 1121 and the inner tangential airflow channel 1122 are used to inject tangential airflow. Wherein A is the side length of the square stable combustion chamber 1127, m is the spraying position of the air flow jetted from the inner tangent air flow channel 1122, n is the spraying position of the air flow jetted from the outer tangent air flow channel 1121, alpha is the spraying included angle of the air flow jetted from the inner tangent air flow channel 1122, beta is the spraying included angle of the air flow jetted from the outer tangent air flow channel 1121, and r is the rotational flow diameter adjusting range. The corresponding r value lies between (0.5A- (A-m-0.5 Acot. alpha.)) sin alpha and ((0.5A-h) tan. beta. -0.5A) cos. beta.

Referring to fig. 2, in an embodiment, the axial airflow pipe 131 includes an axial circular pipe 1311, a mounting pipe 1312, and an axial air pipe 1313, which are connected in sequence, one end of the axial circular pipe 1311 extends into the combustion stabilizing body 112 and is flush with an end surface of an inner wall of the combustion stabilizing chamber 1127, the mounting pipe 1312 protrudes from the axial circular pipe 1311 in the radial direction, the reducing valve assembly 132 and the axial adjustment assembly 133 are mounted in the mounting pipe 1312, and the axial air pipe 1313 is used for conveying axial airflow.

The axial circular tube 1311 is a portion of the axial gas flow tube 131 extending into the combustion stabilizing body 112, and the axial gas flow is delivered into the combustion stabilizing body 112 through the axial circular tube 1311. One end of the mounting pipe 1312 is connected with the axial circular pipe 1311, the other end of the mounting pipe 1312 is provided with the axial air pipe 1313, and the axial air pipe 1313 can convey outside axial air flow. The external axial air flows through the installation pipe 1312 and the axial circular pipe 1311 and enters the combustion stabilizing chamber 1127. The axial circular tube 1311 is disposed in a cylindrical shape in the central region of the flame stabilizing chamber 1127, and has one end flush with the wall surface of the flame stabilizing chamber 1127.

The mounting pipe 1312 is provided with a variable diameter valve assembly 132 and an axial adjusting assembly 133, and when the axial adjusting assembly 133 rotates, the variable diameter valve assembly 132 can be driven to adjust the air flow area. Specifically, when the axial adjustment assembly 133 rotates in one direction, the variable diameter valve assembly 132 can increase the airflow flowing area; the variable diameter valve assembly 132 reduces the airflow area when the axial adjustment assembly 133 is rotated in the other direction. The axial gas flow in the axial gas pipe 1313 passes through the reducing valve assembly 132 and then enters the stable combustion chamber 1127 through the axial circular pipe 1311.

Referring to FIG. 1, in one embodiment, a porous tubing 134 is disposed within an axial tube 1311, the porous tubing 134 comprising a plurality of cylindrical tubes and machined from a thermal storage ceramic material. That is, the porous tubing 134 comprises a plurality of cylindrical tubes of smaller diameter. The cylindrical tube forms a cylindrical passage through which axial airflow enters the plenum 1127. Moreover, the porous circular tube made of the heat storage type ceramic material is combined with the outer rotational flow high-temperature flame for preheating, so that the rapid pyrolysis preheating of the axial airflow such as ammonia gas and the like axially sprayed from the inner side is facilitated until the axial airflow is ignited and combusted, and the rapid temperature rise, the ignition and the stable combustion under the working condition of large flow of the axial airflow are promoted.

Referring to fig. 6, in one embodiment, a flow sleeve 135 is disposed within the axial barrel 1311, the flow sleeve 135 comprising a plurality of coaxially nested cylindrical tubes. The diameters of the cylindrical pipes are different, the cylindrical pipes are coaxially sleeved to form a direct-current sleeve 135, an annular channel is formed between the adjacent cylindrical pipes, and the annular channel can be used for axial airflow to pass through.

Referring to fig. 1, 2 and 10, in an embodiment, the tangential adjustment assembly 123 includes a hollow air adjustment disk 1231 and an air volume ratio adjustment rod 1232, the air adjustment disk 1231 is disposed in the plenum housing 111, and is sleeved on the axial airflow pipe 131 and located below the flame stabilizing chamber 1127, the airflow baffles 122 are respectively vertically disposed on the air adjustment disk 1231 along the circumferential direction and are disposed corresponding to the internal or

external airflow channels

1122 or 1121, the cross sections of the airflow baffles 122 are disposed in an arc shape, the air volume ratio adjustment rod 1232 is vertically disposed on the air adjustment disk 1231 and extends out through the plenum housing 111, and the air volume ratio adjustment rod 1232 can drive the air adjustment disk 1231 and the airflow baffles 122 thereon to rotate towards the airflow pipe 131 when rotating.

The air adjusting plate 1231 is a hollow circular flat plate structure. That is, the air adjusting plate 1231 is disc-shaped, and a through hole is formed in the middle region of the air adjusting plate 1231, and the through hole enables the air adjusting plate 1231 to be integrally sleeved on the axial circular tube 1311. Also, the register 1231 is also located in the plenum housing 111 and below the combustion stabilizing body 112. The external diameter of the through hole of the air adjusting disc 1231 is larger than the external diameter of the axial circular pipe 1311, so that the air adjusting disc 1231 can rotate around the axial circular pipe 1311, interference between the air adjusting disc 1231 and the axial circular pipe 1311 is avoided, and the air adjusting disc 1231 is ensured to rotate stably.

A plurality of airflow baffles 122 are fixed on the periphery of the tuning plate 1231, and specifically, one airflow baffle 122 corresponds to each position of the inner tangent airflow channel 1122. Although the inner tangential airflow channel 1122 mentioned here corresponds to one airflow baffle 122, the damper 1231 can drive the airflow baffle 122 to rotate, and the positions of the airflow baffle 122 in the inner tangential airflow channel 1122, the separating block 1124 and the outer tangential airflow channel 1121 can be switched when the airflow baffle 122 rotates. Also, the airflow baffle 122 is disposed perpendicular to the register plate such that the airflow baffle 122 can be disposed to correspond to the inner tangential airflow channels 1122.

In general, the air adjusting plate 1231 drives the airflow baffle 122 to be located at the position of the separating block 1124, at this time, the airflow baffle 122 does not shield the inner tangent airflow channel 1122 and the outer tangent airflow channel 1121, and the tangent airflow enters the stable combustion chamber 1127 through the inner tangent airflow channel 1122 and the outer tangent airflow channel 1121. When the swirl diameter needs to be increased, the air adjusting disc 1231 drives the airflow baffle 122 to gradually close each inner tangential airflow channel 1122, and at the moment, the tangential airflow enters the stable combustion chamber 1127 through each outer tangential airflow channel 1121. When the swirl diameter needs to be reduced, the air adjusting disk 1231 drives the airflow baffle 122 to gradually close each outer tangential airflow channel 1121, and at the moment, the tangential airflow enters the stable combustion chamber 1127 through each inner tangential airflow channel 1122. Optionally, the number of airflow baffles 122 is equal to the number of internal tangential airflow channels 1122. In this embodiment, the number of the airflow baffles 122 is four.

The rotation of the airflow baffle 122 driven by the air adjusting plate 1231 is realized by the air volume ratio adjusting rod 1232. Specifically, the air volume ratio adjusting lever 1232 is coupled to an edge position of the damper disk 1231 in the axial direction, and the air volume ratio adjusting lever 1232 can be protruded through the plenum housing 111. Accordingly, an arc-shaped chute extending in the circumferential direction is provided on the circumferential side of the plenum housing 111, and the air volume ratio adjusting lever 1232 is protruded through the arc-shaped chute. Like this, when the air volume ratio adjusting rod 1232 is operated, the air volume ratio adjusting rod 1232 can rotate along the arc-shaped sliding groove, and then can drive the air adjusting disc 1231 to rotate, so that the air adjusting disc 1231 can drive the airflow baffle 122 to rotate, and the airflow baffle 122 shields the inner tangent airflow flaring 1126, the outer tangent airflow flaring 1125 or the separating block 1124.

Referring to fig. 1, 2 and 10, in one embodiment, the cross-sectional shape of the airflow baffle 122 is arcuate. The cross-section of the airflow baffle 122 is circular arc. Thus, when the airflow baffle 122 blocks the inner tangential airflow channel 1122, the outer tangential airflow channel 1121, or the outer side of the grid block, the airflow baffle 122 can be kept in conformity with the outer peripheral surface of the combustion stabilizing formation 1123.

In one embodiment, the cross-sectional arc length of the air flow baffle 122 is equal to or less than the maximum circumferential dimension of the outer side of the divider block 1124, and the cross-sectional arc length of the air flow baffle 122 is equal to or greater than the maximum circumferential dimension of the outer and inner respective outer and inner perimeter air flow flares 1125, 1126. With the dimensions of the airflow baffle 122 limited in the manner described above, the airflow baffle 122 is able to accurately block the inner tangential airflow flare 1126 and the outer tangential airflow flare 1125.

Referring to fig. 1, 2 and 10, in an embodiment, the tangential adjustment assembly 123 further includes a sliding positioning plate 1233, which is in a ring shape, is adjacent to the wind adjustment plate 1231 and is respectively disposed at two sides of the wind adjustment plate 1231, and is used for positioning the wind adjustment plate 1231. The positioning slide sheet can support the positioning air adjusting plate 1231, so that the air adjusting plate 1231 can stably rotate in the air chamber shell 111, and the air adjusting plate 1231 is prevented from deflecting.

In one embodiment, the tangential adjustment assembly 123 further includes a tangential mounting housing 1234, the tangential mounting housing 1234 is disposed on a peripheral side of the tangential airflow duct 121, and an air volume ratio adjustment lever 1232 extends through the tangential mounting housing 1234. The tangential mounting housing 1234 is disposed at the bottom of the plenum housing 111 and is located at the periphery of the arc chute of the plenum housing 111, and the air volume ratio adjustment lever 1232 passes through the arc chute and then extends out of the tangential mounting housing 1234. Moreover, the tangential installation housing 1234 is shaped to fit the arc chute, which facilitates the rotation of the air volume ratio adjusting lever 1232.

In one embodiment, the tangential adjustment assembly 123 further includes an air volume ratio adjusting damper 1235, and the air volume ratio adjusting damper 1235 is disposed in the tangential mounting housing 1234 and is connected to the air volume ratio adjusting lever 1232. The air volume ratio adjusting sealing sheet 1235 plays a role in sealing, is arranged behind the tangential installation shell 1234, and can seal the joint of the air volume ratio adjusting rod 1232 and the tangential installation shell 1234, so that tangential air flow leakage is avoided, and the use performance of the low-carbon cyclone burner 100 with the flexibly adjustable flame diameter is ensured.

The low-carbon cyclone burner 100 with flexibly adjustable flame diameter according to the embodiment can drive the air adjusting disc 1231 and the airflow baffle 122 thereon to rotate around the central axis of the axial circular tube 1311 by rotating the position of the air volume ratio adjusting rod 1232 along the circumferential direction, so as to adjust the cyclone diameter. Specifically, the method comprises the following steps:

as shown in fig. 7 and 8, when the air volume ratio adjusting rod 1232 is rotated counterclockwise, the air adjusting disk 1231 drives each air flow baffle 122 to rotate counterclockwise around the central axis of the axial circular tube 1311, so that each air flow baffle 122 gradually shields the inner tangential air flow flaring 1126 adjacent to the inner tangential air flow flaring 1126, thereby reducing the air flow area of the inner tangential air flow flaring 1126 and achieving the purpose of reducing the air flow ratio between the inner tangential air flow and the outer tangential air flow. When each of the airflow baffles 122 completely obstructs the inner radial airflow flares 1126 adjacent thereto, the tangential airflow will not flow through the inner radial airflow channels 1122 but is completely ejected from the outer radial airflow channels 1121, and the maximum value of the swirl jet diameter is reached.

As shown in fig. 7 and 9, when the air volume ratio adjusting rod 1232 is adjusted clockwise, the air adjusting disk 1231 drives each air baffle 122 to rotate clockwise around the central axis of the axial circular tube 1311, so that each air baffle 122 gradually shields the outer tangential air flared opening 1125 adjacent to the air baffle 122, thereby reducing the air flow area of the outer tangential air flared opening 1125, and achieving the purpose of increasing the air flow ratio between the inner tangential air flow and the outer tangential air flow. When each of the airflow baffles 122 completely obstructs the outer circumferential airflow flares 1125 adjacent thereto, the tangential airflow will not flow through the outer circumferential airflow channels 1121 but is injected completely through the inner circumferential airflow channels 1122, at which time the minimum swirl jet diameter is reached.

In one embodiment, the tangential air flow structure 120 further includes a positioning bolt 124 disposed at the bottom of the plenum housing 111, one end of the positioning bolt 124 passes through the plenum housing 111 and abuts against the damper 1231, and the damper 1231 can be fixed or loosened by screwing the positioning bolt 124. As shown in fig. 2, the positioning bolt 124 is located at the lower end of the plenum housing 111 and at both ends of the axial cylinder 1311 opposite to the air volume ratio adjustment rod 1232. The fixing, namely loosening, of the air adjusting plate 1231 can be achieved by adjusting the screwing-in position of the positioning bolt 124, and the air adjusting plate 1231 is prevented from rotating under the influence of airflow flowing and vibration in the operation process of the low-carbon cyclone burner 100 with the flexibly adjustable flame diameter.

In one embodiment, the low-carbon cyclone burner 100 with flexibly adjustable flame diameter further includes a partition plate 113, the partition plate 113 is disposed in the plenum housing 111 and partitions the inner cavity of the plenum housing 111 into a plurality of air separation chambers 1131, and each air separation chamber 1131 corresponds to a set of inner and outer directional

air flow channels

1122 and 1121. The partition plate 113 is disposed in the tangential airflow pipe 121 and the plenum housing 111, the partition plate 113 partitions the passages of the plenum housing 111 and the tangential airflow pipe 121 into a plurality of air separation chambers 1131, and each air separation chamber 1131 is communicated with the tangential airflow pipe 121 and respectively wraps the outer circumferential airflow passage 1121 and the inner circumferential airflow passage 1122 of the flame stabilizer 112. This ensures that the tangential gas flow into each of the plenums 1131 is substantially uniform.

Alternatively, the structural form of the partition plate 113 is not limited in principle as long as a plurality of the air dividing chambers 1131 can be formed. In the present embodiment, the number of the partition plates 113 is three, and the three partition plates 113 are different in shape.

Referring to fig. 1 to 5, in an embodiment, the axial adjustment assembly 133 includes an adjustment disc 1331, the variable diameter valve assembly 132 includes a blade base 1321, a plurality of valve blades 1322, a plurality of guide posts 1323, and a plurality of positioning rotating shafts 1324, the plurality of valve blades 1322 are uniformly disposed on the blade base 1321 along a circumferential direction, one end of each valve blade 1322 is rotatably disposed on the blade base 1321 through the corresponding positioning rotating shaft 1324, the adjustment disc 1331 is axially spaced from the blade base 1321, the adjustment disc 1331 is provided with a plurality of guide slots 13311, the guide posts 1323 are mounted on the valve blades 1322 and mounted in the corresponding guide slots 11, the adjustment disc 1331 is connected to the axial adjustment assembly 133, and when the adjustment disc 1331 rotates, the valve blades 1322 can be driven to rotate around the positioning rotating shafts 1324 through the cooperation of the guide slots 13311 and the guide posts 1323.

An end of the axial circular pipe 1311 far away from the combustion stabilizing chamber 1127 is coaxially connected and communicated with the mounting pipe 1312 and the axial air pipe 1313 in sequence. A variable diameter valve assembly 132 and an axial adjustment assembly 133 are installed in the installation tube 1312. Specifically, the blade base 1321 and the adjusting disk 1331 both have annular circular plate structures, and the inner diameter and the outer diameter of the blade base 1321 are the same as those of the adjusting disk 1331. The vane base 1321 and the adjustment disk 1331 are spaced apart in the axial direction, and as shown in fig. 2, the vane base 1321 is located above the adjustment disk 1331, and the valve vane 1322 is located between the vane base 1321 and the adjustment disk 1331.

The number of the valve vanes 1322 is at least six, and is symmetrically and uniformly distributed on the vane seat 1321 along the circumferential direction. Also, one end of each valve vane 1322 is rotatably mounted to the vane base 1321 by a positioning rotation shaft 1324. When the positioning rotating shaft 1324 rotates, the valve vane 1322 can be driven to rotate around the positioning rotating shaft 1324. When the plurality of valve vanes 1322 are simultaneously rotated, the plurality of valve vanes 1322 can be away from or block the inner hole of the vane base 1321. When the valve vane 1322 blocks the inner hole of the vane base 1321, the axial air flow in the axial air pipe 1313 cannot enter the flame stabilizing chamber 1127 through the vane base 1321. When the plurality of blades partially block the inner hole of the blade base 1321, the airflow flow area is small, and the axial airflow in the axial air pipe 1313 enters the flame stabilizing chamber 1127 through the blade base 1321. When the plurality of vanes fully open the inner hole of the vane base 1321, the airflow flow area increases, and the axial airflow in the axial air pipe 1313 enters the flame stabilization chamber 1127 through the vane base 1321.

A guide post 1323 is provided in the middle of each valve vane 1322, and guide grooves 13311 are symmetrically and uniformly provided in the circumferential direction on the adjustment disk 1331. The guide slots 13311 have an elongated hollow structure, and the number of the guide slots 13311 is equal to the number of the valve vanes 1322. The guide column 1323 has one end fixed to the valve vane 1322 and the other end passing through a guide groove 13311 of the adjustment disk 1331 at a corresponding position. When the adjusting disk 1331 rotates, the guide slot 13311 can drive the guide post 1323 to move, and then the guide post 1323 can drive the valve vane 1322 connected with the guide post 1323 to rotate, so that the valve vane 1322 can open or close the inner hole of the vane base 1321.

Referring to fig. 1-5, in one embodiment, the axial adjustment assembly 133 further includes an inner diameter adjustment rod 1332, the inner diameter adjustment rod 1332 being coupled to the adjustment disk 1331 and extending in a radial direction out of the axial airflow tube 131. The rotation of the valve vane 1322 by the adjusting disc 1331 is realized by the inner diameter adjusting rod 1332. Specifically, the inner diameter adjustment lever 1332 is provided at an edge position of the adjustment disk 1331 in a radial direction, and the adjustment lever can protrude through the mounting tube 1312. Accordingly, an arc-shaped sliding groove extending in the circumferential direction is provided on the circumferential side of the mounting pipe 1312, and the inner diameter adjustment rod 1332 extends along the arc-shaped sliding groove. Thus, when the inner diameter adjusting rod 1332 is operated, the inner diameter adjusting rod 1332 can rotate along the arc-shaped sliding groove, and then the adjusting disk 1331 can be driven to move, so that the adjusting disk 1331 can drive the valve vane to rotate, and then the control of the valve vane 1322 to adjust the air flow circulation area is realized.

In one embodiment, the axial adjustment assembly 133 further includes an axial mounting housing 1333, the axial mounting housing 1333 being disposed on a peripheral side of the axial airflow tube 131, and the inner diameter adjustment rod 1332 extending through the axial mounting housing 1333. An axial mounting housing 1333 is provided at a side of the mounting tube 1312 and around the arc-shaped sliding groove, and an inner diameter adjusting rod 1332 passes through the arc-shaped sliding groove and then extends out through the axial mounting housing 1333. Moreover, the shape of the axial mounting housing 1333 is adapted to the shape of the arc-shaped chute, facilitating rotation of the inner diameter adjustment rod 1332.

In one embodiment, the axial adjustment assembly 133 further includes an inner diameter adjustment sealing piece 1334, the inner diameter adjustment sealing piece 1334 being disposed in the axial mounting housing 1333 and connected to the inner diameter adjustment rod 1332. The inner diameter adjusting sealing piece 1334 plays a sealing role and is arranged behind the axial installation shell 1333, the inner diameter adjusting sealing piece 1334 can seal the joint of the inner diameter adjusting rod 1332 and the axial installation shell 1333, axial airflow leakage is avoided, and the service performance of the low-carbon cyclone burner 100 with the flexibly adjustable flame diameter is ensured.

In the low-carbon cyclone burner 100 with flexibly adjustable flame diameters according to the above embodiment, the position of the inner diameter adjusting rod 1332 is adjusted in the circumferential direction to drive the adjusting disc 1331 and the guide groove 13311 located thereon to rotate, the rotating guide groove 13311 guides the guide post 1323 passing through the inside of the adjusting disc 1331, and finally drives each valve blade 1322 to rotate around the positioning rotating shaft 1324, so that each valve blade 1322 is opened and closed. Specifically, the method comprises the following steps:

as shown in fig. 3, when the inner diameter adjustment rod 1332 is rotated clockwise, each valve vane 1322 will be driven to rotate clockwise, so that one end of the valve vane 1322 far away from the positioning rotating shaft 1324 is gathered towards the center of the adjustment disc 1331, thereby achieving the purpose of reducing the air flow area. As shown in fig. 3, when the inside diameter adjustment rod 1332 is rotated counterclockwise, each valve vane 1322 will be driven to rotate counterclockwise, so that one end of the valve vane 1322, which is far away from the positioning rotating shaft 1324, moves towards the periphery of the adjustment disc 1331, thereby achieving the purpose of increasing the airflow area.

Alternatively, when the porous piping 134 is provided in the axial circular hole, an end of the porous piping 134 remote from the flame stabilization chamber 1127 protrudes into the inner hole of the blade base 1321. The end of the porous pipe system 134 far from the combustion stabilizing chamber 1127 and the end of the vane base 1321 far from the combustion stabilizing chamber 1127 are located on the same plane, and are used for lifting and positioning each valve vane 1322, so as to prevent the valve vane 1322 from being blown, deformed and vibrated in the process of flowing through the valve vane 1322 by high-speed airflow.

Referring to fig. 1 and 2, in the working process of the low-carbon cyclone burner 100 with the flexibly adjustable flame diameter, tangential airflow (premixed gas of hydrogen-based fuel gas such as natural gas, hydrogen and the like) enters from the tangential airflow pipe 121, and after being uniformly distributed by the partition plates, the tangential airflow respectively enters each air distribution chamber, then sequentially flows through the inner tangential airflow flaring 1126, the inner tangential airflow channel 1122, the outer tangential airflow flaring 1125 and the outer tangential airflow channel 1121, and is sprayed into the square stable combustion chamber 1127 to form high-speed rotating jet flow, so that cyclone flame is generated.

When the diameter of the swirling flame needs to be increased, the air volume ratio adjusting rod 1232 is rotated anticlockwise to drive each air flow baffle 122 to rotate anticlockwise around the central axis of the axial circular tube 1311, so that each air flow baffle 122 gradually shields each internal tangent airflow flaring 1126 adjacent to the air flow baffle, the airflow circulation area of each internal tangent airflow flaring 1126 is reduced, and the purposes of increasing the airflow volume ratio between the external tangent airflow and the internal tangent airflow and increasing the diameter of the swirling flame are achieved.

When the diameter of the swirling flame needs to be reduced, the air volume ratio adjusting rod 1232 is rotated clockwise to drive each air flow baffle 122 to rotate clockwise around the central axis of the axial circular tube 1311, so that each air flow baffle 122 gradually shields each external tangential air flow flaring 1125 adjacent to the air flow baffle 122, the air flow area of each external tangential air flow flaring 1125 is reduced, and the purposes of increasing the air flow ratio between the internal tangential air flow and the external tangential air flow and reducing the diameter of the swirling flame are achieved.

Then, an axial air flow (which may be a premixed gas of ammonia gas and air, or a premixed gas of ammonia gas, natural gas, or air, etc.) flows in from the axial air pipe 1313, passes through the variable-diameter valve assembly 132, enters the porous pipe system 134, and flows out from an outlet of the porous pipe system 134 at one end of the flame stabilizing chamber 1127. Then, under the influence of swirl combustion flame in the stable combustion chamber 1127, axial airflow is rapidly heated, pyrolyzed and ignited to generate axial flame.

When the diameter of the axial flame needs to be reduced, the inner diameter adjusting rod 1332 is rotated clockwise, so that one end of the valve vane 1322, which is far away from the positioning rotating shaft 1324, is gathered towards the center of the adjusting disk 1331, and the purposes of reducing the flow area of the airflow and reducing the diameter of the axial flame are achieved. When the diameter of the axial flame needs to be increased, the inner diameter adjusting rod 1332 is rotated counterclockwise, so that one end of the valve vane 1322, which is far away from the positioning rotating shaft 1324, moves to the periphery of the adjusting disk 1331, and the purposes of increasing the airflow circulation area and increasing the diameter of the axial flame are achieved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. a low-carbon swirl burner with flexible and adjustable flame diameter, is characterized in that, comprises:

The combustion stabilizing structure includes a wind chamber casing and a hollow combustion stabilizing body, the combustion stabilizing body is arranged in the wind chamber casing, and the combustion stabilizing body has a hollow combustion stabilizing chamber and is connected to the wind chamber casing an inner tangential airflow channel and an outer tangential airflow channel communicated with the combustion stabilization chamber;

The tangential airflow structure includes a tangential airflow pipe, an airflow baffle, and a tangential adjustment component. The tangential airflow pipe is radially arranged on the air chamber housing and communicated with the air chamber housing. The airflow baffle is connected to the tangential adjustment assembly and is located on the peripheral side of the combustion stabilizer, and the tangential adjustment assembly can adjust the airflow baffle to block the inner tangential airflow channel and the outer tangential airflow. passages or removed from the peripheral sides of the inner and outer tangential airflow passages; and

The axial airflow structure includes an axial airflow pipe, a variable diameter valve assembly and an axial adjustment assembly. The axial airflow pipe is axially arranged on the air chamber shell and extends into the combustion stabilization chamber. The reducing valve assembly is arranged in the axial airflow pipe, and is used to adjust the airflow flow area of the axial airflow output from the axial airflow pipe, and the axial adjustment assembly is connected to the reducing valve assembly for driving all the Describe the movement of the reducing valve assembly.

2 . The low-carbon swirl burner with flexible and adjustable flame diameter according to claim 1 , wherein the stable combustion body comprises a plurality of stable combustion forming bodies and a plurality of partition blocks, and a plurality of the stable combustion The forming bodies are spaced to form the combustion stabilization chamber, the partition block is arranged between two adjacent combustion stabilization formation bodies, and the two combustion stabilization formation bodies and the partition block are enclosed to form the inner combustion chamber. The tangential airflow channel and the outer tangential airflow channel, each of the inner tangential airflow channel corresponds to one of the airflow baffles.

3. The low-carbon swirl burner with a flexible and adjustable flame diameter according to claim 2, wherein an outer tangential airflow flare is provided at the airflow inlet of the inner tangential airflow channel, and an outer tangential airflow flare is provided at the airflow inlet of the inner tangential airflow channel. An inner tangential airflow flaring is arranged at the airflow inlet of the tangential airflow channel, and the cross-sections of the inner tangential airflow flaring and the outer tangential airflow flaring are arranged in a triangular shape.

4 . The low-carbon swirl burner with a flexible and adjustable flame diameter according to claim 3 , wherein the tangential adjustment component comprises a hollow air adjusting plate and an air volume ratio adjusting rod, and the air adjusting plate is provided with in the air chamber shell and sleeved on the axial air flow pipe, and located below the combustion stabilization chamber, a plurality of the air flow baffles are respectively vertically arranged on the air adjustment disc along the circumferential direction, and corresponding to a plurality of the inner tangential airflow channels or a plurality of the outer tangential airflow channels, the cross section of the airflow baffle is arranged in an arc shape, and the air volume ratio adjustment rod is vertically arranged on the air regulating plate, and protrudes through the air chamber shell, and the air volume ratio adjusting rod can drive the air regulating plate and the air flow baffle on it to rotate around the axial air flow pipe when the air volume ratio adjusting rod rotates;

The cross-sectional arc length of the airflow baffle is less than or equal to the maximum circumferential dimension of the outer side of the partition block, and the cross-sectional arc length of the airflow baffle is greater than or equal to each of the outer tangential airflow flares and the inner tangential airflow The outer maximum circumferential dimension of the flare;

The tangential adjustment assembly further includes a sliding positioning piece in the shape of an annular ring, adjacent to the wind adjustment disk and disposed on both sides of the wind adjustment disk respectively, for positioning the wind adjustment disk.

5 . The low-carbon swirl burner with flexible and adjustable flame diameter according to claim 4 , wherein each of the inner tangential airflow channels and each of the outer tangential airflow channels is a set of airflow channels. 6 . , multiple groups of the airflow channels are evenly arranged on the peripheral side of the combustion stabilization chamber, and the inner tangential airflow channel and the corresponding outer tangential airflow channel have an included angle, and the outer tangential airflow channel is located in the The direction in which the tangential airflow is delivered in the stable combustion chamber is tangent to the outer region of the axial airflow pipe, and the direction in which the inner tangential airflow channel delivers the tangential airflow in the stable combustion chamber can be tangential to the axial direction. The inner regions of the airflow ducts intersect;

When the airflow baffle closes each of the inner tangential airflow channels and opens each of the outer tangential airflow channels, a tangential rotating jet with a maximum diameter can be constructed;

When the airflow baffle opens each of the inner tangential airflow passages and closes each of the outer tangential airflow passages, a tangential rotating jet with the smallest diameter can be formed.

6 . The low-carbon swirl burner with flexible and adjustable flame diameter according to claim 5 , wherein the stable combustion chamber is arranged in a square shape, and the inner tangential airflow channel and the outer tangential airflow channel are arranged in a square shape. 7 . The number is four, and is arranged at the four corners of the stable combustion chamber;

The tangential airflow injection angle α of the inner tangential airflow channel and the tangential airflow injection angle β of the outer tangential airflow channel must satisfy that α/(90°-β) is greater than or equal to 1.2.

7 . The low-carbon swirl burner with flexible and adjustable flame diameter according to claim 5 , wherein the tangential airflow structure further comprises positioning bolts arranged at the bottom of the wind chamber shell. One end of the bolt passes through the air chamber shell and is in contact with the air regulating plate, and the positioning bolt can fix or loosen the air regulating plate when screwing in;

The low-carbon swirl burner with flexible and adjustable flame diameter further includes a partition plate, which is arranged in the air chamber shell and divides the inner cavity of the air chamber shell into a plurality of parts. an air chamber, each of the air distribution chambers corresponds to a group of the inner tangential airflow channel and the outer tangential airflow channel.

8. The low carbon swirl burner with flexible and adjustable flame diameter according to any one of claims 1 to 7, wherein the axial adjustment assembly comprises an adjustment disc, and the diameter reducing valve assembly includes a vane base A seat, a plurality of valve blades, a plurality of guide posts and a plurality of positioning shafts, the plurality of valve blades are evenly arranged on the blade base along the circumferential direction, and one end of each of the valve blades can pass through the corresponding positioning shaft. It is rotatably arranged on the vane base, the adjusting disc and the vane base are axially spaced apart, the adjusting disc is provided with a plurality of guide grooves, and the guide post is mounted on the valve vane and is mounted on the corresponding valve vane. In the guide groove, the adjustment disc is connected with the axial adjustment assembly, and when the adjustment disc rotates, the valve blade can be driven around the positioning shaft through the cooperation of the guide slot and the guide post. turn.

9 . The low-carbon swirl burner with flexible and adjustable flame diameter according to claim 8 , wherein the axial adjustment assembly further comprises an inner diameter adjustment rod, and the inner diameter adjustment rod is connected with the adjustment disc, 10 . and extending out of the axial airflow pipe along the radial direction;

The axial adjustment assembly further includes an axial installation casing, the axial installation casing is disposed on the peripheral side of the axial airflow pipe, and the inner diameter adjustment rod protrudes through the axial installation casing;

The axial adjustment assembly further includes an inner diameter adjustment sealing sheet, the inner diameter adjustment sealing sheet is arranged in the axial installation housing and is connected with the inner diameter adjustment rod.

10. The low carbon swirl burner with flexible and adjustable flame diameter according to any one of claims 1 to 7, wherein the axial airflow pipe comprises an axial circular pipe, a mounting pipe and Axial air pipe, one end of the axial circular pipe extends into the stable combustion body and is flush with the inner wall end face of the stable combustion chamber, and the installation pipe protrudes out of the shaft in the radial direction It is arranged to the round pipe, the reducing valve assembly and the axial adjustment assembly are installed in the installation pipe, and the axial air pipe is used for conveying axial airflow;

A porous tube system is arranged in the axial circular tube, and the porous tube system includes a plurality of cylindrical tubes and is processed from a heat storage type ceramic material;

Alternatively, a DC bushing is arranged in the axial circular tube, and the DC bushing includes a plurality of cylindrical tubes arranged coaxially.