Fire grate burner with fire transfer structure

Abstract

The utility model relates to a fire grate burner with a fire transfer structure. The fire grate burner comprises a fire grate assembly, a first air plate and a second air plate, wherein the fire grate assembly is composed of a plurality of fire grate single pieces which are sequentially arranged at intervals and provided with a plurality of fire outlet holes. A plurality of first fire transfer sheets are formed on the first air plate at intervals; a plurality of second fire transfer sheets are formed on the second air plate at intervals; each of the first fire transfer sheet and the second fire transfer sheet has a first width; a fire row air channel formed between every two adjacent fire row single pieces has a second width. After the structure is adopted, the fire grate has the beneficial effects that the reasonable gap is formed between the fire transferring sheet and the fire grate air channel, the amount of air flowing from the fire grate air channel to the surfaces of the flame openings is reduced, and the amount of fuel gas between the surfaces of the adjacent flame openings is increased, so that the fire transferring effect between the two adjacent fire grate single sheets is better.

Description

Technical Field

[0001] The utility model belongs to the technical field of burners, in particular to a fire row burner with a fire transfer structure. Background Art

[0002] Burners, especially low-nitrogen burners, often ignite only one row when ignited at low load and in cold state (relatively cold weather), or transfer the fire to several rows without the entire burner igniting. All burners on the market (atmospheric burners, concentrated and diluted burners) are a single fire row piece, which is then connected in series by a bracket or a connector. There is a certain distance between the fire row pieces to allow oxygen to pass through, making the combustion more complete. However, this also brings more difficulties to fire transmission or fire transfer. The flames between the single fire row pieces are difficult to be transmitted smoothly, resulting in some fire row pieces failing to ignite normally, causing gas waste and insufficient heating. However, this problem will not exist when igniting under high load (sufficient gas) because the gas concentration is high and the gas diffusion is strong under high load, but this also provides a better environment for deflagration. Therefore, it is imperative to achieve rapid fire transmission when igniting under low load. Utility Model Content

[0003] In order to solve the above problems in the prior art, the utility model provides a fire row burner with a fire transfer structure, which is used to solve the problem that ignition cannot achieve fire transfer under low load conditions, thereby improving ignition efficiency and saving gas.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] As one aspect of the utility model, a fire row burner with a fire transmission structure is provided, which comprises: a fire row assembly composed of a plurality of fire row single pieces with a plurality of fire outlet holes arranged in sequence at intervals, a first air plate and a second air plate, each fire row single piece has an air inlet; a fire row air passage is formed between two adjacent fire row single pieces; a plurality of fire outlet holes on each fire row single piece are distributed on the upper surface of the fire row single piece as flame mouths; the first air plate is installed at one end of the air inlet close to the fire row assembly, and the second air plate is installed at one end of the air inlet away from the fire row assembly;

[0006] The first air plate comprises a first air plate body, on which a plurality of first fire transmission pieces extending toward the fire exhaust air passage are formed at intervals; a first fire transmission piece is provided in the fire exhaust air passage formed between two adjacent fire exhaust pieces;

[0007] The second air plate comprises a second air plate body, on which a plurality of second fire transmission pieces extending toward the fire exhaust air passage are formed at intervals; a second fire transmission piece is provided in the fire exhaust air passage formed between two adjacent fire exhaust pieces;

[0008] The first fire transmission plate and the second fire transmission plate both have a first width L; the fire row air channel formed between two adjacent fire row sheets has a second width L1; the first width L and the second width L1 satisfy the following formula: K=L / L1, and the numerical range of K is: 1>K>0.8.

[0009] Optionally, multiple fire holes have a total flame mouth length S on the upper surface of each single fire row piece; the first fire transfer plate has a first length S1, and the second fire transfer plate has a second length S2; the first length S1, the second length S2 and the total length S satisfy the following formula: R = (S1+S2) / S, and the numerical range of R is: 1 / 6>R>1 / 12.

[0010] Optionally, there is a first height M between the upper surface of the first fire transfer plate and the upper surface of the second fire transfer plate and the flame mouth surface on the fire row single piece, and the numerical range of M is: 0.5>M>3.

[0011] The beneficial effects of the fire row burner with a fire transfer structure of the utility model are specifically embodied in: a reasonable gap is set between the fire transfer plate and the fire row air channel, the amount of air flowing from the fire row air channel to the flame mouth surface is reduced, and the amount of fuel gas between adjacent flame mouth surfaces is increased, so that the fire transfer effect between two adjacent fire row single plates is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings in the specification, which constitute a part of the present application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0013] Figure 1 This is a structural front view of a fire row burner with a fire transfer structure of the utility model;

[0014] Figure 2 It is a structural side view of the fire row burner with a fire transfer structure of the utility model;

[0015] Figure 3 for Figure 1 Partial schematic diagram at point A in the middle;

[0016] Figure 4 for Figure 1 Partial schematic diagram at B in the middle;

[0017] Figure 5 It is a duty cycle curve diagram of the fire exhaust plate and the fire exhaust air channel of the utility model. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the utility model and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0019] A fire row burner with a fire transfer structure according to an embodiment of the present application, such as Figure 1-Figure 4 As shown, it comprises: a fire bar assembly composed of a plurality of fire bar single pieces 1 having a plurality of fire outlet holes 11 arranged in sequence at intervals, a first air plate 2 and a second air plate 3, each fire bar single piece 1 having an air inlet; a fire bar air channel is formed between two adjacent fire bar single pieces 1; the plurality of fire outlet holes 11 on each fire bar single piece 1 are distributed on the upper surface of the fire bar single piece 1 as flame mouths;

[0020] The first air plate 2 is installed at one end of the air inlet close to the fire bar assembly, and the second air plate 3 is installed at one end of the air inlet away from the fire bar assembly;

[0021] The first air plate 2 comprises a first air plate body 21, on which a plurality of first fire transmission pieces 22 extending toward the fire exhaust air passage are formed at intervals; the fire exhaust air passage formed between two adjacent fire exhaust single pieces 1 has a first fire transmission piece 22;

[0022] The second air plate 3 comprises a second air plate body 31, on which a plurality of second fire transmission pieces 32 extending toward the fire exhaust air passage are formed at intervals; the fire exhaust air passage formed between two adjacent fire exhaust single pieces 1 has a second fire transmission piece 32;

[0023] The first fire transmission plate 22 and the second fire transmission plate 32 both have a first width L; the fire row air channel formed between two adjacent fire row single plates 1 has a second width L1; the first width L and the second width L1 satisfy the following formula: K=L / L1, the numerical range of K is: 1>K>0.8, preferably, K is 0.95.

[0024] Since the first width L and the second width L1 are close in value, the amount of air flowing from the fire exhaust air channel to the flame mouth surface is reduced, and the amount of gas between adjacent flame mouth surfaces is increased, so that the fire transfer effect between two adjacent fire exhaust single pieces 1 is better. Figure 5As shown; when the K value is equal to 1, the two sides of the first fire transmission piece 22 and the two sides of the second fire transmission piece 32 in the air passage of the fire exhaust cannot enter oxygen, resulting in local high smoke; the smoke volume cannot be controlled, and when the K value is greater than 1, the installation between the air plate and the fire exhaust cannot be achieved. If the K value is too small, the fire transmission efficiency is affected. Because the two sides of the first fire transmission piece 22 and the two sides of the second fire transmission piece 32 in the air passage of the fire exhaust cannot enter oxygen, the local smoke is high.

[0025] A plurality of fire outlet holes 11 have a total flame mouth length S on the upper surface of each fire row single piece 1; the first fire transfer piece 22 has a first length S1, and the second fire transfer piece 32 has a second length S2, and the first length S1 or the second length S2 can be zero; the first length S1, the second length S2 and the total length S satisfy the following formula: R=(S1+S2) / S, and the numerical range of R is: 1 / 6>R>1 / 12, preferably, R is 1 / 8, and the size of the R value affects the fire transfer performance. If the R value is too large, the local smoke will be high.

[0026] like Figure 1-Figure 2 As shown, the upper surface of the first fire transmission piece 22 and the upper surface of the second fire transmission piece 32 have a first height M with the flame mouth surface on the fire bar single piece 1, and the value range of M is: 0.5>M>3; if the M value is large, the fire transmission performance will not change much, and if the M value is too small, the flame will encounter a cold fire transmission piece when burning, and the smoke will increase, thereby increasing the CO content. It should be noted that the flame mouth surface on the fire bar single piece 1 is the distribution surface of multiple fire outlet holes 11 on a single fire bar single piece 1.

[0027] Whether there is a gap between the fire transmission piece and the air passage of the fire exhaust is used to test the CO content index; the experiment uses 22 fire exhaust pieces as the main body, and the difference lies in whether there is a gap between the fire transmission piece and the air passage of the fire exhaust, as follows:

[0028] There is a gap between the fire transmission plate and the fire exhaust air passage. The CO content index data is as follows:

[0029]

[0030]

[0031] There is no gap between the fire transmission plate and the fire exhaust air passage. The CO content index data is as follows:

[0032] <![CDATA[P2(Pa)]]> Gas consumption (kW) <![CDATA[O2]]> CO(PPM) <![CDATA[CO2(%)]]> COa=1(PPM) 1600 3.97 8.02 800 7.82 1201.02 1190 3.4 10.02 67 6.51 120.83 600 2.42 13.74 35 4.28 96 440 2.08 14.89 17 3.62 55.13 190 1.42 16.82 81 2.37 401.24 110 1.15 18.04 185 1.96 1108.11

[0033] It should be noted that 110Pa and 1600Pa are extreme test conditions, and COa is the converted CO content index in this field. From the comparison of the above two tables, it can be seen that: under the condition of equal gas consumption, above 600Pa, the CO content generated when there is no gap between the fire transfer plate and the fire exhaust air channel is higher than the CO content generated when there is a gap between the fire transfer plate and the fire exhaust air channel. Therefore, a reasonable gap designed between the fire transfer plate and the fire exhaust air channel has greater advantages in terms of fire transfer effect and CO content index.

[0034] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0035] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0036] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0037] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0038] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the present invention.

Claims

1. A fire row burner with a fire transfer structure, characterized in that: It comprises: a fire bar assembly consisting of a plurality of fire bar single pieces with a plurality of fire outlet holes arranged in sequence at intervals, a first air plate and a second air plate, each fire bar single piece has an air inlet; a fire bar air passage is formed between two adjacent fire bar single pieces; a plurality of fire outlet holes on each fire bar single piece are distributed on the upper surface of the fire bar single piece as flame mouths; the first air plate is installed at one end close to the air inlet of the fire bar assembly, and the second air plate is installed at one end away from the air inlet of the fire bar assembly; The first air plate comprises a first air plate body, on which a plurality of first fire transmission pieces extending toward the fire exhaust air passage are formed at intervals; a first fire transmission piece is provided in the fire exhaust air passage formed between two adjacent fire exhaust pieces; The second air plate comprises a second air plate body, on which a plurality of second fire transmission pieces extending toward the fire exhaust air passage are formed at intervals; a second fire transmission piece is provided in the fire exhaust air passage formed between two adjacent fire exhaust pieces; The first fire transmission plate and the second fire transmission plate both have a first width L; the fire row air channel formed between two adjacent fire row sheets has a second width L1; the first width L and the second width L1 satisfy the following formula: K=L / L1, and the numerical range of K is: 1>K>0.

8.

2. The fire row burner with a fire transfer structure according to claim 1, characterized in that: Multiple fire holes have a total flame mouth length S on the upper surface of each single fire row piece; the first fire transfer piece has a first length S1, and the second fire transfer piece has a second length S2; the first length S1, the second length S2 and the total length S satisfy the following formula: R = (S1+S2) / S, and the numerical range of R is: 1 / 6>R>1 / 12.

3. The fire row burner with a fire transfer structure according to claim 1 or 2, characterized in that: There is a first height M between the upper surface of the first fire transfer plate and the upper surface of the second fire transfer plate and the flame mouth surface on the fire row single piece, and the numerical range of M is: 0.5>M>3.

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