Combustion head structure adaptive to power adjustment
By adopting a combined structure of the outer and inner fire cylinders, as well as a gas mixing structure and multiple combustion disk designs, the problem that existing combustion heads are difficult to adjust both high and low power at the same time is solved, and flexible power adjustment of the combustion heads under different working conditions is achieved.
Patent Information
- Application Number
- CN202421566664.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-04
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-07-04
AI Technical Summary
It is difficult for existing combustion heads to take into account both high power and low power adjustments, which makes it difficult to meet power requirements under different working conditions.
The combined structure of the outer fire cylinder and the inner fire cylinder is adopted, and combustion gas is transported to the combustion plate through the outer fire cylinder and the inner fire cylinder respectively. Combined with the gas mixing structure and multiple combustion plate designs, the power adjustment of the combustion head is achieved.
It realizes a combustion head that can take into account both high power and low power, meets the power needs under different working conditions, and improves the flexibility and efficiency of the combustion process.
Smart Images
Figure CN222811751U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of combustion equipment, in particular to a combustion head structure capable of adapting to power regulation. Background Art
[0002] A burner is a device that mixes fuel (such as gas, oil) with air and sprays it out in a certain proportion to achieve full combustion of the fuel. As the main component of the burner, the burner head has various structures. At present, with the increase in production demand, the rated power of the burner head is also increasing. However, for some working conditions that require both high-power and low-power regulation, its power regulation ratio is difficult to take into account both large and small power requirements. Utility Model Content
[0003] In order to solve the problem in the prior art that the burner head cannot take into account both the large and small powers of the burner, the utility model provides a burner head structure that can adapt to power adjustment.
[0004] The technical solution adopted by the utility model is: a combustion head structure that can be adapted to power adjustment, comprising a fire barrel, wherein the two ends of the fire barrel are respectively an air inlet end and an air outlet end, the fire barrel comprises an outer fire barrel and an inner fire barrel, the outer fire barrel is sleeved outside the inner fire barrel; a combustion disk is provided at the air outlet end; combustion gas is respectively transported to the combustion disk by the outer fire barrel and the inner fire barrel; the combustion disk comprises a first combustion disk and a second combustion disk, wherein the second combustion disk and the first combustion disk respectively form combustion areas on the combustion disk; the first combustion disk is arranged at the air outlet end of the inner fire barrel, and combustion gas is directly transported to the first combustion disk by the inner fire barrel; the second combustion disk is sleeved outside the first combustion disk, and the second combustion disk is located between the inner wall of the outer fire barrel and the outer wall of the inner fire barrel, and combustion gas is directly transported to the second combustion disk by the outer fire barrel.
[0005] A further technical solution is: a gas mixing structure is arranged in the outer fire tube, and the gas mixing structure includes an air flow ring and a gas pipe, the air flow ring has an outer wall and an inner wall, and a gas channel is formed between the outer wall and the inner wall of the air flow ring, and the outer wall is in contact with the inner wall of the outer fire tube; the air flow ring is provided with a hollow channel, and the hollow channel is used for the combustion gas of the outer fire tube to pass through; the gas pipes are arranged in an array along the radial direction of the air flow ring, and the two ends of the gas pipes respectively penetrate the inner wall of the air flow ring and extend into the gas channel of the air flow ring; the gas pipe is provided with an outlet hole, and the gas in the gas channel is output to the outer fire tube through the outlet hole; wherein, the air flow ring is connected to a first combustible gas inlet pipe, and one end of the first combustible gas inlet pipe extends from the side wall of the outer fire tube and is connected with the air flow ring.
[0006] A further technical solution is: the inner fire tube is connected to a second combustible gas intake pipe, the second combustible gas intake pipe extends along the radial direction of the inner fire tube, and the intake end of the second combustible gas intake pipe is located outside the outer fire tube.
[0007] A further technical solution is that the diameter of the first combustible gas intake pipe is smaller than the diameter of the second combustible gas intake pipe.
[0008] A further technical solution is: the air inlet end of the inner fire tube is located on a side of the air flow ring close to the first combustion disk, and there is a gap between the air inlet end of the inner fire tube and the air flow ring.
[0009] A further technical solution is: the air inlet end of the inner fire tube is located on the side of the airflow ring away from the first combustion disk.
[0010] A further technical solution is: a flame ionization probe and an ignition needle are also provided in the fire tube, the flame ionization probe and the ignition needle are both extended along the axial direction of the fire tube, and the needle heads of the flame ionization probe and the ignition needle are both located at the gas outlet end of the fire tube.
[0011] A further technical solution is: there are two flame ion probes, one of which is located in the inner fire tube, and the other is located between the inner fire tube and the outer fire tube.
[0012] The beneficial effect of the utility model is that by configuring the fire barrel to be an outer fire barrel and an inner fire barrel, and the combustion disk being located at the air outlet end of the entire fire barrel, when the inner fire barrel is used, the combustion head can act as a low-power combustion head, and when the outer fire barrel is used, the entire combustion disk can be burned in combination with the inner fire barrel, so that the combustion head can act as a high-power combustion head, thereby achieving the function of taking into account both large and small powers with one combustion head. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a structural schematic diagram of one embodiment of a combustion head structure capable of adapting power adjustment according to the utility model;
[0014] Figure 2 It is a structural schematic diagram of another embodiment of a combustion head structure capable of adapting power adjustment according to the utility model;
[0015] Figure 3 for Figure 1 A cross-sectional view from one of the perspectives of
[0016] Figure 4 for Figure 2 A cross-sectional view from one of the viewing angles of the
[0017] Figure numerals: 1. fire tube, 11. outer fire tube, 12. inner fire tube, 2. combustion disk, 21. first combustion disk, 22. second combustion disk, 3. gas mixing structure, 31. air flow ring, 32. gas pipe, 321. air outlet, 4. first combustible gas inlet pipe, 5. second combustible gas inlet pipe, 6. flame ionization probe, 7. ignition needle. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.
[0019] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present invention. However, it is apparent to those skilled in the art that these specific details are not necessary to implement the present invention. In other examples, in order to avoid obscuring the present invention, well-known structures, circuits, materials or methods are not specifically described.
[0020] Throughout the specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment," "an embodiment," "an example," or "an example" appearing in various places throughout the specification do not necessarily all refer to the same embodiment or example. In addition, particular features, structures, or characteristics may be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. In addition, it will be appreciated by those of ordinary skill in the art that the figures provided herein are for illustrative purposes and that the figures are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0021] In the description of the present invention, it should be understood that the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the scope of protection of the present invention.
[0022] The following is combined with Figure 1-4 The embodiments of the present utility model are described in detail.
[0023] Example 1
[0024] At present, with the increase in production demand, the rated power of the combustion head is getting larger and larger. However, for some working conditions that need to meet both high-power and low-power regulation, its power regulation ratio is difficult to take into account both large and small power requirements.
[0025] In order to solve the above problems, the present embodiment provides a burner head structure with adaptable power adjustment, including a fire tube 1, wherein the two ends of the fire tube 1 are respectively an air inlet end and an air outlet end, and the fire tube 1 includes an outer fire tube 11 and an inner fire tube 12, wherein the outer fire tube 11 is sleeved outside the inner fire tube 12; a combustion disk 2 is provided at the air outlet end; the outer fire tube 11 and the inner fire tube 12 respectively transport combustion gas to the combustion disk 2; the combustion disk 2 includes a first combustion disk 21 and a second combustion disk 22, wherein the second combustion disk 22 and the first combustion disk 21 respectively form combustion areas on the combustion disk 2;
[0026] Among them, the structure of the fire barrel 1 adopts a combination of an outer fire barrel 11 and an inner fire barrel 12, so that the outer fire barrel 11 and the inner fire barrel 12 can be relatively independent or interrelated, so that the adjustment and conversion of large and small powers can be achieved through the combined design of the outer fire barrel 11 and the inner fire barrel 12, thereby meeting different working conditions.
[0027] For reference, the outer fire tube 11 can deliver a large flow of combustible gas to the second combustion disk 22, while the inner fire tube 12 can deliver a small flow of combustible gas to the first combustion disk 21. Therefore, by reasonably controlling the gas flow rates delivered by the inner fire tube 12 and the outer fire tube 11, the corresponding outer fire tube 11 or inner fire tube 12 can be selected according to production needs to achieve the purpose of optimizing the combustion process.
[0028] Taking into account that the main purpose of the inner fire barrel 12 and the outer fire barrel 11 is to transport combustible gases of different flow rates, in order to accurately control the combustion, the inner fire barrel 12 and the outer fire barrel 11 can be coaxial with the central axis of the inner fire barrel 12 and the central axis of the outer fire barrel 11. Through the coaxial setting, the combustion process is made more stable and controllable, the combustion efficiency is improved, and unnecessary energy loss in the combustion process is reduced.
[0029] Secondly, the central axis of the inner fire barrel 12 and the central axis of the outer fire barrel 11 can also be parallel to each other. This design will not cause deviation or eddy current due to the non-parallel axis. The airflow will flow more smoothly, which helps to improve the efficiency of the fire barrel. It should be noted that the inner fire barrel 12 and the outer fire barrel 11 are in a non-parallel state and can also achieve basic functions. Whether the inner fire barrel 12 and the outer fire barrel 11 are parallel is only for optimization.
[0030] In order to achieve combustion without interference, the combustion disk 2 is designed to be a first combustion disk 21 and a second combustion disk 22. Figure 3 and 4As shown, the first combustion disk 21 is arranged at the air outlet end of the inner fire tube 12, and the combustible gas is directly transported to the first combustion disk 21 by the inner fire tube 12; the second combustion disk 22 is sleeved outside the first combustion disk 21, and the second combustion disk 22 is located between the inner wall of the outer fire tube 11 and the outer wall of the inner fire tube 12, and the combustible gas is directly transported to the second combustion disk 22 by the outer fire tube 11.
[0031] The combustion head structure can be installed on a plurality of existing combustion devices to work. For ease of understanding, the combustion head structure is used in a heat treatment furnace as an example: the combustion head corresponds to the furnace of the heat treatment furnace.
[0032] When the workpiece in the furnace needs to be heated, the temperature in the furnace needs to be raised quickly. At this time, the burner head adopts high-power combustion, and the first combustion disk 21 and the second combustion disk 22 both spray flames to provide high temperature for the furnace; the outer fire tube 11 and the inner fire tube 12 simultaneously transport combustible gas to the first combustion disk 21 and the second combustion disk 22, so that the first combustion disk 21 and the second combustion disk 22 are both in a combustion state.
[0033] When the furnace reaches the target temperature, the temperature needs to be maintained in the furnace. At this time, the burner head is burned at low power, and the first combustion disk 21 and the second combustion disk 22 are selectively closed to reduce gas consumption. Usually, the energy consumption of the first combustion disk 21 is less than that of the second combustion disk 22. When the combustion of the first combustion disk 21 can meet the temperature maintenance in the furnace, the combustion state of the second combustion disk 22 is stopped, and only the first combustion disk 21 is retained. At this time, the inner fire tube 12 is maintained to transport combustible gas to the first combustion disk 21, and the outer fire tube 11 stops transporting combustible gas to the second combustion disk 22, so that the furnace can be maintained by the first combustion disk 21 with lower energy consumption.
[0034] Example 2
[0035] Considering that combustion-supporting gas needs to be introduced during combustion to mix the combustion-supporting gas with the combustible gas, and in order to shorten the distance that the mixed gas moves to the combustion disk 2, based on Example 1, as Figure 3 and 4 As shown, the gas mixing structure 3 is arranged in the outer fire tube 11.
[0036] In order to introduce combustible gas into the outer fire tube 11, the gas mixing structure 3 includes an airflow ring 31 and a gas pipe 32. The airflow ring 31 has an outer wall and an inner wall, and a gas channel is formed between the outer wall and the inner wall of the airflow ring 31, and the outer wall is in contact with the inner wall of the outer fire tube 11. It can be understood that the airflow ring 31 is an annular cavity with a hollow channel arranged in the outer fire tube 11, and the hollow channel is used for the combustible gas of the outer fire tube 11 to pass through; the gas pipe 32 allows the combustible gas in the airflow ring 31 to be output.
[0037] In order to mix the combustible gas and the combustion-supporting gas evenly, the gas pipe 32 is arranged in an array along the radial direction of the airflow ring 31, and the two ends of the gas pipe 32 respectively penetrate the inner wall of the airflow ring 31 and extend into the gas channel of the airflow ring 31; an air outlet hole 321 is opened on the gas pipe 32, and the gas in the gas channel is output to the outer fire tube 11 through the air outlet hole 321; wherein, the airflow ring 31 is connected to a first combustible gas inlet pipe 4, one end of which extends from the side wall of the outer fire tube 11 and is connected to the airflow ring 31.
[0038] The above design can fully mix the combustible gas and the combustion-supporting gas, making the combustion more uniform and achieving the best combustion efficiency.
[0039] Furthermore, in order to evenly mix the combustible gas and the combustion-supporting gas in the gas mixing structure 3 , the gas outlet 321 is provided on the leeward side of the gas pipe 32 .
[0040] Example 3
[0041] Since the fire tube 1 includes an inner fire tube 12 and an outer fire tube 11, when only the inner fire tube 12 or the outer fire tube 11 is required to work, the gas mixing structure can be used in a targeted manner, such as Figure 1-4 As shown, the inner fire tube 12 is connected to a second combustible gas intake pipe 5 , the second combustible gas intake pipe 5 extends along the radial direction of the inner fire tube 12 , and the intake end of the second combustible gas intake pipe 5 is located outside the outer fire tube 11 .
[0042] Here, the gas mixing structure of the inner fire tube 12 may be the same as the gas mixing structure of the outer fire tube 11. The specific structure can refer to the gas mixing structure of the outer fire tube 11, which will not be described again here.
[0043] The above design can better adjust the power of the combustion head to adapt it to different power requirements.
[0044] Example 4
[0045] Since the diameter of the inner fire tube 12 is smaller than that of the outer fire tube 11, accordingly, the diameter of the first combustible gas inlet pipe 4 is smaller than the diameter of the second combustible gas inlet pipe 5, so that when only the inner fire tube 12 is used, the combustion head is a low-power combustion head.
[0046] Example 5
[0047] In order to make the burner head act as both a high-power burner head and a low-power burner head at the same time, in this embodiment, Figure 3 As shown, the air inlet end of the inner fire tube 12 is located on a side of the air flow ring 31 close to the first combustion disk 21 , and there is a gap between the air inlet end of the inner fire tube 12 and the air flow ring 31 .
[0048] When a low-power combustion head is required, it is only necessary to introduce combustible gas into the second combustible gas inlet pipe 5. When the combustion-supporting gas enters the mixing structure of the inner fire tube 12, the combustion-supporting gas is mixed with the combustible gas and is directly transported to the second combustion disk 22 through the inner fire tube 12. In other words, combustion only occurs at the second combustion disk 22.
[0049] When a high-power burner head is required, it is only necessary to introduce the combustible gas into the first combustible gas inlet pipe 4. This is because the inlet end of the inner fire tube 12 is located between the gas mixing structure 3 of the outer fire tube 11 and the combustion disk 2, and the mixed gas flows from the gas mixing structure 3 to the combustion disk 2. Therefore, at this time, the combustible gas and the combustion-supporting gas are mixed at the gas mixing structure 3 of the outer fire tube 11, and then flow to the gas outlet end through the inlet end of the inner fire tube 12 and the inlet end of the outer fire tube 11, and burn at the first combustion disk 21 and the second combustion disk 22 at the same time. Of course, in order to evenly mix the combustible gas and the combustion-supporting gas, there is also a certain gap between the inlet end of the inner fire tube 12 and the airflow ring 31.
[0050] Example 6
[0051] Similarly, in order to make the burner head act as both a high-power burner head and a low-power burner head, in this embodiment, Figure 4 As shown, the air inlet end of the inner fire tube 12 is located on the side of the airflow ring 31 away from the first combustion disk 21 .
[0052] At this time, when the burner head needs to be a low-power burner head, it is also only necessary to introduce the combustible gas into the second combustible gas inlet pipe 5. The working process refers to the description when the burner head is a low-power burner head in Example 5.
[0053] The difference is that when the burner head needs to be a high-power burner head, combustible gas must be introduced into the first combustible gas inlet pipe 4 and the second combustible gas inlet pipe 5 at the same time to ensure that the mixed gas burns at the first combustion disk 21 and the second combustion disk 22 at the same time. This is because, in this embodiment, the air intake end of the inner fire tube 12 is located on the outside of the mixing structure of the outer fire tube 11 (the side away from the sleeve). If combustible gas is only introduced into the first combustible gas inlet pipe 4 as in Example 5, there will be no combustible gas in the inner fire tube 12. In this case, the first combustion disk 21 cannot burn, and high-power combustion cannot be achieved. Therefore, in this embodiment, when the burner head needs to be a high-power burner head, combustible gas must be introduced into the first combustible gas inlet pipe 4 and the second combustible gas inlet pipe 5 at the same time to ensure that the mixed gas burns at the first combustion disk 21 and the second combustion disk 22 at the same time.
[0054] One implementation for reference is that, considering that the inner fire tube 12 needs to pass through the airflow ring 31 of the gas mixing structure 3, a space for accommodating the inner fire tube 12 is reserved in the airflow ring 31, and the gas pipe 32 is also distributed only in the space outside the inner fire tube 12. Of course, in order to make the combustible gas and the combustion-supporting gas mix more evenly when only the inner fire tube 12 is used, the structure of the inner fire tube 12 can also be the same as the gas mixing structure in the outer fire tube, and the difference between the two is only the diameter of the gas pipe.
[0055] Example 7
[0056] In order to achieve ignition and flame detection, such as Figure 1-4 As shown, a flame ionization probe 6 and an ignition needle 7 are also provided in the fire tube 1. The flame ionization probe 6 and the ignition needle 7 are both extended along the axial direction of the fire tube 1, and the needle heads of the flame ionization probe 6 and the ignition needle 7 are both located at the gas outlet end of the fire tube 1.
[0057] Example 8
[0058] Since there are inner fire tube 12 and outer fire tube 11, if Figure 1-4 As shown, there are two flame ionization probes 6 and one ignition needle 7 , and the ignition needle 7 is located in the inner fire tube 12 .
[0059] The reason for setting only one ignition needle 7 is that when the combustion head is a low-power combustion head, only the first combustion disk 21 corresponding to the inner fire tube 12 burns, and when the combustion head is a high-power combustion head, the first combustion disk 21 still needs to burn. Therefore, only one ignition needle 7 is set and is located in the inner fire tube 12.
[0060] Similarly, two flame ion probes 6 are set because, when the burner head is a low-power burner head, only the first combustion disk 21 corresponding to the inner fire tube 12 is burning, and at this time, it is only necessary to detect the flame there; and when the burner head is a high-power burner head, both the first combustion disk 21 and the second combustion disk 22 need to burn, then it is necessary to detect the flames of the first combustion disk 21 and the second combustion disk 22 at the same time, therefore, two flame ion probes 6 are set.
[0061] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.
Claims
1. A burner head structure with adaptable power adjustment, comprising a fire tube (1), wherein the two ends of the fire tube (1) are respectively an air inlet end and an air outlet end, and characterized in that: The fire tube (1) comprises an outer fire tube (11) and an inner fire tube (12), wherein the outer fire tube (11) is sleeved outside the inner fire tube (12); a combustion disk (2) is arranged at the gas outlet end; the outer fire tube (11) and the inner fire tube (12) respectively transport combustion gas to the combustion disk (2); The combustion disk (2) comprises a first combustion disk (21) and a second combustion disk (22), wherein the second combustion disk (22) and the first combustion disk (21) respectively form combustion areas on the combustion disk (2); The first combustion disk (21) is arranged at the gas outlet end of the inner fire tube (12), and the inner fire tube (12) directly transports the combustion gas to the first combustion disk (21); The second combustion disc (22) is sleeved outside the first combustion disc (21), and the second combustion disc (22) is located between the inner wall of the outer fire tube (11) and the outer wall of the inner fire tube (12), and the combustion gas is directly transported from the outer fire tube (11) to the second combustion disc (22).
2. The burner head structure with adaptable power adjustment according to claim 1, characterized in that: The outer fire tube (11) is provided with a gas mixing structure (3), and the gas mixing structure (3) comprises: An airflow ring (31), the airflow ring (31) having an outer wall and an inner wall, a gas passage being formed between the outer wall and the inner wall of the airflow ring (31), the outer wall being in contact with the inner wall of the outer fire tube (11); the airflow ring (31) being provided with a hollow passage, the hollow passage being used for the combustion gas of the outer fire tube (11) to pass through; A gas pipe (32), wherein the gas pipe (32) is arranged in an array along the radial direction of the airflow ring (31), and both ends of the gas pipe (32) respectively penetrate the inner wall of the airflow ring (31) and extend into the gas channel of the airflow ring (31); the gas pipe (32) is provided with a gas outlet hole (321), and the gas in the gas channel is output to the outer fire tube (11) through the gas outlet hole (321); The airflow ring (31) is connected to a first combustible gas inlet pipe (4), one end of which extends from the side wall of the outer fire tube (11) and is connected to the airflow ring (31).
3. The burner head structure with adaptable power regulation according to claim 2, characterized in that: The inner fire tube (12) is connected to a second combustible gas intake pipe (5), the second combustible gas intake pipe (5) extends in the radial direction of the inner fire tube (12), and the intake end of the second combustible gas intake pipe (5) is located outside the outer fire tube (11).
4. The burner head structure with adaptable power regulation according to claim 3 is characterized in that: The diameter of the first combustible gas inlet pipe (4) is smaller than the diameter of the second combustible gas inlet pipe (5).
5. The burner head structure with adaptable power regulation according to claim 4, characterized in that: The air inlet end of the inner fire tube (12) is located on a side of the air flow ring (31) close to the first combustion disk (21), and a gap is provided between the air inlet end of the inner fire tube (12) and the air flow ring (31).
6. The burner head structure with adaptable power regulation according to claim 4, characterized in that: The air inlet end of the inner fire tube (12) is located on a side of the airflow ring (31) away from the first combustion disk (21).
7. The burner head structure with adaptable power regulation according to claim 5 or 6, characterized in that: A flame ionization probe (6) and an ignition needle (7) are also provided in the fire tube (1); the flame ionization probe (6) and the ignition needle (7) are both extended along the axial direction of the fire tube (1), and the needle heads of the flame ionization probe (6) and the ignition needle (7) are both located at the gas outlet end of the fire tube (1).
8. The burner head structure with adaptable power regulation according to claim 7, characterized in that: There are two flame ion probes (6), one of which is located in the inner fire tube (12), and the other is located between the inner fire tube (12) and the outer fire tube (11).