Hearth high-energy ignition device

Abstract

The utility model relates to a hearth high-energy ignition device which comprises an electric ignition device, a first spray head and a second spray head, the spraying path of the first spray head is in a straight line shape, the spraying path of the second spray head is in a divergent shape, and the second spray head and the first spray head are arranged in a rotating mode relative to each other. And fuel selectively enters the first spray head or the second spray head through the path switching assembly. By means of angle matching between the first spray head and the second spray head and combination of the rotating effect of the second spray head, during ignition, ignition can be conducted through high-concentration fuel formed at the ignition power position by means of the injection path of the first spray head, then flame diffusion is achieved in the injection and rotating process of the second spray head, and ignition efficiency is improved. Compared with an ignition gun in the prior art, in the whole process, the ignition speed is higher, and the efficiency is higher.

Description

Technical Field

[0001] The utility model belongs to the technical field of boiler ignition, and particularly relates to a high-energy ignition device for a furnace chamber. Background Art

[0002] In the current thermal power generation technology, a high-energy ignition device (ignition gun) is used to ignite the coal entering the furnace chamber. The ignition gun mainly consists of an atomizing nozzle and an electric sparking device. Specifically, when the atomizing nozzle sprays fuel oil, the fuel oil is sprayed in a divergent shape to meet the ignition requirements of a large range. And in order to prevent fuel backflow during the fuel supply process, which may cause potential safety hazards, the electric sparking device is usually set at a certain distance from the fuel injection source (i.e., the nozzle position). The problem with this structural setting is that due to the divergent spraying method, the fuel itself has already diffused in the space, and the electric sparking point is at a certain distance from the injection source, resulting in a relatively low fuel distribution concentration at the sparking point, which is likely to slow down the sparking speed and reduce the ignition efficiency of the entire ignition gun. Summary of the Utility Model

[0003] The purpose of this part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Simplifications or omissions may be made in this part, as well as in the abstract and title of the application, to avoid obscuring the purpose of this part, the abstract, and the title. However, such simplifications or omissions shall not be used to limit the scope of the utility model.

[0004] In view of the following technical problems existing in the prior art: in the current technology, due to factors such as the fuel injection supply method and the setting of the sparking point, the fuel distribution concentration at the sparking point is relatively low, which is likely to reduce the ignition efficiency. To solve this technical problem, the utility model provides the following technical solutions:

[0005] A high-energy ignition device for a furnace chamber, including an electric sparking device, further comprising:

[0006] A first nozzle and a second nozzle, the spraying path of the first nozzle is linear, the spraying path of the second nozzle is divergent, and the second nozzle is rotatably arranged relative to the first nozzle;

[0007] A path switching component, through which fuel can be selectively introduced into the first nozzle or the second nozzle;

[0008] Wherein:

[0009] The second nozzle rotates during operation;

[0010] An intersection point is formed between the spraying paths of the first nozzle and the second nozzle, and the electric sparking device is arranged at the intersection point.

[0011] As a preferred technical solution for a furnace high-energy ignition device, the first nozzle includes an injection section and a supply section, an angle is formed between the injection section and the supply section, and the second nozzle is rotationally matched with the supply section.

[0012] As an optimal technical solution for a furnace high-energy ignition device, a second storage chamber is constructed in the second nozzle, one end of which is open, and a feed pipe chamber and an annular chamber are provided in the supply section. The annular chamber is communicated with the feed pipe chamber, and one side of the second storage chamber is connected to the annular chamber and a turbine blade is fixedly provided.

[0013] As an optimal technical solution for a furnace high-energy ignition device, a first accumulation chamber is provided in the supply section, one side of which is open, and the annular chamber is connected to the feed tube chamber through a plurality of through holes. A sealing portion is movably provided in the feed tube chamber, and one side of the first accumulation chamber or the through hole is sealed during its movement, and the sealing portion moves through a path switching component.

[0014] As an optimal technical solution for a furnace high-energy ignition device, the sealing part includes an end sealing part and a ring sealing part that are fixedly connected. The ring sealing part slides with the feed pipe cavity and acts on the through hole, and the end sealing part acts on the first accumulation cavity.

[0015] As a preferred technical solution for a furnace high-energy ignition device, the path switching assembly includes a permanent magnet part and an excitation part, the permanent magnet part is fixedly connected to the end seal part, and the excitation part is arranged at a fixed position in the feed tube cavity.

[0016] The beneficial effect of the furnace high-energy ignition device provided by the utility model is that the utility model cooperates with the angle between the first nozzle and the second nozzle, combined with the rotation effect of the second nozzle, when igniting, the high-concentration fuel formed at the ignition point by the injection path of the first nozzle can be used for ignition, and then the flame is spread during the injection and rotation of the second nozzle. Compared with the ignition gun in the prior art, the whole process has a faster ignition speed, thereby making the ignition efficiency of the whole device higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0018] Figure 1 It is a three-dimensional diagram of part of the structure of the utility model.

[0019] Figure 2 This is the official drawing of the structure shown in Figure 1 the present utility model.

[0020] Figure 3 This is the internal display drawing of the structure shown in Figure 1 the present utility model.

[0021] Figure 4 This is another perspective view of Figure 3 in the present utility model.

[0022] Figure 5 This is the schematic structural diagram of the second nozzle in the present utility model.

[0023] Figure 6 This is the three-dimensional cutaway schematic diagram of the plugging part in the present utility model.

[0024] Figure 7 This is the schematic diagram of the spraying angle between the first nozzle and the second nozzle in the present utility model.

[0025] Reference numerals: 1, the first nozzle; 101, the spraying section; 102, the supply section; 2, the second nozzle; 3, the path switching component; 301, the permanent magnet part; 302, the exciting part; 4, the second storage cavity; 5, the feed pipe cavity; 6, the annular cavity; 7, the turbine blade; 8, the first storage cavity; 9, the perforation; 10, the plugging part; 10a, the end plugging part; 10b, the annular plugging part. Detailed implementation manners

[0026] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe the detailed implementation manners of the present utility model with reference to the accompanying drawings of the specification.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0028] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that can be included in at least one implementation manner of the present utility model. The appearances of "in one embodiment" in different places in this specification do not all refer to the same embodiment, nor are they separate or alternative embodiments that are mutually exclusive with other embodiments.

[0029] Next, the present utility model will be described in detail with reference to the schematic diagrams. When describing the embodiments of the present utility model in detail, for the convenience of explanation, the cross-sectional views showing the device structure will be locally enlarged in a non-general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present utility model herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0030] Referring Figure 1 and Figure 7 , an embodiment of the present utility model provides a high-energy ignition device for a furnace, which includes an electric sparking device (not shown in the figure), and also includes the following parts:

[0031] A first nozzle 1 and a second nozzle 2, the spraying path of the first nozzle 1 is linear, and the spraying path of the second nozzle 2 is divergent, specifically conical, and the second nozzle 2 is arranged to rotate relative to the first nozzle 1;

[0032] A path switching component 3. Specifically, when fuel is passed, the fuel enters only into the first nozzle 1 or only into the second nozzle 2 under the action of the path switching component 3;

[0033] Wherein:

[0034] The second nozzle 2 can rotate itself during the spraying operation;

[0035] There is an intersection point formed between the linear spraying path of the first nozzle 1 and the conical spraying range of the second nozzle 2, and the electric sparking device (or the action point of the electric sparking device) is arranged on the spraying path of the first nozzle 1, preferably at the intersection point, so as to ignite at the intersection point or on the spraying path of the first nozzle 1;

[0036] When the present utility model realizes the ignition operation, it can be understood as having two successive stages. The first stage is fuel spraying by the first nozzle 1, and the second stage is fuel spraying by the second nozzle 2. Specifically:

[0037] In the first stage, the fuel injection path is linear, so that the fuel can be kept highly concentrated in the furnace space. At this time, the ignition efficiency is relatively high when using an electric spark for ignition. After that, it will enter the second stage. Due to the existence of the intersection point, the fuel injected by the second nozzle 2 is directly ignited, and the flame is spread to the entire divergent injection cone surface through its own rotation, realizing that the fuel on the injection path of the second nozzle 2 is completely ignited, so as to finally meet the large-range fire-spraying requirement, and thus the pulverized coal in the furnace space can be ignited in a large range. Under the condition of high-concentration fuel supply, the electric ignition can occur instantaneously. The switching between the first stage and the second stage also occurs in a very short time to complete the entire ignition process in a relatively short time. Compared with the prior art, the ignition efficiency of the present utility model is higher.

[0038] Further, referring to Figure 2 , the first nozzle 1 includes an injection section 101 and a supply section 102. Its nozzle surface is arranged on the injection section 101. An included angle is formed between the injection section 101 and the supply section 102. The second nozzle 2 is rotationally matched with the supply section 102, and the axis of the second nozzle 2 is kept consistent with the supply section 102. The cooperation of the included angle realizes the formation of the intersection point. This setting realizes the combination of the first nozzle 1 and the second nozzle 2, which helps to reduce the volume of the device and thus reduce the space occupation; for the setting method of the electric ignition device, it can be fixedly connected to the inner wall of the furnace or fixedly connected to the first nozzle 1 by setting a connecting part.

[0039] Further, referring to Figure 3 and Figure 4 , for the rotation mode of the second nozzle 2, specifically, a second storage cavity 4 is constructed in the second nozzle 2, which is communicated with a plurality of nozzles on the second nozzle 2. One end of the second storage cavity 4 is open for the entry of fuel. A feeding pipe cavity 5 and an annular cavity 6 are arranged in the supply section 102. The feeding pipe cavity 5 is used to communicate with the fuel source. One side of the annular cavity 6 is also open and is closely attached to the open side of the feeding pipe cavity 5 to achieve the effect of always remaining interconnected during relative movement. A circle of turbine blades 7 is fixedly arranged on the open side of the second storage cavity 4. The fuel enters the annular cavity 6 from the feeding pipeline and then reaches the second storage cavity 4. During this process, the fuel will pass through the turbine blades 7, thereby providing a rotational driving force for the second nozzle 2. The function of this structure enables the rotation of the second nozzle 2 to be carried out by means of the pressure provided during fuel supply, thus further simplifying the structure of the device.

[0040] Further, referring to Figure 3 and Figure 4A first storage chamber 8 is provided in the supply section 102, which is connected to a plurality of nozzles on the first nozzle 1. One side of the first storage chamber 8 is also open and connected to the supply tube chamber 5. The annular chamber 6 is connected to the supply tube chamber 5 through a plurality of perforations 9. A blocking portion 10 is movably provided in the supply tube chamber 5. The blocking portion 10 can block the open side or the perforations 9 of the first storage chamber 8 during its movement, so that the fuel only enters the first storage chamber 8 or the second storage chamber 4, thereby achieving the effect that the fuel is only sprayed by the first nozzle 1 or the second nozzle 2. The movement of the blocking portion 10 is driven by the path switching component 3.

[0041] Further, see Figure 3 , Figure 4 and Figure 6 The sealing part 10 includes an end sealing part 10a and a ring sealing part 10b which are fixedly connected. The ring sealing part 10b is annular and maintains a sliding fit with the feed tube cavity 5. The through hole 9 can be sealed during its sliding process. The end sealing part 10a is in the shape of a circular plate. When it moves, it can form a seal on the open side of the first accumulation chamber 8. During the movement of the entire sealing part 10, when the ring sealing part 10b forms a seal on the through hole 9, the end seal leaves the open part of the first accumulation chamber 8. Conversely, when the end sealing part 10a seals the first accumulation chamber 8, the ring sealing part 10b leaves the through hole 9.

[0042] Further, see Figure 3 and Figure 4 The path switching component 3 includes a permanent magnet part 301 and an excitation part 302. The permanent magnet part 301 is fixedly connected to the end sealing part 10a. The excitation part 302 is arranged at a fixed position in the feeding tube cavity 5 and acts on the permanent magnet part 301. Specifically, the permanent magnet part 301 can be a permanent magnet, and the excitation part 302 can be an electromagnet. The electromagnet forms an attractive force or a repulsive force on the permanent magnet by creating magnetic fields in different directions, so as to drive the permanent magnet to move, thereby realizing the driving of the entire sealing part 10. The linkage process between the electromagnet and the electric ignition device is controlled by the corresponding power supply part outside the entire unit.

[0043] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A high-energy ignition device for a furnace, including an electric sparking device, characterized in that: Also includes: A first nozzle (1) and a second nozzle (2), wherein the spray path of the first nozzle (1) is linear, and the spray path of the second nozzle (2) is divergent, and the second nozzle (2) is arranged to rotate relative to the first nozzle (1); A path switching component (3), through which the fuel selectively enters the first nozzle (1) or the second nozzle (2); in: The second nozzle (2) keeps rotating during operation; An intersection is formed between the spray paths of the first spray head (1) and the second spray head (2), and the electric ignition device is arranged at the intersection.

2. The high-energy furnace ignition device according to claim 1, characterized in that: The first nozzle (1) comprises an injection section (101) and a supply section (102), an angle is formed between the injection section (101) and the supply section (102), and the second nozzle (2) is rotationally matched with the supply section (102).

3. The high-energy furnace ignition device according to claim 2, characterized in that: The second nozzle (2) is provided with a second storage chamber (4), one end of which is open. The supply section (102) is provided with a feed pipe chamber (5) and an annular chamber (6). The annular chamber (6) is connected to the feed pipe chamber (5). One side of the second storage chamber (4) is connected to the annular chamber (6) and a turbine blade (7) is fixedly provided thereon.

4. The high-energy furnace ignition device according to claim 3, characterized in that: A first storage chamber (8) is provided in the supply section (102), one side of which is open. The annular chamber (6) is connected to the feed tube chamber (5) via a plurality of through holes (9). A blocking portion (10) is movably provided in the feed tube chamber (5) to block one side of the first storage chamber (8) or the through holes (9) during movement. The blocking portion (10) is movable via a path switching component (3).

5. The high-energy furnace ignition device according to claim 4, characterized in that: The blocking portion (10) comprises an end sealing portion (10a) and a ring sealing portion (10b) which are fixedly connected. The ring sealing portion (10b) is slidably matched with the feed tube cavity (5) and acts on the through hole (9). The end sealing portion (10a) acts on the first storage cavity (8).

6. The high-energy ignition device for furnace according to claim 5, characterized in that: The path switching component (3) comprises a permanent magnet part (301) and an excitation part (302); the permanent magnet part (301) is fixedly connected to the end seal part (10a); and the excitation part (302) is arranged at a fixed position in the feed tube cavity (5).

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