A molten fuel burner having an automatic ignition device

Abstract

The utility model relates to a kind of melt combustor with automatic ignition device. Including combustor body, including at least one row of flame spout being spaced along its length direction;Ignition device includes ignition head, temperature rising module and linear drive mechanism, temperature rising module can be at least raised to the ignition temperature of fuel mixture after starting ignition head temperature, linear drive mechanism drives ignition head to move along the length direction of combustor body to sequentially pass each flame spout, fuel mixture of flame spout is ignited by ignition head, can automatically complete the ignition of each flame spout, without manual intervention, with the advantages of safe and efficient.

Description

Technical Field

[0001] This utility model relates to a melt burner with an automatic ignition device. Background Technology

[0002] The melting burner is a crucial piece of equipment in the rod-drawing process for melting quartz fibers. It needs to deliver a stable, high-pressure, high-temperature flame to heat the quartz rods at each flame nozzle to over 1800 degrees Celsius, thus melting the quartz rods. A typical melting burner includes 1-2 rows of flame nozzles, each corresponding to a quartz rod for heating. A typical melting burner contains 100-200 flame nozzles, an inlet for the high-pressure fuel mixture, and a chamber to hold the fuel mixture. When using the melting burner, each flame nozzle must first be ignited. Traditionally, this is done manually, which presents two main problems: first, safety concerns, as the flame temperature after ignition can reach 2000 degrees Celsius, and even slight mishandling can result in burns to the operator; second, because the fuel mixture is ejected at high speed from the flame nozzles, traditional soft-fire ignition often results in the flame being blown out, and only a few flame nozzles can be ignited at a time, leading to tedious, inefficient, and time-consuming processes. Utility Model Content

[0003] Based on the above problems, this utility model provides a melting burner with an automatic ignition device, which can automatically ignite each flame nozzle without manual intervention, and has the advantages of safety and high efficiency.

[0004] The technical solution of this utility model is as follows: A melting burner with an automatic ignition device, comprising:

[0005] The burner body includes at least one row of flame nozzles spaced apart along its length.

[0006] The ignition device includes an ignition head, a heating module, and a linear drive mechanism. After the heating module is activated, it can raise the temperature of the ignition head to at least the ignition point temperature of the fuel mixture. The linear drive mechanism drives the ignition head to move along the length of the burner body to pass through each flame nozzle in sequence, and ignites the fuel mixture ejected from the flame nozzle through the ignition head.

[0007] The beneficial effects of this technical solution are as follows: When using a molten burner with an automatic ignition device, the ignition device is manually activated when needed. Its heating module automatically raises the temperature of the ignition head to or above the ignition point of the fuel mixture within the burner. With the activation of the linear drive mechanism, the ignition head moves linearly along the length of the burner body, sequentially passing through each flame nozzle. Since the temperature of the ignition head reaches the ignition point of the fuel mixture, the fuel mixture ejected from the flame nozzle is ignited upon contact with the ignition head. As the ignition head sequentially passes through each flame nozzle, each flame nozzle is ignited in turn. Once all flame nozzles are ignited, the ignition device can be shut off. Therefore, compared to existing technologies, this molten burner can automatically ignite each flame nozzle, and the entire process is fast, efficient, requires no manual intervention, and is safer.

[0008] Based on the above solution, further improvements are made as follows: the heating module includes a resistance wire heating module, and the ignition head is an electric heating rod. Since the gas flow from the flame nozzle is a high-speed flow, if a conventional flame is used for ignition, it may be easily blown out. However, this problem does not exist when using an electric heating rod.

[0009] Based on the above solution, further improvements are made as follows: the heating module includes a combustible gas supply pipe and an electric igniter. The combustible gas supply pipe is connected to the ignition head to supply high-speed flowing combustible gas to the ignition head, and the electric igniter ignites the combustible gas to form a jet flame at the ignition head. By supplying high-speed flowing combustible gas to form a "hard" flame for ignition, it avoids being blown out by the high-speed gas flow from the flame nozzle of the molten burner.

[0010] Based on the above solution, a further improvement is made as follows: an electromagnetic shut-off valve is installed on the combustible gas supply pipe. By installing the electromagnetic shut-off valve, the combustible gas supply pipe can be shut off after ignition is completed, thereby automatically extinguishing the ignition flame and avoiding waste of combustible gas.

[0011] Based on the above scheme, the following improvements are made: the combustible gas supply pipe and the burner body share the same fuel mixture supply source.

[0012] Based on the above scheme, the following improvements are made: the linear drive mechanism includes a stepper motor and a lead screw and nut mechanism. The lead screw and nut mechanism includes a lead screw and a lead screw nut. The lead screw nut is fixed relative to the ignition head. The stepper motor drives the lead screw to rotate, thereby driving the lead screw nut and the ignition head to move.

[0013] Based on the above solution, further improvements are made as follows: the linear drive mechanism includes a guide rail arranged along the length of the burner body, and a slider is provided on the ignition head, with the slider slidingly engaged with the guide rail. The arrangement of the guide rail and slider ensures that the ignition head passes more accurately through each flame nozzle, guaranteeing a higher ignition success rate.

[0014] Based on the above scheme, further improvements are made as follows: the linear drive mechanism is connected to a controller, which controls the movement speed of the ignition head to meet the following requirements: the movement speed between flame nozzles is greater than the movement speed at the flame nozzle. Since the ignition of the fuel mixture requires a certain amount of time, the speed of the ignition head at the flame nozzle needs to be as slow as possible, while in the area between the flame nozzles, it is desirable to move as fast as possible to improve ignition efficiency. This is because the number of flame nozzles on a molten burner is generally dozens to hundreds, and excessively long ignition time wastes fuel and affects the molten wire drawing efficiency.

[0015] Based on the above scheme, further improvements are made as follows: there are two rows of flame nozzles, symmetrically arranged on two opposite sides of the burner body, with two corresponding ignition heads, each corresponding to one of the two rows of flame nozzles. The two rows of flame nozzles share the same heating module and linear drive mechanism. Attached Figure Description

[0016] Figure 1 This is a front view structural schematic diagram of Embodiment 1 of the molten burner with an automatic ignition device of this utility model;

[0017] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0018] Figure 3 for Figure 1 Side view sectional schematic diagram;

[0019] Figure 4 A diagram showing the relationship between the ignition head's velocity and the flame nozzle's position;

[0020] Figure 5 This is a diagram showing the relationship between the ignition head's velocity and the flame nozzle's position in another embodiment.

[0021] Figure 6 A side view of Embodiment 2 of the molten burner with an automatic ignition device of this utility model;

[0022] Figure 7 A side view of Embodiment 3 of the molten burner with an automatic ignition device of this utility model;

[0023] In the diagram: 1-quartz rod, 2-burner body, 21-flame nozzle, 3-ignition device, 31-ignition head, 32-linear drive mechanism, 321-stepper motor, 322-screw and nut mechanism, 3221-screw, 3222-nut, 323-guide rail, 324-slider, 325-connecting rod, 33-heating module, 331-resistance wire heating module, 332-electric heating rod, 333-combustible gas supply pipe, 334-electric igniter, 335-wire, 4-bearing. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0026] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0027] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0028] Example 1 of the present invention is a melting burner with an automatic ignition device: (e.g.) Figure 1-4As shown, the molten burner with an automatic ignition device includes a burner body 2 and an ignition device 3, as well as a gas source (not shown) for supplying fuel mixture to the molten burner and a gas source for supplying combustible gas to the ignition device 3.

[0029] Specifically, such as Figure 1 , 3 As shown, the burner body 2 is a rectangular hollow shell structure. A row of flame nozzles 21 is provided on the front and rear sides. Each row of flame nozzles 21 includes 50 flame nozzles 21 evenly distributed in a straight line at equal intervals. There are a total of 100 flame nozzles 21 on the burner body 2. In other embodiments, the number of flame nozzles 21 can be changed, but they should be arranged symmetrically on the front and rear end faces as much as possible.

[0030] The ignition device 3 includes an ignition head 31, a heating module 33, and a linear drive mechanism 32. After activation, the heating module 33 raises the temperature of the ignition head 31 to at least the ignition point of the fuel mixture. The linear drive mechanism 32 drives the ignition head 31 to move along the length of the burner body 2, sequentially passing through each flame nozzle 21, igniting the fuel mixture ejected from the flame nozzles 21. The heating module 33 includes a combustible gas supply pipe 333 and an electric igniter 334. The combustible gas supply pipe 333 is connected to the ignition head 31 to supply high-speed flowing combustible gas. The electric igniter 334 ignites the combustible gas to form a jet flame at the ignition head 31. By supplying high-speed flowing combustible gas, a "hard" flame for ignition is formed, preventing it from being extinguished by the high-speed gas flow ejected from the flame nozzles 21 of the molten burner. An electromagnetic shut-off valve is installed on the combustible gas supply pipe 333. By setting an electromagnetic shut-off valve, the combustible gas supply pipe 333 can be shut off after ignition, thereby automatically extinguishing the ignition flame and avoiding waste of combustible gas. In this embodiment, the combustible gas supply pipe 333 and the burner body 2 share the same fuel mixture supply source.

[0031] The linear drive mechanism 32 includes a stepper motor 321 and a lead screw and nut mechanism 322. The lead screw and nut mechanism 322 includes a lead screw 3221 and a lead screw nut 3222. The lead screw nut 3222 is fixed relative to the ignition head 31. The stepper motor 321 drives the lead screw 3221 to rotate, thereby driving the lead screw nut 3222 and the ignition head 31 to move. The linear drive mechanism 32 includes a guide rail 323 arranged along the length of the burner body 2. A slider 324 is provided on the ignition head 31, and the slider 324 slides in a guide-sliding engagement with the guide rail 323. The arrangement of the guide rail 323 and the slider 324 makes the position of the ignition head 31 more accurate as it passes through each flame nozzle 21, ensuring a high ignition success rate.

[0032] The linear drive mechanism 32 is connected to a controller, which controls the movement speed of the ignition head 31 to meet the following requirements: the movement speed between the flame nozzles 21 is greater than the movement speed at the flame nozzles 21. Since the ignition of the fuel mixture requires a certain amount of time, the speed of the ignition head 31 at the flame nozzles 21 needs to be as slow as possible, while in the area between the flame nozzles 21, it is desirable to move as fast as possible to improve ignition efficiency. This is because the number of flame nozzles 21 on a molten burner is generally dozens to hundreds; excessively long ignition time wastes fuel and affects the molten wire drawing efficiency. In this embodiment, the relationship between the movement speed of the ignition head 31 and the position of the flame nozzles 21 satisfies... Figure 4 The curve shown illustrates that as the ignition head 31's velocity decreases to 0 at the flame nozzle 21 and then moves towards another flame nozzle 21, it includes an acceleration phase, a constant velocity phase, and a deceleration phase. In other embodiments, such as... Figure 5 As shown, the ignition head 31's velocity drops to 0 at the flame nozzle 21, and then during its movement toward another flame nozzle 21, it includes a parabolic acceleration phase and a deceleration phase.

[0033] There are two rows of flame nozzles 21, symmetrically arranged on two opposite sides of the burner body 2. There are two corresponding ignition heads 31, which are respectively set for the two rows of flame nozzles 21. The two rows of flame nozzles 21 share the same heating module 33 and linear drive mechanism 32.

[0034] In the use of a molten burner with an automatic ignition device 3, when ignition is required, the ignition device 3 is manually activated. Its heating module 33 automatically raises the temperature of the ignition head 31 to or above the ignition point of the fuel mixture within the burner. With the activation of the linear drive mechanism 32, the ignition head 31 is driven to move linearly along the length of the burner body 2. The ignition head 31 sequentially passes through each flame nozzle 21. Since the temperature of the ignition head 31 reaches the ignition point of the fuel mixture, the fuel mixture ejected from the flame nozzle 21 is ignited upon contact with the ignition head 31. As the ignition head 31 sequentially passes through each flame nozzle 21, each flame nozzle 21 is ignited in turn. Once all are ignited, the ignition device 3 can be shut off. Therefore, compared to existing technologies, the molten burner of this solution can automatically ignite each flame nozzle 21, and the entire process is fast, efficient, requires no manual intervention, and is safer.

[0035] Embodiment 2 of the present invention is a melting burner with an automatic ignition device 3: (e.g.) Figure 6As shown, the difference from Embodiment 1 is that its ignition head 31 and heating module 33 adopt the following scheme: the heating module 33 includes a resistance wire heating module 331, and the ignition head 31 is an electric heating rod 332. Since the airflow ejected from the flame nozzle 21 is a high-speed airflow, if an ordinary flame is used for ignition, it may be easily blown out, but this problem does not exist when using the electric heating rod 332.

[0036] Embodiment 3 of the present invention is a melting burner with an automatic ignition device 3: (e.g.) Figure 7 As shown, the difference from Embodiment 1 is that the two ignition heads 31 are connected by a connecting rod 325, and a guide rail 323, a slider 324 and a lead screw and nut mechanism 322 are provided in the middle of the connecting rod.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.

Claims

1. A melting burner with an automatic ignition device, comprising: The burner body includes at least one row of flame nozzles spaced apart along its length. Its characteristic is that it further includes: The ignition device includes an ignition head, a heating module, and a linear drive mechanism. After the heating module is activated, it can raise the temperature of the ignition head to at least the ignition point temperature of the fuel mixture. The linear drive mechanism drives the ignition head to move along the length of the burner body to pass through each flame nozzle in sequence, and ignites the fuel mixture ejected from the flame nozzle through the ignition head.

2. A melting burner with an automatic ignition device according to claim 1, characterized in that, The heating module includes a resistance wire heating module, and the ignition head is an electric heating rod.

3. A melting burner with an automatic ignition device according to claim 1, characterized in that, The heating module includes a combustible gas supply pipe and an electric igniter. The combustible gas supply pipe is connected to the ignition head to supply high-speed flowing combustible gas to the ignition head, and the electric igniter can ignite the combustible gas to form a jet flame at the ignition head.

4. A melting burner with an automatic ignition device according to claim 3, characterized in that, An electromagnetic shut-off valve is installed on the combustible gas supply pipe.

5. A melting burner with an automatic ignition device according to claim 4, characterized in that, The combustible gas supply pipe and the burner body share the same fuel mixture supply source.

6. A melting burner with an automatic ignition device according to claim 1, characterized in that, The linear drive mechanism includes a stepper motor and a lead screw and nut mechanism. The lead screw and nut mechanism includes a lead screw and a lead nut. The lead nut is fixed relative to the ignition head. The stepper motor drives the lead screw to rotate, thereby driving the lead nut and the ignition head to move.

7. A melting burner with an automatic ignition device according to claim 6, characterized in that, The linear drive mechanism includes a guide rail arranged along the length of the burner body, and a slider is provided on the ignition head, which slides in a guide-sliding engagement with the guide rail.

8. A melting burner with an automatic ignition device according to claim 1, characterized in that, The linear drive mechanism is connected to a controller, which controls the movement speed of the ignition head to meet the following requirements: the movement speed between the flame nozzles is greater than the movement speed at the flame nozzle.

9. A melting burner with an automatic ignition device according to claim 1, characterized in that, There are two rows of flame nozzles, symmetrically arranged on two opposite sides of the burner body. There are two corresponding ignition heads, each corresponding to one of the two rows of flame nozzles. The two rows of flame nozzles share the same heating module and linear drive mechanism.

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