CN219571909U - Gas burner - Google Patents

Abstract

The utility model discloses a gas burner which comprises a tubular burner body, wherein the head of the burner body is contracted, and a gas diffusing hole is formed in the peripheral side of the head of the burner body. The gas burner nozzle body is internally provided with a channel for gas to circulate, and the head of the burner nozzle body is in a tubule shape and contracts, so that the pressure is increased when the gas reaches the head of the burner nozzle body, and part of the gas is sprayed outwards from the gas diffusion hole under higher pressure. The gas burner reduces the diameter of the pipeline at the gas diffusing hole, can increase gas resistance, enables gas to be forcefully ejected from the gas diffusing hole towards Zhou Cejiang of the gas burner, ensures overflow quantity of the gas diffusing hole, and is beneficial to increasing the outer flame area of flame, thereby enhancing flame detection signals and avoiding ignition failure or ignition failure caused by extinguishing of small fire in the combustion process.

Description

Gas burner

Technical Field

The utility model relates to the technical field of burners, in particular to a gas burner.

Background

The gas burner is a common part for heating furnace, drying furnace and other furnace bodies and is used for igniting the furnace bodies.

Taking a gas burner in a passivation drying furnace of a zinc plating unit in a cold rolling process as an example, an elongated straight pipe capable of conveying gas is arranged in the gas burner, and because the heat value of the working environment of the gas burner changes and gas impurities are more, a gas diffusing hole of the gas burner is easy to block, and the elongated straight pipe is designed into a drift diameter, so that the gas overflow amount of the gas diffusing hole is extremely easy to be influenced by the fluctuation state of the gas pressure in the elongated straight pipe. Once the gas overflow amount of the gas diffusing hole is small, the flame generated by the gas burner is obviously shifted to influence flame detection, so that the gas burner is frequently extinguished, abnormal in ignition and the like, the temperature in the furnace is greatly increased or greatly reduced to influence the temperature control of the furnace area, and further the production continuity and the quality of finished products of the unit are influenced.

Disclosure of Invention

The utility model aims to provide a gas burner which can improve the ignition effect of the gas burner.

In order to achieve the above purpose, the utility model provides a gas burner which comprises a tubular burner body, wherein the head of the burner body is contracted, and a gas diffusing hole is formed in the periphery of the head of the burner body.

In some embodiments, the head is provided with a plurality of gas diffusing holes, all of which are uniformly dispersed along the peripheral side of the head of the burner body.

In some embodiments, the burner body includes a gas inner tube, an ignition member, and an outer tube; the outer pipe is sleeved with a gas inner pipe; the ignition piece is arranged between the outer pipe and the gas inner pipe and is separated from any one of the outer pipe and the gas inner pipe; the head of the gas inner tube is contracted.

In some embodiments, the ignition member comprises an ignition electrode and a flame detection metal rod; the gas inner pipe, the outer pipe, the ignition electrode and the flame detection metal rod extend in the same direction; the heads of both the ignition electrode and the flame detection metal rod are bent towards the head of the gas inner tube.

In some embodiments, the head of the gas inner tube is within the head of the outer tube along the length of the tube; the head of any one of the ignition electrode and the flame detection metal rod is positioned between the head of the outer tube and the head of the gas inner tube along the length direction of the tube; the head of the outer tube is an equal-diameter tube body.

In some embodiments, an insulating wall is provided between the outer tube and the gas inner tube to isolate the two.

In some embodiments, the burner body further comprises an insulating jacket tube; the outer tube penetrates into the interlayer of the insulating sleeve, and the ignition electrode and the flame detection metal rod penetrate into the inner tube of the insulating sleeve; the inner layer of the insulating sleeve is an insulating wall.

In some embodiments, the insulating jacket sleeve is embodied as a ceramic jacket sleeve.

Compared with the background technology, the gas burner provided by the utility model comprises a tubular burner body and a gas diffusing hole arranged on the periphery of the head part of the burner body; wherein, the head of the burner body is contracted.

The gas burner provided by the utility model reduces the diameter of the pipeline at the gas diffusing hole, can increase gas resistance, enables gas to be ejected from the gas diffusing hole to the peripheral side of the head of the burner body under larger pressure, can increase the radial size of flame along the burner body, is beneficial to controlling the outer flame of the flame in a specific area along the axial direction of the burner body, increases the outer flame detection area of the flame, and enhances flame detection signals. When the pressure of the gas pipeline abnormally fluctuates, the pipe diameter design of the gas burner can enable the outer flame of the flame to be always in a detectable range, so that a flame detection signal is more stable, and the ignition failure or the ignition failure caused by the extinguishing of small fire in the combustion process is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a gas burner according to an embodiment of the present utility model;

fig. 2 is a partial enlarged view of fig. 1.

The burner comprises a burner body 1, a gas inner pipe 11, an outer pipe 12, an ignition electrode 13, a flame detection metal rod 14, an insulating sleeve 15, a gas diffusing hole 2 and a ceramic bracket 3.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The present utility model will be further described in detail below with reference to the drawings and detailed description for the purpose of enabling those skilled in the art to better understand the aspects of the present utility model.

Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of a gas burner provided in an embodiment of the utility model; fig. 2 is a partial enlarged view of fig. 1. In fig. 2, the shape and the burning position of the flame are shown by broken lines on the right side of the gas diffusion hole 2.

The utility model provides a gas burner, which comprises a burner body 1 and a gas diffusing hole 2 arranged on the burner body 1; the burner body 1 is in a thin tube shape, the head of the burner body 1 is contracted, and of course, the burner body 1 is in a thin tube shape, so that the head of the burner body 1 in a contracted state is still in a tube shape, and flames can be sprayed outwards; the gas diffusing hole 2 is formed in the peripheral side of the head of the burner body 1, so that the gas in the burner body 1 can be ejected toward the peripheral side of the head of the burner body 1.

In this embodiment, the fuel gas in the burner body 1 can be sprayed outwards from the head end face of the burner body 1, and if the fuel gas meets sparks at the position, the fuel gas is ignited and then sprayed flame towards the head end face of the burner body 1; the gas in the burner body 1 can be sprayed out towards the head circumference side of the burner body 1 through the gas diffusing hole 2, and when the flame is generated on the head end surface of the burner body 1, the gas sprayed out from the head circumference side of the burner body 1 is ignited and is integrated with the flame on the head end surface of the burner body 1.

The inside of the burner body 1 is provided with a channel through which the fuel gas can flow, and because the head of the burner body 1 is in a tubule shape and contracts, the pressure of the fuel gas increases when reaching the head of the burner body 1, so that part of the fuel gas is sprayed out from the fuel gas diffusing hole 2 at a higher pressure. According to the embodiment, the fuel gas is sprayed out from the fuel gas diffusing hole 2 to the peripheral side of the head of the burner body 1 at a larger pressure, so that the radial size of the flame along the burner body 1 can be increased, the outer flame of the flame can be controlled in a specific area along the axial direction of the burner body 1, and the flame can be conveniently detected. In other words, the flame generated at the head of the burner body 1 in this embodiment is short and wide, which can increase the outer flame detection area of the flame, and is beneficial to enhancing the flame detection signal.

In addition, the flow speed of the channel in the burner body 1 is increased along the flow direction of the fuel gas, and the pressure is increased, so that when the fuel gas is interrupted due to the fluctuation of the fuel gas pressure at the upstream of the channel in the burner body 1, the fuel gas can be continuously sprayed out from the head of the burner body 1 all the time, and when the fuel gas is sprayed out due to the fluctuation of the fuel gas pressure at the upstream of the channel in the burner body 1, more fuel gas can be sprayed out from the fuel gas diffusing hole 2 to the periphery of the head of the burner body 1, so that the outer flame detection area of the flame is ensured. Therefore, the gas burner can improve the stability of flame detection operation, and further improve the stability and reliability of ignition operation.

The gas burner provided by the utility model is further described below with reference to the accompanying drawings and embodiments.

In some embodiments, the head of the burner body 1 is provided with a plurality of gas diffusing holes 2, all the gas diffusing holes 2 are arranged on the head circumference of the burner body 1, and the gas diffusing holes 2 can be uniformly dispersed along the head circumference of the burner body 1.

In some embodiments, the burner body 1 may include a gas inner tube 11, an ignition member, and an outer tube 12 disposed in that order from the inside to the outside; wherein the outer tube 12 is sleeved with the gas inner tube 11, the ignition element is positioned between the outer tube 12 and the gas inner tube 11, and the ignition element is separated from any one of the outer tube 12 and the gas inner tube 11. In this embodiment, the gas flows in the gas inner pipe 11, the head shrinkage of the burner body 1 means the head shrinkage of the gas inner pipe 11, and the head peripheral side of the burner body 1 is provided with the gas diffusing hole 2 means the head peripheral side of the gas inner pipe 11 is provided with the gas diffusing hole 2.

The ignition element may include components for delivering an electrical current and generating an electrical spark. The ignition piece can generate electric sparks, and the ignition of the fuel gas is realized when the electric sparks contact the fuel gas; the ignition part is arranged between the outer pipe 12 and the gas inner pipe 11, and is separated from the outer pipe 12 and the gas inner pipe 11, so that the phenomena of short circuit and electric leakage can not occur on the premise of meeting the ignition operation requirement.

The ignition member may include an ignition electrode 13 and a flame detection metal rod 14, wherein the ignition electrode 13 may transmit electric current and generate electric spark for igniting the gas of the gas inner pipe 11, and the flame detection metal rod 14 is closely adjacent to the head of the gas inner pipe 11 for detecting flame formed at the head of the gas inner pipe 11, as the name implies. Referring to fig. 2, the gas inner pipe 11, the outer pipe 12, the ignition electrode 13 and the flame detection metal rod 14 extend in the same direction, and the head of the ignition electrode 13 and the head of the flame detection metal rod 14 are bent toward the head of the gas inner pipe 11. In general, the ignition electrode 13 and the flame detection metal rod 14 are each in a thin rod shape, and the ignition electrode 13 and the flame detection metal rod 14 are provided on both opposite sides in the circumferential direction of the gas inner tube 11, respectively.

On the basis of the embodiment, the heads of the gas inner tube 11, the ignition electrode 13 and the outer tube 12 can be distributed in sequence along the length direction of the tube; the above-mentioned tube length direction refers to the length direction of the burner body 1, and obviously this is also the length direction of any one of the gas inner tube 11, the ignition electrode 13 and the outer tube 12; the head of the flame detection metal rod 14 is generally aligned with the head of the ignition electrode 13 in the tube length direction.

The fact that the heads of the gas inner tube 11, the ignition electrode 13 and the outer tube 12 are sequentially distributed along the tube length direction means that the head of the outer tube 12 extends beyond the head of the gas inner tube 11 in the tube length direction, in other words, the head of the gas inner tube 11 is located in the head of the outer tube 12 along the tube length direction, and the head of the ignition electrode 13 is located between the head of the outer tube 12 and the head of the gas inner tube 11 along the tube length direction. It can be seen that the gas flowing out from the head of the gas inner tube 11 sequentially contacts the head end face of the gas inner tube 11, the head of the ignition motor and the head end face of the outer tube 12 along the tube length direction, and the outer tube 12 surrounds the gas inner tube 11 and the ignition motor, so that the protection effect is achieved, and the flame form can be restrained.

In the above embodiment, the head of the gas inner pipe 11 is contracted, the head of the outer pipe 12 is usually an equal diameter pipe body, and as for the middle part and the tail part of the outer pipe 12, the shape thereof can be flexibly adjusted according to practical requirements.

In some embodiments, the gas burner further comprises an insulating wall arranged between the outer tube 12 and the gas inner tube 11, the insulating wall can realize the isolation of the outer tube 12 and the gas inner tube 11, and the gas inner tube 11 is sleeved on the outer tube 12, so that the insulating wall is positioned between the inner wall of the outer tube 12 and the outer wall of the gas inner tube 11, the isolation of the inner wall of the outer tube 12 and the outer wall of the gas inner tube 11 is realized, the outer tube 12 and the gas inner tube 11 are insulated, and the short circuit after the outer tube 12 and the gas inner tube 11 are conducted is avoided.

The insulating wall may be considered as part of the insulating jacket 15. The insulating jacket tube 15 comprises an inner tube and an outer tube 12, the inner tube and the outer tube 12 are sleeved with each other to form a jacket, a gap between the inner tube and the outer tube 12 can be regarded as a sandwich of the insulating jacket tube 15, and the insulating wall refers to the inner tube of the insulating jacket tube 15. When the outer tube 12, the gas inner tube 11 and the insulating jacket tube 15 are assembled, the outer tube 12 is arranged in the interlayer of the insulating jacket tube 15 in a penetrating manner, the gas inner tube 11 is arranged in the inner tube of the insulating jacket tube 15, and at the same time, the ignition electrode 13 and the flame detection metal rod 14 often penetrate into the inner tube of the insulating jacket tube 15. Since the insulating jacket tube 15 has insulating properties, it is apparent that the insulating wall, which is one of the structures of the insulating jacket tube 15, also has insulating properties.

The insulating jacket 15 can be embodied as a ceramic jacket, in other words, the insulating jacket 15 is produced from an insulating ceramic material.

When the gas burner provided by the utility model is used, when an ignition command is sent, the small burner gas electromagnetic valve and the air electromagnetic valve of the gas burner are gradually opened, the voltage of the ignition part is increased, electric sparks are generated, gas near the small burner gas electromagnetic valve can be ignited to generate flame, and then the part for detecting flame in the ignition part detects a small fire burning signal of the small burner and then the gas burner is changed into a large burner for burning, so that the small burner is burnt continuously with small fire. In the process, the operation panel, the air solenoid valve and the gas solenoid valve of the gas burner can be used for realizing combustion according to the ratio of gas to air preset by the PLC, so that the accurate control of the temperature in the furnace is ensured.

The gas burner provided by the utility model reduces the diameter of the pipeline at the position of the gas diffusing hole 2, can increase gas resistance, enables gas to be forcefully ejected from the gas diffusing hole 2 towards Zhou Cejiang of the gas burner, ensures overflow quantity of the gas diffusing hole 2, is beneficial to increasing the area of flame out of combustion flame, and can enable the flame out of the combustion flame to be always in a detectable range when the pressure of a gas pipeline abnormally fluctuates, so that flame detection signals are more stable. Of course, the outer flame of the flame is in a detectable range, mainly for guaranteeing the ignition state of the gas burner, and avoiding ignition failure or ignition failure caused by extinguishing of small fire in the combustion process. The gas burner provided by the utility model further enhances the insulation performance of the outer tube 12 and the gas inner tube 11, avoids short circuit caused by the formation of the ceramic support 3, ensures smooth ignition operation, and can also effectively avoid personnel electric shock accidents under the risk of short circuit.

The above describes the gas burner provided by the utility model in detail. The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims (8)

1. The gas burner is characterized by comprising a tubular burner body (1), wherein the head of the burner body (1) is contracted, and a gas diffusing hole (2) is formed in the peripheral side of the head.

2. The gas burner according to claim 1, characterized in that the head is provided with a plurality of the gas diffusing holes (2), all of the gas diffusing holes (2) being uniformly dispersed along the head circumference side of the burner body (1).

3. The gas burner according to claim 1, characterized in that the burner body (1) comprises a gas inner tube (11), an ignition element and an outer tube (12); the outer pipe (12) is sleeved with the gas inner pipe (11); the ignition element is positioned between the outer tube (12) and the gas inner tube (11) and is separated from any one of the outer tube (12) and the gas inner tube (11); the head of the gas inner tube (11) is contracted.

4. A gas burner according to claim 3, characterized in that the ignition element comprises an ignition electrode (13) and a flame detecting metal rod (14); the gas inner tube (11), the outer tube (12), the ignition electrode (13) and the flame detection metal rod (14) extend in the same direction; the heads of the ignition electrode (13) and the flame detection metal rod (14) are bent towards the head of the gas inner tube (11).

5. The gas burner according to claim 4, characterized in that the head of the gas inner tube (11) is located in the head of the outer tube (12) in the tube length direction; the head of any one of the ignition electrode (13) and the flame detection metal rod (14) is located between the head of the outer tube (12) and the head of the gas inner tube (11) along the tube length direction; the head of the outer tube (12) is an equal-diameter tube body.

6. A gas burner according to claim 4 or 5, characterized in that an insulating wall is provided between the outer tube (12) and the gas inner tube (11) for achieving separation of the two.

7. The gas burner according to claim 6, characterized in that the burner body (1) further comprises an insulating jacket tube (15); the outer tube (12) is arranged in the interlayer of the insulating sleeve (15) in a penetrating way, and the ignition electrode (13) and the flame detection metal rod (14) penetrate into the inner tube of the insulating sleeve (15); the inner layer of the insulating sleeve (15) is the insulating wall.

8. The gas burner according to claim 7, characterized in that the insulating jacket tube (15) is in particular a ceramic jacket tube.