Ignition device for horizontal burner

Abstract

An ignition device for a horizontal burner, characterized in that it includes a high-energy ignition rod, an ignition gun, a cylinder, a dust cover, a fixed support, a movable support, a fastening assembly and a locking piece; the high-energy ignition rod and the ignition gun are installed in the burner, the discharge head of the high-energy ignition rod extends into the corresponding area of ​​the nozzle of the ignition gun, the cylinder is fixed on the fixed support, the telescopic rod position of the cylinder head is equipped with a dust cover, the fixed support is fixed to the burner by a fastening assembly, and the high-energy ignition rod is fixed to the movable support by a locking piece. The ignition device can perform ignition operations safely and efficiently, with a high ignition success rate, reducing unnecessary repeated ignition and purging work, and improving production efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of hot blast stoves, in particular to an ignition device for a horizontal burner, which is used for the debugging of the horizontal hot blast stove burner and the ignition of gas before production. Background Art

[0002] Hot blast furnace is a thermal power device widely used in the fields of steel, metallurgy, cement, etc. It mainly provides heat source for material heating, drying and other functions. The part responsible for fuel combustion is called burner. The burner has fuel channel and air channel, which are divided into premixed and non-premixed types. In either case, the fuel needs to be ignited and burned in a "small fire to big fire" manner. Fuel is divided into pulverized coal, light oil or heavy oil, and gas. The ignition devices of different fuels are different.

[0003] Gas is divided into high calorific value gas and low calorific value gas according to its calorific value. High calorific value gas usually includes natural gas, liquefied gas, coke oven gas, etc., and low calorific value gas includes converter gas, blast furnace gas, etc. Usually, the ignition of these gases is completed inside the burner, which requires a set of ignition devices to be designed inside the burner to ensure safe, stable, and successful ignition under multiple working conditions to improve production efficiency. In the prior art, due to the layout characteristics of horizontal burners, especially the multi-nozzle structure, the density of the fuel is lower than that of the air, and once it leaves the burner, it flows upward, which easily causes ignition failure. When the ignition fails, the gas needs to be turned off and an inert gas purge is performed to ensure the safety of the next ignition and combustion of the equipment, which reduces production efficiency and economic benefits. Utility Model Content

[0004] The purpose of the utility model is to provide an ignition device for a horizontal burner in view of the defects of the above-mentioned existing horizontal burners, which can perform ignition operations safely and efficiently, has a high ignition success rate, reduces unnecessary repeated ignition and purging work, and improves production efficiency.

[0005] Technical Solution

[0006] In order to achieve the above technical purpose, the utility model provides an ignition device for a horizontal burner, characterized in that it includes a high-energy ignition rod, an ignition gun, a cylinder, a dust cover, a fixed support, a movable support, a fastening assembly and a locking piece; the high-energy ignition rod 1 and the ignition gun are installed in the burner, the discharge head of the high-energy ignition rod extends into the corresponding area of ​​the nozzle of the ignition gun, the cylinder is fixed on the fixed support, the telescopic rod position of the cylinder head is equipped with a dust cover, the fixed support is fixed to the burner by a fastening assembly, and the high-energy ignition rod is fixed to the movable support by a locking piece.

[0007] In one embodiment, the ignition gun includes a support tube, a gas tube and a swirl blade, and the support tube and the gas tube are both supported and positioned in the burner by the swirl blade.

[0008] In one of the embodiments, a cooling air channel is provided on the fixed support.

[0009] In one embodiment, the fastening assembly includes bolts, nuts and washers, and the fixing support is connected to the central channel flange on the burner through the bolts, nuts and washers.

[0010] In one embodiment, the locking member includes a locking bolt and a handle nut, and the position of the high-energy ignition rod is adjusted by the locking bolt and the handle nut.

[0011] In one embodiment, the gas pipe is placed at the lower end of the high-energy ignition rod.

[0012] Beneficial Effects

[0013] The utility model provides an ignition device for a horizontal burner, characterized in that it includes a high-energy ignition rod, an ignition gun, a cylinder, a dust cover, a fixed support, a movable support, a fastening assembly and a locking piece; the high-energy ignition rod 1 and the ignition gun are installed in the burner, the discharge head of the high-energy ignition rod extends into the corresponding area of ​​the nozzle of the ignition gun, the cylinder is fixed on the fixed support, the telescopic rod position of the cylinder head is equipped with a dust cover, the fixed support is fixed to the burner through a fastening assembly, and the high-energy ignition rod is fixed to the movable support through a locking piece. The ignition device can perform ignition operations safely and efficiently, with a high ignition success rate, reducing unnecessary repeated ignition and purging work, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0015] Attached Figure 1 It is a structural schematic diagram of the utility model;

[0016] Attached Figure 2 Yes Figure 1 Schematic diagram of the middle A direction;

[0017] Attached Figure 3 Yes Figure 1 Enlarged image at the center X;

[0018] Attached Figure 4 Yes Figure 3 Schematic diagram of the middle B direction; DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0022] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0023] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0024] Example

[0025] As attached Figure 1 , 2, 3 and 4, an ignition device for a horizontal burner, comprising a high-energy ignition rod 1, an ignition gun 2, a cylinder 3, a dust cover 4, a fixed support 5, a movable support 6, a fastening assembly 7 and a locking piece 8; the high-energy ignition rod 1 and the ignition gun 2 are installed in the burner 9, the discharge head of the high-energy ignition rod 1 extends into the corresponding area of ​​the nozzle of the ignition gun 2, the cylinder 3 is fixed on the fixed support 5, the telescopic rod position of the cylinder 3 head is equipped with a dust cover 4, the fixed support 5 is fixed on the burner 9 through the fastening assembly 7, and the high-energy ignition rod 1 is fixed on the movable support 6 through the locking piece 8. The ignition gun 2 comprises a support tube 201, a gas pipe 202 and a swirl blade 203, and the support tube 201 and the gas pipe 202 are both supported and positioned in the burner 9 by the swirl blade 203. A cooling air channel is provided on the fixed support 5. The fastening assembly 7 includes a bolt 701, a nut 702 and a gasket 703, and the fixing support 5 is connected to the central channel flange on the burner 9 through the bolt 701, the nut 702 and the gasket 703. The locking member 8 includes a locking bolt 801 and a handle nut 802, and the high-energy ignition rod 1 is positionally adjusted through the locking bolt 801 and the handle nut 802. The gas pipe 202 is placed at the lower end of the high-energy ignition rod 1.

[0026] The ignition device of a horizontal burner provided in this embodiment is mainly used for horizontal burners. Considering that the burner is suitable for low calorific value gas, the low calorific value fuel gas component fluctuates greatly, resulting in the calorific value fluctuating, which can easily cause unstable combustion. Usually, the burner is designed as a multi-nozzle diffusion type. During combustion, it is necessary to ignite the flammable gas first, and then use this "small fire" to ignite the gas of other nozzles to achieve "small fire to ignite a big fire" and let the burner burn normally. In order to facilitate flame diffusion, the ignition channel is generally set in the middle area of ​​the burner. At the same time, the ignition device needs to consider the cooling protection of the high temperature environment and improve the service life.

[0027] The ignition form of this embodiment adopts a high-energy discharge to form an ignition spark to ignite the fuel. The high-energy ignition rod 1 extends through the cylinder 3, and the discharge head extends into the nozzle area of ​​the ignition gun 2. This area is the gas and air mixing area, that is, the ignition and combustion area. The mixed gas burns rapidly under the ignition of the high-voltage pulse of the high-energy ignition rod 1. Taking into account the high temperature environment of the combustion zone, especially when natural gas is burning, the temperature in this area even exceeds 10000C. When the ignition is successful, the high-energy ignition rod 1 needs to be withdrawn from the ignition area to protect the equipment from being burned by high temperature. The cylinder 3 is fixed on the fixed support 5, and the head is equipped with a dust cover 4 to keep the cylinder rod clean and improve the service life and reliability.

[0028] The fixed support 5 is fixed to the burner by a fastening assembly 7. The high-energy ignition rod 1 is fixed to the movable support 6 by a locking member 8. A cooling air channel is provided on the fixed support 5 to introduce cooling air to protect the high-energy ignition rod 1 from being burned by high temperature.

[0029] When igniting, the cylinder 3 drives the high-energy ignition rod 1 to extend into the burner 9 to perform the ignition operation. After the ignition is successful, the cylinder 3 drives the high-energy ignition rod 1 to exit the ignition area, completing the ignition process.

[0030] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0031] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. An ignition device for a horizontal burner, characterized in that: The invention comprises a high-energy ignition rod (1), an ignition gun (2), a cylinder (3), a dust cover (4), a fixed support (5), a movable support (6), a fastening assembly (7) and a locking piece (8); the high-energy ignition rod (1) and the ignition gun (2) are installed in a burner (9); the discharge head of the high-energy ignition rod (1) extends into a corresponding area of ​​the nozzle of the ignition gun (2); the cylinder (3) is fixed on the fixed support (5); a dust cover (4) is installed at the telescopic rod position of the cylinder (3) head; the fixed support (5) is fixed on the burner (9) by the fastening assembly (7); and the high-energy ignition rod (1) is fixed on the movable support (6) by the locking piece (8).

2. The ignition device for a horizontal burner according to claim 1, characterized in that: The ignition gun (2) comprises a support tube (201), a gas tube (202) and a swirl blade (203); the support tube (201) and the gas tube (202) are both supported and positioned in the burner (9) by the swirl blade (203).

3. The ignition device for a horizontal burner according to claim 1, characterized in that: The fixed support (5) is provided with a cooling air channel.

4. The ignition device for a horizontal burner according to claim 1, characterized in that: The fastening assembly (7) comprises bolts (701), nuts (702) and gaskets (703), and the fixed support (5) is connected to the central channel flange on the burner (9) via the bolts (701), nuts (702) and gaskets (703).

5. The ignition device for a horizontal burner according to claim 1, characterized in that: The locking member (8) comprises a locking bolt (801) and a handle nut (802), and the position of the high-energy ignition rod (1) is adjusted by means of the locking bolt (801) and the handle nut (802).

6. The ignition device for a horizontal burner according to claim 2, characterized in that: The gas pipe (202) is placed at the lower end of the high-energy ignition rod (1).

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