Gas burner for industrial furnace

Abstract

The utility model belongs to the technical field of fuel gas burners, and relates to a fuel gas burner for an industrial furnace, which comprises a burner shell, a rotational flow disc and a sleeve, ignition electrodes are symmetrically mounted on two sides of the front end of the burner shell, a fuel gas injection pipe and a combustion-supporting gas injection pipe are symmetrically arranged at the top and the bottom of the rear side of the burner shell respectively, and a stop block is fixedly mounted in the burner shell. An air pipe is fixedly inserted in the circle center of the check block, an air compressor is fixedly installed at the rear end of the check block, the output end of the air compressor is fixedly communicated with the air pipe, the rotational flow disc is fixedly installed in the burner shell, an air hole is formed in the circle center of the rotational flow disc, and a plurality of rotational flow grooves are formed in the edge of the rotational flow disc. The sleeve rotationally sleeves the outer side of the air pipe, and a plurality of fan blades are fixedly welded on the circumference of the sleeve at equal intervals; according to the gas burner, the fuel gas and the combustion-supporting gas are pre-mixed, preheating is carried out in the pre-mixing process, the combustion efficiency is improved, and the fuel cost is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of furnace combustion equipment, in particular to a gas burner for industrial furnaces. Background Art

[0002] Gas burners are specially configured for burning coal gas, also known as burners or flames, and are mainly used for coal gasification produced by gasifiers. Gas burners are composed of two parts: the air distribution channel and the gas channel. They generally adopt a ring tube structure, with the inner hole being the gas cylinder and the outer periphery being the air duct. Gas burners are made of a variety of materials. In order to cope with the harm of high-temperature combustion to the burner, they generally have high-temperature resistant measures and are processed with heat-resistant materials. Gas burners are widely used in the production of industrial furnaces.

[0003] After searching, the Chinese utility model patent authorization announcement number CN 211400811 U discloses a gas burner for industrial furnaces with flexible combustion power adjustment, including an outer air tube and an inner gas tube, the inner hole of the outer air tube is concentrically nested with the inner gas tube, the head end of the inner gas tube is connected in series with an air swirl disk, the air swirl disk is evenly distributed with swirl slots, the outer wall of the air swirl disk is embedded with the inner hole wall of the head end of the outer air tube, the tail end of the inner gas tube is connected in series with a sealing gasket, the outer wall of the sealing gasket is embedded with the inner hole wall of the tail end of the outer air tube, and the radial surface of the tail end of the outer air tube is fixedly connected with a high-pressure air interface. The utility model introduces combustion-supporting air through the outer air tube, and the air is conducted to the head end of the outer air tube through the swirl slots. At the same time, the gas seat is connected to the gas through the high-pressure gas interface. The gas is evenly dispersed and sprayed out through the gas distributor, and is evenly and fully mixed with the high-pressure air sprayed out of the swirl slots, and ignited by two ignition electrodes to achieve ignition operation.

[0004] Gas burners generally ignite a mixture of fuel gas and combustion-supporting gas through electrodes, and then use high-pressure air to spray out to increase the temperature. However, the above-mentioned utility model adopts a design of mixing while burning, which easily leads to insufficient fuel mixing and increases the firing cost. Utility Model Content

[0005] The purpose of this utility model is to provide a gas burner for industrial furnaces.

[0006] The utility model adopts the following technical scheme: a gas burner for an industrial furnace, comprising a burner shell, a swirl disk and a sleeve, wherein ignition electrodes are symmetrically installed on both sides of the front end of the burner shell, and a gas injection pipe and a combustion-supporting gas injection pipe are symmetrically provided on the top and bottom of the rear side of the burner shell, respectively, a block is fixedly installed in the burner shell, an air pipe is fixedly inserted at the center of the block, an air compressor is fixedly installed at the rear end of the block, and the output end of the air compressor is fixedly connected to the air pipe, the swirl disk is fixedly installed inside the burner shell, an air hole is opened at the center of the swirl disk, and the end of the air pipe away from the block is fixedly inserted in the air hole, a plurality of swirl grooves are opened at the edge of the swirl disk, and a plurality of preheating plates are integrally formed at the rear end of the swirl disk, the sleeve is rotatably sleeved on the outside of the air pipe, and a plurality of fan blades are fixedly welded to the sleeve at equal intervals.

[0007] As a preferred technical solution of the utility model, a high temperature resistant nozzle is fixedly installed at the front end of the burner shell and the high temperature resistant nozzle is in a cone shape.

[0008] As a preferred technical solution of the utility model, both the fuel gas injection pipe and the combustion-supporting gas injection pipe are provided with flow control solenoid valves.

[0009] As a preferred technical solution of the utility model, the front end of the stopper is in a frustum shape and is located at the rear side of the fuel gas injection pipe and the combustion-supporting gas injection pipe.

[0010] As a preferred technical solution of the utility model, a filter screen is fixedly installed at the rear end of the burner shell.

[0011] As a preferred technical solution of the utility model, a plurality of swirl grooves are arranged in an equidistant circular array and staggered with a plurality of preheating plates.

[0012] As a preferred technical solution of the present utility model, the preheating plate is made of a high thermal conductivity metal material and a plurality of thermal conductive fins are integrally formed on the inner wall of the preheating plate.

[0013] As a preferred technical solution of the utility model, the fan blades are obliquely arranged on the sleeve and a plurality of through holes are opened on the fan blades.

[0014] The beneficial effects of the utility model are:

[0015] Fuel gas and combustion-supporting gas are injected into the fuel gas injection pipe and the combustion-supporting gas injection pipe through an external air compressor, and the fan blades are driven by air power to rotate to premix the fuel gas and the combustion-supporting gas. During the combustion of the mixed gas, the temperature of the swirl disk increases, and the temperature is transferred to the premixed gas through the preheating plate for preheating. By adopting a premixing design for the fuel gas and the combustion-supporting gas, and preheating them during the premixing process, the combustion efficiency is improved and fuel costs are saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the swirl disk in the utility model;

[0020] Figure 4 It is a structural schematic diagram of the sleeve in the utility model.

[0021] In the figure:

[0022] 1. Burner shell; 101. High temperature resistant nozzle; 102. Ignition electrode; 103. Gas injection pipe; 104. Combustion-supporting gas injection pipe; 105. Stopper; 106. Air pipe; 107. Air compressor; 108. Filter;

[0023] 2. swirl disk; 201. air hole; 202. swirl groove; 203. preheating plate; 204. heat conducting fin;

[0024] 3. Casing; 301. Fan blade; 302. Through hole. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Example: Figure 1-4As shown, a gas burner for an industrial furnace comprises a burner housing 1, a swirl disk 2 and a sleeve 3. Ignition electrodes 102 are symmetrically installed on both sides of the front end of the burner housing 1. A gas injection pipe 103 and a combustion-supporting gas injection pipe 104 are symmetrically arranged on the top and bottom of the rear side of the burner housing 1. A stopper 105 is fixedly installed in the burner housing 1. An air pipe 106 is fixedly inserted at the center of the stopper 105. An air compressor 107 is fixedly installed at the rear end of the stopper 105. The output end of the machine 107 is fixedly connected to the air pipe 106, the swirl disk 2 is fixedly installed inside the burner shell 1, an air hole 201 is opened at the center of the swirl disk 2 and the end of the air pipe 106 away from the block 105 is fixedly inserted in the air hole 201, a plurality of swirl grooves 202 are opened at the edge of the swirl disk 2, a plurality of preheating plates 203 are integrally formed at the rear end of the swirl disk 2, the sleeve 3 is rotatably sleeved on the outside of the air pipe 106 and a plurality of fan blades 301 are fixedly welded to the sleeve 3 at equal intervals around the circumference.

[0027] A high temperature resistant nozzle 101 is fixedly mounted at the front end of the burner housing 1 and is cone-shaped. When in use, the cone-shaped high temperature resistant nozzle 101 guides the ejected flame to make the flame more concentrated and increase the combustion temperature.

[0028] Both the fuel gas injection pipe 103 and the combustion-supporting gas injection pipe 104 are provided with flow control solenoid valves. When in use, the flow rates of the fuel gas and the combustion-supporting gas are controlled by the flow control solenoid valves to control the ratio of the mixed gas.

[0029] The front end of the stopper 105 is in a cone shape and is located behind the fuel gas injection pipe 103 and the combustion-supporting gas injection pipe 104. When in use, the cone-shaped stopper 105 guides the injected fuel gas and combustion-supporting gas for convection, thereby improving the mixing effect.

[0030] A filter screen 108 is fixedly installed at the rear end of the burner housing 1. When in use, impurities in the air are filtered through the filter screen 108 to prevent the air compressor 107 from injecting air with impurities that affects the combustion efficiency.

[0031] The plurality of swirl grooves 202 are arranged in an equidistant circular array and are staggered with the plurality of preheating plates 203. When in use, the staggered arrangement is adopted to improve the uniformity of the spraying of the mixed gas.

[0032] The preheating plate 203 is made of a high thermal conductivity metal material and a plurality of thermal conductive fins 204 are integrally formed on the inner wall of the preheating plate 203 . When in use, the thermal conductive fins 204 increase the heat conduction area and improve the preheating efficiency.

[0033] The fan blades 301 are tilted on the sleeve 3 and a plurality of through holes 302 are provided on the fan blades 301. When in use, the tilted fan blades 301 rotate to form a swirl of the mixed gas, thereby improving the premixing effect. The gas is dispersed and mixed through the through holes 302, thereby further improving the premixing effect.

[0034] Specifically, when the utility model is used, fuel gas and combustion-supporting gas are injected into the fuel gas injection pipe 103 and the combustion-supporting gas injection pipe 104 respectively through an external air compressor, and the air power is used to drive the sleeve 3 to rotate. The rotation of the sleeve 3 drives the fan blades 301 to rotate. The rotation of the fan blades 301 causes the fuel gas and the combustion-supporting gas to be premixed, and then ejected through the swirl groove 202 on the swirl disk 2, and ignited by the ignition electrode 102. At the same time, the air compressor 107 compresses the air and ejects it through the air pipe 106 to drive the ignited gas flame to eject. In the process of combustion of the mixed gas, the temperature of the swirl disk 2 increases, and the temperature is transferred through the preheating plate 203 to preheat the premixed gas, thereby improving the combustion efficiency.

[0035] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations 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 orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0037] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas burner for an industrial furnace, comprising a burner housing (1), a swirl disk (2) and a sleeve (3), characterized in that: Ignition electrodes (102) are symmetrically mounted on both sides of the front end of the burner shell (1); a gas injection pipe (103) and a combustion-supporting gas injection pipe (104) are symmetrically mounted on the top and bottom of the rear side of the burner shell (1); a stopper (105) is fixedly mounted inside the burner shell (1); an air pipe (106) is fixedly inserted at the center of the stopper (105); an air compressor (107) is fixedly mounted at the rear end of the stopper (105); and the output end of the air compressor (107) is fixedly connected to the air pipe (106). The swirl disk (2) is fixedly installed inside the burner shell (1), an air hole (201) is opened at the center of the swirl disk (2), and one end of the air pipe (106) away from the block (105) is fixedly inserted in the air hole (201), a plurality of swirl grooves (202) are opened at the edge of the swirl disk (2), a plurality of preheating plates (203) are integrally formed at the rear end of the swirl disk (2), the sleeve (3) is rotatably sleeved on the outside of the air pipe (106), and a plurality of fan blades (301) are fixedly welded to the sleeve (3) at equal intervals around the circumference.

2. The gas burner for an industrial furnace according to claim 1, characterized in that: A high temperature resistant nozzle (101) is fixedly mounted on the front end of the burner shell (1), and the high temperature resistant nozzle (101) is in a cone-shaped cylinder.

3. The gas burner for industrial furnace according to claim 1, characterized in that: The fuel gas injection pipe (103) and the combustion-supporting gas injection pipe (104) are both provided with flow control solenoid valves.

4. The gas burner for an industrial furnace according to claim 1, characterized in that: The front end of the stopper (105) is in a frustum shape and is located at the rear side of the fuel gas injection pipe (103) and the combustion-supporting gas injection pipe (104).

5. The gas burner for industrial furnace according to claim 1, characterized in that: A filter screen (108) is fixedly mounted on the rear end of the burner housing (1).

6. The gas burner for industrial furnace according to claim 1, characterized in that: The plurality of swirl grooves (202) are arranged in an equidistant circular array and are staggered with the plurality of preheating plates (203).

7. The gas burner for industrial furnace according to claim 1, characterized in that: The preheating plate (203) is made of a high thermal conductivity metal material and a plurality of thermal conductive fins (204) are integrally formed on the inner wall of the preheating plate (203).

8. The gas burner for industrial furnace according to claim 1, characterized in that: The fan blade (301) is arranged obliquely on the sleeve (3) and a plurality of through holes (302) are provided on the fan blade (301).

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