Pure oxygen burner

Abstract

The utility model relates to the technical field of metal smelting efficient combustion equipment, in particular to a pure oxygen combustor which comprises a three-way distribution valve and further comprises an upper fixing plate, a mounting block and a lower fixing plate, the mounting block is arranged at the bottom of the upper fixing plate, and the lower fixing plate is embedded in the mounting block and is parallel to the upper fixing plate; the top of the upper fixing plate is fixedly provided with a natural gas cover, the top of the natural gas cover is communicated with a natural gas pipeline, the bottom of the upper fixing plate is provided with a plurality of natural gas branch pipes communicated with the natural gas cover, and the lower parts of the natural gas branch pipes are fixedly connected with the lower fixing plate; a pure oxygen pipeline is fixedly arranged on the upper fixed plate, and the lower part of the pure oxygen pipeline is fixedly connected with the fixed plate; an ignition gun pipeline, a flame detection pipeline and a flame detection standby pipeline are further fixedly arranged on the upper fixing plate. According to the utility model, the fuel entering the smelting furnace can be effectively combusted uniformly and fully, and meanwhile, the heating is more uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of high-efficiency combustion equipment for metal melting, and particularly relates to a pure oxygen burner. Background Art

[0002] The pure oxygen burner, also known as the multi-oxygen burner, has evolved over the years. Starting from air-assisted combustion, it has developed to oxygen-enriched combustion and then to pure oxygen-assisted combustion with a concentration greater than 80%. A pure oxygen burner refers to a burner that uses pure oxygen as an oxidizer in the industrial field. The combustion principle of a pure oxygen burner is fundamentally different from that of a general burner. It is a process where fuel and pure oxygen are gradually mixed in the furnace, and after mixing, they are evenly distributed in the furnace for low-temperature diffusive combustion, which can make the fuel burn more ideally, saving about 50% of the fuel and reducing the flue gas volume by more than 70%. Currently, most pure oxygen burners are installed on the top of the melting furnace to melt the metal materials inside the melting furnace. However, during the use of existing pure oxygen burners, there are problems such as incomplete fuel combustion and uneven heating. Summary of the Invention

[0003] In order to solve the problems of incomplete fuel combustion and uneven heating existing in the use of existing pure oxygen burners, the utility model provides a pure oxygen generator. This pure oxygen burner can effectively make the fuel entering the melting furnace burn evenly and fully, and at the same time make the heating more uniform.

[0004] To achieve the above object, the technical solution of the utility model is: a pure oxygen burner, including a three-way distribution valve, and further including an upper fixing plate, a mounting block, and a lower fixing plate. The mounting block is arranged at the bottom of the upper fixing plate, the lower fixing plate is embedded in the mounting block and is arranged parallel to the upper fixing plate, and the lower fixing plate is located below the upper fixing plate. The mounting block facilitates the installation of the pure oxygen burner on the top of the melting furnace body, and the pure oxygen burner can be fixed to the melting furnace body through the upper fixing plate and bolts.

[0005] A gas hood is fixedly arranged on the top of the upper fixing plate. The top of the gas hood is connected to a natural gas pipeline. A plurality of natural gas branch pipes communicating with the gas hood are arranged at the bottom of the upper fixing plate, and the lower part of the natural gas branch pipe is fixedly connected to the lower fixing plate. The natural gas pipeline is used to introduce natural gas into the gas hood, and the natural gas branch pipes transport the natural gas in the gas hood into the melting furnace body to make the natural gas distribution more uniform.

[0006] A pure oxygen pipeline is fixedly arranged on the upper fixing plate, and the lower part of the pure oxygen pipeline is fixedly connected to the fixing plate; an ignition gun pipeline, a flame detector pipeline, and a flame detector backup pipeline are also fixedly arranged on the upper fixing plate. The ignition gun pipeline is used to connect the ignition gun, the flame detector pipeline is used to connect the flame detector device, and the flame detector backup pipeline is used for visual observation or as a backup pipeline for flame detector detection.

[0007] Furthermore, a plurality of lifting lugs are arranged around the gas hood, and the lifting lugs are fixedly arranged on the top of the upper fixing plate. The lifting lugs facilitate the hoisting or lifting of the pure oxygen burner.

[0008] Furthermore, a plurality of inspection holes are formed in the top of the gas hood, and a plug detachably connected to the gas hood is provided at each inspection hole. The plug is used to close the inspection hole to prevent natural gas from leaking through the inspection hole.

[0009] Furthermore, the number of the natural gas branch pipes is four, and a plurality of through holes are formed in the upper fixing plate. The upper ends of the natural gas branch pipes are fixedly arranged at the through holes, and the natural gas branch pipes are communicated with the gas hood through the through holes.

[0010] Furthermore, the pure oxygen pipeline includes a first pure oxygen pipeline, a second pure oxygen pipeline and a third pure oxygen pipeline. The first pure oxygen pipeline and the third pure oxygen pipeline are symmetrically arranged on the upper fixing plate. The lower ends of the first pure oxygen pipeline and the third pure oxygen pipeline are both inclined downward along the direction close to the natural gas branch pipes, and the purpose is to ensure that sufficient oxygen is provided for the natural gas to burn the natural gas.

[0011] Furthermore, the second pure oxygen pipeline is located between the first pure oxygen pipeline and the third pure oxygen pipeline. The lower end of the second pure oxygen pipeline is located between the four natural gas branch pipes. The upper end of the second pure oxygen pipeline passes through the upper fixing plate and extends to the outside of the gas hood.

[0012] Furthermore, quick connectors are arranged at the upper ends of the first pure oxygen pipeline, the second pure oxygen pipeline and the third pure oxygen pipeline. The first pure oxygen pipeline, the second pure oxygen pipeline and the third pure oxygen pipeline are all communicated with the three-way distribution valve through the quick connectors and pipelines. The distribution valve can switch the pipelines for introducing oxygen into the melting furnace body to change the burning direction of the natural gas.

[0013] Furthermore, the lower ends of the ignition gun pipeline, the flame detector pipeline and the flame detector standby pipeline are all inclined downward along the direction close to the natural gas branch pipes to facilitate ignition and flame detector detection.

[0014] By the above technical solutions, the beneficial effects of the present utility model are as follows:

[0015] The structure of the present utility model is reasonable and has good use effects, and can effectively make the fuel entering the melting furnace burn evenly and sufficiently, and at the same time make the heating more uniform.

[0016] The utility model transports fuel into the gas hood through a natural gas pipeline, and transports the fuel into the interior of the smelting furnace through four natural gas branch pipes, so that the natural gas is more evenly distributed and the combustion is more sufficient; through a three-way distribution valve, the pipeline for introducing oxygen into the smelting furnace body can be switched, so that the pure oxygen pipeline one, the pure oxygen pipeline two and the pure oxygen pipeline three can alternately introduce oxygen into the smelting furnace body to change the orientation of fuel combustion, achieving the effects of making the fuel burn evenly and sufficiently and heating more evenly.

[0017] The mounting block of the utility model is used to mount the pure oxygen burner to the top of the smelting furnace body, and the upper fixing plate is used to fix the pure oxygen burner on the smelting furnace body; the ignition gun pipeline is used to connect the ignition gun to ignite the fuel entering the smelting furnace body, and the flame detector pipeline is used to connect the flame detector device to detect the state of fuel combustion, avoid the occurrence of potential hazards and ensure safe production. Brief Description of the Drawings

[0018] Figure 1 is a schematic structural view of a pure oxygen burner of the utility model Figure 1 ;

[0019] Figure 2 is a schematic structural view of a pure oxygen burner of the utility model Figure 2 ;

[0020] Figure 3 is a schematic structural view of a pure oxygen burner of the utility model Figure 3 ;

[0021] Figure 4 is a schematic structural view of a pure oxygen burner of the utility model Figure 4 (excluding the mounting block);

[0022] Figure 5 is a schematic structural view of a pure oxygen burner of the utility model Figure 5 (excluding the mounting block).

[0023] The reference numerals in the drawings are: 1 is the mounting block, 2 is the upper fixing plate, 3 is the lower fixing plate, 4 is the lifting lug, 5 is the gas hood, 6 is the natural gas pipeline, 7 is the plug, 8 is the natural gas branch pipe, 9 is the pure oxygen pipeline one, 10 is the pure oxygen pipeline two, 11 is the pure oxygen pipeline three, 12 is the ignition gun pipeline, 13 is the flame detector pipeline, and 14 is the flame detector standby pipeline. Detailed Description of the Preferred Embodiments

[0024] The following further describes the utility model in conjunction with the drawings and specific embodiments:

[0025] As Figures 1 to 5As shown in the figure, a pure oxygen burner includes a three-way distribution valve, and also includes an upper fixing plate 2, a mounting block 1, and a lower fixing plate 3. The mounting block 1 is arranged at the bottom of the upper fixing plate 2. The lower fixing plate 3 is embedded in the mounting block 1 and is arranged parallel to the upper fixing plate 2. The lower fixing plate 3 is located below the upper fixing plate 2. In this embodiment, the size of the upper fixing plate 2 is larger than that of the lower fixing plate 3. The upper fixing plate 2 and the lower fixing plate 3 play a role in fixing the natural gas branch pipe 8, the pure oxygen pipeline, the ignition gun pipeline 12, the flame detector pipeline 13, and the flame detector standby pipeline 14. The mounting block 1 is used to install the pure oxygen burner at the installation hole reserved at the top of the melting furnace body. The material of the mounting block 1 is refractory and high-temperature resistant material. In this embodiment, the material of the mounting block 1 is castable. Among them, mounting holes are arranged at the edge of the upper fixing plate 2, and the upper fixing plate 2 can be fixed to the top of the melting furnace body through bolts, so as to achieve the purpose of fixing the pure oxygen burner.

[0026] A gas hood 5 is fixedly arranged at the top of the upper fixing plate 2. The top of the gas hood 5 is communicated with a natural gas pipeline 6. A plurality of natural gas branch pipes 8 communicated with the gas hood 5 are arranged at the bottom of the upper fixing plate 2. The lower part of the natural gas branch pipe 8 is fixedly connected to the lower fixing plate 3. In this embodiment, natural gas can be transported to the gas hood 5 through the natural gas pipeline 6, and then the natural gas can be transported to the inside of the melting furnace body through the natural gas branch pipe 8, so as to make the natural gas distribution more uniform and ensure the full combustion of the natural gas.

[0027] A pure oxygen pipeline is fixedly arranged on the upper fixing plate 2. The lower part of the pure oxygen pipeline is fixedly connected to the fixing plate 3. An ignition gun pipeline 12, a flame detector pipeline 13, and a flame detector standby pipeline 14 are also fixedly arranged on the upper fixing plate 2. In this embodiment, the lower parts of the ignition gun pipeline 12, the flame detector pipeline 13, and the flame detector standby pipeline 14 are all fixedly installed on the lower fixing plate 3, and the lower fixing plate 3 further fixes the ignition gun pipeline 12, the flame detector pipeline 13, and the flame detector standby pipeline 14.

[0028] A plurality of lifting lugs 4 are arranged around the gas hood 5. The lifting lugs 4 are fixedly arranged at the top of the upper fixing plate 2. In this embodiment, the number of the lifting lugs 4 is four. The lifting lugs 4 are welded and fixed at the top of the upper fixing plate 2, and the pure oxygen burner can be lifted or hoisted through the lifting lugs 4.

[0029] A plurality of inspection holes are opened at the top of the gas hood 5. A plug 7 detachably connected to the gas hood 5 is arranged at each inspection hole. In this embodiment, the number of the inspection holes and the plugs 7 is four. The plug 7 is used to close the inspection hole to avoid the leakage of natural gas at the inspection hole and prevent potential safety hazards.

[0030] The number of the natural gas branch pipes 8 is four, and a plurality of through holes are opened on the upper fixed plate 2, and the upper ends of the natural gas branch pipes 8 are fixedly arranged at the through holes.

[0031] The pure oxygen pipeline includes a pure oxygen pipeline 1 9, a pure oxygen pipeline 2 10 and a pure oxygen pipeline 3 11, and the pure oxygen pipeline 1 9 and the pure oxygen pipeline 3 11 are symmetrically arranged on the upper fixed plate 2, and the lower ends of the pure oxygen pipeline 1 9 and the pure oxygen pipeline 3 11 are arranged to be tilted downward in the direction close to the natural gas branch pipe 8. In this embodiment, the lower parts of the pure oxygen pipeline 1 9 and the pure oxygen pipeline 3 11 are fixedly installed on the lower fixed plate 3, and the pure oxygen pipeline 1 9 and the pure oxygen pipeline 3 11 are further fixed by the lower fixed plate 3.

[0032] The pure oxygen pipeline 2 10 is located between the pure oxygen pipeline 1 9 and the pure oxygen pipeline 3 11, the lower end of the pure oxygen pipeline 2 10 is located between the four natural gas branch pipes 8, and the upper end of the pure oxygen pipeline 2 10 passes through the upper fixed plate 2 and extends to the outside of the gas hood 5. In this embodiment, the lower part of the pure oxygen pipeline 2 10 is also fixedly installed on the lower fixed plate 3, and the pure oxygen pipeline 2 10 is further fixed by the lower fixed plate 3; the pure oxygen pipeline 1 9, the pure oxygen pipeline 2 10 and the pure oxygen pipeline 3 11 are used to transport oxygen to the furnace body of the smelting furnace to provide sufficient oxygen for the combustion of natural gas.

[0033] The upper ends of the pure oxygen pipeline 1 9, the pure oxygen pipeline 2 10 and the pure oxygen pipeline 3 11 are all provided with quick connectors, and the pure oxygen pipeline 1 9, the pure oxygen pipeline 2 10 and the pure oxygen pipeline 3 11 are all connected to the three-way distribution valve through quick connectors and pipelines. In this embodiment, the pipelines for oxygen introduced into the furnace body of the smelting furnace can be switched through the three-way distribution valve, so that the pure oxygen pipeline 1 9, the pure oxygen pipeline 2 10 and the pure oxygen pipeline 3 11 can alternately introduce oxygen into the furnace body of the smelting furnace to change the direction of natural gas combustion.

[0034] The lower ends of the ignition gun pipeline 12, the fire detection pipeline 13 and the fire detection standby pipeline 14 are all arranged to be tilted downward in the direction close to the natural gas branch pipe 8. In this embodiment, a 1.5-inch thread head is installed at the upper end of the ignition gun pipeline 12 for fixing the ignition gun, and the natural gas introduced into the furnace body of the smelting furnace is ignited by the ignition gun; a 1.5-inch inner and outer thread is installed at the upper end of the fire detection pipeline 13 for connecting a fire detection device, which is a prior art. In this embodiment, the fire detection device adopts a fire detection device in a pure oxygen burner of a Chinese utility model patent with an authorization announcement number of CN206176368U, and the fire detection device is used to detect the state of natural gas combustion, so as to cut off the supply of natural gas in time to avoid danger.

[0035] It should be noted that when the utility model is in use, the natural gas branch pipe 8, the pure oxygen pipeline I 9, the pure oxygen pipeline II 10, the pure oxygen pipeline III 11, the ignition gun pipeline 12, the flame detector pipeline 13 and the flame detector standby pipeline 14 all extend to the inside of the melting furnace body.

[0036] When the utility model is in use, natural gas is conveyed into the natural gas hood 5 through the natural gas pipeline 6, and then the natural gas enters the inside of the melting furnace body through the four natural gas branch pipes 8. Then, under the action of the three-way distribution valve, oxygen enters the melting furnace body through the pure oxygen pipeline II 10 to assist the combustion of natural gas. Then, ignition and combustion are carried out through the ignition gun and the ignition gun pipeline 12. During the combustion process of natural gas, the pipeline for conveying oxygen to the melting furnace body can be switched through the three-way distribution valve, so that oxygen is conveyed into the inside of the melting furnace through the pure oxygen pipeline I 9 or the pure oxygen pipeline III 11, changing the combustion direction of natural gas, so as to make the combustion of natural gas uniform and sufficient and the heating more uniform.

[0037] The above-mentioned embodiments are only the preferred embodiments of the utility model, and do not limit the implementation scope of the utility model. Therefore, any equivalent changes or modifications made to the technical solutions described in the scope of the utility model patent shall be included in the scope of the patent application of the utility model.

Claims

1. A pure oxygen burner, comprising a three-way distribution valve, characterized in that: It also comprises an upper fixing plate (2), a mounting block (1) and a lower fixing plate (3), wherein the mounting block (1) is arranged at the bottom of the upper fixing plate (2), the lower fixing plate (3) is embedded in the mounting block (1) and arranged parallel to the upper fixing plate (2), and the lower fixing plate (3) is located below the upper fixing plate (2); A gas hood (5) is fixedly arranged on the top of the upper fixed plate (2), the top of the gas hood (5) is connected to a natural gas pipeline (6), a plurality of natural gas branch pipes (8) connected to the gas hood (5) are arranged on the bottom of the upper fixed plate (2), and the lower part of the natural gas branch pipes (8) is fixedly connected to the lower fixed plate (3); A pure oxygen pipeline is fixedly arranged on the upper fixed plate (2), and the lower part of the pure oxygen pipeline is fixedly connected to the fixed plate (3); an ignition gun pipeline (12), a fire detection pipeline (13) and a fire detection standby pipeline (14) are also fixedly arranged on the upper fixed plate (2).

2. A pure oxygen burner according to claim 1, characterized in that: A plurality of lifting ears (4) are arranged around the gas hood (5), and the lifting ears (4) are fixedly arranged on the top of the upper fixing plate (2).

3. A pure oxygen burner according to claim 1, characterized in that: A plurality of inspection holes are provided on the top of the gas hood (5), and each of the inspection holes is provided with a plug (7) detachably connected to the gas hood (5).

4. A pure oxygen burner according to claim 1, characterized in that: The number of the natural gas branch pipes (8) is four, a plurality of through holes are provided on the upper fixed plate (2), and the upper ends of the natural gas branch pipes (8) are fixedly arranged at the through holes.

5. A pure oxygen burner according to claim 4, characterized in that: The pure oxygen pipeline comprises a pure oxygen pipeline 1 (9), a pure oxygen pipeline 2 (10) and a pure oxygen pipeline 3 (11). The pure oxygen pipeline 1 (9) and the pure oxygen pipeline 3 (11) are symmetrically arranged on the upper fixed plate (2). The lower ends of the pure oxygen pipeline 1 (9) and the pure oxygen pipeline 3 (11) are arranged to be inclined downward in a direction close to the natural gas branch pipe (8).

6. A pure oxygen burner according to claim 5, characterized in that: The pure oxygen pipeline 2 (10) is located between the pure oxygen pipeline 1 (9) and the pure oxygen pipeline 3 (11), the lower end of the pure oxygen pipeline 2 (10) is located between the four natural gas branch pipes (8), and the upper end of the pure oxygen pipeline 2 (10) passes through the upper fixing plate (2) and extends to the outside of the natural gas hood (5).

7. A pure oxygen burner according to claim 6, characterized in that: The upper ends of the pure oxygen pipeline 1 (9), the pure oxygen pipeline 2 (10) and the pure oxygen pipeline 3 (11) are all provided with quick connectors, and the pure oxygen pipeline 1 (9), the pure oxygen pipeline 2 (10) and the pure oxygen pipeline 3 (11) are all connected to the three-way distribution valve through the quick connector and the pipeline.

8. A pure oxygen burner according to claim 1, characterized in that: The lower ends of the ignition gun pipeline (12), the fire detection pipeline (13) and the fire detection standby pipeline (14) are all arranged to be inclined downward in a direction close to the natural gas branch pipe (8).

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