Fuel gas injection device for furnace group

Abstract

The utility model discloses a fuel gas injection device for a furnace group, and relates to the technical field of fuel gas injection. Comprising a cylinder, an air inlet pipe is arranged at the bottom of the cylinder, the outer wall of the cylinder is sleeved with an air inlet assembly, the air inlet assembly comprises a first connecting pipe, and the top face of the first connecting pipe is fixedly connected and communicated with an air inlet pipe; the first connecting pipe is fixedly connected and communicated with a plurality of second connecting pipes, the ends, away from the first connecting pipe, of the second connecting pipes are communicated with the cylinder, and adjusting assemblies are arranged in the ends, close to the first connecting pipe, of the second connecting pipes and used for making gas entering the second connecting pipes generate turbulent flow. Fuel gas can be stably supplied into the cylinder for a long time through the second connecting pipe; and meanwhile, the fuel gas can generate turbulent flow through the adjusting assembly, so that the fuel gas entering the cylinder can be effectively mixed with oxygen conveyed by the air inlet pipe, the metallurgy work can be continuously carried out, and the metallurgy efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of in-furnace gas injection, in particular to a gas injection device for a furnace group. Background Art

[0002] A metallurgical furnace can use gas (such as natural gas, coal gas, etc.) as the heat source in the smelting process, and oxygen as the combustion-supporting agent to melt the materials or increase the temperature of the molten slag to meet the smelting requirements; at present, in order to supply gas to a furnace group, it is usually necessary to extend a spray gun into the furnace group for gas injection. After long-term use of the spray gun for gas injection in the furnace group, the spray gun is easily burned out. At this time, it is necessary to stop the furnace to replace the spray gun, which is not only time-consuming and laborious, but also affects the metallurgical efficiency; therefore, there is an urgent need for a gas injection device for a furnace group that can stably supply gas for a long time, enable the metallurgical work to proceed continuously, and improve the metallurgical efficiency. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a gas injection device for a furnace group to solve the problems existing in the above-mentioned prior art.

[0004] To achieve the above purpose, the utility model provides the following scheme: The utility model provides a gas injection device for a furnace group, including a cylinder. An air inlet pipe is arranged at the bottom of the cylinder. An air inlet assembly is sleeved on the outer wall of the cylinder. The air inlet assembly includes a first connecting pipe, and an air inlet pipe is fixedly connected and communicated with the top surface of the first connecting pipe; the first connecting pipe is fixedly connected and communicated with a plurality of second connecting pipes. One end of the second connecting pipe far away from the first connecting pipe is communicated with the cylinder. An adjusting assembly is arranged inside the second connecting pipe near the first connecting pipe. The adjusting assembly is used to make the gas entering the second connecting pipe generate turbulence.

[0005] Preferably, the inner diameter of the end of the second connecting pipe extending into the cylinder is smaller than the inner diameter of the end of the second connecting pipe communicated with the first connecting pipe.

[0006] Preferably, one end of the cylinder is sealed, and an air outlet is arranged at the other end of the cylinder. An air inlet is arranged at the bottom of the cylinder. The air inlet is fixedly connected and communicated with the air inlet pipe.

[0007] Preferably, a plurality of second connecting pipes are arranged at equal intervals and obliquely.

[0008] Preferably, one ends of a plurality of second connecting pipes extending into the cylinder are arranged close to the air outlet.

[0009] Preferably, the cylinder includes a housing, an insulating layer is fixedly connected to the inner wall of the housing, and a fire port layer is fixedly connected to the inner wall of the insulating layer.

[0010] Preferably, the adjusting assembly includes a plurality of support rods. One end of each support rod is fixedly connected to the inner wall of the second connecting pipe. The other ends of all the support rods are fixedly connected to the outer wall of a bearing. The inner wall of the bearing is fixedly connected to a transmission rod, and one end of the transmission rod extending outside the bearing is fixedly connected to a fan blade.

[0011] Preferably, the plurality of support rods are arranged at equal intervals.

[0012] Preferably, a semi-sphere is fixedly connected to one end of the bearing facing the first connecting pipe.

[0013] Preferably, the transmission rod is arranged at one end of the bearing facing away from the semi-sphere.

[0014] The present utility model discloses the following technical effects:

[0015] The present utility model replaces the spray gun with the second connecting pipe, eliminating the work of replacing the spray gun, and can stably supply gas to the cylinder for a long time through the second connecting pipe; at the same time, the adjusting assembly can make the gas generate turbulence, enabling the gas entering the cylinder to effectively mix with the oxygen transported by the air inlet pipe, enabling the metallurgical work to proceed continuously, and effectively improving the metallurgical efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

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

[0018] Figure 2 It is a side view structural schematic diagram of the present utility model;

[0019] Figure 3 It is a cylinder structural schematic diagram of the present utility model;

[0020] Figure 4 It is a sectional view structural schematic diagram of the second connecting pipe of the present utility model;

[0021] Figure 5 It is a sectional view structural schematic diagram at the transmission rod of the present utility model;

[0022] Figure 6 It is a structural schematic diagram at the fan blade of the present utility model;

[0023] Among them, 1. Cylinder; 2. First connecting pipe; 3. Air inlet pipe; 4. Air inlet duct; 11. Heat insulation layer; 12. Fire port layer; 13. Air outlet; 14. Air inlet; 21. Second connecting pipe; 22. Support rod; 23. Bearing; 24. Transmission rod; 25. Fan blade; 26. Semi-sphere. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0025] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] Referring to Figures 1-6 , the present invention discloses a gas injection device for a furnace group, including a cylinder 1. An air inlet duct 4 is provided at the bottom of the cylinder 1. An air intake assembly is sleeved on the outer wall of the cylinder 1. The air intake assembly includes a first connecting pipe 2. The top surface of the first connecting pipe 2 is fixedly connected and communicated with an air inlet pipe 3. The first connecting pipe 2 is fixedly connected and communicated with a plurality of second connecting pipes 21. One end of the second connecting pipe 21 away from the first connecting pipe 2 is communicated with the cylinder 1. An adjusting assembly is provided inside the second connecting pipe 21 near the first connecting pipe 2. The adjusting assembly is used to make the gas entering the second connecting pipe 21 generate turbulence.

[0027] The present invention replaces the spray gun with the second connecting pipe 21, eliminating the work of replacing the spray gun, and can stably supply gas to the inside of the cylinder 1 for a long time through the second connecting pipe 21. At the same time, through the adjusting assembly, the gas can generate turbulence, enabling the gas entering the cylinder 1 to effectively mix with the oxygen transported by the air inlet duct 4, enabling the metallurgical work to proceed continuously, and effectively improving the metallurgical efficiency.

[0028] In a further optimized solution, the inner diameter of the end of the second connecting pipe 21 extending into the cylinder 1 is smaller than the inner diameter of the end of the second connecting pipe 21 communicating with the first connecting pipe 2. This enables the gas to enter the cylinder 1 at a higher flow rate, allowing the turbulent gas to be fully mixed with the oxygen.

[0029] In a further optimized solution, one end of the cylinder 1 is sealed, and an air outlet 13 is provided at the other end of the cylinder 1. An air inlet 14 is provided at the bottom of the cylinder 1. The air inlet 14 is fixedly connected and communicated with the air inlet duct 4. The air outlet 13 is communicated with the furnace group.

[0030] According to a further optimized solution, a plurality of second connecting pipes 21 are arranged at equal intervals and at an inclination.

[0031] According to a further optimized solution, a plurality of second connecting pipes 21 extend into one end of the cylinder 1 and are arranged near the gas outlet 13 .

[0032] By slanting the second connecting pipe 21 , the fuel gas ejected from the second connecting pipe 21 can be effectively mixed with the oxygen in the cylinder 1 , and the mixed gas can enter the furnace group through the gas outlet 13 under the impetus of the fuel gas.

[0033] According to a further optimized solution, the cylinder 1 comprises an outer shell, an inner wall of the outer shell is fixedly connected with a heat-insulating layer 11 , and an inner wall of the heat-insulating layer 11 is fixedly connected with a burner layer 12 .

[0034] The heat-insulating layer 11 is made of lightweight heat-insulating material, which can effectively reduce the overall weight of the cylinder 1 .

[0035] A further optimized solution is that the adjustment component includes a plurality of support rods 22, one end of the support rod 22 is fixedly connected to the inner wall of the second connecting tube 21, the other ends of all the support rods 22 are fixedly connected to the outer wall of the bearing 23, the inner wall of the bearing 23 is fixedly connected to the transmission rod 24, and the end of the transmission rod 24 extending outside the bearing 23 is fixedly connected to the fan blade 25.

[0036] The gas entering the second connecting pipe 21 can drive the fan blades 25 to rotate, and the rotation of the fan blades 25 causes turbulence of the gas in the second connecting pipe 21 .

[0037] To further optimize the solution, a plurality of support rods 22 are arranged at equal intervals.

[0038] In a further optimized solution, a semicircular ball 26 is fixedly connected to one end of the bearing 23 facing the first connecting pipe 2. The semicircular ball 26 enables the gas entering the second connecting pipe 21 to flow smoothly and drives the fan blade 25 to rotate.

[0039] According to a further optimized solution, the transmission rod 24 is arranged at the end of the bearing 23 away from the semicircular ball 26 .

[0040] Working process: The fuel gas enters the first connecting pipe 2 through the air inlet pipe 3, and then enters the second connecting pipe 21 through the first connecting pipe 2. At this time, the fuel gas first passes through the semi-sphere 26 and then drives the fan blade 25 to rotate. By driving the fan blade 25 to rotate with the fuel gas, the fuel gas generates turbulence. At the same time, since the inner diameter of the end of the second connecting pipe 21 extending into the cylinder 1 is smaller than the inner diameter of the end of the second connecting pipe 21 communicating with the first connecting pipe 2, the fuel gas can enter the cylinder 1 at a higher flow rate. At the same time, oxygen enters the cylinder 1 synchronously through the air inlet pipe 4. And because the ends of several second connecting pipes 21 extending into the cylinder 1 are inclined near the air outlet 13, the fuel gas with turbulence ejected from the second connecting pipe 21 can be effectively mixed with the oxygen in the cylinder 1, and the mixed gas is pushed by the fuel gas and enters the furnace group through the air outlet 13, effectively improving the effect of mixed combustion, enabling the metallurgical work to be carried out continuously, and effectively improving the metallurgical efficiency.

[0041] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying 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 construed as a limitation to the present invention.

[0042] The above-described embodiments are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A gas injection device for a furnace group, characterized in that: The invention comprises a cylinder (1), wherein an air inlet pipe (4) is arranged at the bottom of the cylinder (1), and an air inlet assembly is sleeved on the outer wall of the cylinder (1), wherein the air inlet assembly comprises a first connecting pipe (2), and the top surface of the first connecting pipe (2) is fixedly connected to and communicated with an air inlet pipe (3); the first connecting pipe (2) is fixedly connected to and communicated with a plurality of second connecting pipes (21), and the end of the second connecting pipe (21) away from the first connecting pipe (2) is connected to the cylinder (1), and an adjusting assembly is arranged in the end of the second connecting pipe (21) close to the first connecting pipe (2), and the adjusting assembly is used to generate turbulence in the gas entering the second connecting pipe (21).

2. The gas injection device for a furnace group according to claim 1, characterized in that: The inner diameter of the end of the second connecting tube (21) extending into the cylinder (1) is smaller than the inner diameter of the end of the second connecting tube (21) communicating with the first connecting tube (2).

3. The gas injection device for a furnace group according to claim 1, characterized in that: One end of the cylinder (1) is sealed, the other end of the cylinder (1) is provided with an air outlet (13), the bottom of the cylinder (1) is provided with an air inlet (14), and the air inlet (14) is fixedly connected to and communicated with the air inlet pipe (4).

4. The gas injection device for a furnace group according to claim 1, characterized in that: A plurality of second connecting pipes (21) are arranged at equal intervals and at an angle.

5. The gas injection device for a furnace group according to claim 3, characterized in that: A plurality of second connecting pipes (21) extend into one end of the cylinder (1) and are arranged close to the gas outlet (13).

6. The gas injection device for a furnace group according to claim 1, characterized in that: The cylinder (1) comprises an outer shell, the inner wall of the outer shell is fixedly connected to a heat-insulating layer (11), and the inner wall of the heat-insulating layer (11) is fixedly connected to a burner layer (12).

7. The gas injection device for a furnace group according to claim 1, characterized in that: The adjustment assembly comprises a plurality of support rods (22), one end of each support rod (22) is fixedly connected to the inner wall of the second connecting tube (21), the other end of each support rod (22) is fixedly connected to the outer wall of a bearing (23), the inner wall of the bearing (23) is fixedly connected to a transmission rod (24), and one end of the transmission rod (24) extending outside the bearing (23) is fixedly connected to a fan blade (25).

8. The gas injection device for a furnace group according to claim 7, characterized in that: A plurality of support rods (22) are arranged at equal intervals.

9. The gas injection device for a furnace group according to claim 7, characterized in that: A semicircular ball (26) is fixedly connected to one end of the bearing (23) facing the first connecting pipe (2).

10. The gas injection device for a furnace group according to claim 9, characterized in that: The transmission rod (24) is arranged at an end of the bearing (23) away from the semicircular ball (26).

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