A fuel mixing device

Abstract

The present invention discloses a fuel segmented mixing device, including a plurality of mixing components, a connector, an inlet seal, an outlet seal, an oxygen delivery pipe and an output pipe. The plurality of mixing components are interconnected through the connector to form a mixer body for segmented and sufficient mixing of multiple fuels. The inlet seal is arranged at the head of the mixer body, and the outlet seal is arranged at the tail of the mixer body to form a complete mixer. The oxygen delivery pipe is arranged on the inlet seal for oxygen delivery, and the output pipe is arranged on the outlet seal for connecting a burner. The present invention adopts a split structural design, and the mixer body can be freely assembled according to the type of mixed fuel actually required, thereby achieving segmented and sufficient mixing of multiple fuels, which not only improves the combustion efficiency of the mixed gas fuel, but also reduces the possibility of gas fuel deflagration.

Description

Technical Field

[0001] The invention relates to a fuel segmented mixing device. Background Art

[0002] Under the general background of "carbon neutrality and carbon peak", fossil fuels used in industrial kilns are gradually being replaced by clean energy such as hydrogen. As a representative of clean energy, hydrogen is widely used in the industrial field. However, hydrogen has a fast combustion speed and high energy density, and is extremely dangerous. Therefore, many manufacturers have tried to use clean fuels and fossil fuels for mixed combustion to reduce the proportion of fossil fuels used. However, if hydrogen and other fossil fuels are not mixed evenly during mixing, deflagration may occur after combustion. Therefore, it is of utmost importance to fully mix the mixed fuel before burning it. It is very necessary to develop a fuel segmented mixing device. Summary of the invention

[0003] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0004] The technical problem to be solved by the present invention is how to achieve full mixing of hydrogen with other fossil fuels.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a fuel segmented mixing device, which includes a plurality of mixing components, a connecting piece, an inlet head, an outlet head, an oxygen delivery pipe and an output pipe. The plurality of mixing components are interconnected by the connecting piece to form a mixer body, which is used for segmented and sufficient mixing of multiple fuels. The inlet head is arranged at the head of the mixer body, and the outlet head is arranged at the tail of the mixer body to form a complete mixer. The oxygen delivery pipe is arranged on the inlet head for delivering oxygen, and the output pipe is arranged on the outlet head for connecting a burner.

[0006] As a preferred solution of the fuel segmented mixing device described in the present invention, the mixing assembly includes a shell, a fuel delivery pipe, an annular nozzle and a metal filler. The fuel delivery pipe is arranged on the shell to deliver the external gas fuel to be mixed into the shell. The annular nozzle is arranged at the outlet end of the fuel delivery pipe in the shell. The metal filler is arranged at the tail end in the shell. The metal filler is composed of a plurality of metal corrugated sheets, and holes are evenly distributed on each metal corrugated sheet to increase the area through which the mixed gas flows when passing through the metal filler, thereby extending the mixing time of the mixed gas and achieving sufficient mixing of the mixed gas.

[0007] As a preferred solution of the fuel segmented mixing device described in the present invention, the connecting piece includes a first flange and a second flange, and the first flange and the second flange are respectively arranged at the front and rear ends of the shell, and the two adjacent shells are connected to each other through the first flange and the second flange to facilitate the rapid installation and disassembly of the mixing assembly.

[0008] As a preferred solution of the fuel segmented mixing device described in the present invention, wherein: a third flange is arranged on the inlet head, and the inlet head is connected to the first flange of the shell head through the third flange, so as to facilitate the rapid installation and disassembly of the inlet head and the mixer body; a fourth flange is arranged on the outlet head, and the outlet head is connected to the second flange of the shell tail through the fourth flange, so as to facilitate the rapid installation and disassembly of the outlet head and the mixer body; a fifth flange is arranged on the output pipe, so as to facilitate the connection between the output pipe and the burner.

[0009] As a preferred solution of the fuel segmented mixing device of the present invention, a breathable cap is provided at the outlet end of the oxygen delivery pipe so that oxygen can flow into the mixer evenly from all sides.

[0010] As a preferred solution of the fuel segmented mixing device described in the present invention, a baffle is arranged in the inlet head, and through holes are evenly distributed on the baffle, which further enables oxygen to flow into the shell evenly, greatly improving the mixing degree between oxygen and gas fuel.

[0011] As a preferred solution of the fuel segmented mixing device described in the present invention, the annular nozzle includes an annular tube and a straight tube, and a plurality of tiny pores are evenly distributed on the annular tube, so that the gas fuel entering the annular tube can enter the shell from all angles to achieve sufficient mixing between the gas fuel and oxygen or between the gas fuel and the mixed gas, one end of the straight tube is connected to the annular tube, and the other end of the straight tube is connected to the fuel delivery pipe.

[0012] As a preferred solution of the fuel segmented mixing device described in the present invention, wherein: the oxygen delivery pipe and the fuel delivery pipe are both provided with a one-way valve and a control valve, the one-way valve can prevent gas backflow, and the control valve can control the gas flow rate, so that the gas flow rate can be adjusted according to actual needs, thereby increasing the application scope of the device.

[0013] The beneficial effects of the present invention are:

[0014] 1. The mixing device adopts a split structure design, and the mixer body can be freely assembled according to the type of mixed fuel actually required, so as to achieve segmented and full mixing of multiple fuels, which not only improves the combustion efficiency of the mixed gas fuel, but also reduces the possibility of gas fuel deflagration;

[0015] 2. The overall structure of this mixing device is simple, low cost and high efficiency. It can be widely used in the combustion of mixed gases in industrial kilns. It is conducive to the application of clean fuels such as hydrogen energy and helps the development of the "carbon peak and carbon neutrality" cause. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0017] Figure 1 This is a schematic diagram of the overall structure of the fuel segmented mixing device.

[0018] Figure 2 It is a schematic diagram of the internal partial structure of the shell of the fuel segmented mixing device.

[0019] Figure 3 This is a schematic diagram of the connection structure of the oxygen delivery pipe and the breathable cap of the fuel segment mixing device.

[0020] Figure 4 This is a schematic diagram of the connection structure between the fuel delivery pipe and the annular nozzle of the fuel segment mixing device.

[0021] Figure 5 This is a schematic diagram of the structure of the annular nozzle of the fuel segmented mixing device.

[0022] Figure 6 This is a schematic diagram of the structure of the metal filler of the fuel staged mixing device.

[0023] In the figure: 1. mixing assembly; 11. shell; 12. fuel delivery pipe; 13. annular nozzle; 131. annular pipe; 1311. air hole; 132. straight pipe; 14. metal filler; 2. connector; 21. first flange; 22. second flange; 3. inlet head; 31. third flange; 4. outlet head; 41. fourth flange; 5. oxygen delivery pipe; 6. output pipe; 61. fifth flange; 7. breathable cap; 8. baffle; 81. through hole; 9. one-way valve; 10. control valve. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0027] Example

[0028] Reference Figures 1 to 6 The present embodiment provides a fuel segmented mixing device, comprising a plurality of mixing components 1, a connector 2, an inlet head 3, an outlet head 4, an oxygen delivery pipe 5 and an output pipe 6. The plurality of mixing components 1 are interconnected by the connector 2 to form a mixer body for segmented and full mixing of multiple fuels. The inlet head 3 is arranged at the head of the mixer body, and the outlet head 4 is arranged at the tail of the mixer body to form a complete mixer. The oxygen delivery pipe 5 is arranged on the inlet head 3 for delivering oxygen, and the output pipe 6 is arranged on the outlet head 4 for connecting a burner.

[0029] The number of mixing components 1 in this embodiment is two, that is, the two mixing components 1 are connected to each other through a connector 2 to form a mixer body, an inlet head 3 is installed at the head of the mixer body, and an outlet head 4 is installed at the tail of the mixer body to form a complete mixer, and the inlet head 3 and the outlet head 4 are both arc-shaped structures, with good stability and stress concentration resistance. The mixer achieves segmented and full mixing of two different gas fuels through two mixing components 1, which can greatly improve the mixing degree between fuel and fuel, and between fuel and oxygen, and outputs a gas that meets the process requirements. The mixed gas not only improves the combustion efficiency of the mixed gas fuel, but also reduces the possibility of gas fuel explosion, and improves the safety of fuel use. An oxygen delivery pipe 5 is detachably installed on the inlet head 3, and external oxygen is delivered to the mixer through the oxygen delivery pipe 5. An output pipe 6 is installed on the outlet head 4, and the mixer can be connected to the burner through the output pipe 6 to deliver the mixed gas to the burner for combustion. It should be noted that the device adopts a split structural design, and the number of mixing components 1 can be increased according to actual needs to achieve the mixing of multiple gas fuels.

[0030] Specifically, the mixing assembly 1 includes a shell 11, a fuel delivery pipe 12, an annular nozzle 13 and a metal filler 14. The fuel delivery pipe 12 is arranged on the shell 11, the annular nozzle 13 is arranged at the outlet end of the fuel delivery pipe 12 in the shell 11, and the metal filler 14 is arranged at the tail end of the shell 11.

[0031] The mixing assembly 1 in this embodiment is mainly composed of a shell 11, a fuel delivery pipe 12, an annular nozzle 13 and a metal filler 14. The shell 11 is cylindrical as a whole and serves as the installation base of the mixing assembly 1. The fuel delivery pipe 12 is detachably installed on the outside of the shell 11. The outlet end of the fuel delivery pipe 12 is located in the shell 11. The annular nozzle 13 is installed at the outlet end of the fuel delivery pipe 12 to deliver the external gas fuel to be mixed into the shell 11. A metal filler 14 is installed at the tail of the shell 11 to receive the mixed gas from the mixing area. The metal filler 14 is mainly composed of a plurality of corrugated metal sheets, each of which has holes evenly distributed thereon to increase the area through which the mixed gas flows when passing through the metal filler 14, thereby extending the mixing time of the mixed gas and increasing the contact area between the gases to achieve full mixing of the mixed gas.

[0032] Specifically, the connecting member 2 includes a first flange 21 and a second flange 22 . The first flange 21 and the second flange 22 are respectively disposed at the front and rear ends of the shell 11 . Two adjacent shells 11 are connected to each other through the first flange 21 and the second flange 22 .

[0033] The connecting member 2 in this embodiment is mainly composed of a first flange 21 and a second flange 22. The first flange 21 and the second flange 22 are respectively installed at the front and rear ends of the shell 11, so that the first flange 21 and the second flange 22 can be fixed by bolts between two adjacent shells 11 to achieve mutual connection between the two adjacent shells 11, which is convenient for rapid installation and disassembly of the mixing assembly 1.

[0034] Furthermore, a third flange 31 is provided on the inlet head 3, and the inlet head 3 is connected to the first flange 21 at the head of the shell 11 through the third flange 31. A fourth flange 41 is provided on the outlet head 4, and the outlet head 4 is connected to the second flange 22 at the tail of the shell 11 through the fourth flange 41. A fifth flange 61 is provided on the output pipe 6.

[0035] In this embodiment, a third flange 31 is installed on the inlet head 3. During installation, the third flange 31 and the first flange 21 can be fixed by bolts to achieve connection between the inlet head 3 and the shell 11, so as to facilitate quick installation and disassembly of the inlet head 3 and the mixer body. A fourth flange 41 is installed on the outlet head 4. During installation, the fourth flange 41 and the second flange 22 can be fixed by bolts to achieve connection between the outlet head 4 and the shell 11, so as to facilitate quick installation and disassembly of the outlet head 4 and the mixer body. A fifth flange 61 is installed on the output pipe 6, so that the output pipe 6 is connected to the burner through the fifth flange 61, so as to achieve quick connection between the output pipe 6 and the burner.

[0036] Furthermore, a breathable cap 7 is provided at the outlet end of the oxygen delivery tube 5 .

[0037] The outlet end of the oxygen delivery tube 5 is located inside the inlet seal 3. In this embodiment, a breathable cap 7 is installed at the outlet end of the oxygen delivery tube 5 so that oxygen can flow into the mixer evenly from all sides after flowing out of the oxygen delivery tube 5, thereby increasing the diffusion range of oxygen. The breathable cap 7 can not only prevent oxygen from flowing into the mixer from a single direction, but also expand the angle of oxygen inflow, so that oxygen can flow into the mixer more evenly, and can also prevent the gas in the mixer from flowing back into the oxygen delivery tube 5.

[0038] Furthermore, a baffle 8 is provided in the inlet head 3, and through holes are evenly distributed on the baffle 8.

[0039] In this embodiment, a baffle plate 8 is installed at a position close to the third flange 31 in the inlet head 3. A plurality of through holes are evenly distributed on the baffle plate 8, thereby increasing the diffusion range of oxygen, further allowing oxygen to evenly flow into the mixing area in the shell 11, and greatly improving the degree of mixing between oxygen and gas fuel.

[0040] Furthermore, the annular nozzle 13 includes an annular tube 131 and a straight tube 132 . The annular tube 131 is evenly distributed with a plurality of tiny pores 1311 . One end of the straight tube 132 is connected to the annular tube 131 , and the other end of the straight tube 132 is connected to the fuel delivery pipe 12 .

[0041] The annular nozzle 13 in this embodiment is mainly composed of an annular tube 131 and a straight tube 132. A number of tiny pores 1311 are evenly distributed on the annular tube 131, so that the gas fuel entering the annular tube 131 can enter the shell 11 from all angles, increasing the diffusion range of the gas fuel to achieve sufficient mixing between the gas fuel and oxygen or between the gas fuel and the mixed gas. A straight tube 132 is installed on the top of the annular tube 131. The straight tube 132 is connected to the inside of the annular tube 131, and the other end of the straight tube 132 is connected to the outlet end of the fuel delivery pipe 12 extending into the shell 11, so that the gas fuel in the fuel delivery pipe 12 enters the annular tube 131 through the straight tube 132.

[0042] Furthermore, a one-way valve 9 and a control valve 10 are provided on the oxygen delivery pipe 5 and the fuel delivery pipe 12 .

[0043] In this embodiment, a one-way valve 9 is installed on both the oxygen delivery pipe 5 and the fuel delivery pipe 12 to prevent gas backflow. A control valve 10 is installed on both the oxygen delivery pipe 5 and the fuel delivery pipe 12. The flow rate of the gas can be controlled by the control valve 10, so that the gas flow rate can be adjusted according to actual needs, thereby increasing the application scope of the device.

[0044] During use, by opening the control valve 10 on the oxygen delivery pipe 5, external oxygen flows into the oxygen delivery pipe 5. When the oxygen flows to the outlet end of the oxygen delivery pipe 5, the air permeable cap 7 at the outlet end of the oxygen delivery pipe 5 can prevent the oxygen from flowing out directly. The air permeable cap 7 can allow the oxygen to flow into the mixer evenly from all sides to increase the diffusion range of the oxygen, so as to facilitate the full mixing of the oxygen and the gas fuel. The outflowing oxygen then enters the mixing area of ​​the mixer through the through holes on the baffle 8. The through holes on the baffle 8 once again increase the diffusion range of the oxygen, further allowing the oxygen to flow evenly into the mixing area of ​​the mixer, greatly improving the mixing degree between the oxygen and the gas fuel. During this process, by opening the control valve 10 on the fuel delivery pipe 12, the first gas fuel flows into the fuel delivery pipe 12, and flows from the fuel delivery pipe 12 into the annular pipe 131 through the straight pipe 132 of the annular nozzle 13, and then flows out from the tiny air holes 1311 on the annular pipe 131 to the mixing area of ​​the mixer. The annular nozzle 13 allows the first gas fuel to enter the mixing area of ​​the mixer from all angles, increasing the diffusion range of the first gas fuel to achieve full mixing between the first gas fuel and oxygen or between the gas fuel and the mixed gas. After the oxygen and the first gas fuel are preliminarily mixed, the preliminarily mixed gas will enter the first The metal filler 14 at the tail of the shell 11 is mainly composed of a plurality of metal corrugated sheets, each of which has holes evenly distributed thereon to increase the area through which the mixed gas flows when passing through the metal filler 14, thereby extending the mixing time of the mixed gas and increasing the contact area between the gases, once again achieving full mixing of the oxygen and the first gas fuel, and the fully mixed oxygen and the first gas fuel flow out of the metal filler 14. During this process, the control valve 10 on the second fuel delivery pipe 12 is opened, and the second gas fuel flows into the fuel delivery pipe 12, and flows from the fuel delivery pipe 12 to the annular pipe 1 through the straight pipe 132 of the annular nozzle 13. 31, and then flows out from the tiny air holes 1311 on the annular tube 131 to the mixing area of ​​the mixer, so that the second gas fuel is preliminarily mixed with the mixture of oxygen and the first gas fuel, and then the preliminarily mixed gas enters the metal filler 14 at the tail of the second shell 11, and the metal filler 14 fully mixes the mixture of oxygen and the first gas fuel and the second gas fuel, thereby achieving full mixing of oxygen, the first gas fuel and the second gas fuel, which not only improves the combustion efficiency of the mixed gas fuel, but also reduces the possibility of gas fuel deflagration. Finally, the mixed mixture enters the burner through the output pipe 6 for combustion.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A fuel segmented mixing device, characterized in that: The invention comprises a plurality of mixing components (1), a connecting piece (2), an inlet seal (3), an outlet seal (4), an oxygen delivery pipe (5) and an output pipe (6); the plurality of mixing components (1) are connected to each other through the connecting piece (2) to form a mixer body for fully mixing multiple fuels in sections; the inlet seal (3) is arranged at the head of the mixer body; the outlet seal (4) is arranged at the tail of the mixer body to form a complete mixer; the oxygen delivery pipe (5) is arranged on the inlet seal (3) for delivering oxygen; the output pipe (6) is arranged on the outlet seal (4) for connecting to a burner.

2. The fuel staged mixing device according to claim 1, characterized in that: The mixing assembly (1) comprises a shell (11), a fuel delivery pipe (12), an annular nozzle (13) and a metal filler (14); the fuel delivery pipe (12) is arranged on the shell (11); the annular nozzle (13) is arranged at the outlet end of the fuel delivery pipe (12) in the shell (11); and the metal filler (14) is arranged at the tail end in the shell (11).

3. The fuel staged mixing device according to claim 2, characterized in that: The connecting member (2) comprises a first flange (21) and a second flange (22), wherein the first flange (21) and the second flange (22) are respectively arranged at the front and rear ends of the shell (11), and two adjacent shells (11) are connected to each other via the first flange (21) and the second flange (22).

4. The fuel staged mixing device according to claim 3, characterized in that: The inlet seal head (3) is provided with a third flange (31), and the inlet seal head (3) is connected to the first flange (21) at the head of the shell (11) through the third flange (31); the outlet seal head (4) is provided with a fourth flange (41), and the outlet seal head (4) is connected to the second flange (22) at the tail of the shell (11) through the fourth flange (41); and the output pipe (6) is provided with a fifth flange (61).

5. The fuel staged mixing device according to claim 1, characterized in that: The outlet end of the oxygen delivery tube (5) is provided with a breathable cap (7).

6. The fuel staged mixing device according to claim 1, characterized in that: A baffle (8) is arranged inside the inlet seal head (3), and through holes (81) are evenly distributed on the baffle (8).

7. The fuel staged mixing device according to claim 2, characterized in that: The annular nozzle (13) comprises an annular tube (131) and a straight tube (132); a plurality of tiny pores (1311) are evenly distributed on the annular tube (131); one end of the straight tube (132) is connected to the annular tube (131); and the other end of the straight tube (132) is connected to the fuel delivery pipe (12).

8. The fuel staged mixing device according to claim 2, characterized in that: The oxygen delivery pipe (5) and the fuel delivery pipe (12) are both provided with a one-way valve (9) and a control valve (10).

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