Fuel gas mixing device

Abstract

The utility model relates to the technical field of mixing, in particular to a fuel gas mixing device. The fuel gas mixing device comprises a mixing tank, a conical disc with an upward conical head is fixedly erected in the mixing tank, a gas inlet assembly is arranged at the bottom of the mixing tank, and a stirring assembly is further installed in the mixing tank. According to the fuel gas mixing device, due to the fact that the axes of the exhaust holes A and the annular pipe B in the nozzle direction are perpendicular to each other, hydrogen and natural gas are mixed after being sprayed mutually, the speed of the mixed gas is reduced due to the fact that the two kinds of gas impact each other when being mixed, the mixing degree of the two kinds of gas is greatly improved, and the fuel gas mixing efficiency is improved. When the pressing disc slides down, the space of the containing cavity between the pressing disc and the conical disc is reduced, part of gas is sprayed into the containing cavity above the pressing disc through the obliquely-formed gas pressing holes and then mixed again, part of gas flows back into the containing cavity below the conical disc, the mixing degree of the whole gas is greatly increased, and the mixing time of the whole gas is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of mixing, in particular to a fuel gas mixing device. Background Art

[0002] At present, about 95% of hydrogen energy is used in the industrial field. At the same time, the industrial field accounts for the largest proportion of national energy consumption (about 65%), and the task of energy conservation, carbon reduction and consumption reduction is arduous. The distributed hydrogen production and heating system is a new type of hydrogen energy technology equipment that is green and safe and can replace natural gas. It adopts a hydrogen energy application method that is ready for use, effectively avoiding the safety risks in the hydrogen storage and transportation links, saving storage and transportation costs, and making hydrogen energy applications have the conditions for market promotion and application. The electrolyzer of the distributed hydrogen production and heating system adopts a membrane-free structure design, and the operating temperature of the alkali solution is about 39°C. Hydrogen is directly generated during the operation of the equipment, and then mixed with about 50% natural gas as a low-carbon and high-calorific value fuel gas used in the steam and calcination fields;

[0003] At present, hydrogen and natural gas are basically mixed by devices such as mixing skids or static mixers (mixing shells). First, the source hydrogen and natural gas enter the mixing device after pressure regulation, and a guide pipe is set at the hydrogen inlet to mix the diffused hydrogen and natural gas for the first time. Then the two gases are fully mixed by a stirring and mixing device. However, the fluidity of the gas is used to mix several gases together, so the gas mixing efficiency is slow, and the gas mixing is not uniform enough, resulting in a large accuracy error of the final mixed gas.

[0004] Therefore, it is necessary to provide a new fuel gas mixing device to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a fuel gas mixing device.

[0006] The fuel gas mixing device provided by the utility model comprises a mixing tank, wherein a conical disk with a cone head facing upward is fixedly mounted in the mixing tank, and a plurality of evenly distributed overflow holes are opened on the conical disk;

[0007] An air intake assembly is provided at the bottom of the blending tank, and the air intake assembly includes an annular tube A and an annular tube B, the annular tube A and the annular tube B are fixedly connected by a plurality of annularly distributed middle brackets, and the annular tube A and the annular tube B are distributed inside and outside and are coaxially arranged, the annular tube A is provided with a plurality of annularly distributed exhaust holes A arranged downwardly inclined toward the axis on the inner wall of the annular tube A, and the annular tube B is provided with a plurality of annularly distributed exhaust holes B arranged downwardly inclined toward the axis on the inner wall of the annular tube B;

[0008] The mixing tank is also provided with a stirring assembly, through which the gas entering the mixing tank from the air intake assembly is mixed.

[0009] Preferably, the axes of the exhaust hole A and the nozzle direction of the annular tube B are arranged perpendicular to each other.

[0010] Preferably, the air intake assembly also includes an air collecting cylinder, on the outer cylinder wall of the air collecting cylinder is fixedly sleeved a diverter plate which is interconnected with the air collecting cylinder, and the outer ring wall of the diverter plate is fixedly connected to the annular tube A and is interconnected with the annular tube A, and the bottom of the air collecting cylinder is fixedly installed with an air intake pipe A, and the air intake pipe A extends out of the mixing tank.

[0011] Preferably, an air intake pipe B is fixedly mounted on the annular pipe B, and the air intake pipe B extends out of the mixing tank.

[0012] Preferably, the stirring assembly includes a servo motor, which is fixedly mounted on the top of the mixing tank through a frame, and the output end of the servo motor is inserted into the mixing tank and fixedly mounted with a stirring rod, the stirring rod passes through the center of the conical disk and extends to above the air collecting cylinder, and the extended end of the stirring rod is fixedly mounted with a stirring blade.

[0013] Preferably, a reciprocating threaded section is provided on the stirring rod above the conical disk, and a threaded pressing disk is sleeved on the reciprocating threaded section, and a plurality of evenly distributed and obliquely arranged air compression holes are opened on the pressing disk.

[0014] Preferably, a plurality of vertically arranged guide rods are fixedly installed between the inner top wall of the mixing tank and the upper surface of the conical disk, and the guide rods respectively pass through the guide holes opened in the pressing disk and are slidably connected to the guide holes.

[0015] Preferably, an exhaust pipe is fixedly installed on the top of the blending tank.

[0016] Compared with the related art, the fuel gas mixing device provided by the utility model has the following beneficial effects:

[0017] 1. In the utility model, since the axes of the nozzle direction of the exhaust hole A and the annular tube B are arranged perpendicular to each other, the hydrogen and the natural gas are mixed with each other after being sprayed. Since the two gases impact each other when mixed, the velocity of the mixed gas is reduced, which greatly improves the mixing degree of the two gases;

[0018] 2. The utility model starts the servo motor to drive the stirring blades to rotate at high speed, so that the stirring blades effectively stir the mixed gas below the conical disk, driving it to perform secondary mixing, and the pressing disk slides back and forth up and down along the reciprocating threaded section. When the pressing disk slides down, the cavity space between the pressing disk and the conical disk is reduced. At this time, the mixed gas is compressed by the pressing disk, and part of the gas is sprayed into the cavity above the pressing disk through the inclined compression holes for remixing, and part of the gas flows back from the overflow holes on the conical disk to the cavity below the conical disk under the negative pressure of the pressing disk, thereby driving the mixed gas to mix again with the mixed gas in the cavity below the conical disk, thereby greatly enhancing the mixing degree and mixing time of the entire gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of a preferred embodiment of the fuel gas mixing device provided by the utility model;

[0020] Figure 2 for Figure 1 The structural schematic diagram of the cross-section of the blending tank shown;

[0021] Figure 3 for Figure 1 A schematic diagram of the structure of the air intake assembly shown;

[0022] Figure 4 for Figure 3 The schematic structural diagram of the air intake assembly cross-section shown;

[0023] Figure 5 for Figure 1 Schematic diagram of the structure of the stirring assembly shown.

[0024] Numbers in the figure: 1. Mixing tank; 11. Exhaust pipe; 2. Conical disk; 2a. Overflow hole; 3. Intake assembly; 31. Annular tube A; 31a. Exhaust hole A; 32. Annular tube B; 32a. Exhaust hole B; 33. Gas collecting cylinder; 331. Diverter disk; 34. Intake pipe A; 35. Intake pipe B; 36. Center bracket; 4. Stirring assembly; 41. Servo motor; 42. Stirring rod; 421. Reciprocating threaded section; 43. Stirring blade; 44. Pressing disk; 44a. Guide hole; 44b. Pressure hole; 5. Guide rod. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0026] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0027] See also Figures 1 to 5 An embodiment of the utility model provides a fuel gas mixing device, which includes a mixing tank 1, a conical disk 2, an air intake component 3 and a stirring component 4.

[0028] In the embodiments of the present invention, please refer to Figures 1 to 5 The mixing tank 1 is fixed with a cone-shaped disk 2 with a cone head facing upward, and the cone-shaped disk 2 is provided with a plurality of evenly distributed overflow holes 2a, and the bottom of the mixing tank 1 is provided with an air intake assembly 3, and the air intake assembly 3 includes an annular pipe A31 and an annular pipe B32, the annular pipe A31 and the annular pipe B32 are fixedly connected by a plurality of annularly distributed middle brackets 36, and the annular pipe A31 and the annular pipe B32 are distributed inside and outside and are coaxially arranged, the annular pipe A31 is provided with a plurality of annularly distributed exhaust holes A31a arranged downwardly inclined toward the axis on the inner wall of the annular pipe A31, and the annular pipe B32 is provided with a plurality of annularly distributed exhaust holes B32a arranged downwardly inclined toward the axis on the inner wall of the annular pipe B32, and the axes of the nozzle directions of the exhaust holes A31a and the annular pipe B32 are arranged perpendicular to each other;

[0029] The air intake assembly 3 also includes an air collecting cylinder 33, on the outer cylinder wall of the air collecting cylinder 33 is fixedly sleeved a diverter plate 331 which is interconnected with the air collecting cylinder 33, and the outer ring wall of the diverter plate 331 is fixedly connected to the annular tube A31 and is interconnected with the annular tube A31, an air intake pipe A34 is fixedly installed at the bottom of the air collecting cylinder 33, and the air intake pipe A34 extends out of the mixing tank 1, and an air intake pipe B35 is fixedly installed on the annular tube B32, and the air intake pipe B35 extends out of the mixing tank 1.

[0030] It should be noted that the hydrogen generated by the equipment is interconnected with the intake pipe A34, and the intake pipe B35 is interconnected with the natural gas supply pipeline, so that the hydrogen enters the gas collecting cylinder 33 and is diverted to the annular pipe A31 by the diverter plate 331, and then is sprayed out downwardly from the exhaust hole A31a on the annular pipe A31, and the natural gas is sprayed out downwardly through the exhaust hole B32a on the annular pipe B32. Since the axes of the nozzle directions of the exhaust hole A31a and the annular pipe B32 are arranged perpendicular to each other, the hydrogen and the natural gas are mixed with each other after being sprayed with each other. Since the two gases impact each other when mixing, the velocity of the mixed gas is driven to decrease, which greatly improves the mixing degree of the two gases.

[0031] In the embodiments of the present invention, please refer to Figures 1 to 5An exhaust pipe 11 is fixedly installed on the top of the blending tank 1, and a stirring assembly 4 is also installed in the blending tank 1, through which the gas entering the blending tank 1 from the air intake assembly 3 is mixed, and the stirring assembly 4 includes a servo motor 41, which is fixedly installed on the top of the blending tank 1 through a frame, and the output end of the servo motor 41 is inserted into the blending tank 1 and fixedly installed with a stirring rod 42, the stirring rod 42 passes through the center of the conical disk 2 and extends to the top of the gas collecting cylinder 33, and the extended end of the stirring rod 42 is fixedly installed with a stirring blade 43;

[0032] A reciprocating threaded section 421 is provided on the stirring rod 42 above the conical disk 2, and a threaded pressing disk 44 is sleeved on the reciprocating threaded section 421, and a plurality of evenly distributed and obliquely arranged air compression holes 44b are opened on the pressing disk 44, and a plurality of vertically arranged guide rods 5 are fixedly installed between the inner top wall of the mixing tank 1 and the upper surface of the conical disk 2, and the guide rods 5 respectively pass through the guide holes 44a opened on the pressing disk 44 and are slidably connected with the guide holes 44a.

[0033] It should be noted that: the servo motor 41 is turned on to drive the stirring blade 43 to rotate at a high speed, so that the stirring blade 43 effectively stirs the mixed gas below the conical disk 2, driving it to perform secondary mixing, and the mixed gas floats upward, so as to enter the upper chamber of the mixing tank 1 through different overflow holes 2a on the conical disk 2. At the same time, since the pressing disk 44 is restricted by the guide rod 5, the pressing disk 44 threadedly connected to the reciprocating threaded section 421 on the stirring rod 42 is driven to slide reciprocatingly up and down along the reciprocating threaded section 421 as the stirring rod 42 rotates;

[0034] When the pressing plate 44 slides upward, the cavity space between the pressing plate 44 and the conical plate 2 increases, and the flow rate of the mixed gas decreases. Part of the mixed gas is discharged from the compressed gas hole 44b on the pressing plate 44 and discharged from the exhaust pipe 11.

[0035] When the pressing disk 44 slides down, the cavity space between the pressing disk 44 and the conical disk 2 is reduced. At this time, the mixed gas is compressed by the pressing disk 44, and part of the gas is sprayed into the cavity above the pressing disk 44 through the inclined compression holes 44b for remixing. Under the action of the negative pressure of the pressing disk 44, part of the gas flows back to the cavity below the conical disk 2 from the overflow holes 2a on the conical disk 2, thereby driving the mixed gas to mix with the mixed gas in the cavity below the conical disk 2 again, thereby greatly enhancing the mixing degree and mixing time of the entire gas.

[0036] The working principle of the fuel gas mixing device provided by the utility model is as follows:

[0037] The hydrogen generated by the equipment is connected to the air inlet pipe A34, and the air inlet pipe B35 is connected to the natural gas supply pipeline, so the hydrogen enters the gas collecting cylinder 33 and is diverted to the annular pipe A31 by the diverter plate 331, and then is sprayed out downwardly from the exhaust hole A31a on the annular pipe A31, and the natural gas is sprayed out downwardly through the exhaust hole B32a on the annular pipe B32. Since the axes of the exhaust hole A31a and the nozzle direction of the annular pipe B32 are arranged perpendicular to each other, the hydrogen and the natural gas are mixed with each other after being sprayed. Since the two gases impact each other when mixed, the speed of the mixed gas is driven to decrease, which greatly improves the mixing degree of the two gases. The servo motor 41 is turned on to drive the stirring blade 43 to rotate at a high speed, so that the stirring blade 43 effectively stirs the mixed gas below the conical disk 2, driving it to be mixed for the second time, and the mixed gas floats upward, so it enters the upper chamber of the mixing tank 1 through different overflow holes 2a on the conical disk 2. At the same time , since the pressing plate 44 is limited by the guide rod 5, and as the stirring rod 42 rotates, the pressing plate 44 threadedly connected to the reciprocating threaded section 421 on the stirring rod 42 is driven to slide up and down along the reciprocating threaded section 421; and when the pressing plate 44 slides up, the cavity space between the pressing plate 44 and the conical plate 2 increases, at this time the flow rate of the mixed gas decreases, and part of the mixed gas is discharged from the compressed gas hole 44b on the pressing plate 44 and discharged from the exhaust pipe 11; and when the pressing plate 44 slides down, the pressing plate 44 The space of the cavity between the conical disk 2 is reduced. At this time, the mixed gas is compressed by the pressing disk 44, and part of the gas is ejected into the cavity above the pressing disk 44 through the inclined compression holes 44b for remixing. Part of the gas flows back from the overflow holes 2a on the conical disk 2 to the cavity below the conical disk 2 under the negative pressure of the pressing disk 44, thereby driving the mixed gas to mix with the mixed gas in the cavity below the conical disk 2 again, thereby greatly enhancing the mixing degree and mixing time of the entire gas.

[0038] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0039] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A fuel gas mixing device, characterized in that: The invention comprises a mixing tank (1), wherein a fixed frame is provided inside the mixing tank (1) with a conical disk (2) with the cone head facing upward, and a plurality of evenly distributed overflow holes (2a) are provided on the conical disk (2); An air intake assembly (3) is provided at the bottom of the mixing tank (1), and the air intake assembly (3) includes an annular tube A (31) and an annular tube B (32), the annular tube A (31) and the annular tube B (32) are fixedly connected by a plurality of annularly distributed middle brackets (36), and the annular tube A (31) and the annular tube B (32) are distributed inside and outside and coaxially arranged, and the annular tube A (31) is provided with a plurality of annularly distributed exhaust holes A (31a) arranged downwardly in an inclined manner toward the axis on the inner wall of the annular tube (31), and the annular tube B (32) is provided with a plurality of annularly distributed exhaust holes B (32a) arranged downwardly in an inclined manner toward the axis on the inner wall of the annular tube (32); A stirring assembly (4) is also installed in the blending tank (1), and the gas entering the blending tank (1) from the air intake assembly (3) is mixed by the stirring assembly (4).

2. The fuel gas mixing device according to claim 1, characterized in that: The axes of the exhaust hole A (31a) and the nozzle direction of the annular tube B (32) are arranged perpendicular to each other.

3. The fuel gas mixing device according to claim 1, characterized in that: The air intake assembly (3) further comprises an air collecting cylinder (33), wherein a diverter disc (331) in communication with the air collecting cylinder (33) is fixedly sleeved on the outer cylinder wall of the air collecting cylinder (33), and the outer ring wall of the diverter disc (331) is fixedly connected to the annular tube A (31) and in communication with the annular tube A (31), and an air intake pipe A (34) is fixedly mounted on the bottom of the air collecting cylinder (33), and the air intake pipe A (34) extends out of the mixing tank (1).

4. The fuel gas mixing device according to claim 3, characterized in that: An air intake pipe B (35) is fixedly mounted on the annular pipe B (32), and the air intake pipe B (35) extends out of the blending tank (1).

5. The fuel gas mixing device according to claim 3, characterized in that: The stirring assembly (4) includes a servo motor (41), which is fixedly mounted on the top of the mixing tank (1) through a frame, and an output end of the servo motor (41) is inserted into the mixing tank (1) and fixedly mounted with a stirring rod (42), the stirring rod (42) passes through the center of the conical disk (2) and extends to the top of the gas collecting cylinder (33), and a stirring blade (43) is fixedly mounted on the extended end of the stirring rod (42).

6. The fuel gas mixing device according to claim 5, characterized in that: A reciprocating threaded section (421) is provided on the stirring rod (42) above the conical disk (2), and a threaded pressing disk (44) is sleeved on the reciprocating threaded section (421), and a plurality of evenly distributed and obliquely arranged air compression holes (44b) are provided on the pressing disk (44).

7. The fuel gas mixing device according to claim 6, characterized in that: A plurality of vertically arranged guide rods (5) are fixedly installed between the inner top wall of the mixing tank (1) and the upper surface of the conical disk (2), and the guide rods (5) respectively pass through the guide holes (44a) opened in the pressing disk (44) and are slidably connected to the guide holes (44a).

8. The fuel gas mixing device according to claim 1, characterized in that: An exhaust pipe (11) is fixedly mounted on the top of the blending tank (1).

Images