TWI761763B - Gas mixing tank - Google Patents

Abstract

A gas mixing tank is provided to overcome the problem of low combustion efficiency and incomplete combustion of the gas fuel used in conventional boiler system. The gas mixing tank includes a tank and four deflectors. The tank has an accommodation space and an axial centerline, with a radial projection plane being orthogonal to the axial centerline. The tank includes a first end, a second end opposite to the first end. A hydrogen inlet and an air inlet are adjacent to the first end. The second end has an air outlet. The four deflectors are spaced apart on the same helical path. Each two axially adjacent deflectors has a height difference. An angle forms between each upper surface of the four deflectors and the inner surface of the tank, which is 45 degree. Each of the four deflectors projects into a quarter ring on the radial projection plane.

Description

gas mixing tank

The present invention relates to a gas mixing tank, especially a gas mixing tank for mixing gas fuel.

A boiler is a device that uses the heat energy released by the combustion of fuel to heat water or other working fluids to generate steam, hot water or other working fluids. The boiler is basically composed of two parts: the boiler and the furnace. The fuel is supplied to the furnace and burned, and the heat energy is transferred to the pot by means of heat conduction, convection or radiation, and the heat of the flue gas is transferred to the water or working medium in the pot.

Depending on the boiler equipment, the fuel system used in the boiler can be coal or oil as the main fuel, and air is added to support the combustion during the combustion process to improve the combustion efficiency. However, in addition to the combustible gas such as hydrogen and oxygen, the air However, it also contains non-combustible gases such as carbon dioxide and argon. Therefore, if conventional air is used as a combustion aid, the non-flammable air in the air will cause the combustion temperature in the boiler to be low, which will reduce the combustion efficiency of the gas fuel, which will lead to gas Burns incompletely and produces environmentally hazardous waste.

In view of this, it is true that the conventional boiler system still needs to be improved.

In order to solve the above problems, the purpose of the present invention is to provide a gas mixing tank, which can increase the combustion temperature in the boiler to improve the combustion efficiency of the gas fuel.

Another object of the present invention is to provide a gas mixing tank which can completely burn the gaseous fuel so as to avoid the generation of waste which is harmful to the environment.

The directionality or similar terms used throughout the present disclosure, such as "front", "back", "left", "right", "top (top)", "bottom (bottom)", "inside", "outside" , "side surface", etc., mainly refer to the directions of the attached drawings, each directionality or its similar terms are only used to assist the description and understanding of the various embodiments of the present invention, and are not intended to limit the present invention.

The use of the quantifier "a" or "an" for the elements and components described throughout the present invention is only for convenience and provides a general meaning of the scope of the present invention; in the present invention, it should be construed as including one or at least one, and a single The concept of also includes the plural case unless it is obvious that it means otherwise.

Similar terms such as "combined", "combined" or "assembled" mentioned in the whole text of the present invention mainly include the components that can be separated without destroying the components after being connected, or the components cannot be separated after being connected, which are common knowledge in the field. It can be selected according to the material of the components to be connected or the assembly requirements.

The gas mixing tank of the present invention comprises: a tank body with an accommodating space, the tank body has an axial centerline, a radial projection reference plane is orthogonal to the axial centerline, and the tank body has an axial centerline. Opposite a first end and a second end, a hydrogen inlet and an air inlet are adjacent to the first end, the second end has an air outlet, the inner circumferential surface of the groove body is projected on the radial reference plane The upper part is circular; and four guide fins are respectively connected to the inner circumferential surface of the tank body by an outer arc edge, and the four guide fins are located on the same spiral path at intervals. It has an opposite upper surface and a lower surface, the upper surface faces the second end, the lower surface faces the first end, the axial centerline passes through an axial center surface, and on the axial center surface, each guide There is an included angle between the upper surface of the flow sheet and the inner circumferential surface of the groove body, and the included angle is 45 degrees.

Accordingly, the gas mixing tank of the present invention can uniformly mix hydrogen and air through the four guide vanes, and send the mixed gas to the boiler for combustion support, so as to improve the combustion efficiency of the gas fuel and increase the boiler efficiency. The combustion temperature in the interior, the complete combustion of the gaseous fuel, and the avoidance of the generation of environmentally harmful waste, etc.

Wherein, the hydrogen inlet has a first section, the air inlet has a second section, and the area of the first section is smaller than that of the second section. In this way, the introduction speed of hydrogen and air is not equal, which has the effect of improving the mixing uniformity of the gas.

Wherein, the area of the second section is four times the area of the first section. In this way, the flow velocity difference of the gas can be formed by the area difference of the section, which has the effect of improving the mixing uniformity of the gas.

Wherein, a pressurizing nozzle is connected to the hydrogen inlet and generates a hydrogen gas flow, and an air supply element is connected to the air inlet and generates an air flow. In this way, hydrogen and air can be introduced into the tank and mixed, which has the effect of improving the mixing of hydrogen and air.

Wherein, the flow velocity of the hydrogen gas flow is greater than the flow velocity of the air flow. In this way, it has the effect of improving the mixing efficiency of the gas.

Wherein, the flow velocity of the hydrogen gas flow is eight times the flow velocity of the air flow. In this way, it has the effect of increasing the gas flow speed and improving the mixing efficiency of the gas.

Wherein, any two adjacent guide vanes have the same axial height difference on the axial center plane, and the axial height difference is between 15 and 35 cm. In this way, the system has the functions of increasing the uniformity of mixing and increasing the flow velocity of the gas.

Wherein, the four guide vanes are a first guide vane, a second guide vane, a third guide vane and a fourth guide vane in sequence from the first end to the second end, and are projected on the radial direction reference On the surface, the first guide vane and the second guide vane are arranged symmetrically. In this way, there is a space between the first guide plate and the second guide plate for the gas to flow and mix, which has the effect of increasing the gas flow and mixing speed.

Wherein, the third guide fin and the first guide fin are axially overlapped, and the fourth guide fin and the second guide fin are axially overlapped. In this way, the tank system has an axial gas flow space for the gas to flow and mix, which has the effect of increasing the flow velocity of the gas and increasing the combustion temperature of the mixed gas.

Wherein, the first guide fin, the second guide fin, the third guide fin and the fourth guide fin together form an annular shape on the radial projection reference plane. In this way, the gas is guided by the four guide fins and the axial height difference, so that the gas in the tank body can flow and mix along the four guide fins, which has the effect of forming a spiral moving airflow .

〔this invention〕

1: tank body

1a: first end

1b: second end

11: Hydrogen inlet

12: Air inlet

13: Air outlet

14: Connection part

2: deflector

2a: The first deflector

2b: Second deflector

2c: The third deflector

2d: Fourth deflector

21: Outer arc edge

22: Upper surface

23: Lower surface

24: Inner arc edge

25: Connecting Edges

3: Boiler

31: Burner

D: air supply

E: accommodating space

F1: Hydrogen flow

F2: Airflow

H: Axial height difference

P: pressurized nozzle

R1: first section

R2: Second section

S1: Radial projection datum

S2: Axial center plane

T: tube body

X: Axial centerline

θ: included angle

[FIG. 1] A perspective view of the first embodiment of the present invention.

[FIG. 2] A front view of the first embodiment of the present invention.

[Fig. 3] A cross-sectional view taken along line A-A in Fig. 1. [Fig.

[FIG. 4] A diagram showing the arrangement of the guide vanes according to the first embodiment of the present invention.

[FIG. 5] A diagram showing the flow of gas according to the first embodiment of the present invention.

[FIG. 6] A perspective view of the first embodiment of the present invention connected to a boiler.

[FIG. 7] A perspective view of a second embodiment of the present invention.

[Fig. 8] A cross-sectional view taken along line B-B in Fig. 7.

In order to make the above-mentioned and other purposes, features and advantages of the present invention more obvious and easy to understand, the preferred embodiments of the present invention are exemplified below, and are described in detail as follows in conjunction with the accompanying drawings: Please refer to the first and second drawings. As shown, it is the first embodiment of the gas mixing tank of the present invention, It includes a groove body 1 and four guide vanes 2 , and the four guide vanes 2 are located on the inner circumferential surface of the groove body 1 .

The tank body 1 is used for accommodating and mixing gas. The tank body 1 can be any shape. The tank body 1 can be made of materials with good pressure resistance such as stainless steel, titanium alloy or aluminum alloy, and is Copper, aluminum and tungsten and other low hydrogen diffusivity metal plating layers are covered on the top to reduce the hydrogen embrittlement reaction of the gas in the tank body 1 during the mixing process, so as to avoid damage and rupture of the tank body 1, so that the The tank body 1 has better structural strength and durability. In this embodiment, the tank body 1 is described by taking a cylinder as an example. The tank body 1 has an accommodating space E inside. The accommodating space E is used for accumulating gas and making the gas evenly mixed. The tank body 1 has a first end 1a and a second end 1b axially opposite to each other, a hydrogen inlet 11 and an air inlet 12 are formed on the side wall of the tank body 1 and adjacent to the first end 1a, the hydrogen inlet 11 And the air inlet 12 can introduce hydrogen and air into the accommodating space E, the hydrogen inlet 11 and the air inlet 12 can be any shape, preferably, the hydrogen inlet 11 and the air inlet 12 are circular, The hydrogen inlet 11 has a first section R1, the air inlet 12 has a second section R2, and the area of the first section R1 is smaller than the area of the second section R2, so that the introduction speed of hydrogen and air is different. etc., in order to increase the uniformity after gas mixing, preferably, the area of the second section R2 is four times the area of the first section R1.

The second end 1b of the tank body 1 has an air outlet 13, so that the gas mixed evenly in the accommodating space E can be discharged from the air outlet 13, and a connecting part 14 is located at the air outlet 13 to facilitate the worker to The tank body 1 is connected to other workpieces. The connecting portion 14 can be integrally formed with the tank body 1, or the connecting portion 14 can be combined with the tank body 1. It is not limited in the present invention, and the principle of being able to connect firmly is enough.

Please refer to Figures 2 and 3, the groove body 1 has an axial centerline X, a radial projection reference plane S1 is orthogonal to the axial centerline X, and the inner circumferential surface of the groove body 1 is in the The radial projection reference plane S1 is circular. The four guide vanes 2 are respectively connected to the groove body 1 by an outer arc edge 21 . On the inner circumferential surface, the four guide vanes 2 are respectively spirally extended towards the direction of the air outlet 13 and are not connected to each other, so that the four guide vanes 2 are located at different positions on the same helical path (such as the first 4), and the four guide vanes 2 are preferably arranged at equal distances in the axial direction. For the convenience of description, the four guide fins 2 arranged along the axial centerline X may be the first guide fin 2a and the second guide fin from the closest to the first end 1a to the second end 1b in sequence. Sheet 2b, third guide sheet 2c and fourth guide sheet 2d, on the radial projection reference plane S1, the first guide sheet 2a and the second guide sheet 2b are symmetrically arranged, and the third guide sheet 2b is symmetrically arranged. The flow sheet 2c is axially overlapped with the first guide sheet 2a, and the fourth guide sheet 2d is axially overlapped with the second guide sheet 2b, so that there is an axial gas flow space in the groove body 1 And for the gas to flow and mix, so as to increase the flow rate of the gas and increase the combustion temperature of the mixed gas, so that the gas or other fuels can be completely burned.

Please refer to Figures 2 and 3 again, the axial centerline X passes through an axial center plane S2, and any two adjacent guide vanes 2 have an axial height difference H on the axial center plane S2, Preferably, the axial height difference H between any two adjacent guide vanes 2 is the same, and the axial height difference H is between 15 and 35 cm, so as to increase the uniformity of mixing and increase the gas flow velocity. Each of the guide vanes 2 is used to stop the gas, and each of the guide vanes 2 can be of any shape; each of the guide vanes 2 has an upper surface 22 and a lower surface 23 opposite to each other, and the upper surface 22 faces the slot. At the second end 1b of the body 1 , the lower surface 23 faces the first end 1a of the tank body 1 . On the axial center plane S2, there is an included angle θ between the upper surface 22 of each guide vane 2 and the inner circumferential surface of the groove body 1, and the included angle θ is 45 degrees, so that each guide vane 2 has an included angle θ. 2 is inclined from the first end 1a to the second end 1b, so that the blocking effect on the gas can be improved, so as to increase the time that the gas stays in the accommodating space E and improve the mixing uniformity of the gas. In addition, the guide vane 2 of this embodiment may also have an inner arc edge 24 and two connecting edges 25. On the radial projection reference plane S1, the inner arc edge 24 and the outer arc edge 21 are concentric circles Two arcs with different radii in the middle, the two connecting sides 25 are respectively connected to the end points of the inner arc side 24 and the outer arc side 21, the angle between the two connecting sides 25 is preferably 90 degrees, so that the guide plate 2 on the radial projection reference plane S1 The upper part is roughly formed into a quarter ring shape, so that the gas can be uniformly mixed and spirally discharged along the guide plate 2 .

Referring to FIG. 5, when the gas mixing tank of the present invention is actually used, a pressurizing nozzle P can be connected to the hydrogen inlet 11, so that the hydrogen gas is introduced into the accommodating space E after being pressurized, so as to The injection speed of hydrogen gas is increased, and a blower D is connected to the air inlet 12 , and the outside air is introduced into the accommodating space E by the blower D.

Based on the above, when mixing gas in the gas mixing tank of the present invention, hydrogen gas and air can be introduced into the tank body 1 through the hydrogen inlet 11 and the air inlet 12 respectively, and then the hydrogen gas can be introduced into the tank body 1 through the several guide plates 2. After being evenly mixed with the air, it spirals forward in the direction of the air outlet 13 . Specifically, the hydrogen inlet 11 can increase the introduction speed of hydrogen by the pressurizing nozzle P, and generate a hydrogen gas flow F1, and the air supply element D can introduce air from the air inlet 12 to generate an air flow F1. Airflow F2, because the flow velocity of this hydrogen gas flow F1 is greater than the flow velocity of this air flow F2, make this hydrogen gas flow F1 and this air flow F2 can carry out preliminary mixing in this tank body 1 near the first end 1a first, to promote hydrogen and air mixing efficiency. Preferably, the flow rate of the hydrogen gas flow F1 is eight times the flow rate of the air flow F2.

Referring to Fig. 6, when the gas mixing tank of the present invention is used to supply gas fuel to a boiler 3, the tank 1 can be connected to the boiler 3 through a pipe body T, and the boiler 3 has a combustion One end of the pipe body T is connected to the connecting part 14 of the tank body 1, and the other end of the pipe body T is connected to the burner 31, so that the tank body 1, the pipe body T and the burner 31 are connected to each other. It communicates with each other to conduct the mixed gas to the burner 31 . Preferably, the inside of the burner 31 can also generate negative pressure, so that the gas in the tank body 1 moves toward the burner 31 to accelerate the flow speed of the gas.

It should be noted that, since hydrogen is a gas that is easy to obtain, inexpensive to manufacture and has a high combustion temperature, when used as a gas fuel, it can not only increase the combustion temperature, but also make the gas burn more efficiently. It is more complete, and the product after combustion will not cause environmental burden, so more hydrogen will be used for mixing when mixing gas fuel. In this embodiment, the mixed gas system generated in the gas mixing tank is the gas fuel used for the combustion of the boiler 3, preferably the ratio of hydrogen to air is 2:1, so that the boiler can be increased 3 combustion temperature in order to improve the combustion efficiency of gas fuel and reduce the damage to the environment by combustion products.

Please refer to Figures 7 and 8, which are the second embodiment of the gas mixing tank of the present invention. In this embodiment, the four guide vanes 2 follow a spiral path from the first end 1a to the The second ends 1b are arranged so that the first guide vane 2a, the second guide vane 2b, the third guide vane 2c and the fourth guide vane 2d are on the radial projection reference plane S1 (please refer to 2), a ring is formed together, and the gas is guided by the four guide vanes 2 and the axial height difference H, so that the gas in the tank body 1 flows along the four guide vanes 2 and mixing to form a spiral moving airflow and advance toward the air outlet 13 .

To sum up, the gas mixing tank of the present invention can evenly mix hydrogen and air through the four guide vanes, and send the mixed gas to the boiler for combustion support, which has the advantages of improving the combustion efficiency of gas fuel, Increase the combustion temperature in the boiler, make the gas fuel burn completely, and avoid the generation of waste that is harmful to the environment.

Although the present invention has been disclosed by the above-mentioned preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various changes and modifications relative to the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the patent application attached hereto.

1: tank body

1a: first end

1b: second end

11: Hydrogen inlet

12: Air inlet

13: Air outlet

14: Connection part

2: deflector

2a: The first deflector

2b: Second deflector

2c: The third deflector

2d: Fourth deflector

E: accommodating space

H: Axial height difference

R1: first section

R2: Second section

S1: Radial projection datum

X: Axial centerline

θ: included angle

Claims (10)

A gas mixing tank, comprising: a tank body with an accommodating space, the tank body having an axial centerline, a radial projection reference plane orthogonal to the axial centerline, the tank body having axially opposite A first end and a second end, a hydrogen inlet and an air inlet are adjacent to the first end, the second end has an air outlet, and the inner circumferential surface of the groove body has a shape on the radial projection reference plane. circular; and four guide fins, respectively connected to the inner circumferential surface of the tank body by an outer arc edge, the four guide fins are located on the same helical path at intervals, and each guide fin has opposite an upper surface and a lower surface of the There is an included angle between the upper surface of the sheet and the inner circumferential surface of the groove body, and the included angle is 45 degrees. The gas mixing tank of claim 1, wherein the hydrogen inlet has a first section, the air inlet has a second section, and the area of the first section is smaller than the area of the second section. The gas mixing tank of claim 2, wherein the area of the second section is four times the area of the first section. The gas mixing tank of claim 1, wherein a pressurizing nozzle is connected to the hydrogen inlet to generate a hydrogen gas flow, and an air supply member is connected to the air inlet to generate an air flow. The gas mixing tank of claim 4, wherein the flow rate of the hydrogen gas flow is greater than the flow rate of the air flow. The gas mixing tank of claim 5, wherein the flow rate of the hydrogen gas flow is eight times the flow rate of the air flow. The gas mixing tank of claim 1, wherein the axial height difference between any two adjacent guide vanes on the axial center plane is the same, and the axial height difference is between 15 and 35 cm. The gas mixing tank of claim 1, wherein the four guide fins are a first guide fin, a second guide fin, a third guide fin and a fourth guide fin in sequence from the first end to the second end For the flow sheet, on the radial projection reference plane, the first flow guide sheet and the second flow guide sheet are symmetrically arranged. The gas mixing tank of claim 8, wherein the third guide fin and the first guide fin axially overlap, and the fourth guide fin and the second guide fin axially overlap. The gas mixing tank of claim 8, wherein the first guide vane, the second guide vane, the third guide vane and the fourth guide vane form a ring together on the radial projection reference plane shape.

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