Combustible gas integrated mixed combustion device

Abstract

The utility model discloses a combustible gas integrated mixed combustion device which comprises an air conveying pipe, a brown gas conveying pipe and a natural gas conveying pipe which are sequentially and coaxially sleeved from inside to outside, and the output end of the air conveying pipe and the output end of the brown gas conveying pipe are connected with a combustion end cover. An air overflowing hole position and a brown gas overflowing hole position are formed in the combustion end cover, and the periphery of the combustion end cover is in clearance fit with the inner wall of the natural gas conveying pipe to form a natural gas overflowing groove position. The combustible gas integrated mixed combustion device has the advantages of being simple in structure, high in integration level and good in compatibility, the combustion speed can be increased, and the combustion heat value can be increased.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel combustion equipment, in particular to an integrated combustible gas mixing combustion device. Background Art

[0002] Natural gas is a multi-component mixed gaseous fuel, which is increasingly used as a clean energy source. However, natural gas has the disadvantages of narrow ignition range, slow propagation speed, and low calorific value generated by combustion. It cannot meet the production needs of high heat and cannot achieve full combustion of natural gas, resulting in waste of resources. At the same time, it will cause serious environmental pollution after discharge. At this time, a certain proportion of hydrogen can be added to increase the calorific value. The mixed gas of natural gas and hydrogen will combine the advantages and characteristics of both, which can increase the combustion speed, reduce cycle changes, and increase the calorific value of gas. However, the existing mixing device used for mixing natural gas and hydrogen is not only complex in structure and cumbersome in operation, but also cannot make the natural gas and hydrogen mix evenly. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide a combustible gas integrated mixing combustion device with a simple structure, high integration, good compatibility, and the ability to increase the combustion speed and the combustion calorific value.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A combustible gas integrated mixed combustion device comprises an air delivery pipe, a Brown's gas delivery pipe and a natural gas delivery pipe which are coaxially sleeved in sequence from the inside to the outside, the output ends of the air delivery pipe and the Brown's gas delivery pipe are connected to a combustion end cover, the combustion end cover is provided with air flow holes for connecting the inner cavity of the air delivery pipe with the outside world and Brown's gas flow holes for connecting the inner cavity of the Brown's gas delivery pipe with the outside world, the outer periphery of the combustion end cover is matched with the inner wall gap of the natural gas delivery pipe to form a natural gas flow groove for connecting the inner cavity of the natural gas delivery pipe with the outside world.

[0006] As a further improvement of the above technical solution:

[0007] The input end of the natural gas transmission pipe is connected to a natural gas intake pipe extending outward;

[0008] The input end portion of the Brown's gas delivery pipe is arranged to pass through the natural gas delivery pipe, and the input end of the Brown's gas delivery pipe is connected to a Brown's gas inlet pipe extending outward;

[0009] The input end portion of the air delivery pipe passes through the Brownian air delivery pipe, and the input end of the air delivery pipe is connected to an air intake pipe extending outward.

[0010] An adjusting valve stem is movably arranged in the air delivery pipe, the adjusting valve stem has a valve head at one end close to the combustion end cover, and has a rod tail at one end away from the combustion end cover. The valve head and the inner wall of the air flow hole are both tapered, and the valve head and the air flow hole are gap-matched.

[0011] A sealing end block is provided on one end of the air delivery pipe away from the combustion end cover, the rod tail is arranged through the sealing end block, the rod tail is provided with an external thread, the sealing end block is provided with an internal thread, and the rod tail is threadedly connected to the sealing end block.

[0012] A hand wheel is arranged at the end of the rod tail.

[0013] An annular convex portion is formed on the inner side of the combustion end cover, and the annular convex portion is embedded in the gap between the outer wall of the air delivery pipe and the inner wall of the Brownian gas delivery pipe, and the Brownian gas flow hole is arranged on the annular convex portion.

[0014] The Brown gas flow holes are provided with diameter reduction sections and straight pipe sections in sequence along the conveying direction.

[0015] The outer circumference of the combustion end cover is provided with a diameter expansion portion and a cylindrical portion in sequence along the conveying direction.

[0016] A first sealing end cap is provided on one end of the Brown gas delivery pipe away from the combustion end cap, and a second sealing end cap is provided on one end of the natural gas delivery pipe away from the combustion end cap.

[0017] Compared with the prior art, the advantages of the utility model are:

[0018] The utility model discloses an integrated combustible gas mixing and combustion device, comprising an air delivery pipe, a Brownian gas delivery pipe and a natural gas delivery pipe which are coaxially sleeved in sequence from the inside to the outside, and an output end thereof is provided with a combustion end cover, air is output through air flow holes, Brownian gas is output through Brownian gas flow holes, and natural gas is output through natural gas flow grooves, so that air, Brownian gas and natural gas are evenly mixed and burned on the outside of the combustion end cover, and the utility model has the advantages of simple structure, high integration and good compatibility, and after adding Brownian gas, the combustion speed can be greatly improved, the combustion calorific value can be increased, and about 20% of natural gas can be saved, thereby reducing the emission of carbon oxides and nitrogen oxides, achieving a more environmentally friendly effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a combustible gas integrated mixed combustion device.

[0020] Figure 2 It is a half-section schematic diagram of the combustible gas integrated mixing combustion device in a disassembled state.

[0021] Figure 3 for Figure 2 Enlarged view of detail A.

[0022] Legend:

[0023] 1. Air delivery pipe; 101. Air intake pipe; 2. Brown gas delivery pipe; 201. Brown gas intake pipe; 3. Natural gas delivery pipe; 301. Natural gas intake pipe; 4. Combustion end cover; 401. Air flow hole; 402. Brown gas flow hole; 4021. Diameter reduction section; 4022. Straight pipe section; 403. Natural gas flow slot; 404. Annular convex part; 405. Diameter expansion part; 406. Cylindrical part; 5. Regulating valve stem; 501. Valve head; 502. Stem tail; 503. Hand wheel; 6. Sealing end block; 7. First sealing end cover; 8. Second sealing end cover. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] like Figures 1 to 3 As shown, the combustible gas integrated mixed combustion device of this embodiment includes an air delivery pipe 1, a Brown's gas delivery pipe 2 and a natural gas delivery pipe 3 which are coaxially sleeved in sequence from the inside to the outside. The output ends of the air delivery pipe 1 and the Brown's gas delivery pipe 2 are connected to a combustion end cover 4. The combustion end cover 4 is provided with an air flow hole 401 for connecting the inner cavity of the air delivery pipe 1 with the outside world and a Brown's gas flow hole 402 for connecting the inner cavity of the Brown's gas delivery pipe 2 with the outside world. The outer periphery of the combustion end cover 4 is matched with the inner wall gap of the natural gas delivery pipe 3 to form a natural gas flow groove 403 for connecting the inner cavity of the natural gas delivery pipe 3 with the outside world. The combustible gas integrated mixed combustion device includes an air delivery pipe 1, a Brownian gas delivery pipe 2, and a natural gas delivery pipe 3 which are coaxially sleeved from the inside to the outside, and a combustion end cover 4 is provided at the output end thereof. Air is output through an air flow hole 401, Brownian gas is output through a Brownian gas flow hole 402, and natural gas is output through a natural gas flow slot 403, so that air, Brownian gas, and natural gas are evenly mixed and burned on the outside of the combustion end cover 4, and have the advantages of simple structure, high integration, and good compatibility. After adding Brownian gas, the combustion speed can be greatly improved, the combustion calorific value can be increased, and about 20% of natural gas can be saved, thereby reducing the emission of carbon oxides and nitrogen oxides, and achieving a more environmentally friendly effect. Specifically, the output end of the combustible gas integrated mixed combustion device of the utility model can be sleeved with a nozzle section, so that the air, Brownian gas, and natural gas output on the combustion end cover 4 can be mixed more evenly in the nozzle section, and sprayed out from the output end of the nozzle section for combustion.

[0026] It should be noted that Brown gas is a special mixed gas, which is mainly produced by electrolysis of alkaline aqueous solution. It is a mixture of hydrogen and oxygen in a ratio of two to one. It can be used in the fields of automobile combustion and fuel saving, boiler combustion, and improving combustion efficiency in natural gas boilers. It has the advantages of high combustion efficiency, good catalytic properties, temperature variable properties, etc. It belongs to the existing technology and will not be elaborated here.

[0027] Preferably, the input end of the natural gas delivery pipe 3 is connected to a natural gas intake pipe 301 extending outward; the input end portion of the Brown's gas delivery pipe 2 is arranged to pass through the natural gas delivery pipe 3, and the input end of the Brown's gas delivery pipe 2 is connected to a Brown's gas intake pipe 201 extending outward; the input end portion of the air delivery pipe 1 is arranged to pass through the Brown's gas delivery pipe 2, and the input end of the air delivery pipe 1 is connected to an air intake pipe 101 extending outward. In this embodiment, the input end of the natural gas intake pipe 301 is connected to a natural gas storage tank, a regulating valve and other pipeline control components, which can independently adjust the fluid condition entering the natural gas delivery pipe 3; the input end of the Brownian gas intake pipe 201 is connected to a Brownian gas storage tank, a regulating valve and other pipeline control components, which can independently adjust the fluid condition entering the Brownian gas delivery pipe 2; the input end of the air intake pipe 101 is connected to an air storage tank, a regulating valve and other pipeline control components, which can independently adjust the fluid condition entering the air delivery pipe 1, thereby being able to meet the needs of mixing different gas intake ratios, and having the advantages of high flexibility of use and a wide range of applications.

[0028] Preferably, a regulating valve stem 5 is movably arranged in the air delivery pipe 1, and the end of the regulating valve stem 5 close to the combustion end cover 4 has a valve head 501, and the end of the regulating valve stem 5 away from the combustion end cover 4 has a rod tail 502, the valve head 501 and the inner wall of the air flow hole 401 are both tapered, and the valve head 501 and the air flow hole 401 are gap-matched. In this embodiment, the valve head 501 and the inner wall of the air flow hole 401 are both set in a tapered shape. When the valve head 501 and the air flow hole 401 are close to each other, the gap between the outer wall of the valve head 501 and the inner wall of the air flow hole 401 is reduced, which is equivalent to a reduction in the pipe diameter, and the gas flow rate at the output end of the air flow hole 401 is increased; when the valve head 501 and the air flow hole 401 are away from each other, the gap between the outer wall of the valve head 501 and the inner wall of the air flow hole 401 is increased, which is equivalent to an increase in the pipe diameter, and the gas flow rate at the output end of the air flow hole 401 is reduced, thereby adjusting the output working condition of the air delivery pipe 1 by adjusting the valve stem 5.

[0029] Preferably, a sealing end block 6 is provided at the end of the air delivery pipe 1 away from the combustion end cover 4, and the rod tail 502 is arranged through the sealing end block 6. The rod tail 502 is provided with an external thread, and the sealing end block 6 is provided with an internal thread. The rod tail 502 is threadedly connected to the sealing end block 6, which has the advantages of simple structure, convenient disassembly and assembly, and high reliability.

[0030] Preferably, a hand wheel 503 is provided at the end of the rod tail 502, so that the operator can rotate the regulating valve stem 5 through the hand wheel 503 to change the front and rear position of the regulating valve stem 5, thereby adjusting the air flow rate and controlling the combustion conditions.

[0031] Preferably, an annular convex portion 404 is formed on the inner side of the combustion end cover 4, and the annular convex portion 404 is embedded in the gap between the outer wall of the air delivery pipe 1 and the inner wall of the Brown's gas delivery pipe 2, and the Brown's gas flow hole 402 is arranged on the annular convex portion 404. In this embodiment, an annular gap is formed between the outer wall of the air delivery pipe 1 and the inner wall of the Brown's gas delivery pipe 2, and an annular convex portion 404 is formed on the inner side of the combustion end cover 4, and the annular convex portion 404 is embedded in the annular gap to realize that the combustion end cover 4 is connected to the output ends of the air delivery pipe 1 and the Brown's gas delivery pipe 2, and the Brown's gas flow hole 402 is arranged on the annular convex portion 404 to realize that the inner cavity of the Brown's gas delivery pipe 2 is connected to the outside.

[0032] Preferably, the Brownian gas flow hole 402 is provided with a diameter reduction section 4021 and a straight pipe section 4022 in sequence along the conveying direction. In this embodiment, the Brownian gas flow hole 402 is provided with a diameter reduction section 4021, and when the Brownian gas in the Brownian gas conveying pipe 2 flows through the diameter reduction section 4021, the flow velocity increases, the static pressure decreases, and the dynamic pressure increases, so the pressure of the pipeline decreases and the flow rate increases, that is, the gas flow velocity at the output end of the Brownian gas flow hole 402 increases.

[0033] Preferably, the outer circumference of the combustion end cover 4 is provided with a diameter expansion portion 405 and a cylindrical portion 406 in sequence along the conveying direction. In this embodiment, the outer circumference of the combustion end cover 4 is provided with a diameter expansion portion 405, which is equivalent to the narrowing of the pipe diameter in the natural gas transmission pipe 3. The outer wall of the cylindrical portion 406 and the inner wall of the natural gas transmission pipe 3 are gap-matched to form a natural gas flow slot 403. When the natural gas in the natural gas transmission pipe 3 flows through the diameter expansion portion 405, the flow rate increases, the static pressure decreases, and the dynamic pressure increases. Therefore, the pressure of the pipeline decreases and the flow rate increases, that is, the gas flow rate at the output end of the natural gas flow slot 403 increases.

[0034] Preferably, a first sealing end cap 7 is provided on the end of the Brown gas delivery pipe 2 away from the combustion end cap 4, and a second sealing end cap 8 is provided on the end of the natural gas delivery pipe 3 away from the combustion end cap 4, which effectively ensures the airtightness of the Brown gas delivery pipe 2 and the natural gas delivery pipe 3 and improves safety.

[0035] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. For those skilled in the art, improvements and changes obtained without departing from the technical concept of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A combustible gas integrated mixing combustion device, characterized in that: The invention comprises an air delivery pipe (1), a Brown's gas delivery pipe (2) and a natural gas delivery pipe (3) which are coaxially sleeved in sequence from the inside to the outside, wherein the output ends of the air delivery pipe (1) and the Brown's gas delivery pipe (2) are connected to a combustion end cover (4), and the combustion end cover (4) is provided with an air flow hole (401) and a Brown's gas flow hole (402), and the outer periphery of the combustion end cover (4) is gap-matched with the inner wall of the natural gas delivery pipe (3) to form a natural gas flow slot (403).

2. The combustible gas integrated mixing combustion device according to claim 1, characterized in that: The input end of the natural gas transmission pipe (3) is connected to a natural gas intake pipe (301); The input end portion of the Brown's gas delivery pipe (2) is arranged to pass through the natural gas delivery pipe (3), and the input end of the Brown's gas delivery pipe (2) is connected to a Brown's gas inlet pipe (201); The input end portion of the air delivery pipe (1) is arranged to pass through the Brownian air delivery pipe (2), and the input end of the air delivery pipe (1) is connected to an air intake pipe (101).

3. The combustible gas integrated mixing combustion device according to claim 2, characterized in that: An adjusting valve stem (5) is movably arranged in the air delivery pipe (1); an end of the adjusting valve stem (5) close to the combustion end cover (4) has a valve head (501); an end of the adjusting valve stem (5) away from the combustion end cover (4) has a stem tail (502); the valve head (501) and the inner wall of the air flow hole (401) are both tapered; the valve head (501) and the air flow hole (401) are clearance-matched.

4. The combustible gas integrated mixed combustion device according to claim 3, characterized in that: A sealing end block (6) is provided at one end of the air delivery pipe (1) away from the combustion end cover (4), the rod tail (502) is arranged through the sealing end block (6), the rod tail (502) is provided with an external thread, the sealing end block (6) is provided with an internal thread, and the rod tail (502) is threadedly connected to the sealing end block (6).

5. The combustible gas integrated mixing combustion device according to claim 4, characterized in that: A hand wheel (503) is provided at the end of the rod tail (502).

6. The combustible gas integrated mixed combustion device according to claim 4, characterized in that: An annular convex portion (404) is formed on the inner side of the combustion end cover (4), the annular convex portion (404) is embedded in the gap between the outer wall of the air delivery pipe (1) and the inner wall of the Brownian gas delivery pipe (2), and the Brownian gas flow hole (402) is arranged on the annular convex portion (404).

7. The combustible gas integrated mixing combustion device according to claim 6, characterized in that: The Brownian gas flow hole (402) is provided with a diameter reduction section (4021) and a straight pipe section (4022) in sequence along the conveying direction.

8. The combustible gas integrated mixed combustion device according to claim 7, characterized in that: The outer circumference of the combustion end cover (4) is provided with a diameter expansion portion (405) and a cylindrical portion (406) in sequence along the conveying direction.

9. The combustible gas integrated mixed combustion device according to claim 4, characterized in that: A first sealing end cover (7) is provided on the end of the Brownian gas delivery pipe (2) away from the combustion end cover (4), and a second sealing end cover (8) is provided on the end of the natural gas delivery pipe (3) away from the combustion end cover (4).

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