Oxygen-enriched combustion boiler and working method thereof

Abstract

The invention relates to an oxygen-enriched combustion boiler and a working method thereof.The oxygen-enriched combustion boiler comprises a boiler body, a fixed cover is installed at the top of the boiler body, a rotary cover is rotatably installed on the fixed cover, a water injection pipe is installed on the side wall of the boiler body, a blow-down valve is installed at the bottom of the boiler body, a C-shaped cover is installed on the top side of the fixed cover and connected with a steam pipe, and a steam pipe is installed on the steam pipe. A combustion cylinder is installed on the bottom side of the rotating cover, a combustor is installed on the top side of the combustion cylinder, a smoke bin is installed at the bottom of the combustion cylinder, an annular smoke hood is installed on the top side of the rotating cover and located on the outer side of the combustion cylinder, and a plurality of smoke tube nests are installed between the smoke bin and the annular smoke hood; the rotating teeth are driven to work through the motor, then the rotating cover is driven to rotate, rotation of the combustion cylinder, the smoke bin and the smoke tube nest is achieved, the combustion cylinder and the smoke tube nest can make full contact with water in the boiler body through rotation, even and comprehensive heating is achieved, water can be stirred in the boiler body, and the output efficiency of steam is improved.

Description

Technical Field

[0001] The invention relates to the technical field of steam boilers, and in particular to an oxygen-enriched combustion boiler and a working method thereof. Background Art

[0002] The hot water or steam generated in the boiler can directly provide the required thermal energy for industrial production and people's lives, or it can be converted into mechanical energy through a steam power device, or the mechanical energy can be converted into electrical energy through a generator. During combustion, the oxygen content at the air intake is increased to achieve full combustion, oxygen-rich combustion, and reduce resource loss.

[0003] When the existing boiler is heating, the combustion tube and flue gas tubes used for heat conduction are fixedly installed inside the boiler. Therefore, when heating, the heating efficiency of different areas is different, resulting in uneven heating. At the same time, a large amount of smoke and dust are easily attached to the fixed combustion tube and flue gas tubes, and a large amount of scale is easily deposited inside the boiler, affecting the heating and heat receiving efficiency. Summary of the invention

[0004] The problem solved by the present invention is to provide an oxygen-enriched combustion boiler and a working method thereof, which solves the technical problem that when the existing boiler is heated, the combustion tube and the flue gas tubes used for heat conduction are fixedly installed inside the boiler. Therefore, when heating, the heating efficiency of different areas is different, resulting in uneven heating. At the same time, a large amount of smoke dust is easily attached to the inside of the fixed combustion tube and the flue gas tube, and a large amount of scale is easily deposited inside the boiler, affecting the heating and heat receiving efficiency.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An oxygen-enriched combustion boiler comprises a boiler body, a fixed cover is installed on the top of the boiler body, a rotating cover is rotatably installed on the fixed cover, a water injection pipe is installed on the side wall of the boiler body, a drain valve is installed on the bottom of the boiler body, a C-shaped cover is installed on the top side of the fixed cover, and the C-shaped cover is connected to a steam pipe, a combustion tube is installed on the bottom side of the rotating cover, a burner is installed on the top side of the combustion tube, a smoke bin is installed on the bottom of the combustion tube, an annular smoke hood is installed on the top side of the rotating cover and located on the outside of the combustion tube, a number of smoke pipes are installed between the smoke bin and the annular smoke hood, a rotating rod is rotatably installed on the rotating cover, a telescopic shaft is telescopically installed in the rotating rod, a longitudinal scraper is mounted on the outside of the rotating rod, and the bottom end of the telescopic shaft is connected to one end of a transverse scraper.

[0007] Preferably, a first fuel pipe and a first oxygen-enriched air intake pipe are installed on the burner, the first fuel pipe is connected to the second fuel pipe via a rotary joint, and the first oxygen-enriched air intake pipe is connected to the second oxygen-enriched air intake pipe via a rotary joint.

[0008] Preferably, a first smoke exhaust pipe is installed on the annular smoke hood, and the first smoke exhaust pipe is connected to the second smoke exhaust pipe through a rotary joint.

[0009] Preferably, the fixed cover and the rotating cover are connected via a bearing, a sealing ring is provided between the fixed cover and the rotating cover, and external teeth are provided on the outer side of the rotating cover.

[0010] Preferably, a mounting plate is mounted on the fixed cover, a motor is mounted on the mounting plate, a rotating tooth is mounted on the output end of the motor, and the rotating tooth is meshed with the external tooth.

[0011] Preferably, a first nut is threadedly installed on the outer side of the top end of the rotating rod, and a second nut is threadedly installed on the outer side of the top end of the telescopic shaft.

[0012] Preferably, a fixing cylinder is installed on the bottom side of the cigarette bin, a telescopic rod is slidably installed in the fixing cylinder, and the bottom end of the telescopic rod is connected to the other end of the transverse scraper.

[0013] Preferably, the rotating cover, the second fuel pipe, the second oxygen-enriched air intake pipe, the second smoke exhaust pipe and the telescopic rod share a common center.

[0014] Preferably, the specific operation steps of the working method are as follows:

[0015] Step 1: Add water into the boiler body through the water injection pipe. At this time, the burner works in the combustion tube for combustion. Fuel is added through the fuel pipe. Oxygen-enriched air is added through the oxygen-enriched air intake pipe to heat the combustion tube, thereby heating the water inside the boiler body. The flue gas generated by the combustion enters the flue gas tube through the smoke bin. The water inside is heated for the second time through the flue gas tube and finally discharged through the annular smoke hood and exhaust pipe. At this time, the water boils and generates steam, which is discharged through the C-type hood and steam pipe.

[0016] Step 2: The motor on the mounting plate drives the rotating teeth to rotate, and cooperates with the meshing external teeth to realize the rotation of the rotating cover, driving the combustion tube and the flue gas array pipe to rotate around the center of the rotating cover. At this time, the first fuel pipe rotates around the second fuel pipe through the rotating joint, the first oxygen-enriched air intake pipe rotates around the second oxygen-enriched air intake pipe through the rotating joint, and the first smoke exhaust pipe rotates around the second smoke exhaust pipe through the rotating joint. At this time, the water in the boiler body is stirred and evenly heated;

[0017] Step 3: Loosen the first nut to facilitate the rotation of the rotating rod, which will drive the longitudinal scraper to rotate. Rotate the longitudinal scraper until it fits the inner wall of the boiler body. Loosen the second nut to facilitate the telescopic shaft to extend and retract in the rotating rod. At the same time, the telescopic rod extends and retracts in the fixed tube. Move the transverse scraper to contact the bottom wall inside the boiler body. Tighten the first nut and the second nut. When the rotating cover rotates, the longitudinal scraper scrapes off the scale attached to the inner wall of the boiler body, and the transverse scraper scrapes off the scale attached to the bottom wall of the inner wall of the boiler body. Open the drain valve regularly to drain the sewage.

[0018] The beneficial effects of the present invention are as follows: the motor drives the rotating gear to work, thereby driving the rotating cover to rotate, so as to realize the rotation of the combustion tube, the smoke chamber and the smoke tube array, which can not only fully contact the water in the boiler body through the rotation of the combustion tube and the smoke tube array to realize uniform and comprehensive heating, but also can stir the water in the boiler body to improve the steam output efficiency;

[0019] At the same time, with the rotation of the combustion tube and the flue gas tube and the circulation of water inside the boiler body, the scaling rate on the outer side of the combustion tube and the flue gas tube and the inner wall of the boiler body can be greatly reduced. In addition, during the combustion process, the rotation of the combustion tube and the flue gas tube can reduce the adhesion efficiency of smoke on the inner wall of the combustion tube and the flue gas tube, thereby reducing the number of boiler cleaning times.

[0020] By adjusting the first nut and the second nut, the rotation of the rotating rod and the extension and retraction of the telescopic shaft are achieved, thereby adjusting the angle of the longitudinal scraper and the height of the transverse scraper. When cleaning the boiler, the longitudinal scraper is rotated to fit the inner wall of the boiler body, and the transverse scraper is moved to contact the bottom wall inside the boiler body. Through the rotation of the rotating cover, the longitudinal scraper scrapes off the scale attached to the inner wall of the boiler body, and the transverse scraper scrapes off the scale attached to the inner wall and bottom wall of the boiler body, thereby cleaning the scale of the boiler body, separating the transverse scraper and the longitudinal scraper from the inner wall of the boiler body, and reducing the wear of the transverse scraper and the longitudinal scraper. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a cross-sectional view of the present invention;

[0023] Figure 3 This is a schematic diagram of the first internal structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the second internal structure of the present invention.

[0025] Legend:

[0026] 1. Boiler body; 2. Fixed cover; 3. Rotating cover; 4. Water injection pipe; 5. C-type cover; 6. Steam pipe; 7. Drain valve; 8. Combustion tube; 9. Smoke chamber; 10. Smoke tube; 11. Burner; 12. Annular smoke hood; 13. First fuel pipe; 14. First oxygen-enriched air inlet pipe; 15. First smoke exhaust pipe; 16. Rotating joint; 17. Second fuel pipe; 18. Second oxygen-enriched air inlet pipe; 19. Second smoke exhaust pipe; 20. External teeth; 21. Mounting plate; 22. Motor; 23. Rotating teeth; 24. Rotating rod; 25. Telescopic shaft; 26. First nut; 27. Second nut; 28. Longitudinal scraper; 29. ​​Horizontal scraper; 30. Fixed tube; 31. Telescopic rod. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Specific examples are given below.

[0029] See also Figure 1 to Figure 4 A boiler with oxygen-enriched combustion comprises a boiler body 1, a fixed cover 2 is installed on the top of the boiler body 1, a rotary cover 3 is rotatably installed on the fixed cover 2, a water injection pipe 4 is installed on the side wall of the boiler body 1, a drain valve 7 is installed at the bottom of the boiler body 1, a C-type cover 5 is installed on the top side of the fixed cover 2, and the C-type cover 5 is connected to a steam pipe 6, a combustion tube 8 is installed on the bottom side of the rotary cover 3, a burner 11 is installed on the top side of the combustion tube 8, a smoke bin 9 is installed at the bottom of the combustion tube 8, an annular smoke hood 12 is installed on the top side of the rotary cover 3 and located outside the combustion tube 8, and a plurality of smoke tube arrays 10 are installed between the smoke bin 9 and the annular smoke hood 12.

[0030] A rotating rod 24 is rotatably mounted on the rotating cover 3 , a telescopic shaft 25 is telescopically mounted inside the rotating rod 24 , a longitudinal scraper 28 is sleeved on the outer side of the rotating rod 24 , and the bottom end of the telescopic shaft 25 is connected to one end of a transverse scraper 29 .

[0031] The burner 11 is provided with a first fuel pipe 13 and a first oxygen-enriched air intake pipe 14, the first fuel pipe 13 is connected to the second fuel pipe 17 through a rotary joint 16, the first oxygen-enriched air intake pipe 14 is connected to the second oxygen-enriched air intake pipe 18 through a rotary joint 16, the annular smoke hood 12 is provided with a first smoke exhaust pipe 15, the first smoke exhaust pipe 15 is connected to the second smoke exhaust pipe 19 through a rotary joint 16, the combustion tube 8 and the smoke array pipe 10 rotate around the center of the rotary cover 3, at this time, the first fuel pipe 13 rotates around the second fuel pipe 17 through the rotary joint 16, the first oxygen-enriched air intake pipe 14 rotates around the second oxygen-enriched air intake pipe 18 through the rotary joint 16, the first smoke exhaust pipe 15 rotates around the second smoke exhaust pipe 19 through the rotary joint 16, the fixed cover 2 and the rotary cover 3 are connected through a bearing, a sealing ring is provided between the fixed cover 2 and the rotary cover 3, an outer side of the rotary cover 3 is provided with an external tooth 20, and a mounting plate 2 is provided on the fixed cover 2 1. A motor 22 is installed on the mounting plate 21. A rotating tooth 23 is installed at the output end of the motor 22, and the rotating tooth 23 is meshed with the external tooth 20. The rotating tooth 23 is driven by the motor 22 to work, and then the rotating cover 3 is driven to rotate, so as to realize the rotation of the combustion tube 8, the smoke chamber 9 and the flue gas array tube 10. The rotation of the combustion tube 8 and the flue gas array tube 10 can fully contact with the water in the boiler body 1 to realize uniform and comprehensive heating, and the water can be stirred in the boiler body 1 to improve the steam output efficiency. At the same time, with the rotation of the combustion tube 8 and the flue gas array tube 10 and the circulation of water inside the boiler body 1, the scaling speed of the outer side of the combustion tube 8 and the flue gas array tube 10 and the inner wall of the boiler body 1 can be greatly reduced. In addition, during the combustion process, the combustion tube 8 and the flue gas array tube 10 can be rotated and moved to reduce the adhesion efficiency of smoke on the inner wall of the combustion tube 8 and the flue gas array tube 10, thereby reducing the number of boiler cleaning times.

[0032] A first nut 26 is threadedly installed on the outer side of the top of the rotating rod 24, and a second nut 27 is threadedly installed on the outer side of the top of the telescopic shaft 25. A fixed cylinder 30 is installed on the bottom side of the smoke chamber 9, and a telescopic rod 31 is slidably installed in the fixed cylinder 30. The bottom end of the telescopic rod 31 is connected to the other end of the transverse scraper 29. By adjusting the first nut 26 and the second nut 27, the rotation of the rotating rod 24 and the extension and retraction of the telescopic shaft 25 are achieved, and then the angle of the longitudinal scraper 28 and the height of the transverse scraper 29 are adjusted. When cleaning the boiler, the longitudinal scraper 28 rotates to fit the inner wall of the boiler body 1, and the transverse scraper 29 moves to contact the bottom wall inside the boiler body 1. Through the rotation of the rotating cover 3, the longitudinal scraper 28 scrapes off the scale attached to the inner wall of the boiler body 1, and the transverse scraper 29 scrapes off the scale attached to the inner wall and bottom wall of the boiler body 1, so as to clean the scale of the boiler body 1, separate the transverse scraper 29 and the longitudinal scraper 28 from the inner wall of the boiler body 1, and reduce the wear of the transverse scraper 29 and the longitudinal scraper 28.

[0033] The rotating cover 3, the second fuel pipe 17, the second oxygen-enriched air intake pipe 18, the second smoke exhaust pipe 19 and the telescopic rod 31 share a common center, and when rotating, they all rotate around the center of the rotating cover 3.

[0034] The specific steps of this working method are as follows:

[0035] Step 1: water is added into the boiler body 1 through the water injection pipe 4. At this time, the burner 11 works in the combustion tube 8 for combustion. Fuel is added through the fuel pipe. Oxygen-enriched air is added through the oxygen-enriched air intake pipe to heat the combustion tube 8, thereby heating the water inside the boiler body 1. The smoke generated by the combustion passes through the smoke bin 9 and enters the smoke tube 10. The water inside is heated for a second time through the smoke tube 10 and finally discharged through the annular smoke hood 12 and the smoke exhaust pipe. At this time, the water boils and generates steam that is discharged through the C-type hood 5 and the steam pipe 6.

[0036] Step 2: The motor 22 on the mounting plate 21 drives the rotating teeth 23 to rotate, and cooperates with the meshing external teeth 20 to realize the rotation of the rotating cover 3, driving the combustion tube 8 and the flue gas array pipe 10 to rotate around the center of the rotating cover 3. At this time, the first fuel pipe 13 rotates around the second fuel pipe 17 through the rotating joint 16, the first oxygen-enriched air intake pipe 14 rotates around the second oxygen-enriched air intake pipe 18 through the rotating joint 16, and the first smoke exhaust pipe 15 rotates around the second smoke exhaust pipe 19 through the rotating joint 16. At this time, the water in the boiler body 1 is stirred and evenly heated;

[0037] Step 3: Loosen the first nut 26 to facilitate the rotation of the rotating rod 24, which will drive the longitudinal scraper 28 to rotate. Rotate the longitudinal scraper 28 until it fits the inner wall of the boiler body 1, loosen the second nut 27 to facilitate the telescopic shaft 25 to extend and retract in the rotating rod 24, and at the same time, the telescopic rod 31 extends and retracts in the fixed tube 30, move the transverse scraper 29 to contact the bottom wall inside the boiler body 1, tighten the first nut 26 and the second nut 27, and when the rotating cover 3 rotates, the longitudinal scraper 28 scrapes off the scale attached to the inner wall of the boiler body 1, and the transverse scraper 29 scrapes off the scale attached to the inner wall and bottom wall of the boiler body 1, and regularly open the drain valve 7 to discharge the sewage.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An oxygen-enriched combustion boiler, characterized in that: The invention comprises a boiler body (1), a fixed cover (2) is installed on the top of the boiler body (1), a rotary cover (3) is rotatably installed on the fixed cover (2), a water injection pipe (4) is installed on the side wall of the boiler body (1), a sewage valve (7) is installed on the bottom of the boiler body (1), a C-shaped cover (5) is installed on the top side of the fixed cover (2), and the C-shaped cover (5) is connected to the steam pipe (6), a combustion tube (8) is installed on the bottom side of the rotary cover (3), a burner (11) is installed on the top side of the combustion tube (8), and the combustion tube (8) is installed on the bottom side of the rotary cover (3). A smoke bin (9) is installed at the bottom of the combustion cylinder (8), an annular smoke hood (12) is installed on the top side of the rotating cover (3) and located outside the combustion cylinder (8), a plurality of smoke tubes (10) are installed between the smoke bin (9) and the annular smoke hood (12), a rotating rod (24) is rotatably installed on the rotating cover (3), a telescopic shaft (25) is telescopically installed inside the rotating rod (24), a longitudinal scraper (28) is sleeved on the outer side of the rotating rod (24), and the bottom end of the telescopic shaft (25) is connected to one end of a transverse scraper (29).

2. The oxygen-enriched combustion boiler according to claim 1, characterized in that: The burner (11) is provided with a first fuel pipe (13) and a first oxygen-enriched air intake pipe (14); the first fuel pipe (13) is connected to a second fuel pipe (17) via a rotary joint (16); and the first oxygen-enriched air intake pipe (14) is connected to a second oxygen-enriched air intake pipe (18) via a rotary joint (16).

3. The oxygen-enriched combustion boiler according to claim 2, characterized in that: A first smoke exhaust pipe (15) is installed on the annular smoke hood (12), and the first smoke exhaust pipe (15) is connected to a second smoke exhaust pipe (19) via a rotary joint (16).

4. The oxygen-enriched combustion boiler according to claim 3, characterized in that: The fixed cover (2) and the rotating cover (3) are connected via a bearing, a sealing ring is provided between the fixed cover (2) and the rotating cover (3), and external teeth (20) are provided on the outer side of the rotating cover (3).

5. The oxygen-enriched combustion boiler according to claim 4, characterized in that: A mounting plate (21) is mounted on the fixed cover (2), a motor (22) is mounted on the mounting plate (21), a rotating tooth (23) is mounted on the output end of the motor (22), and the rotating tooth (23) is meshed with the external tooth (20).

6. The oxygen-enriched combustion boiler according to claim 5, characterized in that: A first nut (26) is threadedly mounted on the outer side of the top end of the rotating rod (24), and a second nut (27) is threadedly mounted on the outer side of the top end of the telescopic shaft (25).

7. The oxygen-enriched combustion boiler according to claim 6, characterized in that: A fixed cylinder (30) is installed on the bottom side of the cigarette bin (9), a telescopic rod (31) is slidably installed in the fixed cylinder (30), and the bottom end of the telescopic rod (31) is connected to the other end of the transverse scraper (29).

8. The oxygen-enriched combustion boiler according to claim 7, characterized in that: The rotating cover (3), the second fuel pipe (17), the second oxygen-enriched air intake pipe (18), the second smoke exhaust pipe (19) and the telescopic rod (31) are co-centered.

9. The operating method of an oxygen-enriched combustion boiler according to claim 8, characterized in that: The specific steps of this working method are as follows: Step 1: water is added into the boiler body (1) through the water injection pipe (4), and then the water is burned in the combustion tube (8) through the burner (11), fuel is added through the fuel pipe, and oxygen-enriched air is added through the oxygen-enriched air intake pipe to heat the combustion tube (8), thereby heating the water inside the boiler body (1) once, and the smoke generated by the combustion enters the smoke tube (10) through the smoke chamber (9), and the water inside is heated twice through the smoke tube (10), and finally discharged through the annular smoke hood (12) and the smoke exhaust pipe, and the water boils and generates steam, which is discharged through the C-shaped hood (5) and the steam pipe (6); Step 2: The motor (22) on the mounting plate (21) drives the rotating teeth (23) to rotate, and cooperates with the meshing external teeth (20) to realize the rotation of the rotating cover (3), and drives the combustion tube (8) and the flue gas array pipe (10) to rotate around the center of the rotating cover (3). At this time, the first fuel pipe (13) rotates around the second fuel pipe (17) through the rotating joint (16), the first oxygen-enriched air intake pipe (14) rotates around the second oxygen-enriched air intake pipe (18) through the rotating joint (16), and the first smoke exhaust pipe (15) rotates around the second smoke exhaust pipe (19) through the rotating joint (16). At this time, the water in the boiler body (1) is stirred and evenly heated; Step 3: Loosen the first nut (26) to facilitate the rotation of the rotating rod (24), and then drive the longitudinal scraper (28) to rotate. The longitudinal scraper (28) is rotated to fit the inner wall of the boiler body (1). Loosen the second nut (27) to facilitate the telescopic shaft (25) to extend and retract in the rotating rod (24). At the same time, the telescopic rod (31) is extended and retracted in the fixed cylinder (30). Move the transverse scraper (29) to contact the bottom wall inside the boiler body (1). Tighten the first nut (26) and the second nut (27). When the rotating cover (3) rotates, the longitudinal scraper (28) scrapes off the scale attached to the inner wall of the boiler body (1), and the transverse scraper (29) scrapes off the scale attached to the inner wall and bottom wall of the boiler body (1). Open the sewage valve (7) regularly to discharge sewage.

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