Efficient condensation steam boiler

Abstract

The utility model discloses an efficient condensation steam boiler which is characterized in that a combustor outputs fuel, the fuel is combusted in a hearth and is re-combusted through a re-combustion cavity, flue gas is conveyed into a second flue gas cavity from a first flue gas pipe, and the flue gas in the second flue gas cavity is conveyed into the first flue gas cavity through the second flue gas pipe; water in the main body is heated through the hearth, the recombustion cavity, the first smoke pipe and the second smoke pipe, smoke is input through the output end of the first smoke cavity and discharged through multi-stage cooling of the first cooling mechanism, the second cooling mechanism and the third cooling mechanism, and cold air is conveyed to the first cooling mechanism through the air blower. Cold air is conveyed to an air inlet of the combustor through heat exchange of the first cooling mechanism, cooling water is conveyed into the third cooling mechanism through the second water pump, the cooling water subjected to heat exchange of the third cooling mechanism enters the second cooling mechanism, and the cooling water is conveyed into the water storage device after being subjected to secondary heat exchange of the second cooling mechanism. And hot water stored in the water storage device is conveyed into the main body through the first water pump.

Description

Technical Field

[0001] The utility model relates to the technical field of boilers, in particular to a high-efficiency condensing steam boiler. Background Art

[0002] A steam boiler is an industrial boiler that heats water to a certain temperature and produces high-temperature steam. Water is heated in the drum, turning it into steam, while fire generates heat in the furnace. Fuel burns in the furnace, producing high-temperature flue gas, which heats the water in the boiler.

[0003] However, the temperature of the flue gas discharged by the existing steam boiler is still very high. Directly discharging the flue gas is likely to cause heat waste. To address the above problem, a high-efficiency condensing steam boiler is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a high-efficiency condensing steam boiler to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A high-efficiency condensing steam boiler comprises a main body, a first cooling mechanism, a second cooling mechanism, a third cooling mechanism, a first water pump and a water storage tank, wherein a first smoke chamber and a second smoke chamber are fixedly installed at both ends of the main body, a furnace is provided in the main body, one end of the furnace passes through the main body and is fixedly connected to the second smoke chamber, a burner is fixedly installed at the input end of the furnace, a reburning chamber is fixedly installed at one end of the furnace in the main body, the reburning chamber is fixedly connected to a plurality of first smoke pipes, the other end of the first smoke pipe is fixedly connected to the second smoke chamber, a plurality of second smoke pipes are fixedly connected between the first smoke chamber and the second smoke chamber, the first cooling mechanism is fixedly installed at the smoke outlet at the top of the first smoke chamber, and the air inlet of the first cooling mechanism is fixedly connected to A blower is connected, the air outlet of the first cooling mechanism is connected to the air inlet of the burner, the input end of the second cooling mechanism is fixedly connected to the output end of the first cooling mechanism through a pipeline, the input end of the third cooling mechanism is fixedly connected to the output end of the second cooling mechanism, the water injection port of the third cooling mechanism is connected to the second water pump, the input end of the second water pump is connected to the water source, the water outlet end of the third cooling mechanism is connected to the water injection end of the second cooling mechanism through a pipeline, the water outlet end of the second cooling mechanism is connected to the input end of the water reservoir through a pipeline, the water reservoir is connected to the first water pump through a pipeline, the output end of the first water pump is connected to the water injection port of the main body through a pipeline, and an air outlet is provided on the top of the main body.

[0007] As a further solution of the present invention: a liquid level gauge is provided on the main body, and a thermometer and a pressure gauge are provided on the top of the main body.

[0008] As a further solution of the present invention: the afterburning chamber is fixedly installed with an inspection pipe, the inspection pipe runs through the first smoke chamber, and a cover plate is fixedly installed on the port of the inspection pipe outside the first smoke chamber by bolts.

[0009] As a further solution of the present invention: lifting ears are symmetrically fixedly installed on the top of the main body.

[0010] As a further solution of the present invention: the first cooling mechanism includes a first heat-insulating shell, in which first partitions are symmetrically fixedly installed, and a plurality of first heat exchange tubes are evenly fixedly installed between the first partitions, and both ends of the first heat exchange tubes pass through the corresponding first partitions, the air inlet of the first heat-insulating shell is connected to the blower, and the air outlet of the first heat-insulating shell is connected to the air inlet of the burner.

[0011] As a further solution of the present invention: the second cooling mechanism includes a second insulating shell, a hot water exchange pipe is provided in the second insulating shell, and both ends of the hot water exchange pipe are connected to the water injection end and the water outlet end of the second insulating shell.

[0012] As a further solution of the present invention: the third cooling mechanism includes a third insulating shell, and second partitions are symmetrically fixedly installed on the inner wall of the third insulating shell, and a number of second heat exchange tubes are evenly fixedly installed between the second partitions. Both ends of the second heat exchange tubes pass through the corresponding second partitions, the water inlet of the third insulating shell is connected to the second water pump, and the water outlet end of the third insulating shell is connected to the water injection end of the second insulating shell of the second cooling mechanism through a connecting pipe.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The burner of the utility model is output, the fuel is burned in the furnace, and after the afterburning of the afterburning chamber, the smoke is transported from the first smoke pipe to the second smoke chamber, and the smoke in the second smoke chamber is transported to the first smoke chamber through the second smoke pipe. The furnace, the afterburning chamber, the first smoke pipe and the second smoke pipe heat the water in the main body, increasing the heating area of ​​the water. The smoke is input through the output end of the first smoke chamber, and the smoke is discharged after multi-stage cooling through the first cooling mechanism, the second cooling mechanism and the third cooling mechanism. Air is blown into the first heat-insulating shell of the first cooling mechanism through the blower, and the input air exchanges heat with the high-temperature smoke in the first heat exchange tube. The air after heat exchange is transported to the air inlet of the burner, realizing The air is heated and the heated air is transported to the air inlet of the burner. The second water pump transports cooling water to the third insulating shell in the third cooling mechanism. The cooling water exchanges heat with the flue gas in the second heat exchange tube to achieve a third cooling of the flue gas. The cooling water after the initial heat exchange enters the hot water exchange pipe in the second cooling mechanism and is cooled again with the flue gas after the initial cooling input into the second insulating shell. The cooling water after two heat exchanges is transported to the water reservoir. The hot water stored in the water reservoir is transported to the cavity of the main body through the first water pump. The waste heat of the flue gas is recovered through multiple stages, which is beneficial to energy saving, has high efficiency in reducing the heat of the flue gas, and reduces heat discharge.

[0015] 2. The utility model is provided with lifting lugs to facilitate the lifting of the device.

[0016] 3. The utility model facilitates the inspection and maintenance of the furnace and the afterburning cavity by opening the cover installed at the inspection pipe opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of a high-efficiency condensing steam boiler.

[0018] Figure 2 This is a longitudinal cross-sectional view of a high-efficiency condensing steam boiler.

[0019] Figure 3 This is a transverse cross-sectional view of a high-efficiency condensing steam boiler.

[0020] Figure 4 The figure is a cross-sectional view of a first cooling mechanism in a high-efficiency condensing steam boiler.

[0021] Figure 5 The figure is a cross-sectional view of the second cooling mechanism in a high-efficiency condensing steam boiler.

[0022] Figure 6 The figure is a cross-sectional view of the third cooling mechanism in a high-efficiency condensing steam boiler.

[0023] In the figure: 1. Main body; 2. First smoke chamber; 3. Second smoke chamber; 4. Liquid level gauge; 5. Burner; 6. Inspection pipe; 7. Cover plate; 8. Lifting lug; 9. First cooling mechanism; 10. Blower; 11. First water pump; 12. Water reservoir; 13. Second cooling mechanism; 14. Third cooling mechanism; 15. Second water pump; 16. Furnace; 17. Afterburning chamber; 18. First smoke pipe; 19. Second smoke pipe; 20. First thermal insulation shell; 21. First partition; 22. First heat exchange tube; 23. Second thermal insulation shell; 24. Hot water exchange tube; 25. Third thermal insulation shell; 26. Second partition; 27. Second heat exchange tube. DETAILED DESCRIPTION

[0024] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0025] See also Figures 1 to 6 In an embodiment of the present invention, a high-efficiency condensing steam boiler includes a main body 1, a first cooling mechanism 9, a second cooling mechanism 13, a third cooling mechanism 14, a first water pump 11 and a water storage tank 12. The first smoke chamber 2 and the second smoke chamber 3 are fixedly installed at both ends of the main body 1. A furnace 16 is provided in the main body 1. One end of the furnace 16 passes through the main body 1 and is fixedly connected to the second smoke chamber 3. A burner 5 is fixedly installed at the input end of the furnace 16. A reburning chamber 17 is fixedly installed at one end of the furnace 16 in the main body 1. The reburning chamber 17 is fixedly connected to a plurality of first smoke pipes 18. The other end of the first smoke pipe 18 is fixedly connected to the second smoke chamber 3. A plurality of second smoke pipes 19 are fixedly connected between the first smoke chamber 2 and the second smoke chamber 3. The first cooling mechanism 9 is fixedly installed at the smoke outlet on the top of the first smoke chamber 2. The first cooling mechanism 9 is fixedly installed at the smoke outlet on the top of the first smoke chamber 2. The air inlet of the mechanism 9 is fixedly connected to the blower 10, the air outlet of the first cooling mechanism 9 is connected to the air inlet of the burner 5, the input end of the second cooling mechanism 13 is fixedly connected to the output end of the first cooling mechanism 9 through a pipeline, the input end of the third cooling mechanism 14 is fixedly connected to the output end of the second cooling mechanism 13, the water injection port of the third cooling mechanism 14 is connected to the second water pump 15, the input end of the second water pump 15 is connected to the water source, the water outlet end of the third cooling mechanism 14 is connected to the water injection end of the second cooling mechanism 13 through a pipeline, the water outlet end of the second cooling mechanism 13 is connected to the input end of the water reservoir 12 through a pipeline, the water reservoir 12 is connected to the first water pump 11 through a pipeline, the output end of the first water pump 11 is connected to the water injection port of the main body 1 through a pipeline, and an air outlet is provided at the top of the main body 1.

[0026] When in use, the burner 5 outputs, the fuel burns in the furnace 16, and after the afterburning of the afterburning chamber 17, the smoke is transported from the first smoke pipe 18 to the second smoke chamber 3, and the smoke in the second smoke chamber 3 is transported to the first smoke chamber 2 through the second smoke pipe 19. The furnace 16, the afterburning chamber 17, the first smoke pipe 18 and the second smoke pipe 19 heat the water in the main body 1, and the smoke is input through the output end of the first smoke chamber 2. The smoke is discharged after being cooled by the first cooling mechanism 9, the second cooling mechanism 13 and the third cooling mechanism 14, and then discharged by the blast. The machine 10 delivers cold air to the first cooling mechanism 9, and the cold air is delivered to the air inlet of the burner 5 after heat exchange in the first cooling mechanism 9. The second water pump 15 delivers cooling water to the third cooling mechanism 14. After heat exchange in the third cooling mechanism 14, the cooling water enters the second cooling mechanism 13. After the second heat exchange in the second cooling mechanism 13, the cooling water is delivered to the water reservoir 12. The hot water stored in the water reservoir 12 is delivered to the main body 1 through the first water pump 11, realizing the recovery of heat in the output flue gas, which is beneficial to energy saving.

[0027] The main body 1 is provided with a liquid level gauge 4 , and the top of the main body 1 is provided with a thermometer and a pressure gauge. The liquid level gauge 4 , the thermometer and the pressure gauge monitor the water in the main body 1 .

[0028] The afterburning chamber 17 is fixedly installed with an inspection pipe 6, which passes through the first smoke chamber 2, and the port of the inspection pipe 6 outside the first smoke chamber 2 is fixedly installed with a cover plate 7 by bolts. When not in use, the cover plate 7 installed at the port of the inspection pipe 6 is opened to facilitate inspection and maintenance of the furnace 16 and the afterburning chamber 17.

[0029] The top of the main body 1 is symmetrically fixed with lifting ears 8, which facilitate the lifting of the device.

[0030] The first cooling mechanism 9 includes a first insulating shell 20, in which first partitions 21 are symmetrically fixedly installed, and a number of first heat exchange tubes 22 are evenly fixedly installed between the first partitions 21. Both ends of the first heat exchange tubes 22 pass through the corresponding first partitions 21. The air inlet of the first insulating shell 20 is connected to the blower 10, and the air outlet of the first insulating shell 20 is connected to the air inlet of the burner 5. The blower 10 blows air into the first insulating shell 20 of the first cooling mechanism 9, and the input air exchanges heat with the high-temperature flue gas in the first heat exchange tube 22. The air after heat exchange is transported to the air inlet of the burner 5 to heat the air.

[0031] The second cooling mechanism 13 includes a second insulating shell 23, in which a hot water exchange pipe 24 is provided. Both ends of the hot water exchange pipe 24 are connected to the water injection end and the water outlet end of the second insulating shell 23. The cooling water after the first heat exchange is input into the hot water exchange pipe 24 in the second cooling mechanism 13, and is cooled again with the flue gas after the initial cooling input into the second insulating shell 23. The cooling water after two heat exchanges is transported to the water reservoir 12, and the hot water stored in the water reservoir 12 is transported to the cavity of the main body 1 through the first water pump 11.

[0032] The third cooling mechanism 14 includes a third insulating shell 25, and second partitions 26 are symmetrically fixedly installed on the inner wall of the third insulating shell 25. A number of second heat exchange tubes 27 are evenly fixedly installed between the second partitions 26. Both ends of the second heat exchange tubes 27 pass through the corresponding second partitions 26. The water inlet of the third insulating shell 25 is connected to the second water pump 15, and the water outlet end of the third insulating shell 25 is connected to the water injection end of the second insulating shell 23 of the second cooling mechanism 13 through a connecting pipe. The second water pump 15 transports cooling water from the water source to the third insulating shell 25 in the third cooling mechanism 14, and the cooling water exchanges heat with the flue gas in the second heat exchange tubes 27 to achieve a third cooling and cooling of the flue gas. The cooling water that has undergone the initial heat exchange enters the second cooling mechanism 13.

[0033] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-efficiency condensing steam boiler, comprising a main body (1), a first cooling mechanism (9), a second cooling mechanism (13), a third cooling mechanism (14), a first water pump (11) and a water storage tank (12), Features: The first smoke chamber (2) and the second smoke chamber (3) are fixedly installed at both ends of the main body (1), a furnace (16) is arranged in the main body (1), one end of the furnace (16) passes through the main body (1) and is fixedly connected to the second smoke chamber (3), a burner (5) is fixedly installed at the input end of the furnace (16), a re-ignition chamber (17) is fixedly installed at one end of the furnace (16) in the main body (1), the re-ignition chamber (17) is fixedly connected to a plurality of first smoke pipes (18), the other end of the first smoke pipe (18) is fixedly connected to the second smoke chamber (3), a plurality of second smoke pipes (19) are fixedly connected between the first smoke chamber (2) and the second smoke chamber (3), a first cooling mechanism (9) is fixedly installed at the smoke outlet at the top of the first smoke chamber (2), an air inlet of the first cooling mechanism (9) is fixedly connected to a blower (10), and the first cooling mechanism (9) is fixedly connected to the air inlet of the first cooling mechanism (9). The air outlet is connected to the air inlet of the burner (5); the input end of the second cooling mechanism (13) is fixedly connected to the output end of the first cooling mechanism (9) through a pipeline; the input end of the third cooling mechanism (14) is fixedly connected to the output end of the second cooling mechanism (13); the water injection port of the third cooling mechanism (14) is connected to the second water pump (15); the input end of the second water pump (15) is connected to a water source; the water outlet end of the third cooling mechanism (14) is connected to the water injection end of the second cooling mechanism (13) through a pipeline; the water outlet end of the second cooling mechanism (13) is connected to the input end of the water storage tank (12) through a pipeline; the water storage tank (12) is connected to the first water pump (11) through a pipeline; the output end of the first water pump (11) is connected to the water injection port of the main body (1) through a pipeline; and the air outlet is arranged on the top of the main body (1).

2. A high-efficiency condensing steam boiler according to claim 1, Features: The main body (1) is provided with a liquid level meter (4), and the top of the main body (1) is provided with a thermometer and a pressure gauge.

3. A high-efficiency condensing steam boiler according to claim 1, Features: The re-ignition chamber (17) is fixedly provided with an inspection pipe (6), the inspection pipe (6) passes through the first smoke chamber (2), and a cover plate (7) is fixedly provided at a port of the inspection pipe (6) outside the first smoke chamber (2) by means of bolts.

4. A high-efficiency condensing steam boiler according to claim 1, Features: The top of the main body (1) is symmetrically fixed with lifting ears (8).

5. A high-efficiency condensing steam boiler according to claim 1, Features: The first cooling mechanism (9) comprises a first heat-insulating shell (20), a first partition (21) is symmetrically fixedly installed in the first heat-insulating shell (20), a plurality of first heat exchange tubes (22) are evenly fixedly installed between the first partitions (21), both ends of the first heat exchange tubes (22) pass through the corresponding first partitions (21), the air inlet of the first heat-insulating shell (20) is connected to the blower (10), and the air outlet of the first heat-insulating shell (20) is connected to the air inlet of the burner (5).

6. A high-efficiency condensing steam boiler according to claim 1, Features: The second cooling mechanism (13) comprises a second heat-insulating shell (23), a water exchange pipe (24) is arranged inside the second heat-insulating shell (23), and two ends of the water exchange pipe (24) are connected to a water injection end and a water outlet end of the second heat-insulating shell (23).

7. A high-efficiency condensing steam boiler according to claim 1, Features: The third cooling mechanism (14) comprises a third heat-insulating shell (25), the inner wall of which is symmetrically fixedly mounted with a second partition (26), a plurality of second heat exchange tubes (27) are evenly fixedly mounted between the second partitions (26), both ends of the second heat exchange tubes (27) pass through the corresponding second partitions (26), the water injection port of the third heat-insulating shell (25) is connected to the second water pump (15), and the water outlet end of the third heat-insulating shell (25) is connected to the water injection end of the second heat-insulating shell (23) of the second cooling mechanism (13) through a connecting pipe.

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