Flue gas cooling device of power station boiler

Abstract

The utility model discloses a flue gas cooling device of a power station boiler, which comprises a boiler, the right end of the boiler is connected with a first support, the right end of the first support is connected with a second support, the right end of the second support is connected with a third support, and cooling mechanisms are arranged on the first support, the second support and the third support. The cooling mechanism can cool flue gas of the power station boiler; the cooling mechanism comprises a first smoke pipe, a supporting box and an air extracting pump, the supporting box and the air extracting pump are installed on the top of the first support, one end of the supporting box is connected with the first smoke pipe, the other end of the supporting box is connected with the air extracting pump, and the other end of the first smoke pipe is connected with the boiler; a cooling mechanism is arranged on the power station boiler, high-temperature flue gas is cooled through multiple sets of cooling links, and the cooling effect of the power station boiler on the exhausted high-temperature flue gas is improved.

Description

Technical Field

[0001] The utility model relates to the field of power station boilers, in particular to a flue gas cooling device for power station boilers. Background Art

[0002] The function of a power plant boiler is to use the heat energy released by fuel combustion to heat feed water, producing a sufficient amount of superheated steam that meets the specified parameters and quality. This steam is then used to drive a steam turbine to generate electricity. Power plant boilers play a vital role in power equipment. During operation, power plant boilers typically generate a large amount of high-temperature flue gas. Before high-temperature flue gas is discharged, it is usually cooled and purified by related equipment. However, the cooling effect of single cooling equipment on high-temperature flue gas needs to be improved.

[0003] Therefore, it is necessary to propose a flue gas cooling device for power station boilers. Summary of the Invention

[0004] The purpose of the utility model is to provide a flue gas cooling device for a power station 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 flue gas cooling device for a power station boiler includes a boiler, wherein the right end of the boiler is connected to a first bracket, the right end of the first bracket is connected to a second bracket, and the right end of the second bracket is connected to a third bracket. A cooling mechanism is provided on the first bracket, the second bracket, and the third bracket, and the cooling mechanism is capable of cooling the flue gas of the power station boiler;

[0007] The cooling mechanism includes a first smoke pipe, a support box and an exhaust pump, which are respectively installed on the top of the first bracket. One end of the support box is connected to the first smoke pipe, the other end of the support box is connected to the exhaust pump, and the other end of the first smoke pipe is connected to the boiler.

[0008] Preferably, a limiting rod is installed inside the support box, and an activated carbon plate is clamped inside the limiting rod. The support box is also hinged with a box door.

[0009] Preferably, a first water tank is installed on the top of the second bracket, a second water tank is installed on the top of the third bracket, a third smoke pipe is installed inside the first water tank, one end of the third smoke pipe is connected to the vacuum pump, and the other end of the third smoke pipe is connected to the second smoke pipe, and the other end of the second smoke pipe is installed with a branch pipe and is arranged inside the second water tank.

[0010] Preferably, water level sensors and thermometers are installed inside the first water tank and the second water tank, the front end of the first water tank is connected to the first water inlet pipe and the first water outlet pipe respectively, and the front end of the second water tank is connected to the second water inlet pipe and the second water outlet pipe respectively.

[0011] Preferably, a cover plate is mounted on the top of the second water tank by means of bolts, and a smoke outlet pipe is mounted on the cover plate.

[0012] Preferably, a U-shaped plate is installed on the top of the second water tank, a water pump is installed on the top of the U-shaped plate, a spray tray is sealed and installed on the upper end of the second smoke pipe, one end of the water pump is connected to an external water pipe, and a water supply pipe is connected between the other end of the water pump and the spray tray.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. Beneficial effects

[0014] By setting a cooling mechanism for the power plant boiler, multiple groups of cooling links are used to cool down the high-temperature flue gas separately, thereby improving the cooling effect of the power plant boiler on the discharged high-temperature flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of a flue gas cooling device for a power station boiler;

[0016] Figure 2 This is a structural diagram of a support box in a flue gas cooling device for a power station boiler;

[0017] Figure 3 This is a structural diagram of the first water tank in a flue gas cooling device for a power station boiler;

[0018] Figure 4 This is a schematic diagram of the second water tank in a flue gas cooling device of a power station boiler;

[0019] Figure 5 This is a structural diagram of the second water tank in a flue gas cooling device of a power station boiler.

[0020] In the figure: 1. Boiler; 11. First bracket; 12. Second bracket; 13. Third bracket; 2. Cooling mechanism; 21. First smoke pipe; 22. Support box; 221. Limit rod; 222. Box door; 23. Vacuum pump; 24. First water tank; 241. Water level sensor; 242. Thermometer; 243. First water inlet pipe; 244. First water outlet pipe; 25. Second smoke pipe; 251. Branch pipe; 26. Second water tank; 261. Cover plate; 262. Smoke outlet pipe; 263. Second water inlet pipe; 264. Second water outlet pipe; 27. Activated carbon plate; 28. Third smoke pipe; 29. ​​U-shaped plate; 291. Water pump; 292. Water pipe; 293. Spray tray. DETAILED DESCRIPTION

[0021] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0022] like Figure 1-Figure 5 ;

[0023] A flue gas cooling device for a power plant boiler includes a boiler 1. Boiler 1 is a power plant boiler with a model number of DZH1-1.25-SCI. Its function is to heat feed water using the heat energy released by fuel combustion to produce a sufficient amount of superheated steam that meets specified parameters and quality. The steam then drives a steam turbine to generate electricity. The right end of the boiler 1 is connected to a first bracket 11, which is used to support and install a support box 22 and an air pump 23. The right end of the first bracket 11 is connected to a second bracket 12, which is used to support and install a first water tank 24. The right end of the second bracket 12 is connected to a third bracket 13, which is used to support and install a second water tank 26. A cooling mechanism 2 is provided on the first bracket 11, the second bracket 12, and the third bracket 13. The cooling mechanism 2 is capable of cooling the flue gas from the power plant boiler.

[0024] The cooling mechanism 2 includes a first smoke pipe 21, a support box 22 and an air pump 23. The support box 22 and the air pump 23 are respectively installed on the top of the first bracket 11. The flue gas enters the interior of the support box 22 and is filtered by the internal double-layer activated carbon plate 27. One end of the support box 22 is connected to the first smoke pipe 21. The first smoke pipe 21 is used to discharge the flue gas in the boiler 1. The other end of the support box 22 is connected to the air pump 23. The model of the air pump 23 is WFXFYB-002. The air pump 23 is used to extract the flue gas in the support box 22, accelerate the filtration of the flue gas in the support box 22, and filter the flue gas. The gas is first filtered to reduce the pollution of the water in the second water tank 26. The other end of the first smoke pipe 21 is connected to the boiler 1. The smoke is transported to the support box 22 through the first smoke pipe 21. A limit rod 221 is installed inside the support box 22. The limit rod 221 is used to limit the installation of the activated carbon plate 27. The activated carbon plate 27 is clamped inside the limit rod 221. The activated carbon plate 27 filters the smoke passing through. The support box 22 is also hinged with a box door 222. A sealing gasket is provided at the connection between the support box 22 and the box door 222. After the box door 222 is closed, the support box 22 can be sealed.

[0025] Furthermore, a first water tank 24 is installed on the top of the second bracket 12. Water is stored in the first water tank 24 to cool the heat on the third smoke pipe 28. A second water tank 26 is installed on the top of the third bracket 13. Water is stored in the second water tank 26 to cool the incoming flue gas. A third smoke pipe 28 is installed inside the first water tank 24. The first water tank 24 and the third smoke pipe 28 both have a certain length, so that part of the heat on the third smoke pipe 28 can be cooled. One end of the third smoke pipe 28 is connected to the suction pump 23, and the smoke in the third smoke pipe 28 is transported to the second water tank 26 through the second smoke pipe 25 to continue cooling. The other end of the third smoke pipe 28 is connected to the second smoke pipe 25. The other end of the second smoke pipe 25 is equipped with a branch pipe 251 and is arranged inside the second water tank 26. The smoke in the second smoke pipe 25 evenly enters the water in the second water tank 26 through the branch pipe 251 for cooling.

[0026] Furthermore, a water level sensor 241 and a thermometer 242 are installed inside the first water tank 24 and the second water tank 26. The model of the water level sensor 241 is F-CD100, and the model of the thermometer 242 is KY-PGT. The water level sensors 241 in the first water tank 24 and the second water tank 26 are respectively used to detect the water level, and the thermometers 242 in the first water tank 24 and the second water tank 26 are respectively used to detect the water temperature. The front end of the first water tank 24 is respectively connected to a first water inlet pipe 243 and a first water outlet pipe 244. The first water inlet pipe 243 is connected to an external water source, and water is supplied to the first water tank 24 through a water pump. The first water outlet pipe 244 is externally connected to a valve for discharging the hot water in the first water tank 24. The front end of the second water tank 26 is respectively connected to a second water inlet pipe 263 and a second water outlet pipe 264. The second water inlet pipe 263 is connected to an external water source, and water is supplied to the second water tank 26 through a water pump. The second water outlet pipe 264 is externally connected to a valve for discharging the hot water in the first water tank 24. The sewage in the second water tank 26 is discharged outwards. A cover plate 261 is installed on the top of the second water tank 26 by bolts. The cover plate 261 is installed not only for supporting and installing the smoke pipe 262, but also for closing the upper end of the second water tank 26. A smoke pipe 262 is installed on the cover plate 261. The smoke pipe 262 is used to discharge the cooled smoke outwards. A U-shaped plate 29 is installed on the top of the second water tank 26. The U-shaped plate 29 is used to support and install the water pump 291. The U-shaped plate 29 A water pump 291 is installed on the top of the second smoke pipe 25. The model of the water pump 291 is 40-200B. The water pump 291 is connected to an external water source and then transports water to the water spray tray 293 through a water pipe 292. The water spray tray 293 is sealed and installed on the upper end of the second smoke pipe 25. The water spray tray 293 sprays the inside of the second smoke pipe 25 to cool the smoke in the second smoke pipe 25. One end of the water pump 291 is connected to an external water pipe, and the water pipe 292 is connected between the other end of the water pump 291 and the water spray tray 293.

[0027] The working principle of the present invention is as follows: the smoke is transported to the support box 22 through the first smoke pipe 21, the exhaust pump 23 extracts the smoke in the support box 22, accelerates the filtration of the smoke in the support box 22, and filters the smoke passing through the activated carbon plate 27. The smoke is first filtered to slow down the pollution of the water in the second water tank 26, and then the exhaust pump 23 draws the smoke into the third smoke pipe 28. The first water tank 24 and the third smoke pipe 28 have a certain length. Therefore, part of the heat on the third smoke pipe 28 is cooled by the water in the first water tank 24. The first water inlet pipe 243 is connected to the water source, and water is added to the first water tank 24 through the water pump. The first water outlet pipe 244 is externally connected to a valve for discharging the hot water in the first water tank 24 to the outside. The water level sensor 241 in 24 is used to detect the water level, and the thermometer 242 in the first water tank 24 is used to detect the water temperature. The flue gas in the third smoke pipe 28 is transported to the second water tank 26 through the second smoke pipe 25 to continue to cool down. The water pump 291 is connected to an external water source, and then transports water to the spray tray 293 through the water pipe 292. The second smoke pipe 25 is sprayed through the spray tray 293 to cool the flue gas in the second smoke pipe 25. The flue gas in the second smoke pipe 25 enters the water in the second water tank 26 evenly through the branch pipe 251 for cooling. The water level sensor 241 in the second water tank 26 is used to detect the water level, and the thermometer 242 in the second water tank 26 is used to detect the water temperature. The flue gas is finally discharged to the next step through the smoke outlet pipe 262.

[0028] While the present invention has been described above with reference to specific embodiments, various modifications may be made and equivalent components may be substituted without departing from the scope of the present invention. In particular, as long as no structural conflicts exist, the various features of the embodiments disclosed herein may be combined with one another in any manner, and the omission of an exhaustive description of these combinations in this specification is solely for the sake of space and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A flue gas cooling device for a power station boiler, comprising a boiler (1), wherein the right end of the boiler (1) is connected to a first bracket (11), the right end of the first bracket (11) is connected to a second bracket (12), and the right end of the second bracket (12) is connected to a third bracket (13), characterized in that: A cooling mechanism (2) is provided on the first bracket (11), the second bracket (12), and the third bracket (13), and the cooling mechanism (2) is capable of cooling the flue gas of the power station boiler; The cooling mechanism (2) comprises a first smoke pipe (21), a support box (22) and an air pump (23), wherein the support box (22) and the air pump (23) are respectively mounted on the top of the first bracket (11), one end of the support box (22) is connected to the first smoke pipe (21), the other end of the support box (22) is connected to the air pump (23), and the other end of the first smoke pipe (21) is connected to the boiler (1).

2. The flue gas cooling device for a power station boiler according to claim 1, characterized in that: A limiting rod (221) is installed inside the support box (22), and an activated carbon plate (27) is clamped inside the limiting rod (221). A box door (222) is also hinged on the support box (22).

3. The flue gas cooling device for a power station boiler according to claim 2, characterized in that: A first water tank (24) is installed on the top of the second bracket (12), a second water tank (26) is installed on the top of the third bracket (13), a third smoke pipe (28) is installed inside the first water tank (24), one end of the third smoke pipe (28) is connected to the air pump (23), the other end of the third smoke pipe (28) is connected to the second smoke pipe (25), and a branch pipe (251) is installed on the other end of the second smoke pipe (25) and is arranged inside the second water tank (26).

4. The flue gas cooling device for a power station boiler according to claim 3, characterized in that: A water level sensor (241) and a thermometer (242) are installed inside the first water tank (24) and the second water tank (26). The front end of the first water tank (24) is connected to a first water inlet pipe (243) and a first water outlet pipe (244), respectively. The front end of the second water tank (26) is connected to a second water inlet pipe (263) and a second water outlet pipe (264), respectively.

5. The flue gas cooling device for a power station boiler according to claim 3, characterized in that: A cover plate (261) is mounted on the top of the second water tank (26) via bolts, and a smoke outlet pipe (262) is mounted on the cover plate (261).

6. The flue gas cooling device for a power station boiler according to claim 3, characterized in that: A U-shaped plate (29) is installed on the top of the second water tank (26), a water pump (291) is installed on the top of the U-shaped plate (29), a water spray disc (293) is sealed and installed on the upper end of the second smoke pipe (25), one end of the water pump (291) is connected to an external water pipe, and a water delivery pipe (292) is connected between the other end of the water pump (291) and the water spray disc (293).

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