CN219318420U - Cooling device for circulating fluidized bed boiler - Google Patents
Cooling device for circulating fluidized bed boiler Download PDFInfo
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- CN219318420U CN219318420U CN202320385627.8U CN202320385627U CN219318420U CN 219318420 U CN219318420 U CN 219318420U CN 202320385627 U CN202320385627 U CN 202320385627U CN 219318420 U CN219318420 U CN 219318420U
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- fluidized bed
- circulating fluidized
- bed boiler
- water tank
- heat exchange
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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Abstract
The utility model discloses a cooling device for a circulating fluidized bed boiler, which comprises a furnace cover, wherein the furnace cover is arranged above a circulating fluidized bed boiler shell, a water tank is arranged on one side of the circulating fluidized bed boiler shell, and a drain valve is arranged on one side of the water tank; the heat exchange tube is arranged in the circulating fluidized bed boiler shell, the heat exchange tube is connected with the circulating fluidized bed boiler shell into a whole, the heat exchange tube is spirally arranged in the circulating fluidized bed boiler shell, a water pump is arranged above the water tank, a water inlet pipe is arranged between the water pump and the water tank and the heat exchange tube, a water return pipe is arranged on one side of the other end of the heat exchange tube, a heat exchange structure is arranged on the circulating fluidized bed boiler shell, heat on the circulating fluidized bed boiler shell is released rapidly by the aid of the heat exchange structure, the temperature of the circulating fluidized bed boiler shell is controlled, the appearance temperature of the circulating fluidized bed boiler shell is prevented from being too high, and the use efficiency of the circulating fluidized bed boiler is indirectly improved.
Description
Technical Field
The utility model relates to the technical field of circulating fluidized bed boilers, in particular to a cooling device for a circulating fluidized bed boiler.
Background
The circulating fluidized bed boiler is an energy-saving product with high efficiency and low pollution, the circulating fluidized bed boiler utilizes the circulating fluidized bed combustion technology, has the advantages of high efficiency, low pollution, wide fuel use, high ash utilization rate and the like, and comprises a hearth, wherein an air distribution plate is arranged at the bottom of the hearth, a fluidized bed is arranged above the air distribution plate, an air chamber is arranged below the air distribution plate, and primary fluidization air enters and passes through the air distribution plate from the air chamber when in use, so that materials on the fluidized bed are fluidized.
The Chinese patent publication No. CN210688201U, the authorized bulletin day is 2020, 06 and 05, a cooling device for a circulating fluidized bed boiler, a boiler component comprises a boiler body, a separator body, a tail flue and a first pipeline; the cooling assembly comprises a feed back vertical pipe, a feed back device, a first feed back leg and a second feed back leg; the steel tube membrane wall comprises steel tubes, fins and pins. The utility model adopts the steel pipe film wall to carry out heat exchange with the condensed water for cooling, thereby achieving the purpose of heating the condensed water, improving the circulating heat efficiency of the steam turbine, reducing the thickness of refractory materials of the material returning device, reducing the use amount of the refractory materials and shortening the construction period. The water-cooled material returning device can solve the problem of over-temperature burning of the refractory material of the material returning device, can absorb the heat of the hot ash of the material returning device, and reduces the temperature of the material returning device, thereby playing a role in reducing the temperature of the boiler hearth and reducing the expansion amount of the refractory material in the starting and stopping and normal running processes of the boiler; the external temperature of the material returning device can be reduced, the heat loss is reduced, and the boiler efficiency is improved.
In order to reduce heat loss in the use process of the conventional circulating fluidized bed boiler, the sealing performance of the circulating fluidized bed boiler is good, heat cannot be released rapidly in the operation process, the heat is accumulated on a furnace body to raise the temperature, the operation of the boiler can be influenced due to the overhigh surface temperature of the circulating fluidized bed boiler, the use effect of the circulating fluidized bed boiler is reduced, and the use requirement cannot be met.
Disclosure of Invention
The utility model aims to provide a cooling device for a circulating fluidized bed boiler, which aims to solve the problems that in the prior art, in order to reduce heat loss in the use process of the conventional circulating fluidized bed boiler, the sealing performance of the circulating fluidized bed boiler is good, heat cannot be quickly released in the operation process, the heat is accumulated on a furnace body to raise the temperature, the operation of the boiler is influenced due to the fact that the external temperature of the circulating fluidized bed boiler is too high, the use effect of the circulating fluidized bed boiler is reduced, and the use requirement cannot be met.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a cooling device for a circulating fluidized bed boiler, comprising a circulating fluidized bed boiler housing, further comprising:
the furnace cover is arranged above the circulating fluidized bed boiler shell and is fixedly connected with the circulating fluidized bed boiler shell, a water tank is arranged on one side of the circulating fluidized bed boiler shell, a drain valve is arranged on one side of the water tank, and the drain valve is connected with the water tank into a whole;
the heat exchange tube is arranged in the circulating fluidized bed boiler shell, the heat exchange tube is connected with the circulating fluidized bed boiler shell into a whole, the heat exchange tube is spirally arranged in the circulating fluidized bed boiler shell, a water pump is arranged above the water tank and fixedly connected with the water tank, a water inlet pipe is arranged between the water pump and the water tank and the heat exchange tube, the water inlet pipe is connected with one end of the water pump and one end of the heat exchange tube into a whole, one side of the other end of the heat exchange tube is provided with a water return pipe, the water return pipe is connected with the heat exchange tube into a whole, and one ends of the water inlet pipe and the water return pipe are all extended into the water tank.
Preferably, the bottom of the water tank is provided with refrigeration equipment, the refrigeration equipment is connected with the water tank into a whole, the lower end of the water inlet pipe is provided with a filter head, and the filter head is fixedly connected with the water inlet pipe.
Preferably, a temperature sensor is arranged on one side of the circulating fluidized bed boiler shell, the temperature sensor is fixedly connected with the circulating fluidized bed boiler shell, and one end of the temperature sensor penetrates through and extends to the inside of the circulating fluidized bed boiler shell.
Preferably, the center department of bell is provided with the heat dissipation window, and the cross-section of heat dissipation window is loudspeaker form setting, the inside of heat dissipation window is provided with high temperature resistant fan, and high temperature resistant fan and bell fixed connection.
Preferably, the top of bell is provided with the lifter plate, the below of lifter plate is provided with the sealing member, and sealing member and lifter plate fixed connection, the cross-section of sealing member is trapezoidal setting, and sealing member and heat dissipation window correspond the setting, the both sides of sealing member all are provided with electric telescopic handle, and electric telescopic handle's both ends respectively with bell and lifter plate fixed connection.
Preferably, a metal filter screen is arranged below the radiating window, and the metal filter screen is fixedly connected with the furnace cover.
Compared with the prior art, the utility model has the beneficial effects that:
the device of the utility model is provided with the heat exchange tube, the water pump, the water inlet pipe, the water return pipe and the refrigerating equipment, water is extracted and injected into the heat exchange tube by the water pump and the water inlet pipe, the heat on the shell of the circulating fluidized bed boiler is absorbed and transferred by utilizing the water flowing in the heat exchange tube, the cooling of the shell of the circulating fluidized bed boiler is quickened, the water in the heat exchange tube is returned to the water tank by the water return pipe for recycling, the refrigerating equipment cools the water in the water tank, the water absorption capacity is ensured, and the cooling efficiency is indirectly improved;
the device of the utility model can rapidly discharge heat in the circulating fluidized bed boiler by the heat radiation window, the high temperature resistant fan and the metal filter screen, and can also play a role in cooling, and the metal filter screen filters discharged heat flow and filters impurities;
according to the device, through the arrangement of the lifting plate, the sealing element and the electric telescopic rod, the electric telescopic rod drives the lifting plate to lift, the sealing element is pulled out of the radiating window to facilitate ventilation, and the sealing element is inserted into the radiating window to be attached to the furnace cover so as to ensure the tightness of the circulating fluidized bed boiler.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a diagram showing the connection relationship between the lifting plate and the furnace cover;
FIG. 3 is a diagram showing the connection relationship between the heat exchange tube and the circulating fluidized bed boiler shell;
fig. 4 is a structural view of the water tank of the present utility model.
In the figure: 1. a circulating fluidized bed boiler housing; 2. a furnace cover; 3. a lifting plate; 4. a temperature sensor; 5. a water tank; 6. a drain valve; 7. a water pump; 8. a water inlet pipe; 9. a water return pipe; 10. a heat radiation window; 11. a high temperature resistant fan; 12. a metal filter screen; 13. a seal; 14. an electric telescopic rod; 15. a heat exchange tube; 16. a refrigeration device; 17. and (5) a filter head.
Description of the embodiments
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Referring to fig. 1-4, an embodiment of the present utility model is provided: a cooling device for a circulating fluidized bed boiler, comprising a circulating fluidized bed boiler housing 1, further comprising:
the furnace cover 2 is arranged above the circulating fluidized bed boiler shell 1, the furnace cover 2 is fixedly connected with the circulating fluidized bed boiler shell 1, a water tank 5 is arranged on one side of the circulating fluidized bed boiler shell 1, a drain valve 6 is arranged on one side of the water tank 5, and the drain valve 6 is connected with the water tank 5 into a whole;
the heat exchange tube 15, it sets up in the inside of circulating fluidized bed boiler casing 1, and heat exchange tube 15 is connected as an organic wholely with circulating fluidized bed boiler casing 1, heat exchange tube 15 is the heliciform setting in the inside of circulating fluidized bed boiler casing 1, the top of water tank 5 is provided with water pump 7, and water pump 7 and water tank 5 fixed connection, be provided with inlet tube 8 between water pump 7 and water tank 5 and the heat exchange tube 15, and inlet tube 8 is connected as an organic wholely with the one end of water pump 7 and heat exchange tube 15, one side of the heat exchange tube 15 other end is provided with wet return 9, and wet return 9 is connected as an organic wholely with heat exchange tube 15, the one end of inlet tube 8 and wet return 9 all extends to the inside of water tank 5.
When in use, the utility model is characterized in that: and a proper amount of water is injected into the water tank 5, the water pump 7 is started to pump and inject the water in the water tank 5 into the heat exchange tube 15 through the water inlet tube 8, the heat exchange tube 15 is made of high heat conduction metal, the heat on the circulating fluidized bed boiler shell 1 is quickly absorbed by utilizing the flow energy of the water in the heat exchange tube 15, the heat dissipation and cooling effects are realized, and the water after heat absorption flows into the water tank 5 for recycling along the water return tube 9.
Referring to fig. 4, a refrigerating device 16 is arranged at the bottom of the water tank 5, the refrigerating device 16 is connected with the water tank 5 into a whole, a filter head 17 is arranged at the lower end of the water inlet pipe 8, the filter head 17 is fixedly connected with the water inlet pipe 8, water in the water tank 5 is cooled through the refrigerating device 16, the water heat absorption capacity is guaranteed, the cooling efficiency is improved, and the filter head 17 filters the extracted water to filter scale.
Referring to fig. 1, a temperature sensor 4 is disposed at one side of a circulating fluidized bed boiler housing 1, the temperature sensor 4 is fixedly connected with the circulating fluidized bed boiler housing 1, one end of the temperature sensor 4 penetrates through and extends to the inside of the circulating fluidized bed boiler housing 1, and the temperature in the circulating fluidized bed boiler can be measured by the temperature sensor 4.
Referring to fig. 1 and 2, a heat dissipation window 10 is disposed at the center of the furnace cover 2, the cross section of the heat dissipation window 10 is in a horn shape, a high temperature resistant fan 11 is disposed in the heat dissipation window 10, the high temperature resistant fan 11 is fixedly connected with the furnace cover 2, heat in the circulating fluidized bed boiler can be exhausted through the heat dissipation window 10, the high temperature resistant fan 11 accelerates air flow, and the cooling function can be achieved.
Referring to fig. 1 and 2, a lifting plate 3 is arranged above a furnace cover 2, a sealing element 13 is arranged below the lifting plate 3, the sealing element 13 is fixedly connected with the lifting plate 3, the cross section of the sealing element 13 is in a trapezoid shape, the sealing element 13 and a radiating window 10 are correspondingly arranged, electric telescopic rods 14 are arranged on two sides of the sealing element 13, two ends of each electric telescopic rod 14 are fixedly connected with the furnace cover 2 and the lifting plate 3 respectively, the lifting plate 3 is driven to lift through the electric telescopic rods 14, the connection state of the sealing element 13 and the furnace cover 2 is changed along with the lifting of the lifting plate 3, the sealing element 13 and the furnace cover 2 are separated to facilitate air exhaust, and the sealing element 13 is attached to the furnace cover 2 to ensure the sealing performance of the circulating fluidized bed boiler.
Referring to fig. 2, a metal filter 12 is disposed below the heat dissipation window 10, and the metal filter 12 is fixedly connected to the furnace cover 2, and the metal filter 12 filters the discharged heat flow to remove impurities.
Working principle: a proper amount of water is injected into the water tank 5, the water pump 7 is started to pump and inject the water in the water tank 5 into the heat exchange tube 15 through the water inlet tube 8, the heat exchange tube 15 is made of high heat conduction metal, the heat on the circulating fluidized bed boiler shell 1 is quickly absorbed by utilizing the flowing energy of the water in the heat exchange tube 15, the heat dissipation and cooling effects are realized, the absorbed water flows into the water tank 5 along the water return tube 9 for recycling, the refrigerating equipment 16 is started to cool the water in the water tank 5, the water heat absorption capacity is ensured, and the cooling efficiency is improved; the electric telescopic rod 14 is driven to drive the lifting plate 3 to ascend, the sealing element 13 is separated from the furnace cover 2, the high-temperature-resistant fan 11 is started to quicken the air flow in the heat radiating window 10, the heat in the circulating fluidized bed boiler is discharged faster, the cooling function is also achieved, the electric telescopic rod 14 is driven to drive the lifting plate 3 to descend, and the sealing element 13 is attached to the furnace cover 2 to ensure the tightness.
What is not described in detail in this specification is prior art known to those skilled in the art.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A cooling device for a circulating fluidized bed boiler, comprising a circulating fluidized bed boiler housing (1), characterized by further comprising:
the furnace cover (2) is arranged above the circulating fluidized bed boiler shell (1), the furnace cover (2) is fixedly connected with the circulating fluidized bed boiler shell (1), a water tank (5) is arranged on one side of the circulating fluidized bed boiler shell (1), a drain valve (6) is arranged on one side of the water tank (5), and the drain valve (6) is connected with the water tank (5) into a whole;
the heat exchange tube (15) is arranged in the circulating fluidized bed boiler shell (1), the heat exchange tube (15) is connected with the circulating fluidized bed boiler shell (1) into a whole, the heat exchange tube (15) is spirally arranged in the circulating fluidized bed boiler shell (1), the water pump (7) is arranged above the water tank (5), the water pump (7) is fixedly connected with the water tank (5), the water inlet tube (8) is arranged between the water pump (7) and the water tank (5) and is connected with one end of the water pump (7) and one end of the heat exchange tube (15) into a whole, one side of the other end of the heat exchange tube (15) is provided with the water return tube (9), the water return tube (9) is connected with the heat exchange tube (15) into a whole, and one ends of the water inlet tube (8) and the water return tube (9) are all extended into the water tank (5).
2. A cooling device for a circulating fluidized bed boiler according to claim 1, characterized in that: the bottom of water tank (5) is provided with refrigeration plant (16), and refrigeration plant (16) are connected as an organic wholely with water tank (5), the lower extreme of inlet tube (8) is provided with filter head (17), and filter head (17) and inlet tube (8) fixed connection.
3. A cooling device for a circulating fluidized bed boiler according to claim 1, characterized in that: one side of the circulating fluidized bed boiler shell (1) is provided with a temperature sensor (4), the temperature sensor (4) is fixedly connected with the circulating fluidized bed boiler shell (1), and one end of the temperature sensor (4) penetrates through and extends to the inside of the circulating fluidized bed boiler shell (1).
4. A cooling device for a circulating fluidized bed boiler according to claim 1, characterized in that: the heat radiation furnace is characterized in that a heat radiation window (10) is arranged at the center of the furnace cover (2), the cross section of the heat radiation window (10) is in a horn shape, a high temperature resistant fan (11) is arranged in the heat radiation window (10), and the high temperature resistant fan (11) is fixedly connected with the furnace cover (2).
5. The cooling device for a circulating fluidized bed boiler according to claim 4, wherein: the top of bell (2) is provided with lifter plate (3), the below of lifter plate (3) is provided with sealing member (13), and sealing member (13) and lifter plate (3) fixed connection, the cross-section of sealing member (13) is trapezoidal setting, and sealing member (13) correspond setting with heat dissipation window (10), the both sides of sealing member (13) all are provided with electric telescopic handle (14), and electric telescopic handle (14) both ends respectively with bell (2) and lifter plate (3) fixed connection.
6. The cooling device for a circulating fluidized bed boiler according to claim 4, wherein: a metal filter screen (12) is arranged below the radiating window (10), and the metal filter screen (12) is fixedly connected with the furnace cover (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320385627.8U CN219318420U (en) | 2023-03-06 | 2023-03-06 | Cooling device for circulating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320385627.8U CN219318420U (en) | 2023-03-06 | 2023-03-06 | Cooling device for circulating fluidized bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219318420U true CN219318420U (en) | 2023-07-07 |
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ID=87028634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320385627.8U Active CN219318420U (en) | 2023-03-06 | 2023-03-06 | Cooling device for circulating fluidized bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219318420U (en) |
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2023
- 2023-03-06 CN CN202320385627.8U patent/CN219318420U/en active Active
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