CN211952718U - Quick cooling device for coal-fired boiler top bale - Google Patents
Quick cooling device for coal-fired boiler top bale Download PDFInfo
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- CN211952718U CN211952718U CN202020273122.9U CN202020273122U CN211952718U CN 211952718 U CN211952718 U CN 211952718U CN 202020273122 U CN202020273122 U CN 202020273122U CN 211952718 U CN211952718 U CN 211952718U
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Abstract
The utility model relates to a coal fired boiler equipment's technical field discloses a coal fired boiler furnace roof bale fast cold charge is put, and the boiler includes furnace roof bale and furnace, and the big package of furnace roof sets up in furnace's top, including natural wind suction inlet, hot air discharge port, hot-blast backward flow mouth and ventilation pipe, natural wind suction inlet and hot-blast discharge port all set up on the big package of furnace roof, and hot-blast backward flow mouth sets up on furnace, and the one end and the hot-blast discharge port of ventilation pipe are connected, and the other end and the hot-blast backward flow mouth of ventilation pipe are connected, and natural wind suction inlet department is equipped with the door that opens and shuts, and hot air discharge port and hot-blast backward flow mouth department. The utility model has the advantages of rapid reduction of the internal temperature of the furnace top bale, safety and reliability.
Description
Technical Field
The utility model relates to a coal fired boiler equipment's technical field especially relates to a quick cooling device of coal fired boiler furnace roof bale.
Background
The boiler comprises a furnace top big bag and a hearth, when the inside of the furnace top big bag needs to be overhauled, the boiler is shut down firstly, because the inside of the big bag reaches 600 ℃, air cooling needs to be carried out before overhauling at the moment, at present, a plurality of ventilation holes with larger sizes are usually arranged at the side wall of the big bag, the natural ventilation and heat dissipation area is increased, but in the process of hole opening construction, personnel need to contact with the high-temperature side wall under the protection measure of wearing anti-scald clothes to carry out hole opening operation, the operation risk is higher, the safety and logistics investment are larger, when heat dissipation is carried out, a small-sized axial flow fan is additionally arranged at the manhole door of the overhauling people, all the manhole doors and the ventilation holes of the big bag are opened, natural air with low temperature is blown into the big bag to carry out cooling, hot air is discharged through the ventilation holes, but the dust in the big bag is blown up by the arrangement of the axial flow fan, the dust is discharged along, equipment around the vent hole is damaged to a certain extent, so heat insulation measures of other equipment and measures for preventing personnel from being scalded need to be taken in the heat dissipation process, the operation is troublesome, and certain potential safety hazards exist; in addition, the temperature can be reduced to the temperature suitable for maintenance construction (lower than 50 ℃) within about one week by carrying out ventilation cooling by the method, but for the operation period of a unit, the inside of a large boiler package is broken down, the maintenance period exceeds one week, and the economic benefit of a power plant is seriously influenced.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the quick cooling device for the furnace top bale of the coal-fired boiler can quickly reduce the internal temperature of the furnace top bale and is safe and reliable.
In order to solve the technical problem, the utility model provides a coal fired boiler furnace roof bale fast cooling device, the boiler includes furnace roof bale and furnace, furnace roof bale sets up furnace's top, a serial communication port, including natural wind suction inlet, hot air discharge port, hot-blast backward flow mouth and ventilation pipe, natural wind suction inlet with hot air discharge port all sets up furnace roof bale is last, hot-blast backward flow mouth sets up furnace is last, the one end of ventilation pipe with hot air discharge port connects, the other end of ventilation pipe with hot air backward flow mouth connects, natural wind suction inlet department is equipped with the door that opens and shuts, hot air discharge port with hot air backward flow mouth department is equipped with respectively and is used for the break-make the switch of ventilation pipe.
As the preferred proposal of the utility model, the switch on the hot air outlet is a valve.
As the preferred scheme of the utility model, the ventilation pipe with be equipped with the non-metallic expansion joint between the valve.
As the preferred proposal of the utility model, the switch on the hot air return port is a manhole door.
As the utility model discloses preferred scheme, the ventilation pipe pass through the quick-assembling joint with hot-blast backward flow mouth is connected.
As the utility model discloses preferred scheme, the ventilation pipe with be equipped with the nonmetal expansion joint between the ready-packaged joint.
As the preferred proposal of the utility model, the natural wind suction inlet is at least provided with two edges which are respectively arranged on the front and back side surfaces of the furnace top bale.
As the utility model discloses preferred scheme, hot-blast backward flow mouth is equipped with two and sets up respectively the middle part of furnace's front and back both sides face, hot-blast discharge port is equipped with two and all sets up the middle part of the top surface of furnace roof bale, hot-blast discharge port's center pin with the center pin of hot-blast backward flow mouth is crossing.
As the preferred scheme of the utility model, the periphery of ventilation pipe covers there is the insulating layer.
As a preferred scheme of the utility model, an economizer outlet header, a low-temperature superheater inlet header, a low-temperature superheater outlet header, a low-temperature reheater inlet header, a low-temperature reheater outlet header, a high-temperature superheater inlet header, a high-temperature superheater outlet header, a high-temperature reheater inlet header, a high-temperature reheater outlet header and a platen superheater outlet header are sequentially arranged in the furnace top bale;
an economizer, a low-temperature superheater, a low-temperature reheater, a high-temperature superheater, a high-temperature reheater and a platen superheater are arranged in the hearth;
the economizer is characterized in that the economizer, an economizer outlet header, a low-temperature superheater inlet header, a low-temperature superheater outlet header, a low-temperature reheater inlet header, a low-temperature reheater outlet header, a high-temperature superheater inlet header, a high-temperature superheater outlet header, a high-temperature reheater inlet header, a high-temperature reheater outlet header, a screen type superheater and a screen type superheater outlet header are sequentially connected in series through pipelines, the water inlet end of the economizer is connected with upstream equipment, and the water outlet end of the screen type superheater outlet header is connected with downstream equipment.
The embodiment of the utility model provides a coal fired boiler furnace roof bale fast cold charge is put compares with prior art, and its beneficial effect lies in:
before a user overhauls the interior of the furnace top bale, the boiler is stopped, the switch and the opening and closing door are opened, natural wind enters the interior of the furnace top bale from the outside through the natural wind suction inlet, the interior of the furnace top bale is positive pressure due to negative pressure in the ventilation pipe, hot air in the furnace top bale is pressed into the ventilation pipe through the hot air outlet, the hot air in the ventilation pipe enters the hearth from the hot air return port, and the operation is continuously circulated until the internal temperature of the furnace top bale is lower than 50 ℃, and the valve is closed; therefore, hot air in the furnace top large bag is transferred into the hearth, the internal temperature of the furnace top large bag is reduced, meanwhile, heat overflow is avoided, surrounding workers or equipment are not scalded or damaged, the furnace top large bag is safe and reliable, dust is not discharged, and environmental pollution is avoided; and the pressure difference between the ventilating pipe and the furnace top large ladle is utilized, the internal temperature of the furnace top large ladle can be quickly reduced, the cooling speed is high, the shutdown time of the boiler is short, and the economic loss is low.
Drawings
FIG. 1 is a schematic structural diagram of a rapid cooling device for a coal-fired boiler top bale according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a coal-fired boiler;
in the figure, 1, a furnace top bale; 2. a hearth; 3. a natural wind suction port; 4. a hot air outlet; 5. a hot air return port; 6. a vent pipe; 7. a valve; 8. a non-metallic expansion joint; 9. quick coupler; 10. an economizer outlet header; 11. a low-temperature superheater outlet header; 12. a low temperature reheater outlet header; 13. an outlet header of the high-temperature superheater; 14. a high temperature reheater outlet header; 15. a platen superheater outlet header; 16. a high temperature superheater; 17. a high temperature reheater; 18. a platen superheater.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, which indicate the orientation or positional relationship, are used in the present invention as being based on the orientation or positional relationship shown in the drawings, and are used only for convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 and 2, according to the preferred embodiment of the present invention, the coal-fired boiler furnace top bale 1 comprises a furnace top bale 1 and a furnace 2, the furnace top bale 1 is arranged above the furnace 2, and includes a natural wind suction port 3, a hot wind discharge port 4, a hot wind return port 5 and a ventilation pipe 6, the natural wind suction port 3 and the hot wind discharge port 4 are both arranged on the furnace top bale 1, the hot wind return port 5 is arranged on the furnace 2, one end of the ventilation pipe 6 is connected with the hot wind discharge port 4, the other end of the ventilation pipe 6 is connected with the hot wind return port 5, an opening and closing door is arranged at the natural wind suction port 3, and switches for opening and closing the ventilation pipe 6 are respectively arranged at the hot wind discharge port 4 and the hot wind return port 5; it should also be noted that the opening and closing door is a manhole door.
Illustratively, the switch on the hot air outlet 4 is a valve 7, and a non-metal expansion joint 8 is arranged between the ventilation pipe 6 and the valve 7; the switch on the hot air return port 5 is a manhole door, the ventilation pipe 6 is connected with the hot air return port 5 through a quick connector 9, a non-metal expansion joint 8 is arranged between the ventilation pipe 6 and the quick connector 9, a user can overhaul the interior of the hearth 2 through the manhole door, and meanwhile, the manhole door is also connected with the ventilation pipe 6, so that the manhole door is used as a hot air inlet, one hole is multipurpose, through holes formed in a boiler are reduced, and the workload is reduced; in addition, the arrangement of the non-metal expansion joints 8 can compensate the displacement and installation error of the ventilation pipe 6 in a plurality of directions, and reduce the position precision when the hot air outlet 4 and the hot air return opening 5 are opened.
Illustratively, the natural wind suction port 3 is provided with at least two side portions respectively disposed at the front and rear side surfaces of the furnace top bale 1, the hot wind return port 5 is provided with two side portions respectively disposed at the middle portions of the front and rear side surfaces of the furnace 2, the hot wind discharge port 4 is provided with two side portions both disposed at the middle portion of the top surface of the furnace top bale 1, the central axis of the hot wind discharge port 4 intersects the central axis of the hot wind return port 5, and specifically, the natural wind suction port 3 is provided with four side portions respectively disposed at the left and right sides of the side portions at the front and rear side surfaces of the furnace top bale 1, so that natural wind is introduced from the side portions of the furnace top bale 1, hot air is discharged from the middle portion of the furnace top bale 1, natural wind energy is sufficiently introduced into the furnace top bale 1, the temperature inside the furnace top bale 1 can be uniformly reduced, and furthermore, the amount of sucked natural wind is increased, further increasing the speed of reducing the temperature inside the furnace top bale 1.
Illustratively, the periphery of ventilation pipe 6 covers has the insulating layer, prevents that the user from being scalded by ventilation pipe 6, reduces the existence of potential safety hazard.
Illustratively, an economizer outlet header 10, a low-temperature superheater inlet header, a low-temperature superheater outlet header 11, a low-temperature reheater inlet header, a low-temperature reheater outlet header 12, a high-temperature superheater inlet header, a high-temperature superheater outlet header 13, a high-temperature reheater inlet header, a high-temperature reheater outlet header 14 and a platen superheater outlet header 15 are sequentially arranged in the furnace top bale 1; an economizer, a low-temperature superheater, a low-temperature reheater, a high-temperature superheater 16, a high-temperature reheater 17 and a platen superheater 18 are arranged in the hearth 2; the economizer, an economizer outlet header 10, a low-temperature superheater inlet header, a low-temperature superheater outlet header 11, a low-temperature reheater inlet header, a low-temperature reheater outlet header 12, a high-temperature superheater inlet header, a high-temperature superheater 16, a high-temperature superheater outlet header 13, a high-temperature reheater inlet header, a high-temperature reheater 17, a high-temperature reheater outlet header 14, a platen superheater 18 and a platen superheater outlet header 15 are sequentially connected in series through pipelines, the water inlet end of the economizer is connected with upstream equipment, and the water outlet end of the platen superheater outlet header 15 is connected with downstream equipment; specifically, the pipeline is arranged in a U shape, and water in the pipeline is fully heated; therefore, the water is collected or redistributed to other pipelines through the header, and the uniform distribution and uniform heating of the water are ensured.
In summary, before a user overhauls the interior of the furnace top bale 1, the boiler is stopped, a manhole door and an opening and closing door on a hot air backflow port 5 are opened, then a valve 7 is opened, natural air enters the interior of the furnace top bale 1 from the outside through a natural air suction port 3, the interior of the furnace top bale 1 is in positive pressure due to negative pressure in a ventilation pipe 6, hot air in the interior of the furnace top bale 1 is pressed into the ventilation pipe 6 through a hot air discharge port 4, the hot air in the ventilation pipe 6 enters a furnace hearth 2 from the hot air backflow port 5, the circulation is continuously performed until the internal temperature of the furnace top bale 1 is lower than 50 ℃, the valve 7 is closed, a quick-assembly connector 9 is detached, the user enters the interior of the furnace top bale 1 from the manhole door on the natural air suction port 3 for overhauling, and after overhauling is finished, the quick assembly connector 9 is installed between the ventilation pipe 6 and the hot air backflow port; therefore, hot air in the furnace top bale 1 is transferred into the hearth 2, the internal temperature of the furnace top bale 1 is reduced, meanwhile, heat overflow is avoided, surrounding workers or equipment are not scalded or damaged, the furnace top bale is safe and reliable, dust is not discharged, and environmental pollution is avoided; and the pressure difference between the ventilating pipe 6 and the furnace top bale 1 is utilized, the internal temperature of the furnace top bale 1 can be quickly reduced, the cooling speed is high, the shutdown time of the boiler is short, and the economic loss is low.
In the description of the present invention, it is to be understood that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are used in a generic sense, e.g., fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a coal fired boiler furnace top bale fast cooling device, the boiler includes furnace top bale and furnace, the furnace top bale sets up the top of furnace, its characterized in that, including natural wind suction inlet, hot-blast discharge port, hot-blast backward flow mouth and ventilation pipe, natural wind suction inlet with hot-blast discharge port all sets up on the furnace top bale, hot-blast backward flow mouth sets up on the furnace, the one end of ventilation pipe with hot-blast discharge port connects, the other end of ventilation pipe with hot-blast backward flow mouth connects, natural wind suction inlet department is equipped with the door that opens and shuts, hot-blast discharge port with hot-blast backward flow mouth department is equipped with the switch that is used for the break-make ventilation pipe respectively.
2. The quick cooling device for the furnace top bale of the coal-fired boiler as claimed in claim 1, wherein the switch on the hot air outlet is a valve.
3. The quick cooling device for the furnace top bale of the coal-fired boiler according to claim 2, wherein a non-metallic expansion joint is arranged between the ventilating pipe and the valve.
4. The quick cooling device for the furnace top bale of the coal-fired boiler according to claim 1, wherein the switch on the hot air return port is a manhole door.
5. The apparatus of claim 4, wherein the draft tube is connected to the hot air return port by a quick-attach fitting.
6. The apparatus of claim 5, wherein a non-metallic expansion joint is provided between said draft tube and said quick coupler.
7. The apparatus of claim 1, wherein the natural wind suction port is provided with at least two side portions respectively provided on the front and rear sides of the furnace top bale.
8. The quick cooling device for the furnace top bale of the coal-fired boiler according to claim 1, wherein two hot air return openings are provided and are respectively arranged in the middle of the front side surface and the rear side surface of the furnace chamber, two hot air outlet openings are provided and are both arranged in the middle of the top surface of the furnace top bale, and the central axis of the hot air outlet opening intersects with the central axis of the hot air return opening.
9. The rapid cooling device for the coal-fired boiler top bale according to claim 1, wherein the periphery of the ventilation pipe is covered with a heat insulating layer.
10. The rapid cooling device of the furnace top bale of the coal-fired boiler according to claim 1, wherein a coal economizer outlet header, a low-temperature superheater inlet header, a low-temperature superheater outlet header, a low-temperature reheater inlet header, a low-temperature reheater outlet header, a high-temperature superheater inlet header, a high-temperature superheater outlet header, a high-temperature reheater inlet header, a high-temperature reheater outlet header and a platen superheater outlet header are sequentially arranged in the furnace top bale;
an economizer, a low-temperature superheater, a low-temperature reheater, a high-temperature superheater, a high-temperature reheater and a platen superheater are arranged in the hearth;
the economizer is characterized in that the economizer, an economizer outlet header, a low-temperature superheater inlet header, a low-temperature superheater outlet header, a low-temperature reheater inlet header, a low-temperature reheater outlet header, a high-temperature superheater inlet header, a high-temperature superheater outlet header, a high-temperature reheater inlet header, a high-temperature reheater outlet header, a screen type superheater and a screen type superheater outlet header are sequentially connected in series through pipelines, the water inlet end of the economizer is connected with upstream equipment, and the water outlet end of the screen type superheater outlet header is connected with downstream equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020273122.9U CN211952718U (en) | 2020-03-06 | 2020-03-06 | Quick cooling device for coal-fired boiler top bale |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020273122.9U CN211952718U (en) | 2020-03-06 | 2020-03-06 | Quick cooling device for coal-fired boiler top bale |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211952718U true CN211952718U (en) | 2020-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020273122.9U Active CN211952718U (en) | 2020-03-06 | 2020-03-06 | Quick cooling device for coal-fired boiler top bale |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211952718U (en) |
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2020
- 2020-03-06 CN CN202020273122.9U patent/CN211952718U/en active Active
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