CN214501306U - Install power plant boiler of burnt manhole of furnace additional - Google Patents
Install power plant boiler of burnt manhole of furnace additional Download PDFInfo
- Publication number
- CN214501306U CN214501306U CN202022867505.1U CN202022867505U CN214501306U CN 214501306 U CN214501306 U CN 214501306U CN 202022867505 U CN202022867505 U CN 202022867505U CN 214501306 U CN214501306 U CN 214501306U
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- CN
- China
- Prior art keywords
- manhole
- manhole door
- coking
- boiler
- furnace
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000004939 coking Methods 0.000 claims abstract description 31
- 238000007789 sealing Methods 0.000 claims abstract description 27
- 238000004891 communication Methods 0.000 claims abstract 2
- 239000000945 filler Substances 0.000 claims description 15
- 230000009970 fire resistant effect Effects 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000002485 combustion reaction Methods 0.000 abstract 1
- 238000010248 power generation Methods 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 238000005235 decoking Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000011490 mineral wool Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The utility model belongs to the technical field of thermal power generation boilers, in particular to a power station boiler additionally provided with a hearth coking manhole, wherein the coking manhole is arranged on a water wall at a position corresponding to the coking-prone height of a boiler hearth combustion section, a coking manhole door capable of being opened and closed is arranged at the coking manhole and an external communication end in a matching way, the coking manhole door comprises a manhole door cover and a manhole door body which are arranged in a sealing way, the manhole door body is fixedly connected with the outer wall of the boiler hearth, the manhole door cover is hinged with the manhole door body, the manhole door cover can be opened and closed by rotating around a hinge shaft, the coking manhole is fastened and sealed by a connecting flange between the manhole door cover and the manhole door body, the integral design of the hearth is not damaged, the heated surface of the hearth is ensured to operate well, the stable operation requirement is met, the coking manhole door can be repeatedly used after being installed, the labor intensity of workers is greatly reduced, the maintenance and the coking work time is saved, meanwhile, when no coking exists, the air conditioner can be opened for local ventilation.
Description
Technical Field
The utility model belongs to the technical field of thermal power boiler, concretely relates to install power station boiler that furnace beaten burnt manhole additional.
Background
With the upsizing of the thermal power generating set, the space of the boiler furnace of the power station is larger and larger, for example, the width of the furnace of a 300MW unit reaches 14 meters, the depth is 12 meters, the height reaches more than 50 meters, the boiler often generates coking wall hanging in the guard burning section with the height range of 20-30 meters when in operation, slag of the wall hanging can fall off randomly when disturbed by external factors, as shown in fig. 1 and 3, the boiler furnace 3 is fixedly installed through a boiler steel frame 8, a burner nozzle 1 is arranged in the boiler furnace 3, a boiler flue 6 is arranged at the top of the boiler furnace 3, when a water wall pipe 12 in the boiler furnace 3 needs to be overhauled, a scaffold 5 needs to be arranged below the boiler furnace 3, an overhaul person 4 stands on the scaffold 5 to carry out coke cleaning work, the guard burning section coking block 2 which is highly suspended at the position of more than 20 meters poses a great safety threat to the overhaul person 4 at the lower part, the coking block 2 at the guard burning section at the high position generally needs to be firstly treated, however, the height inside the boiler furnace 3 is a great challenge for decoking work, in this case, some power plants have to open holes on the outer wall 9 of the boiler furnace to ensure construction safety, but there are many disadvantages in opening holes on the outer wall 9 of the boiler furnace: (1) temporarily opening a hole on the outer wall 9 of the boiler hearth can damage the structure of a fireproof insulating layer 14 of the boiler and can damage the water wall tubes 12 inside; (2) the open pore needs to be blocked after the operation is finished, so that the efficiency is low, and the original structure of the fire-resistant heat-insulating layer 14 of the hearth is damaged, so that greater potential safety hazard can be caused to the main structure of the boiler.
Disclosure of Invention
In order to solve the problem in the background art, the utility model discloses an install power plant boiler that furnace beaten manhole additional, including beating burnt manhole door, can pass in and out boiler furnace through this burnt manhole door and beat burnt processing, do not destroy furnace global design, can used repeatedly, practice thrift the decoking time.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides an install power plant boiler that burnt manhole is beaten to furnace additional, defend burning the section easy coking at boiler furnace and highly correspond on the position water-cooled wall and seted up and beat the burnt manhole, beat burnt manhole one end and pass the fire-resistant heat preservation and the boiler furnace intercommunication of burning the section, beat the burnt manhole other end and pass boiler furnace outer wall and external intercommunication, and beat that burnt manhole and external intercommunication end coincide and be provided with can the switch beat burnt manhole door, can pass in and out boiler furnace through this and beat burnt processing.
Furthermore, the coke-making manhole door comprises a manhole door cover and a manhole door body which are arranged in a sealing mode, the manhole door body is fixedly connected with the outer wall of the boiler furnace, the manhole door cover and the manhole door body are connected in a hinged mode, the manhole door cover can be opened and closed around a hinged shaft to form a coke-making manhole, and the manhole door cover and the manhole door body are fastened and sealed through a connecting flange.
Furthermore, a sealing filler groove is formed in the position, where the edge of the manhole door body is in contact with the manhole door cover, high-temperature-resistant sealing filler is filled in the sealing filler groove, and the high-temperature-resistant sealing filler and the manhole door body are fixed through a sealing bolt.
And further, a high-temperature refractory layer is arranged on one side, facing the boiler furnace, of the manhole door cover.
Further, a heat insulation layer is arranged between the inner wall of the manhole door cover and the high-temperature fire-resistant layer.
Further, a handle is arranged on the outer wall of the manhole door cover.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses defend burning the easy coking of section and highly correspond the position water-cooled wall and seted up on the manhole of coking, the manhole of coking coincide with external intercommunication end and be provided with can the switch beat the manhole door, can pass in and out boiler furnace through this to beat the manhole door and beat the burnt processing, do not destroy furnace global design, guarantee that furnace heating surface moves well, the air current does not take place baffling and bias current according to former design, reach the steady operation requirement, and beat and can used repeatedly after the manhole door installation, greatly reduced staff intensity of labour and saving overhaul coke cleaning operating time, also can open when not having the coking simultaneously and do the use of local ventilation.
Drawings
Fig. 1 is a schematic view of the installation position of the present invention;
fig. 2 is a schematic front view of the present invention;
fig. 3 is a schematic top view of the present invention;
in the above figures: 1-a burner nozzle; 2-burning preventive section coking block; 3-boiler furnace; 4-maintenance personnel; 5-scaffolding; 6-boiler flue; 7-a burnt manhole door is formed; 7.1-manhole door body; 7.2-manhole door cover; 8-boiler steel frame; 9-the outer wall of the boiler furnace; 10-a handle; 11-a hinged axis; 12-water wall tubes; 13-high temperature refractory layer; 14-fire-resistant insulating layer; 15-fixing the bolt; 16-high temperature resistant sealing filler; 17-sealing bolts.
Detailed Description
For a better understanding of the present invention, the following examples are provided to further illustrate the present invention, but the present invention is not limited to the following examples.
Combine attached figure 1-figure 3 to explain in detail the utility model relates to an install power plant boiler that furnace made burnt manhole additional, boiler furnace defends burning the section easy coking height and correspond the position water-cooled wall on and seted up the manhole of making burnt, make burnt manhole one end pass furnace defend burn the section fire-resistant heat preservation 14 and boiler furnace 3 intercommunication, make burnt manhole other end pass boiler furnace outer wall 9 and external intercommunication, and be provided with the people's hole door 7 that makes burnt that can the switch coincide with external intercommunication end in making burnt manhole, can pass in and out boiler furnace 3 through this people's hole door 7 that makes burnt and make burnt processing, also can open when no coking and make the use of local ventilation.
As an optional design, the coke-making manhole door 7 preferably comprises a manhole door cover 7.2 and a manhole door body 7.1 which are arranged in a sealing manner, the manhole door body 7.1 is fixedly connected with the outer wall 9 of a boiler furnace chamber, the manhole door cover 7.2 is connected with the manhole door body 7.1 in a hinged manner, the manhole door cover 7.2 can open and close a coke-making manhole by rotating around a hinged shaft 11, a plane flange is arranged on the manhole door body 7.1, the manhole door cover 7.2 is tightly sealed with the manhole door body 7.1 through a connecting flange, a sealing filler groove is arranged on the plane flange at the edge of the manhole door body 7.1 and is in contact with the manhole door cover 7.2, a high-temperature-resistant sealing filler 16 is filled in the sealing filler groove, the high-temperature-resistant sealing filler 16 is fixed with the manhole door body 7.1 through a sealing bolt 17, the manhole door cover 7.2 is sealed with the high-temperature-resistant sealing filler 16 after being closed, in addition, the manhole door cover 7.2 is tightly sealed with the manhole door body 7.1 through the fixing bolt 15 after being closed, preventing high-temperature flue gas in the hearth from leaking.
As an optional design, a high-temperature refractory layer 13 is preferably arranged on one side, facing a boiler furnace 3, of the manhole door cover 7.2, the overall design of the furnace is not damaged, the heated surface of the furnace is guaranteed to operate well, air flow does not generate baffling and bias flow according to the original design, the stable operation requirement is met, a heat insulation layer is further arranged between the inner wall of the manhole door cover 7.2 and the high-temperature refractory layer 13, and the heat insulation layer is made of heat insulation rock wool to prevent the temperature of the manhole door cover 7.2 from being too high.
As an alternative design, a handle 10 is preferably arranged on the outer wall of the manhole door cover 7.2, so that the manhole can be conveniently opened and closed by pulling the manhole door cover 7.2 through the handle 10.
The utility model discloses the installation as follows:
preparing a manhole door cover 7.2, perforating a water-cooled wall at a position corresponding to the coking-prone height of a boiler furnace burning section, fully welding a manhole door body 7.1 on the outer wall 9 of a boiler furnace, hinging the manhole door cover 7.2 with the manhole door body 7.1, stacking a high-temperature refractory layer 13 along the inner wall of a boiler furnace 5 for sealing, wherein the high-temperature refractory layer 13 is made of high-temperature refractory bricks, filling heat-preservation rock wool between the high-temperature refractory layer 13 and the manhole door cover 7.2, closing the manhole door cover 7.2, fastening and sealing the manhole door cover 7.2 and the manhole door body 7.1 through a fixing bolt 15 to prevent high-temperature flue gas in the furnace from leaking, fastening a high-temperature-resistant sealing filler 16 through a sealing bolt 17 to keep sealing between the contact surface of the manhole door cover 7.2 and the manhole door body 7.1, opening the manhole door cover 7.2 for coking treatment if coking is found after the boiler is stopped, and opening the manhole door cover 7.2 for local ventilation when no coking is generated, and after the treatment is finished, recovering according to the steps.
The above description is only the application embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and the right scope of the present invention cannot be limited thereby, and any equivalent changes made according to the technical solution of the present invention should be covered within the protection scope of the present invention.
Claims (6)
1. The utility model provides an install power boiler that burnt manhole was beaten to furnace additional, characterized by: the coking manhole is arranged on a water-cooled wall at a position corresponding to the coking height of the boiler furnace burning guarding section, one end of the coking manhole penetrates through a fire-resistant heat preservation layer of the furnace burning guarding section to be communicated with the boiler furnace, the other end of the coking manhole penetrates through the outer wall of the boiler furnace to be communicated with the outside, a coking manhole door capable of being opened and closed is arranged at the coking manhole and the outside communication end in an anastomotic mode, and the coking manhole door can enter and exit the boiler furnace to be subjected to coking treatment.
2. The utility boiler with the coke-burning furnace manhole as set forth in claim 1, wherein: the coke-making manhole door comprises a manhole door cover and a manhole door body which are arranged in a sealing mode, the manhole door body is fixedly connected with the outer wall of a boiler furnace chamber, the manhole door cover and the manhole door body are connected in a hinged mode, the manhole door cover rotates around a hinged shaft and can be opened and closed to form a coke-making manhole, and the manhole door cover and the manhole door body are fastened and sealed through a connecting flange.
3. The utility boiler with the coke-burning furnace manhole as set forth in claim 2, wherein: the manhole door is characterized in that a sealing filler groove is formed in the position, in contact with a manhole door cover, of the edge of the manhole door body, high-temperature-resistant sealing filler is filled in the sealing filler groove, and the high-temperature-resistant sealing filler and the manhole door body are fixed through sealing bolts.
4. The utility boiler with the coke-burning furnace manhole as set forth in claim 2, wherein: and a high-temperature refractory layer is arranged on one side of the manhole door cover, which faces the boiler furnace.
5. The utility boiler with the coke-burning furnace manhole as set forth in claim 4, wherein: and a heat-insulating layer is also arranged between the inner wall of the manhole door cover and the high-temperature fire-resistant layer.
6. The utility boiler with the coke-burning furnace manhole as set forth in claim 5, wherein: the outer wall of the manhole door cover is provided with a handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022867505.1U CN214501306U (en) | 2020-12-04 | 2020-12-04 | Install power plant boiler of burnt manhole of furnace additional |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022867505.1U CN214501306U (en) | 2020-12-04 | 2020-12-04 | Install power plant boiler of burnt manhole of furnace additional |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214501306U true CN214501306U (en) | 2021-10-26 |
Family
ID=78207314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022867505.1U Expired - Fee Related CN214501306U (en) | 2020-12-04 | 2020-12-04 | Install power plant boiler of burnt manhole of furnace additional |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214501306U (en) |
-
2020
- 2020-12-04 CN CN202022867505.1U patent/CN214501306U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211026 |