CN218763374U - A hood mounting structure for circulating fluidized bed boiler - Google Patents
A hood mounting structure for circulating fluidized bed boiler Download PDFInfo
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- CN218763374U CN218763374U CN202223254240.3U CN202223254240U CN218763374U CN 218763374 U CN218763374 U CN 218763374U CN 202223254240 U CN202223254240 U CN 202223254240U CN 218763374 U CN218763374 U CN 218763374U
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- hood
- hole
- fluidized bed
- head
- air cap
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Abstract
The utility model relates to a circulating fluidized bed boiler technical field specifically is a hood mounting structure for circulating fluidized bed boiler, and it can reduce installation work load, dismantles to change simply, can not cause the damage to the hood, and it is including installing the hood takeover on the grid plate, install the hood head on the hood takeover, a serial communication port, first through-hole has been seted up to hood head lower part lateral wall both sides, the hood take over seted up with first through-hole complex second through-hole, the hood headgear adorn in on the hood takeover and by inserting the round pin axle of first through-hole, second through-hole will the hood head is fixed, hood head lower part outer lane cover is equipped with the ring retaining ring.
Description
Technical Field
The utility model relates to a circulating fluidized bed boiler technical field specifically is a hood mounting structure for circulating fluidized bed boiler.
Background
Circulating fluidized bed boilers (CFB) are a high efficiency, low pollution and well integrated coal burning technology developed in the eighties, which has been rapidly developed due to its unique advantages in coal type adaptability and variable load capacity as well as reduced pollutant emissions.
The material of the circulating fluidized bed boiler is combusted on the air distribution plate at the bottom of the hearth, and the material is kept in a fluidized state through the fluidizing air cap arranged on the air distribution plate, so that the environment where the fluidizing air cap and the connecting pipe are located is a high-temperature and high-wear area. At present, a fluidization hood is fixed on a furnace air distribution plate in a welding mode, the structure of the fluidization hood is shown in figure 1, wherein 1 is the air distribution plate 1, protective casting materials are arranged on the air distribution plate 1, 2 is a hood connecting pipe, 3 is a hood head, and the hood head 3 and the hood connecting pipe 2 are welded and fixed on site. At present, about 850 blast caps are arranged at 220t/h of the circulating fluidized bed boiler, about 2100 blast caps are arranged at 480t/h of the circulating fluidized bed boiler, and the welding workload of construction site installation is large.
In addition, because the fluidization hood is in a high-temperature and high-abrasion environment, the fluidization hood as a quick-wear part needs to be maintained regularly, and if the fluidization hood is damaged, the quick-wear part needs to be replaced. The blast cap head 3 and the blast cap connecting pipe 2 are connected in a welding mode, polishing or knocking is needed during replacement, the blast cap connecting pipe 2 is complex and time-consuming, and the blast cap connecting pipe 2 is easy to break in the knocking process, so that extra workload is brought.
Disclosure of Invention
In order to solve present hood head and hood and take over welding installation work load big, dismantle and change the difficulty, cause the problem of damage to the hood easily, the utility model provides a hood mounting structure for circulating fluidized bed boiler, it can reduce installation work load, and it is simple to dismantle and change, can not cause the damage to the hood.
The technical scheme is as follows: the blast cap mounting structure for the circulating fluidized bed boiler comprises a blast cap connecting pipe mounted on an air distribution plate, wherein a blast cap head is mounted on the blast cap connecting pipe, and is characterized in that first through holes are formed in two sides of the side wall of the lower portion of the blast cap head, second through holes matched with the first through holes are formed in the blast cap connecting pipe, the blast cap head is sleeved on the blast cap connecting pipe and fixed by pin shafts inserted into the first through holes and the second through holes, and a circular retaining ring is sleeved on the outer ring of the lower portion of the blast cap head.
The pin shaft is further characterized in that the pin shaft is in clearance fit with the first through hole and the second through hole;
the annular retainer ring is in clearance fit with the outer wall of the lower part of the blast cap head.
Adopt the utility model discloses afterwards, with the first through-hole of hood head and the second through-hole alignment back that the hood was taken over during on-the-spot installation, penetrate the round pin axle again, simple to operate, location are accurate, have avoided a large amount of weldment work, and the rethread ring retaining ring can avoid in the operation round pin axle to take place to drop and the fixed shakiness of hood head that arouses drops, as long as mention the ring retaining ring and can withdraw from round pin axle 4 in the maintenance, the hood head can conveniently be taken off, need not to polish and strikes, avoids damaging the hood.
Drawings
FIG. 1 is a schematic diagram of a prior art structure;
FIG. 2 is a schematic view of the present invention;
FIG. 3 is a schematic view of a blast cap adapter;
FIG. 4 is a schematic view of a hood head;
fig. 5 is a schematic view of the annular retainer ring.
Detailed Description
Referring to fig. 2 to 5, the hood mounting structure for the circulating fluidized bed boiler comprises a hood connecting pipe 2 mounted on a wind distribution plate 1, a hood head 3 is mounted on the hood connecting pipe 2, first through holes 3-1 are formed in two sides of the lower side wall of the hood head 3, second through holes 2-1 matched with the first through holes 3-1 are formed in the hood connecting pipe 2, the hood head 3 is sleeved on the hood connecting pipe 2 and is fixed by pin shafts 4 inserted into the first through holes 3-1 and the second through holes 2-1, a ring retainer ring 5 is sleeved on the outer ring of the lower portion of the hood head 3, the pin shafts 4 are in clearance fit with the first through holes 3-1 and the second through holes 2-1, and the ring retainer ring 5 is in clearance fit with the outer wall of the lower portion of the hood head 3.
When the wind cap is installed, the circular retaining ring 5 is firstly sleeved at the bottom of the wind cap head 3 and then assembled with the wind cap connecting pipe 2, when the pin shaft 4 is installed, the circular retaining ring 5 needs to be lifted, then the circular retaining ring passes through the first through hole 3-1 and the second through hole 2-1, and then the circular retaining ring 5 is put down, the pin shaft 4 is blocked by the circular retaining ring 5, and the wind cap head 3 falls off due to looseness of the house pin shaft 4. The ring retainer ring 5 can freely move up and down at the root of the blast cap head 3, and the pin shaft 4 can be prevented from falling off at the bottom by the dead weight, so that the self-locking function is realized. When the hood is disassembled and replaced, the circular ring retainer ring 5 is lifted firstly, the pin shaft 4 is ejected out by the ejector pin, the hood head 3 can be disassembled, and the operation is simple and convenient.
Claims (3)
1. The utility model provides an air cap mounting structure for circulating fluidized bed boiler, its is including installing the air cap takeover on the grid plate, install the air cap head on the air cap takeover, its characterized in that, first through-hole has been seted up to air cap head lower part lateral wall both sides, set up on the air cap takeover with first through-hole complex second through-hole, the air cap headgear adorn in on the air cap takeover and by inserting the round pin axle of first through-hole, second through-hole will the air cap head is fixed, air cap head lower part outer lane cover is equipped with the ring retaining ring.
2. The hood mounting structure for a circulating fluidized bed boiler of claim 1, wherein the pin is clearance-fitted to the first and second through holes.
3. The hood mounting structure for a circulating fluidized bed boiler of claim 1, wherein the annular retainer ring is clearance-fitted to a lower outer wall of the hood head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223254240.3U CN218763374U (en) | 2022-12-06 | 2022-12-06 | A hood mounting structure for circulating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223254240.3U CN218763374U (en) | 2022-12-06 | 2022-12-06 | A hood mounting structure for circulating fluidized bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218763374U true CN218763374U (en) | 2023-03-28 |
Family
ID=85680884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223254240.3U Active CN218763374U (en) | 2022-12-06 | 2022-12-06 | A hood mounting structure for circulating fluidized bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218763374U (en) |
-
2022
- 2022-12-06 CN CN202223254240.3U patent/CN218763374U/en active Active
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