CN213746714U - Fireproof heat preservation device for slag discharge pipe of fluidized bed - Google Patents
Fireproof heat preservation device for slag discharge pipe of fluidized bed Download PDFInfo
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- CN213746714U CN213746714U CN202022452091.6U CN202022452091U CN213746714U CN 213746714 U CN213746714 U CN 213746714U CN 202022452091 U CN202022452091 U CN 202022452091U CN 213746714 U CN213746714 U CN 213746714U
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Abstract
The utility model discloses a fire-resistant heat preservation device of sediment pipe under fluidized bed, it includes sediment pipe down, the sediment pipe passes through from the plenum down, be provided with the stainless steel ring, each along the length direction interval on the sediment outside of tubes surface down be provided with the claw nail along the circumference interval on the stainless steel ring, wrap up sediment pipe and stainless steel ring have set gradually the heat preservation that comprises aluminum silicate plate and the flame retardant coating that comprises the fire-resistant sheath brick down, the claw nail runs through heat preservation and tip are located in the flame retardant coating. The utility model discloses at the 304 rings of sediment pipe outer wall welding stainless steel down, the claw nail is welded to the ring, holds fire-resistant sheath brick, for reducing unloading pipe and plenum difference in temperature, places aluminum silicate plate between sediment pipe shell and fire-resistant sheath down, makes sediment pipe sheath use more than 5 years.
Description
The technical field is as follows:
the utility model relates to a protection of a slag discharging pipe of a fluidized bed, in particular to a fireproof and heat-preservation device of the slag discharging pipe of the fluidized bed.
Background art:
at present, the temperature of a hearth of a circulating fluidized bed boiler is about 950 ℃, a fluidized bed slag discharging pipe passes through an air chamber, and because the slag discharging pipe is high in temperature and cold air is arranged outside the pipe wall, the temperature difference between the slag discharging pipe and the pipe wall easily causes the explosion and the falling of a fireproof protective sleeve, so that the slag discharging pipe is damaged, the normal work is influenced, the slag discharging pipe needs to be replaced when the temperature is serious, the production stop time is longer, and the production cost is increased.
The utility model has the following contents:
the utility model discloses the technical problem that will solve is: overcomes the defects of the prior art, and provides the fluidized bed slag discharging pipe fireproof heat preservation device which has reasonable design, good grabbing and fixing effect and long service life.
The technical scheme of the utility model is that:
the utility model provides a fire-resistant heat preservation device of sediment pipe under fluidized bed, includes sediment pipe down, the sediment pipe passes through from the plenum down, be provided with the stainless steel ring along the length direction interval on the sediment outside of tubes surface down, each be provided with the claw nail along the circumference interval on the stainless steel ring, the parcel sediment pipe and stainless steel ring have set gradually the heat preservation that constitutes by aluminum silicate plate and the flame retardant coating that constitutes by the fire-resistant sheath brick down, the claw nail runs through heat preservation and tip are located in the flame retardant coating.
The end part of the claw nail is provided with a bending part which is fixedly hooked with the fireproof sheath brick, and the bending part is L-shaped or T-shaped.
The stainless steel ring is formed by surrounding a stainless steel strip, and the stainless steel ring is welded and fixed with the slag discharging pipe; the refractory sheath bricks are mutually staggered and built to form the refractory layer.
The utility model has the advantages that:
1. the utility model discloses at the 304 rings of sediment pipe outer wall welding stainless steel down, the claw nail is welded to the ring, holds fire-resistant sheath brick, for reducing unloading pipe and plenum difference in temperature, places aluminum silicate plate between sediment pipe shell and fire-resistant sheath down, makes sediment pipe sheath use more than 5 years.
2. The utility model discloses the outer end of claw nail is provided with the flexion, can be better combine with the refractory sheath brick, improve the bonding strength of the two.
3. The utility model discloses set up aluminum silicate plate between lower sediment pipe and fire-resistant sheath brick, the heat preservation effect is better, prevents effectively that the inside high temperature of sediment pipe from passing to the outside down, causes the lag to explode and splits.
4. The utility model relates to a rationally, grab solid effectual and long service life, easily promote the implementation, economic benefits is better.
Description of the drawings:
FIG. 1 is a schematic structural view of a refractory heat-insulating device of a slag-tapping pipe of a fluidized bed.
The specific implementation mode is as follows:
example (b): referring to fig. 1, in the figure, 1-wind chamber, 2-slag discharge pipe, 3-stainless steel ring, 4-aluminum silicate plate, 5-claw nail, 6-fire-resistant layer.
The fire-resistant heat preservation device of the slag pipe under the fluidized bed, including the slag pipe 2, the slag pipe 2 passes through from the plenum 1, wherein: the outer surface of the lower slag pipe 2 is provided with stainless steel rings 3 at intervals along the length direction, each stainless steel ring 3 is provided with claws 5 at intervals along the circumference, the wrapped lower slag pipe 2 and the stainless steel rings 3 are sequentially provided with a heat insulation layer consisting of aluminum silicate plates 4 and a fire-resistant layer 6 consisting of fire-resistant sheath bricks, and the claws 5 penetrate through the heat insulation layer and the end part is positioned in the fire-resistant layer 6.
The preferred scheme is as follows: the end of the claw nail 5 is provided with a bending part which is hooked and fixed with the refractory sheath brick, and the bending part is L-shaped or T-shaped. The stainless steel ring 3 is formed by surrounding a stainless steel strip, and the stainless steel ring 3 is welded and fixed with the slag discharging pipe 2; the refractory sheath bricks are mutually staggered and built to form a refractory layer 6.
The utility model discloses at the 304 rings of sediment pipe outer wall welding stainless steel down, the claw nail is welded to the ring, holds fire-resistant sheath brick, for reducing unloading pipe and plenum difference in temperature, places aluminum silicate plate between sediment pipe shell and fire-resistant sheath down, makes sediment pipe sheath use more than 5 years.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments still fall within the scope of the technical solution of the present invention.
Claims (3)
1. The utility model provides a fire-resistant heat preservation device of fluidized bed sediment pipe, includes the sediment pipe down, the sediment pipe passes through from the plenum, characterized by: the slag pipe is provided with the stainless steel ring along length direction interval on the outer surface of lower slag pipe, each be provided with the claw nail along the circumference interval on the stainless steel ring, the parcel slag pipe and stainless steel ring have set gradually the heat preservation that comprises aluminum silicate plate and the flame retardant coating that comprises the fire-resistant sheath brick down, the claw nail runs through heat preservation and tip are located in the flame retardant coating.
2. The refractory and thermal insulation device for the slag pipe of the fluidized bed as claimed in claim 1, wherein: the end part of the claw nail is provided with a bending part which is fixedly hooked with the fireproof sheath brick, and the bending part is L-shaped or T-shaped.
3. The refractory and thermal insulation device for the slag pipe of the fluidized bed as claimed in claim 1, wherein: the stainless steel ring is formed by surrounding a stainless steel strip, and the stainless steel ring is welded and fixed with the slag discharging pipe; the refractory sheath bricks are mutually staggered and built to form the refractory layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022452091.6U CN213746714U (en) | 2020-10-29 | 2020-10-29 | Fireproof heat preservation device for slag discharge pipe of fluidized bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022452091.6U CN213746714U (en) | 2020-10-29 | 2020-10-29 | Fireproof heat preservation device for slag discharge pipe of fluidized bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213746714U true CN213746714U (en) | 2021-07-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022452091.6U Active CN213746714U (en) | 2020-10-29 | 2020-10-29 | Fireproof heat preservation device for slag discharge pipe of fluidized bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213746714U (en) |
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2020
- 2020-10-29 CN CN202022452091.6U patent/CN213746714U/en active Active
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