CN210398875U - Boiler water-cooled wall elbow sealing mechanism - Google Patents
Boiler water-cooled wall elbow sealing mechanism Download PDFInfo
- Publication number
- CN210398875U CN210398875U CN201920656298.XU CN201920656298U CN210398875U CN 210398875 U CN210398875 U CN 210398875U CN 201920656298 U CN201920656298 U CN 201920656298U CN 210398875 U CN210398875 U CN 210398875U
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- China
- Prior art keywords
- access hole
- sealing
- boiler
- wall
- steel plate
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- Expired - Fee Related
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Abstract
The utility model relates to a boiler water-cooling wall return bend sealing mechanism. The furnace comprises a furnace body, wherein the inner wall of the furnace body is a water-cooled wall, and the water-cooled wall is composed of vertical pipes uniformly distributed around the inner wall of the furnace body. The fire facing surface of the vertical tube is provided with a surfacing layer. The furnace body is provided with an access hole, the outer side of the access hole is provided with a sealing cover, and a fireproof heat-insulating material is arranged in the sealing cover. The access hole is located between two corresponding risers, wherein, two risers all towards the lateral buckling of keeping away from the access hole with one section that the access hole is corresponding to all form the bending section that is used for dodging the access hole of mutual symmetry on two risers of neighbouring access hole. The method is characterized in that: and sealing steel plates are arranged between the bending sections on two sides of the same access hole. The shape of the sealing steel plate is the same as the area shape surrounded by the outer sides of the two bending sections, a surfacing layer is arranged on the fire facing surface of the sealing steel plate, and a round hole is formed in the center of the sealing steel plate. Adopt the utility model discloses, can avoid the bending section impaired, reduce boiler maintenance rate, reduce the maintenance cost. The bent pipe suitable for the boiler access hole is prevented from being corroded.
Description
Technical Field
The utility model relates to a sealing mechanism. In particular to a sealing mechanism for protecting a bent pipe at a boiler access hole from being corroded, which is particularly suitable for boilers for generating electricity by burning garbage.
Background
As known in the boiler production industry, waste heat boilers for generating electricity by incinerating garbage are all water-cooled wall boilers. The inner wall of the furnace body is a water-cooled wall which is composed of vertical pipes uniformly distributed along the periphery of the inner wall of the furnace body. And surfacing layers are arranged on the fire facing surfaces of the vertical pipes. The furnace body is provided with an access hole, the outer side of the access hole is provided with a sealing cover, and the sealing cover is made of a fireproof heat-insulating material. The access hole is located between two corresponding risers, wherein, two risers all towards the lateral buckling of keeping away from the access hole with one section that the access hole is corresponding to all form the bending section that is used for dodging the access hole of mutual symmetry on two risers of neighbouring access hole. Because only be provided with sealed housing outside the manhole, in the boiler operation in-process, the erodeing of flue gas can lead to the non-fire face of bending section promptly not having the drop of one side insulation material of build-up welding layer, makes the non-fire face of bending section receive corrosive gas's corruption for the bending section is impaired easily. Once the bent section is damaged, the boiler needs to be shut down for maintenance. The maintenance rate of the boiler is high, and the maintenance cost is increased.
SUMMERY OF THE UTILITY MODEL
The to-be-solved problem of the utility model is to provide a boiler water wall return bend sealing mechanism. By adopting the sealing mechanism, the damage of the bending section can be avoided, the maintenance rate of the boiler is reduced, and the maintenance cost is reduced.
The utility model discloses the above-mentioned problem that solves is realized by following technical scheme:
the utility model discloses a boiler water wall return bend sealing mechanism, including the furnace body, the furnace body inner wall is the water-cooling wall, and this water-cooling wall comprises the standpipe along furnace body inner wall equipartition all around. And surfacing layers are arranged on the fire facing surfaces of the vertical pipes. The furnace body is provided with an access hole, the outer side of the access hole is provided with a sealing cover, and a fireproof heat-insulating material is arranged in the sealing cover. The access hole is located between two corresponding risers, wherein, two risers all towards the lateral buckling of keeping away from the access hole with one section that the access hole is corresponding to all form the bending section that is used for dodging the access hole of mutual symmetry on two risers of neighbouring access hole. The method is characterized in that: and sealing steel plates are arranged between the bending sections on two sides of the same access hole. The shape of the sealing steel plate is the same as the area shape surrounded by the outer sides of the two bending sections, a surfacing layer is arranged on the fire facing surface of the sealing steel plate, and a round hole is formed in the center of the sealing steel plate.
According to the scheme, the sealing steel plates are arranged between the bent sections of the vertical pipes on two sides of the same access hole, the shape of each sealing steel plate is the same as the shape of the area enclosed by the two bent sections, and the surfacing layers are welded on the fire facing surfaces of the sealing steel plates. Utilize sealed steel sheet, when the non-face of putting on fire that does not have the resurfacing welding layer promptly of standpipe bending segment of manhole both sides protected, also made the inboard fire-resistant insulation material of sealed housing and strengthened to avoided leading to the non-face of putting on fire of bending segment to have droing of one side fire-resistant insulation material of resurfacing welding layer promptly because the erodeing of flue gas, avoided the non-face of putting on fire of bending segment to receive the condition emergence of corrosive gas corrosion, makeed the bending segment be difficult for impaired. Thus, the number of times of shutdown maintenance of the boiler is reduced. Thereby reducing the maintenance rate of the boiler and reducing the maintenance cost.
Drawings
Fig. 1 is a schematic view of the boiler water wall elbow sealing mechanism of the utility model. The sealing shroud and refractory insulation are removed for clarity.
Fig. 2 is a schematic sectional view a-a of fig. 1.
Detailed Description
As shown in figure 1 and figure 2, the utility model discloses a boiler water wall return bend sealing mechanism includes the furnace body, and the furnace body inner wall is the water-cooling wall. The water-cooled wall is composed of vertical pipes 1 uniformly distributed along the periphery of the inner wall of the furnace body. The fire facing surface of the vertical tube 1 contains a surfacing layer 5. The furnace body is provided with an access hole 4, the outer side of the access hole 4 is provided with a sealing housing 7, and a fireproof heat-insulating material 6 is arranged in the sealing housing 7. The manhole 4 is located between two corresponding risers 1, wherein, one section that two risers 1 and manhole 4 are corresponding all towards the lateral buckling of keeping away from manhole 4 to all form the bending section 2 that is used for dodging manhole 4 of mutual symmetry on two risers 1 of neighbouring manhole 4. And sealing steel plates 3 are arranged between the bending sections 2 at two sides of the same access hole 4. The shape of the sealing steel plate 3 is the same as the area shape surrounded by the outer sides of the two bending sections 2, a surfacing layer is welded on the fire facing surface of the sealing steel plate, and a round hole 4 is processed in the center of the sealing steel plate.
The surfacing layer is a nickel-based alloy surfacing layer, and the thickness of the surfacing layer is generally not less than 2 mm. In this embodiment, the thickness of the overlay is 2.1 mm.
Claims (4)
1. The boiler water wall elbow sealing mechanism comprises a boiler body, wherein the inner wall of the boiler body is a water wall which is composed of vertical pipes uniformly distributed along the periphery of the inner wall of the boiler body; surfacing layers are arranged on the fire facing surfaces of the vertical pipes; the furnace body is provided with an access hole, the outer side of the access hole is provided with a sealing cover, and a refractory heat-insulating material is arranged in the sealing cover; the access hole is positioned between the two corresponding vertical pipes, wherein the sections of the two vertical pipes corresponding to the access hole are bent towards one side far away from the access hole, so that mutually symmetrical bent sections for avoiding the access hole are formed on the two vertical pipes adjacent to the access hole; the method is characterized in that: sealing steel plates are arranged between the bending sections on the two sides of the same access hole; the shape of the sealing steel plate is the same as the area shape surrounded by the outer sides of the two bending sections, a surfacing layer is arranged on the fire facing surface of the sealing steel plate, and a round hole is formed in the center of the sealing steel plate.
2. The boiler water wall elbow sealing mechanism of claim 1, characterized in that: the surfacing layer is a nickel-based alloy surfacing layer.
3. The boiler water wall elbow sealing mechanism of claim 1 or 2, characterized in that: the thickness of the overlaying layer is not less than 2 mm.
4. The boiler water wall elbow sealing mechanism of claim 1 or 2, characterized in that: the thickness of the surfacing layer is 2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920656298.XU CN210398875U (en) | 2019-05-09 | 2019-05-09 | Boiler water-cooled wall elbow sealing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920656298.XU CN210398875U (en) | 2019-05-09 | 2019-05-09 | Boiler water-cooled wall elbow sealing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210398875U true CN210398875U (en) | 2020-04-24 |
Family
ID=70345423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920656298.XU Expired - Fee Related CN210398875U (en) | 2019-05-09 | 2019-05-09 | Boiler water-cooled wall elbow sealing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210398875U (en) |
-
2019
- 2019-05-09 CN CN201920656298.XU patent/CN210398875U/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 |
Granted publication date: 20200424 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |