CN203036617U - Furnace top sealing structure - Google Patents
Furnace top sealing structure Download PDFInfo
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- CN203036617U CN203036617U CN2012207244200U CN201220724420U CN203036617U CN 203036617 U CN203036617 U CN 203036617U CN 2012207244200 U CN2012207244200 U CN 2012207244200U CN 201220724420 U CN201220724420 U CN 201220724420U CN 203036617 U CN203036617 U CN 203036617U
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- sealing structure
- ceramic fiber
- stainless steel
- nickel chromium
- chromium manganese
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Abstract
The utility model discloses a furnace top sealing structure. The furnace top sealing structure comprises at least three ceramic fiber layers, a nickel chromium manganese steel mesh, stainless steel nails, fixing components and micro-expansion plastering materials, wherein the ceramic fiber layers are covered on a metal sealing layer of a furnace top, the nickel chromium manganese steel mesh is covered on the outermost ceramic fiber layer, the stainless steel nails with bottoms fixed with the metal sealing layer penetrate through the nickel chromium manganese steel mesh and the ceramic fiber layers, the fixing components are fixedly sleeved at the top of the stainless steel nails and used for tightly pressing the nickel chromium manganese steel mesh, and the micro-expansion plastering materials are coated on the nickel chromium manganese steel mesh. In the furnace top sealing structure, the ceramic fiber layers are covered on the furnace top, tightly pressed by the nickel chromium manganese steel mesh, the stainless steel nails and the fixing components and made of flexible materials, so that expansion of a furnace is absorbed multi-dimensionally and dynamically, but not suppressed rigidly, and the ceramic fiber layers cannot generate destructive stress and further cannot be cracked and gaped. Compared with the prior art, the furnace top sealing structure is more reliable in sealability and higher in strength, and more effectively decreases probability of air and ash leakage.
Description
Technical field
The utility model relates to technical field of sealing technology, particularly a kind of boiler roof sealing structure.
Background technology
The boiler of power plant ubiquity grey problem of leaking out, the generation for the grey problem of leaking out that prevents boiler of power plant need seal setting to the boiler furnace roof.
Existing a kind of hermetically-sealed construction is: at furnace roof three-layer sealed structure is set, is respectively alumina-silicate refractory fibre blanket, insulated pouring material from the inside to the outside and wipes one's face.Above-mentioned hermetically-sealed construction is rigid seal, can not expand with the thermal expansion of boiler effectively, can only contain the expansion of boiler rigidly, but the difference of being heated of body of heater each several part causes relatively hot swell increment difference, and the expansion of body of heater is the expansion of multi-dimensional direction, and this just causes existing hermetically-sealed construction under the situation of long alternating thermal stress and unbalance stress, the gap occurs, sealing descends, and the grey phenomenon of leaking out still exists.
In addition, poor because of the sealing effectiveness of existing hermetically-sealed construction, cause leaking grey air leakage phenomena and take place frequently, the normal operation of boiler is impacted, maintenance period is short, has increased maintenance workload.
In sum, how improving the reliability of boiler roof sealing and the intensity of hermetically-sealed construction, reduce the boiler grey phenomenon odds that leaks out, is those skilled in the art's problem demanding prompt solutions.
The utility model content
In view of this, the purpose of this utility model is to provide a kind of boiler roof sealing structure, with the reliability that improves boiler roof sealing and the intensity of hermetically-sealed construction, reduces the boiler grey phenomenon odds that leaks out.
For achieving the above object, the utility model provides following technical scheme:
A kind of boiler roof sealing structure comprises:
Cover at least three layers of ceramic fiber layer on the metal sealant of furnace roof;
Cover the nickel chromium manganese steel net on the described ceramic fiber layer of outermost layer;
Pass the fixing stainless steel nail of described nickel chromium manganese steel net and described ceramic fiber layer and bottom and described metal sealant;
Be fixed in described stainless steel screw top portion, be used for compressing the fixation kit of described nickel chromium manganese steel net;
Be coated in the online microdilatancy of the described nickel chromium manganese steel material of wiping one's face.
Preferably, in the above-mentioned boiler roof sealing structure, it is bonding to pass through high-temperature adhesives between each described ceramic fiber layer and between described ceramic fiber layer and the metal sealant.
Preferably, in the above-mentioned boiler roof sealing structure, the coating thickness of described high-temperature adhesives is 1mm-3mm.
Preferably, in the above-mentioned boiler roof sealing structure, the number of plies of described ceramic fiber layer is three layers;
Wherein, the thickness of outermost layer and innermost layer is 20mm-30mm; The thickness in intermediate layer is 10mm-15mm.
Preferably, in the above-mentioned boiler roof sealing structure, described fixation kit comprises elasticity check snap ring and is used for being fixed on the circular gasket that described stainless steel nails on.
Preferably, in the above-mentioned boiler roof sealing structure, the bottom of described stainless steel nail and the welding of described metal sealant are fixing.
Preferably, in the above-mentioned boiler roof sealing structure, the staggered installation of the described stainless steel nail of adjacent two rows, and the spacing of described stainless steel nail is 200mm-250mm.
Preferably, in the above-mentioned boiler roof sealing structure, described boiler roof sealing structure is respectively extended about 250mm on the left and right sides horizontal direction of vertical wall pipe.
Compared with prior art, the beneficial effects of the utility model are:
In the boiler roof sealing structure that the utility model provides; cover at least three layers of ceramic fiber layer at furnace roof; and compress ceramic fiber layer with the nickel chromium manganese steel net; use stainless steel nail and fixation kit that nickel chromium manganese steel net and ceramic fiber layer are fixed on the furnace roof; by apply one deck microdilatancy material of wiping one's face on the net at nickel chromium manganese steel; the destruction that the protection hermetically-sealed construction is not subjected to external environment condition; because ceramic fiber layer is flexible material; can in the nickel chromium manganese steel net, dynamically absorb to multidimensional the expansion of boiler; rather than rigid contain expansion; therefore ceramic fiber layer can not produce the alternating thermal stress of rigidity because of self-deformation; the more not gap that can occur ftractureing and leak point; sealing than existing hermetically-sealed construction is more reliable, and intensity is higher, has more effectively reduced the possibility that the grey phenomenon of leaking out takes place.
In addition, because boiler roof sealing structural reliability height of the present utility model, the structural strength height, the leak out possibility of grey phenomenon of boiler is very little, so effectively improved the efficient of boiler operatiopn, reduce repairing workload after having an accident and the workload of maintenance, saved recondition expense, improved the working environment of maintenance.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or scheme of the prior art, to do simple the introduction to the accompanying drawing of describing required use in embodiment or the prior art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those skilled in the art, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
A kind of boiler roof sealing structural representation that Fig. 1 provides for the utility model embodiment;
The layer structure schematic diagram of a kind of boiler roof sealing structure that Fig. 2 provides for the utility model embodiment;
Fig. 3 is the vertical view of Fig. 2.
Among above-mentioned Fig. 1-Fig. 3, nickel chromium manganese steel net 1, ceramic fiber layer 2, vertical wall pipe 3, stainless steel nail 4, metal sealant 5, fixation kit 6, elasticity check snap ring 601, circular gasket 602, high-temperature adhesives 7, stainless steel wire 8.
The specific embodiment
The utility model provides a kind of boiler roof sealing structure, has improved the reliability of boiler roof sealing and the intensity of hermetically-sealed construction, has reduced the boiler grey odds that leaks out.
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is a part of embodiment of the present utility model, rather than whole embodiment.Based on embodiment of the present utility model, all other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work belong to the scope that the utility model is protected.
Please refer to Fig. 1-Fig. 3, a kind of boiler roof sealing structural representation that Fig. 1 provides for the utility model embodiment; The layer structure schematic diagram of a kind of boiler roof sealing structure that Fig. 2 provides for the utility model embodiment; Fig. 3 is the vertical view of Fig. 2.
The boiler roof sealing structure that the utility model embodiment provides comprises ceramic fiber layer 2, nickel chromium manganese steel net 1, stainless steel nail 4, fixation kit 6 and the microdilatancy material of wiping one's face; Wherein, ceramic fiber layer 2 covers on the metal sealant 5 of furnace roof, and lays three layers at least; Nickel chromium manganese steel net 1 covers on the outermost ceramic fiber layer 2; Stainless steel nail 4 interts in nickel chromium manganese steel net 1 and ceramic fiber layer 2, and bottom and metal sealant 5 is fixing; Fixation kit 6 is enclosed within the top of stainless steel nail 4, and nickel chromium manganese steel net 1 is pressed on the ceramic fiber layer 2, and then whole hermetically-sealed construction is fixed on the furnace roof, fixation kit 6 is fixed on the stainless steel nail 4 afterwards; Apply one deck microdilatancy material of wiping one's face at nickel chromium manganese steel net 1, form containment vessel, play the effect of protecting whole hermetically-sealed construction.
The sealing principle of above-mentioned boiler roof sealing structure is: ceramic fiber layer 2 and the grey position of leaking out of furnace roof are close to, by nickel chromium manganese steel net 1, stainless steel nail 4 and fixation kit 6 are pressed on ceramic fiber layer 2 on the furnace roof, when furnace roof leaks out grey position when thermal expansion unevenly takes place, because the flexibility of ceramic fiber layer 2, plastic deformation can correspondingly take place along with the expansion of furnace roof in ceramic fiber layer 2, can dynamically absorb the expansion of furnace roof from a plurality of directions, rather than rigid the furnace roof of containing expands, therefore, ceramic fiber layer 2 can not produce the alternating thermal stress of rigidity, and then the cracking of hermetically-sealed construction can not take place, strengthen the intensity of hermetically-sealed construction, thereby reduced the possibility that the grey phenomenon of leaking out takes place; Adopting nickel chromium manganese steel net 1 is because it is the high temperature resistant stainless steel material as compacting part, can be because of particular job environment of boiler premature aging; Adopt ceramic fiber layer 2 to be because it is high temperature resistant, the quality softness meets the requirement that dynamic absorption is expanded; Smearing one deck microdilatancy material of wiping one's face is in order to protect the boiler roof sealing structure not to be subjected to outside destruction, and is ductile, can be because of boiler expansion cracking voluntarily.
Further optimize above-mentioned boiler roof sealing structure, smearing high-temperature adhesives 7 between every layer of ceramic fiber layer 2 and between innermost layer ceramic fiber layer 2 and the metal sealant 5, it is bonded together each other, form a sealing and firm integral body.
As optimization, the coating thickness of above-mentioned high-temperature adhesives 7 is 1mm-3mm, generally gets about 2mm.
In order to guarantee sealing effectiveness, the utility model embodiment arranges three layers of ceramic fiber layer 2, and the thickness of outermost layer and innermost layer is 20mm-30mm, is preferably 25mm, and the thickness in intermediate layer is 10mm-15mm, is preferably 13mm; For the more serious position of ash of leaking out, can also increase the number of plies and the thickness of ceramic fiber layer 2.
Fixation kit 6 among the utility model embodiment is preferably: comprise elasticity check snap ring 601 and circular gasket 602; The effect of elasticity check snap ring 601 is to be enclosed within on the stainless steel nail 4, blocks and compress the grid of nickel chromium manganese steel net 1, does not allow it pass stainless steel nail 4; Circular gasket 602 is above elasticity check snap ring 601, and is and fixing with 4 welding of stainless steel nail, is used for stoping elasticity check snap ring 602 to break away from stainless steel nail 4; The shape of elasticity check snap ring 601 is optimized for square, certainly, can also be other shapes.
Fixing for welding between the bottom of above-mentioned stainless steel nail 4 and the metal sealant 5, in addition, can also be powerful bonding etc.
For with the boiler roof sealing sound construction be fixed on the furnace roof, adopt a plurality of stainless steel nails 4, the staggered installation between the stainless steel nail 4 of adjacent two rows, and the spacing of the stainless steel nail 4 among each row is 200mm-250mm, the length of stainless steel nail 4 is generally about 100mm, according to the difference of installation site, can correspondingly cut off the partial-length of the stainless steel nail 4 of this position, to reach suitable length.
The vertical cross-section of the boiler roof sealing structure that the utility model embodiment provides is shaped as taper, because the boiler roof sealing structure is mounted on the furnace roof, a lot of vertical wall pipes 3 are arranged on the furnace roof, hermetically-sealed construction need with the tube wall of vertical wall pipe 3 and roof tube base bond together, form an integral body, from the appearance, the boiler roof sealing structure is made up of a plurality of three-dimensional bullets; In order to increase the contact area on boiler roof sealing structure and tube wall and roof tube basis, make it be fixed on the furnace roof more firmly, boiler roof sealing structure among the utility model embodiment is extended to the left and right sides of vertical wall pipe 3 from the top of taper, and respectively extend in the horizontal direction about 250mm, namely the width of boiler roof sealing structure is about 500mm.
The theoretical swell increment of the boiler that above-mentioned boiler roof sealing structure can absorb is about 75mm.
The part that is connected with vertical wall pipe 3 in the boiler roof sealing structure uses stainless steel wire 8 that nickel chromium manganese steel net 1 is banded on the vertical wall pipe 3, and the boiler roof sealing structure is fixed on the furnace roof more firmly.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments herein.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the wideest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. a boiler roof sealing structure is characterized in that, comprising:
Cover at least three layers of ceramic fiber layer (2) on the metal sealant (5) of furnace roof;
Cover the nickel chromium manganese steel net (1) on the described ceramic fiber layer of outermost layer (2);
Pass the fixing stainless steel nail (4) of described nickel chromium manganese steel net (1) and described ceramic fiber layer (2) and bottom and described metal sealant (5);
Be fixed in described stainless steel nail (4) top, be used for compressing the fixation kit (6) of described nickel chromium manganese steel net (1);
Be coated in microdilatancy on the described nickel chromium manganese steel net (1) material of wiping one's face.
2. according to the described boiler roof sealing structure of claim 1, it is characterized in that it is bonding to pass through high-temperature adhesives (7) between each described ceramic fiber layer (2) and between described ceramic fiber layer (2) and the metal sealant (5).
3. according to the described boiler roof sealing structure of claim 2, it is characterized in that the coating thickness of described high-temperature adhesives (7) is 1mm-3mm.
4. according to the described boiler roof sealing structure of claim 1, it is characterized in that the number of plies of described ceramic fiber layer (2) is three layers;
Wherein, the thickness of outermost layer and innermost layer is 20mm-30mm; The thickness in intermediate layer is 10mm-15mm.
5. according to the described boiler roof sealing structure of claim 1, it is characterized in that described fixation kit (6) comprises elasticity check snap ring (601) and is used for being fixed on circular gasket (602) on the described stainless steel nail (4).
6. according to the described boiler roof sealing structure of claim 1, it is characterized in that the bottom of described stainless steel nail (4) and described metal sealant (5) welding are fixing.
7. according to the described boiler roof sealing structure of claim 1, it is characterized in that, the staggered installation of the adjacent two described stainless steel nails of row (4), and the spacing of described stainless steel nail (4) is 200mm-250mm.
8. according to the described boiler roof sealing structure of claim 1, it is characterized in that described boiler roof sealing structure is respectively extended about 250mm on the left and right sides horizontal direction of vertical wall pipe (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207244200U CN203036617U (en) | 2012-12-25 | 2012-12-25 | Furnace top sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207244200U CN203036617U (en) | 2012-12-25 | 2012-12-25 | Furnace top sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203036617U true CN203036617U (en) | 2013-07-03 |
Family
ID=48688736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207244200U Expired - Lifetime CN203036617U (en) | 2012-12-25 | 2012-12-25 | Furnace top sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203036617U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104406154A (en) * | 2014-11-25 | 2015-03-11 | 上海岱山电力安装工程有限公司 | Furnace top leakproof sealing technology with multi-directional stress absorbing function |
| CN107796000A (en) * | 2017-11-29 | 2018-03-13 | 北京神雾电力科技有限公司 | A kind of furnace roof access cover for possessing seal and heat insulating ability |
| CN112856476A (en) * | 2021-01-28 | 2021-05-28 | 中国华冶科工集团有限公司 | Boiler top sealing and heat preservation construction method |
-
2012
- 2012-12-25 CN CN2012207244200U patent/CN203036617U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104406154A (en) * | 2014-11-25 | 2015-03-11 | 上海岱山电力安装工程有限公司 | Furnace top leakproof sealing technology with multi-directional stress absorbing function |
| CN104406154B (en) * | 2014-11-25 | 2016-03-30 | 上海岱山电力安装工程有限公司 | A kind of have the furnace roof leak-proof sealing device absorbing multi-faceted stress function |
| CN107796000A (en) * | 2017-11-29 | 2018-03-13 | 北京神雾电力科技有限公司 | A kind of furnace roof access cover for possessing seal and heat insulating ability |
| CN112856476A (en) * | 2021-01-28 | 2021-05-28 | 中国华冶科工集团有限公司 | Boiler top sealing and heat preservation construction method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130703 |
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| CX01 | Expiry of patent term |