CN212775996U - Waste heat boiler wall pipe sealing and heat insulating structure - Google Patents
Waste heat boiler wall pipe sealing and heat insulating structure Download PDFInfo
- Publication number
- CN212775996U CN212775996U CN202021355988.0U CN202021355988U CN212775996U CN 212775996 U CN212775996 U CN 212775996U CN 202021355988 U CN202021355988 U CN 202021355988U CN 212775996 U CN212775996 U CN 212775996U
- Authority
- CN
- China
- Prior art keywords
- wall
- penetrating pipe
- connecting sleeve
- waste heat
- boiler
- 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.)
- Active
Links
Images
Landscapes
- Thermal Insulation (AREA)
Abstract
The application relates to a sealing and heat-insulating structure of a waste heat boiler wall pipe, which belongs to the field of boilers and comprises a boiler wall of a boiler and the wall pipe, wherein a perforation is arranged on the boiler wall, the wall pipe penetrates through the perforation and then extends into a hearth of the boiler, the outer side of the furnace wall is provided with a connecting sleeve for sleeving the wall-through pipe in the inner part, the through hole is positioned in an inner hole of the connecting sleeve, connecting sleeve one end links to each other with the sealed fixed of brickwork, the wall pipe is located and is provided with the retaining ring on the body in the brickwork outside, the interval sets up between retaining ring and the connecting sleeve, be provided with between retaining ring and the connecting sleeve with the wall pipe enclose the tube-shape in inside and can extend the nonmetal covering of shrink between retaining ring and connecting sleeve, nonmetal covering respectively with between retaining ring and the connecting sleeve sealed fixed, the position outside that the wall pipe is located between connecting sleeve and the retaining ring is provided with the heat preservation. This application has the advantage that can strengthen wall pipe department leakproofness can satisfy the peak regulation operating mode of unit again.
Description
Technical Field
The application relates to the technical field of boilers, in particular to a waste heat boiler wall penetrating pipe sealing and heat insulating structure.
Background
The waste heat boiler wall pipe is the indispensable part of boiler design, because there is a large amount of high temperature flue gas in the waste heat boiler, and the heating surface pipeline can take place to stretch out and draw back because the cold and hot attitude change in the stove, leads to the interior high temperature pipeline of former stove can stretch out the furnace wall backplate.
Chinese patent with publication number CN207762444U discloses a waste heat boiler wall-penetrating pipeline metal expansion joint heat preservation structure, including outer casing and inner casing, outer casing and inner casing all set up the ring shape structure with the coaxial setting of metal expansion joint, form the heat preservation between outer casing and the inner casing, the inside insulation material that is provided with of heat preservation, the lower extreme of outer casing is provided with the annular linkage section i that turns up, the lower extreme of inner casing is provided with the annular linkage section ii that turns up, annular linkage section i, annular linkage section ii passes through bolt fixed connection with the brickwork body respectively.
Under the peak regulation working condition of the unit, the wall penetrating pipe is easy to lose effectiveness and damage under the frequent change of cold and hot states and loses the heat preservation and insulation effect. The existing external through-wall pipe of the furnace is lack of sealing and heat insulation structure, so that the high-frequency expansion of the pipeline cannot be effectively met, once the internal metal expansion joint corrugated pipe is damaged, high-temperature smoke can be leaked to cause overtemperature, the structural strength of the steel frame outside the furnace is seriously threatened, and the safety and stability of a unit are influenced.
SUMMERY OF THE UTILITY MODEL
To the not enough of prior art existence, the purpose of this application provides a waste heat boiler wall tube seals heat-insulating structure, and it has the advantage that can strengthen wall tube department leakproofness can satisfy the peak regulation operating mode of unit again.
The above utility model of this application aim at can realize through following technical scheme:
a waste heat boiler wall pipe sealing heat insulation structure comprises a boiler wall and a wall pipe of a boiler, wherein the boiler wall is provided with a through hole, the wall penetrating pipe penetrates through the through hole to extend into a hearth of the boiler, a connecting sleeve for sleeving the wall penetrating pipe inside is arranged on the outer side of the boiler wall, the through hole is positioned in the inner hole of the connecting sleeve, one end of the connecting sleeve is fixedly connected with the furnace wall in a sealing way, the pipe body of the wall penetrating pipe positioned at the outer side of the furnace wall is provided with a fixed ring, the fixed ring and the connecting sleeve are arranged at intervals, a cylindrical non-metal skin which surrounds the wall-penetrating pipe inside and can expand and contract between the fixed ring and the connecting sleeve is arranged between the fixed ring and the connecting sleeve, the nonmetal covering is respectively fixed with the fixed ring and the connecting sleeve in a sealing mode, and a heat preservation layer is arranged outside the portion, located between the connecting sleeve and the fixed ring, of the wall penetrating pipe.
Through adopting above-mentioned technical scheme, can extend the nonmetal covering of shrink through adopting between adapter sleeve and fixed ring, can effectual compensation poling pipe be at the poling pipe displacement volume that stretches out and draws back under the unit peak regulation operating mode, can reduce the condition that insulation construction appears damaging because of the pipeline frequently stretches out and draws back simultaneously, increased insulation construction's life.
The present application may be further configured in a preferred example to: and a heat preservation quilt is arranged between the connecting sleeve and the wall penetrating pipe.
Through adopting above-mentioned technical scheme, because adapter sleeve is located the one end department that is linked together inside wall pipe and furnace, thereby can completely cut off a large amount of heats through keeping warm by, prevent that the heat from the position between adapter sleeve and the wall pipe from flowing away.
The present application may be further configured in a preferred example to: and the outer side surface of the wall penetrating pipe is wound with heat insulation cloth, and the heat insulation cloth extends into the hearth of the boiler along with the wall penetrating pipe.
Through adopting above-mentioned technical scheme, thereby isolated wall pipe and heat preservation through thermal-insulated cloth to reduce the ambient temperature that the heat preservation is located, increase the life of heat preservation.
The present application may be further configured in a preferred example to: the both ends of non-metal covering are respectively the suit in the outside of connecting sleeve and fixed ring and tie up firmly through tightening up the ribbon.
Through adopting above-mentioned technical scheme, adopt to tighten up the ribbon and tie up admittedly to can guarantee the leakproofness between non-metallic cover and adapter sleeve and the fixed ring, when needs are dismantled non-metallic cover, loosen and tighten up the ribbon and can be with separation between non-metallic cover and adapter sleeve and the fixed ring simultaneously.
The present application may be further configured in a preferred example to: and the connecting sleeve is provided with an anti-falling structure for preventing the non-metal skin from falling off from the connecting sleeve.
By adopting the technical scheme, the condition that the nonmetal skin falls off from the connecting sleeve when the nonmetal skin is stretched after the nonmetal skin is used for a period of time is avoided.
The present application may be further configured in a preferred example to: the anti-falling structure is a check ring arranged at the bottom end of the outer side of the connecting sleeve.
Through adopting above-mentioned technical scheme, block tightening up the ribbon through the retaining ring to make and tighten up ribbon and non-metallic skin and can not follow the landing on the adapter sleeve.
The present application may be further configured in a preferred example to: the anti-disengaging structure is an annular groove arranged on the outer side surface of the connecting sleeve, and the width of the groove is larger than that of the tightening tie.
Through adopting above-mentioned technical scheme, when using to tighten up the ribbon and tie up admittedly to non-metal skin, will tighten up the ribbon and be relative with the position of slot, along with tightening up of tightening up the ribbon to make non-metal skin and the relative position of slot and tighten up the ribbon and imbed in the slot, thereby make non-metal skin and tighten up the ribbon and be difficult for landing downwards on adapter sleeve.
The present application may be further configured in a preferred example to: the fixed ring comprises at least two arc-shaped hoop sheets, the hoop sheets are enclosed into an annular structure which can be fixedly hooped on the wall penetrating pipe, and adjacent hoop sheets are fixed together through bolts.
Through adopting above-mentioned technical scheme, when overhauing, can dismantle fixed ring from the wall pipe.
The present application may be further configured in a preferred example to: the outside top of embrace hoop piece is provided with the boss, when tightening up the ribbon and tying up non-metallic skin admittedly on fixed ring, it is located the below of boss to tighten up the ribbon.
Through adopting above-mentioned technical scheme, when non-metallic skin extends, the boss can block and tighten up the ribbon, makes non-metallic skin be difficult for and fixed the phenomenon that takes place to break away from between the ring.
The present application may be further configured in a preferred example to: the heat-insulating layer is an aluminum silicate coiled felt wound on the wall penetrating pipe, and the aluminum silicate coiled felt is fixed on the wall penetrating pipe through a hoop.
Through adopting above-mentioned technical scheme, when carrying out the maintenance, be convenient for dismantle the heat preservation from the wall pipe.
In summary, the present application includes at least one of the following beneficial technical effects:
1. by adopting the non-metal skin capable of extending and contracting between the connecting sleeve and the fixed ring, the expansion displacement of the through-wall pipe under the peak regulation working condition of the unit can be effectively compensated, the damage of the heat insulation structure due to frequent expansion of the pipeline can be reduced, and the service life of the heat insulation structure is prolonged;
2. through set up anti-disengaging structure on adapter sleeve, avoid after using a period, cause the condition that non-metal covering drops from adapter sleeve when non-metal covering extends.
Drawings
FIG. 1 is a schematic structural view of example 1;
FIG. 2 is an enlarged partial schematic view of portion A of FIG. 1;
FIG. 3 is an exploded view of a fixed ring;
FIG. 4 is a schematic structural view of example 2;
fig. 5 is a partially enlarged schematic view of a portion B in fig. 4.
In the figure, 1, a furnace wall; 11. perforating; 2. a through-wall pipe; 3. high silica heat insulating cloth; 4. connecting a sleeve; 41. a retainer ring; 42. a trench; 5. a heat preservation quilt; 6. fixing the circular ring; 61. a hoop sheet; 62. a boss; 7. a non-metallic skin; 8. tightening the binding belt; 9. and (7) an insulating layer.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
Referring to fig. 1, the waste heat boiler wall tube sealing and heat insulating structure disclosed by the application comprises a boiler wall 1 and a wall tube 2. The furnace wall 1 is provided with a through hole 11 for the through-wall pipe 2 to pass through, and the aperture of the through hole 11 is larger than the outer diameter of the through-wall pipe 2. One end of the wall penetrating pipe 2 penetrates through the through hole 11 to extend into the interior of the furnace of the boiler, and the other end of the wall penetrating pipe 2 is positioned outside the furnace wall 1.
The outer surface that is located wall pipe 2 wraps up comprehensively has high silica heat insulating cloth 3, and high silica heat insulating cloth 3 twines in the outside of wall pipe 2 and fixes on wall pipe 2 through a plurality of staple bolts. The high silica heat insulation cloth 3 wrapped on the wall penetrating pipe 2 passes through the through hole 11 along with the wall penetrating pipe 2 so as to extend into the interior of the hearth.
The outer side surface of the furnace wall 1 is provided with a connecting sleeve 4 which is coaxially arranged with the wall penetrating pipe 2, and the wall penetrating pipe 2 penetrates through an inner hole of the connecting sleeve 4 and is coaxially arranged between the wall penetrating pipe 2 and the connecting sleeve 4. The end of the connecting sleeve 4 facing the furnace wall 1 is welded and fixed with the furnace wall 1, and the welding mode adopts a full-length welding mode, so that the sealing performance between the connecting sleeve 4 and the furnace wall 1 is ensured. The inner hole diameter of the connecting sleeve 4 is larger than the outer diameter of the through-wall pipe 2 and the hole diameter of the through hole 11, and the connecting sleeve 4 encloses the through-wall pipe 2 and the through hole 11 in the inner hole of the connecting sleeve 4. And a heat preservation quilt 5 is filled between the connecting sleeve 4 and the through-wall pipe 2.
The wall pipe 2 is provided with a fixed ring 6 on the pipe body outside the furnace wall 1, and the fixed ring 6 is fixed outside the wall pipe 2. The fixing rings 6 and the connecting sleeves 4 are arranged at intervals along the axial direction of the through-wall pipe 2. Be located to be provided with high temperature resistant and flexible non-metallic skin 7 between fixed ring 6 and adapter sleeve 4, thereby non-metallic skin 7 both sides are sealed butt joint enclose into both ends open-ended tubular structure and enclose wall pipe 2 inside. The end of the non-metallic skin 7 facing the joint sleeve 4 is fitted over the outside of the joint sleeve 4 and is fastened tightly to the joint sleeve 4 by means of a tightening strap 8. One end of the non-metal skin 7 facing the fixed ring 6 is sleeved outside the fixed ring 6 and tightly tied and fixed on the fixed ring 6 through a tightening tie 8.
The length of the non-metal skin 7 between the connecting sleeve 4 and the fixed ring 6 is long, and the distance between the rubber connecting sleeve 4 and the fixed ring 6 is long, so that the non-metal skin 7 has a stretching and shrinking allowance between the connecting sleeve 4 and the fixed ring 6.
And a heat insulation layer 9 which surrounds the wall penetrating pipe 2 in the inner part is arranged between the connecting sleeve 4 and the fixed ring 6, and the heat insulation layer 9 is positioned in the non-metal skin 7. The heat-insulating layer 9 is formed by aluminum silicate coiled felt wrapped on the wall-penetrating pipe 2. The aluminum silicate coiled felt wrapped outside the through-wall pipe 2 is fixed on the through-wall pipe 2 through a hoop.
Referring to fig. 1 and 2, a retaining ring 41 extending outward from the side wall of the connecting sleeve 4 is provided at one end of the connecting sleeve 4 away from the furnace wall 1, and the retaining ring 41 and the connecting sleeve 4 are welded and fixed. Because the non-metal skin 7 is bound and fixed on the connecting sleeve 4 through the tightening tie 8, when the non-metal skin 7 is in the stretching state, the retainer ring 41 can block the tightening tie 8, so that the non-metal skin 7 and the tightening tie 8 are not easy to slide from the connecting sleeve 4.
Referring to fig. 3, the fixing ring 6 includes at least two arc-shaped anchor ear pieces 61, and an annular structure capable of being fastened on the wall penetrating pipe 2 can be enclosed between the anchor ear pieces 61. In this embodiment, the number of the hoop sheets 61 is two, and the two hoop sheets 61 are semicircular. The two hoop sheets 61 are buckled together to form a complete circular ring structure and are clamped and fixed on the wall penetrating pipe 2. The two ends of the two hoop sheets 61 are fixed together by bolts respectively.
The top end of the outer side surface of the hoop sheet 61 is provided with a boss 62, and the boss 62 and the hoop sheet 61 are welded and fixed or integrally formed. When the hoop sheets 61 form a ring, the bosses 62 also form a ring structure. Referring to fig. 1, when the non-metallic skin 7 is bound to the fixing ring 6 by the tightening tie 8, the tightening tie 8 is located at a position below the boss 62.
Example 2:
referring to fig. 4 and 5, in order to provide a waste heat boiler wall tube sealing and heat insulating structure disclosed in the present application, embodiment 2 differs from embodiment 1 in that: the annular groove 42 is formed in the outer side surface of the connecting sleeve 4, the width of the groove 42 is wider than the bandwidth of the tightening tie 8, when the non-metal skin 7 and the connecting sleeve 4 are tied together by the tightening tie 8, the groove 42 where the tightening tie 8 is located is opposite, so that when the tightening tie 8 is tightened, the tightening tie 8 drives the non-metal skin 7 to be embedded into the groove 42 at the position opposite to the groove 42, and the situation that the non-metal skin 7 is separated from the connecting sleeve 4 is reduced.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a waste heat boiler wall tube seals thermal-insulated structure, includes brickwork (1) and wall tube (2) of boiler, perforated hole (11) have been seted up on brickwork (1), thereby wall tube (2) pass in perforation (11) stretch into the furnace of boiler, its characterized in that: the outside of furnace wall (1) is provided with wall-penetrating pipe (2) cover is at inside adapter sleeve (4), it is located to perforate (11) in the hole of adapter sleeve (4), adapter sleeve (4) one end with furnace wall (1) sealed fixed links to each other, wall-penetrating pipe (2) are located and are provided with fixed ring (6) on the body in furnace wall (1) outside, fixed ring (6) with interval sets up between adapter sleeve (4), fixed ring (6) with be provided with between adapter sleeve (4) with wall-penetrating pipe (2) enclose the tube-shape of inside and can carry out the nonmetal covering (7) that extend and contract between fixed ring (6) and adapter sleeve (4), nonmetal covering (7) are sealed fixed between fixed ring (6) and adapter sleeve (4) respectively, the position outside that wall-penetrating pipe (2) are located between adapter sleeve (4) and fixed ring (6) is established and is established An insulating layer (9) is arranged.
2. The waste heat boiler wall penetrating pipe sealing and heat insulating structure according to claim 1, characterized in that: and a heat preservation quilt (5) is arranged between the connecting sleeve (4) and the wall penetrating pipe (2).
3. The waste heat boiler wall penetrating pipe sealing and heat insulating structure according to claim 1, characterized in that: and the outer side surface of the wall penetrating pipe (2) is wound with heat insulation cloth, and the heat insulation cloth extends into the hearth of the boiler along with the wall penetrating pipe (2).
4. The waste heat boiler wall penetrating pipe sealing and heat insulating structure according to claim 1, characterized in that: the two ends of the non-metal skin (7) are respectively sleeved outside the connecting sleeve (4) and the fixing ring (6) and are tied up and fixed through tightening ties (8).
5. The waste heat boiler wall penetrating pipe sealing and heat insulating structure according to claim 4, characterized in that: and the connecting sleeve (4) is provided with an anti-falling structure for preventing the non-metal skin (7) from falling off from the connecting sleeve (4).
6. The waste heat boiler wall penetrating pipe sealing and heat insulating structure according to claim 5, characterized in that: the anti-falling structure is a check ring (41) arranged at the bottom end of the outer side of the connecting sleeve (4).
7. The waste heat boiler wall penetrating pipe sealing and heat insulating structure according to claim 5, characterized in that: the anti-falling structure is an annular groove (42) formed in the outer side surface of the connecting sleeve (4), and the width of the groove (42) is larger than that of the tightening tie (8).
8. The waste heat boiler wall penetrating pipe sealing and heat insulating structure according to claim 4, characterized in that: the fixed ring (6) comprises at least two arc-shaped hoop sheets (61), the hoop sheets (61) are enclosed into an annular structure which can be clamped and fixed on the wall penetrating pipe (2), and the adjacent hoop sheets (61) are fixed together through bolts.
9. The waste heat boiler wall penetrating pipe sealing and heat insulating structure according to claim 8, characterized in that: the outside top of embrace hoop piece (61) is provided with boss (62), when tightening up ribbon (8) and tying up non-metallic skin (7) and fixing on fixed ring (6), tightening up ribbon (8) are located the below of boss (62).
10. The waste heat boiler wall penetrating pipe sealing and heat insulating structure according to claim 1, characterized in that: the heat-insulating layer (9) is an aluminum silicate coiled felt wound on the wall penetrating pipe (2), and the aluminum silicate coiled felt is fixed on the wall penetrating pipe (2) through a hoop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021355988.0U CN212775996U (en) | 2020-07-10 | 2020-07-10 | Waste heat boiler wall pipe sealing and heat insulating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021355988.0U CN212775996U (en) | 2020-07-10 | 2020-07-10 | Waste heat boiler wall pipe sealing and heat insulating structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212775996U true CN212775996U (en) | 2021-03-23 |
Family
ID=75078840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021355988.0U Active CN212775996U (en) | 2020-07-10 | 2020-07-10 | Waste heat boiler wall pipe sealing and heat insulating structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212775996U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114923063A (en) * | 2022-04-27 | 2022-08-19 | 华能桐乡燃机热电有限责任公司 | Heat preservation structure of waste heat boiler wall penetrating pipe of gas turbine power plant |
-
2020
- 2020-07-10 CN CN202021355988.0U patent/CN212775996U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114923063A (en) * | 2022-04-27 | 2022-08-19 | 华能桐乡燃机热电有限责任公司 | Heat preservation structure of waste heat boiler wall penetrating pipe of gas turbine power plant |
| CN114923063B (en) * | 2022-04-27 | 2023-08-22 | 华能桐乡燃机热电有限责任公司 | Heat insulation structure of exhaust-heat boiler through-wall pipe of gas turbine power plant |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212775996U (en) | Waste heat boiler wall pipe sealing and heat insulating structure | |
| US4442585A (en) | Method of construction for thermal and acoustic insulation blankets | |
| US2964064A (en) | Fluid conduit insulating means | |
| CN105114763B (en) | Steam low energy consumption long distance delivery device | |
| KR101212120B1 (en) | Concentric pipe | |
| CA2841949A1 (en) | Pipe anchor | |
| KR101192736B1 (en) | Thermal insulation casing for pipe line and installing method thereof and manufacturing method thereof | |
| CN201177116Y (en) | Flexible heat-insulating layer hose | |
| CN208474785U (en) | A kind of prefabricated direct-buried steam insulation pipe of long heat transport net | |
| CN108167553A (en) | A kind of prefabricated aerial steam insulation pipe of inner sliding type and preparation method thereof | |
| KR100914754B1 (en) | Duct assembly for flue | |
| US9989189B1 (en) | Straps for pipe insulation | |
| KR100914755B1 (en) | Duct assembly for flue | |
| CN206469279U (en) | The adaptive insulation construction of high-temperature flue expansion joint | |
| CN111853372A (en) | Furnace bottom wall-penetrating expansion joint | |
| CN114962846A (en) | Be used for direct-burried hot water pipeline air release pipe compensation structure | |
| FI109828B (en) | Exhaust pipe to discharge hot substances | |
| CN208778876U (en) | Combustion engine boiler tube expansion joint | |
| CN207217170U (en) | A kind of cable in region of being overdoed for car launcher | |
| CN208038376U (en) | Tower body insulation construction | |
| CN217736675U (en) | Anti-freezing type pipe | |
| CN214745840U (en) | Prefabricated section-by-section connection axial compensation chimney | |
| KR101185587B1 (en) | Heat-Retaining Structure of Steam Pipe Device and Method of Using Thereof | |
| JP3145672U (en) | Piping insulation cover | |
| CN207195952U (en) | Multipurpose jet chimney end socket |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |