CN103912888A - Sealing device at bottom of tail flue of boiler - Google Patents
Sealing device at bottom of tail flue of boiler Download PDFInfo
- Publication number
- CN103912888A CN103912888A CN201410120219.5A CN201410120219A CN103912888A CN 103912888 A CN103912888 A CN 103912888A CN 201410120219 A CN201410120219 A CN 201410120219A CN 103912888 A CN103912888 A CN 103912888A
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- flue
- sealing
- steel plate
- boiler
- sealing device
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Abstract
The invention provides a sealing device at the bottom of a tail flue of a boiler. The sealing device is capable of guaranteeing sealing property, good thermal expansion and high-efficiency and safety operation and is simple in structure and convenient to mount. The sealing device comprises a water cooling wall, a flue, a tail flue outlet and a bottom header, wherein the tail flue outlet is arranged on the lower portion of the real wall side of the flue, the bottom header is arranged below an inlet of the bottom flue outlet, and the water cooling wall is arranged on the front wall of the flue. The sealing device is characterized in that a sealing steel plate is arranged at the bottom of the flue and is supported on supporting box iron to form an upper plane of a platform frame integrally, the bottom of the platform frame is connectively welded with the upper end face of a support rod at the corresponding position, the bottom of the support rod is connectively welded to a bottom frame of the boiler, and the connecting position of the sealing steel plate and the bottom header are connectively welded.
Description
Technical field
The present invention relates to the technical field of boiler structure, be specially the sealing device of a kind of boiler back end ductwork bottom.
Background technology
Because the main heating surface of forced circulation gas-fired water heating boiler is supporting construction, and being designed to wall from boiler, boiler export flue gas draws, this class arrangement need to become hermetically-sealed construction by the bottom design of heated surface at the end of boiler, the hermetically-sealed construction of existing structure does not consider that the overall thermal of boiler expands, it is in boiler running process, emergency case easily occurs, boiler can not normally be moved, maintenance, replacing hermetically-sealed construction are wasted time and energy.
Summary of the invention
For the problems referred to above, the invention provides the sealing device of a kind of boiler back end ductwork bottom, it can guarantee sealing, has again good thermal expansivity, guarantees high efficiency boiler safe operation, and simple in structure being convenient to installed.
The sealing device of a kind of boiler back end ductwork bottom, its technical scheme is such: it comprises water-cooling wall, flue, back-end ductwork outlet, bottom header, described back-end ductwork outlet is positioned at the bottom of the rear wall side of described flue, described bottom header is positioned at the below of the porch of described bottom flue outlet, described water-cooling wall is positioned at the front wall displacement of described flue, it is characterized in that: mating formation in the bottom of described flue has sealing steel plate, described sealing steel plate is supported on the upper plane of the platform framework that supporting steel is combined to form, the bottom welding of described platform framework connects the upper surface of the support bar of correspondence position, the bottom welding of described support bar connects the under(-)chassis of boiler, the link position place of described sealing steel plate and described bottom header is welded to connect, the top evagination end face of the end face welded joints seal flap towards described flue side of described water-cooling wall, the lower vertical end face of described sealing flap is close to the upper surface of described sealing steel plate, and be welded to connect, gap place plug between described sealing flap and the pipe of described water-cooling wall is equipped with sealing fill block.
It is further characterized in that: described sealing steel plate is provided with manhole door near the position of described bottom header side, and described manhole door is arranged in the lower surface of described sealing steel plate, and described manhole door is opened down;
The horizontal length of described sealing flap is less than its vertical length, and the inner side of described sealing steel plate exceeds the lower vertical face of described sealing flap.
Adopt after structure of the present invention, because sealing steel plate is equipped with in the bottom of flue, the link position place of sealing steel plate and described bottom header is welded to connect, the top evagination end face of the end face welded joints seal flap towards described flue side of water-cooling wall, the lower vertical end face of sealing flap is close to the upper surface of described sealing steel plate, and be welded to connect, gap place plug between described sealing flap and the pipe of described water-cooling wall is equipped with sealing fill block, it is sealed in flue the flue gas in flue, can flow out from back-end ductwork outlet swimmingly, and because sealing steel plate is supported on the upper plane of the platform framework that supporting steel is combined to form, there is not welding relation in it, sealing steel plate only relies on gravity to be supported on the upper plane of the platform framework that supporting steel is combined to form, in the time there is thermal expansion, between sealing steel plate and its structure being welded to connect, can there is thermal expansion, to sum up, it can guarantee sealing, there is again good thermal expansivity, guarantee high efficiency boiler safe operation, and simple in structure being convenient to installed.
Accompanying drawing explanation
Fig. 1 is the structural representation that the present invention is applied to boiler;
Fig. 2 is front view structural representation of the present invention;
Fig. 3 is the top view structural representation of Fig. 2;
Fig. 4 is that the A-A of Fig. 3 cuts open structure for amplifying schematic diagram;
Fig. 5 is the local structure for amplifying schematic diagram in the B place of Fig. 3.
The specific embodiment
The sealing device of a kind of boiler back end ductwork bottom, see Fig. 1～Fig. 5: it comprises water-cooling wall 1, flue 2, back-end ductwork outlet 3, bottom header 4, back-end ductwork outlet 3 is positioned at the bottom of the rear wall side of flue 2, bottom header 4 is positioned at the below of the porch of bottom flue outlet 3, water-cooling wall 1 is positioned at the front wall displacement of flue 2, mating formation in the bottom of flue 2 has sealing steel plate 5, sealing steel plate 5 is supported on the upper plane of the platform framework 12 that supporting steel 6 is combined to form, the bottom welding of platform framework 12 connects the upper surface of the support bar 7 of correspondence position, the bottom welding of support bar 7 connects the under(-)chassis 8 of boiler, the link position place of sealing steel plate 5 and bottom header 4 is welded to connect, the top evagination end face of the end face welded joints seal flap 9 towards flue 2 sides of water-cooling wall 1, the lower vertical end face of sealing flap 9 is close to the upper surface that seals steel plate 5, and be welded to connect, gap place plug between sealing flap 9 and the pipe of water-cooling wall 1 is equipped with sealing fill block 10.
Sealing steel plate 5 is provided with manhole door 11 near the position of bottom header 4 sides, and manhole door 11 is arranged in the lower surface of sealing steel plate 5, and manhole door 11 is opened down, and manhole door 11 is for maintenance; The horizontal length of sealing flap 9 is less than its vertical length, and the inner side of sealing steel plate 5 exceeds the lower vertical face that seals flap 9.
Claims (3)
1. the sealing device of a boiler back end ductwork bottom, it comprises water-cooling wall, flue, back-end ductwork outlet, bottom header, described back-end ductwork outlet is positioned at the bottom of the rear wall side of described flue, described bottom header is positioned at the below of the porch of described bottom flue outlet, described water-cooling wall is positioned at the front wall displacement of described flue, it is characterized in that: mating formation in the bottom of described flue has sealing steel plate, described sealing steel plate is supported on the upper plane of the platform framework that supporting steel is combined to form, the bottom welding of described platform framework connects the upper surface of the support bar of correspondence position, the bottom welding of described support bar connects the under(-)chassis of boiler, the link position place of described sealing steel plate and described bottom header is welded to connect, the top evagination end face of the end face welded joints seal flap towards described flue side of described water-cooling wall, the lower vertical end face of described sealing flap is close to the upper surface of described sealing steel plate, and be welded to connect, gap place plug between described sealing flap and the pipe of described water-cooling wall is equipped with sealing fill block.
2. the sealing device of a kind of boiler back end ductwork according to claim 1 bottom, it is characterized in that: described sealing steel plate is provided with manhole door near the position of described bottom header side, described manhole door is arranged in the lower surface of described sealing steel plate, and described manhole door is opened down.
3. the sealing device of a kind of boiler back end ductwork according to claim 1 and 2 bottom, is characterized in that: the horizontal length of described sealing flap is less than its vertical length, and the inner side of described sealing steel plate exceeds the lower vertical face of described sealing flap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410120219.5A CN103912888B (en) | 2014-03-28 | 2014-03-28 | A kind of sealing device bottom boiler back end ductwork |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410120219.5A CN103912888B (en) | 2014-03-28 | 2014-03-28 | A kind of sealing device bottom boiler back end ductwork |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103912888A true CN103912888A (en) | 2014-07-09 |
| CN103912888B CN103912888B (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410120219.5A Active CN103912888B (en) | 2014-03-28 | 2014-03-28 | A kind of sealing device bottom boiler back end ductwork |
Country Status (1)
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| CN (1) | CN103912888B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110715312A (en) * | 2019-10-24 | 2020-01-21 | 哈尔滨锅炉厂有限责任公司 | Hanging sealing device for tail flue of gas boiler |
| CN111895436A (en) * | 2020-07-07 | 2020-11-06 | 哈尔滨哈锅锅炉工程技术有限公司 | Tail water-pocket wall flue device for circulating fluidized bed hot water boiler |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3509774A1 (en) * | 1985-03-19 | 1986-10-02 | Witzenmann GmbH, Metallschlauch-Fabrik Pforzheim, 7530 Pforzheim | Pipe connection |
| DE4443603A1 (en) * | 1994-12-07 | 1996-06-13 | Steinzeugwerk Ponholz Gmbh & C | Joint connection for pipes, especially ceramic chimney pipes |
| CN201724239U (en) * | 2010-08-18 | 2011-01-26 | 上海锅炉厂有限公司 | Flue gas sealing baffle plate between pressure part modules of waste heat boiler |
| CN202056904U (en) * | 2011-05-09 | 2011-11-30 | 无锡市华东电力设备有限公司 | Double-sealing hot air insulating door with single-latch-plate door plank |
| CN203797677U (en) * | 2014-03-28 | 2014-08-27 | 无锡华光锅炉股份有限公司 | Sealing device for tail smoke flue bottom of boiler |
-
2014
- 2014-03-28 CN CN201410120219.5A patent/CN103912888B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3509774A1 (en) * | 1985-03-19 | 1986-10-02 | Witzenmann GmbH, Metallschlauch-Fabrik Pforzheim, 7530 Pforzheim | Pipe connection |
| DE4443603A1 (en) * | 1994-12-07 | 1996-06-13 | Steinzeugwerk Ponholz Gmbh & C | Joint connection for pipes, especially ceramic chimney pipes |
| CN201724239U (en) * | 2010-08-18 | 2011-01-26 | 上海锅炉厂有限公司 | Flue gas sealing baffle plate between pressure part modules of waste heat boiler |
| CN202056904U (en) * | 2011-05-09 | 2011-11-30 | 无锡市华东电力设备有限公司 | Double-sealing hot air insulating door with single-latch-plate door plank |
| CN203797677U (en) * | 2014-03-28 | 2014-08-27 | 无锡华光锅炉股份有限公司 | Sealing device for tail smoke flue bottom of boiler |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110715312A (en) * | 2019-10-24 | 2020-01-21 | 哈尔滨锅炉厂有限责任公司 | Hanging sealing device for tail flue of gas boiler |
| CN110715312B (en) * | 2019-10-24 | 2021-10-01 | 哈尔滨锅炉厂有限责任公司 | Hanging sealing device for tail flue of gas boiler |
| CN111895436A (en) * | 2020-07-07 | 2020-11-06 | 哈尔滨哈锅锅炉工程技术有限公司 | Tail water-pocket wall flue device for circulating fluidized bed hot water boiler |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103912888B (en) | 2016-08-17 |
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Address after: 214028 No. 3 Chengnan Road, new Wu District, Jiangsu, Wuxi Patentee after: Wuxi Huaguang Environmental Protection Energy Group Co., Ltd Address before: 214028 No. 3 Chengnan Road, New District, Jiangsu, Wuxi Patentee before: WUXI HUAGUANG BOILER Co.,Ltd. |