CN203560883U - Configuration structure for lower header of boiler wall enclosure - Google Patents
Configuration structure for lower header of boiler wall enclosure Download PDFInfo
- Publication number
- CN203560883U CN203560883U CN201320549188.6U CN201320549188U CN203560883U CN 203560883 U CN203560883 U CN 203560883U CN 201320549188 U CN201320549188 U CN 201320549188U CN 203560883 U CN203560883 U CN 203560883U
- Authority
- CN
- China
- Prior art keywords
- lower header
- steel plate
- wall lower
- side wall
- 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.)
- Withdrawn - After Issue
Links
- 238000007789 sealing Methods 0.000 claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 26
- 239000010959 steel Substances 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 9
- 229910000975 Carbon steel Inorganic materials 0.000 claims abstract description 5
- 239000010962 carbon steel Substances 0.000 claims abstract description 5
- 230000000875 corresponding Effects 0.000 claims abstract description 5
- 238000002955 isolation Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 230000002522 swelling Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Abstract
The utility model provides a configuration structure for a lower header of a boiler wall enclosure, which can be used for eliminating welding stress and expansion stress between a sealing steel plate and a pipe, eliminating a problem of pipe wall tearing by the sealing steel plate caused by stress change, ensuring normal use of the boiler wall enclosure and furthermore ensuring normal use of the boiler. The configuration structure comprises the components of: a lower header of a front wall, a lower head of the side wall, a bent pipe of a side wall enclosure and the sealing steel plate. After the sealing steel plate is welded with the lower header of the front wall, the lower header of the bent pipe of the side wall enclosure, an insulating structure is formed. The configuration structure for the lower header of the boiler wall enclosure is characterized in that: the lower header of the front wall is arranged above the lower header of the side wall vertically; one bent pipe of the side wall enclosure is arranged; the horizontal length of the bent pipe of the side wall enclosure is reduced to one half of a corresponding horizontal distance of the bent pipe of the side wall enclosure when the horizontal position of the lower header of the front wall is equal with that of the lower header of the side wall; and the sealing steel plate is particularly made of carbon steel material.
Description
Technical field
The utility model relates to the technical field of boiler structure, is specially a kind of arrangement for boiler bag wall lower header.
Background technology
At present, many boilers have been used bag wall construction in structural design, bag wall is to be generally spliced by pipe and band steel, its sealing far surpasses traditional backplate furnace wall structure of laying bricks, and the overall weight of bag wall is light, and it is fixing that structure is convenient to suspention, is convenient to solve expansion issues, wrapping in addition wall and can be used as a part for overheated heating surface, is to achieve many things at one stroke so adopt bag wall construction.But bag wall lower bend is long-term in service because booster usually occurs the concentrated reason of stress at boiler, has brought great hidden danger to the safe and stable operation of boiler.Analyze reason, the surrounding lower header of bag wall is all in the position of same level absolute altitude, see Fig. 1, Fig. 2, this structure directly causes in figure dash area area excessive, causes the material of needs many, and the bend pipe horizontal range of using large (setpoint distance is L herein), in figure, dash area need to carry out seal welding with steel plate, during due to boiler operatiopn, flue-gas temperature is higher herein, and existing structure all adopts stainless steel material, therefore in the seal welding process with pipe, can produce stress; High-temperature flue gas during boiler operatiopn, the swell increment that causes sealing steel plate is greater than the swell increment of pipe, and the stress that has further aggravated stitching portion produces; Along with the repeatedly start and stop of boiler, the alternation of stress is concentrated and must be caused sealing steel plate pipe is torn, and causes booster and blowing out.
Summary of the invention
For the problems referred to above, the utility model provides a kind of arrangement for boiler bag wall lower header, it can eliminate welding stress and swelling stress between sealing steel plate and pipe, solution is because the variation of stress causes sealing the problem that steel plate is torn tube wall, guarantee the normal use of boiler enclosure wall tube, and then guaranteed the normal use of boiler.
A kind of arrangement for boiler bag wall lower header, its technical scheme is such: it comprises front wall lower header, side wall lower header, side bag wall bend pipe, sealing steel plate, described sealing Plate Welding is in described front wall lower header, side wall lower header, after side bag wall bend pipe, form isolation structure, it is characterized in that: described front wall lower header is positioned at the level top of described side wall lower header, described side bag wall bend pipe is one, the horizontal range of described side bag wall bend pipe is reduced to half of horizontal range of corresponding side bag wall bend pipe when the horizontal level of front wall lower header equals side wall lower header, described sealing steel plate is specially carbon steel material sealing steel plate.
It is further characterized in that: described front wall lower header can be also rear wall lower header.
Adopt after structure of the present utility model, because the horizontal level of front wall lower header is higher than side wall lower header, it makes side bag wall bend pipe only need be provided with one, and its horizontal range can be reduced to half of horizontal range of corresponding side bag wall bend pipe when the horizontal level of front wall lower header equals side wall lower header, the corresponding area of sealing steel plate has just reduced like this, thereby the materials'use of total reduces, saved cost, in addition, because sealing steel plate is specially carbon steel material sealing steel plate, its material is consistent with pipe, thereby make the coefficient of expansion consistent, it can eliminate welding stress and swelling stress between sealing steel plate and pipe, solution is because the variation of stress causes sealing the problem that steel plate is torn tube wall, guaranteed the normal use of boiler enclosure wall tube, and then guarantee the normal use of boiler.
Accompanying drawing explanation
Fig. 1 is the front view structural representation of prior art;
Fig. 2 is the side bag wall bend pipe structure schematic diagram of prior art;
Fig. 3 is front view structural representation of the present utility model;
Fig. 4 is that the A of Fig. 3 is to view structure schematic diagram;
Fig. 5 is side bag wall bend pipe structure schematic diagram of the present utility model.
The specific embodiment
See Fig. 3～Fig. 5, it comprises front wall lower header 1, side wall lower header 2, side bag wall bend pipe 3, sealing steel plate 4, sealing steel plate 4 is welded in front wall lower header 1, side wall lower header 2, side bag wall bend pipe 3 rear formation isolation structures, front wall lower header 1 is positioned at the level top of side wall lower header 2, side bag wall bend pipe 3 is one, the horizontal range of side bag wall bend pipe 3 is reduced to half of horizontal range of side bag wall bend pipe in Fig. 2, the horizontal range of side bag wall bend pipe 3 is 0.5L, and sealing steel plate 4 is specially carbon steel material sealing steel plate.Wherein front wall lower header 1 can be also rear wall lower header.
Claims (2)
1. the arrangement for boiler bag wall lower header, it comprises front wall lower header, side wall lower header, side bag wall bend pipe, sealing steel plate, described sealing Plate Welding is in described front wall lower header, side wall lower header, after side bag wall bend pipe, form isolation structure, it is characterized in that: described front wall lower header is positioned at the level top of described side wall lower header, described side bag wall bend pipe is one, the horizontal range of described side bag wall bend pipe is reduced to half of horizontal range of corresponding side bag wall bend pipe when the horizontal level of front wall lower header equals side wall lower header, described sealing steel plate is specially carbon steel material sealing steel plate.
2. a kind of arrangement for boiler bag wall lower header according to claim 1, is characterized in that: described front wall lower header can be also rear wall lower header.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320549188.6U CN203560883U (en) | 2013-09-05 | 2013-09-05 | Configuration structure for lower header of boiler wall enclosure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320549188.6U CN203560883U (en) | 2013-09-05 | 2013-09-05 | Configuration structure for lower header of boiler wall enclosure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203560883U true CN203560883U (en) | 2014-04-23 |
Family
ID=50510602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320549188.6U Withdrawn - After Issue CN203560883U (en) | 2013-09-05 | 2013-09-05 | Configuration structure for lower header of boiler wall enclosure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203560883U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465763A (en) * | 2015-03-12 | 2016-04-06 | 无锡华光锅炉股份有限公司 | Sealing device for wall wrapping pipe lower header of boiler |
-
2013
- 2013-09-05 CN CN201320549188.6U patent/CN203560883U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465763A (en) * | 2015-03-12 | 2016-04-06 | 无锡华光锅炉股份有限公司 | Sealing device for wall wrapping pipe lower header of boiler |
| CN105465763B (en) * | 2015-03-12 | 2017-11-17 | 无锡华光锅炉股份有限公司 | Sealing device at a kind of boiler enclosure wall tube bottom header |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140423 Effective date of abandoning: 20160608 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |