CN109579600A - The gas inlet structure of multitubular boiler - Google Patents
The gas inlet structure of multitubular boiler Download PDFInfo
- Publication number
- CN109579600A CN109579600A CN201811608102.6A CN201811608102A CN109579600A CN 109579600 A CN109579600 A CN 109579600A CN 201811608102 A CN201811608102 A CN 201811608102A CN 109579600 A CN109579600 A CN 109579600A
- Authority
- CN
- China
- Prior art keywords
- tube
- heat exchange
- ceramic
- sheet
- gas inlet
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000000919 ceramic Substances 0.000 claims abstract description 24
- 230000001681 protective effect Effects 0.000 claims abstract description 15
- 239000000779 smoke Substances 0.000 claims abstract description 15
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000003546 flue gas Substances 0.000 claims abstract description 13
- 238000003466 welding Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000000835 fiber Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims 1
- 235000012239 silicon dioxide Nutrition 0.000 claims 1
- 239000011148 porous material Substances 0.000 description 20
- 229910052573 porcelain Inorganic materials 0.000 description 18
- 239000007789 gas Substances 0.000 description 15
- 230000000694 effects Effects 0.000 description 5
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 241000973497 Siphonognathus argyrophanes Species 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
- F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
- F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
- F28F9/182—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding the heat-exchange conduits having ends with a particular shape, e.g. deformed; the heat-exchange conduits or end plates having supplementary joining means, e.g. abutments
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B9/00—Steam boilers of fire-tube type, i.e. the flue gas from a combustion chamber outside the boiler body flowing through tubes built-in in the boiler body
- F22B9/10—Steam boilers of fire-tube type, i.e. the flue gas from a combustion chamber outside the boiler body flowing through tubes built-in in the boiler body the boiler body being disposed substantially horizontally, e.g. at the side of the combustion chamber
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Details Of Heat-Exchange And Heat-Transfer (AREA)
Abstract
本发明公开了一种火管锅炉的烟气进口结构，包括：管板，管板的一侧为烟箱侧，管板的另一侧为水程侧，位于水程侧的每根换热管的管口均伸入至管板的一个管孔中，每根换热管的管口均与对应与管孔焊接密封固定，每根换热管的管口均伸入至管孔靠近水程侧的一端内，每根换热管的管口与管孔靠近水程侧的内壁焊接密封固定，管板与烟箱之间设置高温耐火浇筑层，高温耐火浇筑层内埋设固定有与换热管一一对应的陶瓷套管，每根陶瓷套管的一端与烟箱相连通、另一端则伸入至换热管内，每个管孔内均还设置有陶瓷防护套管，陶瓷防护管套装在管孔内的陶瓷套管外。本发明所述的优点在于：其能有效保护管板与换热管之间的焊缝，确保水火管锅炉安全可靠地运行。
The invention discloses a flue gas inlet structure of a fire tube boiler, comprising: a tube sheet, one side of the tube sheet is the smoke box side, the other side of the tube sheet is the water side, and each heat exchange tube located on the water side is The nozzles of the tubes all extend into a tube hole of the tube sheet, the nozzles of each heat exchange tube are welded and sealed with the corresponding tube holes, and the nozzles of each heat exchange tube extend into the tube holes close to the water. In one end of the process side, the nozzle of each heat exchange tube and the inner wall of the tube hole near the water process side are welded and sealed, and a high-temperature refractory pouring layer is set between the tube sheet and the smoke box. One end of each ceramic sleeve is connected to the smoke box, and the other end extends into the heat exchange tube. Each tube hole is also provided with a ceramic protective sleeve. The ceramic protective tube It is set outside the ceramic sleeve in the pipe hole. The advantages of the invention are that it can effectively protect the welding seam between the tube sheet and the heat exchange tube, and ensure the safe and reliable operation of the water and fire tube boiler.
Description
Technical field
The present invention relates to multitubular boiler technical fields, and in particular to the gas inlet structure of multitubular boiler.
Background technique
Currently, the gas inlet of multitubular boiler, structure specifically includes that tube sheet, and the side of tube sheet is smoke box side, tube sheet
The other side be water journey side, positioned at every heat exchanger tube of water journey side nozzle stretch to tube sheet a pore in, every heat exchange
One end welded seal of the nozzle of pipe with corresponding and pore close to smoke box is fixed.Into the high-temperature flue gas in smoke box through heat exchanger tube
Nozzle enter in heat exchanger tube, in heat exchanger tube high-temperature flue gas water journey side discharge heat.
The attachment weld of exchanger tubes and tubesheets plays the buffer action to high-temperature flue gas and boiler water, while attachment weld
Stay bolt effect is also acted to tube sheet.But the attachment weld of exchanger tubes and tubesheets is exposed under high-temperature flue gas, for a long time by high temperature
Flue gas washes away, in boiler running process, the connecting portion of exchanger tubes and tubesheets can also be repeatedly subjected to thermal deformation, thermal shock with
And pulling-out force effect, therefore the attachment weld of exchanger tubes and tubesheets is extremely easily damaged.Once the connection of exchanger tubes and tubesheets is welded
Seam is impaired, will generate leakage between exchanger tubes and tubesheets, tube sheet, heat exchanger tube and other component all can by erosion, thus
Directly affect the stabilization of production, the quality of product, the safety of equipment.
Summary of the invention
The technical problem to be solved in the invention is: providing a kind of attachment weld for capableing of effective protection exchanger tubes and tubesheets
Multitubular boiler gas inlet structure.
To solve the above problems, the technical solution adopted by the present invention is that: the gas inlet structure of multitubular boiler, comprising: pipe
Plate, the side of tube sheet are smoke box side, and the other side of tube sheet is water journey side, and the nozzle positioned at every heat exchanger tube of water journey side protrudes into
Into a pore of tube sheet, the nozzle of every heat exchanger tube is fixed with corresponding with pore welded seal, the pipe of every heat exchanger tube
Mouth stretches to pore in one end of water journey side, and inner wall welding of the nozzle and pore of every heat exchanger tube close to water journey side is close
Sealing is fixed, and high-temperature flame-proof pouring layer is arranged between tube sheet and smoke box, buries and is fixed with and heat exchanger tube one in high-temperature flame-proof pouring layer
One corresponding porcelain bushing, one end of every porcelain bushing is connected with smoke box, the other end then stretches in heat exchanger tube, Mei Geguan
Ceramic protection casing is additionally provided in hole, ceramic protection pipe sleeve is outside the porcelain bushing in pore.
Further, the gas inlet structure of multitubular boiler above-mentioned, wherein ceramic protection pipe includes: protection tube body
And protective jacket, the protective jacket are located in the pore of tube sheet, protection tube body is poured together with porcelain bushing is fixed on height
In warm fire resisting pouring layer, and protect tube body block between the retaining ring on tube sheet and porcelain bushing outer wall.
Further, the gas inlet structure of multitubular boiler above-mentioned, wherein between porcelain bushing and heat exchanger tube, ceramics
Alumina silicate fibre is filled between protecting tube and the pore of tube sheet.
Further, the gas inlet structure of multitubular boiler above-mentioned, wherein the material of high-temperature flame-proof pouring layer is high temperature
Refractory concrete.
Further, the gas inlet structure of multitubular boiler above-mentioned, wherein the nozzle of every heat exchanger tube opens up welding
Groove, welding groove and tube sheet complete penetraction and fusion in welding.
Further, the gas inlet structure of multitubular boiler above-mentioned, wherein every porcelain bushing passes through the pipe on tube sheet
Kong Houzai stretches to 20mm in heat exchanger tube.
The invention has the advantages that the setting of one, high-temperature flame-proof pouring layer can play good heat insulation.Two, high temperature cigarette
Gas is entered in heat exchanger tube by porcelain bushing, and porcelain bushing protrudes into heat exchanger tube certain length, can make the evaporation starting point of heat exchanger tube
At attachment weld far from tube sheet and heat exchanger tube, so as to the weld seam between effective protection tube sheet and heat exchanger tube.Three, tube sheet with
Weld seam between heat exchanger tube is located at one end in pore close to water journey side, and such purpose is: the water energy in boiler is to pipe
Weld seam between plate and heat exchanger tube plays the role of good cooling effect, to further function as protection weld seam.Four, ceramic
The setting of protecting tube and alumina silicate fibre plays the role of further protecting to the weld seam between tube sheet and heat exchanger tube.
In conclusion using the gas inlet structure of multitubular boiler of the present invention, it can be between effective protection tube sheet and heat exchanger tube
Weld seam, the case where preventing welding point from leaking, it is ensured that fire tube boiler is safely and reliably run.
Detailed description of the invention
Fig. 1 is the schematic diagram of the gas inlet structure of multitubular boiler of the present invention.
Fig. 2 is the attachment structure schematic diagram of exchanger tubes and tubesheets.
Specific embodiment
The following further describes the present invention in detail with reference to the accompanying drawings and preferred embodiments.
As shown in Figure 1 and Figure 2, the gas inlet structure of multitubular boiler, comprising: tube sheet 1, the side of tube sheet 1 are smoke box side 2,
The other side of tube sheet 1 is water journey side 3.A pore of tube sheet 1 is stretched to positioned at the nozzle of the every heat exchanger tube 4 of water journey side 3
In 11, the nozzle of every heat exchanger tube 4 is fixed with corresponding with 11 welded seal of pore.The nozzle 41 of every heat exchanger tube 4 protrudes into
To pore 11 in one end of water journey side 3, inner wall of the nozzle 41 and pore 11 of every heat exchanger tube 4 close to water journey side 3 is welded
Sealing is fixed.The nozzle 41 of every heat exchanger tube 4 opens up welding groove 411, welding groove 411 and 1 complete penetraction and fusion in welding of tube sheet.
In the present embodiment, high-temperature flame-proof pouring layer 5 is set, the material of high-temperature flame-proof pouring layer 5 is between tube sheet 1 and smoke box
High temperature resisting refractory concrete.It buries and is fixed with and the one-to-one porcelain bushing 6 of heat exchanger tube 4 in high-temperature flame-proof pouring layer 5.Every pottery
One end of porcelain bushing shell 6 is connected with smoke box, the other end then passes through the pore 11 of tube sheet 1 and stretches in corresponding heat exchanger tube 4.Every
Porcelain bushing 6 stretches to 20mm in heat exchanger tube 4 after passing through the pore 11 on tube sheet 1 again.
Ceramic protection pipe 7 is additionally provided in each pore 11, ceramic protection pipe 7 is sleeved on the porcelain bushing in pore 11
Outside 6.Specifically, ceramic protection pipe 7 includes: that protection tube body 71 and protective jacket 72, the protective jacket 72 are located at the pipe of tube sheet 1
In hole 11, protection tube body 71 is poured together with porcelain bushing 6 to be fixed in high-temperature flame-proof pouring layer 5, and protecting tube sheet
71 block of body is between the retaining ring 61 on 6 outer wall of tube sheet 1 and porcelain bushing.Between porcelain bushing 6 and heat exchanger tube 4, ceramic protection
Alumina silicate fibre 8 is filled between pipe 7 and the pore 11 of tube sheet 1.
The present invention has the advantages that the setting of one, high-temperature flame-proof pouring layer 5 can play good heat insulation.Two, high temperature
Flue gas is entered in heat exchanger tube 4 by porcelain bushing 6, and porcelain bushing 6 protrudes into 4 certain length of heat exchanger tube, can make the steaming of heat exchanger tube
At attachment weld of the initiate point far from tube sheet 1 and heat exchanger tube 4, so as to the weldering between effective protection tube sheet 1 and heat exchanger tube 4
Seam.Three, the weld seam between tube sheet 1 and heat exchanger tube 4 is located at one end in pore 11 close to water journey side 3, and such purpose is:
Water energy in boiler plays good cooling effect to the weld seam between tube sheet 1 and heat exchanger tube 4, to further function as protection
The effect of weld seam.Four, the setting of ceramic protection pipe 7 and alumina silicate fibre 8 is played between tube sheet 1 and heat exchanger tube 4
Weld seam plays the role of further protecting.In conclusion using the gas inlet structure of multitubular boiler of the present invention,
Can weld seam between effective protection tube sheet 1 and heat exchanger tube 4, the case where preventing welding point from leaking, it is ensured that fire tube boiler
Safely and reliably run.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811608102.6A CN109579600A (en) | 2018-12-27 | 2018-12-27 | The gas inlet structure of multitubular boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811608102.6A CN109579600A (en) | 2018-12-27 | 2018-12-27 | The gas inlet structure of multitubular boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109579600A true CN109579600A (en) | 2019-04-05 |
Family
ID=65932022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811608102.6A Pending CN109579600A (en) | 2018-12-27 | 2018-12-27 | The gas inlet structure of multitubular boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109579600A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112197256A (en) * | 2020-10-10 | 2021-01-08 | 宜兴市鹏业耐火制品有限公司 | Tube plate connecting mechanism for waste heat boiler of sulfur recovery device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1371991A (en) * | 1963-08-01 | 1964-09-11 | Gen Thermique | Improvements to fire tube boilers |
| US20060131005A1 (en) * | 2004-12-21 | 2006-06-22 | Borsig Gmbh | Heat exchanger for cooling a hot gas that contains solid particles |
| CN201891982U (en) * | 2010-11-08 | 2011-07-06 | 洛阳瑞昌石油化工设备有限公司 | Composite ceramic sleeve for shell and tube type waste heat boiler |
| CN203628598U (en) * | 2013-12-17 | 2014-06-04 | 苏州海陆重工股份有限公司 | Waste heat boiler |
| CN204987050U (en) * | 2015-07-23 | 2016-01-20 | 江西南方锅炉有限责任公司 | Novel fire tobacco pipe abrasionproof structure of chaff boiler |
| CN205090356U (en) * | 2015-09-25 | 2016-03-16 | 科洋环境工程（上海）有限公司 | Waste heat boiler |
| CN209672922U (en) * | 2018-12-27 | 2019-11-22 | 苏州海陆重工股份有限公司 | The gas inlet structure of multitubular boiler |
-
2018
- 2018-12-27 CN CN201811608102.6A patent/CN109579600A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1371991A (en) * | 1963-08-01 | 1964-09-11 | Gen Thermique | Improvements to fire tube boilers |
| US20060131005A1 (en) * | 2004-12-21 | 2006-06-22 | Borsig Gmbh | Heat exchanger for cooling a hot gas that contains solid particles |
| CN201891982U (en) * | 2010-11-08 | 2011-07-06 | 洛阳瑞昌石油化工设备有限公司 | Composite ceramic sleeve for shell and tube type waste heat boiler |
| CN203628598U (en) * | 2013-12-17 | 2014-06-04 | 苏州海陆重工股份有限公司 | Waste heat boiler |
| CN204987050U (en) * | 2015-07-23 | 2016-01-20 | 江西南方锅炉有限责任公司 | Novel fire tobacco pipe abrasionproof structure of chaff boiler |
| CN205090356U (en) * | 2015-09-25 | 2016-03-16 | 科洋环境工程（上海）有限公司 | Waste heat boiler |
| CN209672922U (en) * | 2018-12-27 | 2019-11-22 | 苏州海陆重工股份有限公司 | The gas inlet structure of multitubular boiler |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112197256A (en) * | 2020-10-10 | 2021-01-08 | 宜兴市鹏业耐火制品有限公司 | Tube plate connecting mechanism for waste heat boiler of sulfur recovery device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190405 |