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
- heat exchanger
- pore
- tube
- tube sheet
- exchanger tube
- 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
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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
Abstract
The invention discloses a kind of gas inlet structures of multitubular boiler, it include: tube sheet, the side of tube sheet is smoke box side, the other side of tube sheet is water journey side, in the pore that the nozzle of every heat exchanger tube of water journey side stretches to tube sheet, the nozzle of every heat exchanger tube is fixed with corresponding with pore welded seal, the nozzle of every heat exchanger tube stretches to pore in one end of water journey side, inner wall welded seal of the nozzle and pore of every heat exchanger tube close to water journey side is fixed, high-temperature flame-proof pouring layer is set between tube sheet and smoke box, it buries and is fixed with and the one-to-one porcelain bushing of heat exchanger tube in high-temperature flame-proof pouring layer, one end of every porcelain bushing is connected with smoke box, the other end then stretches in heat exchanger tube, ceramic protection casing is additionally provided in each pore, ceramic protection pipe sleeve is outside the porcelain bushing in pore.Advantage of the present invention is: the weld seam between its energy effective protection tube sheet and heat exchanger tube, it is ensured that fire tube boiler is safely and reliably run.
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)
1. the gas inlet structure of multitubular boiler, comprising: tube sheet, the side of tube sheet are smoke box side, and the other side of tube sheet is water journey
Side, positioned at every heat exchanger tube of water journey side nozzle stretch to tube sheet a pore in, the nozzle of every heat exchanger tube with
Correspondence is fixed with pore welded seal, it is characterised in that: the nozzle of every heat exchanger tube stretches to pore close to the one of water journey side
In end, inner wall welded seal of the nozzle and pore of every heat exchanger tube close to water journey side is fixed, and is arranged between tube sheet and smoke box high
Warm fire resisting pouring layer is buried in high-temperature flame-proof pouring layer and is fixed with and the one-to-one porcelain bushing of heat exchanger tube, every ceramic jacket
One end of pipe is connected with smoke box, the other end then stretches in heat exchanger tube, and ceramic protection casing is additionally provided in each pore,
Ceramic protection pipe sleeve is outside the porcelain bushing in pore.
2. the gas inlet structure of multitubular boiler according to claim 1, it is characterised in that: ceramic protection pipe includes: anti-
Pillar ontology and protective jacket, the protective jacket are located in the pore of tube sheet, and protection tube body is poured together with porcelain bushing
It is fixed in high-temperature flame-proof pouring layer, and protects tube body block between the retaining ring on tube sheet and porcelain bushing outer wall.
3. the gas inlet structure of multitubular boiler according to claim 1 or 2, it is characterised in that: porcelain bushing and heat exchange
Between pipe, alumina silicate fibre is filled between ceramic protection pipe and the pore of tube sheet.
4. the gas inlet structure of multitubular boiler according to claim 1 or 2, it is characterised in that: high-temperature flame-proof pouring layer
Material be high temperature resisting refractory concrete.
5. the gas inlet structure of multitubular boiler according to claim 1 or 2, it is characterised in that: the pipe of every heat exchanger tube
Mouth opens up welding groove, welding groove and tube sheet complete penetraction and fusion in welding.
6. the gas inlet structure of multitubular boiler according to claim 1 or 2, it is characterised in that: every porcelain bushing is worn
It crosses and stretches to 20mm in heat exchanger tube after the pore on tube sheet again.
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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