CN107575857A - A kind of CFBB air cooling membrane type central tube - Google Patents
A kind of CFBB air cooling membrane type central tube Download PDFInfo
- Publication number
- CN107575857A CN107575857A CN201710830446.0A CN201710830446A CN107575857A CN 107575857 A CN107575857 A CN 107575857A CN 201710830446 A CN201710830446 A CN 201710830446A CN 107575857 A CN107575857 A CN 107575857A
- Authority
- CN
- China
- Prior art keywords
- central tube
- hollow seats
- disc
- tube body
- membrane type
- 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
- 238000001816 cooling Methods 0.000 title claims abstract description 14
- 239000012528 membrane Substances 0.000 title claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 27
- 239000010959 steel Substances 0.000 claims abstract description 27
- 239000000725 suspension Substances 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 9
- 239000012774 insulation material Substances 0.000 claims description 5
- 238000007747 plating Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 4
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000003870 refractory metal Substances 0.000 claims description 3
- 238000005336 cracking Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 238000002485 combustion reaction Methods 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a kind of CFBB air cooling membrane type central tube,Including central tube body,Disc hollow seats,Conical outlet flue,Air intake interface,Central tube supports and the cold screen of separator vapour,The circumferencial direction of central tube body is made up of some round tube rows,Band steel welded seal is used between round tube row,Central tube body interior is supported by longitudinally disposed steel pipe post pipe and the endless tube laterally set,Disc hollow seats are set on the outside of central tube body upper end,Disc hollow seats are welded and fixed with conical outlet flue,Several air intake interfaces are evenly arranged with disc hollow seats,Central tube support even suspension is placed on disc hollow seats,The present invention can reduce the running temperature of central tube body,The inhomogeneities of diminution center drum surface temperature,Central tube supporting construction is optimized again,Prevent central tube support scaling loss cracking from causing central tube to drop.
Description
Technical field：
The invention belongs to boiler air cooling membrane type central tube technical field, specially a kind of CFBB air cooling membrane type center
Cylinder.
Background technology：
Conventional recycle fluidized-bed combustion boiler central cylinder of separator is by heat-resisting steel casting or rolls steel plate butt welding and forms, into it is cylindric or on
Cylinder slower conical tube shape, it is to ensure boiler separator separating effect, realize the important component of Matter Transfer, central tube is in high-temperature flue gas
Middle dry combustion method, no cooling medium, and most earlier operation CFBB emulsion zone single-point bed temperatures are up to 995 DEG C or so, it is average
Bed temperature is at 950 DEG C or so.Boiler separator central tube thermic load is uneven, and surface temperature gradient is big and larger with load variations,
Temperature stress is produced, it is yielding to come off, trigger machine halt trouble when serious.So that central tube service life is no more than 3 years, machine is influenceed
Group on-load ability and efficiency.
The content of the invention：
In view of the above-mentioned problems, the technical problem to be solved in the present invention is to provide a kind of CFBB air cooling membrane type center
Cylinder.
A kind of CFBB air cooling membrane type central tube of the present invention, including the hollow branch of central tube body, disc
Seat, the support of conical outlet flue, air intake interface, central tube and the cold screen of separator vapour, the circumferencial direction of the central tube body by
Some round tube row's compositions, round tube use band steel welded seal between arranging, and central tube body interior passes through longitudinally disposed
Steel pipe post pipe and the endless tube support laterally set, the central tube outer body set disc hollow seats, the disk
Shape hollow seats are welded and fixed with conical outlet flue, and several air intake interfaces, institute are evenly arranged with disc hollow seats
State central tube body to support provided with several central tubes, central tube support suspension is placed on disc hollow seats, disc
It is provided with hollow seats and corresponds to the stopping means that central tube support is set, between the cold screen of the central tube body and separator vapour
Flexible seal device is installed, the flexible seal device is made up of corrugated plating and aluminum silicate insulation material.
Preferably, round tube row, band steel, steel pipe post pipe and the endless tube are made of refractory metal material.
Preferably, spacing is arranged in the steel pipe post pipe longitudinal direction to the direction perforate of the central tube center of circle, perforate spacing with round tube
Unanimously and with round tube misarrangement arrange.
Preferably, light thermal insulation pouring material is laid inside and outside the round tube row, is flushed after auxiliary material with steel pipe post pipe.
Beneficial effects of the present invention：The present invention can reduce the running temperature of central tube body, reduce central tube surface temperature
The inhomogeneities of degree, and can control deflection, prevents central tube distortion, cracking.Central tube supporting construction is optimized, prevents center
Cylinder support scaling loss cracking causes central tube to drop, and can realize burner hearth low oxygen combustion, the fractional combustion of separator afterburning so that mends
The uniformity and time of contact that combustion wind mixes with flue gas are longer, reduce unburned carbon in flue dust.NOx original production can be greatly decreased simultaneously
Raw amount, more economically realizes NOx minimum discharge, gives full play to the advantage of Properties of CFB.
Brief description of the drawings：
For ease of explanation, the present invention is described in detail by following specific implementations and accompanying drawing.
Fig. 1 is overall structure diagram of the present invention；
Fig. 2 is top view of the present invention；
Fig. 3 is part A enlarged diagram.
In figure：1- central tube bodies；2- light thermal insulation pouring materials；3- air intake interfaces；4- stopping means；5- central tube branch
Support；6- steel pipe post pipes；7- conical outlet flues；8- disc hollow seats；9- round tubes are arranged；10- band steels；11- alumina silicate
Insulation material；12- corrugated platings；13- endless tubes；The cold screen of 14- separator vapour.
Embodiment：
To make the object, technical solutions and advantages of the present invention of greater clarity, below by the specific implementation shown in accompanying drawing
Example describes the present invention.However, it should be understood that these descriptions are merely illustrative, and it is not intended to limit the scope of the present invention.This
Outside, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring idea of the invention.
As Figure 1-3, the present invention provides a kind of technical scheme：Including central tube body 1, disc hollow seats 8, cone
Shape exhaust pass 7, air intake interface 3, central tube support 5 and the cold screen 14 of separator vapour, the circumferencial direction of the central tube body 1 by
Some compositions of round tube row 9, round tube use the welded seal of band steel 10, set inside central tube body 1 by longitudinal direction between arranging 9
The steel pipe post pipe 6 put and the endless tube 13 laterally set support, and the outside of central tube body 1 sets disc hollow seats 8,
The disc hollow seats 8 are welded and fixed with conical outlet flue 7, and several are evenly arranged with disc hollow seats 8
Air intake interface 3, the central tube body 1 are provided with several central tubes support 5, and central tube support 5, which suspends, to be placed in disc
On empty bearing 8, the stopping means 4 that corresponding central tube support 8 is set, the central tube sheet are installed on disc hollow seats 8
Flexible seal device is installed between body 1 and the cold screen 14 of separator vapour, the flexible seal device is by corrugated plating 12 and alumina silicate
Insulation material 11 is formed.
Specifically, round tube row 9, band steel 10, steel pipe post pipe 6 and endless tube 13 are made of refractory metal material,
Central tube body 1 plays structural support and air distribution using steel pipe post pipe 6 and endless tube 13, and circumferencial direction arranges 9 groups by round tube
Into round tube uses the welded seal of band steel 10 between arranging 9, forms the membrane type structure of central tube.Steel pipe post pipe 6 is longitudinal to center
The perforate exhaust of cylinder center of circle direction, perforate spacing is consistent with round tube 9 spacing of row and arranges 9 stagger arrangement with round tube.Inside and outside round tube row 9
Both sides laying light thermal insulation pouring material 2, is flushed with steel pipe post pipe 6.Disc hollow seats 8 weld with conical outlet flue 7
Fixed, and be evenly arranged air intake interface 3, connection is once or Secondary Air.Central tube support 5, which suspends, is placed in disc hollow seats 8
On, it is ensured that central tube free wxpansion.Being provided with disc hollow seats 8 prevents the spacing dress of central tube circumferencial direction displacement
Put 4.Multiple equally distributed central tube supports 5 form air intake passage with disc hollow seats 8, are formed with steel pipe post pipe 6
Cooling vane road.Corrugated plating 12 is installed between central tube body 1 and the cold screen 14 of separator vapour and aluminum silicate insulation material 11 is formed
Flexible seal device, can prevent heat smoke scurry into influence central tube support 5 and disc hollow seats 8 safety.
The CFBB air cooling membrane type central tube of the present invention is cooled down using Secondary Air, and central tube body passes through air intake
Interface accesses Secondary Air, breaks through traditional central tube without medium cooling, high-temperature flue gas dry-fire condition.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (4)
- A kind of 1. CFBB air cooling membrane type central tube, it is characterised in that：Including central tube body, the hollow branch of disc Seat, the support of conical outlet flue, air intake interface, central tube and the cold screen of separator vapour, the circumferencial direction of the central tube body by Some round tube row's compositions, round tube use band steel welded seal between arranging, and central tube body interior passes through longitudinally disposed Steel pipe post pipe and the endless tube support laterally set, the central tube outer body set disc hollow seats, the disk Shape hollow seats are welded and fixed with conical outlet flue, and several air intake interfaces, institute are evenly arranged with disc hollow seats State central tube body to support provided with several central tubes, central tube support suspension is placed on disc hollow seats, disc It is provided with hollow seats and corresponds to the stopping means that central tube support is set, between the cold screen of the central tube body and separator vapour Flexible seal device is installed, the flexible seal device is made up of corrugated plating and aluminum silicate insulation material.
- A kind of 2. CFBB air cooling membrane type central tube according to claim 1, it is characterised in that：The circle Pipe row, band steel, steel pipe post pipe and endless tube are made of refractory metal material.
- A kind of 3. CFBB air cooling membrane type central tube according to claim 1, it is characterised in that：The steel pipe To the direction perforate of the central tube center of circle, perforate spacing is consistent with round tube row's spacing and is arranged with round tube misarrangement for column tube longitudinal direction.
- A kind of 4. CFBB air cooling membrane type central tube according to claim 1, it is characterised in that：The circle Light thermal insulation pouring material is laid inside and outside pipe row, is flushed after auxiliary material with steel pipe post pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710830446.0A CN107575857A (en) | 2017-09-15 | 2017-09-15 | A kind of CFBB air cooling membrane type central tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710830446.0A CN107575857A (en) | 2017-09-15 | 2017-09-15 | A kind of CFBB air cooling membrane type central tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107575857A true CN107575857A (en) | 2018-01-12 |
Family
ID=61036137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710830446.0A Pending CN107575857A (en) | 2017-09-15 | 2017-09-15 | A kind of CFBB air cooling membrane type central tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107575857A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113883502A (en) * | 2021-11-10 | 2022-01-04 | 杭州智兴热电有限公司 | Heat preservation mechanism of circulating fluidized bed boiler |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201273563Y (en) * | 2008-09-08 | 2009-07-15 | 济南锅炉集团有限公司 | Steam-cooling center barrel |
| CN202570451U (en) * | 2012-03-15 | 2012-12-05 | 杭州能达华威设备有限公司 | Cooled central cylinder |
| CN203703954U (en) * | 2013-12-11 | 2014-07-09 | 贵州开磷（集团）有限责任公司 | Central cylinder structure of boiler cyclone separator |
| CN105927971A (en) * | 2016-06-15 | 2016-09-07 | 河南省锅炉压力容器安全检测研究院 | Membrane wall hearth structure for low-speed circulating fluidized bed boiler |
| CN206112912U (en) * | 2016-11-03 | 2017-04-19 | 中国电力工程顾问集团华北电力设计院有限公司 | A CFB boiler tertiary air center section of thick bamboo |
| CN206474310U (en) * | 2017-02-13 | 2017-09-08 | 中聚信海洋工程装备有限公司 | A kind of center cylinder of cyclone separator of air cooling heat transferring |
| CN207394827U (en) * | 2017-09-15 | 2018-05-22 | 内蒙古京泰发电有限责任公司 | A kind of air-cooled membrane type central tube of circulating fluidized bed boiler |
-
2017
- 2017-09-15 CN CN201710830446.0A patent/CN107575857A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201273563Y (en) * | 2008-09-08 | 2009-07-15 | 济南锅炉集团有限公司 | Steam-cooling center barrel |
| CN202570451U (en) * | 2012-03-15 | 2012-12-05 | 杭州能达华威设备有限公司 | Cooled central cylinder |
| CN203703954U (en) * | 2013-12-11 | 2014-07-09 | 贵州开磷（集团）有限责任公司 | Central cylinder structure of boiler cyclone separator |
| CN105927971A (en) * | 2016-06-15 | 2016-09-07 | 河南省锅炉压力容器安全检测研究院 | Membrane wall hearth structure for low-speed circulating fluidized bed boiler |
| CN206112912U (en) * | 2016-11-03 | 2017-04-19 | 中国电力工程顾问集团华北电力设计院有限公司 | A CFB boiler tertiary air center section of thick bamboo |
| CN206474310U (en) * | 2017-02-13 | 2017-09-08 | 中聚信海洋工程装备有限公司 | A kind of center cylinder of cyclone separator of air cooling heat transferring |
| CN207394827U (en) * | 2017-09-15 | 2018-05-22 | 内蒙古京泰发电有限责任公司 | A kind of air-cooled membrane type central tube of circulating fluidized bed boiler |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113883502A (en) * | 2021-11-10 | 2022-01-04 | 杭州智兴热电有限公司 | Heat preservation mechanism of circulating fluidized bed boiler |
| CN113883502B (en) * | 2021-11-10 | 2024-04-12 | 杭州智兴热电有限公司 | Thermal insulation mechanism of circulating fluidized bed boiler |
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