CN112709984A - Novel external heat exchanger for CFB boiler - Google Patents
Novel external heat exchanger for CFB boiler Download PDFInfo
- Publication number
- CN112709984A CN112709984A CN202011630492.4A CN202011630492A CN112709984A CN 112709984 A CN112709984 A CN 112709984A CN 202011630492 A CN202011630492 A CN 202011630492A CN 112709984 A CN112709984 A CN 112709984A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- cfb boiler
- external heat
- tube group
- heating surface
- 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
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 description 4
- 238000009991 scouring Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
- F23C10/24—Devices for removal of material from the bed
- F23C10/26—Devices for removal of material from the bed combined with devices for partial reintroduction of material into the bed, e.g. after separation of agglomerated parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
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- 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
- F28F9/007—Auxiliary supports for elements
- F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model provides a novel external heat exchanger for CFB boiler, it relates to an external heat exchanger, concretely relates to novel external heat exchanger for CFB boiler. The invention aims to solve the problems that the arrangement direction of a heating surface in the existing external heat exchanger is vertical to the material flowing direction, and if a gap is left in the installation of a fixed clamping block, the pipe is easily seriously abraded. The invention comprises a heat exchanger shell and a heat exchange tube group, wherein the heat exchange tube group is arranged in the heat exchanger shell; the heating surface tube group of the heat exchange tube group positioned in the heat exchanger shell is arranged in a bow shape. The invention belongs to the field of boiler equipment.
Description
Technical Field
The invention relates to an external heat exchanger, in particular to a novel external heat exchanger for a CFB boiler, and belongs to the field of boiler equipment.
Background
When the external heat exchanger of the CFB boiler operates at present, a large amount of circulating ash transversely scours heating surface tubes, so that the heating surface tubes are abraded, and the safe and stable operation is influenced. The arrangement direction of a heating surface in an external heat exchanger in the prior art is vertical to the material flowing direction, and if a gap is reserved in the installation of a fixed clamping block, severe abrasion is easily caused to a pipe.
Disclosure of Invention
The invention provides a novel external heat exchanger for a CFB boiler, aiming at solving the problems that the arrangement direction of a heating surface in the conventional external heat exchanger is vertical to the material flowing direction, and if a gap is reserved for installing a fixed clamping block, the pipe is easily and seriously abraded.
The technical scheme adopted by the invention for solving the problems is as follows: the invention comprises a heat exchanger shell and a heat exchange tube group, wherein the heat exchange tube group is arranged in the heat exchanger shell; the heating surface tube group of the heat exchange tube group positioned in the heat exchanger shell is arranged in a bow shape.
Furthermore, the invention also comprises a plurality of fixed clamping blocks, and the heating surface tube group is fixed in the heat exchanger shell through the plurality of fixed clamping blocks.
Furthermore, a plurality of fixed fixture blocks are divided into two groups and arranged in parallel in the shell of the heat exchanger side by side.
Furthermore, the heating surface tube group is composed of a plurality of tube bundles, and each tube bundle is fixed in the shell of the heat exchanger through a fixed clamping block.
Furthermore, the invention also comprises a plurality of external fixing clamping blocks, and the part of the upper part of the heat exchange tube group, which is positioned outside the heat exchanger shell, is regulated on the wall through the plurality of external fixing clamping blocks.
The invention has the beneficial effects that: the arrangement direction of the heating surface pipes of the invention is along the circulating ash flowing direction, and the fluidization speed in the external heat exchanger is strictly controlled by reasonably selecting the pitch between the heating surface pipes, so that the circulating ash flows more stably and smoothly between the heating surface pipes, the transverse scouring abrasion of the heating surface pipes caused by the circulating ash flow is avoided, the vibration of the heating surface pipes can be prevented, and the local abrasion of the contact part between the fixed clamping block and the heating surface pipes is effectively prevented.
Drawings
Fig. 1 is an overall structural schematic of the present invention.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1, and the novel external heat exchanger for a CFB boiler in the embodiment includes a heat exchanger shell 1 and a heat exchange tube set 2, wherein the heat exchange tube set 2 is installed in the heat exchanger shell 1; the heat exchange tube group 2 is positioned in the heat exchanger shell 1, and the heating surface tube group 2-1 is arranged in a bow shape.
The arrangement direction of the heating surface tube group 2-1 in the present embodiment is along the flow direction 5 of the circulating ash in the heat exchanger shell 1.
The second embodiment is as follows: referring to fig. 1, the present embodiment is described, and the novel external heat exchanger for a CFB boiler according to the present embodiment further includes a plurality of fixing blocks 3, and the heating surface tube group 2-1 is fixed in the heat exchanger housing 1 through the plurality of fixing blocks 3. Other components and connections are the same as those in the first embodiment.
The third concrete implementation mode: referring to fig. 1, the embodiment is described, and a plurality of fixed blocks 3 of the novel external heat exchanger for a CFB boiler according to the embodiment are arranged in parallel in a heat exchanger housing 1 in two groups. Other components and connection relationships are the same as those in the second embodiment.
The fourth concrete implementation mode: the embodiment is described with reference to fig. 1, and the heating surface tube group 2-1 of the novel external heat exchanger for the CFB boiler according to the embodiment is composed of a plurality of tube bundles 2-1-1, and each tube bundle 2-1-1 is fixed in the heat exchanger shell 1 by a fixing fixture block 3. Other components and connections are the same as those in the first embodiment.
The fifth concrete implementation mode: the embodiment is described with reference to fig. 1, and the novel external heat exchanger for the CFB boiler according to the embodiment further includes a plurality of external fixing blocks 4, and a portion of the upper portion of the heat exchange tube set 2 located outside the heat exchanger shell 1 is defined on the wall through the plurality of external fixing blocks 4. Other components and connections are the same as those in the first embodiment.
Principle of operation
The invention changes the arrangement direction of the heating surface pipes into the direction parallel to the circulating ash flow, avoids the serious abrasion of the heating surface pipes caused by transverse scouring and reduces the vibration of the pipe rows.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (5)
1. A novel external heat exchanger for a CFB boiler comprises a heat exchanger shell (1) and a heat exchange tube set (2), wherein the heat exchange tube set (2) is arranged in the heat exchanger shell (1); the method is characterized in that: the heat exchange tube group (2) is positioned in the heat exchanger shell (1), and the heating surface tube group (2-1) is arranged in a bow shape.
2. The novel external heat exchanger for a CFB boiler of claim 1, wherein: the novel external heat exchanger for the CFB boiler further comprises a plurality of fixing clamping blocks (3), and the heating surface tube group (2-1) is fixed in the heat exchanger shell (1) through the fixing clamping blocks (3).
3. The novel external heat exchanger for a CFB boiler of claim 2, wherein: a plurality of fixed fixture blocks (3) are divided into two groups and arranged in parallel in the heat exchanger shell (1).
4. The novel external heat exchanger for a CFB boiler of claim 1, wherein: the heating surface tube group (2-1) is composed of a plurality of tube bundles (2-1-1), and each tube bundle (2-1-1) is fixed in the heat exchanger shell (1) through a fixed clamping block (3).
5. The novel external heat exchanger for a CFB boiler of claim 1, wherein: the novel external heat exchanger for the CFB boiler further comprises a plurality of external fixing fixture blocks (4), and the part, located outside the heat exchanger shell (1), of the upper portion of the heat exchange tube set (2) is specified on the wall through the plurality of external fixing fixture blocks (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011630492.4A CN112709984A (en) | 2020-12-30 | 2020-12-30 | Novel external heat exchanger for CFB boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011630492.4A CN112709984A (en) | 2020-12-30 | 2020-12-30 | Novel external heat exchanger for CFB boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112709984A true CN112709984A (en) | 2021-04-27 |
Family
ID=75547729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011630492.4A Pending CN112709984A (en) | 2020-12-30 | 2020-12-30 | Novel external heat exchanger for CFB boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112709984A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1471561A (en) * | 1973-09-21 | 1977-04-27 | Rech Et Dactivites Petrolieres | Method for continuous sampling of a mixture |
| CN101290197A (en) * | 2008-06-06 | 2008-10-22 | 重庆大学 | Heat exchanger using river water as cooling medium |
| CN201521951U (en) * | 2009-09-29 | 2010-07-07 | 哈尔滨锅炉厂有限责任公司 | External mixed flowing heat exchange device for circulating fluidized bed boiler |
| CN103672875A (en) * | 2013-12-17 | 2014-03-26 | 东方电气集团东方锅炉股份有限公司 | External heat exchanger |
| CN103912863A (en) * | 2014-03-28 | 2014-07-09 | 无锡华光锅炉股份有限公司 | Suspension apparatus for fixing coiled pipe system |
| CN204201864U (en) * | 2014-11-04 | 2015-03-11 | 大唐韩城第二发电有限责任公司 | A kind of four main tubes of boiler shoe |
| CN104534451A (en) * | 2015-01-26 | 2015-04-22 | 河北大唐国际丰润热电有限责任公司 | Novel coal economizer for denitrification system of boiler unit |
| CN205535772U (en) * | 2016-04-01 | 2016-08-31 | 东方电气集团东方锅炉股份有限公司 | Circulating fluidized bed boiler external heat exchanger |
| CN106123657A (en) * | 2016-06-20 | 2016-11-16 | 浙江浙能台州第二发电有限责任公司 | Heat medium water tubular type flue gas heat-exchange unit |
| CN106195980A (en) * | 2016-08-24 | 2016-12-07 | 北京热华能源科技有限公司 | A kind of pendant superheater and the multipath circulating fluidized bed boiler of application thereof |
| CN209263351U (en) * | 2018-12-11 | 2019-08-16 | 江苏诺温特热能设备有限公司 | A kind of full premixed condensed heat exchanger of wall-hanging boiler |
| CN210625448U (en) * | 2019-07-15 | 2020-05-26 | 青岛奥特斯机电系统工程有限公司 | Heat exchange coil fixing device convenient to dismantle |
| CN210861815U (en) * | 2019-07-08 | 2020-06-26 | 江苏狼王机械科技有限公司 | High-efficiency evaporator |
-
2020
- 2020-12-30 CN CN202011630492.4A patent/CN112709984A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1471561A (en) * | 1973-09-21 | 1977-04-27 | Rech Et Dactivites Petrolieres | Method for continuous sampling of a mixture |
| CN101290197A (en) * | 2008-06-06 | 2008-10-22 | 重庆大学 | Heat exchanger using river water as cooling medium |
| CN201521951U (en) * | 2009-09-29 | 2010-07-07 | 哈尔滨锅炉厂有限责任公司 | External mixed flowing heat exchange device for circulating fluidized bed boiler |
| CN103672875A (en) * | 2013-12-17 | 2014-03-26 | 东方电气集团东方锅炉股份有限公司 | External heat exchanger |
| CN103912863A (en) * | 2014-03-28 | 2014-07-09 | 无锡华光锅炉股份有限公司 | Suspension apparatus for fixing coiled pipe system |
| CN204201864U (en) * | 2014-11-04 | 2015-03-11 | 大唐韩城第二发电有限责任公司 | A kind of four main tubes of boiler shoe |
| CN104534451A (en) * | 2015-01-26 | 2015-04-22 | 河北大唐国际丰润热电有限责任公司 | Novel coal economizer for denitrification system of boiler unit |
| CN205535772U (en) * | 2016-04-01 | 2016-08-31 | 东方电气集团东方锅炉股份有限公司 | Circulating fluidized bed boiler external heat exchanger |
| CN106123657A (en) * | 2016-06-20 | 2016-11-16 | 浙江浙能台州第二发电有限责任公司 | Heat medium water tubular type flue gas heat-exchange unit |
| CN106195980A (en) * | 2016-08-24 | 2016-12-07 | 北京热华能源科技有限公司 | A kind of pendant superheater and the multipath circulating fluidized bed boiler of application thereof |
| CN209263351U (en) * | 2018-12-11 | 2019-08-16 | 江苏诺温特热能设备有限公司 | A kind of full premixed condensed heat exchanger of wall-hanging boiler |
| CN210861815U (en) * | 2019-07-08 | 2020-06-26 | 江苏狼王机械科技有限公司 | High-efficiency evaporator |
| CN210625448U (en) * | 2019-07-15 | 2020-05-26 | 青岛奥特斯机电系统工程有限公司 | Heat exchange coil fixing device convenient to dismantle |
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| Date | Code | Title | Description |
|---|---|---|---|
| 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 |
Application publication date: 20210427 |
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| RJ01 | Rejection of invention patent application after publication |