CN1683831A - Rotary air preheater - Google Patents
Rotary air preheater Download PDFInfo
- Publication number
- CN1683831A CN1683831A CNA2004100090080A CN200410009008A CN1683831A CN 1683831 A CN1683831 A CN 1683831A CN A2004100090080 A CNA2004100090080 A CN A2004100090080A CN 200410009008 A CN200410009008 A CN 200410009008A CN 1683831 A CN1683831 A CN 1683831A
- Authority
- CN
- China
- Prior art keywords
- plate
- axial
- radially
- air preheater
- slide plate
- 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.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 229910021383 artificial graphite Inorganic materials 0.000 claims abstract description 5
- 239000007770 graphite material Substances 0.000 claims abstract description 5
- 230000001172 regenerating effect Effects 0.000 claims description 17
- 238000005452 bending Methods 0.000 claims description 6
- 238000005192 partition Methods 0.000 abstract 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 8
- 239000003546 flue gas Substances 0.000 description 8
- 238000007493 shaping process Methods 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Air Supply (AREA)
Abstract
The sealing device for rotary air pre-heater includes contacting seal units between each radial partition and the sector board and the contacting seal units between each radial partition and axial board. Each of the contacting seal units includes arced spring board fixed to the radial partition and sealing slide board of synthetic graphite material and contacting the sector board or the axial board. The contacting seal unit is simple in structure, easy to install and maintain and may be used to replace or reinforce available sealing sheet to raise sealing performance of the pre-heater and the heat efficiency of the boiler.
Description
Technical field
The present invention relates to a kind of rotary regenerative air preheater, relate to a kind of sealing device in the rotary regenerative air preheater specifically, belong to the heat-exchange apparatus in the heat power plant boiler unit.
Background technology
Rotary regenerative air preheater is to utilize the hot flue gas heating that the coal-burning boiler afterbody is discharged in the thermal power plant to enter a kind of heat-exchange device of the cold air temperature of boiler auxiliary combustion.This device is by being contained in epitrochanterian large tracts of land heat transfer element, along with the rotation continuously of rotor, the heat of the hot flue gas of discharging and the cold air that enters is alternately carried out heat exchange.Columnar rotor radially is separated into not connected plurality of sector storehouse with dividing plate from top to bottom, and each fan-shaped storehouse is divided into plurality of sections again.Flue gas or air circulate up and down by the slit of heat transfer element.Thereby with two fanning strips whole cross section is divided into flue gas Circulation Area, circulation of air district and seal area three parts accordingly up and down, and the flue gas that neither circulates in the seal area, also ventilating air not, thereby flue gas can not mix mutually with air.But since gapped between rotor and fanning strip and the shell, owing to have sizable pressure differential between air and the flue gas, make the problem of leaking out of rotary regenerative air preheater become particularly outstanding simultaneously.The main cause that rotary air preheater air leak is big is the thermal deformation of preheater, causes that the seal area intermediate gap is excessive, i.e. excesssive gap between apex seal and the fanning strip; Excesssive gap between axial seal sheet and the barrel shrond.Air leak rate of air curtain is to weigh an important indicator of rotary regenerative air preheater technical merit.Solving the problem of leaking out at present is in advance by the hot shaping parameter of calculating, reserve the thermal deformation gap, promptly according to this parameter adjust respectively be installed on the dividing plate radially radially or axial seal sheet and fanning strip or the axial distance between the plate, make hot down, seal clearance amount minimum.But it is, this very inaccurate according to the hot shaping parameter of calculating because the hot shaping of preheater is subjected to the influence of several factors.Obviously, preset clearance is excessive, and hot leakage in service is rather windy; Preset clearance is too small, makes dynamic and static part bump again, influences the normal operation of equipment.
Summary of the invention
The objective of the invention is in order to overcome the defective of prior art, a kind of air leak rate of air curtain that can reduce preheater effectively is provided, improve the rotary regenerative air preheater of heat exchanger effectiveness.
Rotary regenerative air preheater of the present invention, comprise the cylindric rotor that rotates around central shaft, this rotor comprises several dividing plate plurality of sector storehouses of separating radially of fixedlying connected with central shaft, in the straight classical prescription of rotor 4 or 6 fanning strips is installed symmetrically up and down; Fixedly connected with rotor case 2 or 3 blocks of axial plates are vertically mounted on respectively between upper and lower two fanning strips; Wherein radially between the upper and lower limit of dividing plate and the fanning strip contact type sealing device is installed at each; On each axial limit of dividing plate outer rim and axially between the plate contact type sealing device is installed radially.
Rotary regenerative air preheater of the present invention, wherein contact type sealing device comprises that an end is fixed on radially the upper and lower limit of dividing plate or the arc spring plate on the axial limit of outer rim, the other end of this latch plate and groove type slide plate cover bottom centre are connected and fixed; Slide plate cover openend both sides are provided with the bending edges that bends towards in the groove; It is equipped that the drop bar both sides of being made by the synthetic graphite material have the bending edges that draw-in groove and slide plate put; Slide plate and fanning strip or axial plate contact jaw both sides are provided with the inclined plane.
Rotary regenerative air preheater of the present invention, the contact jaw of its middle slide plate and fanning strip or axial plate is a circular arc.
The contact type sealing device that designs in the rotary regenerative air preheater of the present invention, simple in structure, be easy for installation and maintenance again; It can replace original apex seal or axial seal sheet fully, also can be installed on original apex seal or the axial seal sheet, the drop bar and the resistant to elevated temperatures stainless steel spring sheet material that adopt the synthetic graphite material to make, eliminate effectively rotor because of temperature distortion produced radially or axial gap, and the defective that causes leaking out and increase, directly leaking out of preheater reduced widely, only exist to carry and leak out; The air leak rate of air curtain of whole preheater is controlled at below 3%, has improved the thermal efficiency of boiler, has tangible economic benefit.
Description of drawings
Fig. 1 is a rotary regenerative air preheater rotor structural representation sketch;
Fig. 2 overlooks and the A-A generalized section for Fig. 1's;
Fig. 3 radially connects generalized section for contact type sealing device of the present invention;
Fig. 4 axially connects generalized section for contact type sealing device of the present invention.
The specific embodiment
By Fig. 1, Fig. 2 as seen, comprise the cylindric rotor that rotates around central shaft 9 in the rotary regenerative air preheater rotor structure, this rotor radially is made up of in the dividing plate 1 plurality of sector storehouse of being separated several of fixedlying connected with central shaft 9, each fan-shaped storehouse is divided into plurality of sections again, fill the heat transfer element of making by metal corrugated plate in the fan-shaped storehouse, claim heat accumulation plate again, hot flue gas and cold air circulate up and down by the slit of heat transfer element and carry out heat exchange.For the rotary regenerative air preheater in three fens storehouses,, radially between the upper and lower limit of dividing plate 1 and the fanning strip 2 contact type sealing device 3 is installed at each at upper and lower each 3 fanning strip 2 of installing symmetrically of the diametric(al) of rotor; 3 blocks of axial plates 4 of fixedlying connected with preheater shell 10 are vertically mounted on respectively between upper and lower two fanning strips 2, on each the radially axial limit of dividing plate 1 outer rim and axially installation contact type sealing device 3 between the plate 4.
By Fig. 3 or Fig. 4 as seen, contact type sealing device 3 of the present invention comprises that an end is fixed on radially dividing plate 1 upper and lower limit or axially the arc spring plate 5 on limit, and the other end of this latch plate 5 and groove type slide plate overlap 6 bottom centre and be connected and fixed; Slide plate overlaps 6 openend both sides and is provided with the bending edges 7 that bends towards in the groove; The bending edges 7 that drop bar 8 both sides of being made by the synthetic graphite material have on draw-in groove and the slide plate cover 6 is equipped; Slide plate 8 is provided with the inclined plane with fanning strip 2 or axial plate 4 contact jaw both sides; Latch plate 5 is selected for use resistant to elevated temperatures elastic stainless steel to bend to arc and is made.
Claims (3)
1, rotary regenerative air preheater, comprise the cylindric rotor that rotates around central shaft (9), this rotor comprises several dividing plate (1) plurality of sector storehouses of being separated radially of fixedlying connected with central shaft (9), in the straight classical prescription of rotor 4 or 6 fanning strips (2) is installed symmetrically up and down; Fixedly connected with preheater shell (10) 2 or 3 blocks of axial plates (4) are vertically mounted on respectively between upper and lower two fanning strips (2); It is characterized in that described each radially between the upper and lower limit of dividing plate (1) and the described fanning strip (2) contact type sealing device (3) is installed; Described each radially between the axial limit of dividing plate (1) outer rim and the described axial plate (4) contact type sealing device (3) is installed.
2, rotary regenerative air preheater according to claim 1, it is characterized in that described contact type sealing device (3) comprises that an end is fixed on the upper and lower limit of described radially dividing plate (1) or the arc spring plate (5) on the axial limit of outer rim, the other end of this latch plate (5) and groove type slide plate cover (6) bottom centre are connected and fixed; Described slide plate cover (6) openend both sides are provided with the bending edges (7) that bends towards in the groove; The bending edges (7) that drop bar (8) both sides of being made by the synthetic graphite material have on draw-in groove and the described slide plate cover (6) is equipped; Described slide plate (8) is provided with the inclined plane with described fanning strip (2) or described axial plate (4) contact jaw both sides.
3, rotary regenerative air preheater according to claim 2 is characterized in that the described slide plate (8) and the contact jaw of described fanning strip (2) or described axial plate (4) are circular arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100090080A CN1308644C (en) | 2004-04-13 | 2004-04-13 | Rotary air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100090080A CN1308644C (en) | 2004-04-13 | 2004-04-13 | Rotary air preheater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1683831A true CN1683831A (en) | 2005-10-19 |
| CN1308644C CN1308644C (en) | 2007-04-04 |
Family
ID=35263262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100090080A Expired - Fee Related CN1308644C (en) | 2004-04-13 | 2004-04-13 | Rotary air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1308644C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022543A (en) * | 2010-11-26 | 2011-04-20 | 北京化工大学 | Corrugated elastic seal and rotary air pre-heater sealing device |
| CN102624171A (en) * | 2012-03-30 | 2012-08-01 | 上海锅炉厂有限公司 | Manufacturing mold and method of preheating module of air preheating rotor |
| CN103471129A (en) * | 2013-08-22 | 2013-12-25 | 宁波天生密封件有限公司 | Rotary air-preheater resilient compensation sealing device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5145011A (en) * | 1989-07-19 | 1992-09-08 | NGK Insulations, Ltd. | Sealing members for use in gas preheater |
| US5234048A (en) * | 1991-01-14 | 1993-08-10 | Ngk Insulators, Ltd. | Sealing members for gas preheaters, and sealing structures using such sealing members for gas preheaters |
| US5915339A (en) * | 1995-06-29 | 1999-06-29 | Abb Air Preheater Inc. | Sector plate and seal arrangement for trisector air preheater |
| WO1997041391A1 (en) * | 1996-05-02 | 1997-11-06 | Wayne Kozacka | Improved sealing element for a regenerative heat exchanger |
| CN2690840Y (en) * | 2004-04-13 | 2005-04-06 | 孟金来 | Rotary air preheater |
-
2004
- 2004-04-13 CN CNB2004100090080A patent/CN1308644C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022543A (en) * | 2010-11-26 | 2011-04-20 | 北京化工大学 | Corrugated elastic seal and rotary air pre-heater sealing device |
| CN102624171A (en) * | 2012-03-30 | 2012-08-01 | 上海锅炉厂有限公司 | Manufacturing mold and method of preheating module of air preheating rotor |
| CN102624171B (en) * | 2012-03-30 | 2013-12-25 | 上海锅炉厂有限公司 | Manufacturing mold and method of preheating module of air preheating rotor |
| CN103471129A (en) * | 2013-08-22 | 2013-12-25 | 宁波天生密封件有限公司 | Rotary air-preheater resilient compensation sealing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1308644C (en) | 2007-04-04 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING HUANENGDA POWER TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: MENG JINLAI Effective date: 20130627 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Free format text: CORRECT: ADDRESS; FROM: 100076 FENGTAI, BEIJING TO: 100052 XICHENG, BEIJING |
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| TR01 | Transfer of patent right |
Effective date of registration: 20130627 Address after: 100052 Beijing city Xicheng District Xuanwu Street on the 1st a global SEEC center B block M layer Patentee after: Beijing Huanengda Electric Power Technology Application Co.,Ltd. Address before: 100076, No. 12, building 1501, a North Zone, Nanyuan, Beijing, Fengtai District Patentee before: Meng Jinlai |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Rotary air preheater with brush type sealing device Effective date of registration: 20140814 Granted publication date: 20070404 Pledgee: Zhongguancun Beijing technology financing Company limited by guarantee Pledgor: Meng Jinlai|Beijing Huanengda Electric Power Technology Application Co.,Ltd. Registration number: 2014990000657 |
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| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20150727 Granted publication date: 20070404 Pledgee: Zhongguancun Beijing technology financing Company limited by guarantee Pledgor: Meng Jinlai|Beijing Huanengda Electric Power Technology Application Co.,Ltd. Registration number: 2014990000657 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Rotary air preheater with brush type sealing device Effective date of registration: 20150730 Granted publication date: 20070404 Pledgee: Zhongguancun Beijing technology financing Company limited by guarantee Pledgor: Meng Jinlai|Beijing Huanengda Electric Power Technology Application Co.,Ltd. Registration number: 2015990000622 |
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| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20160901 Granted publication date: 20070404 Pledgee: Zhongguancun Beijing technology financing Company limited by guarantee Pledgor: Meng Jinlai|Beijing Huanengda Electric Power Technology Application Co.,Ltd. Registration number: 2015990000622 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Rotary air preheater with brush type sealing device Effective date of registration: 20160901 Granted publication date: 20070404 Pledgee: Zhongguancun Beijing technology financing Company limited by guarantee Pledgor: Beijing Huanengda Electric Power Technology Application Co.,Ltd.|Meng Jinlai Registration number: 2016990000765 |
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| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070404 Termination date: 20200413 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220802 Granted publication date: 20070404 Pledgee: Zhongguancun Beijing technology financing Company limited by guarantee Pledgor: Beijing Huanengda Electric Power Technology Application Co.,Ltd. Registration number: 2016990000765 |