CN104613493B - A kind of rotary regenerative air preheater fanning strip - Google Patents
A kind of rotary regenerative air preheater fanning strip Download PDFInfo
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- CN104613493B CN104613493B CN201510036507.7A CN201510036507A CN104613493B CN 104613493 B CN104613493 B CN 104613493B CN 201510036507 A CN201510036507 A CN 201510036507A CN 104613493 B CN104613493 B CN 104613493B
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- plate
- air preheater
- fanning strip
- sealing
- rotary regenerative
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- 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
Abstract
The present invention relates to a kind of rotary regenerative air preheater fanning strip，It is fixedly installed in air preheater rotor top，Diaphragm seal is provided with the air preheater rotor，The fanning strip includes upper mounted plate and connecting plate，A fixed I-steel that can play connection supporting role is fixedly installed between fixed plate and connecting plate，Multigroup key type sealing plate structure that can be contacted is provided with diaphragm seal in the connecting plate bottom，Be provided between the key type sealing plate structure and connecting plate both sides that a band is slidingly sealed bar is slidingly sealed bar hole，The side panel of the key type sealing plate structure passes through and is slidingly sealed bar hole and can freely slide up and down in which，This rotary regenerative air preheater fanning strip is using similar piano type structure，Good deforming contact can be produced between diaphragm seal，Thus largely reduce the air leak rate of air curtain of rotary regenerative air preheater，The fanning strip overall structure is simple，Installation is easy to make and practicality is high.
Description
Technical field：
The present invention relates to the rotary regenerative air preheater fanning strip on a kind of thermal power generation unit.
Background technology：
Rotary regenerative air preheater as thermal power generation unit flue gas and air heat-exchange equipment for thermal power generation unit
Generating efficiency have extreme influence, except rotary regenerative air preheater heat transfer element heat storage capacity affect heat exchange efficiency, another
The size of index air leak rate of air curtain also exchanges the thermal efficiency to be had than large effect, and rotary air preheater air leak rate is except affecting to change
The thermal efficiency, also affects a secondary air temperature, air quantity, so as to affect unit efficiency of combustion, in addition, rotary air preheater air leak rate
Increasing can affect rotary regenerative air preheater exhaust gas temperature aggravation cold end corrosion and block up ash, and the conventional sector plate in current industry is
The fixed structure for not possessing backlash compensation, the gap of diaphragm seal and fanning strip when rotary regenerative air preheater rotor thermal deformation
Increase will be directly affected rotary air preheater air leak rate, leaked out using the rotary regenerative air heater of this kind of fanning strip according to statistics
Rate is typically more than 8%, additionally, rotary regenerative air preheater Sealing Technology main direction of studying is on apex seal, for example
Install hinge-type flexible contact type black box on diaphragm seal additional, the length of the component is generally per section of 50-100cm, if fixed
Formula fanning strip itself out-of-flatness (such case is very universal), the component of the seal form can go out the feelings of part and fanning strip contact
Condition, is not to completely attach to, and another kind of technology is the seal form that gas leakage is reclaimed, and installs induced draught system additional by fanning strip grooved bore
The Air leakage control that rotary regenerative air preheater is realized in secondary wind side is suctioned out leaking out and is sent back to, but the technology is in actual applications
It is difficult to control to suck back the wind that misses just, a large amount of flue gases are usually siphoned away to secondary wind side, can so reduce the heat exchange of air preheater
Efficiency, the system fan energy consumption is higher, complex structure, operation expense high.
Content of the invention：
The technical problem to be solved is to provide a kind of simple structure, fabrication and installation are convenient and effectively can reduce
Rotary air preheater air leak rate, the fanning strip for improving air preheater heat exchange efficiency.
In order to solve above-mentioned technical problem, the present invention is achieved by the following technical solutions：A kind of swinging air is pre-
Hot device fanning strip, is fixedly installed in air preheater rotor top, is provided with diaphragm seal, institute on the air preheater rotor
Stating fanning strip includes upper mounted plate and the connecting plate below upper mounted plate, between fixed plate and connecting plate
A fixed I-steel that can play connection supporting role is fixedly installed, is provided with the connecting plate bottom and multigroup can be connect with diaphragm seal
Tactile key type sealing plate structure, between the key type sealing plate structure and connecting plate both sides is provided with a band and is slidingly sealed
Bar is slidingly sealed bar hole, and the side panel of the key type sealing plate structure is through being slidingly sealed bar hole and can be in which in freedom
Lower slider.
Preferably, for making between the base plate in sealing contact and diaphragm seal of the rotary regenerative air preheater fanning strip bottom
Can realize that effectively contact sealing, the key type sealing plate structure include to contact with diaphragm seal according to actual thermal deformation situation
Base plate in sealing contact, be slidingly sealed side plate, key side plate and the limit spring on base plate in sealing contact and support bar,
It is connected between the support bar bottom and base plate in sealing contact, is provided with the connecting plate and wears for post upper portion
The spacing hole that crosses, the limit spring are interspersed on support bar and elastic telescopic can live between base plate in sealing contact and connecting plate
Dynamic, the side plate that is slidingly sealed can be freely slided up and down being slidingly sealed in bar hole, and the key side plate is vertically fixed on sealing
Contact base plate rear ends and it is connected with the side for being slidingly sealed side plate.
Preferably, for keeping preferable sealing property between making the key type sealing plate, in multigroup key type
Multiple intermediate sealing strips are provided between sealing plate structure.
Preferably, for making sealing effectiveness between the rotary regenerative air preheater and diaphragm seal, more preferably, the sealing connects
The width for bottoming out plate is set to 35cm.
Preferably, for enabling the limit spring that there is optimal elastic thrust scope to base plate in sealing contact, described
Limit spring is set to the Elastic penetration of 1-4cm in an initial condition.
Preferably, in order to reduce frictional force and abrasion between diaphragm seal and base plate in sealing contact, at bottom in sealing contact
Plate surface is provided with one layer of laser melting coating and thickness is 1-2mm metal-cermic coatings.
Compared with prior art, usefulness of the present invention is：This rotary regenerative air preheater fanning strip is using similar
Piano type structure, can be produced good deforming contact between diaphragm seal, thus largely reduce swinging air
The air leak rate of air curtain of preheater, in addition the backplate surface in sealing contact processed by ceramic metal laser melting and coating technique, have high
Wearability, extremely low coefficient of friction, increase the service life, and therefore, the fanning strip overall structure is simple, and installation is easy to make,
With low cost and practicality is high.
Description of the drawings：
The present invention is further described below in conjunction with the accompanying drawings.
Fig. 1 is the axle side structure schematic diagram when present invention does not install upper mounted plate and connecting plate
Fig. 2 is the part main structure diagram when present invention is arranged on rotor
Fig. 3 is the overlooking the structure diagram when present invention does not install upper mounted plate and connecting plate
Fig. 4 is the mplifying structure schematic diagram at A of the present invention
Fig. 5 is the overlooking the structure diagram when present invention is arranged on rotor
In figure：1st, air preheater rotor 2, diaphragm seal 3, upper mounted plate 4, connecting plate 5, fixed I-steel 6, qin
Of bonding sealing plate structure 61, base plate in sealing contact 62, be slidingly sealed side plate 63, key side plate 64, limit spring 65,
Strut 7, it is slidingly sealed bar 8, is slidingly sealed bar hole 9, spacing hole 10, intermediate sealing strip
Specific embodiment：
Below in conjunction with the accompanying drawings and specific embodiment describes the present invention：
A kind of rotary regenerative air preheater fanning strip, is fixedly installed on air preheater rotor 1 as shown in Figures 1 to 5
Portion, is provided with diaphragm seal 2 on the air preheater rotor 1, and the fanning strip includes upper mounted plate 3 and is located at upper fixation
Connecting plate 4 below plate 3, is fixedly installed one between fixed plate 3 and connecting plate 4 and can play connection supporting role
Fixed I-steel 5, is provided with multigroup key type sealing plate structure 6, the key type sealing plate structure 6 in 4 bottom of the connecting plate
Including can contact with diaphragm seal 2 base plate in sealing contact 61, be slidingly sealed side plate 62, key side plate 63 and be located in sealing contact
Limit spring 64 and support bar 65 on base plate 61, for making sealing effectiveness between the rotary regenerative air preheater and diaphragm seal 2
More preferably, the width of the base plate in sealing contact 61 is set to 35cm, and in order to reduce diaphragm seal 2 and base plate in sealing contact 61 it
Between frictional force and abrasion, 61 surface of base plate in sealing contact be provided with one layer of laser melting coating and thickness be 1-2mm ceramic metals apply
Layer, is connected between 65 bottom of the support bar and base plate in sealing contact 61, is provided with and supplies support bar on the connecting plate 4
The spacing hole 9 that 65 upper ends pass through, the limit spring 64 are interspersed on support bar 65 and can be in base plate in sealing contact 61 and companies
Elastic telescopic activity between fishplate bar 4, and the limit spring 64 is set to the Elastic penetration of 1-4cm in an initial condition, because
And enable the limit spring 64 that there is optimal elastic thrust scope to base plate in sealing contact 61, in addition, as shown in figure 4,
Be provided between the key type sealing plate structure 6 and 4 both sides of connecting plate that a band is slidingly sealed bar 7 is slidingly sealed bar hole 8,
The key type sealing plate structure 6 is slidingly sealed side plate 62 through being slidingly sealed bar hole 8 and can freely slide up and down in which,
Furthermore, multiple intermediate sealing strips 10 are provided between multigroup key type sealing plate structure 6, so that the key type is close
Preferable sealing property can be kept between closing plate structure 6.
In actual applications, specific embodiment is as follows：It is that generating set is being run and returned in an initial condition
Rotary air preheater rotor 1 does not start rotation when carrying out heat exchange, the limit spring 64 on the key type sealing plate structure 6
The Elastic penetration of 1-4cm is provided with, thus the base plate in sealing contact 61 has a range of bullet to the diaphragm seal 2 of its underpart
Property pressure, therefore, when generating set brings into operation, the air preheater rotor 1 can produce heat in hot running
Deformation, thus the gap between apex seal 2 and the fanning strip can be increased, and the now key type of the fanning strip bottom
Sealing plate structure 6 is slidingly sealed side plate 62 and base plate in sealing contact described in then causing under the effect of the elastic force of limit spring 64
61 are moved downward and are in close contact with diaphragm seal 2, so as to reach the purpose for reducing that gap keeps sealing, due to being slidingly sealed bar
One is provided with hole 8 and is slidingly sealed bar 7, thus sealing can be effectively ensured, and due to adopting multiple key type sealing plate structures
The device of combination, thus between working as between fanning strip out-of-flatness itself or the irregular caused fanning strip of thermal deformation and diaphragm seal 2
When gap is not of uniform size, each group key type sealing plate structure 6 can carry out automatically independent adjustment according to its corresponding gap length
Respective position of base plate in sealing contact 61, close so as to ensure that being fully contacted for each position between the fanning strip and diaphragm seal 2
Envelope, reaches compensation purpose automatically, and is additionally provided with intermediate sealing strip 10 between each group key type sealing plate structure 6, thus enter one
Step ensure that the sealing property of the fanning strip, and above-mentioned rotary regenerative air preheater fanning strip, can using similar piano type structure
So that good deforming contact is produced between diaphragm seal 2, thus largely reduce leaking out for rotary regenerative air preheater
Rate, in addition 61 surface of base plate in sealing contact processed by ceramic metal laser melting and coating technique, have high wearability, extremely low
Coefficient of friction, increase the service life, therefore, the fanning strip overall structure is simple, install easy to make, with low cost and real
High with property.
It is emphasized that：The above is only presently preferred embodiments of the present invention, not the present invention is made any formal
Restriction, every technical spirit any simple modification, equivalent variations and modification that above example is made according to the present invention,
Still fall within the range of technical solution of the present invention.
Claims (5)
1. a kind of rotary regenerative air preheater fanning strip, is fixedly installed in air preheater rotor (1) top, pre- in the air
Diaphragm seal (2) is provided with hot device rotor (1), it is characterised in that：The fanning strip includes upper mounted plate (3) and is located at upper solid
Connecting plate (4) below fixed board (3), between fixed plate (3) and connecting plate (4) is fixedly installed one and can play connection
The fixed I-steel (5) of supporting role, is provided with multigroup key type that can be contacted with diaphragm seal (2) in the connecting plate (4) bottom
Sealing plate structure (6), between key type sealing plate structure (6) and connecting plate (4) both sides is provided with a band and is slidingly sealed
Bar (7) is slidingly sealed bar hole (8), and the side panel of key type sealing plate structure (6) is through being slidingly sealed bar hole (8) and energy
Freely slide up and down in which；Described key type sealing plate structure (6) include the base plate in sealing contact that can be contacted with diaphragm seal (2)
(61), be slidingly sealed side plate (62), key side plate (63) and be located at base plate in sealing contact (61) on limit spring (64) and
Support bar (65), is connected between support bar (65) bottom and base plate in sealing contact (61), in the connecting plate (4)
On be provided with the spacing hole (9) passed through for support bar (65) upper end, limit spring (64) be interspersed in support bar (65) upper and
Can between base plate in sealing contact (61) and connecting plate (4) elastic telescopic activity, described be slidingly sealed side plate (62) can slide
Sealing strip hole is freely slided up and down in (8), and key side plate (63) are vertically fixed on base plate in sealing contact (61) rear ends
And be connected with the side for being slidingly sealed side plate (62).
2. rotary regenerative air preheater fanning strip according to claim 1, it is characterised in that：Close in multigroup key type
Multiple intermediate sealing strips (10) are provided between closing plate structure (6).
3. rotary regenerative air preheater fanning strip according to claim 1, it is characterised in that：The base plate in sealing contact
(61) width is set to 35cm.
4. rotary regenerative air preheater fanning strip according to claim 1, it is characterised in that：Limit spring (64) exist
The Elastic penetration of 1-4cm is set under original state.
5. rotary regenerative air preheater fanning strip according to claim 1, it is characterised in that：In base plate in sealing contact (61)
Surface is provided with the metal-cermic coating of one layer of laser melting coating and thickness for 1-2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510036507.7A CN104613493B (en) | 2015-01-26 | 2015-01-26 | A kind of rotary regenerative air preheater fanning strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510036507.7A CN104613493B (en) | 2015-01-26 | 2015-01-26 | A kind of rotary regenerative air preheater fanning strip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104613493A CN104613493A (en) | 2015-05-13 |
| CN104613493B true CN104613493B (en) | 2017-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510036507.7A Active CN104613493B (en) | 2015-01-26 | 2015-01-26 | A kind of rotary regenerative air preheater fanning strip |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109282300B (en) * | 2018-09-10 | 2022-07-12 | 东方电气集团东方锅炉股份有限公司 | Manufacturing method of large-scale air preheater |
| CN112902219A (en) * | 2021-02-01 | 2021-06-04 | 井哲 | Magnetic contact type sealing assembly of rotary air preheater |
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| WO2002068869A1 (en) * | 2001-02-21 | 2002-09-06 | Alstom (Switzerland) Ltd | Low-distortion sector plate for air preheaters |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20130105105A1 (en) * | 2011-10-31 | 2013-05-02 | Harlod L. O'Brien | Bimetallic seal for air heaters |
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| WO2002068869A1 (en) * | 2001-02-21 | 2002-09-06 | Alstom (Switzerland) Ltd | Low-distortion sector plate for air preheaters |
| CN201137957Y (en) * | 2007-10-19 | 2008-10-22 | 哈尔滨润河科技有限公司 | Follow-up type flexible sealing device of rotary regenerative air pre-heater |
| CN202267079U (en) * | 2011-08-19 | 2012-06-06 | 中电投东北电力有限公司 | Sealing device for rotary air preheater |
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| CN204611820U (en) * | 2015-01-26 | 2015-09-02 | 张洪福 | Rotary regenerative air preheater fanning strip |
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| Publication number | Publication date |
|---|---|
| CN104613493A (en) | 2015-05-13 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20190531 Address after: 100176 5th floor 508, 7th floor, 3rd courtyard, Boda Road, Chaoyang District, Beijing Patentee after: Beijing pioneer Tiangong power technology application Co., Ltd. Address before: 100021 South Bridge View Garden Building 608, Shilidian, Chaoyang District, Beijing 8D Patentee before: Zhang Hongfu |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220617 Address after: 804, floor 8, building 6, yard 3, Boda Road, Chaoyang District, Beijing 100176 Patentee after: BEIJING QICHUANG TIANGONG ELECTRIC POWER TECHNOLOGY APPLICATION CO.,LTD. Patentee after: Pingdingshan Yaomeng Power Generation Co., Ltd Address before: 100176 5th floor 508, 7th floor, 3rd courtyard, Boda Road, Chaoyang District, Beijing Patentee before: BEIJING QICHUANG TIANGONG ELECTRIC POWER TECHNOLOGY APPLICATION CO.,LTD. |