CN104613493A - Rotating type air pre-heater sector plate - Google Patents
Rotating type air pre-heater sector plate Download PDFInfo
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- CN104613493A CN104613493A CN201510036507.7A CN201510036507A CN104613493A CN 104613493 A CN104613493 A CN 104613493A CN 201510036507 A CN201510036507 A CN 201510036507A CN 104613493 A CN104613493 A CN 104613493A
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- plate
- sealing
- air preheater
- key type
- fanning strip
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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
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Abstract
The invention relates to a rotating type air pre-heater sector plate. The rotating type air pre-heater sector plate is fixedly installed at the upper portion of a rotor of an air pre-heater, a sealing sheet is arranged on the rotor of the air pre-heater, the sector plate comprises an upper fixing plate and a connecting plate, and fixing I-shaped steel capable of having the connecting supporting effect is fixedly arranged between the upper fixing plate and the connecting plate; a plurality of key type sealing plate structures capable of being in contact with the sealing sheet are arranged at the lower portion of the connecting plate, the positions between the key type sealing plate structures and the two sides of the connecting plate are each provided with a sliding sealing strip hole with a sliding sealing strip, and lateral face plates of the key type sealing plate structures penetrate through the sliding sealing strip holes and can freely and vertically slide in the sliding sealing strip holes. The similar key type structures are adopted in the rotating type air pre-heater sector plate, and the good deformation contact can be generated between the similar key type structures and the sealing sheet, so that the air leakage rate of the rotating type air pre-heater sector plate is reduced to a large extent; in this way, the sector plate is simple in overall structure, convenient to install and manufacture and high in practicability.
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 has extreme influence as the flue gas of thermal power generation unit and air heat-exchange equipment for the generating efficiency of thermal power generation unit, except rotary regenerative air preheater heat transfer element heat storage capacity affects heat exchange efficiency, the size of another index air leak rate of air curtain also heat exchanging efficiency has larger impact, and rotary air preheater air leak rate is except affecting heat exchange efficiency, also a secondary air temperature is affected, air quantity, thus affect unit efficiency of combustion, in addition, the increase of rotary air preheater air leak rate can affect rotary regenerative air preheater exhaust gas temperature aggravation cold end corrosion and stifled ash, conventional sector plate in current industry is the fixed structure not possessing backlash compensation, when rotary regenerative air preheater rotor thermal deformation, increase will directly be affected rotary air preheater air leak rate by the gap of diaphragm seal and fanning strip, adopt the rotary regenerative air heater air leak rate of air curtain of this kind of fanning strip according to statistics generally more than 8%, in addition, rotary regenerative air preheater Sealing Technology main direction of studying is on apex seal, diaphragm seal such as, install hinge-type flexible contact type black box additional, the length of this assembly is generally 50-100cm every section, if the own out-of-flatness of fixed fanning strip (this situation is very general), the assembly of sealing form can go out situation about partly contacting with fanning strip, be not contact completely, another kind of technology is the seal form that gas leakage is reclaimed, install induced draught system additional by fanning strip grooved bore will to leak out sucking-off send the Air leakage control that Secondary Air side realizes rotary regenerative air preheater back to, but this technology is difficult to control just to be sucked back by the wind missed in actual applications, usually siphon away a large amount of flue gas to Secondary Air side, the heat exchange efficiency of air preheater can be reduced like this, this system fan energy consumption is higher, complex structure, operation expense is high.
Summary of the invention:
Technical problem to be solved by this invention is, provides that a kind of structure is simple, fabrication and installation are convenient and effectively can reduce rotary air preheater air leak rate, improve the fanning strip of air preheater heat exchange efficiency.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions: a kind of rotary regenerative air preheater fanning strip, be fixedly installed in air preheater rotor top, described air preheater rotor is provided with diaphragm seal, described fanning strip comprises upper mounted plate and is positioned at the connecting plate below upper mounted plate, between fixed plate and connecting plate, be fixedly installed one can play the fixing I-steel connecting supporting role, the many groups of key type sealing plate structures that can contact with diaphragm seal are provided with in described connecting plate bottom, the slipper seal cylindrical void of a band slipper seal bar is provided with between described key type sealing plate structure and connecting plate both sides, the side panel of described key type sealing plate structure passes slipper seal cylindrical void and can within it freely slide up and down.
As preferably, contact base plate for making the sealing of described rotary regenerative air preheater fanning strip bottom to realize effectively contacting sealing according to actual thermal deformation situation with between diaphragm seal, described key type sealing plate structure comprises the sealing that can contact with diaphragm seal and contacts base plate, slipper seal side plate, key side plate and be positioned at sealing contact base plate on limit spring and support bar, described support bar bottom contacts between base plate with sealing and is connected and fixed, described connecting plate has the spacing hole passed for post upper portion, described limit spring to intert on support bar and can between sealing contact base plate and connecting plate elastic telescopic movable, described slipper seal side plate freely can slide up and down in slipper seal cylindrical void, described key side plate is vertically fixed on sealing contact base plate rear ends and is connected and fixed with the side of slipper seal side plate.
As preferably, for making to keep good sealing property between described key type sealing plate, between described many group key type sealing plate structures, be provided with multiple intermediate sealing strip.
As preferably, for making sealing effectiveness between described rotary regenerative air preheater and diaphragm seal better, the width of described sealing contact base plate is set to 35CM.
As preferably, be make described limit spring can have best elastic thrust scope to sealing contact base plate, described limit spring is set to the Elastic penetration of 1-4CM in an initial condition.
As preferably, in order to reduce frictional force between diaphragm seal and sealing contact base plate and wearing and tearing, be provided with one deck laser melting coating and thickness is 1-2mm metal-cermic coating at sealing contact backplate surface.
Compared with prior art, usefulness of the present invention is: this rotary regenerative air preheater fanning strip adopts similar piano type structure, can and diaphragm seal between produce good deforming contact, thus largely on reduce the air leak rate of air curtain of rotary regenerative air preheater, described sealing contact backplate surface is by the process of cermet laser melting and coating technique in addition, there are high wearability, extremely low coefficient of friction, increase the service life, therefore, described fanning strip overall structure is simple, install easy to make, with low cost and practicality is high.
Accompanying drawing illustrates:
Below in conjunction with accompanying drawing, the present invention is further described.
Fig. 1 is the axle side structure schematic diagram of the present invention when not installing fixed head and connecting plate
Fig. 2 is the part main TV structure schematic diagram of the present invention when being arranged on rotor
Fig. 3 is the plan structure schematic diagram of the present invention when not installing fixed head and connecting plate
Fig. 4 is the structure for amplifying schematic diagram at A place of the present invention
Fig. 5 is the plan structure schematic diagram of the present invention when being arranged on rotor
In figure: 1, air preheater rotor 2, diaphragm seal 3, upper mounted plate 4, connecting plate 5, fixing I-steel 6, key type sealing plate structure 61, sealing contact base plate 62, slipper seal side plate 63, key side plate 64, limit spring 65, support bar 7, slipper seal bar 8, slipper seal cylindrical void 9, spacing hole 10, intermediate sealing strip
Detailed description of the invention:
Describe the present invention below in conjunction with the drawings and the specific embodiments:
A kind of rotary regenerative air preheater fanning strip as shown in Figures 1 to 5, be fixedly installed in air preheater rotor 1 top, described air preheater rotor 1 is provided with diaphragm seal 2, described fanning strip comprises upper mounted plate 3 and is positioned at the connecting plate 4 below upper mounted plate 3, between fixed plate 3 and connecting plate 4, be fixedly installed one can play the fixing I-steel 5 connecting supporting role, sealing effectiveness between many rotary regenerative air preheaters and diaphragm seal 2 is provided with better in described connecting plate 4 bottom, the width group key type sealing plate structure 6 of described sealing contact base plate 61, described key type sealing plate structure 6 comprises the sealing that can contact with diaphragm seal 2 and contacts base plate 61, slipper seal side plate 62, key side plate 63 and be positioned at sealing contact base plate 61 on limit spring 64 and support bar 65, for making sealing effectiveness between described rotary regenerative air preheater and diaphragm seal 2 better, the width of described sealing contact base plate 61 is set to 35CM, and in order to reduce diaphragm seal 2 and sealing contact base plate 61 between frictional force and wearing and tearing, one deck laser melting coating is provided with and thickness is 1-2mm metal-cermic coating on sealing contact base plate 61 surface, described support bar 65 bottom contacts between base plate 61 with sealing and is connected and fixed, described connecting plate 4 has the spacing hole 9 passed for support bar 65 upper end, described limit spring 64 to intert on support bar 65 and can between sealing contact base plate 61 and connecting plate 4 elastic telescopic movable, and described limit spring 64 is set to the Elastic penetration of 1-4CM in an initial condition, thus described limit spring 64 is made can to have best elastic thrust scope to sealing contact base plate 61, in addition, as shown in Figure 4, the slipper seal cylindrical void 8 of a band slipper seal bar 7 is provided with between described key type sealing plate structure 6 and connecting plate 4 both sides, the slipper seal side plate 62 of described key type sealing plate structure 6 passes slipper seal cylindrical void 8 and can within it freely slide up and down, moreover, multiple intermediate sealing strip 10 is provided with between described many group key type sealing plate structures 6, thus make keep good sealing property between described key type sealing plate structure 6.
In actual applications, detailed description of the invention is as follows: in an initial condition namely generating set do not carry out running and rotary regenerative air preheater rotor 1 do not start rotation carry out heat exchange time, limit spring 64 on described key type sealing plate structure 6 is provided with the Elastic penetration of 1-4CM, thus the diaphragm seal 2 of described sealing contact base plate 61 pairs of its underparts all has the elastic pressure of certain limit, therefore, when generating set brings into operation, described air preheater rotor 1 can produce thermal deformation in hot running, thus the gap between apex seal 2 and described fanning strip can be strengthened, now the key type sealing plate structure 6 of described fanning strip bottom then can make under the elastic force effect of limit spring 64 described slipper seal side plate 62 and sealing contact base plate 61 move downward and with diaphragm seal 2 close contact, thus arrive the object reducing gap and keep sealing, owing to being provided with a slipper seal bar 7 in slipper seal cylindrical void 8, thus effectively sealing can be ensured, and the device owing to adopting multiple key type sealing plate structure to combine, thus when the out-of-flatness of fanning strip own or between the irregular fanning strip that causes of thermal deformation and diaphragm seal 2, gap length is not for the moment, described each group of key type sealing plate structure 6 can carry out the position of independent adjustment each self sealss contact base plate 61 automatically according to the gap length of its correspondence, thus ensure that between described fanning strip with diaphragm seal 2, fully contacting of each position seals, arrive auto-compensation object, and between each group of key type sealing plate structure 6, be also provided with intermediate sealing strip 10, thus the sealing property of described fanning strip is further ensured, above-mentioned rotary regenerative air preheater fanning strip adopts similar piano type structure, can and diaphragm seal 2 between produce good deforming contact, thus largely on reduce the air leak rate of air curtain of rotary regenerative air preheater, described sealing contact base plate 61 surface is by the process of cermet laser melting and coating technique in addition, there is high wearability, extremely low coefficient of friction, increase the service life, therefore, described fanning strip overall structure is simple, install easy to make, with low cost and practicality is high.
It is emphasized that: be only preferred embodiment of the present invention above, not any pro forma restriction is done to the present invention, every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (6)
1. a rotary regenerative air preheater fanning strip, be fixedly installed in air preheater rotor (1) top, described air preheater rotor (1) is provided with diaphragm seal (2), it is characterized in that: described fanning strip comprises upper mounted plate (3) and is positioned at the connecting plate (4) of upper mounted plate (3) below, between fixed plate (3) and connecting plate (4), be fixedly installed one can play the fixing I-steel (5) connecting supporting role, the many groups of key type sealing plate structures (6) that can contact with diaphragm seal (2) are provided with in described connecting plate (4) bottom, the slipper seal cylindrical void (8) of a band slipper seal bar (7) is provided with between described key type sealing plate structure (6) and connecting plate (4) both sides, the side panel of described key type sealing plate structure (6) passes slipper seal cylindrical void (8) and can within it freely slide up and down.
2. rotary regenerative air preheater fanning strip according to claim 1, it is characterized in that: described key type sealing plate structure (6) comprises the sealing that can contact with diaphragm seal (2) and contacts base plate (61), slipper seal side plate (62), key side plate (63) and the limit spring (64) be positioned in sealing contact base plate (61) and support bar (65), described support bar (65) bottom contacts between base plate (61) with sealing and is connected and fixed, described connecting plate (4) has the spacing hole (9) passed for support bar (62) upper end, described limit spring (64) is interted at support bar (65) upper and can elastic telescopic activity between sealing contact base plate (61) with connecting plate (4), described slipper seal side plate (62) freely can slide up and down in slipper seal cylindrical void (8), described key side plate (63) is vertically fixed on sealing contact base plate (61) rear ends and is connected and fixed with the side of slipper seal side plate (62).
3. rotary regenerative air preheater fanning strip according to claim 1, is characterized in that: between described many groups key type sealing plate structure (6), be provided with multiple intermediate sealing strip (10).
4. rotary regenerative air preheater fanning strip according to claim 2, is characterized in that: the width of described sealing contact base plate (61) is set to 35CM.
5. rotary regenerative air preheater fanning strip according to claim 2, is characterized in that: described limit spring (64) is set to the Elastic penetration of 1-4CM in an initial condition.
6. rotary regenerative air preheater fanning strip according to claim 2, is characterized in that: be provided with one deck laser melting coating and thickness is the metal-cermic coating of 1-2mm on sealing contact base plate (61) surface.
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 |
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| CN104613493A true CN104613493A (en) | 2015-05-13 |
| CN104613493B CN104613493B (en) | 2017-03-15 |
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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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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109282300A (en) * | 2018-09-10 | 2019-01-29 | 东方电气集团东方锅炉股份有限公司 | The production 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 |
| US12007174B2 (en) | 2020-05-13 | 2024-06-11 | Howden Group Limited | Parabolically deforming sector plate |
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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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2015
- 2015-01-26 CN CN201510036507.7A patent/CN104613493B/en active Active
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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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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109282300A (en) * | 2018-09-10 | 2019-01-29 | 东方电气集团东方锅炉股份有限公司 | The production method of large-scale air preheater |
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| US12007174B2 (en) | 2020-05-13 | 2024-06-11 | Howden Group Limited | Parabolically deforming sector plate |
| CN112902219A (en) * | 2021-02-01 | 2021-06-04 | 井哲 | Magnetic contact type sealing assembly of rotary air preheater |
Also Published As
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| CN104613493B (en) | 2017-03-15 |
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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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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. |