CN204611820U - Rotary regenerative air preheater fanning strip - Google Patents

Rotary regenerative air preheater fanning strip Download PDF

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Publication number
CN204611820U
CN204611820U CN201520050710.5U CN201520050710U CN204611820U CN 204611820 U CN204611820 U CN 204611820U CN 201520050710 U CN201520050710 U CN 201520050710U CN 204611820 U CN204611820 U CN 204611820U
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CN
China
Prior art keywords
plate
air preheater
sealing
fanning strip
rotary regenerative
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Withdrawn - After Issue
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CN201520050710.5U
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Chinese (zh)
Inventor
张洪福
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张洪福
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/34Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Abstract

The utility model relates to 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 connecting 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, 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 fanning strip overall structure is simple, install easy to make and practicality is high.

Description

Rotary regenerative air preheater fanning strip
Technical field:
The utility model 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 in the utility model 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 utility model is achieved through 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 utility model 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 utility model is further illustrated.
Fig. 1 is the axle side structure schematic diagram of the utility model when not installing fixed head and connecting plate
Fig. 2 is the part main TV structure schematic diagram of the utility model when being arranged on rotor
Fig. 3 is the plan structure schematic diagram of the utility model when not installing fixed head and connecting plate
Fig. 4 is the structure for amplifying schematic diagram at the utility model A place
Fig. 5 is the plan structure schematic diagram of the utility model 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:
Below in conjunction with the drawings and the specific embodiments, the utility model is described in detail:
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, many group key type sealing plate structures 6 are provided with in described connecting plate 4 bottom, 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 utility model above, not any pro forma restriction is done to the utility model, every above embodiment is done according to technical spirit of the present utility model any simple modification, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.

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 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 sealing plate structure (6) and connecting plate (4) both sides, the side panel of described 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 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: described organize between sealing plate structure (6) is provided with multiple intermediate sealing strip (10) more.
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.
CN201520050710.5U 2015-01-26 2015-01-26 Rotary regenerative air preheater fanning strip Withdrawn - After Issue CN204611820U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520050710.5U CN204611820U (en) 2015-01-26 2015-01-26 Rotary regenerative air preheater fanning strip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520050710.5U CN204611820U (en) 2015-01-26 2015-01-26 Rotary regenerative air preheater fanning strip

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104613493A (en) * 2015-01-26 2015-05-13 张洪福 Rotating type air pre-heater sector plate
CN107401985A (en) * 2017-07-18 2017-11-28 航天科工哈尔滨风华有限公司电站设备分公司 Air preheater rotor hot junction inflection curves monitoring device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104613493A (en) * 2015-01-26 2015-05-13 张洪福 Rotating type air pre-heater sector plate
CN104613493B (en) * 2015-01-26 2017-03-15 张洪福 A kind of rotary regenerative air preheater fanning strip
CN107401985A (en) * 2017-07-18 2017-11-28 航天科工哈尔滨风华有限公司电站设备分公司 Air preheater rotor hot junction inflection curves monitoring device
CN107401985B (en) * 2017-07-18 2020-06-05 航天科工哈尔滨风华有限公司电站设备分公司 Air heater rotor hot end deformation curve monitoring device

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AV01 Patent right actively abandoned

Granted publication date: 20150902

Effective date of abandoning: 20171114

AV01 Patent right actively abandoned