CN107270321A - A kind of intelligent sealing system of air preheater - Google Patents
A kind of intelligent sealing system of air preheater Download PDFInfo
- Publication number
- CN107270321A CN107270321A CN201710662897.8A CN201710662897A CN107270321A CN 107270321 A CN107270321 A CN 107270321A CN 201710662897 A CN201710662897 A CN 201710662897A CN 107270321 A CN107270321 A CN 107270321A
- Authority
- CN
- China
- Prior art keywords
- plate
- rotor
- sealing
- air preheater
- layer
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 75
- 230000002159 abnormal effect Effects 0.000 claims abstract description 37
- 239000000956 alloy Substances 0.000 claims abstract description 13
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 235000001674 Agaricus brunnescens Nutrition 0.000 abstract description 13
- 238000005516 engineering process Methods 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 6
- 239000012535 impurity Substances 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000001172 regenerating effect Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000002360 explosive Substances 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 241001635479 Coris bulbifrons Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000011825 aerospace material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000029052 metamorphosis Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F11/00—Arrangements for sealing leaky tubes and conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2230/00—Sealing means
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Supply (AREA)
Abstract
The invention belongs to Air Preheater Technology field, it is related to a kind of intelligent sealing system of air preheater.The present invention seal request different by studying rotor all directions, is divided into ascent stage, sinking section by hot end of rotor, different sealing part is separately designed for the side of rotor, hot junction, ascent stage and sinking section.In sinking section, the present invention goes out upper and lower abnormal alloy-layer for rotor " mushroom is strengthened " deformation design, when hot end of rotor sinking section is sunk, abnormal alloy components are heated, and upper abnormal alloy-layer is bent upwards, and lower abnormal alloy-layer is bent downwardly, so as to support the flexible seal member of top to rise, the gap that " mushroom " deformation is produced is made up, air leak rate of air curtain is further reduced, improves air preheat effect.Axial seal part is designed in rotor side, axial seal part can remove the impurity of itself, it is to avoid occur stuck situation during use, and the life-span is higher.
Description
Technical field
The invention belongs to air preheat technical field, and in particular to a kind of intelligent sealing system of air preheater.
Background technology
Rotary regenerative air preheater it is main by central shaft, rotor, the heat exchange element in rotor lattice storehouse, rotor case,
Transition cigarette air channel, top structure, polycrystalline substance, three pieces of top fanning strip, three pieces of bottom fanning strip, three pieces of arcs, support shafts
Hold, the composition such as guide bearing, drive device.Most important part is rotor, and rotor is by many radial direction dividing plates and ring dividing plate
Divide the rotor into placement heat exchange element in several lattice storehouses, lattice storehouse.Rotor realizes flue gas and air when rotating by heat exchange element
Between heat exchange.Radial and axial diaphragm seal is installed on rotor radial dividing plate.Bottom apex seal and bottom fanning strip, on
Portion's apex seal and top fanning strip, axial seal piece contact or kept the distance of very little in hot operation with arc,
The sealing formed between flue gas and air.The sealing property of air preheater, is one of most important performance indications, directly affects boiler effect
Rate.
Under hot running status, each part of air preheater can be expanded because heated, and rotor can become mushroom
Shape, the gap between rotor and fanning strip, arc can change, only in hot junction apex seal external diameter about 2/3rds
In length, the gap of diaphragm seal and fan plate becomes big with the rise of temperature, remaining all gap（Including hot junction radially inner side about
With hot junction fan plate in 1/3rd length, cold end radial direction and cold end fan plate, axially with camber plate, are bypassed T-shaped with rotor
Steel）It will diminish.Under hot running status, if gap is excessive, air leak rate of air preheater will be caused very big, if gap mistake
It is small, it would be possible to cause diaphragm seal and corresponding fan plate or camber plate to produce friction, electric current rising is directed at, if friction
It is excessive, or even stuck, the compressor emergency shutdown that can be directed at air preheater.The air leak rate of air curtain of air preheater is influence boiler operating efficiency
Key factor, so the sealing between air and flue gas, it appears particularly important, the Sealing Technology of air preheater is also each sky
One of core technology of air preheater producer.
In the market, rotary regenerative air preheater sealing device mainly uses following several forms：
1st, adjustable sealing.Fanning strip and arc can be by automatic or manual adjustment, and wherein fanning strip mostly can be with
Adjust automatically.Fanning strip adjustment executing agency is installed on rotary regenerative air preheater, and between being equipped near fanning strip
Gap monitoring device, when hot lower gap changes, executing agency is fed back to by gap variable signal, executing agency acts,
Fanning strip is adjusted according to feedback information, so that gap reaches optimum state.This sealing means are complicated, to service requirement
Height, reliability is bad, and maintenance expense is costly.Breathe out pot, upper pot, the air preheater of Dong Guodeng enterprises production and mainly use this technology,
Because maintenance requirement is high, regulation part, which exists, is leaked out, and this Sealing Technology is seldom used in transformation, is mainly used in and boiler
On supporting new air preheater.
2nd, fixed sealing.The technology has Howden companies of Britain to possess technical patent.According to rotary regenerative air preheater
Operational factor, precomputes the expansion clearance between hot lower sealing piece and fanning strip, arc, reserves when mounted
Come, to ensure to reach optimal sealing state after expanding during hot operation.Because the diaphragm seal on rotor is with fanning strip, arc
Cold conditions gap between plate is between rotor and fanning strip, air preheater top bottom structure " thermal expansion difference ", to calculate and adjust
Method is complicated, and construction requirement is strict.This technology is only grasped by Howden companies, and as core technology, be generally not provided to
Client's cold conditions sets data and establishing method.Domestic enterprise can not also accurately calculate cold conditions gap setting value at present, voluntarily set
Often there is relatively large deviation in fixed gap.Easy to maintenance, the good reliability of fixed sealing, but in order to ensure safety in operation, sealing
Piece only has 1~3mm thickness, runs several years just because ash cutting and corrosion need to be changed, the core skill set due to gap
Art is monopolized, and power plant can only ask specialized company to carry out gap setting, high cost again.Simultaneously because the calculating in cold conditions gap and
Adjustment still has error, and certain leakage-gap is still had between fanning strip and diaphragm seal.Due to being by oepration at full load
The gap width of state computation, in boiler half capacity operation, however it remains larger situation of leaking out, meanwhile, work as operation exception（Such as
Cigarette temperature abnormality）When, easily cause the stuck situation of rotor.Howden companies of Britain possess the technology and patent, its new air preheater
Global most share is occupied with transformation air preheater.Ke Sheng companies also use the technology, but slight change substantially.
3rd, spring-piece type（It is flexible）Sealing.Diaphragm seal makes of elastomeric material, to ensure to remain to during space change to paste well
Close static seal surface, it is ensured that sealing.Because Rotary air preheater is in long-term continuous running state, and running environment is disliked
Bad, elastic sealing strip is chronically at friction, high temperature and stress repeatedly, it is easy to cause elastic component to fail, or even fatigue is disconnected
Split, it is necessary to often change.Monoblock sealing block fractures, and can cause to leak out more greatly, and rotor rotation needs to overcome shell fragment resistance, makes
Rotational resistance increases, and adds drive device power consumption.The companies such as Beijing Huaneng Group reaches, German Bark Dole use such a sealing side
Formula.
4th, leading-type is sealed.The technology is possessed patent by companies such as east engineerings and used, and test can be greatly reduced and leaks out
Rate, but energy-saving effect is not obvious.
Above-mentioned sealing uses single sealing means mostly, it is impossible to which the gap that rotor " mushroom is strengthened " deformation is produced is mended
Repay, so that cause air leak rate of air curtain to increase, the reduction of air preheat effect.
The content of the invention
The purpose of the present invention is to overcome the deficiencies in the prior art there is provided a kind of intelligent sealing system of air preheater.
In order to achieve the above object, present invention employs following technical proposal：
A kind of intelligent sealing system of air preheater, including rotor, described rotor one end is cold end, and the other end is hot junction, the hot junction
Including sinking section and close to the ascent stage of rotor axis.The cold end and ascent stage are provided with flexible seal member, the rotor one
Side is provided with axial seal part.
In work, as temperature of rotor rises, rotor produces " mushroom " deformation, and the ascent stage rises, between cold end and axial direction
Gap diminishes, so ascent stage, cold end and the flexible seal member axially used realize sealing.
The sinking section is provided with hot junction dividing plate, and the top of the hot junction dividing plate is provided with flexible seal member, flexible sealing part
Abnormal alloy components are provided between part and dividing plate.Abnormal alloy components are made up of upper abnormal alloy-layer and lower abnormal alloy-layer,
Upper and lower abnormal alloy-layer two ends are connected.The flexible seal member bottom is fixed with bottom plate, the bottom plate and upper abnormal alloy-layer
It is connected, the lower abnormal alloy-layer is connected with hot end seal plate.
In work, rotor " mushroom " deformation makes sinking section sinking, produces gap；Meanwhile, abnormal alloy components are heated, on
Abnormal alloy-layer is bent upwards, and lower abnormal alloy-layer is bent downwardly, so as to support the flexible seal member of top to rise, is made up
The gap that " mushroom " deformation is produced, is sealed.
The axial seal part includes supporting plate and the hinge plate above supporting plate, and the supporting plate is by bottom plate and sets
Put the support base composition in bottom plate both sides.Rotating shaft is connected with the support base, described hinge plate one end is socketed with rotating shaft, the other end
It is fixed with swivel plate.The supporting plate bottom is fixed with backup plate, and described backup plate one end extends to swivel plate, and between swivel plate
Keep gap.Provided with back of the body spring between the swivel plate and backup plate, the back of the body spring lower end connects with supporting plate, the back of the body spring upper end and
Stops located at swivel plate top is relative.
During work, swivel plate is contacted with arc, and swivel plate is rotated around the axis certain angle after being pressurized by cutting with scissors plate, makes the back of the body
Spring is bent, and back of the body spring by bending applies elastic force to swivel plate so that swivel plate is brought into close contact with arc, forms sealing.Meanwhile,
Hinge plate is rotated in rotating shaft can remove impurity, it is to avoid occur stuck situation in use.
Preferably, the sinking section accounts for 2/3rds of hot junction septum plate length, the ascent stage accounts for the three of hot junction septum plate length
/ mono-.The sinking section and ascent stage being so distributed are adapted with rotor " mushroom " deformation, and sealing property is more preferably.
Further preferably, the intelligent sealing system of air preheater also includes the rebound being connected with fanning strip or arc, described
Rebound section is triangle.Rebound avoids each seal member and directly contacted with fanning strip or arc, so as to reduce mill
Damage, improve the life-span.
Further preferably, the upper and lower abnormal alloy-layer two ends pass through gemel connection.
Further preferably, the backup plate extends one end for circular arc to swivel plate.Spring and backup plate circular arc are carried on the back in work
Shape end thereof contacts, make the deformation of back of the body spring be matched with circular arc, carry on the back spring uniform force, stress concentration will not be produced, so as to improve back of the body spring
Service life.
Further preferably, the flexible seal member includes the connected baffle plate of sealing plate and sealing plate side, the sealing
Latch plate is provided between plate and baffle plate.Latch plate contacts generation bending with fanning strip, latch plate is brought into close contact with fanning strip, shape
Into sealing.This flexible seal member, simple in construction, easily manufactured, cost is low.
Further preferably, the flexible seal member includes the connected baffle plate of sealing plate and sealing plate side, the sealing
Expansion plate is provided between plate and baffle plate, the expansion plate includes spring terminal and the connection end located at spring terminal side, the connection
End is provided with mounting hole, and the spring terminal bottom is fixed with spring.When expansion plate is contacted with fanning strip, compressible spring is moved back
Allow, it is to avoid hit with fanning strip, reduce abrasion；The spring of compression applies elastic force to expansion plate, makes expansion plate close with fanning strip
Laminating, forms sealing.
The present invention has advantages below：
1st, better seal effect is obtained.It is every to want sealed position, including hot junction is radially, cold end radial direction, axially, by hot junction
Road, cold end bypass is all sealed using flexible contact type, gap of not leaking out.Meanwhile, abnormal alloy components can make up it is hot under
The gap produced after rotor mushroom deformation, there's almost no the gap that mushroom deformation is produced.This unique sealing is adapted to
Mode, obtains better seal effect, air leak rate of air curtain side is down into less than 5% even lower.
2nd, longer service life.Because intelligent diaphragm seal employs aerospace material, conventional seals can be exceeded well over
The anti-wear performance and impact flexibility of piece, will not easily wear and tear like that, can be for a long time without changing seal assembly, and service life is than it
Its form diaphragm seal is longer.
3rd, run safer.Even if the situation of abnormal expansion such as occur air preheater overtemperature, catch fire, as a result of
The good aeronautical material of toughness, adapts to larger rotor or fan plate, the thermal deformation of camber plate, will not cause air preheater
It is stuck, make operation safer.
4th, repair and maintenance work is simpler.Without calculating again hot gap, in rotary regenerative air preheater system
In making or transform, overhauling, without carrying out seal clearance calculating again, adjustment also becomes simple, quick, greatly reduces peace
Dress, maintenance workload.
5th, sealing adjustment time is greatly shortened.As a result of brand new and brand-new sealing adjusting process, air preheater
Sealing adjustment construction workload is greatly reduced, and the engineering time also greatly shortens.
Brief description of the drawings
Fig. 1 is sealed structural representation of the present invention
Fig. 2 is partial enlarged drawing at A in Fig. 1
Fig. 3 be in Fig. 2 F-F to sectional view
Fig. 4 is Fig. 3 explosive view
Fig. 5 is partial enlarged drawing at B in Fig. 1
Fig. 6 be in Fig. 5 G-G to sectional view
Fig. 7 is partial enlarged drawing at C in Fig. 1
Fig. 8 be in Fig. 7 H-H to sectional view
Fig. 9 is Fig. 8 explosive view
Figure 10 is abnormal alloy components in Fig. 7（It is hot）Structural representation
Figure 11 is partial enlarged drawing at D in Fig. 1
Figure 12 is Figure 11 side view
Figure 13 is the structural representation of hinge plate in Figure 12
Figure 14 is Figure 12 explosive view
Reference：1 rotor, 2 sinking section seal members, 3 ascent stage seal members, 4 axial seal parts, 5 cold end seal portions
Part, 6 fanning strips, 7 rebounds, 21 hot junction dividing plates, 22 lifter plates, 23 times abnormal alloy-layers, abnormal alloy-layer, 25 the 3rd pads on 24
Plate, 26 second expansion plates, 31 second sealing plates, 32 second backing plates, 33 latch plates, 41 the 3rd sealing plates, 42 supporting plates, 43 turns
Axle, 44 hinge plates, 45 swivel plates, 46 backup plates, 47 back of the body springs, 48 stops, 51 first sealing plates, 52 first backing plates, 53 first expansion plates.
Embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Embodiment 1：A kind of intelligent sealing system of air preheater as shown in Figure 1, including rotor 1 and with fanning strip 6 or arc
The connected rebound 7 of plate.The upper end of rotor 1 is hot junction, and lower end is cold end, and hot junction includes sinking section and the rising close to rotor axis
Section, sinking section accounts for 2/3rds of the length of hot junction dividing plate 21, and the ascent stage accounts for 1/3rd of the length of hot junction dividing plate 21.Sinking section is set
There is sinking section seal member 2, the ascent stage is provided with ascent stage seal member 3, and cold end is provided with cold end seal part 5, and rotor side is set
There is axial seal part 4.
Cold end seal part 5 as in Figure 2-4 includes the first sealing plate 51, the first backing plate 52 and located at the first sealing plate
51 and first the first expansion plate 53 between backing plate 52.Studs is provided with the mounting hole of first expansion plate 53, and by double
Header stud is connected with the first sealing plate 51, the first backing plate 52.The top of first expansion plate 53 is connected with spring.
In work, the first expansion plate 53 is contacted with rebound 7, and the first expansion plate compression spring is moved downward, and is stretched when first
When contracting plate 53 reaches 7 lowest part of rebound, the first expansion plate 53 is contacted with fanning strip 6, forms sealing.
Ascent stage seal member 3 as seen in figs. 5-6 includes the second sealing plate 31, the second backing plate 32 and located at the second sealing
Latch plate 33 between the backing plate 32 of plate 31 and second.Second sealing plate 31, the second backing plate 32 and latch plate 33 are bolted.
In work, latch plate 33 is contacted with rebound 7, and latch plate 33 bends, when latch plate 33 reaches rebound 7 most
During lower, elastic plate 33 is contacted with fanning strip 6, forms sealing.
Sinking section seal member 2 as Figure 7-9 includes hot junction dividing plate 21 and the lifting located at the top of hot junction dividing plate 21
Plate 22, is provided with abnormal alloy components between hot junction dividing plate 21 and lifter plate 22.Abnormal alloy components are by upper abnormal alloy-layer 24
Constituted with lower abnormal alloy-layer 23, upper and lower abnormal alloy-layer two ends pass through gemel connection.Lower 22 of lifter plate and upper abnormal alloy
Layer 24 is connected, and the lower abnormal alloy-layer 23 is connected with hot end seal plate 21.The top of lifter plate 22 is provided with the 3rd backing plate 25, lifting
The second expansion plate 26 is provided between the backing plate 25 of plate 22 and the 3rd.Studs is provided with the mounting hole of second expansion plate 26, and is led to
Studs is crossed to be connected with lifter plate 22, the 3rd backing plate 25.The bottom of second expansion plate 26 is connected with spring.
In work, the second expansion plate 26 is contacted with rebound 7, and the second expansion plate compression spring is moved downward, and is stretched when second
When contracting plate 26 reaches 7 lowest part of rebound, the second expansion plate 26 is contacted with fanning strip 6, forms sealing.After rotor 1 heats up, " mushroom
Mushroom shape " deformation makes sinking section sinking, produces gap.Abnormal alloy components are heated, and upper abnormal alloy-layer 24 is bent upwards, lower metamorphosis
Alloy-layer 23 is bent downwardly, as shown in Figure 10, and the lifter plate 22 above support rises.Lifter plate 22 is driven on the second expansion plate 26
Rise and contacted with fanning strip 6, make up the gap that " mushroom " deformation is produced, sealed.
Axial seal part 4 as figs 11-13 includes the 3rd sealing plate 41 and the side of the 3rd sealing plate 41 that is connected
Supporting plate 42.Supporting plate 42 is made up of bottom plate with the support base for being arranged on bottom plate both sides, and rotating shaft 43 is connected with support base, is supported
The top of plate 42 is socketed provided with plate 44, hinge one end of plate 44 is cut with scissors as shown in fig. 13 that with rotating shaft 43, and the other end is fixed with swivel plate 45.Branch
The bottom of fagging 43 is fixed with backup plate 46, and the one end of backup plate 46 is circular arc, and it extends to swivel plate 45, and is protected between swivel plate 45
Hold gap.Provided with back of the body spring 47 between swivel plate 45 and backup plate 46, the back of the body lower end of spring 47 connects with supporting plate 42, and back of the body spring 47 upper end is with setting
Stops 48 in the top of swivel plate 45 is relative.
In work, swivel plate 45 is contacted with rebound 7, and swivel plate 45 is under pressure, bending back of the body spring 47, and is slowly turned to
Certain angle, when swivel plate 45 reaches 7 lowest part of rebound, swivel plate 45 is contacted with arc, and the back of the body spring 47 of bending is to rotation
Flap 45 applies elastic force so that swivel plate 45 is brought into close contact with arc, forms sealing.
The invention is not limited in foregoing embodiment.The present invention, which is expanded to, any in this manual to be disclosed
New feature or any new combination, and disclose any new method or process the step of or any new combination.
Claims (7)
1. a kind of intelligent sealing system of air preheater, including rotor（1）, the rotor（1）One end is cold end, and the other end is hot junction,
The hot junction includes sinking section and close to rotor（1）The ascent stage in axle center, the cold end and ascent stage are provided with flexible seal member,
The rotor（1）Side is provided with axial seal part（4）, it is characterised in that：
The sinking section is provided with hot junction dividing plate（21）, the hot junction dividing plate（21）Top be provided with flexible seal member, it is flexible close
Abnormal alloy components are provided between envelope part and dividing plate；Abnormal alloy components are by upper abnormal alloy-layer（24）With lower abnormal alloy
Layer（23）Composition, upper and lower abnormal alloy-layer two ends hinge connection；The flexible seal member bottom is fixed with bottom plate, the bottom
Plate and upper abnormal alloy-layer（24）It is connected, the lower abnormal alloy-layer（23）With hot junction dividing plate（21）It is connected；
The axial seal part includes supporting plate（42）With the hinge plate above supporting plate（44）, the supporting plate（42）By
Rotating shaft is connected with bottom plate and the support base composition for being arranged on bottom plate both sides, the support base（43）, the hinge plate（44）One end
With rotating shaft（43）Socket, the other end is fixed with swivel plate（45）, the supporting plate（42）Bottom is fixed with backup plate（46）, it is described to lean on
Plate（46）One end is to swivel plate（45）Extension, and and swivel plate（45）Between keep gap, the swivel plate（45）With backup plate
（46）Between provided with the back of the body spring（47）, the back of the body spring（47）Lower end and supporting plate（42）Connect, the back of the body spring（47）Upper end is with being located at
Swivel plate（47）The stops on top（48）Relatively.
2. the intelligent sealing system of a kind of air preheater according to claim 1, it is characterised in that：The sinking section account for hot junction every
Plate（21）2/3rds of length, the ascent stage accounts for hot junction dividing plate（21）/ 3rd of length.
3. the intelligent sealing system of a kind of air preheater according to claim 1 or 2, it is characterised in that：Also include and fanning strip
（6）Or the connected rebound of arc（7）, the rebound（7）Section is triangle.
4. the intelligent sealing system of a kind of air preheater according to claim 1 or 2, it is characterised in that：The upper and lower abnormal conjunction
Layer gold two ends pass through gemel connection.
5. the intelligent sealing system of a kind of air preheater according to claim 1 or 2, it is characterised in that：The backup plate（46）To
Swivel plate（45）Extension one end is circular arc.
6. the intelligent sealing system of a kind of air preheater according to claim 1 or 2, it is characterised in that：The flexible sealing part
Part includes the connected baffle plate of sealing plate and sealing plate side, and latch plate is provided between the sealing plate and baffle plate（33）.
7. the intelligent sealing system of a kind of air preheater according to claim 1 or 2, it is characterised in that：The flexible sealing part
Part includes the connected baffle plate of sealing plate and sealing plate side, and expansion plate, the expansion plate are provided between the sealing plate and baffle plate
Connection end including spring terminal and located at spring terminal side, the connection end is provided with mounting hole, and the spring terminal bottom is fixed with
Spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710662897.8A CN107270321A (en) | 2017-08-04 | 2017-08-04 | A kind of intelligent sealing system of air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710662897.8A CN107270321A (en) | 2017-08-04 | 2017-08-04 | A kind of intelligent sealing system of air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107270321A true CN107270321A (en) | 2017-10-20 |
Family
ID=60074989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710662897.8A Pending CN107270321A (en) | 2017-08-04 | 2017-08-04 | A kind of intelligent sealing system of air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107270321A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081788A (en) * | 2019-05-16 | 2019-08-02 | 中国电建集团山东电力建设第一工程有限公司 | A kind of air pre-heater sealing installation Special ruler |
| CN112610977A (en) * | 2020-12-22 | 2021-04-06 | 南京市利澜电力节能科技有限公司 | A installation mechanism for installing air preheater gasket |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6260607B1 (en) * | 1999-09-20 | 2001-07-17 | Abb Air Preheater, Inc. | Air preheater sector plate drive |
| 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 |
| CN102901118A (en) * | 2012-10-19 | 2013-01-30 | 南京通用电气装备有限公司 | Flexible sealing structure of rotary air pre-heater |
| CN103195929A (en) * | 2013-04-27 | 2013-07-10 | 四川东能节能技术有限公司 | Self-expanding compensation sealing fin applied to hot end of rotary air pre-heater |
| CN103423762A (en) * | 2012-11-20 | 2013-12-04 | 孟金来 | Flexible contact-type sealing device for cold end of air preheater |
| CN204372974U (en) * | 2015-01-04 | 2015-06-03 | 江苏透平密封高科技股份有限公司 | Riveted type air preheater brush seal |
| CN105570462A (en) * | 2016-02-19 | 2016-05-11 | 江苏拓平密封科技有限公司 | Elastic contact type sealing device for rotary air preheater |
| CN207049989U (en) * | 2017-08-04 | 2018-02-27 | 四川大智工程技术有限公司 | A kind of air preheater intelligence sealing system |
-
2017
- 2017-08-04 CN CN201710662897.8A patent/CN107270321A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6260607B1 (en) * | 1999-09-20 | 2001-07-17 | Abb Air Preheater, Inc. | Air preheater sector plate drive |
| 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 |
| CN102901118A (en) * | 2012-10-19 | 2013-01-30 | 南京通用电气装备有限公司 | Flexible sealing structure of rotary air pre-heater |
| CN103423762A (en) * | 2012-11-20 | 2013-12-04 | 孟金来 | Flexible contact-type sealing device for cold end of air preheater |
| CN103195929A (en) * | 2013-04-27 | 2013-07-10 | 四川东能节能技术有限公司 | Self-expanding compensation sealing fin applied to hot end of rotary air pre-heater |
| CN204372974U (en) * | 2015-01-04 | 2015-06-03 | 江苏透平密封高科技股份有限公司 | Riveted type air preheater brush seal |
| CN105570462A (en) * | 2016-02-19 | 2016-05-11 | 江苏拓平密封科技有限公司 | Elastic contact type sealing device for rotary air preheater |
| CN207049989U (en) * | 2017-08-04 | 2018-02-27 | 四川大智工程技术有限公司 | A kind of air preheater intelligence sealing system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081788A (en) * | 2019-05-16 | 2019-08-02 | 中国电建集团山东电力建设第一工程有限公司 | A kind of air pre-heater sealing installation Special ruler |
| CN110081788B (en) * | 2019-05-16 | 2024-01-19 | 中国电建集团山东电力建设第一工程有限公司 | Special scale for sealing installation of air preheater |
| CN112610977A (en) * | 2020-12-22 | 2021-04-06 | 南京市利澜电力节能科技有限公司 | A installation mechanism for installing air preheater gasket |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1843010A2 (en) | Gas turbine compressor casing flowpath rings | |
| US7278819B2 (en) | Variable stator vane lever arm assembly and method of assembling same | |
| US20080008574A1 (en) | Leakage flow control and seal wear minimization system for a turbine engine | |
| CN107270321A (en) | A kind of intelligent sealing system of air preheater | |
| CN102777603A (en) | Multi-arm ceramic sealing device of air preheater | |
| CN207049989U (en) | A kind of air preheater intelligence sealing system | |
| CN204716307U (en) | Air seal structure between gas turbine turbine wheel disc and turbine stator blade | |
| CN105180203B (en) | Rotary air preheater radial sealing system based on curtain type self-regulating sector plates | |
| CN205806018U (en) | A kind of cartridge receiver connection structure | |
| CN204574097U (en) | Air preheater and hot junction radial seal structure thereof | |
| US8806750B2 (en) | Forced oscillation seals for air to gas leaks reduction in regenerative air preheaters | |
| CN105570462A (en) | Elastic contact type sealing device for rotary air preheater | |
| US6632069B1 (en) | Step of pressure of the steam and gas turbine with universal belt | |
| CN103982248B (en) | There is the vane sealing device of gap control function | |
| CN106287790A (en) | Rotary regenerative air preheater and sealing structure thereof | |
| CN104791103A (en) | Sealing structure for static-static chambers of gas turbine | |
| CN104632682A (en) | Adjustable water-turbine generator set cooling fan and blade adjusting method thereof | |
| CN205156014U (en) | Rotation air preheater radial seal system based on curtain formula is from mode sector plate | |
| Lisyanskii et al. | Practical experience with the introduction of honeycomb shroud seals on 250–800 MW supercritical pressure units | |
| CN210289849U (en) | Elastic steam seal | |
| CN104913330A (en) | Air preheater and hot-end radial sealing device thereof | |
| CN215725354U (en) | Sealing device of flexible air preheater with spring | |
| CN201434080Y (en) | Container circumferential synchronous displacement sealing structure | |
| CN106051813B (en) | Assembly used for mounting radial sealing pad of air preheater | |
| CN208331255U (en) | A kind of air preheater radial seal assembly for hot end |
Legal Events
| 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 | ||
| CB02 | Change of applicant information |
Address after: 610000, 25 B6, 1 times digital building, four section, Renmin South Road, Wuhou District, Sichuan, Chengdu Applicant after: Sichuan Dazhi Electric Power Co.,Ltd. Address before: 610000, 25 B6, 1 times digital building, four section, Renmin South Road, Wuhou District, Sichuan, Chengdu Applicant before: SICHUAN WISDOM ENGINEERING TECHNOLOGY Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171020 |
|
| WD01 | Invention patent application deemed withdrawn after publication |