CN102777603A - Multi-arm ceramic sealing device of air preheater - Google Patents
Multi-arm ceramic sealing device of air preheater Download PDFInfo
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- CN102777603A CN102777603A CN2012102973711A CN201210297371A CN102777603A CN 102777603 A CN102777603 A CN 102777603A CN 2012102973711 A CN2012102973711 A CN 2012102973711A CN 201210297371 A CN201210297371 A CN 201210297371A CN 102777603 A CN102777603 A CN 102777603A
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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 multi-arm ceramic sealing device of an air preheater, and the device comprises an inclined wear-resistant sealing plate, a fixed plate and a joint type spring guide regulating device, wherein the joint type spring guide regulating device comprises a rotating part, a regulating stem, a compression spring, a supporting seat and a regulating nut, the regulating stem is composed of a regulating stem I and a regulating stem II, the upper end of the regulating stem I is arranged on the back surface of the inclined wear-resistant sealing plate through the rotating part, the lower end of the regulating stem II is provided with a screw thread and connected with the regulating nut after passing through a round hole arranged in the front end of the supporting seat, the compression spring is sleeved on the regulating stem, and the rear end of the supporting seat is fixedly arranged on the fixed plate on a corresponding position. Wear-resistant ceramic blocks on the wear-resistant sealing plate can be in contact with a sector plate of the air preheater in the whole rotating process, so that the multi-arm ceramic sealing device has the advantages of good sealing effect, excellent wear resistance property, long service life, suitability for modular production, convenience for field installation, short construction period and the like. The multi-arm ceramic sealing device is most suitable for radially sealing a rotary air preheater of a large boiler.
Description
Technical field
The present invention relates to the apex combustion seal of a kind of seal arrangement, particularly air preheater, belong to the rotary regenerative air preheater field.
Background technique
Rotary regenerative air preheater is widely used on station boiler as the heat-exchange apparatus of large-sized boiler, and it is that the flue gas heat of utilizing boiler to discharge comes preheating to get into the required air of boiler participation burning, thereby improves the efficient of boiler.The air leak rate of air curtain of air preheater is the important indicator that influences efficiency of boiler, and air leak rate of air curtain is high, with reduction give, the exerting oneself of induced draught fan; Power consumption strengthens, and has also reduced heat exchange efficiency simultaneously, thereby has influenced efficiency of boiler; The air leak rate of air curtain of therefore effective control air preheater; Can reduce power consumption, improve efficiency of boiler, reach energy-conservation good result.Normally in hot operation down, each parts can deform because of being heated air preheater, and rotor can become mushroom cloud-like, and the gap changes, and most of gap can diminish.If it is big that the gap between rotor and the stator becomes, possibly cause the air-heater leakage rate to increase, if gap smaller possibly cause air preheater stuck.So the sealing technique of air preheater is particularly important, have only the rational sealing technique of employing, effectively the air leak rate of air curtain of control air preheater improves efficiency of boiler, cuts down the consumption of energy.The apex combustion seal of existing air preheater generally adopts rigid seal, obviously exists the rate of wear fast, the critical defect that poor sealing performance and working life are short.
Summary of the invention
The objective of the invention is to design a kind of good seal performance in order to overcome the deficiency of above-mentioned existing apex combustion seal, wear-resisting property is good, the air preheater multi-arm type ceramic sealing device of long service life.
Air preheater multi-arm type ceramic sealing device of the present invention; Comprise wear-resistant sealing plate of oblique installing type and fixed plate; The wear-resistant sealing plate of said oblique installing type fixedly be to link together through swivel gear circular shaft and fixed plate by its inner side surface, it is characterized in that also comprising articulated type spring guiding controlling device, said articulated type spring guiding controlling device comprises rotatable parts, adjustable lever, pressure spring, supporting base and adjusting nut; Wherein, Adjustable lever is connected to form joint rotation by adjustable lever I and adjustable lever II through bearing pin II, the upper end of adjustable lever I through rotatable parts be installed in the wear-resistant sealing plate of oblique installing type on the back side, the circular hole that the lower end of adjustable lever II is provided with screw thread and passes the supporting base front end is connected with adjusting nut; Pressure spring is sleeved on the adjustable lever; The upper end of pressure spring is by the location of the boss on the adjustable lever I, and the other end is installed on the peripheral recessed circle of supporting base circular hole, and the supporting base rear end is packed on the fixed plate of corresponding position.
Not being conditioned bar in order to ensure the wear-resistant sealing plate of oblique installing type tires out and freedom of movement; Above-mentioned rotatable parts comprise П type fixed base, nut, bearing pin I; The dual-side of said П type fixed base is respectively equipped with pin shaft hole; The base of П type fixed base be packed in the wear-resistant sealing plate of oblique installing type on the back side, adjustable lever I upper end is provided with pin shaft hole, adjustable lever I upper end places in the notch of П type fixed base and is inserted on the pin shaft hole and is installed on the П type fixed base through bearing pin I; The other end of bearing pin I is provided with screw thread and fixes with nut, and adjustable lever I can rotate around bearing pin I flexibly.
For improve sealing plate antiwear property, the wear-resistant sealing plate of oblique installing type be installed with the wear-resistant ceramic piece on the outer side surface.
Air preheater multi-arm type ceramic sealing device of the present invention; During installation; With the wear-resistant sealing plate of oblique installing type the plane of inclination corresponding to sense of rotation; Fixed plate is installed on the rotor of air preheater with bolt, is the length of can regulate adjustable lever and then regulates pressure spring initial compression location status through adjusting nut.When the wear-resistant sealing plate of oblique installing type began to contact with sector, its surface of contact was an inclined-plane, can guarantee the effect that all has wear-resistant buffering when any position on the inclined-plane contacts with sector, and after the contact, its point of contact slides into the top of wear-resistant ceramic sheet along the inclined-plane; Pressure spring in this process is by progressively compression, and the adjustable lever of this moment moves in the circular hole of supporting base and not influence the wear-resistant sealing plate of oblique installing type free movable.The wear-resistant sealing plate of oblique installing type that the top studs with the wear-resistant ceramic piece slides on sector, makes the very little gap of script between wear-resistant sealing plate of oblique installing type and the sector, can reach no gap very soon through break-in, thereby reach sealing effect.When the wear-resistant sealing plate of oblique installing type was thrown off with sector, pressure spring returned to initial compressed state, and when contacting with sector once more, pressure spring is compressed again.So move in circles, realize the radial seal of air preheater.Its advantage mainly is: the wear-resistant sealing plate of (1) oblique installing type be installed with the wear-resistant ceramic piece on the outer side surface, the wear-resistant ceramic piece is contacted with sector, have good sealing effect, wear-resisting property is good, advantages such as long service life.Operation causes the rotor thermal distortion under the long-term hot situation of air preheater, and the resiliently deformable of sealing device through pressure spring compensates the distortion of rotor automatically, reaches sealing effect, but long-time running.(2) this device can carry out modularization production, and perfect technology is on-the-spot easy for installation, short construction period.(3) this device can reduce the air leak rate of air curtain of air preheater, thereby improves efficiency of boiler, cuts down the consumption of energy.The rotary regenerative air preheater of suitable large-sized boiler is done radial seal and is used.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention;
Fig. 2 is the left TV structure schematic representation of articulated type spring guiding controlling device among Fig. 1.
Embodiment
Accompanying drawing is nonrestrictive to disclose the concrete structure schematic representation in the embodiments of the invention, further describes as follows in conjunction with accompanying drawing:
Referring to accompanying drawing 1～2,1 among the figure is the wear-resistant ceramic piece, the 2nd, and the wear-resistant sealing plate of oblique installing type, the 3rd, swivel gear circular shaft; The 4th, fixed plate, the 5th, supporting base, the 6th, П type fixed base, 7 nuts; The 8th, bearing pin I, the 9th, adjustable lever I, the 10th, pressure spring, 11 bearing pin II; The 12nd, adjustable lever II, the 13rd, adjusting nut, the 14th, air preheater sector, the 15th, air preheater rotor.
Air preheater multi-arm type ceramic sealing device of the present invention; Its structure is as shown in Figure 1; Mainly form by the wear-resistant sealing plate of oblique installing type (2), fixed plate (4) and articulated type spring guiding controlling device; The wear-resistant sealing plate of said oblique installing type (2) fixedly be to link together through swivel gear circular shaft (3) and fixed plate (4) by its inner side surface; Said articulated type spring guiding controlling device comprises rotatable parts, adjustable lever, pressure spring (10), supporting base (5) and adjusting nut (13), and wherein, adjustable lever is connected to form joint rotation by adjustable lever I (9) and adjustable lever II (12) through bearing pin II (11); The upper end of adjustable lever I (9) is installed on the back side of the wear-resistant sealing plate of oblique installing type (2) through rotatable parts; The lower end of adjustable lever II (12) is provided with screw thread and the circular hole that passes on supporting base (5) front end is connected with adjusting nut (13), and pressure spring (10) is sleeved on the adjustable lever, and the upper end of pressure spring (10) is located by the boss on the adjustable lever I (9); The other end is installed on the peripheral recessed circle of supporting base (5) circular hole, and supporting base (5) rear end is packed on the fixed plate (4) of corresponding position.
Not being conditioned bar in order to ensure the wear-resistant sealing plate of oblique installing type (2) tires out and freedom of movement; Above-mentioned rotatable parts comprise П type fixed base (6), nut (7), bearing pin I (8); The dual-side of said П type fixed base (6) is respectively equipped with pin shaft hole; The base of П type fixed base (6) is packed on the back side of the wear-resistant sealing plate of oblique installing type (2); Adjustable lever I (9) upper end is provided with pin shaft hole; Adjustable lever I (9) upper end places in the notch of П type fixed base (6) and through the bearing pin I (8) that is inserted on the pin shaft hole and is installed on the П type fixed base, and the other end of bearing pin I (8) is provided with screw thread and fixing with nut (7), and adjustable lever I (9) can be around bearing pin I (8) rotation flexibly.Its structure is as shown in Figure 2.
Be installed with wear-resistant ceramic piece (1) on the outer side surface of the wear-resistant sealing plate of said oblique installing type (2).
During installation; With the plane of inclination of the wear-resistant sealing plate of oblique installing type (2) corresponding to sense of rotation; Fixed plate (4) is installed on the rotor (15) of air preheater with bolt, is the length of can regulate adjustable lever and then regulates pressure spring (10) initial compression location status through adjusting nut (13).When the wear-resistant sealing plate of oblique installing type (2) beginning and sector (14) when contacting; Its surface of contact is an inclined-plane; Can guarantee any position and sector (14) on the inclined-plane all have wear-resistant buffering when contacting effect, after the contact, its point of contact slides into the top of wear-resistant ceramic sheet (1) along the inclined-plane; Pressure spring in this process (10) is by progressively compression, and the adjustable lever of this moment moves in the circular hole of supporting base (5) and not influence the wear-resistant sealing plate of oblique installing type (2) free movable.The top studs with the wear-resistant sealing plate of oblique installing type (2) of wear-resistant ceramic piece (1) and goes up slip at sector (14); Make the very little gap of script between wear-resistant sealing plate of oblique installing type (2) and the sector (14); Can reach no gap very soon through break-in, thereby reach sealing effect.When the wear-resistant sealing plate of oblique installing type (2) and sector (14) were thrown off, pressure spring (10) returned to initial compressed state, when once more with sector (14) when contacting, pressure spring (10) is compressed again.So move in circles, realize the radial seal of air preheater.
Claims (3)
1. air preheater multi-arm type ceramic sealing device; Comprise wear-resistant sealing plate of oblique installing type and fixed plate; The wear-resistant sealing plate of said oblique installing type fixedly be to link together through swivel gear circular shaft and fixed plate by its inner side surface, it is characterized in that also comprising articulated type spring guiding controlling device, said articulated type spring guiding controlling device comprises rotatable parts, adjustable lever, pressure spring, supporting base and adjusting nut; Wherein, Adjustable lever is connected to form joint rotation by adjustable lever I and adjustable lever II through bearing pin II, the upper end of adjustable lever I through rotatable parts be installed in the wear-resistant sealing plate of oblique installing type on the back side, the circular hole that the lower end of adjustable lever II is provided with screw thread and passes the supporting base front end is connected with adjusting nut; Pressure spring is sleeved on the adjustable lever; The upper end of pressure spring is by the location of the boss on the adjustable lever I, and the other end is installed on the peripheral recessed circle of supporting base circular hole, and the supporting base rear end is packed on the fixed plate of corresponding position.
2. air preheater multi-arm type ceramic sealing device as claimed in claim 1; It is characterized in that said rotatable parts comprise П type fixed base, nut, bearing pin I; The dual-side of said П type fixed base is respectively equipped with pin shaft hole; The base of П type fixed base be packed in the wear-resistant sealing plate of oblique installing type on the back side, adjustable lever I upper end is provided with pin shaft hole, adjustable lever I upper end places in the notch of П type fixed base and through the bearing pin I that is inserted on the pin shaft hole and is installed on the П type fixed base; The other end of bearing pin I is provided with screw thread and fixes with nut, and adjustable lever I can rotate around bearing pin I flexibly.
3. according to claim 1 or claim 2 air preheater multi-arm type ceramic sealing device, it is characterized in that the wear-resistant sealing plate of said oblique installing type be installed with the wear-resistant ceramic piece on the outer side surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210297371.1A CN102777603B (en) | 2012-08-21 | 2012-08-21 | Multi-arm ceramic sealing device of air preheater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210297371.1A CN102777603B (en) | 2012-08-21 | 2012-08-21 | Multi-arm ceramic sealing device of air preheater |
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| CN102777603A true CN102777603A (en) | 2012-11-14 |
| CN102777603B CN102777603B (en) | 2015-01-07 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322584A (en) * | 2013-06-06 | 2013-09-25 | 杨建明 | Rolling elastic sealing device for air preheater and application thereof |
| CN103411760A (en) * | 2013-07-31 | 2013-11-27 | 江苏鑫信润科技有限公司 | Service life performance test bench of flexible sealing structure of rotary air pre-heater |
| CN103411230A (en) * | 2013-07-31 | 2013-11-27 | 江苏鑫信润科技有限公司 | Clockwise-anticlockwise rotation flexible sealing device of air pre-heater |
| CN104214452A (en) * | 2013-06-04 | 2014-12-17 | 宁夏嘉翔自控技术有限公司 | Elastic sealing structure |
| CN105090514A (en) * | 2015-08-12 | 2015-11-25 | 李纯 | Floating oil seal with ceramic composite abrasion-resistant surfaces and metal stamping ring bodies |
| 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 |
| CN105937862A (en) * | 2016-06-21 | 2016-09-14 | 陕西益杰机电科技有限公司 | HDT thermal compensation follow sealing system for rotary heat exchanger |
| CN106439897A (en) * | 2015-10-13 | 2017-02-22 | 江苏鑫信润科技有限公司 | Air preheater automatic tracking reactive compensation three-way self-sealing device |
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| CN202756617U (en) * | 2012-08-21 | 2013-02-27 | 江苏鑫信润科技有限公司 | Multi-arm type ceramic sealing device of air pre-heater |
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2012
- 2012-08-21 CN CN201210297371.1A patent/CN102777603B/en active Active
Patent Citations (6)
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| JPH0763488A (en) * | 1993-08-30 | 1995-03-10 | Abb Gadelius Kk | Rotary regenerative heat exchange |
| CN2357312Y (en) * | 1998-11-23 | 2000-01-05 | 吴同钧 | Labyrinth sealer for rotary air preheater |
| US6789605B1 (en) * | 2002-04-08 | 2004-09-14 | Jackie L. Kaser | Sealing element for a regenerative heat exchanger |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214452A (en) * | 2013-06-04 | 2014-12-17 | 宁夏嘉翔自控技术有限公司 | Elastic sealing structure |
| CN103322584A (en) * | 2013-06-06 | 2013-09-25 | 杨建明 | Rolling elastic sealing device for air preheater and application thereof |
| CN103322584B (en) * | 2013-06-06 | 2015-06-24 | 南京博沃科技发展有限公司 | Rolling elastic sealing device for air preheater and application thereof |
| CN103411760A (en) * | 2013-07-31 | 2013-11-27 | 江苏鑫信润科技有限公司 | Service life performance test bench of flexible sealing structure of rotary air pre-heater |
| CN103411230A (en) * | 2013-07-31 | 2013-11-27 | 江苏鑫信润科技有限公司 | Clockwise-anticlockwise rotation flexible sealing device of air pre-heater |
| CN103411760B (en) * | 2013-07-31 | 2017-05-10 | 江苏鑫信润科技有限公司 | Service life performance test bench of flexible sealing structure of rotary air pre-heater |
| CN105090514A (en) * | 2015-08-12 | 2015-11-25 | 李纯 | Floating oil seal with ceramic composite abrasion-resistant surfaces and metal stamping ring bodies |
| CN106439897A (en) * | 2015-10-13 | 2017-02-22 | 江苏鑫信润科技有限公司 | Air preheater automatic tracking reactive compensation three-way self-sealing device |
| 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 |
| CN105937862A (en) * | 2016-06-21 | 2016-09-14 | 陕西益杰机电科技有限公司 | HDT thermal compensation follow sealing system for rotary heat exchanger |
| CN105937862B (en) * | 2016-06-21 | 2018-04-10 | 陕西益杰机电科技有限公司 | A kind of HDT thermal compensation Follow-up seal systems of heat wheel |
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| CN102777603B (en) | 2015-01-07 |
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Address after: 223112 Jiangsu Hongze Huaian County Economic Development Zone Science and Technology Pioneer Park 12 Patentee after: Jiangsu Xin Xin Run Polytron Technologies Inc Address before: 211103 No. 102, Tianning Road, Jiangning science and Technology Park, Nanjing, Jiangsu Patentee before: Jiangsu Sunray Technology Co., Ltd. |