CN104791492A - Air preheater and cold-end radial or axial sealing device of same - Google Patents
Air preheater and cold-end radial or axial sealing device of same Download PDFInfo
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- CN104791492A CN104791492A CN201510228444.5A CN201510228444A CN104791492A CN 104791492 A CN104791492 A CN 104791492A CN 201510228444 A CN201510228444 A CN 201510228444A CN 104791492 A CN104791492 A CN 104791492A
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- protecting sheet
- cold junction
- air preheater
- plate
- axial
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
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- 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
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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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Supply (AREA)
Abstract
The invention discloses an air preheater and a cold-end radial or axial sealing device of the same. A sealing structure comprises a piece-shaped sealing plate. The sealing plate is of a stacking structure formed by stacking a leeward side protection plate, a middle sealing plate and a windward side protection plate. The leeward side protection plate and any side of the windward side protection plate are each provided with a bending segment. Both the two bending segments are located on the same side of the sealing plate after the leeward side protection plate and the windward side protection plate are stacked. The two bending segments are opposite in the bending direction and form a V-shaped clamping opening with an opening facing outwards in the length direction of the sealing plate. The middle sealing plate is partially located in the V-shaped clamping opening. The free end, stretching out of the V-shaped clamping opening, of the middle sealing plate is located outside the V-shaped clamping opening. Meanwhile, the invention discloses the air preheater using the sealing structure. The sealing structure is good in airtightness and long in service life, and the air preheater using the sealing structure is low in leakage rate and low in fault rate.
Description
Technical field
The present invention relates to air preheater component and air preheater construction applications, particularly relate to the seal arrangement that a kind of air preheater and cold junction thereof are radial or axial.
Background technique
Rotary regenerative air preheater is called for short air preheater, it is the heat-exchange apparatus of large-sized boiler, due to relative to tubular air preheater, there is compact structure, volume is little, heat exchanger surface density is high, overall mass is light, metal consumption is few, arrange the features such as easy for installation, cold end corrosion is lighter, station boiler is widely used.Air preheater be the flue gas heat utilizing boiler to discharge come preheating enter boiler participate in burning needed for air, or as the recovery plant of boiler smoke heat, so that above heat to be used as the equipment of other purposes such as fuel dehumidifying, heating, the object that this equipment is arranged improves the efficiency of boiler.The air leak rate of air curtain of air preheater is the important indicator affecting efficiency of boiler, and the above air leak rate of air curtain of air preheater of the prior art is generally 6%-8% under normal circumstances, and poor sealing is even up to 20%, so the efficiency impact of sealing technique on boiler of air preheater is large.
In prior art, in air preheater, flue gas and air generally adopt adverse current, and the one end arranging flue gas inlet and air outlet slit in air preheater is defined as hot junction, and the other end of air preheater is cold junction.Air preheater leak out that being divided into directly leaks out and carry leaks out, both inleakage ratios are generally less than 1:3, and in directly leaking out, the radial inleakage of cold junction accounts for more than 30% of total directly inleakage, and the ratio that the radial inleakage of the air preheater cold junction that diameter is larger accounts for total directly inleakage is larger.The direct air leakage source of above cold junction is from the hot shaping in the course of the work of air preheater rotor and the mushroom deformation of gravity deformation superposition formation.In prior art, due to air preheater rotor, to be positioned at the distortion of one end of cold junction less compared to one end amount of deformation being positioned at hot junction, simultaneously cold junction hot fluid have passed through heat release, hot-cold fluid does not absorb heat, cause the design of the existing sealing configuration to cold junction or further transformation dynamics is little, be unfavorable for macroeconomic on-road efficiency and the technology controlling and process of steam generator system.
Summary of the invention
For in above-mentioned prior art, due to air preheater rotor, to be positioned at the distortion of one end of cold junction less compared to one end amount of deformation being positioned at hot junction, simultaneously cold junction hot fluid have passed through heat release, hot-cold fluid does not absorb heat, cause the design of the existing sealing configuration to cold junction or further transformation dynamics is little, be unfavorable for the macroeconomic on-road efficiency of steam generator system and the problem of technology controlling and process, the invention provides the seal arrangement that a kind of air preheater and cold junction thereof are radial or axial.
For solving the problem, radial or the axial seal arrangement of air preheater provided by the invention and cold junction thereof solves problem by following technological points: the seal arrangement that air preheater cold junction is radial or axial, comprise sealing plate in the form of sheets, described sealing plate is by leeward side protecting sheet, the stepped construction that intermediate seal plate and weather protecting sheet are laminated, described intermediate seal board is located between leeward side protecting sheet and weather protecting sheet, and any side of leeward side protecting sheet and weather protecting sheet all has one section of bending section, leeward side protecting sheet and the stacked rear two sections of bending sections of weather protecting sheet be all positioned at sealing plate homonymy, and the bending direction of two bending sections is contrary, two bending sections form one along sealing plate length direction and the outside V-arrangement bayonet socket of opening direction, described intermediate seal plate portion is arranged in V-arrangement bayonet socket, and the free end end of the intermediate seal plate stretched out by V-arrangement bayonet socket is positioned at outside V-arrangement bayonet socket.
Concrete, above structure for being arranged on the radial direction of the cold junction end of rotor or/and the axis of cold junction side, with structure above in air preheater working procedure with rotor turns.The intermediate seal plate arranged, for the formation of a spoiler, forms one brattice to produce the wind effect of disturbing when rotor turns, hinders the leakage of rotor cold junction end face and cold junction axis, with the axial seal of the radial seal and cold junction that realize rotor cold junction, the leeward side protecting sheet arranged and weather protecting sheet be mainly used in the fixing of intermediate seal plate and realize to middle sealing plate protection: in the rotation process of rotor, the free end end vibrational power flow be positioned at outside V-arrangement bayonet socket of the intermediate seal plate stretched out by V-arrangement bayonet socket makes the partial Upwind of stretching out relative to V-arrangement bayonet socket edge, simultaneously in the mushroom deformation process of rotor, the free end of intermediate seal plate also may contact with sector or stator interior and produces frictional force and even collide, like this, above process makes intermediate seal plate in the process of distortion, the inwall of V-arrangement bayonet socket has supporting effect to middle sealing plate, pressure on it is become in deformation process to disperse above intermediate seal, reach the effect reducing localized stress, by adopting the intermediate seal plate material of suitable material, the above rich sexual cycle test of intermediate seal plate portion more than 1,000,000 times be clamped in V-arrangement bayonet socket can be realized, meanwhile, the leeward side protecting sheet of setting and weather protecting sheet also have the effect strengthening wind and disturb as the bending section that V bayonet socket is avoided, reach the object of strengthening radial direction or axial seal performance.
As the preferred embodiment of above structure, be set to be increased or reduction, to adapt to the mushroom deformation of working rotor process to opposite side width linearity by its side with upper sealing panel.
This structure applies to cold junction end face or cold junction radial seal structure compared to tradition, directly isolate runner realize sealing because intermediate seal plate can contact with stator or sector to be formed, coordinate the wind of above-mentioned generation to disturb effect simultaneously, this structure is made to have good sealing, by the restriction to this structure shape, this structure is made also to have longer working life.
As the further restriction to air preheater cold junction radial direction or axial seal arrangement; as being a kind ofly easy to realize, to what there is during the distortion of middle sealing plate the leeward side protecting sheet of good power peptizaiton and weather protecting sheet bending section shape, form is set; described bending section is the arc plate of leeward side protecting sheet to correspondence or weather protecting sheet curving, or described bending section is the flat board of leeward side protecting sheet to correspondence or weather protecting sheet curving.
As the further restriction to air preheater cold junction radial direction or axial seal arrangement, be the stress reducing intermediate seal section distortion starting point, described flat board is connected by one section of arcuate segment with other parts of corresponding leeward side protecting sheet or weather protecting sheet.
As the further restriction to air preheater cold junction radial direction or axial seal arrangement; the wind produced for strengthening above structure further disturbs the intensity of effect; described weather protecting sheet is also provided with the projection of at least one section of protuberance; described projection is corrugated, and the width direction of projection and sealing plate width direction in the same way.More than produce blast in undulatory projection by the principle of impeller; leak to form strong obstruction; above being convenient in undulatory convex form absorbs by distortion the thermal stress produced when weather protecting sheet is heated simultaneously, and is unlikely to make above thermal stress cause the excessive thermal distortion of intermediate seal plate and affect the sealing effect of above structure.
As the further restriction to air preheater cold junction radial direction or axial seal arrangement; based on the working life of above structure; as being a kind ofly convenient to draw materials, the comprehensive preferred version of the performance such as intensity, rigidity and wear resistance; described intermediate seal plate be thickness between 2 to 4mm, the trade mark is the steel plate of 15CrMn; described leeward side protecting sheet and weather protecting sheet are all for being formed by the Q215 steel plate curving of thickness between 3 to 7mm, and the described trade mark: 15CrMn is derived from GB/T 3077-2006.
As the further restriction to air preheater cold junction radial direction or axial seal arrangement; position for ease of intermediate seal plate free end end adjusts; so that reach optimum life-span and the preferred embodiment of leakage rate in the Installation and Debugging process of above structure; also comprise connecting bolt; described wind side protecting sheet, intermediate seal plate are connected by connecting bolt with weather protecting sheet, and the bolt hole that described intermediate seal plate passes for connecting bolt is bar shaped bolt hole.
A kind of air preheater adopting above sealing configuration, comprise rotor, the radial direction of described rotor cold junction end face and/or the axial direction of cold junction side are all fixed with the seal arrangement that multiple above air preheater cold junction described in any one scheme is radial or axial, and cold junction end face/or and cold junction side on sealing configuration separately V-arrangement bayonet socket be all positioned at respective free side.The radial and axial leak-down rate of air preheater cold junction of above structure is little, simultaneously due to the specific structural type of sealing configuration, and the failure rate is low of above air preheater.
As the further restriction to above air preheater, for the benefit of stablize the rotation form of air preheater rotor, described cold junction end face/or uniform in the form of a ring with the axle center of the equal rotor of sealing configuration on cold junction side.
The present invention has following beneficial effect:
The invention discloses the seal arrangement that a kind of air preheater and cold junction thereof are radial or axial, sealing structure for being arranged on the radial direction of the cold junction end of rotor or/and the axis of cold junction side, with structure above in air preheater working procedure with rotor turns.The intermediate seal plate arranged, for the formation of a spoiler, forms one brattice to produce the wind effect of disturbing when rotor turns, hinders the leakage of rotor cold junction end face and cold junction axis, with the axial seal of the radial seal and cold junction that realize rotor cold junction, the leeward side protecting sheet arranged and weather protecting sheet be mainly used in the fixing of intermediate seal plate and realize to middle sealing plate protection: in the rotation process of rotor, the free end end vibrational power flow be positioned at outside V-arrangement bayonet socket of the intermediate seal plate stretched out by V-arrangement bayonet socket makes the partial Upwind of stretching out relative to V-arrangement bayonet socket edge, simultaneously in the mushroom deformation process of rotor, the free end of intermediate seal plate also may contact with sector or stator interior and produces frictional force and even collide, like this, above process makes intermediate seal plate in the process of distortion, the inwall of V-arrangement bayonet socket has supporting effect to middle sealing plate, pressure on it is become in deformation process to disperse above intermediate seal, reach the effect reducing localized stress, by adopting the intermediate seal plate material of suitable material, the above rich sexual cycle test of intermediate seal plate portion more than 1,000,000 times be clamped in V-arrangement bayonet socket can be realized, meanwhile, the leeward side protecting sheet of setting and weather protecting sheet also have the effect strengthening wind and disturb as the bending section that V bayonet socket is avoided, reach the object of strengthening radial direction or axial seal performance.
This sealing configuration applies to cold junction end face or cold junction radial seal structure compared to tradition, directly isolate runner realize sealing because intermediate seal plate can contact with stator or sector to be formed, coordinate the wind of above-mentioned generation to disturb effect simultaneously, this structure is made to have good sealing, by the restriction to this structure shape, this structure is made also to have longer working life.
The invention also discloses a kind of air preheater using above sealing configuration, the radial and axial leak-down rate of this air preheater cold junction is little simultaneously, simultaneously due to the specific structural type of sealing configuration, and the failure rate is low of above air preheater.
Accompanying drawing explanation
Fig. 1 is structure side view and the scheme of installation of seal arrangement that in embodiment 1 and embodiment 3, air preheater cold junction of the present invention is radial or axial and the air preheater adopting sealing structure;
Fig. 2 is structure side view and the scheme of installation of seal arrangement that in embodiment 2 and embodiment 3, air preheater cold junction of the present invention is radial or axial and the air preheater adopting sealing structure.
Figure acceptance of the bid note is respectively: 1, rotor, and 2, leeward side protecting sheet, 3, intermediate seal plate, 4, weather protecting sheet, 41, protruding, 5, V-arrangement bayonet socket, 6, connecting bolt.
Embodiment
The invention provides the seal arrangement that a kind of air preheater and cold junction thereof are radial or axial, for solving: in prior art, due to air preheater rotor, to be positioned at the distortion of one end of cold junction less compared to one end amount of deformation being positioned at hot junction, simultaneously cold junction hot fluid have passed through heat release, hot-cold fluid does not absorb heat, cause the design of the existing sealing configuration to cold junction or further transformation dynamics is little, be unfavorable for the macroeconomic on-road efficiency of steam generator system and the problem of technology controlling and process.Be convenient to reach following technique effect by structure provided by the invention: sealing configuration can realize the radial and axial sealing of good air preheater rotor cold junction, simultaneously this sealing configuration long service life; The air preheater of this sealing configuration is adopted to have less air leak rate of air curtain and rate of fault.
Below in conjunction with embodiment, the present invention is described in further detail, but the present invention is not limited only to following examples:
Embodiment 1:
As shown in Figure 1, the seal arrangement that air preheater cold junction is radial or axial, comprise sealing plate in the form of sheets, described sealing plate is by leeward side protecting sheet 2, the stepped construction that intermediate seal plate 3 and weather protecting sheet 4 are laminated, described intermediate seal plate 3 is fastened between leeward side protecting sheet 2 and weather protecting sheet 4, and leeward side protecting sheet 2 all has one section of bending section with any side of weather protecting sheet 4, leeward side protecting sheet 2 and the stacked rear two sections of bending sections of weather protecting sheet 4 be all positioned at sealing plate homonymy, and the bending direction of two bending sections is contrary, two bending sections form one along sealing plate length direction and the outside V-arrangement bayonet socket 5 of opening direction, described intermediate seal plate 3 part is arranged in V-arrangement bayonet socket 5, and the free end end of the intermediate seal plate 3 stretched out by V-arrangement bayonet socket 5 is positioned at outside V-arrangement bayonet socket 5.
In the present embodiment, above structure, for being arranged on the radial direction of the cold junction end of rotor 1 or/and the axis of cold junction side, is rotated with rotor 1 with structure above in air preheater working procedure.The intermediate seal plate 3 arranged, for the formation of a spoiler, forms one brattice to produce the wind effect of disturbing when rotor 1 rotates, hinders the leakage of rotor 1 cold junction end face and cold junction axis, with the axial seal of the radial seal and cold junction that realize rotor 1 cold junction, the protection that the leeward side protecting sheet 2 arranged and weather protecting sheet 4 are mainly used in the fixing of intermediate seal plate 3 and realize middle sealing plate 3: in the rotation process of rotor 1, the free end end vibrational power flow be positioned at outside V-arrangement bayonet socket 5 of the intermediate seal plate 3 stretched out by V-arrangement bayonet socket 5 makes the partial Upwind of stretching out relative to V-arrangement bayonet socket 5 edge, simultaneously in the mushroom deformation process of rotor 1, the free end of intermediate seal plate 3 also may contact with sector or stator interior and produces frictional force and even collide, like this, above process makes intermediate seal plate 3 in the process of distortion, the inwall of V-arrangement bayonet socket 5 has supporting effect to middle sealing plate 3, pressure on it is become in deformation process to disperse above intermediate seal, reach the effect reducing localized stress, by adopting intermediate seal plate 3 material of suitable material, the above rich sexual cycle test of intermediate seal plate 3 part more than 1,000,000 times be clamped in V-arrangement bayonet socket 5 can be realized, meanwhile, the leeward side protecting sheet 2 of setting and weather protecting sheet 4 also have the effect strengthening wind and disturb as the bending section that V bayonet socket is avoided, reach the object of strengthening radial direction or axial seal performance.
In the present embodiment, as the preferred embodiment of above structure, be set to be increased or reduction, to adapt to the mushroom deformation of rotor 1 working procedure to opposite side width linearity by its side with upper sealing panel.
This structure applies to cold junction end face or cold junction radial seal structure compared to tradition, directly isolate runner realize sealing because intermediate seal plate 3 can contact with stator or sector to be formed, coordinate the wind of above-mentioned generation to disturb effect simultaneously, this structure is made to have good sealing, by the restriction to this structure shape, this structure is made also to have longer working life.
Embodiment 2:
The present embodiment is further qualified on the basis of embodiment 1; as shown in Figure 2; as the further restriction to air preheater cold junction radial direction or axial seal arrangement; as what there is when being a kind ofly easy to realize, being out of shape middle sealing plate 3 the leeward side protecting sheet 2 of good power peptizaiton and weather protecting sheet 4 bending section shape, form is set; described bending section is the arc plate of leeward side protecting sheet 2 to correspondence or weather protecting sheet 4 curving, or described bending section is the flat board of leeward side protecting sheet 2 to correspondence or weather protecting sheet 4 curving.
As the further restriction to air preheater cold junction radial direction or axial seal arrangement, be the stress reducing intermediate seal section distortion starting point, described flat board is connected by one section of arcuate segment with other parts of corresponding leeward side protecting sheet 2 or weather protecting sheet 4.
As the further restriction to air preheater cold junction radial direction or axial seal arrangement; the wind produced for strengthening above structure further disturbs the intensity of effect; described weather protecting sheet 4 is also provided with the projection 41 of at least one section of protuberance; described protruding 41 in corrugated, and the width direction of protruding 41 and sealing plate width direction in the same way.More than in undulatory protruding 41 by impeller principle produce blast; leak to form strong obstruction; above being convenient in undulatory protruding 41 forms absorbs by distortion the thermal stress produced when weather protecting sheet 4 is heated simultaneously, and is unlikely to make above thermal stress cause the excessive thermal distortion of intermediate seal plate 3 and affect the sealing effect of above structure.
As the further restriction to air preheater cold junction radial direction or axial seal arrangement; based on the working life of above structure; as being a kind ofly convenient to draw materials, the comprehensive preferred version of the performance such as intensity, rigidity and wear resistance; described intermediate seal plate 3 be thickness between 2 to 4mm, the trade mark is the steel plate of 15CrMn, described leeward side protecting sheet 2 and weather protecting sheet 4 are all for being formed by the Q215 steel plate curving of thickness between 3 to 7mm.
As the further restriction to air preheater cold junction radial direction or axial seal arrangement; position for ease of intermediate seal plate 3 free end end adjusts; so that reach optimum life-span and the preferred embodiment of leakage rate in the Installation and Debugging process of above structure; also comprise connecting bolt 6; described wind side protecting sheet, intermediate seal plate 3 are connected by connecting bolt 6 with weather protecting sheet 4, and the bolt hole that described intermediate seal plate 3 passes for connecting bolt 6 is bar shaped bolt hole.
Embodiment 3:
The present embodiment is based on embodiment 1 or embodiment 2, as depicted in figs. 1 and 2, a kind of air preheater of the sealing configuration scheme adopting above embodiment to provide, comprise rotor 1, the radial direction of described rotor 1 cold junction end face and/or the axial direction of cold junction side are all fixed with the seal arrangement that multiple above air preheater cold junction described in any one scheme is radial or axial, and cold junction end face/or and cold junction side on sealing configuration separately V-arrangement bayonet socket 5 be all positioned at respective free side.The radial and axial leak-down rate of air preheater cold junction of above structure is little, simultaneously due to the specific structural type of sealing configuration, and the failure rate is low of above air preheater.
As the further restriction to above air preheater, for the benefit of stablize the rotation form of air preheater rotor 1, described cold junction end face/or uniform in the form of a ring with the axle center of the equal rotor of sealing configuration 1 on cold junction side.
Above content is the further description done the present invention in conjunction with concrete preferred implementation, can not assert that the specific embodiment of the present invention is confined to these explanations.For general technical staff of the technical field of the invention, not departing from other mode of executions drawn under technological scheme of the present invention, all should be included in protection scope of the present invention.
Claims (8)
1. the seal arrangement that air preheater cold junction is radial or axial, comprise sealing plate in the form of sheets, it is characterized in that, described sealing plate is by leeward side protecting sheet (2), the stepped construction that intermediate seal plate (3) and weather protecting sheet (4) are laminated, described intermediate seal plate (3) is fastened between leeward side protecting sheet (2) and weather protecting sheet (4), and leeward side protecting sheet (2) all has one section of bending section with any side of weather protecting sheet (4), leeward side protecting sheet (2) and the stacked rear two sections of bending sections of weather protecting sheet (4) be all positioned at sealing plate homonymy, and the bending direction of two bending sections is contrary, two bending sections form one along sealing plate length direction and the outside V-arrangement bayonet socket (5) of opening direction, described intermediate seal plate (3) part is arranged in V-arrangement bayonet socket (5), and the free end end of the intermediate seal plate (3) stretched out by V-arrangement bayonet socket (5) is positioned at outside V-arrangement bayonet socket (5).
2. the seal arrangement that air preheater cold junction according to claim 1 is radial or axial; it is characterized in that; described bending section is the arc plate of leeward side protecting sheet (2) to correspondence or weather protecting sheet (4) curving, or described bending section is the flat board of leeward side protecting sheet (2) to correspondence or weather protecting sheet (4) curving.
3. the seal arrangement that air preheater cold junction according to claim 2 is radial or axial, it is characterized in that, described flat board is connected by one section of arcuate segment with other parts of corresponding leeward side protecting sheet (2) or weather protecting sheet (4).
4. the seal arrangement that air preheater cold junction according to claim 1 is radial or axial; it is characterized in that; described weather protecting sheet (4) is also provided with the projection (41) of at least one section of protuberance; described projection (41) in corrugated, and the width direction of protruding (41) and sealing plate width direction in the same way.
5. the seal arrangement that air preheater cold junction according to claim 1 is radial or axial; it is characterized in that; described intermediate seal plate (3) for thickness between 2 to 4mm, the trade mark is the steel plate of 15CrMn, described leeward side protecting sheet (2) and weather protecting sheet (4) are all for being formed by the Q215 steel plate curving of thickness between 3 to 7mm.
6. the seal arrangement that air preheater cold junction according to claim 1 is radial or axial; it is characterized in that; also comprise connecting bolt (6); described wind side protecting sheet (2), intermediate seal plate (3) are connected by connecting bolt (6) with weather protecting sheet (4), and the bolt hole that described intermediate seal plate (3) passes for connecting bolt (6) is bar shaped bolt hole.
7. an air preheater, comprise rotor (1), it is characterized in that, the radial direction of described rotor (1) cold junction end face and/or the axial direction of cold junction side are all fixed with multiple seal arrangement as radial or axial in the air preheater cold junction in claim 1 to 6 as described in any one, and cold junction end face/or and cold junction side on sealing configuration separately V-arrangement bayonet socket (5) be all positioned at respective free side.
8. a kind of air preheater according to claim 7, described cold junction end face/or uniform in the form of a ring with the axle center of the equal rotor of sealing configuration (1) on cold junction side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510228444.5A CN104791492B (en) | 2015-05-07 | 2015-05-07 | Air preheater and its cold end sealing device axially or radially |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510228444.5A CN104791492B (en) | 2015-05-07 | 2015-05-07 | Air preheater and its cold end sealing device axially or radially |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104791492A true CN104791492A (en) | 2015-07-22 |
| CN104791492B CN104791492B (en) | 2017-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510228444.5A Active CN104791492B (en) | 2015-05-07 | 2015-05-07 | Air preheater and its cold end sealing device axially or radially |
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| CN (1) | CN104791492B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110645359A (en) * | 2019-09-24 | 2020-01-03 | 航天科工哈尔滨风华有限公司电站设备分公司 | Mechanical self-correcting air preheater sealing device |
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| CN204574098U (en) * | 2015-05-07 | 2015-08-19 | 四川东能节能技术有限公司 | The hermetically-sealed construction that air preheater and cold junction thereof are radial or axial |
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2015
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| JPH1038092A (en) * | 1996-05-17 | 1998-02-13 | Toyota Motor Corp | Sealing structure between rotating member and fixed member |
| CN101788154A (en) * | 2009-12-04 | 2010-07-28 | 宁波市镇海福尔迅电梯部件厂 | Elastic sheet contact type sealing device of rotary air preheater |
| CN102705859A (en) * | 2011-03-28 | 2012-10-03 | 杨秋 | Flexible sealing device of rotary type air preheater |
| CN202203982U (en) * | 2011-08-04 | 2012-04-25 | 江苏鑫信润科技有限公司 | Depressing-type flexible sealing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110645359A (en) * | 2019-09-24 | 2020-01-03 | 航天科工哈尔滨风华有限公司电站设备分公司 | Mechanical self-correcting air preheater sealing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104791492B (en) | 2017-03-08 |
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