CN202101267U - Elastic rolling contact type sealing device for rotary type air preheater - Google Patents
Elastic rolling contact type sealing device for rotary type air preheater Download PDFInfo
- Publication number
- CN202101267U CN202101267U CN2011201879412U CN201120187941U CN202101267U CN 202101267 U CN202101267 U CN 202101267U CN 2011201879412 U CN2011201879412 U CN 2011201879412U CN 201120187941 U CN201120187941 U CN 201120187941U CN 202101267 U CN202101267 U CN 202101267U
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- air preheater
- torsion spring
- seal plate
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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 utility model relates to a sealing device for an air preheater, particularly discloses an elastic rolling contact type sealing device for a rotary type air preheater. The sealing device includes a main seal plate, an auxiliary seal plate and a seal folded plate positioned therebetween, and is characterized in that a roller limiting plate vertical to the plane surfaces of the main seal plate and the seal folded plate is welded at the two end heads of the main seal plate and the seal folded plate; two ends of a roller are installed on the roller limiting plate and are in welded connection with two ends of the seal folded plate; the two end heads of the auxiliary seal plate are in spot welding with the roller limiting plate; a round steel sleeve is in spot welding with the main seal plate; a round steel is sleeved with a torsion spring sleeve; and the main seal plate, the seal folded plate and a torsion spring are connected to form a hinge structure through the round steel sleeve. The elastic rolling contact type sealing device for the rotary type air preheater has simple structure, reasonable design, excellent sealing effect, excellent safety performance, long service life, is wash resistant, high-temperature resistant and corrosion resistant, and is suitable for wide popularization and application.
Description
(1) technical field
The utility model relates to a kind of sealing device of air preheater, particularly a kind of elastic rolling contact type sealing device of rotary regenerative air preheater.
(2) background technology
Rotary regenerative air preheater is a kind of heat-exchange apparatus that is used for large-sized boiler, and it utilizes the fume afterheat of boiler combustion to add hot-air, and air is heated, and flue gas is cooled, thereby reduces exhaust gas temperature and improve boiler efficiency, and helps the combustion process of fuel.Under hot running status, each parts of air preheater all can expand because of being heated, and rotor can become mushroom, and the gap width between rotor and fanning strip, the arc generally can increase.Under the hot running status,,, possibly cause air preheater stuck if too small if excesssive gap will cause the air-heater leakage rate to increase.The air leak rate of air curtain of air preheater is one of main economic and technical norms of air preheater
.Reduce the air leak rate of air curtain of air preheater, thereby improve heat exchange efficiency, the reduction blower fan power consumption of air preheater.And then raising boiler efficiency.So carry out the air preheater sealing, the especially sealing between air side and the fume side
,Seem particularly important.
At present, the encapsulating method of large thermal power plant air preheater generally adopts adjustable automatic tracking type sealing device or fixed non-adjustable fixed sealing device.But adjustable from the motion tracking sealing device, it is dumb or be failure to actuate to tend to occur action, in the long-time running process, exists poor reliability, is prone to problem out of control, so air leak rate of air curtain can not keep stable, even installs and cause the air leak rate of air curtain increase after out of control.Fixed non-adjustable sealing device; Apex seal because be fixing can not mode, after the thermal deformation of rotor mushroom, the slit that can't remedy can appear in the hot junction radial outside; Even because heating power calculates is not that absolute value is adjusted by heating power calculating swell increment when cold conditions is adjusted; Under many objective factor influences, other radial position also can cause air leak rate of air curtain uncontrollable to optimum state because of the slit of leaking out appears in distortion.In addition, also have prior art in use, run into following problem: the easy ash deposit and slag buildup in the junction of major and minor sealing plate, not easy to clean; Former snap ring is prone to bite, fracture; Spring steel ejects easily and the two ends of spring steel make the roller wearing and tearing easily.
(3) summary of the invention
The utility model provides a kind of sealing effectiveness better in order to remedy the deficiency of prior art, and stronger anti-of security performance wash away, the elastic rolling contact type sealing device of the rotary regenerative air preheater of wear-resistant, high temperature resistant, corrosion-resistant characteristic.
The utility model is realized through following technical scheme:
A kind of elastic rolling contact type sealing device of rotary regenerative air preheater; Comprise primary seal plate, secondary sealing plate and be positioned at sealing flap between the two; It is characterized in that: be welded with the roller bearing limiting plate vertical on the two ends of primary seal plate and sealing flap with its plane; The roller bearing two ends are installed on the roller bearing limiting plate and with sealing flap two ends and are welded to connect; Secondary sealing plate two ends and the spot welding of roller bearing limiting plate, point is welded with the round steel sleeve pipe on the primary seal plate, is arranged with the torsion spring sleeve pipe on the round steel and through the round steel sleeve pipe primary seal plate, sealing flap and torsion spring is connected to hinge structure; The base and the spot welding of torsion spring sleeve pipe of secondary sealing plate form complete elastic packing assembly.
Wherein the torsion spring set pipe box outside of torsion spring how is protected torsion spring.
The elasticity hinge typed structure that the utility model has a torsion spring makes the sealing device can resilient automatic adjusting and the distance of fanning strip, keeps zero distance to contact with fanning strip all the time, and sealing effectiveness is better; Use and overhaul convenient; Be provided with the sealing flap between primary seal plate and the secondary sealing plate, solved the phenomenon that the junction of major and minor sealing plate is saved bit by bit dust easily, be convenient to cleaning; The roller bearing two ends are installed in and are welded to sealing flap both sides on the roller bearing limiting plate; Roller bearing can freely roll, the friction between minimizing and the fanning strip, thus reduce wear.
The more excellent scheme of the utility model is:
Said primary seal plate is provided with waist-shaped hole, is used for adjustment and fanning strip gap, is installed on the dividing plate of rotor storehouse, and set bolt passes waist-shaped hole through the original circular port of storehouse dividing plate and connects.
Said primary seal plate and secondary sealing plate material are carbon steel, and the sealing flap is the hardox steel, and roller bearing, round steel sleeve pipe and torsion spring sleeve pipe are common stainless steel, and torsion spring is the x750 stainless steel.
The utility model is simple in structure, and is reasonable in design, good sealing effect, and security performance is strong, anti-ly washes away, high temperature resistant, corrosion-resistant, and long service life is suitable for wide popularization and application.
(4) description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the main TV structure sketch map of the utility model;
Fig. 2 is the left TV structure sketch map of the utility model.
Among the figure, 1 roller bearing limiting plate, 2 roller bearings, 3 secondary sealing plates, 4 round steel, 5 round steel sleeve pipes, 6 torsion springs, 7 torsion spring sleeve pipes, 8 primary seal plates, 9 sealing flaps.
(5) specific embodiment
Accompanying drawing is a kind of specific embodiment of the utility model.This embodiment comprises primary seal plate 8, secondary sealing plate 3 and is positioned at sealing flap 9 between the two; Be welded with the roller bearing limiting plate 1 vertical on the two ends of primary seal plate 8 and sealing flap 9 with its plane; Roller bearing 2 two ends are installed on the roller bearing limiting plate 1 and with sealing flap 9 two ends and are welded to connect; Secondary sealing plate 3 two ends and 1 spot welding of roller bearing limiting plate; Point is welded with round steel sleeve pipe 5 on the primary seal plate 8, is arranged with torsion spring sleeve pipe 7 on the round steel 4 and through round steel sleeve pipe 5 primary seal plate 8, sealing flap 9 and torsion spring 6 is connected to hinge structure, the base of secondary sealing plate 3 and 7 spot welding of torsion spring sleeve pipe; Said primary seal plate 8 is provided with waist-shaped hole; Said primary seal plate 8 is a carbon steel with secondary sealing plate 3 materials, and sealing flap 9 is the hardox steel, and roller bearing 2, round steel sleeve pipe 5 are common stainless steel with torsion spring sleeve pipe 7, and torsion spring 4 is the x750 stainless steel.
Be provided with sealing flap 9 between primary seal plate 8 and the secondary sealing plate 3, solved the phenomenon that the junction of primary seal plate 8, secondary sealing plate 3 is saved bit by bit dust easily, be convenient to cleaning; Spot welding round steel sleeve pipe 5 on primary seal plate 8 and sealing flap 9 links together primary seal plate 8, sealing flap 9, torsion spring 6 through round steel sleeve pipe 5 with round steel 4, forms the elasticity hinge structure; The elasticity hinge typed structure that has a torsion spring 6 makes the sealing device can resilient automatic adjusting and the distance of fanning strip, keeps zero distance to contact with fanning strip all the time, and sealing effectiveness is better; Use and overhaul conveniently, torsion spring sleeve pipe 7 is enclosed within the outside of torsion spring 6, is used to protect torsion spring 6; Roller bearing 2 two ends are installed in and are welded to sealing flap 9 both sides on the roller bearing limiting plate 1, and roller bearing 2 can freely roll, the friction between minimizing and the fanning strip; Thereby reduce wear; Secondary sealing plate 3 both sides and 1 spot welding of roller bearing limiting plate, secondary sealing plate 3 bottom sides and 7 spot welding of torsion spring sleeve pipe form complete elastic packing assembly.
Claims (3)
1. the elastic rolling contact type sealing device of a rotary regenerative air preheater; Comprise primary seal plate (8), secondary sealing plate (3) and be positioned at sealing flap (9) between the two; It is characterized in that: be welded with the roller bearing limiting plate (1) vertical on the two ends of primary seal plate (8) and sealing flap (9) with its plane; Roller bearing (2) two ends are installed in roller bearing limiting plate (1) and upward and with sealing flap (9) two ends are welded to connect; Secondary sealing plate (3) two ends and roller bearing limiting plate (1) spot welding; Primary seal plate (8) is gone up point and is welded with round steel sleeve pipe (5), is arranged with torsion spring sleeve pipe (7) on the round steel (4) and through round steel sleeve pipe (5) primary seal plate (8), sealing flap (9) and torsion spring (6) is connected to hinge structure, the base of secondary sealing plate (3) and torsion spring sleeve pipe (7) spot welding.
2. the elastic rolling contact type sealing device of rotary regenerative air preheater according to claim 1, it is characterized in that: said primary seal plate (8) is provided with waist-shaped hole.
3. the elastic rolling contact type sealing device of rotary regenerative air preheater according to claim 1 and 2; It is characterized in that: said primary seal plate (8) is a carbon steel with secondary sealing plate (3) material; Sealing flap (9) is the hardox steel; Roller bearing (2), round steel sleeve pipe (5) are common stainless steel with torsion spring sleeve pipe (7), and torsion spring (6) is the x750 stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201879412U CN202101267U (en) | 2011-06-07 | 2011-06-07 | Elastic rolling contact type sealing device for rotary type air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201879412U CN202101267U (en) | 2011-06-07 | 2011-06-07 | Elastic rolling contact type sealing device for rotary type air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202101267U true CN202101267U (en) | 2012-01-04 |
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ID=45387276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201879412U Expired - Fee Related CN202101267U (en) | 2011-06-07 | 2011-06-07 | Elastic rolling contact type sealing device for rotary type air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202101267U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865370A (en) * | 2012-08-24 | 2013-01-09 | 冯振洲 | Sealing device of dynamic and static combination part of rotating equipment |
| CN102954221A (en) * | 2012-11-07 | 2013-03-06 | 宁夏新能达电力技术有限公司 | Joint interchange sealing device |
| CN103322584A (en) * | 2013-06-06 | 2013-09-25 | 杨建明 | Rolling elastic sealing device for air preheater and application thereof |
| CN104534482A (en) * | 2014-12-31 | 2015-04-22 | 杭州新世纪能源环保工程股份有限公司 | Thermal expansion structure of joint part of garbage incinerator |
| CN107181173A (en) * | 2017-06-19 | 2017-09-19 | 峨眉山长宇电气有限公司 | A kind of case becomes edge seal structure |
-
2011
- 2011-06-07 CN CN2011201879412U patent/CN202101267U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865370A (en) * | 2012-08-24 | 2013-01-09 | 冯振洲 | Sealing device of dynamic and static combination part of rotating equipment |
| CN102954221A (en) * | 2012-11-07 | 2013-03-06 | 宁夏新能达电力技术有限公司 | Joint interchange sealing device |
| 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 |
| CN104534482A (en) * | 2014-12-31 | 2015-04-22 | 杭州新世纪能源环保工程股份有限公司 | Thermal expansion structure of joint part of garbage incinerator |
| CN107181173A (en) * | 2017-06-19 | 2017-09-19 | 峨眉山长宇电气有限公司 | A kind of case becomes edge seal structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120104 Termination date: 20150607 |
|
| EXPY | Termination of patent right or utility model |