CN102865370A - Sealing device of dynamic and static combination part of rotating equipment - Google Patents
Sealing device of dynamic and static combination part of rotating equipment Download PDFInfo
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- CN102865370A CN102865370A CN2012103050249A CN201210305024A CN102865370A CN 102865370 A CN102865370 A CN 102865370A CN 2012103050249 A CN2012103050249 A CN 2012103050249A CN 201210305024 A CN201210305024 A CN 201210305024A CN 102865370 A CN102865370 A CN 102865370A
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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 provides a sealing device of a dynamic and static combination part of rotating equipment. The sealing device mainly comprises a spring sealing plate, a steel wire brush sealing plate and a pressing plate, and the spring sealing plate and the steel wire brush sealing plate are fixed on a stator or a rotor by bolts, nuts and the pressing plate. The sealing device is characterized in that a fixing plate of a hinge, together with the spring sealing plate, is fixed on the stator or the rotor by the bolts, the nuts and the pressing plate; a bottom plate is arranged on the fixing plate of the hinge; a wedge-shaped block is arranged on another blade of the hinge; and a spring is fixed on the bottom plate and is fixed on the other blade of the hinge and the wedge-shaped block by a hinge pin. The sealing device has the advantages that a sealing effect is improved, air leaking rate is reduced, and running reliability of the sealing device is improved; and when the sealing device is used for an air preheater, a gap is not reserved between contact parts of the rotor and the stator, erosive wear is avoided, a certain round end surface deformation and a certain deformation in the peripheral direction are allowed in a thermal running state of the rotor, technical procedures of field installation are greatly simplified, a construction period is short, and an effect is good.
Description
Technical field
The present invention relates to the be association of activity and inertia seal arrangement at position of rotating machinery.
Background technique
Rotary regenerative air preheater is generally adopted on big-and-middle-sized station boiler, and air leak rate of air curtain is one of its important economic indicator.Effective control air leak rate of air preheater can send from reduction, induced draught fan power consumption and improve two aspects of efficiency of boiler and obtain energy saving profit.Thereby no matter be domestic and international air preheater manufacturer or vast air preheater applying unit, all in the air leak rate of air curtain of making great efforts to reduce aspect different air preheater.
Traditional rotary regenerative air preheater generally all adopts the gapped sealing technique of rigidity, namely keeps a minimum clearance between the sound structure, reaches the inleakage minimum.Because the mushroom deformation problem of air preheater, and this distortion constantly changes with load and ambient temperature, so that we are difficult to find the gap width between the sound structure an of the best.Therefore the shortcoming of the gapped sealing technique of this rigidity is that air leak rate of air curtain is bigger than normal, and especially after the wearing and tearing of operation a period of time sealing configuration increase, air leak rate of air curtain will significantly raise.And the Economy of leaking out to boiler operatiopn has a significant impact.According to test statistics, join the every reduction by 1% of 300MW unit boiler air leak rate of air preheater, can reduce unit coal consumption 0.16g/kWh.
Summary of the invention
The object of the present invention is to provide a kind of seal arrangement that reduces air leak rate of air preheater.
The invention provides the be association of activity and inertia seal arrangement at position of a kind of rotating machinery, mainly comprise spring sealed, wire brush diaphragm seal and pressing plate, spring sealed and wire brush diaphragm seal are fixed on stator or the rotor with bolt, nut and pressing plate, it is characterized in that: at stator or rotor with bolt, nut and pressing plate with the spring sealed fixing fixed plate that folding is arranged, on the fixed plate of folding base plate is arranged, another blade in folding has wedge-shaped blocks, be fixed with spring at base plate, spring is fixed on another blade and wedge-shaped blocks of folding with bearing pin.
After rotor motion entered sealing station, spring was compressed, and slide block relies on spring tension and wire brush elasticity to guarantee close contact between rotor and the stator, forms tight gapless sealing configuration; After rotor motion left sealing station, the folding spring flicked, and returns to original state.
The be association of activity and inertia seal arrangement at position of rotating machinery provided by the invention, its spring can be fixed in the limited ring of base plate, the restraining spring radial displacement.
The be association of activity and inertia seal arrangement at position of rotating machinery provided by the invention, it can the limited location device on another blade of base plate and folding, comes off because fold opening is excessive with spring free.
The be association of activity and inertia seal arrangement at position of rotating machinery provided by the invention, its limit stoper can be the screw bolt and nut that connects another blade of base plate and folding, in order to regulate the maximum open amount of folding, avoid spring when rotor does not contact with stator, to be in free extended configuration.
The be association of activity and inertia seal arrangement at position of rotating machinery provided by the invention, can there be the self-lubrication alloy bar on the top of its wedge-shaped blocks, to reduce wearing and tearing, prolongs operating life.
The be association of activity and inertia seal arrangement at position of rotating machinery provided by the invention, its advantage is: improve sealing effect, reduce air leak rate of air curtain, improved the operational reliability of device, adopt composite contact formula sealing configuration, can reduce air leak rate of air preheater and unit generation coal consumption, recover boiler output, improve the Economy of efficiency of boiler and unit operation; 1. can not form seal clearance when being used for air preheater, and good sealing effect is very close to each other between rotor and the stator contact position, does not then have air-flow to pass through, and has also just avoided the problem of erosive wear, thus the long-time running of sealing system energy; 2. adopt folding limit spring and flexible steel wire brush, allow the rotor of air preheater that certain nose circle facial disfigurement and the distortion of circumferencial direction are arranged under hot running state, be particularly suitable for the transformation of air preheater; 3. composite contact formula seal arrangement adopts the modularization production technology, is assembled into single seal element, to ovality, the parallelism of both ends of the surface, the planeness of air preheater rotor; Rotor rotates jerk value and requires to reduce, and has greatly simplified field erected process, short construction period, effective.
Description of drawings
Fig. 1 is the be association of activity and inertia structural representation of seal arrangement at position of rotating machinery.
Embodiment
The be association of activity and inertia seal arrangement at position of rotating machinery, its structure as shown in Figure 1, comprise spring sealed 10 and pressing plate 11, spring sealed 10 usefulness bolts 13, nut 12 and pressing plate 11 are fixed on the gusset 15 of rotor, gusset 15 usefulness bolts 13 at rotor, the fixed plate that also has folding 4 that nut 12 and pressing plate 11 are fixed, be welded with base plate 9 on the fixed plate of folding 4, another blade in folding 4 has wedge- shaped blocks 2,7 li of limited rings on base plate 9 are fixed with spring 6, spring 6 usefulness bearing pins 3 are fixed on another blade and wedge-shaped blocks 2 of folding 4, bearing pin 3 heads are processed into spherical structure, in case elongating or shortening in the process, scrapes with its card by spring, there is self-lubrication alloy bar 1 on the top of wedge-shaped blocks 2, limited location device on another blade of base plate 9 and folding 4, limit stoper is bolt 5 and the nut 8 that connects another blade of base plate 9 and folding 4, uses bolt 13 on the gusset 15 of rotor, spring sealed 14 of the in addition wire brush that nut 12 and pressing plate 11 are fixed.16 is sectors of stator among the figure.
At the sealing position that rotary regenerative air preheater is association of activity and inertia, stator one end or rotor one end install this composite contact formula seal arrangement additional.By telescopic adjustment effect and the wire brush self compounding of folding spring structure, rotor motion enters after the sealing station, relies on spring tension and wire brush flexible, guarantees close contact between rotor and the stator, forms tight gapless sealing configuration.After rotor motion left sealing station, the folding spring flicked, steel wire is also straightened by curved, returns to original state.After it entered sealing station again, folding spring and wire brush were compressed again, and slide block and steel wire are close to sealing surface, so looped, and guaranteed all the time tightly contact between sealing station place stator and the rotor.Limit structure design among the present invention, disconnecting prevention structure design and anti-wear technological design have improved the operational reliability of device from different aspects.
Claims (7)
1. the rotating machinery seal arrangement at position of being association of activity and inertia, mainly comprise spring sealed, wire brush diaphragm seal and pressing plate, spring sealed and wire brush diaphragm seal are fixed on stator or the rotor with bolt, nut and pressing plate, it is characterized in that: at stator or rotor with bolt, nut and pressing plate with the spring sealed fixing fixed plate that folding is arranged, on the fixed plate of folding base plate is arranged, another blade in folding has wedge-shaped blocks, be fixed with spring at base plate, spring is fixed on another blade and wedge-shaped blocks of folding with bearing pin.
2. according to the be association of activity and inertia seal arrangement at position of rotating machinery claimed in claim 1, it is characterized in that: described spring is fixed in the limited ring of base plate.
3. according to the be association of activity and inertia seal arrangement at position of rotating machinery claimed in claim 1, it is characterized in that: described on another blade of base plate and folding the limited location device.
4. according to the be association of activity and inertia seal arrangement at position of rotating machinery claimed in claim 2, it is characterized in that: described on another blade of base plate and folding the limited location device.
5. according to the be association of activity and inertia seal arrangement at position of rotating machinery claimed in claim 3, it is characterized in that: described limit stoper is the screw bolt and nut that connects another blade of base plate and folding.
6. according to the be association of activity and inertia seal arrangement at position of rotating machinery claimed in claim 4, it is characterized in that: described limit stoper is the screw bolt and nut that connects another blade of base plate and folding.
7. according to the be association of activity and inertia seal arrangement at position of the described rotating machinery of one of claim 1 ~ 6, it is characterized in that: there is the self-lubrication alloy bar on the top of described wedge-shaped blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103050249A CN102865370A (en) | 2012-08-24 | 2012-08-24 | Sealing device of dynamic and static combination part of rotating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103050249A CN102865370A (en) | 2012-08-24 | 2012-08-24 | Sealing device of dynamic and static combination part of rotating equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102865370A true CN102865370A (en) | 2013-01-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103050249A Pending CN102865370A (en) | 2012-08-24 | 2012-08-24 | Sealing device of dynamic and static combination part of rotating equipment |
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| CN (1) | CN102865370A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706674A (en) * | 2020-07-31 | 2020-09-25 | 大唐滨州发电有限公司 | Radial sealing system of fit contact type air preheater |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5145011A (en) * | 1989-07-19 | 1992-09-08 | NGK Insulations, Ltd. | Sealing members for use in gas preheater |
| CN201425316Y (en) * | 2009-05-18 | 2010-03-17 | 冯伟忠 | Contact type sealing structure applied to rotary air pre-heater |
| CN201705932U (en) * | 2010-03-24 | 2011-01-12 | 沈阳瑞源电力设备工程技术有限公司 | Flexible contact sealing device |
| CN102022543A (en) * | 2010-11-26 | 2011-04-20 | 北京化工大学 | Corrugated elastic seal and rotary air pre-heater sealing device |
| CN202101267U (en) * | 2011-06-07 | 2012-01-04 | 山东泓奥电力科技有限公司 | Elastic rolling contact type sealing device for rotary type air preheater |
| CN202851961U (en) * | 2012-08-24 | 2013-04-03 | 冯振洲 | Sealing device of static and dynamic combining part of rotating equipment |
-
2012
- 2012-08-24 CN CN2012103050249A patent/CN102865370A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5145011A (en) * | 1989-07-19 | 1992-09-08 | NGK Insulations, Ltd. | Sealing members for use in gas preheater |
| CN201425316Y (en) * | 2009-05-18 | 2010-03-17 | 冯伟忠 | Contact type sealing structure applied to rotary air pre-heater |
| CN201705932U (en) * | 2010-03-24 | 2011-01-12 | 沈阳瑞源电力设备工程技术有限公司 | Flexible contact sealing device |
| CN102022543A (en) * | 2010-11-26 | 2011-04-20 | 北京化工大学 | Corrugated elastic seal and rotary air pre-heater sealing device |
| CN202101267U (en) * | 2011-06-07 | 2012-01-04 | 山东泓奥电力科技有限公司 | Elastic rolling contact type sealing device for rotary type air preheater |
| CN202851961U (en) * | 2012-08-24 | 2013-04-03 | 冯振洲 | Sealing device of static and dynamic combining part of rotating equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706674A (en) * | 2020-07-31 | 2020-09-25 | 大唐滨州发电有限公司 | Radial sealing system of fit contact type air preheater |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130109 |