CN105570462B - Rotary regenerative air heater elastic contact type sealing device - Google Patents
Rotary regenerative air heater elastic contact type sealing device Download PDFInfo
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- CN105570462B CN105570462B CN201610092441.8A CN201610092441A CN105570462B CN 105570462 B CN105570462 B CN 105570462B CN 201610092441 A CN201610092441 A CN 201610092441A CN 105570462 B CN105570462 B CN 105570462B
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- support plate
- plane
- air heater
- sealing device
- rotary regenerative
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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
- F16J15/18—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
- F16J15/24—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings with radially or tangentially compressed packing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Supply (AREA)
- Package Closures (AREA)
Abstract
The invention discloses a kind of rotary regenerative air heater elastic contact type sealing devices, including support plate, the top of support plate is fixed together with mandrel, axle sleeve is set in mandrel, the side of support plate connects Limit screw by supporting block, Limit screw is arranged with adjusting nut and spring, the top of spring is equipped with the contact slipper for sealing, there are the gaps for contact slipper activity between contact slipper and Limit screw, contact slipper side is fixed on axle sleeve, and sealing and the fanning strip of contact slipper form angle.Each component die mould of sealing device of the present invention forms, formed precision is higher, cleverly bending structure causes welding to be unlikely to deform for it, compared with existing structure, the service life under bad working environments is extended, improves leakproofness and reliability, original diaphragm seal can be replaced during installation completely, without accurately being calculated hot gap again, the various operating modes under hot mushroom deformation can be met, installation and debugging are convenient.
Description
Technical field
The present invention relates to a kind of rotary regenerative air heater sealing device more particularly to a kind of rotary regenerative air heater elastic contact types
Sealing device belongs to water-tight equipment technical field.
Background technology
Leaking out for rotary regenerative air heater can be divided into two kinds：Structure is leaked out（Or it carries and leaks out）With directly leak out.Due to sky
It is divided into several storehouse lattice inside pre- device, this construction determines that structure is leaked out and is inevitable, it is however generally that, leak out duty for the part
The share of the pre- total inleakage of device is less, less than 10%.The main form of leaking out of air preheater is directly to leak out, rotary regenerative air heater
Inevitably there are gaps between sound, and primary air pressure is again more much higher than secondary wind pressure and the wind pressure of fume side, in pressure difference
Under effect, a wind direction secondary side and fume side directly leakage and secondary wind direction fume side are leaked out.It leaks out and not only increases boiler
Heat loss due to exhaust gas, and the equipment low-temperature corrosion caused by smoke temperature reduces has been aggravated, also increase wind turbine power consumption, Air Leakage
Also boiler output can be directly affected when serious because of deficiency in draught.And there are complicated, peaces for existing rotary regenerative air heater sealing
The problems such as debugging process is cumbersome is filled, and leakproofness and reliability are relatively low, service life is short.
Invention content
The technical problems to be solved by the invention are the defects of overcoming the prior art, provide a kind of rotary regenerative air heater elasticity
Contact type sealing device, simple in structure, easy to assembly, sealing effect is good.
In order to solve the above technical problems, the present invention is as follows using technical solution：
Rotary regenerative air heater elastic contact type sealing device, it is characterised in that：It is slided including support plate, mandrel, axle sleeve, contact
Block, Limit screw and spring, the support plate offer mounting hole, and top and the mandrel of the support plate are fixed together, institute
It states axle sleeve to be set in mandrel, the side of the support plate is equipped with Limit screw parallel with it, the support plate and limiting spiral shell
Bar is connected by supporting block, and one end of the supporting block is fixed on the supporting plate, and Limit screw runs through supporting block, and in supporting block
Lower section is arranged with adjusting nut, and top is arranged with spring, and the top of the spring is equipped with the contact slipper for sealing, described to connect
Touching sliding block has connecting portion and sealing, and the bottom end of the connecting portion and spring are in close contact and between the top of Limit screw
There are the gap for contact slipper activity, the side of the connecting portion is fixed on axle sleeve, the fan of the sealing and air preheater
Shape plate forms angle.
Aforementioned rotary regenerative air heater elastic contact type sealing device, it is characterised in that：Apron plate is further included, is protected before described
Plate has the first plane and the second plane, and first plane and the second plane form inverted l-shaped structure, the first plane setting
It away from the side of contact slipper and is fixed on axle sleeve in support plate, second plane is fixed on the top surface of axle sleeve.
Aforementioned rotary regenerative air heater elastic contact type sealing device, it is characterised in that：Further include limited block, the limiting
Block is arranged between the first plane and support plate and is shorter in length than distance between the two, and the limited block is fixed on the first plane
Or in support plate.
Aforementioned rotary regenerative air heater elastic contact type sealing device, it is characterised in that：The top welding of the support plate
In mandrel；The connecting portion, the second plane, is welded on axle sleeve first plane；One end welding of the supporting block
On the supporting plate；The limited block is welded in the first plane or support plate.
Aforementioned rotary regenerative air heater elastic contact type sealing device, it is characterised in that：The spring is by high-temperature alloy
It is made.
Aforementioned rotary regenerative air heater elastic contact type sealing device, it is characterised in that：The contact slipper by high temperature resistant,
Resistant material is made, and with ceramic coating.
Aforementioned rotary regenerative air heater elastic contact type sealing device, it is characterised in that：The support plate is by high temperature resistant, resistance to
Corrosion material is made, thickness 3mm.
Aforementioned rotary regenerative air heater elastic contact type sealing device, it is characterised in that：The angular range for 10 ° ~
30°。
Aforementioned rotary regenerative air heater elastic contact type sealing device, it is characterised in that：The mounting hole is waist-shaped hole.
The present invention has following advantageous effect：
（1）The rotary regenerative air heater elastic contact type sealing device of the present invention, spring are made of high-temperature alloy, simultaneously also
There are good processability and welding performance, contact slipper increases wearability with extending the longevity with fanning strip contact surface using coating
Life, meanwhile, sealing element has good resilience, can restore to the original state rapidly after nonclient area is entered, permanently effective guarantee
Contact slipper forms Interference contact between working region and fanning strip, keeps relatively low air leak rate of air curtain；Each component die mould forms, into
Type precision is higher, and cleverly bending structure causes welding to be unlikely to deform, and compared with existing structure, extending makes under bad working environments
With the service life, sealing performance and reliability are improved；
（2）The rotary regenerative air heater elastic contact type sealing device of the present invention, when installation, can replace original diaphragm seal completely,
Running current is no more than 2A, and installation maximum interference amount, without accurately being calculated hot gap again, can meet heat up to 15mm
Various operating modes under state mushroom deformation, installation and debugging are convenient.
Description of the drawings
Fig. 1 is the structure diagram of the rotary regenerative air heater elastic contact type sealing device of the present invention.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and be not intended to limit the protection scope of the present invention and limit the scope of the invention.
A kind of rotary regenerative air heater elastic contact type sealing device, structure is as shown in Figure 1, including mandrel 1, axle sleeve 2, preceding shield
Plate 3, limited block 4, support plate 5, contact slipper 6, Limit screw 7 and spring 8 offer waist-shaped hole in support plate 5, for that will prop up
Fagging 5 is mounted on the partition board of air preheater, and the top of support plate 5 is welded in mandrel 1, and axle sleeve 2 is set in mandrel 1, support
The side of plate 5 is equipped with Limit screw 7, and support plate 5 is connect with Limit screw 7 by supporting block 9, and one end of supporting block 9 is welded on
In support plate 5, Limit screw 7 runs through supporting block 9, and adjusting nut 10 is arranged with below supporting block 9, and top is arranged with spring
8, the top of spring 8 is equipped with the contact slipper 6 for sealing, and contact slipper 6 has connecting portion 61 and sealing 62, connecting portion 61
Bottom end and spring 8 is in close contact and there are the gap for the activity of contact slipper 6, connecting portions between the top of Limit screw 7
61 side is welded on axle sleeve 2, and the fanning strip of sealing 62 and air preheater forms 10 ° ~ 30 ° of angle.Apron plate 3 has the
One plane 31 and the second plane 32, the first plane 31 and the second plane 32 form inverted l-shaped structure, and the first plane 31 is arranged on support
Plate 5 is on the side of contact slipper 6 and welding axle sleeve 2, and the second plane 32 is welded on the top surface of axle sleeve 2,3 energy of apron plate
It is enough, it prevents flue dust from entering acceleration components aging, protects mandrel 1 and axle sleeve 2, extend its service life.Limited block 4 is welded on first
In plane 31 or support plate 5, and be shorter in length than distance between the two, by with 3 mating reaction of apron plate, axis can be prevented
Set 2 is excessive relative to the angle that mandrel 1 rotates, and further prevents 6 rotational angle of contact slipper excessive.
Each component of the present invention is made of high temperature resistant, resistant material, and the thickness of contact slipper 6 is 3mm, support plate 5
Thickness for 3mm, 8 diameter 16-20mm of spring is made of high-temperature alloy GH4145, and maximum operation (service) temperature, should up to 650 DEG C
Alloy has good corrosion-resistant and antioxygenic property in 980 DEG C of temperature below, with higher intensity less than 800 DEG C, 540
There is preferable resistance to relaxation property, while also good processability and welding performance below DEG C.Contact slipper 6 is by resistance to height
Temperature, resistant material are made, and with ceramic coating, increase wearability and service life using coating with the contact surface of fanning strip.It connects
When touching, contact slipper 6 forms a sealing surface with fanning strip bottom surface, since the friction coefficient between coating and fanning strip is smaller,
The two Interference contact will not cause fanning strip rigid damage.Simultaneously as the effect of spring 8, contact slipper 6 has good
Resilience can restore to the original state rapidly after nonclient area is entered, and permanently effective guarantee contact slipper 6 is in working region and sector
Interference contact is formed between plate, keeps relatively low air leak rate of air curtain.
The sealing device of the present invention enters fanning strip region along air preheater rotor direction of rotation, that is, is transferred to working condition,
As shown in Figure 1, contact slipper 6 and fanning strip bottom surface Interference contact, 8 stress of spring is to adapt to fanning strip sealing surface.In practical fortune
In row, the seal clearance of air preheater can change with load variations, and the gap of different location is not consistent, and spring 8 is then
It is adapted to the variation in gap and freely changes length, remain the Interference contact state with fan-shaped plate surface, play anti-
Leak-stopping wind action.When contact slipper 6 leaves fanning strip, spring 8 will restore to the original state under the action of natural resiliency power, with this
It moves in circles, the long-term air leak rate of air curtain for maintaining air preheater relatively low improves unit efficiency.
The sealing device processing process of the present invention is as follows：（1）It stocks up to suitable dimension and specification；（2）By axle sleeve 2,
Apron plate 3, contact slipper 6 are connected by welding manner；（3）Load onto mandrel 1, both ends full weld；（4）Support plate 5 is welded on the heart
On axis 1, limited block 4 is welded on apron plate 3；（5）Supporting block 9 and support plate 5 are welded together；（6）Limit screw 7 is through branch
Bracer 9, and it is arranged adjusting nut 10 in tail end；（7）Spring 8 is set in 7 top of Limit screw.
The sealing device installation and debugging method of the present invention is as follows：In general, the cold conditions between contact slipper 6 and fanning strip
Gap takes the cold conditions gap design value between former diaphragm seal and fanning strip.Specific to pacify timing, waist-shaped hole alignment is empty pre- in support plate 5
Mounting hole on device partition board penetrates fixing bolt, and Limit screw slides about 7, finds cold conditions gap accurately, and fastening adjustment nut 10 is
It can.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformation can also be made, these are improved and deformation
Also it should be regarded as protection scope of the present invention.
Claims (7)
1. rotary regenerative air heater elastic contact type sealing device, it is characterised in that：Including support plate（5）, mandrel（1）, axle sleeve
（2）, contact slipper（6）, Limit screw（7）And spring（8）, the support plate（5）Offer mounting hole, the support plate（5）
Top and mandrel（1）It is fixed together, the axle sleeve（2）It is set in mandrel（1）On, the support plate（5）Side be equipped with
Limit screw parallel with it（7）, the support plate（5）With Limit screw（7）Pass through supporting block（9）Connection, the supporting block
（9）One end be fixed on support plate（5）On, Limit screw（7）Through supporting block（9）, and in supporting block（9）Lower section is arranged with tune
Save nut（10）, top is arranged with spring（8）, the spring（8）Top be equipped with for sealing contact slipper（6）, it is described
Contact slipper（6）With connecting portion（61）And sealing（62）, the connecting portion（61）Bottom end and spring（8）Be in close contact and
With Limit screw（7）Top between there are for contact slipper（6）The gap of activity, the connecting portion（61）Side be fixed on
Axle sleeve（2）On, the sealing（62）Angle is formed with the fanning strip of air preheater；
Further include apron plate（3）, the apron plate（3）With the first plane（31）With the second plane（32）, first plane
（31）With the second plane（32）Form inverted l-shaped structure, first plane（31）It is arranged on support plate（5）Away from contact slipper
（6）Side and be fixed on axle sleeve（2）On, second plane（32）It is fixed on axle sleeve（2）Top surface on；
Further include limited block（4）, the limited block（4）It is arranged on the first plane（31）With support plate（5）Between and be shorter in length than
Distance between the two, the limited block（4）It is fixed on the first plane（31）Or support plate（5）On.
2. rotary regenerative air heater elastic contact type sealing device according to claim 1, it is characterised in that：The support plate
（5）Top be welded on mandrel（1）On；The connecting portion（61）, first plane（31）, the second plane（32）It is welded on
Axle sleeve（2）On；The supporting block（9）One end be welded on support plate（5）On；The limited block（4）It is welded on the first plane
（31）Or support plate（5）On.
3. rotary regenerative air heater elastic contact type sealing device according to claim 1, it is characterised in that：The spring
（8）It is made of high-temperature alloy.
4. rotary regenerative air heater elastic contact type sealing device according to claim 1, it is characterised in that：The contact is slided
Block（6）It is made of high temperature resistant, resistant material, and with ceramic coating.
5. rotary regenerative air heater elastic contact type sealing device according to claim 1, it is characterised in that：The support plate
（5）It is made of high temperature resistant, resistant material, thickness 3mm.
6. rotary regenerative air heater elastic contact type sealing device according to claim 1, it is characterised in that：The angle model
Enclose is 10 ° ~ 30 °.
7. rotary regenerative air heater elastic contact type sealing device according to claim 1, it is characterised in that：The mounting hole
For waist-shaped hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610092441.8A CN105570462B (en) | 2016-02-19 | 2016-02-19 | Rotary regenerative air heater elastic contact type sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610092441.8A CN105570462B (en) | 2016-02-19 | 2016-02-19 | Rotary regenerative air heater elastic contact type sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105570462A CN105570462A (en) | 2016-05-11 |
| CN105570462B true CN105570462B (en) | 2018-06-15 |
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ID=55880927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610092441.8A Active CN105570462B (en) | 2016-02-19 | 2016-02-19 | Rotary regenerative air heater elastic contact type sealing device |
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| CN (1) | CN105570462B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107270321A (en) * | 2017-08-04 | 2017-10-20 | 四川大智工程技术有限公司 | A kind of intelligent sealing system of air preheater |
| CN108458364B (en) * | 2017-10-11 | 2024-03-01 | 上海敖征实业有限公司 | Air preheater cold end radial seal board position adjusting device and air preheater |
| CN112610978B (en) * | 2020-12-22 | 2023-03-24 | 南京市利澜电力节能科技有限公司 | Novel supporting structure of air preheater gasket |
| CN113883949B (en) * | 2021-10-25 | 2023-06-06 | 河北西柏坡第二发电有限责任公司 | Rotary air preheater self-adjusting sealing device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3954135A (en) * | 1974-12-04 | 1976-05-04 | Deere & Company | Gas turbine engine regenerator seal assembly with floating leaf sealing element |
| CN102588999B (en) * | 2012-02-20 | 2014-04-16 | 江苏鑫信润科技有限公司 | Radial wear-resistant sealing device of air preheater |
| CN102777603B (en) * | 2012-08-21 | 2015-01-07 | 江苏鑫信润科技有限公司 | Multi-arm ceramic sealing device of air preheater |
| CN102944025A (en) * | 2012-11-20 | 2013-02-27 | 孟金来 | Flexible contact type sealing device |
| CN103726734A (en) * | 2014-01-07 | 2014-04-16 | 中铁建工集团北京机械制造有限公司 | Automatic clutch device used at spring fixing end of automatic spring door-closing hinge |
| CN103900099A (en) * | 2014-04-10 | 2014-07-02 | 周惠 | Hinge type air preheating sealing device |
| CN203907657U (en) * | 2014-06-25 | 2014-10-29 | 尹杰 | Anti-wear flexible cermet sealing device of air preheater |
| CN204513445U (en) * | 2015-04-13 | 2015-07-29 | 江西龙源科盛科技环保有限公司 | A kind of rotary regenerative air preheater flexible seal device |
| CN205423830U (en) * | 2016-02-19 | 2016-08-03 | 江苏拓平密封科技有限公司 | Rotation air preheater springiness contaction formula sealing device |
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2016
- 2016-02-19 CN CN201610092441.8A patent/CN105570462B/en active Active
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| CN105570462A (en) | 2016-05-11 |
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Effective date of registration: 20200512 Address after: No.12, yanmahe Road, science and technology entrepreneurship Park, economic development zone, Hongze District, Huai'an City, Jiangsu Province Patentee after: JIANGSU XINXINRUN TECHNOLOGY Co.,Ltd. Address before: 210046, Jiangsu Province, Qixia District, Nanjing Yao street, Gan family side, No. 06 East, building 108, 1 Patentee before: JIANGSU TUOPING SEALING TECHNOLOGY Co.,Ltd. |
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