CN211951650U - Novel combined type air door shaft sealing device - Google Patents
Novel combined type air door shaft sealing device Download PDFInfo
- Publication number
- CN211951650U CN211951650U CN202020422533.XU CN202020422533U CN211951650U CN 211951650 U CN211951650 U CN 211951650U CN 202020422533 U CN202020422533 U CN 202020422533U CN 211951650 U CN211951650 U CN 211951650U
- Authority
- CN
- China
- Prior art keywords
- air door
- ring
- gland
- air
- door body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 title abstract description 29
- 238000012856 packing Methods 0.000 claims abstract description 34
- 210000004907 gland Anatomy 0.000 claims abstract description 26
- 238000010030 laminating Methods 0.000 claims abstract description 10
- 230000008878 coupling Effects 0.000 claims abstract description 4
- 238000010168 coupling process Methods 0.000 claims abstract description 4
- 238000005859 coupling reaction Methods 0.000 claims abstract description 4
- 239000000945 filler Substances 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 5
- 239000007769 metal material Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 238000010298 pulverizing process Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Landscapes
- Sealing Devices (AREA)
Abstract
Novel combined type air door shaft seal device. The air leakage and ash leakage phenomena of the power plant boiler pulverizing system become difficult problems, the air door shaft sealing air leakage is the main part of air duct air leakage, the power plant is not effective in controlling the air door shaft air leakage, and the problem of door shaft sealing leakage cannot be solved. The utility model discloses the constitution includes: the air door body (3), a set of packing ring (5) is installed in proper order to the inside of the air door body, labyrinth seal ring (4), gland (7) is installed in air door body left side, gland right-hand member face and the laminating of packing ring, gland passes through bolt and the door body coupling of air door, the cover has pressure spring (6) and installs between bolt and gland on the bolt, the laminating of air door body right-hand member face and door spindle seal wind-break ring (2), and through welded fastening, gland is passed in proper order in air door spindle (1), a set of packing ring, labyrinth seal ring, the air door body, the door spindle seal wind-break ring. The utility model is used for combined type air door-hinge sealing device.
Description
Technical Field
The utility model relates to a power generation boiler technical field, concretely relates to novel combined type air door-hinge is sealed device.
Background
The air leakage and ash leakage phenomena of boiler powder making systems in the existing coal-fired power plants gradually become a common problem, civilized production of the powder making systems and the reliability of oil systems are seriously influenced, wherein the air leakage of the door shaft seal of a hot air adjusting door and a mixed air door which are arranged on a hot air duct is a main part of the air leakage of the air duct, and the treatment mode of the door shaft air leakage of the existing many power plants is not effective enough, so that the stubborn problem of the door shaft seal leakage can not be thoroughly solved.
The door shaft seal commonly used in hot blast doors of many power plants is in the form of a plenum chamber pressure packing, which has major disadvantages: the installation process has high requirements: when the filler is compressed, if the gap is small, the air door switch is easy to be blocked, if the gap is large, air leakage can be generated, and the air leakage is easy to expand after a long time; secondly, the requirement on the integrity of the filling chamber and the door shaft is high: when the interior of the air door packing chamber or the door shaft is blown and damaged by wind, the gap cannot be eliminated by adding the packing again, hot air is thoroughly isolated, leakage still can be caused, the packing chamber and the door shaft are continuously flushed, and the leakage point is enlarged. The inside protection of air door to the packing chamber is poor: the packing chamber is usually located between the door plate and the door body, and because the space is narrow, a flue gas corridor is easily formed, the wind speed is high, the ash content in the windward is high, the packing chamber is rapidly washed, the abrasion and the damage of the packing chamber are caused, and the sealing performance is influenced.
Disclosure of Invention
The utility model aims at providing a novel combined type air door pivot sealing device, the air door pivot problem of leaking out can effectively be solved to the sealed form of this structure, has improved the civilized health in production field.
The above purpose is realized by the following technical scheme:
the utility model provides a novel combined type air door shaft seal device, its constitution includes: the air door body, the inside a set of packing ring, labyrinth seal ring of installing in proper order of the air door body, the left side of the air door body install gland, gland right-hand member face with the laminating of packing ring, gland pass through the bolt with the door body coupling of air door, the bolt on the cover have a pressure spring and install between bolt and gland, the laminating of door body right-hand member face and the sealed wind-break ring of door spindle to through welded fastening, the air door spindle passes in proper order gland, a set of packing ring the labyrinth seal ring the air door body the sealed wind-break ring of door spindle.
The novel combined type air door shaft sealing device is characterized in that the right end of the labyrinth sealing ring is attached to the inner end face of the air door body, the left end of the labyrinth sealing ring is attached to the packing sealing ring, and the outer diameter of the right end of the packing gland is smaller than the outer diameter of the packing sealing ring.
The novel combined type air door shaft sealing device is characterized in that the labyrinth sealing ring is made of a metal material, and the packing sealing ring is made of graphite.
Has the advantages that:
1. the utility model relates to a novel combined type air door shaft seal device, the sealed realization of this structure
The door shaft seal protection, adjustment and sealing tightness improvement effects are achieved, and the problem of air leakage of the door shaft seal in the prior art is effectively solved.
The utility model discloses a structure mainly divides two parts cooperation work, and the labyrinth seal who is close to the door side plays main throttling action, leans on the packing residual pressure in the outside relatively to gland adopts pressure spring, can adjust the clearance by oneself according to the filler deformation degree, makes the filler remain throughout to compress tightly the state, ensures sealed good, and in addition, the inside wind-break ring that prevents the sealed blow-off of door shaft that sets up of air door protects the door shaft seal not blown off, prolongs the sealed life of door shaft.
The utility model discloses a labyrinth sealing ring material has good sealing performance under high speed condition for metal material, does not need the lubrication, and the maintenance is simple, advantages such as long service life.
The utility model discloses use the sealed problem of leaking out of air door shaft that can effectively solve new form, improve the civilized health in production field, this structure has that the system transformation work load is little, safety ring protects, improves the door shaft and seals tightness, the simple convenient advantage of maintaining of system.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
Wherein: 1. the air door comprises an air door shaft, 2 a door shaft sealing wind-blocking ring, 3 an air door body, 4 a labyrinth sealing ring, 5 a packing sealing ring, 6 a compression spring, 7 and a packing gland.
The specific implementation mode is as follows:
example 1:
the utility model provides a novel combined type air door shaft seal device, its constitution includes: air door body 3, air door body inside install a set of packing ring 5, labyrinth seal ring 4 in proper order, air door body left side install gland 7, gland right-hand member face with the laminating of packing ring, gland pass through the bolt with air door body coupling, the bolt on the cover have pressure spring 6 and install between bolt and gland, air door body right side end and the laminating of door spindle seal wind-break ring 2 to through welded fastening, air door spindle 1 passes in proper order gland, a set of packing ring labyrinth seal ring the air door body the door spindle seal wind-break ring.
Example 2:
according to embodiment 1 novel combined type air door shaft sealing device, labyrinth seal ring right-hand member with the air door body in the terminal surface laminating, its left end with the laminating of packing seal ring, gland right-hand member external diameter size be less than packing seal ring external diameter.
Example 3:
according to the novel composite air door shaft sealing device in the embodiment 1 or 2, the labyrinth sealing rings are made of metal materials, and one group of the packing sealing rings are made of graphite;
novel combined type air door shaft sealing device's technical scheme reform transform the air door sealed form, change former pure filler formula into the combined type and seal, arrange "self compensating filler + labyrinth seals + inside guard ring" integrative compound is sealed from outside-in proper order promptly, its each partial function is respectively:
filling a chamber: the automatic adjustment of the packing clearance can be realized by adopting a spring self-compensating gland;
② mechanical labyrinth seal: the wind pressure at the door shaft is greatly reduced through labyrinth throttling;
protecting ring of internal sealing chamber: direct air blowing is shielded inside the air door, so that the sealing chamber is prevented from being blown by air;
the novel seal realizes the functions of protecting and adjusting the door shaft seal and improving the sealing tightness, and effectively solves the problem of air leakage of the door shaft seal.
The composite door shaft seal solves the problem of air leakage of the air door shaft, and is realized by replacing an air door provided with a novel door shaft seal; according to the specification of the original air door shaft, the composite seal is customized and replaced;
after a certain power plant uses the novel door shaft seal of this application, the effect is obvious, fundamentally has solved sealed problem of leaking out, and the production environment is effectively improved.
Claims (3)
1. The utility model provides a novel combined type air door shaft seal device, its constitution includes: the air door body, characterized by: the air door internal portion install a set of packing ring, labyrinth seal ring in proper order, air door body left side install gland, gland right-hand member face with the laminating of packing ring, gland pass through the bolt with the air door body coupling, the bolt on the cover have a pressure spring and install between bolt and gland, air door body right-hand member face and the laminating of the sealed wind-break ring of door spindle to through welded fastening, the air door spindle passes in proper order gland, a set of packing ring the labyrinth seal ring the air door body the sealed wind-break ring of door spindle.
2. The novel composite damper door shaft seal assembly of claim 1, further comprising: the right end of the labyrinth seal ring is attached to the inner end face of the air door body, the left end of the labyrinth seal ring is attached to the packing seal ring, and the outer diameter of the right end of the packing gland is smaller than the outer diameter of the packing seal ring.
3. The novel composite damper door shaft seal assembly of claim 1, further comprising: the labyrinth seal ring is made of metal materials, and the filler seal rings are made of graphite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020422533.XU CN211951650U (en) | 2020-03-29 | 2020-03-29 | Novel combined type air door shaft sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020422533.XU CN211951650U (en) | 2020-03-29 | 2020-03-29 | Novel combined type air door shaft sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211951650U true CN211951650U (en) | 2020-11-17 |
Family
ID=73186704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020422533.XU Expired - Fee Related CN211951650U (en) | 2020-03-29 | 2020-03-29 | Novel combined type air door shaft sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211951650U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4279769A1 (en) * | 2022-05-16 | 2023-11-22 | Martin GmbH für Umwelt- und Energietechnik | Labyrinth seal |
-
2020
- 2020-03-29 CN CN202020422533.XU patent/CN211951650U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4279769A1 (en) * | 2022-05-16 | 2023-11-22 | Martin GmbH für Umwelt- und Energietechnik | Labyrinth seal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102410383B (en) | Internal sealing specific pressure-regulable fixed-ball ball valve | |
| CN211951650U (en) | Novel combined type air door shaft sealing device | |
| CN201902557U (en) | Air seal device of fan principle axis | |
| CN105042078A (en) | High-temperature-resistant and high-pressure-resistant shaft sealing device | |
| CN205101559U (en) | Sealing device is used to high temperature resistant high pressure resistant axle | |
| CN202925043U (en) | Composite sealing device for mechanical stock rod winding drum box body for blast furnace | |
| CN209622048U (en) | Coal pulverizer lower frame sealing device | |
| CN202251971U (en) | Sealing device for door shaft of air door of air duct of thermal power plant | |
| CN214146617U (en) | Novel maintenance-free air door shaft seal device | |
| CN105650280A (en) | Rotary kiln sealing device and processing system with same | |
| CN201593908U (en) | Bellows sealing structure of revolving drum drier | |
| CN210252501U (en) | Coal pulverizer shutoff door system | |
| CN2457407Y (en) | Intelligent emergency fast cut-off valve | |
| CN204592535U (en) | A kind of door-hinge sealing of damper is optimized structure | |
| CN213222641U (en) | Stone coal slag discharge door of MPS type coal mill | |
| CN216361136U (en) | Dynamic and static base sealing device for coal mill | |
| CN105650298A (en) | Dome valve | |
| CN217977702U (en) | Door shaft sealing leakage-proof device | |
| CN201348060Y (en) | Pulverized coal injection ball valve | |
| CN202252317U (en) | Air duct door spindle sealing device | |
| CN100467618C (en) | Blast furnace compaction type vertical stock rod drum shaft composite sealing device | |
| CN219388606U (en) | Door shaft seal of hot primary air regulating door of coal mill | |
| CN220582435U (en) | Wall-penetrating sealing structure for small garbage incinerator | |
| CN212864809U (en) | Angle-adjusting hydraulic cylinder protective cover of blast furnace tapping machine | |
| CN210034444U (en) | Novel flue gas valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201117 |