CN104074795B - A kind of high speed shaft seal structure - Google Patents
A kind of high speed shaft seal structure Download PDFInfo
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- CN104074795B CN104074795B CN201410332495.8A CN201410332495A CN104074795B CN 104074795 B CN104074795 B CN 104074795B CN 201410332495 A CN201410332495 A CN 201410332495A CN 104074795 B CN104074795 B CN 104074795B
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- Structures Of Non-Positive Displacement Pumps (AREA)
- Sealing Of Bearings (AREA)
Abstract
The present invention relates to a kind of high speed shaft seal structure, including gear-box, be provided with axle and bearing in gear-box, bearings axle, shaft end is connected to impeller；The side of bearing is provided with oil seal circle, and oil seal circle is bolted on gear-box, forms oil back chamber between oil seal circle and gear-box, and the lower end of oil back chamber is provided with spill port；Gear-box is provided with shrouding near impeller side, shrouding is fixed by screws on gear-box, groove it is provided with in shrouding, labyrinth air seal is arranged in shrouding groove, labyrinth air seal radial direction extension spring is fixed, shrouding, between oil seal circle and gear-box formed discharge chamber, gear-box is provided with passage, axle is respectively arranged with and gets rid of compression ring and disc.Present configuration is simple, reasonable in design, protects sealing ring without damage, in the course of the work oil, edema caused by disorder of QI is from completely, without being adhered to cause corrosion on other inner bodies so that the longer service life of high-speed centrifugal fan.
Description
Technical field
The present invention relates to a kind of high speed shaft seal structure, belong to mechanical equipment technical field.
Background technology
Conventionally, as the high speed rotor center of gravity of high-speed centrifugal fan is positioned at outside two bearings fulcrum, when static, high speed rotor is affected by gravity, first Contact Seal ring.Blower fan is in the moment started and shut down; high speed shaft and sealing ring occur to rub consumingly; owing to sealing ring is generally made with aluminium alloy; therefore sealing ring is easily damaged; and blower fan is operationally; the rotating speed of superelevation can make the lubricating oil on the compression air in spiral case and axle and bearing mix and be attached in blower fan, this considerably reduces the service life of blower fan, expends more energy.
Summary of the invention
The invention aims to solve shortcoming of the prior art, it is provided that a kind of simple in construction, easy to use, not only sealing ring can be overcome easily damaged but also be capable of oil and high speed shaft seal structure that gas efficiently separates.
The present invention adopts the following technical scheme that a kind of high speed shaft seal structure, including gear-box, axle and bearing are installed in described gear-box, bearings axle, described shaft end is connected to impeller, the side of described bearing is provided with oil seal circle, oil seal circle is bolted on gear-box, oil back chamber is formed between described oil seal circle and gear-box, the lower end of oil back chamber is provided with spill port, the gear-box of described close impeller end side is provided with shrouding, described shrouding is fixed by screws on gear-box, a groove it is provided with in shrouding, described labyrinth air seal is arranged in the groove of shrouding, described labyrinth air seal radial direction extension spring is fixed, described shrouding, discharge chamber is formed between oil seal circle and gear-box, described gear-box is provided with passage, described axle is respectively arranged with and gets rid of compression ring and disc.
Further, described bearing is tilting-pad bearing.
Further, the inner chamber of described labyrinth air seal is provided with sealing comb, and described sealing comb has 3-5.
Further, it is provided with wavy spring between described shrouding groove side and labyrinth air seal.
Further, described labyrinth air seal adopts aluminum to make.
Further, the inner side of described shrouding is stepped.
Further, the inner chamber of described oil seal circle is provided with some sealing comb.
Present configuration is simple, reasonable in design, protects sealing ring without damage, in the course of the work oil, edema caused by disorder of QI is from completely, without being adhered to cause corrosion on other inner bodies so that the longer service life of high-speed centrifugal fan.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Accompanying drawing labelling: axle 1, get rid of compression ring 1-1, disc 1-2, bearing 2, gear-box 3, oil seal circle 4, labyrinth air seal 5, extension spring 6, wavy spring 7, shrouding 8, impeller 9, discharge chamber 10, passage 11, oil back chamber 12, spill port 13.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1: the present invention includes axle 1, gets rid of compression ring 1-1, disc 1-2, bearing 2, gear-box 3, oil seal circle 4, labyrinth air seal 5, extension spring 6, wavy spring 7, shrouding 8, impeller 9, discharge chamber 10, passage 11, oil back chamber 12, spill port 13.
Being provided with axle 1 and bearing 2 in gear-box 3, bearing 2 supports axle 1；Described bearing 2 is tilting-pad bearing, axle 1 is respectively arranged with and gets rid of compression ring 1-1 and disc 1-2；Described axle 1 end is connected to impeller 9；The side of described bearing 2 is provided with oil seal circle 4, and oil seal circle 4 is bolted on gear 3, and the inner chamber of oil seal circle 4 is provided with some sealing comb；Forming oil back chamber 12 between described oil seal circle 4 and gear-box 3, the lower end of oil back chamber 12 is provided with spill port 13；Have a groove in shrouding 8, with screw, described shrouding 8 is fixed on the gear-box 3 of impeller 9 end side；The inner side of shrouding 8 is stepped, and labyrinth air seal 5 is arranged in shrouding 8 groove, radially fixes with extension spring 6, it is simple to the dismounting of labyrinth air seal 5；The inner chamber of labyrinth air seal 5 is provided with sealing comb, seal comb and have 5, labyrinth air seal 5 adopts aluminum to make, and is provided with wavy spring 7 between described shrouding 8 groove side and labyrinth air seal 5, and the setting of wavy spring 7 makes labyrinth air seal 5 against shrouding 8 and prevent compression air from thus leaking；Forming discharge chamber 10 between described shrouding 8, oil seal circle 4 and gear-box 3, be provided with passage 11 on gear-box 3, the setting of passage 11 makes discharge chamber 10 connect with ambient atmosphere.
When static, axle 1 is affected by gravity, first contact labyrinth air seal 5, because labyrinth air seal 5 is not fastened on shrouding 8 so that labyrinth air seal 5 moves down along with axle 1, it is to avoid labyrinth air seal 5 becomes the supporting-point of axle 1, and causes damage.
Moment at fan starting; axle 1 be omitted off-center line position start from turn, its axis of rotation formed cone precession, the axis of labyrinth air seal 5 around centrage rotate; prevent labyrinth air seal 5 and axle 1 that violent friction occurs, protect labyrinth air seal 5 and be not damaged by.
Moment at fan parking; axle 1 slows down operating to steadily shutting down; position of center line during from work starts slightly off-centre line position; its axis of rotation forms cone precession; the axis of labyrinth air seal 5 rotates around centrage; prevent labyrinth air seal 5 and axle 1 that violent friction occurs, protect labyrinth air seal 5 and be not damaged by.
When blower fan normal operation, compression air in spiral case can from the clearance leakage of impeller 9 and gear-box 3 out, the air-flow that labyrinth air seal 5 passes through significantly blood pressure lowering, thus controlling the gas leakage rate by this gap, the air leaked out is got rid of to discharge chamber 10 and leads to ambient atmosphere by the compression ring 1-1 that gets rid of on axle 1 through passage 11 subsequently；Parts of lubricating oil along axle 1 and bearing 2 clearance leakage out, the oil significantly blood pressure lowering that the sealing comb of oil seal circle 4 can flow through, thus controlling the leakage rate of oil, the oil leaked out is got rid of to oil back chamber 12 by the disc 1-2 on axle 1 and is flowed in gear-box 3 through spill port 13, avoid lubricating oil and enter in discharge chamber 10, bring pollution, be effectively realized oil, edema caused by disorder of QI from, and avoid oil, gas mixing is attached on centrifugal blower other parts internal the corrosion caused, and extends the service life of centrifugal blower.
Claims (7)
1. a high speed shaft seal structure, it is characterized in that: include gear-box (3), axle (1) and bearing (2) are installed in described gear-box (3), bearing (2) supports axle (1), described axle (1) end is connected to impeller (9), the side of described bearing (2) is provided with oil seal circle (4), oil seal circle (4) is bolted on gear-box (3), oil back chamber (12) is formed between described oil seal circle (4) and gear-box (3), the lower end of described oil back chamber (12) is provided with spill port (13), described gear-box (3) is provided with shrouding (8) near impeller side, described shrouding (8) is fixed by screws on gear-box (3), described shrouding is provided with groove in (8), labyrinth air seal (5) is arranged in shrouding (8) groove, described labyrinth air seal (5) radial direction extension spring (6) is fixed, described shrouding (8), discharge chamber (10) is formed between oil seal circle (4) and gear-box (3), described gear-box (3) is provided with passage (11), described axle (1) is respectively arranged with and gets rid of compression ring (1-1) and disc (1-2).
2. a kind of high speed shaft seal structure as claimed in claim 1, it is characterised in that: described bearing (2) is tilting-pad bearing.
3. a kind of high speed shaft seal structure as claimed in claim 1, it is characterised in that: the inner chamber of described labyrinth air seal (5) is provided with sealing comb, and the number of described sealing comb is 3-5.
4. a kind of high speed shaft seal structure as claimed in claim 1, it is characterised in that: it is provided with wavy spring (7) between described shrouding (8) groove side and labyrinth air seal (5).
5. a kind of high speed shaft seal structure as claimed in claim 1, it is characterised in that: described labyrinth air seal (5) adopts aluminum to make.
6. a kind of high speed shaft seal structure as claimed in claim 1, it is characterised in that: the inner side of described shrouding (8) is stepped.
7. a kind of high speed shaft seal structure as claimed in claim 1, it is characterised in that: the inner chamber of described oil seal circle (4) is provided with some sealing comb.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410332495.8A CN104074795B (en) | 2014-07-11 | 2014-07-11 | A kind of high speed shaft seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410332495.8A CN104074795B (en) | 2014-07-11 | 2014-07-11 | A kind of high speed shaft seal structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104074795A CN104074795A (en) | 2014-10-01 |
| CN104074795B true CN104074795B (en) | 2016-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410332495.8A Active CN104074795B (en) | 2014-07-11 | 2014-07-11 | A kind of high speed shaft seal structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN104074795B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331906A (en) * | 2018-03-06 | 2018-07-27 | 杭州前进齿轮箱集团股份有限公司 | A kind of high speed shaft sealing hydrocarbons structure of vertical and high-speed case |
| CN111005893A (en) * | 2019-12-27 | 2020-04-14 | 湖南泛航智能装备有限公司 | High-speed centrifugal fan labyrinth seal structure |
| CN111637088A (en) * | 2020-07-10 | 2020-09-08 | 江苏杰尔科技股份有限公司 | Labyrinth type oil seal structure of high-speed centrifugal fan |
| CN113700833B (en) * | 2021-08-25 | 2023-05-02 | 湖南泛航智能装备有限公司 | Structure and method for balancing compressor gear box cavity pressure |
| CN114198485B (en) * | 2021-12-09 | 2024-07-09 | 中国船舶重工集团公司第七0三研究所 | Centrifugal auxiliary sealing high-speed shafting |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004197848A (en) * | 2002-12-19 | 2004-07-15 | Hitachi Industries Co Ltd | Shaft seal device and turbo compressor |
| CN102094845A (en) * | 2011-03-07 | 2011-06-15 | 江苏金通灵风机股份有限公司 | Shaft seal device of air compressor |
| JP2013044275A (en) * | 2011-08-24 | 2013-03-04 | Ihi Corp | Compressor sealing device |
| CN103452897A (en) * | 2013-09-22 | 2013-12-18 | 无锡杰尔压缩机有限公司 | Modified air seal structure |
| CN204299937U (en) * | 2014-07-11 | 2015-04-29 | 无锡杰尔压缩机有限公司 | A kind of high speed shaft seal structure |
-
2014
- 2014-07-11 CN CN201410332495.8A patent/CN104074795B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004197848A (en) * | 2002-12-19 | 2004-07-15 | Hitachi Industries Co Ltd | Shaft seal device and turbo compressor |
| CN102094845A (en) * | 2011-03-07 | 2011-06-15 | 江苏金通灵风机股份有限公司 | Shaft seal device of air compressor |
| JP2013044275A (en) * | 2011-08-24 | 2013-03-04 | Ihi Corp | Compressor sealing device |
| CN103452897A (en) * | 2013-09-22 | 2013-12-18 | 无锡杰尔压缩机有限公司 | Modified air seal structure |
| CN204299937U (en) * | 2014-07-11 | 2015-04-29 | 无锡杰尔压缩机有限公司 | A kind of high speed shaft seal structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104074795A (en) | 2014-10-01 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 214106 No. 38, Qian Lian Road, Xishan Economic Development Zone, Xishan District, Jiangsu, Wuxi Applicant after: JIANGSU GL-TURBO CORPORATION Address before: 214101 Jiangsu Province, Wuxi city Xishan District of Xishan Economic Development Zone in three Furong Road No. 99 building six room 507 zuiun Applicant before: Wuxi Jieer Compressor Co., Ltd. |
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| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: High-speed shaft seal structure Effective date of registration: 20180327 Granted publication date: 20160629 Pledgee: Agricultural Bank of China, Limited by Share Ltd, Wuxi, Xishan branch Pledgor: JIANGSU GL-TURBO CORPORATION Registration number: 2018990000233 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20201014 Granted publication date: 20160629 Pledgee: Agricultural Bank of China Limited by Share Ltd. Wuxi Xishan branch Pledgor: GL-TURBO LLC Registration number: 2018990000233 |