CN102364117A - Combined shaft end seal - Google Patents
Combined shaft end seal Download PDFInfo
- Publication number
- CN102364117A CN102364117A CN2010105884481A CN201010588448A CN102364117A CN 102364117 A CN102364117 A CN 102364117A CN 2010105884481 A CN2010105884481 A CN 2010105884481A CN 201010588448 A CN201010588448 A CN 201010588448A CN 102364117 A CN102364117 A CN 102364117A
- Authority
- CN
- China
- Prior art keywords
- sealing
- axle head
- carbocyclic ring
- seal
- shaft end
- 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.)
- Pending
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention discloses a combined shaft end seal which is positioned at a shaft end of a main shaft between a fan enclosure and the root of a blade wheel. The combined shaft end seal comprises a labyrinth seal, a floating carbon ring seal and a nitrogen sweeping device, wherein the labyrinth seal is arranged on the root of the blade wheel and attached to the shaft end; the floating carbon ring seal is positioned on one side of the enclosure and attached to the shaft end; and the nitrogen sweeping device is arranged at the shaft end between the labyrinth seal and the floating carbon ring seal. By the combined shaft end seal, an aim of zero leakage of sealing gas at the shaft end of the fan is fulfilled; furthermore, due to a requirement of a cavity body pressurization experiment, the problem that the conventional coal gas air blower is easy to leak gas and even explode can be solved.
Description
Technical field
The present invention relates to a kind of shaft end seal, be specifically related to a kind of combined type axle head sealing.
Background technique
The general import of gas-blowing engine is a negative pressure; What traditional gas-blowing engine sealing was adopted is single labyrinth seal or carbocyclic ring sealing; Be easy to occur axle head gas leakage problem; Air be through can blasting in the shaft end seal entering machine He behind the coal gas volume mixing certain proportion, thereby entail dangers to workman's life safety not only also can cause phenomenons such as atmospheric pollution.For being strictly on guard against the phenomenon of gas leakage, the present invention designs a kind of combined type axle head sealing and reaches blower fan shaft end seal gas zero leakage purpose, and through cavity pressurization experimental requirements.
Summary of the invention
Goal of the invention: the object of the present invention is to provide a kind of combined type axle head sealing, to remedy the fried problem of traditional gas-blowing engine leakiness gas explosion.
Technological scheme: for achieving the above object; The invention provides a kind of combined type axle head sealing; Labyrinth seal, the sealing of floating type carbocyclic ring and nitrogen purging device are drawn together in main-axis end position between fan casing and impeller root, said combined type axle head sealed packet, and said labyrinth seal is arranged on the impeller root position and axle head is fitted; Said floating type carbocyclic ring sealing is positioned at casing one side and fits with axle head, and the axle head between labyrinth seal and the sealing of floating type carbocyclic ring is provided with nitrogen purging device.
The material of said labyrinth seal is the broach matrix of aluminium alloy plate, is contained on the static seal, and leakage rate is generally less than 0.5% of blower fan mass flow rate.
The material of said labyrinth seal is the broach matrix of aluminium alloy plate, is whole machine shaping on the seal of cast aluminium at material directly, and leakage rate is generally less than 0.5% of blower fan mass flow rate.
Said floating type carbocyclic ring sealing by be arranged on more than three groups or three groups sealing close in relocatable carbocyclic ring form; Every group of carbocyclic ring by a coil spring banding graphite or polytetrafluoroethyl-ne process can three lobe ring cylindricals of selflubricating on; Carbocyclic ring limits its rotation with the side that contacts that sealing is closed by the rotation inhibiting pin, and the endoporus and the main shaft of carbocyclic ring have radial clearance.
Beneficial effect: combined type axle head sealing of the present invention can effectively prevent gas leakage through sealer with assembled; Thereby labyrinth seal is quickened and slows down to reduce leakage rate to consume pressure in seal clearance place and Seal cage internal clearance through forcing fluid, and leakage rate is generally less than 0.5% of blower fan mass flow rate; Floating type carbocyclic ring sealing is through under the differential pressure action, and a side of carbocyclic ring is attached to and seals on the side of closing, and carbocyclic ring was also slightly unsteady to some extent under spring action when running shaft was slightly beated, and air-flow then receives throttling and reduces leakage in the radial clearance of carbocyclic ring endoporus and axle; Chamber between the carbocyclic ring group reaches zero leakage through being preset with the import and export of nitrogen that adds high pressure through labyrinth seal body and lip-type packing, O-ring seals.
Description of drawings
Fig. 1 is a scheme of installation of the present invention;
Fig. 2 is a structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further:
Like combined type axle head sealing shown in the drawings; Main shaft 3 axle heads 4 positions between fan casing 1 and impeller 2 roots; Said combined type axle head sealed packet is drawn together labyrinth seal 5, the sealing 6 of floating type carbocyclic ring and nitrogen and is purged 7 devices; Said labyrinth seal 5 is arranged on impeller 2 root positions and axle head 4 is fitted, and said floating type carbocyclic ring sealing 6 is positioned at casing 1 one sides and fits with axle head 4, and the axle head 4 between labyrinth seal 5 and the floating type carbocyclic ring sealing 6 is provided with nitrogen and purges 7 devices.
The material of said labyrinth seal 5 is the broach matrix of aluminium alloy plate; Be contained on the static seal or be whole machine shaping on the seal of cast aluminium directly at material; Leakage rate is generally less than 0.5% of blower fan mass flow rate; Under the not blocked prerequisite of cleaning Seal cage and seal groove, thus labyrinth seal 5 through forcing fluid and in seal clearance place and Seal cage internal clearance, quicken and slow down with consumption pressure minimizing leakage rate, leakage rate is generally less than 0.5% of blower fan mass flow rate; Said floating type carbocyclic ring sealing 6 is closed in 8 relocatable carbocyclic ring and is formed by being arranged on sealing more than three groups or three groups; Chamber between the carbocyclic ring group reaches zero leakage through being preset with the import and export of nitrogen that adds high pressure through labyrinth seal body and lip-type packing, O-ring seals.
Claims (4)
1. combined type axle head sealing; Be positioned at main shaft (3) axle head (4) position between fan casing (1) and impeller (2) root; It is characterized in that: said combined type axle head sealed packet is drawn together labyrinth seal (5), floating type carbocyclic ring sealing (6) and nitrogen and is purged (7) device; Said labyrinth seal (5) is arranged on impeller (2) root position and axle head (4) is fitted; Said floating type carbocyclic ring sealing (6) is positioned at casing (1) one side and fits with axle head (4), and the axle head (4) between labyrinth seal (5) and the floating type carbocyclic ring sealing (6) is provided with nitrogen and purges (7) device.
2. combined type axle head sealing according to claim 1, it is characterized in that: the material of said labyrinth seal (5) is the broach matrix of aluminium alloy plate, is contained on the static seal.
3. combined type axle head according to claim 1 sealing, it is characterized in that: the material of said labyrinth seal (5) is the broach matrix of aluminium alloy plate, is whole machine shaping on the seal of cast aluminium at material directly.
4. combined type axle head sealing according to claim 1; It is characterized in that: said floating type carbocyclic ring sealing (6) is closed in (8) relocatable carbocyclic ring and is formed by being arranged on sealing more than three groups or three groups; Every group of carbocyclic ring by a coil spring banding graphite or polytetrafluoroethyl-ne process can three lobe ring cylindricals of selflubricating on; Carbocyclic ring closes the side that contacts of (8) and limits its rotation by the rotation inhibiting pin with sealing, the endoporus of carbocyclic ring and main shaft (3) have radial clearance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105884481A CN102364117A (en) | 2010-12-15 | 2010-12-15 | Combined shaft end seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105884481A CN102364117A (en) | 2010-12-15 | 2010-12-15 | Combined shaft end seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102364117A true CN102364117A (en) | 2012-02-29 |
Family
ID=45690701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105884481A Pending CN102364117A (en) | 2010-12-15 | 2010-12-15 | Combined shaft end seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102364117A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828988A (en) * | 2012-09-26 | 2012-12-19 | 上海中船三井造船柴油机有限公司 | Labyrinth sealing device of ship auxiliary blower |
| CN104246131A (en) * | 2012-03-02 | 2014-12-24 | 多佛泵解决方案集团（欧洲）有限公司 | Sealing arrangement, a conveying device having a sealing arrangement and a method for operating the sealing arrangement |
| CN104343473A (en) * | 2014-09-02 | 2015-02-11 | 华中科技大学 | Shaft end seal device for organic working medium radial-inward-flow turbine |
| CN104481620A (en) * | 2014-11-27 | 2015-04-01 | 华中科技大学 | Organic working medium radial inflow turbine power generation device |
| CN104895624A (en) * | 2015-05-07 | 2015-09-09 | 中国航空工业集团公司沈阳发动机设计研究所 | Comb tooth sealing structure |
| CN105952681A (en) * | 2016-04-29 | 2016-09-21 | 沈阳透平机械股份有限公司 | Balance gas cavity type shaft end sealing mechanism and sealing gas adjustment device of compressor |
| CN110454432A (en) * | 2019-09-20 | 2019-11-15 | 重庆通用工业(集团)有限责任公司 | Combined type shaft end seal |
| CN111022651A (en) * | 2019-12-02 | 2020-04-17 | 东方电气集团东方汽轮机有限公司 | Shaft end sealing structure and method |
| CN115030906A (en) * | 2022-06-28 | 2022-09-09 | 江苏金通灵鼓风机有限公司 | Non-oriented silicon steel annealing furnace fan |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB861557A (en) * | 1958-10-01 | 1961-02-22 | Sulzer Ag | Sealing means for shafts |
| US5046718A (en) * | 1989-12-28 | 1991-09-10 | The Dow Chemical Company | Floating ring labyrinth-type dynamic shaft seal and process for using same |
| CN101092961A (en) * | 2007-07-03 | 2007-12-26 | 常州市风机制造有限公司 | Roots blower |
| CN101532502A (en) * | 2009-04-27 | 2009-09-16 | 江苏金通灵风机股份有限公司 | Post-treatment waste gas recycling high-temperature blower |
| CN101713461A (en) * | 2009-12-22 | 2010-05-26 | 中国船舶重工集团公司第七一一研究所 | Dry gas sealing device for technical screw compressor and application system thereof |
| DE102009012038A1 (en) * | 2009-03-10 | 2010-09-16 | Siemens Aktiengesellschaft | Shaft seal for a turbomachine |
| CN201593608U (en) * | 2010-02-03 | 2010-09-29 | 洛阳芳华机械制造有限公司 | Two-stage seal floating shaft seal of transmission shaft of coal pulverizer |
| CN202012501U (en) * | 2010-12-15 | 2011-10-19 | 南通大通宝富风机有限公司 | Combined type shaft end seal |
| CN102808947A (en) * | 2011-06-02 | 2012-12-05 | 南通三鑫碳素石墨设备有限公司 | Graphite shaft end sealing element |
-
2010
- 2010-12-15 CN CN2010105884481A patent/CN102364117A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB861557A (en) * | 1958-10-01 | 1961-02-22 | Sulzer Ag | Sealing means for shafts |
| US5046718A (en) * | 1989-12-28 | 1991-09-10 | The Dow Chemical Company | Floating ring labyrinth-type dynamic shaft seal and process for using same |
| CN101092961A (en) * | 2007-07-03 | 2007-12-26 | 常州市风机制造有限公司 | Roots blower |
| DE102009012038A1 (en) * | 2009-03-10 | 2010-09-16 | Siemens Aktiengesellschaft | Shaft seal for a turbomachine |
| CN101532502A (en) * | 2009-04-27 | 2009-09-16 | 江苏金通灵风机股份有限公司 | Post-treatment waste gas recycling high-temperature blower |
| CN101713461A (en) * | 2009-12-22 | 2010-05-26 | 中国船舶重工集团公司第七一一研究所 | Dry gas sealing device for technical screw compressor and application system thereof |
| CN201593608U (en) * | 2010-02-03 | 2010-09-29 | 洛阳芳华机械制造有限公司 | Two-stage seal floating shaft seal of transmission shaft of coal pulverizer |
| CN202012501U (en) * | 2010-12-15 | 2011-10-19 | 南通大通宝富风机有限公司 | Combined type shaft end seal |
| CN102808947A (en) * | 2011-06-02 | 2012-12-05 | 南通三鑫碳素石墨设备有限公司 | Graphite shaft end sealing element |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104246131B (en) * | 2012-03-02 | 2018-07-10 | 多佛泵解决方案集团（欧洲）有限公司 | The operating method of sealing structure, the conveying device with sealing structure and sealing structure |
| CN104246131A (en) * | 2012-03-02 | 2014-12-24 | 多佛泵解决方案集团（欧洲）有限公司 | Sealing arrangement, a conveying device having a sealing arrangement and a method for operating the sealing arrangement |
| CN102828988B (en) * | 2012-09-26 | 2014-10-08 | 上海中船三井造船柴油机有限公司 | labyrinth sealing device of ship auxiliary blower |
| CN102828988A (en) * | 2012-09-26 | 2012-12-19 | 上海中船三井造船柴油机有限公司 | Labyrinth sealing device of ship auxiliary blower |
| CN104343473A (en) * | 2014-09-02 | 2015-02-11 | 华中科技大学 | Shaft end seal device for organic working medium radial-inward-flow turbine |
| CN104343473B (en) * | 2014-09-02 | 2015-09-09 | 华中科技大学 | A kind of shaft end seal device for organic working medium radial-inward-flow turbine |
| CN104481620B (en) * | 2014-11-27 | 2016-08-31 | 华中科技大学 | A kind of organic working medium radial-inward-flow turbine TRT |
| CN104481620A (en) * | 2014-11-27 | 2015-04-01 | 华中科技大学 | Organic working medium radial inflow turbine power generation device |
| CN104895624A (en) * | 2015-05-07 | 2015-09-09 | 中国航空工业集团公司沈阳发动机设计研究所 | Comb tooth sealing structure |
| CN105952681A (en) * | 2016-04-29 | 2016-09-21 | 沈阳透平机械股份有限公司 | Balance gas cavity type shaft end sealing mechanism and sealing gas adjustment device of compressor |
| CN110454432A (en) * | 2019-09-20 | 2019-11-15 | 重庆通用工业(集团)有限责任公司 | Combined type shaft end seal |
| CN111022651A (en) * | 2019-12-02 | 2020-04-17 | 东方电气集团东方汽轮机有限公司 | Shaft end sealing structure and method |
| CN115030906A (en) * | 2022-06-28 | 2022-09-09 | 江苏金通灵鼓风机有限公司 | Non-oriented silicon steel annealing furnace fan |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102364117A (en) | Combined shaft end seal | |
| CN202789590U (en) | Novel centrifugal blower applicable to delivering special gases | |
| CN202012501U (en) | Combined type shaft end seal | |
| CN205117803U (en) | Monopole coal gas centrifugal blower prevents leaking wheel hub | |
| CN208397310U (en) | A kind of air blower carbon ring sealing structure | |
| CN205117725U (en) | Can clear up screw vacuum pump of dust | |
| CN205190312U (en) | A atmoseal device for centrifugal blower | |
| CN204942545U (en) | A kind of sealing carbocyclic ring of improvement | |
| CN201858192U (en) | Fan main body of centrifugal fan for producing blue carbon | |
| CN202418590U (en) | Oil deflector ring for bearing box of steam turbine | |
| CN205639812U (en) | Antidetonation pipeline discharge valve | |
| CN204140391U (en) | With the roots blower of combined sealed device | |
| CN202500774U (en) | Composite sealing device for Roots blower end cover | |
| CN201802970U (en) | Guide regulating valve of high-pressure multistage depressurization sleeve | |
| CN204458250U (en) | Fully closed horizontal No leakage body | |
| CN209370085U (en) | Centrifugal cryogenic liquid pump | |
| CN211259694U (en) | Medium zero-leakage gate valve sealed by air plug | |
| CN2913691Y (en) | Coal gas centrifugal blower | |
| CN203655661U (en) | Direct connection water ring vacuum pump | |
| CN203906375U (en) | High-pressure leakage-preventing air blower | |
| CN203548315U (en) | Main shaft dry-type operation magnetic pump | |
| CN102536856A (en) | Pressurized coal gas blower | |
| CN209115719U (en) | Ultralow temperature upper-mounting type ball valve | |
| CN110805710A (en) | Medium zero-leakage gate valve sealed by air plug | |
| CN202418701U (en) | Top-mounted ball valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120229 |