CN102094845A - Shaft seal device of air compressor - Google Patents
Shaft seal device of air compressor Download PDFInfo
- Publication number
- CN102094845A CN102094845A CN201110053237.2A CN201110053237A CN102094845A CN 102094845 A CN102094845 A CN 102094845A CN 201110053237 A CN201110053237 A CN 201110053237A CN 102094845 A CN102094845 A CN 102094845A
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- oil
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- seal
- seal device
- air compressor
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Abstract
The invention provides a shaft seal device of an air compressor. A rotary shaft is connected with a carbon ring type gas seal device and an oil slinger oil seal device, wherein the oil slinger oil seal device comprises two shaft shoulder oil slingers, an oil return passage and an oil seal shell; the oil return passage is arranged between the two oil slingers; the shaft diameters of the two oil slingers are greater than the shaft diameter of the oil return passage; the oil seal shell comprises a vortex cavity and an oil return hole; the vortex cavity of the oil seal shell surrounds an oil slinger; the oil return hole is arranged at the lower part of the oil seal shell; the oil return hole is communicated with the vortex cavity; an enclosure between the carbon ring type gas seal device and the oil slinger oil seal device is provided with a through hole which is communicated with the atmosphere; and the two sides of the inlet of the vortex cavity are of a barb structure and are distributed symmetrically, which is favorable for collecting the leaked oil on the oil slingers. According to the invention, the problems that the common gas seal has a large leakage rate, the common oil seal has a long axial distance, media are easy to be polluted due to the mixing of gas and oil when the common gland seal and the common oil seal are combined, and the shaft seal device of the air compressor is especially suitable for being matched with a high-speed gear type centrifugal air compressor for use.
Description
Technical field
The present invention relates to the sealing technique of air compression arbor, be meant the gland seal device of air compressor especially with carbon-ring type sealing gland and disc oil sealing.
Background technique
For air compressor, especially gear type centrifugal air compressor must adopt various forms of sealing glands to prevent or to limit the high-pressure air air that depollutes in along the oil leak of compressor rotating shaft end leakage in gear-box and in the gear-box to pressurized air.At present, both at home and abroad generally the sealing gland of air compressor is adopted carbocyclic ring sealing or labyrinth seal, along with high pressure, at a high speed, the development of high-efficient compressor; The conventional carbocyclic ring or the flow-induced vibration of labyrinth air seal cavity easily cause the self-excited vibration of machinery, influence the stable operation of unit, and the gas that leaks enters gear-box, cause that the gear-box internal pressure is too high, cause oil leak, the lubricant oil of leakage easily enters sealing gland, pollutes working medium; The conventional labyrinth oil seal number of teeth is more, causes axial distance excessive, the cost of production height, and unit vibration increases, decrease in efficiency.
The 37th volume the 3rd interim publication " improvement of the milling train gearbox shaft seal structure " literary composition that " modern metallurgical " published in June, 2009, the disc sealing of mentioning has only disc one, belongs to the power type sealing, suit under high-speed condition, to work, weaken in low-speed conditions lower seal performance.
Summary of the invention
Goal of the invention: overcome the bad defective of conventional air compressor shaft gland, provide that a kind of working medium pollutes less, the equal gland seal device of good air compressor of oil sealing sealing gland.
Technological scheme: the gland seal device of air compressor of the present invention, be connected with carbon-ring type air seal set and disc oil-sealing arrangement in the rotating shaft, the periphery of gland seal device is a casing.Described disc oil-sealing arrangement contains twice shaft shoulder formula disc, a drainback passage, an oil seal housing; Twice disc and rotating shaft are an integral body, and drainback passage is between the twice disc, and the diameter of axle at twice disc place is all greater than the diameter of axle of drainback passage; Contain an eddy current cavity and a spill port on the oil seal housing, the eddy current cavity of oil seal housing surrounds disc one, and an end of oil seal housing has the oil return gap between this end and the rotating shaft in drainback passage, and the other end and the rotating shaft sealing of oil seal housing are good; Spill port is in the bottom of oil seal housing, and spill port is communicated with the eddy current cavity; Casing between carbon-ring type air seal set and the disc oil-sealing arrangement is provided with the vent that is communicated with atmosphere.
Described twice disc spacing can be 10mm～30mm, and the twice disc place diameter of axle can differ 5mm～20mm.
The inlet both sides of described eddy current cavity become barb type, are symmetrically distributed, and are beneficial to collect the oil that leaks on the disc.
Described carbon-ring type air seal structure can contain twice carbocyclic ring seal ring, three road broach and two carbocyclic ring seal ring cross arrangement, and tightness is better.
When in the described rotating shaft thrust bearing being installed, the thrust bearing location is located as disc position, first road, and the lateral vertical that this road disc contacts with oil seal housing is in the axis of rotating shaft, and the another side radially becomes 10 °～25 ° with rotating shaft; The bi-side of the second road disc are symmetrically distributed, and become 20 °～35 ° between the bi-side.
Beneficial effect: the present invention has following characteristics:
1) the present invention adopts the sealing gland of twice carbocyclic ring seal ring.Characteristics such as carbocyclic ring has good wearability, self lubricity, heat-resisting quantity, assemblage gap is little, good airproof performance.Adopt twice carbocyclic ring seal ring, three road broach cross arrangement, high-pressure gas pressure decays near atmospheric pressure, and the gas of leakage is under the effect of oil sealing, and air-flow changes direction, discharges into the atmosphere fully by vent.
2) oil sealing of the present invention adopts twice disc formula structure, farthest reduced the axial float of lubricant oil, special eddy current cavity design, increased the kinetic energy dissipation degree, can prevent the secondary leakage of oil, drainback passage can make long-pending oil in time get back to gear-box by the spill port of bottom, guaranteed oily recycling, have only oil gas seldom to be discharged in the atmosphere, really accomplish pure, the no greasy dirt of working medium through vent.
3) sealing gland and oil sealing are provided with vent between the two, realize Oil-gas Separation, the minute-pressure state of guaranteeing to discharge the pure no greasy dirt of gas and keeping gear-box.
4) the present invention's sealability when work and inoperative is all good, and the leakage rate that has solved conventional sealing gland appearance is big, and conventional oil sealing axial distance is big, and the problem of oil gas composite pollution medium easily takes place for conventional sealing gland and oil sealing combination.Especially be fit to the supporting use of high gear formula centrifugal air compressor.
Description of drawings
Accompanying drawing is a cross-sectional view of the present invention that is installed in the air compressor
1, impeller; 2, rotating shaft; 3, carbocyclic ring seal ring; 4, broach; 5, vent; 6, oil seal housing; 7, the thrust bearing shaft shoulder; 8, thrust bearing; 9, the second road disc; 10, drainback passage; 11, the first road disc; 12, spill port; 13, barb; 14, eddy current cavity; 15, casing.
Embodiment
The invention will be further described below in conjunction with accompanying drawing:
Select or make following parts for use: rotating shaft 2, have twice shaft shoulder formula disc in the rotating shaft 2, leave drainback passage 10 positions between the twice shaft shoulder formula disc, have the thrust bearing shaft shoulder 7 in the rotating shaft 2 in addition one; Thrust bearing 8; The carbon-ring type air seal set of suitable types includes twice carbocyclic ring seal ring 3, three road broach 4; The oil seal housing 6 that contains eddy current cavity 14 and spill port 12.
Described twice disc spacing 20mm, the twice disc place diameter of axle differs 10mm.The inlet both sides of described eddy current cavity 14 become barb 13 types, are symmetrically distributed.
Shown in accompanying drawing, each component are coupled together, rotating shaft 2 also connects impeller 1, and there is casing 15 periphery.Sealing gland is made up of twice carbocyclic ring seal ring 3 and three road broach 4; Oil sealing is made up of oil seal housing 6, the second road disc 9, drainback passage 10, the first road disc 11, and oil seal housing 6 is made up of eddy current cavity 14, spill port 12 etc.; Casing 15 between sealing gland and the oil sealing is provided with vent 5.The eddy current cavity 14 of oil seal housing 6 surrounds the second road disc 9, and an end of oil seal housing 6 has the oil return gap between this end and the rotating shaft in drainback passage 10, the other end of oil seal housing 6 and rotating shaft 2 good seals; Spill port 12 is in the bottom of oil seal housing 6, and spill port 12 is communicated with eddy current cavity 14; In the described rotating shaft 2 thrust bearing 8 is installed, thrust bearing 8 location are located as the first road disc, 11 positions, and the lateral vertical that this road disc contacts with oil seal housing 6 is in the axis of rotating shaft 2, and the another side radially becomes 15 ° with rotating shaft 2; The bi-side of the second road disc 9 are symmetrically distributed, and become 30 ° between the bi-side.
During rotating shaft 2 work, behind the broach 4 that the pressurized gas that leak from impeller 1 pass through sealing gland successively and the carbocyclic ring seal ring 3, the pressure of gas leakage is near external atmosphere pressure, and under the effect of oil sealing, air-flow changes direction, is discharged in the atmosphere by vent 5.. the lubricant oil major part of leaking from gear-box stops through two discs, sub-fraction enters eddy current cavity 14 under the centrifugal action of disc, after energy dissipation takes place, in time get back to gear-box along drainback passage 10 by the spill port 12 of eddy current cavity 14 bottoms, have only oil and gas leakage seldom to go out, discharge by vent 5.Realize axle envelope good seal, and Oil-gas Separation, the minute-pressure state of guaranteeing to discharge the pure no greasy dirt of gas and keeping gear-box.
Claims (5)
1. the gland seal device of an air compressor, be connected with carbon-ring type air seal set and disc oil-sealing arrangement in the rotating shaft (2), the periphery of gland seal device is casing (15), it is characterized in that: described disc oil-sealing arrangement, contain twice shaft shoulder formula disc, a drainback passage (10), an oil seal housing (6); Twice disc and rotating shaft (2) are an integral body, and drainback passage (10) is between the twice disc, and the diameter of axle at twice disc place is all greater than the diameter of axle of drainback passage (10); Contain an eddy current cavity (14) and a spill port (12) on the oil seal housing (6), the eddy current cavity (14) of oil seal housing (6) surrounds one disc, one end of oil seal housing (6) is in drainback passage (10), this end and rotating shaft have the oil return gap between (2), the other end of oil seal housing (6) and rotating shaft (2) good seal; Spill port (12) is in the bottom of oil seal housing (6), and spill port (12) is communicated with eddy current cavity (14); Casing (15) between carbon-ring type air seal set and the disc oil-sealing arrangement is provided with the vent (5) that is communicated with atmosphere.
2. the gland seal device of air compressor according to claim 1, it is characterized in that: described twice disc spacing 10mm～30mm, the twice disc place diameter of axle differs 5mm～20mm.
3. the gland seal device of air compressor according to claim 1 is characterized in that: inlet both sides one-tenth barb (13) type of described eddy current cavity (14), symmetrical distribution.
4. the gland seal device of air compressor according to claim 1, it is characterized in that: described carbon-ring type air seal structure contains twice carbocyclic ring seal ring (3), three road broach (4), cross arrangement.
5. the gland seal device of air compressor according to claim 1 and 2, it is characterized in that: when thrust bearing (8) is installed in the described rotating shaft (2), place, thrust bearing (8) location is as first road disc (11) position, the lateral vertical that this road disc contacts with oil seal housing (6) is in the axis of rotating shaft (2), and the another side radially becomes 10 °～25 ° with rotating shaft (2); The bi-side of the second road disc (9) are symmetrically distributed, and become 20 °～35 ° between the bi-side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110053237.2A CN102094845B (en) | 2011-03-07 | 2011-03-07 | Shaft seal device of air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110053237.2A CN102094845B (en) | 2011-03-07 | 2011-03-07 | Shaft seal device of air compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102094845A true CN102094845A (en) | 2011-06-15 |
| CN102094845B CN102094845B (en) | 2013-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110053237.2A Active CN102094845B (en) | 2011-03-07 | 2011-03-07 | Shaft seal device of air compressor |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032347A (en) * | 2011-09-28 | 2013-04-10 | 珠海格力电器股份有限公司 | Centrifugal compressor with insulation structure |
| CN103362853A (en) * | 2012-04-02 | 2013-10-23 | 珠海格力电器股份有限公司 | Direct-connection centrifugal compressor and oil-return device thereof |
| CN103452897A (en) * | 2013-09-22 | 2013-12-18 | 无锡杰尔压缩机有限公司 | Modified air seal structure |
| CN103982661A (en) * | 2014-05-30 | 2014-08-13 | 无锡杰尔压缩机有限公司 | Air and oil combined sealing isolator |
| CN104074795A (en) * | 2014-07-11 | 2014-10-01 | 无锡杰尔压缩机有限公司 | High-speed shaft seal structure |
| CN104747490A (en) * | 2015-02-16 | 2015-07-01 | 沈阳鼓风机集团自动控制系统工程有限公司 | Bearing-oil-sealed buffer gas pressure control method |
| CN106762789A (en) * | 2016-12-22 | 2017-05-31 | 中国船舶重工集团公司第七研究所 | A kind of semicircle flange arrangement and boat diesel engine exhaust gas pump |
| CN107869570A (en) * | 2017-11-10 | 2018-04-03 | 南京高精齿轮集团有限公司 | Gear-box shaft end dynamic sealing device |
| CN109404282A (en) * | 2018-12-19 | 2019-03-01 | 苏州通润驱动设备股份有限公司 | A kind of shaft seal structure and its monitoring system of screw rod vapour compression machine |
| CN111022343A (en) * | 2019-12-19 | 2020-04-17 | 烟台菱辰能源有限公司 | Centrifugal air compressor |
| WO2021170088A1 (en) * | 2020-02-28 | 2021-09-02 | 长城汽车股份有限公司 | Air compressor and vehicle |
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| CN2160760Y (en) * | 1993-04-09 | 1994-04-06 | 铁道部大连内燃机车研究所 | New structure of bearing assembly for waste gas turbine pressurizer |
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| CN1888484A (en) * | 2006-07-27 | 2007-01-03 | 东方汽轮机厂 | Structure for preventing water coming into turbine fuel and fuel leakaging |
| CN201096013Y (en) * | 2007-08-30 | 2008-08-06 | 大连经济技术开发区泽通机械有限公司 | Large power natural gas engine turbo-charger oil seal device |
| CN201963591U (en) * | 2011-03-07 | 2011-09-07 | 江苏金通灵流体机械科技股份有限公司 | Shaft seal device of air compressor |
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2011
- 2011-03-07 CN CN201110053237.2A patent/CN102094845B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2160760Y (en) * | 1993-04-09 | 1994-04-06 | 铁道部大连内燃机车研究所 | New structure of bearing assembly for waste gas turbine pressurizer |
| US5967524A (en) * | 1993-05-21 | 1999-10-19 | Jm Clipper Corporation | Hybrid seal device |
| JPH08135458A (en) * | 1994-11-09 | 1996-05-28 | Toyota Motor Corp | Oil seal structure for supercharger |
| WO2002090802A1 (en) * | 2001-05-09 | 2002-11-14 | Mtu Aero Engines Gmbh | Arrangement comprising a slinger associated with a shaft bearing and a gasket associated with a sealing gap |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032347B (en) * | 2011-09-28 | 2015-08-19 | 珠海格力电器股份有限公司 | There is the centrifugal compressor of isolation structure |
| CN103032347A (en) * | 2011-09-28 | 2013-04-10 | 珠海格力电器股份有限公司 | Centrifugal compressor with insulation structure |
| CN103362853A (en) * | 2012-04-02 | 2013-10-23 | 珠海格力电器股份有限公司 | Direct-connection centrifugal compressor and oil-return device thereof |
| CN103452897A (en) * | 2013-09-22 | 2013-12-18 | 无锡杰尔压缩机有限公司 | Modified air seal structure |
| CN103982661A (en) * | 2014-05-30 | 2014-08-13 | 无锡杰尔压缩机有限公司 | Air and oil combined sealing isolator |
| CN103982661B (en) * | 2014-05-30 | 2016-01-27 | 无锡杰尔压缩机有限公司 | Gas, oily combination seal isolator |
| CN104074795B (en) * | 2014-07-11 | 2016-06-29 | 江苏杰尔科技股份有限公司 | A kind of high speed shaft seal structure |
| CN104074795A (en) * | 2014-07-11 | 2014-10-01 | 无锡杰尔压缩机有限公司 | High-speed shaft seal structure |
| CN104747490A (en) * | 2015-02-16 | 2015-07-01 | 沈阳鼓风机集团自动控制系统工程有限公司 | Bearing-oil-sealed buffer gas pressure control method |
| CN106762789A (en) * | 2016-12-22 | 2017-05-31 | 中国船舶重工集团公司第七研究所 | A kind of semicircle flange arrangement and boat diesel engine exhaust gas pump |
| CN107869570A (en) * | 2017-11-10 | 2018-04-03 | 南京高精齿轮集团有限公司 | Gear-box shaft end dynamic sealing device |
| CN109404282A (en) * | 2018-12-19 | 2019-03-01 | 苏州通润驱动设备股份有限公司 | A kind of shaft seal structure and its monitoring system of screw rod vapour compression machine |
| CN109404282B (en) * | 2018-12-19 | 2020-09-04 | 苏州通润驱动设备股份有限公司 | Shaft seal structure of screw steam compressor and monitoring system thereof |
| CN111022343A (en) * | 2019-12-19 | 2020-04-17 | 烟台菱辰能源有限公司 | Centrifugal air compressor |
| CN111022343B (en) * | 2019-12-19 | 2022-07-15 | 烟台东德氢能技术有限公司 | Centrifugal air compressor |
| WO2021170088A1 (en) * | 2020-02-28 | 2021-09-02 | 长城汽车股份有限公司 | Air compressor and vehicle |
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| Publication number | Publication date |
|---|---|
| CN102094845B (en) | 2013-01-16 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 226001, No. 666, Zhong Xiu Dong Lu, Jiangsu, Nantong Patentee after: Jintongling Technology Group Co.,Ltd. Address before: 226001, No. 666, Zhong Xiu Dong Lu, Jiangsu, Nantong Patentee before: JIANGSU JINTONGLING FLUID MACHINERY TECHNOLOGY Co.,Ltd. |
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| 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: Shaft sealing device of air compressor Effective date of registration: 20210727 Granted publication date: 20130116 Pledgee: All bondholders Pledgor: Jintongling Technology Group Co.,Ltd. Registration number: Y2021980006870 |
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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: 20220923 Granted publication date: 20130116 Pledgee: All bondholders Pledgor: Jintongling Technology Group Co.,Ltd. Registration number: Y2021980006870 |