CN201963591U - Shaft seal device of air compressor - Google Patents
Shaft seal device of air compressor Download PDFInfo
- Publication number
- CN201963591U CN201963591U CN2011200567752U CN201120056775U CN201963591U CN 201963591 U CN201963591 U CN 201963591U CN 2011200567752 U CN2011200567752 U CN 2011200567752U CN 201120056775 U CN201120056775 U CN 201120056775U CN 201963591 U CN201963591 U CN 201963591U
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- oil
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- seal device
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Abstract
The utility model provides a shaft seal device of an air compressor. A spindle is connected to a carbon ring air seal device and an oil slinger oil seal device. The oil slinger oil seal device comprises two shaft shoulder oil slingers, an oil return passage and an oil seal casing. The oil return passage is located between the two oil slingers, and the diameters of axle of the two oil slingers are bigger than the diameter of axle of the oil return passage. An eddy cavity and an oil return hole are arranged on the oil seal casing, the eddy cavity of the oil seal casing surrounds one oil slinger, the oil return hole is positioned on the lower portion of the oil seal casing, and the oil return hole is communicated with the eddy cavity. The housing case between the carbon ring air seal device and the oil slinger oil seal device is provided with air vents communicated with the air. Both sides of the inlet of the eddy cavity are in the shape of a barb and symmetrically distributed, thereby being favorable for collecting the oil of leakage from the oil slingers. The shaft seal device of the air compressor resolves the problems that leakage rate of traditional air seal is big, axial distance of traditional oil seal is big, combination of the traditional air seal and oil seal easily causes oil-air mixing and medium pollution, and is especially suitable for being matched with a high-speed gear centrifugal air compressor.
Description
Technical field
The utility model relates to the sealing technique of air compression arbor, is meant the gland seal device of the air compressor with carbon-ring type sealing gland and disc oil sealing especially.
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.
The model utility content
Model utility purpose: 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 utility model, 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 utlity model has following characteristics:
1) the utility model 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 utility model 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 utility model 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 utility model 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 utility model is described in further detail 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 |
|---|---|---|---|
| CN2011200567752U CN201963591U (en) | 2011-03-07 | 2011-03-07 | Shaft seal device of air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200567752U CN201963591U (en) | 2011-03-07 | 2011-03-07 | Shaft seal device of air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201963591U true CN201963591U (en) | 2011-09-07 |
Family
ID=44526126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200567752U Expired - Lifetime CN201963591U (en) | 2011-03-07 | 2011-03-07 | Shaft seal device of air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201963591U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108087323A (en) * | 2017-12-27 | 2018-05-29 | 安徽虎渡科达流体机械有限公司 | A kind of centrifugal blower oil-sealing arrangement |
| CN111185798A (en) * | 2020-02-26 | 2020-05-22 | 四川轻化工大学 | Multistage composite sealing device based on rotary table |
| CN112583185A (en) * | 2021-02-24 | 2021-03-30 | 苏州保邦电气有限公司 | Sealing structure for magnetic suspension motor and magnetic suspension motor |
| CN117432782A (en) * | 2023-12-19 | 2024-01-23 | 中国核动力研究设计院 | Protective device for supercritical carbon dioxide power generation system |
-
2011
- 2011-03-07 CN CN2011200567752U patent/CN201963591U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102094845B (en) * | 2011-03-07 | 2013-01-16 | 江苏金通灵流体机械科技股份有限公司 | Shaft seal device of air compressor |
| CN108087323A (en) * | 2017-12-27 | 2018-05-29 | 安徽虎渡科达流体机械有限公司 | A kind of centrifugal blower oil-sealing arrangement |
| CN111185798A (en) * | 2020-02-26 | 2020-05-22 | 四川轻化工大学 | Multistage composite sealing device based on rotary table |
| CN111185798B (en) * | 2020-02-26 | 2024-05-24 | 四川轻化工大学 | Multistage compound sealing device based on revolving stage |
| CN112583185A (en) * | 2021-02-24 | 2021-03-30 | 苏州保邦电气有限公司 | Sealing structure for magnetic suspension motor and magnetic suspension motor |
| CN117432782A (en) * | 2023-12-19 | 2024-01-23 | 中国核动力研究设计院 | Protective device for supercritical carbon dioxide power generation system |
| CN117432782B (en) * | 2023-12-19 | 2024-03-19 | 中国核动力研究设计院 | Protective device for supercritical carbon dioxide power generation system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110907 Effective date of abandoning: 20130227 |
|
| RGAV | Abandon patent right to avoid regrant |