CN103452897A - Modified air seal structure - Google Patents
Modified air seal structure Download PDFInfo
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- CN103452897A CN103452897A CN2013104320837A CN201310432083A CN103452897A CN 103452897 A CN103452897 A CN 103452897A CN 2013104320837 A CN2013104320837 A CN 2013104320837A CN 201310432083 A CN201310432083 A CN 201310432083A CN 103452897 A CN103452897 A CN 103452897A
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- air seal
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- sealing
- sealing gland
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Abstract
The invention relates to a modified air seal structure comprising a gear case, a bearing, an oil seal, an air seal, and a shaft. The bearing is fixed on the gear case, and the shaft is supported by the bearing. One end of the shaft is connected with an impeller. The air seal is disposed between the impeller and the bearing. The oil seal is disposed between the air seal and the bearing. Two maze passages form between the air seal and the shaft. Each air seal is in the maze structure and provided with a plurality of seal teeth. The oil seal is in the maze structure. The gear case is provided with an air hole, a cavity is formed between the air hole and the air seal, and the cavity forms a flow passage. The area of the flow passage between the air hole and the air seal is enlarged greatly, so that gas leaking from the air seal is guided into atmosphere; the service life of lubricating oil is prolonged; harm of gas leakage is reduced; especially, the structure is effective more significantly under the high-pressure-ratio operation condition.
Description
Technical field
The present invention relates to a kind of improved air seal structure, specifically be applied to the step-up gear in blower field, belong to the mechanical structure technical field.
Background technique
In existing technology, high-speed centrifugal fan, owing in impeller cavity and spiral case, having high pressure, can make gas leak, and takes turns the back of the body by impeller and scurries into gear-box along axle.So usually all can the labyrinth air seal device be set at wheel back of the body place, be that the leakage rate of gas is controlled in rational scope.On the other hand, owing to adopting sliding bearing, also there is the problem of a leakage in lubricant oil, even can be in axle enters spiral case.So also oil sealing must be set on axle.
Between impeller and bearing, be provided with oil sealing and sealing gland.If the lubricated oil phase leaked out in the gas leaked out in sealing gland and oil sealing merges; emulsion can occur in lubricant oil; greatly affect the quality of oil product; reduced the working life of lubricant oil; in order to address the above problem; usually can a ventilating hole be set in gear-box, make the gas leaked in sealing gland pass into atmosphere, avoid itself and lubricated oil phase to melt.In practice, emulsion can alleviate.But, under the application conditions of some high pressure ratios, because air leakage raises, emulsion is still serious.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, thereby provide a kind of good oil gas separation effect, air seal structure simple in structure.
According to technological scheme provided by the invention, a kind of improved air seal structure comprises gear-box, bearing, oil sealing, sealing gland, axle; Described bearing is fixed on gear-box, the bearings axle; One end of axle is connected with impeller; Be provided with sealing gland between impeller and bearing; Described oil sealing is between sealing gland and bearing; Form two mazy passages between described sealing gland and axle.
As a further improvement on the present invention, described sealing gland is maze-type structure, on sealing gland, with several, seals tooth.
As a further improvement on the present invention, described oil sealing is also maze-type structure, is mainly used in controlling the lubricants capacity leaked.
As a further improvement on the present invention, described gear-box is provided with a ventilating hole, is provided with a cavity between ventilating hole and sealing gland, the formed runner of cavity, its runner minimum sectional area all should be at oil sealing place cross section of fluid channel long-pending more than 20 times.
The present invention compared with prior art, by establish a cavity in gear-box, enlarges the Flow area between ventilating hole and sealing gland greatly, thereby the gas that guiding is leaked from sealing gland directly enters atmosphere.From fluid mechanics principle, Flow area is larger, and drag losses is less.The gas leaked out all enters atmosphere by ventilating hole more than 95%, thereby greatly reduces the possibility that emulsification occurs; Improved the working life of lubricant oil; The present invention is simple in structure, has reduced the harm of Leakage Gas, and especially, under the utilization condition of high pressure ratio, effect is more remarkable.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Following the present invention is further described in connection with the embodiment in accompanying drawing:
As shown in Figure 1: a kind of improved air seal structure comprises gear-box 1, bearing 2, oil sealing 3, sealing gland 4, axle 5 and impeller 6 etc.
Described bearing 2 is fixed on gear-box 1, bearing 2 back shafts 5.One end of axle 5 is connecting impeller.Between impeller and bearing 5, be provided with sealing gland 4.Described sealing gland 4 is mazy type, with several sealing teeth.Impeller end has pressurized gas, and pressurized gas are by two mazy passages that form between sealing gland 4 and axle 5, and pressure can reduce step by step.Labyrinth air seal 4 is also to control by this principle the gas flow leaked out; The pressurized gas that leak are flowed through after sealing gland, and two passages are arranged, and one is to enter atmosphere by ventilating hole.Another is to enter oil sealing, with lubricant oil, mixes, and forms emulsification.
Described oil sealing 3 is between sealing gland 4 and bearing 2, and structure is also mazy type, is mainly used in controlling the lubricants capacity leaked.
Described gear-box is provided with a ventilating hole 1-1, is provided with a cavity 1-2 between ventilating hole 1-1 and sealing gland, the formed runner of cavity, its minimum sectional area all should be at oil sealing place cross section of fluid channel long-pending more than 20 times.
The present invention is mainly that this cavity, between sealing gland and ventilating hole, dwindles the gap of oil sealing and the shaft shoulder simultaneously by establish a cavity 1-2 in gear-box; The formed runner of cavity, its minimum sectional area all should be at oil sealing place cross section of fluid channel long-pending more than 20 times; Greatly enlarge the Flow area between ventilating hole 1-1 and sealing gland 4, thereby the gas that guiding is leaked from sealing gland 4 directly enters atmosphere.
From fluid mechanics principle, Flow area is larger, and drag losses is less.The gas leaked out all enters atmosphere by ventilating hole 1-1 more than 95%, thereby greatly reduces the possibility that emulsification occurs.Further, improved the working life of lubricant oil.The present invention is simple in structure, has reduced the harm of Leakage Gas, and especially, under the utilization condition of high pressure ratio, effect is more remarkable.
Claims (4)
1. an improved air seal structure, comprise gear-box (1), bearing (2), axle (5) and impeller (6); It is characterized in that: described bearing (2) is fixed on (1) on gear-box, bearing (2) back shaft (5); Described axle (5) is connected with impeller (6); Be provided with sealing gland (4) between impeller (6) and axle (5); Described oil sealing (3) is positioned between sealing gland (4) and bearing (2); Form two mazy passages between described sealing gland (4) and axle (5).
2. a kind of improved air seal structure as claimed in claim 1 is characterized in that: described sealing gland (4) is maze-type structure, and sealing gland (4) is upper with several sealing teeth.
3. a kind of improved air seal structure as claimed in claim 1, it is characterized in that: described oil sealing (3) is maze-type structure.
4. a kind of improved air seal structure as claimed in claim 1, it is characterized in that: described gear-box (1) is provided with a ventilating hole (1-1), be provided with a cavity (1-2) between ventilating hole (1-1) and sealing gland (4), cavity forms runner, and its cross section of fluid channel amasss long-pending more than 20 times at oil sealing place cross section of fluid channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104320837A CN103452897A (en) | 2013-09-22 | 2013-09-22 | Modified air seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104320837A CN103452897A (en) | 2013-09-22 | 2013-09-22 | Modified air seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103452897A true CN103452897A (en) | 2013-12-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2013104320837A Pending CN103452897A (en) | 2013-09-22 | 2013-09-22 | Modified air seal structure |
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| CN (1) | CN103452897A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104100540A (en) * | 2014-08-07 | 2014-10-15 | 珠海格力电器股份有限公司 | Centrifugal compressor and air conditioning system comprising same |
| CN105257591A (en) * | 2015-11-09 | 2016-01-20 | 江苏杰尔科技股份有限公司 | Impeller mounting structure of single-stage high-speed centrifugal fan |
| CN105570184A (en) * | 2015-12-23 | 2016-05-11 | 三一环保科技有限公司 | Air seal structure and steam compressor thereof |
| CN109026761A (en) * | 2018-10-18 | 2018-12-18 | 毕森机械（上海）有限公司 | A kind of compressor host |
| CN110056513A (en) * | 2019-06-11 | 2019-07-26 | 重庆德蚨乐机械制造有限公司 | Steam Compressor sealing structure |
| CN110242735A (en) * | 2019-06-13 | 2019-09-17 | 南京高精船用设备有限公司 | A kind of high-speed gear box sealing structure |
| CN113700833A (en) * | 2021-08-25 | 2021-11-26 | 湖南泛航智能装备有限公司 | Structure and method for balancing pressure of gear box cavity of compressor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2366483A1 (en) * | 1976-10-04 | 1978-04-28 | Ina Roulements Sa | Bearing for engine cooling fluid pump - has two seals retaining fluid and lubricant respectively with vented air gap between |
| US4171137A (en) * | 1977-06-01 | 1979-10-16 | Ishikawajima-Harima Jukogyo Kabushiki Kaisha | Slinger arrangement for use with bearing of supercharger |
| JPH09189232A (en) * | 1996-01-08 | 1997-07-22 | Mitsubishi Heavy Ind Ltd | Lubricating oil seal device of exhaust gas turbine supercharger |
| CN201100265Y (en) * | 2007-10-23 | 2008-08-13 | 利民化工有限责任公司 | Axis sealing device for acentric wind engine |
| 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 |
| CN203641080U (en) * | 2013-09-22 | 2014-06-11 | 无锡杰尔压缩机有限公司 | Improved air seal structure |
-
2013
- 2013-09-22 CN CN2013104320837A patent/CN103452897A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2366483A1 (en) * | 1976-10-04 | 1978-04-28 | Ina Roulements Sa | Bearing for engine cooling fluid pump - has two seals retaining fluid and lubricant respectively with vented air gap between |
| US4171137A (en) * | 1977-06-01 | 1979-10-16 | Ishikawajima-Harima Jukogyo Kabushiki Kaisha | Slinger arrangement for use with bearing of supercharger |
| JPH09189232A (en) * | 1996-01-08 | 1997-07-22 | Mitsubishi Heavy Ind Ltd | Lubricating oil seal device of exhaust gas turbine supercharger |
| CN201100265Y (en) * | 2007-10-23 | 2008-08-13 | 利民化工有限责任公司 | Axis sealing device for acentric wind engine |
| 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 |
| CN203641080U (en) * | 2013-09-22 | 2014-06-11 | 无锡杰尔压缩机有限公司 | Improved air seal structure |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104074795A (en) * | 2014-07-11 | 2014-10-01 | 无锡杰尔压缩机有限公司 | High-speed shaft seal structure |
| 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 |
| CN104100540A (en) * | 2014-08-07 | 2014-10-15 | 珠海格力电器股份有限公司 | Centrifugal compressor and air conditioning system comprising same |
| CN105257591A (en) * | 2015-11-09 | 2016-01-20 | 江苏杰尔科技股份有限公司 | Impeller mounting structure of single-stage high-speed centrifugal fan |
| CN105570184A (en) * | 2015-12-23 | 2016-05-11 | 三一环保科技有限公司 | Air seal structure and steam compressor thereof |
| CN109026761A (en) * | 2018-10-18 | 2018-12-18 | 毕森机械（上海）有限公司 | A kind of compressor host |
| CN110056513A (en) * | 2019-06-11 | 2019-07-26 | 重庆德蚨乐机械制造有限公司 | Steam Compressor sealing structure |
| CN110056513B (en) * | 2019-06-11 | 2024-01-26 | 重庆德蚨乐机械制造有限公司 | Sealing structure of steam centrifugal compressor |
| CN110242735A (en) * | 2019-06-13 | 2019-09-17 | 南京高精船用设备有限公司 | A kind of high-speed gear box sealing structure |
| CN113700833A (en) * | 2021-08-25 | 2021-11-26 | 湖南泛航智能装备有限公司 | Structure and method for balancing pressure of gear box cavity of compressor |
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Application publication date: 20131218 |