CN103711879A - Mechanical labyrinth sealing structure for wind power gear box - Google Patents
Mechanical labyrinth sealing structure for wind power gear box Download PDFInfo
- Publication number
- CN103711879A CN103711879A CN201410021793.5A CN201410021793A CN103711879A CN 103711879 A CN103711879 A CN 103711879A CN 201410021793 A CN201410021793 A CN 201410021793A CN 103711879 A CN103711879 A CN 103711879A
- Authority
- CN
- China
- Prior art keywords
- output shaft
- rear box
- end cap
- face
- oil
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/027—Gearboxes; Mounting gearing therein characterised by means for venting gearboxes, e.g. air breathers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
- F16H57/0424—Lubricant guiding means in the wall of or integrated with the casing, e.g. grooves, channels, holes
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention relates to a mechanical labyrinth sealing structure for a wind power gear box. The mechanical labyrinth sealing structure comprises a rear box body, an output shaft, an output shaft seal ring, an output shaft end cover and an output shaft oil slinger, wherein the output shaft is arranged on the rear box body by a ball bearing, a first oil return cavity is arranged between the ball bearing and the output shaft seal ring as well as the output shaft, a second oil return cavity is arranged between the output shaft seal ring and the output shaft end cover, the mechanical labyrinth sealing structure is characterized in that a vent hole penetrating through the side wall is axially formed in the end surface of the upper part side wall of the rear box body, a first oil return hole and a second oil return hole which are inclined by 6 degrees relative to an axis are formed in the end surface of the lower part side wall of the rear box body, the first oil return hole is located under the lower part of the end surface of the side wall of the rear box body, and the axis of the second oil return hole and a plumb line form a 40-degree included angle; two circular slots are formed in the inner hole of the output shaft end cover, so that a third oil return cavity and a fourth oil return cavity are formed between the output shaft end cover and the output shaft oil slinger. The mechanical labyrinth sealing structure has the advantage of being capable of effectively ensuring no oil leakage in a running process of the gear box.
Description
Technical field
The present invention relates to a kind of wind turbine gearbox machinery labyrinth seal structure, belong to wind turbine gearbox technical field.
Background technique
In the wind power equipment using at wind field now, the leakage of oil of gear-box labyrinth is comparatively general, and the external gear-box of producing also finds there is oil leakage phenomenon at place, output shaft labyrinth.
Summary of the invention
The object of the invention is for the problems referred to above, a kind of wind turbine gearbox machinery labyrinth seal structure that can effectively prevent leakage of oil is provided.
Technological scheme of the present invention is as follows:
The present invention includes rear box, output shaft, output shaft seal ring, output shaft end cap, output shaft disc, output shaft is arranged on rear box by ball bearing, output shaft seal ring is located between rear box and output shaft, and be arranged on rear box, output shaft end cap is arranged on the rear portion of rear box, output shaft disc is located between output shaft end cap and output shaft, and be arranged on output shaft, between ball bearing and output shaft seal ring and output shaft, be provided with the first oil back chamber, between output shaft seal ring and output shaft end cap, be provided with the second oil back chamber, it is characterized in that: on the upper portion side wall end face of rear box, level has the vent that connects sidewall vertically, on the lower sides end face of rear box, have the first spill port and the second spill port with 6 ° of axis inclinations, the first spill port is positioned at the positive bottom of rear box sidewall end face, the axis of the second spill port becomes 40 ° of angles with vertical line, on the endoporus of output shaft end cap, have two circular grooves, make to form between output shaft end cap and output shaft disc the 3rd oil back chamber and the 4th oil back chamber, the first spill port and the second spill port and the equal UNICOM of each oil back chamber, top at the end face of output shaft seal ring has the first vent slot communicating with vent, in the bottom of the end face of output shaft seal ring, becomes the position of 40 ° to have the first oil-return groove communicating with the second spill port with vertical line, in the end face of output shaft end cap, the top on edge has the second vent slot communicating with vent, and in the end face of output shaft end cap, the bottom on edge has the second oil-return groove communicating with the first spill port.
On the sidewall of described the 3rd, the 4th oil back chamber, be equipped with the oblique oil groove that gets rid of;
Between the opposing side between described output shaft seal ring and output shaft, there is 0.5 ~ 0.6mm gap;
The main body of the end face of described output shaft end cap is toroidal surface, increases have the banded face of one section of circular arc in the bottom of toroidal surface;
Between described output shaft disc and output shaft, be interference fit, cylindrical sidewall and the minimum clearance between output shaft end cap of output shaft disc are 0.5 ~ 0.6mm.
Advantage of the present invention is: simple in structure, manufacturing difficulty is low, assembling difficulty is low, can be because of phenomenons such as the poor generation mechanical interferences of machining accuracy, the present invention has the feature of structure uniqueness, oil back chamber and case internal pressure balance, the vacuum that can not cause oil back chamber to form due to high rotating speed causes the phenomenon of fluid suck-back, can effectively guarantee in gear-box running oil-proof.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the I portion enlarged view of Fig. 1;
Fig. 3 is the plan view of rear box;
Fig. 4 is the B-B sectional view of Fig. 3;
Fig. 5 is the plan view of output shaft seal ring;
Fig. 6 is the C-C sectional view of Fig. 5;
Fig. 7 is the plan view of output shaft end cap;
Fig. 8 is the A-A sectional view of Fig. 7;
Fig. 9 is the structural representation of output shaft disc.
Embodiment
With reference to accompanying drawing 1, the present invention includes rear box 1, output shaft 20, output shaft seal ring 2, output shaft end cap 3, output shaft disc 4, output shaft is arranged on rear box by ball bearing 6, output shaft seal ring is located between rear box and output shaft, and be arranged on rear box, output shaft end cap is arranged on the rear portion of rear box, output shaft disc is located between output shaft end cap and output shaft, and be arranged on output shaft, between ball bearing and output shaft seal ring and output shaft, be provided with the first oil back chamber 7, between output shaft seal ring and output shaft end cap, be provided with the second oil back chamber 8.On the endoporus of output shaft end cap, have two circular grooves, make to form between output shaft end cap and output shaft disc the 3rd oil back chamber 9 and the 4th oil back chamber 10.
With reference to accompanying drawing 3,4, on the upper portion side wall end face of rear box, level has the vent 5 that connects sidewall vertically, on the lower sides end face of rear box, have the first spill port 11 and the second spill port 13 with 6 ° of axis inclinations, the first spill port is positioned at the positive bottom of rear box sidewall end face, and the axis of the second spill port becomes 40 ° of angles with vertical line; Vent makes each oil back chamber maintain certain air pressure, two spill ports under tilt 6 °, gear-box is down to tilt 5 ° in working order, has guaranteed that like this spill port has the inclination of 1 °;
With reference to accompanying drawing 5,6, output shaft seal ring is non-rotating, with rear box interference fit, has 0.5 ~ 0.6mm gap with revolving part output shaft in the scope of length 17mm, in the time of can guaranteeing to rotate, interfere, and can prevent that again a large amount of fluid from flowing into the second chamber.The top of end face in the top has the first vent slot 14 communicating with vent, make the first oil pocket maintain stable air pressure, lower end and vertical line become on the height of 40 ° to have the first oil-return groove 15 communicating with the second spill port, guarantee that there is certain trapped fuel amount at bearing place, be unlikely to again fluid too high, to second, third, the 4th oil back chamber pours in.And positioning pin hole 16 is set above its side, and guarantee venting channels and drainback passage aligning, do not misplace;
With reference to accompanying drawing 7,8, in order to make enough large of oil back chamber, in the bottom of output shaft end cap, be designed to widened (generally, the cylindrical of end cap is a full circle), the main body that is designed to the end face of output shaft end cap of the present invention is toroidal surface, in the bottom of toroidal surface, increase and have the banded face 19 of one section of circular arc, improved the reliability of end face seal.Between output shaft end cap and output shaft disc, designed the 3rd, the 4th oil back chamber, in the end face of output shaft end cap, the top on edge has the second vent slot 17 communicating with vent, for the air in tooth case enters each oil back chamber, provides passage; In the end face of output shaft end cap, the bottom on edge has the second oil-return groove 18 communicating with the first spill port, makes fluid return smoothly fuel tank;
In addition, with reference to accompanying drawing 2,7, on the 3rd, the 4th oil back chamber sidewall, designed and got rid of oil groove 12, be used for changing fluid flow direction, guaranteed that fluid flow to each oil back chamber and spill port, stoped fluid to flow along axial direction;
With reference to accompanying drawing 9, output shaft disc is revolving part, with output shaft be interference fit, make itself and output shaft become an integral-rotation, and and output shaft between do not have fluid and flow out; With non-rotating output shaft end cap respectively in length 9mm, 15mm, tri-sections of gaps that have 0.5 ~ 0.6mm of 12mm, guaranteeing under revolving part and non-rotating the condition not interfering, effectively guaranteed that each oil back chamber fluid outwards reduces step by step, until all return fuel tank; In addition, on its cylindrical the 3rd, the 4th oil back chamber place design get rid of oil groove, can make that most of oil liquid is thrown to the 3rd when output shaft runs up, on the outer side wall of the 4th oil back chamber, and flow into the spill port of bottom.
Claims (5)
1. wind turbine gearbox machinery labyrinth seal structure, comprise rear box, output shaft, output shaft seal ring, output shaft end cap, output shaft disc, output shaft is arranged on rear box by ball bearing, output shaft seal ring is located between rear box and output shaft, and be arranged on rear box, output shaft end cap is arranged on the rear portion of rear box, output shaft disc is located between output shaft end cap and output shaft, and be arranged on output shaft, between ball bearing and output shaft seal ring and output shaft, be provided with the first oil back chamber, between output shaft seal ring and output shaft end cap, be provided with the second oil back chamber, it is characterized in that: on the upper portion side wall end face of rear box, level has the vent that connects sidewall vertically, on the lower sides end face of rear box, have the first spill port and the second spill port with 6 ° of axis inclinations, the first spill port is positioned at the positive bottom of rear box sidewall end face, the axis of the second spill port becomes 40 ° of angles with vertical line, on the endoporus of output shaft end cap, have two circular grooves, make to form between output shaft end cap and output shaft disc the 3rd oil back chamber and the 4th oil back chamber, the first spill port and the second spill port and the equal UNICOM of each oil back chamber, top at the end face of output shaft seal ring has the first vent slot communicating with vent, in the bottom of the end face of output shaft seal ring, becomes the position of 40 ° to have the first oil-return groove communicating with the second spill port with vertical line, in the end face of output shaft end cap, the top on edge has the second vent slot communicating with vent, and in the end face of output shaft end cap, the bottom on edge has the second oil-return groove communicating with the first spill port.
2. wind turbine gearbox according to claim 1 machinery labyrinth seal structure, is characterized in that: on the sidewall of described the 3rd, the 4th oil back chamber, be equipped with the oblique oil groove that gets rid of.
3. wind turbine gearbox machinery labyrinth seal structure according to claim 1, is characterized in that: between the opposing side between described output shaft seal ring and output shaft, have 0.5 ~ 0.6mm gap.
4. according to wind turbine gearbox machinery labyrinth seal structure according to claim 1, it is characterized in that: the main body of the end face of described output shaft end cap is toroidal surface, in the bottom of toroidal surface, increase and have the banded face of one section of circular arc.
5. wind turbine gearbox machinery labyrinth seal structure according to claim 1, is characterized in that: between described output shaft disc and output shaft, be interference fit, cylindrical sidewall and the minimum clearance between output shaft end cap of output shaft disc are 0.5 ~ 0.6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410021793.5A CN103711879B (en) | 2014-01-17 | 2014-01-17 | A kind of wind turbine gearbox mechanical labyrinth sealing configuration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410021793.5A CN103711879B (en) | 2014-01-17 | 2014-01-17 | A kind of wind turbine gearbox mechanical labyrinth sealing configuration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103711879A true CN103711879A (en) | 2014-04-09 |
| CN103711879B CN103711879B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410021793.5A Expired - Fee Related CN103711879B (en) | 2014-01-17 | 2014-01-17 | A kind of wind turbine gearbox mechanical labyrinth sealing configuration |
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| CN (1) | CN103711879B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867691A (en) * | 2014-04-15 | 2014-06-18 | 郑州机械研究所 | Shaft-end seal and oil return structure of gear box |
| CN104879479A (en) * | 2015-05-18 | 2015-09-02 | 江苏泰隆减速机股份有限公司 | Double-layer leakage-free end cover |
| CN107283300A (en) * | 2017-07-04 | 2017-10-24 | 广东赛因迪科技股份有限公司 | A kind of planetary bistrique with anti-oil leakage mechanism |
| CN107806505A (en) * | 2017-12-12 | 2018-03-16 | 重庆望江工业有限公司 | A kind of wind turbine gearbox output shaft seal structure |
| CN107939954A (en) * | 2017-12-26 | 2018-04-20 | 三重能有限公司 | Sealing structure and wind power speed-increasing machine for wind power speed-increasing machine |
| CN108019430A (en) * | 2016-11-04 | 2018-05-11 | 财团法人工业技术研究院 | Fluid machinery lubricating system assembly |
| CN108351021A (en) * | 2015-11-13 | 2018-07-31 | 德纳重型车辆系统集团有限责任公司 | Lubricant stream regulating system and the axle unit manufactured with it |
| CN108711997A (en) * | 2018-05-17 | 2018-10-26 | 中车永济电机有限公司 | Multi-function motor bearing seal structure |
| US20220333676A1 (en) * | 2018-12-28 | 2022-10-20 | Crrc Qishuyan Institute Co., Ltd. | Gearbox with novel bearing configuration for railway vehicle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE60112867T2 (en) * | 2000-05-16 | 2006-03-16 | Saint-Gobain Calmar, S.A. | PUMP WITH A DECOMPRESSION DEVICE |
| CN201588744U (en) * | 2009-11-03 | 2010-09-22 | 南车戚墅堰机车车辆工艺研究所有限公司 | Sealing device of wind power generation speed-increasing gearbox |
| DE102011012867A1 (en) * | 2010-03-03 | 2011-09-08 | Sew-Eurodrive Gmbh & Co. Kg | Arrangement for non-contact sealing of a rotatably mounted shaft to a housing and gearbox |
| CN202125617U (en) * | 2011-06-29 | 2012-01-25 | 杭州开兰重工机械有限公司 | Improved sealing structure of output end of high-speed output shaft of wind power gear box |
| CN202451792U (en) * | 2012-02-22 | 2012-09-26 | 天津市祥威传动设备有限公司 | High speed class combined seal oil return mechanism in main wind power gear box |
| CN203189693U (en) * | 2013-03-29 | 2013-09-11 | 常州市瑞泰工程机械有限公司 | Self-backflow type sealing structure of rail vehicle gear case |
-
2014
- 2014-01-17 CN CN201410021793.5A patent/CN103711879B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE60112867T2 (en) * | 2000-05-16 | 2006-03-16 | Saint-Gobain Calmar, S.A. | PUMP WITH A DECOMPRESSION DEVICE |
| CN201588744U (en) * | 2009-11-03 | 2010-09-22 | 南车戚墅堰机车车辆工艺研究所有限公司 | Sealing device of wind power generation speed-increasing gearbox |
| DE102011012867A1 (en) * | 2010-03-03 | 2011-09-08 | Sew-Eurodrive Gmbh & Co. Kg | Arrangement for non-contact sealing of a rotatably mounted shaft to a housing and gearbox |
| CN202125617U (en) * | 2011-06-29 | 2012-01-25 | 杭州开兰重工机械有限公司 | Improved sealing structure of output end of high-speed output shaft of wind power gear box |
| CN202451792U (en) * | 2012-02-22 | 2012-09-26 | 天津市祥威传动设备有限公司 | High speed class combined seal oil return mechanism in main wind power gear box |
| CN203189693U (en) * | 2013-03-29 | 2013-09-11 | 常州市瑞泰工程机械有限公司 | Self-backflow type sealing structure of rail vehicle gear case |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867691A (en) * | 2014-04-15 | 2014-06-18 | 郑州机械研究所 | Shaft-end seal and oil return structure of gear box |
| CN104879479A (en) * | 2015-05-18 | 2015-09-02 | 江苏泰隆减速机股份有限公司 | Double-layer leakage-free end cover |
| CN108351021A (en) * | 2015-11-13 | 2018-07-31 | 德纳重型车辆系统集团有限责任公司 | Lubricant stream regulating system and the axle unit manufactured with it |
| CN108019430B (en) * | 2016-11-04 | 2020-09-01 | 财团法人工业技术研究院 | Fluid machinery lubricating system assembly |
| CN108019430A (en) * | 2016-11-04 | 2018-05-11 | 财团法人工业技术研究院 | Fluid machinery lubricating system assembly |
| US10316953B2 (en) | 2016-11-04 | 2019-06-11 | Industrial Technology Research Institute | Assembly of lubrication system for fluid machinery |
| CN107283300A (en) * | 2017-07-04 | 2017-10-24 | 广东赛因迪科技股份有限公司 | A kind of planetary bistrique with anti-oil leakage mechanism |
| CN107806505A (en) * | 2017-12-12 | 2018-03-16 | 重庆望江工业有限公司 | A kind of wind turbine gearbox output shaft seal structure |
| CN107806505B (en) * | 2017-12-12 | 2024-01-05 | 重庆望江工业有限公司 | Wind-powered electricity generation gear box output shaft seal structure |
| CN107939954A (en) * | 2017-12-26 | 2018-04-20 | 三重能有限公司 | Sealing structure and wind power speed-increasing machine for wind power speed-increasing machine |
| CN108711997A (en) * | 2018-05-17 | 2018-10-26 | 中车永济电机有限公司 | Multi-function motor bearing seal structure |
| US20220333676A1 (en) * | 2018-12-28 | 2022-10-20 | Crrc Qishuyan Institute Co., Ltd. | Gearbox with novel bearing configuration for railway vehicle |
| US11920669B2 (en) * | 2018-12-28 | 2024-03-05 | Crrc Qishuyan Institute Co., Ltd. | Gearbox with bearing configuration for rail vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103711879B (en) | 2016-01-20 |
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