CN108087527A - The sealing structure of wind power generating variable pitch gearbox - Google Patents
The sealing structure of wind power generating variable pitch gearbox Download PDFInfo
- Publication number
- CN108087527A CN108087527A CN201711454131.7A CN201711454131A CN108087527A CN 108087527 A CN108087527 A CN 108087527A CN 201711454131 A CN201711454131 A CN 201711454131A CN 108087527 A CN108087527 A CN 108087527A
- Authority
- CN
- China
- Prior art keywords
- seal
- sealing
- output terminal
- sealing structure
- 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.)
- Pending
Links
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
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/44—Free-space packings
- F16J15/447—Labyrinth packings
-
- 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
- F16H2057/02039—Gearboxes for particular applications
- F16H2057/02078—Gearboxes for particular applications for wind turbines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The present invention discloses a kind of sealing structure of wind power generating variable pitch gearbox, sealing structure including babinet, planetary gear train, lubricant passage way and input terminal and output terminal, more lip combination oil seals that input terminal sealing structure is made of primary seal lip, secondary sealing lip and labyrinth seal, they are separately fixed at baffle ring in input shaft and input flange oil sealing hole by shaft block ring and hole；Output end sealing structure includes being located at the outside framework oil seal that lubricating oil is prevented between the small bearing of output terminal and the big bearing of output terminal, grease seal layer and the metal sealing disk that grease leakage is prevented tight against the big bearing of output terminal；The present invention is compact-sized, is easy to use and safeguards.
Description
Technical field
The present invention relates to the gear-boxes used in a kind of pitch system of wind driven generator, are especially for high turn of input shaft
Speed, the variable propeller gearbox under oil sealing internal and external environment cleannes difference operating mode.
Background technology
Variable propeller gearbox of wind power generator is one of wind power generating set critical component, and every blade is furnished with a variable pitch tooth
Roller box when wind-force changes, can ensure to obtain maximum energy, in addition in the case of typhoon with regulation blade angle
Wind turbine can be protected.General blade is monolithic construction, and variable paddle speed reducer is mounted on root of blade close to the position of hub centre.
With flourishing for wind-power electricity generation in recent years, the construction of blade becomes diversification, this means that pitch gear
Case will also change as blade angle adjusts the change of frequency.
Traditional variable propeller gearbox lubrication and encapsulation scheme are such：When blade blade tip is located at more than horizontal direction,
Pitch gear carton upside down, lubricating oil flow down lubrication deep groove ball bearing.Two skeleton oil seal lubricating oil.Two oil sealing grease lubrication,
Ensure service life.Outside framework oil seal between two output bearings had not only played the effect of seal case internal gear oil, but also the big bearing of sealing
Lubricating grease effect.High rotating speed, high commutating frequency, under clean environment degree difference operating mode, if also using the sealing of conventional gearbox
Mode, it is possible to gear, bearing etc. occur and lubricate insufficient or oil leak risk.Conventional gearbox output terminal is adopted
With rubber seal, there are the risks of ageing failure, it is difficult to meet the requirement in 20 year service life, and can not realize and sealing is replaced on tower
Part.
Nowadays the adjustment frequency of major wind turbine producer blade of wind-driven generator is higher and higher, and rotating speed requirement is higher and higher.
This also results in the input terminal rotating speed of variable propeller gearbox high and rotating frequency height.The rotating frequency of some fan blades has increased
20 times are added, this proposes huge challenge to the input shaft part of variable propeller gearbox and sealing, and 20 years projected lives are for one
A little non-exchange rubber seals are also very big test.Rotating oil film is not easy to generate, and commutation moment can make oil sealing dry friction,
The significant losses oil sealing service life.Gear-box internal lubrication oil one section of time limit of usage time, it may appear that oil product cleannes are poor, and particle increases
More, situations such as iron content in oil increase, these have baneful influence to the service life of reinforced seal.This just needs us to high rotating speed,
High commutating frequency, variable propeller gearbox sealing and lubrication under clean environment degree difference operating mode carry out special design；And to output
End sealing is using the brand-new extended life seal form for being suitble to the operating mode.
The content of the invention
It is an object of the invention to：For high rotating speed, high commutating frequency, variable propeller gearbox is close under clean environment degree difference operating mode
It seals difficulty to increase, using conventional seals mode it is possible that gear, bearing etc. occur lubricates insufficient or oil leak wind
The practical problems such as danger, output terminal seal aging failure, provide a kind of new high rotating speed, high commutating frequency, clean environment degree is poor, the longevity
Life requires the lubrication sealing structure of high operating mode apparatus for lower wind power generation variable propeller gearbox.
The object of the present invention is achieved like this：A kind of sealing structure of wind power generating variable pitch gearbox, including babinet, row
The sealing structure of star wheel series, lubricant passage way and input terminal and output terminal, it is characterised in that：
More lip combination oil seals that input terminal sealing structure is made of primary seal lip, secondary sealing lip and labyrinth seal, they are by axis
It is separately fixed at baffle ring and hole with baffle ring in input shaft and input flange oil sealing hole；
Output end sealing structure includes being located at the outside framework oil seal that lubricating oil is prevented between the small bearing of output terminal and the big bearing of output terminal,
Grease seal layer and the metal sealing disk for being butted on the big bearing prevention grease leakage of output terminal.
In the present invention：Input terminal secondary sealing lip surrounds space for iron filings stackeding space with labyrinth seal, output end metal
Seal disc is made of the elastic seal ring of support ring and its support, and elastic seal ring forms machine with elastic force tight against the big bearing of output terminal
Tool seals.
The advantage of the invention is that：In face of high rotating speed, high commutating frequency, the wind generating variable-propeller of clean environment degree difference operating mode
The lubrication sealing structure of gear-box, especially input shaft spring bearing is using the deep groove ball bearing without unilateral sealing ring, tooth
The in vivo lubricating oil of roller box chamber can arrive at input terminal oil sealing directly through bearing.Since input terminal oil sealing of the present invention uses more lip groups
Oil sealing is closed, which is setting a labyrinth seal containing catwalk close to lubricating oil side, and it is close that lubricating oil enters labyrinth
It is honored as a queen, runs into a secondary sealing lip, secondary sealing lip first can intercept the iron filings in lubricating oil and impurity in iron filings stackeding space
In, them is prevented to enter primary seal lip, can so improve the working environment of primary seal lip, improves the sealing effect of primary seal lip
Fruit extends its service life.Due to being equipped with outside framework oil seal and lubricant grease in output terminal, wherein lubricant grease is had concurrently to output
It holds big bearing lubrication and prevents the lubricating oil effect of leaking, therefore they can effectively prevent oil seepage, especially output terminal
Lubricant grease is sealed using the metal sealing disk of longer life expectancy in sealing, since metal sealing disk is close by support plate and elasticity
Seal composition, under elastic force effect, elastic seal ring forms mechanical seal according to elastic force tight against the big bearing of output terminal, in permanent worker
After work, elastic seal ring is ground on bearing wall surface can form a mechanical seal groove.The present invention is compact-sized, uses and ties up
Shield is all very convenient.
Description of the drawings
Fig. 1 is a kind of structure diagram of case study on implementation of the present invention.
Fig. 2 is the partial enlarged view in I regions in Fig. 1.
Fig. 3 is the partial enlarged view in II regions in Fig. 1.
In figure：1st, input flange, 2, primary seal lip, 3, deep groove ball bearing, 4, input shaft, 5, contain planetary gear train and lubrication
The upper box of oil circuit, 6, secondary sealing lip, 7, lower box, 8, the small bearing of output terminal, 9, outside framework oil seal, 10, output gear shaft, 11,
The big bearing of output terminal, 12, metal sealing disk, 13, support ring, 14, labyrinth seal, 15, iron filings stackeding space, 16, grease seal
Layer, 17, elastic seal ring, 18, mechanical seal groove.
Specific embodiment
Attached drawing discloses the concrete structure of the embodiment of the present invention without limitation, the present invention is made below in conjunction with the accompanying drawings into one
The description of step ground.
As seen from Figure 1, the present invention includes the upper box 5 containing planetary gear train and lubricant passage way, the input shaft 4 of input terminal by
Deep groove ball bearing 3 is supported in input flange 1：Output gear shaft 10 is supported on down by exporting small bearing 8 and exporting big bearing 11
In babinet 7.
By Fig. 1 and Fig. 2 as it can be seen that input terminal sealing structure is：What primary seal lip 2, secondary sealing lip 6 and labyrinth seal 14 formed
More lip combination oil seals, they are separately fixed at baffle ring in 1 oil sealing hole of input shaft 4 and input flange by shaft block ring and hole.It is defeated
Enter to hold secondary sealing lip 6 to surround space with labyrinth seal 14 for iron filings stackeding space 15.
By Fig. 1 and Fig. 3 as it can be seen that output end sealing structure include being located at the small bearing 8 of output terminal and the big bearing 11 of output terminal it
Between prevent the outside framework oil seal 9 of lubricating oil, grease seal layer 16 and be butted on the metal that the big bearing 11 of output terminal prevents grease leakage
Seal disc 12.Output end metal seal disc 12 is made of the elastic seal ring 17 of support ring 13 and its support, passes through output gear
Support ring 13 on axis 10 is located in the outer end face of the big bearing 11 of output terminal, big tight against output terminal with elastic force by elastic seal ring 17
Bearing 11 is into mechanical seal groove 18.
Claims (2)
1. a kind of sealing structure of wind power generating variable pitch gearbox, including babinet, planetary gear train, lubricant passage way and input terminal and
The sealing structure of output terminal, it is characterised in that：
More lip combination oil seals that input terminal sealing structure is made of primary seal lip, secondary sealing lip and labyrinth seal, they are used by axis
Baffle ring and hole are separately fixed at baffle ring in input shaft and input flange oil sealing hole；
Output end sealing structure includes being located at the outside framework oil seal that lubricating oil is prevented between the small bearing of output terminal and the big bearing of output terminal,
Grease seal layer and the metal sealing disk that grease leakage is prevented tight against the big bearing of output terminal.
2. the sealing structure of wind power generating variable pitch gearbox according to claim 1, it is characterised in that：Input terminal secondary sealing
Lip surrounds space for iron filings stackeding space with labyrinth seal, and output end metal seal disc is close by support ring and the elasticity being supported by it
Seal forms, and elastic seal ring forms mechanical seal with elastic force tight against the big bearing of output terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711454131.7A CN108087527A (en) | 2017-12-28 | 2017-12-28 | The sealing structure of wind power generating variable pitch gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711454131.7A CN108087527A (en) | 2017-12-28 | 2017-12-28 | The sealing structure of wind power generating variable pitch gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108087527A true CN108087527A (en) | 2018-05-29 |
Family
ID=62180645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711454131.7A Pending CN108087527A (en) | 2017-12-28 | 2017-12-28 | The sealing structure of wind power generating variable pitch gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108087527A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109114201A (en) * | 2018-10-22 | 2019-01-01 | 中车戚墅堰机车车辆工艺研究所有限公司 | A kind of labyrinth seal structure and gear box structure |
| CN109630661A (en) * | 2018-12-28 | 2019-04-16 | 南京高速齿轮制造有限公司 | The wind pitch gear box of sealing structure with filtering function |
| CN109114201B (en) * | 2018-10-22 | 2024-05-07 | 中车戚墅堰机车车辆工艺研究所股份有限公司 | Labyrinth seal structure and gear box structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0717488A (en) * | 1992-11-13 | 1995-01-20 | Tiger Techno B V Kk | Stern tube shaft sealing device |
| CN201225231Y (en) * | 2008-07-31 | 2009-04-22 | 大连华锐股份有限公司 | Wind power generation yawing reduction gear box |
| DE102013219118A1 (en) * | 2013-09-24 | 2015-03-26 | Schaeffler Technologies Gmbh & Co. Kg | Flanged housing unit |
| CN205918768U (en) * | 2016-06-27 | 2017-02-01 | 舍弗勒技术股份两合公司 | Box -shaped seal structure and tapered roller bearing |
| CN206439377U (en) * | 2016-12-28 | 2017-08-25 | 南京高速齿轮制造有限公司 | The lubrication and seal and drive mechanism of wind power generating variable pitch gearbox |
| CN207880039U (en) * | 2017-12-28 | 2018-09-18 | 南京高速齿轮制造有限公司 | The sealing structure of wind power generating variable pitch gearbox |
-
2017
- 2017-12-28 CN CN201711454131.7A patent/CN108087527A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0717488A (en) * | 1992-11-13 | 1995-01-20 | Tiger Techno B V Kk | Stern tube shaft sealing device |
| CN201225231Y (en) * | 2008-07-31 | 2009-04-22 | 大连华锐股份有限公司 | Wind power generation yawing reduction gear box |
| DE102013219118A1 (en) * | 2013-09-24 | 2015-03-26 | Schaeffler Technologies Gmbh & Co. Kg | Flanged housing unit |
| CN205918768U (en) * | 2016-06-27 | 2017-02-01 | 舍弗勒技术股份两合公司 | Box -shaped seal structure and tapered roller bearing |
| CN206439377U (en) * | 2016-12-28 | 2017-08-25 | 南京高速齿轮制造有限公司 | The lubrication and seal and drive mechanism of wind power generating variable pitch gearbox |
| CN207880039U (en) * | 2017-12-28 | 2018-09-18 | 南京高速齿轮制造有限公司 | The sealing structure of wind power generating variable pitch gearbox |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109114201A (en) * | 2018-10-22 | 2019-01-01 | 中车戚墅堰机车车辆工艺研究所有限公司 | A kind of labyrinth seal structure and gear box structure |
| CN109114201B (en) * | 2018-10-22 | 2024-05-07 | 中车戚墅堰机车车辆工艺研究所股份有限公司 | Labyrinth seal structure and gear box structure |
| CN109630661A (en) * | 2018-12-28 | 2019-04-16 | 南京高速齿轮制造有限公司 | The wind pitch gear box of sealing structure with filtering function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190926 Address after: 211100, No. 1 East Tianyuan Road, Jiangning District, Jiangsu, Nanjing Applicant after: Nanjing High Speed Gear Manufacturing Co., Ltd. Applicant after: Nanjing High Precision Transmission Equipment Manufacturing Group Co., Ltd. Address before: 211100, No. 1 East Tianyuan Road, Jiangning District, Jiangsu, Nanjing Applicant before: Nanjing High Speed Gear Manufacturing Co., Ltd. |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200519 Address after: 211100, No. 1 East Tianyuan Road, Jiangning District, Jiangsu, Nanjing Applicant after: NANJING HIGH SPEED GEAR MANUFACTURING Co.,Ltd. Address before: 211100, No. 1 East Tianyuan Road, Jiangning District, Jiangsu, Nanjing Applicant before: NANJING HIGH SPEED GEAR MANUFACTURING Co.,Ltd. Applicant before: Nanjing High Precision Transmission Equipment Manufacturing Group Co., Ltd. |
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| TA01 | Transfer of patent application right |