CN102022538A - Rotating shaft sealing device - Google Patents
Rotating shaft sealing device Download PDFInfo
- Publication number
- CN102022538A CN102022538A CN2009101909716A CN200910190971A CN102022538A CN 102022538 A CN102022538 A CN 102022538A CN 2009101909716 A CN2009101909716 A CN 2009101909716A CN 200910190971 A CN200910190971 A CN 200910190971A CN 102022538 A CN102022538 A CN 102022538A
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- Prior art keywords
- ring
- static
- rotating shaft
- sealing device
- rotating
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- 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
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The embodiment of the invention discloses a rotating shaft sealing device, which comprises a dynamic ring arranged on a rotating shaft and a static ring arranged on an end cap, wherein the caliber of the static ring is far smaller than that of the dynamic ring, so that the lubricating oil can flows along the dynamic ring to a tank body when the rotating shaft is static. According to a technical scheme, the dynamic ring is arranged on a bearing, the static ring fit is arranged on the end cap to cooperate with the dynamic ring and the lubricating oil flows to the tank body along the dynamic ring when the rotating shaft is static; therefore, when the rotating shaft rotates at a high speed, an air gap oil membrane seal and a spiral seal, which can achieve a good sealing effect and are reliable, are formed between the dynamic ring and the static ring. The rotating piece and static piece of the whole sealing device are contactless and free from wear and maintenance. And regulating block is used, so the gap between the dynamic ring and the static ring can be regulated by regulating the thickness of the regulating block so as to adapt different working rotation speed and lubricating oil of different viscosities.
Description
Technical field
The present invention relates to the mechanical sealing technology field, in particular, relate to the sealing of novel vertical-shaft aerogenerator group step-up gear output shaft, also be applicable to the sealing of similar vertical mounting mechanism running shaft.
Background technique
Sealing can be divided into static seal and motive sealing two big classes.Static seal mainly contains pad sealing, sealer sealing and direct contact seal three major types.According to working pressure, static seal can be divided into mesolow static seal and high pressure static seal again.The pad sealing of the mesolow static seal softer wider width of material commonly used, high pressure static seal are then with the hard very narrow metallic shim of contact width of material.Motive sealing can be divided into rotary seal and two kinds of fundamental types of reciprocation sealing.Whether the component of doing relative movement by Sealing and its contact, and can be divided into contact seal and noncontact seal; Can be divided into circumferential sealing and end face seal again by Sealing and contact position, end face seal is called mechanical seal again.Centrifugal seal in the motive sealing and spiral seal are to obtain sealing with power for during by machine run medium, so be sometimes referred to as dynamic seal.
Seal arrangement is widely used in mechanical field, particularly the gear-box unit.Just often use gear-box in the middle of wind power generating set, and gear-box is an important mechanical part, its main function is that the transmission of power that wind wheel is produced under the wind-force effect is given generator and made it obtain corresponding rotating speeds.Usually the rotating speed of wind wheel is very low, does not far reach the desired rotating speed of generator for electricity generation, must be used for by the speedup of gear-box gear pair realizing, so also gear-box is referred to as speedup box.
The vertical-shaft aerogenerator group is to research and develop successful novel wind generator group in recent years, and the wind collecting principle is different from the horizontal unit of present main flow fully, has advantages such as the ability of collecting folk songs is strong, the equilibrium of blade stand under load is steady, easy to maintenance, cost per unit is cheap.But because the vertical installation of unit, its step-up gear comprises casing and running shaft, is equipped with bearing on the running shaft, the sealing of running shaft is a difficult problem, traditional non-contact sealing is owing to exist the gap between main shaft and seal arrangement, lubricant oil will flow out casing along the gap, and sealing effect is bad.
Summary of the invention
In view of this, the invention provides a kind of sealing device for rotary shaft, to solve the sealing problem that has the sealing problem, particularly vertical rotation axis of running shaft in the prior art.
For achieving the above object, the invention provides following technological scheme:
A kind of sealing device for rotary shaft comprises:
Be installed in the rotating ring in the rotating shaft;
Be installed in the stationary ring on the end cap, the bore of described stationary ring is much smaller than the bore of described rotating ring, so that described rotating shaft lubricant oil when static flows in the casing along described rotating ring.
Preferably, in above-mentioned sealing device for rotary shaft, the ring wall of described rotating ring is designed to skewed, flows as in the casing smoothly to guarantee lubricant oil.
Preferably, in above-mentioned sealing device for rotary shaft, described stationary ring inside is designed to hollow shape.
Preferably, in above-mentioned sealing device for rotary shaft, be arranged on the adjustment piece between described stationary ring and the described end cap.
Preferably, in above-mentioned sealing device for rotary shaft, described stationary ring is installed on the end cap of described casing.
From technique scheme as can be seen, the present invention is owing to be equipped with rotating ring on bearing, on end cap, cooperate rotating ring to be equipped with stationary ring, when running shaft is static, lubricant oil will flow in the casing along rotating ring, during the running shaft high speed rotating, the air gap oil film seal will be formed between rotating ring and stationary ring and this sealing of spiral seal is not only effective but also reliability is high.Whole sealing device revolving part and static element are contactless, do not wear and tear, and be non-maintaining.Add the use of adjusting piece, can finish the gap of adjusting between rotating ring and the stationary ring by the thickness of adjusting piece and adapt to different operating rotating speed and different viscosities lubricant oil.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technological scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The sealing device for rotary shaft schematic representation that Fig. 1 provides for the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technological scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiments.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment who is obtained under the creative work prerequisite.
The embodiment of the invention discloses a kind of sealing device for rotary shaft, to solve the sealing problem that has the sealing problem, particularly vertical rotation axis of running shaft in the prior art.
Sealing device for rotary shaft as shown in Figure 1, this device are mainly used in the gear-box that sealing is provided with running shaft and are specially adapted to those vertical gear-boxes, but have more than the structure that is confined to the vertical spindle rotation.
Seal arrangement comprises stationary ring 5 and rotating ring 4, and stationary ring 5 can be installed on the casing 1 as required, is provided with the casing of end cap for those, also stationary ring can be installed on the end cap.Rotating ring 4 mainly is installed in the rotating shaft 3, blocks the lubricant oil on the bearing 2, flows out along the slit.And the bore of the relative aperture stationary ring 5 of rotating ring 4 is big, to guarantee that lubricant oil can flow into casing 1 inside along rotating ring.In order better to make flow of lubricant go into casing 1 inside, rotating ring can be designed to skewed.Guarantee that simultaneously stationary ring 5 matches with rotating ring 4 corresponding structures but do not contact.
Adjust piece 6 in order to cooperate different lubricant oil to use, between stationary ring 5 and casing 1, to be provided with, adjust the gap of stationary ring 5 and rotating ring 4.
Novel vertical-shaft aerogenerator group step-up gear is vertical vertical installation, speedup box casing 1 is a fixed block, rotating ring 4 is with running shaft 3 high speed rotating, stationary ring 5 is fixed on the speedup box casing 1, between rotating ring 4 and the stationary ring 5 appropriate clearance is arranged, the big I of this gap is adjusted by adjusting piece 6, and the bidirectional screw sealing is arranged between stationary ring 5 and the running shaft 3.
There are a large amount of flow of lubricants to get off in the speedup box casing 1 during unit work, most lubricant oil that the rotating ring 4 of high speed rotating utilizes centrifugal force will be attached on the running shaft 3 is thrown away, rotating ring 4 and stationary ring 5 form the air gap obstruct because of rotating mutually, lubricant oil can't crawl into running shaft and spills along stationary ring, adjust rotating ring 4 and can adapt to different rotating speeds and lubricant oil with gap between the stationary ring 5, bidirectional screw sealing between stationary ring 5 and the running shaft 3 can be strengthened stoping lubricant oil to spill along running shaft on the one hand, and the negative pressure that spiral seal produces can prevent that also dust in air from entering speedup box pollution lubricating oil simultaneously.Even speedup box is shut down, as long as oil return is unobstructed in time, because the isolation of dynamic and static ring is arranged, the oil leakage incident can not take place in this device yet.
From technique scheme as can be seen, the present invention is owing to be equipped with rotating ring on bearing, on end cap, cooperate rotating ring to be equipped with stationary ring, when running shaft is static, lubricant oil will flow in the casing along rotating ring, during the running shaft high speed rotating, the air gap oil film seal will be formed between rotating ring and stationary ring and this sealing of spiral seal is not only effective but also reliability is high.Whole sealing device revolving part and static element are contactless, do not wear and tear, and be non-maintaining.Add the use of adjusting piece, can finish the gap of adjusting between rotating ring and the stationary ring by the thickness of adjusting piece and adapt to different operating rotating speed and different viscosities lubricant oil.
To the above-mentioned explanation of the disclosed embodiments, make related domain professional and technical personnel can realize or use the present invention.Multiple modification to these embodiments will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments.Therefore, the present invention will can not be restricted to these embodiments shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (5)
1. a sealing device for rotary shaft is characterized in that, comprising:
Be installed in the rotating ring in the rotating shaft;
Be installed in the stationary ring on the casing, the bore of described stationary ring is much smaller than the bore of described rotating ring, so that described rotating shaft lubricant oil when static flows in the casing along described rotating ring.
2. sealing device for rotary shaft according to claim 1 is characterized in that the ring wall of described rotating ring is designed to skewed, flows as in the casing smoothly to guarantee lubricant oil.
3. sealing device for rotary shaft according to claim 2 is characterized in that, described stationary ring inside is designed to hollow shape.
4. sealing device for rotary shaft according to claim 3 is characterized in that, is arranged on the adjustment piece between described stationary ring and the described end cap.
5. sealing device for rotary shaft according to claim 4 is characterized in that described stationary ring is installed on the end cap of described casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101909716A CN102022538A (en) | 2009-09-23 | 2009-09-23 | Rotating shaft sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101909716A CN102022538A (en) | 2009-09-23 | 2009-09-23 | Rotating shaft sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102022538A true CN102022538A (en) | 2011-04-20 |
Family
ID=43864165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101909716A Pending CN102022538A (en) | 2009-09-23 | 2009-09-23 | Rotating shaft sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102022538A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107691A (en) * | 2019-06-04 | 2019-08-09 | 江苏大信环境科技有限公司 | Positive/negative-pressure dynamic rotary sealing structure |
| US11879439B2 (en) | 2018-04-12 | 2024-01-23 | Vestas Wind Systems A/S | Wind turbine drivetrain component with low friction radial shaft seal |
-
2009
- 2009-09-23 CN CN2009101909716A patent/CN102022538A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11879439B2 (en) | 2018-04-12 | 2024-01-23 | Vestas Wind Systems A/S | Wind turbine drivetrain component with low friction radial shaft seal |
| CN110107691A (en) * | 2019-06-04 | 2019-08-09 | 江苏大信环境科技有限公司 | Positive/negative-pressure dynamic rotary sealing structure |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110420 |