CN104329467B - S-shaped multiple labyrinth seal device - Google Patents
S-shaped multiple labyrinth seal device Download PDFInfo
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- CN104329467B CN104329467B CN201410549670.9A CN201410549670A CN104329467B CN 104329467 B CN104329467 B CN 104329467B CN 201410549670 A CN201410549670 A CN 201410549670A CN 104329467 B CN104329467 B CN 104329467B
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- ring
- stationary ring
- interior
- rotating ring
- stationary
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Classifications
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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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/44—Free-space packings
- F16J15/447—Labyrinth packings
- F16J15/4476—Labyrinth packings with radial path
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention provides an S-shaped multiple labyrinth seal device, which at least comprises a static ring and a moving ring sleeving a rotary shaft and rotating along with the shaft, wherein the static ring and the moving ring are of a double-layer type structure; the moving ring and the static ring are staggered mutually and connected in a snap joint way; a channel with an S-shaped cross section is jointly formed between the static ring and the moving ring; the channel is provided with three layers along the radial direction, and respectively comprises a lubricating oil channel, an oil isolated channel and a sewage channel from inside to outside; two layers of sealing rings are arranged in each channel; an oil return chute leading to a seal cavity is arranged on the bottom part of the lubricating oil channel along with the axial direction; a dirt discharge groove leading to the outside is arranged on the bottom part of the sewage channel along with the axial direction. The S-shaped multiple labyrinth seal device overcomes the defects in the prior art, can prevent lubricating oil in the seal cavity from leaking, meanwhile, can prevent outside pollutants from entering the seal cavity, and is long in service life and wide in applicability.
Description
Technical field
The invention provides rotary shaft bearing housing or gear box lubricating oil labyrinth gland in a kind of plant equipment, belong to
Sealing device technical field.
Background technology
Labyrinth seal is to set the belt sealing tooth that several are arranged in order around rotary shaft, is formed a series of between tooth and tooth
Dam gap with expansion cavity, sealed medium produces throttle effect when the gap by tortuous labyrinth and reaches Drain Resistance
The device of purpose.Due to there is gap, no solid contact between the rotor of labyrinth seal and casing, and allow thermal expansion,
Therefore adapt to high temperature, high pressure, the occasion of high speed-frequency, this seal form be widely used in steam turbine, gas turbine,
Compressor, the axle head of air blast and at different levels between sealing.
In the stricter occasion of some use requirements, sealing device not only lubricating oil in annular seal space to be reached when using
Zero leakage, but also to reach and prevent the pollutant in the external world from entering the purpose within annular seal space, additionally, for seal
Service life also have higher requirement, therefore it provides a kind of sealing property is very excellent, and long perfomance life
Sealing device, become this area problem demanding prompt solution.
Content of the invention
The invention provides a kind of multiple labyrinth seal device of s type, solve the deficiency in background technology, this device can
Enough prevent the oil leakage in annular seal space, the pollutant in the external world can be stoped simultaneously again to enter annular seal space, its service life
Long, and applicability is wide.
Realizing the technical scheme that above-mentioned purpose of the present invention adopted is:
A kind of multiple labyrinth seal device of s type, at least includes stationary ring and set on the rotating shaft and the rotating ring that rotates with the axis,
Stationary ring is mounted by means of bolts on equipment end lid, and described stationary ring is two-layer stratigraphic structure, including outer stationary ring, interior stationary ring
And connection ring a by the outer stationary ring radial direction mutually fixing with interior stationary ring, three is integral type structure, described connection ring a position
Near the side of annular seal space on outer stationary ring and interior stationary ring, and a circle is disposed radially on outer stationary ring towards the positioning of outer lug
Step, described positioning step is located near extraneous side, and positioning step is provided with axial bolt hole, positioning step
Installed with equipment end cap by bolt and fix；It is provided with seal groove on the outer wall of described outer stationary ring, arrange in described seal groove
There is o shape sealing ring b, described o shape sealing ring b is contacted with equipment end cap, and stationary ring is fixed on equipment end lid；
Described rotating ring is two-layer stratigraphic structure, includes outer rotating ring, interior rotating ring and by the mutually fixation of outer rotating ring and interior rotating ring
Connection ring b of radial direction, three is integral type structure, and described connection ring b is located on outer rotating ring and interior rotating ring near the external world
Side；It is provided with seal groove on the described inwall of interior rotating ring, in described seal groove, be provided with o shape sealing ring a, described
O shape sealing ring a is contacted with rotary shaft, and rotating ring is fixed in rotary shaft and can rotate with the axis；Described rotating ring
Interlaced with stationary ring and snap connection, its China and foreign countries' rotating ring is located between outer stationary ring and interior stationary ring, and interior stationary ring is located at outer rotating ring
And interior rotating ring between, between stationary ring and rotating ring, it is collectively forming the passage that section is s shape, described passage has been disposed radially
Three layers, respectively grease channel, grease channel isolation and sewage routeway, wherein the one of grease channel from the inside to the outside
Annular seal space is led at end, and the external world is led in one end of sewage routeway；
It is provided with two-layer sealing ring in described grease channel, grease channel isolation and sewage routeway, described
Sealing ring is made up of with the rectangular preiection in comb teeth-shaped being fixed on rubber ring rubber ring, at least provided with twice on sealing ring
Projection, the projection in wherein two sealing rings is relative, and staggered interspersed, is collectively forming the gap of rectangular cross-section dentation, institute
Rubber ring in the sealing ring stated is fixed on the rotating ring contacting or stationary ring；
There are an oil-recovery tank leading to annular seal space, described oil return its bottom is axially disposed in described grease channel
Groove be located at interior stationary ring inner surface on, enter grease channel in lubricating oil under gravity, by oil-recovery tank stream
Return annular seal space；In described sewage routeway its bottom axially disposed have one lead to the external world dirt discharge groove, described blowdown
Groove is located on the inner surface of outer stationary ring, and the sewage in entrance sewage routeway under gravity, is entered outer by dirt discharge groove
Boundary；It is filled with isolation fat in described grease channel isolation.
Four roads are provided with described sealing ring raised.
The multiple labyrinth seal device of s type provided by the present invention has the advantage that due to being provided between stationary ring and rotating ring
The passage of s shape, respectively grease channel, grease channel isolation and sewage routeway, are provided with two in above-mentioned passage
Layer sealing ring, the projection in two sealing rings is relative, and staggered interspersed, is collectively forming the gap of rectangular cross-section dentation,
During use, the sealing ring being wherein fixed on rotating ring rotates with the rotation of rotating ring, stationary ring transfixion, and therefore two is close
Seal ring can rotate against, and the lubricating oil entering in annular seal space in grease channel is thrown toward and stationary ring under the influence of centrifugal force
In the fixing oil storage tank of sealing ring, then under gravity, also annular seal space can be flowed back to by oil-recovery tank, therefore, it is possible to
Entirely prevent oil leakage.Equally, by the extraneous sewage entering in sewage routeway be thrown toward under the influence of centrifugal force with
In the fixing sewage groove of sealing ring of stationary ring, due to having one to lead to the external world its bottom is axially disposed in sewage routeway
Dirt discharge groove, can enter the external world by dirt discharge groove under gravity hence into the sewage in sewage routeway.Described oil
It is filled with isolation fat, stop-leak compound can be opened thoroughly completely cutting off between grease channel and sewage routeway in fat channel isolation
Come it is ensured that sealing effectiveness perfectly safe.
The s type multiple labyrinth seal device long service life that the present invention provides, after employing 2-3, even if sealing ring
Between create abrasion, but this device can also proceed use because under gravitational and centrifugal forces, return
Oil groove and dirt discharge groove remain able to play a role, and the isolation fat in grease channel isolation in the same old way can by grease channel with
And sewage routeway is separated.Additionally, the s type multiple labyrinth seal device that the present invention provides is applied under various occasions
Sealing.
Brief description
The overall structure diagram of the s type multiple labyrinth seal device that Fig. 1 provides for the present invention；
The outer stationary ring of in figure: 1-, stationary ring in 2-, 3- connection ring a, 4- positioning step, the outer rotating ring of 5-, rotating ring in 6-, 7-
Connection ring b, 8- grease channel, 9- grease channel isolation, 10- sewage routeway, 11- oil-recovery tank, 12- dirt discharge groove, 13-
Sealing ring, 14-o shape sealing ring a, 15-o shape sealing ring b.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment does detailed specific description to the present invention, but protection scope of the present invention is simultaneously
It is not limited to following examples.
The structure of the s type multiple labyrinth seal device that the present invention provides is as shown in figure 1, at least including stationary ring and being enclosed within
In rotary shaft and the rotating ring that rotates with the axis, stationary ring is mounted by means of bolts on equipment end lid, and described stationary ring is bilayer
Formula structure, including connection ring a3 of outer stationary ring 1, interior stationary ring 2 and the radial direction mutually fixing outer stationary ring 1 with interior stationary ring 2,
Three is integral type structure, and described connection ring a3 is located at close annular seal space side on outer stationary ring 1 and interior stationary ring 2.Institute
It is provided with seal groove on the outer wall stating outer stationary ring, in described seal groove, be provided with o shape sealing ring b15, described o shape sealing
Circle b15 is contacted with equipment end cap, and stationary ring is fixed on equipment end lid.It has been disposed radially a circle on outer stationary ring 1
Towards the positioning step 4 of outer lug, described positioning step 4 is located near extraneous side, and positioning step 4 is provided with axle
To bolt hole, positioning step 4 passes through bolt and equipment end cap to be installed and fixes.
Described rotating ring is two-layer stratigraphic structure, including outer rotating ring 5, interior rotating ring 6 and by outer rotating ring 5 and interior rotating ring 6 phase
Connection ring b7 of fixing radial direction, three is integral type structure, and described connection ring b7 is located at outer rotating ring 5 and interior rotating ring 6
The upper side near the external world；It is provided with seal groove on the described inwall of interior rotating ring 6, in described seal groove, be provided with o shape
Sealing ring a14, described o shape sealing ring a is contacted with rotary shaft, and rotating ring is fixed in rotary shaft can be with
Axle rotates.
Described rotating ring and stationary ring are interlaced and snap connection, and its China and foreign countries' rotating ring 5 is located between outer stationary ring 1 and interior stationary ring 2,
Interior stationary ring 2 is located between outer rotating ring 5 and interior rotating ring 6, is collectively forming the passage that section is s shape between stationary ring and rotating ring,
Described passage has been disposed radially three layers, from the inside to the outside respectively grease channel 8, grease channel isolation 9 and dirt
Aquaporin 10, annular seal space is led in one end of wherein grease channel 8, and the external world is led in one end of sewage routeway 10.
It is provided with two-layer sealing ring 13 in described grease channel 8, grease channel isolation 9 and sewage routeway 10,
Described sealing ring 13 is made up of with the rectangular preiection in comb teeth-shaped being fixed on rubber ring rubber ring, on sealing ring 13
It is provided with four roads raised, the projection in wherein two sealing rings is relative, and staggered interspersed, it is collectively forming rectangular cross-section dentation
Gap, the rubber ring in described sealing ring is fixed on the rotating ring contacting or stationary ring.
There is an oil-recovery tank leading to annular seal space 11 its bottom is axially disposed in described grease channel 8, described
Oil-recovery tank 11 is located on the inner surface of interior stationary ring 2, and the lubricating oil in entrance grease channel under gravity, leads to
Cross oil-recovery tank and flow back to annular seal space；In described sewage routeway 10 its bottom axially disposed have one lead to the external world row
Dirty groove 12, described dirt discharge groove 12 is located on the inner surface of outer stationary ring 1, and the sewage entering in sewage routeway is made in gravity
With under, the external world is entered by dirt discharge groove；It is filled with isolation fat in described grease channel isolation.
In the present embodiment, when the diameter of axle of rotary shaft is larger or rotating speed is higher, different for anti-locating snap ring and rotary shaft are skidded
Interior rotating ring can outwardly be extended by step rotation, so that it is fixing or auxiliary using clip to adopt jackscrew to implement auxiliary in extending part
Help fixation.
Claims (2)
1. the multiple labyrinth seal device of a kind of s type, at least include stationary ring and set on the rotating shaft and rotate with the axis dynamic
Ring, stationary ring be mounted by means of bolts on equipment end lid it is characterised in that: described stationary ring be two-layer stratigraphic structure, bag
Include outer stationary ring, interior stationary ring and connection ring a by the outer stationary ring radial direction mutually fixing with interior stationary ring, three is integral type structure,
Described connection ring a is located at the side on outer stationary ring and interior stationary ring near annular seal space, and has been disposed radially a circle on outer stationary ring
Towards the positioning step of outer lug, described positioning step is located near extraneous side, and positioning step is provided with axial spiral shell
Keyhole, positioning step passes through bolt and installs fixation with equipment end cap；It is provided with seal groove, institute on the outer wall of described outer stationary ring
State and in seal groove, be provided with o shape sealing ring b, described o shape sealing ring b is contacted with equipment end cap, and stationary ring is fixed
On equipment end lid；
Described rotating ring is two-layer stratigraphic structure, includes outer rotating ring, interior rotating ring and by the mutually fixation of outer rotating ring and interior rotating ring
Connection ring b of radial direction, three is integral type structure, and described connection ring b is located on outer rotating ring and interior rotating ring near the external world
Side；It is provided with seal groove on the described inwall of interior rotating ring, in described seal groove, be provided with o shape sealing ring a, described
O shape sealing ring a is contacted with rotary shaft, and rotating ring is fixed in rotary shaft and can rotate with the axis；Described rotating ring
Interlaced with stationary ring and snap connection, its China and foreign countries' rotating ring is located between outer stationary ring and interior stationary ring, and interior stationary ring is located at outer rotating ring
And interior rotating ring between, between stationary ring and rotating ring, it is collectively forming the passage that section is s shape, described passage has been disposed radially
Three layers, respectively grease channel, grease channel isolation and sewage routeway, wherein the one of grease channel from the inside to the outside
Annular seal space is led at end, and the external world is led in one end of sewage routeway；
It is provided with two-layer sealing ring in described grease channel, grease channel isolation and sewage routeway, described
Sealing ring is made up of with the rectangular preiection in comb teeth-shaped being fixed on rubber ring rubber ring, at least provided with twice on sealing ring
Projection, the projection in wherein two sealing rings is relative, and staggered interspersed, is collectively forming the gap of rectangular cross-section dentation, institute
Rubber ring in the sealing ring stated is fixed on the rotating ring contacting or stationary ring；
There are an oil-recovery tank leading to annular seal space, described oil return its bottom is axially disposed in described grease channel
Groove be located at interior stationary ring inner surface on, enter grease channel in lubricating oil under gravity, by oil-recovery tank stream
Return annular seal space；In described sewage routeway its bottom axially disposed have one lead to the external world dirt discharge groove, described blowdown
Groove is located on the inner surface of outer stationary ring, and the sewage in entrance sewage routeway under gravity, is entered outer by dirt discharge groove
Boundary；It is filled with isolation fat in described grease channel isolation.
2. the multiple labyrinth seal device of s type according to claim 1 it is characterised in that: on described sealing ring
It is provided with four roads raised.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410549670.9A CN104329467B (en) | 2014-10-16 | 2014-10-16 | S-shaped multiple labyrinth seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410549670.9A CN104329467B (en) | 2014-10-16 | 2014-10-16 | S-shaped multiple labyrinth seal device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104329467A CN104329467A (en) | 2015-02-04 |
| CN104329467B true CN104329467B (en) | 2017-01-18 |
Family
ID=52404241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410549670.9A Active CN104329467B (en) | 2014-10-16 | 2014-10-16 | S-shaped multiple labyrinth seal device |
Country Status (1)
| Country | Link |
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| CN (1) | CN104329467B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605229B (en) * | 2016-02-29 | 2017-07-18 | 邓伦胜 | A kind of gas-liquid isolating device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2120926U (en) * | 1992-04-11 | 1992-11-04 | 大连理工大学 | Blocking throttle intersperse type contactless rotation seal |
| US6287014B1 (en) * | 1998-12-21 | 2001-09-11 | Svedala Industries Canada, Inc. | Roll for conveyor |
| DE102006024154B3 (en) * | 2006-05-22 | 2007-07-19 | Gurtec Gmbh | Shaft seal and roller for a conveyer has inner and outer seals with rings and a projection at one ring that wears on an opposite ring on rotation to reduce the gap |
| CN201714595U (en) * | 2010-04-16 | 2011-01-19 | 辽宁中科天道新能源装备工业有限公司 | Main shafting structure of megawatt doubly-fed type asynchronous variable speed wind-driven generator |
| CN203023297U (en) * | 2012-11-20 | 2013-06-26 | 北方重工集团有限公司 | Labyrinth seal structure of main shaft bearing of double-geared roller crusher |
| CN103511472A (en) * | 2012-06-28 | 2014-01-15 | 杜超逸 | Sealed bearing seat |
| CN203548924U (en) * | 2013-11-18 | 2014-04-16 | 西安正麒电气有限公司 | Axial labyrinth seal structure |
-
2014
- 2014-10-16 CN CN201410549670.9A patent/CN104329467B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2120926U (en) * | 1992-04-11 | 1992-11-04 | 大连理工大学 | Blocking throttle intersperse type contactless rotation seal |
| US6287014B1 (en) * | 1998-12-21 | 2001-09-11 | Svedala Industries Canada, Inc. | Roll for conveyor |
| DE102006024154B3 (en) * | 2006-05-22 | 2007-07-19 | Gurtec Gmbh | Shaft seal and roller for a conveyer has inner and outer seals with rings and a projection at one ring that wears on an opposite ring on rotation to reduce the gap |
| CN201714595U (en) * | 2010-04-16 | 2011-01-19 | 辽宁中科天道新能源装备工业有限公司 | Main shafting structure of megawatt doubly-fed type asynchronous variable speed wind-driven generator |
| CN103511472A (en) * | 2012-06-28 | 2014-01-15 | 杜超逸 | Sealed bearing seat |
| CN203023297U (en) * | 2012-11-20 | 2013-06-26 | 北方重工集团有限公司 | Labyrinth seal structure of main shaft bearing of double-geared roller crusher |
| CN203548924U (en) * | 2013-11-18 | 2014-04-16 | 西安正麒电气有限公司 | Axial labyrinth seal structure |
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| Publication number | Publication date |
|---|---|
| CN104329467A (en) | 2015-02-04 |
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Effective date of registration: 20171122 Address after: 435300 Qichun County, Hubei Province, Chek Tung Village, Chek Tung town, Qichun County Patentee after: New Polytron Technologies Inc in Hubei Address before: 430000 Hubei Wuhan city East Lake Development Zone, Wuhan University Science Park pioneering Building 2 building Patentee before: WUHAN XINZHI SEAL TECHNOLOGY CO., LTD. |