CN214305281U - Flow guide type contact labyrinth sealing device - Google Patents
Flow guide type contact labyrinth sealing device Download PDFInfo
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- CN214305281U CN214305281U CN202023211811.6U CN202023211811U CN214305281U CN 214305281 U CN214305281 U CN 214305281U CN 202023211811 U CN202023211811 U CN 202023211811U CN 214305281 U CN214305281 U CN 214305281U
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Abstract
The utility model provides a diversion contact type labyrinth sealing device, which comprises a movable ring and a static ring, wherein the section of the movable ring is in a reverse C shape, the movable ring comprises a movable connecting ring and a movable sealing ring along the axial direction and an arc-shaped movable supporting ring positioned between the movable connecting ring and the movable sealing ring, and the section of the static ring is in a C shape, and the static connecting ring and the static sealing ring along the axial direction and the arc-shaped static supporting ring positioned between the movable connecting ring and the static sealing ring are included; the movable ring and the static ring are inserted in a staggered manner, the end part of the movable sealing ring is provided with a flow guide ring inclining towards the direction of the static sealing ring, the flow guide ring is provided with a flow guide groove, and the end part of the static sealing ring is provided with a closure ring inclining towards the direction of the movable sealing ring; the inner circular surface of the static sealing ring is provided with more than one inclined sealing lip, and the sealing lips are tightly contacted and sealed with the outer circular surface of the dynamic connecting ring. The device can carry out better sealed to between rotation axis and the bearing frame, and its simple structure, simple to operate, easy to maintain, life are permanent.
Description
Technical Field
The utility model provides a water conservancy diversion type contact labyrinth seal device especially provides a sealing device that is arranged in the rotation axis to seal up the rotation axis, belongs to mechanical seal technical field.
Background
The labyrinth seal is a device which is provided with a plurality of annular seal teeth arranged in sequence around a rotating shaft, a series of cut-off gaps and expansion cavities are formed between the teeth, and the purpose of leakage resistance is achieved by the throttling effect generated when the sealed medium passes through the gaps of the zigzag labyrinth. The labyrinth seal has no solid contact because of the clearance between the rotor and the casing, and allows thermal expansion, so that the labyrinth seal is suitable for occasions of high temperature, high pressure and high rotating speed frequency, and is widely used for sealing shaft ends and stages of steam turbines, gas turbines, compressors and blowers.
In some occasions with strict use requirements, the sealing device not only needs to achieve zero leakage of lubricating oil in the sealing cavity, but also needs to achieve the purpose of preventing external pollutants from entering the sealing cavity, and in addition, the sealing device also has higher requirements on the service life of the sealing element.
The sealing devices in the prior art are more in variety, complicated or simple in structure, and different in sealing performance. In general, however, it would be desirable to provide a seal assembly that is simple in construction, has good sealing properties, and has a long useful life.
Disclosure of Invention
The utility model discloses the needle provides a water conservancy diversion type contact labyrinth seal device, and the device can carry out better sealed to between rotation axis and the bearing frame, and its simple structure, simple to operate, easy to maintain, life are permanent.
Realize the utility model discloses the technical scheme that above-mentioned purpose adopted does:
a flow guide type contact labyrinth seal device is arranged between a rotating shaft and a bearing seat, the rotating shaft is arranged in the bearing seat and extends out of the bearing seat, a gap between the inside of the bearing seat and the rotating shaft is a seal cavity, the flow guide type contact labyrinth seal device comprises a movable ring and a stationary ring, wherein the section of the movable ring is in a reverse C shape and comprises a movable connecting ring and a movable sealing ring along the axial direction and an arc-shaped movable supporting ring positioned between the movable connecting ring and the movable sealing ring, the movable connecting ring and the stationary ring are connected into an integral structure, and the movable connecting ring is sleeved on the rotating shaft and is connected and fixed with the rotating shaft through a fixed support; the section of the static ring is C-shaped, the static ring comprises a static connecting ring and a static sealing ring along the axial direction, and an arc-shaped static supporting ring positioned between the static connecting ring and the static sealing ring, the static connecting ring and the static sealing ring are connected into an integral structure, the end part of the static connecting ring is provided with a positioning step along the radial direction, and the positioning step is attached to the side wall of the bearing seat and fixed with the bearing seat through a bolt and a pressing plate;
the movable ring and the static ring are alternately inserted, the movable sealing ring is positioned between the static connecting ring and the static sealing ring, the static sealing ring is positioned between the movable connecting ring and the movable sealing ring, the end part of the movable sealing ring is provided with a flow guide ring which inclines towards the static sealing ring, the flow guide ring is provided with a flow guide groove, the end part of the static sealing ring is provided with a cut-off ring which inclines towards the movable sealing ring, and the movable ring, the flow guide ring, the static ring and the cut-off ring form a zigzag labyrinth sealing cavity together; the inner circular surface of the static sealing ring is provided with more than one inclined sealing lip, the sealing lip is tightly contacted and sealed with the outer circular surface of the dynamic connecting ring, and the outer circular surface of the dynamic sealing ring is radially provided with more than one flinger.
The cross-section of the fixed support is L-shaped, and comprises an axial support which is axially arranged and sleeved on the rotating shaft and a radial support which is radially arranged and attached to the movable support ring, the axial support and the radial support are connected into a whole, the axial support is fixedly connected with the rotating shaft through a bolt, and the radial support and the movable support ring are fixedly connected through a bolt.
The movable ring is internally provided with a sealing panel, the sealing panel is arranged to be clung to the outer circular surface of the movable connecting ring, and the end part of the sealing lip is clung to the surface of the sealing panel for sealing.
Two sealing lips are arranged on the inner circular surface of the static sealing ring, the two sealing lips are opposite in inclination direction and are of a splayed structure.
Compared with the prior art, the utility model provides a water conservancy diversion type contact labyrinth seals device has following advantage: 1. the utility model discloses simple structure, through the cooperation of alternating between rotating ring and the quiet ring, the cooperation between the water conservancy diversion ring that the cutoff ring that sets up and rotating ring set up on the quiet ring has avoided the grease to leak, in addition seal between seal lip and the rotating ring to realize good sealed effect. 2. The utility model discloses be provided with the guiding gutter on the well water conservancy diversion ring, when the grease got into to the labyrinth seal intracavity, the grease that gets into this region can flow back to the seal chamber under the combined action of flinger and guiding gutter, realizes the effect of oil return. 3. The utility model provides a sealing panel is hugging closely the outer disc of moving the go-between, has further strengthened sealed effect, has also reduced seal lip and moving the wearing and tearing of go-between in use in addition, increase of service life.
Drawings
Fig. 1 is a schematic view of an overall structure of a flow-guiding contact labyrinth seal device provided in example 1;
in the figure: 1-static connecting ring, 2-dynamic supporting ring, 3-sealing lip, 4-dynamic sealing ring, 5-cutoff ring, 6-guide ring, 7-static supporting ring, 8-sealing cavity, 9-static sealing ring, 10-dynamic connecting ring, 11-rotating shaft, 12-bolt, 13-oil slinger, 14-sealing panel, 15-guide groove, 16-positioning step, 17-pressing plate, 18-axial support and 19-radial support.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The utility model provides a water conservancy diversion type contact labyrinth seal device is shown in figure 1, installs between axis of rotation 11 and bearing frame, the axis of rotation is installed in the bearing frame and is stretched out from the bearing frame, the space between the bearing frame inside and the axis of rotation is sealed chamber 8, water conservancy diversion type contact labyrinth seal device include rotating ring and quiet ring, wherein the cross-section of rotating ring is anti-C style of calligraphy, including along axial movable connecting ring 10 and movable sealing ring 4 and lie in curved movable supporting ring 2 between the two, the three connects formula structure as an organic whole, the movable connecting ring cover is established on the axis of rotation and is connected fixedly through fixed bolster and axis of rotation; the cross-section of the fixed support is L-shaped, and comprises an axial support 18 which is axially arranged and sleeved on the rotating shaft and a radial support 19 which is radially arranged and attached to the movable support ring, the axial support and the movable support ring are connected into a whole, the axial support is fixedly connected with the rotating shaft through a bolt, and the radial support and the movable support ring are fixedly connected through a bolt.
The section of the static ring is C-shaped, the static ring comprises a static connecting ring 1 and a static sealing ring 9 along the axial direction, and an arc-shaped static supporting ring 7 positioned between the static connecting ring and the static sealing ring, the static connecting ring 1 and the static sealing ring are connected into an integral structure, a positioning step 16 is arranged at the end part of the static connecting ring along the radial direction, and the positioning step is attached to the side wall of the bearing seat and is fixed with the bearing seat through a bolt and a pressing plate 17.
The movable ring and the static ring are alternately inserted, the movable sealing ring is positioned between the static connecting ring and the static sealing ring, the static sealing ring is positioned between the movable connecting ring and the movable sealing ring, the end part of the movable sealing ring is provided with a flow guide ring 6 inclined towards the direction of the static sealing ring, the flow guide ring is provided with a flow guide groove 15, when grease enters the labyrinth sealing cavity, the grease entering the region can flow back to the sealing cavity under the combined action of the oil thrower ring and the flow guide groove, and the oil return effect is realized. The end part of the static sealing ring is provided with a closure ring 5 which inclines towards the direction of the dynamic sealing ring, and a zigzag labyrinth sealing cavity is formed among the dynamic ring, the flow guide ring, the static ring and the closure ring; more than one inclined sealing lip 3 is arranged on the inner circular surface of the static sealing ring, and the sealing lip is tightly contacted and sealed with the outer circular surface of the dynamic connecting ring. In this embodiment, the inner circular surface of the static sealing ring is provided with two sealing lips, and the two sealing lips have opposite inclination directions and are in a splayed structure. The movable ring is provided with a sealing panel 14, the sealing panel is arranged to be clung to the outer circular surface of the movable connecting ring, and the end part of the sealing lip is clung to the surface of the sealing panel for sealing. The sealing panel further enhances the sealing effect, reduces the abrasion of the sealing lip and the movable connecting ring in use and prolongs the service life.
Claims (4)
1. The utility model provides a water conservancy diversion type contact labyrinth seal device, installs between axis of rotation and bearing frame, the axis of rotation is installed in the bearing frame and is stretched out from the bearing frame, and the space between the inside and axis of rotation of bearing frame is sealed chamber, its characterized in that: the diversion-type contact labyrinth sealing device comprises a movable ring and a stationary ring, wherein the section of the movable ring is in an inverted C shape, the movable ring and the stationary ring are axially connected into an integral structure, and the movable ring and the stationary ring are positioned between the movable ring and the stationary ring; the section of the static ring is C-shaped, the static ring comprises a static connecting ring and a static sealing ring along the axial direction, and an arc-shaped static supporting ring positioned between the static connecting ring and the static sealing ring, the static connecting ring and the static sealing ring are connected into an integral structure, the end part of the static connecting ring is provided with a positioning step along the radial direction, and the positioning step is attached to the side wall of the bearing seat and fixed with the bearing seat through a bolt and a pressing plate;
the movable ring and the static ring are alternately inserted, the movable sealing ring is positioned between the static connecting ring and the static sealing ring, the static sealing ring is positioned between the movable connecting ring and the movable sealing ring, the end part of the movable sealing ring is provided with a flow guide ring which inclines towards the static sealing ring, the flow guide ring is provided with a flow guide groove, the end part of the static sealing ring is provided with a cut-off ring which inclines towards the movable sealing ring, and the movable ring, the flow guide ring, the static ring and the cut-off ring form a zigzag labyrinth sealing cavity together; the inner circular surface of the static sealing ring is provided with more than one inclined sealing lip, the sealing lip is tightly contacted and sealed with the outer circular surface of the dynamic connecting ring, and the outer circular surface of the dynamic sealing ring is radially provided with more than one flinger.
2. Flow-inducing contact labyrinth seal according to claim 1, characterized in that: the cross-section of the fixed support is L-shaped, and comprises an axial support which is axially arranged and sleeved on the rotating shaft and a radial support which is radially arranged and attached to the movable support ring, the axial support and the radial support are connected into a whole, the axial support is fixedly connected with the rotating shaft through a bolt, and the radial support and the movable support ring are fixedly connected through a bolt.
3. Flow-inducing contact labyrinth seal according to claim 1, characterized in that: the movable ring is internally provided with a sealing panel, the sealing panel is arranged to be clung to the outer circular surface of the movable connecting ring, and the end part of the sealing lip is clung to the surface of the sealing panel for sealing.
4. Flow-inducing contact labyrinth seal according to claim 1, characterized in that: two sealing lips are arranged on the inner circular surface of the static sealing ring, the two sealing lips are opposite in inclination direction and are of a splayed structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023211811.6U CN214305281U (en) | 2020-12-28 | 2020-12-28 | Flow guide type contact labyrinth sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023211811.6U CN214305281U (en) | 2020-12-28 | 2020-12-28 | Flow guide type contact labyrinth sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214305281U true CN214305281U (en) | 2021-09-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023211811.6U Active CN214305281U (en) | 2020-12-28 | 2020-12-28 | Flow guide type contact labyrinth sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214305281U (en) |
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2020
- 2020-12-28 CN CN202023211811.6U patent/CN214305281U/en active Active
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| TR01 | Transfer of patent right |
Effective date of registration: 20221009 Address after: 2nd Floor, Building 6, Building 6, No. 11 Gaoxin East Road, Jianghai District, Jiangmen City, Guangdong Province, 529000 Self-edited 02 Patentee after: Jiangmen Xinhui Special Seal Technology Co.,Ltd. Address before: No.3 and No.4, 2nd floor, Chuangye building, Wuhan University Science Park, Donghu Development Zone, Wuhan City, Hubei Province, 430000 Patentee before: WUHAN XINZHI SEALING TECHNOLOGY CO.,LTD. |