CN214425087U - Floating oil seal structure of steam turbine bearing - Google Patents
Floating oil seal structure of steam turbine bearing Download PDFInfo
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- CN214425087U CN214425087U CN202022905418.0U CN202022905418U CN214425087U CN 214425087 U CN214425087 U CN 214425087U CN 202022905418 U CN202022905418 U CN 202022905418U CN 214425087 U CN214425087 U CN 214425087U
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Abstract
The utility model relates to a turbine bearing floating oil seal structure, it includes oil seal ring, oil blanket ring body, and oil seal ring and oil blanket ring body are the ring, and oil seal ring includes: go up semi-ring, lower semi-ring, go up the semi-ring and be provided with the connecting bolt who is used for fixing between the semi-ring down, the top of going up the semi-ring is provided with the groove of floating, and the inside in groove of floating is provided with the inspection hole, and the inside of lower semi-ring is provided with the oil gallery, and the oil blanket ring body includes: the oil seal ring comprises an upper ring body and a lower ring body, wherein bolt holes for fixing are formed in the edge of the oil seal ring body, an anti-rotation pin is arranged on the inner side of the oil seal ring body, and an oil return groove is formed in the middle of the lower ring body; the utility model has the advantages of simple structure, convenient use, safety and durability.
Description
Technical Field
The utility model belongs to the sealing device field, concretely relates to turbine bearing floating oil seal structure.
Background
At present, a turbine bearing oil seal of a thermal power plant generally adopts a fixed tooth type structure, copper teeth are easy to rub and touch in the operation process, so that the vibration of a bearing is increased, and simultaneously, a large amount of bearing lubricating oil overflows due to the abrasion of the copper teeth, so that hidden danger is brought to the safe operation of a unit; therefore, it is very necessary to provide a floating oil seal structure for turbine bearings, which has simple structure, convenient use, safety and durability.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defects of the prior art and providing a floating oil seal structure of a turbine bearing, which has simple structure, convenient use, safety and durability.
The purpose of the utility model is realized like this: the utility model provides a turbine bearing floating oil seal structure, it includes oil seal ring, oil blanket ring body, oil seal ring and oil blanket ring body be the ring, oil seal ring include: last semi-ring, lower semi-ring, last semi-ring and be provided with the connecting bolt who is used for fixing down between the semi-ring, the top of last semi-ring be provided with the floating groove, the inside in floating groove be provided with the inspection hole, the inside of lower semi-ring be provided with the oil gallery, the oil blanket ring body include: go up ring body, lower ring body, the edge of oil blanket ring body be provided with the bolt hole that is used for fixing, the inboard of oil blanket ring body be provided with the anti-rotation pin, the middle part of lower ring body be provided with the oil gallery.
Preferably, the oil seal ring is 20 # steel.
Preferably, the oil seal ring is installed inside the oil seal ring body, and the oil seal ring body adopts an anti-rotation pin to fix the oil seal ring.
Preferably, the oil seal ring and the oil return hole of the oil seal ring body are correspondingly installed with the oil return groove.
Preferably, the number of the connecting bolts is four.
Preferably, the bolt holes are eighteen in total, and the bolt holes are uniformly distributed at equal angles on the circumference.
Preferably, the oil seal ring is provided with a groove on the inner side.
The utility model has the advantages that: the utility model adopts the matching of the oil seal ring and the oil seal ring body, the floating oil seal structure of the turbine bearing rotates at high speed through the main shaft of the turbine, and a stable oil film is formed at the inner side of the oil seal ring, thereby improving the operation stability and simultaneously preventing the bearing lubricating oil from overflowing; the utility model has the advantages of simple structure, convenient use, safety and durability.
Drawings
Fig. 1 is an elevation view of an oil seal ring of a floating oil seal structure of a turbine bearing of the present invention.
Fig. 2 is a side view of the oil seal ring of the floating oil seal structure of the turbine bearing of the present invention.
Fig. 3 is the utility model discloses a turbine bearing floating oil seal structure's oil blanket ring body elevation.
Fig. 4 is the utility model discloses a steam turbine bearing floating oil seal structure's oil blanket ring body cross-sectional view.
In the figure: 1. the oil seal ring comprises an oil seal ring 2, an oil seal ring body 3, an upper semi-ring 4, a lower semi-ring 5, a connecting bolt 6, a floating groove 7, an inspection hole 8, an oil return hole 9, an upper ring body 10, a lower ring body 11, a bolt hole 12, an anti-rotation pin 13, an oil return groove 14 and a channel.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Example 1
As shown in fig. 1-4, a floating oil seal structure for a turbine bearing comprises; it includes oil seal ring 2, oil blanket ring body 2, oil seal ring 1 be the ring with oil blanket ring body 2, oil seal ring 1 include: last semi-ring 3, lower semi-ring 4, last semi-ring 3 and lower semi-ring 4 between be provided with and be used for fixed connecting bolt 5, the top of last semi-ring 3 be provided with floating groove 6, floating groove 6 inside be provided with inspection hole 7, lower semi-ring 4 inside be provided with oil gallery 8, oil blanket ring body 2 include: go up ring body 9, lower ring body 10, the edge of oil blanket ring body 2 be provided with the bolt hole 11 that is used for fixing, the inboard of oil blanket ring body 2 be provided with rotation prevention pin 12, the middle part of lower ring body 10 be provided with oil return tank 13.
When the utility model is used, the upper half ring 3 and the lower half ring 4 of the oil seal ring 1 are arranged on the main shaft of the steam turbine through four connecting bolts 5 and keep a certain clearance with the main shaft, the inner side of the oil seal ring body 2 is provided with a channel 14, the oil seal ring 1 and the oil return hole 8 on the oil seal ring body 2 are correspondingly matched and arranged with the oil return groove 13, the oil seal ring body 2 is fixed on the vertical surfaces of two sides of the bearing body through the bolt hole 11 at the outer side of the oil seal ring body 2, a certain clearance is radially reserved between the oil seal ring body 2 and the oil seal ring 1, along with the high-speed rotation of the main shaft of the steam turbine, lubricating oil forms a stable oil film between the oil seal ring 1 and the main shaft to form sealing, a large amount of bearing lubricating oil is prevented from overflowing, the oil at the oil seal ring passes through the oil return hole 8 on the oil seal ring, the oil return groove 13 on the oil seal ring body 2 is collected and flows to the oil return pipeline of the bearing, in order to prevent the oil seal ring 1 from rotating along with the main shaft, the top of the oil seal ring 1 is provided with a floating groove 6, the oil blanket ring body 2 corresponds the position and has set up the anti-rotating pin 12, the floating groove 6 degree of depth guarantees the 2 inboard unsteady in-process behind the formation oil film of oil seal ring, the bottom does not touch the anti-rotating pin 12, the anti-rotating pin 12 only prevents that oil seal ring 1 from rotating along with the steam turbine main shaft along the hoop, accessible inspection hole mentions oil seal ring 1 after oil seal ring 1 and the installation of oil blanket ring body 2, observe whether the oil blanket can normally mention, in order to guarantee that oil seal ring does not have the jam, can normally float at the unit operation in-process.
The utility model adopts the oil seal ring 1 and the oil seal ring body 2 to be installed on the main shaft of the steam turbine in a matching way, the floating oil seal structure of the steam turbine bearing rotates at high speed through the main shaft of the steam turbine, and a stable oil film is formed on the inner side of the oil seal ring 1, thereby improving the operation stability and simultaneously preventing the bearing lubricating oil from overflowing; the utility model has the advantages of simple structure, convenient use, safety and durability.
Example 2
As shown in fig. 1-4, a floating oil seal structure for a turbine bearing comprises; it includes oil seal ring 2, oil blanket ring body 3, oil seal ring 1 be the ring with oil blanket ring body 2, oil seal ring 1 include: last semi-ring 3, lower semi-ring 4, last semi-ring 3 and lower semi-ring 4 between be provided with and be used for fixed connecting bolt 5, the top of last semi-ring 3 be provided with floating groove 6, floating groove 6 inside be provided with inspection hole 7, lower semi-ring 4 inside be provided with oil gallery 8, oil blanket ring body 2 include: go up ring body 9, lower ring body 10, the edge of oil blanket ring body 2 be provided with the bolt hole 11 that is used for fixing, the inboard of oil blanket ring body 2 be provided with rotation prevention pin 12, the middle part of lower ring body 10 be provided with oil return tank 13.
Preferably, the oil seal ring 1 is 20 # steel.
Preferably, the oil seal ring 1 is installed inside the oil seal ring body 2, and the oil seal ring body 2 adopts the anti-rotation pin 12 to fix the oil seal ring 1.
Preferably, the oil seal ring 1 and the oil seal ring body 2 are correspondingly installed with the oil return hole 8 and the oil return groove 13.
Preferably, the number of the connecting bolts 5 is four.
Preferably, the bolt holes 11 are eighteen, and the bolt holes 11 are evenly distributed at equal angles on the circumference.
Preferably, the oil seal ring body 2 is provided with a groove 14 towards the inner side, and the groove 14 is arranged on the inner side to facilitate the installation of the oil seal ring 14.
When the utility model is used, the upper half ring 3 and the lower half ring 4 of the oil seal ring 1 are arranged on the main shaft of the steam turbine through four connecting bolts 5 and keep a certain clearance with the main shaft, the inner side of the oil seal ring body 2 is provided with a channel 14, the oil seal ring 1 and the oil return hole 8 on the oil seal ring body 2 are correspondingly matched and arranged with the oil return groove 13, the oil seal ring body 2 is fixed on the vertical surfaces of two sides of the bearing body through the bolt hole 11 at the outer side of the oil seal ring body 2, a certain clearance is radially reserved between the oil seal ring body 2 and the oil seal ring 1, along with the high-speed rotation of the main shaft of the steam turbine, lubricating oil forms a stable oil film between the oil seal ring 1 and the main shaft to form sealing, a large amount of bearing lubricating oil is prevented from overflowing, the oil at the oil seal ring passes through the oil return hole 8 on the oil seal ring, the oil return groove 13 on the oil seal ring body 2 is collected and flows to the oil return pipeline of the bearing, in order to prevent the oil seal ring 1 from rotating along with the main shaft, the top of the oil seal ring 1 is provided with a floating groove 6, the oil blanket ring body 2 corresponds the position and has set up the anti-rotating pin 12, the floating groove 6 degree of depth guarantees the 2 inboard unsteady in-process behind the formation oil film of oil seal ring, the bottom does not touch the anti-rotating pin 12, the anti-rotating pin 12 only prevents that oil seal ring 1 from rotating along with the steam turbine main shaft along the hoop, accessible inspection hole mentions oil seal ring 1 after oil seal ring 1 and the installation of oil blanket ring body 2, observe whether the oil blanket can normally mention, in order to guarantee that oil seal ring does not have the jam, can normally float at the unit operation in-process.
The utility model adopts the oil seal ring 1 and the oil seal ring body 2 to be installed on the main shaft of the steam turbine in a matching way, the floating oil seal structure of the steam turbine bearing rotates at high speed through the main shaft of the steam turbine, and a stable oil film is formed on the inner side of the oil seal ring 1, thereby improving the operation stability and simultaneously preventing the bearing lubricating oil from overflowing; the utility model has the advantages of simple structure, convenient use, safety and durability.
Claims (7)
1. The utility model provides a turbine bearing floating oil seal structure, it includes oil seal ring, oil seal ring body, its characterized in that: the oil seal ring and the oil seal ring body are circular rings, and the oil seal ring comprises: last semi-ring, lower semi-ring, last semi-ring and be provided with the connecting bolt who is used for fixing down between the semi-ring, the top of last semi-ring be provided with the floating groove, the inside in floating groove be provided with the inspection hole, the inside of lower semi-ring be provided with the oil gallery, the oil blanket ring body include: go up ring body, lower ring body, the edge of oil blanket ring body be provided with the bolt hole that is used for fixing, the inboard of oil blanket ring body be provided with the anti-rotation pin, the middle part of lower ring body be provided with the oil gallery.
2. The floating oil seal structure of a steam turbine bearing according to claim 1, wherein: the oil seal ring is made of 20 # steel.
3. The floating oil seal structure of a steam turbine bearing according to claim 1, wherein: the number of the connecting bolts is four.
4. The floating oil seal structure of a steam turbine bearing according to claim 1, wherein: the total number of the bolt holes is eighteen, and the bolt holes are uniformly distributed at equal angles according to the circumference.
5. The floating oil seal structure of a steam turbine bearing according to claim 1, wherein: the oil seal ring body is provided with a channel towards the inner side.
6. The floating oil seal structure of a steam turbine bearing according to claim 1, wherein: the oil seal ring is arranged in the oil seal ring body, and the oil seal ring body adopts an anti-rotation pin to fix the oil seal ring.
7. The floating oil seal structure of a steam turbine bearing according to claim 6, wherein: the oil seal ring and the oil return hole of the oil seal ring body are correspondingly installed with the oil return groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022905418.0U CN214425087U (en) | 2020-12-07 | 2020-12-07 | Floating oil seal structure of steam turbine bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022905418.0U CN214425087U (en) | 2020-12-07 | 2020-12-07 | Floating oil seal structure of steam turbine bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214425087U true CN214425087U (en) | 2021-10-19 |
Family
ID=78050617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022905418.0U Active CN214425087U (en) | 2020-12-07 | 2020-12-07 | Floating oil seal structure of steam turbine bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214425087U (en) |
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2020
- 2020-12-07 CN CN202022905418.0U patent/CN214425087U/en active Active
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