CN110206889B - Large-scale transmission slip ring based on end face dynamic seal - Google Patents
Large-scale transmission slip ring based on end face dynamic seal Download PDFInfo
- Publication number
- CN110206889B CN110206889B CN201910439401.XA CN201910439401A CN110206889B CN 110206889 B CN110206889 B CN 110206889B CN 201910439401 A CN201910439401 A CN 201910439401A CN 110206889 B CN110206889 B CN 110206889B
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- ring
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 13
- 238000007789 sealing Methods 0.000 claims abstract description 115
- 230000003068 static effect Effects 0.000 claims description 26
- 230000006835 compression Effects 0.000 claims description 23
- 238000007906 compression Methods 0.000 claims description 23
- 239000012535 impurity Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 3
- 238000011900 installation process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000004579 marble Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
- F16C33/7806—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for spherical roller bearings
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
- F16C33/782—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Sealing Devices (AREA)
Abstract
The invention discloses a large-scale power transmission slip ring based on end face dynamic seal, wherein a first bearing sealing cover is arranged on a first bearing inner ring, a first labyrinth seat is arranged on the first bearing sealing cover, and a first labyrinth cover is correspondingly arranged on the dynamic cover; a first dynamic sealing element and a second dynamic sealing element are arranged between the relative sliding surfaces of the first bearing outer ring and the first bearing sealing cover, and the first dynamic sealing element and the second dynamic sealing element are in pressure connection with the first bearing sealing cover; a third bearing sealing cover is arranged on the outer ring of the second bearing, the third bearing sealing cover is fixed with the outer cylinder, a second bearing sealing cover is arranged on the inner ring of the second bearing, the second bearing sealing cover is fixed with the movable cover, a second labyrinth seat is arranged on the outer cylinder, and a second labyrinth cover is correspondingly arranged on the movable cover; and a third dynamic sealing piece and a fourth dynamic sealing piece are arranged between the relative sliding surfaces of the second bearing inner ring and the third bearing sealing cover, and are in pressure connection with the third bearing sealing cover. The invention ensures the reliability of the dynamic seal and the convenience of the installation, maintenance and disassembly of the dynamic seal.
Description
Technical Field
The invention relates to the technical field of electric slip rings, in particular to a large-scale electric slip ring based on end face dynamic seal.
Background
The existing electric slip ring dynamic seal generally adopts a framework oil seal type in an axial installation mode, namely an oil seal lip opening is along the axial direction. The dynamic seal type is suitable for being used in a small size range, has good sealing effect and is difficult to install. When the diameter of the oil seal reaches more than 100mm, the movable sealing ring is extremely easy to be damaged in the installation process, so that the sealing failure is caused.
Chinese patent CN 207777426U (application day 2017.12.29) discloses a dynamic sealing device applied to the field of large-scale power transmission slip rings, the diameter of the device is not less than 600mm, in order to avoid the problem of "breathing" in the slip ring due to pressure fluctuation, the dynamic sealing element is a pair of positively and negatively installed dynamic sealing components, wherein the positively installed dynamic sealing element is easy to cause lip damage in the installation process because the lip opening is downward; when the reverse-installed dynamic sealing piece is installed, the thrust is required to be applied to the internal energy storage spring, and when the thrust is overlarge, the spring is easy to deform plastically, and the elasticity is lost. Such a dynamic sealing device therefore requires very high installation requirements for the dynamic seal in practice and is very operation-unfriendly. Meanwhile, after the dynamic sealing element is installed, the use condition is inconvenient to observe, and later replacement is performed.
The end face dynamic seal can perfectly solve all the difficulties. However, because the large-size relative movement end face is seriously affected by overturning, the compression amount of the end face moving seal piece in all circumferential directions is inconsistent, and the sealing performance and the service life of the moving seal piece are affected, the end face moving seal is rarely applied to the large-size engineering field.
Disclosure of Invention
The invention aims to provide a large-scale power transmission slip ring based on end face dynamic seal.
The technical solution for realizing the purpose of the invention is as follows: the utility model provides a large-scale transmission slip ring based on terminal surface moves sealed, includes movable cover, center base, first bearing, second bearing and urceolus, first bearing inner circle is installed on center base, and first bearing outer lane is installed on movable cover, second bearing inner circle is installed on movable cover, and the outer lane is installed on the urceolus. A first bearing sealing cover is arranged on the first bearing inner ring, a first labyrinth seat is arranged on the first bearing sealing cover, a first labyrinth cover is correspondingly arranged on the movable cover, and the first labyrinth seat and the first labyrinth cover form an impurity protection structure between the movable cover and the central base; a first dynamic sealing piece and a second dynamic sealing piece are arranged between the relative sliding surfaces of the first bearing outer ring and the first bearing sealing cover, and the first dynamic sealing piece, the second dynamic sealing piece and the first bearing sealing cover are in pressure connection, so that dynamic sealing of the relative moving surface of the dynamic cover and the center base is realized; a third bearing sealing cover is arranged on the outer ring of the second bearing, the third bearing sealing cover is fixed with the outer cylinder, a second bearing sealing cover is arranged on the inner ring of the second bearing, the second bearing sealing cover is fixed with the movable cover, a second labyrinth seat is arranged on the outer cylinder, a second labyrinth cover is correspondingly arranged on the movable cover, and the second labyrinth seat and the second labyrinth cover form an impurity protection structure between the movable cover and the outer cylinder; and a third dynamic sealing piece and a fourth dynamic sealing piece are arranged between the relative sliding surfaces of the second bearing inner ring and the third bearing sealing cover, and are in pressure connection with the third bearing sealing cover, so that dynamic sealing of the relative moving surfaces of the dynamic cover and the outer cylinder is realized.
Compared with the prior art, the invention has the remarkable advantages that: the invention not only can ensure the reliability of the dynamic seal, but also can ensure the convenience of the installation, maintenance and disassembly operation of the dynamic seal.
Drawings
Fig. 1 is a schematic structural diagram of a large-scale power transmission slip ring dynamic seal structure of the present invention.
Fig. 2 is an enlarged view of a portion of the large power transmission slip ring dynamic seal structure of the present invention.
Detailed Description
The present invention will be further described with reference to the drawings and the specific embodiments.
As shown in fig. 1-2, the large-scale power transmission slip ring comprises a movable cover 1, a central base 2, a first bearing 3, a supporting frame 7, a second bearing 8, an outer cylinder 11, an outer ring 29, an inner ring 30 and a slewing bearing 31, wherein the inner ring of the first bearing 3 is arranged on the central base 2, and the outer ring of the first bearing 3 is arranged on the movable cover 1; the inner ring of the second bearing 8 is arranged on the movable cover 1, and the outer ring is arranged on the outer cylinder 11. The top of the supporting frame 7 is connected with the inner ring of the second bearing 8, the top of the outer ring 29 is connected with the movable cover 1, the inner ring 30 is installed on the center base 2, the outer ring of the slewing bearing 31 is installed at the bottom of the center base 2, and the inner ring of the slewing bearing 31 is connected with the outer ring 29 and the supporting frame 7.
In order to take account of the dynamic sealing effect and the convenience of installation, overhaul and disassembly of a dynamic sealing piece, the invention carries out the dynamic sealing design on a large-scale electric slip ring based on end face dynamic sealing, on the basis of the original structure, a first bearing sealing cover 4 is arranged on the inner ring of a first bearing 3, a first labyrinth seat 5 is arranged on the first bearing sealing cover 4, a first labyrinth cover 6 is correspondingly arranged on the dynamic cover 1, the first labyrinth seat 5 and the first labyrinth cover 6 form an impurity protection structure between the dynamic cover 1 and a central base 2, and external water vapor impurities are primarily shielded from entering the slip ring; a first dynamic seal piece 25 and a second dynamic seal piece 26 are arranged between the outer ring of the first bearing 3 and the opposite sliding surface of the first bearing sealing cover 4, and the first dynamic seal piece 25 and the second dynamic seal piece 26 are in pressure connection with the first bearing sealing cover 4 to realize dynamic seal of the opposite moving surface of the dynamic cover 1 and the center base 2; a third bearing sealing cover 10 is arranged on the outer ring of the second bearing 8, the third bearing sealing cover 10 is fixed with the outer cylinder 11, a second bearing sealing cover 9 is arranged on the inner ring of the second bearing 8, the second bearing sealing cover 9 is fixed with the movable cover 1, a second labyrinth seat 12 is arranged on the outer cylinder 11, a first labyrinth cover 6 is correspondingly arranged on the movable cover 1, the second labyrinth seat 12 and the second labyrinth cover 13 form an impurity protection structure between the movable cover 1 and the outer cylinder 11, and external vapor impurities are primarily shielded from entering the slip ring; a third dynamic seal 27 and a fourth dynamic seal 28 are arranged between the inner ring of the second bearing 8 and the relative sliding surface of the third bearing sealing cover 10, and the third dynamic seal 27, the fourth dynamic seal 28 and the third bearing sealing cover 10 are in pressure connection to realize dynamic seal of the relative moving surface of the dynamic cover 1 and the outer cylinder 11.
The dynamic seal is the most critical component, and the structure and the placement mode directly affect the effect of the dynamic seal. A framework oil seal structure may be employed with respect to the structure. Regarding the placement positions of the first seal member 25 and the second seal member 26, the lip openings of the first seal member 25 can be directed inward, so that leakage of insulating oil inside the slip ring can be better prevented, and the lip openings of the second seal member 26 can be directed outward, so that external air and moisture of the slip ring can be better prevented from entering the slip ring. With respect to the placement of the third seal 27 and the fourth seal 28, the lip openings of the third seal 27 are directed inward, thereby better preventing the outside air and moisture of the slip ring from entering the slip ring, and the lip openings of the fourth seal 28 are directed outward, thereby better preventing the leakage of insulating oil inside the slip ring.
In order to improve the overall tightness of the slip ring, some embodiments also consider the tightness of the slip ring, and add first to eleventh static sealing elements 14 to 24, wherein the first static sealing element 14 is arranged on the compression joint surface of the center base 2 and the first labyrinth seat 5, the second static sealing element 15 is arranged on the compression joint surface of the center base 2 and the inner ring of the first bearing 3, the third static sealing element 16 is arranged on the compression joint surface of the inner ring of the first bearing 3 and the first bearing sealing cover 4, and the fourth static sealing element 17 is arranged on the compression joint surface of the outer ring of the first bearing 3 and the movable cover 1; the fifth static sealing element 18 is arranged on the compression joint surface of the movable cover 1 and the first labyrinth cover 6; the sixth static seal 19 is arranged on the compression joint surface of the inner ring of the second bearing 8 and the second bearing sealing cover 9; the seventh static sealing piece 20 is arranged on the compression joint surface of the second bearing sealing cover 9 and the movable cover 1; the eighth static seal piece 21 is arranged on the compression joint surface of the movable cover 1 and the second labyrinth cover 13; the ninth static seal member 22 is arranged on the pressure contact surface of the outer cylinder 11 and the second labyrinth seat 12; the tenth static seal piece 23 is arranged on the compression joint surface of the outer ring of the second bearing 8 and the third bearing sealing cover 10; the eleventh static seal 24 is provided on the pressure contact surface of the third bearing seal cap 10 and the outer cylinder 11. For these static seals, an O-ring seal configuration may be used, or may be tuned to the performance requirements.
Working principle: in the sliding ring rotating process, the movable cover 1 drives the outer ring of the first bearing 3 and the inner ring of the second bearing 8 to rotate, and the movable cover and the first bearing sealing cover 4 and the third bearing sealing cover 10 realize relative sliding, and the sealing problem of the relative moving surface of the sliding ring in the rotating process is realized through the first to fourth movable sealing pieces 25-28.
The invention overcomes the technical prejudice that the end face seal can not well solve the problem of end jump and overturning of the sealing face in the prior art, and applies the end face seal type to the large-size engineering practice field for the first time, and is particularly applied to the field of large-scale power transmission slip rings. By adopting the end face dynamic seal mode, the dynamic seal piece is directly placed in the mounting channel, the mounting is convenient, the difficult problem that the dynamic seal piece is easy to be damaged directly in the mounting process in the traditional seal mode (radial seal) is avoided, and the later maintenance and replacement are also easy.
Meanwhile, the dynamic sealing element is directly arranged on the bearing, and the axial clearance of the bearing is regulated by virtue of the marble, so that the offset of the inner ring and the outer ring of the bearing in the axial direction can be very small, the consistency of the compression amount of the dynamic sealing element on all parts of the circumference can be ensured by virtue of the high rotation precision of the bearing, the uniform compression of the dynamic sealing element is realized, and the sealing reliability and the wear uniformity of the dynamic sealing element are ensured.
Claims (5)
1. The utility model provides a large-scale transmission slip ring based on terminal surface dynamic seal, includes movable cover (1), center base (2), first bearing (3), second bearing (8) and urceolus (11), first bearing (3) inner circle is installed on center base (2), and first bearing (3) outer lane is installed on movable cover (1), second bearing (8) inner circle is installed on movable cover (1), and the outer lane is installed on urceolus (11), a serial communication port, set up first bearing seal lid (4) on first bearing (3) inner circle, set up first labyrinth seat (5) on first bearing seal lid (4), correspond on movable cover (1) and set up first labyrinth cover (6), first labyrinth seat (5) and first labyrinth cover (6) constitute the impurity protection architecture between movable cover (1) and center base (2); a first dynamic seal (25) and a second dynamic seal (26) are arranged between the outer ring of the first bearing (3) and the opposite sliding surface of the first bearing sealing cover (4), and the first dynamic seal (25) and the second dynamic seal (26) are in pressure connection with the first bearing sealing cover (4) to realize dynamic seal of the opposite moving surface of the dynamic cover (1) and the central base (2); a third bearing sealing cover (10) is arranged on the outer ring of the second bearing (8), the third bearing sealing cover (10) is fixed with the outer cylinder (11), a second bearing sealing cover (9) is arranged on the inner ring of the second bearing (8), the second bearing sealing cover (9) is fixed with the movable cover (1), a second labyrinth seat (12) is arranged on the outer cylinder (11), a second labyrinth cover (13) is correspondingly arranged on the movable cover (1), and the second labyrinth seat (12) and the second labyrinth cover (13) form an impurity protection structure between the movable cover (1) and the outer cylinder (11); a third dynamic seal (27) and a fourth dynamic seal (28) are arranged between the inner ring of the second bearing (8) and the relative sliding surface of the third bearing sealing cover (10), and the third dynamic seal (27), the fourth dynamic seal (28) and the third bearing sealing cover (10) are in pressure connection to realize dynamic seal of the relative moving surface of the dynamic cover (1) and the outer cylinder (11);
the novel rotary bearing comprises a bearing body and is characterized by further comprising a support frame (7), an outer ring (29), an inner ring (30) and a rotary support (31), wherein the top of the support frame (7) is connected with the inner ring of the second bearing body (8), the top of the outer ring (29) is connected with the movable cover (1), the inner ring (30) is arranged on a central base (2), the outer ring of the rotary support (31) is arranged at the bottom of the central base (2), and the inner ring of the rotary support (31) is connected with the outer ring (29) and the support frame (7);
The novel bearing further comprises first to eleventh static sealing elements (14 to 24), wherein the first static sealing element (14) is arranged on the compression joint surface of the center base (2) and the first labyrinth seat (5), the second static sealing element (15) is arranged on the compression joint surface of the center base (2) and the inner ring of the first bearing (3), the third static sealing element (16) is arranged on the compression joint surface of the inner ring of the first bearing (3) and the first bearing sealing cover (4), and the fourth static sealing element (17) is arranged on the compression joint surface of the outer ring of the first bearing (3) and the movable cover (1); the fifth static sealing element (18) is arranged on the compression joint surface of the movable cover (1) and the first labyrinth cover (6); the sixth static sealing piece (19) is arranged on the compression joint surface of the inner ring of the second bearing (8) and the second bearing sealing cover (9); the seventh static sealing piece (20) is arranged on the compression joint surface of the second bearing sealing cover (9) and the movable cover (1); the eighth static sealing piece (21) is arranged on the compression joint surface of the movable cover (1) and the second labyrinth cover (13); the ninth static sealing piece (22) is arranged on the compression joint surface of the outer cylinder (11) and the second labyrinth seat (12); the tenth static sealing piece (23) is arranged on the compression joint surface of the outer ring of the second bearing (8) and the third bearing sealing cover (10); the eleventh static sealing element (24) is arranged on the compression joint surface of the third bearing sealing cover (10) and the outer cylinder (11);
In the sliding ring rotating process, the movable cover (1) drives the outer ring of the first bearing (3) and the inner ring of the second bearing (8) to rotate, the sliding is realized relative to the first bearing sealing cover (4) and the third bearing sealing cover (10), and the sealing problem of the sliding ring on the relative movement surface in the rotating process is realized through the first to fourth movable sealing pieces (25-28).
2. The large-scale power transmission slip ring based on end face dynamic sealing according to claim 1, wherein the first to fourth dynamic sealing elements (25 to 28) adopt a framework oil seal structure.
3. The large power slip ring based on end face dynamic sealing of claim 1, wherein the lip opening of the first dynamic seal (25) is facing inward and the lip opening of the second dynamic seal (26) is facing outward.
4. The face dynamic seal based large power slip ring of claim 1, wherein third dynamic seal (27) lip opening is inward and fourth dynamic seal (28) lip opening is outward.
5. The large-scale power transmission slip ring based on end face dynamic sealing according to claim 1, wherein the first to eleventh static sealing elements (14 to 24) adopt an O-shaped sealing ring structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910439401.XA CN110206889B (en) | 2019-05-24 | 2019-05-24 | Large-scale transmission slip ring based on end face dynamic seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910439401.XA CN110206889B (en) | 2019-05-24 | 2019-05-24 | Large-scale transmission slip ring based on end face dynamic seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110206889A CN110206889A (en) | 2019-09-06 |
| CN110206889B true CN110206889B (en) | 2024-06-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910439401.XA Active CN110206889B (en) | 2019-05-24 | 2019-05-24 | Large-scale transmission slip ring based on end face dynamic seal |
Country Status (1)
| Country | Link |
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| CN (1) | CN110206889B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114382883B (en) * | 2022-01-17 | 2023-01-17 | 扬州海通电子科技有限公司 | Electric slip ring modular sealing assembly, testing device and testing method |
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| US4566744A (en) * | 1983-06-28 | 1986-01-28 | Skf Industrial Trading & Development Company B.V. | Current collector for rotating shaft |
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| CN109227408A (en) * | 2018-10-15 | 2019-01-18 | 江苏缪斯环保科技有限公司 | A kind of impeller head spindle drum sealing device |
| CN210290749U (en) * | 2019-05-24 | 2020-04-10 | 扬州海通电子科技有限公司 | Large-scale transmission slip ring based on end face dynamic seal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110206889A (en) | 2019-09-06 |
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