CN212615546U - Thrust bearing structure - Google Patents
Thrust bearing structure Download PDFInfo
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- CN212615546U CN212615546U CN202021003107.9U CN202021003107U CN212615546U CN 212615546 U CN212615546 U CN 212615546U CN 202021003107 U CN202021003107 U CN 202021003107U CN 212615546 U CN212615546 U CN 212615546U
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- thrust bearing
- movable plate
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- oil
- shaft
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Abstract
The utility model is suitable for the technical field of motors, in particular to a thrust bearing structure, which comprises a shaft penetrating through a thrust bearing shell; a lower thrust bearing movable plate and a lower thrust bearing static plate are additionally arranged in the thrust bearing shell of the shaft, and lubricating oil enters the space between the lower thrust bearing static plate and the lower thrust bearing movable plate along with oil holes and oil grooves formed in the lower thrust bearing static plate in the relative motion process of the lower thrust bearing movable plate and the lower thrust bearing static plate to form a continuous oil film; in the working process, in the process of relative movement of the lower movable plate of the thrust bearing and the lower static plate of the thrust bearing, lubricating oil enters a liquid friction pair formed by jacking the lower movable plate of the thrust bearing between the lower static plate of the thrust bearing and the lower movable plate of the thrust bearing along with an oil hole and an oil groove formed in the lower static plate of the thrust bearing, and a lubricating oil film is established by utilizing the oil hole and the oil groove, so that the lubrication is improved, and the dry friction under the starting working condition is avoided.
Description
Technical Field
The utility model relates to the technical field of motors, specifically a thrust bearing structure.
Background
In the process of lifting well fluid by using an electric submersible pump in an oil field at the present stage, the failure rate of a thrust bearing is high, and great trouble is brought to the production of the oil field; the reason is as follows:
the lubrication is poor, because the submersible electric pump unit is greatly restricted by the space size, an auxiliary lubricating device or a structure cannot be additionally arranged, the lubricating oil is difficult to enter a gap of a friction pair of the thrust bearing, the lubricating quality is influenced, dry friction is caused under the starting working condition, when the electric pump is just started, the rotating speed is relatively low, the lubrication is difficult to enter the friction pair, an effective oil film cannot be formed, the dry friction is caused, and the local temperature of the friction surface is overhigh to cause gluing and galling.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a thrust bearing structure to solve the problem that the failure rate of the thrust bearing is high in the process of lifting well fluid by using an electric submersible pump in the oil field at the present stage, which brings great trouble to the production of the oil field; the lubrication is poor, because the submersible electric pump unit is greatly restricted by the space size, an auxiliary lubricating device or a structure cannot be additionally arranged, the lubricating oil is difficult to enter a gap of a friction pair of a thrust bearing, the lubricating quality is influenced, dry friction is caused under the starting working condition, when the electric pump is just started, the rotating speed is relatively low, the lubrication is difficult to enter the friction pair, an effective oil film cannot be formed, the dry friction is caused, and the problems of gluing and galling caused by overhigh local temperature of the friction surface are solved. In order to realize the purpose, the following technical scheme is specifically provided:
a thrust bearing structure comprising a shaft extending through a thrust bearing housing;
the shaft is arranged in the thrust bearing shell and is additionally provided with a thrust bearing lower movable plate and a thrust bearing lower static plate, and lubricating oil enters the thrust bearing lower static plate and the thrust bearing lower movable plate along with an oil hole and an oil groove formed in the thrust bearing lower static plate in the relative motion process to form a continuous oil film for increasing the lubrication degree.
In the working process, in the process of relative movement of the lower movable plate of the thrust bearing and the lower static plate of the thrust bearing, lubricating oil enters a liquid friction pair formed by jacking the lower movable plate of the thrust bearing between the lower static plate of the thrust bearing and the lower movable plate of the thrust bearing along with an oil hole and an oil groove formed in the lower static plate of the thrust bearing, and a lubricating oil film is established by utilizing the oil hole and the oil groove, so that the lubrication is improved, and the dry friction under the starting working condition is avoided.
The utility model discloses in: the oil grooves are distributed on the lower static plate of the thrust bearing in an array mode and communicated with the oil holes formed in the end ports, lubricating oil enters the oil grooves through the oil holes, and the oil grooves and the lower movable plate of the thrust bearing form an oil wedge angle to finish forming a continuous oil film.
The utility model discloses in: a support spiral ring is arranged on the thrust bearing shell, and a red copper gasket and a spacer bush are sequentially arranged on the support spiral ring;
the lower static plate of the thrust bearing is arranged between the red copper gasket and the spacer bush;
the lower static plate of the thrust bearing is fixedly arranged on the thrust bearing shell, and the lower movable plate of the thrust bearing is fixedly arranged on the shaft.
Further scheme: and the thrust bearing shell is detachably provided with a support spiral ring through threads.
The utility model discloses in: the shaft is positioned in the thrust bearing shell and is additionally provided with a thrust bearing upper static plate and a thrust bearing upper movable plate;
the upper static plate of the thrust bearing is arranged on the movable plate protective shell of the thrust bearing, and the lower movable plate of the thrust bearing is assembled on the movable plate protective shell of the thrust bearing.
Before starting, the shaft is influenced by upward axial force due to the elasticity of mechanical seal, and at the moment, the upper movable plate of the thrust bearing and the upper static plate of the thrust bearing are attached to form a continuous oil film which is the same as that formed on the lower movable plate of the thrust bearing and the lower static plate of the thrust bearing; after the thrust bearing is started, the axial force transmitted to the axial direction from the load is gradually increased, the shaft is moved downwards after overcoming the elasticity of the mechanical seal until the lower static plate of the thrust bearing is contacted with the lower movable plate of the thrust bearing to form a continuous oil film, and at the moment, the upper thrust bearing enters a normal working state; the lower static plate of the thrust bearing is fixedly arranged on the shell of the thrust bearing, the lower movable plate of the thrust bearing is fixedly arranged on the shaft, the shaft starts to rotate when the electric pump unit works, and relative motion is generated between the lower static plate of the thrust bearing and the lower movable plate of the thrust bearing.
Further scheme: the upper static plate of the thrust bearing and the protective shell of the movable plate of the thrust bearing are assembled by screws; and the thrust bearing lower movable plate is in interference fit with the thrust bearing movable plate protective shell.
The utility model discloses in: the shaft is provided with two semi-rings through a ring groove, and the semi-rings are sleeved with two semi-ring sleeves;
the shaft is provided with an elastic check ring through a ring groove, and the shaft is pressed with a movable plate pressing sleeve.
The utility model discloses in: and a compression sleeve and a compression spiral ring are sequentially arranged in the thrust bearing shell.
The common thrust bearing material cannot work normally in a high-temperature environment, has poor temperature resistance, and has deformation caused by poor mechanical property in the high-temperature environment, so that uneven wear is caused; the surface hardness is reduced in a high-temperature environment, and surface pitting, gluing and serious abrasive wear of the bearing are easily caused.
Furthermore, the utility model discloses in: the lower movable plate and/or the lower static plate of the thrust bearing are made of hard alloy, particularly made of hard alloy YG20C, so that the lower movable plate and/or the lower static plate of the thrust bearing are good in temperature resistance, difficult to deform at high temperature, high in hardness, wear-resistant and long in service life; the upper static plate of the thrust bearing is made of aluminum bronze, and the upper movable plate of the thrust bearing is made of bearing steel; specifically, the upper static plate of the thrust bearing is made of aluminum bronze QAL-4-4-2, and the upper movable plate of the thrust bearing is made of bearing steel GCr15, so that the friction pair has good low-speed performance and is suitable for dry friction working conditions during low-speed starting; the thrust bearing movable plate protective shell adopts the precision alloy 4J42, and the thermal expansion coefficient of the thrust bearing movable plate protective shell is very close to that of the hard alloy, so that the thrust bearing lower movable plate and the movable plate protective shell which are assembled together in an interference fit mode are not prone to falling off due to high temperature.
And, enabling it to operate more reliably in high temperature environments; the method is more suitable for the low-speed starting working condition.
The thrust bearing structure of the utility model comprises a shaft penetrating through a thrust bearing shell; a lower thrust bearing movable plate and a lower thrust bearing static plate are additionally arranged in the thrust bearing shell of the shaft, and lubricating oil enters the space between the lower thrust bearing static plate and the lower thrust bearing movable plate along with oil holes and oil grooves formed in the lower thrust bearing static plate in the relative motion process of the lower thrust bearing movable plate and the lower thrust bearing static plate to form a continuous oil film; in the working process, in the process of relative movement of the lower movable plate of the thrust bearing and the lower static plate of the thrust bearing, lubricating oil enters a liquid friction pair formed by jacking the lower movable plate of the thrust bearing between the lower static plate of the thrust bearing and the lower movable plate of the thrust bearing along with an oil hole and an oil groove formed in the lower static plate of the thrust bearing, and a lubricating oil film is established by utilizing the oil hole and the oil groove, so that the lubrication is improved, and the dry friction under the starting working condition is avoided.
Drawings
Fig. 1 is a schematic structural view of the thrust bearing structure of the present invention.
Fig. 2 is a schematic structural view of a lower stationary plate of the thrust bearing in fig. 1.
Fig. 3 is a schematic cross-sectional view of the lower stationary plate of the thrust bearing in fig. 2.
Fig. 4 is a schematic diagram of a transverse cross-sectional structure at a-a in fig. 2.
Fig. 5 is a partially enlarged schematic structural view of the lower movable plate of the thrust bearing and the lower stationary plate of the thrust bearing in fig. 1 during operation.
In the figure: the thrust bearing comprises a shaft 1, a thrust bearing shell 2, a compression spiral ring 3, a compression sleeve 4, a thrust bearing upper static plate 5, a thrust bearing upper movable plate 6, a thrust bearing movable plate protective shell 7, a spacer sleeve 8, a thrust bearing lower movable plate 9, a thrust bearing lower static plate 10, a red copper gasket 11, a support spiral ring 12, an elastic retainer ring 13, a movable plate pressing sleeve 14, a semi-ring sleeve 15, a semi-ring 16, an oil groove 101 and an oil hole 102.
Detailed Description
The utility model aims to provide a thrust bearing structure to solve the problem that the failure rate of the thrust bearing is high in the process of lifting well fluid by using an electric submersible pump in the oil field at the present stage, which brings great trouble to the production of the oil field; the lubrication is poor, because the submersible electric pump unit is greatly restricted by the space size, an auxiliary lubricating device or a structure cannot be additionally arranged, the lubricating oil is difficult to enter a gap of a friction pair of a thrust bearing, the lubricating quality is influenced, dry friction is caused under the starting working condition, when the electric pump is just started, the rotating speed is relatively low, the lubrication is difficult to enter the friction pair, an effective oil film cannot be formed, the dry friction is caused, and the problems of gluing and galling caused by overhigh local temperature of the friction surface are solved. In order to realize the purpose, the following technical scheme is specifically provided:
in the embodiment of the present invention, as shown in fig. 1 to 5, a thrust bearing structure includes a shaft 1 penetrating through a thrust bearing housing 2; the shaft 1 is positioned in the thrust bearing shell 2 and is additionally provided with a thrust bearing lower movable plate 9 and a thrust bearing lower static plate 10, and lubricating oil enters the thrust bearing lower static plate 10 and the thrust bearing lower movable plate 9 along with an oil hole 102 and an oil groove 101 formed in the thrust bearing lower static plate 10 to form a continuous oil film in the relative motion process of the thrust bearing lower movable plate 9 and the thrust bearing lower static plate 10 so as to increase the lubrication degree.
The embodiment of the utility model provides an in, in the course of the work, the relative motion in-process takes place for quiet board 10 under thrust bearing under movable plate 9 and thrust bearing lubricating oil along with thrust bearing under set up some oilhole 102 and oil ditch 101 on quiet board 10 enter into under the thrust bearing between quiet board 10 and thrust bearing movable plate 9 jack-up thrust bearing the liquid friction pair that movable plate 9 formed down, and utilize oilhole 102 and oil ditch 101 to establish the lubricating oil film, the lubrication has been improved, avoided starting the dry friction under the operating mode, when the charge pump just started, the rotational speed is lower relatively, it is comparatively difficult that the lubrication gets into the friction pair, can't form effectual oil film, cause dry friction, make friction surface local temperature too high lead to the veneer, the problem of napping.
In the embodiment of the utility model, as shown in fig. 2 and 3, oil groove 101 is provided with a plurality ofly, and is the array distribution under thrust bearing on quiet board 10 to with open the oilhole 102 intercommunication at the port, inside lubricating oil entered into oil groove 101 through oilhole 102, and oil groove 101 and thrust bearing lower movable plate 9 form the oil wedge angle, accomplish and form continuous oil film. The number of the oil grooves 101 is 2, 3, 4, 5, and 6, and specifically, the number of the oil grooves 101 is not limited as long as the lubricating oil can enter the oil grooves 101 through the oil holes 102, and the oil grooves 101 and the thrust bearing lower movable plate 9 form an oil wedge angle to complete formation of a continuous oil film, and preferably, 6 oil grooves 101 are provided.
In the embodiment of the present invention, as shown in fig. 1, a support spiral ring 12 is installed on the thrust bearing housing 2, and a red copper gasket 11 and a spacer 8 are sequentially installed on the support spiral ring 12; the lower static plate 10 of the thrust bearing is arranged between the red copper gasket 11 and the spacer bush 8; the lower thrust bearing static plate 10 is fixedly arranged on the thrust bearing shell 2, and the lower thrust bearing movable plate 9 is fixedly arranged on the shaft 1. Further scheme: and a support spiral ring 12 is detachably arranged on the thrust bearing shell 2 through threads.
In the embodiment of the present invention, as shown in fig. 1, the shaft 1 is located inside the thrust bearing housing 2 and is additionally provided with a thrust bearing upper stationary plate 5 and a thrust bearing upper movable plate 6; the upper thrust bearing static plate 5 is mounted on a thrust bearing movable plate protective housing 7, and the lower thrust bearing movable plate 9 is assembled on the thrust bearing movable plate protective housing 7. Further scheme: the upper thrust bearing static plate 5 and the movable thrust bearing plate protective shell 7 are assembled by screws; the thrust bearing lower movable plate 9 is assembled with the thrust bearing movable plate protective housing 7 in an interference fit mode.
Before starting, the shaft 1 is influenced by an upward axial force due to the elasticity of a mechanical seal, and at the moment, the upper thrust bearing movable plate 6 and the upper thrust bearing static plate 5 are attached to form a continuous oil film which is the same as that formed by the lower thrust bearing movable plate 9 and the lower thrust bearing static plate 10; after the thrust bearing is started, the axial force transmitted to the axial direction from the load is gradually increased, the shaft is moved downwards after overcoming the elasticity of the mechanical seal until the lower static plate 10 of the thrust bearing is contacted with the lower movable plate 9 of the thrust bearing to form a continuous oil film, and at the moment, the thrust bearing enters a normal working state; the lower static plate 10 of the thrust bearing is fixedly arranged on the housing 2 of the thrust bearing, the lower movable plate 9 of the thrust bearing is fixedly arranged on the shaft 1, the shaft 1 starts to rotate when the electric pump unit works, and the lower static plate 10 of the thrust bearing and the lower movable plate 9 of the thrust bearing generate relative motion.
In the embodiment of the present invention, as shown in fig. 1, the shaft 1 is provided with two half rings 16 through ring grooves formed on the shaft, and the half rings 16 are sleeved with two half ring sleeves 15; the shaft 1 is provided with an elastic retainer ring 13 through a ring groove formed in the shaft 1, and the shaft 1 is pressed with a movable plate pressing sleeve 14. And a compression sleeve 4 and a compression spiral ring 3 are sequentially arranged in the thrust bearing shell 2.
In the embodiment of the utility model, as shown in fig. 1, the common thrust bearing material can not work normally in high temperature environment, the common thrust bearing material has poor temperature resistance, and the mechanical property is deteriorated to cause deformation in high temperature environment, resulting in uneven wear; the hardness of the surface is reduced in a high-temperature environment, so that surface pitting corrosion, gluing and serious abrasive wear of the bearing are easily caused; furthermore, the thrust bearing lower movable plate 9 and/or the thrust bearing lower stationary plate 10 are made of hard alloy, specifically, made of hard alloy YG20C, and have the advantages of good temperature resistance, difficult deformation at high temperature, high hardness, wear resistance and long service life; the upper static plate 5 of the thrust bearing is made of aluminum bronze, and the upper movable plate 6 of the thrust bearing is made of bearing steel; specifically, the upper static plate 5 of the thrust bearing is made of aluminum bronze QAL-4-4-2, and the upper movable plate 6 of the thrust bearing is made of bearing steel GCr15, so that the friction pair has good low-speed performance and is suitable for dry friction working conditions during low-speed starting; the thrust bearing movable plate protective shell 7 adopts the precision alloy 4J42, and the thermal expansion coefficient of the thrust bearing movable plate protective shell is very close to that of the hard alloy, so that the thrust bearing lower movable plate and the movable plate protective shell which are assembled together in an interference fit mode are not prone to falling off due to high temperature. And, enabling it to operate more reliably in high temperature environments; the method is more suitable for the low-speed starting working condition.
The thrust bearing structure of the utility model comprises a shaft 1 which penetrates through a thrust bearing shell 2; a thrust bearing lower movable plate 9 and a thrust bearing lower static plate 10 are additionally arranged inside the thrust bearing shell 2 of the shaft 1, and lubricating oil enters between the thrust bearing lower static plate 10 and the thrust bearing lower movable plate 9 along with an oil hole 102 and an oil groove 101 formed on the thrust bearing lower static plate 10 in the relative motion process of the thrust bearing lower movable plate 9 and the thrust bearing lower static plate 10 to form a continuous oil film; in the working process, in the process of relative movement of the lower thrust bearing movable plate 9 and the lower thrust bearing fixed plate 10, lubricating oil enters a liquid friction pair formed by jacking the lower thrust bearing movable plate 9 along with the oil hole 102 and the oil groove 101 formed in the lower thrust bearing fixed plate 10 and the lower thrust bearing movable plate 9, and a lubricating oil film is established by utilizing the oil hole 102 and the oil groove 101, so that the lubrication is improved, the dry friction under the starting working condition is avoided, when an electric pump is just started, the rotating speed is relatively low, the lubrication is difficult to enter the friction pair, an effective oil film cannot be formed, the dry friction is caused, and the problems of gluing and galling caused by overhigh local temperature of the friction surface are solved.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
Although the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those skilled in the art.
Claims (9)
1. A thrust bearing structure is characterized in that,
including a shaft extending through the thrust bearing housing;
the shaft is arranged in the thrust bearing shell and is additionally provided with a thrust bearing lower movable plate and a thrust bearing lower static plate, and lubricating oil enters the thrust bearing lower static plate and the thrust bearing lower movable plate along with an oil hole and an oil groove formed in the thrust bearing lower static plate in the relative motion process to form a continuous oil film for increasing the lubrication degree.
2. A thrust bearing structure as claimed in claim 1, wherein said oil grooves are provided in plural, and are distributed in an array on the lower stationary plate of the thrust bearing and communicate with oil holes opened at the ports, the lubricating oil enters into the oil grooves through the oil holes, and the oil grooves form an oil wedge angle with the lower stationary plate of the thrust bearing.
3. A thrust bearing arrangement according to claim 1,
a support spiral ring is arranged on the thrust bearing shell, and a red copper gasket and a spacer bush are sequentially arranged on the support spiral ring;
the lower static plate of the thrust bearing is arranged between the red copper gasket and the spacer bush;
the lower static plate of the thrust bearing is fixedly arranged on the thrust bearing shell, and the lower movable plate of the thrust bearing is fixedly arranged on the shaft.
4. A thrust bearing arrangement according to claim 3, wherein the thrust bearing housing is threadably removably mounted with a support ring.
5. A thrust bearing arrangement according to claim 1,
the shaft is positioned in the thrust bearing shell and is additionally provided with a thrust bearing upper static plate and a thrust bearing upper movable plate;
the upper static plate of the thrust bearing is arranged on the movable plate protective shell of the thrust bearing, and the lower movable plate of the thrust bearing is assembled on the movable plate protective shell of the thrust bearing.
6. The thrust bearing structure of claim 5, wherein the thrust bearing upper stationary plate and the thrust bearing movable plate protective housing are assembled by screws; and the thrust bearing lower movable plate is in interference fit with the thrust bearing movable plate protective shell.
7. A thrust bearing arrangement according to claim 1,
the shaft is provided with two semi-rings through a ring groove, and the semi-rings are sleeved with two semi-ring sleeves;
the shaft is provided with an elastic check ring through a ring groove, and the shaft is pressed with a movable plate pressing sleeve.
8. A thrust bearing arrangement according to claim 1, wherein a compression sleeve and a compression ring are mounted in sequence within the thrust bearing housing.
9. A thrust bearing structure according to any one of claims 1 to 8, wherein the lower thrust bearing moving plate and/or the lower thrust bearing stationary plate is made of cemented carbide; the upper static plate of the thrust bearing is made of aluminum bronze, and the upper movable plate of the thrust bearing is made of bearing steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021003107.9U CN212615546U (en) | 2020-06-04 | 2020-06-04 | Thrust bearing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021003107.9U CN212615546U (en) | 2020-06-04 | 2020-06-04 | Thrust bearing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212615546U true CN212615546U (en) | 2021-02-26 |
Family
ID=74722288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021003107.9U Withdrawn - After Issue CN212615546U (en) | 2020-06-04 | 2020-06-04 | Thrust bearing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212615546U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114688071A (en) * | 2022-04-15 | 2022-07-01 | 山东省章丘鼓风机股份有限公司 | Integral bearing box for fan and disassembling method thereof |
-
2020
- 2020-06-04 CN CN202021003107.9U patent/CN212615546U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114688071A (en) * | 2022-04-15 | 2022-07-01 | 山东省章丘鼓风机股份有限公司 | Integral bearing box for fan and disassembling method thereof |
| CN114688071B (en) * | 2022-04-15 | 2023-12-15 | 山东省章丘鼓风机股份有限公司 | Integral bearing box for fan and disassembling method thereof |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20210226 Effective date of abandoning: 20210324 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20210226 Effective date of abandoning: 20210324 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20220615 Address after: Complex building 20-3, 4th Street, Shenyang Economic and Technological Development Zone, Liaoning 110027 Patentee after: TONGYI TECHNOLOGY CO.,LTD SHENYANG University OF TECHNOLOGY Address before: No.23-2, Hunhe 15th Street, Shenyang Economic and Technological Development Zone, Liaoning 110000 Patentee before: Shenyang Petroleum Technology Development Co.,Ltd. Patentee before: Karamay tianxingtai Petroleum Technology Co., Ltd |
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| TR01 | Transfer of patent right |