CN114061950B - Positive fluid bearing tilting pad sliding bearing test bed - Google Patents

Positive fluid bearing tilting pad sliding bearing test bed Download PDF

Info

Publication number
CN114061950B
CN114061950B CN202111332889.XA CN202111332889A CN114061950B CN 114061950 B CN114061950 B CN 114061950B CN 202111332889 A CN202111332889 A CN 202111332889A CN 114061950 B CN114061950 B CN 114061950B
Authority
CN
China
Prior art keywords
bearing
tilting pad
loading
pad sliding
sliding bearing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202111332889.XA
Other languages
Chinese (zh)
Other versions
CN114061950A (en
Inventor
许永利
谢荣盛
傅珏奕
郭中外
毛明
徐高欢
沈卫英
朱伟强
舍列格·瓦列里
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Shenfa Bearing Shell Co ltd
Original Assignee
Zhejiang Shenfa Bearing Shell Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Shenfa Bearing Shell Co ltd filed Critical Zhejiang Shenfa Bearing Shell Co ltd
Priority to CN202111332889.XA priority Critical patent/CN114061950B/en
Publication of CN114061950A publication Critical patent/CN114061950A/en
Application granted granted Critical
Publication of CN114061950B publication Critical patent/CN114061950B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G01M13/04—Bearings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
    • G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/0009—Force sensors associated with a bearing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G01M13/04—Bearings
    • G01M13/045—Acoustic or vibration analysis

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Acoustics & Sound (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

The invention discloses a positive fluid bearing tilting pad sliding bearing test bed, which comprises: a main shaft; the power input system is coupled with the main shaft and is used for providing rotating power for the main shaft; the loading system is arranged in the middle of the main shaft and is used for loading the main shaft; the left half bearing system comprises a first loading seat and a first flexible loading device, wherein the first loading seat is used for installing a first tilting pad sliding bearing to be tested, the first tilting pad sliding bearing to be tested is sleeved on the left side part of the main shaft, and the first flexible loading device acts on the first loading seat; the right half bearing system comprises a second loading seat and a second flexible loading device, wherein the second loading seat is used for installing a second tilting pad sliding bearing to be tested, the second tilting pad sliding bearing to be tested is sleeved on the right side part of the main shaft, and the second flexible loading device acts on the second loading seat. The vibration test device is used for solving the problem that the vibration test of the actual engineering environment cannot be well simulated in the prior art.

Description

Positive fluid bearing tilting pad sliding bearing test bed
Technical Field
The application relates to the technical field of bearing loading tests, in particular to a positive fluid bearing tilting pad sliding bearing test bed.
Background
In many large-scale rotating machinery equipment, such as water turbines, steam turbines, nuclear power plants and the like, the common sliding bearing cannot meet the requirements of high bearing performance, low power consumption and the like, and the tilting pad sliding bearing has higher bearing capacity and more stable performance compared with the traditional bearing due to the multi-pad structure and self-adaptive aligning. At present, most of the test bed is an inverted test bed, which is mainly used for testing basic performance parameters of a test bearing, such as temperature rise, eccentricity, rigidity, damping coefficient and the like, and the structure cannot well simulate the vibration test of the actual engineering environment.
Disclosure of Invention
In view of this, the embodiment of the application provides a positive fluid bearing tilting pad sliding bearing test bed for solving the problem that the prior art can not simulate actual engineering environment vibration test very well.
According to an embodiment of the present application, there is provided a positive fluid bearing tilting pad plain bearing test stand, comprising:
a main shaft;
the power input system is coupled with the main shaft and is used for providing rotating power for the main shaft;
the loading system is arranged in the middle of the main shaft and is used for loading the main shaft;
the left half bearing system comprises a first loading seat and a first flexible loading device, wherein the first loading seat is used for installing a first tilting pad sliding bearing to be tested, the first tilting pad sliding bearing to be tested is sleeved on the left side part of the main shaft, and the first flexible loading device acts on the first loading seat;
the right half bearing system comprises a second loading seat and a second flexible loading device, wherein the second loading seat is used for installing a second tilting pad sliding bearing to be tested, the second tilting pad sliding bearing to be tested is sleeved on the right side part of the main shaft, and the second flexible loading device acts on the second loading seat.
Further, the power input system comprises a motor and a transmission mechanism, and the power of the motor is transmitted to the main shaft through the transmission mechanism.
Further, the transmission mechanism comprises a first coupler, a belt transmission mechanism and a second coupler, wherein the output end of the motor is connected with the input end of the belt transmission mechanism through the first coupler, and the output end of the belt transmission mechanism is connected with the main shaft through the second coupler.
Further, the device for measuring torque and the third coupler are further included, and the device for measuring torque and the third coupler are sequentially connected between the second coupler and the main shaft.
Further, the loading system includes:
the bearing is arranged in the middle of the main shaft;
one end of the connecting piece is abutted with the outer end of the deep groove ball bearing;
one end of the force sensor is connected with the other end of the connecting piece; and
And the loader, the driving end acts on the other end of the force sensor.
Further, the bearing is a deep groove ball bearing, the loader adopts a jack, and the first flexible loading device adopts a spring or a steel wire rope.
Further, the bearing further comprises a loading bearing seat, and the loading bearing seat is sleeved on the bearing.
Further, the left half bearing system further comprises a bearing box body and an upper box cover plate, the first loading seat is arranged in the bearing box body, the upper box cover plate is detachably fixed on the bearing box body, and the first flexible loading device is respectively connected between the first loading seat and the bearing box body and between the first loading seat and the upper box cover plate.
Further, an acquisition system is also included, the acquisition system includes:
the temperature sensor is used for collecting the temperatures of the first tilting pad sliding bearing and the second tilting pad sliding bearing to be detected;
the pressure sensor is used for collecting the pressure of the first tilting pad sliding bearing and the second tilting pad sliding bearing to be detected;
the electric vortex displacement sensor is used for collecting the oil film thickness of the first tilting pad sliding bearing and the second tilting pad sliding bearing to be detected;
and the acceleration sensor is used for collecting vibration characteristics of the first tilting pad sliding bearing and the second tilting pad sliding bearing to be tested.
Further, still include oil circuit system, oil circuit system includes:
an oil pump; and
The oil inlet and outlet pipeline is communicated with the oil outlet of the oil pump at one end, and the oil inlet of the first tilting pad sliding bearing to be tested and the oil inlet of the second tilting pad sliding bearing to be tested at the other end.
The technical scheme provided by the embodiment of the application can comprise the following beneficial effects:
according to the embodiment, the test bed for the upright fluid tilting pad sliding bearing is designed, and compared with an inverted test bed, the test bed can simulate the actual use condition of the bearing in the working process, so that the dynamic and static characteristics of the test bearing are more in line with the actual conditions, the problem that the prior art cannot simulate the vibration test of the actual engineering environment well is solved, and the dynamic characteristics and vibration damping characteristics of the rotor can be further studied in depth.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
FIG. 1 is a schematic perspective view of a positive fluid bearing tilting pad slide bearing test stand according to an exemplary embodiment.
FIG. 2 is a schematic side view of a positive fluid bearing tilting pad slide bearing test stand according to an exemplary embodiment.
Fig. 3 is a schematic perspective view of a gear mechanism structure according to an exemplary embodiment.
Fig. 4 is a schematic perspective view of a left bearing system configuration, according to an exemplary embodiment.
Fig. 5 is a schematic cross-sectional view of a spindle shown in accordance with an exemplary embodiment.
Fig. 6 is a schematic perspective view of a hand jack shown according to an exemplary embodiment.
Fig. 7 is a schematic perspective view of a tilt pad slide bearing according to an exemplary embodiment.
Fig. 8 is a diagram illustrating a bushing temperature and pressure sensor arrangement according to an exemplary embodiment.
FIG. 9 is a diagram illustrating an arrangement of eddy current displacement sensors, according to one exemplary embodiment.
Fig. 10 is a diagram showing an arrangement of acceleration sensors according to an exemplary embodiment.
The reference numerals in the figures are:
10. a main shaft;
20. a power input system; 21. a motor; 22. a first coupling; 23. a belt drive mechanism; 24. a second coupling; 25. a torque measuring device; 26. a third coupling;
30. loading a system; 31. a bearing; 32. a connecting piece; 33. a force sensor; 34. a loader; 35. a connecting bolt; 36. loading a bearing seat;
40. a left half bearing system; 41. a first load seat; 42. a first flexible loading device; 43. a bearing housing; 44. an upper case cover plate; 45. a suspension ring screw;
50. a right half bearing system; 51. a second load seat; 52. a second flexible loading device;
60. the first tilting pad sliding bearing to be tested; 61. an oil inlet hole; 62. an oil groove;
70. the second tilting pad sliding bearing to be tested;
81. a temperature sensor; 82. a pressure sensor; 83. an eddy current displacement sensor; 84. an acceleration sensor;
90. an oil circuit system; 91. an oil pump; 92. and an oil inlet and outlet pipeline.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as detailed in the accompanying claims.
The terminology used in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.
It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, a first message may also be referred to as a second message, and similarly, a second message may also be referred to as a first message, without departing from the scope of the present application. The word "if" as used herein may be interpreted as "at … …" or "at … …" or "responsive to a determination", depending on the context.
As shown in fig. 1-2, an embodiment of the present invention provides a test stand for a positive fluid-bearing tilting pad slide bearing 31, comprising: a main shaft 10, a power input system 20, a loading system 30, a left half bearing system 40, a right half bearing system 50, wherein the power input system 20 is coupled with the main shaft 10 and is used for providing rotating power for the main shaft 10; the loading system 30 is installed at the middle part of the spindle 10, and is used for providing loading for the spindle 10; the left half bearing system 40 comprises a first loading seat 41 and a first flexible loading device 42, wherein the first loading seat 41 is used for installing a first tilting pad sliding bearing 60 to be tested, the first tilting pad sliding bearing 60 to be tested is sleeved on the left part of the main shaft 10, and the first flexible loading device 42 acts on the first loading seat 41; the right half bearing system 50 comprises a second loading seat 51 for mounting a second tilting pad sliding bearing 70 to be tested and a second flexible loading device 52, wherein the second tilting pad sliding bearing 70 to be tested is sleeved on the right side part of the main shaft 10, and the second flexible loading device 52 acts on the second loading seat 51.
According to the embodiment, the test bed for the upright fluid tilting pad sliding bearing is designed, and compared with an inverted test bed, the test bed can simulate the actual use condition of the bearing in the working process, so that the dynamic and static characteristics of the test bearing are more in line with the actual conditions, the problem that the prior art cannot simulate the vibration test of the actual engineering environment well is solved, and the dynamic characteristics and vibration damping characteristics of the rotor can be further studied in depth.
It should be noted that, the tilting pad sliding bearings to be tested according to the embodiments of the present invention are installed at the left and right ends of the spindle 10 to play a supporting role, so that the tilting pad sliding bearings are called as a right-set structure, and the right and left ends of the spindle 10 are supported by other bearings. Compared with an inverted structure, the upright structure of the embodiment of the invention can simulate the actual situation in the working process, so that the dynamic and static characteristics of the test bearing are more in line with the actual situation, and the dynamic characteristics and vibration reduction characteristics of the rotor can be further studied in depth.
In one embodiment, referring to fig. 3, the power input system 20 includes a motor 21 and a transmission mechanism through which power of the motor 21 is transmitted to the spindle 10. The transmission mechanism can take various forms, such as a belt transmission form, a gear transmission form or a chain transmission form, and the belt transmission form is preferably adopted in the present embodiment.
Further, the transmission mechanism comprises a first coupling 22, a belt transmission mechanism 23 and a second coupling 24, the output end of the motor 21 is connected with the input end of the belt transmission mechanism 23 through the first coupling 22, and the output end of the belt transmission mechanism 23 is connected with the main shaft 10 through the second coupling 24. Both the first coupling 22 and the second coupling 24 may be quincuncial couplings. The transmission mechanism can transmit power from the motor 21 to the main shaft 10, so as to play a role in transition. The transmission mechanism is transmitted through the belt transmission mechanism 23, so that on one hand, the servo motor 21 can be prevented from being directly connected with the main shaft 10 to cause the main shaft 10 to be subjected to additional bending moment action, and the main shaft can serve as an unloading device; on the other hand, the driving belt wheel is a large belt wheel, and the driven wheel is a small belt wheel, so that the speed increasing effect can be achieved; meanwhile, the belt pulley belt structure is adopted, and the belt pulley structure has a certain buffering and vibration absorbing function and is more reasonable in overall structure layout.
Further, the device for measuring torque 25 and the third coupling 26 are further included, and the device for measuring torque 25 and the third coupling 26 are sequentially connected between the second coupling 24 and the main shaft 10. The torque measuring device 25 may be used to measure the amount of torque output by the motor 21 to the spindle 10. The third coupling 26 preferably adopts a diaphragm coupling, and the diaphragm coupling has strong misalignment compensation capability, is convenient to assemble and disassemble, and does not need to disassemble the diaphragm coupling and the transmission system due to certain adjustability in the axial direction in the process of replacing the tilting pad sliding bearing to be tested and the main shaft 10.
In one embodiment, as shown in fig. 5 and 6, the loading system 30 includes: a bearing 31, a connecting piece 32, a force sensor 33 and a loader 34, wherein the bearing 31 is arranged in the middle of the main shaft 10; one end of the connecting piece 32 is abutted against the outer end of the deep groove ball bearing 31; one end of the force sensor 33 is connected with the other end of the connecting piece 32; the drive end of the loader 34 acts on the other end of the force sensor 33. The bearing 31 can also be mounted in the middle of the spindle 10 by means of a loading bearing block 36, the magnitude of the applied load being achieved by controlling the loader 34 and the indication being read by the force sensor 33.
Further, the bearing 31 is a deep groove ball bearing, so that a larger radial load can be borne, one end of the bearing 31 seat is positioned through a shaft shoulder, and the other end of the bearing 31 seat is positioned by utilizing an elastic retainer ring for the shaft, so that axial movement is prevented.
Further, the loader 34 is a jack, preferably a hand-operated jack, the force sensor 33 is preferably an S-shaped force sensor, and the force sensor 33 is used for controlling the applied load after the rocker is manually rotated.
Further, the hand-operated jack is mainly in a diamond structure, two diagonal lines of the structure are perpendicular to each other, so that the rocker rotates to drive the ejector rod and the connecting piece 32 to move towards the vertical direction, and the connecting piece 32 is connected with the loading bearing seat 36 through the connecting bolt 35, so that the actual working condition load condition can be simulated in real time.
In an embodiment, as shown in fig. 4, the first flexible loading device 42 and the second flexible loading device 52 are both springs or steel wires, and the first flexible loading device 42 and the second flexible loading device 52 are used for realizing flexible loading, and the spring realizes flexible loading, which is easily understood, and the steel wires realize flexible loading through elastic deformation of the steel wires.
In an embodiment, the first loading seat 41 and the second loading seat 51 may have the same structure, and the split sliding bearing 31 may be used as the loading seat, and may be formed by combining an upper bearing loading seat and a lower bearing loading seat, so as to facilitate installation of the tilting pad sliding bearing to be tested.
In an embodiment, the left half bearing system 40 further includes a bearing housing 43 and an upper housing cover 44, the first loading seat 41 is disposed in the bearing housing 43, the upper housing cover 44 is detachably fixed on the bearing housing 43, and the first flexible loading device 42 is respectively connected between the first loading seat 41 and the bearing housing 43 and between the first loading seat 41 and the upper housing cover 44.
In order to facilitate observation of the condition of the spindle 10 in the test process and convenient installation of various parts, the upper box cover plate 44 has a non-cover structure, but in order to prevent impurities in air from entering the lubricating oil of the box, the upper end of the upper box cover plate 44 can be connected with the upper box cover plate 44 by using a transparent acrylic plate through bolts, and the disassembly is convenient.
In order to realize flexible loading, the two side surfaces of the upper bearing loading seat and the lower bearing loading seat are respectively provided with a lifting screw 45, the corresponding positions of the inner walls of the bearing box 43 and the upper box cover plate 44 are also provided with the lifting screw 45, the lifting screws 45 of the inner walls of the upper bearing loading seat and the bearing box 43 are connected through springs, and the lifting screws 45 of the lower bearing loading seat and the lower bearing loading seat are connected through springs.
The right half bearing system 50 has the same structure as the left half bearing system 40, and will not be described here.
In an embodiment, further comprising an acquisition system comprising: the temperature sensor 81 is used for acquiring the temperatures of the first tilting pad sliding bearing and the second tilting pad sliding bearing to be detected; the pressure sensor 82 is used for collecting the pressure of the first tilting pad sliding bearing and the second tilting pad sliding bearing to be tested; the eddy current displacement sensor 83 is used for collecting the oil film thickness of the first tilting pad sliding bearing and the second tilting pad sliding bearing to be detected; the acceleration sensor 84 is used for acquiring vibration characteristics of the first tilting pad sliding bearing and the second tilting pad sliding bearing to be tested.
As shown in fig. 8, the temperature sensor 81 is a thermocouple type and is buried in the first and second loading seats together with the pressure sensor 82 to measure the temperature and pressure values of the tilting pad sliding bearing to be measured. In order to facilitate the installation of the temperature sensor 81 and the pressure sensor 82, temperature measurement and pressure measurement holes are formed in each bearing bush along the circumferential direction, three small holes can be formed in two end faces of each bearing bush respectively, one end of each bearing bush is used for measuring temperature, and the other end of each bearing bush is used for measuring pressure.
As shown in fig. 9, the eddy current displacement sensor 83 needs to measure in the horizontal direction and the vertical direction respectively, and the direct measurement of the oil film thickness is inconvenient, so that the displacement amounts of the outer ring of the main shaft 10 and the outer ring of the bearing 31 in the horizontal direction and the vertical direction are respectively tested, and the difference value between the displacement amounts is the actual value of the oil film in the horizontal direction and the vertical direction respectively, and the actual thickness of the oil film can be obtained according to the geometric relationship.
As shown in fig. 10, the acceleration sensor 84 is mainly used for collecting vibration signals (including vibration of the bearing bush and the oil film) of the first and second tilting pad sliding bearings to be tested, and for testing convenience, the acceleration sensor 84 is installed at two sides of the first and second loading seats and two sides of the bearing housing 43 for testing the vibration signals of the tilting pad sliding bearing 31.
Through the sensors, the temperature, pressure and film thickness of the bearing bushes and vibration signals of the first tilting pad sliding bearing and the second tilting pad sliding bearing to be detected are collected, three temperature test points and pressure test points can be adopted for each bearing bush, four eddy current sensors can be used for testing the thickness of an oil film, and four acceleration sensors 84 can be used for the vibration signals, 26 test interfaces are required in total, so that an NI PCI-6259 type collection card can be selected, and 32 paths of 16-bit high-speed data can be collected.
In an embodiment, further comprising an oil system 90, said oil system 90 comprising: the oil pump 91 and the oil inlet and outlet pipeline 92, one end of the oil inlet and outlet pipeline 92 is communicated with the oil outlet of the oil pump 91, and the other end of the oil inlet and outlet pipeline 92 is communicated with the oil inlet holes 61 of the first tilting pad sliding bearing to be tested and the second tilting pad sliding bearing to be tested. The lubricating oil is acted by the oil pump 91 to generate pressure difference, enters the oil inlet of the tilting pad sliding bearing to be tested from the oil pump 91, and lubricates the bearing 31 along the oil hole.
As shown in fig. 7, the side wall of the sliding bearing of the tilting pad to be measured is provided with a plurality of oil inlet holes 61, the outer ring is provided with an oil groove 62, the oil holes are distributed at the joint of the inner tiles of the bearing 31, lubricating oil is introduced into the oil groove 62 of the outer ring of the sliding bearing of the tilting pad to be measured through the oil inlet holes on the loading seat by an oil pump 91 through an oil inlet and outlet pipeline 92, and the lubricating oil in the oil groove 62 can enter the gap between the bearing bush and the main shaft 10 through the oil inlet and form hydrodynamic lubrication.
The positive fluid bearing tilting pad sliding bearing test bed is also called a rotor dynamics platform, and the working process is as follows:
starting the motor 21, transmitting power to the spindle 10 through the transmission mechanism, opening the oil pump 91 to control the flow and the oil pressure of lubricating oil, enabling the motor 21 to reach a stable working state after a period of time, enabling the first tilting pad sliding bearing and the second tilting pad sliding bearing to be tested to form a stable oil film, namely reaching a hydrodynamic lubrication state, and forming an inner layer dynamic pressure oil film and an outer layer static pressure oil film, wherein the inner layer oil film mainly performs lubrication action, and the outer layer oil film has a certain bearing capacity. At this time, the rocking bar of the hand-operated jack is rotated to open the jack for applying load, and after the indication of the force sensor 33 reaches the specified size, the load is stopped, at this time, the voltage values of the pressure sensor 82, the temperature sensor 81 and the eddy current displacement sensor 83 are read by the data acquisition card, and the corresponding physical quantity actual value can be obtained after conversion. The different eccentricities, the load sizes and the rotating speeds of the first tilting pad sliding bearing and the second tilting pad sliding bearing to be tested are taken as factors, four levels are taken for each group of factors, three-factor four-level orthogonal tests are respectively carried out, and a better test combination can be obtained, so that the performance of the fluid tilting pad sliding bearing under the eccentricity, the load sizes and the rotating speeds can be better, and the fluid tilting pad sliding bearing can be used under the working condition as much as possible in the actual working process.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It is to be understood that the present application is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims (10)

1. A positive fluid bearing tilting pad plain bearing test stand, comprising:
a main shaft;
the power input system is coupled with the main shaft and is used for providing rotating power for the main shaft;
the loading system is arranged in the middle of the main shaft and is used for loading the main shaft;
the left half bearing system comprises a first loading seat and a first flexible loading device, wherein the first loading seat is used for installing a first tilting pad sliding bearing to be tested, the first tilting pad sliding bearing to be tested is sleeved on the left side part of the main shaft, and the first flexible loading device acts on the first loading seat;
the right half bearing system comprises a second loading seat and a second flexible loading device, wherein the second loading seat is used for installing a second tilting pad sliding bearing to be tested, the second tilting pad sliding bearing to be tested is sleeved on the right side part of the main shaft, and the second flexible loading device acts on the second loading seat;
the first loading seat (41) and the second loading seat (51) can have the same structure, and the loading seat adopts a split sliding bearing (31) and can be formed by combining an upper bearing loading seat and a lower bearing loading seat, and the loading seats are used for installing the tilting pad sliding bearing to be tested; the two side surfaces of the upper bearing loading seat and the lower bearing loading seat are respectively provided with a lifting screw (45), the corresponding positions of the inner walls of the bearing box body (43) and the upper box body cover plate (44) are also provided with the lifting screw (45), the lifting screws (45) of the inner walls of the upper bearing loading seat and the bearing box body (43) are connected through springs, and the lifting screws (45) of the lower bearing loading seat and the lower bearing loading seat are connected through springs.
2. The positive fluid bearing tilting pad plain bearing test bed according to claim 1, wherein the power input system comprises a motor and a transmission mechanism, the power of the motor being transmitted to the spindle through the transmission mechanism.
3. The positive fluid bearing tilting pad plain bearing test bed according to claim 2, wherein the transmission mechanism comprises a first coupling, a belt transmission mechanism and a second coupling, wherein the output end of the motor is connected with the input end of the belt transmission mechanism through the first coupling, and the output end of the belt transmission mechanism is connected with the main shaft through the second coupling.
4. A positive fluid bearing tilting pad plain bearing test bed according to claim 3, further comprising a torque measuring device and a third coupling, the torque measuring device and the third coupling being connected in sequence between the second coupling and the spindle.
5. The positive fluid bearing tilting pad slide bearing test stand according to claim 1 wherein said loading system comprises:
the bearing is arranged in the middle of the main shaft;
one end of the connecting piece is abutted with the outer end of the bearing;
one end of the force sensor is connected with the other end of the connecting piece; and
And the loader, the driving end acts on the other end of the force sensor.
6. The positive fluid bearing tilting pad slide bearing test bed according to claim 5 wherein the bearing is a deep groove ball bearing, the loader is a jack, and the first flexible loading means is a spring or wire rope.
7. The positive fluid bearing tilting pad plain bearing test stand according to claim 1, further comprising a load bearing housing, wherein the load bearing housing is nested on the bearing.
8. The positive fluid bearing tilting pad slide bearing test stand according to claim 1, wherein the left half bearing system further comprises a bearing housing and an upper housing cover plate, the first loading seat is disposed in the bearing housing, the upper housing cover plate is detachably secured to the bearing housing, and the first flexible loading device is respectively connected between the first loading seat and the bearing housing and between the first loading seat and the upper housing cover plate.
9. The positive fluid bearing tilting pad plain bearing test stand according to claim 1, further comprising a collection system comprising:
the temperature sensor is used for collecting the temperatures of the first tilting pad sliding bearing and the second tilting pad sliding bearing to be detected;
the pressure sensor is used for collecting the pressure of the first tilting pad sliding bearing and the second tilting pad sliding bearing to be detected;
the electric vortex displacement sensor is used for collecting the oil film thickness of the first tilting pad sliding bearing and the second tilting pad sliding bearing to be detected;
and the acceleration sensor is used for collecting vibration characteristics of the first tilting pad sliding bearing and the second tilting pad sliding bearing to be tested.
10. The positive fluid bearing tilting pad plain bearing test bed according to claim 1, further comprising an oil circuit system comprising:
an oil pump; and one end of the oil inlet and outlet pipeline is communicated with an oil outlet of the oil pump, and the other end of the oil inlet and outlet pipeline is communicated with oil inlets of the first tilting pad sliding bearing to be tested and the second tilting pad sliding bearing to be tested.
CN202111332889.XA 2021-11-11 2021-11-11 Positive fluid bearing tilting pad sliding bearing test bed Active CN114061950B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111332889.XA CN114061950B (en) 2021-11-11 2021-11-11 Positive fluid bearing tilting pad sliding bearing test bed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111332889.XA CN114061950B (en) 2021-11-11 2021-11-11 Positive fluid bearing tilting pad sliding bearing test bed

Publications (2)

Publication Number Publication Date
CN114061950A CN114061950A (en) 2022-02-18
CN114061950B true CN114061950B (en) 2024-02-13

Family

ID=80275051

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111332889.XA Active CN114061950B (en) 2021-11-11 2021-11-11 Positive fluid bearing tilting pad sliding bearing test bed

Country Status (1)

Country Link
CN (1) CN114061950B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117168809A (en) * 2023-08-04 2023-12-05 上海大学 Gas turbine tilting pad sliding bearing data wireless acquisition system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5787631B2 (en) * 2011-06-08 2015-09-30 三菱日立パワーシステムズ株式会社 Bearing test equipment
CN102607846B (en) * 2012-03-08 2015-02-04 江苏大学 Comprehensive test stand for water-lubricated bearings for pumps
CN104165768B (en) * 2014-09-04 2017-01-25 大连理工大学 Bearing integrated dynamic performance test device and method
CN110296838A (en) * 2019-07-08 2019-10-01 上海交通大学 Bearing shell testing machine for testing performance and test method
CN110542556A (en) * 2019-10-09 2019-12-06 浙江申发轴瓦股份有限公司 Tilting pad sliding bearing test box, test bench and test method
CN113390646B (en) * 2021-07-13 2024-01-30 哈尔滨工业大学 Test device and test method for simulating tilting pad bearing and pad fault of heavy gas turbine

Also Published As

Publication number Publication date
CN114061950A (en) 2022-02-18

Similar Documents

Publication Publication Date Title
CN100562741C (en) On-line measuring and testing machine for radial sliding bearing friction and wearing
CN102628747B (en) Multifunctional tribology performance test system
Dowson et al. Paper 3: an experimental investigation of the thermal equilibrium of steadily loaded journal bearings
CN102269654A (en) Water lubricated bearing and transmission system comprehensive performance testing platform
CN101876590B (en) Comprehensive performance test table for water-lubricated dynamic-static pressure radial sliding bearing
CN110160788B (en) Rolling bearing slipping research experiment table
CN109632161B (en) Rolling bearing friction torque testing machine
CN201060144Y (en) Rolling friction abrasion machine
CN111811817B (en) High-precision fluid dynamic pressure sliding bearing comprehensive performance test platform
CN104165768A (en) Bearing integrated dynamic performance test device and method
CN102607846A (en) Comprehensive test stand for water-lubricated bearings for pumps
CN105865792B (en) A kind of fixed texture Sliding bearing work bench of bearing shell pivot journal
CN101709953A (en) Lubricant film thickness measuring instrument
Liu et al. Experimental study on the lubrication characteristics of water-lubricated rubber bearings at high rotating speeds
CN107560855A (en) A kind of filmatic bearing dynamic and static state performance experimental rig
CN107084842A (en) Water lubriucated bearing dynamic characteristic parameter test device
CN106124214A (en) A kind of testing stand of bearings synthesis charger
CN104502271A (en) Device for measuring friction coefficient of water-lubricated bearing with low speed and heavy load
CN114061950B (en) Positive fluid bearing tilting pad sliding bearing test bed
CN110146283A (en) A kind of shaft coupling experimental rig and shaft coupling pilot system
CN111272424A (en) Water-lubricated bearing on-line monitoring test platform and bearing characteristic test analysis method
CN110542556A (en) Tilting pad sliding bearing test box, test bench and test method
CN207516029U (en) For the property test platform of water-lubricated dynamic thrust-journal plain bearing
CN209841382U (en) Shaft coupling test device and shaft coupling test system
CN210487269U (en) Tilting pad sliding bearing test box and test bench

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
CB03 Change of inventor or designer information

Inventor after: Xu Yongli

Inventor after: Xie Rongsheng

Inventor after: Fu Jueyi

Inventor after: Guo Zhongwai

Inventor after: Mao Ming

Inventor after: Xu Gaohuan

Inventor after: Shen Weiying

Inventor after: Zhu Weiqiang

Inventor after: Shereg Valery

Inventor before: Xu Yongli

Inventor before: Xu Gaohuan

Inventor before: Fu Jueyi

Inventor before: Guo Zhongwai

Inventor before: Mao Ming

Inventor before: Xie Rongsheng

Inventor before: Shen Weiying

Inventor before: Zhu Weiqiang

Inventor before: Shereg Valery

CB03 Change of inventor or designer information
GR01 Patent grant
GR01 Patent grant