CN107255636B - A kind of observation of cavitation device and method of water-lubricated dynamic spiral grooved thrust bearing - Google Patents
A kind of observation of cavitation device and method of water-lubricated dynamic spiral grooved thrust bearing Download PDFInfo
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- CN107255636B CN107255636B CN201710294405.4A CN201710294405A CN107255636B CN 107255636 B CN107255636 B CN 107255636B CN 201710294405 A CN201710294405 A CN 201710294405A CN 107255636 B CN107255636 B CN 107255636B
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
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Abstract
The invention discloses a kind of observation of cavitation device and methods of water-lubricated dynamic spiral grooved thrust bearing, the electro spindle of the observation device is connect with spindle thread, the helicla flute of thrust bearing is formed by being machined on the left side of main shaft, helicla flute left end is equipped with transparent bearing shell, transparent bearing shell is mounted on Sleeve assembling component left side, the sealing of blend rubber sealing ring, is finally compressed with clamping cap；Sleeve assembling component left side and right side are compressed by hexagon-headed bolt, and centre is by rubber seal rings for seal, and Sleeve assembling part left side is connect and compressed with right side and right end cap support by limit guide post, for limiting the rotation of Sleeve assembling component；The axial force of bearing is applied by loading device.When thrust bearing high-speed cruising, bubble will be formed in spiral groove surface, using high speed camera, through transparent bearing shell, so that it may shoot and record cavitation overall process, to use digital image processing techniques, carry out the subsequent analysis of quantification.
Description
Technical field
The present invention relates to the observation of cavitation device and method of thrust bearing, especially a kind of water-lubricated dynamic helicla flute thrust
The observation of cavitation device and method of bearing.
Background technique
Cavitation and cavitation erosion is to be present in high speed water-lubricated screw groove bearing more stubborn problem.To study high speed water lubrication
The mechanism of production of spiral grooved bearing cavitation bubble, it is necessary to which its Bubble Formation Process is monitored.
It specifically includes that at present around the bearing test research work of high speed water lubrication 1) according to experimental result, to the journey of cavitation corrosion
Degree carries out quantitative analysis using including losing matter method, indecorous method, area-method etc., but above method is for cavitation corrosion result carry out table
Sign, is not directed to the monitoring of cavitation processes；2) cavitation generating process is monitored using acoustic emission, vibrotechnique etc.,
But belongs to observational measurement, visual observation can not be carried out to the extent of cavitation of water lubriucated bearing workspace and quantification characterizes.
Summary of the invention:
Goal of the invention: the present invention provides a kind of observation of cavitation devices of water-lubricated dynamic spiral grooved thrust bearing, utilize
The device visual observation can be carried out to the extent of cavitation of spiral grooved thrust bearing workspace and quantification characterizes.
Summary of the invention: a kind of observation of cavitation device of water-lubricated dynamic spiral grooved thrust bearing, transformer and electro spindle
Connection, electro spindle are connect with spindle thread；Main shaft left end is machined with helicla flute, is equipped with transparent bearing shell on the left of helicla flute；Thoroughly
Bright bearing shell is mounted on Sleeve assembling component left side, and the compression end cap in left side is connected by screw and Sleeve assembling component left side
Transparent bearing shell is connect and compressed, passes through rubber seal rings for seal between transparent bearing shell and compression end cap；Sleeve assembling component right side
It is tightly attached to the left side of the left side of Sleeve assembling component and is cooperatively connected and compresses by hexagon-headed bolt and nut, centre is equipped with
Rubber seal is sealed；There are unthreaded hole, two limit studs are connected to the upper and lower two sides of Sleeve assembling component across unthreaded hole
On right end cap support, there are axial gap between Sleeve assembling component and right end cap support, right end cap support passes through turret head spiral shell
Bolt is fixedly connected on the left side of the cylinder step of electro spindle；
Sleeve assembling component left side is equipped with water inlet, and right side is equipped with water outlet, the entery and delivery port and outside
Water circulation system connection；Sealing system is equipped between Sleeve assembling component and right end cap support；
Loading device is connect with Sleeve assembling component left side by the drawing ear of the horizontal two sides in Sleeve assembling component left side,
Axially loaded power is provided for it；High speed camera is located on the left of hollow compression end cap on the central axis of main shaft.
The working principle of observation of cavitation is carried out using the observation of cavitation device of above-mentioned water-lubricated dynamic spiral grooved thrust bearing:
(1) entery and delivery port on Sleeve assembling component and external water circulation system are connected as test bearing water supply.
(2) it supplies water after stablizing, is that Sleeve assembling component left side loads axial force by axial loading device, opens at this time
Dynamic electro spindle, realizes variable speed within the scope of big linear velocity using transducer drive.
(3) when motor is to fast state, dynamic pressure moisture film is formed between bearing shell and thrust disc, Sleeve assembling component is led in limit
It moves horizontally, and cavitation zone is illuminated using xenon lamp in other side, and make under the action of the guiding and positioning of column
The shooting of cavitation zone is carried out with high speed camera.
The utility model has the advantages that the present invention provides a kind of observation of cavitation device of water-lubricated dynamic spiral grooved thrust bearing, using height
Fast camera and transparent bearing shell can directly shoot and record water-lubricated screw slot thrust bearing cavitation overall process, be subsequent number
Word image procossing lays the foundation.
Experimental provision of the present invention is compact-sized, easy to manufacture；Transparent bearing shell disassembly is easy；It is directly driven using electro spindle
It is dynamic to be sealed with non-contact gas injection, it is ensured that the operation of high speed water lubrication thrust spiral grooved bearing high speed.
Detailed description of the invention:
Fig. 1 is schematic structural view of the invention；
Fig. 2 is partial enlarged view of the invention；
Fig. 3 is direction view of the invention.
1. 4. high speed camera of workbench 2. bottom plate, 3. water circulation system, 5. air compressor 6. supports 7. electro spindles
8. 9. loading device of frequency converter, 10. Sleeve assembling component left side 11. compresses 12. rubber seal of end cap, 1 13. rubber
2 14. backwater cavity of sealing ring, 15. 17. hexagon-headed bolt of transparent 16. soket head cap screw of bearing shell, 18. clamp nut, 19. washer
20. limiting 21. 2 24. right end cap support of Sleeve assembling component right side 22. air inlet, 1 23. air inlet of guide post, 25. hexagonal
Hook bolt 26. draws 27. 29. return-air slot of small 28. water outlet of soket head cap screw, 30. gas outlet, 31. main shaft of ear, 32. aqueous vapor
Export 33. water inlets
Specific embodiment
The observation of cavitation device of water-lubricated dynamic spiral grooved thrust bearing provided by the invention as shown in Figure 1:, electro spindle
7 are fixedly installed on the bottom plate 2 of pedestal 1 by support 6, and frequency converter 8 is connect with electro spindle 7,7 other end of electro spindle and main shaft 31
It is threadedly coupled；It is machined with helicla flute in 31 left end face of main shaft, is equipped with transparent bearing shell 15, transparent bearing shell 15 on the left of helicla flute
It is installed on the middle position of Sleeve assembling component left side 10, is equipped on the left of Sleeve assembling component left side 10 and compresses end cap 11,
It compresses end cap 11 to connect by soket head cap screw 16 with Sleeve assembling component left side, and transparent bearing shell 15 is compressed, compression end
It is sealed between lid 11 and transparent bearing shell 15 using rubber seal 13；Sleeve assembling component right side 21 is close to left side 10
It is arranged and passes through bolt 17 and the left and right half portion of Sleeve assembling component is connect and compressed with nut 18, pad is provided with below nut 18
19 are enclosed, rubber seal 12 is equipped between the left and right half portion of Sleeve assembling component for sealing；Two sides are equal up and down for Sleeve assembling component
Equipped with unthreaded hole, limits guide post 20 and connect Sleeve assembling component with right end cap support 24 across the unthreaded hole, limit Sleeve assembling
The rotation of component, right end cap support 24 are fixedly installed on the side of 7 left side cylinder table rank of electro spindle by hexagon-headed bolt 25,
There are axial gaps between right end cap support and Sleeve assembling component；Loading device 9 is left by wirerope and Sleeve assembling component
The drawing ear 26 of the horizontal two sides of half portion 10 is connected, and provides axially loaded power for Sleeve assembling component；High speed camera 4 is located at hollow pressure
On the central axis of 11 left side main shaft 31 of tight end cap.
As shown in Fig. 2, Sleeve assembling component is equipped with entery and delivery port, water inlet 33 is on Sleeve assembling component left side
Radial through-hole, water outlet 28,32 is respectively the radial through-hole that is arranged on Sleeve assembling component left side and right side.Into,
Water outlet is connect with external water circulation system 3, and entery and delivery port is connected to transparent bearing shell 15 and helicla flute.
As shown in Fig. 2, gas-tight sealing system of rotaty, including air inlet 22,23 are equipped between Sleeve assembling component and right end cap support,
Gas outlet 30 and return-air slot 29；The air inlet 22 is set on Sleeve assembling component right side 21, and air inlet 23 is set to right end cap
On support 24；Air inlet 22 and 23 is through-hole and connect with air compressor 5, and return-air slot 29 is set to 24 right end of right end cap support
It is connected on face and with gas outlet 30.
A kind of observation of cavitation method that the observation of cavitation device using above-mentioned water-lubricated dynamic spiral grooved thrust bearing is realized,
Specific step is as follows:
(1) experimental provision is assembled according to component connection relationship, air inlet 22,23 and external air supply system air is compressed
Machine is connected, and water inlet 33, water outlet 28,32 are connected with external water circulation device；
(2) the axial non-contact seals for first realizing bearing using gas injection sealing in air inlet 22,23, after preventing water flowing,
Water droplet is splashed into electro spindle or overflows from Sleeve assembling component side；
(3) it supplies water from the water inlet 33 in the left side of Sleeve assembling component to test bearing, water outlet 28,32 transmits aqueous vapor
Backwater circulation system applies load in the axial of Sleeve assembling component by loading device 9, it is main to start electricity after water flowing is stablized
Axis 7 realizes variable speed within the scope of big linear velocity using the driving of frequency converter 8；
(4) when motor is to fast state, dynamic pressure moisture film, Sleeve assembling are formed between transparent bearing shell 15 and helicla flute thrust disc
Component limit guide post guiding and positioning under the action of move horizontally, and other side using xenon lamp to cavitation zone into
Row illumination, and use the shooting of the progress cavitation zone of high speed camera 4.
Claims (6)
1. a kind of observation of cavitation device of water-lubricated dynamic spiral grooved thrust bearing, it is characterised in that:
Frequency converter (8) is connect with electro spindle (7), and electro spindle (7) one end connects main shaft (31), is machined on main shaft (31) left side
Helicla flute, helicla flute left end are equipped with transparent bearing shell (15)；Transparent bearing shell (15) is mounted on Sleeve assembling component left side (10),
Sleeve assembling component left side left end is equipped with hollow compression end cap (11), and hollow compression end cap (11) is connected by screw in bearing shell
On build-up member left side (10), transparent bearing shell (15) are compressed, are made between transparent bearing shell (15) and hollow compression end cap (11)
It is sealed with rubber seal (13)；Sleeve assembling component right side (21) is close to the right side of Sleeve assembling component left side (10)
Side, and compressed the two with nut (18) by bolt (17), centre is sealed by rubber seal (12)；Sleeve assembling component
There are unthreaded holes for upper and lower two sides, limit guide post (20) and pass through unthreaded hole connection right end cap support (24), Sleeve assembling component and right end cap
There are axial gap between support (24), right end cap support (24) is fixedly arranged on the left of electro spindle (7) on the side of cylinder table rank；
Sleeve assembling component left side is equipped with water inlet, and right side is equipped with water outlet, the entery and delivery port and water cyclic system
System (3) connection；Sealing system is equipped between Sleeve assembling component and right end cap support (24)；
Loading device (9) is connect with Sleeve assembling component left side (10), provides axially loaded power for it；High speed camera (4) position
On the left of hollow compression end cap (11), on the central axis of main shaft (31).
2. the observation of cavitation device of water-lubricated dynamic spiral grooved thrust bearing according to claim 1, it is characterised in that: institute
Stating sealing system is gas-tight sealing system of rotaty, including air inlet (22,23), gas outlet (30) and return-air slot (29)；The air inlet
(22) it is set on Sleeve assembling component right side (21), air inlet (23) is set on right end cap support (24)；Air inlet (22) with
(23) be through-hole and connect with air compressor (5), return-air slot (29) be set to right end cap support (24) right side on and with go out
Port (30) connection.
3. the observation of cavitation device of water-lubricated dynamic spiral grooved thrust bearing according to claim 1, it is characterised in that: into
The mouth of a river (33) is the radial through-hole of Sleeve assembling component left side.
4. the observation of cavitation device of water-lubricated dynamic spiral grooved thrust bearing according to claim 1, it is characterised in that: go out
The mouth of a river (28), (32) are respectively the radial through-hole for being set to the left and right half portion of Sleeve assembling component.
5. the observation of cavitation device of water-lubricated dynamic spiral grooved thrust bearing according to claim 1, it is characterised in that: institute
It states Sleeve assembling component left side and is equipped with drawing ear (26), the level of loading device (9) and Sleeve assembling component left side (10)
The drawing ear (26) of two sides is connected by wirerope.
6. a kind of observation of cavitation of the observation of cavitation device of water-lubricated dynamic spiral grooved thrust bearing according to claim 1
Method, the specific steps are as follows:
(1) experimental provision is assembled according to component connection relationship, by air inlet (22,23) and external air supply system air compressor
It is connected, entery and delivery port (33), (28,32) are connected with external water circulation device；
(2) the axial non-contact seals for first realizing bearing using gas injection sealing in air inlet (22,23), after preventing water flowing, water
Drop is splashed into electro spindle or overflows from Sleeve assembling component side；
(3) it supplies water from the water inlet (33) in the left side of Sleeve assembling component to test bearing, water outlet (28,32) transmits aqueous vapor
Backwater circulation system applies load, starting electricity in the axial of Sleeve assembling component by loading device (9) after water flowing is stablized
Main shaft (7) realizes variable speed within the scope of big linear velocity using frequency converter (8) driving；
(4) when motor is to fast state, dynamic pressure moisture film is formed between bearing shell and thrust disc, Sleeve assembling component is in limit guide post
It moves horizontally, and cavitation zone is illuminated using xenon lamp in other side, and using high under the action of guiding and positioning
Fast camera carries out the shooting of cavitation zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710294405.4A CN107255636B (en) | 2017-04-28 | 2017-04-28 | A kind of observation of cavitation device and method of water-lubricated dynamic spiral grooved thrust bearing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710294405.4A CN107255636B (en) | 2017-04-28 | 2017-04-28 | A kind of observation of cavitation device and method of water-lubricated dynamic spiral grooved thrust bearing |
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| CN107255636B true CN107255636B (en) | 2019-11-12 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709747B (en) * | 2018-06-15 | 2020-02-04 | 哈尔滨工业大学 | Device and method for testing start-stop performance of precise miniature spiral groove thrust gas bearing |
| CN111024396B (en) * | 2019-12-31 | 2021-07-09 | 哈尔滨工业大学 | Spiral groove gas dynamic pressure thrust bearing performance simulation test device and test method |
| CN112182808B (en) * | 2020-10-26 | 2024-05-03 | 东南大学 | Static and dynamic performance design method for closed high-speed water lubrication dynamic pressure spiral groove thrust bearing |
| CN112580158B (en) * | 2020-11-25 | 2024-05-03 | 东南大学 | Static and dynamic performance design method for high-speed water lubrication dynamic pressure spiral groove radial bearing |
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