CN114215851A

CN114215851A - Bearing oil supply sleeve and bearing oil supply device

Info

Publication number: CN114215851A
Application number: CN202111599646.2A
Authority: CN
Inventors: 程会川; 张建超; 任浩亮; 姚轩宇
Original assignee: China Aero Engine Research Institute
Current assignee: China Aero Engine Research Institute
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-03-22

Abstract

A bearing oil supply sleeve and a bearing oil supply device, comprising a sleeve, an oil collecting part, a flow distribution part and a bearing installation part are arranged on the sleeve: the oil collecting part is arranged on the outer wall of the sleeve and is used for The oil at the position of the oil collecting part is collected; the bearing installation part is arranged on the outer wall of the sleeve for installing the inner ring of the bearing; the distribution part is arranged in the inner wall of the sleeve or on the inner wall of the sleeve, for diverting the oil collected by the oil collecting part to the bearing mounting part. The present disclosure collects the oil at the position of the oil collecting part, transfers the oil to the distribution part, and the distribution part diverts the collected oil to the position of the bearing installation part, and transfers the oil to the inner ring of the bearing, so as to realize the adjustment of the inner ring of the bearing. oil supply. The use of inner ring oil supply can improve the lubrication and cooling effect of the inner ring of the bearing, reduce the amount of lubricating oil and power loss, and greatly improve the overall lubrication and cooling effect of the bearing, which can meet the safe and reliable operation of the bearing in high DN value scenarios.

Description

Bearing oil supply sleeve and bearing oil supply device

Technical Field

The utility model belongs to the technical field of lubricated cooling, concretely relates to bearing oil supply sleeve pipe, bearing oil supply unit.

Background

At present, the bearing of the high-speed generator adopts lubrication cooling modes such as oil injection lubrication and the like, so that the lubrication oil supply efficiency is low, and the bearing inner ring is poorly lubricated and cooled; or the bearing is soaked in the lubricating oil, and the oil is stirred violently to cause a large amount of heating. After the lubricating oil enters the bearing, most of the lubricating oil is used for providing cooling and taking away heat generated by the bearing, and only a small part of the lubricating oil forms an oil film in a contact area between the ball and the track to play a role in lubrication. Along with the increase of DN value (bearing common diameter), a high-pressure area formed in the bearing can make lubricating oil difficult to enter, the power loss can be increased by simply increasing the flow of the lubricating oil, more heat is generated, and the lubricating requirement of the bearing with the high DN value is difficult to meet by the traditional oil injection lubrication.

Disclosure of Invention

In order to solve at least one of the above technical problems, a first object of the present disclosure is to provide a bearing oil supply sleeve that directly supplies oil to a bearing inner ring to improve the lubricating and cooling effects of the bearing inner ring, reduce the amount of lubricating oil and power loss, and greatly improve the overall lubricating and cooling effects of the bearing.

A second object of the present disclosure is to provide a bearing oil supply apparatus;

in order to achieve the first object of the present disclosure, the technical solutions adopted by the present disclosure are as follows:

the utility model provides a bearing oil supply sleeve pipe, includes the sleeve pipe, be provided with on the sleeve pipe and receive oil portion, join in marriage class portion and bearing installation department:

the oil collecting part is arranged on the outer wall of the sleeve and used for collecting oil liquid at the position of the oil collecting part;

the bearing mounting part is arranged on the outer wall of the sleeve and is used for mounting an inner ring of a bearing;

the oil collecting part is arranged on the inner wall of the sleeve and used for collecting oil, and the oil distributing part is arranged in the wall of the sleeve or on the inner wall of the sleeve and used for distributing the oil collected by the oil collecting part to the bearing mounting part.

Optionally, the oil collecting portion is of an impeller structure and comprises a plurality of oil collecting blades evenly arranged along the circumferential direction of the sleeve, the oil collecting blades are radially and obliquely arranged relative to the sleeve, an oil collecting cavity is formed between every two adjacent oil collecting blades, and the oil collecting cavity is communicated with the outer side space of the outer wall of the sleeve and the flow distribution portion.

Optionally, the oil collecting blade comprises a blade root, a blade middle part and a blade head part which are connected in sequence, the cross section of the blade middle part is of an arc sheet structure, and the cross section of the end part of the blade head part is an acute angle.

Optionally, the surface of the middle part of the blade facing one side of the center of the casing is provided with an axial flow collecting groove, the axial flow collecting groove is formed along the axial direction of the casing, one end of the axial flow collecting groove is communicated with the flow distribution part, and the axial flow collecting groove is further communicated with the oil collecting cavity.

Optionally, the angle between the blade root and the blade middle is an obtuse angle, and the inner side surface of the blade root forms a stop surface lateral to the axial header.

Optionally, the oil receiving portion further includes a pair of annular baffles, the oil receiving blade is installed between the pair of annular baffles, and an outer edge of the annular baffles is higher than the oil receiving blade.

Optionally, the flow distribution portion includes a circumference oil collecting groove, a plurality of axial splitter grooves and a plurality of flow distribution holes that set up on the sleeve pipe inner wall, the circumference oil collecting groove is followed sheathed tube inner wall is provided with the round, the axial splitter groove is followed sheathed tube axial setting, the even setting of flow distribution hole is in on the bearing installation department, circumference oil collecting groove and every the axial splitter groove intercommunication, every the axial splitter groove all communicates with at least one flow distribution hole, the flow distribution hole still communicates to bearing inner ring installation face on the bearing installation department.

Optionally, the axial splitter groove has a length that exceeds two-thirds of the thickness of the bearing.

In order to achieve the second object of the present disclosure, the technical solutions adopted by the present disclosure are as follows:

the utility model provides a bearing oil supply unit, includes nozzle, bearing and foretell bearing oil supply sleeve pipe, the spout of nozzle towards receive oil portion, the bearing is installed on the bearing installation department, just a plurality of oil feed holes have still been seted up to the inner ring of bearing, oil feed hole's one end with join in marriage a class portion intercommunication, oil feed hole's the other end with the inner ring's of bearing outer lane surface intercommunication.

Optionally, a circle of bearing oil collecting groove is further formed in the inner ring of the bearing, and the flow distribution portion is communicated with each oil supply hole through the bearing oil collecting groove.

This is disclosed through collecting the fluid of receiving oil portion position, transmits fluid to the joining in marriage a class portion, and the joining in marriage a class portion shunts the fluid of collecting to the position of bearing installation department, transmits fluid to the inner ring of bearing, realizes the fuel feeding to the bearing inner ring.

The lubricating and cooling effect of the bearing inner ring can be improved by utilizing the inner ring oil supply, the lubricating oil consumption and the power loss are reduced, the integral lubricating and cooling effect of the bearing can be greatly improved, and the safe and reliable operation of the bearing under the high DN value use scene is met.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.

FIG. 1 is a schematic structural view of a bearing oil supply of the present disclosure;

FIG. 2 is a schematic structural view of a bearing oil feed sleeve of the present disclosure;

FIG. 3 is a cross-sectional view of a bearing oil feed sleeve of the present disclosure;

fig. 4 is a schematic structural view of a bearing of the present disclosure.

Detailed Description

The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The bearing oil supply sleeve and the bearing oil supply device can reduce the consumption of lubricating oil and the power loss, can greatly improve the overall lubricating and cooling effects of the bearing, and meet the requirement of safe and reliable operation of the bearing in a high DN value use scene.

Example one

As shown in fig. 1 and 2, the present disclosure provides a bearing oil supply sleeve 300, including sleeve 1, the pivot 400 can be installed to 1 inner chamber of sleeve, and sleeve outer lane is used for installing the inner circle of bearing 200, can drive sleeve 1 rotatory when pivot 400 is rotatory, is provided with on the sleeve 1 and receives oil portion 2, join in marriage class portion 3 and bearing installation department 4:

the oil collecting part 2 is arranged on the outer wall of the sleeve 1 and used for collecting oil liquid at the position of the oil collecting part 2; the oil receiving part 2 can be an impeller type structure, and the sleeve 1 drives the impeller type structure to pump the oil receiving part 2 into the flow distribution part 3 of the inner cavity of the sleeve A when rotating along with the main shaft; the oil receiver 2 may have a negative pressure suction type structure, and the oil in the oil receiver is pumped to the distributor 3 by a pump.

The bearing mounting part 4 is arranged on the outer wall of the sleeve 1 and is used for mounting an inner ring of the bearing 200; the bearing installation part 4 is of a cylindrical structure or a circular tube type structure, an inner ring of the bearing 200 can be sleeved on the bearing installation part 4, oil can be introduced to the position of the inner ring of the bearing 200 through the flow distribution part 3, and the oil at the position of the inner ring can flow into a roller of the bearing to lubricate the bearing; the specific installation structure of the bearing inner ring has more prior art embodiments, and the description is not provided again.

The flow distribution part 3 is arranged inside the pipe wall of the sleeve 1 or on the inner wall of the sleeve 1 and used for distributing oil collected by the oil collection part 2 to the bearing installation part 4. The flow distribution part 3 can be composed of a pipeline and/or a pipe groove, the pipeline can be arranged inside the pipe wall of the sleeve 1, and the pipe groove can be arranged on the inner wall of the sleeve 1; the oil liquid can be distributed to the side surface of the bearing 200 on the bearing installation part 4 by the distributing part 3, and can also be distributed to the inner ring position of the bearing 200 on the bearing installation part 4, and the oil liquid can be guided to the roller position of the bearing 200 by the hole formed on the inner ring.

This is disclosed through collecting the fluid of receiving the 2 positions of oil portion, transmits fluid to joining in marriage a class portion 3, joins in marriage a class portion 3 and shunts the fluid of collecting to the position of bearing installation department 4, transmits fluid to the inner ring of bearing 200 again, realizes the fuel feeding to the inner ring of bearing 200. The inner ring oil supply is utilized to improve the inner ring lubricating and cooling effect of the bearing 200, reduce the lubricating oil consumption and power loss, greatly improve the integral lubricating and cooling effect of the bearing, and meet the requirement of safe and reliable operation of the bearing in a high DN value use scene.

In an embodiment, referring to fig. 2 and 3, the oil receiving portion 2 is an impeller structure, and includes a plurality of oil receiving blades 6 (equivalent to impellers) uniformly arranged along the circumferential direction of the sleeve 1, the number of the oil receiving blades 6 is preferably set to 4 to 16, or may be adjusted to other numbers according to the diameter of the sleeve 1, the oil receiving blades 6 are radially and obliquely arranged relative to the sleeve 1, the inclination angles of the oil receiving blades 6 may be set to be the same, the angle may be set to be between 15 degrees and 60 degrees, an oil collecting cavity 7 is provided between adjacent oil receiving blades 6 for passing oil, and the oil collecting cavity 7 communicates the outer wall outer space of the sleeve 1 and the flow distribution portion 3. When the rotating shaft 400 drives the sleeve 1 to rotate, the oil collecting blade 6 is driven to rotate, and oil is pumped into the flow distribution part 3 through the oil collecting cavity 7.

In a specific embodiment, receive oily blade 6's concrete structure including blade root 61, blade middle part 62 and the blade head 63 that connect gradually, blade root 61 sets up the right lamellar body structure for the slope, blade middle part 62 cross-section is circular arc type lamellar body structure, conveniently introduces blade root 61 position with fluid from blade head 63, the tip cross-section of blade head 63 is the acute angle, reduces the resistance when receiving oily blade 6 high-speed the removal, and the tip of blade head 63 can also set up the fillet, and is preferred, and the main part thickness of receiving oily blade 6 is 1 millimeter to 3 millimeters, and it is 5 millimeters to 20 millimeters to receive oily sword circumferential width, also can set up other sizes of free setting according to the diameter of pivot or sleeve pipe 1.

In another embodiment, the surface of the blade middle part 62 facing the side of the center of the casing 1 is provided with an axial flow collecting groove 8 for collecting oil, and the axial flow collecting groove 8 is opened along the axial direction of the casing 1, one end of the axial flow collecting groove 8 is communicated with the flow distribution part 3, and the axial flow collecting groove 8 is also communicated with the oil collecting cavity 7. The oil collected by the oil collecting cavity 7 enters the axial flow collecting groove 8, and the oil in the axial flow collecting groove 8 can flow in the axial direction of the sleeve 1 to the flow distribution part 3.

The angle between the blade root 61 and the blade middle 62 is an obtuse angle, and the inner side surface of the blade root 61 forms a lateral stop surface of the axial header tank 8. The oil collecting blade 6 rotates in the direction of the knife edge to collect a part of the lubricating oil into the blade root 61, and the other part of the lubricating oil flows backwards along the stop surface into the next oil collecting blade 6.

The oil collecting part 2 further comprises a pair of annular baffles 5, the oil collecting blades 6 are arranged between the annular baffles 5, an oil collecting cavity 7 is formed between the two annular baffles 5 and the two adjacent oil collecting blades 6, and the outer edges of the annular baffles 5 are higher than the oil collecting blades 6. The two annular baffles 5 are parallel to each other, perpendicular to the axial direction or at an angle, which may be set between 60 and 120 degrees. The thickness of the annular baffles 5 can be equal or unequal, and the thickness of the annular baffles 5 can be set between 1 mm and 10 mm.

In a specific embodiment, the flow distribution portion 3 includes a circumferential oil collecting groove 31, a plurality of axial flow dividing grooves 32 and a plurality of flow distribution holes 33 which are arranged on the inner wall of the sleeve 1, the circumferential oil collecting groove 31 is arranged on the inner wall of the sleeve 1, the axial flow dividing grooves 32 are arranged on the axial direction of the sleeve 1, the flow distribution holes 33 are uniformly arranged on the bearing installation portion 4, the circumferential oil collecting groove 31 is arranged between the axial flow collecting groove 8 and the axial flow dividing grooves 32, and is communicated with each axial flow collecting groove 8 and each axial flow dividing groove 32. The circumferential oil sump 31 mainly functions to collect the lubricating oil in the circumferential direction and supply the lubricating oil to the axial flow dividing groove 32 on average. The circumferential oil sump 31 may be sized to have a radius 1 mm to 2 mm greater than the maximum radius of the axial sump 8 and a width 2 mm to 5 mm. Each of the axial divided flow grooves 32 communicates with at least one orifice 33, and the orifice 33 is also communicated to a bearing inner ring mounting surface on the bearing mounting portion 4 for transporting the lubricating oil in the circumferential oil collecting groove 31 to a position of a bearing inner ring.

The axial splitter 32 may be semi-circular, rectangular, triangular, etc. and the length of the axial splitter 32 exceeds two thirds of the thickness of the bearing 200.

Example two

Referring to fig. 1 and 4, a bearing oil supply device includes a nozzle 100, a bearing 200 and the bearing oil supply sleeve 300, a nozzle of the nozzle 100 faces the oil receiving portion 2, the bearing 200 is installed on the bearing installation portion 4, a plurality of oil supply holes 201 are further formed in an inner ring of the bearing 200, one end of each oil supply hole 201 is communicated with the flow distribution portion 3, and the other end of each oil supply hole 201 is communicated with the outer ring surface of the inner ring of the bearing 200. The diameter of the oil supply hole 201 may be set to 0.5 mm to 1 mm as an example. The number of the oil supply holes 201 may be set between 6 and 24. Other sizes or other numbers may be provided as desired.

In another embodiment, the inner ring of the bearing 200 is further provided with a ring of bearing oil grooves 202, and the flow distribution portion 202 is communicated with each oil supply hole 201 through the bearing oil grooves 202. The bearing oil sump 202 may be illustratively sized to have a width of 2 mm to 3 mm and a height of 1 mm to 1.5 mm, and its main function is to collect the oil entering through the distribution holes 33 and distribute the oil evenly in the circumferential direction to the oil supply holes 201 of the bearing 200.

The working principle of the bearing oil supply sleeve 300 of the present disclosure is as follows:

1. when the oil collecting blade 6 rotates at a high speed along with the rotating shaft 400, the lubricating oil is sprayed out from the nozzle 100 at a certain speed and angle and is injected into the oil collecting part 2;

2. the oil collecting blade 6 rotates along the direction of the knife edge to collect a part of lubricating oil into the blade root 61, and at the position, due to the stopping and centrifugal effects of the stopping surface of the blade root 61, the lubricating oil enters the axial collecting groove 8, and the other part of the lubricating oil flows into the next oil collecting blade 6 along the stopping surface of the blade root 61;

3. the lubricating oil entering the oil collecting blade 6 is firstly input into a circumferential oil collecting groove 31 through the axial oil collecting groove 8;

4. the lubricating oil entering the circumferential oil collecting groove 31 is conveyed to the bottom position of the inner ring of the bearing 200 through the axial flow dividing groove 32;

5. the lubricating oil enters a bearing oil collecting groove 202 on the bearing 200 through a distributing hole 33 at the bottom of the axial flow distribution groove 32 under the action of centrifugal force;

6. under the action of centrifugal force, lubricating oil enters the bearing raceway from a bearing oil collecting groove 202 and an oil supply hole 201 on the bearing 200;

7. the lubricating oil entering the bearing rolls to lubricate and cool the bearing rollers, the inner ring, the retainer and the outer ring.

This openly collects the fluid of receiving oil portion position through oil portion, transmits fluid to the joining in marriage class portion, joins in marriage class portion and shunts the fluid of collecting to the position of bearing installation department, transmits fluid to the inner ring of bearing, realizes the fuel feeding to the bearing inner ring.

In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.

Claims

1. A bearing oil supply sleeve is characterized in that, comprises sleeve, and described sleeve is provided with oil collecting part, distribution part and bearing installation part:

The oil collecting part is arranged on the outer wall of the casing, and is used for collecting the oil at the position of the oil collecting part;

the bearing mounting part is arranged on the outer wall of the sleeve for mounting the inner ring of the bearing;

The flow distribution part is arranged inside the pipe wall of the casing or on the inner wall of the casing, and is used for diverting the oil collected by the oil collecting part to the bearing installation part.

2 . The bearing oil supply bushing according to claim 1 , wherein the oil scavenging part is of an impeller type structure, comprising a plurality of oil scavenging blades evenly arranged along the circumferential direction of the casing, and the oil scavenging blades are opposite to each other. 3 . The casing is arranged radially obliquely, and an oil collecting cavity is provided between the adjacent oil scavenging blades, and the oil collecting cavity communicates with the outer space of the outer wall of the casing and the flow distribution part.

3. The bearing oil supply bushing according to claim 2, wherein the oil scavenger blade comprises a blade root, a blade middle and a blade head which are connected in sequence, and the section of the middle of the blade is an arc-shaped sheet body structure , the end section of the blade head is an acute angle.

4 . The bearing oil supply sleeve according to claim 3 , wherein the surface of the middle of the blade facing the center of the sleeve is provided with an axial collecting groove, and the axial collecting groove is along the The casing is opened in the axial direction, one end of the axial collecting groove is communicated with the distribution part, and the axial collecting groove is also communicated with the oil collecting cavity.

5 . The bearing oil supply sleeve according to claim 4 , wherein the angle between the blade root and the middle of the blade is an obtuse angle, and the inner surface of the blade root forms an axial collecting groove laterally. 6 . stop surface.

6. The bearing oil supply bushing according to any one of claims 2-4, wherein the oil scavenger further comprises a pair of annular baffles, and the oil scavenger blade is mounted on the pair of annular baffles Between the plates, the outer edge of the annular baffle is higher than the oil skimming blade.

7 . The bearing oil supply sleeve according to claim 1 , wherein the distribution part comprises a circumferential oil collecting groove, a plurality of axial distribution grooves and a plurality of distribution holes arranged on the inner wall of the sleeve; The circumferential oil collecting groove is provided with a circle along the inner wall of the sleeve, the axial distribution groove is disposed along the axial direction of the sleeve, the distribution holes are evenly arranged on the bearing installation part, and the circumferential oil collecting groove is arranged along the axial direction of the sleeve. In communication with each of the axial distribution grooves, each of the axial distribution grooves is in communication with at least one flow distribution hole, and the flow distribution hole is also communicated with the bearing inner ring mounting surface on the bearing mounting portion.

8 . The bearing oil supply bushing according to claim 7 , wherein the length of the axial distribution groove exceeds two-thirds of the thickness of the bearing. 9 .

9. A bearing oil supply device, characterized in that it comprises a nozzle, a bearing and the bearing oil supply sleeve according to claim 1, the nozzle of the nozzle faces the oil receiving part, and the bearing is mounted on the bearing On the mounting part, the inner ring of the bearing is also provided with a plurality of oil supply holes, one end of the oil supply hole is communicated with the flow distribution part, and the other end of the oil supply hole is connected with the inner ring of the bearing. The outer ring surface is connected.

10 . The bearing oil supply device according to claim 9 , wherein the inner ring of the inner ring of the bearing is further provided with a bearing oil collecting groove, and the distribution portion is communicated with each oil supply hole through the bearing oil collecting groove. 11 . .