CN115059692B - Supercritical carbon dioxide working medium separation type impeller lubricating structure - Google Patents
Supercritical carbon dioxide working medium separation type impeller lubricating structure Download PDFInfo
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- CN115059692B CN115059692B CN202210608084.1A CN202210608084A CN115059692B CN 115059692 B CN115059692 B CN 115059692B CN 202210608084 A CN202210608084 A CN 202210608084A CN 115059692 B CN115059692 B CN 115059692B
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- oil
- bearing
- shaft sleeve
- pull plate
- shaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/6659—Details of supply of the liquid to the bearing, e.g. passages or nozzles
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a supercritical carbon dioxide working medium separated impeller lubricating structure, which comprises a blade disc, wherein blades are uniformly distributed on the blade disc along the radial direction, and a central shaft is arranged in the middle of the blade disc, and is characterized in that: the middle part of the leaf disc is fixedly provided with a shaft sleeve, the periphery of the middle shaft is rotationally sleeved to the inner ring of the shaft sleeve through a first bearing and a second bearing respectively, a medium space is formed by the first side of the first bearing, the first side of the second bearing, the inner ring of the shaft sleeve and the periphery of the middle shaft, the side wall of the shaft sleeve is provided with an oil way, and the oil way is communicated into the medium space. According to the supercritical carbon dioxide working medium separated impeller lubricating structure, the pulling plate is pulled to move away from the shaft sleeve, the spring is stretched, the oil injection block slides rightwards, the sealing ring is separated from the oil path, the oil guide groove is moved out of the oil path for a certain distance, lubricating oil can be extruded and injected into the oil path through the oil guide groove, the lubricating oil flows into the shaft sleeve through the oil path, and the lubricating oil is contacted with the shaft and the bearing for lubrication.
Description
Technical Field
The invention belongs to the field of fluid machinery, and particularly relates to a supercritical carbon dioxide working medium separation type impeller lubricating structure.
Background
In some special conditions, separate impellers are required. Such as supercritical carbon dioxide working fluid power generation devices, require the use of such a split impeller. The separated impeller is that the rotation speed of the impeller is different from that of the shaft, or the impeller rotates, and the shaft does not rotate. Impeller torque is not transferred to the shaft. Different flow passages are arranged in the impeller to exchange energy, and bearings are required to be arranged between the impeller and the shaft because the rotation speeds of the impeller and the shaft are different. The space between the impeller and the shaft is usually small, so that the problem that the bearing is difficult to lubricate and maintain is caused, and therefore, the supercritical carbon dioxide working medium separated impeller lubricating structure is provided for solving the problem.
Disclosure of Invention
In view of the above, the invention aims to provide a supercritical carbon dioxide working medium separation type impeller lubrication structure so as to solve the problems that in the prior art, the space between an impeller and a shaft is small, and a bearing is not easy to lubricate and maintain.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
the utility model provides a supercritical carbon dioxide working medium disconnect-type impeller lubricating structure, includes the impeller, radially equipartition blade on the impeller, the impeller middle part sets up the axis, the fixed axle sleeve that sets up in impeller middle part, the axis periphery is cup jointed to the axle sleeve inner circle through first bearing and second bearing rotation respectively, and the first side of first bearing, the first side of second bearing, axle sleeve inner circle and axis periphery form the medium space, be equipped with the oil circuit on the lateral wall of axle sleeve, the oil circuit communicates in the medium space.
Further, the second side of the first bearing and the second side of the second bearing are respectively provided with a sealing gasket, and the sealing gaskets are used for preventing the medium in the medium space from overflowing from the first bearing or the second bearing.
Further, the oil inlet end of the oil way is provided with a pull plate, the transverse street surface of the pull plate is of a T-shaped structure, the first end of the pull plate is clamped to one end of the shaft sleeve, the second end of the pull plate is positioned in the oil way, and the periphery of the pull plate is connected to the inner wall of the oil way in a sealing way.
Further, the oil inlet end of the oil way is provided with a sealing ring groove, and the periphery of the pull plate is connected to the sealing ring groove in a sealing way through a sealing ring.
Further, the second end of arm-tie is equipped with leads the oil groove, and the income oily end of oil circuit communicates to oiling equipment through leading the oil groove, and the arm-tie can slide along the oil circuit, and the arm-tie under the slip state is the structure of opening and shutting of oiling equipment and oil circuit.
Further, the cross section of the oil guide groove is in a trapezoid structure.
Further, the first end of the pulling plate is elastically connected to one end of the shaft sleeve through a spring.
Further, be equipped with a plurality of blind holes on the axle sleeve, every blind hole internal fixation installs a fixed block, and the one end of fixed block is opened and is dismantled the one end of being connected to the commentaries on classics piece, and the other end of changeing the piece is through spring fixed connection to the first end of arm-tie.
Compared with the prior art, the supercritical carbon dioxide working medium separated impeller lubricating structure has the following beneficial effects:
(1) According to the supercritical carbon dioxide working medium separated impeller lubricating structure, the pulling plate is pulled to move away from the shaft sleeve, the spring is stretched, the oil injection block slides rightwards, the sealing ring is separated from the oil path, the oil guide groove is moved out of the oil path for a certain distance, lubricating oil can be extruded and injected into the oil path through the oil guide groove, the lubricating oil flows into the shaft sleeve through the oil path, and the lubricating oil is contacted with the shaft and the bearing for lubrication.
(2) According to the supercritical carbon dioxide working medium separated impeller lubricating structure, the oil injection block is pulled to be inserted into the oil path through the elasticity of the spring, so that the sealing ring is reset to block the oil path, lubricating oil in the shaft sleeve is prevented from flowing out, the lubricating oil is stored in the shaft sleeve, and bearing lubrication is facilitated.
(2) According to the supercritical carbon dioxide working medium separation type impeller lubricating structure, the fixed block is rotationally connected with the rotating block, the fixed block is rotationally forced to move rightwards to separate from the shaft sleeve, the pull plate can be moved rightwards until the oil injection block is separated from the oil way, the sliding sealing ring is separated from the oil injection block, and the sealing ring is detached and replaced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a supercritical carbon dioxide working medium separation type impeller lubrication structure according to an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of the shaft sleeve and the bottom bracket according to the embodiment of the invention;
FIG. 3 is a schematic cross-sectional view of a sleeve and bottom bracket engaged with one another in accordance with an embodiment of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3A;
fig. 5 is a partial enlarged view of a in an opened state of an oil passage according to an embodiment of the present invention.
Reference numerals illustrate:
1-leaf discs; 2-leaf blades; 3-a central shaft; 4-a first bearing; 5-sealing the pad; 6-shaft sleeve; 7-pulling plates; 8-an oil way; 9-a sealing ring; 10-an oil guide groove; 11-a fixed block; 12-turning blocks; 13-spring.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication 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 in a specific case.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
As shown in fig. 1-5, the supercritical carbon dioxide working medium separation type impeller lubricating structure comprises a blade disc 1, blades 2 are uniformly distributed on the blade disc 1 along the radial direction, a central shaft 3 is arranged in the middle of the blade disc 1, a shaft sleeve 6 is fixedly arranged in the middle of the blade disc 1, the periphery of the central shaft 3 is rotationally sleeved to the inner ring of the shaft sleeve 6 through a first bearing 4 and a second bearing respectively, a medium space is formed by the first side of the first bearing 4, the first side of the second bearing, the inner ring of the shaft sleeve 6 and the periphery of the central shaft 3, an oil way 8 is arranged on the side wall of the shaft sleeve 6, and the oil way 8 is communicated into the medium space.
The two sides of the sleeve 6 are blocked with the shaft by means of the sealing gasket 5, the sealing gasket 5 does not interfere with the relative movement of the shaft and the sleeve 6, in this embodiment the sealing gasket 5 is mounted on the second side of the first bearing 4 and the second side of the second bearing, respectively, the sealing gasket 5 being used to prevent the medium in the medium space from overflowing outwards from the first bearing 4 or the second bearing.
The oil inlet end of the oil way 8 is provided with a pull plate 7, the cross street surface of the pull plate 7 is of a T-shaped structure, the first end of the pull plate 7 is clamped to one end of the shaft sleeve 6, the second end of the pull plate 7 is positioned in the oil way 8, and the periphery of the pull plate 7 is connected to the inner wall of the oil way 8 in a sealing mode.
The oil inlet end of the oil way 8 is provided with a sealing ring groove, and the periphery of the pull plate 7 is connected to the sealing ring groove in a sealing way through a sealing ring 9.
The second end of arm-tie 7 is equipped with and leads oil groove 10, lead the transversal trapezium structure that personally submits of oil groove 10, the income oily end of oil circuit 8 communicates to oiling equipment through leading oil groove 10, and arm-tie 7 can slide along oil circuit 8, arm-tie 7 under the slip state is the structure that opens and shuts of oiling equipment and oil circuit 8, move away from axle sleeve 6 through pulling arm-tie 7, make sealing washer 9 break away from oil circuit 8, lead oil groove 10 and remove oil a distance, at this moment can be with leading oil groove 10 extrusion injection oil circuit 8, make lubricating oil flow into axle sleeve 6 by oil circuit 8, make lubricating oil and axle, bearing contact, lubricate, promote pulling arm-tie 7, arm-tie 7 inserts in the oil circuit 8, make sealing washer 9 reset and block up oil circuit 8, thereby prevent that lubricating oil in the axle sleeve 6 from flowing, make lubricating oil store between lubricated bearing and the axle in axle sleeve 6.
As a technical optimization scheme of the invention, the first end of the pull plate 7 is elastically connected to one end of the shaft sleeve 6 through the spring 13, a plurality of blind holes are formed in the shaft sleeve 6, a fixed block 11 is fixedly arranged in each blind hole, one end of the fixed block 11 can be detachably connected to one end of the rotating block 12 in a rotating manner, and the other end of the rotating block 12 is fixedly connected to the first end of the pull plate 7 through the spring 13.
Working process of supercritical carbon dioxide working medium separation type impeller lubricating structure "
The two sides of the two bearings are blocked by the sealing gaskets 5, the pulling plate 7 is pulled to move away from the shaft sleeve 6, the spring 13 is stretched, the pulling plate 7 slides rightwards, the sealing ring 9 is separated from the oil path 8, the oil guide groove 10 is moved out of the oil path 8 for a certain distance, at the moment, lubricating oil can be extruded and injected into the oil path 8 through the oil guide groove 10, the lubricating oil flows into the shaft sleeve 6 through the oil path 8, the lubricating oil is contacted with the shaft and the bearing for lubrication, the pulling plate 7 is stopped, the pulling plate 7 is pulled by the elastic force of the spring 13 to be inserted into the oil path 8, the sealing ring 9 is reset to block the oil path 8, and therefore, the lubricating oil in the shaft sleeve 6 is prevented from flowing out, and the lubricating oil is stored between the lubricating bearing and the shaft in the shaft sleeve 6.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (3)
1. The utility model provides a supercritical carbon dioxide working medium disconnect-type impeller lubricating structure, includes impeller (1), radially equipartition blade (2) on impeller (1), and impeller (1) middle part sets up axis (3), its characterized in that: the middle part of the leaf disc (1) is fixedly provided with a shaft sleeve (6), the periphery of the central shaft (3) is rotationally sleeved to the inner ring of the shaft sleeve (6) through a first bearing (4) and a second bearing respectively, a medium space is formed by the first side of the first bearing (4), the first side of the second bearing, the inner ring of the shaft sleeve (6) and the periphery of the central shaft (3), the side wall of the shaft sleeve (6) is provided with an oil way (8), and the oil way (8) is communicated into the medium space;
the oil inlet end of the oil way (8) is provided with a pull plate (7), the cross-street surface of the pull plate (7) is of a T-shaped structure, the first end of the pull plate (7) is clamped to one end of the shaft sleeve (6), the second end of the pull plate (7) is positioned in the oil way (8), and the periphery of the pull plate (7) is connected to the inner wall of the oil way (8) in a sealing way;
the oil inlet end of the oil way (8) is provided with a sealing ring groove, and the periphery of the pull plate (7) is connected to the sealing ring groove in a sealing way through a sealing ring (9);
the second end of the pull plate (7) is provided with an oil guide groove (10), the oil inlet end of the oil path (8) is communicated to oil injection equipment through the oil guide groove (10), the pull plate (7) can slide along the oil path (8), and the pull plate (7) in a sliding state is an opening and closing structure of the oil injection equipment and the oil path (8);
the first end of the pulling plate (7) is elastically connected to one end of the shaft sleeve (6) through a spring (13);
be equipped with a plurality of blind holes on axle sleeve (6), every blind hole internal fixation installs a fixed block (11), and the one end of fixed block (11) is opened and is dismantled the one end of being connected to commentaries on classics piece (12), and the other end of changeing piece (12) passes through spring (13) fixed connection to the first end of arm-tie (7).
2. The supercritical carbon dioxide working medium separation type impeller lubricating structure according to claim 1, wherein: a sealing gasket (5) is respectively arranged on the second side of the first bearing (4) and the second side of the second bearing, and the sealing gasket (5) is used for preventing the medium in the medium space from overflowing outwards from the first bearing (4) or the second bearing.
3. The supercritical carbon dioxide working medium separation type impeller lubricating structure according to claim 1, wherein: the cross section of the oil guide groove (10) is in a trapezoid structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210608084.1A CN115059692B (en) | 2022-05-31 | 2022-05-31 | Supercritical carbon dioxide working medium separation type impeller lubricating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210608084.1A CN115059692B (en) | 2022-05-31 | 2022-05-31 | Supercritical carbon dioxide working medium separation type impeller lubricating structure |
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| CN115059692A CN115059692A (en) | 2022-09-16 |
| CN115059692B true CN115059692B (en) | 2023-07-25 |
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| CN202210608084.1A Active CN115059692B (en) | 2022-05-31 | 2022-05-31 | Supercritical carbon dioxide working medium separation type impeller lubricating structure |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840667A (en) * | 2014-04-12 | 2016-08-10 | 方义飞 | Engineering machine, mining engineering machine and bearing pedestal oil cavity cleaning and lubricating system of engineering machine and mining engineering machine |
| CN212839002U (en) * | 2020-06-12 | 2021-03-30 | 江苏东煌轨道交通装备有限公司 | Bearing seat for sealing end face of motor shaft of traction engine base |
| CN216429943U (en) * | 2021-10-29 | 2022-05-03 | 山东宽量节能环保技术有限公司 | Bearing cavity sealing structure for limiting rotation of roots vacuum pump |
| CN114427575A (en) * | 2020-10-29 | 2022-05-03 | 江苏亚威机床股份有限公司 | Bearing sealing mechanism of stretch bending straightener |
-
2022
- 2022-05-31 CN CN202210608084.1A patent/CN115059692B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840667A (en) * | 2014-04-12 | 2016-08-10 | 方义飞 | Engineering machine, mining engineering machine and bearing pedestal oil cavity cleaning and lubricating system of engineering machine and mining engineering machine |
| CN212839002U (en) * | 2020-06-12 | 2021-03-30 | 江苏东煌轨道交通装备有限公司 | Bearing seat for sealing end face of motor shaft of traction engine base |
| CN114427575A (en) * | 2020-10-29 | 2022-05-03 | 江苏亚威机床股份有限公司 | Bearing sealing mechanism of stretch bending straightener |
| CN216429943U (en) * | 2021-10-29 | 2022-05-03 | 山东宽量节能环保技术有限公司 | Bearing cavity sealing structure for limiting rotation of roots vacuum pump |
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| Publication number | Publication date |
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| CN115059692A (en) | 2022-09-16 |
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