CN114483931B - Oil way device and use method - Google Patents
Oil way device and use method Download PDFInfo
- Publication number
- CN114483931B CN114483931B CN202210179108.6A CN202210179108A CN114483931B CN 114483931 B CN114483931 B CN 114483931B CN 202210179108 A CN202210179108 A CN 202210179108A CN 114483931 B CN114483931 B CN 114483931B
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- oil
- pipeline
- sliding bearing
- pressure
- lubricating oil
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000003921 oil Substances 0.000 claims abstract description 241
- 239000010687 lubricating oil Substances 0.000 claims abstract description 104
- 238000005461 lubrication Methods 0.000 claims abstract description 58
- 230000002159 abnormal effect Effects 0.000 claims abstract description 24
- 230000001050 lubricating effect Effects 0.000 claims abstract description 18
- 239000000314 lubricant Substances 0.000 claims description 18
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 5
- 230000008602 contraction Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
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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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0467—Elements of gearings to be lubricated, cooled or heated
- F16H57/0469—Bearings or seals
- F16H57/0471—Bearing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses an oil way device and a use method thereof, wherein the oil way device comprises: the pipeline group is respectively connected with a lubrication system of the gear box and the sliding bearing and is used for conveying lubricating oil in the lubrication system between an inner ring and an outer ring of the sliding bearing so as to form an oil film; the oil storage cavity is connected with the pipeline group and used for storing lubricating oil; and the energy accumulator is arranged in the oil storage cavity and used for storing and releasing energy so as to convey the lubricating oil in the oil storage cavity to a position between the inner ring and the outer ring of the sliding bearing when the lubricating system is abnormal. According to the invention, the energy accumulator can store energy when the lubrication system is normal and release energy when the lubrication system is abnormal, and the lubricating oil in the oil storage cavity can be conveyed between the inner ring and the outer ring of the sliding bearing through the pipeline group when the energy accumulator releases energy, so that the sliding bearing can be lubricated when the lubrication system is abnormal, and the reliability of the sliding bearing is improved.
Description
Technical Field
The invention relates to the technical field of wind power generation, in particular to an oil way device for a sliding bearing and a use method thereof.
Background
The gearbox is widely applied to a wind generating set, and can be used for transmitting low-speed large torque generated by a wind wheel under the action of wind power to a generator after the speed of the wind wheel is increased by a gear, so that the generator obtains the rotating speed required by power generation. At present, the bearings in the gear box mainly adopt rolling bearings, and sliding bearings are rarely used, because unstable running conditions often occur in the gear box and the sliding bearings can have temporary extremely low sliding speeds under extreme loads, and the application conditions of the sliding bearings cannot be met.
With the popularization of large megawatt (> 5 MW) gearboxes in the wind power industry and the increase of the torque density of the wind power gearboxes, sliding bearings are gradually applied to the planet gears of the gearboxes. However, the lubrication systems of existing gearboxes are often mature systems designed for rolling bearings; when the planet wheel adopts the sliding bearing, based on the characteristics of complex working condition of the wind driven generator, long service life requirement of the gear box, adoption of a bevel gear and the like, the running condition of the sliding bearing becomes bad, and the lubricating system of the gear box is provided with higher requirements. The lubrication system of the existing gearbox cannot operate when the wind field is powered off and cannot meet the operation requirement of the planet wheel sliding bearing, so that the lubrication mode of the gearbox is necessary to be improved.
Disclosure of Invention
The invention aims to provide an oil way device and a use method thereof, wherein the energy accumulator can store energy when a lubrication system is normal and release energy when the lubrication system is abnormal, so that the function of a sliding bearing can be realized when the lubrication system is abnormal.
In order to achieve the above purpose, the present invention is realized by the following technical scheme:
an oil circuit device is positioned in a planet wheel pin shaft of the gear box; the planetary gear pin shaft is rotationally connected with the planetary gear through a sliding bearing, the inner ring of the sliding bearing is fixedly connected with the planetary gear pin shaft, and the outer ring of the sliding bearing is fixedly connected with the planetary gear; the oil passage device includes:
the pipeline group is respectively connected with a lubrication system of the gear box and the sliding bearing and is used for conveying lubricating oil in the lubrication system to a position between an inner ring and an outer ring of the sliding bearing so as to form an oil film;
the oil storage cavity is connected with the pipeline group and used for storing lubricating oil;
and the energy accumulator is arranged in the oil storage cavity and used for storing and releasing energy so as to convey the lubricating oil in the oil storage cavity to a position between the inner ring and the outer ring of the sliding bearing when the lubricating system is abnormal.
Preferably, the pipe group includes:
the oil inlet of the first pipeline is connected with the lubricating system, and the oil outlet of the first pipeline penetrates through the inner ring of the sliding bearing and is used for conveying lubricating oil between the inner ring and the outer ring of the sliding bearing;
the oil inlet of the second pipeline is connected with the oil inlet of the first pipeline;
and the oil inlet of the third pipeline is connected with the oil outlet of the second pipeline, and the oil outlet of the third pipeline is connected with the oil storage cavity and is used for conveying lubricating oil to the oil storage cavity.
Preferably, the pipe group further comprises: a fourth pipeline including a first port, a second port, and a third port; and the first port of the fourth pipeline is connected with the first pipeline, the second port is connected with the second pipeline, and the third port is connected with the third pipeline, so that the first pipeline, the second pipeline and the third pipeline are communicated.
Preferably, the pipe group further comprises:
the first one-way valve is arranged on the first pipeline and is positioned between the oil inlet of the first pipeline and the first port of the fourth pipeline and used for controlling the on-off of the first pipeline and the flow direction of lubricating oil in the first pipeline;
the second one-way valve is arranged on the third pipeline and is positioned between the oil inlet of the third pipeline and the third port of the fourth pipeline and used for controlling the on-off of the third pipeline and the flow direction of lubricating oil in the third pipeline; and
the pressure switch is arranged on the fourth pipeline and is positioned at the junction of the first port and the second port of the fourth pipeline and used for controlling the on-off of the fourth pipeline.
Preferably, the first one-way valve enables lubricating oil to flow along the direction from the oil inlet to the oil outlet of the first pipeline;
the second one-way valve enables lubricating oil to flow along the direction from the oil inlet to the oil outlet of the third pipeline.
Preferably, the opening pressure of the first one-way valve is greater than the opening pressure of the second one-way valve;
the opening pressure of the second one-way valve is larger than the closing pressure of the pressure switch.
Preferably, the accumulator comprises:
the piston is positioned in the oil storage cavity and is in sliding connection with the inner side wall of the oil storage cavity;
the first end of the telescopic component is fixedly connected with one end of the piston, which is far away from the third pipeline, and the second end of the telescopic component is fixedly connected with one end of the oil storage cavity, which is far away from the third pipeline, and is used for storing energy by compression when the lubricating system is normal and releasing energy by extension when the lubricating system is abnormal; the first end and the second end of the telescopic component are oppositely arranged;
the telescopic component releases energy to enable the piston to convey lubricating oil in the oil storage cavity to a position between an inner ring and an outer ring of the sliding bearing through the third pipeline, the fourth pipeline and the first pipeline.
In another aspect, the present invention further provides a method for using the oil circuit device, including:
enabling a lubrication system of the gear box to convey lubricating oil to the pipeline group;
causing the tube set to deliver lubricant to the reservoir to store lubricant and cause the accumulator to store energy; and
the pipe group is made to convey lubricating oil between the inner ring and the outer ring of the sliding bearing to form an oil film.
Preferably, the usage method of the oil circuit device further comprises:
and enabling the energy accumulator to release energy when the lubricating system is abnormal so as to convey the lubricating oil in the oil storage cavity to a position between the inner ring and the outer ring of the sliding bearing through the pipeline group.
Preferably, the step of causing the pipe group to deliver the lubricating oil to the oil reservoir includes:
the oil pressure between the oil inlet of the first pipeline and the first one-way valve is smaller than the opening pressure of the first one-way valve, the oil pressure between the oil inlet of the third pipeline and the second one-way valve is smaller than the opening pressure of the second one-way valve, and the oil pressure between the oil inlet of the second pipeline and the pressure switch is larger than the closing pressure of the pressure switch so as to close the pressure switch and block the fourth pipeline;
the oil pressure between the first pipeline oil inlet and the first one-way valve is smaller than the opening pressure of the first one-way valve, and the oil pressure between the third pipeline oil inlet and the second one-way valve is larger than the opening pressure of the second one-way valve, so that the second one-way valve is opened, the third pipeline is conducted, and lubricating oil flows into the oil storage cavity along the direction from the third pipeline oil inlet to the oil outlet; and
and enabling the lubricating oil flowing into the oil storage cavity to compress the telescopic part to a first preset position through the piston so as to store energy.
Preferably, the step of causing the tube set to deliver the lubricating oil between the inner ring and the outer ring of the sliding bearing includes:
the oil pressure between the oil inlet of the first pipeline and the first one-way valve is larger than the opening pressure of the first one-way valve, so that the first one-way valve is opened, the first pipeline is conducted, and lubricating oil flows into the space between the inner ring and the outer ring of the sliding bearing along the direction from the oil inlet to the oil outlet of the first pipeline.
Preferably, the step of causing the accumulator to release energy when the lubrication system is abnormal comprises:
the telescopic part applies pressure to the lubricating oil in the oil storage cavity through the piston so as to stretch to a second preset position, and the lubricating oil in the oil storage cavity flows into a third port of the fourth pipeline through the third pipeline;
the oil pressure between the oil inlet of the second pipeline and the pressure switch is smaller than the closing pressure of the pressure switch so as to open the pressure switch, the fourth pipeline is conducted, and lubricating oil flows into the first pipeline along the direction from the third port to the first port of the fourth pipeline; and
and enabling lubricating oil to flow into the space between the inner ring and the outer ring of the sliding bearing through the oil outlet of the first pipeline.
Compared with the prior art, the invention has at least one of the following advantages:
according to the oil way device and the use method, when the lubrication system of the gear box normally operates, lubricating oil can be conveyed to the oil storage cavity through the pipeline group to store the lubricating oil, the energy accumulator stores energy, and after the oil storage cavity is filled with the lubricating oil, the lubricating oil can be conveyed between the inner ring and the outer ring of the sliding bearing through the pipeline group to form an oil film, so that a conventional lubrication function is realized. When the lubricating system is abnormal, the energy accumulator is enabled to release energy, and lubricating oil in the oil storage cavity can be conveyed between the inner ring and the outer ring of the sliding bearing through the pipeline group, so that the sliding bearing can be lubricated when the lubricating system is abnormal, and the reliability of the sliding bearing is improved.
According to the invention, the first one-way valve can enable the lubricating oil in the first pipeline to flow along one way so as to prevent the lubricating oil in the first pipeline from flowing back to the lubricating system; the second one-way valve can enable the lubricating oil in the third pipeline to flow unidirectionally so as to prevent the lubricating oil in the third pipeline from flowing back to the lubricating system.
According to the invention, the pressure switch can be controlled to be turned on or off through oil pressure, so that the on-off of the fourth pipeline is controlled, and the first pipeline and the third pipeline are controlled to be connected or disconnected through the fourth pipeline.
The telescopic component can store energy through compression when the lubrication system is normal and release energy through extension when the lubrication system is abnormal; and when the telescopic part releases energy, the lubricating oil in the oil storage cavity can be conveyed to between the inner ring and the outer ring of the sliding bearing through the third pipeline, the fourth pipeline and the first pipeline through the piston, so that the sliding bearing can be lubricated when a lubricating system is abnormal.
Drawings
Fig. 1 is a schematic structural diagram of an oil path device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram showing the flow direction of lubricating oil when a pressure switch is closed in an oil path device according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating a flow direction of lubricant when a second check valve is opened in an oil path device according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a flow direction of lubricating oil when a first check valve is opened in an oil path device according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a lubrication flow direction when a lubrication system is abnormal in an oil path device according to an embodiment of the present invention.
Detailed Description
The following describes an oil path device and a use method thereof in further detail with reference to the drawings and the detailed description. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for the purpose of facilitating and clearly aiding in the description of embodiments of the invention. For a better understanding of the invention with objects, features and advantages, refer to the drawings. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that any modifications, changes in the proportions, or adjustments of the sizes of structures, proportions, or otherwise, used in the practice of the invention, are included in the spirit and scope of the invention which is otherwise, without departing from the spirit or essential characteristics thereof.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Referring to fig. 1 to 5, the present embodiment provides an oil path device, which is located in a planetary pin 100 of a gear box; the planetary gear pin shaft 100 is rotationally connected with the planetary gear 102 through a sliding bearing 101, an inner ring of the sliding bearing 101 is fixedly connected with the planetary gear pin shaft 100, and an outer ring of the sliding bearing 101 is fixedly connected with the planetary gear 102; the oil passage device includes: a pipe group 201 connected to the lubrication system 105 of the gear box and the sliding bearing 101, respectively, for conveying the lubricating oil in the lubrication system 105 between the inner ring and the outer ring of the sliding bearing 101 to form an oil film; a storage chamber 202 connected to the pipe group 201 for storing lubricating oil; an accumulator 203 provided in the oil storage chamber 202 for storing and releasing energy to deliver the lubricating oil in the oil storage chamber 202 between the inner ring and the outer ring of the sliding bearing 101 when the lubrication system 105 is abnormal.
Specifically, the lubrication principle of the sliding bearing 101 is to form an oil film between an inner ring and an outer ring of the sliding bearing 101 by lubricating oil; the oil film can bear surface pressure, so that the excessive temperature between the inner ring and the outer ring of the sliding bearing 101 is prevented from generating friction damage. In addition, the lubricating oil flowing into the space between the inner ring and the outer ring of the sliding bearing 101 flows back to the oil sump of the gear box along the oil return pipeline, so that the oil film can also play a role in cooling, but the invention is not limited thereto.
In this embodiment, the planetary pin 100 may be fixed on a planetary rotating frame 103, and a thrust bearing 104 may be further disposed between the planetary rotating frame 103 and the planetary 102. More specifically, after the lubricating oil flows out of the sliding bearing 101, a part of the lubricating oil may flow back to the oil sump of the gearbox along the oil return line, and another part of the lubricating oil may flow between the inner ring and the outer ring of the thrust bearing 104 and also flow back to the oil sump of the gearbox along the oil return line after forming an oil film, but the invention is not limited thereto.
In yet another embodiment, the lubricating oil may flow in parallel between the inner and outer rings of the sliding bearing 101 and the thrust bearing 104 through the pipe group 201, but the invention is not limited thereto.
With continued reference to fig. 1, the pipeline group 201 includes: a first pipeline 2011, an oil inlet of which is connected with the lubrication system 105, and an oil outlet of which penetrates through the inner ring of the sliding bearing 101 and is used for conveying lubricating oil between the inner ring and the outer ring of the sliding bearing 101; a second pipeline 2012, an oil inlet of which is connected to an oil inlet of the first pipeline 2011; and a third pipeline 2013, an oil inlet of which is connected with an oil outlet of the second pipeline 2012, and an oil outlet of which is connected with the oil storage cavity 202, for conveying lubricating oil to the oil storage cavity 202.
It will be appreciated that in some other embodiments, the tubing set 201 further comprises: a fourth conduit 2014 comprising a first port, a second port, and a third port; and a first port of the fourth pipeline 2014 is connected to the first pipeline 2011, a second port is connected to the second pipeline 2012, and a third port is connected to the third pipeline 2013, so as to communicate the first pipeline 2011, the second pipeline 2012 and the third pipeline 2013.
In some embodiments, the tubing set 201 further comprises: the first check valve 2015 is disposed on the first pipeline 2011 and is located between the oil inlet of the first pipeline 2011 and the first port of the fourth pipeline 2014, and is used for controlling on-off of the first pipeline 2011 and flow direction of lubricating oil in the first pipeline 2011; a second check valve 2016, disposed on the third pipe 2013, located between an oil inlet of the third pipe 2013 and a third port of the fourth pipe 2014, and configured to control on-off of the third pipe 2013 and a flow direction of lubricating oil in the third pipe 2013; and a pressure switch 2017, disposed on the fourth pipeline 2014, and located at a junction of the first port and the second port of the fourth pipeline 2014, for controlling on/off of the fourth pipeline 2014.
In some embodiments, the first check valve 2015 flows lubricating oil in a direction from an oil inlet to an oil outlet of the first pipeline 2011; the second check valve 2016 allows the lubricant to flow in the direction from the oil inlet to the oil outlet of the third pipe 2013.
Specifically, in the present embodiment, the first check valve 2015 may enable the lubricant in the first pipeline 2011 to flow unidirectionally, so as to prevent the lubricant in the first pipeline 2011 from flowing back to the lubrication system 105. The second check valve 2016 can make the lubricating oil in the third pipe 2013 flow unidirectionally, so as to prevent the lubricating oil in the third pipe 2013 from flowing back to the lubrication system 105, but the invention is not limited thereto.
Specifically, in this embodiment, the pressure switch 2017 is disposed at the junction of the first port and the second port of the fourth pipeline 2014, and no matter the pressure switch 2017 is closed or opened, the second port of the fourth pipeline 2014 is not communicated with the first port and the third port, that is, the pressure switch 2017 is used for blocking the second port of the fourth pipeline 2014 and controlling the on-off between the first port and the third port of the fourth pipeline 2014. More specifically, when the pressure switch 2017 is closed (as shown in fig. 1), the first pipe 2011 and the third pipe 2013 cannot communicate through the fourth pipe 2014 if the first port and the third port of the fourth pipe 2014 are blocked, that is, the fourth pipe 2014 is blocked; when the pressure switch 2017 is turned off (as shown in fig. 5), the first port and the third port of the fourth pipeline 2014 are communicated, i.e. the fourth pipeline 2014 is turned on, and at this time, the first pipeline 2011 and the third pipeline 2013 may be communicated through the fourth pipeline 2014, but the invention is not limited thereto.
Referring to fig. 2-4, the opening pressure of the first check valve 2015 is greater than the opening pressure of the second check valve 2016; the opening pressure of the second check valve 2016 is greater than the closing pressure of the pressure switch 2017.
Specifically, in this embodiment, when the lubrication system 105 is operating normally (electrified), the lubricating oil in the lubrication system 105 may enter the pipe group 201 under the action of external power, and a corresponding oil pressure may be generated in the pipe group 201. Since the opening pressure (e.g., 0.2 MPa) of the first check valve 2015 is maximum, the opening pressure (e.g., 0.1 MPa) of the second check valve 2016 is minimum, and the closing pressure (e.g., 0.05 MPa) of the pressure switch 2017 is minimum, the oil pressure between the oil inlet of the second pipe 2012 and the pressure switch 2017 is first higher than the closing pressure of the pressure switch 2017, so that the pressure switch 2017 is closed under the oil pressure (as shown in fig. 2), thereby blocking the fourth pipe 2014 and preventing the first pipe 2011, the second pipe 2012 and the third pipe 2013 from communicating.
Subsequently, the lubricating oil in the lubrication system 105 continues to enter the pipe group 201, since the oil inlet of the second pipe 2012 and the pressure switch 2017 are filled with lubricating oil and the fourth pipe 2014 is blocked, the lubricating oil that continues to enter the pipe group 201 flows into the first pipe 2011 and the third pipe 2013, respectively, and the oil pressure between the oil inlet of the third pipe 2013 and the second check valve 2016 is higher than the opening pressure of the second check valve 2016, so that the second check valve 2016 is opened under the oil pressure (as shown in fig. 3), thereby making the third pipe 2013 conductive and making the lubricating oil flow into the oil storage chamber 202 along the direction from the oil inlet to the oil outlet of the third pipe 2013.
After the oil storage cavity 202 is filled with the lubricating oil, the lubricating oil in the lubricating system 105 still continues to enter the pipeline group 201, at this time, the lubricating oil which continues to enter the pipeline group 201 flows into the first pipeline 2011, and the oil pressure between the oil inlet of the first pipeline 2011 and the first one-way valve 2015 is higher than the opening pressure of the first one-way valve 2015, so that the first one-way valve 2015 is opened under the action of the oil pressure (as shown in fig. 4), and the first pipeline 2011 is conducted, so that the lubricating oil can flow between the inner ring and the outer ring of the sliding bearing 101 along the direction from the oil inlet to the oil outlet of the first pipeline 2011 to form an oil film, so that the conventional lubricating function is realized, but the invention is not limited thereto.
Referring to fig. 1, 3 and 5, the accumulator 203 includes: the piston 2031 is positioned in the oil storage cavity 202 and is in sliding connection with the inner side wall of the oil storage cavity 202; a telescopic member 2032 having a first end fixedly connected to an end of the piston 2031 remote from the third pipe 2013 and a second end fixedly connected to an end of the oil storage chamber 202 remote from the third pipe 2013, for storing energy by compression when the lubrication system 105 is normal and releasing energy by extension when the lubrication system 105 is abnormal; and the first end and the second end of the telescoping member 2032 are disposed opposite; the expansion and contraction member 2032 releases energy to cause the piston 2031 to transfer the lubricant oil in the oil storage chamber 202 between the inner ring and the outer ring of the sliding bearing 101 via the third pipe 2013, the fourth pipe 2014, and the first pipe 2011.
Specifically, in this embodiment, when the lubrication system 105 is operating normally (is electrified), the lubricant flowing into the oil storage chamber 202 may apply pressure to the telescopic member 2032 through the piston 2031, so that the piston 2031 and the telescopic member 2032 move to a first preset position, i.e., compress to a first limit position, in a direction away from the third pipeline 2013 (as shown in fig. 3), so as to provide a storage space for the lubricant and store energy for the telescopic member 2032 itself. Preferably, the telescopic member 2032 is a spring; the first preset position may be an end of the oil storage chamber 202 away from the third pipeline 2013, and the oil storage chamber 202 may be completely filled with lubricating oil when the telescopic member 2032 is compressed to the first preset position, but the invention is not limited thereto.
Specifically, in this embodiment, when the lubrication system 105 is abnormal (power failure), the external power for conveying the lubricating oil in the lubrication system 105 is lost, the lubricating oil in the lubrication system 105 cannot flow into the pipeline group 201, so that the oil pressure in the pipeline group 201 is lost, and the telescopic component 2032 is not stressed and compressed any more; at this time, the expansion member 2032 and the piston 2031 may be moved to a second predetermined position, i.e., extended to a second limit position, in a direction approaching the third pipe 2013. Since the oil storage chamber 202 is filled with the lubricating oil, the expansion member 2032 can apply pressure to the lubricating oil in the oil storage chamber 202 through the piston 2031 during expansion to push the lubricating oil in the oil storage chamber 202 into the third pipe 2013. More specifically, since the second check valve 2016 on the third pipe 2013 may prevent the flow of lubrication oil to the lubrication system 105, the lubrication oil in the third pipe 2013 may flow entirely into the fourth pipe 2014; with the extension of the extension member 2031, the lubricant in the oil storage chamber 202 continuously flows into the fourth pipeline 2014 through the third pipeline 2013, and the lubricant in the second pipeline 2012 flows back to the lubrication system 105, so that the oil pressure between the oil inlet of the second pipeline 2012 and the pressure switch 2017 is smaller than the closing pressure of the pressure switch 2017, so that the pressure switch 2017 is opened (as shown in fig. 5), and the third port and the first port of the fourth pipeline 2014 are communicated, and the lubricant can flow into the first pipeline 2011 along the direction from the third port to the first port of the fourth pipeline 2014; since the first check valve 2015 on the first pipe 2011 can also prevent the lubricant from flowing to the lubrication system 105, the lubricant in the first pipe 2011 can flow between the inner ring and the outer ring of the sliding bearing 101, so that the sliding bearing 101 can still be lubricated in a state of power failure (power failure of the power grid) and the like, and further the reliability of the sliding bearing 101 is improved. Preferably, the second preset position may be an end of the oil storage chamber 202 near the third pipeline 2013, and when the telescopic member 2032 is extended to the second preset position, no lubricating oil exists in the oil storage chamber 202, that is, the lubricating oil is completely transferred between the inner ring and the outer ring of the sliding bearing 101, but the invention is not limited thereto.
On the other hand, the embodiment also provides a use method of the oil circuit device, which comprises the following steps: step S1, the lubrication system 105 of the gear box is caused to feed the lubrication oil to the pipe group 201; step S2, enabling the pipeline group 201 to deliver the lubricating oil to the oil storage cavity 202 so as to store the lubricating oil and enable the accumulator 203 to store energy; and step S3, enabling the pipeline group 201 to convey lubricating oil between the inner ring and the outer ring of the sliding bearing 101 so as to form an oil film.
It will be appreciated that in some other embodiments, the usage method of the oil circuit device further includes: step S4, enabling the accumulator 203 to release energy when the lubrication system 105 is abnormal, so as to convey the lubricating oil in the oil storage chamber 202 between the inner ring and the outer ring of the sliding bearing 101 through the pipe group 201.
Specifically, in the embodiment, before executing the step S3, the oil storage chamber 202 is filled with lubricating oil, but the invention is not limited thereto.
Specifically, in this embodiment, the step S2 includes: the oil pressure between the oil inlet of the first pipeline 2011 and the first check valve 2015 is smaller than the opening pressure of the first check valve 2015, the oil pressure between the oil inlet of the third pipeline 2013 and the second check valve 2016 is smaller than the opening pressure of the second check valve 2016, and the oil pressure between the oil inlet of the second pipeline 2012 and the pressure switch 2017 is larger than the closing pressure of the pressure switch 2017 so as to close the pressure switch 2017 and block the fourth pipeline 2014; the oil pressure between the oil inlet of the first pipeline 2011 and the first check valve 2015 is smaller than the opening pressure of the first check valve 2015, and the oil pressure between the oil inlet of the third pipeline 2013 and the second check valve 2016 is larger than the opening pressure of the second check valve 2016, so as to open the second check valve 2016, conduct the third pipeline 2013 and enable lubricating oil to flow into the oil storage cavity 202 along the direction from the oil inlet to the oil outlet of the third pipeline 2013; and causing the lubricating oil flowing into the oil reservoir chamber 202 to compress the expansion and contraction member 2031 to a first preset position through the piston 2031 to store energy.
The step S3 includes: the oil pressure between the oil inlet of the first pipeline 2011 and the first check valve 2015 is greater than the opening pressure of the first check valve 2015, so as to open the first check valve 2015, conduct the first pipeline 2011 and enable lubricating oil to flow between the inner ring and the outer ring of the sliding bearing 101 along the direction from the oil inlet to the oil outlet of the first pipeline 2011.
The step S4 includes: causing the expansion and contraction member 2032 to apply pressure to the lubricant in the oil storage chamber 202 through the piston 2031 to expand to a second preset position, and causing the lubricant in the oil storage chamber 202 to flow into the third port of the fourth pipe 2014 through the third pipe 2013; the oil pressure between the oil inlet of the second pipeline 2012 and the pressure switch 2017 is smaller than the closing pressure of the pressure switch 2017, so as to open the pressure switch 2017, conduct the fourth pipeline 2014 and enable lubricating oil to flow into the first pipeline 2011 along the direction from the third port to the first port of the fourth pipeline 2014; and lubricating oil flows between the inner ring and the outer ring of the sliding bearing 101 through the oil outlet of the first pipeline 2011.
In summary, according to the oil path device and the use method provided by the embodiment, when the lubrication system of the gearbox is in normal operation, the lubrication oil can be conveyed to the oil storage cavity through the pipeline group to store the lubrication oil and the energy storage device can store the energy, and after the oil storage cavity is filled with the lubrication oil, the lubrication oil can be conveyed between the inner ring and the outer ring of the sliding bearing through the pipeline group to form an oil film, so that a conventional lubrication function is realized. When the lubricating system is abnormal, the energy accumulator is enabled to release energy, and lubricating oil in the oil storage cavity can be conveyed between the inner ring and the outer ring of the sliding bearing through the pipeline group, so that the sliding bearing can be lubricated when the lubricating system is abnormal, and the reliability of the sliding bearing is improved.
While the present invention has been described in detail through the foregoing description of the preferred embodiment, it should be understood that the foregoing description is not to be considered as limiting the invention. Many modifications and substitutions of the present invention will become apparent to those of ordinary skill in the art upon reading the foregoing. Accordingly, the scope of the invention should be limited only by the attached claims.
Claims (10)
1. An oil circuit device is positioned in a planet wheel pin shaft (100) of a gear box; the planetary gear pin shaft (100) is rotationally connected with the planetary gear (102) through a sliding bearing (101), an inner ring of the sliding bearing (101) is fixedly connected with the planetary gear pin shaft (100), and an outer ring of the sliding bearing is fixedly connected with the planetary gear (102); the oil circuit device is characterized by comprising:
a pipe group (201) connected with a lubrication system (105) of the gear box and the sliding bearing (101) respectively, and used for conveying lubricating oil in the lubrication system (105) between an inner ring and an outer ring of the sliding bearing (101) so as to form an oil film;
a storage cavity (202) connected with the pipeline group (201) and used for storing lubricating oil;
an accumulator (203) provided in the oil storage chamber (202) for storing and releasing energy to deliver the lubricating oil in the oil storage chamber (202) between the inner ring and the outer ring of the sliding bearing (101) when the lubrication system (105) is abnormal;
the pipe group (201) includes:
the oil inlet of the first pipeline (2011) is connected with the lubricating system (105), and the oil outlet of the first pipeline penetrates through the inner ring of the sliding bearing (101) and is used for conveying lubricating oil between the inner ring and the outer ring of the sliding bearing (101);
a second pipeline (2012) with an oil inlet connected to the oil inlet of the first pipeline (2011);
a third pipeline (2013) with an oil inlet connected with an oil outlet of the second pipeline (2012), and an oil outlet connected with the oil storage cavity (202) for conveying lubricating oil to the oil storage cavity (202);
the tubing set (201) further comprises: a fourth conduit (2014) comprising a first port, a second port, and a third port; and a first port of the fourth pipeline (2014) is connected with the first pipeline (2011), a second port is connected with the second pipeline (2012), and a third port is connected with the third pipeline (2013) for communicating the first pipeline (2011), the second pipeline (2012) and the third pipeline (2013).
2. The oil passage apparatus according to claim 1, wherein said pipe group (201) further includes:
the first check valve (2015) is arranged on the first pipeline (2011) and is positioned between an oil inlet of the first pipeline (2011) and a first port of the fourth pipeline (2014) and used for controlling on-off of the first pipeline (2011) and the flow direction of lubricating oil in the first pipeline (2011);
the second one-way valve (2016) is arranged on the third pipeline (2013) and is positioned between an oil inlet of the third pipeline (2013) and a third port of the fourth pipeline (2014) and used for controlling the on-off of the third pipeline (2013) and the flow direction of lubricating oil in the third pipeline (2013); and
the pressure switch (2017) is arranged on the fourth pipeline (2014) and is positioned at the junction of the first port and the second port of the fourth pipeline (2014) and used for controlling the on-off of the fourth pipeline (2014).
3. The oil passage device according to claim 2, wherein,
the first one-way valve (2015) enables lubricating oil to flow along the direction from an oil inlet to an oil outlet of the first pipeline (2011);
the second one-way valve (2016) enables lubricating oil to flow in the direction from an oil inlet to an oil outlet of the third pipeline (2013).
4. The oil passage device according to claim 2, wherein,
-the opening pressure of the first one-way valve (2015) is greater than the opening pressure of the second one-way valve (2016);
the opening pressure of the second one-way valve (2016) is greater than the closing pressure of the pressure switch (2017).
5. The oil passage device according to claim 1, characterized in that the accumulator (203) includes:
the piston (2031) is positioned in the oil storage cavity (202) and is in sliding connection with the inner side wall of the oil storage cavity (202);
a telescopic member (2032) having a first end fixedly connected to an end of the piston (2031) remote from the third pipe (2013), and a second end fixedly connected to an end of the oil storage chamber (202) remote from the third pipe (2013), for storing energy by compression when the lubrication system (105) is normal and releasing energy by extension when the lubrication system (105) is abnormal; and the first end and the second end of the telescopic part (2032) are oppositely arranged;
the telescopic component (2032) releases energy to enable the piston (2031) to convey lubricating oil in the oil storage cavity (202) to a position between an inner ring and an outer ring of the sliding bearing (101) through the third pipeline (2013), the fourth pipeline (2014) and the first pipeline (2011).
6. The method for using the oil passage device according to any one of claims 1 to 5, characterized by comprising:
enabling a lubrication system of the gear box to convey lubricating oil to the pipeline group;
causing the tube set to deliver lubricant to the reservoir to store lubricant and cause the accumulator to store energy; and
the pipe group is made to convey lubricating oil between the inner ring and the outer ring of the sliding bearing to form an oil film.
7. The method of using an oil passage device according to claim 6, characterized by further comprising:
and enabling the energy accumulator to release energy when the lubricating system is abnormal so as to convey the lubricating oil in the oil storage cavity to a position between the inner ring and the outer ring of the sliding bearing through the pipeline group.
8. The method of using an oil passage apparatus according to claim 6, wherein the step of causing the pipe group to convey the lubricating oil to the oil reservoir includes:
the oil pressure between the oil inlet of the first pipeline and the first one-way valve is smaller than the opening pressure of the first one-way valve, the oil pressure between the oil inlet of the third pipeline and the second one-way valve is smaller than the opening pressure of the second one-way valve, and the oil pressure between the oil inlet of the second pipeline and the pressure switch is larger than the closing pressure of the pressure switch so as to close the pressure switch and block the fourth pipeline;
the oil pressure between the first pipeline oil inlet and the first one-way valve is smaller than the opening pressure of the first one-way valve, and the oil pressure between the third pipeline oil inlet and the second one-way valve is larger than the opening pressure of the second one-way valve, so that the second one-way valve is opened, the third pipeline is conducted, and lubricating oil flows into the oil storage cavity along the direction from the third pipeline oil inlet to the oil outlet; and
and enabling the lubricating oil flowing into the oil storage cavity to compress the telescopic part to a first preset position through the piston so as to store energy.
9. The method of using the oil passage device according to claim 8, wherein the step of causing the pipe group to convey the lubricating oil between the inner ring and the outer ring of the sliding bearing includes:
the oil pressure between the oil inlet of the first pipeline and the first one-way valve is larger than the opening pressure of the first one-way valve, so that the first one-way valve is opened, the first pipeline is conducted, and lubricating oil flows into the space between the inner ring and the outer ring of the sliding bearing along the direction from the oil inlet to the oil outlet of the first pipeline.
10. The method of using an oil passage device according to claim 8, characterized in that the step of causing the accumulator to release energy when the lubrication system is abnormal includes:
the telescopic part applies pressure to the lubricating oil in the oil storage cavity through the piston so as to stretch to a second preset position, and the lubricating oil in the oil storage cavity flows into a third port of the fourth pipeline through the third pipeline;
the oil pressure between the oil inlet of the second pipeline and the pressure switch is smaller than the closing pressure of the pressure switch so as to open the pressure switch, the fourth pipeline is conducted, and lubricating oil flows into the first pipeline along the direction from the third port to the first port of the fourth pipeline; and
and enabling lubricating oil to flow into the space between the inner ring and the outer ring of the sliding bearing through the oil outlet of the first pipeline.
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| CN202210179108.6A CN114483931B (en) | 2022-02-25 | 2022-02-25 | Oil way device and use method |
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| CN202210179108.6A CN114483931B (en) | 2022-02-25 | 2022-02-25 | Oil way device and use method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156646A (en) * | 2015-08-14 | 2015-12-16 | 青岛大学 | Lubricating system of wind power gear box |
| CN107420531A (en) * | 2017-05-27 | 2017-12-01 | 维翰（大连）工业设备有限公司 | Wind turbine gearbox lubricating system and wind power plant |
| CN110360438A (en) * | 2018-04-11 | 2019-10-22 | 南京恒昌包装机械有限公司 | A kind of full-automatic oil lubricating system |
| CN110397726A (en) * | 2019-07-29 | 2019-11-01 | 南京高速齿轮制造有限公司 | A kind of gear-box and wind power generation plant |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110168494A1 (en) * | 2010-01-11 | 2011-07-14 | General Electric Company | Lubrication of wind turbine gearbox during idling or loss of electric grid |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156646A (en) * | 2015-08-14 | 2015-12-16 | 青岛大学 | Lubricating system of wind power gear box |
| CN107420531A (en) * | 2017-05-27 | 2017-12-01 | 维翰（大连）工业设备有限公司 | Wind turbine gearbox lubricating system and wind power plant |
| CN110360438A (en) * | 2018-04-11 | 2019-10-22 | 南京恒昌包装机械有限公司 | A kind of full-automatic oil lubricating system |
| CN110397726A (en) * | 2019-07-29 | 2019-11-01 | 南京高速齿轮制造有限公司 | A kind of gear-box and wind power generation plant |
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