CN115875585B

CN115875585B - Lubrication system and rotary device

Info

Publication number: CN115875585B
Application number: CN202310004405.1A
Authority: CN
Inventors: 蒋牧龙; 杨仕福; 徐建伟; 周光厚; 欧阳宁东; 解朝军
Original assignee: Dongfang Electric Machinery Co Ltd DEC
Current assignee: Dongfang Electric Machinery Co Ltd DEC
Priority date: 2023-01-03
Filing date: 2023-01-03
Publication date: 2024-06-14
Anticipated expiration: 2043-01-03
Also published as: WO2024146313A1; CN115875585A

Abstract

The present application provides a lubrication system and a rotating apparatus, the lubrication system including: fixing an oil tank; the main shaft is annularly provided with a sliding rotor which extends into the fixed oil tank; a plurality of guide bearing shoes, wherein the guide bearing shoes are contacted with the peripheral surface of the sliding rotor; the self-pump assembly is arranged in the fixed oil tank, and the self-pump assembly and the sliding rotor are enclosed to define a self-pump chamber; the circulating oil tank is communicated with the self-pumping chamber; one end of the oil injection pipe is communicated with the circulating oil tank, and the other end of the oil injection pipe is positioned at the guide bearing bush; the self-pumping assembly comprises a self-pumping plate, the self-pumping plate extends to the lower end of the sliding rotor partially and is arranged at intervals with the sliding rotor, a self-pumping port is defined between the self-pumping plate and the lower end of the sliding rotor, and the self-pumping port is communicated with the self-pumping cavity. According to the application, the lubricating medium in the fixed oil tank is sucked from the pump assembly, so that the liquid level of the lubricating medium in the fixed oil tank is reduced, and the phenomenon of foam and oil mist generated by stirring the lubricating medium in the fixed oil tank by the lubricating rotor is reduced.

Description

Lubrication system and rotary device

Technical Field

The application relates to the technical field of lubrication, in particular to a lubrication system and rotating equipment.

Background

Currently, for large rotating equipment, it is necessary to immerse the bearings in the oil tank to reduce the temperature of the bearings because a large amount of heat is generated during the rotation process. Taking a pumped storage large-scale rotating equipment generator motor as an example, the generator motor is provided with a shaft, a sliding rotor is annularly arranged on the surface of the shaft, a guide bearing and a thrust bearing are contacted with the sliding rotor, wherein the guide bearing is contacted with the side surface of the sliding rotor to limit the radial movement of the shaft, the thrust bearing is contacted with the bottom surface of the sliding rotor to limit the axial movement of the sliding rotor, and the guide bearing, the sliding rotor and the thrust bearing are all soaked in an oil tank to reduce the temperature of the guide bearing, the sliding rotor and the thrust bearing.

However, as the bearing is soaked in the oil tank, the sliding rotor rotates relative to the bearing and simultaneously produces stirring action on the lubricating medium in the oil tank, so that foam and oil mist phenomena are generated in the oil tank, and the phenomenon of short circuit can be caused when the oil mist overflows the oil tank and is attached to the generator, and the safe and stable operation of the generator motor is affected.

Chinese patent (publication No. CN 204239129U) discloses a guide bearing bush oil supply device with a high-level oil tank, which comprises a high-level oil tank, an oil supply pump, an oil return pipe, an oil discharge pipe, an oil supply loop pipe and an oil groove, wherein lubricating oil in the oil groove sequentially passes through the oil supply pump, the high-level oil tank, the oil supply loop pipe and an oil injection branch pipe to form a circulating oil supply loop. Although the mode that this patent utilized high-order oil tank spray bearing has reduced the liquid level of the interior lubricating oil of oil groove to a certain extent, is favorable to alleviating foam and oil mist phenomenon in the oil groove promptly, but the additional feed pump flow is fixed, and when main shaft rotational speed was accelerated and is led to required lubricating oil spray volume to increase to some extent, the feed pump is difficult to follow the rotational speed of main shaft and improves lubricating oil conveying volume, and this very easily leads to lubricating medium volume shortage to cause the burn tile problem.

Disclosure of Invention

The application provides a lubrication system and rotating equipment, and aims to solve the technical problem that the existing oil supply pump is poor in flow fixing and main shaft rotating speed following performance and is easy to cause tile burning.

In a first aspect, the present application provides a lubrication system comprising:

fixing an oil tank;

The main shaft is annularly provided with a sliding rotor which extends into the fixed oil tank;

a plurality of guide bearing shoes, wherein the guide bearing shoes are contacted with the peripheral surface of the sliding rotor;

the self-pump assembly is arranged in the fixed oil tank, and the self-pump assembly and the sliding rotor are enclosed to define a self-pump chamber;

the circulating oil tank is communicated with the self-pumping chamber;

One end of the oil injection pipe is communicated with the circulating oil tank, and the other end of the oil injection pipe is positioned at the guide bearing bush;

The self-pumping assembly comprises a self-pumping plate, the self-pumping plate extends to the lower end of the sliding rotor partially and is arranged at intervals with the sliding rotor, a self-pumping port is defined between the self-pumping plate and the lower end of the sliding rotor, and the self-pumping port is communicated with the self-pumping cavity.

In some embodiments, during lubrication of the lubrication system, the level of the circulation tank is higher than the level of the guide bearing shoes, and the level of the lubrication medium in the fixed tank is lower than the guide bearing shoes and higher than the self-pumping plate;

After the lubrication system stops lubricating, the liquid level of the lubricating medium in the fixed oil tank floods the guide bearing bush.

In some embodiments, the self-pump assembly further comprises a circumferential ring plate and a sealing plate;

The peripheral annular plate is fixed on the periphery of the sliding rotor, the sealing plate is fixed at the upper end of the peripheral annular plate and is in contact with the sliding rotor, and the self-pumping plate is fixed at the lower end of the peripheral annular plate and extends to the lower end of the sliding rotor;

the circumferential ring plate, the seal plate, the self-pumping plate, and the slip rotor collectively define a self-pumping chamber.

In some embodiments, the level of the lubricating medium in the fixed reservoir is located between the seal plate and the self-pumping plate during lubrication of the lubrication system.

In some embodiments, the injection tube comprises an injection tube between adjacent guide bearing shoes, the injection tube being provided with an injection port facing the slide rotor.

In some embodiments, there is a first jet pipe and a second jet pipe between any adjacent guide bearing shoes;

The first jet pipe is disposed adjacent one side of one guide bearing shoe and the second jet pipe is disposed adjacent one side of the other guide bearing shoe.

In some embodiments, the jet pipe is arranged along an axial direction of the main shaft, and a flow direction of the lubrication medium in the jet pipe is directed from the pump chamber.

In some embodiments, a heat exchanger is disposed within the fixed tank; and/or

A heat exchanger is arranged in the circulating oil tank.

In some embodiments, the self-pumping assembly further comprises a bearing support on which the guide bearing shoe and the self-pumping assembly are secured.

In a second aspect, the present application provides a rotary apparatus comprising a lubrication system as described in the first aspect.

According to the application, the self-pumping assembly is arranged in the fixed oil tank, the self-pumping assembly and the sliding rotor are used for enclosing to define the self-pumping chamber, the self-pumping opening is defined between the self-pumping plate and the lower end of the sliding rotor, when the main shaft rotates, the sliding rotor rotates relative to the self-pumping plate to enable negative pressure to be generated at the self-pumping opening, the self-pumping chamber forms a centrifugal chamber, and lubricating medium in the fixed oil tank is sucked through the self-pumping opening, so that the lubricating medium flows into the circulating oil tank and finally is sprayed to the guide bearing bush through the oil spraying pipe for spraying lubrication. In the first aspect, the lubricating medium in the fixed oil tank is sucked from the pump assembly, so that the liquid level of the lubricating medium in the fixed oil tank is reduced, and the phenomenon of foam and oil mist generated by stirring the lubricating medium in the fixed oil tank by the lubricating rotor is reduced; in the second aspect, the flow of the circulating lubricating medium of the self-pumping assembly is changed along with the change of the rotating speed of the main shaft, so that the follow-up performance between the flow of the lubricating medium and the rotating speed of the main shaft is better, the quality of the lubricating medium pumped by the self-pumping assembly is ensured to be matched with the rotating speed of the main shaft, and the phenomenon of tile burning caused by insufficient flow of the lubricating medium is avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic illustration of a lubrication system provided in an embodiment of the present application;

FIG. 2 is a schematic illustration of a configuration of an oil spray bar arrangement provided in an embodiment of the present application;

fig. 3 is another schematic structural view of a lubrication system provided in an embodiment of the present application.

The device comprises a10 fixed oil tank, a 20 main shaft, a 21 sliding rotor, a 30 guide bearing bush, a 40 pump assembly, a 41 pump plate, a 42 circumferential ring plate, a 43 sealing plate, a 401 pump chamber, a 402 pump port, a 50 circulating oil tank, a 60 oil injection pipe, a 61 injection pipe, a 601 first injection pipe, a 602 second injection pipe, a 70 heat exchanger and an 80 bearing support seat.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus 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" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present application, the term "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described as "exemplary" in this disclosure is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the application. In the following description, details are set forth for purposes of explanation. It will be apparent to one of ordinary skill in the art that the present application may be practiced without these specific details. In other instances, well-known structures and processes have not been described in detail so as not to obscure the description of the application with unnecessary detail. Thus, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

The embodiment of the application provides a lubrication system and a rotating device, and the lubrication system and the rotating device are respectively described in detail below.

Referring first to fig. 1, fig. 1 shows a schematic structural diagram of a lubrication system according to an embodiment of the present application, where the lubrication system includes:

A fixed oil tank 10;

The main shaft 20 is provided with a sliding rotor 21 in a ring shape, and the sliding rotor 21 stretches into the fixed oil tank 10;

a plurality of guide bearing shoes 30, the guide bearing shoes 30 being in contact with the outer peripheral surface of the sliding rotor 21;

The self-pump assembly 40, the self-pump assembly 40 being disposed within the stationary tank 10, the self-pump assembly 40 defining a self-pump chamber 401 in combination with the slip rotor 21;

A circulation tank 50, the circulation tank 50 being in communication with the self-pumping chamber 401;

the oil injection pipe 60, one end of the oil injection pipe 60 is communicated with the circulating oil tank 50, and the other end of the oil injection pipe 60 is positioned at the guide bearing bush 30;

Wherein, from pump assembly 40 includes from pump plate 41, from pump plate 41 part extends to the slip rotor 21 lower extreme and with slip rotor 21 interval setting, from pump plate 41 and slip rotor 21 lower extreme between prescribe a limit to from pump mouth 402, from pump mouth 402 and from pump cavity 401 intercommunication.

Specifically, the main shaft 20 refers to a rotation shaft of any large-sized rotating equipment, such as a rotation shaft of a generator motor, a water pump turbine, a wind turbine, or the like. Typically, the spindle 20 is annularly arranged with a sliding rotor 21, and the sliding rotor 21 may be in contact with a bearing (e.g., a thrust bearing or a guide bearing) to achieve restriction of radial movement and axial movement of the spindle 20. The main shaft 20 carries a part of rotating members, for example, a generator motor is taken as an example, a rotor is mounted on the main shaft 20, a stator is arranged around the rotor, and the rotor cuts magnetic field lines of the stator to generate electricity; for another example, a water pump turbine is used as an example, and a rotating wheel is mounted on the main shaft 20 so as to convert kinetic energy of water into mechanical energy. In some embodiments of the application, the main shaft 20 may be arranged vertically or horizontally, such as the rotating shaft of a horizontal generator or a vertical generator. It will be appreciated that the spindle 20 may also be arranged obliquely.

The guide bearing shoes 30 contact the outer circumferential surface of the sliding rotor 21, thereby restricting radial movement of the main shaft 20. In some embodiments of the application, a plurality of guide bearing shoes 30 are arranged in an annular array in spaced apart contact with the surface of the slide rotor 21. In some embodiments of the present application, the slide rotor 21 of the spindle 20 may also be in contact with thrust bearing shoes to limit axial movement of the spindle 20. It will be appreciated that the guide bearing shoe 30 may also include other structures, such as bearing blocks, insulating plates, etc.

The fixed tank 10 is used to enclose the slide rotor 21 and to encase the lubrication shoes 30 with the slide rotor 21 so that the lubrication medium of the lubrication shoes 30 can be collected by the fixed tank 10 and fed into the self-pump assembly 40 for circulation. In some embodiments of the application, the fixed tank 10 is annular and has an annular chamber, the spindle 20 may pass through the middle of the annular fixed tank 10, and the sliding rotor 21 and the guide bearing shoes 30 may be wrapped in the annular chamber.

The self-pumping unit 40 is used for pumping the lubricating medium in the fixed oil tank 10 to the circulating oil tank 50, so that on one hand, the circulating oil tank 50 can be used for spraying lubrication to improve the lubrication effect of the guide bearing bush 30, and on the other hand, part of the lubricating medium in the fixed oil tank 10 can be stored in the lubricating oil tank, so that the liquid level of the lubricating medium in the fixed oil tank 10 can be reduced, and the phenomenon that the lubricating medium in the fixed oil tank 10 is stirred along with the rotation of the sliding rotor 21 to generate oil mist and foam can be reduced. Specifically, the self-pump assembly 40 includes a self-pump plate 41 extending from a portion of the pump plate 41 to the lower end of the slide rotor 21 and spaced apart from the slide rotor 21, a self-pump port 402 being defined between the self-pump plate 41 and the lower end of the slide rotor 21, the self-pump port 402 communicating with the self-pump chamber 401. When the slide rotor 21 rotates with the main shaft 20, the rotation of the slide rotor 21 relative to the self-pumping plate 41 causes negative pressure to be generated at the self-pumping port 402, a centrifugal chamber is formed from the pump chamber 401 and the lubricating medium in the fixed oil tank 10 is sucked through the self-pumping port 402, so that the lubricating medium flows into the circulation oil tank 50 and is finally sprayed to the guide bearing bush 30 through the oil spray pipe 60 for spray lubrication.

The circulation tank 50 is used to store the lubrication medium pumped from the pump assembly 40 to facilitate spray lubrication of the guide bearing shoes 30 via the oil spray line 60. In some embodiments of the present application, the vertical height of the circulation tank 50 is higher than the vertical height of the guide bearing shoes 30, and when the rotating equipment (such as a generator motor or a water pump turbine) abnormally stops rotating, the lubrication medium in the circulation tank 50 can flow to the guide bearing shoes 30 under the action of gravity so as to ensure that the guide bearing shoes 30 are continuously lubricated when the rotating equipment abnormally stops.

The oil spray pipe 60 is used to spray the lubrication medium supplied from the circulation tank 50 to the guide bearing bush 30 to achieve spray lubrication of the guide bearing bush 30. In some embodiments of the present application, the oil spray bar 60 is disposed proximate to the contact gap of the guide bearing bush 30 and the sliding rotor 21 so that the oil spray bar 60 sprays lubrication medium between the guide bearing bush 30 and the sliding rotor 21 and enhances the lubrication effect. In some embodiments of the present application, a plurality of outlets are provided on the shaft of the spray bar 60 to facilitate uniform lubrication of the guide bearing shoes 30. It will be appreciated that one end of the spray bar 60 may also be provided as an outlet to spray lubricate the guide bearing shoes 30.

In the embodiment of the application, by arranging the self-pumping assembly 40 in the fixed oil tank 10, the self-pumping assembly 40 and the sliding rotor 21 are used for enclosing to define a self-pumping chamber 401, a self-pumping opening 402 is defined between the self-pumping plate 41 and the lower end of the sliding rotor 21, when the main shaft 20 rotates, the sliding rotor 21 rotates relative to the self-pumping plate 41 to generate negative pressure at the self-pumping opening 402, the self-pumping chamber 401 forms a centrifugal chamber and sucks lubricating medium in the fixed oil tank 10 through the self-pumping opening 402, so that the lubricating medium flows into the circulating oil tank 50 and finally is sprayed to the bearing bush 30 through the oil spraying pipe 60 for spraying lubrication. In the first aspect, the lubricating medium in the fixed oil tank 10 is sucked from the pump assembly 40, so that the liquid level of the lubricating medium in the fixed oil tank 10 is reduced, and the phenomenon of foam and oil mist generated by stirring the lubricating medium in the fixed oil tank 10 by the sliding rotor 21 is reduced; in the second aspect, the flow rate of the circulating lubrication medium from the pump assembly 40 changes along with the change of the rotation speed of the main shaft 20, so that the following performance between the flow rate of the lubrication medium and the rotation speed of the main shaft 20 is better, the quality of the pumped lubrication medium from the pump assembly 40 is ensured to be matched with the rotation speed of the main shaft 20, and the phenomenon of burning tiles caused by insufficient flow rate of the lubrication medium is avoided.

In some embodiments of the application, referring to fig. 1, the circulation tank 50 is at a level higher than the level of the guide bearing shoes 30, and the level of the lubricating medium in the stationary tank 10 is lower than the guide bearing shoes 30 and higher than the self-pumping plate 41 during lubrication of the lubrication system. At the same time, after the lubrication system stops lubricating, the level of the lubricating medium in the fixed oil tank 10 floods the guide bearing shoes 30. That is, when the lubrication system is operating normally, since the self-pumping unit 40 pumps the lubrication medium in the fixed oil tank 10 into the circulation oil tank 50, the level of the lubrication medium in the fixed oil tank 10 is lower than the guide bearing bush 30 and higher than the self-pumping plate 41, so that the suction of the lubrication medium from the self-pumping unit 40 is not affected, and the level of the lubrication medium in the fixed oil tank 10 can be reduced, thereby reducing the phenomenon of oil mist and foam generated by stirring the lubrication medium in the fixed oil tank 10 along with the rotation of the sliding rotor 21. After the lubrication system stops lubricating, the lubricating medium in the circulating oil tank 50 flows back into the fixed oil tank 10 again, and the liquid level of the lubricating medium in the fixed oil tank 10 floods the guide bearing bush 30, so that the purpose of protecting the guide bearing bush 30 after stopping can be realized, and the phenomenon that the guide bearing bush 30 directly contacts with air after stopping so as to corrode is avoided.

In some embodiments of the present application, with continued reference to FIG. 1, self-pumping assembly 40 further includes a circumferential ring plate 42 and a seal plate 43. The peripheral ring plate 42 is fixed to the outer periphery of the slide rotor 21, the seal plate 43 is fixed to the upper end of the peripheral ring plate 42 and contacts the slide rotor 21, the self-pump plate 41 is fixed to the lower end of the peripheral ring plate 42 and extends to the lower end of the slide rotor 21, and the peripheral ring plate 42, the seal plate 43, the self-pump plate 41 and the slide rotor 21 together define the self-pump chamber 401. Specifically, the seal plate 43 and the self-pump plate 41 may be fixed to the upper and lower ends of the circumferential ring plate 42 by bolts, respectively, whereby the seal plate 43, the self-pump plate 41 and the circumferential ring plate 42 constitute a member having a C-shaped cross section, and since the circumferential ring plate 42 is fixed to the outer circumference of the slide rotor 21, the axial ring plate, the seal plate 43, the self-pump plate 41 and the slide rotor 21 define the self-pump chamber 401 together so as to suck the lubrication medium in the fixed oil tank 10 by the self-pump chamber 401 when the slide rotor 21 rotates.

It will be appreciated that the seal plate 43, self-pumping plate 41 and circumferential ring plate 42 may also be integrally formed, such as by casting.

In some embodiments of the present application, during the lubrication process of the lubrication system, the level of the lubrication medium in the fixed oil tank 10 is located between the sealing plate 43 and the self-pumping plate 41, so that not only can the self-pumping chamber 401 be guaranteed to suck the lubrication medium in the fixed oil tank 10 through the self-pumping port 402, but also the level of the lubrication medium in the fixed oil tank 10 can be further limited, which is beneficial to further reducing the phenomenon that the sliding rotor 21 in the fixed oil tank 10 agitates the lubrication medium to generate foam and oil mist.

In some embodiments of the present application, referring to fig. 2, fig. 2 shows a schematic structural diagram of the arrangement of the oil spray pipe 60 in the embodiment of the present application, where the oil spray pipe 60 includes an oil spray pipe 61 located between adjacent guide bearing shoes 30, and the oil spray pipe 61 is provided with an oil spray port facing the sliding rotor 21. When the lubrication system works, the lubrication medium in the fixed oil tank 10 is pumped into the circulating oil tank 50 from the pump assembly 40, then flows into the injection pipe 61 between the adjacent guide bearing shoes 30, and finally is injected towards the oil injection port of the sliding rotor 21 through the injection pipe 61, so that the purpose of precise oil supply lubrication among the shoes is realized.

Further, in some embodiments of the present application, continuing with FIG. 2, there is a first jet pipe 601 and a second jet pipe 602 between any adjacent guide bearing shoes 30. The first jet pipe 601 is disposed adjacent one side of one guide bearing shoe 30 and the second jet pipe 602 is disposed adjacent one side of the other guide bearing shoe 30. Since the first injection pipe 601 and the second injection pipe 602 are disposed between any two adjacent guide bearing shoes 30, for the same guide bearing shoe 30, the first injection pipe 601 and the second injection pipe 602 are disposed on two sides of the same guide bearing shoe 30, and when spray lubrication is performed, lubrication medium can enter between the guide bearing shoe 30 and the sliding rotor 21 from two sides, which is beneficial to ensuring lubrication effect of the guide bearing shoe 30. Meanwhile, for some devices with forward rotation and reverse rotation functions, for example, for a pumped storage water pump hydroturbine or a generator motor, a first injection pipe 601 and a second injection pipe 602 are arranged on two sides of the same guide bearing bush 30, and the oil injection pipe 60 can provide near-cooled lubricating medium no matter whether the rotating shaft and the sliding rotor 21 rotate forward or reverse, so that the lubricating effect of the guide bearing bush 30 is guaranteed.

In some embodiments of the present application, with continued reference to FIG. 1, the injection tube 61 is disposed along the axial direction of the spindle 20, and the flow direction of the lubrication medium within the injection tube 61 is directed from the pump chamber 401. The lubrication medium in the injection pipe 61 flows from top to bottom, and the direction of the injection pipe 61 spraying the lubrication medium is downward, so that the phenomenon that the lubrication oil overflows due to direct upward spraying of the lubrication medium can be avoided.

In some embodiments of the present application, with continued reference to FIG. 1, a heat exchanger 70 is disposed within the circulation tank 50 to facilitate cooling of the lubrication medium. Illustratively, the heat exchanger 70 may be a tube heat exchanger or a plate heat exchanger or the like.

In some embodiments of the present application, referring to fig. 3, fig. 3 shows another schematic structure of a lubrication system according to an embodiment of the present application, in which a heat exchanger 70 is disposed in a fixed oil tank 10 so as to directly dissipate heat of a lubrication medium in the fixed oil tank 10.

It will be appreciated that the heat exchanger 70 may also be provided in both the lubricant tank and the stationary tank 10 to enhance the cooling effect of the lubricant.

In some embodiments of the present application, with continued reference to fig. 1 or 3, the lubrication system further includes a bearing support 80, and the guide bearing shoe 30 and self-pump assembly 40 are secured to the bearing support 80 to facilitate securing the guide bearing shoe 30 and self-pump assembly 40. It will be appreciated that the self-pump assembly 40 may also be secured to the inner wall surface of the stationary fuel tank 10 by a steel structure or the like.

It is noted that the above description of the lubrication system is intended to clearly illustrate the implementation verification process of the present application, and that the person skilled in the art, under the guidance of the present application, may make equivalent modifications, for example, to arrange the circulation tank 50 inside the fixed tank 10; for another example, a spray header or the like is provided at the end of the spray bar 60 adjacent to the guide bearing bush 30.

Further, in order to better implement the lubrication system according to the embodiment of the present application, the present application further provides a rotating apparatus based on the lubrication system, where the rotating apparatus includes the lubrication system according to any one of the embodiments described above. Since the rotating device in the embodiment of the present application is provided with the lubrication system in the above embodiment, the rotating device has all the beneficial effects of the lubrication system described above, and will not be described herein.

In the foregoing embodiments, the descriptions of the embodiments are focused on, and the portions of one embodiment that are not described in detail in the foregoing embodiments may be referred to in the foregoing detailed description of other embodiments, which are not described herein again.

While the basic concepts have been described above, it will be apparent to those skilled in the art that the foregoing detailed disclosure is by way of example only and is not intended to be limiting. Although not explicitly described herein, various modifications, improvements and adaptations of the application may occur to one skilled in the art. Such modifications, improvements, and modifications are intended to be suggested within the present disclosure, and therefore, such modifications, improvements, and adaptations are intended to be within the spirit and scope of the exemplary embodiments of the present disclosure.

Meanwhile, the present application uses specific words to describe embodiments of the present application. Reference to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic is associated with at least one embodiment of the application. Thus, it should be emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various positions in this specification are not necessarily referring to the same embodiment. Furthermore, certain features, structures, or characteristics of one or more embodiments of the application may be combined as suitable.

Similarly, it should be noted that in order to simplify the description of the present disclosure and thereby aid in understanding one or more inventive embodiments, various features are sometimes grouped together in a single embodiment, figure, or description thereof. This method of disclosure does not imply that the subject application requires more features than are set forth in the claims. Indeed, less than all of the features of a single embodiment disclosed above.

In some embodiments, numbers describing the components, number of attributes are used, it being understood that such numbers being used in the description of embodiments are modified in some examples by the modifier "about," approximately, "or" substantially. Unless otherwise indicated, "about," "approximately," or "substantially" indicate that the number allows for a 20% variation. Accordingly, in some embodiments, numerical parameters set forth in the specification and claims are approximations that may vary depending upon the desired properties sought to be obtained by the individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and employ a method for preserving the general number of digits. Although the numerical ranges and parameters set forth herein are approximations in some embodiments for use in determining the breadth of the range, in particular embodiments, the numerical values set forth herein are as precisely as possible.

Each patent, patent application publication, and other material, such as articles, books, specifications, publications, documents, etc., cited herein is hereby incorporated by reference in its entirety except for any application history file that is inconsistent or otherwise conflict with the present disclosure, which places the broadest scope of the claims in this application (whether presently or after it is attached to this application). It is noted that the description, definition, and/or use of the term in the appended claims controls the description, definition, and/or use of the term in this application if there is a discrepancy or conflict between the description, definition, and/or use of the term in the appended claims.

The foregoing has outlined a lubrication system and a rotating device according to embodiments of the present application, and a specific example has been used herein to illustrate the principles and embodiments of the present application, the above examples being provided only to assist in understanding the method and core idea of the present application; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, the present description should not be construed as limiting the present application.

Claims

1. A lubrication system, comprising:

fixing an oil tank;

a plurality of guide bearing shoes, the guide bearing shoes being in contact with the outer peripheral surface of the slip rotor;

the circulating oil tank is communicated with the self-pumping chamber;

The oil injection pipe is communicated with the circulating oil tank at one end and is positioned at the guide bearing bush at the other end;

Wherein the self-pumping assembly comprises a self-pumping plate which extends to the lower end of the sliding rotor and is arranged at intervals with the sliding rotor, a self-pumping port is defined between the self-pumping plate and the lower end of the sliding rotor, and the self-pumping port is communicated with the self-pumping chamber;

The self-pumping assembly further comprises a circumferential ring plate and a sealing plate, wherein the circumferential ring plate is fixed on the periphery of the sliding rotor, the sealing plate is fixed on the upper end of the circumferential ring plate and is in contact with the sliding rotor, the self-pumping plate is fixed on the lower end of the circumferential ring plate and extends to the lower end of the sliding rotor, and the circumferential ring plate, the sealing plate, the self-pumping plate and the sliding rotor jointly define the self-pumping chamber;

The level of the lubricating medium in the fixed oil tank is lower than the guide bearing bush and higher than the self-pumping plate in the lubricating process of the lubricating system; after the lubrication system stops lubricating, the liquid level of the lubricating medium in the fixed oil tank floods the guide bearing bush.

2. The lubrication system of claim 1, wherein a level of lubrication medium in the stationary oil tank is located between the seal plate and the self-pumping plate during lubrication of the lubrication system.

3. The lubrication system according to claim 1, wherein the oil spray pipe comprises an oil spray pipe located between adjacent guide bearing shoes, the oil spray pipe being provided with an oil spray port facing the sliding rotor.

4. A lubrication system according to claim 3, wherein there is a first jet pipe and a second jet pipe between any adjacent guide bearing shoes;

5. A lubrication system according to claim 3, wherein the injection pipe is arranged in the axial direction of the main shaft, and the flow direction of the lubrication medium in the injection pipe is directed to the self-pumping chamber.

6. The lubrication system of claim 1, wherein a heat exchanger is disposed within the stationary oil tank; and/or

And a heat exchanger is arranged in the circulating oil tank.

7. The lubrication system according to any one of claims 1 to 6, further comprising a bearing support, the guide bearing shoes and the self-pump assembly being secured to the bearing support.

8. A rotary apparatus comprising a lubrication system as claimed in any one of claims 1 to 7.