Lubricating system, transmission system and wind generating set

Abstract

The utility model relates to a lubrication system, transmission system and wind generating set, the lubrication system is used in the transmission assembly, the transmission assembly comprises a main shaft, a bearing seat and a bearing connected between the main shaft and the bearing seat, the lubrication system comprises a storage box, a delivery pipe and a connecting pipeline, and the storage box is configured to store a lubrication medium; the conveying pipe is provided with an inlet and an outlet which are communicated, and the conveying pipe is used for penetrating through the bearing seat to enable the outlet to face the bearing; the connecting pipeline is connected between the storage box and the conveying pipe and comprises a first branch and a second branch, and the storage box is connected with the inlet through the first branch and the second branch; wherein the first branch is provided with a first driving part, the second branch is provided with a second driving part, and the driving pressure of the first driving part is larger than that of the second driving part. According to the scheme, the problem that the liquid supply resistance is large when the bearing is lubricated can be solved, the bearing is suitable for various application environments, and the operation stability of the bearing is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to wind power generation technical field especially is related to a lubricating system, transmission system and wind generating set. BACKGROUND

[0002] In the wind generating set, the lubrication of main shaft bearing and the lubricating system of gear box can be shared, and the main shaft bearing is mainly lubricated by the lubricating oil of the gear box.

[0003] But the bearing lubrication of the main shaft is insufficient in certain conditions, which leads to bearing wear. For example, in a low temperature environment, the motor pump and the mechanical pump are difficult to pass through the liquid supply pipeline due to the too large viscosity of the oil, which in turn causes insufficient lubrication of the main shaft and causes wear, high temperature and other adverse conditions. SUMMARY

[0004] The utility model embodiment provides a lubricating system, transmission system and wind generating set, can overcome the problem of big liquid supply resistance when bearing lubrication, adapts to a variety of application environments, improves the operation stability of bearing.

[0005] In the first aspect, according to the utility model embodiment, a kind of lubricating system is provided, for transmission assembly, transmission assembly includes main shaft, bearing seat and the bearing being connected between the two, lubricating system includes storage tank, conveying pipe and connecting pipeline, storage tank is configured to store lubricating medium;Conveying pipe has inlet and outlet in communication, conveying pipe is used to pass through bearing seat to make outlet towards bearing arrangement;Connecting pipeline is connected between storage tank and conveying pipe, and connecting pipeline includes first branch and second branch, and storage tank is connected with inlet by first branch and second branch respectively;Wherein, first branch is provided with first driving part and second driving part is arranged on second branch, and the driving pressure of first driving part is greater than the driving pressure of second driving part.

[0006] According to an aspect of the utility model embodiment, the lubricating system includes compensation tank, and the compensation tank is arranged on the first branch and located at the side of the first driving part close to the storage tank, the compensation tank is located at the side of the inlet away from the outlet, and the compensation tank is configured to store the lubricating medium from the storage tank.

[0007] According to an aspect of the utility model embodiment, the compensation tank is communicated with the first driving part, and at least part of the first driving part is arranged in the compensation tank, and the first driving part can drive the lubricating medium in the compensation tank to enter the conveying pipe.

[0008] According to an aspect of the utility model embodiment, the first driving part includes a shell and a moving body, and the moving body is arranged in the shell and movably connected with the shell, and the moving body is configured to reciprocate in the shell to push the lubricating medium in the compensation tank into the conveying pipe.

[0009] According to an aspect of the embodiment of the present application, the compensation tank comprises a tank body and a liquid level meter, the tank body is connected to the first branch and located between the first driving member and the storage tank, and the liquid level meter is arranged in the tank body and configured to detect the liquid level of the lubricating medium in the tank body.

[0010] According to an aspect of the embodiment of the present application, the lubricating system comprises a heating member, the heating member is arranged in the compensation tank and / or on the first branch, and the heating member is configured to heat the lubricating medium in the compensation tank and / or the first branch.

[0011] According to an aspect of the embodiment of the present application, the lubricating system comprises a pressurizing member, the pressurizing member is in communication with the inlet of the conveying pipe and capable of conveying a pressurizing medium into the conveying pipe, and the pressurizing member pushes the lubricating medium in the conveying pipe to flow by the pressurizing medium.

[0012] According to an aspect of the embodiment of the present application, the lubricating system comprises a power member, the power member is connected to the first driving member, and the power member is configured to provide driving force to the first driving member.

[0013] According to an aspect of the embodiment of the present application, the end of the conveying pipe away from the first branch is closed, and the outlet is arranged on the side wall of the conveying pipe and configured to face the bearing.

[0014] In a second aspect, the present application provides a transmission system, comprising a transmission assembly and the lubricating system as described above, the transmission assembly comprises a bearing seat, a main shaft and a bearing, the main shaft is inserted into the bearing seat and forms an installation cavity with the bearing seat, the bearing is arranged in the installation cavity and connected between the bearing seat and the main shaft; the lubricating system is connected to the transmission assembly, the conveying pipe is inserted into the bearing seat and extends into the installation cavity, and the outlet of the conveying pipe is in communication with the installation cavity and faces the bearing.

[0015] According to an aspect of the embodiment of the present application, the number of the conveying pipes is multiple, the first branch and the second branch are respectively connected to the inlets of the multiple conveying pipes, and the multiple conveying pipes are distributed around the circumference of the main shaft.

[0016] In a third aspect, the present application provides a wind turbine generator, comprising the transmission system as described above.

[0017] The utility model embodiment provides a kind of lubricating system, transmission system and wind turbine unit, by the connecting pipeline in lubricating system is set to the structural form of first branch and second branch, the lubricating medium in storage tank is driven into delivery pipe by first driving member and second driving member on two branches respectively, since the driving pressure of first driving member is greater than the driving pressure of second driving member, when the efficiency of lubricating medium driven by second driving member enters delivery pipe is lower, first driving member with greater driving pressure can be used to drive lubricating medium, and enter delivery pipe by first branch to complete the lubrication compensation of bearing in transmission assembly, improve the lubrication compensation capability to bearing, so that the lubricating system can satisfy more use environment, ensure the continuity of bearing lubrication, so that bearing has better lubricating effect. BRIEF DESCRIPTION OF DRAWINGS

[0018] The features, advantages and technical effects of the exemplary embodiments of the utility model will be described below with reference to the drawings.

[0019] Figure 1 It is a kind of lubricating system and the connection schematic diagram of transmission assembly of the utility model embodiment;

[0020] Figure 2 It is Figure 1 Local enlarged schematic view of A in it;

[0021] Figure 3 It is another kind of lubricating system and the connection schematic diagram of transmission assembly of the utility model embodiment;

[0022] Figure 4 It is still another kind of lubricating system and the connection schematic diagram of transmission assembly of the utility model embodiment;

[0023] Figure 5 It is a kind of lubricating system and the connection side view of transmission assembly of the utility model embodiment.

[0024] Reference signs:

[0025] 100-lubricating system;200-transmission assembly;201-main shaft;202-bearing seat;203-bearing;

[0026] 10-storage tank;20-delivery pipe;21-inlet;22-outlet;

[0027] 30-connecting pipeline;31-first branch;32-second branch;40-first driving member;41-housing;42-moving body;50-second driving member;

[0028] 60-compensation tank;61-tank;62-liquid level meter;70-heating element;80-pressurizing element;90-power element.

[0029] In the drawings, like reference numerals refer to like elements throughout. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the application. DETAILED DESCRIPTION

[0030] Features and exemplary embodiments of various aspects of the present application will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one of ordinary skill in the art that the present application can be practiced without some or all of these specific details. The description of the embodiments is merely illustrative of the present application and is not intended to limit the present application, as is apparent to one of ordinary skill in the art. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one of ordinary skill in the art that the present application can be practiced without some or all of these specific details. In other instances, well-known structures and functions have not been described in detail in order to not obscure the understanding of this description. Also, the description is made with reference to the accompanying drawings, in which size of some structures can be exaggerated for the sake of clarity.

[0031] The orientation words appearing in the following description are the directions shown in the drawings, and do not limit the specific structure of the lubricating system, the transmission system and the wind turbine generator unit of the present application. In the description of the present application, it should be further explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting" should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be directly connected, or can be indirectly connected. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] In order to better understand the present application, the following will be described in combination with Figures 1 to 5 The lubricating system, the transmission system and the wind turbine generator unit of the embodiments of the present application are described in detail.

[0033] Please refer to Figure 1 and Figure 2The utility model discloses a lubricating system 100 for transmission assembly 200, transmission assembly 200 includes main shaft 201, bearing seat 202 and bearing 203 connected between the two, lubricating system 100 includes storage tank 10, conveying pipe 20 and connecting pipeline 30, storage tank 10 is configured to store lubricating medium, conveying pipe 20 has the import 21 and the export 22 of intercommunication, and conveying pipe 20 is used to pass through bearing seat 202 to make the export 22 set up towards bearing 203, connecting pipeline 30 is connected between storage tank 10 and conveying pipe 20, and connecting pipeline 30 includes first branch 31 and second branch 32, and storage tank 10 is connected with import 21 through first branch 31 and second branch 32 respectively, wherein, first branch 31 is provided with first driving part 40 and second branch 32 is provided with second driving part 50, and the drive pressure of first driving part 40 is greater than the drive pressure of second driving part 50.

[0034] The lubricating system 100 in the embodiment can be applied to the field of wind power generation technology, and can be specifically used in the transmission assembly 200. Since the bearing 203 in the transmission assembly 200 needs to be continuously lubricated during the working process, in the embodiment, the lubricating medium in the storage tank 10 is driven into the conveying pipe 20 by using the connecting pipeline 30, and the bearing 203 is sprayed with the lubricating medium through the outlet 22 in the conveying pipe 20, so that the lubrication process of the bearing 203 is completed.

[0035] Alternatively, the transmission assembly 200 can be a component arranged between an impeller and a gear box, and the power is transmitted through the main shaft 201 and connected to the bearing seat 202 through the bearing 203. The lubricating system 100 needs to lubricate the operation of the bearing 203, so as to reduce the wear of the bearing 203 during rotation.

[0036] Alternatively, the storage tank 10 in the lubricating system 100 in the embodiment can be used as a main oil tank, mainly used for storing lubricating oil. The storage tank 10 can be a shared oil tank with the gear box. The connecting pipeline 30 is connected to the storage tank 10, and the connecting pipeline 30 is divided into the parallel first branch 31 and the second branch 32. The driving members on the two branches are used to drive the lubricating medium into the conveying pipe 20.

[0037] The conveying pipe 20 in the lubricating system 100 needs to be inserted into the bearing seat 202 and the outlet 22 thereof needs to be aligned with the position of the bearing 203. The first branch 31 and the second branch 32 need to be connected with the inlet 21 of the conveying pipe 20, so that the lubricating medium in the storage tank 10 is conducted to the conveying pipe 20 and sprayed out from the outlet 22, and the lubrication process at the position of the bearing 203 is completed.

[0038] In the embodiment, the connecting pipeline 30 is provided as the first branch 31 and the second branch 32, the first driving member 40 is arranged on the first branch 31, and the second driving member 50 is arranged on the second branch 32, the driving pressure of the first driving member 40 is greater than that of the second driving member 50, and when the driving pressure of the second driving member 50 cannot meet the effective flow of the lubricating medium, the first driving member 40 can be used to drive the lubricating medium.

[0039] Optionally, the second driving member 50 can be a lubricating pump structure, the second driving member 50 and the second branch 32 can be understood as the lubricating pipeline in the prior art, and in the embodiment, the first branch 31 parallel to the second branch 32 is added, and the first driving member 40 with greater driving pressure is used, for example, a plunger pump structure, which can increase the driving pressure of the lubricating medium to more than 1.0 MPa.

[0040] When the temperature of the lubricating medium in the storage tank 10 is low to increase the flow viscosity, or when the second driving member 50 in the prior art is stopped, the first driving member 40 with greater driving pressure can be used to form continuous lubrication compensation for the bearing 203 through the first branch 31, and optionally, the predetermined oil injection time and the oil injection frequency can be set to ensure the lubrication of the bearing 203.

[0041] The lubricating system 100 provided by the embodiment of the utility model, by setting the connecting pipeline 30 in the lubricating system 100 as the structure form of the first branch 31 and the second branch 32, using the first driving member 40 and the second driving member 50 on the two branches to drive the lubricating medium in the storage tank 10 into the conveying pipe 20, because the driving pressure of the first driving member 40 is greater than that of the second driving member 50, when the efficiency of the lubricating medium driven by the second driving member 50 entering the conveying pipe 20 is low, the first driving member 40 with greater driving pressure can be used to drive the lubricating medium, and the lubricating medium enters the conveying pipe 20 through the first branch 31 to complete the lubrication compensation for the bearing 203 in the transmission assembly 200, the lubrication compensation capacity for the bearing 203 is improved, the lubricating system 100 can meet more use environments, the continuity of the lubrication for the bearing 203 is ensured, and the bearing 203 has better lubrication effect.

[0042] As an optional embodiment, please refer to Figure 1 The lubricating system 100 includes the compensation tank 60, the compensation tank 60 is arranged on the first branch 31 and located on the side of the first driving member 40 close to the storage tank 10, the compensation tank 60 is located on the side of the inlet 21 away from the outlet 22, and the compensation tank 60 is configured to store the lubricating medium from the storage tank 10.

[0043] Optionally, the embodiment is provided with a compensation tank 60 on the first branch 31, and the main function of the compensation tank 60 is to store the lubricating medium from the storage tank 10, and in the process of compensation, the lubricating medium in the storage tank 10 first enters the compensation tank 60 from the first branch 31, and then enters the conveying pipe 20 from the compensation tank 60 for compensation, and the size of the compensation tank 60 can be set to be smaller than the size of the storage tank 10, so as to serve as a lubricating compensation auxiliary oil tank, and a one-way valve can be arranged on the pipeline between the storage tank 10 and the compensation tank 60 to avoid backflow of the lubricating medium.

[0044] Optionally, the embodiment can arrange the compensation tank 60 at the top position of the transmission assembly 200, which mainly considers that the existing storage tank 10 needs to share lubrication with the gear box, and is often arranged at the bottom of the transmission assembly 200, and when the bearing 203 is lubricated and compensated by the connecting pipeline 30, the lubricating medium at the bottom needs to be transmitted to the bearing 203 at the top position, and this process generates more power consumption.

[0045] Therefore, if the compensation tank 60 is arranged at the top position of the transmission assembly 200, the compensation tank 60 is closer to the top position of the bearing 203, and when the compensation tank 60 serves as a transfer and has a certain storage capacity of lubricating medium, the lubricating medium can be directly conveyed from the compensation tank 60 to the bearing 203, so as to reduce the compensation power consumption.

[0046] The embodiment of the utility model provides a kind of lubricating system 100, by being provided with compensation tank 60 on first branch 31, it utilizes the transfer and storage function of compensation tank 60, with certain oil storage capacity, while saving the compensation distance of oil tank to bearing 203, so as to have higher compensation response speed, improve compensation efficiency, with better compensation effect.

[0047] As an optional embodiment, please refer to Figure 1 The compensation tank 60 is in communication with the first driving member 40, at least a part of the first driving member 40 is arranged in the compensation tank 60, and the first driving member 40 can drive the lubricating medium in the compensation tank 60 to enter the conveying pipe 20.

[0048] For the process of driving the lubricating medium in the compensation tank 60 by the first driving member 40, the embodiment can arrange a part of the first driving member 40 in the compensation tank 60, so as to form direct contact with the lubricating medium in the compensation tank 60 and provide sufficient power for the flow of the lubricating medium.

[0049] Optionally, the components such as the piston rod in the first driving member 40 can be arranged in the compensation tank 60 and in direct contact with the lubricating medium, and the specific structure of the first driving member 40 is not specially limited in the application, and the first driving member 40 can be connected with the compensation tank 60 and drive the lubricating medium to form effective flow.

[0050] The utility model embodiment provides a kind of lubrication system 100, by at least part of first driving member 40 is arranged in compensation tank 60, improve the driving ability of lubricating medium in compensation tank 60, so it can more efficiently lubricate bearing 203.

[0051] As an optional embodiment, please refer to Figure 3 First driving member 40 includes shell 41 and mobile body 42, mobile body 42 is arranged in shell 41 and is movably connected with shell 41, and mobile body 42 is configured to reciprocate in shell 41 to push the lubricating medium in compensation tank 60 into delivery pipe 20.

[0052] Optionally, the structure of the first driving member 40 in the embodiment includes shell 41 and mobile body 42, and by the reciprocating movement of mobile body 42 in shell 41, the lubricating medium in compensation tank 60 connected therewith can be driven into delivery pipe 20, realizing the pressurized delivery of lubricating medium, so as to improve the driving pressure in first branch 31, and better realize the lubrication compensation of bearing 203.

[0053] Optionally, mobile body 42 can be a piston structure or a screw structure, and the structure of the first driving member 40 and mobile body 42 therein is not specially limited in the application, which can ensure that the reciprocating movement of mobile body 42 completes the pressurization of the lubricating medium in first branch 31.

[0054] The utility model embodiment provides a kind of lubrication system 100, by being arranged as the structure form that mobile body 42 reciprocates in shell 41 in first driving member 40, provide a kind of improve the mode of driving pressure of lubricating medium, so that first branch 31 obtains greater driving pressure to satisfy more compensation working conditions.

[0055] As an optional embodiment, please refer to Figure 3 Compensation tank 60 includes tank 61 and liquid level gauge 62, tank 61 is connected to first branch 31 and located between first driving member 40 and storage tank 10, and liquid level gauge 62 is arranged in tank 61, and liquid level gauge 62 is configured to detect the liquid level of lubricating medium in tank 61.

[0056] The embodiment sets the liquid level meter 62 in the box body 61 of the compensation tank 60, the liquid level meter 62 can detect the liquid level in the compensation tank 60 in real time, when the liquid level in the box body 61 is low, the lubricating medium in the storage tank 10 is conveniently transported to the compensation tank 60 through the first branch 31, and the subsequent compensation demand is met; when the liquid level in the box body 61 is high, the valve on the first branch 31 can be controlled in time to close, so that the oil supply from the storage tank 10 is avoided, so that the liquid level in the compensation tank 60 is always kept at a predetermined height, and the lubricating medium is driven by the first driving part 40 to lubricate the bearing 203.

[0057] The embodiment of the utility model provides a kind of lubricating system 100, by being set in the box body 61 of compensation tank 60 liquid level meter 62, the liquid level information in box body 61 can be acquired in time, it is convenient for staff to control the liquid level of lubricating medium, improve the liquid level control precision in compensation tank 60, to better meet the compensation lubrication demand of bearing 203.

[0058] As an optional embodiment, please refer to Figure 3 Lubricating system 100 includes heating part 70, heating part 70 is set in compensation tank 60 and / or first branch 31, heating part 70 is configured as heating lubricating medium in compensation tank 60 and / or first branch 31.

[0059] To ensure the lubricating effectiveness of lubricating system 100 in low temperature environment, heating part 70 is set in compensation tank 60 and / or first branch 31 in the embodiment, optionally, heater structure can be set in compensation tank 60, heating belt can be set on first branch 31, so that lubricating medium in compensation tank 60 and first branch 31 can be heated in time.

[0060] After heating lubricating medium in compensation tank 60 and first branch 31 by heating part 70, it can quickly restore fluidity, so that first driving part 40 is further pumped, the flow pressure of lubricating medium in first branch 31 is improved, and efficient compensation lubrication of bearing 203 is realized.

[0061] The embodiment of the utility model provides a kind of lubricating system 100, by being set in compensation tank 60 and first branch 31 heating part 70, lubricating medium in it can be heated in time, to better adapt to low temperature environment, so that lubricating system 100 can complete the lubrication compensation of bearing 203 in low temperature environment, with better adaptability.

[0062] As an optional embodiment, please refer to Figure 3The lubricating system 100 comprises a pressurizing member 80, which is communicated with the inlet 21 of the conveying pipe 20 and can convey pressurized medium into the conveying pipe 20, and the pressurizing member 80 pushes the lubricating medium in the conveying pipe 20 to flow by the pressurized medium.

[0063] Optionally, the pressurizing member 80 can be an air pump or the like, and the pressurizing member 80 is arranged at the inlet 21 of the conveying pipe 20, so that the lubricating medium in the conveying pipe 20 can be pressurized, specifically by filling the pressurized medium into the conveying pipe 20, and the pressurized medium can be air.

[0064] When the pressurizing member 80 is started, the pressurizing member 80 can fill the pressurized medium into the conveying pipe 20, and a one-way valve can be arranged on the pressurizing pipeline to prevent backflow of the pressurized medium, and the pressurized medium can further drive the lubricating medium to flow in the conveying pipe 20 and finally complete the oil injection process towards the bearing 203.

[0065] The utility model discloses an embodiment provides a kind of lubricating system 100, by being arranged at the inlet 21 of conveying pipe 20 pressurizing member 80, by the way of providing pressurized medium into conveying pipe 20 to the lubricating medium is pressurized, so that the lubricating medium in conveying pipe 20 has greater flow pressure and spray pressure, improve the efficiency of lubricating bearing 203, simultaneously, bearing 203 has better lubrication, heat dissipation and cleaning effect.

[0066] As an optional embodiment, please refer to Figure 4 The lubricating system 100 comprises a power member 90, which is connected with the first driving member 40, and the power member 90 is configured to provide driving force to the first driving member 40.

[0067] Optionally, the power member 90 can be the power source of the first driving member 40, such as a power supply or the like, so as to independently drive the first driving member 40.

[0068] In the embodiment, when the existing second driving member 50 is powered off and stopped, the power member 90 can independently supply power to the first driving member 40, and under the action of independent driving, the power consumption of the first driving member 40 is not affected, and the first branch 31 can always transport the lubricating medium, so as to ensure the continuous effectiveness of compensation lubrication.

[0069] The utility model discloses an embodiment provides a kind of lubricating system 100, by connecting power member 90 with first driving member 40, it can continuously provide power to first driving member 40, realizes the independent control of first driving member 40, improves the compensation sustainability of lubricating medium under multiple working conditions, and provides reliable guarantee for compensation lubrication process.

[0070] As an optional embodiment, please refer to Figure 2 The end of the conveying pipe 20 away from the first branch 31 is closed, and an outlet 22 is arranged on the side wall of the conveying pipe 20, which is configured to face the bearing 203.

[0071] Optionally, the outlet 22 can be arranged on the side wall of the conveying pipe 20 at a position close to the end of the conveying pipe 20, which is arranged to face the roller in the bearing 203, so that the pressurized lubricating medium is sprayed from the outlet 22 to the bearing 203 to complete the compensating lubrication process of the bearing 203.

[0072] Of course, the end of the conveying pipe 20 can also be arranged in a bent pipe structure, so that the outlet 22 of the bent pipe faces the position of the bearing 203, and when the lubricating medium is sprayed from the outlet 22, it can also be aligned with the bearing 203 to complete the compensating lubrication process. The specific structure of the conveying pipe 20 is not specially limited in the present application, and the conveying pipe 20 can pass through the bearing seat 202 to reach the position of the bearing 203.

[0073] The embodiment of the utility model provides a kind of lubricating system 100, by being arranged on the side wall of conveying pipe 20 towards the outlet 22 of bearing 203, it is guaranteed to spray accuracy of the lubrication position of bearing 203, so that lubricating medium can be smoothly sprayed from outlet 22 to complete lubrication process.

[0074] According to the embodiment of the utility model provides a kind of transmission system, including transmission assembly 200 and the lubricating system 100 as described above, transmission assembly 200 includes bearing seat 202, main shaft 201 and bearing 203, main shaft 201 is inserted in bearing seat 202 and is formed between bearing seat 202 and the installation cavity, bearing 203 is arranged in installation cavity and is connected between bearing seat 202 and main shaft 201;Lubricating system 100 is connected with transmission assembly 200, conveying pipe 20 is inserted and is arranged in bearing seat 202 and extends to installation cavity, and the outlet 22 of conveying pipe 20 is communicated with installation cavity and is arranged towards bearing 203.

[0075] Optionally, the transmission system in the embodiment can be a transmission system in a wind turbine generator set, wherein the transmission assembly 200 is connected between the impeller and the generator, and the lubricating system 100 is mainly used for lubricating the bearing 203 between the main shaft 201 and the bearing seat 202. The conveying pipe 20 in the lubricating system 100 passes through the bearing seat 202 to reach the position of the bearing 203, so that the outlet 22 is aligned with the bearing 203 to complete the pressurized injection of the lubricating medium.

[0076] The use environment of the lubricating system 100 is not limited to the wind turbine generator set, and it can also be used in the compensating lubrication of the bearing 203 in other technical fields, which is not limited in the present application.

[0077] Optionally, asFigure 5 As shown, the number of the delivery pipes 20 can be multiple, the first branch 31 and the second branch 32 are connected with the inlets 21 of the multiple delivery pipes 20 respectively, the multiple delivery pipes 20 are distributed around the circumference of the main shaft 201, so that the multiple positions of the bearing 203 can be simultaneously compensated and lubricated by the multiple delivery pipes 20, the lubrication range of the bearing 203 is increased, and the overall lubrication efficiency is improved, and the specific number of the delivery pipes 20 and the plug-in position with the bearing seat 202 are not specially limited.

[0078] According to the embodiment of the utility model provides a kind of wind generating set, including the transmission system as described above.

[0079] The embodiment of the utility model provides a kind of lubrication system, transmission system and wind generating set, by being arranged as the structural form of first branch and second branch in connecting pipeline in lubrication system, the lubricating medium in storage tank is driven into delivery pipe by first driving member and second driving member on two branches respectively, since the driving pressure of first driving member is greater than the driving pressure of second driving member, when the efficiency of lubricating medium driven by second driving member enters delivery pipe is lower, first driving member with greater driving pressure can be used to drive lubricating medium, and it is entered into delivery pipe by first branch to complete the lubrication compensation of bearing in transmission assembly, improve the lubrication compensation ability of bearing, so that the lubrication system can satisfy more use environment, ensure the continuity of bearing lubrication, so that bearing has better lubrication effect.

[0080] Although the utility model has been described with reference to the preferred embodiments, various improvements can be made and the components therein can be replaced with equivalents without departing from the scope of the utility model. In particular, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A lubrication system (100) for use in a transmission assembly (200) comprising a main shaft (201), a bearing housing (202) and a bearing (203) connected therebetween, characterized in that, The lubricating system (100) comprises: a storage tank (10) configured to store lubricating medium; a delivery pipe (20) having an inlet (21) and an outlet (22) connected in communication, the delivery pipe (20) being arranged to pass through the bearing seat (202) so that the outlet (22) is arranged towards the bearing (203); a connecting pipeline (30) connected between the storage tank (10) and the delivery pipe (20), the connecting pipeline (30) comprising a first branch (31) and a second branch (32), the storage tank (10) being connected with the inlet (21) through the first branch (31) and the second branch (32) respectively; wherein the first branch (31) is provided with a first driving member (40) and the second branch (32) is provided with a second driving member (50), the driving pressure of the first driving member (40) being greater than that of the second driving member (50).

2. The lubrication system (100) according to claim 1, characterized in that The lubricating system (100) comprises a compensation tank (60) arranged in the first branch (31) and located on the side of the first driving member (40) close to the storage tank (10), the compensation tank (60) being located on the side of the inlet (21) away from the outlet (22), the compensation tank (60) being configured to store lubricating medium from the storage tank (10).

3. The lubrication system (100) according to claim 2, characterized in that The compensation tank (60) is in communication with the first driving member (40), at least part of the first driving member (40) being arranged in the compensation tank (60), the first driving member (40) being capable of driving the lubricating medium in the compensation tank (60) into the delivery pipe (20).

4. The lubrication system (100) according to claim 3, characterized in that The first driving member (40) comprises a housing (41) and a moving body (42), the moving body (42) being arranged in the housing (41) and movably connected with the housing (41), the moving body (42) being configured to reciprocally move in the housing (41) to push the lubricating medium in the compensation tank (60) into the delivery pipe (20).

5. The lubrication system (100) of claim 2, characterized in that The compensation tank (60) comprises a tank body (61) and a liquid level meter (62), the tank body (61) being connected to the first branch (31) and located between the first driving member (40) and the storage tank (10), the liquid level meter (62) being arranged in the tank body (61), the liquid level meter (62) being configured to detect the liquid level of the lubricating medium in the tank body (61).

6. The lubrication system (100) of claim 2, characterized in that The lubricating system (100) comprises a heating member (70) arranged in the compensation tank (60) and / or on the first branch (31), the heating member (70) being configured to heat the lubricating medium in the compensation tank (60) and / or the first branch (31).

7. The lubrication system (100) according to any one of claims 1 to 6, characterized in that The lubrication system (100) comprises a pressurizing member (80) in communication with the inlet (21) of the delivery pipe (20) and capable of delivering pressurized medium into the delivery pipe (20), the pressurizing member (80) pushing the lubricating medium in the delivery pipe (20) to flow by the pressurized medium.

8. The lubrication system (100) according to any one of claims 1 to 6, characterized in that The lubrication system (100) comprises a power member (90) connected with the first driving member (40), the power member (90) being configured to provide driving force to the first driving member (40).

9. The lubrication system (100) according to any one of claims 1 to 6, characterized in that The end of the delivery pipe (20) away from the first branch (31) is closed, and the outlet (22) is arranged on the side wall of the delivery pipe (20) and is configured to be directed towards the bearing (203).

10. A transmission system characterized by, The transmission assembly (200) comprises a bearing seat (202), a main shaft (201) and a bearing (203), the main shaft (201) is inserted into the bearing seat (202) to form an installation cavity therebetween, and the bearing (203) is arranged in the installation cavity and connected between the bearing seat (202) and the main shaft (201). The lubrication system (100) according to any one of claims 1 to 9, connected with the transmission assembly (200), the delivery pipe (20) is inserted into the bearing seat (202) and extends into the installation cavity, and the outlet (22) of the delivery pipe (20) is in communication with the installation cavity and is arranged towards the bearing (203). The number of the delivery pipes (20) is multiple, the first branch (31) and the second branch (32) are respectively connected with the inlets (21) of the multiple delivery pipes (20), and the multiple delivery pipes (20) are distributed around the circumference of the main shaft (201).

11. The transmission system of claim 10, wherein, The transmission system comprises the transmission assembly according to any one of claims 10 to 11.

12. A wind power unit, characterized in that ​

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