Wind generating set lubricating system and wind generating set

Abstract

The utility model provides a wind generating set lubricating system and a wind generating set. The wind generating set lubricating system comprises a storage tank body, a seat shell, an oil pumping assembly and a distributor. A push plug is arranged in the storage tank body, a spring assembly is arranged between the push plug and a storage tank cover plate of the storage tank body, and the push plug pushes out lubricating oil in the storage tank body through the spring assembly. A ventilation cylinder is arranged on the storage tank body and is used for communicating an inner cavity of the storage tank body with the outside; an oil outlet of the storage tank communicates with an inner cavity of the base shell, the inner cavity of the base shell communicates with the distributor through the oil pumping assembly, and the oil pumping assembly is used for pumping lubricating oil in the base shell into the distributor. The lubricating system can work for a long time in a severe environment, and is high in reliability, high in cost performance, good in operability and compact in structure.

Description

Technical Field

[0001] The utility model relates to the technical field of lubrication equipment, in particular to a lubrication system for a wind turbine generator set and a wind turbine generator set, in particular to a centralized lubrication system for a wind turbine generator set and a power device thereof. Background Art

[0002] The primary function of a centralized lubrication system for a wind turbine and its power unit is to provide lubrication to the wind turbine's pitch, main shaft, yaw, and generator. Existing lubrication systems typically utilize manual lubrication or simple automatic lubrication devices, requiring regular manual inspection and refilling, and preventing remote monitoring and parameter adjustment. This new system utilizes a progressive distributor, providing metered lubrication to each lubrication point. Its structural design simplifies fault detection and facilitates timely maintenance. Utility Model Content

[0003] In view of the defects in the prior art, the purpose of the present invention is to provide a wind turbine generator set lubrication system and a wind turbine generator set.

[0004] According to the utility model, a lubrication system for a wind turbine generator set is provided, comprising: a storage tank, a seat shell, an oil pump assembly and a distributor;

[0005] A push plug is provided in the storage tank body, and a spring assembly is provided between the push plug and the storage tank cover plate of the storage tank body, and the push plug pushes the lubricating oil in the storage tank body out through the spring assembly;

[0006] The storage tank body is provided with a vent cylinder, and the vent cylinder is used to connect the inner cavity of the storage tank body with the outside;

[0007] The oil outlet of the storage tank is communicated with the inner cavity of the seat shell, and the inner cavity of the seat shell is communicated with the distributor through the oil pump assembly. The oil pump assembly is used to pump the lubricating oil in the seat shell into the distributor.

[0008] Preferably, the oil pump assembly includes a drive motor, an eccentric wheel and a plunger pump valve;

[0009] The eccentric wheel is connected to the driving end of the driving motor, and the plug rod of the plunger pump valve is connected to the eccentric wheel;

[0010] The driving motor is drivingly connected to the eccentric wheel, and the eccentric wheel drives the plug rod of the plunger pump valve to reciprocate.

[0011] Preferably, a liquid level sensor is provided on the storage tank body, and the liquid level sensor is used to detect the liquid level of the lubricating oil in the storage tank body.

[0012] Preferably, an overflow valve is provided on the plunger pump valve, and the plunger pump valve is connected to the distributor through the overflow valve.

[0013] Preferably, the distributor is provided in plurality, and the plurality of distributors are arranged in a progressive manner.

[0014] Preferably, the distributor is provided in two parts, namely a primary distributor and a secondary distributor;

[0015] The primary distributor is connected to the oil pump assembly, and the secondary distributor is connected to the primary distributor.

[0016] The utility model also provides a wind generator set, comprising the above-mentioned wind generator set lubrication system.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The oil quantity adjustment function of the progressive distributor of this utility model allows users to precisely control the amount of lubricant according to their needs, and its structural design makes fault detection simple and convenient for timely maintenance. The system can work for a long time in extremely low temperature environments and has high reliability.

[0019] 2. The system of this utility model has a high degree of localization and has first-class cost performance. Under the premise of ensuring the quality of system components, domestic products and standard accessories are used to the maximum extent to reduce costs and improve competitiveness.

[0020] 3. In order to better balance the appearance and structure, the utility model adopts a large number of open mold parts in the system design, achieving a beautiful and elegant appearance and a clever and compact structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present invention will become more apparent from the detailed description of the non-limiting embodiments with reference to the following drawings:

[0022] Figure 1 This is a structural diagram of the lubrication system of a wind turbine generator set;

[0023] Figure 2 To highlight the structural diagram of the storage tank and the seat shell;

[0024] Figure 3 To highlight the structural diagram of the drive motor and plunger pump valve;

[0025] Figure 4 Schematic diagram of the structure of a 7-tooth pinion;

[0026] Figure 5 It is a structural diagram of an 8-tooth pinion;

[0027] Figure 6 It is a structural diagram of the distributor;

[0028] Figure 7 This is the schematic diagram of the lubrication system of a wind turbine.

[0029] The figure shows:

[0030] DETAILED DESCRIPTION

[0031] The present invention will be described in detail below with reference to specific embodiments. The following embodiments will help those skilled in the art further understand the present invention, but are not intended to limit the present invention in any way. It should be noted that a person skilled in the art may make various variations and improvements without departing from the scope of the present invention. Such variations and improvements are all within the scope of protection of the present invention.

[0032] Example 1:

[0033] like Figure 1-6 As shown, this embodiment provides a lubrication system for a wind turbine generator set, comprising: a storage tank body 1, a base shell 2, an oil pump assembly, and a distributor 3. A push plug 4 is provided within the storage tank body 1, with a spring assembly disposed between the push plug 4 and the storage tank cover 18 of the storage tank body 1. The push plug 4 pushes the lubricating oil within the storage tank body 1 through the spring assembly. A vent 5 is provided on the storage tank body 1, which is used to connect the interior of the storage tank body 1 to the outside world. The oil outlet of the storage tank body 1 is connected to the interior of the base shell 2, which is connected to the distributor 3 via the oil pump assembly. The oil pump assembly is used to pump the lubricating oil within the base shell 2 into the distributor 3. A liquid level sensor 9 is provided on the storage tank body 1, which is used to detect the liquid level of the lubricating oil within the storage tank body 1. A pull rod 17 is provided on the storage tank body 1. An oil filling connector 20 is provided on the base shell 2.

[0034] The function of the pull rod 17 is to fix the storage tank body 1 on the base shell 2 using the storage tank cover 18 and connect them with bolts.

[0035] The distributor 3 is provided in multiple configurations, and the multiple distributors 3 are provided in a progressive manner. The distributor 3 is provided in two configurations, namely, a primary distributor and a secondary distributor; the primary distributor is connected to the oil pump assembly, and the secondary distributor is connected to the primary distributor. The distributor 3 includes a distributor valve block, an oil port one-way valve, and a distributor connector 19. Figure 1 As shown, A is a primary distributor, and B and C are secondary distributors. A cycle counting switch 15 is provided on the primary distributor.

[0036] Distributor 3 consists of a distributor valve block 21 and a distributor connector 19 with a check valve. The distributor valve block 21 is the main body of the distributor. Grease is pumped into the distributor valve block 21 via a high-pressure hose. The grease is evenly distributed and then transported to the next stage via the distributor connector. The distributor valve block 21 and distributor connector 19 are threaded together, and a check valve is built into the distributor connector 19 to prevent backflow of grease.

[0037] The oil pump assembly includes a drive motor 6, an eccentric wheel 7, and a plunger pump valve 8. The eccentric wheel 7 is connected to the drive end of the drive motor 6, and the plunger pump valve 8's plug rod is connected to the eccentric wheel 7. The drive motor 6 is in driving connection with the eccentric wheel 7, which drives the plunger pump valve 8's plug rod to reciprocate. The plunger pump valve 8 is provided with a relief valve 10, which connects the plunger pump valve 8 to the distributor 3 through the relief valve 10.

[0038] This embodiment uses a progressive distributor, which can provide metered lubrication for each lubrication point, and its structural design makes fault detection simple and convenient for timely maintenance.

[0039] In this embodiment, the liquid level sensor and the cycle counter switch can be used to observe whether the relevant parameters are normal and make manual adjustments in time.

[0040] This embodiment also provides a wind turbine generator set, including the above-mentioned wind turbine generator set lubrication system.

[0041] The lubrication system of this embodiment primarily comprises a storage tank, a motor-pump system assembly, a distributor assembly, and a PLC automatic controller. The main functions of the components of this centralized lubrication system for wind turbine generators are as follows: 1) The storage tank primarily stores grease; 2) The motor-pump system assembly primarily serves as the system's power unit. The motor, through its shaft, drives the eccentric wheel, causing the plunger pump valve affixed to the eccentric wheel to perform intermittent reciprocating motion, thereby completing the grease suction and pumping process, outputting high-pressure grease and establishing sufficient oil pressure, allowing the high-pressure grease to enter various lubrication points in a predetermined ratio through each distributor; 3) The distributor primarily distributes the grease according to the settings; 4) The PLC controller serves as the control device for the entire system, controlling the on / off switching of the motor.

[0042] This system is designed for the harsh working environment of wind turbines and has the following advantages compared with existing similar products: 1) The system can work for a long time in harsh environments with high reliability; 2) The system has a high degree of localization and has first-class cost performance; 3) It is easy to operate and maintain and meets ergonomic requirements; 4) It has a beautiful appearance and a compact structure.

[0043] Example 2:

[0044] This embodiment differs from Example 1 in that the wind turbine lubrication system further includes a PLC controller 11, which is electrically connected to the drive motor 6 and periodically outputs current at a preset time, causing the drive motor 6 to drive the eccentric wheel 7 in intermittent reciprocating motion. An inductive sensor 12 is provided on the distributor 3; this inductive sensor 12 is linked to the plunger rod in the distributor 3, which is equipped with a probe. The inductive sensor 12 detects the reciprocating motion of the probe and converts it into an electrical signal, which is transmitted to the PLC controller 11 to monitor the lubricant.

[0045] This embodiment will connect the liquid level sensor and cycle counter switch to the PLC to achieve remote monitoring of the system.

[0046] The base housing 2 is used to secure the entire device. Connected to its lower portion is the motor housing 13, which houses a DC drive motor 6, serving as the power unit. A display screen 16 is provided on the motor housing 13. The cycle counter switch 15 is an inductive sensor. When the dispenser is operating normally, the plunger rod in the dispenser valve block reciprocates to compress and expel the grease, reminiscent of the reciprocating motion of the piston rod of an air pump. The plunger rod is equipped with a metal indicator needle, which reciprocates with the plunger rod, extending and retracting. When extended, it sweeps across the sensing area of ​​the cycle counter switch 15, which converts the signal into an electrical signal and transmits it to the PLC controller. When retracted, the signal stops. The indicator needle then extends again, and the cycle counter switch 15 outputs a signal again. The system then records the number of signal transmissions. Changes in the numerical value can be used to determine whether the system is operating normally, and the amount of grease used in the system can also be used to determine the amount of grease used. The display screen 16 is used to display the cumulative number of reciprocating motions recorded by the cycle counter switch 15, as well as the oil level of the storage tank 1, and is also used to control the operation of the system.

[0047] like Figure 7 As shown, oil is first supplied to the main distributor 301 , and the main distributor 301 supplies oil to the pinion 22 through the secondary distributor 302 .

[0048] Example 3:

[0049] Those skilled in the art may understand this embodiment as a more specific description of Embodiment 1.

[0050] This embodiment provides a centralized lubrication device for a wind turbine generator set, which includes: a storage tank, a liquid level sensor, a PLC automatic controller, a safety valve, an electric lubrication pump, a cam, an inductive sensor, a working oil port, a lubrication pinion and a progressive distributor (including a primary or secondary distributor or more).

[0051] The storage tank is respectively connected to the electric lubrication pump group and the PLC automatic controller, the liquid level sensor, the safety valve, the inductive sensor and the working oil port, and the progressive distributor is connected to the working oil port; the progressive distributor (including a first-stage distributor, a second-stage distributor or more) assembly includes a distributor valve block, an inductive sensor, an oil port check valve, and a quick-connect connector;

[0052] When the device is running, the automatic controller outputs 24V DC power according to a preset time period, causing the lubrication pump motor to drive the cam to perform intermittent reciprocating motion, completing the grease suction and pumping process, outputting high-pressure grease, and establishing sufficient oil pressure, so that the high-pressure grease can enter each lubrication point in a quantitative manner through each distributor according to the pre-adjusted ratio.

[0053] The storage tank is provided with a liquid level sensor for monitoring the liquid level of the grease; when the oil level of the device reaches the set alarm point, the liquid level alarm will be activated;

[0054] When the pressure of the high-pressure grease exceeds the set pressure of the safety valve, the high-pressure grease will overflow from the safety valve back to the storage tank, thereby protecting the lubrication pump and the system's high-pressure pipeline from damage.

[0055] The distributor (including primary distributor, secondary distributor or more) can inject grease into each point that needs lubrication in a certain amount in proportion and order;

[0056] The centralized lubrication system lubricates the inner ring gear of the bearing mainly by pumping oil through the lubrication point on the lubrication pinion, which then engages with the drive gear that drives the inner ring of the bearing to rotate, thereby lubricating the drive gear, and the drive gear lubricates the inner ring of the bearing.

[0057] When the lubricating grease is continuously pumped into the distributor, the plunger pressure plate in the storage tank will use the spring force to continuously push the grease under the oil screen plate so that it can smoothly enter the plunger pump;

[0058] This embodiment also provides a centralized lubrication system for a wind turbine generator set, including the above-mentioned power device.

[0059] The centralized lubrication system for wind turbine generator sets and the power device thereof of this embodiment can work for a long time in harsh environments, and have high reliability, high cost performance, good operability and compact structure.

[0060] Example 4:

[0061] Those skilled in the art may understand this embodiment as a more specific description of Embodiment 1 and Embodiment 2.

[0062] The technical problem to be solved by this embodiment is to provide a power device to overcome the defects of the power device in the prior art, such as unstable power, low reliability, and inconvenient maintenance.

[0063] This embodiment solves the above technical problems through the following technical solutions:

[0064] A power device comprises a storage tank and its components, wherein the components comprise a liquid level sensor, a grease push plug, a push plug spring, an air outlet cylinder and the like.

[0065] In this embodiment, the grease pusher is connected to the tank body by a spring. When the grease around the plunger pump valve is pumped away, the spring force pushes the pusher to push the grease toward the plunger pump valve, ensuring a continuous supply of grease. The outlet cylinder is vented to the atmosphere, keeping the pressure inside and outside the storage tank consistent, allowing the grease to be pushed continuously.

[0066] The liquid level sensor in this embodiment can monitor the grease in real time to ensure the safe operation of the lubrication device.

[0067] The motor pump system components include a scraper assembly, an eccentric assembly, a plunger pump assembly, an overflow valve assembly, etc.; the scraper assembly and the eccentric assembly are both connected to the motor shaft, and the rotation of the motor will drive the scraper to rotate, which stirs the grease; the rotation of the eccentric will cause the plunger pump valve close to it to perform intermittent reciprocating motion, and one reciprocating motion of the plunger pump valve completes a grease suction and pumping process, outputting high-pressure grease, so that the high-pressure grease enters each lubrication point in a quantitative manner through each distributor according to a pre-adjusted ratio.

[0068] The overflow valve of this embodiment is set to an overflow pressure of 350 bar and is mainly used as a system safety valve to prevent the system pressure from being too high and causing damage to components.

[0069] The oil scraper in this embodiment will rotate continuously along with the motor shaft to stir the grease, thereby removing air from the grease and improving lubrication efficiency.

[0070] The distributor assembly includes a distributor valve block, an inductive sensor, a small gear, etc. The process holes of the distributor valve block use ball plugs, which can greatly reduce the valve block space, improve the pressure resistance level, and have the characteristics of compact space and high safety. In addition, according to the needs of different scenarios, distributor valve blocks with multiple outlets are available, such as Figure 6 As shown, there are 8 ports.

[0071] The inductive sensor in this embodiment can record the reciprocating movement of the plunger in the distributor valve block, and then be used to monitor the operation of the system. Its advantages are compact structure, stable performance, and real-time detection of the distributor.

[0072] In this embodiment, if Figure 4 and Figure 5 As shown, the pinion assembly is divided into two types: 7-teeth and 8-teeth to meet the meshing needs of different gears. The pinion is made of PA plastic and uses a multi-layer structure. It has the characteristics of light weight, high strength, corrosion resistance and high temperature resistance.

[0073] In this embodiment, the power device can provide continuous and stable lubrication for the pitch system, main shaft system, yaw system and generator set of the wind turbine generator set.

[0074] The positive progress of this embodiment is: 1) the system can work for a long time in harsh environments with high reliability; 2) the system has a high degree of localization and has first-class cost performance; 3) it is easy to operate and maintain and meets ergonomic requirements; 4) it has a beautiful appearance and a compact structure.

[0075] Example 5:

[0076] Those skilled in the art may understand this embodiment as a more specific description of Embodiment 1 and Embodiment 2.

[0077] like Figure 2 and Figure 3 As shown, this embodiment provides a centralized lubrication system for a wind turbine generator set and its power unit. The power unit includes a base housing 2, which serves to secure the entire system. Connected below is a motor housing 13, which houses a DC drive motor 6, forming the power unit. Connected above is a storage tank 1. A plunger pump valve 8 is mounted on the base housing 2, and three additional holes are reserved for backup, plugged with plunger pump valve pre-hole plugs 14. A relief valve 10 is mounted on the plunger pump valve 8 and serves primarily as a system safety valve, preventing excessive system pressure from damaging components and enhancing safety. A display screen 16 is provided on the motor housing 13.

[0078] Liquid level sensor 9, fixed to tank cover 13, is inserted into tank body 1, with its front end resting on the oil scraper, monitoring the grease level. A plunger 4 extends through the level sensor rod and is positioned between the tank cover 13 and the plunger with two conical springs. This pushes the grease around the plunger pump valve, improving the reliability of the grease supply.

[0079] When the grease is slowly consumed, the push plug 4 will be slowly pushed downwards, and at this time the air will pass through the breather 5 to fill the space vacated by the grease, so that the upper and lower pressures in the storage tank are balanced, so that the system can smoothly and continuously pump out high-pressure grease.

[0080] The pumped grease will first pass through the relief valve 10, the pressure relief port of the relief valve 10 is connected to the storage tank. When the system pressure is too high, the relief valve 10 opens and the grease will directly return to the storage tank, ensuring the safety of the system. The grease passes through the relief valve 10 and enters the main distributor through the high-pressure hose. Figure 6 As shown, the dispenser 3 is equipped with an inductive sensor 12, which is linked to the distribution plunger rod in the dispenser 3. The plunger rod linked to the inductive sensor 12 is equipped with a probe. The inductive sensor 12 can sense the reciprocating motion of the probe and convert it into an electrical signal to transmit to the PLC controller 11 to realize the monitoring of the grease.

[0081] like Figure 4 and Figure 5 The following diagram shows the lubricating pinions, 7 and 8, respectively, which are used to lubricate the inner ring gear of the bearing. Oil is pumped through the lubrication points on the lubricating pinions, which then mesh with the drive gear that rotates the bearing inner ring, thereby lubricating the drive gear. The drive gear then lubricates the bearing inner ring.

[0082] The lubrication system of the utility model can work for a long time in a harsh environment, has high reliability, high cost performance, good operability and compact structure.

[0083] In the description of this application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0084] The above describes specific embodiments of the present invention. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art may make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. The embodiments of this application and the features in the embodiments may be combined with each other in any manner unless there is a conflict.

Claims

1. A lubrication system for a wind turbine generator set, characterized in that: include: Storage tank (1), seat shell (2), oil pump assembly and distributor (3); A push plug (4) is provided in the storage tank body (1), and a spring assembly is provided between the push plug (4) and the storage tank cover plate (18) of the storage tank body (1). The push plug (4) pushes the lubricating oil in the storage tank body (1) out through the spring assembly; The storage tank body (1) is provided with a vent cylinder (5), and the vent cylinder (5) is used to connect the inner cavity of the storage tank body (1) with the outside; The oil outlet of the storage tank body (1) is in communication with the inner cavity of the seat shell (2), and the inner cavity of the seat shell (2) is in communication with the distributor (3) via the oil pump assembly. The oil pump assembly is used to pump the lubricating oil in the seat shell (2) into the distributor (3).

2. The lubrication system for a wind turbine generator set according to claim 1, characterized in that: The oil pump assembly comprises a drive motor (6), an eccentric wheel (7) and a plunger pump valve (8); The eccentric wheel (7) is connected to the driving end of the driving motor (6), and the plug rod of the plunger pump valve (8) is connected to the eccentric wheel (7); The driving motor (6) is drivingly connected to the eccentric wheel (7), and the eccentric wheel (7) drives the plug rod of the plunger pump valve (8) to reciprocate.

3. The lubrication system for a wind turbine generator set according to claim 1, characterized in that: A liquid level sensor (9) is provided on the storage tank body (1), and the liquid level sensor (9) is used to detect the liquid level of the lubricating oil in the storage tank body (1).

4. The lubrication system for a wind turbine generator set according to claim 2, characterized in that: The plunger pump valve (8) is provided with an overflow valve (10), and the plunger pump valve (8) is connected to the distributor (3) via the overflow valve (10).

5. The lubrication system for a wind turbine generator set according to claim 1, characterized in that: The distributor (3) is provided in plurality, and the plurality of distributors (3) are provided in a progressive manner.

6. The lubrication system for a wind turbine generator set according to claim 5, characterized in that: The distributor (3) is provided in two parts, namely a primary distributor (3) and a secondary distributor (3); The primary distributor (3) is connected to the oil pump assembly, and the secondary distributor (3) is connected to the primary distributor (3).

7. A wind turbine generator set, characterized in that: A wind turbine generator set lubrication system comprising the lubrication system according to any one of claims 1 to 6.

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