Novel portable gear oil filtering device and variable pitch gear box of wind generating set

Abstract

The utility model discloses a novel portable gear oil filtering device and a variable pitch gear box of a wind generating set. Comprising a gear oil filtering device main body, an oil inlet pipe, an oil outlet pipe, a main body integration oil pump module, a filtering module, an oil product online detection module and a communication module. The oil pump module drives gear oil to circulate, the filtering module is provided with filtering units with different precisions through standardized interfaces to realize multi-stage filtering, the oil product online detection module monitors the particle state in real time by using a laser particle counter, and the communication module supports wired / wireless data transmission to an external terminal. The device can be flexibly installed on a cabin or a hub, a pipeline is connected in a sealed mode through a self-locking type quick connector, and an anti-overflow valve is arranged to guarantee safety. The device realizes efficient purification, real-time monitoring and remote operation and maintenance of gear oil, improves the reliability of equipment, and reduces the maintenance cost. The variable pitch gearbox of the wind generating set is integrated with the device, the service life is remarkably prolonged, and the high-altitude operation requirement is met.

Description

Technical Field

[0001] This utility model belongs to the technical field of wind power generation equipment, specifically relating to a novel portable gear oil filter device and a pitch gearbox for wind turbine generator sets. Background Technology

[0002] With the continuous development of wind power generation technology, the single-unit capacity of wind turbines is increasing, and the rotor diameter is also increasing, leading to a more severe working environment for pitch gearboxes. As one of the key components of a wind turbine, the cleanliness of the gear oil inside the pitch gearbox directly affects its service life and operational reliability.

[0003] Currently, traditional methods for maintaining gear oil in pitch gearboxes mainly have the following problems:

[0004] 1. After a certain number of years of use, the gear oil condition of the pitch gearbox of a wind turbine is usually checked by sampling or judged by experience to see if the gear oil has reached the replacement period. It is impossible to monitor the changes in the condition of the gear oil in real time, which may cause the best maintenance time to be missed.

[0005] 2. When changing the gear oil in the pitch gearbox of a wind turbine, the oil in the gearbox is usually drained first, then flushed, and then new gear oil is added. This method is complicated and time-consuming. Especially during the peak wind season, it is impossible to operate on the turbine, which affects the power generation efficiency. In addition, the waste oil is difficult to dispose of and pollutes the environment, and cannot be recycled.

[0006] In view of this, it is necessary to develop a new type of portable gear oil filtration device and a pitch gearbox for wind turbine generators to solve the above problems. Utility Model Content

[0007] The purpose of this invention is to provide a novel portable gear oil filtration device and a pitch gearbox for wind turbine generator sets. When maintaining the gear oil in the pitch gearbox, it can quickly detect particulate impurities in the gear oil, making it easy to operate in high-altitude environments. This achieves simple and efficient purification of particulate impurities in the gear oil, thereby improving the service life and operational reliability of the pitch gearbox.

[0008] In a first aspect, this utility model proposes a novel portable gear oil filtration device, comprising:

[0009] The gear oil filtration device includes a main body comprising an oil pump module, a filter module, an online oil quality monitoring module, and a communication module; an oil inlet pipe connecting the main body of the gear oil filtration device to the oil outlet of the pitch gearbox; and an oil outlet pipe connecting the main body of the gear oil filtration device to the oil inlet of the pitch gearbox. The oil pump module drives the gear oil to circulate between the pitch gearbox and the main body of the gear oil filtration device. The filter module includes at least one filter unit for filtering impurities in the gear oil. The online oil quality monitoring module detects the particulate matter state of the gear oil in the oil inlet and outlet pipes and generates data. The communication module transmits the particulate matter state data detected by the online oil quality monitoring module to an external terminal.

[0010] By adopting the above technical solution, this device can achieve real-time monitoring of gear oil particulate matter status, efficient filtration of impurities, and is portable and simple in structure. It can also realize remote data transmission and intelligent early warning, thereby improving the service life and operational reliability of the pitch gearbox.

[0011] Preferably, the filter module is provided with a mounting part with multiple standardized interfaces, and the multiple mounting parts are used to install filter units with different filtration precisions.

[0012] By adopting the above technical solution, the modular design of the filter unit is realized through the standardized interface installation part. Filter units of different precision can be combined as needed, improving filtration efficiency and flexibility, and facilitating maintenance and replacement.

[0013] More preferably, the dimensions of the standardized interface of the mounting part are perfectly matched with the interface dimensions of the filter unit.

[0014] By adopting the above technical solutions, the standardized interface dimensions are perfectly matched, ensuring that the filter unit can be installed quickly and accurately, eliminating the risk of leakage caused by installation errors, improving sealing performance and system reliability, and reducing maintenance difficulty.

[0015] Preferably, the filtration unit includes at least a first filter element and a second filter element, wherein the filtration accuracy of the first filter element is lower than that of the second filter element.

[0016] By adopting the above technical solution, multi-stage filtration is achieved by setting filter elements with different precision. The first filter element intercepts large particulate impurities, and the second filter element finely filters out tiny particles, which significantly improves filtration efficiency and extends the service life of the filter elements.

[0017] Preferably, the oil pump module is configured to generate negative pressure at the oil inlet of the gear oil filter body and positive pressure at the oil outlet of the gear oil filter body to drive gear oil circulation.

[0018] By adopting the above technical solution, and through the configuration of an oil pump with negative pressure oil inlet and positive pressure oil outlet, a stable pressure difference is formed to drive gear oil circulation, effectively avoiding cavitation, improving filtration efficiency, and ensuring stable and reliable system operation.

[0019] Preferably, the communication module supports wired RJ45 / RS485 transmission protocols and wireless transmission protocols, and uses 4G, 5G or WiFi communication technology to transmit the detection data to an external terminal.

[0020] By adopting the above technical solutions, multiple protocols and wireless communication technologies are supported, enabling flexible wired / wireless transmission of detection data to adapt to different scenario requirements, ensuring data real-time performance and stability, and improving the efficiency of remote monitoring and intelligent operation and maintenance.

[0021] Preferably, the online oil detection module includes a laser particle counter for real-time detection of particle size and quantity in gear oil.

[0022] By adopting the above technical solution, the laser particle counter can realize the real-time detection of particle size and quantity in gear oil, accurately capture the changing trend of wear particles, provide early warning of abnormal equipment wear, avoid major failures, and significantly improve equipment reliability and maintenance efficiency.

[0023] Preferably, the main body of the gear oil filter is fixedly installed in any flat position inside the engine compartment and / or wheel hub.

[0024] By adopting the above technical solutions, the equipment can be flexibly installed in flat locations such as engine compartments or wheel hubs, adapting to confined spaces at high altitudes, reducing installation restrictions, and improving the flexibility of equipment layout and ease of operation.

[0025] Preferably, it also includes: a self-locking quick coupling for sealing the oil inlet and outlet pipes to the pitch gearbox; and an anti-overflow valve configured at the oil outlet to prevent abnormal oil pressure rise from causing pipeline leakage.

[0026] By adopting the above technical solutions, the self-locking quick coupling achieves efficient sealing connection of the pipeline, avoiding the risk of oil leakage during high-altitude operations; the anti-overflow valve monitors the oil pressure in real time to prevent pipeline rupture caused by abnormal high pressure, providing dual protection for system safety and ease of maintenance.

[0027] Secondly, this utility model also proposes a pitch gearbox for a wind turbine generator set, including the novel portable gear oil filter device described in the first aspect.

[0028] By adopting the above technical solutions, the pitch gearbox integrating a new portable filtration device can purify gear oil in real time, monitor oil quality, improve gearbox operational reliability, reduce maintenance costs, adapt to high-altitude working environments, and extend equipment service life.

[0029] Compared with the prior art, the beneficial results of this utility model are as follows:

[0030] This pitch gearbox oil filtration device is simple to operate and highly efficient in purifying pitch gearbox oil particles, enabling secondary recycling of the lubricating oil. It effectively removes impurities such as iron filings and alloys from the oil, preventing environmental pollution, reducing labor intensity, and extending the service life of the pitch gearbox. It can detect particulate impurities in the pitch gearbox oil to determine its condition, ensuring filtration effectiveness and providing a basis for developing a maintenance plan for the pitch gearbox oil. Attached Figure Description

[0031] The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments and, together with the description, serve to explain the principles of the present invention. Other embodiments and many anticipated advantages of the embodiments will be readily recognized as they become better understood through reference to the following detailed description. Elements in the drawings are not necessarily to scale. The same reference numerals refer to corresponding similar parts.

[0032] Figure 1 A schematic diagram of the overall structure of a novel portable gear oil filter device according to an embodiment of the present invention is shown.

[0033] The meaning of each number in the diagram:

[0034] 1. Main body of gear oil filtration device; 1-1. Oil pump module; 1-2. Filtration module; 1-3. Online oil detection module; 1-4. Communication module; 1-5. Oil inlet of pitch gear oil filtration device; 1-6. Oil outlet of gear oil filtration device;

[0035] 2. Pitch gearbox; 2-1. Pitch gearbox oil outlet; 2-2. Pitch gearbox oil inlet;

[0036] 3-1. Oil inlet pipe; 3-2. Oil outlet pipe. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0038] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0039] Firstly, this utility model proposes a novel portable gear oil filtration device. Figure 1 A schematic diagram of the overall structure of a novel portable gear oil filter device according to an embodiment of the present invention is shown, as follows: Figure 1 As shown, the novel portable gear oil filtration device includes: a gear oil filtration device body 1, which includes an oil pump module 1-1, a filter module 1-2, an online oil detection module 1-3, and a communication module 1-4; it also includes: an oil inlet pipe 3-1 connecting the gear oil filtration device body 1 to the oil outlet of the pitch gearbox 2; and an oil outlet pipe 3-2 connecting the gear oil filtration device body 1 to the oil inlet of the pitch gearbox 2.

[0040] The device comprises several components: an oil pump module 1-1 drives gear oil to circulate between the pitch gearbox 2 and the gear oil filter body 1; a filter module 1-2 includes at least one filter unit for filtering impurities from the gear oil; an online oil quality monitoring module 1-3 detects the particulate matter state of the gear oil in the inlet pipe 3-1 and outlet pipe 3-2 and generates data; and a communication module 1-4 transmits the particulate matter state data detected by the online oil quality monitoring module 1-3 to an external terminal. This device enables real-time monitoring of gear oil particulate matter, efficient impurity filtration, a portable and simple structure, remote data transmission, and intelligent early warning, thereby improving the service life and operational reliability of the pitch gearbox 2.

[0041] Preferably, the filter module 1-2 is equipped with multiple standardized mounting sections for installing filter units with different filtration accuracies. The dimensions of the standardized interfaces on the mounting sections perfectly match the interface dimensions of the filter units. This standardized interface mounting allows for a modular design of the filter units, enabling the combination of filter units with different accuracies as needed, improving filtration efficiency and flexibility, and facilitating maintenance and replacement. The perfectly matched standardized interface dimensions ensure quick and accurate installation of the filter units, eliminating the risk of leakage due to installation errors, improving sealing and system reliability, and reducing maintenance difficulty.

[0042] It should be noted that the specific structure and location of the installation section can be modified according to actual needs and applicability changes in the product design, and no specific restrictions are imposed here.

[0043] In this embodiment, the filtration unit includes at least a first filter element and a second filter element, wherein the filtration accuracy of the first filter element is lower than that of the second filter element. By setting filter elements with different filtration accuracies, multi-stage filtration is achieved. The first filter element intercepts large particulate impurities, while the second filter element finely filters out tiny particles, significantly improving filtration efficiency and extending the service life of the filter elements.

[0044] Preferably, the filtration accuracy of the first filter unit is 10-20 micrometers, and the filtration accuracy of the second filter unit is 5-10 micrometers.

[0045] The filtration module 1-2 also includes an impurity collection unit for collecting impurities intercepted during the filtration process.

[0046] Continue to refer to Figure 1 In one specific embodiment, the oil pump module 1-1 is configured to generate negative pressure at the oil inlet of the gear oil filter body 1 and positive pressure at the oil outlet of the gear oil filter body 1, thereby driving gear oil circulation. This negative pressure inlet and positive pressure outlet configuration of the oil pump creates a stable pressure difference to drive gear oil circulation, effectively preventing cavitation, improving filtration efficiency, and ensuring stable and reliable system operation.

[0047] Communication modules 1-4 support wired RJ45 / RS485 transmission protocols and wireless transmission protocols, employing 4G, 5G, or WiFi communication technologies to transmit detection data to external terminals. Supporting multiple protocols and wireless communication technologies enables flexible wired / wireless transmission of detection data, adapting to different scenario requirements, ensuring data real-time performance and stability, and improving the efficiency of remote monitoring and intelligent operation and maintenance.

[0048] The online oil detection modules 1-3 include a laser particle counter, used for real-time detection of particle size and quantity in gear oil. The laser particle counter enables real-time detection of particle size and quantity in gear oil, accurately capturing trends in wear particle changes, providing early warnings of abnormal equipment wear, avoiding major malfunctions, and significantly improving equipment reliability and maintenance efficiency.

[0049] Specifically, the laser particle counter is used to quantify the concentration of iron filings and alloy impurities in the oil. In a specific embodiment, the online oil detection module 1-3 can also be equipped with a dynamic threshold judgment unit, which triggers a filter replacement prompt when the particle concentration at the oil outlet does not reach the preset purification standard.

[0050] In a preferred embodiment, the main body 1 of the gear oil filter is fixedly installed in any flat position within the engine compartment and / or hub. It also includes: a self-locking quick connector for sealing the oil inlet pipe 3-1 and oil outlet pipe 3-2 to the pitch gearbox 2; and an anti-overflow valve located at the oil outlet to prevent abnormal oil pressure rise from causing pipeline leakage.

[0051] Self-locking quick couplings ensure efficient sealing of pipelines, avoiding the risk of oil leakage during high-altitude operations; anti-overflow valves monitor oil pressure in real time to prevent pipeline rupture caused by abnormal high pressure, providing dual protection for system safety and ease of maintenance. It can be flexibly installed in flat locations such as engine bays or wheel hubs, adapting to confined spaces at high altitudes, reducing installation restrictions, and improving equipment layout flexibility and operational convenience.

[0052] Specifically, the oil inlet pipe 3-1 and the oil outlet pipe 3-2 are each equipped with quick connectors for quick connection to the oil outlet and oil inlet of the pitch gearbox 2. The main body 1 of the gear oil filter device is equipped with casters and a handle for easy movement and installation inside the wind turbine nacelle.

[0053] Preferably, the oil pump module 1-1 is a variable frequency drive gear pump, whose speed is adjustable to adapt to gear oils of different viscosities and purification efficiency requirements.

[0054] The main body 1 of the gear oil filtration device also includes a control module, which is electrically connected to the oil pump module 1-1, the online oil detection module 1-3 and the communication module 1-4, and is used to control the working status of the oil pump module 1-1 according to the detection results of the online oil detection module 1-3.

[0055] It also includes a remote monitoring system, which is equipped with a data analysis unit to analyze the data transmitted by the online oil detection modules 1-3 and generate gear oil status reports and maintenance recommendations.

[0056] Secondly, this utility model also discloses a pitch gearbox for a wind turbine generator set, including the novel portable gear oil filter device of the first aspect. For example... Figure 1 As shown, the pitch gearbox 2, which integrates a new portable filtration device, can purify gear oil and monitor oil quality in real time, improve gearbox operation reliability, reduce maintenance costs, adapt to high-altitude working environments, and extend equipment service life.

[0057] The installation and operation of this novel portable gear oil filter device will be described in detail below through a specific embodiment. Figure 1 As shown.

[0058] 1. Preparation: When the wind speed is below 5m / s, lock the impeller to the leeward side of the wind turbine and drive the impeller to rotate slowly by external pneumatics or generator. When any blade in the impeller is vertically downward, lock the impeller and remove the limit switch to ensure that the hub is stationary.

[0059] 2. Installation: Fix the gear oil filter in a flat position inside the hub, connect the oil inlet pipe 3-1 to the oil outlet of the pitch gearbox 2 through the self-locking connector, and connect the oil outlet pipe 3-2 to the oil inlet; obtain the operating data of the gear oil filter through the laptop and communication module 1-4;

[0060] 3. Start-up cycle: First, turn on the pitch motor switch to make the pitch motor drive the pitch gearbox 2 to rotate, and the gear oil inside the pitch gearbox 2 will flow continuously. Turn on the oil pump module 1-1, and the oil inlet 1-5 of the pitch gear oil filter device will generate negative pressure, and the oil outlet 1-6 of the gear oil filter device will generate positive pressure. The gear oil flows from the pitch gearbox 2 through the oil outlet of the pitch gearbox 2 to the oil inlet pipe 3-1, and then through the oil inlet of the gear oil filter device into the gear oil filter device. It then flows through the oil pump module 1-1, the filter module 1-2, and then through the oil outlet 1-6 of the gear oil filter device into the oil outlet pipe 3-2, and then through the oil inlet of the pitch gearbox 2 back to the pitch gearbox 2.

[0061] 4. Real-time detection: When the oil pump module 1-1 is turned on, the online oil detection module 1-3 performs real-time detection on the gear oil flowing through the inlet 1-5 and outlet 1-6 of the pitch gear oil filter to obtain particulate impurity data of the gear oil, and transmits the data to the communication module 1-4; the communication module 1-4 is equipped with an RJ45 and / or RS232 / 485 serial port that can communicate with a host computer, and can upload data;

[0062] When the online detection module detects that the gear oil at the oil outlet 1-6 of the gear oil filter is unqualified, that is, the data at the oil outlet continues to exceed the standard, or when there is no significant improvement compared with the particulate impurity data at the oil inlet 1-5 of the pitch gear oil filter, an alarm is sent through the communication module 1-4 to prompt the replacement of the corresponding filter element in the filter module 1-2.

[0063] 5. Maintenance complete: Once the detection module detects that the particulate impurity data at the inlet 1-5 of the pitch gear oil filter meets the standard, stop the oil pump module 1-1, disconnect the oil inlet pipe 3-1 from the outlet 1-6 of the gear oil filter, and disconnect the oil outlet pipe 3-2 from the inlet 1-5 of the pitch gear oil filter, restoring the gearbox to its original state.

[0064] The same process is applied to the pitch gearbox 2 corresponding to the second and third blades, following the specific practical example described above.

[0065] The specific embodiments of this utility model have been described above, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

[0066] In the description of this utility model, it should be understood that the terms "upper," "lower," "inner," "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The simple fact that certain measures are recited in mutually different dependent claims does not indicate that combinations of these measures cannot be used for improvement. Any reference signs in the claims should not be construed as limiting the scope.

Claims

1. A new portable gear oil filtration device characterized in that, include: The main body of the gear oil filtration device includes an oil pump module, a filtration module, an online oil detection module, and a communication module. The oil inlet pipe connects the main body of the gear oil filter device to the oil outlet of the pitch gearbox; The oil outlet pipe connects the main body of the gear oil filter device to the oil inlet of the pitch gearbox; The oil pump module is used to drive the gear oil to circulate between the pitch gearbox and the main body of the gear oil filter device; the filter module includes at least one filter unit for filtering impurities in the gear oil; the online oil detection module is used to detect the particulate matter state of the gear oil in the inlet and outlet pipes and generate data; the communication module is used to transmit the particulate matter state data detected by the online oil detection module to an external terminal.

2. The new portable gear oil filtration device of claim 1, wherein, The filter module is provided with multiple standardized interface mounting parts, which are used to install filter units with different filtration precisions.

3. The new portable gear oil filtration device of claim 2, wherein, The dimensions of the standardized interface of the mounting section are perfectly matched with the interface dimensions of the filtering unit.

4. The new portable gear oil filtration device of claim 1, wherein, The filtration unit includes at least a first filter element and a second filter element, wherein the filtration accuracy of the first filter element is lower than that of the second filter element.

5. The novel portable gear oil filtration device according to claim 1, characterized in that, The oil pump module is configured to generate negative pressure at the oil inlet of the gear oil filter body and positive pressure at the oil outlet of the gear oil filter body to drive gear oil circulation.

6. The new portable gear oil filtration device of claim 1, wherein, The communication module supports wired RJ45 / RS485 transmission protocols and wireless transmission protocols, and uses 4G, 5G or WiFi communication technology to transmit detection data to an external terminal.

7. The new portable gear oil filtration device of claim 1, wherein, The online oil detection module includes a laser particle counter, which is used to detect the size and quantity of particles in gear oil in real time.

8. The new portable gear oil filtration device of claim 1, wherein, The main body of the gear oil filter device is fixedly installed in any flat position inside the engine compartment and / or wheel hub.

9. The new portable gear oil filtration device of claim 1, wherein, Also includes: Self-locking quick couplings are used for the sealed connection of the oil inlet and outlet pipes to the pitch gearbox. An anti-overflow valve is installed at the oil outlet to prevent abnormal increases in oil pressure from causing pipeline leakage.

10. A variable pitch gearbox of a wind turbine generator system, characterized by, The novel portable gear oil filter includes any one of claims 1-9.

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