Self-pollution-discharge filtering device for preventing impurities in lubricating pipeline from entering gear box
By introducing a self-emission filtering device into the wind power gearbox system, the problem of impurities residue in the old lubricating cooling system is solved, and automatic filtering and discharge of impurities is realized, reducing operational risks and maintenance costs.
Patent Information
- Application Number
- CN202422259639.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-09-14
AI Technical Summary
When replacing wind power gearboxes, if the lubricating cooling system cannot be replaced simultaneously, residual impurities in the old lubricating cooling system will enter the gearbox, resulting in clogging and damage, and it is difficult for the prior art to completely remove these impurities.
A self-emission filter device is designed to filter impurities in the old lubricating cooling system through a combination of a Y-shaped filter and a check valve, and automatically discharge impurities when the pressure rises to prevent them from entering the gearbox.
Effectively filter out uncleaned impurities in old lubricating cooling systems, reducing the operating risks and maintenance costs of gearboxes, and avoiding damage caused by irregular impurities entering gearboxes.
Smart Images
Figure CN223049363U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of wind power gearboxes, and specifically to a self-draining and filtering device for preventing impurities in the lubrication pipeline from entering the inside of the gearbox. Background Art
[0002] When a wind power gearbox is in operation, a continuous supply of clean lubricating oil is required to lubricate and cool the bearings, gears, etc. inside the gearbox to ensure the good and stable operation of the gearbox.
[0003] For some wind turbines, their wind power gearboxes and lubrication and cooling systems are supplied by different manufacturers respectively. When the gearbox is damaged and needs to be replaced, due to some reasons such as the delivery time, supply capacity or cost of the lubrication and cooling system, it is often not possible to replace it synchronously with the replacement of the gearbox. If the lubrication and cooling system cannot be replaced synchronously with the replacement of the gearbox, in order to resume the operation of the wind turbine and reduce the downtime, it is necessary to use its old lubrication and cooling system to connect to the newly replaced gearbox for use. Since the replaced gearbox is generally severely damaged and generates more iron filings and other impurities, it will damage the old lubrication and cooling system, and more iron filings and other impurities will enter the old lubrication and cooling system. Due to the structural characteristics of the lubrication and cooling system, such as narrow channels in some positions, these iron filings and other impurities are basically impossible to be cleaned out after entering the lubrication and cooling system, and will be washed out and enter the inside of the gearbox irregularly along with the flow of the lubricating oil, blocking the oil circuit inside the gearbox and damaging bearings, gears, etc.
[0004] Currently, when replacing a wind power gearbox, if the lubrication and cooling system cannot be replaced synchronously, it is necessary to clean the pipelines, filtering devices, oil pumps, etc. of the old lubrication and cooling system on site and replace the new filter element before use.
[0005] The disadvantages of the prior art are as follows:
[0006] 1) When cleaning the old lubrication and cooling system on site, due to reasons such as operating conditions and the working ability of the operators, it is extremely difficult to ensure that the cleaning can be carried out according to the requirements, and impurities will remain in the old lubrication and cooling system.
[0007] 2) Due to the structural characteristics of the lubrication and cooling system, there are many narrow channels inside it. If iron filings and other impurities enter it, it is basically impossible to completely clean the impurities by means of cleaning. Even if the flushing can be carried out according to the requirements on site, there will still be impurities remaining in the old lubrication and cooling system.
[0008] 3) The impurities remaining in the old lubrication and cooling system after its own filtering device will be washed out irregularly along with the flow of the lubricating oil and directly enter the inside of the gearbox during subsequent operation, causing damage to the operation of the gearbox. Content of the Utility Model
[0009] The utility model provides a self-draining filter device for preventing impurities in the lubrication pipeline from entering the inside of the gearbox, aiming to solve the shortcomings of the prior art, effectively filtering out the impurities that are not cleaned or cannot be cleaned in the old lubrication and cooling system, reducing the operation and maintenance costs, and reducing the risk of damage to the lubrication and cooling system and the gearbox.
[0010] The technical solution adopted by the utility model to solve its technical problems is as follows:
[0011] The self-draining filter device for preventing impurities in the lubrication pipeline from entering the inside of the gearbox is characterized in that:
[0012] The Y-type filter has an oil inlet, an oil outlet, a sewage outlet, and a filter element inside;
[0013] The oil sump of the gearbox is connected to the lubrication and cooling system by a pipeline;
[0014] The lubrication and cooling system is connected to the oil inlet of the Y-type filter by a pipeline;
[0015] The oil outlet of the Y-type filter is connected to the gearbox by a pipeline.
[0016] The sewage outlet of the Y-type filter is not provided with a plug;
[0017] The sewage outlet of the Y-type filter is connected to the oil inlet of the check valve by a pipeline;
[0018] The oil outlet of the check valve is connected to the oil sump of the gearbox by a pipeline;
[0019] The opening pressure value of the check valve is greater than the normal working pressure value allowed by the lubrication and cooling system and the gearbox, and less than the pressure value that causes the lubrication and cooling system to overflow or be damaged.
[0020] The beneficial effects of the utility model are as follows:
[0021] 1. The structure is simple, the assembly is convenient, the operation is easy, and the influence of the cleaning degree of the old lubrication and cooling system on the operation of the new gearbox is reduced;
[0022] 2. Filter the impurities that are not cleared or cannot be cleared in the old lubrication and cooling system, which is beneficial to the good and stable operation of the gearbox;
[0023] 3. After filtering to a certain extent, the filtered impurities are automatically discharged, which does not affect the oil supply situation and the operation of the lubrication system, does not require manual active shutdown for maintenance, has reliable operation, and reduces the operation and maintenance costs. It reduces the risk of damage to the lubrication and cooling system and the gearbox caused by untimely manual maintenance of discharging impurities. Description of the Drawings
[0024] The following further describes the utility model in conjunction with the drawings and embodiments.
[0025] Figure 1 This is a schematic structural diagram of the present utility model. Specific embodiments
[0026] In order to more clearly illustrate the technical solution of the present utility model, the following will briefly introduce the attached drawings required for the description. Obviously, the attached drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other embodiments can be obtained based on these drawings. For the convenience of understanding the present utility model, the present utility model will be described in more detail below in conjunction with the attached drawings and specific embodiments.
[0027] It should be noted that when an element is expressed as "fixed to" another element, it can be directly on the other element, or there can be one or more intermediate elements therebetween. When an element is expressed as "connected to" another element, it can be directly connected to the other element, or there can be one or more intermediate elements therebetween. The terms "upper", "lower", "inner", "outer", "bottom", etc. used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the attached drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0028] As Figure 1 shown:
[0029] The interior of the gearbox of the present utility model refers to the lubricating oil path inside the gearbox 6 and does not include the oil sump 100 of the gearbox 6.
[0030] The pipeline 1 connects the oil sump 100 of the gearbox 6 and the lubrication and cooling system 2.
[0031] The pipeline 3 connects the lubrication and cooling system 2 and the oil inlet 401 of the Y-type filter 4.
[0032] The pipeline 5 connects the oil outlet 402 of the Y-type filter 4 and the gearbox 6.
[0033] The pipeline 7 connects the drain port 403 of the Y-type filter 4 and the oil inlet 801 of the one-way valve 8.
[0034] The pipeline 9 connects the oil outlet 802 of the one-way valve 8 and the oil sump 100 of the gearbox 6.
[0035] During normal operation:
[0036] The lubrication and cooling system 2 sucks oil from the oil sump 100 of the gearbox 6 through the pipeline 1.
[0037] Lubrication and cooling system: It contains an oil pump, a filtering device, a cooling device, etc., and can provide a continuous supply of clean lubricating oil when the gearbox is running.
[0038] After the lubricating oil passes through the lubrication and cooling system 2, it passes through the pipeline 3 and enters the Y-type filter 4 from the oil inlet 401 of the Y-type filter 4.
[0039] The Y-type filter is a filtering device with an oil inlet 401, an oil outlet 402, a drain port 403, and a filter element inside.
[0040] After the lubricating oil is filtered by the Y-type filter 4, the impurities flushed out from the old lubrication system and pipelines are filtered by the Y-type filter 4. The lubricating oil flows out from the oil outlet 402 of the Y-type filter 4 and enters the gearbox 6 through the pipeline 5 to lubricate and cool the internal parts of the gearbox 6 (the pipeline connection is only for convenient illustration, and each component can also be connected through joints, etc.).
[0041] The opening pressure value P1 of the check valve 8 is greater than the normal working pressure value P2 allowed by the lubrication and cooling system and the gearbox, and less than the pressure value P3 that causes the lubrication and cooling system to overflow or be damaged. When a large amount of impurities are filtered by the Y-type filter 4, a blockage or clogging occurs inside the Y-type filter 4, and the pressure increases. When the pressure increases to be greater than the opening pressure P1 of the check valve 8, the check valve 8 opens, and the high-pressure lubricating oil together with the filtered impurities flows out from the drain port 403 of the Y-type filter 4, enters the oil inlet 801 of the check valve 8 through the pipeline 7, flows out from the oil outlet 802 of the check valve 8, and then enters the oil sump 100 of the gearbox 6 through the pipeline 9. After the impurities filtered by the Y-type filter 4 are brought into the oil sump 100 of the gearbox 6 by the high-pressure lubricating oil, the impurities inside the Y-type filter 4 are removed and the pressure decreases. When the pressure decreases to be lower than the opening pressure P1 of the check valve 8, the check valve 8 closes, and the lubricating oil no longer flows out from the drain port 403 of the Y-type filter 4, but only flows out from its oil outlet 402, and returns to normal operation.
[0042] The check valve 8 can also not be used, and the drain port 403 is blocked by a plug. After the plug of the drain port 403 is removed regularly, the filtered impurities can be removed or the filter element can be replaced.
[0043] The present utility model:
[0044] If the old lubrication and cooling system needs to be used after replacing a new gearbox, through the added Y-type filter device, the iron filings and other impurities that are not cleaned up in the old lubrication and cooling system and are behind the filter device of the lubrication and cooling system itself can be filtered out, preventing the impurities from entering the gearbox and blocking the internal oil circuit of the gearbox, damaging bearings, gears, etc.
[0045] 2. Since the impurities that were not cleaned thoroughly in the old lubrication and cooling system are flushed out irregularly, the added filtering device can automatically discharge the impurities after filtering a large amount of them, preventing damage to the lubrication system or affecting the supply of lubricating oil due to blockage caused by a large amount of filtered impurities.
[0046] The present utility model only needs to add a Y-shaped filter, a check valve and corresponding pipelines or connection joints between the original lubrication system and the gearbox, which can effectively filter out the impurities that were not cleaned thoroughly or could not be cleaned thoroughly in the old lubrication and cooling system, enabling the gearbox to operate well. For the impurities that are flushed out by the lubricating oil irregularly, the filtered impurities can be automatically discharged according to the impurity filtering situation, without the need for manual active shutdown maintenance, reducing the operation and maintenance costs. It reduces the risk of damage to the lubrication and cooling system and the gearbox caused by untimely manual maintenance of discharging impurities.
[0047] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other. The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A self-draining filter device that prevents impurities in the lubrication pipeline from entering the gear box, characterized by: The Y-type filter has an oil inlet, an oil outlet, a sewage outlet, and a filter element inside; the oil pool of the gearbox is connected to the lubrication and cooling system with a pipeline; the lubrication and cooling system is connected to the oil inlet of the Y-type filter with a pipeline; the oil outlet of the Y-type filter is connected to the gearbox with a pipeline.
2. The self-draining filter device for preventing impurities in the lubrication pipeline from entering the gear box according to claim 1, characterized in that: The drain outlet of the Y-type filter is not equipped with a plug; the drain outlet of the Y-type filter is connected to the oil inlet of the one-way valve by a pipeline; the oil outlet of the one-way valve is connected to the oil tank of the gearbox by a pipeline; the opening pressure value of the one-way valve is greater than the normal working pressure value allowed by the lubrication and cooling system and the gearbox, and is less than the pressure value that will cause overflow or damage to the lubrication and cooling system.