A leakage-proof structure of a wind turbine gearbox filter

Abstract

The utility model relates to gear box filter technical field, and disclose a kind of anti-seep structure of wind generator gear box filter, including gear box breather pipe and the air filter being set in the upper of gear box breather pipe, further including the conversion seat being set between gear box breather pipe and air filter;Sealing groove is opened in the top of gear box breather pipe, the inside of sealing groove is placed with the sealing washer compatible with the inner diameter of sealing groove, the utility model is connected with air filter and gear box breather pipe by conversion seat, and washer is placed in annular groove on the air pipe in conversion seat, can improve sealing property, and fixed baffle in the inner wall of air pipe can prevent oil leakage, simultaneously, sealing washer is placed into the sealing groove in the top of gear box breather pipe, when conversion seat is screwed into gear box breather pipe, sealing washer will be extruded, make sealing between conversion seat and gear box breather pipe, and leakage phenomenon will not appear.

Description

Technical Field

[0001] This utility model relates to the field of gearbox filter technology, specifically to a leak-proof structure for a wind turbine gearbox filter. Background Technology

[0002] In wind turbine gearbox systems, the gearbox vent pipe is connected to the air filter and is primarily used to balance the internal pressure of the gearbox, expel gases generated by thermal expansion and contraction, and prevent external contaminants from entering. The gearbox vent pipe compensates for the expansion or contraction of the oil volume caused by temperature changes (such as start-up, shutdown, and ambient temperature differences), preventing the formation of negative or positive pressure inside the gearbox; it also prevents dust and moisture from entering the gearbox through the air filter (dryer or filter element), protecting the cleanliness of the lubricating oil; and it expels trace amounts of gases (such as oil vapor and air) generated during gearbox operation. The gearbox vent pipe is typically located at the top (highest point) of the gearbox to ensure free exhaust of gases.

[0003] When the existing gearbox vent pipe and air filter are assembled using connectors, the connectors lack an effective sealing structure, which may lead to leakage after assembly. When poor sealing between the wind turbine gearbox vent pipe and air filter causes leakage, the following problems may occur: 1. Leakage will cause slow loss of gearbox lubricating oil, lowering the oil level and potentially leading to insufficient lubrication, thus accelerating wear on gears and bearings; 2. Unfiltered air (containing dust, moisture, salt spray, etc.) will directly enter the gearbox through the leak point, contaminating the lubricating oil, causing oil emulsification, corrosion of metal parts, and accelerated filter element clogging. Utility Model Content

[0004] The purpose of this invention is to provide a leak-proof structure for a wind turbine gearbox filter to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a leak-proof structure for a wind turbine gearbox filter, comprising a gearbox vent pipe and an air filter disposed above the gearbox vent pipe, wherein the inner wall of the gearbox vent pipe has a through hole, and further comprising:

[0006] A conversion seat is provided between the gearbox vent pipe and the air filter for connection;

[0007] A sealing groove is formed at the top of the gearbox vent pipe, and a sealing gasket that matches the inner diameter of the sealing groove is placed inside the sealing groove.

[0008] Preferably, the conversion seat includes a top seat, and an adjusting nut configured as hexagon is fixed to the outer side of the top seat.

[0009] Preferably, the bottom of the top seat is fixed with a base, both the base and the top seat are cylindrical, and the base is threaded to the inner wall of the through hole.

[0010] Preferably, an air supply pipe is fixed to the inner wall of the base, and the bottom end of the air supply pipe is connected to an air distribution pipe. The inner wall of the air distribution pipe is provided with several holes, and the air distribution pipe is inserted into the through hole.

[0011] Preferably, an annular groove for placing a gasket is provided at the bottom outer side of the vent pipe.

[0012] Preferably, the inner wall of the vent pipe is fixed with an oil baffle to prevent oil leakage.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention allows for the assembly and connection of an air filter and a gearbox vent pipe via a conversion seat. A gasket is placed in the annular groove on the vent pipe within the conversion seat to improve sealing during assembly. An oil baffle plate fixed to the inner wall of the vent pipe prevents oil leakage from the gearbox. Before assembling the conversion seat and gearbox vent pipe, a sealing gasket is placed in the sealing groove at the top of the gearbox vent pipe. When the conversion seat is screwed into the gearbox vent pipe, it compresses the sealing gasket, sealing the connection between the conversion seat and the gearbox vent pipe and preventing leakage. Attached Figure Description

[0015] Figure 1 A schematic diagram of a preferred embodiment of the anti-leakage structure of the wind turbine gearbox filter provided by this utility model;

[0016] Figure 2 A schematic diagram of the connection between the air filter and the gearbox vent pipe provided by this utility model;

[0017] Figure 3 A schematic diagram of the structure of the sealing groove and sealing gasket provided by this utility model;

[0018] Figure 4 A schematic diagram of the structure of the conversion seat provided by this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the air vent provided by this utility model.

[0020] In the diagram: 1. Gearbox vent pipe; 2. Air filter; 3. Converter seat; 31. Top seat; 32. Adjusting nut; 33. Base; 34. Air supply pipe; 35. Air distribution pipe; 36. Annular groove; 37. Oil baffle; 4. Sealing groove; 5. Sealing gasket; 6. Through hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5 As shown, a leak-proof structure for a wind turbine gearbox filter includes a gearbox vent pipe 1 and an air filter 2 disposed above the gearbox vent pipe 1. The inner wall of the gearbox vent pipe 1 has a through hole 6.

[0023] In a wind turbine gearbox system, the gearbox vent pipe 1 is connected to the air filter 2. Its main functions are to balance the internal pressure of the gearbox, expel gases generated by thermal expansion and contraction, and prevent external contaminants from entering. The gearbox vent pipe 1 compensates for the expansion or contraction of the oil volume caused by temperature changes (such as start-up, shutdown, and ambient temperature differences), preventing the formation of negative or positive pressure inside the gearbox. The air filter 2 (with desiccant or filter element) prevents dust and moisture from entering the gearbox, protecting the lubricating oil. It also expels trace amounts of gas (such as oil vapor and air) generated during gearbox operation. The gearbox vent pipe 1 is typically located at the top (highest point) of the gearbox to ensure free gas discharge.

[0024] A conversion seat 3 is installed between the gearbox vent pipe 1 and the air filter 2 for connection. The conversion seat 3 includes a top seat 31, and an adjusting nut 32 in the shape of a hexagon is fixed to the outside of the top seat 31. A base 33 is fixed to the bottom of the top seat 31. Both the base 33 and the top seat 31 are cylindrical. The base 33 is threaded to the inner wall of the through hole 6. An air supply pipe 34 is fixed to the inner wall of the base 33. The bottom end of the air supply pipe 34 is connected to a diffuser pipe 35. The inner wall of the diffuser pipe 35 has several holes. The diffuser pipe 35 is inserted into the through hole 6. An annular groove 36 for placing a gasket is opened at the bottom outer side of the diffuser pipe 35. An oil baffle 37 for preventing oil leakage is fixed to the inner wall of the diffuser pipe 35.

[0025] The air filter 2 and the gearbox vent pipe 1 can be assembled and connected by the conversion seat 3. During assembly, first place a washer in the annular groove 36 on the air diffuser 35, put the air diffuser 35 into the gearbox vent pipe 1, and rotate the adjusting nut 32 to drive the top seat 31 to rotate. Since the base 33 is fixed at the bottom of the top seat 31, the base 33 rotates synchronously when the top seat 31 rotates. Since the base 33 is threaded to the inner wall of the through hole 6 of the gearbox vent pipe 1, after the base 33 is screwed into the through hole 6, it is fixed to the gearbox vent pipe 1. Finally, insert the air inlet at the bottom of the air filter 2 into the top seat 31 to connect the air filter 2 and the conversion seat 3. Fixing the oil baffle 37 on the inner wall of the air diffuser 35 can prevent oil leakage from the gearbox.

[0026] A sealing groove 4 is formed at the top of the gearbox vent pipe 1, and a sealing gasket 5 that matches the inner diameter of the sealing groove 4 is placed inside the sealing groove 4.

[0027] Before assembling the converter seat 3 with the gearbox vent pipe 1, first place the sealing gasket 5 into the sealing groove 4 at the top of the gearbox vent pipe 1. When the converter seat 3 is screwed into the gearbox vent pipe 1, it will squeeze the sealing gasket 5, so that the converter seat 3 and the gearbox vent pipe 1 are sealed and there will be no leakage.

[0028] Working principle: First, before assembling the converter seat 3 with the gearbox vent pipe 1, the sealing gasket 5 is placed in the sealing groove 4 at the top of the gearbox vent pipe 1. When the converter seat 3 is screwed into the gearbox vent pipe 1, it will squeeze the sealing gasket 5, sealing the converter seat 3 with the gearbox vent pipe 1 and preventing leakage. Then, the air inlet at the bottom of the air filter 2 is inserted into the converter seat 3 to connect the air filter 2 with the converter seat 3. When assembling and connecting the converter seat 3 with the gearbox vent pipe 1, the gasket is first placed in the annular groove 36 on the diffuser pipe 35, and the diffuser pipe 35 is placed into the gearbox vent pipe 1. The top seat 31 is rotated by rotating the adjusting nut 32. Since the base 33 is fixed at the bottom of the top seat 31, the base 33 rotates synchronously when the top seat 31 rotates. Since the base 33 is threaded to the inner wall of the through hole 6 of the gearbox vent pipe 1, the base 33 is fixed to the gearbox vent pipe 1 after being screwed into the through hole 6.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A leak-proof structure for a wind turbine gearbox filter, comprising a gearbox vent pipe (1) and an air filter (2) disposed above the gearbox vent pipe (1), wherein the inner wall of the gearbox vent pipe (1) is provided with a through hole (6), characterized in that, Also includes: A conversion seat (3) is provided between the gearbox vent pipe (1) and the air filter (2) for connection. A sealing groove (4) is provided at the top of the gearbox vent pipe (1), and a sealing gasket (5) that matches the inner diameter of the sealing groove (4) is placed inside the sealing groove (4).

2. The anti-leakage structure of a wind turbine gearbox filter according to claim 1, characterized in that: The conversion seat (3) includes a top seat (31), and an adjusting nut (32) configured as a hexagon is fixed on the outer side of the top seat (31).

3. The anti-leakage structure of a wind turbine gearbox filter according to claim 2, characterized in that: The bottom of the top seat (31) is fixed with a base (33). Both the base (33) and the top seat (31) are cylindrical. The base (33) is threaded to the inner wall of the through hole (6).

4. The anti-leakage structure of a wind turbine gearbox filter according to claim 3, characterized in that: The inner wall of the base (33) is fixed with an air supply pipe (34), the bottom end of the air supply pipe (34) is connected to an air distribution pipe (35), the inner wall of the air distribution pipe (35) is provided with several holes, and the air distribution pipe (35) is inserted into the through hole (6).

5. The anti-leakage structure of a wind turbine gearbox filter according to claim 4, characterized in that: An annular groove (36) for placing a gasket is provided at the bottom outer side of the vent pipe (35).

6. The anti-leakage structure of a wind turbine gearbox filter according to claim 4, characterized in that: The inner wall of the vent pipe (35) is fixed with an oil baffle (37) to prevent oil leakage.

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