Oil way switching device of fan gear box

Abstract

An oil way switching device of a fan gear box is arranged to be of a hexahedron structure, the hexahedron structure is provided with a first butt joint face, the first butt joint face is communicated with an oil inlet of a filter through a first oil pipe, a right-angle face close to the first butt joint face is a third butt joint face, and the third butt joint face is communicated with an oil outlet of an oil pump through a second oil pipe. The first butt joint face communicates with the third butt joint face through a right-angle bend, a slope is arranged at the right-angle position of the right-angle bend, and a force unloading effect is generated on oil of an oil outlet of the oil pump. The oil pipe is ingenious in conception, through the right-angle bend design and slope unloading, impact force borne by the oil pipe is reduced, vibration of the oil pipe is reduced, and the stability of a gearbox filtering system is improved; the switching device is further provided with an exhaust hole used for exhausting gas in the gearbox. In an oil way system of the gearbox of the wind generating set, the switching device avoids bending of the oil pipe, reduces deformation and abrasion, improves operation reliability and power generation efficiency of the system, reduces maintenance cost, and is good in practical application effect and high in popularization value.

Description

Technical Field

[0001] The utility model relates to the technical field of oil circuit systems of fan gear boxes, in particular to an oil circuit adapter device of a fan gear box. Background Art

[0002] Nowadays, offshore wind power is booming. As power generation equipment, wind turbines play an important role in wind power projects. In wind turbines, the gearbox is the core component of the drive chain, and its stable operation is crucial to the power generation efficiency of the entire wind power project. The lubricating oil filtration system of the traditional gearbox adopts a combination of filter and oil pump, but due to the limited space in the cabin, such as Figure 1 As shown, the oil pump outlet and the filter inlet are connected by a third oil pipe 15. Since the oil pump outlet and the filter inlet are on the same side, facing the gearbox, the arc-shaped third oil pipe 15 needs to be bent twice before it can be connected, which will cause the third oil pipe 15 to be subjected to a large impact force during operation, reducing its service life. After long-term operation, the third oil pipe 15 is also prone to deformation and sticking to the filter, causing wear and rupture, which in turn causes faults such as low oil level or abnormal pressure in the gearbox, causing the fan to shut down, resulting in power and economic losses.

[0003] For example, CN216112085U discloses an oil pipe adapter and a gearbox, wherein the oil pipe adapter is used for oil pipe conversion of the gearbox, comprising: an oil circuit conversion module, the oil circuit conversion module runs through the gearbox, a part of the oil circuit conversion module is arranged inside the gearbox, and the other part of the oil circuit conversion module is arranged outside the gearbox; the adapter can realize the conversion, distribution and transportation of multiple oil circuits, but the scheme has a large workload for the modification of the gearbox, the recognition of each interface of the adapter is low, and it is easy to connect incorrectly and bring new problems. After the built-in, the number of failure points increases and it is inconvenient to repair, and the modification process has a long downtime, which has a great impact on the normal operation of the wind turbine. It is also very easy to damage the gearbox during the modification process, thereby affecting the normal operation of the gearbox, and this method is not suitable for small or compact gearboxes. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide an oil circuit adapter for a wind turbine gearbox, which solves the problems that the oil pipe between the oil pump outlet and the filter inlet of the wind turbine gearbox is bent many times, resulting in a large impact force on the bending part, frequent collision and rupture after being tightly attached to the filter after bending, and a short service life, and the problems that the adapter in the prior art has a large workload for modification, a high failure rate, and is inconvenient for maintenance.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: an oil circuit adapter device of a fan gearbox, which is arranged as a hexagonal structure, and the hexagonal structure is provided with a first docking surface, and the first docking surface is connected with the oil inlet of the filter through a first oil pipe. The right-angle surface adjacent to the first docking surface is the third docking surface, and the third docking surface is connected with the oil outlet of the oil pump through a second oil pipe. The first docking surface and the third docking surface are connected through a right-angle bend, and a slope is provided at the right angle of the right-angle bend, which produces a force unloading effect on the oil at the oil outlet of the oil pump.

[0006] In a preferred embodiment, the surface opposite to the first docking surface is the second docking surface, and the other two surfaces of the hexagon are the fifth docking surface and the sixth docking surface, respectively. The fifth docking surface is the top surface of the hexagon, and the sixth docking surface is the bottom surface of the hexagon. The second docking surface, the fifth docking surface and the sixth docking surface are spare docking surfaces.

[0007] In a preferred solution, the first docking surface is provided with a group of threaded holes, the threaded holes are blind holes, and the first oil pipe is installed and fixed to the first docking surface by bolts.

[0008] In a preferred solution, the plane opposite to the third docking surface is a fourth docking surface, and an exhaust hole is provided on the fourth docking surface, and the exhaust hole is connected to the right-angle bend inside the hexagonal body.

[0009] In a preferred solution, a sealing ring groove is provided on the fourth docking surface at the exhaust hole position, and a sealing screw plug is installed.

[0010] In a preferred solution, the third docking surface is provided with a group of bolt holes, which are through holes that pass from the third docking surface to the fourth docking surface. Bolts are installed in the bolt holes to fix the oil circuit adapter on the oil pump.

[0011] The utility model provides an oil circuit adapter for a fan gear box, which has the following beneficial effects:

[0012] 1. The utility model solves the problem that the oil pipe between the oil pump outlet of the gear box of the wind turbine and the oil inlet of the filter is bent many times, resulting in a large impact force on the bend, frequent collisions and ruptures after being bent and close to the filter, and a short service life, and the problem that the adapter of the prior art has a large workload for transformation, a high failure rate, and is inconvenient for maintenance;

[0013] 2. The six transfer surfaces of the hexagonal transfer device of the utility model provide direct docking positions for oil pipes in all directions, avoiding multiple bending of the oil pipes, reducing the impact force on the oil pipes, reducing the vibration of the oil pipe attachment equipment, and improving the stability of the gearbox filtering system;

[0014] 3. The setting of the external adapter of the utility model reduces the workload of the gearbox modification, and does not affect the normal operation of the gearbox during the modification. The external adapter does not affect the normal operation of the gearbox, thereby reducing the risk of failure of the gearbox and facilitating repair and maintenance;

[0015] 4. The setting of the exhaust hole of the utility model provides the possibility for the gear box to exhaust the air regularly or irregularly, and timely discharges the air and moisture generated inside the gear box, preventing the accumulation of excessive air and moisture inside the gear box from causing the reducer to fail, and also helps to remove the heat generated during the operation of the gear box and maintain the normal operation of the reducer;

[0016] 5. The sealing ring groove and the sealing screw plug of the utility model enable the exhaust hole to be sealed with the sealing screw plug at ordinary times, thus preventing the external dirt from entering the gear box and ensuring the cleanliness of the internal working environment of the gear box. When exhaust is needed, the sealing screw plug is temporarily opened to exhaust the gas in the gear box, thus ensuring the normal operation of the gear box;

[0017] 6. A slope is provided at the right angle of the right-angle bend of the utility model, which produces a force-relieving effect on the oil at the oil pump outlet, reducing the impact on the oil pump, thereby further improving the safety and stability of the system;

[0018] 7. The utility model is made of stainless steel to prevent rust from entering the oil circuit, polluting the oil circuit and clogging the pipeline. At the same time, the use of stainless steel enhances its stability and durability, thereby further improving the overall life of the system;

[0019] 8. In practical application, the utility model can select appropriate specifications and quantities of the oil circuit adapter device according to the needs to adapt to the oil circuit system of the gearbox of wind turbine generator sets of different sizes. During installation, it is only necessary to connect the oil outlet interface of the oil circuit adapter device to the oil outlet of the oil pump, connect the oil inlet interface to the oil inlet of the filter, and then fix the oil pipe and the oil circuit adapter device. It is convenient and fast, with high interface recognition and error-free installation, thereby further improving the reliability and safety of the device;

[0020] 9. The utility model has an ingenious conception, sophisticated design, and simple structure. It fundamentally solves the problem and can be completed without major modifications or shutdowns. It is also very convenient to install, disassemble, and repair. It has received good feedback after being put into use online, and has been promoted in this field. It has high practical application value and has good economic and social benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described below in conjunction with the accompanying drawings and implementation examples:

[0022] Figure 1 It is a partial schematic diagram of the gearbox oil circuit system of a conventional wind turbine generator set;

[0023] Figure 2 This is a partial schematic diagram of the oil circuit system of the gearbox of the fan generator set of the utility model;

[0024] Figure 3 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 4 It is a partial cross-sectional view of the first docking surface of the utility model;

[0026] Figure 5 It is a partial cross-sectional view of the third docking surface of the utility model;

[0027] Figure 6 It is a front view of the fourth docking surface of the utility model;

[0028] In the figure: a first docking surface 1, a second docking surface 2, a third docking surface 3, a fourth docking surface 4, a fifth docking surface 5, a sixth docking surface 6, a right-angle bend 7, a threaded hole 8, an exhaust hole 9, a sealing ring groove 10, a bolt hole 11, a filter 12, an oil pump 13, a first oil pipe 14, a third oil pipe 15, and a slope 16. DETAILED DESCRIPTION

[0029] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0030] like Figures 1 to 6 As shown, an oil circuit adapter device of a fan gearbox is arranged as a hexagonal structure, the hexagonal structure is provided with a first docking surface 1, the first docking surface 1 is connected with the oil inlet of the filter 12 through a first oil pipe 14, the right-angle surface next to the first docking surface 1 is a third docking surface 3, the third docking surface 3 is connected with the oil outlet of the oil pump 13 through a second oil pipe, the first docking surface 1 and the third docking surface 3 are connected through a right-angle bend 7, and a slope 16 is arranged at the right angle of the right-angle bend 7 to produce a force unloading effect on the oil at the oil outlet of the oil pump 13.

[0031] In this embodiment, the surface opposite to the first docking surface 1 is the second docking surface 2, and the other two surfaces of the hexagon are the fifth docking surface 5 and the sixth docking surface 6, respectively. The fifth docking surface 5 is the top surface of the hexagonal body, and the sixth docking surface 6 is the bottom surface of the hexagonal body. The second docking surface 2, the fifth docking surface 5 and the sixth docking surface 6 are spare docking surfaces.

[0032] Furthermore, the first docking surface 1 is provided with a group of threaded holes 8 , the threaded holes 8 are blind holes, and the first oil pipe 14 is installed and fixed to the first docking surface 1 by bolts.

[0033] Furthermore, the plane opposite to the third docking surface 3 is a fourth docking surface 4, and the fourth docking surface 4 is provided with an exhaust hole 9, which is connected to the right-angle bend 7 inside the hexagonal body.

[0034] Furthermore, a sealing ring groove 10 is provided on the fourth docking surface 4 at the exhaust hole 9, and a sealing screw plug is installed.

[0035] Furthermore, the third docking surface 3 is provided with a group of bolt holes 11 , which are through holes that pass from the third docking surface 3 to the fourth docking surface 4 , and bolts are installed in the bolt holes 11 to fix the oil circuit adapter to the oil pump 13 .

[0036] During specific use, after the oil circuit adapter of a wind turbine gearbox has been processed and accepted, the wind turbine gearbox is turned off, the third oil pipe 15 is removed, and a group of threaded blind holes are drilled on the oil pump 13 around the oil outlet of the oil pump 13, with the bolt holes 11 on the processed oil circuit adapter as a reference. Pay attention to controlling the depth so that it cannot be connected to the inside of the gearbox. The bolts can be used to install and fix the oil circuit adapter.

[0037] Then, the oil circuit adapter is fixed together with the oil pump 13 by bolts, one end of the first oil pipe 14 is connected to the oil inlet of the filter 12 and ensured to be sealed, one end of the second oil pipe is connected to the oil outlet of the oil pump 13 and ensured to be sealed, and then the other end of the first oil pipe 14 is fixed together with the first docking surface 1 of the oil circuit adapter by bolts, and it is ensured that the first oil pipe 14 is connected to the oil circuit adapter and is sealed, the other end of the second oil pipe 1 is screwed on the third docking surface 3 of the oil circuit adapter, and it is ensured that the second oil pipe 1 is connected to the oil circuit adapter and is sealed, after the oil inlet of the filter 12, the first oil pipe 14, the oil circuit adapter, the second oil pipe and the oil outlet of the oil pump 13 are connected, the exhaust hole 9 is exhausted, and after the exhaust is completed, the exhaust port is tightened with a sealing screw plug;

[0038] When the gearbox is turned on and starts working, the oil in the oil pump 13 enters the oil circuit adapter through the oil outlet and the second oil pipe, unloads through the slope 16 at the right angle of the right-angle bend 7 inside the adapter, enters the first oil pipe 14, and enters the filter 12 through the first oil pipe 14 for filtering.

[0039] After running for a period of time, open the sealing screw plug at the exhaust hole 9 to discharge the gas, moisture and heat inside the gear box, thereby further improving the stability and reliability of the system operation.

[0040] Example 2

[0041] In another preferred embodiment, on the basis of the above-mentioned embodiment 1, the oil circuit adapter and the oil pump 13 can be installed and fixed by adding a transition mounting plate, and bolt mounting holes are set on the transition plate. The transition mounting plate is first fixed to the gear box by welding, and then the transition plate and the oil circuit adapter are fixed by bolts. The oil circuit adapter can be installed and fixed on the oil pump 13; the remaining installation methods and methods of use are the same as those in embodiment 1.

[0042] In the preferred scheme, the surface opposite to the first docking surface 1 is the second docking surface 2, and the other two surfaces of the hexagon are the fifth docking surface 5 and the sixth docking surface 6 respectively. The fifth docking surface 5 is the top surface of the hexagonal body, and the sixth docking surface 6 is the bottom surface of the hexagonal body. The second docking surface 2, the fifth docking surface 5 and the sixth docking surface 6 are spare docking surfaces. The above arrangement makes full use of the six-sided structure of the oil circuit adapter and is easy to manufacture.

[0043] In a preferred embodiment, the first docking surface 1 is provided with a group of first threaded holes 8, the first threaded holes 8 are blind holes, and the first oil pipe 14 is installed and fixed to the first docking surface 1 by bolts; the above arrangement enables the oil circuit adapter to be connected with the filter 12, and facilitates the installation, disassembly and replacement of the first oil pipe 14.

[0044] In the preferred scheme, the plane opposite to the third docking surface 3 is the fourth docking surface 4, and the fourth docking surface 4 is provided with an exhaust hole 9, which is connected to the right-angle bend 7 inside the hexagonal body; the above setting enables the exhaust function of the exhaust hole 9 to be realized, so that the function of the oil circuit adapter device can be further improved.

[0045] In the preferred solution, a sealing ring groove 10 is provided on the fourth docking surface 4 at the exhaust hole 9, and a sealing screw plug is installed; the above arrangement enables the exhaust hole 9 to be sealed after the exhaust function is completed, thereby further ensuring the cleanliness of the oil circuit, thereby further improving the stability and reliability of the system.

[0046] In the preferred scheme, the third docking surface 3 is provided with a group of second threaded holes 11, and the second threaded holes 11 are through holes, which pass from the third docking surface 3 to the fourth docking surface 4. Bolts are installed in the bolt holes 11 to fix the oil circuit adapter to the oil pump 13; the above arrangement enables the oil circuit adapter to be fixed to the oil pump, effectively avoiding the swing and vibration of the oil pipes, reducing the bending of the oil pipes, and also shortening the connection length of the oil pipes, thereby enhancing the stability and reliability of the system, while ensuring the appearance and facilitating installation, disassembly and maintenance.

[0047] In summary, the oil circuit adapter device of the wind turbine gearbox proposed in the present invention solves the problems that the oil pipe between the oil pump outlet and the oil inlet of the wind turbine gearbox is bent many times, resulting in large impact force on the bending part, frequent collision and rupture after being tightly attached to the filter after being bent, and short service life, and the adapter in the prior art has large modification workload, high failure rate, and inconvenient maintenance; by setting the six adapter surfaces of the hexagonal adapter device, direct docking positions are provided for the oil pipes in all directions, avoiding multiple bending of the oil pipe, reducing the impact force on the oil pipe, reducing the vibration of the oil pipe attached to the equipment, and improving the stability of the gearbox filtering system; by setting the external adapter , reducing the workload of gearbox modification, and the normal operation of the gearbox is not affected during the modification. The external adapter does not affect the normal operation of the gearbox, thereby reducing the risk of failure of the gearbox and facilitating repair and maintenance; the setting of the exhaust hole provides the possibility of regular and irregular exhaust of the gearbox, timely discharges the air and moisture generated inside the gearbox, prevents excessive accumulation of air and moisture inside the gearbox and causes reducer failure, and also helps to remove the heat generated during the operation of the gearbox and maintain the normal operation of the reducer; through the setting of the sealing ring groove and the sealing screw plug, the exhaust hole can be sealed with the sealing screw plug at ordinary times to prevent external dirt from entering the gearbox , ensuring the cleanliness of the internal working environment of the gear box. When exhaust is needed, the sealing screw plug is temporarily opened to exhaust the gas in the gear box to ensure the normal operation of the gear box; a slope 16 is arranged at the right angle of the right-angle bend to produce a force-unloading effect on the oil at the oil pump outlet, reducing the impact on the oil pump, thereby further improving the safety and stability of the system; the setting of stainless steel materials can prevent rust from entering the oil circuit, polluting the oil circuit, and clogging the pipeline. At the same time, the use of stainless steel enhances its stability and durability, thereby further improving the overall life of the system; in actual application, the utility model can select appropriate specifications and quantities of the oil circuit adapter according to needs to adapt to When installing the oil circuit system of the gearbox of wind turbines of different sizes, it is only necessary to connect the oil outlet docking surface of the oil circuit adapter device with the oil outlet of the oil pump, connect the oil inlet docking surface with the oil inlet of the filter, and then fix the oil pipe and the oil circuit adapter device. It is convenient and fast, with high interface recognition and error-free installation, thereby further improving the reliability and safety of the device. The utility model has ingenious conception, sophisticated design, simple structure, and fundamentally solves the problem. It can be completed without major transformation and shutdown, and is very convenient to install, disassemble and maintain. Good feedback has been given after online use, and it has been promoted in this field. It has a wide range of applications, high practical application value, and good economic and social benefits.

Claims

1. An oil circuit adapter for a fan gearbox, characterized in that: The hexagonal structure is provided with a first docking surface (1), the first docking surface (1) is connected to the oil inlet of the filter (12) through a first oil pipe (14), the right-angled surface next to the first docking surface (1) is a third docking surface (3), the third docking surface (3) is connected to the oil outlet of the oil pump (13) through a second oil pipe, the first docking surface (1) and the third docking surface (3) are connected through a right-angled bend (7), and a slope (16) is provided at the right angle of the right-angled bend (7) to produce a force-relieving effect on the oil at the oil outlet of the oil pump (13).

2. The oil circuit adapter of a fan gearbox according to claim 1, characterized in that: The surface opposite to the first docking surface (1) is the second docking surface (2), and the other two surfaces of the hexagonal body are respectively the fifth docking surface (5) and the sixth docking surface (6), the fifth docking surface (5) being the top surface of the hexagonal body, and the sixth docking surface (6) being the bottom surface of the hexagonal body, and the second docking surface (2), the fifth docking surface (5) and the sixth docking surface (6) being spare docking surfaces.

3. The oil circuit adapter of a fan gearbox according to claim 1, characterized in that: The first butt joint surface (1) is provided with a group of threaded holes (8), the threaded holes (8) are blind holes, and the first oil pipe (14) is mounted and fixed to the first butt joint surface (1) by means of bolts.

4. The oil circuit adapter of a fan gearbox according to claim 1, characterized in that: The plane opposite to the third docking surface (3) is a fourth docking surface (4), and an exhaust hole (9) is provided on the fourth docking surface (4), and the exhaust hole (9) is connected to the right-angle bend (7) inside the hexagonal body.

5. The oil circuit adapter of a fan gearbox according to claim 4, characterized in that: A sealing ring groove (10) is provided on the fourth docking surface (4) at the position of the exhaust hole (9), and a sealing screw plug is installed.

6. The oil circuit adapter of a fan gearbox according to claim 1, characterized in that: The third docking surface (3) is provided with a group of bolt holes (11), the bolt holes (11) being through holes that pass from the third docking surface (3) to the fourth docking surface (4), and bolts are installed in the bolt holes (11) to fix the oil circuit adapter device on the oil pump (13).

7. The oil circuit adapter of a fan gearbox according to claim 1, characterized in that: The oil circuit adapter is made of stainless steel.

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