Gearbox lubrication temperature control device for wind power generation

Abstract

The utility model discloses a gearbox lubrication temperature control device for wind power generation, which comprises a shell, an oil inlet pipe mounted on the left side of the bottom of the inner wall of the shell, an oil pump mounted at one end of the oil inlet pipe positioned in an inner cavity of the shell in a butt joint manner, a heating pipe mounted at the oil outlet end of the oil pump in a butt joint manner, and a heating coil mounted in an inner cavity of the heating pipe, the left side of the top of the oil inlet pipe is provided with a branch pipe, the bottom of an inner cavity of the branch pipe is provided with a supporting ring, the top of the supporting ring is provided with a spring, the top of the spring is in butt joint with a piston, and the right side of the top of the oil inlet pipe is provided with an air pipe. Through the design and use of a branch pipe, a piston, an air pipe, a spring, a heating pipe and a heating coil, when the outdoor temperature is too low, air can be heated to achieve periodic circulation movement, rapid melting of high-viscosity moist in a pipeline is accelerated, and the service life of the pipeline is prolonged. The problem that in the prior art, viscosity of lubricating oil in a pipeline is increased due to the fact that the temperature of the external environment is too low, and circulating flow of the lubricating oil is not smooth is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of gear boxes, in particular to a gear box lubrication and temperature control device for wind power generation. Background Art

[0002] The gearbox is an important mechanical component that is widely used in wind turbines. Its main function is to transmit the power generated by the wind wheel under the action of wind to the generator and make it obtain the corresponding speed.

[0003] Lubricating oil is the blood flowing in the gearbox and plays a vital role. First of all, the most basic function is lubrication. Lubricating oil forms an oil film on the tooth surface and bearing to prevent mutual friction between gear parts and reduce wear. At the same time, lubricating oil can also take away a lot of heat generated during the movement between the friction pairs to prevent burning of gears and bearings. In addition, lubricating oil can also take away impurities during the continuous flow process to ensure the cleanliness of the inside of the gearbox.

[0004] During the research on gear lubricants, it was found that there are at least the following problems in gearbox lubrication technology: it is difficult to control the temperature of the lubricant in the process of using the lubricant to lubricate the gearbox; the flowing lubricant may continue to heat up due to the heat generated by friction, which may easily cause the gearbox to shut down due to the high temperature of the lubricant, or the viscosity may increase due to the low outside temperature, making it difficult to flow.

[0005] In order to solve this technical problem, there is an existing technology: CN115264040B, a lubricating oil temperature control system for a gearbox. This technical solution controls the start and stop of the oil pump by temperature detection, and then realizes the circulation of the lubricating oil. In the process of lubricating oil circulation, the flowing lubricating oil can be cooled and dissipated and heated. However, this technical solution still has defects and problems: when the lubricating oil is transferred from the gearbox and stays in the pipeline, especially when the outdoor temperature is too low, the viscosity of the lubricating oil in the pipeline is easily increased, and the pipeline is blocked and the circulation of the lubricating oil cannot be realized. Although the above technical solution has a heating effect, its heating path is planned, and it still cannot solve the problem of increased viscosity and easy blockage of the lubricating oil in the pipeline of the oil pump inlet section.

[0006] Therefore, we propose a gearbox lubrication control device to solve the defects and problems in the above technical solutions. Utility Model Content

[0007] The utility model aims to provide a gearbox lubrication and temperature control device for wind power generation to solve the problems raised in the above-mentioned background technology.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A lubrication and temperature control device for a gearbox for wind power generation comprises a shell, an oil inlet pipe is installed on the left side of the bottom of the inner wall of the shell, an oil pump is butt-mounted at one end of the oil inlet pipe located in the inner cavity of the shell, a heating pipe is butt-mounted at the oil outlet end of the oil pump, a heating coil is installed in the inner cavity of the heating pipe, a branch pipe is installed on the left side of the top of the oil inlet pipe, a support ring is installed at the bottom of the inner cavity of the branch pipe, a spring is installed on the top of the support ring, a piston is butt-mounted on the top of the spring, and an air pipe is installed on the right side of the top of the oil inlet pipe.

[0010] Preferably, both ends of the heating coil pass through the heating tube and extend to the outside of the heating tube, and the two ends of the heating coil are electrically connected to the positive and negative poles of the power supply in the power generation equipment respectively.

[0011] Preferably, a filter is installed at the top of the inner cavity of the branch pipe, and the bottom of the filter is in compression contact with the top of the piston in an initial state.

[0012] Preferably, the inner cavity of the trachea is communicated with the inner cavity of the branch pipe, and the inner cavities of the trachea and the branch pipe are both communicated with the inner cavity of the oil inlet pipe.

[0013] Preferably, the outer diameter of the piston is the same as the inner diameter of the branch pipe, and the piston blocks one end of the air pipe in an initial state.

[0014] Preferably, a cooling pipe is butt-jointedly installed at the end of the heating pipe, a cooling fan is installed on the top of the shell, and the cooling fan is located directly above the cooling pipe.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The wind power gearbox lubrication temperature control device, through the design and use of branch pipes, pistons, air pipes, springs, heating pipes and heating coils, can heat the air to achieve periodic circulation when the outdoor temperature is too low, thereby accelerating the rapid melting of the highly viscous lubricant in the pipeline, and effectively solving the problem in the prior art that the viscosity of the lubricating oil in the pipeline increases due to the low external ambient temperature, resulting in poor circulation of the lubricating oil.

[0017] 2. The wind power gearbox lubrication temperature control device starts the oil pump and the cooling fan when it detects that the temperature in the gearbox is too high. At this time, the high-temperature lubricating oil sucked out passes through the winding pipeline, which increases its flow path in the external environment and cools it down. At the same time, the cooling fan can further accelerate the heat dissipation of the lubricating oil during the circulation period. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the internal parts of the housing of the utility model;

[0020] Figure 3 This is an exploded diagram of the heating tube structure of the utility model;

[0021] Figure 4 This is an exploded view of the oil inlet pipeline position structure of the utility model.

[0022] In the figure: 1. Shell; 2. Oil inlet pipe; 3. Oil pump; 4. Heating pipe; 5. Heating coil; 6. Branch pipe; 7. Air pipe; 8. Support ring; 9. Spring; 10. Piston; 11. Filter; 12. Cooling pipe; 13. Cooling fan. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] The utility model provides a technical solution for a lubrication and temperature control device for a gear box for wind power generation:

[0025] Example:

[0026] The main structure of the device is a shell 1, an oil inlet pipe 2 is paved on the left side of the bottom of the inner wall of the shell 1, one end of the oil inlet pipe 2 is docked with the oil outlet pipe of the gear box, and the other end is docked with an oil pump 3, a heating pipe 4 is docked with the oil outlet port of the oil pump 3, and a heating coil 5 is installed in the inner cavity of the heating pipe 4;

[0027] A branch pipe 6 is installed on the left side of the top of the oil inlet pipe 2, and an air pipe 7 is installed on the right side of the top of the oil inlet pipe 2. A funnel-shaped support ring 8 is installed at the bottom of the inner cavity of the branch pipe 6 through fasteners. A spring 9 is fixedly installed on the top of the support ring 8, and a piston 10 is fixedly installed on the top of the spring 9.

[0028] The inner cavities of the branch pipe 6 and the air pipe 7 are both connected to the inner cavity of the oil inlet pipe 2 , and the inner cavity of the branch pipe 6 is connected to the inner cavity of the air pipe 7 .

[0029] The diameter of the piston 10 is the same as the inner diameter of the branch pipe 6 , and the piston 10 blocks one end of the air pipe 7 in the initial state.

[0030] A filter 11 is installed at the top of the inner cavity of the branch pipe 6. The main function of the filter 11 is to filter the incoming air to prevent the entry of impurities that affect the quality of the lubricating oil.

[0031] In this embodiment, Figure 1-4 As shown, when the present device is used, one end of the oil inlet pipe 2 is connected to the gearbox lubricating oil outlet pipe and installed, and the same technical solution as that in the comparative document is adopted in the gearbox, that is, a sensor is arranged in the gearbox, and the data received by the sensor is used to control the start and stop of the oil pump 4 and the heating coil 5.

[0032] When the temperature of the gearbox and the external environment is too low, the oil pump 3 and the heating coil 5 are started, and the oil pump 3 generates suction. However, since the temperature of the exposed pipe structure is too low, the viscosity of the lubricating oil increases. In the initial state, the suction generated by the oil pump 3 cannot draw the highly viscous lubricating oil. At this time, the suction will act on the highly viscous lubricating oil and the piston 10. The piston 10 will move downward along the branch pipe 6 and squeeze the spring 8 under the influence of the suction. At this time, the air pipe 7 is connected to the inner cavity of the branch pipe 6, and the suction will draw part of the air from the air pipe 7. The air enters the gear box and is heated in the heating tube 4. Then, the airflow with a certain amount of heat can circulate, that is, the air enters the gear box and then returns to the oil inlet pipe 2. During this flow process, the air with heat will gradually remove heat from the lubricating oil in the pipeline that is too cold, reducing its viscosity, so that the suction force generated by the oil pump 3 can gradually suck out the lubricating oil. As the lubricating oil can flow smoothly in the pipeline, the force acting on the piston 10 will decrease, and the spring 9 will push the piston 10 to return to its original position and block the air pipe 7 again.

[0033] Among them, a cooling pipe 12 is installed at the end of the heating pipe 4, and the end of the cooling pipe 12 is installed at the oil inlet end pipeline of the gear box. A cooling fan 13 is installed through the top of the outer shell 1, and the cooling fan 13 is located directly above the cooling pipe 12.

[0034] In this embodiment, when it is detected that the temperature in the gear box is too high, the oil pump 3 and the cooling fan 13 are started. At this time, the high-temperature lubricating oil sucked out passes through the winding pipeline, which increases its flow path in the external environment, thereby dissipating heat and cooling it. At the same time, the cooling fan 13 can further accelerate the heat dissipation of the lubricating oil during the circulation period.

[0035] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gearbox lubrication and temperature control device for wind power generation, comprising a housing (1), characterized in that: An oil inlet pipe (2) is installed on the left side of the bottom of the inner wall of the shell (1); an oil pump (3) is butt-connected to one end of the oil inlet pipe (2) located in the inner cavity of the shell (1); a heating pipe (4) is butt-connected to the oil outlet end of the oil pump (3); a heating coil (5) is installed in the inner cavity of the heating pipe (4); a branch pipe (6) is installed on the left side of the top of the oil inlet pipe (2); a support ring (8) is installed at the bottom of the inner cavity of the branch pipe (6); a spring (9) is installed on the top of the support ring (8); a piston (10) is butt-connected to the top of the spring (9); and an air pipe (7) is installed on the right side of the top of the oil inlet pipe (2).

2. A wind power generation gearbox lubrication and temperature control device according to claim 1, characterized in that: Both ends of the heating coil (5) penetrate the heating tube (4) and extend to the outside of the heating tube (4), and the two ends of the heating coil (5) are respectively electrically connected to the positive and negative poles of the power supply in the power generation equipment.

3. The wind power generation gearbox lubrication and temperature control device according to claim 1, characterized in that: A filter plate (11) is installed at the top of the inner cavity of the branch pipe (6), and in an initial state, the bottom of the filter plate (11) is in compression contact with the top of the piston (10).

4. The wind power generation gearbox lubrication and temperature control device according to claim 1, characterized in that: The inner cavity of the air pipe (7) is connected to the inner cavity of the branch pipe (6), and the inner cavities of the air pipe (7) and the branch pipe (6) are both connected to the inner cavity of the oil inlet pipe (2).

5. The wind power generation gearbox lubrication and temperature control device according to claim 1, characterized in that: The outer diameter of the piston (10) is the same as the inner diameter of the branch pipe (6), and the piston (10) blocks one end of the air pipe (7) in an initial state.

6. A wind power generation gearbox lubrication and temperature control device according to claim 1, characterized in that: A cooling pipe (12) is butt-jointed to the end of the heating pipe (4), and a cooling fan (13) is installed on the top of the housing (1), wherein the cooling fan (13) is located directly above the cooling pipe (12).

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