Wind power generation equipment with heat dissipation system

Abstract

The invention discloses a wind power generation device with a heat dissipation system, and relates to the technical field of wind power generation, the wind power generation device with the heat dissipation system comprises a cabin, blades and the heat dissipation system, the heat dissipation system comprises a first heat dissipation module and a second heat dissipation module, the first heat dissipation module comprises a first heat dissipation assembly and a recycling pipeline, and the second heat dissipation module comprises a second heat dissipation assembly. The recycling pipeline comprises a gas inlet section, a cooling section and a backflow section, gasified lubricating oil in the gearbox enters the gas inlet section and moves to the cooling section from the gas inlet section, and the first heat dissipation module is used for reducing the temperature of the cooling section, so that gaseous lubricating oil in the cooling section is converted into liquid lubricating oil and flows into the gearbox through the backflow section; the backflow lubricating oil not only can be used for lubricating parts in the gear box again, but also can exchange heat with the parts in the gear box, so that the temperature of the gear box is reduced, and the service life of the gear box is prolonged; the second heat dissipation module is used for reducing the temperature of liquid lubricating oil in the gearbox, so that the service life of the gearbox is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and in particular to a wind power generation device with a heat dissipation system. Background Art

[0002] As the impact of the greenhouse effect becomes increasingly severe, people are increasingly prioritizing clean energy, leading to a growing demand for wind turbines. When wind blows on the blades of existing wind turbines, they drive the connected main shaft to rotate, converting the wind energy into mechanical energy. The main shaft then rotates the rotor inside the generator, which cuts through the magnetic lines of flux in the stator's magnetic field, generating an induced electromotive force (EMF), thereby converting the mechanical energy into electrical energy. This energy can then be transmitted to the power grid or used for other electrical devices.

[0003] Wind turbine blades rotate at a relatively low speed, while the generator requires a higher speed for efficient power generation. Existing wind turbines typically use a gearbox to boost the low main shaft speed to the required high generator speed to enable normal power generation. However, over time, the gearbox heats up, generating abnormal noise and significantly shortening its lifespan. Summary of the Invention

[0004] The main purpose of the present invention is to provide a wind power generation equipment with a heat dissipation system, which is intended to reduce the temperature of the gear box of the wind generator set.

[0005] To achieve the above-mentioned object, the present invention proposes a wind turbine generator with a heat dissipation system, comprising a nacelle and blades, wherein a generator and a gearbox are disposed inside the nacelle. The wind turbine generator with a heat dissipation system further comprises a heat dissipation system, wherein the heat dissipation system comprises:

[0006] a first heat dissipation module, the first heat dissipation module comprising a first heat dissipation component and a recycling pipeline, the recycling pipeline comprising an air intake section, a cooling section, and a return section that are connected in sequence, the air intake section having an end facing away from the cooling section communicating with a top wall of the gear box so that vaporized lubricating oil in the gear box can enter the air intake section and move from the air intake section to the cooling section, the first heat dissipation component being connected to the cooling section for reducing a temperature of the cooling section so that the gaseous lubricating oil in the cooling section is converted into liquid lubricating oil, and the return section having an end facing away from the cooling section communicating with a side wall of the gear box so that the liquid lubricating oil can return to the gear box through the return section;

[0007] The second heat dissipation module includes a second heat dissipation component, a cooling circulation pipeline and an oil pump arranged on the cooling circulation pipeline. The cooling circulation pipeline includes an oil inlet section, a heat dissipation section and an oil return section connected in sequence. The end of the oil inlet section away from the heat dissipation section is connected to the bottom of the gear box. The second heat dissipation component is connected to the heat dissipation section for reducing the temperature of the heat dissipation section. The end of the oil return section away from the heat dissipation section is connected to the gear box. The oil pump is used to drive the lubricating oil flowing into the oil inlet section to flow through the cooling section and the oil return section in sequence and then flow into the gear box.

[0008] In one embodiment, the cooling section is arranged in a wave-like and zigzag manner, so that the cooling section forms a plurality of wave peaks and a plurality of wave troughs.

[0009] In one embodiment, the cooling section floats in a vertical direction, and the recycling pipeline further includes a plurality of recovery sections, the number of the recovery sections is consistent with the number of the troughs and they are arranged in a one-to-one correspondence, one end of the recovery section is connected to the trough, and the other end of the recovery section is connected to the reflux section.

[0010] In one embodiment, the first heat dissipation module includes a first pump body, a first heat dissipation element and a first heat dissipation pipeline. The first pump body is arranged in the first heat dissipation pipeline. The first heat dissipation element is arranged outside the cabin. The first heat dissipation pipeline includes a first heat exchange section, a first cooling section and a first connecting section connecting the first heat exchange section and the first cooling section. The first heat exchange section is connected to the cooling section. The cabin is provided with a first through hole corresponding to the first heat dissipation element. The first cooling section is connected to the first heat dissipation element through the first through hole.

[0011] In one embodiment, a plurality of first heat dissipation fins are provided on a side of the first heat dissipation member facing away from the first through hole. The plurality of first heat dissipation fins extend along the axial direction of the hub connected to the blades, so that a first airflow channel is formed between any two adjacent first heat dissipation fins. The first airflow channel extends along the axial direction of the hub connected to the blades.

[0012] And / or, the first heat exchange section is arranged in a wavy and zigzag manner;

[0013] And / or, the first cooling section is arranged in a wave-like and zigzag manner;

[0014] And / or, the first heat dissipation module further includes a first heat conducting plate, one side of the first heat conducting plate is connected to the first heat exchange section, and the other side of the first heat conducting plate is connected to the cooling section.

[0015] In one embodiment, the second heat dissipation assembly includes a second pump body, a second heat dissipation element, and a second heat dissipation pipeline. The second pump body is arranged in the second heat dissipation pipeline, the second heat dissipation element is arranged outside the cabin, the second heat dissipation pipeline includes a second heat exchange section, a second cooling section, and a second connecting section connecting the second heat exchange section and the second cooling section. The second heat exchange section is connected to the heat dissipation section. The cabin is provided with a second through hole corresponding to the second heat dissipation element, and the second cooling section is connected to the second heat dissipation element through the second through hole.

[0016] In one embodiment, a plurality of second heat dissipation fins are provided on a side of the second heat dissipation member facing away from the second through hole, and the plurality of second heat dissipation fins extend along the axial direction of the hub connected to the blades, so that a second air flow channel is formed between any two adjacent second heat dissipation fins, and the second air flow channel extends along the axial direction of the hub connected to the blades;

[0017] And / or, the second heat exchange section is arranged in a wavy and zigzag manner;

[0018] And / or, the second cooling section is arranged in a wave-like and zigzag manner;

[0019] And / or, the second heat dissipation module further includes a second heat conducting plate, one side of the second heat conducting plate is connected to the second heat exchange section, and the other side of the second heat conducting plate is connected to the heat dissipation section.

[0020] In one embodiment, the wind power generation equipment with a heat dissipation system further includes a filter, and the filter is embedded in the reflux section and is used to filter the lubricating oil in the reflux section.

[0021] In one embodiment, the filter is detachably connected to the reflux section; one end of the reflux section is detachably connected to the cooling section, and the other end of the reflux section is detachably connected to the side wall of the gear box.

[0022] In one embodiment, the wind power generation equipment with a heat dissipation system also includes a circulation fan, which is arranged at an end of the air intake section away from the cooling section, the air intake side of the circulation fan faces the gear box, and the air outlet side of the circulation fan faces the air intake section.

[0023] The technical solution of the present invention recovers vaporized lubricating oil through the air intake section, and the gaseous lubricating oil flows into the cooling section through the air intake section. The first heat dissipation component converts the gaseous lubricating oil in the cooling section into liquid lubricating oil by lowering the temperature of the cooling section. The temperature of the lubricating oil itself is reduced and it returns to liquid state, and flows back to the gear box through the return section. The returned lubricating oil can not only be reused to lubricate the components in the gear box, but also can exchange heat with the components in the gear box, thereby reducing the temperature of the gear box and extending the life of the gear box; the liquid lubricating oil in the gear box is sucked into the oil intake section by the action of the oil pump, and then moved from the oil intake section to the heat dissipation section, and the heat dissipation section is cooled by the second heat dissipation component, thereby reducing the temperature of the lubricating oil in the heat dissipation section. The lubricating oil with reduced temperature then enters the gear box from the return oil section under the drive of the oil pump. The cooled lubricating oil can not only provide better lubrication effect for the components in the gear box, but also can exchange heat with the components in the gear box, thereby reducing the temperature of the gear box and extending the life of the gear box. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0025] Figure 1 A schematic structural diagram of an embodiment of the connection between the gearbox and the heat dissipation system provided by the present invention;

[0026] Figure 2 A schematic structural diagram of the connection between the gearbox and the heat dissipation system provided by the present invention from another perspective;

[0027] Figure 3 A schematic diagram of the structure of the driving member provided by the present invention driving the connecting piece to move between the connecting position and the disconnecting position;

[0028] Figure 4 A schematic structural diagram of an embodiment of a wind power generation device with a heat dissipation system provided by the present invention;

[0029] Figure 5 A schematic structural diagram of a wind power generation device with a heat dissipation system provided by the present invention from another perspective.

[0030] Description of Figure Numbers:

[0031] 100. Wind turbine with heat dissipation system; 1. Nacelle; 2. Blades; 3. Gearbox; 4. Heat dissipation system; 41. First heat dissipation module; 411. First heat dissipation assembly; 4111. First pump body; 4112. First heat dissipation element; 41121. First heat dissipation fin; 41122. First air flow channel; 4113. First heat dissipation pipeline; 41131. First heat exchange section; 41132. First cooling section; 41133. First connecting section; 4114. First heat conducting plate; 412. Recycling pipeline; 4121. Air intake section; 4122. Cooling section; 41221. Wave crest; 4 1222, trough; 4123, reflux section; 4124, recovery section; 42, second heat dissipation module; 421, second heat dissipation assembly; 4211, second pump body; 4212, second heat dissipation element; 42121, second heat dissipation fins; 42122, second air flow channel; 4213, second heat dissipation pipeline; 42131, second heat exchange section; 42132, second cooling section; 42133, second connecting section; 422, cooling circulation pipeline; 4221, oil inlet section; 4222, heat dissipation section; 4223, oil return section; 423, oil pump; 424, second heat conductive sheet; 5, driving member; 6, connecting piece.

[0032] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0034] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] As the impact of the greenhouse effect becomes increasingly severe, people are increasingly prioritizing clean energy, leading to a growing demand for wind turbines. When wind blows on the blades of existing wind turbines, they drive the connected main shaft to rotate, converting the wind energy into mechanical energy. The main shaft then rotates the rotor inside the generator, which cuts through the magnetic lines of flux in the stator's magnetic field, generating an induced electromotive force (EMF), thereby converting the mechanical energy into electrical energy. This energy can then be transmitted to the power grid or used for other electrical devices.

[0037] Wind turbine blades rotate at a relatively low speed, while the generator requires a higher speed for efficient power generation. Existing wind turbines typically use a gearbox to boost the low main shaft speed to the required high generator speed to enable normal power generation. However, over time, the gearbox heats up, generating abnormal noise and significantly shortening its lifespan.

[0038] The inventors have discovered that an increase in temperature inside the gearbox will cause the viscosity of the lubricating oil to decrease, resulting in the thinning of the lubricating protective film formed between the friction surfaces, a decrease in load-bearing capacity, and an inability to effectively isolate direct metal contact between components such as gears and bearings, increasing the risk of wear, aggravating tooth surface wear, and causing scratches, pits, broken teeth and other problems, which in turn cause abnormal noises in the gearbox and seriously affect the life of the gearbox.

[0039] In view of this, the present invention proposes a wind power generation equipment with a heat dissipation system, which is intended to reduce the temperature of a gear box in a wind turbine generator set.

[0040] See also Figure 1 、 Figure 2 and Figure 4In one embodiment of the present invention, the wind turbine generator 100 with a heat dissipation system includes a nacelle 1 and blades 2. A generator and a gearbox 3 are arranged inside the nacelle 1. The wind turbine generator 100 with a heat dissipation system also includes a heat dissipation system 4. The heat dissipation system 4 includes a first heat dissipation module 41 and a second heat dissipation module 42. The first heat dissipation module 41 includes a first heat dissipation component 411 and a recycling pipeline 412. The recycling pipeline 412 includes an air intake section 4121, a cooling section 4122 and a return section 4123 connected in sequence. The end of the air intake section 4121 away from the cooling section 4122 is connected to the top wall of the gearbox 3 so that the vaporized lubricating oil in the gearbox 3 can enter the air intake section 4121 and move from the air intake section 4121 to the cooling section 4122. The first heat dissipation component 411 is connected to the cooling section 4122 to reduce the temperature of the cooling section 4122 so that the gas in the cooling section 4122 The lubricating oil is converted into liquid lubricating oil, and the end of the reflux section 4123 away from the cooling section 4122 is connected to the side wall of the gear box 3, so that the liquid lubricating oil can return to the gear box 3 through the reflux section 4123; the second heat dissipation module 42 includes a second heat dissipation component 421, a cooling circulation pipeline 422 and an oil pump 423 arranged on the cooling circulation pipeline 422. The cooling circulation pipeline 422 includes an oil inlet section 4221, a heat dissipation section 4222 and an oil return section 4223 connected in sequence. The end of the oil inlet section 4221 away from the heat dissipation section 4222 is connected to the bottom of the gear box 3, the second heat dissipation component 421 is connected to the heat dissipation section 4222, and is used to reduce the temperature of the heat dissipation section 4222. The end of the oil return section 4223 away from the heat dissipation section 4222 is connected to the gear box 3, and the oil pump 423 is used to drive the lubricating oil flowing into the oil inlet section 4221 to flow through the cooling section 4122 and the oil return section 4223 in sequence and then flow into the gear box 3.

[0041] The inventors have also discovered that when the gearbox 3 is subjected to prolonged ultra-high temperature operation or overload, the lubricating oil temperature can rise dramatically. If the temperature exceeds the boiling point or flash point of the lubricating oil, the light components in the lubricating oil may vaporize, leading to oil vaporization. This phenomenon reduces the amount of lubricating oil, depriving components like gears and bearings of adequate lubrication, exacerbating wear and causing failures, and seriously shortening the life of the gearbox 3. In this embodiment, the vaporized lubricating oil is recovered through the air intake section 4121, and the gaseous lubricating oil flows into the cooling section 4122 through the air intake section 4121. The first heat dissipation component 411 converts the gaseous lubricating oil in the cooling section 4122 into liquid lubricating oil by lowering the temperature of the cooling section 4122. The temperature of the lubricating oil itself is reduced and restored to liquid state, and it flows back into the gear box 3 through the reflux section 4123. The refluxed lubricating oil can not only be reused for lubricating the parts in the gear box 3, thereby ensuring that there is sufficient lubricating oil in the gear box 3 for lubrication, but also because the temperature of the lubricating oil drops, the viscosity will increase, making it easier to form an oil film on the surface of parts such as gears and bearings, thereby reducing the wear of these parts and extending their service life; and the lubricating oil after the temperature drops flows back to the gear box 3 can also exchange heat with the parts in the gear box 3, thereby reducing the temperature of the gear box 3, thereby extending the life of the gear box 3; the liquid lubricating oil in the gear box 3 is sucked into the oil inlet section 4221 by the action of the oil pump 423, and then moves from the oil inlet section 4221 to the heat dissipation section 4222, and cools the heat dissipation section 4222 through the second heat dissipation component 421, thereby reducing the temperature of the lubricating oil in the heat dissipation section 4222, and the lubricating oil with reduced temperature enters the gear box 3 from the oil return section 4223 under the drive of the oil pump 423. The cooled lubricating oil can not only provide better lubrication effect for the parts in the gear box 3, but also can exchange heat with the parts in the gear box 3, thereby reducing the temperature of the gear box 3, and further extending the life of the gear box 3. It should be noted that the first heat dissipation component 411 and the second heat dissipation component 421 can be existing semiconductor refrigeration plates or other components, and are not limited here; the oil pump 423 can be implemented using the existing oil pump 423, and the connection relationship between the cabin 1, blades 2, hub, generator and gearbox 3 can be implemented using the existing connection method, which will not be repeated here.

[0042] See also Figure 1 and Figure 2In one embodiment, the cooling section 4122 is arranged in a wavy, zigzag pattern, forming multiple peaks 41221 and troughs 41222. This wavy, zigzag pattern increases the contact area between the cooling section 4122 and the first heat sink 411, allowing the first heat sink 411 to cool more lubricating oil at the same time, improving the cooling effect. Furthermore, the wavy, zigzag pattern of the cooling section 4122 prolongs the lubricating oil's path. While maintaining the lubricating oil's speed, the lubricating oil's time within the cooling section 4122 is prolonged, allowing the lubricating oil to exchange heat with the first heat sink 411 for a longer period of time. This effectively reduces the lubricating oil's temperature, allowing the cooler lubricating oil to flow from the return section 4123 into the gearbox 3, providing better lubrication for the gears and bearings, while also removing some of the heat generated by the gears and bearings. This further reduces the temperature of the gearbox 3 and extends its lifespan. The cooling section 4122 can be arranged in a wavy, zigzag pattern within a horizontal plane.

[0043] See also Figure 1In one embodiment, the cooling section 4122 floats in the vertical direction, and the recycling pipeline 412 also includes a plurality of recovery sections 4124. The number of the recovery sections 4124 is the same as that of the troughs 41222 and they are arranged in a one-to-one correspondence. One end of the recovery section 4124 is connected to the trough 41222, and the other end of the recovery section 4124 is connected to the reflux section 4123. The cooling section 4122 floats in the vertical direction, so that the lubricating oil converted into liquid naturally flows to the trough 41222 under the action of gravity. Since a recovery section 4124 is provided at the bottom of each trough 41222, the liquid lubricating oil located in the trough 41222 can enter the reflux section 4123 through the recovery section 4124, and then smoothly flow into the gear box 3 from the reflux section 4123. Since the high-temperature gaseous lubricating oil will float, it basically will not enter the reflux section 4123 through the recovery section 4124. Therefore, this arrangement realizes the separation of gaseous lubricating oil and liquid lubricating oil. As the gaseous lubricating oil moves in the cooling section 4122, a part of the gaseous lubricating oil is converted into liquid lubricating oil and enters the gear through the recovery section 4124 and the reflux section 4123. In gearbox 3, the lubricating oil still in a gaseous state continues to move in cooling section 4122 and continuously converts into liquid lubricating oil. Ideally, the gaseous lubricating oil is completely converted into liquid lubricating oil before or after the entire cooling section 4122. In actual use, some gaseous lubricating oil may still be in a gaseous state after passing through cooling section 4122 and enter gearbox 3 through reflux section 4123. However, the amount of this gaseous lubricating oil is significantly reduced compared to the amount before entering cooling section 4122. The conversion of most gaseous lubricating oil into liquid lubricating oil ensures that there is sufficient lubricating oil in gearbox 3. By exchanging heat with components such as gears and bearings in gearbox 3, the heat of gearbox 3 is reduced, and the life of gearbox 3 can still be extended. The gaseous lubricating oil in gearbox 3 enters intake section 4121 again, and the cycle repeats.

[0044] See also Figure 2In one embodiment, the first heat dissipation module 41 includes a first pump body 4111, a first heat dissipation element 4112 and a first heat dissipation pipeline 4113. The first pump body 4111 is arranged in the first heat dissipation pipeline 4113. The first heat dissipation element 4112 is arranged outside the cabin 1. The first heat dissipation pipeline 4113 includes a first heat exchange section 41131, a first cooling section 41132 and a first connecting section 41133 connecting the first heat exchange section 41131 and the first cooling section 41132. The first heat exchange section 41131 is connected to the cooling section 4122. The cabin 1 is provided with a first through hole corresponding to the first heat dissipation element 4112. The first cooling section 41132 is connected to the first heat dissipation element 4112 through the first through hole. The first pump body 4111 is used to drive the fluid in the first heat dissipation pipeline 4113 to move in the first heat dissipation pipeline 4113. When the fluid flows through the first heat exchange section 41131, the fluid in the first heat exchange section 41131 exchanges heat with the cooling section 4122. To be more precise, the fluid in the first heat exchange section 41131 exchanges heat with the lubricating oil in the cooling section 4122. This part of the fluid absorbs the heat of the lubricating oil, the fluid temperature increases, and the lubricating oil temperature decreases. The first pump body 4111 then drives this part of the fluid to pass through the first connecting section 41133 into the first cooling section 41132. The fluid in the first cooling section 41132 exchanges heat with the first heat dissipation element 4112, and the fluid temperature drops. The fluid after the temperature drops enters the first heat exchange section 41131 through the first connecting section 41133, and this reciprocating process effectively reduces the temperature of the lubricating oil in the cooling section 4122. It should be noted that the temperature of the first heat sink 4112 rises. The first heat sink 4112 is located outside the cabin 1 and directly exchanges heat with the external natural environment, thereby reducing the temperature of the first heat sink 4112. The first heat sink 4112 can be a metal part, and the first heat sink 4112 can be a copper heat sink or an aluminum heat sink. It should also be noted that the first pump body 4111 can be a water pump, and the fluid flowing in the first heat dissipation pipe 4113 is water; the first pump body 4111 can also be an electromagnetic pump, and the fluid flowing in the first heat dissipation pipe 4113 is liquid metal; wherein, the electromagnetic pump is based on the principles of electromagnetic induction and the Lorentz force. When current passes through a conductor, it will be affected by a force (Lorentz force) in a magnetic field. For electromagnetic pumps, when a conductive fluid (such as an electrolyte, molten metal, etc.) flows in a magnetic field and current flows through it, the current and magnetic field interact to generate a force perpendicular to both directions, thereby promoting the movement of the fluid and achieving the purpose of conveying the fluid; liquid metal has a higher thermal conductivity than water, and using liquid metal in conjunction with an electromagnetic pump to dissipate heat from the lubricating oil can achieve a better heat dissipation effect; the liquid metal can be an existing gallium-indium-tin alloy or lead-bismuth eutectic alloy, etc., and there is no restriction here.

[0045] See also Figure 4In one embodiment, a plurality of first heat dissipation fins 41121 are provided on the side of the first heat dissipation element 4112 away from the first through hole, and the plurality of first heat dissipation fins 41121 extend along the axial direction of the hub connected to the blade 2, so that a first air flow channel 41122 is formed between any two adjacent first heat dissipation fins 41121, and the first air flow channel 41122 extends along the axial direction of the hub connected to the blade 2; by providing a plurality of heat dissipation fins, the contact area between the first heat dissipation element 4112 and the external environment is increased, and the heat dissipation efficiency of the first heat dissipation element 4112 is improved, wherein the first air flow channel 41122 extends along the axial direction of the hub connected to the blade 2, so that the wind that blows the blade 2 to rotate can also flow in the first air flow channel 41122, accelerate the flow rate of the gas in the first air flow channel 41122, take away the heat on the first heat dissipation element 4112 more quickly, and improve the heat dissipation effect of the first heat dissipation element 4112.

[0046] See also Figure 2 In one embodiment, the first heat exchange section 41131 is arranged in a wave-like and tortuous manner; wherein the first heat exchange section 41131 is arranged in a wave-like manner, thereby effectively increasing the contact area between the first heat exchange section 41131 and the cooling section 4122, and effectively improving the heat exchange efficiency between the first heat exchange section 41131 and the cooling section 4122.

[0047] See also Figure 2 In one embodiment, the first cooling section 41132 is arranged in a wave-like and tortuous manner; the first cooling section 41132 is arranged in a wave-like and tortuous manner, thereby effectively increasing the contact area between the first cooling section 41132 and the first heat sink 4112, and effectively improving the heat exchange efficiency between the first cooling section 41132 and the first heat sink 4112.

[0048] See also Figure 1 and Figure 2In one embodiment, the first heat dissipation module 41 further includes a first heat conducting sheet 4114. One side of the first heat conducting sheet 4114 is connected to the first heat exchange section 41131, and the other side of the first heat conducting sheet 4114 is connected to the cooling section 4122. The provision of the first heat conducting sheet 4114 facilitates connection between the first heat exchange section 41131 and the cooling section 4122. Among them, the first heat exchange section 41131 can be welded to the first heat conducting plate 4114, and the first heat exchange section 41131 can also be bonded to the first heat conducting plate 4114 by thermal conductive glue, wherein bonding to the first heat conducting plate 4114 by thermal conductive glue can effectively increase the contact area between the first heat exchange section 41131 and the first heat conducting plate 4114, because the thermal conductive glue can fill part of the gap between the first heat exchange section 41131 and the first heat conducting plate 4114, thereby increasing the connection strength between the first heat exchange section 41131 and the first heat conducting plate 4114 and the contact area for heat exchange; similarly, the cooling section 4122 can also be welded to the first heat conducting plate 4114, and the cooling section 4122 can also be bonded to the first heat conducting plate 4114 by thermal conductive glue, thereby improving the connection strength between the cooling section 4122 and the first heat conducting plate 4114 and the contact area for heat exchange. It should be noted that the first heat conducting sheet 4114 can be a copper sheet or an aluminum sheet, which is not limited here.

[0049] See also Figure 2In one embodiment, the second heat dissipation assembly 421 includes a second pump body 4211, a second heat dissipation element 4212, and a second heat dissipation pipeline 4213. The second pump body 4211 is arranged in the second heat dissipation pipeline 4213, and the second heat dissipation element 4212 is arranged outside the cabin 1. The second heat dissipation pipeline 4213 includes a second heat exchange section 42131, a second cooling section 42132, and a second connecting section 42133 connecting the second heat exchange section 42131 and the second cooling section 42132. The second heat exchange section 42131 is connected to the heat dissipation section 4222. The cabin 1 is provided with a second through hole corresponding to the second heat dissipation element 4212, and the second cooling section 42132 is connected to the second heat dissipation element 4212 through the second through hole. The second pump body 4211 is used to drive the movement of the fluid in the second heat dissipation pipeline 4213. When the fluid is in the second heat exchange section 42131, the fluid in the second heat exchange section 42131 exchanges heat with the lubricating oil in the heat dissipation section 4222. The temperature of the fluid in the second heat exchange section 42131 increases, and the temperature of the lubricating oil in the heat dissipation section 4222 decreases. The second pump body 4211 then drives this part of the fluid to enter the second cooling section 42132 through the second connecting section 42133. The fluid in the second cooling section 42132 exchanges heat with the second heat dissipation element 4212. The temperature of the fluid in the second cooling section 42132 decreases, and the temperature of the second heat dissipation element 4212 increases. The second pump body 4211 then drives this part of the fluid to flow through the second connecting section 42133 into the second heat exchange section 42131, and so on. This reciprocating process effectively reduces the temperature of the lubricating oil, and further reduces the temperature of the gearbox 3. The second pump body 4211 can be a water pump, and the fluid flowing in the second heat dissipation pipe 4213 can be water. The second pump body 4211 can be an electromagnetic pump, and the fluid flowing in the second heat dissipation pipe 4213 can be liquid metal. The second heat sink 4212 absorbs heat from the fluid in the second cooling section 42132, and its temperature rises. Because the second heat sink 4212 is located outside the nacelle 1, it exchanges heat with the external environment, thereby reducing its temperature. This ensures that the second heat sink 4212 can effectively reduce the temperature of the fluid in the second cooling section 42132. The second heat sink 4212 can be either copper or aluminum.

[0050] See also Figure 5In one embodiment, a plurality of second heat dissipation fins 42121 are provided on the side of the second heat dissipation element 4212 away from the second through hole, and the plurality of second heat dissipation fins 42121 extend along the axial direction of the hub connected to the blade 2, so that a second air flow channel 42122 is formed between any two adjacent second heat dissipation fins 42121, and the second air flow channel 42122 extends along the axial direction of the hub connected to the blade 2; by providing a plurality of second heat dissipation fins 42121, the contact area between the second heat dissipation element 4212 and the air is increased, and the heat dissipation efficiency of the second heat dissipation element 4212 is improved; and a second air flow channel 42122 is formed between any two adjacent second heat dissipation fins 42121, and the second air flow channel 42122 extends along the axial direction of the hub connected to the blade 2, so that the wind that blows the blade 2 to rotate can also pass through the second air flow channel 42122 smoothly, thereby accelerating the flow rate of the gas in the second air flow channel 42122, and improving the heat dissipation efficiency of the second heat dissipation element 4212.

[0051] See also Figure 2 In one embodiment, the second heat exchange section 42131 is arranged in a wave-like and tortuous manner; wherein the second heat exchange section 42131 is arranged in a wave-like and tortuous manner, thereby effectively improving the contact area between the second heat exchange section 42131 and the heat dissipation section 4222, and effectively improving the heat exchange efficiency between the second heat exchange section 42131 and the heat dissipation section 4222.

[0052] See also Figure 2 In one embodiment, the second cooling section 42132 is arranged in a wave-like and tortuous manner; wherein the second cooling section 42132 is arranged in a wave-like and tortuous manner, thereby effectively improving the contact area between the second cooling section 42132 and the second heat dissipation element 4212, and effectively improving the heat exchange efficiency between the second cooling section 42132 and the second heat dissipation element 4212.

[0053] See also Figure 2 In one embodiment, the second heat dissipation module 42 further includes a second heat conductive sheet 424, one side of which is connected to the second heat exchange section 42131, and the other side of which is connected to the heat dissipation section 4222. The provision of the second heat conductive sheet 424 facilitates the connection between the second heat exchange section 42131 and the heat dissipation section 4222. The second heat exchange section 42131 can be welded to the second heat conductive sheet 424, or it can be bonded to the second heat conductive sheet 424 using thermal adhesive, thereby increasing the connection strength and contact area between the second heat exchange section 42131 and the second heat conductive sheet 424. Similarly, the heat dissipation section 4222 can be welded to the second heat conductive sheet 424, or it can be bonded to the second heat conductive sheet 424 using thermal adhesive, thereby increasing the connection strength and contact area between the heat dissipation section 4222 and the second heat conductive sheet 424.

[0054] See also Figures 1 to 3 According to one embodiment of the present invention, the wind power generation device 100 with a heat dissipation system further includes a driving member 5 and a connecting piece 6 that is transmission-connected to the driving member 5. The driving member 5 is used to drive the connecting piece 6 to move. The connecting piece 6 has a connection position and a separation position. When the connecting piece 6 is in the connection position, one end of the connecting piece 6 is connected to the first heat conducting piece 4114, and the other end of the connecting piece 6 is connected to the second heat conducting piece 424; when the connecting piece 6 is in the separation position, the connecting piece 6 is spaced apart from the first heat conducting piece 4114 and the second heat conducting piece 424; the wind power generation device 100 with a heat dissipation system further includes a liquid level detector, which is located inside the gear box 3 and is used to detect the liquid level of the lubricating oil. If the liquid level of the lubricating oil is greater than the preset liquid level height, it means that the amount of liquid lubricating oil in the gear box 3 is sufficient, that is, there is no or only a small amount of gaseous lubricating oil. At this time, the driving member 5 drives the connecting piece 6 to move to the connection position, so that the first heat dissipation component 411 and the second heat dissipation component 421 can cool the lubricating oil in the gear box 3 together, thereby improving the cooling efficiency, that is, the heat dissipation section 4 The lubricating oil in 222 can not only exchange heat with the fluid in the second heat exchange section 42131 through the second heat conducting plate 424, but also exchange heat with the fluid in the first heat exchange section 41131 through the second heat conducting plate 424, the connecting plate 6 and the first heat conducting plate 4114, thereby better reducing the temperature of the lubricating oil in the heat dissipation section 4222; when the liquid level detector detects that the liquid level of the liquid lubricating oil in the gear box 3 is less than or equal to the preset liquid level height, it means that the liquid lubricating oil in the gear box 3 is about to be insufficient or is insufficient. At this time, the driving member 5 is controlled to drive the connecting plate 6 to separate from the first heat conducting plate 4114 and the second heat conducting plate 424, so that the first heat dissipation module 41 can focus on converting the gaseous lubricating oil into liquid lubricating oil, so as to increase the amount of liquid lubricating oil in the gear box 3, reduce the wear of components such as gears and bearings in the gear box 3, and extend the life of the gear box 3. In addition, more liquid lubricating oil can better absorb the heat generated by components such as gears and bearings in the gear box 3, thereby effectively reducing the heat of the gear box 3. It should be noted that the driving member 5 can be a motor or an electric push rod. For example, the electric push rod has its output shaft connected to the connecting piece 6, enabling the electric push rod to drive the first connecting piece 6 to move. The first connecting piece 6 can be made of either copper or aluminum, without limitation. It should also be noted that the preset liquid level is the minimum level of lubricating oil required to ensure adequate lubrication of the components within the gearbox 3. The liquid level detector can be implemented using an existing liquid level detector.

[0055] In one embodiment, the wind turbine generator 100 with a heat dissipation system further includes a filter (not shown) embedded in the return section 4123 for filtering the lubricating oil within the return section 4123. By providing a filter to filter the lubricating oil within the return section 4123, impurities within the lubricating oil are minimized, allowing the lubricating oil flowing out of the return section 4123 to better perform its lubricating function. The filter can be an existing filter screen or a filter element, without limitation.

[0056] In one embodiment, the filter is detachably connected to the return section 4123; one end of the return section 4123 is detachably connected to the cooling section 4122, and the other end of the return section 4123 is detachably connected to the side wall of the gear box 3. The detachable connection between the filter and the return section 4123 facilitates filter replacement and installation. The filter can be detachably connected to the return section 4123 by snapping into a slot, or by threading. The two ends of the return section 4123 are detachably connected to the cooling section 4122 and the gear box 3, respectively, making it easy to remove the return section 4123 and replace the filter located therein. The return section 4123 can be detachably connected to the side wall of the gear box 3 and the cooling section 4122, respectively, through existing snap-fit ​​connections, or through existing threaded connections.

[0057] In one embodiment, the wind power generation equipment 100 with a heat dissipation system further includes a circulation fan (not shown), which is provided at one end of the air intake section 4121 away from the cooling section 4122, with the air intake side of the circulation fan facing the inside of the gear box 3, and the air outlet side of the circulation fan facing the air intake section 4121. The circulation fan is provided to accelerate the entry of the gaseous lubricating oil into the air intake section 4121, so that the gaseous lubricating oil can more easily enter the air intake section 4121. The circulation fan can be an existing fan, and the power source of the circulation fan can be powered by the electric energy generated by the wind turbine, or it can be engaged with the gears in the gear box 3 through a gear transmission assembly, and the circulation fan is driven to rotate by the rotation of the gears in the gear box 3, and there is no limitation here.

[0058] The above description is merely an exemplary embodiment of the present invention and does not limit the scope of protection of the present invention. Any equivalent structural transformation made by using the contents of the present invention description and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields, is included in the scope of protection of the present invention.

Claims

1. A wind power generation device with a heat dissipation system, comprising a nacelle (1) and blades (2), wherein a generator and a gearbox (3) are arranged inside the nacelle (1), characterized in that: The wind power generation equipment (100) with a heat dissipation system further comprises a heat dissipation system (4), wherein the heat dissipation system (4) comprises: A first heat dissipation module (41), comprising a first heat dissipation component (411) and a recycling pipeline (412), wherein the recycling pipeline (412) comprises an air intake section (4121), a cooling section (4122) and a return section (4123) which are connected in sequence, wherein one end of the air intake section (4121) facing away from the cooling section (4122) is connected to the top wall of the gear box (3), so that the lubricating oil vaporized in the gear box (3) can enter the air intake section (4121) and be discharged from the cooling section (4122). The air intake section (4121) moves to the cooling section (4122), the first heat dissipation component (411) is connected to the cooling section (4122), and is used to reduce the temperature of the cooling section (4122) so that the gaseous lubricating oil in the cooling section (4122) is converted into liquid lubricating oil, and the end of the return section (4123) facing away from the cooling section (4122) is connected to the side wall of the gear box (3), so that the liquid lubricating oil can return to the gear box (3) through the return section (4123); A second heat dissipation module (42), comprising a second heat dissipation assembly (421), a cooling circulation pipeline (422), and an oil pump (423) provided on the cooling circulation pipeline (422); the cooling circulation pipeline (422) comprises an oil inlet section (4221), a heat dissipation section (4222), and an oil return section (4223) which are connected in sequence; an end of the oil inlet section (4221) away from the heat dissipation section (4222) is connected to the gear box (3); The bottom of the gear box (3) is connected to the bottom of the gear box (3), the second heat dissipation component (421) is connected to the heat dissipation section (4222) and is used to reduce the temperature of the heat dissipation section (4222). The end of the oil return section (4223) away from the heat dissipation section (4222) is connected to the gear box (3), and the oil pump (423) is used to drive the lubricating oil flowing into the oil inlet section (4221) to flow through the cooling section (4122) and the oil return section (4223) in sequence and then flow into the gear box (3).

2. The wind power generation device with a heat dissipation system according to claim 1, characterized in that: The cooling section (4122) is arranged in a wave-like and zigzag manner, so that the cooling section (4122) forms a plurality of wave peaks (41221) and a plurality of wave troughs (41222).

3. The wind power generation equipment with a heat dissipation system according to claim 2, characterized in that: The cooling section (4122) floats in the vertical direction, and the recycling pipeline (412) also includes multiple recovery sections (4124). The number of the recovery sections (4124) is the same as that of the troughs (41222) and they are arranged in a one-to-one correspondence. One end of the recovery section (4124) is connected to the trough (41222), and the other end of the recovery section (4124) is connected to the reflux section (4123).

4. The wind power generation equipment with a heat dissipation system according to claim 2, wherein: The first heat dissipation module (41) comprises a first pump body (4111), a first heat dissipation element (4112) and a first heat dissipation pipeline (4113); the first pump body (4111) is arranged on the first heat dissipation pipeline (4113); the first heat dissipation element (4112) is arranged outside the cabin (1); the first heat dissipation pipeline (4113) comprises a first heat exchange section (41131), a first cooling section (41132) and a first connecting section (41133) connecting the first heat exchange section (41131) and the first cooling section (41132); the first heat exchange section (41131) is connected to the cooling section (4122); the cabin (1) is provided with a first through hole corresponding to the first heat dissipation element (4112); the first cooling section (41132) is connected to the first heat dissipation element (4112) through the first through hole.

5. The wind power generation equipment with a heat dissipation system according to claim 4, characterized in that: A plurality of first heat dissipation fins (41121) are provided on a side of the first heat dissipation element (4112) facing away from the first through hole, and the plurality of first heat dissipation fins (41121) extend along the axial direction of the hub connected to the blade (2), so that a first air flow channel (41122) is formed between any two adjacent first heat dissipation fins (41121), and the first air flow channel (41122) extends along the axial direction of the hub connected to the blade (2); And / or, the first heat exchange section (41131) is arranged in a wavy and zigzag manner; And / or, the first cooling section (41132) is arranged in a wave-like and zigzag manner; And / or, the first heat dissipation module (41) further includes a first heat conducting plate (4114), one side of the first heat conducting plate (4114) is connected to the first heat exchange section (41131), and the other side of the first heat conducting plate (4114) is connected to the cooling section (4122).

6. The wind power generation device with a heat dissipation system according to any one of claims 1 to 5, characterized in that: The second heat dissipation assembly (421) comprises a second pump body (4211), a second heat dissipation element (4212) and a second heat dissipation pipeline (4213); the second pump body (4211) is arranged on the second heat dissipation pipeline (4213); the second heat dissipation element (4212) is arranged outside the cabin (1); the second heat dissipation pipeline (4213) comprises a second heat exchange section (42131), a second cooling section (42132) and a second connecting section (42133) connecting the second heat exchange section (42131) and the second cooling section (42132); the second heat exchange section (42131) is connected to the heat dissipation section (4222); the cabin (1) is provided with a second through hole corresponding to the second heat dissipation element (4212); the second cooling section (42132) is connected to the second heat dissipation element (4212) through the second through hole.

7. The wind power generation device with a heat dissipation system according to claim 6, characterized in that: A plurality of second heat dissipation fins (42121) are provided on a side of the second heat dissipation element (4212) facing away from the second through hole, and the plurality of second heat dissipation fins (42121) extend along the axial direction of the hub connected to the blade (2), so that a second air flow channel (42122) is formed between any two adjacent second heat dissipation fins (42121), and the second air flow channel (42122) extends along the axial direction of the hub connected to the blade (2); And / or, the second heat exchange section (42131) is arranged in a wavy and zigzag manner; And / or, the second cooling section (42132) is arranged in a wave-like and zigzag manner; And / or, the second heat dissipation module (42) further includes a second heat conducting plate (424), one side of the second heat conducting plate (424) is connected to the second heat exchange section (42131), and the other side of the second heat conducting plate (424) is connected to the heat dissipation section (4222).

8. The wind power generation device with a heat dissipation system according to any one of claims 1 to 5, characterized in that: The wind power generation equipment (100) with a heat dissipation system further comprises a filter, which is embedded in the reflux section (4123) and is used to filter the lubricating oil in the reflux section (4123).

9. The wind power generation equipment with a heat dissipation system according to claim 8, characterized in that: The filter is detachably connected to the reflux section (4123); one end of the reflux section (4123) is detachably connected to the cooling section (4122), and the other end of the reflux section (4123) is detachably connected to the side wall of the gear box (3).

10. The wind power generation device with a heat dissipation system according to any one of claims 1 to 5, characterized in that: The wind power generation equipment (100) with a heat dissipation system further comprises a circulation fan, which is arranged at an end of the air intake section (4121) away from the cooling section (4122), the air intake side of the circulation fan facing the inside of the gear box (3), and the air outlet side of the circulation fan facing the air intake section (4121).

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