Radiator of wind power generation gearbox

Abstract

The utility model provides a wind power generation gear case radiator, including heat dissipation subassembly, heat dissipation subassembly includes box body, door body, gear pump, first pipe body, second pipe body, filter mechanism, heat dissipation mechanism, first check valve and third pipe body, door body hinge joint is in the front surface of box body, door body and box body lock joint; the gear pump is arranged on the bottom wall of the inner side of the box body, the bottom end of the third pipe body is arranged at a liquid inlet of the gear pump, and the top end of the third pipe body penetrates through the box body; the heat dissipation blocks and the corrugated radiator are combined for use to enhance heat dissipation, the corrugated radiator is corrugated and large in tooth pitch, so that blockage of sundries such as catkins can be effectively prevented, the catkins and the catkins are not easy to remain in the radiator, the service life of the radiator is longer, the maintenance cost is lower, and the service life of the radiator is prolonged. The purpose of effectively discharging the heat of the radiator is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation gear box radiators, in particular to a wind power generation gear box radiator. Background Art

[0002] In recent years, with the rapid development of the wind power industry, China's installed wind power capacity has seen a dramatic increase. Doubly-fed (DFIG) wind turbines dominate the market, and the condition of their gearboxes directly impacts their proper operation. Especially in spring and summer, high gearbox oil temperatures can lead to power throttling and shutdowns, a significant problem that plagues wind farms and severely impacts both power generation and profitability.

[0003] The main reasons for the high oil temperature of the gearbox are analyzed as follows:

[0004] (1) Air cooling radiator is blocked

[0005] The air-cooled radiator is the gearbox's cooling unit. Gear oil flows through the radiator, where the wind from the oil-cooling fan creates an oil-to-air heat exchange mechanism, removing heat from the gear oil. Wind turbines operate in harsh environmental conditions. During the spring-summer transition, blowing sand, poplar fluff, and rain all affect the radiator's proper functioning. This often leads to the accumulation of a mixture of dust and fluff on the radiator's surface, impairing heat exchange efficiency and causing high oil temperatures.

[0006] (2) Temperature control valve failure

[0007] The gearbox lubrication and cooling circuit relies on a thermostatic valve to distribute the lubricating oil to the cooling circuit. A bulb inside the valve core senses temperature, opening or shutting off the oil flow. Due to the poor reliability of the bulb, its lifespan is difficult to predict, ranging from two years to six months. Some wind farms experience valve core failure after just six months of use. Furthermore, the valve core and body of the thermostatic valve utilize a sliding valve structure, resulting in poor sealing and leakage in some components, making it difficult to ensure complete sealing. The flow diversion of the thermostatic valve directly affects the gear oil cooling flow rate, and cooling power is proportional to flow rate. If the thermostatic valve malfunctions, the cooling system will inevitably fail. Consequently, a thermostatic valve failure can lead to excessively high system oil temperatures, causing the wind turbine to operate at limited power or even shut down. Therefore, a wind turbine gearbox radiator is proposed. Utility Model Content

[0008] In view of this, the embodiments of the present invention hope to provide a wind power generation gearbox radiator to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0009] The technical solution of the embodiment of the utility model is achieved as follows: A wind power gearbox radiator includes a heat dissipation assembly, which includes a box body, a door body, a gear pump, a first tube body, a second tube body, a filtering mechanism, a heat dissipation mechanism, a first one-way valve and a third tube body, wherein the door body is hinged to the front surface of the box body, and the door body is locked and connected to the box body; the gear pump is arranged on the inner bottom wall of the box body, and the bottom end of the third tube body is arranged at the liquid inlet of the gear pump, and the top end of the third tube body passes through the box body; one end of the first tube body is arranged at the liquid outlet of the gear pump, and one end of the second tube body passes through the first tube body and is fixedly connected; the other end of the second tube body passes through the box body, and the first one-way valve passes through the box body; the filtering mechanism is arranged at the other end of the first tube body, and the filtering mechanism is respectively arranged on the box body and the heat dissipation mechanism; the heat dissipation mechanism is arranged on the box body.

[0010] In some embodiments, the filtering mechanism includes a fourth tube body, a fifth tube body, a first filter element, a second filter element, two sixth tube bodies, a U-shaped tube body, a second one-way valve, a pressure differential sensor and a pressure control valve; the first filter element is arranged at the other end of the first tube body, and one end of the fifth tube body is arranged on the first filter element; the second filter element is arranged at the other end of the fifth tube body, and one end of the fourth tube body is arranged on the second filter element; the other end of the fourth tube body passes through the box body, and the pressure control valve is arranged on the outer wall of the fourth tube body, and the heat dissipation mechanism is arranged at On the fourth tube body; the two sixth tube bodies respectively penetrate the first tube body and the fourth tube body, and the two sixth tube bodies are respectively fixedly connected to the first tube body and the fourth tube body, and the two sixth tube bodies are respectively communicated with the interior of the first tube body and the fourth tube body; the U-shaped tube body respectively penetrates the first tube body and the fifth tube body, and the U-shaped tube body is respectively fixedly connected to the first tube body and the fifth tube body, and the U-shaped tube body is respectively communicated with the interior of the first tube body and the fifth tube body; the second one-way valve is arranged on the outer wall of the U-shaped tube body.

[0011] In some embodiments, the heat dissipation mechanism includes a heat dissipation block, two seventh tubes, a square ring body, a mounting frame, a servo motor, a rotating rod, a plurality of fan blades and a corrugated radiator, wherein the heat dissipation block is arranged on the inner bottom wall of the box body, and a wave channel is opened on the upper surface of the heat dissipation block; one end of the two seventh tubes passes through the fourth tube body, and the two seventh tubes are fixedly connected to the fourth tube body, and the two seventh tubes are connected to the inside of the fourth tube body; the other end of the two seventh tubes passes through the heat dissipation block, and the two seventh tubes are connected to the heat dissipation block. The block is fixedly connected, and the two seventh tubes are communicated with the interior of the heat dissipation block; the corrugated radiator is arranged on the upper surface of the heat dissipation block, and the corrugated radiator is fixedly connected to the heat dissipation block; the square ring body is arranged on the inner wall of the box body, and the mounting bracket is arranged on the inner wall of the square ring body; the servo motor is arranged on the outer wall of the mounting bracket, and the output shaft of the servo motor passes through the mounting bracket and is arranged at one end of the rotating rod; one end of the rotating rod is rotatably connected to the outer wall of the mounting bracket, and a plurality of the fan blades are evenly arranged on the outer wall of the rotating rod.

[0012] In some embodiments, the mesh size of the first filter element is 10 μm, and the mesh size of the second filter element is 50 μm.

[0013] In some embodiments, two filter screens are symmetrically passed through the outer wall of the box body, and the box body is fixedly connected to the filter screens.

[0014] In some embodiments, the front surface of the door body is respectively provided with a sub-buckle and a handle, and the front surface of the box body is provided with a female buckle, and the sub-buckle and the female buckle are adapted to each other.

[0015] The embodiment of the present invention has the following advantages due to the adoption of the above technical solution:

[0016] 1. The utility model is used to enhance heat dissipation through the combined use of a heat dissipation block and a corrugated radiator. Since the corrugated radiator is corrugated and has a relatively large tooth pitch, it can effectively prevent clogging by debris such as catkins, and catkins, willow catkins, etc. are not easy to remain in the radiator, thereby extending the life of the radiator and reducing maintenance costs, thereby achieving the purpose of effectively discharging heat from the radiator.

[0017] Second, the utility model uses a pressure control valve to control the flow direction of the gear oil. Due to the different oil temperatures of the gear oil, the pressure of the gear oil is different, which makes it easy to control the flow direction of the gear oil and solves the problem of easy failure of the temperature control valve.

[0018] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application 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 application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 This is a side view of the structure of the utility model;

[0022] Figure 3 For this utility model Figure 2 AA side cross-sectional structure diagram;

[0023] Figure 4 For this utility model Figure 3 A magnified structural diagram of area B;

[0024] Figure 5 For this utility model Figure 3 The enlarged structure diagram of the C region;

[0025] Figure 6 For this utility model Figure 3 A magnified structural diagram of the D region;

[0026] Figure 7 For this utility model Figure 2 EE side section structure diagram.

[0027] Figure numerals: 1. heat dissipation assembly; 2. male buckle; 3. female buckle; 4. handle; 5. filter; 6. wave channel; 10. box body; 11. door body; 12. gear pump; 13. first tube body; 14. second tube body; 15. filter mechanism; 16. heat dissipation mechanism; 17. first one-way valve; 18. third tube body; 150. fourth tube body; 151. fifth tube body; 152. first filter element; 153. second filter element; 154. sixth tube body; 155. U-shaped tube body; 156. second one-way valve; 157. differential pressure sensor; 158. pressure control valve; 160. heat dissipation block; 161. seventh tube body; 162. square ring body; 163. mounting bracket; 164. servo motor; 165. rotating rod; 166. fan blade; 167. corrugated radiator. DETAILED DESCRIPTION

[0028] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0029] It should be noted that the terms "first," "second," "symmetrical," "array," etc. are used only to distinguish descriptions from positional descriptions and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, limitations on features such as "first" and "symmetrical" may explicitly or implicitly include one or more of these features; similarly, when the number of certain features is not limited in the form of words such as "two" or "three," it should be noted that these features also explicitly or implicitly include one or more of the number of features.

[0030] In the present invention, unless otherwise expressly specified or limited, terms such as "installation," "connection," and "fixation" should be understood broadly; for example, they may refer to fixed connection, detachable connection, or integral molding; they may refer to mechanical connection, direct connection, welding, or indirect connection through an intermediate medium; they may refer to internal communication between two components or interaction between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on the specification and drawings in conjunction with specific circumstances.

[0031] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0032] like Figure 1-Figure 7 As shown, the embodiment of the present invention provides a wind power generation gear box radiator, including a heat dissipation component 1, the heat dissipation component 1 includes a box body 10, a door body 11, a gear pump 12, a first pipe body 13, a second pipe body 14, a filtering mechanism 15, a heat dissipation mechanism 16, a first one-way valve 17 and a third pipe body 18, wherein the door body 11 is hinged to the front surface of the box body 10, and the door body 11 is locked and connected to the box body 10, the gear pump 12 is arranged on the inner bottom wall of the box body 10, and the bottom end of the third pipe body 18 is provided with a It is placed at the liquid inlet of the gear pump 12, the top of the third tube body 18 passes through the box body 10, one end of the first tube body 13 is set at the liquid outlet of the gear pump 12, one end of the second tube body 14 passes through the first tube body 13 and is fixedly connected, the other end of the second tube body 14 passes through the box body 10, and the first one-way valve 17 passes through the box body 10, the filtering mechanism 15 is set at the other end of the first tube body 13, and the filtering mechanism 15 is respectively set on the box body 10 and the heat dissipation mechanism 16, and the heat dissipation mechanism 16 is set on the box body 10.

[0033] In this embodiment, specifically, the filtering mechanism 15 includes a fourth tube body 150, a fifth tube body 151, a first filter element 152, a second filter element 153, two sixth tube bodies 154, a U-shaped tube body 155, a second one-way valve 156, a pressure differential sensor 157 and a pressure control valve 158. The first filter element 152 is arranged at the other end of the first tube body 13, and one end of the fifth tube body 151 is arranged on the first filter element 152, the second filter element 153 is arranged at the other end of the fifth tube body 151, and one end of the fourth tube body 150 is arranged on the second filter element 153. The other end of the fourth tube body 150 passes through the box body 10, and the pressure control valve 158 is arranged on the outer wall of the fourth tube body 150. The heat dissipation mechanism 16 is arranged on the fourth tube body 150. The two sixth tube bodies 154 respectively pass through the first tube body 13 and the fourth tube body 150, and the two sixth tube bodies 154 are fixedly connected to the first tube body 13 and the fourth tube body 150, respectively. The two sixth tubes 154 are respectively connected to the interiors of the first tube 13 and the fourth tube 150. The U-shaped tube 155 passes through the first tube 13 and the fifth tube 151 respectively, and is fixedly connected to the first tube 13 and the fifth tube 151 respectively. The U-shaped tube 155 is respectively connected to the interiors of the first tube 13 and the fifth tube 151. The second one-way valve 156 is provided on the outer wall of the U-shaped tube 155. Through the above arrangement, when the gear oil temperature is low or the pressure difference of the first tube 13 is greater than 4 bar, the second one-way valve 156 is opened, and the gear oil in the first tube 13 is transferred to the fifth tube 151 through the U-shaped tube 155, and is only coarsely filtered by the 50μm second filter element 153. When the gear oil temperature gradually increases and the pressure difference of the first tube 13 is lower than 4 bar, the gear oil is filtered through the 10μm first filter element 152 and the 50μm second filter element 153.

[0034] In this embodiment, specifically, the heat dissipation mechanism 16 includes a heat dissipation block 160, two seventh tubes 161, a square ring 162, a mounting frame 163, a servo motor 164, a rotating rod 165, a plurality of fan blades 166 and a corrugated radiator 167, wherein the heat dissipation block 160 is arranged on the inner bottom wall of the box body 10, and the upper surface of the heat dissipation block 160 is provided with a wave channel 6, one end of the two seventh tubes 161 both penetrate the fourth tube 150, and the two seventh tubes 161 The second tube body 161 is fixedly connected to the fourth tube body 150, and the other ends of the second tube bodies 161 pass through the heat dissipation block 160, and the second tube bodies 161 are fixedly connected to the heat dissipation block 160. The second tube bodies 161 are connected to the interior of the heat dissipation block 160, and the corrugated heat sink 167 is provided on the upper surface of the heat dissipation block 160, and the corrugated heat sink 167 is fixedly connected to the heat dissipation block 160. The square ring body 162 is provided on the The inner wall of the box body 10, and the mounting bracket 163 is arranged on the inner wall of the square ring body 162, the servo motor 164 is arranged on the outer wall of the mounting bracket 163, the output shaft of the servo motor 164 passes through the mounting bracket 163 and is arranged at one end of the rotating rod 165, one end of the rotating rod 165 is rotatably connected to the outer wall of the mounting bracket 163, and a plurality of fan blades 166 are evenly arranged on the outer wall of the rotating rod 165. Through the above setting, the servo motor 164 starts to work, the output shaft of the servo motor 164 drives the rotating rod 165 to rotate, and the rotating rod 165 drives the plurality of fan blades 166 to rotate, and then the external gas is drawn into the box body 10 through the filter 5 to dissipate heat to the corrugated radiator 167, and the gear oil in the fourth tube body 150 is transmitted to the wave channel 6 on the heat dissipation block 160 through one of the seventh tube bodies 161. The gear oil in the wave channel 6 is dissipated through the corrugated radiator 167 and then transmitted to the fourth tube body 150 through the other seventh tube body 161.

[0035] In this embodiment, specifically, the mesh size of the first filter element 152 is 10 μm, and the mesh size of the second filter element 153 is 50 μm.

[0036] In this embodiment, specifically, two filters 5 are symmetrically passed through the outer wall of the box body 10, and the box body 10 is fixedly connected to the filter screens 5. The above arrangement of the filter screens 5 facilitates the entry of external gas into the interior of the box body 10 and reduces the entry of dust.

[0037] In this embodiment, specifically, the front surface of the door body 11 is respectively provided with a sub-buckle 2 and a handle 4, and the front surface of the box body 10 is provided with a female buckle 3. The sub-buckle 2 and the female buckle 3 are adapted to each other. Through the above settings, the relevant personnel releases the sub-buckle 2 from the female buckle 3, and the relevant personnel holds the handle 4 to drive the door body 11 to open.

[0038] During operation of the present invention, when the gear box needs lubrication, the oil pump motor starts, driving the gear pump 12 to work, pumping the gear oil in the oil pool into the first pipe body 13. The pressure of the first one-way valve 17 is 12 bar. When the gear oil pressure in the first pipe body 13 exceeds 12 bar, the first one-way valve 17 opens, and the gear oil directly returns to the oil pool through the second pipe body 14 to protect other components of the system.

[0039] When the gear oil temperature is low or the pressure difference of the first tube body 13 is greater than 4 bar, the second one-way valve 156 opens, and the gear oil in the first tube body 13 is transferred to the fifth tube body 151 through the U-shaped tube body 155 and is only coarsely filtered by the 50μm second filter element 153.

[0040] When the temperature of the gear oil gradually increases and the pressure difference of the first tube body 13 is lower than 4 bar, the gear oil is filtered in two stages by passing through the first filter element 152 with a diameter of 10 μm and the second filter element 153 with a diameter of 50 μm.

[0041] When the gear oil temperature is lower than 30°C, the alarm signal of the differential pressure sensor 157 is invalid. When the gear oil temperature exceeds 30°C and the pressure difference reaches 3 bar, the alarm signal of the differential pressure sensor 157 is valid. The first filter element 152 and the second filter element 153 must be replaced within two days.

[0042] When the gear oil temperature reaches 55°C and the gear oil pressure is less than 6 bar, the servo motor 164 starts to work, and the output shaft of the servo motor 164 drives the rotating rod 165 to rotate, and the rotating rod 165 drives several fan blades 166 to rotate, and then the external gas is drawn into the box body 10 through the filter screen 5 to dissipate heat to the corrugated radiator 167. The gear oil in the fourth tube body 150 is transmitted to the wave channel 6 on the heat dissipation block 160 through one of the seventh tube bodies 161. The gear oil in the wave channel 6 is cooled by the corrugated radiator 167 and then transmitted to the fourth tube body 150 through the other seventh tube body 161.

[0043] When the gear oil temperature drops to 50° C., the gear oil pressure is greater than 6 bar, the servo motor 164 automatically stops working, and the gear oil directly returns to the gear box through the pressure control valve 158 and the fourth pipe body 150 for forced lubrication.

[0044] When the pressure difference of the cooler reaches 6 bar, the pressure control valve 158 opens and the gear oil flows directly into the gear box without passing through the radiator.

[0045] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope of protection of the claims.

Claims

1. A wind power generation gearbox radiator, comprising a heat dissipation component (1), characterized in that: The heat dissipation assembly (1) comprises a box body (10), a door body (11), a gear pump (12), a first pipe body (13), a second pipe body (14), a filtering mechanism (15), a heat dissipation mechanism (16), a first one-way valve (17) and a third pipe body (18), wherein: The door body (11) is hinged to the front surface of the box body (10), and the door body (11) is locked and connected to the box body (10); The gear pump (12) is arranged on the inner bottom wall of the box body (10), and the bottom end of the third tube body (18) is arranged at the liquid inlet of the gear pump (12), and the top end of the third tube body (18) passes through the box body (10); One end of the first tube body (13) is arranged at the liquid outlet of the gear pump (12), and one end of the second tube body (14) passes through the first tube body (13) and is fixedly connected; The other end of the second tube (14) passes through the box (10), and the first one-way valve (17) passes through the box (10); The filtering mechanism (15) is arranged at the other end of the first tube (13), and the filtering mechanism (15) is respectively arranged on the box (10) and the heat dissipation mechanism (16); The heat dissipation mechanism (16) is arranged on the box body (10).

2. The wind power generation gearbox radiator according to claim 1, characterized in that: The filtering mechanism (15) comprises a fourth tube body (150), a fifth tube body (151), a first filter element (152), a second filter element (153), two sixth tube bodies (154), a U-shaped tube body (155), a second one-way valve (156), a differential pressure sensor (157), and a pressure control valve (158); The first filter element (152) is arranged at the other end of the first tube (13), and one end of the fifth tube (151) is arranged on the first filter element (152); The second filter element (153) is arranged at the other end of the fifth tube (151), and one end of the fourth tube (150) is arranged on the second filter element (153); The other end of the fourth tube (150) passes through the box (10), and the pressure control valve (158) is arranged on the outer wall of the fourth tube (150), and the heat dissipation mechanism (16) is arranged on the fourth tube (150); The two sixth tubes (154) respectively penetrate the first tube (13) and the fourth tube (150), and the two sixth tubes (154) are respectively fixedly connected to the first tube (13) and the fourth tube (150), and the two sixth tubes (154) are respectively communicated with the interior of the first tube (13) and the fourth tube (150); The U-shaped tube body (155) passes through the first tube body (13) and the fifth tube body (151) respectively, and the U-shaped tube body (155) is fixedly connected to the first tube body (13) and the fifth tube body (151) respectively, and the U-shaped tube body (155) is communicated with the interior of the first tube body (13) and the fifth tube body (151) respectively; The second one-way valve (156) is arranged on the outer wall of the U-shaped tube (155).

3. The wind power generation gearbox radiator according to claim 2, characterized in that: The heat dissipation mechanism (16) comprises a heat dissipation block (160), two seventh tubes (161), a square ring body (162), a mounting frame (163), a servo motor (164), a rotating rod (165), a plurality of fan blades (166) and a corrugated heat sink (167), wherein: The heat dissipation block (160) is arranged on the inner bottom wall of the box body (10), and a wave channel (6) is opened on the upper surface of the heat dissipation block (160); One end of each of the two seventh tubes (161) passes through the fourth tube (150), and the two seventh tubes (161) are fixedly connected to the fourth tube (150), and the two seventh tubes (161) are in communication with the interior of the fourth tube (150); The other ends of the two seventh tubes (161) pass through the heat dissipation block (160), and the two seventh tubes (161) are fixedly connected to the heat dissipation block (160), and the two seventh tubes (161) are in communication with the interior of the heat dissipation block (160); The corrugated heat sink (167) is arranged on the upper surface of the heat sink block (160), and the corrugated heat sink (167) is fixedly connected to the heat sink block (160); The square ring body (162) is arranged on the inner wall of the box body (10), and the mounting frame (163) is arranged on the inner wall of the square ring body (162); The servo motor (164) is arranged on the outer wall of the mounting frame (163), and the output shaft of the servo motor (164) passes through the mounting frame (163) and is arranged on one end of the rotating rod (165); One end of the rotating rod (165) is rotatably connected to the outer wall of the mounting frame (163), and a plurality of fan blades (166) are evenly arranged on the outer wall of the rotating rod (165).

4. The wind power generation gearbox radiator according to claim 2, characterized in that: The mesh number of the first filter element (152) is 10 μm, and the mesh number of the second filter element (153) is 50 μm.

5. The wind power generation gearbox radiator according to claim 1, characterized in that: Two filter screens (5) are symmetrically passed through the outer wall of the box body (10), and the box body (10) is fixedly connected to the filter screens (5).

6. The wind power generation gearbox radiator according to claim 1, characterized in that: The front surface of the door body (11) is respectively provided with a sub-buckle (2) and a handle (4), and the front surface of the box body (10) is provided with a female buckle (3), and the sub-buckle (2) and the female buckle (3) are adapted to each other.

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