Gear box of wind generating set and radiator device of gear box

Abstract

The invention relates to the technical field of fan radiating devices, and provides a wind generating set gearbox and gearbox radiator device which comprises an oil outlet pipe and an oil return pipe and further comprises an oil distribution tank and an oil collection tank, the oil outlet pipe is communicated with the oil distribution tank, and the oil return pipe is communicated with the oil collection tank; the two ends of the heat conduction pipe communicate with the oil distribution tank and the oil collection tank correspondingly, and the heat conduction pipe is provided with a plurality of heat dissipation cavities which are evenly arranged at intervals in a surrounding mode and are of a cylindrical structure to form the heat dissipation cavities; the heat dissipation ring piece is arranged in the heat dissipation cavity, and the outer circle face of the heat dissipation ring piece is connected with the heat conduction pipe; the water collection tank is arranged on the upper side of the heat conduction pipe, and the water collection tank is provided with a drainage pipe connected with the heat dissipation ring pieces; and the cleaning and scraping rotor assembly is arranged in the heat conduction pipe and the heat dissipation ring piece, the water drainage pipe discharges water to the heat dissipation ring piece, and the cleaning and scraping rotor assembly rotates to scrape and wipe the heat dissipation ring piece. By intermittently spraying water to the heat dissipation ring pieces, the heat dissipation effect of the gearbox is improved under the high-temperature condition.

Description

Technical Field

[0001] The present invention relates to the technical field of fan heat dissipation devices, and in particular to a wind turbine gear box and a gear box heat sink device. Background Art

[0002] A wind turbine is a device that converts wind energy into electrical energy. Doubly-fed asynchronous wind turbines are one of the most widely used wind turbines. In order to ensure that the generator speed meets the requirements, a gearbox needs to be installed between the generator and the impeller to convert the kinetic energy of low speed into kinetic energy of high speed. Heat is generated during the meshing and rotation of the gears, causing the temperature inside the gearbox to rise. Therefore, a radiator is needed to dissipate heat for the gearbox.

[0003] However, the existing gearbox radiators are mostly placed in the open air and exposed to the air for air cooling. However, in the high temperature environment in summer, the external air temperature is too high, and the gearbox generates more heat, and the radiator bears greater heat dissipation pressure. In addition, in a dusty environment, the fins of the radiator are attached with dust, which will also reduce the heat dissipation effect, causing the wind turbine to operate at limited load or even trip, causing economic losses to the wind farm. Therefore, a radiator device is designed to improve the heat dissipation effect of the wind turbine gearbox in a high temperature environment. Summary of the invention

[0004] The object of the present invention is to provide a wind turbine gearbox and a gearbox radiator device, which can improve the heat dissipation effect at high temperatures.

[0005] The present invention is achieved through the following technical solutions: a gear box radiator device, including an oil outlet pipe and an oil return pipe, and also including an oil distribution tank and an oil collecting tank, one end of the oil outlet pipe is connected to the oil distribution tank, and the oil return pipe is connected to the oil collecting tank; a heat conducting pipe, both ends of which are respectively connected to the oil distribution tank and the oil collecting tank, and the heat conducting pipe is provided with a plurality of cylindrical structures arranged around the heat conducting pipe at even intervals to form a heat dissipation cavity; a heat dissipation ring sheet, which is arranged inside the heat dissipation cavity, and the outer circumferential surface of the heat dissipation ring sheet is connected to the heat conducting pipe; a water collecting box, which is arranged on the upper side of the heat conducting pipe, and the water collecting box is provided with a drain pipe connected to the heat dissipation ring sheet; a scraping rotor assembly, which is arranged inside the heat conducting pipe and the heat dissipation ring sheet, the drain pipe discharges water to the heat dissipation ring sheet, and the scraping rotor assembly rotates to scrape the heat dissipation ring sheet.

[0006] Furthermore, the scraper rotor assembly includes a rod shaft, an impeller and a brush plate, the rod shaft is respectively connected to the middle part of the oil separation tank and the oil collecting tank; the impeller is rotatably connected to the rod shaft, the brush plate is installed on the outer ring of the impeller, and the brush plate is in contact with the heat dissipation ring plate.

[0007] Furthermore, the brush plate is a strip-shaped structure, and is provided with at least two groups of brush plates evenly spaced around the outer circle of the impeller, and the brush plate remains parallel to the rod axis.

[0008] Furthermore, the drain pipe passes through the top of the heat dissipation ring sheet, and the water outlet of the drain pipe is a conical hole, and a blocking ball is stuck at the water outlet of the drain pipe.

[0009] Furthermore, the heat dissipation ring sheets are provided in multiple groups and are evenly spaced along the length direction of the heat conducting tube.

[0010] Furthermore, it also includes a gear pump, which is connected to the oil outlet pipe; it also includes a driving pulley and a driven pulley, the driving pulley is installed on the main shaft of the fan, and a transmission belt is connected between the driving pulley and the driven pulley. The gear pump includes a cavity and a pumping gear, and one of the pumping gears is coaxially connected to the driven pulley.

[0011] Furthermore, filter screens are installed at both ends of the heat conduction pipe, and the water collecting tank is installed on the top of the two filter screens.

[0012] Furthermore, the heat conducting pipe is a bent structure.

[0013] A wind turbine gearbox includes the above-mentioned gearbox radiator device, and also includes a distribution box and an oil pool. The oil pool is arranged at the lower end of the gearbox body and is connected to the oil outlet pipe. The distribution box is arranged at the top of the gearbox body and is connected to the oil return pipe.

[0014] The technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects:

[0015] 1. The oil is cooled by absorbing heat through air cooling and water evaporation. The brush plate rotates to evenly spread the water on the heat dissipation ring. The heat dissipation ring is also cleaned by water spraying, which improves its heat dissipation capacity.

[0016] 2. The water used for heat dissipation is collected through rain, and the impeller is driven by wind to achieve automatic operation;

[0017] 3. While the gearbox is running, the fan main shaft drives the gear pump to automatically realize the oil heat dissipation circulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic diagram of the structure of a gearbox heat dissipation device provided in an embodiment of the present invention;

[0020] Figure 2 It is a schematic diagram of the matching structure of the scraper rotor assembly and the heat conducting pipe in the present invention;

[0021] Figure 3 It is a schematic diagram of the connection structure between the gear box body and the radiator device;

[0022] Figure 4 It is a power connection diagram of the gear box body and the radiator device in the present invention;

[0023] Figure 5 It is a schematic diagram of the connection between the heat transfer pipe and the scraper rotor assembly;

[0024] Figure 6 It is a schematic diagram of the connection structure between the drain pipe and the heat dissipation ring sheet in the present invention.

[0025] Icons: 1- oil distribution tank, 2- oil collecting tank, 3- heat conduction pipe, 4- heat dissipation ring, 5- water collecting tank, 6- drain pipe, 61- blocking ball, 7- scraping rotor assembly, 71- brush plate, 72- impeller, 73- rod shaft, 8- gear box body, 9- gear pump, 91- pump gear, 92- cavity, 10- driving pulley, 11- driven pulley, 12- transmission belt, 13- oil outlet pipe, 14- oil return pipe, 15- filter screen, 16- distribution box, 17- oil pool. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0029] Embodiment 1:

[0030] The following is further described in conjunction with specific embodiments. Figure 1-Figure 6 As shown, the present embodiment is a gearbox radiator device, including an oil outlet pipe 13 and an oil return pipe 14, and also including an oil separator 1 and an oil collecting tank 2, one end of the oil outlet pipe 13 is connected to the oil separator 1, and the oil return pipe 14 is connected to the oil collecting tank 2; a heat conducting pipe 3, both ends of which are respectively connected to the oil separator 1 and the oil collecting tank 2, and the heat conducting pipe 3 is provided with a plurality of cylindrical structures arranged around and evenly spaced to form a heat dissipation cavity; a heat dissipation ring sheet 4, which is arranged inside the heat dissipation cavity, and the outer circumferential surface of the heat dissipation ring sheet 4 is connected to the heat conducting pipe 3; a water collecting box 5, which is arranged on the upper side of the heat conducting pipe 3, and the water collecting box 5 is provided with a drain pipe 6 connected to the heat dissipation ring sheet 4; a scraping rotor assembly 7, which is arranged inside the heat conducting pipe 3 and the heat dissipation ring sheet 4, the drain pipe 6 discharges water to the heat dissipation ring sheet 4, and the scraping rotor assembly 7 rotates to scrape the heat dissipation ring sheet 4; specifically, the radiator device is arranged outside and exposed to the air, and the oil in the gearbox absorbs heat and is discharged through the outlet The oil pipe 13 flows into the oil distribution tank 1, and then is distributed by the oil distribution tank 1 to multiple slender heat-conducting pipes 3 to increase the heat dissipation area with the air. The heat dissipating ring sheet 4 is connected in series with the heat-conducting pipe 3. Its structure is flat and has a large heat dissipation area. The heat in the heat-conducting pipe 3 can be transferred to the heat dissipating ring sheet 4, and daily rainfall can be collected in the water collecting tank 5 for backup. The water collecting tank 5 is equipped with a one-way valve to prevent evaporation. The water collecting tank 5 intermittently sprays water on the heat dissipating ring sheet 4 through multiple drainage pipes 6, and cooperates with the cleaning rotor assembly 7 to scrape the water evenly on the heat dissipating ring sheet 4, which not only cleans the dust on the heat dissipating ring sheet 4, but also makes the heat dissipation function of the heat dissipating ring sheet 4 normal, and the water evaporates and absorbs heat after being evenly spread on the heat dissipating ring sheet 4, which reduces the temperature of the heat dissipating ring sheet 4 and takes away most of the heat. The oil after the oil temperature is reduced flows into the oil collecting tank 2 and then flows back to the gear box body 8 through the return oil pipe 14, so that it still has a good heat dissipation effect under the condition of high outdoor temperature.

[0031] It is worth noting that the wall of the water collecting tank 5 is provided with thermal insulation material to reduce the influence of the outside on the water temperature.

[0032] Reference Figure 2 and Figure 5 As shown, the scraper rotor assembly 7 in this embodiment includes a rod shaft 73, an impeller 72 and a brush plate 71, and the rod shaft 73 is respectively connected to the middle part of the oil separation tank 1 and the oil collection tank 2; the impeller 72 is rotatably connected to the rod shaft 73, and the brush plate 71 is installed on the outer ring of the impeller 72, and the brush plate 71 is in contact with the heat dissipation ring sheet 4; specifically, when the fan is running, there is a certain wind force outside, and the operation of the gear box is correspondingly increased, thereby increasing the heat generation, and the external wind force drives the impeller 72 to rotate. The setting direction of the impeller 72 is consistent with the direction of the fan blades. The wind drives the impeller 72 to rotate so that the brush plate 71 is in contact with the heat dissipation ring sheet 4. While the wind takes away part of the heat, it also promotes the evaporation of water on the heat dissipation ring sheet 4 and absorbs heat.

[0033] More preferably, the brush plate 71 is a strip structure, and the brush plate 71 has at least two groups of evenly spaced brush plates around the outer circle of the impeller 72, and the brush plate 71 is parallel to the rod shaft 73, and the brush plate 71 can contact and act with multiple heat dissipation ring sheets 4.

[0034] like Figure 5 and Figure 6 As shown, the drain pipe 6 in this embodiment passes through the top of the heat dissipation ring plate 4, and the water outlet of the drain pipe 6 is a conical hole, and a blocking ball 61 is stuck at the water outlet of the drain pipe 6; specifically, a part of the blocking ball 61 protrudes from the surface of the heat dissipation ring plate 4, and when the brush plate 71 rotates to the drain pipe 6, the blocking ball 61 can be pushed in, so that the water outflowing from the drain pipe 6 is absorbed by the bristles of the brush plate 71, which can avoid the waste caused by continuous water outflow from the drain pipe 6, and when the brush plate 71 leaves, the water impact force and the gravity of the blocking ball 61 will automatically block the water outlet.

[0035] More preferably, in order to improve the heat dissipation effect, a plurality of heat dissipation ring sheets 4 are arranged evenly spaced along the length direction of the heat conducting tube 3; specifically, the heat dissipation ring sheets 4 are located at different positions of the heat conducting tube 3, and the heat dissipation ring sheets 4 near one end of the oil inlet pipe are relatively high, where the water output of the drain pipe 6 can be increased.

[0036] Reference Figure 3 and Figure 4 As shown, the present embodiment also includes a gear pump 9, which is connected to an oil outlet pipe 13; it also includes a driving pulley 10 and a driven pulley 11, the driving pulley 10 is mounted on the fan main shaft, a transmission belt 12 is connected between the driving pulley 10 and the driven pulley 11, the gear pump 9 includes a cavity 92 and a pumping gear 91, one of the pumping gears 91 is coaxially connected to the driven pulley 11; specifically, when the external wind force is large, the gear box body 8 of the fan and the fan main shaft are both in operation, which provides power to the pumping gear 91 of the gear pump 9 through the fan main shaft, thereby realizing the self-circulation of oil in the oil outlet pipe 13, the oil return pipe 14, the gear box body 8 and the radiator device for heat dissipation and cooling.

[0037] In order to reduce the adhesion of large dust, filter screens 15 are installed at both ends of the heat conduction pipe 3 , and the water collecting box 5 is installed on the top of the two filter screens 15 .

[0038] In order to expand the size of the heat dissipation cavity formed in the heat pipe 3 , the heat pipe 3 is designed to have a bent structure.

[0039] Embodiment 2:

[0040] Reference Figure 4As shown, a wind turbine gearbox includes the above-mentioned gearbox radiator device, and also includes a distribution box 16 and an oil pool 17. The oil pool 17 is arranged at the lower end of the gearbox body 8, and the oil pool 17 is connected to the oil outlet pipe 13. The distribution box 16 is arranged at the top of the gearbox body 8 and is connected to the oil return pipe 14.

[0041] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A gearbox radiator device, comprising an oil outlet pipe (13) and an oil return pipe (14), characterized in that: It also includes an oil separation tank (1) and an oil collection tank (2), one end of the oil outlet pipe (13) is connected to the oil separation tank (1), and the oil return pipe (14) is connected to the oil collection tank (2); A heat conducting pipe (3), both ends of which are respectively connected to the oil separation tank (1) and the oil collection tank (2); a plurality of heat conducting pipes (3) are arranged evenly around the heat conducting pipes to form a cylindrical structure to form a heat dissipation cavity; A heat dissipation ring sheet (4) is arranged inside the heat dissipation cavity, and the outer circumferential surface of the heat dissipation ring sheet (4) is connected to the heat conducting pipe (3); A water collecting box (5) is arranged on the upper side of the heat conducting pipe (3), and the water collecting box (5) is provided with a drainage pipe (6) connected to the heat dissipation ring sheet (4); A scraping rotor assembly (7) is arranged inside the heat conducting pipe (3) and the heat dissipation ring sheet (4); the water discharge pipe (6) discharges water to the heat dissipation ring sheet (4); and the scraping rotor assembly (7) rotates to scrape the heat dissipation ring sheet (4).

2. The gearbox radiator device according to claim 1, characterized in that: The scraper rotor assembly (7) comprises a rod shaft (73), an impeller (72) and a brush plate (71), wherein the rod shaft (73) is respectively connected to the middle of the oil separation tank (1) and the oil collection tank (2); The impeller (72) is rotationally connected to the rod shaft (73), the brush plate (71) is mounted on the outer ring of the impeller (72), and the brush plate (71) is in contact with the heat dissipation ring sheet (4).

3. The gearbox radiator device according to claim 2, characterized in that: The brush plate (71) is a strip-shaped structure, and the brush plate (71) is provided with at least two groups of brush plates evenly spaced around the outer circle of the impeller (72), and the brush plate (71) remains parallel to the rod shaft (73).

4. The gearbox radiator device according to claim 3, characterized in that: The drain pipe (6) passes through the top of the heat dissipation ring sheet (4), and the water outlet of the drain pipe (6) is a conical hole. A blocking ball (61) is stuck at the water outlet of the drain pipe (6).

5. The gearbox radiator device according to claim 1, characterized in that: The heat dissipation ring sheets (4) are provided in multiple groups and are evenly spaced and arranged along the length direction of the heat conducting pipe (3).

6. The gearbox radiator device according to claim 1, characterized in that: It also includes a gear pump (9), wherein the gear pump (9) is connected to the oil outlet pipe (13).

7. The gearbox radiator device according to claim 6, characterized in that: It also includes a driving pulley (10) and a driven pulley (11), wherein the driving pulley (10) is mounted on the main shaft of the fan, and a transmission belt (12) is connected between the driving pulley (10) and the driven pulley (11). The gear pump (9) includes a cavity (92) and a pumping gear (91), wherein the pumping gear (91) is coaxially connected to the driven pulley (11).

8. The gearbox radiator device according to claim 1, characterized in that: Filter screen plates (15) are installed at both ends of the heat conduction pipe (3), and the water collecting box (5) is installed on the top of the two filter screen plates (15).

9. The gearbox radiator device according to claim 1, characterized in that: The heat conducting pipe (3) is a bent structure.

10. A wind turbine gearbox, comprising the gearbox radiator device according to any one of claims 1 to 9, characterized in that: The gear box also includes a distribution box (16) and an oil pool (17). The oil pool (17) is arranged at the lower end of the gear box body (8), and the oil pool (17) is connected to the oil outlet pipe (13). The distribution box (16) is arranged at the top of the gear box body (8) and is connected to the oil return pipe (14).

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