Cooling device for wind generating set

Abstract

The invention relates to the technical field of wind power generation heat dissipation, in particular to a cooling device for a wind generating set. The heat dissipation system is installed in the cabin shell and used for conducting heat dissipation on gearbox oil; the anti-seismic mounting frame part is used for mounting the heat dissipation system on the top in the cabin shell in a suspension manner and buffering vibration in the operation process of the heat dissipation system through seismic resistance; the condensation part is installed outside the cabin of the wind driven generator through the installation part, cooling is carried out through high-altitude air circulation, a fan is not needed, cost is reduced, meanwhile, many problems of installation of the condenser in the cabin are solved, the service life of the gearbox is prolonged, operation and maintenance cost is reduced, the operation rate of the fan is improved, and the service life of the wind driven generator is prolonged. And power generation efficiency and benefits are improved.

Description

Technical Field

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

[0002] Wind power generation refers to converting the kinetic energy of wind into mechanical energy, and then converting mechanical energy into electrical energy. The principle of wind power generation is to use wind power to drive the windmill blades to rotate, and then increase the rotation speed through the gear box to drive the generator to generate electricity;

[0003] As the temperature rises, the gearboxes of most units begin to overheat even when the wind speed is 7-8 m / s. The failure caused by the overheating of the gearbox makes the operation and maintenance personnel exhausted, the unit availability is very low, and the high failure rate causes a large loss of electricity and benefits.

[0004] To solve the problem of gearbox overheating, most of them use HYDAC lubrication system. The radiator assembly of HYDAC lubrication system is designed for the mechanical efficiency of foreign gearboxes, and the reference ambient temperature is generally 35℃, and the limit is not more than 40℃. However, the actual cabin ambient temperature has reached 45℃, which is far from meeting the heat dissipation requirements of the gearbox.

[0005] Secondly, in the fan use environment, there are a lot of catkins, poplars and dust in the air, and the air entering the cabin cannot be effectively filtered. Under the action of the radiator fan, the cabin has negative pressure, and a large amount of flying catkins and poplar dust gather and adhere to the radiator surface and the air duct. Due to the structural characteristics of the radiator air duct, catkins and poplars cannot pass through these air ducts and are directly stuck in the air duct. The gearbox oil temperature is high, and a large number of free oil molecules in the cabin form "oil smoke". Under the action of the fan, the "oil smoke" adheres to the radiator fins in large quantities, which in turn aggravates the adhesion of flying catkins and dust, increases the air duct resistance, reduces the ventilation volume, and deteriorates the heat exchange performance. Moreover, these poplars and catkins stuck in the air duct cannot be effectively cleaned;

[0006] In order to solve the over-temperature problem again, the main method used was to increase the core area of ​​the heat sink to improve the heat dissipation effect, so much so that some wind farms are still using this method for transformation;

[0007] But the actual effect is that within about one year after the implementation of this plan, the gearbox oil temperature can be reduced by 3 to 5°C, but after two years the effect is severely reduced or even completely lost, giving people the feeling that it is a pity to abandon it and useless to keep it. In the end, the actual problem is not completely solved and cost waste is increased. Summary of the invention

[0008] In view of the above problems existing in the existing cooling devices for wind turbine generator sets, the present invention is proposed.

[0009] Therefore, an object of the present invention is to provide a cooling device for a wind turbine generator set.

[0010] In order to solve the above technical problems, the present invention provides the following technical solutions: A cooling device for a wind turbine generator set, comprising:

[0011] Nacelle shell;

[0012] A heat dissipation system installed in the nacelle casing to dissipate the heat of the gearbox oil;

[0013] The anti-vibration mounting frame is used to suspend the cooling system on the top of the cabin shell, and at the same time, to buffer the vibration during the operation of the cooling system through anti-vibration.

[0014] As a preferred solution of the cooling device for wind turbine generator set described in the present invention, the heat dissipation system includes a heat exchange component and a heat dissipation component, the heat exchange component realizes the circulating heat exchange cooling of the gearbox oil with the help of the heat dissipation component, and the heat dissipation component is used to cool the medium after heat exchange.

[0015] As a preferred solution of the cooling device for a wind turbine generator set described in the present invention, the heat exchange component includes a heat exchanger, a pipeline is connected to the heat exchanger, and a temperature sensing control component is arranged on the pipeline.

[0016] As a preferred solution of the cooling device for wind turbine generator set described in the present invention, the pipeline includes an oil extraction pipe and an oil return pipe, and an oil extraction pump is installed on the oil extraction pipe.

[0017] As a preferred solution of the cooling device for a wind turbine generator set described in the present invention, the heat dissipation component includes a radiator and a medium tank, the return liquid end of the medium tank is connected to a return liquid pipe, and the liquid outlet end of the medium tank is directly connected to the liquid inlet end of the heat exchanger through an infusion pipe, the liquid inlet end of the radiator is connected to the liquid outlet end of the heat exchanger, and an infusion pump is installed on the infusion pipe.

[0018] As a preferred solution of the cooling device for a wind turbine generator set described in the present invention, the radiator includes a condensing member and a mounting member, and the mounting member is used to mount the condensing member on the top of the nacelle shell.

[0019] As a preferred solution of the cooling device for wind turbine generator set described in the present invention, the condensing part includes an outer frame, the inner side of the outer frame has a plurality of fins in an equidistant linear array, the gap between two adjacent fins forms a heat dissipation channel, and heat exchange tubes are arranged through the plurality of fins.

[0020] As a preferred solution of the cooling device for wind turbine generator set described in the present invention, the seismic-resistant mounting frame part includes a main supporting frame and auxiliary supports symmetrically arranged on both sides thereof.

[0021] As a preferred solution of the cooling device for wind turbine generator set described in the present invention, the main support frame includes elastic steel plate one, elastic steel plate two and elastic steel plate three stacked in sequence from top to bottom, and column rods are equidistantly penetrated and fixed on the elastic steel plate one, elastic steel plate two and elastic steel plate three, and inner arc seats are fixed at the upper ends of the column rods, rotating rods are fixed at both ends of the bottom of the elastic steel plate one, a strip seat is arranged at the bottom of the elastic steel plate three, and a load-bearing rod rotatably connected to the rotating rod is fixed above the strip seat.

[0022] As a preferred solution of the cooling device for wind turbine generator set described in the present invention, the auxiliary bracket includes rotating grooves opened at the three ends of the elastic steel plate and a strip groove opened on the load-bearing rod, and a damper is rotatably connected to the inner side of the rotating groove, and guide rods sliding in the strip groove are fixed on both sides of the telescopic end of the damper.

[0023] Beneficial effects of the present invention: The present invention installs the condensing element outside the nacelle of the wind turbine generator through the installation element, utilizes the high-altitude air circulation for cooling, does not require a fan, reduces the cost, and solves many problems of installing the condenser in the nacelle, not only prolongs the service life of the gear box, reduces the operation and maintenance cost, but also improves the fan operability rate, improves the power generation efficiency and benefits;

[0024] The fins are composed of several heat dissipation strips arranged in a staggered order from top to bottom. On the one hand, they can increase the fitting area with the heat dissipation pipe, and on the other hand, they can increase the ventilation volume, effectively ensuring the heat exchange efficiency of the medium and improving the heat dissipation efficiency of the gearbox in disguise.

[0025] The anti-seismic mounting frame has the function of vibration relief, which solves the vibration generated during the operation of the equipment, allowing the equipment to run for a long time, avoiding the problem of loosening and falling off, and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. 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 these drawings without creative work. Among them:

[0027] Figure 1 The figure is a schematic diagram of the overall structure of the cooling device for a wind turbine generator set according to the present invention.

[0028] Figure 2 The figure is a schematic diagram of the structure of the interior of the nacelle shell in the cooling device for a wind turbine generator set according to the present invention.

[0029] Figure 3 The figure is a schematic structural diagram of a heat dissipation system in a cooling device for a wind turbine generator set according to the present invention.

[0030] Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0031] Figure 5 The figure is a schematic diagram of the structure of the radiator in the cooling device for a wind turbine generator set according to the present invention.

[0032] Figure 6 The figure is a schematic structural diagram of the anti-seismic mounting frame part of the cooling device for a wind turbine generator set according to the present invention.

[0033] Figure 7 For the present invention Figure 6 The enlarged structural diagram at B in FIG. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0037] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0038] Example 1

[0039] Reference Figure 1-4 , a cooling device for a wind turbine generator set, comprising:

[0040] Nacelle shell 100;

[0041] a heat dissipation system 200 installed in the nacelle housing 100 for dissipating heat from the gearbox oil;

[0042] Furthermore, the heat dissipation system 200 includes a heat exchange component 201 and a heat dissipation component 202. The heat exchange component 201 realizes circulating heat exchange cooling of the gearbox oil with the help of the heat dissipation component 202, and the heat dissipation component 202 is used to cool the medium after heat exchange.

[0043] Furthermore, the heat exchange assembly 201 includes a heat exchanger 201a, a pipeline 201b is connected to the heat exchanger 201a, and a temperature sensing control component 201c is provided on the pipeline 201b.

[0044] Furthermore, the pipeline 201b includes an oil extraction pipe 201b-1 and an oil return pipe 201b-2, and an oil extraction pump 201b-3 is installed on the oil extraction pipe 201b-1.

[0045] Specifically, the oil extraction end of the oil extraction pipe 201b-1 is located in the gearbox oil pool, and the high-temperature oil in the gearbox is extracted by the operation of the oil extraction pump 201b-3. The extracted oil enters the inner cavity of the heat exchanger 201a (the heat exchanger 201a has an inner cavity and an outer cavity, and the outer cavity is located outside the inner cavity) through the oil extraction pipe 201b-1. The oil entering the inner cavity exchanges heat with the medium flowing in the outer cavity, and then returns to the gearbox oil pool through the return oil pipe 201b-2 after the heat exchange, so as to cool the gearbox, avoid the problem of pitting corrosion on the gear surface and aging of the oil due to excessive gear temperature, and improve the working life of the gearbox.

[0046] The temperature sensing control element 201c includes a connecting pipe 201c-1 and a control valve 1 201c-2. Both ends of the connecting pipe 201c-1 are connected to the oil pumping pipe 201b-1 and the oil return pipe 201b-2 respectively through a tee, and a control valve 201c-3 is installed on the connecting pipe 201c-1. A temperature sensor is installed in the oil return pipe 201b-2. The temperature sensor monitors the temperature of the oil after heat exchange and transmits it to the external temperature controller. The temperature controller is set with a threshold value. When the oil temperature is detected, When the temperature is lower than the threshold, open control valve 1 201c-2 at the end of the return oil pipe 201b-2 and close control valve 201c-3. At this time, the oil returns directly to the oil pool. When the monitored oil temperature is higher than the set threshold, close control valve 1 201c-2 and open control valve 201c-3. At this time, the oil enters the oil extraction pipe 201b-1 again through the connecting pipe 201c-1 for heat exchange and cooling again, ensuring that the oil temperature entering the oil pool is lower than the set threshold, thereby improving the heat dissipation efficiency of the gearbox.

[0047] Furthermore, the heat dissipation component 202 includes a radiator 202a and a medium tank 202b, the return liquid end of the medium tank 202b is connected to a return liquid pipe 202c, and the liquid outlet end of the medium tank 202b is directly connected to the liquid inlet end of the heat exchanger 201a through an infusion pipe 202d, the liquid inlet end of the radiator 202a is connected to the liquid outlet end of the heat exchanger 201a, and an infusion pump 202e is installed on the infusion pipe 202d.

[0048] Specifically, the infusion pump 202e extracts the refrigerant in the medium tank 202b, and the extracted refrigerant enters the outer cavity in the heat exchanger 201a through the infusion tube 202d. The outer cavity and the inner cavity are directly separated by a heat conduction plate. The coldness of the refrigerant is used to reduce the temperature of the oil in the inner cavity, thereby achieving the effect of oil cooling. After heat exchange, the refrigerant's own temperature will rise, and the refrigerant with increased temperature enters the radiator 202a for heat dissipation. After heat dissipation, the refrigerant will return to the medium tank 202b again, forming a complete heat dissipation system.

[0049] Example 2

[0050] Reference Figure 5 This embodiment is different from the first embodiment in that: this embodiment is used in a cooling device of a wind turbine generator set, and the radiator 202a includes a condensing member and a mounting member, and the mounting member is used to mount the condensing member on the top of the nacelle shell 100.

[0051] The radiator 202a is installed on the outside of the cabin shell 100, which solves many disadvantages of installation inside the cabin. It uses high-altitude air circulation for cooling, does not require a fan, and reduces costs. It not only extends the service life of the gearbox and reduces operation and maintenance costs, but also improves the fan operability and improves power generation efficiency and benefits.

[0052] Furthermore, the condensing element includes an outer frame 202a-1, and a plurality of fins 202a-2 are arranged in an equidistant linear array on the inner side of the outer frame 202a-1. The gap between two adjacent fins 202a-2 forms a heat dissipation channel, and heat exchange tubes 202a-3 are arranged through the plurality of fins 202a-2.

[0053] Specifically, the fin 202a-2 is composed of a plurality of heat dissipation strips arranged in a staggered order from top to bottom. The plurality of heat dissipation strips are integrally formed by copper stamping, which can increase the fitting area with the heat dissipation pipe on the one hand, and increase the ventilation volume on the other hand, effectively ensuring the heat exchange efficiency of the medium, and improving the heat dissipation efficiency of the gear box in disguised form;

[0054] Specifically, the mounting parts include a support leg 202a-4 arranged at the bottom of the outer frame 202a-1 and a mounting plate 202a-5 installed at the upper end of the outer frame 202a-1, and a rotating seat 202a-6 is symmetrically arranged on the mounting plate 202a-5. The inner side of the rotating seat 202a-6 is rotatably connected to a pull rod 202a-7, and the other end of the pull rod 202a-7 is rotatably connected to a fixed seat 202a-8.

[0055] Specifically, the pull rod 202a-7 uses two sections of screw rods, which are locked by a screw sleeve thread. The two screw rods are relatively moved and tightened by rotating the screw sleeve, thereby locking the outer frame 202a-1 to avoid the problem of high-altitude shaking.

[0056] The rest of the structure is the same as that of Example 1.

[0057] Example 3

[0058] Reference Figure 6-7 , this embodiment is different from the above embodiment in that: the cooling device for a wind turbine generator set in this embodiment further includes:

[0059] The anti-vibration mounting frame part 300 is used to suspend and mount the heat dissipation system 200 on the top of the nacelle shell 100, and at the same time, to buffer the vibration of the heat dissipation system 200 during operation by anti-vibration;

[0060] The anti-seismic mounting frame part 300 includes a main support frame 301 and auxiliary supports 302 symmetrically arranged on both sides thereof.

[0061] Furthermore, the main support frame 301 includes an elastic steel plate 1 301a, an elastic steel plate 2 301b and an elastic steel plate 3 301c which are stacked in sequence from top to bottom, and column rods 301d are equidistantly fixed through the elastic steel plate 1 301a, the elastic steel plate 2 301b and the elastic steel plate 3 301c, an inner arc seat 301e is fixed to the upper end of the column rod 301d, rotating rods 301f are fixed to both ends of the bottom of the elastic steel plate 1 301a, a strip seat 301g is provided at the bottom of the elastic steel plate 301c, and a load-bearing rod 301h rotatably connected to the rotating rod 301f is fixed above the strip seat 301g.

[0062] Specifically, the elastic steel plate 1 301a, the elastic steel plate 2 301b and the elastic steel plate 3 301c are all arc-shaped structures, and the lengths of the three are increased in sequence. The elastic steel plate 2 301b and the elastic steel plate 3 301c are provided with holes at positions corresponding to the rotating rod 301f, and the rotating rod 301f passes through the holes. The strip seat 301g is provided with an area for installing the medium tank 202b and the heat exchanger 201a. The medium tank 202b and the heat exchanger 201a are installed on the strip seat 301g by bolts. The vibration of the liquid flow during the heat exchange process and the vibration generated when the infusion pump 202e is operated will be buffered by the tension of the elastic steel plate 1 301a, the elastic steel plate 2 301b and the elastic steel plate 3 301c, thereby reducing the vibration.

[0063] The auxiliary bracket 302 includes a rotating groove 302a opened at both ends of the elastic steel plate 301c and a strip groove 302b opened on the load-bearing rod 301h. The inner side of the rotating groove 302a is rotatably connected to a damper 302c, and guide rods 302d sliding in the strip groove 302b are fixed on both sides of the telescopic end of the damper 302c.

[0064] The damper 302c cooperates with the tension at both ends of the elastic steel plate 301c to further offset the residual vibration, thereby solving the vibration generated during the operation of the equipment, allowing the equipment to operate for a long time, avoiding the problem of loosening and falling off, and reducing maintenance costs.

[0065] The rest of the structure is the same as that of Example 2.

[0066] Media selection:

[0067] In the extremely cold climate of the north, when the machine is shut down for a long time and then restarted at low temperature, the oil viscosity is high and the temperature rises slowly. The oil is mainly circulated through the temperature control valve, and at this time the two-phase pump is in standby mode, and the system heats the refrigerant. At this time, the pump drive system is not cooling the oil, but heating the oil, thereby accelerating the oil circulation.

[0068] The selection of working fluid follows the following principles:

[0069] 1) Chemical properties are stable and inert.

[0070] 2) Safe, non-toxic, non-flammable, highly insulating and environmentally friendly.

[0071] 3) The appropriate saturated steam pressure cannot be too high. Too high saturated steam pressure has high requirements on pipeline pressure resistance and is difficult to design. The saturated steam pressure cannot be too small. Generally, the saturated steam pressure in the working temperature zone should be greater than 0.1MPa, so that the system will not form negative pressure.

[0072] 4) Thermal properties: suitable boiling point and critical temperature, low viscosity, high thermal conductivity and large latent heat of vaporization.

[0073] 5) Compatibility: Compatible with common materials.

[0074] 6) Others: low freezing point, large dielectric constant (high insulation), low price.

[0075] According to the above principles, the commonly used working fluids that can be selected are shown in the following table.

[0076]

[0077]

[0078]

[0079] Common working fluid parameters (50℃)

[0080] From the comparison of the above working fluids, the following preliminary conclusions can be drawn:

[0081] 1. Ammonia has a suitable working temperature range and is also a commonly used working fluid for heat pipes. It has a relatively large latent heat of vaporization and good thermal properties. However, it is toxic and flammable, so it is not suitable for use in situations where it may come into contact with people.

[0082] 2. Water has excellent thermal properties, but its freezing point is high, and its dp / d is too small, only 0.19 kPa / K, which limits its application in two-phase systems. It cannot be used in situations where high temperature uniformity is required, and it is not suitable for applications at low temperatures.

[0083] 3. The working fluids of the common Freon series are relatively similar. R134a and R22 are more suitable for use in occasions with a wide range of working temperatures, and their saturated vapor pressure is relatively small, so the system pressure is relatively small, but R22 is not environmentally friendly;

[0084] 4. Alcohol and acetone have high critical temperatures, both exceeding 200°C, and their saturated vapor pressure is relatively small, so they have obvious advantages in applications with relatively high temperatures. However, alcohol is flammable and acetone has low saturated pressure, which will form negative pressure in the system, so they are not applicable.

[0085] 5. CO2: As a two-phase circuit, its advantages and disadvantages are very obvious. One of the outstanding advantages of CO2 as a working fluid is that its dP / dt is very large. Therefore, CO2 is very suitable for occasions with high requirements for temperature uniformity. However, its saturation pressure is relatively high, exceeding 7MPa at 30°C, making system design difficult.

[0086] Based on the comparison of the above working fluid properties, Freon-type working fluids can be used in two-phase fluid circuits, but their thermal properties need to be further compared.

[0087]

[0088]

[0089] Comparison of thermal performance of various working fluids (20℃)

[0090] From the above comparison, it can be seen that R134a and R23 have better performance, but the critical temperature of R23 is low and it is not applicable within the required working range;

[0091] Therefore, R134a is used as the working fluid.

[0092] Test example:

[0093] The F04 unit of the Hekou Wind Farm was used as a trial modification. It should be noted that the gearbox oil cooling of the F04 unit had almost no effect after the modification of increasing the heat sink area;

[0094] Compare the gearbox temperature after rectification:

[0095]

[0096]

[0097] After testing and comparison, the rectification can ensure that the gearbox oil temperature can be controlled at around 65° when the unit is in full power state, which can completely eliminate the gearbox overheating phenomenon, and the operation and maintenance work caused by it is basically reduced to zero. The unit failures are reduced, and the spare parts cost, maintenance cost and labor cost required for equipment maintenance are reduced accordingly.

[0098] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0099] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0100] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0101] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A cooling device for a wind turbine generator set, characterized in that: include: Nacelle shell (100); A heat dissipation system (200), installed in the nacelle casing (100) and used for dissipating the heat of the gearbox oil; The anti-vibration mounting frame part (300) is used to suspend and mount the heat dissipation system (200) on the top of the cabin shell (100), and at the same time, to buffer the vibration of the heat dissipation system (200) during operation through anti-vibration.

2. The cooling device for a wind turbine generator set according to claim 1, characterized in that: The heat dissipation system (200) comprises a heat exchange component (201) and a heat dissipation component (202); the heat exchange component (201) realizes circulating heat exchange cooling of the gearbox oil with the aid of the heat dissipation component (202); and the heat dissipation component (202) is used to cool the medium after heat exchange.

3. The cooling device for a wind turbine generator set according to claim 2, characterized in that: The heat exchange component (201) comprises a heat exchanger (201a), the heat exchanger (201a) is connected to a pipeline (201b), and the pipeline (201b) is provided with a temperature sensing control component (201c).

4. The cooling device for a wind turbine generator set according to claim 3, characterized in that: The pipeline (201b) comprises an oil extraction pipe (201b-1) and an oil return pipe (201b-2), and an oil extraction pump (201b-3) is installed on the oil extraction pipe (201b-1).

5. The cooling device for a wind turbine generator set according to claim 4, characterized in that: The heat dissipation component (202) comprises a radiator (202a) and a medium tank (202b); the liquid return end of the medium tank (202b) is connected to a liquid return pipe (202c); the liquid outlet end of the medium tank (202b) is directly connected to the liquid inlet end of the heat exchanger (201a) via a liquid infusion pipe (202d); the liquid inlet end of the radiator (202a) is connected to the liquid outlet end of the heat exchanger (201a); and a liquid infusion pump (202e) is installed on the liquid infusion pipe (202d).

6. The cooling device for a wind turbine generator set according to claim 5, characterized in that: The radiator (202a) comprises a condensing element and a mounting element, wherein the mounting element is used to mount the condensing element on the top of the nacelle shell (100).

7. The cooling device for a wind turbine generator set according to claim 6, characterized in that: The condensing element comprises an outer frame (202a-1), a plurality of fins (202a-2) are arranged in an equidistant linear array on the inner side of the outer frame (202a-1), a gap between two adjacent fins (202a-2) forms a heat dissipation channel, and heat exchange tubes (202a-3) are arranged through the plurality of fins (202a-2).

8. The cooling device for a wind turbine generator set according to claim 7, characterized in that: The anti-seismic mounting frame part (300) comprises a main support frame (301) and auxiliary supports (302) symmetrically arranged on both sides thereof.

9. The cooling device for a wind turbine generator set according to claim 8, characterized in that: The main support frame (301) includes elastic steel plate one (301a), elastic steel plate two (301b) and elastic steel plate three (301c) stacked in sequence from top to bottom, and pillars (301d) are equidistantly penetrated and fixed on the elastic steel plate one (301a), elastic steel plate two (301b) and elastic steel plate three (301c), and an inner arc seat (301e) is fixed to the upper end of the pillar (301d), and rotating rods (301f) are fixed to both ends of the bottom of the elastic steel plate one (301a), and a strip seat (301g) is arranged at the bottom of the elastic steel plate three (301c), and a load-bearing rod (301h) rotatably connected to the rotating rod (301f) is fixed above the strip seat (301g).

10. The cooling device for a wind turbine generator set according to claim 9, characterized in that: The auxiliary bracket (302) includes a rotation groove (302a) opened at both ends of the elastic steel plate (301c) and a strip groove (302b) opened on the load-bearing rod (301h), and a damper (302c) is rotatably connected to the inner side of the rotation groove (302a), and guide rods (302d) sliding in the strip groove (302b) are fixed on both sides of the telescopic end of the damper (302c).

Images