Radiator fixing support on top cover of wind generating set

Abstract

The invention relates to the technical field of wind power generation, in particular to a radiator fixing support on a top cover of a wind generating set, which comprises a gear box pump heat dissipation system, an oil pump and a two-phase pump respectively circulate oil and refrigerant, and oil temperature control of a gear box is realized through heat exchange cooling of an evaporator and cooling phase change of a condenser; and the condenser is mounted at the top of the cabin. The invention has the beneficial effects that the gear box is modified by adopting a pump-driven two-phase heat dissipation technology, the overtemperature fault of the wind generating set can be thoroughly solved, the economic benefit is very outstanding, the fan can thoroughly eliminate the overtemperature phenomenon of the gear box, the operation and maintenance work is basically zero, the set fault is reduced, and the working efficiency is improved. And the accessory cost, the maintenance cost and the labor cost required by equipment maintenance are reduced accordingly.

Description

Technical Field

[0001] The invention relates to the technical field of wind power generation, in particular to a radiator fixing bracket on a top cover of a wind power generator set. Background Art

[0002] In recent years, with the increase in the scale of wind power installed capacity in my country, the grid dispatching agencies have put forward increasingly stringent requirements for wind farms. The introduction of policies such as the national power market reform, the gradual reduction of new energy electricity price subsidies, and the competitive allocation of wind power projects have further increased the difficulty of wind farm production and operation. The power loss caused by the high temperature alarm shutdown of the gearbox and the resulting safety risks have become a problem that most wind farms in my country's wind power industry need to solve urgently.

[0003] Frequent over-temperature alarms keep operation and maintenance personnel busy, especially in hot and cold seasons, when operating in confined spaces, which can easily lead to operational errors by maintenance personnel and cause safety accidents. Summary of the invention

[0004] Some simplifications or omissions may be made in this section and the abstract and title of the present application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0005] The invention aims to provide a radiator fixing bracket on the top cover of a wind turbine generator set.

[0006] Therefore, its purpose is to solve the problem caused by the gearbox high temperature alarm shutdown.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a radiator fixing bracket on the top cover of a wind turbine generator set, which includes a gear box pump drive heat dissipation system, through which oil and refrigerant are circulated respectively by an oil pump and a two-phase pump, and the gear box oil temperature is controlled through heat exchange cooling of the evaporator and cooling phase change of the condenser; the condenser is installed on the top of the cabin.

[0008] As a preferred solution of the radiator fixing bracket on the top cover of the wind turbine generator set of the present invention, the oil pump is installed on the outside of the gear box to extract lubricating oil from the gear box oil pool, and the filter is arranged on the pipeline between the oil pump and the evaporator.

[0009] As a preferred solution of the radiator fixing bracket on the top cover of the wind turbine generator set of the present invention, the oil pump, filter, evaporator and gear box oil pool are connected by multiple oil pipelines to form a closed circulation path.

[0010] As a preferred solution of the radiator fixing bracket on the top cover of the wind turbine generator set of the present invention, wherein: a heat exchanger is arranged inside the evaporator, which can contact the lubricating oil in the gear box and absorb its heat;

[0011] The two-phase pump is capable of conveying liquid refrigerant from the liquid storage tank to the evaporator, and conveying gaseous refrigerant generated by the evaporator to the condenser.

[0012] As a preferred solution of the radiator fixing bracket on the top cover of the wind turbine generator set of the present invention, wherein: the gear box pump heat dissipation system also includes a sensor, which is arranged near the heat source or in the heat exchanger to detect the change of the heat load and can transmit the detected data signal to the PLC;

[0013] The PLC calculates the currently required refrigerant flow rate and flow rate according to the received data signal, and controls the actuator to make corresponding adjustments accordingly.

[0014] As a preferred solution of the radiator fixing bracket on the top cover of the wind turbine generator set of the present invention, a cushion layer is arranged between the condenser and the curved arc-shaped load-bearing steel plate of the cabin, and the shape of the cushion layer can closely fit the contour of the curved arc-shaped load-bearing steel plate of the cabin.

[0015] As a preferred solution of the radiator fixing bracket on the top cover of the wind turbine generator set of the present invention, wherein: the fixing bracket is arranged below the corresponding condenser installation position in the cabin;

[0016] The fixing bracket includes at least one crossbeam, and the crossbeam is used to directly support the condenser installed above.

[0017] As a preferred solution of the radiator fixing bracket on the top cover of the wind turbine generator set of the present invention, wherein: the diagonal brace is arranged on both sides of the condenser and connected to the condenser and the fixing bracket;

[0018] A pull rope, one end of which is connected to the condenser.

[0019] As a preferred solution of the radiator fixing bracket on the top cover of the wind turbine generator set of the present invention, the condenser has an air duct with a corrugated design.

[0020] As a preferred solution of the radiator fixing bracket on the top cover of the wind turbine generator set of the present invention, at least one blade or spoiler is installed around the condenser, and the blade or spoiler changes the direction of the surrounding airflow.

[0021] The beneficial effect of the radiator fixing bracket on the top cover of the wind turbine generator set of the present invention is: by introducing a two-phase pump and refrigerant circulation, the heat generated by the gear box can be removed more effectively. Compared with traditional cooling methods, this method can achieve higher heat exchange efficiency, thereby keeping the gear box temperature within a safe and optimized range, which can completely solve the over-temperature failure of the wind turbine generator set and has outstanding economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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:

[0023] Figure 1 The figure is a system working principle block diagram of the radiator fixing bracket on the top cover of the wind turbine generator set in the present invention.

[0024] Figure 2 The present invention is a schematic diagram of the front view structure of the condenser installation of the radiator fixing bracket on the top cover of the wind turbine generator set.

[0025] Figure 3 It is a schematic diagram of the side view structure of the condenser installation of the radiator fixing bracket on the top cover of the wind turbine generator set in the present invention.

[0026] In the figure:

[0027] 100. Gear box pump cooling system; 101. Oil pump; 102. Two-phase pump; 103. Evaporator; 104. Condenser;

[0028] 200, cushion layer; 201, fixed bracket; 202, diagonal brace; 203, pull rope. DETAILED DESCRIPTION

[0029] 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.

[0030] 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.

[0031] 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.

[0032] Example 1

[0033] Reference Figure 1 , which is the first embodiment of the present invention, provides a radiator fixing bracket on the top cover of a wind turbine generator set, including a gear box pump drive heat dissipation system 100, through which oil pump 101 and two-phase pump 102 circulate oil and refrigerant respectively, and the gear box oil temperature is controlled through heat exchange cooling of evaporator 103 and cooling phase change of condenser 104; condenser 104 is installed on the top of the cabin.

[0034] In this embodiment, in the wind turbine generator set, the gearbox plays a vital role, which is responsible for increasing the speed of the wind rotor to the speed required by the generator. However, due to mechanical friction and loss in the energy conversion process, the gearbox will generate a lot of heat during operation. If this heat cannot be dissipated in a timely and effective manner, it will cause the equipment to overheat, affect its working efficiency, and even cause damage.

[0035] Specifically, the oil pump 101 is mainly used to extract lubricating oil from the gear box.

[0036] The two-phase pump 102 is used to drive the circulation of the refrigerant. The refrigerant is a special liquid that can undergo a phase change (from liquid to gas) at low temperatures, thereby absorbing a large amount of heat. In this way, it can remove heat more efficiently and keep the temperature in the gearbox within a safe range.

[0037] When the refrigerant flows through the evaporator 103, it absorbs heat from the gearbox lubricating oil, causing its own temperature to rise and undergo a phase change from liquid to gas. In this process, the lubricating oil is cooled to prevent degradation due to high temperature.

[0038] The gaseous refrigerant is then sent to the condenser 104 located on the top of the cabin, where it releases the heat previously absorbed to the outside air or cooling medium such as water, and returns to liquid again, ready for the next cycle.

[0039] Installing the condenser 104 on the top of the cabin, on the one hand, helps to make full use of natural wind for auxiliary cooling and reduce additional energy consumption; on the other hand, it is also convenient for maintenance personnel to regularly inspect and maintain the equipment and improve the reliability of the system.

[0040] By combining the oil pump 101 with the two-phase pump 102, effective management of lubricating oil and refrigerant is achieved, ensuring that the internal temperature of the gearbox is always maintained at an ideal state. Natural wind is used as an auxiliary cooling method to reduce energy consumption.

[0041] The oil pump 101 is installed on the outside of the gearbox and is used to extract lubricating oil from the gearbox oil pool; the filter is set on the pipeline between the oil pump 101 and the evaporator 103 to remove impurities and particulate matter in the lubricating oil to ensure the cleanliness of the lubricating oil; the evaporator 103 reduces the temperature of the lubricating oil through a heat exchange process; the oil pump 101, the filter, the evaporator 103 and the gearbox oil pool are connected by multiple oil pipelines to form a closed circulation path.

[0042] In this embodiment, the oil pump 101 installed on the outside of the gearbox can effectively extract the lubricating oil from the gearbox oil pool, remove impurities and particles therein through the filter to ensure the cleanliness of the lubricating oil; then the lubricating oil temperature is reduced through the evaporator 103, and finally sent back to the gearbox oil pool to complete a complete cycle. This cycle is repeated continuously, thereby achieving continuous purification and cooling of the lubricating oil.

[0043] The oil pump 101 is responsible for extracting the lubricating oil from the gearbox oil pool and pushing it to flow along a set path. The selection of the appropriate type of oil pump 101 (such as a centrifugal pump or a positive displacement pump) depends on the needs of the specific application scenario. Considering the characteristics of the internal environment of the gearbox, the oil pump 101 is usually made of corrosion-resistant and wear-resistant materials, and is equipped with a frequency conversion control device to adjust the flow rate according to actual needs.

[0044] The filter is located on the pipeline between the oil pump 101 and the evaporator 103. As the lubricating oil circulates in the system, some solid particle pollutants such as metal chips and carbides will inevitably be generated. If these pollutants are not removed in time, they will cause serious damage to the equipment. Therefore, it is very necessary to set up a high-performance filter here. Modern filtering technology allows us to use a variety of different types of filter element combinations to achieve the best effect. For example, a combination of coarse and fine filtration can effectively intercept large-sized particles and capture tiny impurities, ensuring that the lubricating oil entering the subsequent processing links remains highly pure.

[0045] The evaporator 103 uses the heat exchange principle to reduce the temperature of the lubricating oil. When the lubricating oil flows through the evaporator 103, heat is transferred to the internal low-temperature medium, thereby achieving the purpose of temperature reduction.

[0046] The above components are connected by oil pipelines, forming a closed lubricating oil circulation path.

[0047] A heat exchanger is arranged inside the evaporator 103, which can directly contact the lubricating oil in the gear box and absorb its heat; the two-phase pump 102 is capable of transporting liquid refrigerant from the liquid storage tank to the evaporator 103, and transporting the gaseous refrigerant generated by the evaporator 103 to the condenser 104; the condenser 104 can utilize external natural wind or other means to realize the conversion of gaseous refrigerant to liquid; the gear box pump drives the heat dissipation system 100 to form a closed circulation path, so that the refrigerant can flow continuously between the components, thereby achieving the purpose of continuously regulating the gear box oil temperature.

[0048] In this embodiment, an efficient heat exchanger is disposed inside the evaporator 103. The heat exchanger is usually composed of a series of pipes or plates, which have a large surface area to promote heat transfer. When the lubricating oil flows through these structures, the heat is quickly transferred to the refrigerant, causing the refrigerant to change from liquid to gas. This process not only effectively reduces the temperature of the lubricating oil, but also ensures that the refrigerant can evaporate under low pressure conditions, thereby improving the energy efficiency of the entire system.

[0049] The two-phase pump 102 mainly transports the liquid refrigerant in the liquid storage tank to the evaporator 103, and transports the evaporated gaseous refrigerant to the condenser 104. The design of the two-phase pump 102 must take into account the characteristic changes of the refrigerant in different states (i.e., liquid and gas), so it needs to have good pressure resistance and adaptability.

[0050] The condenser 104 is responsible for receiving the gaseous refrigerant from the evaporator 103 and converting it back into liquid. This conversion process depends on the cooling conditions provided by the outside world, such as natural wind or additional cooling devices (such as fans or water cooling systems). Through the effective condensation process, the refrigerant is restored to its original state and is ready to enter the next cycle again.

[0051] The entire gearbox pump drive heat dissipation system 100 forms a completely closed circulation path, which means that the refrigerant will not come into direct contact with the outside world during the entire process, avoiding the risk of contamination and loss.

[0052] The gearbox pump drive heat dissipation system 100 also includes a sensor, which is arranged near the heat source or in the heat exchanger to detect changes in the heat load and can transmit the detected data signal to the PLC; the PLC calculates the currently required refrigerant flow rate and flow rate based on the received data signal, and controls the actuator to make corresponding adjustments accordingly; the actuator, including but not limited to solenoid valves, pumps and servo motors, is directly controlled by the PLC to accurately adjust the refrigerant flow rate and flow rate through the heat exchanger, thereby achieving effective management of the heat dissipation power.

[0053] In this embodiment, the working principle of this system is based on closed-loop feedback control theory. When the lubricating oil in the gearbox generates heat due to mechanical friction and other reasons, the sensor will monitor the temperature change of the lubricating oil in real time, and convert these data into electrical signals and send them to the PLC. After receiving these signals, the PLC uses a built-in algorithm to calculate the optimal refrigerant flow rate and flow rate under the current conditions to ensure that the excess heat can be effectively removed. Then, the PLC sends instructions to the actuator to adjust the speed of the pump, the opening of the solenoid valve or the position of the servo motor, thereby accurately controlling the flow parameters of the refrigerant to achieve the best heat dissipation effect.

[0054] When choosing a sensor, considering environmental factors and technical requirements, models with high accuracy and fast response characteristics are usually selected. For example, thermocouples or RTDs (resistance thermometers) are used to measure temperature because they provide accurate and stable outputs. In addition, if the pressure or flow rate of the fluid needs to be monitored, corresponding pressure transmitters or flow meters can also be configured.

[0055] In addition, the scope of gear heat dissipation modification is to add a pump-driven heat dissipation system 100 to the gear box. The construction steps are as follows:

[0056] 1. First, set up the safety fence outside the cabin to prepare for the installation outside the cabin;

[0057] 2. The original radiator exhaust port is dismantled and relocated, and the original radiator exhaust port is used as an exit passage for the outboard condenser 104 to install outboard equipment;

[0058] 3.Installation of load-bearing brackets in the cabin;

[0059] 4. The system host is transported to the engine room, and the base bracket is welded and fixed to the right side of the planetary gear housing of the gearbox;

[0060] 5. Connect the oil outlet pipe of the original lubrication pump group of the unit to the oil inlet of the pump-driven cooling system 100, and connect the oil outlet of the pump-driven cooling system 100 to the oil port of the gear box (all three oil pipes of the original lubrication pump group are replaced with new ones);

[0061] 6. Connect the refrigerant inlet and outlet of the pump-driven cooling system 100 to the inlet and outlet of the outboard condenser 104;

[0062] 7. The original radiator inlet and outlet are blocked and restored, and it is only used for strong exhaust of the cabin;

[0063] 8. The system is powered on, the program is tested, and the unit resumes operation.

[0064] Secondly, the gearbox pump drive cooling system 100 takes power from the Q130.2 switch in the cabinet. This system has an independent electrical control system and does not change the original control logic of the fan;

[0065] In order to facilitate accurate and effective setting of the control parameters of the system, the gearbox pump drive cooling system 100 needs to introduce a system control signal from the original gearbox oil temperature sensor.

[0066] In addition, for the heat dissipation of the gearbox system, the phase change point is set according to the different ambient temperatures in different regions. After two years of operation test in Tongliao, Inner Mongolia, the choice was made by comprehensively balancing the factors such as the viscosity of the oil at low temperature causing the original lubrication system fluid resistance to reduce the circulation volume of the lubricating oil and increase the system and pipeline pressure. It does not pursue the absolute value of temperature reduction, but pursues the realistic goal of not overheating. In this way, when fully fired, the oil temperature of the gearbox is stable at around 65℃, and the oil temperature can be stable at around 55℃ when not fully fired.

[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 102 is in standby mode, and the system heats the refrigerant. At this time, the pump-driven cooling system 100 is not cooling the oil, but heating the oil, thereby accelerating the circulation of the oil.

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

[0069] Chemically stable and inert.

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

[0071] The appropriate saturated steam pressure cannot be too high. Too high saturated steam pressure places high requirements on the pipeline pressure resistance and makes the design difficult. 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] Thermal properties: suitable boiling point and critical temperature, low viscosity, high thermal conductivity and large latent heat of vaporization.

[0073] Compatibility Compatible with common materials.

[0074] 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] Table 1 Common working fluid parameters (50℃)

[0079] From the comparison of the above working fluids, the following preliminary conclusions can be drawn:

[0080] Ammonia has a suitable operating 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, but it is toxic and flammable, and should not be used in situations where it may come into contact with humans.

[0081] Water has excellent thermal properties, but a high freezing point and a very small dp / d of 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 is not suitable for applications at low temperatures.

[0082] The working fluids of the common Freon series are relatively similar. R134a and R22 are more suitable for use in occasions with a wider operating temperature range, and their saturated vapor pressure is relatively small, so the system pressure is relatively small, but R22 is not environmentally friendly.

[0083] The critical temperatures of alcohol and acetone are relatively high, both exceeding 200°C, and their saturated vapor pressure is relatively small, so they have obvious advantages in applications where the temperature is relatively high. However, alcohol is flammable and acetone has a low saturated pressure, which will form negative pressure in the system, making them unsuitable.

[0084] 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 its dP / dt, which 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.

[0085] 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.

[0086] Serial number Working fluid Latent heat of vaporization (KJ / kg) <![CDATA[Steam density (kg / m 3 )]]> θ=γ 1 R134a 290 27.981 8114.49 2 R113 154 2.87 441.98 3 R22 335 19.712 6603.52 4 R23 89 260.863 23216.81 5 R12 335 19.712 6603.52 6 R13 338 19.94 6739.72 7 R152a 280 16.095 4506.6

[0087] Table 2 Comparison of thermal properties of various working fluids (20℃)

[0088] From the above comparison, it can be seen that R134a and R23 have better performance, but the critical temperature of R23 is low and is not applicable within the required working range.

[0089] Therefore, R134a is used as the working fluid.

[0090] Example 2

[0091] Reference Figure 2-3, which is the second embodiment of the present invention, is different from the previous embodiment in that the condenser 104 is installed on the top of the cabin. A cushion layer 200 is arranged between the condenser 104 and the cabin curved arc-shaped load-bearing steel plate. The cushion layer 200 has a thickness of 4 mm, a width of 300 mm, and a length of 2300 mm. The shape of the cushion layer 200 is designed to closely fit the contour of the cabin curved arc-shaped load-bearing steel plate to ensure that the weight of the condensation can be evenly dispersed and transferred to the entire contact surface.

[0092] In this embodiment,

[0093] The condenser 104 is responsible for receiving the heat from the gearbox and releasing it to the surrounding air. In order to ensure the best condensation effect and taking into account the overall layout of the equipment and the space utilization efficiency, the condenser 104 is installed on the top of the cabin. This location selection not only helps natural convection and improves the heat dissipation efficiency, but also reduces the occupation of ground space and optimizes the internal space structure of the equipment.

[0094] Since the top of the nacelle is usually constructed with a curved arc-shaped load-bearing steel plate, although this structure enhances the strength and stability of the nacelle, it also brings difficulties to the direct installation of the condenser 104. In order to ensure that the condenser 104 can be installed on the top of the nacelle smoothly and safely, and to make the weight of the condenser 104 evenly distributed on the entire contact surface, to avoid structural damage or displacement of the condenser 104 caused by local stress concentration, a cushion layer 200 is introduced.

[0095] The cushion layer 200 has a thickness of 4 mm, which can provide sufficient buffering to adapt to the slight unevenness between the condenser 104 and the cabin curved surface, but will not affect the installation height and stability of the condenser 104 due to excessive thickness. The size design of 300 mm wide and 2300 mm long ensures that the cushion layer 200 can cover the entire bottom of the condenser 104, thereby effectively distributing its weight. At the same time, such a size also facilitates the manufacturing and installation process of the cushion layer 200.

[0096] The ideal cushion layer 200 material should have good elasticity and compression recovery ability to maintain its cushioning effect for a long time; it also needs to have certain wear resistance and anti-aging performance to cope with various harsh working environments. Common material choices include but are not limited to rubber, polyurethane foam, etc. These materials can meet the above requirements while providing a relatively economical solution.

[0097] During the assembly process, the technician needs to carefully measure and adjust the position of the cushion layer 200 to ensure that it fits the condenser 104 and the cabin curved surface to the best state. In addition, the cushion layer 200 is checked regularly. If it is worn or deformed, it should be replaced with a new cushion layer 200 in time to ensure the normal operation of the system.

[0098] Example 3

[0099] Reference Figure 2-3 , which is the third embodiment of the present invention, and this embodiment further provides a radiator fixing bracket on the top cover of a wind turbine generator set. The fixing bracket 201 is arranged below the installation position of the corresponding condenser 104 in the cabin; the fixing bracket 201 includes at least one crossbeam, and the crossbeam is used to directly bear the weight of the condenser 104 installed above; the crossbeam is connected to the load-bearing plate on the cabin cover by bolts of M12 specification to ensure stability and facilitate disassembly during subsequent maintenance.

[0100] In this embodiment, the fixing bracket 201 is placed in a designated area in the cabin, just below the installation position of the condenser 104. The main function of the fixing bracket 201 is to provide a sturdy and stable platform to bear the weight of the condenser 104 and ensure that it can work safely and reliably throughout its service life.

[0101] For the fixed bracket 201 in this case, high-strength steel is selected, which has good tensile strength and corrosion resistance.

[0102] In order to further enhance the load-bearing capacity of the beam, the interior of the beam may be filled with reinforcing ribs or other forms of reinforcement structures to disperse the pressure and improve the stability of the overall structure.

[0103] The crossbeam is connected to the bearing plate on the hatch cover with M12 bolts. M12 bolts were chosen because they have a larger diameter and higher torque limit, which can provide strong tightening force without affecting the structural integrity.

[0104] The diagonal brace 202 is disposed on both sides of the condenser 104 and is connected to the condenser 104 and the fixed bracket 201 to provide additional supporting force, thereby improving the stability of the condenser 104 under the action of wind; the pull rope 203, one end of the pull rope 203 is connected to the condenser 104, and the other end is connected to a fixed point, so that the stability of the condenser 104 is further enhanced by the pull rope 203 in a tensioned state.

[0105] In this embodiment, the diagonal brace 202 and the pull rope 203 are generated based on the need to enhance the structural stability of the condenser 104. The condenser 104 will be affected by the external environment during operation, especially the wind force, which may cause it to shake or move, thereby affecting the working efficiency of the equipment or even causing damage. Therefore, by arranging the diagonal brace 202 on both sides of the condenser 104 and fixing it to a stable point with the pull rope 203, the negative impact of the wind force can be effectively offset and the overall stability of the condenser 104 can be improved.

[0106] The diagonal brace 202 is a component used to increase structural strength and support, which can disperse the force over a larger area, thereby reducing the pressure on a single connection point. In this solution, the diagonal brace 202 is placed on both sides of the condenser 104, directly connecting the condenser 104 and the fixed bracket 201. This arrangement not only provides additional support for the condenser 104, but also helps adjust the center of gravity of the overall structure, making it more difficult for the condenser 104 to tilt or collapse due to external forces.

[0107] The pull rope 203 provides a constraint mechanism different from the diagonal brace 202. When the pull rope 203 is in a tensioned state, it can "constrain" the condenser 104 tightly like a bandage to prevent it from being displaced too much under the action of external force. At the same time, since the other end of the pull rope 203 is connected to a stable fixed point, this means that any force attempting to move the condenser 104 will be resisted by this fixed point, thereby enhancing the wind resistance of the entire system.

[0108] Correct installation is a prerequisite for ensuring that the diagonal brace 202 and the pull rope 203 can perform at their best. The following are the specific installation steps:

[0109] Determine a suitable installation position to ensure that the diagonal braces 202 can be evenly distributed on both sides of the condenser 104 and form a stable triangular structure with the fixing bracket 201 .

[0110] Before installing the diagonal brace 202, first check whether all contact surfaces are flat and intact, and grind them if necessary to ensure a good fit.

[0111] For the pull rope 203, it is necessary to accurately measure and reserve an appropriate length so that a moderate tension can be maintained after installation. After installation, the safety of each connection part should be checked again.

[0112] Use professional tools and techniques to tighten all connections such as bolts, nuts, etc. to ensure that each component is firm and reliable.

[0113] The condenser 104 has a corrugated air duct, the height and width of which are increased compared to the traditional design, so that light pollutants such as lint and dust can easily pass through with the air flow and are not easily retained; at least one paddle or spoiler is installed around the condenser 104 or at a specific position. The paddle or spoiler changes the direction of the surrounding airflow, thereby reducing the deposition of lint and other substances on the surface of the condenser 104.

[0114] In this embodiment, the condenser 104 adopts a corrugated air duct design. Compared with the traditional straight air duct, this design significantly changes the airflow path and increases the height and width of the air duct. Specifically:

[0115] By appropriately increasing the height of the air duct, a larger space can be provided for the airflow, reducing the resistance encountered when the air flows, so that the airflow can pass through the condenser 104 more smoothly. This not only helps to improve the heat exchange efficiency, but also effectively prevents light pollutants such as lint and dust from being retained on the surface of the condenser 104 due to the slowing down of the airflow speed.

[0116] Increasing the width of the air duct is also to improve the airflow conditions, so that the airflow has a wider space when passing through the condenser 104, avoiding the turbulence caused by the narrow channel and reducing the possibility of pollutant adhesion. In addition, the wider air duct is also conducive to dispersing the airflow entering the condenser 104, further reducing the local pressure difference, and thus reducing the risk of pollutant deposition.

[0117] The corrugated design not only gives the air duct a beautiful appearance, but more importantly, it creates a series of continuous undulations, guiding the airflow to form an orderly flow pattern. Such structural characteristics enable the airflow to quickly switch directions between wave crests and wave troughs, using inertial force to carry light pollutants away from the surface of the condenser 104 instead of letting them stay in a certain position.

[0118] In addition to improving the air duct design, the present solution also installs at least one blade or spoiler device around or at a specific position of the condenser 104. The main function of these devices is to reduce the deposition of materials such as fluff on the surface of the condenser 104 by changing the direction of the surrounding airflow. The specific implementation is as follows:

[0119] The blades can be fixedly mounted at the front end or side of the condenser 104, and a suitable position can be selected according to actual needs. When the fan is started, the blades will generate additional airflow disturbances as the fan rotates, breaking up the airflow that is about to approach the condenser 104, making it difficult for it to directly impact the surface of the condenser 104. At the same time, the rotating blades will also generate centrifugal force to help shake off light pollutants that have already approached the condenser 104, preventing them from adhering to the surface.

[0120] For some situations where it is not suitable to install blades, a static spoiler can be selected. Such a device is usually composed of slats with a certain shape and angle, and is installed near the condenser 104. When the airflow passes through the spoiler, it is forced to change the original flow direction, forming a complex vortex effect. This process effectively disrupts the airflow path that may originally carry pollutants, reducing the probability of pollutants reaching the surface of the condenser 104.

[0121] 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.

[0122] 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.

[0123] 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.

[0124] 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 radiator fixing bracket on the top cover of a wind turbine generator set, characterized in that: include, The gearbox pump heat dissipation system (100) circulates oil and refrigerant respectively through an oil pump (101) and a two-phase pump (102), and controls the gearbox oil temperature through heat exchange cooling in an evaporator (103) and cooling phase change in a condenser (104); The condenser (104) is installed on the top of the cabin.

2. The radiator fixing bracket on the top cover of a wind turbine generator set according to claim 1, characterized in that: The oil pump (101) is installed outside the gear box and is used to extract lubricating oil from the gear box oil pool. The filter is arranged on the pipeline between the oil pump (101) and the evaporator (103).

3. The radiator fixing bracket on the top cover of a wind turbine generator set as claimed in claim 2, characterized in that: The oil pump (101), the filter, the evaporator (103) and the gearbox oil pool are connected via a plurality of oil pipelines to form a closed circulation path.

4. The radiator fixing bracket on the top cover of a wind turbine generator set as claimed in claim 2, characterized in that: The evaporator (103) is provided with a heat exchanger inside, which can contact the lubricating oil in the gear box and absorb the heat thereof; The two-phase pump (102) is capable of transporting liquid refrigerant from a liquid storage tank to an evaporator (103), and transporting gaseous refrigerant generated by the evaporator (103) to a condenser (104).

5. The radiator fixing bracket on the top cover of a wind turbine generator set as claimed in claim 4, characterized in that: The gear box pump heat dissipation system (100) further comprises a sensor, which is arranged near a heat source or in a heat exchanger, for detecting changes in heat load and capable of transmitting the detected data signal to a PLC; The PLC calculates the currently required refrigerant flow rate and flow rate according to the received data signal, and controls the actuator to make corresponding adjustments accordingly.

6. The radiator fixing bracket on the top cover of a wind turbine generator set as claimed in claim 5, characterized in that: A cushion layer (200) is provided between the condenser (104) and the curved arc-shaped load-bearing steel plate of the cabin, and the shape of the cushion layer (200) can closely fit the contour of the curved arc-shaped load-bearing steel plate of the cabin.

7. The radiator fixing bracket on the top cover of a wind turbine generator set according to claim 1, characterized in that: A fixing bracket (201), wherein the fixing bracket (201) is arranged below a mounting position of the condenser (104) in the cabin; The fixing bracket (201) comprises at least one crossbeam, and the crossbeam is used to directly support the condenser (104) installed above.

8. The radiator fixing bracket on the top cover of a wind turbine generator set as claimed in claim 7, characterized in that: An oblique support (202), the oblique support (202) being arranged on both sides of the condenser (104) and connected to the condenser (104) and the fixing bracket (201); A pull rope (203), one end of which is connected to the condenser (104).

9. The radiator fixing bracket on the top cover of a wind turbine generator set as claimed in claim 8, characterized in that: The condenser (104) has an air duct with a corrugated design.

10. The radiator fixing bracket on the top cover of a wind turbine generator set according to claim 9, characterized in that: At least one blade or a spoiler is installed around the condenser (104), and the blade or the spoiler changes the direction of the surrounding airflow.

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