JP3238797U - Water-cooled heat dissipation structure for variable pitch mechanism cabinet of wind power generator - Google Patents

Abstract

A water-cooled heat dissipation structure for a variable pitch mechanism cabinet of a wind power generator is provided. A water-cooled heat dissipation structure for a variable pitch mechanism cabinet of a wind power generator comprises a variable pitch mechanism cabinet, a heat dissipation frame attached to the back of the variable pitch mechanism cabinet, and for connecting the variable pitch mechanism cabinet to the heat dissipation frame. The functional frame has a water cooling cavity, the flow case is installed on both sides of the water cooling cavity, the inside of the flow case is a hollow structure, the top of the flow case is provided with a fitting groove, and the fitting groove is A flow rotating shaft is installed inside the flow case, an adjustment frame is installed on one side of the flow case, and a plurality of water cooling pipes are installed inside the adjustment frame to match the flow case and the water cooling cavity, and the side walls of the function frame are evenly distributed. A plurality of distributed functional holes are drilled. By using the potential energy of the rotation of the windmill hub, it completely prevents the flow of water from stopping and freezing. [Selection drawing] Fig. 1

Description

TECHNICAL FIELD The present invention relates to the technical field of wind power generators, and more particularly to a water-cooled heat dissipation structure for a variable pitch mechanism cabinet of wind power generators.

The variable pitch mechanism cabinet of the wind power generator is usually installed in the hub at the top of the tower. It is often necessary to connect computers to variable pitch mechanical cabinets.

The heat dissipation of the conventional variable-pitch mechanism cabinet usually uses heat conduction with a large heat sink on the back to promote air convection and carry away the heat to achieve the purpose of heat dissipation. Based on this, it is usually necessary to periodically apply heat-dissipating silicone grease to ensure the heat-dissipating effect. The natural air-cooled inverter provided by Patent Document 1 solves the problem of heat concentration at the heat source, raises the upper limit of the heat dissipation threshold, eliminates the need for forced air cooling by a fan, and reduces the number of parts in the inverter, so the inverter as a whole Reduce the volume and reduce the manufacturing cost of the inverter, but still use the heat dissipation fin type heat dissipation structure.

The water cooling structure mounted in the variable pitch mechanism cabinet is seldom used to dissipate the heat of inverters etc. Water cooling dissipates during the operation of the wind turbine, when the temperature is very low, the water cooling fluid inside freezes. Therefore, the normal flow rate cannot be maintained, and the installation and removal of the water-cooled heat-dissipating structure is troublesome.

Chinese Patent Publication No. CN112994413A

SUMMARY OF THE INVENTION The purpose of the present invention is to propose a water-cooled heat dissipation structure for a variable pitch mechanism cabinet of a wind power generator to solve the deficiencies existing in the prior art.

In order to achieve the above object, the present invention takes the following technical measures.

A water-cooled heat dissipation structure for a variable pitch mechanism cabinet of a wind power generator, comprising a variable pitch mechanism cabinet, a heat dissipation frame attached to the back of the variable pitch mechanism cabinet, and a function for connecting the variable pitch mechanism cabinet to the heat dissipation frame. a frame, wherein the functional frame has a water-cooled cavity, a flow case is provided on both sides of the water-cooled cavity, the inside of the flow case has a hollow structure, and a fitting groove is provided on the top of the flow case; a flow rotation shaft is provided inside the fitting groove, an adjustment frame is provided on one side of the flow case, and a plurality of water cooling pipes are provided inside the adjustment frame to match the flow case and the water cooling cavity; A plurality of evenly distributed functional holes are drilled in the sidewall of the functional frame.

Further, a vibrating sleeve is provided in the center of the water-cooled cavity, a vibrating ball matching the vibrating sleeve is provided inside the vibrating sleeve, and the vibrating sleeve is made of rubber material.

Further, the flow rotating shaft passes through the cavity of the flow case, and an outer wall of the flow rotating shaft is provided with a flow vane located in the cavity of the flow case, so that the flow rotating shaft and the flow case are separated from each other. The gap is connected and sealed through an O-type waterproof seal ring.

Further, both ends of the flow rotation shaft extend to the outside of the flow case and are respectively connected to heat dissipation vanes and rotation motors.

Further, the functional frame has a thickness of 3-5 cm, and the functional holes are used to install connectors for connecting the variable-pitch mechanism cabinet and the heat-dissipating frame, and to dissipate heat. can be distributed in the space between the variable pitch mechanism cabinet and the heat dissipation frame through functional holes.

In addition, the functional frame has a rectangular structure and is joined by a plurality of L-shaped brackets, and both ends of the L-shaped bracket can be cut to reduce the rectangular area, and each of the L-shaped bracket pairs The gap is detachably fixed.

Compared with the prior art, the advantageous effect of the present invention is that the heat dissipation structure of the variable pitch mechanism cabinet is changed to the water-cooled heat dissipation with remarkable effect by installing the heat dissipation frame and the functional frame, and the conventional fins It can be distinguished from air-cooled heat dissipation, and can be applied to cabinets that can be installed with fin heat dissipation (variable pitch inverter, PLC control cabinet, etc.). Make the most of the potential energy of rotation of the hub, rotate the heat dissipation liquid according to the potential energy of rotation, convert the potential energy of rotation into mechanical energy and use it for heat dissipation, and use the potential energy of rotation at the same time. By doing so, it is possible to completely prevent the water from stopping and freezing, so that the water-cooled liquid can continue to maintain a moderate flow rate, and the distribution of the water-cooled pipes through the assembly structure of the functional frame. can be arranged to better suit the operating environment, while the flexible structure of the functional frame makes installation and removal of equipment more convenient, and can be installed and removed at any time without affecting the overall stability. , equipment becomes more practical.

The accompanying drawings are intended to assist in further understanding of the present invention, constitute a part of this specification, and are used to interpret the invention together with the embodiments of the invention. does not constitute an unreasonable limitation.

1 is a schematic diagram of a water-cooled heat dissipation structure for a variable pitch mechanism cabinet of a wind power generator proposed by the present invention; FIG. 1 is a cross-sectional view of a water-cooled heat dissipation structure for a variable pitch mechanism cabinet of a wind power generator proposed by the present invention; FIG. FIG. 1 is a cross-sectional view of a flow case of a water-cooled heat dissipation structure for a variable pitch mechanism cabinet of a wind power generator proposed by the present invention; FIG. 3 is a schematic view of the functional frame of the water-cooled heat dissipation structure for the variable-pitch mechanism cabinet of the wind power generator proposed by the present invention, with the water-cooled pipe installed; 1 is a schematic view of a heat dissipation frame of a water-cooled heat dissipation structure for a variable pitch mechanism cabinet of a wind power generator proposed by the present invention; FIG.

The following clearly and completely describes the technical means in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention, Needless to say, it is not all examples.

In the description of the present invention, the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer", etc. The orientation or positional relationship shown is the orientation or positional relationship shown based on the drawings, and is merely for the purpose of simplifying the description of the present invention. It should not be construed as a limitation on the present invention as it is not intended or implied to be constructed or operated in any particular orientation.

(Example 1)
1 and 5, a water-cooled heat dissipation structure for a variable pitch mechanism cabinet of a wind power generator, comprising: a variable pitch mechanism cabinet 1; a heat dissipation frame 2 attached to the back of the variable pitch mechanism cabinet 1; a functional frame 3 for connecting the pitch mechanism cabinet 1 to the heat radiating frame 2; the functional frame 3 comprises a water cooling cavity 4; The flow case 5 has a hollow structure, a fitting groove 6 is provided at the top of the flow case 5 , a flow rotation shaft 7 is provided inside the fit groove 6 , and an adjustment frame 8 is provided on one side of the flow case 5 . a plurality of water-cooling pipes 9 corresponding to the flow case 5 and the water-cooling cavity 4 are installed inside the adjusting frame 8, and a plurality of function holes 10 evenly distributed in the side wall of the function frame 3 are drilled. be done. In the above design, the water-cooled pipe 9 is either rectangular structure, cylindrical structure or hollow sheet structure, which can be closely attached to the heat-dissipating structural part of the variable pitch mechanism cabinet 1 according to the heat-dissipating needs. The thickness of the water cooling cavity 4 can be customized according to different heat dissipation structures, and the height of the protrusion from the surface can be customized. The heat of the variable pitch inverter heat-generating part is carried away more quickly by making the most of the water-cooled liquid.

(Example 2)
Referring to FIGS. 2 to 4, according to the first embodiment, a vibration sleeve 11 is installed in the center of the water-cooled cavity 4, and a vibration ball 12 matching the vibration sleeve 11 is installed inside the vibration sleeve 11. and the vibration sleeve 11 is made of a rubber material. The flow rotation shaft 7 passes through the cavity of the flow case 5, and the flow vanes 13 located in the cavity of the flow case 5 are provided on the outer wall of the flow rotation shaft 7. The flow case 5 is connected and sealed via an O-type waterproof seal ring. Both ends of the flow rotation shaft 7 extend to the outside of the flow case 5 and are connected to heat radiation vanes 15 and a rotation motor, respectively. The functional frame 3 has a thickness of 3 to 5 cm, and the functional holes 10 are used to install connectors for connecting the variable pitch mechanism cabinet 1 and the heat dissipation frame 2 and to dissipate heat. Water cooling pipes 9 can be distributed in the space between the variable pitch mechanism cabinet 1 and the heat dissipation frame 2 through functional holes 10 . The functional frame 3 has a rectangular structure and is joined by a plurality of L-shaped brackets 14. Both ends of the L-shaped bracket 14 can be cut to reduce the area of the rectangle, and each L-shaped bracket 14 pairs are detachably fixed. As can be seen from the above design, by cutting and truncating both ends of the L-shaped bracket 14, the overall shape of the functional frame 3 can be reduced as a whole to adapt to more installation environments, and at the same time The functional hole 10 serves as a port for the water-cooled pipe 9, and not only can the water-cooled pipe 9 be arranged in the limited space of the functional frame 3, but also the connectors at different positions can be added through the functional hole 10. When the variable pitch mechanism cabinet 1 and the heat dissipation frame 2 have more fixing methods, such as L-shaped seat, T-shaped seat, U-shaped seat, etc., the four L-shaped brackets 14 of the functional frame 3 are assembled During installation and removal, the L-shaped bracket 14 at one or more corners can be removed at will to achieve a more flexible and convenient mounting and dismounting method.

The working principle and application flow of the present invention: the heat dissipation frame 2 is attached to the back of the variable pitch mechanism cabinet 1 and closely attached to the heat generating part, the cooling liquid is injected into the water cooling cavity 4 in advance, and the water cooling pipe 9 is inserted into the adjustment frame 8. Alternatively, it is connected in the height space supported by the functional frame 3, the water cooling pipes 9 are arranged, and the functional holes 10 that are not used for installation are reserved every two functional holes 10 to ensure the air convection capacity in the space. , carry away heat quickly and retain the ability of air cooling. At the same time, one end of the flow rotation shaft 7 is installed with a heat dissipation vane 15, and the other end is installed with a matching rotation motor, the rotation motor is connected to the same power supply as the variable pitch mechanism cabinet 1 or an external power supply, and is connected to the corresponding motor control module. When the wind turbine starts running, the variable pitch mechanism cabinet 1 and the heat dissipation frame 2 can follow the rotation of the hub to rotate, and under the potential energy of rotation, the water cooling liquid in the water cooling cavity 4 will also When there is no electric power supply, the liquid flow will generate the potential energy of the flow. to rotate the fluidized rotating shaft 7 through, set the rotation speed condition of the rotating motor in advance, turn it on or off within a certain rotation speed range, and after the fluidized rotation shaft 7 rotates to a certain rotation speed, The rotary motor starts to rotate the flow rotary shaft 7, or the motor rotary shaft is used to reduce the rotation speed due to the potential energy of the liquid, and the power supply is not connected or the motor is automatically started. Even without it, the water-cooled liquid can stay in one flow rate range for a long time, preventing freezing of the liquid that has not flowed for a long time. The rotation of the heat radiating blades 15 has a fan function, can maintain the air cooling function, and increases the air cooling heat radiation efficiency in the limited space of the functional frame 3. The velocity of the liquid can be determined by measuring the number of revolutions. Also, while the hub rotates the variable pitch mechanism cabinet 1 of the facility, the vibrating balls 12 in the water cooling cavity 4 roll and collide irregularly in the vibrating sleeve 11, also under the potential energy of rotation. , the vibrating sleeve 11 can be moved to press the inner space of the water cooling cavity 4 to make the liquid flow, and the water flow in the water cooling cavity 4 will be turbulent to prevent freezing and solidification, and the flow case 5 on both sides This also prevents the difference in the circulation speed of the liquid from becoming excessive, eliminating uneven heat dissipation during the heat dissipation process, finally completing the heat dissipation, and easily completing the attachment and detachment through the functional frame 3 during attachment and detachment.

The above are only preferred embodiments of the present invention, but the protection scope of the present invention is not limited to such embodiments, and anyone who is familiar with the art can apply the technical features disclosed by the present invention. In scope, equivalent replacements or modifications made according to the technical means and technical ideas of the present invention shall be covered within the protection scope of the present invention.

10 Function hole 1 Variable pitch mechanism cabinet 11 Vibration sleeve 12 Vibration ball 13 Fluid vane 14 L-shaped bracket 15 Radiation vane 2 Radiation frame 3 Functional frame 4 Water cooling cavity 5 Fluid case 6 Fitting groove 7 Fluid rotating shaft 8 Adjusting frame 9 Water cooling tube

Claims (6)

A water-cooled heat dissipation structure for a variable pitch mechanism cabinet of a wind power generator, comprising: a variable pitch mechanism cabinet (1); a heat dissipation frame (2) attached to the back of said variable pitch mechanism cabinet (1); a functional frame (3) for connecting the mechanism cabinet (1) to the heat dissipation frame (2); the functional frame (3) comprises a water cooling cavity (4); on both sides of the water cooling cavity (4) A flow case (5) is provided, the inside of the flow case (5) has a hollow structure, the top of the flow case (5) is provided with a fitting groove (6), and the inside of the fitting groove (6) is provided. is provided with a flow rotation shaft (7), and an adjustment frame (8) is provided on one side of the flow case (5), and the flow case (5) and the water cooling cavity ( 4) A variable pitch mechanism cabinet for a wind power generator, provided with a plurality of water cooling pipes (9) aligned with the above, and having a plurality of functional holes (10) evenly distributed on the side wall of said functional frame (3). Water-cooled heat dissipation structure. A vibration sleeve (11) is provided in the center of the water cooling cavity (4), and a vibration ball (12) is provided inside the vibration sleeve (11) to match the vibration sleeve (11). The water-cooled heat dissipation structure for variable pitch mechanism cabinet according to claim 1, characterized in that (11) is made of rubber material. The flow rotation shaft (7) passes through the cavity of the flow case (5), and flow blades (13) located in the cavity of the flow case (5) are formed on the outer wall of the flow rotation shaft (7). The variable pitch mechanism cabinet according to claim 1, characterized in that the flow rotation shaft (7) and the flow case (5) are connected and sealed through an O-shaped waterproof seal ring. Water-cooled heat dissipation structure. 4. The variable pressure sensor according to claim 3, characterized in that both ends of the flow rotation shaft (7) are extended to the outside of the flow case (5) and respectively connected to heat dissipation vanes (15) and a rotation motor. Water-cooled heat dissipation structure for pitch mechanism cabinet. The function frame (3) has a thickness of 3-5 cm, and the function hole (10) is provided with a connector for connecting the variable pitch mechanism cabinet (1) and the heat dissipation frame (2); Used for heat dissipation, the water cooling pipes (9) can be distributed in the space between the variable pitch mechanism cabinet (1) and the heat dissipation frame (2) through the functional holes (10). The water-cooled heat dissipation structure for variable-pitch mechanism cabinet as claimed in claim 1, characterized in that: The functional frame (3) has a rectangular structure and is joined by a plurality of L-shaped brackets (14), both ends of the L-shaped brackets (14) can be cut to reduce the rectangular area, The water-cooled heat dissipation structure for variable pitch mechanism cabinet according to claim 1, characterized in that each pair of L-shaped brackets (14) is detachably fixed.

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