Heat dissipation and dust prevention device of wind power frequency converter

Abstract

The invention discloses a wind power frequency converter heat dissipation and dust prevention device, which comprises a cabinet body, which sleeves the outer side of a frequency converter and comprises a heat conduction shell, the heat conduction shell is sleeved with a shell, and a cavity is formed between the shell and the heat conduction shell; the fixing frame is fixedly arranged in the cavity; a movable part is arranged on the fixed frame in the cavity; according to the frequency converter, through the arrangement of the multiple sets of moving parts, the frequency converter can achieve efficient heat dissipation, meanwhile, dust is prevented from entering the frequency converter, normal use of the frequency converter is guaranteed, due to the fact that the rotating cylinder controls the positions of the moving parts, whether the rotating cylinder is started or not can be selected according to the environment temperature change, and meanwhile when equipment does not need to be cooled, the rotating cylinder is opened. The position of the moving part can be controlled by the rotating drum to block the ventilation hole so as to ensure normal operation of the frequency converter.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power inverters, and in particular to a heat dissipation and dust prevention device for a wind power inverter. Background Art

[0002] The wind turbine inverter is one of the core components of the wind power generation system. It is responsible for converting the electric energy generated by the wind turbine into stable electric energy that meets the requirements of the power grid. Since the inverter generates heat during operation, effective heat dissipation measures are required to ensure its stable operation. Generally, the wind turbine inverter is cooled by setting heat dissipation holes, but the heat dissipation holes can easily cause dust to enter the interior, affecting the use of the equipment. At the same time, due to the different temperatures in the four seasons, when the temperature is low, the wind turbine inverter needs to stop dissipating heat to increase the equipment temperature and ensure that the equipment can operate normally at low temperatures. Summary of the invention

[0003] In view of the above problems existing in the existing heat dissipation and dust prevention device of the wind power inverter, the present invention is proposed.

[0004] Therefore, an object of the present invention is to provide a heat dissipation and dust prevention device for a wind power inverter.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising:

[0006] The cabinet is sleeved on the outside of the frequency converter, and comprises a heat-conducting shell, the heat-conducting shell is sleeved with an outer shell, and a cavity is formed between the outer shell and the heat-conducting shell;

[0007] A fixing frame, which is fixed in the cavity;

[0008] Wherein, a movable part is arranged on the fixing frame inside the cavity.

[0009] As a preferred solution of the heat dissipation and dust prevention device for wind power inverter of the present invention, the cavity includes side cavities located on both sides of the inverter, and a plurality of ventilation holes are provided at positions corresponding to the side cavities of the shell.

[0010] As a preferred solution of the wind power inverter heat dissipation and dust prevention device of the present invention, the fixing frame includes a horizontal plate arranged in the side cavity, and a plurality of groups of the horizontal plates are connected to vertical plates, and the plurality of groups of the horizontal plates and vertical plates divide the side cavity into a plurality of groups of cells;

[0011] The movable part comprises a moving part located in the cell cavity, the moving part can be moved from one side of the ventilation hole to the other side, and the moving part is in contact with the side wall of the cell cavity.

[0012] As a preferred solution of the heat dissipation and dust prevention device for wind power inverter of the present invention, the plurality of groups of moving parts located on the same layer are connected by connecting rods.

[0013] As a preferred solution of the heat dissipation and dust prevention device for wind power inverter of the present invention, wherein: the cavity also includes a long cavity located at the back of the inverter;

[0014] A plurality of groups of vertical plates located near the back of the frequency converter are longitudinally connected by a connecting frame, and the connecting frame is located in the long cavity.

[0015] As a preferred solution of the wind power inverter heat dissipation and dust prevention device of the present invention, it further comprises an adjustment part, and the connecting frame is connected to the adjustment part;

[0016] The adjusting part can drive multiple groups of moving parts located on the same side to move synchronously through the connecting frame.

[0017] As a preferred solution of the heat dissipation and dust prevention device for the wind power inverter of the present invention, the adjustment part includes a rotating drum located in the long cavity, an annular groove provided in the rotating drum, and a driven member plugged into the annular groove;

[0018] Wherein, the driven member is connected to the connecting frame.

[0019] As a preferred solution of the wind power inverter heat dissipation and dust prevention device of the present invention, the annular groove is divided into a first section and a second section, the first section and the second section are symmetrically arranged, and both ends of the first section and the second section are connected.

[0020] As a preferred solution of the wind turbine inverter heat dissipation and dust prevention device of the present invention, the drum is provided with a transverse groove on one side wall of the annular groove, a blocking part is provided in the transverse groove, and two groups of the blocking parts are equidistantly arranged radially along the central axis of the drum.

[0021] As a preferred solution of the heat dissipation and dust prevention device for a wind power inverter of the present invention, a plurality of through grooves are provided on both sides of the heat-conducting shell.

[0022] The beneficial effects of the present invention are as follows: through the arrangement of multiple groups of moving parts, the frequency converter can achieve efficient heat dissipation while preventing dust from entering the frequency converter, thereby ensuring the normal use of the frequency converter. Since the rotating drum controls the position of the moving parts, it is possible to choose whether to turn on the rotating drum according to changes in ambient temperature. At the same time, when there is no need to dissipate heat for the equipment, the rotating drum can control the position of the moving parts and block the ventilation holes to ensure the normal operation of the frequency converter. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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:

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0025] Figure 2 It is a cross-sectional view of the housing in the present invention.

[0026] Figure 3 It is a structural schematic diagram of the adjustment part in the present invention.

[0027] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle.

[0028] Figure 5 It is a structural schematic diagram of the annular groove in the present invention.

[0029] Figure 6 It is a schematic structural diagram of the blocking part in the present invention. DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] Example 1

[0035] Reference Figure 1-Figure 3 , provides a wind power inverter heat dissipation and dust prevention device, including,

[0036] The cabinet 100 is sleeved on the outside of the inverter, and includes a heat-conducting shell 101, a shell 102 sleeved on the heat-conducting shell 101, and a cavity 103 between the shell 102 and the heat-conducting shell 101;

[0037] A fixing frame 200, which is fixed in the cavity 103;

[0038] Wherein, a movable part 300 is disposed inside the cavity 103 and on the fixing frame 200;

[0039] The heat-conducting shell 101 is sleeved on the outside of the inverter. The heat-conducting shell 101 and the outer shell 102 are connected by a plate with a certain width, so that a cavity 103 is formed between the outer wall of the heat-conducting shell 101 and the inner wall of the outer shell 102. The fixing frame 200 is located on both sides of the inverter. After the heat-conducting shell 101 absorbs the heat of the inverter, the heat can be discharged through the outer shell 102, and the movable part 300 can move in the fixing frame 200 to increase the air flow rate in the cavity 103 and improve the heat dissipation effect of the equipment.

[0040] In this embodiment, when preparing the cabinet 100 , the heat-conducting shell 101 can be attached to the plane 501 b of the inverter as much as possible, and the heat-conducting shell 101 is made of a high thermal conductivity material to further improve the heat conduction efficiency of the inverter.

[0041] Furthermore, the cavity 103 includes side cavities 103a located on both sides of the inverter, and the housing 102 and the side cavities 103a are provided with a plurality of ventilation holes 104 at positions corresponding to the positions;

[0042] In this embodiment, the connection between the outer shell 102 and the heat-conducting shell 101 is a sealed connection. By opening multiple sets of ventilation holes on the outer shell 102, when the heat of the device is absorbed by the heat-conducting shell 101, the heat can be discharged through the ventilation holes 104.

[0043] Furthermore, the fixing frame 200 includes a horizontal plate 201 disposed in the side cavity 103a, and vertical plates 202 are connected to multiple groups of horizontal plates 201, and the multiple groups of horizontal plates 201 and vertical plates 202 divide the side cavity 103a into multiple groups of cells 203;

[0044] The movable part 300 includes a moving member 301 located in the cell cavity 203. The moving member 301 can move from one side of the ventilation hole 104 to the other side, and the moving member 301 is in contact with the side wall of the cell cavity 203.

[0045] Multiple groups of horizontal plates 201 are fixedly arranged at equal intervals in the longitudinal direction inside each group of side cavities 103a. The peripheries of the horizontal plates 201 are fixedly connected to the heat-conducting shell 101 and the outer shell 102 respectively. One or more groups of vertical plates 202 are arranged in the multiple groups of long cells separated by the vertical plates 202. If there are multiple groups of vertical plates 202, they are evenly distributed. A moving member 301 is slidably arranged in each group of cells 203. Since the moving member 301 is in contact with the two side walls of the cell 203;

[0046] When the moving part 301 moves toward one end of the cell cavity 203, the gas between the inner wall of the cell cavity 203 and the moving part 301 is squeezed out. When the moving part 301 passes through the ventilation hole 104 and continues to move forward, the external cold air is drawn into the cell cavity 203, so that when the moving part 301 slides back and forth in the cell cavity 203, the fluidity of the gas in the cell cavity 203 can be increased, and the exhaust effect of the hot air in the cavity 103 is improved. At the same time, the cold air enters the cell cavity 203 and can contact with the heat-conducting shell 101, thereby absorbing the heat of the heat-conducting shell 101, thereby improving the heat absorption efficiency of the heat-conducting shell 101 for the device, and thus being able to efficiently dissipate heat from the device;

[0047] Furthermore, multiple groups of moving parts 301 located on the same layer are connected by connecting rods 302; the two ends of the connecting rods 302 are fixedly connected to the two groups of moving parts 301 respectively. At the same time, through holes corresponding to the connecting rods 302 are opened on the vertical plate 202 to facilitate the connection between the connecting rods 302 and the moving parts 301. Through the setting of the connecting rods 302, the moving parts 301 located on the same layer can move synchronously, further increasing the heat exchange efficiency.

[0048] Furthermore, the cavity 103 also includes a long cavity 103b located at the back of the inverter; the plurality of vertical plates 202 located near the back of the inverter are longitudinally connected by a connecting frame 303, and the connecting frame 303 is located in the long cavity 103b;

[0049] The connecting frame 303 is fixedly connected to multiple groups of vertical plates 202 located at the end, and further connects the vertical plates 202 located at the same side, so that pulling one group of connecting frames 303 can drive multiple groups of moving parts 301 to move synchronously.

[0050] In this embodiment, a rotatable door is installed on the front of the cabinet 100, and a lock structure is provided between the door and the cabinet 100, so that a relatively closed space can be formed between the door and the cabinet 100 to reduce dust from entering the inverter. At the same time, the inverter can be repaired by opening the door.

[0051] By providing multiple groups of moving parts 301, the frequency converter can achieve efficient heat dissipation while preventing dust from entering the frequency converter, thereby ensuring the normal use of the frequency converter.

[0052] Example 2

[0053] Reference Figure 1-Figure 5 , this embodiment is different from the first embodiment in that: it also includes an adjustment portion 400, and the connecting frame 303 is connected to the adjustment portion 400;

[0054] The adjusting part 400 can drive multiple groups of moving parts 301 on the same side to move synchronously through the connecting frame 303;

[0055] The adjusting part 400 is arranged in the long cavity 103b and is connected to an external driving member. The driving member can provide power for the adjusting part 400 so that the adjusting part 400 drives the two groups of connecting frames 303 to move synchronously, thereby driving the multiple groups of moving parts 301 to slide.

[0056] Furthermore, the adjusting portion 400 includes a rotating drum 401 located in the long cavity 103b, an annular groove 402 opened in the rotating drum 401, and a driven member 403 inserted in the annular groove 402;

[0057] Wherein, the follower 403 is connected to the connecting frame 303;

[0058] A rotating drum 401 is rotatably connected in the long cavity 103b, and one rotating end is connected to the driving member. An annular groove 402 is radially opened along the rotating drum 401 and is connected to the connecting frame 303 through a follower 403. When the rotating drum 401 rotates, the position of the moving member 301 is fixed, so that the follower 403 is limited, and the connecting frame 303 is driven to move under the synchronous restriction of the annular groove 402.

[0059] Furthermore, the annular groove 402 is divided into a first section 402a and a second section 402b, the first section 402a and the second section 402b are symmetrically arranged, and both ends of the first section 402a and the second section 402b are connected;

[0060] The follower 403 includes a fixing plate 403a connected to the connecting frame 303, and a fixing column 403b is fixedly connected to one side of the fixing plate 403a, and the fixing column 403b is inserted into the annular groove 402;

[0061] The first section 402a and the second section 402b are symmetrical with the diameter line of the rotating drum 401 perpendicular to the ground as the center line. The first section 402a and the second section 402b are both arranged in an inclined manner with one end close to the heat-conducting shell 101 and the other end close to the outer shell 102, so that when the rotating drum 401 rotates, the follower 403 can slide laterally when limited by the moving part 301, thereby allowing the multiple groups of moving parts 301 to slide synchronously; and because the rotating drum 401 is connected to the external driving part, the multiple groups of moving parts 301 slide automatically, reducing the manual burden.

[0062] Furthermore, a transverse groove 404 is formed on one side wall of the rotating drum 401 located at the annular groove 402, and a blocking portion 500 is disposed in the transverse groove 404. Two groups of blocking portions 500 are equidistantly disposed radially along the central axis of the rotating drum 401.

[0063] The blocking part 500 includes a moving block 501 slidably arranged in the transverse groove 404, a spring 502 is arranged between the end of the moving block 501 and the end wall of the transverse groove 404, an inclined surface 501a is arranged at the end of the moving block 501, and the opposite surface of the inclined surface 501a is arranged as a plane 501b, and the inclined surfaces 501a of the two groups of moving blocks 501 face oppositely, so that when the rotating drum 401 rotates in the first direction, the inclined surfaces 501a of the two groups of moving blocks 501 are in contact with the fixed column 403b, and after the inclined surfaces 501a contact the fixed column 403b, the moving block 501 shrinks into the transverse groove 404, so that the rotating drum 401 can rotate normally. When the temperature is low, the drum 401 can be rotated in the second direction in the opposite direction. At this time, the plane 501b corresponds to the fixed column 403b. When the plane 501b of the moving block 501 conflicts with the fixed column 403b, the drum 401 is stuck and cannot continue to rotate. At this time, the rotation of the drum 401 is stopped. When the drum 401 stops, the moving member 301 stops moving synchronously. At the same time, the moving member 301 is locked in position by the drum 401. At this time, the moving member 301 corresponds to the position of the ventilation hole 104, and then the ventilation hole 104 is blocked to reduce the heat loss in the cavity 103 and ensure the required temperature for the operation of the inverter.

[0064] In this embodiment, the width of the moving member 301 is greater than the diameter of the ventilation hole 104 , so that it can block the ventilation hole 104 .

[0065] The rest of the structure is the same as that of Example 1.

[0066] By controlling the position of the moving part 301 by the rotating drum 401, it is possible to choose whether to turn on the rotating drum 401 according to changes in ambient temperature. At the same time, when there is no need to dissipate heat for the equipment, the rotating drum 401 can control the position of the moving part 301 and block the ventilation hole 104 to ensure the normal operation of the inverter.

[0067] Example 3

[0068] Reference Figure 1-Figure 6 , this embodiment is different from the above embodiments in that: a plurality of through grooves 105 are provided on both sides of the heat-conducting shell 101;

[0069] The through slot 105 penetrates the heat-conducting shell 101, and both the upper and lower ends of the through slot 105 are in the cell cavity 203 at the end. The through slot 105 allows part of the temperature of the device to directly enter the cavity 103. At the same time, when the temperature is low and the ventilation hole 104 is blocked, the through slot 105 can make the air in the side cavity 103a flow up and down, thereby making the temperature around the inverter more uniform.

[0070] At the same time, a filter 106 is added to the ventilation hole 104 to prevent dust from entering the cavity 103 and affecting the heat dissipation efficiency;

[0071] In this embodiment, the filter 106 is made of a soft film material. When the air in the cell cavity 203 is exhausted outward, the filter 106 can be back-blown, thereby cleaning the filter 106 and preventing it from being blocked. At the same time, due to the material of the filter 106, when air with a certain pressure passes through the filter 106, it bulges outward, which can further improve the blocking effect.

[0072] The rest of the structure is the same as that of Example 2.

[0073] 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, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, 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 described herein that performs the function, 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 several modifications still falling within the scope of the appended claims.

[0074] 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.

[0075] 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.

[0076] 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 wind power inverter heat dissipation and dust prevention device, characterized in that: include, A cabinet (100) is sleeved on the outside of the frequency converter, comprising a heat-conducting shell (101), the heat-conducting shell (101) being sleeved with an outer shell (102), and a cavity (103) being provided between the outer shell (102) and the heat-conducting shell (101); A fixing frame (200) fixedly disposed in the cavity (103); Wherein, a movable part (300) is provided inside the cavity (103) and on the fixing frame (200).

2. The heat dissipation and dust prevention device for a wind power inverter according to claim 1, characterized in that: The cavity (103) comprises side cavities (103a) located on both sides of the frequency converter, and the housing (102) is provided with a plurality of groups of ventilation holes (104) at positions corresponding to the side cavities (103a).

3. The heat dissipation and dust prevention device for a wind power inverter according to claim 2, characterized in that: The fixing frame (200) comprises a horizontal plate (201) arranged in the side cavity (103a), and vertical plates (202) connected to multiple groups of the horizontal plates (201), wherein the multiple groups of the horizontal plates (201) and the vertical plates (202) divide the side cavity (103a) into multiple groups of cells (203); The movable part (300) comprises a moving part (301) located in the cell cavity (203); the moving part (301) can move from one side of the ventilation hole (104) to the other side, and the moving part (301) is in contact with the side wall of the cell cavity (203).

4. The heat dissipation and dust prevention device for a wind power inverter according to claim 3, characterized in that: A plurality of groups of moving parts (301) located on the same layer are connected via connecting rods (302).

5. The heat dissipation and dust prevention device for a wind power inverter according to claim 4, characterized in that: The cavity (103) further comprises a long cavity (103b) located at the back of the frequency converter; A plurality of groups of vertical plates (202) located near the back of the frequency converter are connected longitudinally via a connecting frame (303), and the connecting frame (303) is located in the long cavity (103b).

6. The heat dissipation and dust prevention device for a wind power inverter according to claim 5, characterized in that: It also includes an adjusting portion (400), and the connecting frame (303) is connected to the adjusting portion (400); The adjusting portion (400) can drive multiple groups of moving parts (301) located on the same side to move synchronously via the connecting frame (303).

7. The heat dissipation and dust prevention device for a wind power inverter according to claim 6, characterized in that: The regulating part (400) comprises a rotating drum (401) located in the long cavity (103b), an annular groove (402) provided in the rotating drum (401), and a driven member (403) inserted into the annular groove (402); Wherein, the driven member (403) is connected to the connecting frame (303).

8. The heat dissipation and dust prevention device for a wind power inverter according to claim 7, characterized in that: The annular groove (402) is divided into a first section (402a) and a second section (402b), the first section (402a) and the second section (402b) are symmetrically arranged, and the first section (402a) and the second section (402b) are connected at both ends.

9. The heat dissipation and dust prevention device for a wind power inverter according to claim 7 or 8, characterized in that: A transverse groove (404) is formed on one side wall of the rotating drum (401) located on the annular groove (402), and a blocking portion (500) is provided in the transverse groove (404). Two groups of the blocking portions (500) are equidistantly arranged radially along the central axis of the rotating drum (401).

10. The wind power inverter heat dissipation and dust prevention device according to claim 4 or 6, characterized in that: Multiple groups of through grooves (105) are provided on both sides of the heat-conducting shell (101).

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