Converter for doubly-fed air-cooled power generation

Abstract

The utility model relates to the technical field of converters, and particularly discloses a converter for doubly-fed air-cooled power generation, which comprises a wind power converter cabinet main body, a first partition is arranged at the top of one side in the wind power converter cabinet main body, and a second partition is arranged at the bottom of one side, close to the second partition, in the wind power converter cabinet main body. A third partition is arranged at the top of the side, away from the first partition, in the wind power converter cabinet body, a fourth partition is arranged at the bottom of the side, close to the third partition, in the wind power converter cabinet body, and a fifth partition is arranged in the middle of the interior of the wind power converter cabinet body. According to the utility model, the interior of the wind power converter cabinet main body is divided into five zones, and the five zones are classified and arranged according to the functions and forms of internal devices, so that reasonable division and placement are realized, the space of the cabinet body is fully utilized, the overall structure is compact, the occupied space is small, and the heat dissipation rationality of the devices is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of converters, in particular to a double-fed air-cooled converter for power generation. Background Art

[0002] Converters are electrical devices that change the voltage, frequency, number of phases and other electrical quantities or characteristics of a power system. They are widely used in power transmission systems. For example, converters are needed in wind power generation systems. In the application process, wind power converters serve as a link between wind turbines and power grids. They can convert the electrical energy generated by wind turbines to meet the requirements of power transmission and output it to the power grid.

[0003] When in use, the existing power generation inverter is usually composed of functional devices such as circuit breakers, contactors, rectifier modules, inverter modules, and filter modules. In the traditional structure, the layout of each component is unreasonable, the space occupied is large, and the air cooling effect is poor, especially the power unit module has difficulty in heat dissipation. Utility Model Content

[0004] The utility model aims to provide a double-fed air-cooled power generation converter, which solves the above-mentioned background problems by zoning and placing and adopting vertical air ducts.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A double-fed air-cooled power generation converter, comprising a wind power converter cabinet body,

[0007] A first partition is provided at the top of one side of the interior of the wind power converter cabinet body, and a second partition is provided at the bottom of the interior of the wind power converter cabinet body close to the second partition. A third partition is provided at the top of the interior of the wind power converter cabinet body away from the first partition, and a fourth partition is provided at the bottom of the interior of the wind power converter cabinet body close to the third partition. A fifth partition is provided at the middle position of the interior of the wind power converter cabinet body.

[0008] One side of the top of the wind power converter cabinet body is connected to a discharge bin, and the discharge bin is provided with a regulating mechanism for guiding the airflow.

[0009] As a further solution of the utility model: a circuit breaker and a contactor are arranged inside the first partition, a control unit is arranged inside the second partition, 9 groups of power unit modules are arranged inside the third partition, a stainless steel resistor, a machine-side inductor, a chopper module and a cooling fan are arranged inside the fourth partition, and a grid-side inductor is arranged inside the fifth partition.

[0010] As a further solution of the utility model: the regulating mechanism includes an airflow guide bin, which is installed on a side of the discharge bin away from the wind power converter cabinet body, the airflow guide bin is communicated with the discharge bin, a mounting bin is installed on the top of the airflow guide bin, and blocking fin assemblies are evenly arranged on the bottom of the airflow guide bin, and the blocking fin assemblies pass through the airflow guide bin and extend to the interior of the mounting bin, and a worm gear is installed on the top of the blocking fin assembly.

[0011] As a further solution of the utility model: the central axis of the blocking fin assembly is perpendicular to the horizontal central axis of the airflow guide bin, and the blocking fin assembly is rotatably connected to the airflow guide bin and the installation bin respectively.

[0012] As a further solution of the utility model: the adjustment mechanism also includes a servo motor, which is installed at one end of the installation bin. The output end of the servo motor is connected to a rotating shaft, and the rotating shaft extends to the inside of the installation bin. A worm is evenly installed on the outside of the rotating shaft.

[0013] As a further solution of the utility model: the central axis of the rotating shaft coincides with the central axis of the worm, and the rotating shaft is rotatably connected to the mounting bin.

[0014] As a further solution of the utility model: the number of the worm gears is the same as the number of the blocking fin assemblies, and the worm gears are meshingly connected with the corresponding blocking fin assemblies.

[0015] Beneficial effects of the utility model:

[0016] (1) By dividing the main body of the wind power converter cabinet into five areas and classifying and arranging the internal components according to their functions and forms, reasonable division and placement can be achieved, thereby making full use of the cabinet space, making the overall structure compact and occupying less space, and at the same time increasing the rationality of heat dissipation of individual components;

[0017] (2) By arranging a cooling fan in the fourth partition and arranging a discharge bin on the top of the wind power converter cabinet body, external air enters through the cooling fan and is finally discharged through the discharge bin, thereby forming a vertical wind direction covering the interior of the wind power converter cabinet body from top to bottom, and forming an inclined wind direction covering the interior of the wind power converter cabinet body in the horizontal direction, thereby making the heat dissipation path shorter and the wind resistance smaller on the basis of ensuring comprehensive heat dissipation in the wind power converter cabinet body, thereby ensuring high heat dissipation efficiency;

[0018] (3) A plurality of blocking fin assemblies are arranged inside the airflow guide bin, and the blocking fin assemblies are rotatably connected to the airflow guide bin, so that the staff can adjust the inclination of the blocking fin assemblies according to whether there are similar equipment in the surrounding area, and then adjust the main air outlet direction, thereby avoiding excessive impact on similar equipment in the surrounding area. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the main cross-sectional structure of the utility model;

[0021] Figure 2 It is a side view structural schematic diagram of the utility model;

[0022] Figure 3 This utility model Figure 2 A schematic diagram of the enlarged structure at point A;

[0023] Figure 4 It is a rear view structural schematic diagram of the utility model;

[0024] Figure 5 It is a side view structural schematic diagram of the discharge bin of the utility model;

[0025] Figure 6 It is a three-dimensional structural schematic diagram of the airflow guide bin of the utility model.

[0026] In the figure: 1. first partition; 2. second partition; 3. third partition; 4. fourth partition; 5. fifth partition; 6. circuit breaker; 7. contactor; 8. control unit; 9. power unit module; 10. stainless steel resistor; 11. machine-side reactor; 12. chopper module; 13. grid-side reactor; 14. cooling fan; 15. discharge bin; 16. airflow guide bin; 17. installation bin; 18. blocking fin assembly; 19. worm gear; 20. servo motor; 21. rotating shaft; 22. worm; 23. wind power converter cabinet body. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Example 1

[0029] See also Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the utility model is a double-fed air-cooled power generation converter, including a wind power converter cabinet body 23, a first partition 1 is arranged at the top of one side inside the wind power converter cabinet body 23, and a second partition 2 is arranged at the bottom of the wind power converter cabinet body 23 near the second partition 2, a third partition 3 is arranged at the top of the wind power converter cabinet body 23 away from the first partition 1, and a fourth partition 4 is arranged at the bottom of the wind power converter cabinet body 23 near the third partition 3, and a fifth partition 5 is arranged at the middle position inside the wind power converter cabinet body 23;

[0030] A circuit breaker 6 and a contactor 7 are arranged inside the first partition 1, a control unit 8 is arranged inside the second partition 2, 9 groups of power unit modules 9 are arranged inside the third partition 3, a stainless steel resistor 10, a machine-side reactor 11, a chopper module 12 and a cooling fan 14 are arranged inside the fourth partition 4, and a grid-side reactor 13 is arranged inside the fifth partition 5;

[0031] Based on the functions of the devices in each partition, the first partition 1 can be used as a power cabinet, the second partition 2 can be used as a control cabinet, and the third partition 3, the fourth partition 4 and the fifth partition 5 can be unified as power cabinets, so that they can be clearly divided and placed in a centralized manner from the functional point of view;

[0032] One side of the top of the wind power converter cabinet body 23 is connected to a discharge bin 15;

[0033] The interior of the above-mentioned discharge bin 15 is provided with a fan part for assisting the exhaust to the outside, so that with the cooperation of the cooling fan 14, the external air can enter through the cooling fan 14 and be discharged through the discharge bin 15. At the same time, multiple groups of auxiliary discharge holes with smaller apertures are opened at both ends of the discharge bin 15. When the exhaust pressure is relatively large, the auxiliary discharge holes can assist in the discharge of the airflow, thereby ensuring heat dissipation. At the same time, based on the position of the discharge bin 15 and the cooling fan 14, a vertical wind direction covering the interior of the wind power converter cabinet body 23 can be formed in the upper and lower parts, and an inclined wind direction covering the interior of the wind power converter cabinet body 23 can be formed in the horizontal direction, thereby ensuring comprehensive heat dissipation of the wind power converter cabinet body 23. The heat dissipation path is shorter and the wind resistance is smaller.

[0034] Example 2

[0035] Based on the above embodiment 1, refer to Figure 2 , Figure 3 and Figure 6As shown, the discharge bin 15 is provided with an adjustment mechanism for guiding the airflow, and the adjustment mechanism includes an airflow guide bin 16, which is installed on the side of the discharge bin 15 away from the wind power converter cabinet body 23, and the airflow guide bin 16 is connected to the discharge bin 15, and a mounting bin 17 is installed on the top of the airflow guide bin 16, and blocking fin assemblies 18 are evenly arranged at the bottom of the airflow guide bin 16, and the blocking fin assemblies 18 penetrate the airflow guide bin 16 and extend to the inside of the mounting bin 17, and a worm gear 19 is installed on the top of the blocking fin assembly 18;

[0036] The central axis of the blocking fin assembly 18 is perpendicular to the horizontal central axis of the airflow guide chamber 16, and the blocking fin assembly 18 is rotatably connected to the airflow guide chamber 16 and the mounting chamber 17 respectively;

[0037] The inclination state of the blocking fin assembly 18 relative to the airflow guide bin 16 directly affects the exhaust direction of the airflow guide bin 16. When there is no similar equipment on the side of the wind power converter cabinet body 23, the blocking fin assembly 18 can be rotated to make the fins of the blocking fin assembly 18 parallel to the transverse axis of the airflow guide bin 16, so that the airflow is discharged directly to the side. In actual application, the wind power converter cabinet body 23 is often placed side by side with similar equipment. When there are similar equipment around the wind power converter cabinet body 23, the blocking fin assembly 18 can be rotated to make its fins form a corresponding angle with the transverse axis of the airflow guide bin 16, so that the airflow can be guided to the side rear or side front, thereby avoiding the hot air flow blowing to the surrounding similar equipment and causing excessive impact on it.

[0038] The adjustment mechanism further includes a servo motor 20, which is mounted at one end of the mounting bin 17, and the output end of the servo motor 20 is connected to a rotating shaft 21, and the rotating shaft 21 extends to the inside of the mounting bin 17, and a worm 22 is evenly mounted on the outside of the rotating shaft 21;

[0039] The central axis of the rotating shaft 21 coincides with the central axis of the worm 22, and the rotating shaft 21 is rotatably connected to the mounting bin 17;

[0040] The number of the worm gears 22 is the same as the number of the blocking fin assemblies 18, and the worm gears 22 are meshingly connected with the corresponding blocking fin assemblies 18;

[0041] The staff can control the servo motor 20 to drive the rotating shaft 21 and the multiple groups of worms 22 to rotate simultaneously, so that the multiple groups of blocking fin assemblies 18 can rotate in the same direction at the same time, thereby completing the task of adjusting the inclination of the blocking fin assemblies 18;

[0042] Furthermore, the servo motor 20 can be replaced by a manual damping handle or the like, and adjusted manually. At the same time, the spiral inclination angle of the worm 22 is set so that the worm wheel 19 cannot drive the worm 22 to rotate. Therefore, when it is replaced with a manual damping handle or the like for adjustment, the wind pressure on the fin assembly 18 is prevented from driving the rotating shaft 21 to rotate, thereby ensuring stability during use.

[0043] The working principle of the utility model is as follows: the device can be used by electrically connecting it to the wind power system. When in use, the cooling fan 14 and the fan in the discharge bin 15 are turned on, so that the external air continuously enters the wind power converter cabinet body 23 through the cooling fan 14 and is fully discharged through the discharge bin 15 and the airflow guide bin 16 thereon after flowing through the wind power converter cabinet body 23, thereby completing the heat dissipation task;

[0044] When similar equipment is arranged side by side around the main body 23 of the wind turbine converter cabinet, the staff can control the servo motor 20 to drive the rotating shaft 21 to rotate accordingly, so that multiple groups of blocking fin assemblies 18 rotate in the same direction at the same time, and form a certain angle with the transverse axis of the airflow guide bin 16, so as to guide the air discharged from the airflow guide bin 16 to the side rear or side front, so as to prevent the hot air from causing excessive impact on similar equipment placed side by side.

[0045] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A double-fed air-cooled power generation converter, comprising a wind power converter cabinet body (23), characterized in that: A first partition (1) is arranged at the top of one side of the interior of the wind power converter cabinet body (23), and a second partition (2) is arranged at the bottom of the interior of the wind power converter cabinet body (23) close to the second partition (2), a third partition (3) is arranged at the top of the interior of the wind power converter cabinet body (23) away from the first partition (1), and a fourth partition (4) is arranged at the bottom of the interior of the wind power converter cabinet body (23) close to the third partition (3), and a fifth partition (5) is arranged at a middle position of the interior of the wind power converter cabinet body (23); One side of the top of the wind power converter cabinet body (23) is connected to a discharge bin (15), and an adjustment mechanism for guiding airflow is provided on the discharge bin (15).

2. The double-fed air-cooled power generation converter according to claim 1, characterized in that: A circuit breaker (6) and a contactor (7) are arranged inside the first partition (1), a control unit (8) is arranged inside the second partition (2), nine groups of power unit modules (9) are arranged inside the third partition (3), a stainless steel resistor (10), a machine-side reactor (11), a chopper module (12) and a cooling fan (14) are arranged inside the fourth partition (4), and a grid-side reactor (13) is arranged inside the fifth partition (5).

3. The double-fed air-cooled power generation converter according to claim 1, characterized in that: The regulating mechanism comprises an airflow guide bin (16), the airflow guide bin (16) being installed on a side of the discharge bin (15) away from the wind power converter cabinet body (23), the airflow guide bin (16) being communicated with the discharge bin (15), a mounting bin (17) being installed on the top of the airflow guide bin (16), a blocking fin assembly (18) being evenly arranged at the bottom of the airflow guide bin (16), and the blocking fin assembly (18) penetrating the airflow guide bin (16) and extending to the inside of the mounting bin (17), and a worm gear (19) being installed on the top of the blocking fin assembly (18).

4. The double-fed air-cooled power generation converter according to claim 3, characterized in that: The central axis of the blocking fin assembly (18) is perpendicular to the horizontal central axis of the airflow guide chamber (16), and the blocking fin assembly (18) is rotatably connected to the airflow guide chamber (16) and the installation chamber (17) respectively.

5. The double-fed air-cooled power generation converter according to claim 3, characterized in that: The adjustment mechanism further comprises a servo motor (20), wherein the servo motor (20) is mounted at one end of the installation bin (17), an output end of the servo motor (20) is connected to a rotating shaft (21), and the rotating shaft (21) extends into the interior of the installation bin (17), and a worm (22) is evenly mounted on the outer side of the rotating shaft (21).

6. The doubly-fed air-cooled power generation converter according to claim 5, characterized in that: The central axis of the rotating shaft (21) coincides with the central axis of the worm (22), and the rotating shaft (21) is rotationally connected to the mounting bin (17).

7. The double-fed air-cooled power generation converter according to claim 5, characterized in that: The number of the worm gears (22) is the same as the number of the blocking fin assemblies (18), and the worm gears (22) are meshingly connected with the corresponding blocking fin assemblies (18).

Images