Wind turbine generator variable pitch capacitor mounting device

Abstract

The utility model relates to a variable-pitch capacitor mounting device of a wind turbine generator. According to the technical scheme, an installation frame comprises a fixed frame body and a movable frame body, holes are formed in the upper end and the lower end of a groove in the front side of the fixed frame body respectively and movably inserted into rotating shafts on the upper side and the lower side of the edge of the left end of the movable frame body, and notches are symmetrically formed in the upper portion and the lower portion of the opposite side walls of the front groove and the rear groove of the fixed frame body respectively; t-shaped reinforcing blocks are fixedly arranged at the four corners of a groove in the movable frame respectively, a clamping mechanism is installed in the center of the fixed frame, and the T-shaped reinforcing blocks at the four concave corners of the rear side of the movable frame are fixedly inserted through the clamping mechanism, so that rapid fixing and separation between the movable frame and the fixed frame are completed. L-shaped capacitor fixing plates are arranged on the left side and the right side of the front side wall of the movable frame at equal intervals from top to bottom. The utility model has the beneficial effects that the pull pin is convenient to pull, and the movable frame is separated from the fixed frame through the clamping mechanism, so that the movable frame is screwed out of the variable pitch cabinet, and the convenience of maintenance is improved.

Description

Technical Field

[0001] This utility model belongs to the field of pitch capacitor fixing devices, and relates to a pitch capacitor installation device for wind turbines. Background Technology

[0002] The pitch control cabinet is one of the core components of a wind turbine generator set, and the pitch capacitor module is also a core component within the pitch control cabinet. The energy stored in the capacitor module is primarily used for emergency feathering of the turbine blades. Therefore, the installation method of the pitch capacitor module within the pitch control cabinet is particularly important. Typical pitch capacitors are flat-packaged modules. During installation, they are usually mounted on the side wall of the pitch control cabinet through mounting holes on the capacitor casing. Due to the limited space inside the pitch control cabinet, maintenance personnel need to enter the cabinet to unscrew and remove the bolts on the capacitor module during maintenance. Furthermore, the pitch control cabinet contains high-voltage electricity, making the replacement and maintenance of the capacitor module extremely inconvenient and dangerous.

[0003] Therefore, this utility model provides a wind turbine pitch capacitor installation device to solve the above problems. Utility Model Content

[0004] In view of the problems existing in the prior art, this utility model discloses a wind turbine pitch capacitor installation device. The technical solution adopted includes an installation frame, which includes a fixed frame and a movable frame. The upper and lower ends of the groove on the front side of the fixed frame are respectively opened and movably inserted into the upper and lower rotating shafts on the left edge of the movable frame. The upper and lower sides of the opposite side walls of the grooves on the front and rear sides of the fixed frame are symmetrically opened with slots. T-shaped reinforcing blocks are fixedly installed at the four corners of the groove inside the movable frame. A clamping mechanism is installed in the center of the fixed frame. The clamping mechanism includes vertical rods fixedly connected to the upper and lower side walls of the inner frame of the fixed frame. A vertical sliding groove is opened in the middle of the vertical rod. Sliding columns are slidably inserted into the upper and lower sides of the sliding groove. One end of each column protruding from the slot is fixed to the center of the horizontal axis of the U-shaped pin. The two ends of the horizontal axis of the upper and lower U-shaped pins pass through the corresponding slots at the front and rear. The upper and lower sliding columns are movably fitted with connecting rods at one end of the U-shaped pins. The front ends of the upper and lower connecting rods are hinged together by rivets. The rear end of the rivet is fixedly inserted into the rear end of the pull pin. A spring is fitted on the pull pin. The pin at the front end of the spring passes through the front side frame of the fixed frame. The ends of the upper and lower U-shaped pins are movably inserted into the fixing ears. The fixing ears are fixedly installed at the four corners of the fixed frame. The T-shaped reinforcing block of the fixed frame has a hole at the end of the U-shaped pin. L-shaped capacitor fixing plates are installed at equal intervals from top to bottom on the left and right sides of the front side wall of the movable frame.

[0005] As a preferred embodiment of this utility model, mounting holes are symmetrically opened on the front and rear sides of the grooves on the upper and lower sides of the fixed frame; by opening mounting holes, it is convenient to fix the device to the inner wall of the pitch control cabinet with bolts.

[0006] As a preferred embodiment of this utility model, the four sides of the movable frame are rotated and fastened into the four corresponding grooves of the fixed frame around the upper and lower pivots of its left end. The upper and lower pivots of the left side of the movable frame are coaxial with the upper and lower insertion holes, respectively. This design facilitates the rotation of the movable component that houses the pitch capacitor module out of the pitch cabinet when disassembling and replacing the pitch capacitor, eliminating the need for manual entry into the narrow space of the pitch cabinet for disassembly and improving the convenience of pitch capacitor maintenance.

[0007] As a preferred embodiment of this utility model, the left outer wall of the movable frame is removed; this design facilitates that the movable frame does not interfere with the clamping mechanism installed in the fixed frame when it rotates around the fixed frame.

[0008] As a preferred embodiment of this utility model, a clearance notch is provided on the left front sidewall of the movable frame corresponding to the pull pin, and a rectangular notch is provided on the inner sidewall of the left frame of the movable frame opposite the bending point of the upper and lower U-shaped pins.

[0009] As a preferred embodiment of this utility model, several mounting slots are evenly opened on the lower side wall of the L-shaped capacitor fixing plate; by opening the mounting slots, it is convenient to adapt and install the mounting holes on the flat-packaged pitch capacitors of different specifications within a certain range.

[0010] The beneficial effects of this utility model are as follows: By designing a fixed frame and a movable frame hinged to one side of the fixed frame, during maintenance, the flat-encapsulated pitch capacitor installed on the movable frame can be quickly rotated out of the pitch cabinet, eliminating the need for manual operation inside the narrow pitch cabinet and improving the convenience of maintenance. At the same time, when the pitch capacitor installed on the movable frame is rotated and locked into the fixed frame, the designed locking mechanism can quickly insert and fix the four corners of the movable frame, improving the convenience of installation and fixing. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the installation frame of this utility model;

[0013] Figure 3 This is a schematic diagram of the rear side of the mounting frame of this utility model;

[0014] Figure 4This is a schematic diagram of the card mounting mechanism of this utility model.

[0015] In the diagram: 1-Mounting frame, 2-Mounting mechanism, 3-L-shaped capacitor fixing plate, 11-Fixed frame, 111-Slot, 112-Mounting hole, 12-Movable frame, 121-T-shaped reinforcing block, 122-Insertion hole, 123-Leaving notch, 124-Rectangular notch, 21-Vertical rod, 211-Slide groove, 22-Sliding column, 23-U-shaped pin, 24-Connecting rod, 25-Pull pin, 26-Spring, 27-Fixing ear, 31-Mounting slot. Detailed Implementation

[0016] Example 1

[0017] like Figures 1 to 4As shown, the wind turbine pitch capacitor mounting device of this utility model adopts the following technical solution: It includes a mounting frame 1, which comprises a fixed frame 11 and a movable frame 12. The upper and lower ends of the groove on the front side of the fixed frame 11 are respectively opened and movably inserted into the upper and lower rotating shafts on the left edge of the movable frame 12. The four sides of the movable frame 12 are rotatably fastened into the four corresponding grooves of the fixed frame 11 around the upper and lower rotating shafts on its left end. The upper and lower rotating shafts of the left side of the movable frame 12 are coaxial with the upper and lower insertion holes 122. The grooves at the front and rear of the fixed frame 11 are aligned... The upper and lower sides of one side wall of the fixed frame 11 are symmetrically provided with slots 111. The front and rear sides of the grooves on both sides of the fixed frame 11 are symmetrically provided with mounting holes 112. T-shaped reinforcing blocks 121 are fixedly installed at the four corners of the groove inside the movable frame 12. The left outer wall of the movable frame 12 is removed. A clearance notch 123 is provided on the left front side wall of the movable frame 12 corresponding to the pull pin 25. A rectangular notch 124 is provided on the inner side wall of the left frame of the movable frame 12, directly opposite the bend of the upper and lower U-shaped pins 23. A clamping mechanism 2 is installed at the center of the fixed frame 11. The clamping mechanism 2 includes... The frame includes vertical rods 21 fixedly connected to the upper and lower side walls of the inner frame of the fixed frame 11. A vertical groove 211 is formed in the middle of each vertical rod 21. Sliding posts 22 are slidably inserted into the upper and lower sides of the groove 211. The ends of the upper and lower sliding posts 22 protruding from the groove are fixed to the center of the horizontal axis of a U-shaped pin 23. The two ends of the horizontal axis of the upper and lower U-shaped pins 23 pass through corresponding grooves 111. Connecting rods 24 are movably mounted on the ends of the upper and lower sliding posts 22 passing through the U-shaped pins 23. The front ends of the upper and lower connecting rods 24 are hinged together by rivets, and the rear ends of the rivets are fixedly inserted into pull pins. At the rear end of 25, a spring 26 is fitted onto the pull pin 25. The pin at the front end of the spring 26 passes through the front side frame of the fixed frame 11. The ends of the upper and lower U-shaped pins 23 are respectively movably inserted into the fixing ears 27. The fixing ears 27 are respectively fixedly installed at the four corners of the fixed frame 11. The fixed frame 11 has a hole 122 on the T-shaped reinforcing block 121 opposite the end of the U-shaped pin 23. L-shaped capacitor fixing plates 3 are installed on the left and right sides of the front side wall of the movable frame 12 at equal intervals from top to bottom. Several mounting slots 31 are evenly opened on the lower side wall of the L-shaped capacitor fixing plate 3.

[0018] The working principle of this utility model is as follows: In use, the device is fixed to the inner wall of the pitch control unit by screws and mounting holes 112 on the fixed frame 11. Then, the end of the pull pin 25 is pulled outward, which drives the upper and lower connecting rods 24 hinged to it to move forward. The rear end of the upper and lower connecting rods 24 drives the upper and lower U-shaped pins 23 to move towards the middle through the sliding column 22, thereby pulling the ends of the upper and lower U-shaped pins 23 out of the insertion holes 122 of the T-shaped reinforcing blocks 121 at the four corners of the rear groove of the corresponding movable frame 12. The rear side frame of the movable frame 12 is pulled outward. The movable frame 12 rotates around the front edge of the fixed frame 11 through the rotating shafts at the upper and lower ends until the movable frame 12 and the fixed frame 11 are at a 90-degree angle. The pull pin 25 is released, and under the action of the spring 26, the upper... The end of the U-shaped pin 23 is inserted into the insertion hole 122 of the T-shaped reinforcing block 121 at the upper and lower corners of the groove at the left rear end of the corresponding movable frame 12, thereby fixing the movable frame 12 to the fixed frame 11. The flat-packaged pitch capacitor is placed on the L-shaped capacitor fixing plate 3 of each layer and fixed by screws through the mounting slot 31. Then, pull the pull pin 25 again to release the movable frame 12. Rotate the movable frame 12 to the rear side to make the movable frame 12 snap back into the fixed frame 11 until the ends of the upper and lower U-shaped pins 23 are respectively inserted into the insertion hole 122 of the T-shaped reinforcing block 121 at the four corners of the groove at the rear end of the corresponding movable frame 12. The fixing is then completed. When inspecting the capacitor later, the pull pin 25 can be pulled to unscrew the entire capacitor module out of the pitch cabinet for quick replacement.

[0019] Electrical connection methods or structures not described in detail in this article are existing technologies.

[0020] While the specific embodiments of this utility model have been described in detail above, this utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model. Modifications or variations that do not involve creative labor are still within the protection scope of this utility model.

Claims

1. A wind turbine pitch capacitor installation device, characterized in that: The system includes an installation frame (1), which comprises a fixed frame (11) and a movable frame (12). The upper and lower ends of the groove on the front side of the fixed frame (11) are respectively opened and movably inserted into the upper and lower rotating shafts on the left edge of the movable frame (12). The upper and lower sides of the opposite side wall of the groove on the front and rear sides of the fixed frame (11) are respectively symmetrically opened with slots (111). T-shaped reinforcing blocks (121) are respectively fixedly installed at the four corners of the groove inside the movable frame (12). A clamping mechanism (2) is installed in the center of the fixed frame (11). The clamping mechanism (2) includes vertical rods (21) that are fixedly connected to the upper and lower side walls of the inner frame of the fixed frame (11). A vertical groove (211) is opened in the middle of the vertical rod (21). Sliding columns (22) are slidably inserted into the upper and lower sides of the groove (211). The upper and lower ends of the sliding columns (22) that protrude from the groove are respectively fixed to the center of the horizontal axis through the U-shaped pin (23). The two ends of the horizontal axis in the middle of the upper and lower U-shaped pins (23) pass through the corresponding slots (111) at the front and rear, respectively. The upper and lower sliding pins (22) pass through one end of the U-shaped pins (23) and are respectively movably fitted with connecting rods (24). The front ends of the upper and lower connecting rods (24) are hinged together by rivets. The rear end of the rivet is fixedly inserted into the rear end of the pull pin (25). A spring (26) is fitted on the pull pin (25). The pin at the front end of the spring (26) passes through the fixed pin in sequence. The ends of the upper and lower U-shaped pins (23) on the front side frame (11) are respectively movably inserted into the fixing ears (27). The fixing ears (27) are respectively fixedly installed at the four corners of the fixed frame (11). The T-shaped reinforcing block (121) of the fixed frame (11) has a hole (122) at the part opposite to the end of the U-shaped pin (23). L-shaped capacitor fixing plates (3) are installed on the left and right sides of the front side wall of the movable frame (12) at equal intervals from top to bottom.

2. The wind turbine pitch capacitor installation device according to claim 1, characterized in that: Mounting holes (112) are symmetrically opened on the front and back sides of the grooves on the upper and lower sides of the fixed frame (11).

3. The wind turbine pitch capacitor installation device according to claim 1, characterized in that: The four sides of the movable frame (12) are rotated and fastened to the four corresponding grooves of the fixed frame (11) around the upper and lower pivots of its left end. The upper and lower pivots of the left side of the movable frame (12) are coaxial with the upper and lower insertion holes (122).

4. The wind turbine pitch capacitor installation device according to claim 1, characterized in that: The left outer wall of the active frame (12) was removed.

5. The wind turbine pitch capacitor installation device according to claim 1, characterized in that: A clearance notch (123) is provided on the left front side wall of the movable frame (12) corresponding to the pull pin (25), and a rectangular notch (124) is provided on the inner side wall of the left frame of the movable frame (12) directly opposite the bend of the upper and lower U-shaped pins (23).

6. The wind turbine pitch capacitor installation device according to claim 1, characterized in that: The lower side wall of the L-shaped capacitor fixing plate (3) has several mounting slots (31) evenly distributed.

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