A high-voltage variable-frequency bypass cabinet device cabinet reinforcing structure

Abstract

The utility model relates to reinforcing structure technical field, especially a high -voltage frequency conversion bypass cabinet device cabinet reinforcing structure, including the cabinet, the bottom surface fixed connection of cabinet has a plurality of symmetrical settings support leg, the left and right sides of cabinet all fixed connection has a plurality of linear array's U type frame, the inside slide connection of U type frame has reinforcing plate. The utility model's advantage lies in: the base frame is through the spacing frame and is sleeved on the support leg, makes the base frame and the cabinet bottom surface fit, then inserts the reinforcing plate into the connecting groove of U type frame and base frame, then places the top frame on the cabinet top, makes the clamping plate insert the clamping groove of cabinet top surface, finally twists the locking bolt, makes its nut department and base frame bottom surface fit, fixes the reinforcing plate, simultaneously through the T type guide slot of baffle and the T type guide plate of cabinet sliding fit, completes overall reinforcement. The whole process does not need welding operation, avoids the complex positioning, welding and polishing procedure, and greatly shortens the installation time.

Description

Technical Field

[0001] This utility model relates to the field of reinforcement structure technology, and in particular to a reinforcement structure for a high-voltage frequency converter bypass cabinet. Background Technology

[0002] High-voltage frequency converter bypass cabinets are key supporting devices in power systems used to ensure the safe and stable operation of high-voltage frequency converter equipment. They are defined as: cabinet structures integrating bypass switching, electrical isolation, and protection control functions. Through internal circuit design and the coordinated operation of mechanical components, they achieve flexible switching and fault protection for high-voltage frequency converters. This device typically consists of core components such as a cabinet frame, vacuum circuit breaker, disconnecting switch, current transformer, voltage transformer, and control circuit module. During normal operation, the high-voltage frequency converter bypass cabinet allows the high-voltage frequency converter to connect to the main circuit, enabling variable frequency speed control of the motor. When the frequency converter malfunctions or requires maintenance, the bypass switching function quickly switches the motor to mains frequency operation, preventing production interruptions due to equipment downtime.

[0003] Currently, to improve the structural strength of high-voltage frequency converter bypass cabinets and meet the requirements for seismic resistance and deformation resistance during long-term operation, most cabinets are reinforced by welding angle steel internally. This reinforcement method involves welding angle steel to the four corners of the cabinet's inner wall and key load-bearing areas to form a frame support structure, thereby enhancing the overall rigidity of the cabinet. While welding angle steel can effectively improve the cabinet's load-bearing capacity and stability, resisting vibration and impact during transportation and electromagnetic forces generated by electrical components during operation, it has significant drawbacks in practical applications. The welding process requires professional personnel to operate welding equipment, necessitating not only pre-treatment of the cabinet's internal space but also consuming considerable time for positioning, welding, and grinding, leading to extended production cycles and increased labor and time costs. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to propose a cabinet reinforcement structure for a high-voltage frequency converter bypass cabinet, so as to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0006] To achieve the above objectives, one embodiment of this utility model provides a cabinet reinforcement structure for a high-voltage frequency converter bypass cabinet, including a cabinet. A plurality of symmetrically arranged support legs are fixedly connected to the bottom surface of the cabinet. A plurality of linearly arrayed U-shaped frames are fixedly connected to both the left and right sides of the cabinet. Reinforcing plates are slidably connected inside the U-shaped frames. A top frame is fixedly connected to the top of each of the reinforcing plates. The bottom surface of the top frame is in contact with the top surface of the cabinet. A plurality of symmetrically arranged clamping plates are fixedly connected to the bottom surface of the top frame. These clamping plates are inserted into the top of the cabinet. A bottom frame is slidably connected to the bottom ends of the reinforcing plates. Two symmetrically arranged baffles are fixedly connected to the top surface of the bottom frame. Both baffles are slidably connected to the cabinet. A locking bolt is threaded to the bottom end of each reinforcing plate. The nuts of the locking bolts are in contact with the bottom surface of the bottom frame.

[0007] Preferably, in any of the above solutions, the top of the bottom frame is provided with a number of symmetrically arranged connecting slots, and the bottom ends of the number of reinforcing plates are slidably connected to the bottom frame through the connecting slots.

[0008] Preferably, in any of the above solutions, the inner wall of the bottom frame is fixedly connected with a plurality of symmetrically arranged limiting frames, and the plurality of limiting frames are slidably connected to a plurality of supporting legs respectively.

[0009] Preferably, in any of the above solutions, two symmetrically arranged T-shaped guide grooves are provided on the inner side of the baffle, and two symmetrically arranged T-shaped guide plates are fixedly connected to both the left and right sides of the cabinet. The baffle is slidably connected to the T-shaped guide plates through the T-shaped guide grooves.

[0010] Preferably, in any of the above embodiments, the bottom end of the reinforcing plate is provided with a threaded hole, and the screw portion of the locking bolt is threadedly connected to the reinforcing plate through the threaded hole.

[0011] Preferably, in any of the above embodiments, several reinforcing plates are perpendicular to the top frame, the top frame is parallel to the bottom frame, and the top surface of the bottom frame is in contact with the bottom surface of the cabinet.

[0012] Preferably, as described in any of the above schemes, the top surface of the cabinet has several symmetrically arranged slots, and the several slots are slidably connected to the cabinet through the slots.

[0013] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0014] 1. Addressing the issues of cumbersome construction and high cost associated with traditional high-voltage frequency converter bypass cabinet reinforcement using angle steel welding, this reinforcement structure employs a detachable assembly method. During installation, the bottom frame is first fitted onto the support legs using the limiting frame, ensuring the bottom frame is flush with the bottom surface of the cabinet. Next, the reinforcing plate is inserted into the connecting groove between the U-shaped frame and the bottom frame. Then, the top frame is placed on top of the cabinet, allowing the retaining plate to insert into the retaining groove on the top surface of the cabinet. Finally, the locking bolts are tightened to ensure the nuts are flush with the bottom surface of the bottom frame, securing the reinforcing plate. Simultaneously, the T-shaped guide groove of the baffle slides into the T-shaped guide plate of the cabinet, completing the overall reinforcement. The entire process requires no welding, avoiding complex positioning, welding, and grinding procedures, significantly shortening installation time, reducing labor costs, and eliminating issues such as high temperatures and welding slag. This protects the internal electrical components of the cabinet and facilitates later disassembly, replacement, and maintenance of the reinforcement structure.

[0015] 2. This high-voltage frequency converter bypass cabinet reinforcement structure achieves a stable yet flexible reinforcement effect through the coordinated use of multiple components. During installation, the bottom frame is positioned with the support legs using a limiting frame according to the cabinet dimensions, ensuring its stability. After the reinforcing plate is inserted into the U-shaped frame and connecting groove, its tightness can be adjusted using locking bolts to adapt to different reinforcement requirements. The top frame's locking plate cooperates with the cabinet's locking groove to prevent top frame displacement. The baffle slides along the T-shaped guide plate, further enhancing the connection stability between the bottom frame and the cabinet. This design not only effectively disperses stress and improves the overall rigidity of the cabinet when subjected to external forces such as transportation vibration and electromagnetic forces, but also allows for rapid adaptation and adjustment of the reinforcement structure by adjusting the number and position of the reinforcing plates and replacing top and bottom frames of different sizes to meet diverse usage scenarios and enhance the versatility and practicality of the reinforcement structure. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the assembly of this utility model;

[0017] Figure 2 This is an exploded structural diagram of the assembly of this utility model;

[0018] Figure 3 This is a schematic diagram of the cabinet structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the top frame of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the bottom frame of this utility model.

[0021] In the diagram: 1-cabinet body, 2-support leg, 3-U-shaped frame, 4-reinforcing plate, 5-top frame, 6-card plate, 7-bottom frame, 8-baffle, 9-locking bolt, 10-connecting groove, 11-limiting frame, 12-T-shaped guide groove, 13-T-shaped guide plate, 14-threaded hole, 15-card slot. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited thereto.

[0023] like Figures 1 to 5 As shown, a high-voltage frequency converter bypass cabinet reinforcement structure includes a cabinet 1. Several symmetrically arranged support legs 2 are fixedly connected to the bottom surface of the cabinet 1. Several linearly arrayed U-shaped frames 3 are fixedly connected to both the left and right sides of the cabinet 1. Reinforcing plates 4 are slidably connected inside the U-shaped frames 3. Top frames 5 are fixedly connected to the top of the reinforcing plates 4. The bottom surface of the top frame 5 is in contact with the top surface of the cabinet 1. Several symmetrically arranged clamping plates 6 are fixedly connected to the bottom surface of the top frame 5. The clamping plates 6 are inserted into the top of the cabinet 1. A bottom frame 7 is slidably connected to the bottom ends of the reinforcing plates 4. Two symmetrically arranged baffles 8 are fixedly connected to the top surface of the bottom frame 7. Both baffles 8 are slidably connected to the cabinet 1. A locking bolt 9 is threadedly connected to the bottom end of each reinforcing plate 4. The nuts of the locking bolts 9 are in contact with the bottom surface of the bottom frame 7.

[0024] As an optional technical solution of this utility model, the top of the base frame 7 is provided with several symmetrically arranged connecting grooves 10. The bottom ends of several reinforcing plates 4 are slidably connected to the base frame 7 through the connecting grooves 10. When installing the reinforcement structure, the bottom ends of the reinforcing plates 4 can be directly inserted along the connecting grooves 10 to quickly achieve a preliminary connection with the base frame 7 without a complicated calibration process. The connecting grooves 10 provide lateral restraint for the reinforcing plates 4, ensuring that the reinforcing plates 4 maintain a stable arrangement on the base frame 7 and preventing them from shifting in the horizontal direction. This creates favorable conditions for the subsequent installation of components such as the top frame 5 and locking bolts 9, while also ensuring the structural regularity and uniform stress distribution of the entire reinforcement frame.

[0025] As an optional technical solution of this utility model, a plurality of symmetrically arranged limiting frames 11 are fixedly connected to the inner wall of the bottom frame 7. The limiting frames 11 are slidably connected to a plurality of supporting legs 2. When installing the bottom frame 7, simply align the limiting frames 11 with the supporting legs 2 and insert them to quickly complete the positioning of the bottom frame 7, so that the bottom frame 7 accurately fits the bottom surface of the cabinet 1. The limiting function of the limiting frames 11 on the supporting legs 2 not only prevents the bottom frame 7 from being misaligned during installation, but also effectively restricts the displacement of the bottom frame 7 when the cabinet is in motion, ensuring that the reinforced structure is tightly integrated with the cabinet, jointly resisting the influence of external vibration, electromagnetic force and other factors, and improving the overall structural stability of the cabinet.

[0026] As an optional technical solution of this utility model, two symmetrically arranged T-shaped guide grooves 12 are provided on the inner side of the baffle 8, and two symmetrically arranged T-shaped guide plates 13 are fixedly connected to both the left and right sides of the cabinet body 1. The baffle 8 is slidably connected to the T-shaped guide plates 13 through the T-shaped guide grooves 12. During installation, the baffle 8 can slide smoothly along the T-shaped guide plates 13 and quickly reach the predetermined position without repeated adjustments. When the reinforced structure is under stress, the T-shaped guide grooves 12 and T-shaped guide plates 13 are tightly engaged, which can effectively transmit the force from the reinforcing plate 4, top frame 5 and other components, prevent the baffle 8 from falling off or shifting, and thus improve the support effect of the entire reinforced frame on the cabinet body, so that the cabinet body can remain stable under complex working conditions.

[0027] As an optional technical solution of this utility model, the bottom end of the reinforcing plate 4 is provided with a threaded hole 14. The screw portion of the locking bolt 9 is threadedly connected to the reinforcing plate 4 through the threaded hole 14. After the reinforcing plate 4 is inserted into the connecting groove 10 of the base frame 7 and adjusted in position, the locking bolt 9 is screwed into the threaded hole 14. Through the tightening action of the thread, the reinforcing plate 4 can be firmly fixed to the base frame 7. This connection method not only makes it easy for construction personnel to adjust the tightness of the reinforcing plate 4 according to actual needs, ensuring the stability of the reinforced structure, but also allows for quick loosening of the locking bolt 9 during later maintenance or adjustment of the reinforced structure, enabling the disassembly and replacement of the reinforcing plate 4. The operation is simple and convenient, improving the maintainability of the reinforced structure.

[0028] As an optional technical solution of this utility model, several reinforcing plates 4 are perpendicular to the top frame 5, the top frame 5 is parallel to the bottom frame 7, and the top surface of the bottom frame 7 is in contact with the bottom surface of the cabinet 1. The vertical arrangement of the reinforcing plates 4 can effectively transfer the external force on the cabinet to the top frame 5 and the bottom frame 7, thus dispersing the force. The parallel arrangement of the top frame 5 and the bottom frame 7 ensures the uniformity of the stress on the reinforced frame and avoids local stress concentration. The bottom frame 7 is in contact with the bottom surface of the cabinet 1, which increases the contact area between the reinforced structure and the cabinet, making the two tightly bonded. Under conditions such as transportation vibration and electromagnetic forces generated by equipment operation, the reinforced structure can work together with the cabinet to resist external forces, significantly improving the structural strength and deformation resistance of the cabinet.

[0029] As an optional technical solution of this utility model, the top surface of the cabinet 1 is provided with several symmetrically arranged slots 15, and several locking plates 6 are slidably connected to the cabinet 1 through the slots 15. When installing the top frame 5, simply align the locking plates 6 with the slots 15 and insert them to quickly complete the positioning and initial fixation of the top frame 5, which is simple and efficient. During the operation of the cabinet, the locking plates 6 and the slots 15 are tightly engaged, which can effectively limit the displacement of the top frame 5 in the horizontal and vertical directions, prevent the top frame 5 from loosening or falling off, and ensure the integrity of the reinforcement structure. At the same time, this locking method also facilitates the disassembly of the top frame 5. When it is necessary to inspect the equipment on the top of the cabinet or adjust the reinforcement structure, the top frame 5 can be easily removed without affecting the operation of other components inside the cabinet.

[0030] A high-voltage frequency converter bypass cabinet reinforcement structure, the working principle of which is as follows:

[0031] 1): During installation, first, fit the bottom frame 7 onto the support leg 2 through the limiting frame 11 so that the bottom frame 7 fits against the bottom surface of the cabinet 1; then insert the reinforcing plate 4 into the connecting groove 10 between the U-shaped frame 3 and the bottom frame 7.

[0032] 2): Place the top frame 5 on top of the cabinet 1, so that the card plate 6 is inserted into the card slot 15 on the top surface of the cabinet 1.

[0033] 3): Tighten the locking bolt 9 so that its nut is in contact with the bottom surface of the bottom frame 7 to fix the reinforcing plate 4. At the same time, the T-shaped guide groove 12 of the baffle 8 slides and engages with the T-shaped guide plate 13 of the cabinet 1 to complete the overall reinforcement.

[0034] In summary, the current method of reinforcing the high-voltage frequency converter bypass cabinet using angle steel welding presents challenges due to its cumbersome construction and high cost. This reinforcement structure employs a detachable assembly method. During installation, the bottom frame 7 is first fitted onto the support leg 2 via the limiting frame 11, ensuring that the bottom frame 7 is flush with the bottom surface of the cabinet 1. Next, the reinforcing plate 4 is inserted into the connecting groove 10 between the U-shaped frame 3 and the bottom frame 7. Then, the top frame 5 is placed on top of the cabinet 1, allowing the retaining plate 6 to be inserted into the retaining groove 15 on the top surface of the cabinet 1. Finally, the locking bolt 9 is tightened to ensure that its nut is flush with the bottom surface of the bottom frame 7, thus fixing the reinforcing plate 4. Simultaneously, the T-shaped guide groove 12 of the baffle plate 8 slides into the T-shaped guide plate 13 of the cabinet 1, completing the overall reinforcement. The entire process requires no welding, avoiding complex positioning, welding, and grinding procedures, significantly shortening installation time, reducing labor costs, and eliminating problems such as high temperatures and welding slag. It also protects the internal electrical components of the cabinet and facilitates later disassembly, replacement, and maintenance of the reinforcement structure. Through the coordinated operation of multiple components, a stable and flexible reinforcement effect is achieved. During installation, the bottom frame 7 is positioned with the support leg 2 via the limiting frame 11 according to the dimensions of the cabinet 1, ensuring the stability of the bottom frame 7. After the reinforcing plate 4 is inserted into the U-shaped frame 3 and the connecting groove 10, its tightness can be adjusted using the locking bolt 9 to adapt to different reinforcement requirements. The clamping plate 6 of the top frame 5 cooperates with the clamping groove 15 of the cabinet 1 to prevent the top frame 5 from shifting. The baffle 8 slides along the T-shaped guide plate 13, further enhancing the connection stability between the bottom frame 7 and the cabinet 1. This design not only effectively disperses stress and improves the overall rigidity of the cabinet when it is subjected to external forces such as transportation vibration and electromagnetic force through the frame structure formed by the reinforcing plate 4, top frame 5 and bottom frame 7, but also allows for quick adaptation and adjustment of the reinforcement structure when facing different specifications of cabinets or subsequent cabinet modification needs. This can be achieved by adjusting the number and position of the reinforcing plate 4, as well as replacing the top frame 5 and bottom frame 7 with different sizes, thus meeting diverse usage scenarios and enhancing the versatility and practicality of the reinforcement structure.

Claims

1. A reinforcement structure for a high-voltage frequency converter bypass cabinet, characterized in that: The cabinet includes a cabinet body (1), the bottom surface of which is fixedly connected to several symmetrically arranged support legs (2). Several linearly arranged U-shaped frames (3) are fixedly connected to both the left and right sides of the cabinet body (1). Reinforcing plates (4) are slidably connected inside the U-shaped frames (3). A top frame (5) is fixedly connected to the top of several reinforcing plates (4). The bottom surface of the top frame (5) is flush with the top surface of the cabinet body (1). Several symmetrically arranged support legs (2) are fixedly connected to the bottom surface of the top frame (5). The card plate (6) is inserted into the top of the cabinet (1). The bottom end of the reinforcing plate (4) is slidably connected to the bottom frame (7). The top surface of the bottom frame (7) is fixedly connected to two symmetrically arranged baffles (8). The two baffles (8) are slidably connected to the cabinet (1). The bottom end of each reinforcing plate (4) is threaded with a locking bolt (9). The nuts of the locking bolts (9) are all in contact with the bottom surface of the bottom frame (7).

2. The high-voltage frequency converter bypass cabinet reinforcement structure according to claim 1, characterized in that: The top of the bottom frame (7) is provided with several symmetrically arranged connecting grooves (10), and the bottom ends of several reinforcing plates (4) are slidably connected to the bottom frame (7) through the connecting grooves (10).

3. The cabinet reinforcement structure of a high-voltage frequency converter bypass cabinet according to claim 2, characterized in that: The inner wall of the bottom frame (7) is fixedly connected with several symmetrically arranged limiting frames (11), and the several limiting frames (11) are slidably connected to several supporting legs (2).

4. The high-voltage frequency converter bypass cabinet reinforcement structure according to claim 3, characterized in that: The inner side of the baffle (8) has two symmetrically arranged T-shaped guide grooves (12), and the left and right sides of the cabinet (1) are fixedly connected to two symmetrically arranged T-shaped guide plates (13). The baffle (8) is slidably connected to the T-shaped guide plates (13) through the T-shaped guide grooves (12).

5. The high-voltage frequency converter bypass cabinet reinforcement structure according to claim 4, characterized in that: The bottom end of the reinforcing plate (4) is provided with a threaded hole (14), and the screw part of the locking bolt (9) is threadedly connected to the reinforcing plate (4) through the threaded hole (14).

6. The high-voltage frequency converter bypass cabinet reinforcement structure according to claim 5, characterized in that: Several of the reinforcing plates (4) are perpendicular to the top frame (5), the top frame (5) is parallel to the bottom frame (7), and the top surface of the bottom frame (7) is in contact with the bottom surface of the cabinet (1).

7. The cabinet reinforcement structure for a high-voltage frequency converter bypass device according to claim 6, characterized in that: The top surface of the cabinet (1) is provided with several symmetrically arranged slots (15), and several of the card plates (6) are slidably connected to the cabinet (1) through the slots (15).

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