Centrally installed switchgear for substation transformer

Abstract

The utility model relates to the technical field of centrally installed cabinets, in particular to a centrally installed cabinet for a transformer of a substation, which comprises a cabinet body, the cabinet body comprises a centrally installed cabinet body, the inner side of the centrally installed cabinet body is fixedly connected with a ventilation opening, and the inner side of the ventilation opening is movably connected with a dustproof plate. According to the dustproof plate, the movable rod moves in the fixed rod and is matched with the elastic property of the spring, so that the connecting block can drive the inserting block to move along with the movable rod, and the inserting block and the inserting groove are inserted and separated, and therefore the connecting plate can be conveniently fixed and unfixed, and when dust and the like are attached to and accumulated on the surface of the dustproof plate in the using process, the dustproof plate is not prone to falling off. Through the cooperation of the insertion blocks and the insertion grooves, the dustproof plate and the ventilation openings can be conveniently installed and detached, the dustproof plate can be conveniently cleaned or replaced, the dustproof effect of the dustproof plate can be guaranteed, air circulation can be ensured, ventilation of the centrally installed switchgear body and heat dissipation of a transformer can be guaranteed, and power can be better supplied to a substation.

Description

Technical Field

[0001] This utility model relates to the field of intermediate power switch technology, specifically to an intermediate power switch for substation transformers. Background Technology

[0002] A substation is a location in a power system where voltage and current are transformed, concentrated, and distributed. Its primary function is to change voltage. Simultaneously, to ensure power quality and equipment safety, substations also need to perform voltage regulation, power flow control, and protection of transmission and distribution lines and major electrical equipment. A transformer is a static electrical device that uses the principle of electromagnetic induction to convert alternating current (AC) energy of one voltage level to another. The main function of a transformer is to regulate voltage, transforming high voltage into low voltage or vice versa, to meet the needs of different electrical appliances. To facilitate the management and protection of transformers in substations, intermediate-voltage switchgear is typically used to install them. A medium-voltage switchgear is an electrical device used in high-voltage power systems, primarily for the operation and protection of high-voltage switches. Through physical and electrical isolation, the medium-voltage switchgear isolates the transformer from operators and other electrical equipment, reducing the risk of electric shock. Simultaneously, it provides a sealed environment, protecting the transformer from external environmental influences (such as dust, humidity, and temperature changes), thus extending its service life. In short, using medium-voltage switchgear to manage and protect transformers in substations not only improves system safety and reliability but also simplifies maintenance and management.

[0003] In existing technologies, when installing transformers using intermediate frequency switchgear, ventilation openings are typically created inside the switchgear to allow air circulation and to facilitate heat dissipation. Dust filters are used to trap dust and prevent it from entering the switchgear. However, after prolonged use, dust accumulates on the surface of the dust filters. Because the dust filters are not regularly cleaned or replaced, this accumulation hinders air circulation and reduces heat dissipation, ultimately compromising the stable operation of the transformer and compromising the safety and stability of the substation's power supply. Therefore, to address these issues, an intermediate frequency switchgear for substation transformers is proposed. Summary of the Invention

[0004] The purpose of this utility model is to provide a central switchgear for substation transformers to solve the problem mentioned in the background art that the dust screen cannot be cleaned or replaced properly, and the accumulation of dust and other substances will affect the air circulation, thereby affecting the heat dissipation effect, which will not be able to ensure the stable operation of the transformer and is not conducive to ensuring the safety and stability of the power supply of the substation.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a central switch cabinet for a substation transformer, comprising a cabinet body, the cabinet body including a central switch cabinet body, a ventilation opening fixedly connected to the inner side of the central switch cabinet body, and a dustproof plate movably connected to the inner side of the ventilation opening;

[0006] Its features are,

[0007] S1. Remove the original two transformers;

[0008] S2. Power supplies of corresponding capacity V are drawn from the outgoing lines of the two substations and connected to the main substation to supply power to the main substation. The two power supplies serve as backups for each other. The main substation is equipped with a dual power supply cabinet, and the branch substations are equipped with interconnection switches.

[0009] Preferably, the surface of the vent is provided with a dustproof mechanism, the dustproof mechanism including a connecting plate, the connecting plate being fixedly connected to the surface of the dustproof plate, a fixing rod being fixedly connected to the surface of the vent, a spring being fixedly connected to the inner wall of the fixing rod, a movable rod being fixedly connected to the surface of the spring, a connecting block being fixedly connected to the surface of the movable rod, an insert being fixedly connected to the surface of the connecting block, and a slot being provided on the inner side of the connecting plate.

[0010] Preferably, the fixing rods are fixedly connected to the surface of the vent in two sets, one end of the spring is fixedly connected to the fixing rod, and the other end of the spring is fixedly connected to the movable rod.

[0011] Preferably, the movable rod is movable inside the fixed rod, the connecting block is fixedly connected to the end of the movable rod away from the spring, and the slots are provided in two sets inside the connecting plate.

[0012] Preferably, a positioning mechanism is provided on the inner side of the central cabinet body. The positioning mechanism includes a movable groove, which is opened on the inner side of the central cabinet body. A rotating rod is movably connected to the inner side of the movable groove. A first conical tooth is fixedly connected to the surface of the rotating rod. A positive and negative screw is movably connected to the inner side of the movable groove. A second conical tooth is fixedly connected to the surface of the positive and negative screw. A moving block is threadedly connected to the surface of the positive and negative screw. A limit plate is fixedly connected to the upper surface of the moving block. A limit rod is fixedly connected to the inner wall of the movable groove.

[0013] Preferably, the movable slot and the central cabinet body are movably connected, and the movable block is in two sets movably connected by threads and positive and negative screws.

[0014] Preferably, the movable block is movable inside the movable groove, and the limiting rod is fixedly connected in two sets to the inner surface of the movable groove, and the movable block and the limiting rod are movably connected.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] By moving the movable rod within the fixed rod, and in conjunction with the elasticity of the spring, the connecting block can drive the insert block to move accordingly, enabling the insertion and separation of the insert block and the slot. This facilitates the fixing and unfixing of the connecting plate. When dust adheres to and accumulates on the surface of the dustproof plate during use, the cooperation of the insert block and the slot facilitates the installation and disassembly of the dustproof plate and the vent, making it easy to clean or replace the dustproof plate. This ensures the dustproof effect of the dustproof plate and ensures air circulation, thereby ensuring ventilation of the central switch cabinet and heat dissipation of the transformer, facilitating better power supply to the substation.

[0017] By rotating the rotating rod, the first conical tooth can rotate accordingly, and then the second conical tooth can rotate under the action of the first conical tooth, driving the forward and reverse screws to rotate. This allows the moving block to drive the limiting plate to move. Through the movement of the limiting plate, the two sides of the transformer can be limited, achieving the effect of positioning the transformer. This allows the transformer to be initially fixed in the central switch cabinet, making it easier for staff to carry out subsequent installation of the transformer more stably. Attached Figure Description

[0018] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0019] Figure 2 This is an exploded side view of the structure of this utility model;

[0020] Figure 3 This is a side-view exploded view of the structure of the ventilation opening and dustproof plate of this utility model;

[0021] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A;

[0022] Figure 5 This is an exploded cross-sectional view of the structure of the positive and negative screws and the limiting plate of this utility model.

[0023] Figure 6 This is a schematic diagram of the main substation circuit of this utility model;

[0024] Figure 7 This is the circuit flowchart of the main substation of this utility model.

[0025] In the diagram: 1. Central cabinet body; 11. Ventilation opening; 12. Dustproof plate; 2. Connecting plate; 21. Fixing rod; 22. Spring; 23. Movable rod; 24. Connecting block; 25. Insert block; 26. Slot; 3. Movable groove; 31. Rotating rod; 32. First conical tooth; 33. Positive and negative screws; 34. Second conical tooth; 35. Moving block; 36. Limiting plate; 37. Limiting rod. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-7 One embodiment provided by this utility model:

[0028] A switchboard for a transformer in a substation includes a cabinet, the cabinet including a switchboard body 1, a ventilation opening 11 fixedly connected to the inner side of the switchboard body 1, and a dustproof plate 12 movably connected to the inner side of the ventilation opening 11.

[0029] Its features are,

[0030] S1. Remove the original two transformers;

[0031] S2. A dual power supply cabinet with corresponding capacity of 400V is led out from the substations of the two outgoing lines and connected to the main substation to supply the power used inside the main substation. The two power supplies are backups for each other. The main substation is equipped with a dual power supply cabinet, and the branch substations are equipped with a tie switch.

[0032] The surface of the vent 11 is provided with a dustproof mechanism, which includes a connecting plate 2. The connecting plate 2 is fixedly connected to the surface of the dustproof plate 12. A fixing rod 21 is fixedly connected to the surface of the vent 11. A spring 22 is fixedly connected to the inner wall of the fixing rod 21. A movable rod 23 is fixedly connected to the surface of the spring 22. A connecting block 24 is fixedly connected to the surface of the movable rod 23. An insert block 25 is fixedly connected to the surface of the connecting block 24. A slot 26 is opened on the inner side of the connecting plate 2. Through the cooperation of the insert block 25 and the slot 26, the connecting plate 2 can be fixed and unfixed, which facilitates the installation and disassembly of the dustproof plate 12 and the vent 11. When dust adheres and accumulates on the dustproof plate 12, it is easy to remove the dustproof plate 12 for cleaning or replacement. This ensures the effectiveness of the dustproof plate 12 and the air circulation, thereby ensuring the ventilation of the central switch cabinet body 1 and the heat dissipation of the transformer, thus ensuring the safety and stability of the power supply to the substation.

[0033] Furthermore, the fixing rods 21 are fixedly connected to the surface of the vent 11 in two sets. One end of the spring 22 is fixedly connected to the fixing rod 21, and the other end of the spring 22 is fixedly connected to the movable rod 23. By connecting the fixing rod 21 and the movable rod 23 through the spring 22, the movable rod 23 can be reset, which facilitates the connection block 24 to drive the insertion block 25 to reset, and enables the insertion block 25 and the slot 26 to be inserted, which facilitates the fixing of the connection plate 2, thereby enabling the dustproof plate 12 to be stably installed in the vent 11.

[0034] Furthermore, the movable rod 23 is movable inside the fixed rod 21, and the connecting block 24 is fixedly connected to the end of the movable rod 23 away from the spring 22. The slots 26 are arranged in two sets inside the connecting plate 2. By pulling the connecting block 24, the insert 25 can be separated from the slot 26, thereby releasing the fixation of the connecting plate 2, which makes it easier to pull the dustproof plate 12 out of the vent 11.

[0035] Furthermore, a positioning mechanism is provided on the inner side of the central cabinet body 1. The positioning mechanism includes a movable groove 3, which is located on the inner side of the central cabinet body 1. A rotating rod 31 is movably connected to the inner side of the movable groove 3. A first conical tooth 32 is fixedly connected to the surface of the rotating rod 31. A positive and negative screw 33 is movably connected to the inner side of the movable groove 3. A second conical tooth 34 is fixedly connected to the surface of the positive and negative screw 33. A moving block 35 is threadedly connected to the surface of the positive and negative screw 33. A limit plate 36 is fixedly connected to the upper surface of the moving block 35. A limit rod 37 is fixedly connected to the inner wall of the movable groove 3. The rotation of the rotating rod 31 can drive the first conical tooth 32 to rotate. Then, the second conical tooth 34 rotates under the action of the first conical tooth 32, which can drive the positive and negative screw 33 to rotate accordingly. This allows the moving block 35 to drive the limit plate 36 to move. The movement of the limit plate 36 can realize the positioning of the transformer and can initially fix the position of the transformer, thus facilitating the subsequent installation by the staff.

[0036] Furthermore, the movable slot 3 and the central cabinet body 1 are movably connected. The movable block 35 is in two sets and is movably connected by threads and positive and negative screws 33. By setting the movable block 35, when the positive and negative screws 33 rotate, the movable block 35 moves and drives the limit plate 36 to move accordingly, thereby facilitating the limiting of both sides of the transformer by the limit plate 36.

[0037] Furthermore, the movable block 35 is movable inside the movable groove 3, and the limiting rod 37 is fixedly connected in two sets to the inner surface of the movable groove 3. The movable block 35 and the limiting rod 37 are movably connected. By setting the limiting rod 37, the movable block 35 can be limited, which can prevent the movable block 35 from shifting under the action of the positive and negative screws 33, and facilitate the movable block 35 to stably drive the limiting plate 36 to move horizontally.

[0038] Working principle: When in use, the original two transformers are removed, and then 400V power supplies of corresponding capacity are drawn from the substations through the two outgoing lines. The two power supplies serve as backups for each other. The main transformer is equipped with a dual power supply cabinet, and the branch transformers are equipped with a tie switch connected to the main substation to supply the main substation with a dual power supply cabinet.

[0039] Pulling the connecting block 24 allows the movable rod 23 to move inside the fixed rod 21 under the action of the connecting block 24. At this time, the spring 22 is in a stretched state, and the insert 25 moves accordingly under the action of the connecting block 24 and separates from the slot 26, which can release the fixation of the connecting plate 2. Then, the dustproof plate 12 can be pulled out from the vent 11, so that the dustproof plate 12 can be removed for cleaning or replacement. When the dustproof plate 12 needs to be used, insert the dustproof plate 12 into the vent 11, and then release the connecting block 24. The movable rod 23 will return to its original position under the rebound action of the spring 22, so that the insert 25 can return to its original position and be inserted into the slot 26, thus fixing the connecting plate 2 and completing the installation of the dustproof plate 12.

[0040] Rotating the rotating rod 31 causes the first conical tooth 32 to rotate under the action of the rotating rod 31, and the second conical tooth 34 to rotate under the action of the first conical tooth 32, driving the positive and negative screws 33 to rotate. The moving block 35 is limited by the limiting rod 37 and moves inside the movable groove 3 and on the surface of the limiting rod 37 under the action of the positive and negative screws 33, thereby enabling the limiting plate 36 to move accordingly, so that the limiting plate 36 can position the transformer in the central cabinet body 1.

[0041] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the description above. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A switchboard for a transformer in a substation, comprising a cabinet, the cabinet comprising a switchboard body (1), wherein a ventilation opening (11) is fixedly connected to the inner side of the switchboard body (1), and a dustproof plate (12) is movably connected to the inner side of the ventilation opening (11). Its features are, S1. Remove the original two transformers; S2. A dual power supply cabinet with corresponding capacity of 400V is drawn from the outgoing lines of the two substations and connected to the main substation to supply power for the internal use of the main substation. The two power supplies serve as backups for each other. The main substation is equipped with a dual power supply cabinet, and the branch substations are equipped with interconnection switches.

2. The intermediate switchgear for a substation transformer according to claim 1, characterized in that: The surface of the vent (11) is provided with a dustproof mechanism, which includes a connecting plate (2). The connecting plate (2) is fixedly connected to the surface of the dustproof plate (12). A fixing rod (21) is fixedly connected to the surface of the vent (11). A spring (22) is fixedly connected to the inner wall of the fixing rod (21). A movable rod (23) is fixedly connected to the surface of the spring (22). A connecting block (24) is fixedly connected to the surface of the movable rod (23). A plug (25) is fixedly connected to the surface of the connecting block (24). A slot (26) is provided on the inner side of the connecting plate (2).

3. A substation transformer intermediate switchboard according to claim 2, characterized in that: The fixed rod (21) is fixedly connected to the surface of the vent (11) in two sets. One end of the spring (22) is fixedly connected to the fixed rod (21), and the other end of the spring (22) is fixedly connected to the movable rod (23).

4. A substation transformer intermediate switchboard according to claim 2, characterized in that: The movable rod (23) is movable inside the fixed rod (21), the connecting block (24) is fixedly connected to the end of the movable rod (23) away from the spring (22), and the slots (26) are arranged in two sets inside the connecting plate (2).

5. A switchgear for a substation transformer according to claim 4, characterized in that: The inner side of the central cabinet body (1) is provided with a positioning mechanism, which includes a movable groove (3). The movable groove (3) is opened on the inner side of the central cabinet body (1). A rotating rod (31) is movably connected to the inner side of the movable groove (3). A first conical tooth (32) is fixedly connected to the surface of the rotating rod (31). A positive and negative screw (33) is movably connected to the inner side of the movable groove (3). A second conical tooth (34) is fixedly connected to the surface of the positive and negative screw (33). A moving block (35) is threadedly connected to the surface of the positive and negative screw (33). A limit plate (36) is fixedly connected to the upper surface of the moving block (35). A limit rod (37) is fixedly connected to the inner wall of the movable groove (3).

6. A substation transformer intermediate switchboard according to claim 5, characterized in that: The movable slot (3) and the central cabinet body (1) are movably connected, and the movable block (35) is in two sets, which are movably connected by threads and positive and negative screws (33).

7. A substation transformer intermediate switchboard according to claim 5, characterized in that: The movable block (35) moves inside the movable groove (3), and the limiting rod (37) is fixedly connected in two sets to the inner surface of the movable groove (3). The movable block (35) and the limiting rod (37) are movably connected.

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