Voltage transformer with high sealing performance

Abstract

The utility model discloses a voltage transformer with high sealing performance, which comprises a transformer box body, an insulating protective frame and a sealing cover plate, a fixing plate is arranged in the middle of the upper end of the transformer box body, cylinders are arranged on two sides of the fixing plate, two ends of the cylinders are respectively and movably connected with the fixing plate and the sealing cover plate through connecting lugs, and the insulating protective frame is arranged on the insulating protective frame. Relates to the technical field of transformers. When disassembly and assembly are needed, the sealing cover plate can be driven to turn over and opened by retracting the air cylinder, so that the internal structure of the mutual inductor box body can be maintained and overhauled, long-term work is facilitated, the structure is stable, the sealing cover plate is pushed by extending the air cylinder, the position of the sealing cover plate is kept stable, and the disassembly and assembly efficiency is improved. And through the pressure of the air cylinder, the sealing effect can be kept for a long time, and the phenomenon of leakage of cooling oil is effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a voltage transformer with high sealing performance. Background Technique

[0002] A current transformer is an instrument that measures by converting a large current on the primary side into a small current on the secondary side based on the principle of electromagnetic induction. A current transformer consists of a closed iron core and windings. Its primary side winding has very few turns and is connected in series in the circuit where the current to be measured is located.

[0003] In the prior art, a voltage transformer with high sealing performance, such as the one with the publication number CN213183898U, relates to the technical field of voltage transformers. The utility model includes a voltage transformer body. A cooling box is installed on one side of the voltage transformer body. One side of the inner wall of the voltage transformer body is connected with a first diversion pile. A plurality of diversion rings are installed on the inner wall of the cooling box. One end of the first diversion pile is connected and communicated with the innermost diversion ring; the plurality of diversion rings form a vortex shape. By installing the cooling box on one side of the voltage transformer body, the utility model can introduce the coolant into the diversion rings, so that the diversion rings can quickly cool the inside of the voltage transformer. The installed fan can blow the hot air inside the voltage transformer towards the diversion rings, enabling the coolant to quickly cool the hot air. The cooled air circulates inside the voltage transformer, thereby further improving the cooling effect on the voltage transformer and increasing the cooling efficiency of the device.

[0004] However, in the above technology, during the insulation protection work of the existing transformer using an oil-immersed box body, the transformer housing cannot be quickly disassembled and assembled for maintenance, and at the same time, it is prone to cooling oil leakage. Therefore, it is necessary to propose a voltage transformer with high sealing performance to solve the above technical problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a voltage transformer with high sealing performance to solve the problems in the above background technique that during the insulation protection work of the existing transformer using an oil-immersed box body, the transformer housing cannot be quickly disassembled and assembled for maintenance, and at the same time, it is prone to cooling oil leakage.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A voltage transformer with high sealing performance includes a transformer box body, an insulation protection frame, and a sealing cover plate. The insulation protection frame is installed outside the transformer box body, the sealing cover plate is installed above the transformer box body. A fixing plate is installed in the middle of the upper end of the transformer box body. Cylinders are installed on both sides of the fixing plate. Both ends of the cylinders are respectively movably connected to the fixing plate and the sealing cover plate through connecting ears.

[0007] Preferably, two current transformer cores are installed inside the current transformer box body. An oil cooling layer for the current transformer is arranged outside the current transformer cores. The two current transformer cores are connected to the current transformer box body through fixing screws.

[0008] Preferably, rubber columns are installed outside the insulation protection frame, and the rubber columns are used to protect the four corners of the current transformer box body.

[0009] Preferably, heat dissipation plates are installed at the front end and the rear end of the insulation protection frame. The heat dissipation plates are embedded outside the current transformer box body and are welded to the current transformer box body, and the heat dissipation plates are fixedly connected to the insulation protection frame.

[0010] Preferably, elastic support columns are installed on both sides of the insulation protection frame. The elastic support columns are connected to the insulation protection frame through buckles, and the elastic support columns are used to protect the outer surface of the current transformer box body.

[0011] Preferably, the fixing plate is connected to the current transformer box body through fixing screws. The sealing cover plate is hermetically connected to the current transformer box body through a sealing gasket. The sealing cover plate is movably connected to the current transformer box body through a connecting hinge. The sealing cover plate is used to open and close the current transformer box body. A winding structure is installed at the upper end of the sealing cover plate, and the winding structure is used to protect the wiring terminal. A wiring terminal is installed above the winding structure.

[0012] Preferably, an insulation base is installed at the lower end of the current transformer box body. A support cushion plate is installed between the current transformer box body and the insulation base, and the support cushion plate is used to prevent the bottom of the current transformer box body from getting damp. A protection bottom frame is installed between the insulation base and the insulation protection frame.

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

[0014] This highly sealed voltage transformer can perform voltage transformation work through the current transformer cores inside the current transformer box body during use, and can cool the current transformer cores inside the current transformer box body through the oil cooling layer for the current transformer. During long-term use, it can be protected by the insulation protection frame. When disassembly and assembly are required, the sealing cover plate can be driven to turn over by the retraction cylinder to open the sealing cover plate, so that the internal structure of the current transformer box body can be maintained and repaired for long-term operation with stable structure. Moreover, the sealing cover plate can be pushed by the extension cylinder to keep its position stable, so as to perform rapid sealing work. The sealing effect can be maintained for a long time through the pressure of the cylinder, effectively preventing the leakage of cooling oil to adapt to the sealing and insulation work. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is an axonometric view of the front view of the present utility model;

[0016] Figure 2 This is an axonometric view of the present utility model from the bottom up;

[0017] Figure 3 This is the internal structure diagram of the present utility model.

[0018] In the figure: 1. Transformer box body; 101. Transformer iron core; 102. Transformer cooling oil cladding; 2. Insulation protection frame; 201. Rubber column; 202. Heat dissipation plate; 203. Elastic support column; 3. Sealing cover plate; 301. Winding structure; 302. Wiring terminal; 303. Connecting hinge; 4. Fixed plate; 401. Cylinder; 5. Insulation base; 501. Support backing plate; 502. Protection chassis. Specific implementation manners

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0020] Please refer to Figure 1 - Figure 3 , an embodiment provided by the present utility model: A highly sealed voltage transformer, including a transformer box body 1, an insulation protection frame 2 and a sealing cover plate 3. The insulation protection frame 2 is installed outside the transformer box body 1, and the sealing cover plate 3 is installed above the transformer box body 1. A fixed plate 4 is installed in the middle of the upper end of the transformer box body 1. Cylinders 401 are installed on both sides of the fixed plate 4. The two ends of the cylinders 401 are respectively movably connected to the fixed plate 4 and the sealing cover plate 3 through connecting ears. During use, the cylinders 401 can be contracted to drive the sealing cover plate 3 to flip and open the sealing cover plate 3, so as to maintain and repair the internal structure of the transformer box body 1 for long-term operation with stable structure. And by extending the cylinders 401 to push the sealing cover plate 3, the position of the sealing cover plate 3 can be kept stable, so as to perform rapid sealing work. Through the pressure of the cylinders 401, the sealing effect can be maintained for a long time to adapt to the sealing and insulation work, with strong practicability.

[0021] Further, two transformer iron cores 101 are installed inside the transformer box body 1, and a transformer cooling oil cladding 102 is arranged outside the transformer iron cores 101. The two transformer iron cores 101 are connected to the transformer box body 1 through fixing screws. During use, voltage transformation work can be carried out through the transformer iron cores 101 inside the transformer box body 1, and the transformer iron cores 101 inside the transformer box body 1 can be cooled through the transformer cooling oil cladding 102, which is beneficial for outdoor work.

[0022] Further, rubber columns 201 are installed outside the insulation protection frame 2. The rubber columns 201 are used to protect the four corners of the transformer box body 1. The outside of the transformer box body 1 is protected by the insulation protection frame 2, and then the rubber columns 201 are used to protect the transformer box body 1 to reduce the pressure generated by impact.

[0023] Further, heat dissipation plates 202 are installed at both the front end and the rear end of the insulation protection frame 2. The heat dissipation plates 202 are embedded outside the transformer box body 1 and are welded to the transformer box body 1, and the heat dissipation plates 202 are fixedly connected to the insulation protection frame 2. During long-term operation, heat dissipation work is carried out on the outer surface of the transformer box body 1 through the heat dissipation plates 202.

[0024] Further, elastic support columns 203 are installed on both sides of the insulation protection frame 2. The elastic support columns 203 are connected to the insulation protection frame 2 by buckles. The elastic support columns 203 are used to protect the outer surface of the transformer box body 1. During use, the side of the transformer box body 1 can be protected by the elastic support columns 203, and the position stability of the insulation protection frame 2 can be improved by the elastic support columns 203 with elasticity.

[0025] Further, the fixing plate 4 is connected to the transformer box body 1 by fixing screws. The sealing cover plate 3 is hermetically connected to the transformer box body 1 through a sealing gasket. The sealing cover plate 3 is movably connected to the transformer box body 1 through a connecting hinge 303. The sealing cover plate 3 is used to open and close the transformer box body 1. A winding structure 301 is installed at the upper end of the sealing cover plate 3. The winding structure 301 is used to protect the wiring terminal, and a wiring terminal 302 is installed above the winding structure 301.

[0026] Further, an insulation base 5 is installed at the lower end of the transformer box body 1. A support cushion plate 501 is installed between the transformer box body 1 and the insulation base 5. The support cushion plate 501 is used to prevent the bottom of the transformer box body 1 from getting damp. A protection bottom frame 502 is installed between the insulation base 5 and the insulation protection frame 2. The safety of the box body is strengthened through the protection bottom frame 502. An insulation protection frame 2 is installed on the outer surface of the transformer box body 1. An insulation board is installed through the insulation protection frame 2. Cooperating with the insulation base 5, it plays an insulating role on the surface of the box body. By setting the support cushion plate 501, a good support and protection effect is achieved.

[0027] Working principle: When in use, voltage transformation can be carried out through the transformer core 101 inside the transformer box body 1, and the transformer core 101 inside the transformer box body 1 can be cooled through the transformer cooling oil cladding 102. The sealing cover plate 3 is pushed by the extension cylinder 401 to keep the position of the sealing cover plate 3 stable, so that rapid sealing work can be carried out. Through the pressure of the cylinder 401, the sealing effect can be maintained for a long time to adapt to the sealing and insulation work, with strong practicability. The outside of the transformer box body 1 is protected by the insulating protection frame 2, and then the transformer box body 1 is protected by the rubber column 201 to reduce the pressure generated by impact. The side of the transformer box body 1 can be protected by the elastic support column 203, and the position stability of the insulating protection frame 2 can be improved through the elastic support column 203 with elasticity. During long-term operation, heat dissipation work is carried out on the outer surface of the transformer box body 1 through the heat dissipation plate 202. When disassembly and assembly are required, the contraction cylinder 401 can be used to drive the sealing cover plate 3 to turn over and open the sealing cover plate 3, so that the internal structure of the transformer box body 1 can be maintained and repaired for long-term operation. The structure is stable. And the sealing cover plate 3 is pushed by the extension cylinder 401 to keep the position of the sealing cover plate 3 stable, so that rapid sealing work can be carried out. Through the pressure of the cylinder 401, the sealing effect can be maintained for a long time to adapt to the sealing and insulation work, effectively preventing the leakage of cooling oil.

Claims

1. A voltage transformer with high sealing performance, characterized in that: The invention comprises a transformer box (1), an insulating protection frame (2) and a sealing cover plate (3), wherein the insulating protection frame (2) is installed outside the transformer box (1), the sealing cover plate (3) is installed above the transformer box (1), a fixing plate (4) is installed in the middle of the upper end of the transformer box (1), cylinders (401) are installed on both sides of the fixing plate (4), and the two ends of the cylinder (401) are movably connected to the fixing plate (4) and the sealing cover plate (3) respectively through connecting ears.

2. A high-sealing voltage transformer according to claim 1, characterized in that: Two transformer cores (101) are installed inside the transformer box (1), a transformer cooling oil sheath (102) is arranged outside the transformer core (101), and the two transformer cores (101) are connected to the transformer box (1) via fixing screws.

3. A high-sealing voltage transformer according to claim 1, characterized in that: Rubber columns (201) are installed outside the insulating protection frame (2), and the rubber columns (201) are used to protect the four corners of the transformer box (1).

4. A high-sealing voltage transformer according to claim 1, characterized in that: The front and rear ends of the insulating protection frame (2) are both provided with heat dissipation plates (202); the heat dissipation plates (202) are embedded in the outside of the transformer box (1) and are welded to the transformer box (1); and the heat dissipation plates (202) are fixedly connected to the insulating protection frame (2).

5. A high-sealing voltage transformer according to claim 1, characterized in that: Elastic support columns (203) are installed on both sides of the insulation protection frame (2); the elastic support columns (203) are connected to the insulation protection frame (2) via snap fasteners; and the elastic support columns (203) are used to protect the outer surface of the transformer box (1).

6. A high-sealing voltage transformer according to claim 1, characterized in that: The fixing plate (4) is connected to the transformer box (1) via fixing screws, the sealing cover plate (3) is sealed and connected to the transformer box (1) via a sealing gasket, the sealing cover plate (3) is movably connected to the transformer box (1) via a connecting hinge (303), the sealing cover plate (3) is used to switch the transformer box (1), a winding structure (301) is installed on the upper end of the sealing cover plate (3), the winding structure (301) is used to protect the wiring terminal, and the wiring terminal (302) is installed above the winding structure (301).

7. A high-sealing voltage transformer according to claim 1, characterized in that: An insulating base (5) is installed at the lower end of the transformer box (1), a supporting pad (501) is installed between the transformer box (1) and the insulating base (5), and the supporting pad (501) is used to prevent the bottom of the transformer box (1) from getting wet, and a protective base frame (502) is installed between the insulating base (5) and the insulating protective frame (2).

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