Combined mutual inductor with insulation protection structure

Abstract

The utility model relates to the technical field of mutual inductors, in particular to a combined mutual inductor with an insulation protection structure, which comprises a combined mutual inductor body, a plurality of conducting rods arranged on the combined mutual inductor body, insulation sleeves arranged on the outer surfaces of the conducting rods, a fixed bottom plate arranged at the bottom of the combined mutual inductor body, and two strip-shaped inserting plates arranged at the bottom of the fixed bottom plate. A mounting seat is arranged below the fixed bottom plate, the mounting seat comprises a fixed base, two frame-shaped butt joint blocks are arranged at the top of the fixed base, rectangular avoiding holes are formed in the opposite side faces of the two frame-shaped butt joint blocks, and the two strip-shaped inserting plates are inserted into the two frame-shaped butt joint blocks respectively. According to the combined mutual inductor with the insulation protection structure, the fixed bottom plate and the mounting base are connected through the strip-shaped insertion plate, the rectangular insertion hole, the frame-shaped butt joint block, the rectangular moving block and the bidirectional lead screw, a traditional bolt fixing mode is not needed, mounting and dismounting are easier, more convenient and faster, the maintenance efficiency is improved, and the maintenance workload and the time cost are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a combined transformer with an insulation protection structure. Background Art

[0002] A combined transformer is a device that integrates the functions of a current transformer and a voltage transformer and is widely used in power systems. By combining measurement and protection functions, it simplifies the design and installation process of power systems and improves the reliability and stability of system operation.

[0003] Existing combined transformers have good insulation performance, which is mainly achieved through the following several structures:

[0004] 1. Shell insulation: The shell is made of high-strength insulating material, effectively isolating the influence of the external environment on internal electrical components.

[0005] 2. Internal insulation layer: An insulation partition is set between the current transformer and the voltage transformer to prevent mutual influence and ensure the accuracy of measurement.

[0006] 3. Filling insulating material: The inside of the combined transformer is filled with high-insulation materials such as epoxy resin and silicone rubber. These materials not only provide excellent insulation performance but also greatly enhance the mechanical strength of the overall structure.

[0007] 4. Sealing structure: Advanced sealing technology is used to prevent moisture and pollutants from entering the equipment interior and keep the internal environment dry and clean.

[0008] 5. Insulation coating: An insulation coating that resists ultraviolet rays, moisture, and corrosion is applied to the surface of the shell to enhance the durability of the equipment in harsh environments.

[0009] Although existing combined transformers perform well in terms of insulation performance, there are still certain problems during installation and maintenance. Usually, bolts are required to fix it on the bracket. Although this fixing method can ensure the stability of the equipment during the initial installation, during subsequent maintenance or repair, the bolts need to be repeatedly disassembled and reinstalled. This not only increases the workload and time cost but also may cause wear of the bolts and loosening of the equipment, thus affecting its safety and stability. In view of this, we propose a combined transformer with an insulation protection structure. Content of the Utility Model

[0010] The purpose of the utility model is to provide a combined transformer with an insulation protection structure to solve the problems raised in the above background art.

[0011] To achieve the above purpose, the utility model provides the following technical solutions:

[0012] Combined transformer with insulation protection structure, including the combined transformer body, the main part of the whole transformer, integrating the functions of current transformer and voltage transformer. There are multiple conductive rods on the combined transformer body, which are the conductive parts for current import and export. The outer surface of the conductive rod is provided with an insulating sleeve, which covers the outer surface of the conductive rod to provide additional insulation protection and improve safety;

[0013] The bottom of the combined transformer body is provided with a fixed bottom plate, which is installed at the bottom of the combined transformer body and used to fix the combined transformer. The bottom of the fixed bottom plate is provided with two strip-shaped insertion plates arranged symmetrically left and right, which are used for quick connection with the mounting seat. The side of the strip-shaped insertion plate is provided with a rectangular jack, which is used for mating and inserting with the rectangular insertion block in the mounting seat;

[0014] Below the fixed bottom plate is provided with a mounting seat, which is fixed on the ground or other support structures and used to support and fix the combined transformer body. The mounting seat includes a fixed base. The top of the fixed base is provided with two frame-shaped docking blocks arranged symmetrically left and right. Rectangular avoidance holes are provided on the opposite sides of the two frame-shaped docking blocks. The two strip-shaped insertion plates are respectively inserted into the two frame-shaped docking blocks to realize the preliminary docking of the fixed bottom plate and the mounting seat. A bidirectional lead screw is rotatably connected between the two frame-shaped docking blocks and in the middle position. Rectangular moving blocks are threadedly connected to both thread areas of the bidirectional lead screw. Rectangular insertion blocks are provided on the opposite sides of the two rectangular moving blocks. The side of the rectangular insertion block away from the rectangular moving block passes through the rectangular avoidance hole and is inserted into the rectangular jack. By driving the two rectangular moving blocks to move synchronously relative to each other or synchronously in the opposite direction through the bidirectional lead screw, the two rectangular moving blocks respectively drive the two rectangular insertion blocks to move. When the two rectangular insertion blocks are respectively inserted into the two rectangular jacks, the two strip-shaped insertion plates can be respectively fixed in the two frame-shaped docking blocks, so as to realize the fixed installation of the fixed bottom plate and the mounting seat. This installation method can facilitate the staff to quickly disassemble and assemble the combined transformer in the later maintenance work and improve the maintenance efficiency;

[0015] In the middle of the front edge of the top of the fixed base, there is a rectangular fixing block for the rotational support of the rotating rod. A rotating rod is rotatably connected to the rectangular fixing block. The rear end of the rotating rod is provided with a driving bevel gear. The outer wall of the bidirectional lead screw is provided with a driven bevel gear meshed with the driving bevel gear. By driving the driving bevel gear to rotate through the rotating rod, the driving bevel gear drives the driven bevel gear to rotate, and then the driven bevel gear drives the bidirectional lead screw to rotate.

[0016] Preferably, the top of the fixed bottom plate is provided with four lifting rings arranged in a matrix, and the lifting rings are used for the operation of lifting the combined transformer.

[0017] Preferably, the bottom of the rectangular moving block fits against the top of the fixed base, and the top of the rectangular moving block fits against the bottom of the fixed base plate, ensuring the stable left - right movement of the rectangular moving block and preventing shaking.

[0018] Preferably, a protective box is provided in the middle of the top of the fixed base. The bidirectional lead screw and the rotating rod both penetrate through the side of the protective box, and the driving bevel gear and the driven bevel gear are both located inside the protective box, providing protection for the driving bevel gear and the driven bevel gear and preventing dust adhesion.

[0019] Preferably, a corrugated telescopic sleeve is provided between the protective box and the rectangular moving block. The corrugated telescopic sleeve is sleeved outside the bidirectional lead screw, preventing dust adhesion to the threaded area of the bidirectional lead screw and ensuring the long - term use of the bidirectional lead screw.

[0020] Preferably, a circular avoidance hole is formed on the side of the rectangular insert block, and the bidirectional lead screw is located inside the circular avoidance hole, preventing the bidirectional lead screw from blocking the left - right movement of the rectangular insert block.

[0021] Preferably, a knob is provided at the front end of the rotating rod. The knob is used for rotating the rotating rod operation and for manually rotating the rotating rod.

[0022] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0023] 1. For the combined instrument transformer with an insulating protection structure, the insulating sleeve outside the conductive rod provides additional insulation protection, improving the safety and reliability of the equipment and avoiding electric shock and leakage.

[0024] 2. For the combined instrument transformer with an insulating protection structure, the connection between the fixed base plate and the mounting seat is realized through the strip - shaped insertion plate, rectangular jack, frame - shaped docking block, rectangular moving block and bidirectional lead screw. There is no need to use the traditional bolt - fixing method, making the installation and disassembly more convenient and fast, improving the maintenance efficiency, and reducing the maintenance workload and time cost.

[0025] 3. For the combined instrument transformer with an insulating protection structure, the movement of the rectangular moving block is driven by the bidirectional lead screw, ensuring the reliable connection between the strip - shaped insertion plate and the frame - shaped docking block, avoiding the equipment loosening problem caused by bolt wear, and effectively improving the safety and stability of the equipment.

[0026] 4. For the combined instrument transformer with an insulating protection structure, the protective box provides protection for the driving bevel gear and the driven bevel gear, preventing dust and other pollutants from entering, effectively extending the service life of the equipment. At the same time, the corrugated telescopic sleeve protects the threaded area of the bidirectional lead screw, avoiding dust adhesion and ensuring the normal use of the bidirectional lead screw.

[0027] 5. For the combined mutual inductor with an insulation protection structure, the knob design at the front end of the rotating rod enables the staff to conveniently rotate the rotating rod manually, driving the driven bevel gear and the bidirectional lead screw to rotate through the driving bevel gear, simplifying the operation process and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of the overall first perspective of the present utility model;

[0029] Figure 2 is a schematic structural diagram of the overall second perspective of the present utility model;

[0030] Figure 3 is a schematic structural diagram of a part of the present utility model;

[0031] Figure 4 is a schematic structural diagram of the mounting base in the present utility model;

[0032] Figure 5 is one of the schematic structural diagrams of a part of the mounting base in the present utility model;

[0033] Figure 6 is the other schematic structural diagram of a part of the mounting base in the present utility model;

[0034] In the figure: 1. Combined mutual inductor body; 10. Conductive rod; 2. Fixed bottom plate; 20. Strip-shaped insertion plate; 200. Rectangular jack; 21. Suspension ring; 3. Mounting base; 30. Fixed base; 300. Rectangular fixing block; 31. Frame-shaped docking block; 310. Rectangular avoidance hole; 32. Bidirectional lead screw; 33. Driven bevel gear; 34. Rotating rod; 340. Knob; 35. Driving bevel gear; 36. Rectangular moving block; 37. Rectangular insertion block; 370. Circular avoidance hole; 38. Protection box; 39. Corrugated expansion sleeve; 4. Insulating sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the 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 the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0036] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0037] Please refer to Figures 1-6 , the present utility model provides a technical solution:

[0038] A combined transformer with an insulation protection structure, including a combined transformer body 1, which is the main part of the whole transformer and integrates the functions of a current transformer and a voltage transformer. A plurality of conductive rods 10 are provided on the combined transformer body 1, which are the conductive parts for current import and export. An insulating sleeve 4 is provided on the outer surface of the conductive rod 10, covering the outer surface of the conductive rod 10, for providing additional insulation protection and improving safety.

[0039] A fixed bottom plate 2 is provided at the bottom of the combined transformer body 1, which is installed at the bottom of the combined transformer body 1 for fixing the combined transformer. Two strip-shaped insertion plates 20 arranged symmetrically left and right are provided at the bottom of the fixed bottom plate 2 for quick connection with the mounting seat 3. A rectangular jack 200 is provided on the side of the strip-shaped insertion plate 20 for mating and plugging with the rectangular insertion block 37 in the mounting seat 3.

[0040] Below the fixed bottom plate 2 is provided with a mounting base 3, which is fixed on the ground or other support structures and is used to support and fix the combined current transformer body 1. The mounting base 3 includes a fixed base 30. The top of the fixed base 30 is provided with a plurality of mounting holes for bolts to pass through. Bolts can be used to fixedly install the fixed base 30 on the bracket. The top of the fixed base 30 is provided with two frame-shaped docking blocks 31 arranged symmetrically left and right. The opposite sides of the two frame-shaped docking blocks 31 are both provided with rectangular avoidance holes 310. Two strip-shaped insertion plates 20 are respectively inserted into the two frame-shaped docking blocks 31 to achieve the preliminary docking of the fixed bottom plate 2 and the mounting base 3. Between the two frame-shaped docking blocks 31 and at the middle position, there is a bidirectional lead screw 32 rotatably connected. Both thread areas of the bidirectional lead screw 32 are threadedly connected with rectangular moving blocks 36. The opposite sides of the two rectangular moving blocks 36 are both provided with rectangular insertion blocks 37. The side of the rectangular insertion block 37 away from the rectangular moving block 36 passes through the rectangular avoidance hole 310 and is inserted into the rectangular insertion hole 200. By driving the two rectangular moving blocks 36 to move synchronously relative to each other or synchronously in the opposite direction through the bidirectional lead screw 32, the two rectangular moving blocks 36 respectively drive the two rectangular insertion blocks 37 to move. When the two rectangular insertion blocks 37 are respectively inserted into the two rectangular insertion holes 200, the two strip-shaped insertion plates 20 can be respectively fixed in the two frame-shaped docking blocks 31, so as to achieve the fixed installation of the fixed bottom plate 2 and the mounting base 3. This installation method can facilitate the staff to quickly disassemble and assemble the combined current transformer during the later maintenance work and improve the maintenance efficiency;

[0041] In the middle of the front side edge of the top of the fixed base 30, there is a rectangular fixed block 300 for the rotary support of the rotating rod 34. The rotating rod 34 is rotatably connected to the rectangular fixed block 300. The rear end of the rotating rod 34 is provided with a driving bevel gear 35. The outer wall of the bidirectional lead screw 32 is provided with a driven bevel gear 33 meshing and driving with the driving bevel gear 35. By driving the driving bevel gear 35 to rotate through the rotating rod 34, the driving bevel gear 35 drives the driven bevel gear 33 to rotate, and further the driven bevel gear 33 drives the bidirectional lead screw 32 to rotate.

[0042] In this embodiment, the top of the fixed bottom plate 2 is provided with four lifting rings 21 arranged in a matrix. The lifting rings 21 are used for the operation of lifting the combined current transformer.

[0043] Specifically, the bottom of the rectangular moving block 36 is in contact with the top of the fixed base 30, and the top of the rectangular moving block 36 is in contact with the bottom of the fixed bottom plate 2 to ensure the stable left and right movement of the rectangular moving block 36 and avoid shaking.

[0044] Furthermore, in the middle of the top of the fixed base 30, there is a protective box 38. The bidirectional lead screw 32 and the rotating rod 34 both penetrate the side surface of the protective box 38. The driving bevel gear 35 and the driven bevel gear 33 are both located inside the protective box 38, which plays a protective role for the driving bevel gear 35 and the driven bevel gear 33 to avoid adhesion of dust.

[0045] Further, a corrugated telescopic sleeve 39 is provided between the protective box 38 and the rectangular moving block 36. The corrugated telescopic sleeve 39 is sleeved outside the bidirectional lead screw 32 to prevent dust from adhering to the threaded area of the bidirectional lead screw 32 and ensure that the bidirectional lead screw 32 can be used for a long time.

[0046] Further, a circular avoidance hole 370 is formed in the side surface of the rectangular insert block 37, and the bidirectional lead screw 32 is located in the circular avoidance hole 370 to prevent the bidirectional lead screw 32 from blocking the left - right movement of the rectangular insert block 37.

[0047] Further, a knob 340 is provided at the front end of the rotating rod 34. The knob 340 is used for rotating the rotating rod 34 and is used to manually rotate the rotating rod 34.

[0048] When the combined transformer with an insulating protection structure of this embodiment is in use, the staff first fixedly installs the fixed base 30 on the bracket, and then installs the fixed bottom plate 2 and the mounting seat 3. Align the strip - shaped insertion plate 20 on the fixed bottom plate 2 with the frame - shaped docking block 31 on the mounting seat 3 and insert them into the two frame - shaped docking blocks 31 respectively to ensure successful initial docking. By rotating the knob 340 on the rotating rod 34, the rotating rod 34 is driven to rotate, driving the driving bevel gear 35, and the bidirectional lead screw 32 is driven to rotate through the driven bevel gear 33. Thus, the rectangular moving block 36 is driven to move synchronously in the reverse direction through the thread, and the rectangular moving block 36 drives the rectangular insert block 37 to move. When the rectangular insert block 37 is inserted into the rectangular insertion hole 200 on the strip - shaped insertion plate 20, the fixing effect is achieved. In daily use, the conductive rod 10 is connected to the current and voltage lines to be monitored in the power system, and it is ensured that the insulating sleeve 4 on the outer surface of the conductive rod 10 is intact to provide additional insulation protection. During maintenance, regularly check each connection part of the combined transformer, including the connection conditions of the conductive rod 10, the fixed bottom plate 2, the strip - shaped insertion plate 20 and the mounting seat 3, to ensure that each part is firmly fastened and reliable. If it is necessary to disassemble the combined transformer for repair, rotate the knob 340 at the front end of the rotating rod 34 to drive the bidirectional lead screw 32 in the reverse direction, so that the rectangular moving block 36 drives the rectangular insert block 37 to withdraw from the rectangular insertion hole 200 of the strip - shaped insertion plate 20, and then the connection between the fixed bottom plate 2 and the mounting seat 3 can be easily disassembled. Through the above steps, it can be ensured that the combined transformer with an insulating protection structure is simple to operate, efficient and reliable during installation, use and maintenance.

[0049] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. Combined instrument transformer with insulation protection structure, including the combined instrument transformer body (1), characterized in that: A plurality of conductive rods (10) are provided on the combined mutual inductor body (1). An insulating sleeve (4) is provided on the outer surface of the conductive rod (10). A fixed bottom plate (2) is provided at the bottom of the combined mutual inductor body (1). Two strip-shaped insertion plates (20) arranged symmetrically left and right are provided at the bottom of the fixed bottom plate (2). A rectangular insertion hole (200) is formed in the side surface of the strip-shaped insertion plate (20). An installation seat (3) is provided below the fixed bottom plate (2). The installation seat (3) includes a fixed base (30). Two frame-shaped docking blocks (31) arranged symmetrically left and right are provided at the top of the fixed base (30). Rectangular avoidance holes (310) are formed in the opposite side surfaces of the two frame-shaped docking blocks (31). The two strip-shaped insertion plates (20) are respectively inserted into the two frame-shaped docking blocks (31). A bidirectional lead screw (32) is rotatably connected at a position in the middle between the two frame-shaped docking blocks (31). Rectangular moving blocks (36) are threadedly connected to both thread regions of the bidirectional lead screw (32). Rectangular insertion blocks (37) are provided on the opposite side surfaces of the two rectangular moving blocks (36). One side of the rectangular insertion block (37) away from the rectangular moving block (36) passes through the rectangular avoidance hole (310) and is inserted into the rectangular insertion hole (200). A rectangular fixing block (300) is provided in the middle of the front edge of the top of the fixed base (30). A rotating rod (34) is rotatably connected to the rectangular fixing block (300). A driving bevel gear (35) is provided at the rear end of the rotating rod (34). A driven bevel gear (33) meshing and driving with the driving bevel gear (35) is provided on the outer wall of the bidirectional lead screw (32).

2. The combined instrument transformer with an insulation protection structure according to claim 1, characterized in that: Four lifting rings (21) arranged in a matrix are provided on the top of the fixed bottom plate (2). The lifting rings (21) are used for the operation of lifting the combined mutual inductor.

3. The combined mutual inductor with an insulation protection structure according to claim 1, characterized in that: The bottom of the rectangular moving block (36) is in contact with the top of the fixed base (30), and the top of the rectangular moving block (36) is in contact with the bottom of the fixed bottom plate (2).

4. The combined mutual inductor with an insulation protection structure according to claim 1, characterized in that: A protective box (38) is provided in the middle of the top of the fixed base (30). The bidirectional lead screw (32) and the rotating rod (34) both penetrate through the side surface of the protective box (38). The driving bevel gear (35) and the driven bevel gear (33) are both located inside the protective box (38).

5. The combined current transformer with an insulation protection structure according to claim 4, wherein: A corrugated telescopic sleeve (39) is provided between the protective box (38) and the rectangular moving block (36). The corrugated telescopic sleeve (39) is sleeved on the outside of the bidirectional lead screw (32).

6. The combined transformer with an insulation protection structure according to claim 1, characterized in that: A circular avoidance hole (370) is formed in the side surface of the rectangular insertion block (37). The bidirectional lead screw (32) is located inside the circular avoidance hole (370).

7. The combined transformer with an insulation protection structure according to claim 1, wherein: A knob (340) is provided at the front end of the rotating rod (34). The knob (340) is used for the operation of rotating the rotating rod (34).

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