Voltage transformer with shielding structure

Abstract

The utility model relates to the technical field of voltage transformers, and discloses a voltage transformer with a shielding structure. The voltage transformer with the shielding structure comprises a protective shell, a supporting frame, a shielding shell, an iron core, a primary coil, a secondary coil and an interface end, the supporting frame is fixedly connected to the bottom of the protective shell, the shielding shell is arranged in the protective shell, the iron core is arranged in the shielding shell, the primary coil is arranged on the left side of the iron core, and the secondary coil is arranged on the right side of the primary coil. A secondary coil is arranged on the right side of the iron core, interface ends are arranged on the left side and the right side of the shielding shell, and the shielding assembly is arranged on the surface of the iron core. When the voltage transformer operates, electromagnetic waves are comprehensively absorbed under the action of the shielding assembly, interference of the electromagnetic waves on signals is reduced, and therefore measurement precision and accuracy are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of voltage transformers and discloses a voltage transformer with a shielding structure. Background Art

[0002] A voltage transformer is a special transformer that is mainly used in power systems to convert high voltage into low voltage to provide safe and reliable voltage measurement and protection equipment. Its working principle is to use the principle of electromagnetic induction. When high voltage passes through the primary coil, a magnetic field is generated. This magnetic field generates an induced electromotive force in the secondary coil, thereby generating a low voltage on the secondary side. The transformation ratio (i.e. the ratio of input to output voltage) can be changed by adjusting the number of turns of the primary and secondary coils. It is usually installed on high-voltage switchgear to facilitate voltage measurement and protection operations.

[0003] Patent authorization publication number CN217881056U, a voltage transformer, including a connector, one side of the connector is connected to a transfer plate, two ends of the transfer plate are provided with connection mechanisms, the bottom of the transfer plate is provided with a base, and two sides of the base are provided with fixing mechanisms. The above patent sets a clamping mechanism, rotates the screw to make it rotate and move inside the positioning plate through the thread groove, so as to facilitate clamping and fixing the mounting seat, but when using the voltage transformer, the electromagnetic radiation signal will interfere with the signal received by the measuring voltage transformer. If the electromagnetic wave is not absorbed, the measurement precision and accuracy of the voltage transformer will be reduced.

[0004] Therefore, a voltage transformer with a shielding structure is needed. Utility Model Content

[0005] In order to overcome the shortcomings of the existing patents that when using a voltage transformer, the electromagnetic radiation signal will interfere with the signal received by the measuring voltage transformer, and if the electromagnetic wave is not absorbed, the measurement precision and accuracy of the voltage transformer will be reduced, the purpose of the utility model is to provide a voltage transformer with a shielding structure.

[0006] In order to achieve the purpose of having a shielding structure, the utility model provides the following technical solutions: a voltage transformer with a shielding structure, including a protective shell, a supporting frame, a shielding shell, an iron core, a primary coil, a secondary coil and an interface end, the bottom of the protective shell is fixedly connected to the supporting frame, a shielding shell is arranged inside the protective shell, an iron core is arranged inside the shielding shell, a primary coil is arranged on the left side of the iron core, a secondary coil is arranged on the right side of the iron core, interface ends are arranged on both sides of the shielding shell, and a shielding component is also included, and a shielding component is arranged on the surface of the iron core.

[0007] In addition, it is particularly preferred that it also includes a protective shell, a first connecting frame, a first mounting frame and a DC fan, multiple protective shells are arranged on the top of the protective shell, the first connecting frame is fixedly connected to the inside of the protective shell, the first mounting frame is installed on the first connecting frame, and the DC fan for heat dissipation is installed on the first mounting frame.

[0008] In addition, it is particularly preferred that it also includes a first clamping plate, a second clamping plate and mounting bolts, the first clamping plate is arranged on the interface end, the second clamping plate is arranged on the interface end, a plurality of first mounting holes are opened on the first clamping plate, a plurality of second mounting holes are arranged on the second clamping plate, and the first mounting holes and the second mounting holes are jointly threadedly provided with mounting bolts.

[0009] In addition, it is particularly preferred that it also includes hinges, a rotating plate, a second connecting frame, a clamping plate, a rotating shaft, a second mounting frame and a baffle, two hinges are installed on the protective shell, a rotating plate is rotatably arranged on the two hinges, the second connecting frame is fixedly connected to the rotating plate, the clamping plate is fixedly connected to the second connecting frame, a rotating shaft is arranged on the front side of the protective shell, a second mounting frame is installed on the front side of the protective shell, and a baffle is rotatably arranged on the rotating shaft.

[0010] In addition, it is particularly preferred that it also includes a slider, a connecting chain and a mounting seat, a sliding groove is opened on the protective shell, a slider is slidably arranged in the sliding groove, a connecting chain is arranged on the slider, a mounting seat is fixedly connected to the mounting frame, and the connecting chain is connected to the mounting seat.

[0011] In addition, it is particularly preferred that a dustproof tube is further included, and a plurality of dustproof tubes are arranged at the bottom of the protective shell.

[0012] Compared with the prior art, the utility model provides a voltage transformer with a shielding structure, which has the following beneficial effects: 1. When the voltage transformer is running, the electromagnetic waves are fully absorbed under the action of the shielding component, reducing the interference of electromagnetic waves on the signal, thereby improving the measurement precision and accuracy.

[0013] 2. The heat inside the protective shell is extracted by running the DC fan, thereby accelerating the air circulation inside the protective shell, thereby achieving the purpose of heat dissipation and preventing the internal temperature of the protective shell from being too high and affecting the normal operation of the voltage transformer.

[0014] 3. By placing the mounting plate between the first clamping plate and the second clamping plate, tightening the mounting bolts with a tool, moving the second clamping plate toward the side close to each other, clamping the mounting plate, thereby facilitating the installation of the voltage transformer.

[0015] 4. By turning the baffle upward to disengage it from the card plate, and then holding the card plate and turning the rotating plate outward to open the protective shell, there is no need to disassemble the protective shell, thereby achieving the purpose of facilitating maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0017] Figure 2 It is a three-dimensional cross-sectional structural schematic diagram of the shielding shell, shielding assembly and interface end of the utility model.

[0018] Figure 3 It is a three-dimensional cross-sectional structural schematic diagram of the iron core, primary coil and secondary coil of the utility model.

[0019] Figure 4 It is a schematic diagram of the three-dimensional cross-sectional structure of the protective shell, the protection shell and the DC fan of the utility model.

[0020] Figure 5 It is a three-dimensional structural schematic diagram of the first clamping plate, the second clamping plate and the mounting bolts of the utility model.

[0021] Figure 6 It is a three-dimensional cross-sectional structural schematic diagram of the hinge, baffle and clamping plate of the utility model.

[0022] Figure 7 It is a three-dimensional cross-sectional structural schematic diagram of the rotating plate and the dustproof tube of the utility model.

[0023] Figure 8 For this utility model Figure 7 Enlarged view of point A in the middle.

[0024] Among them, the above-mentioned drawings include the following figure marks: 1. protective shell, 101. support frame, 2. shielding shell, 3. iron core, 4. primary coil, 5. secondary coil, 6. shielding assembly, 7. interface end, 8. protective shell, 9. first connecting frame, 901. first mounting frame, 10. DC fan, 11. first clamping plate, 12. second clamping plate, 13. mounting bolt, 1301. first mounting hole, 1302. second mounting hole, 14. hinge, 15. rotating plate, 16. second connecting frame, 17. card plate, 18. rotating shaft, 19. second mounting frame, 20. baffle, 21. dustproof tube, 22. slide groove, 23. slider, 24. connecting chain, 25. mounting seat. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Embodiment 1: A voltage transformer with a shielding structure, see Figure 1-Figure 8, including a protective shell 1, a support frame 101, a shielding shell 2, an iron core 3, a primary coil 4, a secondary coil 5 and an interface terminal 7. The bottom of the protective shell 1 is fixedly connected to the support frame 101, and four mounting holes are opened on the support frame 101. The support frame 101 supports the protective shell 1 to prevent the protective shell 1 from directly contacting the ground and causing moisture. A shielding shell 2 is arranged inside the protective shell 1, and an iron core 3 is arranged inside the shielding shell 2. A primary coil 4 is arranged on the left side of the iron core 3, and a secondary coil 5 is arranged on the right side of the iron core 3. Interface terminals 7 are arranged on both sides of the shielding shell 2, and a shielding component 6 is arranged on the surface of the iron core 3. Three dustproof pipes 21 are arranged at the bottom of the protective shell 1 to prevent dust from entering the protective shell 1 and affecting the operation of the voltage transformer.

[0027] When the voltage transformer is needed, the protective shell 1 is moved to a suitable position, the bolts are inserted into the mounting holes in the support frame 101, the bolts are tightened with tools to fix the voltage transformer, the connecting wires are inserted into the interface terminal 7, and the voltage transformer is turned on to convert the high voltage into a low voltage in the power system to provide a safe and reliable voltage measurement and protection device. When the voltage transformer is running, the shielding component 6 fully absorbs the electromagnetic waves to reduce the interference of electromagnetic waves on the signal, thereby improving the measurement precision and accuracy.

[0028] Example 2: Based on Example 1, please refer to Figure 1 and Figure 4 Three protective shells 8 are arranged on the top of the protective shell 1, and a first connecting frame 9 is fixedly connected inside the protective shell 8. A first mounting frame 901 is arranged on the first connecting frame 9 by bolt connection, and a DC fan 10 for heat dissipation is arranged on the first mounting frame 901 by bolt connection.

[0029] The voltage transformer generates heat when it is running. The DC fan 10 is turned on. The DC fan 10 runs to extract the heat inside the protective shell 1, thereby accelerating the air circulation inside the protective shell 1, thereby achieving the purpose of heat dissipation and preventing the internal temperature of the protective shell 1 from being too high and affecting the normal operation of the voltage transformer.

[0030] See also Figure 1 and Figure 5 A first clamping plate 11 is provided on the interface end 7, a second clamping plate 12 is provided on the interface end 7, four first mounting holes 1301 are opened on the first clamping plate 11, four second mounting holes 1302 are provided on the second clamping plate 12, and the first mounting holes 1301 and the second mounting holes 1302 are both threadedly provided with mounting bolts 13.

[0031] Before using the voltage transformer, rotate the mounting bolts 13 to move the second clamping plate 12 away from each other, and then place the mounting plate between the first clamping plate 11 and the second clamping plate 12. Use a tool to tighten the mounting bolts 13 to move the second clamping plate 12 toward each other, and clamp the mounting plate to facilitate the installation of the voltage transformer.

[0032] See also Figure 6 , Figure 7 and Figure 8 The protective shell 1 is provided with two hinges 14 by bolt connection, and a rotating plate 15 is rotatably provided on the two hinges 14 together, a second connecting frame 16 is fixedly connected to the rotating plate 15, and a card plate 17 is fixedly connected to the second connecting frame 16. A rotating shaft 18 is provided on the front side of the protective shell 1, and a second mounting frame 19 is provided on the front side of the protective shell 1 by bolt connection. A baffle 20 is rotatably provided on the rotating shaft 18, and the contact surface between the baffle 20 and the card plate 17 is an inclined surface, so that the card plate 17 can squeeze the baffle 20 to rotate outward, and a slide groove 22 is provided on the protective shell 1, and a slider 23 is slidably provided in the slide groove 22, and a connecting chain 24 is provided on the slider 23. A mounting seat 25 is fixedly connected to the mounting frame, and the connecting chain 24 is connected to the mounting seat 25. Pulling the connecting chain 24 upward drives the baffle 20 to rotate upward.

[0033] When the voltage transformer needs to be repaired, the baffle 20 is rotated upward to disengage it from the clamping plate 17, and then the clamping plate 17 is held and the rotating plate 15 is rotated outward to open the protective shell 1, so that there is no need to disassemble the protective shell 1, thereby facilitating maintenance. The parts inside the voltage transformer can then be repaired. After the maintenance is completed, the rotating plate 15 is held and the clamping plate 17 is rotated inward to close the protective shell 1. The clamping plate 17 squeezes the baffle 20 and rotates it upward, so that the baffle 20 limits the clamping plate 17.

[0034] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A voltage transformer with a shielding structure, comprising a protective shell (1), a support frame (101), a shielding shell (2), an iron core (3), a primary coil (4), a secondary coil (5) and an interface terminal (7), wherein the bottom of the protective shell (1) is fixedly connected to the support frame (101), the shielding shell (2) is arranged inside the protective shell (1), the iron core (3) is arranged inside the shielding shell (2), the primary coil (4) is arranged on the left side of the iron core (3), the secondary coil (5) is arranged on the right side of the iron core (3), and the interface terminal (7) is arranged on both the left and right sides of the shielding shell (2), wherein: It also includes a shielding component (6), and the surface of the iron core (3) is provided with the shielding component (6).

2. A voltage transformer with a shielding structure as claimed in claim 1, characterized in that: It also includes a protective shell (8), a first connecting frame (9), a first mounting frame (901) and a DC fan (10); a plurality of protective shells (8) are arranged on the top of the protective shell (1); the first connecting frame (9) is fixedly connected inside the protective shell (8); the first mounting frame (901) is mounted on the first connecting frame (9); and the DC fan (10) for heat dissipation is mounted on the first mounting frame (901).

3. A voltage transformer with a shielding structure as claimed in claim 1, characterized in that: It also includes a first clamping plate (11), a second clamping plate (12) and a mounting bolt (13); the first clamping plate (11) is arranged on the interface end (7); the second clamping plate (12) is arranged on the interface end (7); a plurality of first mounting holes (1301) are opened on the first clamping plate (11); a plurality of second mounting holes (1302) are arranged on the second clamping plate (12); the first mounting holes (1301) and the second mounting holes (1302) are both threadedly provided with mounting bolts (13).

4. A voltage transformer with a shielding structure as claimed in claim 1, characterized in that: The protective shell (1) further comprises a hinge (14), a rotating plate (15), a second connecting frame (16), a clamping plate (17), a rotating shaft (18), a second mounting frame (19) and a baffle (20); two hinges (14) are mounted on the protective shell (1); the two hinges (14) are rotatably provided with a rotating plate (15); the rotating plate (15) is fixedly connected with the second connecting frame (16); the clamping plate (17) is fixedly connected with the second connecting frame (16); a rotating shaft (18) is arranged on the front side of the protective shell (1); the second mounting frame (19) is mounted on the front side of the protective shell (1); and the baffle (20) is rotatably provided on the rotating shaft (18).

5. A voltage transformer with a shielding structure as claimed in claim 4, characterized in that: The protective shell (1) further comprises a slide block (23), a connecting chain (24) and a mounting seat (25); a slide groove (22) is provided on the protective shell (1); a slide block (23) is slidably arranged in the slide groove (22); a connecting chain (24) is arranged on the slide block (23); a mounting seat (25) is fixedly connected to the mounting frame; and the connecting chain (24) is connected to the mounting seat (25).

6. A voltage transformer with a shielding structure as claimed in claim 1, characterized in that: It also includes a dustproof tube (21), and a plurality of dustproof tubes (21) are arranged at the bottom of the protective shell (1).

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