Explosion-proof voltage transformer

Abstract

The utility model discloses an explosion-proof voltage transformer, relates to the technical field of voltage transformers, and aims to solve the problems that the outside of an insulating tube of the conventional voltage transformer is not protected, the insulating tube is easily damaged by external force, the phenomena of faults and pits are avoided, explosion is easily caused, and the explosion-proof performance is poor. A secondary winding main body is arranged at the upper end of the iron core main body, an upper top plate is arranged at the upper end of the secondary winding main body, and a high-voltage insulating sleeve is arranged at the upper end of the upper top plate; the protective sleeve is arranged outside the high-voltage insulating sleeve, the outer wall of the protective sleeve is provided with vent holes, the vent holes and the protective sleeve are of an integrated structure, the number of the vent holes is multiple, the protective sleeve is internally provided with a cavity, and the cavity and the protective sleeve are of an integrated structure; and the wiring board is arranged at the lower end of the iron core main body, and wiring terminals are arranged on the two sides of the wiring board and the top end of the high-voltage insulating sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of voltage transformers, in particular to an explosion-proof voltage transformer. Background Art

[0002] Voltage transformers are similar to transformers and are instruments used to transform voltage. The purpose of voltage transformers to transform voltage is mainly to supply power to measuring instruments and relay protection devices, to measure the voltage, power and electric energy of the line, or to protect valuable equipment, motors and transformers in the line when a line fault occurs;

[0003] For example, the Chinese authorized patent with announcement number CN219246471U (encapsulation shell of voltage transformer and voltage transformer thereof): comprises a voltage transformer body; a third mounting plate is fixedly installed at the bottom of the voltage transformer body, and the third mounting plate is provided with a plurality of groups of third mounting holes, and the plurality of groups of third mounting holes are arranged in a circular array along the central axis of the third mounting plate, and a second fixing bolt is fixedly installed on the side of the third mounting hole away from the voltage transformer body, and the second fixing bolt coincides with the central axis of the third mounting hole, a group of limit blocks are fixedly installed on both sides of the voltage transformer body, and a group of second fixing nuts are installed on one side of the two groups of limit blocks. This embodiment not only improves the stability of the device during long-distance transportation, but also improves the service life of the device by reducing the damage to the voltage transformer body caused by vibration.

[0004] However, the insulating tube of the existing voltage transformer lacks protection on the outside and is easily damaged by external forces, which prevents faults and pits from occurring and easily causes explosions, resulting in poor explosion-proof performance. Therefore, it does not meet existing needs. We have proposed an explosion-proof voltage transformer. Utility Model Content

[0005] The purpose of the utility model is to provide an explosion-proof voltage transformer to solve the problem that the insulation tube of the existing voltage transformer proposed in the above background technology lacks protection on the outside, is easily damaged by external forces, avoids faults and pits, is prone to explosion, and has poor explosion-proof performance.

[0006] To achieve the above object, the utility model provides the following technical solution: an explosion-proof voltage transformer, comprising: an iron core body, a secondary winding body is arranged at the upper end of the iron core body, an upper top plate is arranged at the upper end of the secondary winding body, and a high-voltage insulating bushing is arranged at the upper end of the upper top plate;

[0007] Also includes:

[0008] A protective sleeve, which is arranged outside the high-voltage insulating bushing, the outer wall of the protective sleeve is provided with air holes, and the air holes and the protective sleeve are an integrated structure, the air holes are provided in a plurality of numbers, and the interior of the protective sleeve is provided with a cavity, and the cavity and the protective sleeve are an integrated structure;

[0009] A wiring board is arranged at the lower end of the core body, and wiring terminals are arranged on both sides of the wiring board and the top end of the high-voltage insulating sleeve.

[0010] Preferably, a threaded connection ring is provided on the lower surface of the protective sleeve, and the threaded connection ring is hot-melt connected to the protective sleeve, and a threaded connection groove is provided on the upper surface of the upper top plate, and the threaded connection ring is threadedly connected to the threaded connection groove.

[0011] Preferably, a wiring opening is provided on the rear surface of the protective sleeve, and the wiring opening and the protective sleeve are an integral structure.

[0012] Preferably, the front and rear ends of the wiring board are both provided with mounting plates, and there are two mounting plates, and the mounting plates are L-shaped.

[0013] Preferably, an adjustment mounting groove is provided on one side surface of the mounting plate, and the adjustment mounting groove passes through the mounting plate, a fixing bolt is provided at the front end of the adjustment mounting groove, and one end of the fixing bolt passes through the adjustment mounting groove and is threadedly connected to the terminal block.

[0014] Preferably, both ends of the other side of the mounting plate are provided with fixing holes, and the fixing holes penetrate the mounting plate, and there are four fixing holes.

[0015] Preferably, the interior of the threaded connection ring is hollow, and the interior of the threaded connection ring is communicated with the cavity.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The utility model provides a protective sleeve on the outside of the high-voltage insulating sleeve, and the protective sleeve is sleeved on the outside of the high-voltage insulating sleeve. The high-voltage insulating sleeve is located inside the cavity and does not contact the inner wall of the cavity, so that the protective sleeve protects the high-voltage insulating sleeve, avoids the high-voltage insulating sleeve from being damaged by external force and causing faults and pits, prevents explosion, plays an explosion-proof effect, and improves safety. After the protective sleeve is sleeved on the outside of the high-voltage insulating sleeve, the protective sleeve is threadedly connected to the threaded connecting groove by a threaded connecting ring to fix the protective sleeve to the upper top plate, so that it is easy to disassemble and repair the high-voltage insulating sleeve, and the flexibility is improved. The surface of the protective sleeve has a plurality of air holes, and ventilation is carried out through the air holes for heat dissipation operation. The utility model does not provide a wiring opening on the rear surface of the protective sleeve. When wiring with the wiring terminal at the upper end of the high-voltage insulating sleeve, the wire can pass through the wiring opening to avoid the protective sleeve affecting the wiring.

[0018] 2. By setting an adjustment mounting groove on one side surface of the mounting plate, and the adjustment mounting groove passes through the mounting plate, when installing the voltage transformer, one end of the fixing bolt passes through the adjustment mounting groove and is threadedly connected to the terminal board. The position of the mounting plate can be adjusted by adjusting the mounting groove. It is suitable for installing voltage transformers of different sizes and also suitable for installing voltage transformers in different positions, thereby improving flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the protective cover structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the upper surface structure of the upper top plate of the utility model;

[0022] Figure 4 This is a schematic diagram of the protective cover of the utility model when viewed from above;

[0023] Figure 5 This is a schematic diagram of the rear view structure of the protective cover of the utility model;

[0024] In the figure: 1. Core body; 2. Secondary winding body; 3. Upper top plate; 4. High-voltage insulating bushing; 5. Protective cover; 6. Air vent; 7. Terminal block; 8. Terminal block; 9. Mounting plate; 10. Fixing bolt; 11. Threaded connection ring; 12. Threaded connection groove; 13. Cavity; 14. Wiring opening; 15. Adjustment mounting groove; 16. Fixing hole. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] See also Figure 1-5 The utility model provides an embodiment: an explosion-proof voltage transformer, comprising: an iron core body 1, a secondary winding body 2 is arranged at the upper end of the iron core body 1, an upper top plate 3 is arranged at the upper end of the secondary winding body 2, and a high-voltage insulating bushing 4 is arranged at the upper end of the upper top plate 3;

[0027] Also includes:

[0028] A protective sleeve 5 is arranged outside the high-voltage insulating sleeve 4, and an air hole 6 is arranged on the outer wall of the protective sleeve 5, and the air hole 6 and the protective sleeve 5 are an integral structure, and a plurality of air holes 6 are arranged, and a cavity 13 is arranged inside the protective sleeve 5, and the cavity 13 and the protective sleeve 5 are an integral structure;

[0029] The terminal block 7 is arranged at the lower end of the core body 1 , and terminal blocks 8 are arranged on both sides of the terminal block 7 and the top end of the high-voltage insulating bushing 4 .

[0030] The protective sleeve 5 is put on the outside of the high-voltage insulating sleeve 4, and the high-voltage insulating sleeve 4 is located inside the cavity 13 and does not contact the inner wall of the cavity 13, so that the protective sleeve 5 can protect the high-voltage insulating sleeve 4 and avoid the high-voltage insulating sleeve 4 from being damaged by external force and causing faults and pits, thereby preventing explosion, achieving explosion-proof effect and improving safety. After the protective sleeve 5 is put on the outside of the high-voltage insulating sleeve 4, when connecting the wiring terminal 8 at the upper end of the high-voltage insulating sleeve 4, the wire can be passed through the wiring opening 14.

[0031] See also Figure 1 , 2 3. A threaded connection ring 11 is provided on the lower surface of the protective sleeve 5, and the threaded connection ring 11 is hot-melt connected to the protective sleeve 5. A threaded connection groove 12 is provided on the upper surface of the upper top plate 3, and the threaded connection ring 11 is threadedly connected to the threaded connection groove 12. After the protective sleeve 5 is put on the outside of the high-voltage insulating sleeve 4, the protective sleeve 5 is threadedly connected to the threaded connection groove 12 by using the threaded connection ring 11, so that the protective sleeve 5 is fixed to the upper top plate 3, so that it is convenient to disassemble the high-voltage insulating sleeve 4 for inspection and replacement, and the flexibility is improved.

[0032] See also Figure 5 A wiring opening 14 is provided on the rear surface of the protective sleeve 5, and the wiring opening 14 and the protective sleeve 5 are an integral structure. When wiring with the wiring terminal 8 at the upper end of the high-voltage insulating sleeve 4, the wire can be passed through the wiring opening 14 to avoid the protective sleeve 5 affecting the wiring.

[0033] See also Figure 1 The front and rear ends of the terminal block 7 are both provided with mounting plates 9, and two mounting plates 9 are provided. The mounting plates 9 are L-shaped, and the voltage transformer is fixed by the mounting plates 9.

[0034] See also Figure 1 A surface of one side of the mounting plate 9 is provided with an adjusting mounting groove 15, and the adjusting mounting groove 15 passes through the mounting plate 9, a fixing bolt 10 is provided at the front end of the adjusting mounting groove 15, and one end of the fixing bolt 10 passes through the adjusting mounting groove 15 and is threadedly connected to the terminal block 7. When installing the voltage transformer, one end of the fixing bolt 10 passes through the adjusting mounting groove 15 and is threadedly connected to the terminal block 7. The position of the mounting plate 9 is adjusted by adjusting the mounting groove 15, which is suitable for installing voltage transformers of different sizes, and is also suitable for installing voltage transformers in different positions, thereby improving flexibility.

[0035] See also Figure 1Both ends of the other side of the mounting plate 9 are provided with fixing holes 16 , and the fixing holes 16 penetrate the mounting plate 9 , and four fixing holes 16 are provided.

[0036] See also Figure 2 , 4 The interior of the threaded connection ring 11 is hollow, and the interior of the threaded connection ring 11 is interconnected with the cavity 13 , and the mounting plate 9 is fixed through the fixing holes 16 with external bolts.

[0037] Working principle: When in use, the protective sleeve 5 is put on the outside of the high-voltage insulating sleeve 4, and the high-voltage insulating sleeve 4 is located inside the cavity 13 and does not contact the inner wall of the cavity 13, so that the protective sleeve 5 can protect the high-voltage insulating sleeve 4, avoid the high-voltage insulating sleeve 4 from being damaged by external force and causing faults and pits, prevent explosions, play an explosion-proof effect, and improve safety. After the protective sleeve 5 is put on the outside of the high-voltage insulating sleeve 4, the protective sleeve 5 is threadedly connected with the threaded connection ring 11 and the threaded connection groove 12 to fix the protective sleeve 5 to the upper top plate 3, so that The high-voltage insulating bushing 4 can be disassembled for inspection and replacement, which improves flexibility. When connecting the wiring terminal 8 at the upper end of the high-voltage insulating bushing 4, the wire can be passed through the wiring opening 14. When installing the voltage transformer, one end of the fixing bolt 10 passes through the adjusting mounting groove 15 and is threadedly connected to the terminal board 7. The position of the mounting plate 9 is adjusted by adjusting the mounting groove 15. It is suitable for installing voltage transformers of different sizes and also for installing voltage transformers in different positions. The mounting plate 9 is fixed by external bolts through the fixing hole 16 to improve installation flexibility.

[0038] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An explosion-proof voltage transformer, comprising an iron core body (1), a secondary winding body (2) being arranged at the upper end of the iron core body (1), an upper top plate (3) being arranged at the upper end of the secondary winding body (2), and a high-voltage insulating bushing (4) being arranged at the upper end of the upper top plate (3); Features: Also includes: A protective sleeve (5) is arranged outside the high-voltage insulating bushing (4), the outer wall of the protective sleeve (5) is provided with a vent hole (6), and the vent hole (6) and the protective sleeve (5) are an integral structure, a plurality of vent holes (6) are provided, and the interior of the protective sleeve (5) is provided with a cavity (13), and the cavity (13) and the protective sleeve (5) are an integral structure; A wiring board (7) is arranged at the lower end of the core body (1), and wiring terminals (8) are arranged on both sides of the wiring board (7) and on the top of the high-voltage insulating sleeve (4).

2. An explosion-proof voltage transformer according to claim 1, characterized in that: The lower surface of the protective sleeve (5) is provided with a threaded connection ring (11), and the threaded connection ring (11) is hot-melt-connected to the protective sleeve (5); the upper surface of the upper top plate (3) is provided with a threaded connection groove (12), and the threaded connection ring (11) is threadedly connected to the threaded connection groove (12).

3. An explosion-proof voltage transformer according to claim 1, characterized in that: A wiring opening (14) is provided on the rear surface of the protective sleeve (5), and the wiring opening (14) and the protective sleeve (5) are an integral structure.

4. An explosion-proof voltage transformer according to claim 1, characterized in that: The front and rear ends of the wiring board (7) are both provided with mounting plates (9), and two mounting plates (9) are provided, and the mounting plates (9) are L-shaped.

5. An explosion-proof voltage transformer according to claim 4, characterized in that: An adjustment mounting groove (15) is provided on one side surface of the mounting plate (9), and the adjustment mounting groove (15) passes through the mounting plate (9); a fixing bolt (10) is provided at the front end of the adjustment mounting groove (15), and one end of the fixing bolt (10) passes through the adjustment mounting groove (15) and is threadedly connected to the terminal block (7).

6. An explosion-proof voltage transformer according to claim 5, characterized in that: Both ends of the other side of the mounting plate (9) are provided with fixing holes (16), and the fixing holes (16) penetrate the mounting plate (9), and four fixing holes (16) are provided.

7. An explosion-proof voltage transformer according to claim 2, characterized in that: The interior of the threaded connection ring (11) is hollow, and the interior of the threaded connection ring (11) is communicated with the cavity (13).

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