Small-size voltage transformer

Abstract

The utility model relates to the technical field of voltage transformers, and discloses a small-size voltage transformer which comprises a voltage transformer body, a base is fixedly installed on the lower surface of the voltage transformer body, an iron core is fixedly installed on the inner surface of the voltage transformer body, and a primary winding shield is arranged on the outer surface of the iron core. According to the utility model, the structures of the voltage transformer body, the base, the iron core, the primary winding shield, the primary winding assembly, the primary wiring terminal, the secondary winding assembly, the high-voltage wire, the epoxy pouring insulator, the antifouling umbrella skirt, the first interrupter, the second interrupter, the explosion-proof shell, the explosion-proof end and the like are matched with one another; according to the voltage transformer, a primary wiring terminal and a high-voltage wire on the voltage transformer can be effectively insulated and protected, meanwhile, the primary wiring terminal and the high-voltage wire can be detected in real time, and after current exceeds a specified value, the two circuits can be disconnected through the interrupter, so that the circuit is prevented from being burnt and damaged, and internal elements of the voltage transformer are prevented from being influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of voltage transformers, in particular to a small-volume voltage transformer. Background Art

[0002] A voltage transformer is a device for measuring voltage and electric energy in a power system or electrical control system. It is mainly used 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 small-volume voltage transformer devices, refer to patent number: CN201946420U, explosion-proof voltage transformer. This voltage transformer has an additional explosion-proof casing so that when an abnormality occurs in the system, the transformer will not explode, thereby preventing serious damage to the equipment and ensuring that work continues.

[0004] However, when the above voltage transformers are actually used, the primary terminals and high-voltage wires protruding outside the voltage transformers do not have certain insulation protection, and the primary terminals and high-voltage wires do not have the function of automatically disconnecting the circuit. Therefore, when the current exceeds the specified value, the circuit cannot be disconnected in time, which will cause serious damage to the internal part of the voltage transformer and affect subsequent maintenance and use.

[0005] For this purpose, we propose a small-volume voltage transformer. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] In view of the deficiencies of the prior art, the utility model provides a small-volume voltage transformer, which overcomes the deficiencies of the prior art and solves the problem in the background technology that, when the above voltage transformer is actually used, the primary wiring terminals and high-voltage wires protruding outside the voltage transformer do not have certain insulation protection, and the primary wiring terminals and high-voltage wires do not have the function of automatically disconnecting the circuit. Therefore, when the current exceeds the specified value, the circuit cannot be disconnected in time, which will cause serious damage to the inside of the voltage transformer and affect subsequent maintenance and use.

[0008] (II) Technical solution

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a small-volume voltage transformer, comprising a voltage transformer body, a base fixedly installed on the lower surface of the voltage transformer body, an iron core fixedly installed on the inner surface of the voltage transformer, a primary winding shield arranged on the outer surface of the iron core, a primary winding assembly arranged on the outer surface of the iron core, a primary terminal arranged on the outer surface of the primary winding assembly, a secondary winding assembly arranged on the outer surface of the iron core, a high-voltage wire arranged on the outer surface of the secondary winding assembly, epoxy cast insulation fixedly installed on the left and right sides of the upper surface of the voltage transformer body, an anti-fouling umbrella skirt fixedly installed on the outer surface of the epoxy cast insulation, a first blocker fixedly installed on the outer surface of the primary terminal, a second blocker fixedly installed on the outer surface of the high-voltage wire, an explosion-proof shell fixedly provided on the outer surface of the voltage transformer body, and explosion-proof terminals fixedly installed on the left and right sides of the explosion-proof shell.

[0010] Preferably, a plurality of notches are provided on the upper surface of the base, an aluminum sheet is fixedly connected to the inner surface of the notches, and a mounting groove is provided on the upper surface of the aluminum sheet.

[0011] Preferably, the primary terminal and the high-voltage wire are respectively arranged corresponding to the epoxy cast insulation on the corresponding side, and the secondary winding assembly is arranged on the inner side of the primary winding assembly.

[0012] Preferably, the first blocker and the second blocker are arranged correspondingly to the epoxy cast insulation on the corresponding side, and the explosion-proof terminal is arranged correspondingly and in close contact with the two sides of the voltage transformer body.

[0013] Preferably, the primary winding shield, the primary winding assembly, the primary terminal, the secondary winding assembly, the high-voltage wire and the iron core are electrically connected to each other accordingly.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a small-volume voltage transformer with the following features:

[0016] Beneficial effects:

[0017] 1. The small-volume voltage transformer can effectively insulate and protect the primary terminal and high-voltage wire on the voltage transformer through the coordination of the voltage transformer body, base, iron core, primary winding shield, primary winding assembly, primary terminal, secondary winding assembly, high-voltage wire, epoxy casting insulation, anti-fouling umbrella skirt, first blocker, second blocker, explosion-proof housing, explosion-proof terminal and other structures. At the same time, it can also detect them in real time. When the current exceeds the specified value, the two circuits can be disconnected by the blocker to avoid the circuit from burning and being damaged, thereby affecting the internal components of the voltage transformer.

[0018] 2. The small-volume voltage transformer can be installed in different ways through the base through the cooperation between the notch, aluminum sheet, installation groove and other structures. According to the needs, the installation position can be contacted by the aluminum sheet and installed by welding. The base can be installed and fixed by external screws in conjunction with the installation groove, thereby expanding the installation range of the base and improving the installation stability of the voltage transformer. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 2 It is a three-dimensional structural diagram of the interior of the voltage transformer body and its related structures of the utility model;

[0021] Figure 3 It is a three-dimensional structural diagram of the interior of epoxy cast insulation and its related structures of the utility model;

[0022] Figure 4 It is a three-dimensional structural schematic diagram of the interior of the notch and its related structures of the utility model.

[0023] In the figure: 1. Voltage transformer body; 2. Base; 3. Iron core; 4. Primary winding shield; 5. Primary winding assembly; 6. Primary terminal; 7. Secondary winding assembly; 8. High-voltage wire; 9. Epoxy casting insulation; 10. Anti-fouling umbrella skirt; 11. First blocker; 12. Second blocker; 13. Explosion-proof casing; 14. Explosion-proof terminal; 15. Notch; 16. Aluminum sheet; 17. Installation groove. DETAILED DESCRIPTION

[0024] 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.

[0025] Embodiment 1

[0026] See also Figure 1-Figure 3A small-volume voltage transformer comprises a voltage transformer body 1, a base 2 is fixedly installed on the lower surface of the voltage transformer body 1, an iron core 3 is fixedly installed on the inner surface of the voltage transformer, a primary winding shield 4 is arranged on the outer surface of the iron core 3, a primary winding assembly 5 is arranged on the outer surface of the iron core 3, a primary wiring terminal 6 is arranged on the outer surface of the primary winding assembly 5, a secondary winding assembly 7 is arranged on the outer surface of the iron core 3, a high-voltage wire 8 is arranged on the outer surface of the secondary winding assembly 7, epoxy casting insulation 9 is fixedly installed on the left and right sides of the upper surface of the voltage transformer body 1, an anti-fouling umbrella skirt 10 is fixedly installed on the outer surface of the epoxy casting insulation 9, a first blocker 11 is fixedly installed on the outer surface of the primary wiring terminal 6, a second blocker 12 is fixedly installed on the outer surface of the high-voltage wire 8, an explosion-proof shell 13 is fixedly provided on the outer surface of the voltage transformer body 1, and explosion-proof terminals 14 are fixedly installed on the left and right sides of the explosion-proof shell 13.

[0027] Specifically, through the coordination among structures such as the voltage transformer body 1, the base 2, the core 3, the primary winding shield 4, the primary winding assembly 5, the primary terminal 6, the secondary winding assembly 7, the high-voltage wire 8, the epoxy cast insulation 9, the anti-fouling umbrella skirt 10, the first blocker 11, the second blocker 12, the explosion-proof casing 13, and the explosion-proof terminal 14, the primary terminal 6 and the high-voltage wire 8 on the voltage transformer can be effectively insulated and protected. At the same time, they can also be detected in real time. When the current exceeds the specified value, the two circuits can be disconnected by the blocker to avoid the circuit from burning and being damaged, thereby affecting the internal components of the voltage transformer.

[0028] In this embodiment, the primary terminal 6 and the high-voltage conductor 8 are respectively arranged corresponding to the epoxy cast insulation 9 on the corresponding side, and the secondary winding assembly 7 is arranged on the inner side of the primary winding assembly 5 .

[0029] Specifically, epoxy casting insulation 9 can be used to effectively insulate it.

[0030] In this embodiment: the first blocker 11 and the second blocker 12 are arranged correspondingly to the epoxy cast insulation 9 on the corresponding side, the explosion-proof terminal 14 is arranged correspondingly to the two sides of the voltage transformer body 1, and the primary winding shield 4, the primary winding assembly 5, the primary terminal 6, the secondary winding assembly 7, the high-voltage wire 8 and the iron core 3 are arranged in corresponding electrical connection.

[0031] Specifically, the first blocker 11 and the second blocker 12 cooperate to protect the circuit.

[0032] Working principle: For a small-volume voltage transformer, current can flow through the outer primary terminal 6 of the voltage transformer, through the primary winding assembly 5, in conjunction with the secondary winding assembly 7, and the primary winding shield 4, in conjunction with the iron core 3 to ensure the stability of the current flow and transformation, and then be transmitted through the high-voltage wire 8. The primary winding assembly 5 and the high-voltage wire 8 are insulated and protected by epoxy casting insulation 9, and are protected on the outside by the anti-fouling umbrella skirt 10. When the current abnormality is sensed, the first blocker 11 and the second blocker 12 disconnect the circuit for protection. The explosion-proof housing 13 and the explosion-proof terminal 14 cooperate to provide secondary protection for the voltage transformer body 1.

[0033] Embodiment 2

[0034] See also Figure 1 , Figure 4 Based on the first embodiment, the present invention provides a technical solution:

[0035] In this embodiment, a plurality of notches 15 are formed on the upper surface of the base 2 , an aluminum sheet 16 is fixedly connected to the inner surface of the notch 15 , and a mounting groove 17 is formed on the upper surface of the aluminum sheet 16 .

[0036] Specifically, through the coordination between the notch 15, the aluminum sheet 16, the mounting groove 17 and other structures, the voltage transformer can be installed in different ways through the base 2. According to the needs, the installation position can be contacted by the aluminum sheet 16 and installed by welding. The base 2 can be installed and fixed by external screws in conjunction with the mounting groove 17, thereby expanding the installation range of the base 2 and improving the installation stability of the voltage transformer.

[0037] Working principle: When the voltage transformer body 1 is used, it is placed in a designated position through the base 2. It can be welded and installed in conjunction with the aluminum sheet 16 as required, and can be fixed and installed by external screws in conjunction with the mounting groove 17 of the aluminum sheet 16 in the notch 15.

[0038] Although 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 small-volume voltage transformer, comprising a voltage transformer body (1), characterized in that: A base (2) is fixedly mounted on the lower surface of the voltage transformer body (1); an iron core (3) is fixedly mounted on the inner surface of the voltage transformer; a primary winding shield (4) is arranged on the outer surface of the iron core (3); a primary winding assembly (5) is arranged on the outer surface of the iron core (3); a primary wiring terminal (6) is arranged on the outer surface of the primary winding assembly (5); a secondary winding assembly (7) is arranged on the outer surface of the iron core (3); a high-voltage conductor (8) is arranged on the outer surface of the secondary winding assembly (7); Epoxy cast insulation (9) is fixedly mounted on both left and right sides of the upper surface of the transformer body (1); an anti-fouling umbrella skirt (10) is fixedly mounted on the outer surface of the epoxy cast insulation (9); a first blocker (11) is fixedly mounted on the outer surface of the primary wiring terminal (6); a second blocker (12) is fixedly mounted on the outer surface of the high-voltage conductor (8); an explosion-proof housing (13) is fixedly mounted on the outer surface of the voltage transformer body (1); and explosion-proof terminals (14) are fixedly mounted on both left and right sides of the explosion-proof housing (13).

2. A small-volume voltage transformer according to claim 1, characterized in that: The upper surface of the base (2) is provided with a plurality of notches (15), the inner surface of the notches (15) is fixedly connected with an aluminum sheet (16), and the upper surface of the aluminum sheet (16) is provided with a mounting groove (17).

3. A small-volume voltage transformer according to claim 1, characterized in that: The primary wiring terminal (6) and the high-voltage wire (8) are respectively arranged corresponding to the epoxy cast insulation (9) on the corresponding side, and the secondary winding assembly (7) is arranged on the inner side of the primary winding assembly (5).

4. A small-volume voltage transformer according to claim 1, characterized in that: The first blocker (11) and the second blocker (12) are arranged correspondingly to the epoxy cast insulation (9) on the corresponding side, and the explosion-proof terminal (14) is arranged correspondingly to the two sides of the voltage transformer body (1) in a fitted manner.

5. A small-volume voltage transformer according to claim 1, characterized in that: The primary winding shield (4), the primary winding assembly (5), the primary wiring terminal (6), the secondary winding assembly (7), the high-voltage wire (8) and the iron core (3) are electrically connected to each other in a corresponding manner.

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