Touchable voltage transformer

Abstract

The utility model provides a touchable voltage transformer, which belongs to the technical field of voltage transformers, mainly aims at solving the problem that a traditional voltage transformer is easily affected by moisture, and adopts the technical scheme that the touchable voltage transformer comprises a grounding plate, an iron core is arranged above the grounding plate, a coil is sleeved on the iron core, and epoxy resin is wrapped outside the iron core and the coil. The epoxy resin is fixedly connected to the top of the grounding plate, the bottom of the grounding plate is connected with a mounting bottom plate through a connecting assembly, a moisture-proof assembly is further arranged above the grounding plate and comprises a drying agent box, and the drying agent box is arranged on one side of the iron core; through the arrangement of the moisture-proof assembly, multiple moisture-proof protection can be formed through a drying agent box, epoxy resin and a moisture-proof coating coated on the grounding shell, the problems that the iron core rusts and the coil is affected with damp are avoided, it is ensured that the mutual inductor can still stably operate in a humid environment, and therefore the measurement precision is improved, and the service life is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of voltage transformers, and more specifically, relates to a touchable voltage transformer. Background Art

[0002] Voltage transformers in power systems are used to detect voltage and are widely used in important power locations such as substations and power plants. Their main function is to safely and reliably convert high-voltage side voltage signals into low-voltage side voltage signals, providing voltage input for the measurement, protection, and control of power equipment.

[0003] For example, the Chinese utility model patent with patent number 202022514282.0 provides a touchable voltage transformer, which is equipped with a metal casing, a fuse and an insulating plug. When in use, a metal casing is set on the outside of the transformer for grounding, and a fuse is detachably connected to the primary high-voltage end of the transformer through an insulating plug, so that the switch cabinet does not need to install an additional fuse, reducing costs; however, the iron core and coil of the traditional transformer are easily affected by moisture, causing the iron core to rust and the coil to become damp, which affects the accuracy of the transformer and shortens its service life. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a touchable voltage transformer to solve the technical problem in the prior art that the iron core and coil of the traditional transformer are easily affected by moisture, causing the iron core to rust and the coil to become damp, which affects the accuracy of the transformer and shortens its service life.

[0005] The purpose and effect of the touchable voltage transformer of the utility model are achieved by the following specific technical means:

[0006] A touchable voltage transformer includes a grounding plate, an iron core is provided above the grounding plate, a coil is sleeved on the iron core, the iron core and the outer side of the coil are wrapped with epoxy resin, the epoxy resin is fixedly connected to the top of the grounding plate, the bottom of the grounding plate is connected to the mounting base via a connecting assembly, a moisture-proof assembly is also provided above the grounding plate, the moisture-proof assembly includes a desiccant box, and the desiccant box is provided on one side of the iron core.

[0007] In a preferred embodiment, the moisture-proof component also includes a moisture-proof coating, a grounding shell is provided on the outside of the epoxy resin, the bottom of the grounding shell is connected to the grounding plate, both ends of the grounding shell are arc surfaces, and the outside of the grounding shell is coated with the moisture-proof coating.

[0008] In a preferred embodiment, a slot communicating with the iron core is provided on one side of the epoxy resin, one end of the desiccant box is inserted into the slot, a fixing column is provided at the bottom of the desiccant box, a fixing hole is further provided on one side of the epoxy resin corresponding to the fixing column, and the fixing column is inserted into the fixing hole.

[0009] In a preferred embodiment, a waterproof joint is provided at one end of the grounding shell, and a waterproof junction box is provided at the other end. A secondary lead is provided on one side of the waterproof junction box, and a waterproof breathable valve is provided on the top of the waterproof junction box.

[0010] In a preferred embodiment, a protrusion for easy taking out is provided at one end of the desiccant box.

[0011] In a preferred embodiment, the connecting assembly includes two groups of connecting seats, and the two groups of connecting seats are provided on the top of the mounting base plate. The two groups of connecting seats are respectively connected with two groups of rotatable fixing buckles through two groups of axle pins.

[0012] In a preferred embodiment, grooves are provided on both sides of the grounding plate, and the two sets of fixed

[0013] The buckle top ends are detachably clamped in the two groups of grooves, and fixing seats are provided on both sides of the installation base plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. Through the setting of moisture-proof components, when using the transformer, a desiccant box is set inside the transformer, epoxy resin is wrapped on the outside of the iron core and coil, and a moisture-proof coating is applied to the grounded shell, forming a multiple moisture-proof protection mechanism. This effectively avoids the problems of rusting of the iron core and moisture of the coil, ensuring that the transformer can still operate stably in a humid environment; solves the problem that traditional transformers are easily affected by moisture, improves the moisture-proof performance of the equipment, thereby improving measurement accuracy and extending the service life of the equipment.

[0016] 2. Through the setting of the connection component, when installing the transformer, first install the mounting base plate at the required position, and then use the rotatable fixing buckle on the connecting seat to buckle it into the groove on the grounding plate to fix the grounding plate to the mounting base plate, making the installation and disassembly of the transformer extremely convenient; it not only improves the installation efficiency, reduces the installation time and labor costs, but also when the transformer needs to be maintained or replaced, it can be quickly removed from the mounting base plate, greatly shortening the maintenance time and improving the operation stability of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is a schematic structural diagram of a touchable voltage transformer according to the present utility model;

[0018] Figure 2 This is an exploded diagram of a touchable voltage transformer of the utility model;

[0019] Figure 3 This is a schematic structural diagram of the assembled moisture-proof component and the connecting component in a touchable voltage transformer of the utility model;

[0020] Figure 4 for Figure 3 Schematic diagram of the structure after decomposition.

[0021] In the figure, the corresponding relationship between the component names and the drawing numbers is as follows:

[0022] 11. Grounding plate; 12. Iron core; 13. Coil; 14. Epoxy resin; 15. Mounting base; 16. Grounding shell; 17. Waterproof connector; 18. Waterproof junction box; 19. Secondary lead; 20. Waterproof vent valve; 21. Desiccant box; 22. Moisture-proof coating; 23. Slot; 24. Fixing column; 25. Fixing hole; 26. Protrusion; 31. Connecting seat; 32. Fixing buckle; 33. Fixing seat. DETAILED DESCRIPTION

[0023] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] Example:

[0025] As attached Figure 1 To the attached Figure 4 As shown:

[0026] The utility model provides a touchable voltage transformer, including a grounding plate 11, an iron core 12 is arranged above the grounding plate 11, a coil 13 is sleeved on the iron core 12, the iron core 12 and the coil 13 are wrapped with epoxy resin 14 on the outside, and the epoxy resin 14 is fixedly connected to the top of the grounding plate 11. The structure of wrapping the iron core 12 and the coil 13 with epoxy resin 14 not only improves the overall insulation performance and reduces the risk of electric shock, but also effectively isolates live parts and enhances safety; in addition, a moisture-proof component is also provided above the grounding plate 11, and the moisture-proof component includes a desiccant box 21, which is placed on one side of the iron core 12 and can effectively absorb internal moisture to prevent the iron core 12 from rusting and the coil 13 from getting damp, thereby ensuring long-term stable operation of the transformer and significantly extending its service life; the bottom of the grounding plate 11 is connected to the mounting base plate 15 through a connecting component, which realizes quick installation and maintenance and greatly improves the convenience of use.

[0027] Please refer to Figure 1 and Figure 2 As shown, the moisture-proof component also includes a moisture-proof coating 22, a grounding shell 16 is provided on the outside of the epoxy resin 14, the bottom of the grounding shell 16 is connected to the grounding plate 11, both ends of the grounding shell 16 are arc surfaces, and the outside of the grounding shell 16 is coated with a moisture-proof coating 22; not only is a desiccant box 21 provided inside, the iron core 12 and the coil 13 are also wrapped with epoxy resin 14, and the outside of the grounding shell 16 is coated with a moisture-proof coating 22. This multiple moisture-proof protection structure effectively blocks the influence of the external humid environment on the core components; the desiccant box 21 can continuously absorb water vapor in the internal space, while the epoxy resin 14 and the moisture-proof coating 22 form a solid insulation barrier, which not only isolates the live parts but also prevents moisture from penetrating, ensuring that the iron core 12 will not rust and the coil 13 will not be damp, thereby ensuring that the mutual inductor can still maintain high precision and long-term stable operation in a humid environment; effectively solves the problem that traditional mutual inductors are easily affected by moisture and have a decrease in accuracy, thereby extending the service life of the equipment.

[0028] Please refer to Figure 3 and Figure 4 As shown, a slot 23 communicating with the iron core 12 is provided on one side of the epoxy resin 14, and one end of the desiccant box 21 is inserted into this slot 23 so that it can be closely attached to the core area where the iron core 12 is located; a fixing column 24 is also provided at the bottom of the desiccant box 21, which cooperates with the fixing hole 25 correspondingly provided on one side of the epoxy resin 14 to play a reliable fixing role; at the same time, a protrusion 26 is also provided on one end of the desiccant box 21 to facilitate the operator to remove and replace it; this not only ensures that the desiccant box 21 can be firmly installed in the most critical position to absorb moisture around the iron core 12, but also can be easily replaced when necessary, thereby improving the convenience of use and maintenance efficiency of the mutual inductor.

[0029] Please refer to Figure 2 and Figure 4 As shown, a waterproof connector 17 is provided at one end of the grounding shell 16, and a waterproof junction box 18 is provided at the other end. This waterproof junction box 18 can not only reliably connect the secondary lead 19, but also has a waterproof breathable valve 20 on the top. The provision of the waterproof connector 17 and the waterproof junction box 18 ensures the sealing of the entire grounding structure and effectively blocks the intrusion of moisture. At the same time, the provision of the waterproof breathable valve 20 can balance the air pressure inside the box and avoid water leakage caused by temperature changes. This ensures the overall waterproof performance of the transformer and greatly improves its service life and reliability in harsh environments.

[0030] Please refer to Figure 4As shown, the connecting assembly includes two groups of connecting seats 31. Two groups of connecting seats 31 are set on the top of the mounting base 15, which are connected to two groups of rotatable fixing buckles 32 through two groups of axle pins. The top ends of the two groups of fixing buckles 32 can be respectively inserted into the grooves opened on both sides of the grounding plate 11 to achieve detachable fixation; at the same time, fixing seats 33 are also provided on both sides of the mounting base 15, which further enhances the stability of the entire connecting assembly. This connection method using rotatable fixing buckles 32 not only facilitates installation and debugging, but also can be quickly realized when disassembly is required, greatly improving work efficiency.

[0031] When installing the transformer, first, the mounting base plate 15 needs to be fixed at a predetermined installation position, and then, the rotatable fixing buckle 32 on the mounting base plate 15 is used to buckle it into the groove reserved on the grounding plate 11, so as to easily achieve the connection and fixation between the two; this connection method using the rotatable fixing buckle 32 not only greatly improves the installation efficiency and reduces the installation time and labor cost, but also when the transformer needs to be maintained or replaced, it can be quickly removed from the mounting base plate 15, greatly shortening the maintenance time; this not only improves work efficiency, but more importantly, ensures the long-term stable operation of the power system.

[0032] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. A touchable voltage transformer, comprising a ground plate (11), characterized in that: An iron core (12) is provided above the grounding plate (11), a coil (13) is sleeved on the iron core (12), the iron core (12) and the coil (13) are wrapped with epoxy resin (14) on the outside, the epoxy resin (14) is fixedly connected to the top of the grounding plate (11), the bottom of the grounding plate (11) is connected to a mounting base plate (15) through a connecting component, and a moisture-proof component is also provided above the grounding plate (11), the moisture-proof component includes a desiccant box (21), and the desiccant box (21) is provided on one side of the iron core (12).

2. A touchable voltage transformer according to claim 1, characterized in that: The moisture-proof component also includes a moisture-proof coating (22). A grounding shell (16) is provided on the outside of the epoxy resin (14). The bottom of the grounding shell (16) is connected to the grounding plate (11). Both ends of the grounding shell (16) are arc surfaces. The outside of the grounding shell (16) is coated with the moisture-proof coating (22).

3. A touchable voltage transformer according to claim 2, characterized in that: A slot (23) communicating with the iron core (12) is provided on one side of the epoxy resin (14); one end of the desiccant box (21) is inserted into the slot (23); a fixing column (24) is provided at the bottom of the desiccant box (21); a fixing hole (25) is also provided on one side of the epoxy resin (14) corresponding to the fixing column (24); and the fixing column (24) is inserted into the fixing hole (25).

4. A touchable voltage transformer according to claim 2, characterized in that: One end of the grounding shell (16) is provided with a waterproof joint (17), and the other end is provided with a waterproof junction box (18). A secondary lead (19) is provided on one side of the waterproof junction box (18), and a waterproof breathable valve (20) is provided on the top of the waterproof junction box (18).

5. The touchable voltage transformer according to claim 1, characterized in that: One end of the desiccant box (21) is provided with a protrusion (26) for easy taking.

6. The touchable voltage transformer according to claim 1, characterized in that: The connecting assembly includes two groups of connecting seats (31), and the top of the mounting base (15) is provided with two groups of connecting seats (31). The two groups of connecting seats (31) are respectively connected with two groups of rotatable fixing buckles (32) through two groups of shaft pins.

7. The touchable voltage transformer according to claim 6, characterized in that: Grooves are provided on both sides of the grounding plate (11), and the top ends of the two groups of fixing buckles (32) are detachably clamped in the two groups of grooves, and fixing seats (33) are provided on both sides of the mounting base plate (15).

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