A shielded electronic current transformer

Abstract

This utility model relates to the field of current transformer technology and discloses a shielded electronic current transformer that solves the problem of poor shielding effect in existing electronic current transformers. It includes a shielded induction coil housing, an insulator, and a shielded electronic device mounting housing. The induction coil is installed inside the shielded induction coil housing. A busbar is installed through the center of the shielded induction coil housing, passing through the center of the induction coil. A grounding wire is installed at one end of the bottom of the shielded induction coil housing. A breakdown-resistant component is installed at the top of the shielded electronic device mounting housing. Both the shielded induction coil housing and the shielded electronic device mounting housing are composed of an aluminum alloy layer, an aluminum oxide insulating outer layer, a carbon nanofiber layer, an aluminum foil layer, a copper mesh layer, a nanocrystalline absorbing layer, and an epoxy resin curing layer. This electronic current transformer improves shielding performance.

Description

Technical Field

[0001] This utility model belongs to the field of current transformer technology, specifically a shielded electronic current transformer. Background Technology

[0002] With the development of smart grids, electronic current transformers have become an important alternative due to their advantages such as no magnetic saturation and wide bandwidth. However, the signal stability of electronic current transformers in strong electromagnetic interference environments remains a technical challenge. Improving the anti-interference shielding performance of electronic current transformers is a problem that needs to be solved. Therefore, this application proposes a shielded electronic current transformer. Utility Model Content

[0003] In view of the above situation and to overcome the shortcomings of the existing technology, this utility model provides a shielded electronic current transformer, which effectively solves the problem of poor shielding effect of existing electronic current transformers.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a shielded electronic current transformer, comprising a shielded induction coil housing, an insulator, and a shielded electronic device mounting housing. The shielded induction coil housing is fixedly connected to the top of the insulator, and the shielded electronic device mounting housing is fixedly connected to the bottom of the insulator. The induction coil is installed inside the shielded induction coil housing. A busbar is provided through the middle of the inside of the shielded induction coil housing, and the busbar passes through the center of the induction coil. A grounding wire is provided at one end of the bottom of the shielded induction coil housing, and a breakdown-resistant component is provided at the top of the shielded electronic device mounting housing. Both the shielded induction coil housing and the shielded electronic device mounting housing are composed of an aluminum alloy layer, an aluminum oxide insulating outer layer, a carbon nanofiber layer, an aluminum foil layer, a copper mesh layer, a nanocrystalline absorbing layer, and an epoxy resin curing layer. The aluminum oxide insulating outer layer is connected to the outer surface of the aluminum alloy layer, the carbon nanofiber layer is located on the inner surface of the aluminum alloy layer, the aluminum foil layer is located on the inner surface of the carbon nanofiber layer, the copper mesh layer is located on the inner surface of the aluminum foil layer, the nanocrystalline absorbing layer is located on the inner surface of the copper mesh layer, and the epoxy resin curing layer is located on the inner surface of the nanocrystalline absorbing layer. The aluminum foil layer and the copper mesh layer are connected to the grounding wire.

[0005] Preferably, the shielded induction coil housing is provided with annular ferrite one and annular ferrite two, respectively, which are sleeved on the busbar.

[0006] Preferably, a plurality of heat dissipation fins are fixedly provided on the outer surface of the shielded induction coil housing, and a plurality of heat dissipation fins are fixedly provided on the outer surface of the shielded electronic device mounting housing.

[0007] Preferably, the breakdown-resistant assembly consists of four insulating supports and a second grounding wire. The four insulating supports are fixedly connected to the four corners of the top of the shielded electronic device mounting housing, and the second grounding wire is connected to the top of the four insulating supports and grounded.

[0008] Preferably, the distance between the grounding ends of grounding wire one and grounding wire two is 10-20 meters.

[0009] Compared with the prior art, the beneficial effects of this utility model are: (1) In operation, by setting up a shielded induction coil shell and a shielded electronic device mounting shell composed of an aluminum alloy layer, an aluminum oxide insulating outer layer, a carbon nanofiber layer, an aluminum foil layer, a copper mesh layer, a nanocrystalline absorbing layer and an epoxy resin curing layer, the shielding performance can be improved, thereby improving the anti-electromagnetic interference performance and ensuring the working stability of the electronic current transformer. (2) By setting annular ferrite one and annular ferrite two, the shielding effect can be further improved. By setting heat dissipation fin one and heat dissipation fin two, heat dissipation can be assisted. By setting a breakdown-resistant assembly consisting of four insulating pillars and grounding wire two, breakdown protection can be achieved for the shielded electronic device mounting shell. Attached Figure Description

[0010] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0011] In the attached diagram: Figure 1 This is a schematic diagram of the shielded electronic current transformer of this utility model; Figure 2 This is a schematic diagram of the shielded induction coil outer shell structure of this utility model; Figure 3 This is a schematic diagram of the breakdown-resistant component structure of this utility model; In the diagram: 1. Shielded induction coil housing; 2. Insulator; 3. Shielded electronic device mounting housing; 4. Busbar; 5. Grounding wire one; 6. Breakdown withstand component; 7. Aluminum alloy layer; 8. Alumina insulating outer layer; 9. Carbon nanofiber layer; 10. Aluminum foil layer; 11. Copper mesh layer; 12. Nanocrystalline absorbing layer; 13. Epoxy resin cured layer; 14. Annular ferrite one; 15. Annular ferrite two; 16. Heat dissipation fin one; 17. Heat dissipation fin two; 18. Insulating support; 19. Grounding wire two. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0013] Depend on Figures 1 to 3 The present invention discloses a shielded electronic current transformer, comprising a shielded induction coil housing 1, an insulator 2, and a shielded electronic device mounting housing 3. The shielded induction coil housing 1 is fixedly connected to the top of the insulator 2, and the shielded electronic device mounting housing 3 is fixedly connected to the bottom of the insulator 2. The induction coil is mounted inside the shielded induction coil housing 1. A busbar 4 is provided through the middle of the inside of the shielded induction coil housing 1, and the busbar 4 passes through the center of the induction coil. A grounding wire 5 is provided at one end of the bottom of the shielded induction coil housing 1, and a breakdown-resistant component 6 is provided at the top of the shielded electronic device mounting housing 3. The shielded induction coil housing 1 and the shielded electronic device mounting housing 3 can provide shielding to prevent the induction coil and electronic devices from being subjected to external electromagnetic interference. The busbar 4 can be connected to the high-voltage cable to form a circuit. The breakdown-resistant component 6 can provide breakdown protection for the shielded electronic device mounting housing 3. Both the shielded induction coil housing 1 and the shielded electronic device mounting housing 3 are composed of an aluminum alloy layer 7, an aluminum oxide insulating outer layer 8, a carbon nanofiber layer 9, an aluminum foil layer 10, a copper mesh layer 11, a nanocrystalline absorbing layer 12, and an epoxy resin curing layer 13. The aluminum oxide insulating outer layer 8 is connected to the outer surface of the aluminum alloy layer 7, the carbon nanofiber layer 9 is located on the inner surface of the aluminum alloy layer 7, the aluminum foil layer 10 is located on the inner surface of the carbon nanofiber layer 9, the copper mesh layer 11 is located on the inner surface of the aluminum foil layer 10, the nanocrystalline absorbing layer 12 is located on the inner surface of the copper mesh layer 11, and the epoxy resin curing layer 13 is located on the inner surface of the nanocrystalline absorbing layer 12. The aluminum foil layer 10 and the copper mesh layer 11 are connected to the grounding wire 5. The aluminum foil layer 10 and the copper mesh layer 11 provide shielding, the carbon nanofiber layer 9 and the nanocrystalline absorbing layer 12 provide wave absorption, and the alumina insulating outer layer 8 and the epoxy resin cured layer 13 provide insulation.

[0014] The shielded induction coil housing 1 has two annular ferrite 14 and annular ferrite 15 respectively sleeved on the busbar 4 at both ends, which can improve the anti-interference performance of the port position of the shielded induction coil housing 1. The outer surface of the shielded induction coil housing 1 is fixedly provided with several heat dissipation fins 16, and the outer surface of the shielded electronic device mounting housing 3 is fixedly provided with several heat dissipation fins 17, which can have the function of auxiliary heat dissipation. The breakdown-resistant assembly 6 consists of four insulating supports 18 and a grounding wire 2 19. The four insulating supports 18 are fixedly connected to the four corners of the top of the shielded electronic device mounting housing 3. The grounding wire 2 19 is connected to the top of the four insulating supports 18 and grounded. The insulating supports 18 support the grounding wire 2 19, and the grounding wire 2 19 can withstand breakdown protection, ensuring the safety of the shielded electronic device mounting housing 3. The distance between the grounding terminals of grounding wire 15 and grounding wire 219 is 10-20 meters to avoid mutual interference.

[0015] In operation, by setting up a shielded induction coil shell and a shielded electronic device mounting shell composed of an aluminum alloy layer, an aluminum oxide insulating outer layer, a carbon nanofiber layer, an aluminum foil layer, a copper mesh layer, a nanocrystalline absorbing layer, and an epoxy resin curing layer, the shielding performance can be improved, thereby enhancing the anti-electromagnetic interference performance and ensuring the working stability of the electronic current transformer. By setting up toroidal ferrite core one and toroidal ferrite core two, the shielding effect can be further improved. By setting up heat dissipation fins one and two, heat dissipation can be assisted. By setting up a breakdown-resistant assembly composed of four insulating pillars and grounding wire two, breakdown protection can be achieved for the shielded electronic device mounting shell.

Claims

1. A shielded electronic current transformer, comprising a shielded induction coil housing (1), an insulator (2), and a shielded electronic component mounting housing (3), characterized in that: The shielded induction coil housing (1) is fixedly connected to the top of the insulator (2), the shielded electronic device mounting housing (3) is fixedly connected to the bottom of the insulator (2), the induction coil is installed inside the shielded induction coil housing (1), a busbar (4) is provided through the middle of the inside of the shielded induction coil housing (1), the busbar (4) passes through the center of the induction coil, a grounding wire (5) is provided at one end of the bottom of the shielded induction coil housing (1), and a breakdown-resistant component (6) is provided at the top of the shielded electronic device mounting housing (3). The shielded induction coil housing (1) and the shielded electronic device mounting housing (3) are both composed of an aluminum alloy layer (7), an aluminum oxide insulating outer layer (8), a carbon nanofiber layer (9), an aluminum foil layer (10), a copper mesh layer (11), a nanocrystalline absorbing layer (12), and an epoxy resin curing layer (13). The aluminum oxide insulating outer layer (8) is connected to the outer surface of the aluminum alloy layer (7), the carbon nanofiber layer (9) is located on the inner surface of the aluminum alloy layer (7), the aluminum foil layer (10) is located on the inner surface of the carbon nanofiber layer (9), the copper mesh layer (11) is located on the inner surface of the aluminum foil layer (10), the nanocrystalline absorbing layer (12) is located on the inner surface of the copper mesh layer (11), and the epoxy resin curing layer (13) is located on the inner surface of the nanocrystalline absorbing layer (12). The aluminum foil layer (10) and the copper mesh layer (11) are connected to the grounding wire (5).

2. The shielded electronic current transformer according to claim 1, characterized in that: The shielded induction coil housing (1) has two annular ferrite one (14) and annular ferrite two (15) respectively sleeved on the busbar (4) at its two ends.

3. A shielded electronic current transformer according to claim 1, characterized in that: The outer surface of the shielded induction coil housing (1) is fixedly provided with several heat dissipation fins (16), and the outer surface of the shielded electronic device mounting housing (3) is fixedly provided with several heat dissipation fins (17).

4. A shielded electronic current transformer according to claim 1, characterized in that: The breakdown-resistant assembly (6) consists of four insulating pillars (18) and a second grounding wire (19). The four insulating pillars (18) are fixedly connected to the four corners of the top of the shielded electronic device mounting shell (3), and the second grounding wire (19) is connected to the top of the four insulating pillars (18) and grounded.

5. A shielded electronic current transformer according to claim 4, characterized in that: The distance between the grounding ends of grounding wire one (5) and grounding wire two (19) is 10-20 meters.

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