Mutual inductor structure with stable structure

Abstract

The utility model relates to a mutual inductor structure with a stable structure, a mutual inductor body comprises a metal box body and a top cover arranged on the surface of the metal box body, a winding secondary coil and a winding primary coil are arranged in the box body, a filler is arranged in the box body, the winding secondary coil and the winding primary coil are wrapped and protected by the filler, and the top cover is arranged on the surface of the metal box body. Supporting legs are arranged on the two sides of the winding primary wire body and fixed to the inner bottom of the box body through bolts, strip-shaped openings are formed in the two sides of the middle of the top cover respectively, a screw of the fixing support penetrates through a screw hole and is fixed to the bottom face of the top cover, and the top cover is fixed to the top face of the box body through bolts. And the top surface of the winding secondary coil is in contact with the bottom surface of the bottom plate and is wound and fixed through an electric adhesive tape. According to the utility model, the improvement is novel and ingenious, and the grooves arranged in the box body are beneficial to the stability of the support legs; and meanwhile, the fixing bracket is improved, so that the secondary coil of the winding can be fixed more favorably.

Description

Technical Field

[0001] The utility model belongs to the technical field of power transmission and transformation, and in particular relates to a transformer structure with stable structure. Background Art

[0002] Instrument transformers are common components in power transmission. They convert high voltages into low voltages or high currents into low currents for measurement, protection, and use in power systems. On December 3, 2019, our company applied for a patent application for a "Transformer Device for Facilitating Secondary Coil Fixing." The patent application included a mounting bracket designed to facilitate securing the secondary coil. However, during actual operation, the mounting bracket proved inconvenient for binding. As a technical improvement, we filed this application for this invention. Utility Model Content

[0003] In order to solve the above-mentioned problems in the prior art, the present invention provides a transformer structure with a stable structure, which can improve the above-mentioned deficiencies.

[0004] The utility model relates to a transformer structure with stable structure, comprising a transformer body, wherein the transformer body comprises a metal box and a top cover arranged on the surface of the metal box, the four sides of the top cover are wrapped around the opening surface of the metal box, a silicone wear-resistant layer is arranged on the surface of the box, and a waterproof layer is arranged in the inner cavity of the metal box; absorbent cotton strips are arranged at the corner positions in the metal box, and the absorbent cotton strips extend along the height direction of the metal box; the corner positions of the metal box and the corner positions of the cover plate are both rounded, and the box contains a winding secondary coil and a winding primary coil, wherein the winding primary coil is sleeved in the winding secondary wire, and they are isolated from each other, and the distance between them is at least greater than 12 cm, and the box A filler is provided inside the body, and the secondary winding coil and the primary winding coil are wrapped and protected by the filler. Support legs are provided on both sides of the primary winding body and fixed to the bottom of the box body by glue. A groove 19 is provided on the bottom of the box body to contact the support legs, and a part of the support legs is provided in the groove. A fixing bracket is provided on the top surface of the secondary winding coil. The fixing bracket includes a bottom plate and a plastic screw on the bottom plate, and its length is less than 5cm. The bottom plate is curved and fits the secondary winding coil. Since the bottom plate is designed in a curved shape, it is beneficial for the secondary winding coil to form more contact surfaces and improve stability. A connecting plate and a plastic nut are provided on the plastic screw, and the plastic nut is located above the connecting plate. A plastic nut is provided on the plastic screw. Strip openings are provided on both sides of the middle of the top cover, and screw holes are provided at the outer positions of the strip openings. The screw of the fixing bracket passes through the screw holes and is fixed to the bottom surface of the top cover. The top cover is fixed to the top surface of the box body by bolts. The top surface of the secondary winding coil contacts the bottom surface of the bottom plate and is fixed by wrapping with electrical tape, wherein the electrical tape is tightly wrapped around the secondary winding coil.

[0005] Furthermore, the plastic screw is made of PEET.

[0006] Furthermore, the bottom plate is in the shape of Roman numerals "Ⅱ" or "Ⅲ".

[0007] Furthermore, an anti-corrosion coating is provided on the surface of the base plate.

[0008] Furthermore, the anti-corrosion coating includes a butyl rubber layer, an aluminum foil layer and a silicone rubber layer.

[0009] Furthermore, the electrical tape has pre-torn seams on both sides. The pre-torn seams are located on one side of the electrical tape and are arranged obliquely, and contain fiber lines inside.

[0010] Furthermore, the waterproof layer is an electroplated film, and a PVC film is provided on its surface.

[0011] Furthermore, the fixing frame may also be a plastic structure.

[0012] The utility model has novel and ingenious improvements. The grooves are arranged in the box body, which is beneficial to the stability of the bracket feet. At the same time, the improvement of the fixed bracket makes it more conducive to the fixation of the winding secondary coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of the utility model.

[0014] Figure 2 This is a top view of the metal cover.

[0015] Figure 3 Schematic diagram of the fixed bracket structure.

[0016] Figure 4 Schematic diagram of the anti-corrosion coating structure.

[0017] Figure 5 Schematic diagram of the electrical tape structure.

[0018] Figure 6 Schematic diagram of the inner bottom structure of the metal box.

[0019] Diagram: 1 winding primary coil, 2 winding secondary coil, 3 top cover, 4 fixing bolts, 5 electrical tape, 51 pre-torn seam, 6 strip opening, 7 fixing bracket, 8 plastic nut, 9 screw hole, 10 plastic screw, 11 connecting strip, 12 absorbent cotton strip, 13 aluminum foil layer, 14 silicone adhesive layer, 15 butyl adhesive layer, 16 metal box, 17 top cover, 18 waterproof layer, 19 groove, 20 connecting plate, 21 filler. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] like Figure 1-5 The utility model relates to a transformer structure with stable structure, including a transformer body, wherein the transformer body includes a metal box 16 and a top cover 17 arranged on the surface of the metal box, the four sides of the top cover are wrapped around the opening surface of the metal box, a silicone wear-resistant layer (not shown) is provided on the surface of the box, and a waterproof layer 18 is provided in the inner cavity of the metal box; absorbent cotton strips 12 are provided at the corner positions inside the metal box, and the absorbent cotton strips extend along the height direction of the metal box; the absorbent cotton can absorb moisture in the metal box to ensure a dry environment; the corner positions of the metal box and the corner positions of the cover plate are both rounded, and the box contains a winding secondary coil 2 and a winding primary coil 1 , wherein the primary coil of the winding is inserted into the secondary coil of the winding, and they are isolated from each other, and the distance between them is at least greater than 12cm; a filler 21 is set in the box, and the secondary coil of the winding and the primary coil of the winding are wrapped and protected by the filler; support feet are set on both sides of the primary coil of the winding and fixed to the bottom of the box by glue, and a groove 19 is set on the bottom of the box to contact the support foot, and a part of the support foot is set in the groove. The fixed bracket includes a bottom plate and a plastic screw 10 on the bottom plate, and its length is less than 5cm; the bottom plate is bent and fits with the secondary coil of the winding, and a connecting plate 20 and a plastic nut 8 are set on the plastic screw, and the plastic nut is located above the connecting plate. Strip openings 6 are set on both sides of the middle of the top cover, and screw holes are set at the outer position of the strip opening. The plastic screw of the fixing bracket passes through the screw holes and is fixed to the bottom surface of the top cover, and the top cover is fixed to the top surface of the box by bolts; the top surface of the secondary coil of the winding is in contact with the bottom surface of the bottom plate and is fixed by wrapping with electrical tape 5, wherein the electrical tape is tightly wrapped around the secondary coil of the winding.

[0022] As a technical improvement, the plastic screw is made of PEET.

[0023] As a technical improvement, the bottom plate is in the shape of Roman numerals "Ⅱ" or "Ⅲ".

[0024] As a technical improvement, an anti-corrosion coating is provided on the surface of the base plate.

[0025] To enhance the rust resistance of the base plate, the anti-corrosion coating includes a butyl rubber layer 15, an aluminum foil layer 13, and a silicone rubber layer 14. The thickness of the aluminum foil layer is 0.06 μm, and the thickness of the butyl rubber layer is 0.1 μm. After 10 days of acid mist corrosion testing and high-temperature, high-humidity aging testing, the company found no obvious rust on the base plate surface, demonstrating its effectiveness.

[0026] like Figure 5 As shown, as a technical improvement, the electrical tape has pre-torn seams 51 on both sides, and contains fiber threads inside.

[0027] As a technical improvement, the waterproof layer is an electroplated film, and a PVC film is provided on its surface.

[0028] As an alternative technology, the fixing frame may also be a plastic structure, such as PEEK plastic.

[0029] This solution is a local improved structure. The first improvement is that a filler is set in the box. The filling punch can fix the two coil windings. At the same time, a connecting plate and a plastic nut are set on the plastic screw. The plastic nut is located above the connecting plate, which can reinforce the plastic nut and effectively suspend the bottom plate through the connecting plate.

Claims

1. A structurally stable transformer structure, comprising a transformer body, characterized in that: The transformer body includes a metal box and a top cover, the top cover is arranged on the surface of the metal box, the four sides of the top cover are wrapped around the opening surface of the metal box, the surface of the box is provided with a silicone wear-resistant layer, the box contains a winding secondary coil and a winding primary coil, wherein the winding primary coil is sleeved in the winding secondary wire, a filler is arranged in the box, the winding secondary coil and the winding primary coil are wrapped and protected by the filler, support feet are arranged on both sides of the winding primary wire body and are fixed to the bottom of the box by glue, a groove in contact with the bracket foot is arranged on the bottom of the box, a part of the support foot is arranged in the groove, the winding secondary A fixing bracket is set on the top surface of the coil, and the fixing bracket includes an aluminum base plate and a plastic screw on the aluminum base plate. The aluminum base plate is bent and fits with the secondary coil of the winding. A connecting plate and a plastic nut are set on the plastic screw, and the plastic nut is located above the connecting plate; strip openings are respectively set on both sides of the middle of the top cover, and screw holes are set at the outer sides of the strip openings. The plastic screw of the fixing bracket passes through the screw holes and is fixed to the bottom surface of the top cover, and the top cover is fixed to the top surface of the box by bolts; the top surface of the secondary coil of the winding is in contact with the bottom surface of the base plate and is fixed by wrapping electrical tape, wherein the electrical tape is tightly wrapped around the secondary coil of the winding.

2. The structurally stable mutual inductor structure according to claim 1, characterized in that: The plastic screw is made of PEET.

3. The structurally stable mutual inductor structure according to claim 1, characterized in that: An anti-corrosion coating is provided on the surface of the bottom plate.

4. The structurally stable mutual inductor structure according to claim 3, characterized in that: The anti-corrosion coating comprises a butyl rubber layer, an aluminum foil layer and a silicone rubber layer.

5. The structurally stable mutual inductor structure according to claim 1, characterized in that: The electrical tape has pre-torn seams on both sides and contains fiber threads inside.

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