Transformer with double-layer insulation structure

Abstract

The utility model relates to the technical field of electrical equipment, and discloses a transformer with a double-layer insulation structure, which comprises a mica shell and an iron core, the iron core is arranged in the mica shell, an insulation layer is arranged on the surface of the iron core, two sides of the iron core are connected with heat conduction silica gel in a clamping manner, one side of the heat conduction silica gel is provided with a heat dissipation assembly, and the other side of the heat dissipation assembly is provided with a heat insulation layer. A bottom plate is fixedly arranged at the bottom end of the mica shell, and the middle of the top end of the bottom plate is connected with the middle of the iron core in a clamped mode through an inner threaded sleeve. The beneficial effects of the utility model are that the middle part and two sides of the iron core can be limited through the internal thread sleeve and the heat-conducting silica gel, the stability of the iron core can be maintained, the threaded rod is screwed through the knob, the knob can limit the top end of the compression ring, the compression ring can limit the top end of the iron core, the iron core can be prevented from loosening and falling off, the assembly and disassembly are convenient, and the cost is low. The limiting assembly can limit the knob and can prevent the knob from loosening and falling off.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to a transformer with a double-layer insulation structure. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are the primary coil, secondary coil and iron core (magnetic core). Its main functions include voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization (magnetic saturation transformer), etc. It can be divided into power transformers and special transformers according to its use.

[0003] Its application number is "CN201821305896.4", which discloses a "low surge current toroidal transformer", which "includes an iron core body, a cutting gap is opened inside the iron core body, the side wall of the cutting gap is coated with an insulating paint layer, the inside of the cutting gap is filled with insulating paper, the side wall of the iron core body is movably connected with a spring clip, the inside of the spring clip is fixedly connected with a connecting rod, and one end of the connecting rod is fixedly connected with a pull rod". In the utility model, by setting a cutting gap, an insulating paint layer and insulating paper, after the iron core body of the transformer is wound, a cutting gap is cut on the iron core body by corresponding equipment, and a piece of insulating paper is padded in the cutting gap, and then the insulating paint layer can penetrate into the cutting gap on the iron core body, and by setting an outer shell, a rotating shaft and a screw, the iron core body is placed therein through the outer shell, and then fixed by the outer shell movable by the screw, and the iron core body is fixed by the spring clip at the same time, and then the iron core body inside the early stage is fixed.

[0004] However, the above method still has the following defects: the insulating paint coating layer and insulating paper inside the cutting gap can reduce the vibration and noise caused by the air gap, and the outer shell can protect the core body, but it is difficult to seal the top of the outer shell, resulting in reduced insulation of the outer shell; the core body can be fixed by a spring clip, but vibration can easily cause resonance of the spring, causing the core body to shake, making it difficult to maintain its stability. Summary of the invention

[0005] The utility model aims to provide a double-layer insulation structure transformer to solve the problem that the shell proposed in the above background technology can protect the core body, but it is difficult to block the top of the shell, resulting in reduced insulation of the shell.

[0006] The utility model provides the following technical scheme: a double-layer insulation structure transformer, comprising a mica shell and an iron core, the interior of the mica shell is provided with an iron core, the surface of the iron core is provided with an insulating layer, both sides of the iron core are snap-connected with thermal conductive silicone, one side of the thermal conductive silicone is provided with a heat dissipation component, a bottom plate is fixedly provided at the bottom end of the mica shell, the middle part of the top end of the bottom plate is snap-connected with the middle part of the iron core through an internal threaded sleeve, the top of the mica shell is connected with a pressure ring through a supporting ring, the middle part of the pressure ring is inserted and connected with a threaded rod, the threaded rod is threadedly connected with the internal threaded sleeve, the top of the threaded rod is fixed with a knob, and one side of the top end of the pressure ring is provided with a limit assembly.

[0007] As a preferred technical solution of the utility model, the heat dissipation component includes a curved copper plate and fins, one side of the curved copper plate is fixedly connected to one side of the thermal conductive silicone by screws, and a plurality of fins are fixedly provided on one side of the curved copper plate.

[0008] As a preferred technical solution of the utility model, a through hole is opened on the surface of the curved copper plate, and the screw is connected to the through hole through an insertion, and a threaded hole is opened on the surface of the thermal conductive silicone, and the screw is threadedly connected to the threaded hole.

[0009] As a preferred technical solution of the utility model, two heat dissipation grooves are provided on the surface of the mica shell, the curved copper plate is snap-connected with the heat dissipation grooves, and the thermal conductive silica gel is fixedly connected with the inner wall of the mica shell.

[0010] As a preferred technical solution of the utility model, the bottom end of the internal threaded sleeve is fixedly connected to the top end of the base plate, a plurality of mounting holes are opened on the surface of the base plate, a plurality of ribs are fixedly provided on the top end of the base plate, and one side of the ribs is fixedly connected to the bottom of the mica shell.

[0011] As a preferred technical solution of the utility model, the support ring is fixedly connected to the top of the mica shell, the surface of the support ring is snap-connected with a rubber ring, the support ring is overlapped by the bottom end of the rubber ring pressure ring, two wire grooves are provided on the surface of the pressure ring, and a coil is provided on the surface of the iron core, and the lead of the coil is connected to the wire groove through insertion.

[0012] As a preferred technical solution of the utility model, both sides of the top of the mica shell are provided with card slots, and both sides of the pressure ring are fixed with card blocks, and the card blocks are engaged and connected with the card slots.

[0013] As a preferred technical solution of the utility model, the limiting assembly includes a sleeve, a support shaft and a pressure plate. The bottom end of the sleeve is fixedly connected to one side of the top of the pressure ring, an axial hole is opened in the middle of the top of the sleeve, a cylinder is rotatably connected inside the sleeve, a support shaft is fixedly provided in the middle of the top of the cylinder, the support shaft is rotatably connected to the axial hole, a pressure plate is fixedly provided on the top of the support shaft, and an anti-slip pad is provided on one side of the bottom end of the pressure plate.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The double-layer insulation structure transformer can limit the middle and both sides of the iron core through the internal threaded sleeve and the thermal conductive silicone, so as to maintain the stability of the iron core. The threaded rod is tightened by the knob, and the knob can limit the top of the pressure ring. The pressure ring can limit the top of the iron core to prevent the iron core from loosening and falling off, which is convenient for installation and disassembly. The limit assembly can limit the knob to prevent the knob from loosening and falling off. It is firm and reliable and not easy to loosen. The insulating layer and the mica shell can realize double-layer insulation of the iron core. The knob and the pressure ring can block the top of the mica shell, thereby improving the insulation capacity of the iron core.

[0016] 2. The double-layer insulation structure transformer, the internal threaded sleeve and the thermal conductive silicone increase the fulcrum of the iron core. The thermal conductive silicone can absorb kinetic energy when vibrated, which can reduce the shock of the iron core. The iron core is not easy to shake, which improves its stability. The mica shell has good thermal conductivity, can absorb the heat of the iron core, and can dissipate the heat of the iron core. After the thermal conductive silicone is attached to the iron core, the heat dissipation component can absorb the heat of the iron core through the thermal conductive silicone, which improves the heat dissipation effect of the iron core and makes the iron core less likely to accumulate heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the mica shell of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the bottom plate of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the heat dissipation component of the utility model;

[0022] Figure 6 It is a structural schematic diagram of the limit assembly of the utility model.

[0023] In the figure: 1. Mica shell; 2. Iron core; 3. Insulation layer; 4. Thermal conductive silicone; 5. Threaded hole; 6. Heat dissipation component; 601. Curved copper plate; 602. Fin; 603. Screw; 604. Through hole; 7. Bottom plate; 8. Mounting hole; 9. Rib plate; 10. Heat dissipation slot; 11. Support ring; 12. Rubber ring; 13. Slot; 14. Internal threaded sleeve; 15. Pressing ring; 16. Threaded rod; 17. Knob; 18. Limiting component; 1801. Sleeve; 1802. Cylinder; 1803. Shaft hole; 1804. Support shaft; 1805. Pressure plate; 1806. Anti-slip pad; 19. Block; 20. Wire trough. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings in the embodiments of the present invention.

[0025] See also Figures 1 to 6 In the embodiment of the utility model, a double-layer insulation structure transformer includes a mica shell 1 and an iron core 2. The iron core 2 is arranged inside the mica shell 1, and the surface of the iron core 2 is provided with an insulating layer 3. Both sides of the iron core 2 are snap-connected with thermal conductive silicone 4, and one side of the thermal conductive silicone 4 is provided with a heat dissipation component 6. The bottom end of the mica shell 1 is fixedly provided with a bottom plate 7, and the middle part of the top of the bottom plate 7 is snap-connected with the middle part of the iron core 2 through an internal thread sleeve 14. The middle part and both sides of the iron core 2 can be limited by the internal thread sleeve 14 and the thermal conductive silicone 4, so as to maintain the stability of the iron core 2. The mica shell 1 The top of the pressing ring 15 is connected to the pressing ring 15 through the supporting ring 11, and the middle of the pressing ring 15 is interspersed with a threaded rod 16, which is threadedly connected to the internal threaded sleeve 14, and the top of the threaded rod 16 is fixed with a knob 17, and the threaded rod 16 is tightened by the knob 17, and the knob 17 can limit the top of the pressing ring 15, and the pressing ring 15 can limit the top of the iron core 2 to prevent the iron core 2 from loosening and falling off, which is convenient for quickly installing and disassembling the iron core 2, and a limiting component 18 is provided on one side of the top of the pressing ring 15, and the limiting component 18 can limit the knob 17 to prevent the knob 17 from loosening and falling off;

[0026] In this embodiment, preferably, the heat dissipation component 6 includes a curved copper plate 601 and fins 602, one side of the curved copper plate 601 is fixedly connected to one side of the thermally conductive silicone 4 by a screw 603, and a plurality of fins 602 are fixedly provided on one side of the curved copper plate 601. The curved copper plate 601 has good thermal conductivity and can absorb the heat of the iron core 2 through the thermally conductive silicone 4, thereby improving the heat dissipation effect;

[0027] In this embodiment, preferably, a through hole 604 is provided on the surface of the curved copper plate 601, and the screw 603 is inserted and connected with the through hole 604, and a threaded hole 5 is provided on the surface of the thermal conductive silicone 4, and the screw 603 is threadedly connected with the threaded hole 5, and the screw 603 can be inserted through the through hole 604, and the screw 603 can be positioned through the threaded hole 5;

[0028] In this embodiment, preferably, two heat dissipation grooves 10 are provided on the surface of the mica shell 1, and the curved copper plate 601 is engaged with the heat dissipation grooves 10, and the curved copper plate 601 can be placed through the heat dissipation grooves 10, and one side of the curved copper plate 601 can be exposed to the outside, and the thermal conductive silica gel 4 is fixedly connected to the inner wall of the mica shell 1, which can ensure the firmness of the thermal conductive silica gel 4;

[0029] In this embodiment, preferably, the bottom end of the internal threaded sleeve 14 is fixedly connected to the top of the bottom plate 7, a plurality of mounting holes 8 are provided on the surface of the bottom plate 7, a plurality of ribs 9 are fixedly provided on the top of the bottom plate 7, one side of the ribs 9 is fixedly connected to the bottom of the mica shell 1, the ribs 9 can be used to reinforce the bottom plate 7 and the mica shell 1, and the mica shell 1 can be fixedly installed through the mounting holes 8;

[0030] In this embodiment, preferably, the support ring 11 is fixedly connected to the top of the mica shell 1, and the surface of the support ring 11 is snap-connected with the rubber ring 12, and the support ring 11 is overlapped with the bottom end of the pressure ring 15 through the rubber ring 12, and the surface of the pressure ring 15 is provided with two wire grooves 20, and the surface of the iron core 2 is provided with a coil, and the lead wire of the coil is inserted and connected with the wire groove 20;

[0031] In this embodiment, preferably, both sides of the top of the mica shell 1 are provided with a card slot 13, and both sides of the pressure ring 15 are fixed with a card block 19, and the card block 19 is engaged with the card slot 13. The card slot 13 and the card block 19 can prevent the pressure ring 15 from rotating, thereby improving the stability of the pressure ring 15;

[0032] In this embodiment, preferably, the limiting assembly 18 includes a sleeve 1801, a support shaft 1804 and a pressure plate 1805. The bottom end of the sleeve 1801 is fixedly connected to one side of the top of the pressure ring 15. The middle part of the top of the sleeve 1801 is provided with an axial hole 1803. The inside of the sleeve 1801 is rotatably connected with a cylinder 1802. The middle part of the top of the cylinder 1802 is fixedly provided with a support shaft 1804. The support shaft 1804 is rotatably connected to the axial hole 1803. The top of the support shaft 1804 is fixedly provided with a pressure plate 1805. The bottom of the pressure plate 1805 An anti-skid pad 1806 is provided on one side of the end, and the support shaft 1804 can be limited by the cylinder 1802 to prevent the support shaft 1804 from falling off. The pressure plate 1805 is rotated by the support shaft 1804 to make it leave the knob 17, so as to ensure the rotation of the knob 17. By rotating the pressure plate 1805 to the top of the knob 17, the anti-skid pad 1806 can increase the fit and friction between the pressure plate 1805 and the knob 17, thereby preventing the knob 17 from rotating, maintaining the stability of the knob 17 and the threaded rod 16, and preventing them from loosening.

[0033] When in use, firstly, the iron core 2 is sleeved on the surface of the internal thread sleeve 14, the internal thread sleeve 14 and the thermal conductive silica gel 4 can limit the middle and both sides of the iron core 2, then the lead wire of the coil of the iron core 2 is passed through the wire groove 20, and then the block 19 of the pressure ring 15 is engaged with the slot 13 of the mica shell 1, and the support ring 11 can support the pressure ring 15 through the rubber ring 12, and then the threaded rod 16 is tightened by the knob 17, and the knob 17 can limit the top of the iron core 2 through the pressure ring 15, and finally the pressure plate 1805 is rotated to the top of the knob 17 through the support shaft 1804 of the limiting component 18, and the anti-skid pad 1806 can increase the fit and friction between the pressure plate 1805 and the knob 17, which can prevent the knob 17 from rotating and not easily loosening, so that the iron core 2 can be quickly fixed;

[0034] During the operation of the core 2, the insulating layer 3 and the mica shell 1 can realize double-layer insulation of the core 2, the knob 17 and the pressure ring 15 can block the top of the mica shell 1, and can improve the insulation capacity of the core 2. When the core 2 is vibrated, the internal thread sleeve 14 and the thermal conductive silicone 4 are provided to increase the fulcrum of the core 2. When the core 2 is vibrated, the thermal conductive silicone 4 can absorb kinetic energy, and can reduce the shock of the core 2, so that the core 2 is not easy to shake.

[0035] The mica shell 1 has good thermal conductivity while being insulated, and can absorb the heat of the iron core 2 and dissipate the heat of the iron core 2. After the thermal conductive silicone 4 is attached to the iron core 2, the curved copper plate 601 of the heat dissipation component 6 can absorb the heat of the iron core 2 through the thermal conductive silicone 4, and can increase the contact area with the air through the fins 602, thereby improving the heat dissipation effect of the iron core 2, and the iron core 2 is not easy to accumulate heat.

[0036] 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 double-layer insulation structure transformer, comprising a mica shell (1) and an iron core (2), characterized in that: An iron core (2) is provided inside the mica shell (1), an insulating layer (3) is provided on the surface of the iron core (2), both sides of the iron core (2) are snap-connected with heat-conducting silica gel (4), one side of the heat-conducting silica gel (4) is provided with a heat dissipation component (6), a bottom plate (7) is fixedly provided at the bottom end of the mica shell (1), the middle part of the top end of the bottom plate (7) is snap-connected with the middle part of the iron core (2) through an internal thread sleeve (14), the top of the mica shell (1) is connected with a pressure ring (15) through a supporting ring (11), the middle part of the pressure ring (15) is inserted and connected with a threaded rod (16), the threaded rod (16) is threadedly connected to the internal thread sleeve (14), a knob (17) is fixedly provided at the top end of the threaded rod (16), and a limit assembly (18) is provided on one side of the top end of the pressure ring (15).

2. The double-layer insulation structure transformer according to claim 1, characterized in that: The heat dissipation component (6) comprises a curved copper plate (601) and fins (602); one side of the curved copper plate (601) is fixedly connected to one side of the thermal conductive silicone (4) via screws (603); and a plurality of fins (602) are fixedly provided on one side of the curved copper plate (601).

3. The double-layer insulation structure transformer according to claim 2, characterized in that: A through hole (604) is provided on the surface of the curved copper plate (601), and the screw (603) is connected to the through hole (604) by insertion; a threaded hole (5) is provided on the surface of the thermal conductive silica gel (4), and the screw (603) is connected to the threaded hole (5) by threading.

4. The double-layer insulation structure transformer according to claim 2, characterized in that: The surface of the mica shell (1) is provided with two heat dissipation grooves (10), the curved copper plate (601) is snap-connected to the heat dissipation grooves (10), and the thermally conductive silica gel (4) is fixedly connected to the inner wall of the mica shell (1).

5. The double-layer insulation structure transformer according to claim 1, characterized in that: The bottom end of the internal threaded sleeve (14) is fixedly connected to the top end of the bottom plate (7); a plurality of mounting holes (8) are provided on the surface of the bottom plate (7); a plurality of ribs (9) are fixedly provided on the top end of the bottom plate (7); one side of the ribs (9) is fixedly connected to the bottom of the mica shell (1).

6. The double-layer insulation structure transformer according to claim 1, characterized in that: The support ring (11) is fixedly connected to the top of the mica shell (1); a rubber ring (12) is snap-connected to the surface of the support ring (11); the support ring (11) is overlapped with the bottom end of the pressure ring (15) through the rubber ring (12); two wire grooves (20) are provided on the surface of the pressure ring (15); a coil is provided on the surface of the iron core (2); and the lead wire of the coil is inserted and connected to the wire groove (20).

7. The double-layer insulation structure transformer according to claim 1, characterized in that: Both sides of the top of the mica shell (1) are provided with card slots (13), and both sides of the pressure ring (15) are fixedly provided with card blocks (19), and the card blocks (19) are card-engaged and connected with the card slots (13).

8. The double-layer insulation structure transformer according to claim 1, characterized in that: The limiting assembly (18) comprises a sleeve (1801), a support shaft (1804) and a pressure plate (1805); the bottom end of the sleeve (1801) is fixedly connected to one side of the top end of the pressure ring (15); an axial hole (1803) is provided in the middle of the top end of the sleeve (1801); a cylinder (1802) is rotatably connected inside the sleeve (1801); a support shaft (1804) is fixedly provided in the middle of the top end of the cylinder (1802); the support shaft (1804) is rotatably connected to the axial hole (1803); a pressure plate (1805) is fixedly provided at the top end of the support shaft (1804); and an anti-slip pad (1806) is provided on one side of the bottom end of the pressure plate (1805).

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