CN219163120U

CN219163120U - Power transformer for liner power supply

Info

Publication number: CN219163120U
Application number: CN202223430198.6U
Authority: CN
Inventors: 杨雅琴
Original assignee: Dongguan Liqin Electronics Product Co ltd
Current assignee: Dongguan Liqin Electronics Product Co ltd
Priority date: 2022-12-21
Filing date: 2022-12-21
Publication date: 2023-06-09
Anticipated expiration: 2032-12-21

Abstract

The utility model discloses a liner power supply transformer which comprises a rectangular bottom plate, wherein a four-point type bolting structure is arranged at the bottom end of the rectangular bottom plate, an annular iron core is arranged at the top end of the rectangular bottom plate, a shielding cover is packaged on the outer peripheral surface of the annular iron core, a primary coil and a secondary coil are wound on the outer peripheral surface of the annular iron core, heat-conducting silica gel resin is encapsulated in the central position of the top end of the rectangular bottom plate, and the ends of the primary coil and the secondary coil are led out from a gap between the heat-conducting silica gel resin and the rectangular bottom plate through a primary coil lead-out wire and a secondary coil lead-out wire. The utility model has low magnetic flux leakage quantity, low working noise, reduced transformer loss and impact interference, can realize no-load current with the same value by using fewer winding turns, is favorable for heat dissipation, saves copper, reduces the internal resistance of the transformer, and can effectively meet the use requirements of heat dissipation, low noise and low magnetic flux leakage of a high-end liner machine.

Description

Power transformer for liner power supply

Technical Field

The utility model relates to the technical field of liner machines, in particular to a liner machine power supply transformer.

Background

The liner machine is characterized in that an amplifier of an electronic tube is used as an acoustic element, the electronic tube is used for amplifying, the electronic tube is used for color rendering, the liner machine has unique liner taste, is warm and resistant to sound, has good music feeling and good atmosphere, and the basic components of a liner machine circuit comprise a power transformer, a rectifier, a filter, a voltage amplifier, a push (excitation) inverter, a cathode output device and a power (final stage) amplifier, wherein the liner machine is the most important power transformer, the power transformer is responsible for the power supply of the whole machine, the quality of the transformer directly influences the power amplification of the liner machine and the tone quality output of high quality, the conventional liner machine power transformer adopts a laminated iron core transformer, however, an air gap and magnetic leakage are large between EI sheets, the working noise of the liner machine is increased, the laminated iron core transformer has a plurality of window areas, unfavorable heat dissipation, copper cost and high internal resistance, and the use requirement of the high-end liner machine is difficult to meet.

Disclosure of Invention

The utility model aims to provide a power transformer for a liner, which aims to solve the problems of large air gap and magnetic leakage, high working noise and insufficient heat dissipation performance of the power transformer for the liner in the prior art, and the problems of insufficient use requirements of a high-end liner machine.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a courage power supply transformer, includes the rectangle bottom plate, four point type bolting structure is installed to the bottom of rectangle bottom plate, annular iron core is installed on the top of rectangle bottom plate, just annular iron core's outer peripheral face encapsulation has the shield cover, annular iron core's outer peripheral face winding has primary coil and secondary coil, the top central point department embedment of rectangle bottom plate has heat conduction silica gel resin, primary coil and secondary coil's tip is drawn forth through primary coil lead-out wire, secondary coil lead-out wire from the gap department of heat conduction silica gel resin and rectangle bottom plate.

Preferably, the interior of the shielding case is filled with an epoxy resin layer.

Preferably, the annular iron core is an annular cutting iron core and is made of a member made of low-loss silicon steel materials.

Preferably, the four-point type bolting structure is four groups of support legs arranged at the corner position of the top end of the rectangular bottom plate, the inside of each support leg is provided with a main positioning hole, the corner position of the bottom end of the rectangular bottom plate is provided with an auxiliary positioning hole, and dots of the auxiliary positioning holes and the main positioning holes are on the same vertical line.

Preferably, the diameter of the auxiliary positioning hole is smaller than that of the main positioning hole, and the edge line at the top end of the rectangular bottom plate is provided with a flanging edge.

Preferably, the shield case is made of a member made of copper-clad material.

Compared with the prior art, the utility model has the beneficial effects that: the transformer comprises a primary coil, a secondary coil, a primary coil lead-out wire, a secondary coil lead-out wire, a winding number of the primary coil and the secondary coil, wherein the primary coil and the secondary coil are arranged on the same annular iron core in a mutually matched mode.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic perspective view of the present utility model;

FIG. 3 is a schematic view of a front cross-sectional structure of a shielding case according to the present utility model;

fig. 4 is a schematic structural view of the annular iron core in a cutting and separating state according to the present utility model;

in the figure: 1. a rectangular bottom plate; 101. a secondary positioning hole; 102. turning over the edge; 2. a support leg; 201. a main positioning hole; 3. a shield; 4. a thermally conductive silicone resin; 5. a primary coil lead-out wire; 6. a secondary coil outgoing line; 7. an annular iron core; 8. an epoxy resin layer.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, an embodiment of the present utility model is provided: the utility model provides a courage power supply transformer, including rectangle bottom plate 1, four-point type bolting structure is installed to rectangle bottom plate 1's bottom, four-point type bolting structure is for installing four sets of stabilizer blades 2 in rectangle bottom plate 1 top corner position department, the inside of stabilizer blade 2 is provided with main locating hole 201, rectangle bottom plate 1 bottom corner position department all is provided with vice locating hole 101, the dot of vice locating hole 101 and main locating hole 201 is on same vertical line, the diameter of vice locating hole 101 is less than the diameter of main locating hole 201, rectangle bottom plate 1 top edge department all is provided with turns over a limit 102;

the liner power supply transformer is mounted on a using plane through the cooperation of the auxiliary positioning holes 101, the main positioning holes 201 and bolts, and a certain distance exists between the mounted liner power supply transformer and the mounting surface for heat dissipation;

the top end of the rectangular bottom plate 1 is provided with an annular iron core 7, the peripheral surface of the annular iron core 7 is encapsulated with a shielding case 3, the peripheral surface of the annular iron core 7 is wound with a primary coil and a secondary coil, the annular iron core 7 is an annular cutting iron core, and is made of low-loss silicon steel materials, so that the leakage flux is low, the working noise is low, the transformer loss and impact interference are reduced, and no-load current with the same value can be realized by using fewer winding turns;

the central position of the top end of the rectangular bottom plate 1 is filled with heat-conducting silica gel resin 4, the ends of the primary coil and the secondary coil are led out from the gap between the heat-conducting silica gel resin 4 and the rectangular bottom plate 1 through a primary coil lead-out wire 5 and a secondary coil lead-out wire 6, the bottom end of the rectangular bottom plate 1 is fixed by the impregnation of the heat-conducting silica gel resin 4, and the excitation current and the magnetic leakage of the transformer are reduced

The primary coil and the secondary coil are all wound on the same annular iron core 7 and finally led out through a primary coil lead-out wire 5 and a secondary coil lead-out wire 6;

the number of turns of the annular winding is large, the volume is small, when the load current of the secondary is changed in the working process of the transformer, the current will generate a changed reflection current at the primary, the instantaneous value of the magnetic induction intensity is a function of the instantaneous value of the primary no-load alternating current, the induced voltage is in direct proportion to the change rate of the magnetic flux, at the moment, the magnetic flux is increased through the annular iron core 7, and the magnetic flux is increased as the magnetic permeability of the annular iron core 7 is increased;

the shielding cover 3 is made of a member made of copper-clad steel, a layer of shielding cover 3 is sealed on the outer peripheral surface of the annular iron core 7, the shielding cover plays roles of shielding magnetic leakage interference and reducing noise, and an epoxy resin layer 8 is filled in the shielding cover 3;

the epoxy resin layer 8 is encapsulated in the rectangular bottom plate 1, so that the vibration of the annular iron core 7 and the winding caused by alternating current is reduced, the noise of the transformer can be reduced, and the installation and heat dissipation can be reinforced.

When the transformer is used, the primary coil and the secondary coil are wound on the same annular iron core 7, and finally led out through the primary coil lead-out wire 5 and the secondary coil lead-out wire 6, the number of turns of the annular winding is large, the volume is small, in the working process of the transformer, when the secondary load current changes, the current generates a changed reflection current at the primary, the instantaneous value of the magnetic induction intensity is a function of the instantaneous value of the primary no-load alternating current, the induced voltage is in direct proportion to the change rate of the magnetic flux, the magnetic flux is increased through the annular iron core 7, the magnetic permeability of the annular iron core 7 is increased, the magnetic flux is increased, the annular iron core 7 is an annular cutting iron core, high-grade low-loss silicon steel material is adopted, the leakage flux is low, the working noise is low, the transformer loss and the impact interference are reduced, the number of turns of windings is reduced, the same value no-load current is realized, the heat dissipation is beneficial, copper is saved, the internal resistance of the transformer is reduced, the effect of shielding leakage magnetic interference and noise is reduced by sealing a layer of shielding cover 3 on the outer peripheral surface of the annular iron core 7, the effect is achieved, the effect of shielding leakage magnetic interference and noise is reduced, the noise is fixed through the heat conducting resin 4, the bottom end of the rectangular bottom plate 1 is immersed and is reduced, the transformer is further reduced, the transformer is and the alternating leakage magnetic flux is replaced in the rectangular iron core 1, the electromagnetic iron core is installed in the annular iron core, and the vibration layer, and the vibration has high-insulating effect, and has high noise, and low noise, and can be easy to realize and has high vibration.

Claims

1. The utility model provides a courage power supply transformer, its characterized in that includes rectangle bottom plate (1), four-point type bolting structure is installed to the bottom of rectangle bottom plate (1), annular iron core (7) are installed on the top of rectangle bottom plate (1), just the outer peripheral face encapsulation of annular iron core (7) has shield cover (3), the outer peripheral face winding of annular iron core (7) has primary coil and secondary coil, the top central point department embedment of rectangle bottom plate (1) has heat conduction silica gel resin (4), primary coil and secondary coil's tip is drawn forth through primary coil lead-out wire (5), secondary coil lead-out wire (6) from the gap department of heat conduction silica gel resin (4) and rectangle bottom plate (1).

2. A power source transformer for a container as defined in claim 1, wherein: an epoxy resin layer (8) is filled in the shielding cover (3).

3. A power source transformer for a container as defined in claim 1, wherein: the annular iron core (7) is an annular cutting iron core and is made of low-loss silicon steel members.

4. A power source transformer for a container as defined in claim 1, wherein: four point type bolting structure is four sets of stabilizer blades (2) of installing in rectangular bottom plate (1) top corner position department, the inside of stabilizer blade (2) is provided with main locating hole (201), the corner position department of rectangular bottom plate (1) bottom all is provided with vice locating hole (101), the dot of vice locating hole (101) and main locating hole (201) is on same vertical line.

5. The power transformer of claim 4, wherein: the diameter of the auxiliary positioning hole (101) is smaller than that of the main positioning hole (201), and the edge line at the top end of the rectangular bottom plate (1) is provided with a flanging (102).

6. A power source transformer for a container as defined in claim 1, wherein: the shielding cover (3) is made of a member made of copper-clad material.