CN216119887U

CN216119887U - Super isolation transformer based on Faraday shielding structure

Info

Publication number: CN216119887U
Application number: CN202122882711.4U
Authority: CN
Inventors: 邓勇
Original assignee: Chengdu Xinya Electronic Technology Research Institute
Current assignee: Chengdu Xinya Electronic Technology Research Institute
Priority date: 2021-11-23
Filing date: 2021-11-23
Publication date: 2022-03-22
Anticipated expiration: 2031-11-23

Abstract

The application discloses super isolation transformer based on faraday shield structure, including winding the winding unit on two iron cores that set up side by side, the iron core is vertical O type closed loop structure of placing, and winding unit horizontal winding is on two iron cores, and the winding unit is by overlapping the input winding and the output winding of placing from top to bottom to and inlay and insert two T type division boards that are used for keeping apart between input winding and the output winding, two all be provided with the wiring board on the T type division board, fixedly connected with bottom plate can be dismantled to the iron core bottom, the bottom plate forms the hollow structure who is used for holding winding unit and iron core with the housing that can dismantle the connection. According to the utility model, mutual isolation and shielding among windings in the transformer can be realized by arranging the specially-shaped bent T-shaped isolation plate, so that electrostatic interference among the windings is avoided; the T-shaped isolation plate is wrapped between the outer side of the winding unit and the shielding cover to form double-layer shielding isolation, and the anti-interference performance is extremely high.

Description

Super isolation transformer based on Faraday shielding structure

Technical Field

The utility model relates to the field of power equipment, in particular to a small-sized super-isolation transformer, and particularly relates to a super-isolation transformer based on a Faraday shielding structure.

Background

The isolation transformer is a transformer with an input winding and an output winding electrically isolated, the isolation transformer is used for avoiding touching an electrified body accidentally, and the isolation of the transformer is used for isolating respective currents of the primary winding and the secondary winding. In the early days, the power supply is used in the electric power industry in European countries and is widely used for control power supplies, safety lighting and indicator lamps of general circuits in nuclear industry, electronic industry or industrial and mining enterprises, machine tools and mechanical equipment.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that electrostatic interference may exist in a circuit between windings due to incomplete insulation or incomplete isolation of electrical appliances between the windings or under the condition of high frequency of the existing transformer in the working process, the application provides a super-isolation transformer based on a Faraday shielding structure, so that the windings and the whole transformer are in an electrostatic shielding state to the external environment, the super-isolation transformer has extremely high anti-interference performance, and the transformer works more stably.

In order to achieve the purpose, the technical scheme adopted by the application is as follows:

the utility model provides a super isolation transformer based on faraday shield structure, includes the winding unit of winding on two iron cores that set up side by side, the iron core is the vertical O type closed loop structure of placing, winding unit horizontal winding is on two iron cores, the winding unit is by the input winding and the output winding that overlap from top to bottom and place, and inlay and insert two T type division boards that are used for keeping apart between input winding and the output winding, two all be provided with the wiring board on the T type division board, fixedly connected with bottom plate can be dismantled to the iron core bottom, the bottom plate forms the hollow structure who is used for holding winding unit and iron core with the shield cover of dismantling the connection.

The working principle is as follows:

the working principle of the super-isolation transformer is consistent with that of the existing transformer, and the main improvement points are that the shielding structures inside the transformer are arranged mutually and the structure of the transformer for shielding the transformer is arranged externally.

The shielding between the internal windings realizes double-layer shielding and isolation through two T-shaped isolation plates arranged between the input winding and the output winding, and meanwhile, the T-shaped isolation plates also have a shielding effect on two side surfaces of the winding unit, so that the electrostatic interference is reduced as much as possible.

Externally speaking, this application is provided with bottom plate and the shield cover that realizes full parcel, avoids omnidirectional electrostatic shielding, realizes the electromagnetic radiation influence outside mutual influence and the transformer between the transformer internal winding.

Preferably, the T-shaped isolation plate is composed of a vertical plate and a transverse plate which are mutually perpendicular and fixedly connected, two side edges of the transverse plate are perpendicularly bent towards the same side to form a folded edge for isolating the input winding from the output winding, and the folded edge can shield the side surface of the winding unit to play a role in blocking, so that an isolation blind area between the input winding and the output winding is avoided.

The middle part of diaphragm is provided with and is used for dodging the notch of iron core, the area of riser is greater than the area of projection of winding unit on the riser. The area of riser is enough big, can reduce, eliminates the external electromagnetic radiation of winding unit even, avoids appearing keeping apart the blind area and produces electromagnetic pollution.

In order to realize the fixed to the iron core, simultaneously with forming good conductor, two between whole iron core and the bottom plate the surface of iron core is provided with the steel sheet that is used for fixed iron core, two free ends and the centre of steel sheet all with can dismantle the setting and be in pull rod joint on the bottom plate, the quantity of pull rod is three, is located two respectively the centre of iron core and the position that both sides are close to the bottom plate, arbitrary one the pull rod all is through fastener fixed connection. Through above-mentioned structure can adjust the firm degree between iron core and the bottom plate through the mode of adjusting the fastener for both satisfy fixed, electrically conductive technological effect, can realize dismantling the maintenance simultaneously again. It is worth to say that, because the bottom plate is grounded in actual use, the iron core can be in zero potential due to the connection between the iron core and the bottom plate, and a stable and reliable electromagnetic environment is provided for the operation of the transformer to the greatest extent.

In order to avoid current crossing among multiple windings, preferably, a wiring board is installed on one side of any vertical plate far away from the iron core, a plurality of wiring contacts are arranged on the wiring board, and an insulating pad is arranged between the wiring board and the vertical plate.

In order to facilitate subsequent overhaul, preferably, a plurality of connecting lug plates bent upwards are symmetrically or uniformly distributed on the edge of the bottom plate, and any one of the connecting lug plates is provided with a clamping structure or a connecting hole corresponding to the shielding case. The main advantage of the mode that the shield cover adopts the detachable connection lies in that the shield cover plays the roles of shielding, isolating and preventing dust when in working state, and can realize quick disassembly and assembly when in maintenance.

In order to facilitate wiring, it is preferable that each of the input winding and the output winding has a plurality of independent winding loops, and each of the independent winding loops is provided with a corresponding wiring contact on the wiring board.

In order to further enhance the shielding and isolating effect between the windings, preferably, insulating paper is further disposed between the input winding and the iron core and between the output winding and the iron core.

Has the advantages that:

according to the utility model, mutual isolation and shielding among windings in the transformer can be realized by arranging the specially-shaped bent T-shaped isolation plate, so that electrostatic interference among the windings is avoided; meanwhile, the T-shaped isolation plate is wrapped between the outer side of the winding unit and the shielding cover to form double-layer shielding isolation, and the anti-interference performance is extremely high.

The iron core, the bottom plate and the shielding case are all detachably connected in a conductive manner, so that the whole shielding structure is at zero potential, a better Faraday shielding structure is formed, and a good super-isolation effect is achieved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is an isometric view of the structure of the present invention.

Fig. 2 is a front view of fig. 1.

Fig. 3 is a full sectional view taken along the cut line a-a in fig. 2.

Fig. 4 is an exploded view of the structure of fig. 1.

Fig. 5 is a wiring diagram of embodiment 2.

In the figure: 1-a shielding case; 2-a bottom plate; 21-connecting tabs; 3-a pull rod; 4-steel sheet; 5-iron core; 6-insulating paper; 7-T type isolation plates; 71-a vertical plate; 72-a transverse plate; 73-folding edges; 74-notches; 8-patch panel; 81-wiring contacts; 9-an insulating pad; 10-a fastener; 11-an input winding; 12-output winding.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the application is used, the description is only for convenience and simplicity, and the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application. Furthermore, the appearances of the terms "first," "second," and the like in the description herein are only used for distinguishing between similar elements and are not intended to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like when used in the description of the present application do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Example 1:

combine that specification attached drawing 1-fig. 4 show a super isolation transformer based on faraday shield structure, including winding the winding unit on two iron cores 5 that set up side by side, iron core 5 is the O type closed loop structure of vertical placing, winding unit horizontal winding is on two iron cores 5, the winding unit is by upper and lower overlapping input winding 11 and output winding 12 of placing to and inlay and insert two T type division boards 7 that are used for keeping apart between input winding 11 and the output winding 12, two all be provided with wiring board 8 on the T type division board 7, fixedly connected with bottom plate 2 can be dismantled to iron core 5 bottom plate 2 forms the hollow structure who is used for holding winding unit and iron core 5 with the shield cover 1 of dismantling the connection.

The working principle is as follows:

The shielding between the internal windings realizes double-layer shielding and isolation through the two T-shaped isolation plates 7 arranged between the input winding 11 and the output winding 12, and meanwhile, the T-shaped isolation plates 7 also have a shielding effect on two side surfaces of the winding unit, so that the electrostatic interference is reduced as much as possible.

Externally speaking, this application is provided with bottom plate 2 and the shield cover 1 that realizes full parcel, avoids omnidirectional electrostatic shielding, realizes the influence of mutual influence and transformer electromagnetic radiation outside between the transformer internal winding.

Example 2:

on the premise of clarifying the structure and principle of the present invention, on the basis of embodiment 1, the present embodiment is specifically configured in a detailed manner in the following structure, and further, as shown in fig. 1 to fig. 4 in the specification, the T-shaped isolation plate 7 is composed of a vertical plate 71 and a horizontal plate 72 which are vertically and fixedly connected with each other, two side edges of the horizontal plate 72 are vertically bent towards the same side to form a folded edge 73 for isolating the input winding 11 from the output winding 12, and the folded edge 73 can shield the side surface of the winding unit to play a role in blocking, so as to avoid an isolation blind area between the input winding 11 and the output winding 12.

The middle part of the transverse plate 72 is provided with a notch 74 for avoiding the iron core 5, and the area of the vertical plate 71 is larger than the projection area of the winding unit on the vertical plate 71. The area of riser 71 is enough big, can reduce, eliminates the external electromagnetic radiation of winding unit even, avoids appearing the isolation blind area and produces electromagnetic pollution. In order to realize fixing iron core 5, simultaneously with forming good conductor, two between whole iron core 5 and the bottom plate 2 iron core 5's surface is provided with steel sheet 4 that is used for fixed iron core 5, two free ends and the centre of steel sheet 4 all with can dismantle the setting and be in 3 joints of pull rod on the bottom plate 2, the quantity of pull rod 3 is three, is located two respectively the centre of iron core 5 and the position that both sides are close to bottom plate 2, arbitrary pull rod 3 all through fastener 10 fixed connection. Through the structure, the firmness degree between the iron core 5 and the bottom plate 2 can be adjusted in a mode of adjusting the fastener 10, so that the technical effects of fixation and electric conduction are met, and meanwhile, the detachable maintenance can be realized. It is worth to be noted that, because the bottom plate 2 is grounded in actual use, the connection between the iron core 5 and the bottom plate 2 can make the iron core 5 at zero potential, and a stable and reliable electromagnetic environment is provided for the operation of the transformer to the greatest extent.

In order to avoid current crossing among multiple windings, in the embodiment, a wiring board 8 is installed on one side of any vertical plate 71 far away from the iron core 5, a plurality of wiring contacts 81 are arranged on the wiring board 8, and an insulating pad 9 is arranged between the wiring board 8 and the vertical plate 71.

In order to facilitate subsequent maintenance, a plurality of connecting lug pieces 21 bent upwards are symmetrically or uniformly distributed on the edge of the bottom plate 2, and any connecting lug piece 21 is provided with a clamping structure or a connecting hole corresponding to the shielding case 1. The main advantages of the detachable connection mode of the shielding case 1 are that the shielding, isolation and dust prevention functions are realized in the working state, and the quick disassembly and assembly can be realized during the maintenance.

For the purpose of facilitating the wiring, the input winding 11 and the output winding 12 each have a plurality of independent winding loops, and any one of the independent winding loops is provided with a corresponding wiring contact 81 on the wiring board 8. If the input winding 11 has three independent connection loops with four connection contacts, it is sufficient to connect one high-potential and one low-potential connection contact alternatively. As shown in FIG. 5, 0v to 213v, respectively; 0v-220 v; 0v-227v, wide voltage input can be realized; similarly, the output winding 12 is provided as three independent connection loops, and since the output side does not have the problem of sharing the low potential wiring contact 81, each of the output side loops has two wiring contacts 81, as shown in fig. 5, which are 20.8v, 0.8A two sets and 10.2v, 1.8A one set, respectively. Indeed, the number of the connection loops of the input side and the output side, and the setting of the output voltage and the output current can be realized by changing the number of turns of the winding according to actual requirements, and the setting can be flexibly set by a person skilled in the art, and the part is the prior art of the transformer and is not described herein.

In order to further enhance the shielding and isolating effect between the windings, preferably, an insulating paper 6 is further disposed between the input winding 11 and the output winding 12 and the iron core 5.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. The utility model provides a super isolation transformer based on faraday shield structure, includes the winding unit of winding on two iron cores (5) that set up side by side, its characterized in that: iron core (5) are vertical O type closed loop structure who places, winding unit horizontal winding is on two iron cores (5), winding unit is by overlap input winding (11) and output winding (12) of placing from top to bottom to and inlay and insert two T type division boards (7) that are used for keeping apart between input winding (11) and output winding (12), two all be provided with wiring board (8) on T type division board (7), fixedly connected with bottom plate (2) can be dismantled to iron core (5) bottom, bottom plate (2) and shield cover (1) of dismantling the connection form the hollow structure who is used for holding winding unit and iron core (5).

2. The super-isolation transformer based on the Faraday shielding structure, according to claim 1, wherein: t type division board (7) comprise mutually perpendicular fixed connection's riser (71) and diaphragm (72), diaphragm (72) both sides limit all forms hem (73) that are used for keeping apart input winding (11) and output winding (12) to same one side vertical bending, the middle part of diaphragm (72) is provided with and is used for dodging notch (74) of iron core (5), the area of riser (71) is greater than the projection area of winding unit on riser (71).

3. The super-isolation transformer based on the Faraday shielding structure, according to claim 2, wherein: two the surface of iron core (5) is provided with steel sheet (4) that are used for fixed iron core (5), two free ends and the centre of steel sheet (4) all with can dismantle the setting and be in pull rod (3) joint on bottom plate (2), the quantity of pull rod (3) is three, is located two respectively the centre of iron core (5) and the position that both sides are close to bottom plate (2), arbitrary one pull rod (3) all are through fastener (10) fixed connection.

4. The super-isolation transformer based on the Faraday shielding structure, according to claim 2, wherein: arbitrary riser (71) are kept away from wiring board (8) are installed to one side of iron core (5), there are a plurality of wiring contacts (81) on wiring board (8), wiring board (8) with be provided with insulating pad (9) between riser (71).

5. The super isolation transformer based on the Faraday shielding structure, according to claim 4, wherein: the edge symmetry or the evenly distributed of bottom plate (2) have a plurality of auricle of connection (21) of buckling upwards, arbitrary auricle of connection (21) all is provided with shield cover (1) corresponding joint structure or connecting hole.

6. The super isolation transformer based on the Faraday shielding structure, according to claim 5, wherein: the input winding (11) and the output winding (12) are provided with a plurality of independent winding loops, and any one independent winding loop is provided with a corresponding wiring contact (81) on the wiring board (8).

7. The super-isolation transformer based on the Faraday shielding structure, according to claim 1, wherein: and insulating paper (6) is also arranged between the input winding (11) and the iron core (5) and between the output winding (12) and the iron core (5).