CN109524220B - Transformer and transformer processing method - Google Patents
Transformer and transformer processing method Download PDFInfo
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- CN109524220B CN109524220B CN201811613511.5A CN201811613511A CN109524220B CN 109524220 B CN109524220 B CN 109524220B CN 201811613511 A CN201811613511 A CN 201811613511A CN 109524220 B CN109524220 B CN 109524220B
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- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
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Abstract
The invention discloses a transformer and a transformer processing method, wherein the transformer comprises an insulation box assembly, the insulation box assembly comprises a high-voltage leading-out wire box, a high-low voltage coil winding box and a high-voltage coil winding end cover used for plugging a high-voltage coil cavity of the high-low voltage coil winding box, the high-voltage leading-out wire box is fixedly connected with the high-low voltage coil winding box, the high-voltage coil cavity is communicated with the cavity of the high-voltage leading-out wire box through a sealed channel, a low-voltage coil cavity isolated from the high-voltage coil cavity through an insulation board is arranged in the high-low voltage coil winding box, and insulation structures are respectively encapsulated in the low-voltage coil cavity and the high-voltage. In the transformer that this application provided, the insulation system through insulation box subassembly and embedment is with high-voltage coil, the dual isolation of low-voltage coil, and through high-voltage outgoing line box with high-voltage outgoing line position insulation isolation, has improved the safety in utilization of transformer.
Description
Technical Field
The invention relates to the technical field of transformer insulation protection, in particular to a transformer. The invention also relates to a transformer processing method.
Background
A transformer is a device that changes an ac voltage by using the principle of electromagnetic induction, and is a main and important component of a power converter. Since transformers are involved in the conversion of power and are an extremely important device in power systems, the insulating arrangement of transformers is especially important.
The insulation system of transformer need only can realize through multiple insulation cooperation usually, and it is insulating that concrete accessible epoxy casting combines air and insulating paper simultaneously, and traditional epoxy casting transformer structure often is very big, simultaneously, needs air and insulating paper etc. to insulate and keeps apart, can appear insulating inefficacy when epoxy fracture or thermal ageing, and single-layer insulation can seriously reduce breakdown voltage when weing simultaneously, leads to the safety in utilization of transformer lower.
Disclosure of Invention
The invention aims to provide a transformer, which improves the use safety of the transformer. The invention further aims to provide a transformer processing method.
In order to achieve the purpose, the invention provides a transformer, which further comprises an insulation box assembly, wherein the insulation box assembly comprises a high-voltage leading-out wire box, a high-voltage coil winding box and a high-voltage coil winding end cover used for plugging a high-voltage coil cavity of the high-voltage coil winding box, the high-voltage leading-out wire box is fixedly connected with the high-voltage coil winding box, the high-voltage coil cavity is communicated with the cavity of the high-voltage leading-out wire box through a sealed channel, a low-voltage coil cavity isolated from the high-voltage coil cavity through an insulation board is arranged in the high-voltage coil winding box, and insulation structures are respectively encapsulated in the low-voltage coil cavity and the high-voltage coil cavity.
Preferably, a high-voltage coil framework retaining part and a high-voltage coil framework sleeved on the high-voltage coil framework retaining part are arranged in the high-voltage coil cavity, and the high-voltage coil is wound on the high-voltage coil framework.
Preferably, the high-voltage coil framework holding part and the high-voltage coil framework are both multiple, and the high-voltage coil framework holding part and the high-voltage coil framework correspond to each other one by one.
Preferably, a high-voltage lead-out wire gap is arranged on the high-voltage coil framework.
Preferably, a low-voltage coil framework retaining part is arranged in the low-voltage coil cavity, the low-voltage coil framework is sleeved on the low-voltage coil framework retaining part, and the low-voltage coil is wound on the low-voltage coil framework.
Preferably, the low-voltage coil bobbin holding part and the low-voltage coil bobbin are both multiple, and the low-voltage coil bobbin holding part and the low-voltage coil bobbin correspond to each other one by one.
Preferably, a low-voltage outgoing line notch is formed in the low-voltage coil framework.
Preferably, the outer surfaces of the high-voltage coil winding box and the low-voltage coil winding end cover are coated with metal isolation layers.
Preferably, the metal isolation layer of the high-voltage coil winding end cover is provided with a broken groove for preventing short circuit.
Preferably, the high-voltage coil winding device further comprises a first connecting rod and a second connecting rod, two ends of the first connecting rod are respectively connected with the high-voltage outgoing line box and the high-voltage coil winding end cover, and two ends of the second connecting rod are respectively connected with the high-voltage outgoing line box and the high-low voltage coil winding box.
Preferably, one end of the low-voltage coil cavity, which is far away from the high-voltage coil winding end cover, is an open cavity communicated with the outside.
Preferably, a plurality of creepage ribs arranged in sequence are arranged on the outer side of the high-voltage outlet box.
A transformer processing method comprises the following steps:
s1: the high-voltage coil winding box is internally provided with a high-voltage coil cavity and a low-voltage coil cavity which is isolated from the high-voltage coil cavity by an insulating plate;
s2: winding a high-voltage coil on a high-voltage coil framework sleeved on a high-voltage coil framework holding part, wherein the high-voltage coil, the high-voltage coil framework holding part and the high-voltage coil framework are arranged in a high-voltage coil cavity;
winding a low-voltage coil on a low-voltage coil framework sleeved on a low-voltage coil framework holding part, wherein the low-voltage coil, the low-voltage coil framework and the low-voltage coil framework are arranged in a low-voltage coil cavity;
s3: filling insulating media into the high-voltage coil cavity and the low-voltage coil cavity for sealing;
s4: sealing the high-voltage coil winding end cover at the opening of the high-voltage coil cavity, wherein the high-voltage coil cavity is communicated with the cavity of the high-voltage leading-out wire box through a sealed channel;
s5: and fixedly connecting the high-voltage lead-out wire box with the high-voltage and low-voltage coil winding box.
In the technical scheme, the transformer provided by the invention comprises an insulation box assembly, wherein the insulation box assembly comprises a high-voltage leading-out wire box, a high-low voltage coil winding box and a high-voltage coil winding end cover used for plugging a high-voltage coil cavity of the high-low voltage coil winding box, the high-voltage leading-out wire box is fixedly connected with the high-low voltage coil winding box, the high-voltage coil cavity is communicated with the cavity of the high-voltage leading-out wire box through a sealed channel, a low-voltage coil cavity is arranged in the high-low voltage coil winding box, and insulation structures are encapsulated in the low-voltage coil cavity and the high-voltage coil cavity.
According to the transformer, the high-voltage coil and the low-voltage coil are isolated doubly through the insulating box assembly and the encapsulated insulating structure, and the high-voltage outgoing line is isolated in an insulating mode through the high-voltage outgoing line box, so that the use safety of the transformer is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a transformer according to an embodiment of the present invention;
fig. 2 is a top view of a transformer according to an embodiment of the present invention;
fig. 3 is a cross-sectional view of a transformer provided in an embodiment of the present invention;
FIG. 4 is a side view of a transformer provided by an embodiment of the present invention;
FIG. 5 is a view of the opening position of the communication port provided in the embodiment of the present invention;
FIG. 6 is a top view of a transformer with end caps of the high voltage coil winding removed in accordance with an embodiment of the present invention;
fig. 7 is a bottom view of a transformer according to an embodiment of the present invention;
fig. 8 is an assembly view of a high voltage bobbin and a low voltage bobbin provided by an embodiment of the present invention.
Wherein in FIGS. 1-8: the high-voltage coil comprises a 1-high-voltage lead-out box, 11-creepage ribs, 12-communication ports, a 2-high-low-voltage coil winding box, a 21-channel, 22-second metal isolation layers, 23-first metal isolation layers, 3-high-voltage coil winding end covers, 31-third metal isolation layers, 311-broken grooves, 4-high-voltage coil framework retaining parts, 41-high-voltage coil frameworks, 42-high-voltage lead-out line gaps, 5-low-voltage coil framework retaining parts, 51-low-voltage coil frameworks, 52-low-voltage lead-out line gaps, 6-first connecting rods and 7-iron cores.
Detailed Description
The core of the invention is to provide a transformer, and the use safety of the transformer is improved. The other core of the invention is to provide a transformer processing method.
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and embodiments.
Referring to fig. 1 to 8, in a specific embodiment, a transformer provided in an embodiment of the present invention includes an insulation box assembly, where the insulation box assembly includes a high-voltage outgoing line box 1, a high-low voltage coil winding box 2, and a high-voltage coil winding end cover 3 for plugging a high-voltage coil cavity of the high-low voltage coil winding box 2, the high-voltage outgoing line box 1 is fixedly connected to the high-low voltage coil winding box 2, the high-voltage coil cavity is communicated with a cavity of the high-voltage outgoing line box 1 through a sealed channel 21, and specifically, a communication port 12 connected to the channel 21 is provided in the cavity of the high-voltage outgoing line box 1. Be equipped with the low voltage coil cavity in the high-low voltage coil winding box 2, all the embedment has insulation system in low voltage coil cavity and the high voltage coil cavity, and is specific, insulation system can be insulating resin. And one end of the low-voltage coil cavity far away from the high-voltage coil winding end cover 3 is an open cavity communicated with the outside.
Specifically, one surface of the high-voltage lead-out box 1 facing the high-voltage coil winding box 2 is open, a channel 21 is communicated between the high-voltage lead-out box 1 and the high-voltage coil winding box 2, and the high-voltage lead-out wire is communicated and led out to the inside of the high-voltage lead-out box 1 through the channel 21. Specifically, the channel 21 is arranged at the bottom of the high-low voltage coil winding box 2, and leads the high-voltage lead out to the high-voltage lead out box 1 to be isolated from the low-voltage coil cavity.
Specifically, the insulation box subassembly is the injection molding, and high-voltage outlet line box 1, high low-voltage coil winding box 2 and 3 independent injection moulding of high-voltage coil winding end cover, two fixed structures become wholly through two faying face welding in the insulation box subassembly, and the insulation box subassembly is easily processed through the welding equipment, and the reliability is high. Wherein, the high-voltage leading-out wire box 1, the high-low voltage coil winding box 2 and the high-voltage coil winding end cover 3 are respectively selected to be welded with a flat large surface, wherein the high-voltage coil winding end cover 3 is welded after the high-voltage coil winding is put in, concretely, the high-voltage coil winding is arranged in a high-voltage coil cavity, the low-voltage coil winding is arranged in a low-voltage coil cavity and then encapsulated with an insulation structure, namely thin layer encapsulation is carried out on the outer parts of the low-voltage coil winding and the high-voltage coil winding along the surface of the high-low voltage coil winding box 2, and the high-voltage coil winding end cover 3 and the high-low voltage coil winding box 2 are.
As can be seen from the above description, in the transformer provided in the embodiment of the present application, complete dual solid insulation between high voltage and low voltage is realized through the insulating box assembly and the potting material, and both the high-voltage coil winding and the low-voltage coil winding are potted and processed and are in a solid insulation state, and a large air gap is not needed for isolation. Meanwhile, the high-voltage lead wire is independently arranged in the high-voltage lead wire box 1 and is completely isolated from the low-voltage coil winding, so that the use safety of the transformer is improved.
Further, a high-voltage coil framework retaining portion 4 and a high-voltage coil framework 41 sleeved on the high-voltage coil framework retaining portion 4 are arranged in the high-voltage coil cavity, the high-voltage coil is wound on the high-voltage coil framework 41, preferably, the high-voltage coil framework 41 can be of a plate body structure extending out of the high-voltage coil framework retaining portion 4, and preferably, the high-voltage coil framework 41 and the high-voltage coil framework retaining portion 4 are of an integrally formed structure. Specifically, high-voltage coil skeleton 41 is a plurality of interval plate structures that interval set up in proper order, forms the groove structure that is used for holding the line body between two adjacent interval plates, for the convenience of winding high-voltage coil, preferably, is equipped with high-pressure lead-out wire breach 42 on the high-voltage coil skeleton 41.
Preferably, the high-voltage bobbin holding part 4 and the high-voltage bobbin 41 are both plural, and the high-voltage bobbin holding part 4 and the high-voltage bobbin 41 correspond to each other one by one. Specifically, the number of the high-voltage coil windings may be two.
Further, the low-voltage coil cavity is internally provided with a low-voltage coil framework retaining portion 5 and a low-voltage coil framework 51 sleeved on the low-voltage coil framework retaining portion 5, the low-voltage coil is wound on the low-voltage coil framework 51, preferably, the low-voltage coil framework 51 can be an outward extending plate body structure on the low-voltage coil framework retaining portion 5, and preferably, the low-voltage coil framework 51 and the low-voltage coil framework retaining portion 5 are integrally formed. Specifically, the low-voltage bobbin 51 is a plurality of spacer structures arranged at intervals in sequence. In order to facilitate winding of the low voltage coil, the low voltage bobbin 51 is preferably provided with a low voltage lead-out notch 52. Specifically, the low-voltage bobbin holding portion 5 and the low-voltage bobbin 51 are both plural, and the low-voltage bobbin holding portion 5 and the low-voltage bobbin 51 correspond to each other one by one.
As shown in fig. 6 and 7, the windings inside the low-voltage coil bobbin 51 and the high-voltage coil bobbin 41 have bobbins, and the bobbins are uniformly distributed in an elliptical structure on each layer, and have lead ports, namely, the low-voltage outgoing line notch 52 and the high-voltage outgoing line notch 42, and the bobbin layers are uniformly isolated, so that the winding is more regular, and the electric field intensity is more uniform.
Specifically, during assembly, the high-voltage coil winding is wound by the high-voltage coil bobbin 41, and the low-voltage coil winding is wound by the low-voltage coil bobbin 51, and then the high-voltage coil winding and the low-voltage coil winding are respectively placed in the high-voltage coil cavity and the low-voltage coil cavity.
Specifically, as shown in fig. 1, the high-low voltage coil winding box 2 is of an oval structure, the iron core 7 is placed along the direction of the long axis of the oval, and the installation of the iron core 7 is completed along the direction of the long axis of the oval in the center of the box body, so that the minimum size of the transformer is ensured.
Preferably, the outer surface of the high-low voltage coil winding box 2 and/or the high-voltage coil winding end cap 3 is coated with a metal isolation layer. The surface of the insulating box body is coated with the metal shielding layer, so that the field intensity distribution around the transformer under high voltage is more uniform, and the voltage resistance is higher. The outer surface of high-low voltage coil winding box 2 and the outer surface of passageway 21 are equipped with first metal isolation layer 23 and second metal isolation layer 22 respectively, and the outer surface coating of high-voltage coil winding end cover 3 has third metal isolation layer 31, makes transformer field intensity distribution even, and simultaneously, is equipped with disconnected groove 311 on the third metal isolation layer 31, and is concrete, and disconnected groove 311 length direction extends along third metal isolation layer 31 direction of radius, prevents the short circuit.
Specifically, the end of the low-voltage coil cavity far away from the high-voltage coil winding end cover 3 is an opening cavity communicated with the outside, no air gap exists after the high-voltage coil winding and the low-voltage coil winding are sealed, and the low-voltage coil is large in heat productivity and is arranged outside the high-voltage coil winding box 2 through the opening cavity, so that heat dissipation is facilitated integrally.
In order to prevent the stress of the welding area from being larger and prolong the service life of the transformer, preferably, the transformer further comprises a first connecting rod 6 and a second connecting rod, two ends of the first connecting rod 6 are respectively connected with the high-voltage leading-out wire box 1 and the high-voltage coil winding end cover 3, and two ends of the second connecting rod are respectively connected with the high-voltage leading-out wire box 1 and the high-low voltage coil winding box 2. Specifically, it is preferred, head rod 6 and second connecting rod are the insulator spindle, head rod 6 and second connecting rod are two, and head rod 6 and second connecting rod are L shape pole, and it is fixed through four L shape poles, and intensity is guaranteed, finally realizes high voltage transformer's field intensity evenly distributed, higher compressive strength, reliable solid-state insulation and along the creepage of face are insulating, have strengthened the bulk strength of high-pressure outlet box 1 with high-low voltage coil winding box 2.
In addition to the above-described embodiments, it is preferable that a plurality of creepage ribs 11 are provided in sequence outside the high-voltage outlet box 1. Creepage ribs 11 are arranged around the high-voltage leading-out wire box 1, so that the volume of the transformer is greatly reduced on the whole, and the power density is high; not only can strengthen the rigidity of the box body, but also can increase creepage.
The application provides a transformer processing method, which comprises the following steps:
s1: the high-voltage coil injection molding device comprises an injection molding high-voltage leading-out wire box 1, a high-low voltage coil winding box 2 and a high-voltage coil winding end cover 3, wherein a high-voltage coil cavity and a low-voltage coil cavity isolated from the high-voltage coil cavity through an insulation plate are arranged in the high-low voltage coil winding box 2.
S2: the high-voltage coil is wound on the high-voltage coil bobbin 41 sleeved on the high-voltage coil bobbin holding portion 4, preferably, the high-voltage coil bobbin 41 can be of a plate body structure extending outwards from the high-voltage coil bobbin holding portion 4, and preferably, the high-voltage coil bobbin 41 and the high-voltage coil bobbin holding portion 4 are of an integrally formed structure. The high-voltage coil, the high-voltage coil bobbin holding portion 4, and the high-voltage coil bobbin 41 are located in the high-voltage coil cavity. Specifically, high-voltage coil skeleton 41 is a plurality of interval plate structures that interval set up in proper order, forms the groove structure that is used for holding the line body between two adjacent interval plates, for the convenience of winding high-voltage coil, preferably, is equipped with high-pressure lead-out wire breach 42 on the high-voltage coil skeleton 41.
Preferably, the high-voltage bobbin holding part 4 and the high-voltage bobbin 41 are both plural, and the high-voltage bobbin holding part 4 and the high-voltage bobbin 41 correspond to each other one by one. Specifically, the number of the high-voltage coil windings may be two.
Winding the low-voltage coil on the low-voltage coil bobbin 51 sleeved on the low-voltage coil bobbin holding portion 5, preferably, the low-voltage coil bobbin 51 may be an outward-extending plate body structure on the low-voltage coil bobbin holding portion 5, and preferably, the low-voltage coil bobbin 51 and the low-voltage coil bobbin holding portion 5 are integrally formed. The low voltage coil, the low voltage bobbin 51 and the low voltage bobbin holding portion 5 are located in the low voltage coil cavity. Specifically, the number of the low voltage coil windings may be two.
Specifically, the low-voltage bobbin 51 is a plurality of spacer structures arranged at intervals in sequence. In order to facilitate winding of the low voltage coil, the low voltage bobbin 51 is preferably provided with a low voltage lead-out notch 52. Specifically, the low-voltage bobbin holding portion 5 and the low-voltage bobbin 51 are both plural, and the low-voltage bobbin holding portion 5 and the low-voltage bobbin 51 correspond to each other one by one.
As shown in fig. 6 and 7, the windings inside the low-voltage coil bobbin 51 and the high-voltage coil bobbin 41 have bobbins, and the bobbins are uniformly distributed in an elliptical structure on each layer, and have lead ports, namely, the low-voltage outgoing line notch 52 and the high-voltage outgoing line notch 42, and the bobbin layers are uniformly isolated, so that the winding is more regular, and the electric field intensity is more uniform.
Specifically, during assembly, the high-voltage coil winding is wound by the high-voltage coil bobbin 41, and the low-voltage coil winding is wound by the low-voltage coil bobbin 51, and then the high-voltage coil winding and the low-voltage coil winding are respectively placed in the high-voltage coil cavity and the low-voltage coil cavity.
Specifically, as shown in fig. 1, the high-low voltage coil winding box 2 is of an oval structure, the iron core 7 is placed along the direction of the long axis of the oval, and the installation of the iron core 7 is completed along the direction of the long axis of the oval in the center of the box body, so that the minimum size of the transformer is ensured.
S3: and filling insulating medium into the high-voltage coil cavity and the low-voltage coil cavity for sealing, wherein the insulating medium can be insulating resin.
S4: sealing the opening of the high-voltage coil cavity by the high-voltage coil winding end cover 3, and communicating the high-voltage coil cavity with the cavity of the high-voltage leading-out wire box 1 through a sealed channel 21;
s5: and fixedly connecting the high-voltage outlet box 1 with the high-voltage and low-voltage coil winding box 2.
The high-voltage and low-voltage complete dual solid insulation is realized through the insulation box assembly and the potting material, and the high-voltage coil winding and the low-voltage coil winding are both subjected to potting treatment and are in a solid insulation state without large air gaps for isolation. Meanwhile, the high-voltage lead wire is independently arranged in the high-voltage lead wire box 1 and is completely isolated from the low-voltage coil winding, so that the use safety of the transformer is improved.
And one end of the low-voltage coil cavity far away from the high-voltage coil winding end cover 3 is an open cavity communicated with the outside.
Specifically, one surface of the high-voltage lead-out box 1 facing the high-voltage coil winding box 2 is open, a channel 21 is communicated between the high-voltage lead-out box 1 and the high-voltage coil winding box 2, and the high-voltage lead-out wire is communicated and led out to the inside of the high-voltage lead-out box 1 through the channel 21. Specifically, the channel 21 is arranged at the bottom of the high-low voltage coil winding box 2, and leads the high-voltage lead out to the high-voltage lead out box 1 to be isolated from the low-voltage coil cavity.
Specifically, the insulation box subassembly is the injection molding, and high-voltage outlet line box 1, high low-voltage coil winding box 2 and 3 independent injection moulding of high-voltage coil winding end cover, two fixed structures become wholly through two faying faces welding in the insulation box subassembly, and the insulation box subassembly is easily processed through the welding equipment, and the reliability is high. Wherein, the high-voltage leading-out wire box 1, the high-low voltage coil winding box 2 and the high-voltage coil winding end cover 3 are respectively selected to be welded with a flat large surface, wherein the high-voltage coil winding end cover 3 is welded after the high-voltage coil winding is put in, concretely, the high-voltage coil winding is arranged in a high-voltage coil cavity, the low-voltage coil winding is arranged in a low-voltage coil cavity and then encapsulated with an insulation structure, namely thin layer encapsulation is carried out on the outer parts of the low-voltage coil winding and the high-voltage coil winding along the surface of the high-low voltage coil winding box 2, and the high-voltage coil winding end cover 3 and the high-low voltage coil winding box 2 are.
The outer surface of the high-low voltage coil winding box 2 and/or the high-voltage coil winding end cover 3 is coated with a metal isolation layer. The surface of the insulating box body is coated with the metal shielding layer, so that the field intensity distribution around the transformer under high voltage is more uniform, and the voltage resistance is higher. The outer surface of high-low voltage coil winding box 2 and the outer surface of passageway 21 are equipped with first metal isolation layer 23 and second metal isolation layer 22 respectively, and the outer surface coating of high-voltage coil winding end cover 3 has third metal isolation layer 31, makes transformer field intensity distribution even, and simultaneously, is equipped with disconnected groove 311 on the third metal isolation layer 31, and is concrete, and disconnected groove 311 length direction extends along third metal isolation layer 31 direction of radius, prevents the short circuit.
Specifically, the end of the low-voltage coil cavity far away from the high-voltage coil winding end cover 3 is an opening cavity communicated with the outside, no air gap exists after the high-voltage coil winding and the low-voltage coil winding are sealed, and the low-voltage coil is large in heat productivity and is arranged outside the high-voltage coil winding box 2 through the opening cavity, so that heat dissipation is facilitated integrally.
In order to prevent the stress of the welding area from being larger and prolong the service life of the transformer, preferably, the transformer further comprises a first connecting rod 6 and a second connecting rod, two ends of the first connecting rod 6 are respectively connected with the high-voltage leading-out wire box 1 and the high-voltage coil winding end cover 3, and two ends of the second connecting rod are respectively connected with the high-voltage leading-out wire box 1 and the high-low voltage coil winding box 2. Specifically, it is preferred, head rod 6 and second connecting rod are the insulator spindle, head rod 6 and second connecting rod are two, and head rod 6 and second connecting rod are L shape pole, and it is fixed through four L shape poles, and intensity is guaranteed, finally realizes high voltage transformer's field intensity evenly distributed, higher compressive strength, reliable solid-state insulation and along the creepage of face are insulating, have strengthened the bulk strength of high-pressure outlet box 1 with high-low voltage coil winding box 2.
In addition to the above-described embodiments, it is preferable that a plurality of creepage ribs 11 are provided in sequence outside the high-voltage outlet box 1. Creepage ribs 11 are arranged around the high-voltage leading-out wire box 1, so that the volume of the transformer is greatly reduced on the whole, and the power density is high; not only can strengthen the rigidity of the box body, but also can increase creepage.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A transformer processing method is characterized by comprising the following steps:
s1: the high-voltage lead-out wire box (1), the high-voltage coil winding box (2) and the high-voltage coil winding end cover (3) are injection molded, and a high-voltage coil cavity and a low-voltage coil cavity isolated from the high-voltage coil cavity through an insulating plate are arranged in the high-voltage coil winding box (2);
s2: winding and sleeving a high-voltage coil on a high-voltage coil framework (41) on a high-voltage coil framework holding part (4), wherein the high-voltage coil, the high-voltage coil framework holding part (4) and the high-voltage coil framework (41) are arranged in a high-voltage coil cavity;
winding and sleeving a low-voltage coil on a low-voltage coil framework (51) on a low-voltage coil framework holding part (5), wherein the low-voltage coil, the low-voltage coil framework (51) and the low-voltage coil framework holding part (5) are arranged in a low-voltage coil cavity;
s3: filling insulating media into the high-voltage coil cavity and the low-voltage coil cavity for sealing;
s4: arranging a high-voltage coil winding end cover (3) at an upper opening of a high-voltage coil cavity, sealing the upper opening, and communicating the high-voltage coil cavity with a cavity of the high-voltage leading-out wire box (1) through a sealed channel (21);
s5: the high-voltage leading-out wire box (1) is fixedly connected with the high-voltage coil winding box (2).
2. The transformer processing method according to claim 1, wherein the high-voltage bobbin holding part (4) and the high-voltage bobbin (41) are provided in plurality, and the high-voltage bobbin holding part (4) and the high-voltage bobbin (41) correspond to each other one by one.
3. The transformer processing method according to claim 1, characterized in that a high-voltage lead-out wire notch (42) is arranged on the high-voltage coil bobbin (41).
4. The transformer processing method according to claim 1, wherein the low-voltage bobbin holding part (5) and the low-voltage bobbin (51) are provided in plurality, and the low-voltage bobbin holding part (5) and the low-voltage bobbin (51) correspond to each other one by one.
5. The transformer processing method according to claim 1, characterized in that a low-voltage lead-out wire notch (52) is arranged on the low-voltage coil bobbin (51).
6. The transformer processing method according to claim 1, characterized in that the outer surfaces of the high-voltage coil winding box (2) and the low-voltage coil winding end cover (3) are coated with metal isolation layers.
7. The transformer processing method according to claim 6, characterized in that a breaking groove (311) for preventing short circuit is provided on the metal isolation layer of the high-voltage coil winding end cap (3).
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|---|---|---|---|---|
| CN201765930U (en) * | 2010-07-02 | 2011-03-16 | 西安长庆科技工程有限责任公司 | Combined power transformer |
| CN102436913B (en) * | 2011-12-20 | 2014-03-26 | 芜湖国睿兆伏电子股份有限公司 | Encapsulated inductor and assembly process thereof |
| CN205004161U (en) * | 2015-09-17 | 2016-01-27 | 孙振民 | Take integrated current transformer of contact box modularization |
| CN208093339U (en) * | 2018-03-08 | 2018-11-13 | 广州易和医疗技术开发有限公司 | A kind of transformer and potential device |
| CN108831721B (en) * | 2018-06-27 | 2020-03-24 | 阳光电源股份有限公司 | Transformer insulation assembly and transformer |
-
2018
- 2018-12-27 CN CN201811613511.5A patent/CN109524220B/en active Active
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