CN112927902A - Filament transformer and high-voltage generator - Google Patents

Filament transformer and high-voltage generator Download PDF

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Publication number
CN112927902A
CN112927902A CN202110110791.3A CN202110110791A CN112927902A CN 112927902 A CN112927902 A CN 112927902A CN 202110110791 A CN202110110791 A CN 202110110791A CN 112927902 A CN112927902 A CN 112927902A
Authority
CN
China
Prior art keywords
winding
framework
filament transformer
upper cover
lower cover
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Pending
Application number
CN202110110791.3A
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Chinese (zh)
Inventor
赵晓国
孙建伟
杜学伟
方庆祥
方建伟
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Shanghai Sk Transformer Co ltd
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Shanghai Sk Transformer Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Sk Transformer Co ltd filed Critical Shanghai Sk Transformer Co ltd
Priority to CN202110110791.3A priority Critical patent/CN112927902A/en
Publication of CN112927902A publication Critical patent/CN112927902A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/30Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
    • H01F27/306Fastening or mounting coils or windings on core, casing or other support
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/32Insulating of coils, windings, or parts thereof

Abstract

The application provides a filament transformer and high voltage generator, the filament transformer includes magnetic core, first winding subassembly and second winding subassembly, the magnetic core is two C type iron cores and connects the magnetic core that forms "mouthful" style of calligraphy, first winding subassembly includes first winding skeleton and first winding solenoid, the second winding subassembly includes second winding skeleton, second winding solenoid, second winding upper cover and second winding lower cover; the first winding framework is sleeved outside one side of the joint of the two C-shaped iron cores, the first winding coil is wound on the winding post of the first winding framework, the second winding framework is sleeved outside the other side of the joint of the two C-shaped iron cores, and the second winding coil is wound on the winding post of the second winding framework; the second winding upper cover and the second winding lower cover are coaxially buckled and wrapped on the second winding framework and the second winding coil. The application can improve the insulation effect of the winding.

Description

Filament transformer and high-voltage generator
Technical Field
The present application relates to the field of transformer technology, and more particularly, to a filament transformer and a high voltage generator.
Background
The filament transformer is mainly applied to an X-ray high-voltage generator and provides a power supply for an X-ray bulb tube. The existing filament transformer consists of a primary winding, a secondary winding and 2C-shaped magnetic cores, and the manufacturing process of the filament transformer winding mainly comprises the steps of winding the winding by a simple framework, then winding and wrapping an insulating material, so that the winding is easy to loose, and the insulating effect of the winding in the manufactured filament transformer is poor.
Disclosure of Invention
The embodiment of the application provides a filament transformer and a high-voltage generator to solve the problem that the insulation effect of a winding in the filament transformer is poor.
In a first aspect, an embodiment of the present application provides a filament transformer, including a magnetic core, a first winding assembly and a second winding assembly, where the magnetic core is formed by connecting two C-shaped iron cores in a square shape, the first winding assembly includes a first winding skeleton and a first winding coil, and the second winding assembly includes a second winding skeleton, a second winding coil, a second winding upper cover and a second winding lower cover;
the first winding framework is sleeved outside one side of the joint of the two C-shaped iron cores, the first winding coil is wound on the winding post of the first winding framework, the second winding framework is sleeved outside the other side of the joint of the two C-shaped iron cores, and the second winding coil is wound on the winding post of the second winding framework;
the second winding upper cover and the second winding lower cover are coaxially buckled and wrapped on the second winding framework and the second winding coil.
In a second aspect, an embodiment of the present application further provides a high voltage generator, where the high voltage generator includes the filament transformer disclosed in the first aspect of the embodiment of the present application.
Like this, in this application embodiment, through the wrapping post winding of first winding skeleton first winding solenoid, the wrapping post winding of second winding skeleton second winding solenoid, the second winding upper cover with the coaxial lock parcel of second winding lower cover second winding skeleton with second winding solenoid, the second winding upper cover with the second winding lower cover can regard as insulating material will the second winding subassembly with first winding subassembly separates, thereby reaches the improvement first winding subassembly with the technological effect of insulating effect between the second winding subassembly.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is an exploded view of a filament transformer provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a filament transformer provided in an embodiment of the present application;
fig. 3 is one of cross-sectional views of a filament transformer provided in an embodiment of the present application;
fig. 4 is a second cross-sectional view of a filament transformer according to an embodiment of the present application.
Detailed Description
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, but not all, embodiments of the present 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.
Referring to fig. 1, fig. 1 is an exploded view of a filament transformer according to an embodiment of the present disclosure, and as shown in fig. 1, the filament transformer includes a magnetic core 10, a first winding assembly 20 and a second winding assembly 30, where the magnetic core 10 is a magnetic core formed by connecting two C-shaped iron cores 11, the first winding assembly 20 includes a first winding skeleton 21 and a first winding coil 22, and the second winding assembly 30 includes a second winding skeleton 31, a second winding coil 32, a second winding upper cover 33 and a second winding lower cover 34;
the first winding frame 21 is sleeved outside one side of the joint of the two C-shaped iron cores 11, the first winding coil 22 is wound on the winding post of the first winding frame 21, the second winding frame 31 is sleeved outside the other side of the joint of the two C-shaped iron cores 11, and the second winding coil 32 is wound on the winding post of the second winding frame 31;
the second winding upper cover 33 and the second winding lower cover 34 are coaxially buckled and wrapped on the second winding framework 31 and the second winding coil 32.
The size of the second winding upper cover 33 may be larger than that of the second winding lower cover 34, for example: the second winding lower cover 34 wraps the second winding frame 31 and the second winding coil 32 from below, the second winding upper cover 33 wraps the second winding lower cover 34 from above, and the second winding frame 31 and the second winding coil 32 can be separated from the outside by coaxially engaging the second winding upper cover 33 with the second winding lower cover 34, and can also serve as insulating layers of the first winding assembly 20 and the second winding assembly 30.
In addition, the first winding form 21 and the second winding form 31 may be integrally formed, for example: through the first winding skeleton 21 of fashioned above-mentioned and the second winding skeleton 31 of fashioned above-mentioned, above-mentioned first winding solenoid 22 can realize that automatic mode twines on the wrapping post of above-mentioned first winding skeleton 21, and above-mentioned second winding solenoid 32 can realize that automatic mode twines on the wrapping post of above-mentioned second winding skeleton 31 to can improve the homogeneity of above-mentioned first winding solenoid 22 and above-mentioned second winding solenoid 32 through automatic winding mode, thereby improve the insulating effect of above-mentioned first winding subassembly 20 and above-mentioned second winding subassembly 30.
In the embodiment of the application, through the wrapping post winding of first winding skeleton 21 first winding solenoid 22, the wrapping post winding of second winding skeleton 31 second winding solenoid 32, second winding upper cover 33 with the coaxial lock parcel of second winding lower cover 34 second winding skeleton 31 with second winding solenoid 32, second winding upper cover 33 with second winding lower cover 34 can regard as insulating material will second winding subassembly 30 with first winding subassembly 20 separates, thereby reaches the improvement first winding subassembly 20 with the technological effect of insulating effect between the second winding subassembly 30.
Optionally, as shown in fig. 2, the second winding skeleton 31 is provided with a hollow structure, and the hollow structure is an irregular cylinder;
the concave part of the irregular cylinder is in contact with the surface of the magnetic core 10, and a gap is left between the convex part of the irregular cylinder and the side edge of the magnetic core 10.
Wherein, the cross section of the magnetic core 10 may be a rectangle, for example: fig. 3 is a cross-sectional view of a filament transformer according to an embodiment of the present invention, wherein the cross-section of the hollow structure may be an irregular shape of the second winding former 32 shown in fig. 3, four right angles of the rectangle are surrounded by four convex portions of the irregular shape, and four sides of the rectangle are in contact with four concave portions of the irregular shape.
The first winding frame 22 and the second winding frame 32 may be immersed in insulating oil to improve the insulating strength, and the gap between the protruding portion of the irregular cylinder and the lateral edge of the magnetic core 10 may allow the insulating oil to flow, thereby further enhancing the insulating performance of the second winding frame 32. And, the winding of the existing filament transformer is easy to produce the electric arc because of poor insulating effect, and the above-mentioned insulating oil is good in heat conductivity, and can divide and touch a large amount of gas under the high-temperature effect of electric arc, produce great pressure, make the above-mentioned insulating oil flow through the space between the side arris of the above-mentioned protruding portion and above-mentioned magnetic core 10 of the above-mentioned irregular cylinder, can improve the arc extinguishing performance of the medium, make the electric arc extinguish very fast, realize the technological effect of improving the performance of the above-mentioned filament transformer.
In this embodiment, because pressure differential is bigger between magnetic core 10 and the second winding subassembly 30, when pressure differential to a definite value, the right-angle side of magnetic core 10 with high-pressure spike effect takes place easily between the second winding subassembly 30, leads to the discharge breakdown, through second winding skeleton 31 is provided with hollow structure, hollow structure is irregular cylinder, just the depressed part of irregular cylinder with the surface contact of magnetic core 10, the bulge of irregular cylinder with the side edge of magnetic core 10 leaves the space, the bulge of irregular cylinder with the space between the side edge of magnetic core 10 can be convenient for insulating oil to flow, thereby the reinforcing the magnetic core 10 with dielectric strength between the second winding solenoid 32 avoids the emergence of above-mentioned high-pressure spike effect.
Optionally, both ends of the second winding framework 31 include a first hollow cylinder and a second hollow cylinder, the outer circle diameter of the first hollow cylinder is the same as that of the second hollow cylinder, and a gap is formed between the first hollow cylinder and the second hollow cylinder.
The second winding frame 31 may be integrally formed, for example: the hollow cylinders at the two ends of the second winding frame 31 can be used as baffles of the winding posts, so that the second winding wire packets 32 can be uniformly wound on the winding posts, and the hollow cylinders can also be used as insulating layers between the second winding wire packets 32 and the outside. As shown in fig. 4, the first hollow cylinder and the second hollow cylinder at one end of the second bobbin 31 may serve as two insulating layers, and a gap provided between the first hollow cylinder and the second hollow cylinder may improve fluidity of the insulating oil.
In this embodiment, through both ends of second winding skeleton 31 all include first hollow cylinder and second hollow cylinder, first hollow cylinder's excircle diameter with second hollow cylinder's excircle diameter is the same, and above-mentioned first hollow cylinder all can regard as the insulating layer of above-mentioned second winding skeleton 31 with above-mentioned second hollow cylinder, just first hollow cylinder with be provided with the space between the second hollow cylinder, can further improve the insulating effect of second winding skeleton 31.
Optionally, as shown in fig. 4, a first circular hole is formed in a bottom surface of the second winding upper cover 33, and the first circular hole is matched with the second winding frame 31.
The bottom surface of the second winding upper cover 33 may be an insulating layer at the upper end of the second winding frame 31, for example: as shown in fig. 4, the size of the first circular hole is matched with the recess at the upper end of the second winding frame 31, so that the bottom surface of the second winding upper cover 33 can just cover the recess at the upper end of the second winding frame 31, and thus the bottom surface of the second winding upper cover 33 can also be used as an insulating layer between the second winding coil 32 and the outside. In addition, the second winding upper cover 33 is wrapped around the second winding bobbin 31 and the second winding coil 32 by the cooperation of the first circular hole and the second winding bobbin 31, so that the stability can be improved.
In this embodiment, the bottom surface of the second winding upper cover 33 is provided with a first circular hole, and the first circular hole is matched with the second winding framework 31, so that the insulation effect of the second winding upper cover 33 can be improved.
Optionally, a second round hole is formed in the bottom surface of the second winding lower cover 34, and the second round hole is matched with the second winding frame 31.
The bottom surface of the second winding lower cover 34 may be used as an insulating layer at the lower end of the second winding frame 31, for example: as shown in fig. 4, the size of the second circular hole is matched with the recess at the lower end of the second winding frame 31, so that the bottom surface of the second winding lower cover 34 can be just covered at the recess position at the lower end of the second winding frame 31, and thus the bottom surface of the second winding lower cover 34 can also be used as an insulating layer between the second winding coil 32 and the outside. In addition, the second winding lower cover 34 is wrapped around the second winding frame 31 and the second winding coil 32 to be more stable through the matching of the second circular hole and the second winding frame 31.
In this embodiment, a second round hole is formed in the bottom surface of the second winding lower cover 34, and the second round hole is matched with the second winding frame 31, so that the insulation effect of the second winding lower cover 34 can be improved.
Optionally, as shown in fig. 4, a first notch is disposed on a side surface of the second winding upper cover 33, a second notch is disposed on a side surface of the second winding lower cover 34, and the second winding upper cover 33 and the second winding lower cover 34 are coaxially buckled, and then the first notch and the second notch form an outlet notch.
The first notch and the second notch may have the same size, for example: the heights of the second winding upper cover 33 and the second winding lower cover 34 are both set to be h, and the lengths of the first gap and the second gap may be set to be 0.7h, so that after the second winding upper cover and the second winding lower cover are coaxially fastened, a gap with a height of 0.4h may be left as an outlet gap of the second winding coil.
In this embodiment, a first notch is formed in a side surface of the second winding upper cover 33, a second notch is formed in a side surface of the second winding lower cover 34, and after the second winding upper cover and the second winding lower cover are coaxially fastened, the first notch and the second notch form an outlet notch.
Optionally, the first winding frame 21, the second winding frame 31, the second winding upper cover 33, and the second winding lower cover 34 are all made of insulating materials.
In this embodiment, the first winding bobbin 21 may isolate the first winding coil 22 from the magnetic core 10, the second winding bobbin 31 may isolate the second winding coil 32 from the magnetic core 10, and the second winding upper cover 33 and the second winding lower cover 34 may be coaxially fastened and then isolated from the first winding coil 22 and the second winding coil 32, so as to reduce leakage and avoid generation of arc, thereby improving performance of the filament transformer.
The embodiment of the application further provides a high voltage generator, which comprises the filament transformer.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (8)

1. A filament transformer comprises a magnetic core, a first winding assembly and a second winding assembly, and is characterized in that the magnetic core is formed by connecting two C-shaped iron cores and is in a shape like a Chinese character 'kou', the first winding assembly comprises a first winding framework and a first winding coil, and the second winding assembly comprises a second winding framework, a second winding coil, a second winding upper cover and a second winding lower cover;
the first winding framework is sleeved outside one side of the joint of the two C-shaped iron cores, the first winding coil is wound on the winding post of the first winding framework, the second winding framework is sleeved outside the other side of the joint of the two C-shaped iron cores, and the second winding coil is wound on the winding post of the second winding framework;
the second winding upper cover and the second winding lower cover are coaxially buckled and wrapped on the second winding framework and the second winding coil.
2. The filament transformer of claim 1, wherein the second winding former is provided with a hollow structure, and the hollow structure is an irregular cylinder;
the concave part of the irregular cylinder is in contact with the surface of the magnetic core, and a gap is reserved between the convex part of the irregular cylinder and the side edge of the magnetic core.
3. The filament transformer of claim 2, wherein both ends of the second winding former comprise a first hollow cylinder and a second hollow cylinder, an outer diameter of the first hollow cylinder is the same as an outer diameter of the second hollow cylinder, and a gap is provided between the first hollow cylinder and the second hollow cylinder.
4. The filament transformer of claim 1, wherein a bottom surface of the second winding upper cover is provided with a first round hole, and the first round hole is matched with the second winding framework.
5. The filament transformer of claim 1, wherein the bottom surface of the second winding lower cover is provided with a second round hole, and the second round hole is matched with the second winding framework.
6. The filament transformer of claim 1, wherein a first notch is formed in a side surface of the second winding upper cover, a second notch is formed in a side surface of the second winding lower cover, and the first notch and the second notch form an outlet notch after the second winding upper cover and the second winding lower cover are coaxially fastened.
7. The filament transformer of claim 1, wherein the first winding former, the second winding upper cover, and the second winding lower cover are all insulating materials.
8. A high voltage generator, characterized in that it comprises a filament transformer according to any one of claims 1 to 7.
CN202110110791.3A 2021-01-27 2021-01-27 Filament transformer and high-voltage generator Pending CN112927902A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110110791.3A CN112927902A (en) 2021-01-27 2021-01-27 Filament transformer and high-voltage generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110110791.3A CN112927902A (en) 2021-01-27 2021-01-27 Filament transformer and high-voltage generator

Publications (1)

Publication Number Publication Date
CN112927902A true CN112927902A (en) 2021-06-08

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Application Number Title Priority Date Filing Date
CN202110110791.3A Pending CN112927902A (en) 2021-01-27 2021-01-27 Filament transformer and high-voltage generator

Country Status (1)

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CN (1) CN112927902A (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1167535A (en) * 1997-08-20 1999-03-09 Sanmei Denki Kk Solenoid for hydraulic solenoid valve
JP2008034599A (en) * 2006-07-28 2008-02-14 Matsushita Electric Ind Co Ltd Transformer
US20080079525A1 (en) * 2006-10-02 2008-04-03 General Electric Company Filament transformer for x-ray tubes
CN202585082U (en) * 2011-05-12 2012-12-05 重庆华虹仪表有限公司 High-insulation level mutual inductor framework
CN103050227A (en) * 2012-12-20 2013-04-17 中国科学院电工研究所 High-frequency high-voltage transformer structure
WO2015194209A1 (en) * 2014-06-16 2015-12-23 株式会社西本合成販売 Transformer coil bobbin-cum-wound core holder and transformer using same
KR101870149B1 (en) * 2017-08-22 2018-06-25 박종원 Core cover for bobbin
CN208298667U (en) * 2018-05-07 2018-12-28 广东新昇电业科技股份有限公司 A kind of insulation system of annular core

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1167535A (en) * 1997-08-20 1999-03-09 Sanmei Denki Kk Solenoid for hydraulic solenoid valve
JP2008034599A (en) * 2006-07-28 2008-02-14 Matsushita Electric Ind Co Ltd Transformer
US20080079525A1 (en) * 2006-10-02 2008-04-03 General Electric Company Filament transformer for x-ray tubes
CN202585082U (en) * 2011-05-12 2012-12-05 重庆华虹仪表有限公司 High-insulation level mutual inductor framework
CN103050227A (en) * 2012-12-20 2013-04-17 中国科学院电工研究所 High-frequency high-voltage transformer structure
WO2015194209A1 (en) * 2014-06-16 2015-12-23 株式会社西本合成販売 Transformer coil bobbin-cum-wound core holder and transformer using same
KR101870149B1 (en) * 2017-08-22 2018-06-25 박종원 Core cover for bobbin
CN208298667U (en) * 2018-05-07 2018-12-28 广东新昇电业科技股份有限公司 A kind of insulation system of annular core

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Application publication date: 20210608

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